From ece92f85053b8df613edcf05b26a416cbc3d629c Mon Sep 17 00:00:00 2001 From: Jason Jin Date: Fri, 6 Jul 2007 08:34:56 +0800 Subject: This is a BIOS emulator, porting from SciTech for u-boot, mainly for ATI video card BIOS. and can be used for x86 code emulation by some modifications. Signed-off-by: Jason Jin --- drivers/bios_emulator/Makefile | 30 + drivers/bios_emulator/atibios.c | 340 ++ drivers/bios_emulator/besys.c | 722 +++ drivers/bios_emulator/bios.c | 321 ++ drivers/bios_emulator/biosemu.c | 370 ++ drivers/bios_emulator/biosemui.h | 169 + drivers/bios_emulator/include/biosemu.h | 392 ++ drivers/bios_emulator/include/x86emu.h | 191 + drivers/bios_emulator/include/x86emu/debug.h | 209 + drivers/bios_emulator/include/x86emu/decode.h | 88 + drivers/bios_emulator/include/x86emu/ops.h | 45 + drivers/bios_emulator/include/x86emu/prim_asm.h | 970 ++++ drivers/bios_emulator/include/x86emu/prim_ops.h | 142 + drivers/bios_emulator/include/x86emu/regs.h | 340 ++ drivers/bios_emulator/include/x86emu/x86emui.h | 101 + drivers/bios_emulator/x86emu/debug.c | 461 ++ drivers/bios_emulator/x86emu/decode.c | 1148 +++++ drivers/bios_emulator/x86emu/ops.c | 5431 +++++++++++++++++++++++ drivers/bios_emulator/x86emu/ops2.c | 1770 ++++++++ drivers/bios_emulator/x86emu/prim_ops.c | 2446 ++++++++++ drivers/bios_emulator/x86emu/sys.c | 322 ++ 21 files changed, 16008 insertions(+) create mode 100644 drivers/bios_emulator/Makefile create mode 100644 drivers/bios_emulator/atibios.c create mode 100644 drivers/bios_emulator/besys.c create mode 100644 drivers/bios_emulator/bios.c create mode 100644 drivers/bios_emulator/biosemu.c create mode 100644 drivers/bios_emulator/biosemui.h create mode 100644 drivers/bios_emulator/include/biosemu.h create mode 100644 drivers/bios_emulator/include/x86emu.h create mode 100644 drivers/bios_emulator/include/x86emu/debug.h create mode 100644 drivers/bios_emulator/include/x86emu/decode.h create mode 100644 drivers/bios_emulator/include/x86emu/ops.h create mode 100644 drivers/bios_emulator/include/x86emu/prim_asm.h create mode 100644 drivers/bios_emulator/include/x86emu/prim_ops.h create mode 100644 drivers/bios_emulator/include/x86emu/regs.h create mode 100644 drivers/bios_emulator/include/x86emu/x86emui.h create mode 100644 drivers/bios_emulator/x86emu/debug.c create mode 100644 drivers/bios_emulator/x86emu/decode.c create mode 100644 drivers/bios_emulator/x86emu/ops.c create mode 100644 drivers/bios_emulator/x86emu/ops2.c create mode 100644 drivers/bios_emulator/x86emu/prim_ops.c create mode 100644 drivers/bios_emulator/x86emu/sys.c (limited to 'drivers/bios_emulator') diff --git a/drivers/bios_emulator/Makefile b/drivers/bios_emulator/Makefile new file mode 100644 index 0000000..ba7d436 --- /dev/null +++ b/drivers/bios_emulator/Makefile @@ -0,0 +1,30 @@ +include $(TOPDIR)/config.mk + +LIB := libatibiosemu.a + +X86DIR = ./x86emu + +OBJS = atibios.o biosemu.o besys.o bios.o \ + $(X86DIR)/decode.o \ + $(X86DIR)/ops2.o \ + $(X86DIR)/ops.o \ + $(X86DIR)/prim_ops.o \ + $(X86DIR)/sys.o \ + $(X86DIR)/debug.o + +CFLAGS += -I. -I./include -I$(X86DIR) -I$(TOPDIR)/include \ + -D__PPC__ -D__BIG_ENDIAN__ + +all: $(LIB) + +$(LIB): $(OBJS) + $(AR) crv $@ $(OBJS) + +######################################################################### + +.depend: Makefile $(OBJS:.o=.c) + $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@ + +sinclude .depend + +######################################################################### diff --git a/drivers/bios_emulator/atibios.c b/drivers/bios_emulator/atibios.c new file mode 100644 index 0000000..084339c --- /dev/null +++ b/drivers/bios_emulator/atibios.c @@ -0,0 +1,340 @@ +/**************************************************************************** +* +* Video BOOT Graphics Card POST Module +* +* ======================================================================== +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1991-2004 SciTech Software, Inc. All rights reserved. +* +* This file may be distributed and/or modified under the terms of the +* GNU General Public License version 2.0 as published by the Free +* Software Foundation and appearing in the file LICENSE.GPL included +* in the packaging of this file. +* +* Licensees holding a valid Commercial License for this product from +* SciTech Software, Inc. may use this file in accordance with the +* Commercial License Agreement provided with the Software. +* +* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING +* THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR +* PURPOSE. +* +* See http://www.scitechsoft.com/license/ for information about +* the licensing options available and how to purchase a Commercial +* License Agreement. +* +* Contact license@scitechsoft.com if any conditions of this licensing +* are not clear to you, or you have questions about licensing options. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Linux Kernel +* Developer: Kendall Bennett +* +* Description: Module to implement booting PCI/AGP controllers on the +* bus. We use the x86 real mode emulator to run the BIOS on +* graphics controllers to bring the cards up. +* +* Note that at present this module does *not* support +* multiple controllers. +* +* The orignal name of this file is warmboot.c. +* Jason ported this file to u-boot to run the ATI video card +* BIOS in u-boot. +****************************************************************************/ +#include + +#ifdef CONFIG_BIOSEMU + +#include "biosemui.h" +#include + +/* Length of the BIOS image */ +#define MAX_BIOSLEN (128 * 1024L) + +/* Define some useful types and macros */ +#define true 1 +#define false 0 + +/* Place to save PCI BAR's that we change and later restore */ +static u32 saveROMBaseAddress; +static u32 saveBaseAddress10; +static u32 saveBaseAddress14; +static u32 saveBaseAddress18; +static u32 saveBaseAddress20; + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus to boot +VGAInfo - BIOS emulator VGA info structure + +REMARKS: +This function executes the BIOS POST code on the controller. We assume that +at this stage the controller has its I/O and memory space enabled and +that all other controllers are in a disabled state. +****************************************************************************/ +static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo * VGAInfo) +{ + RMREGS regs; + RMSREGS sregs; + + /* Determine the value to store in AX for BIOS POST. Per the PCI specs, + AH must contain the bus and AL must contain the devfn, encoded as + (dev << 3) | fn + */ + memset(®s, 0, sizeof(regs)); + memset(&sregs, 0, sizeof(sregs)); + regs.x.ax = ((int)PCI_BUS(pcidev) << 8) | + ((int)PCI_DEV(pcidev) << 3) | (int)PCI_FUNC(pcidev); + + /*Setup the X86 emulator for the VGA BIOS*/ + BE_setVGA(VGAInfo); + + /*Execute the BIOS POST code*/ + BE_callRealMode(0xC000, 0x0003, ®s, &sregs); + + /*Cleanup and exit*/ + BE_getVGA(VGAInfo); +} + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus +bar - Place to return the base address register offset to use + +RETURNS: +The address to use to map the secondary BIOS (AGP devices) + +REMARKS: +Searches all the PCI base address registers for the device looking for a +memory mapping that is large enough to hold our ROM BIOS. We usually end up +finding the framebuffer mapping (usually BAR 0x10), and we use this mapping +to map the BIOS for the device into. We use a mapping that is already +assigned to the device to ensure the memory range will be passed through +by any PCI->PCI or AGP->PCI bridge that may be present. + +NOTE: Usually this function is only used for AGP devices, but it may be + used for PCI devices that have already been POST'ed and the BIOS + ROM base address has been zero'ed out. + +NOTE: This function leaves the original memory aperture disabled by leaving + it programmed to all 1's. It must be restored to the correct value + later. +****************************************************************************/ +static u32 PCI_findBIOSAddr(pci_dev_t pcidev, int *bar) +{ + u32 base, size; + + for (*bar = 0x10; *bar <= 0x14; (*bar) += 4) { + pci_read_config_dword(pcidev, *bar, &base); + if (!(base & 0x1)) { + pci_write_config_dword(pcidev, *bar, 0xFFFFFFFF); + pci_read_config_dword(pcidev, *bar, &size); + size = ~(size & ~0xFF) + 1; + if (size >= MAX_BIOSLEN) + return base & ~0xFF; + } + } + return 0; +} + +/**************************************************************************** +REMARKS: +Some non-x86 Linux kernels map PCI relocateable I/O to values that +are above 64K, which will not work with the BIOS image that requires +the offset for the I/O ports to be a maximum of 16-bits. Ideally +someone should fix the kernel to map the I/O ports for VGA compatible +devices to a different location (or just all I/O ports since it is +unlikely you can have enough devices in the machine to use up all +64K of the I/O space - a total of more than 256 cards would be +necessary). + +Anyway to fix this we change all I/O mapped base registers and +chop off the top bits. +****************************************************************************/ +static void PCI_fixupIObase(pci_dev_t pcidev, int reg, u32 * base) +{ + if ((*base & 0x1) && (*base > 0xFFFE)) { + *base &= 0xFFFF; + pci_write_config_dword(pcidev, reg, *base); + + } +} + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus + +RETURNS: +Pointers to the mapped BIOS image + +REMARKS: +Maps a pointer to the BIOS image on the graphics card on the PCI bus. +****************************************************************************/ +void *PCI_mapBIOSImage(pci_dev_t pcidev) +{ + u32 BIOSImagePhys; + int BIOSImageBAR; + u8 *BIOSImage; + + /*Save PCI BAR registers that might get changed*/ + pci_read_config_dword(pcidev, PCI_ROM_ADDRESS, &saveROMBaseAddress); + pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_0, &saveBaseAddress10); + pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_1, &saveBaseAddress14); + pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_2, &saveBaseAddress18); + pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_4, &saveBaseAddress20); + + /*Fix up I/O base registers to less than 64K */ + if(saveBaseAddress14 != 0) + PCI_fixupIObase(pcidev, PCI_BASE_ADDRESS_1, &saveBaseAddress14); + else + PCI_fixupIObase(pcidev, PCI_BASE_ADDRESS_4, &saveBaseAddress20); + + /* Some cards have problems that stop us from being able to read the + BIOS image from the ROM BAR. To fix this we have to do some chipset + specific programming for different cards to solve this problem. + */ + + if ((BIOSImagePhys = PCI_findBIOSAddr(pcidev, &BIOSImageBAR)) == 0) { + printf("Find bios addr error\n"); + return NULL; + } + + BIOSImage = (u8 *) BIOSImagePhys; + + /*Change the PCI BAR registers to map it onto the bus.*/ + pci_write_config_dword(pcidev, BIOSImageBAR, 0); + pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, BIOSImagePhys | 0x1); + + udelay(1); + + /*Check that the BIOS image is valid. If not fail, or return the + compiled in BIOS image if that option was enabled + */ + if (BIOSImage[0] != 0x55 || BIOSImage[1] != 0xAA || BIOSImage[2] == 0) { + return NULL; + } + + return BIOSImage; +} + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus + +REMARKS: +Unmaps the BIOS image for the device and restores framebuffer mappings +****************************************************************************/ +void PCI_unmapBIOSImage(pci_dev_t pcidev, void *BIOSImage) +{ + pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, saveROMBaseAddress); + pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_0, saveBaseAddress10); + pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_1, saveBaseAddress14); + pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_2, saveBaseAddress18); + pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_4, saveBaseAddress20); +} + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus to boot +VGAInfo - BIOS emulator VGA info structure + +RETURNS: +True if successfully initialised, false if not. + +REMARKS: +Loads and POST's the display controllers BIOS, directly from the BIOS +image we can extract over the PCI bus. +****************************************************************************/ +static int PCI_postController(pci_dev_t pcidev, BE_VGAInfo * VGAInfo) +{ + u32 BIOSImageLen; + uchar *mappedBIOS; + uchar *copyOfBIOS; + + /*Allocate memory to store copy of BIOS from display controller*/ + if ((mappedBIOS = PCI_mapBIOSImage(pcidev)) == NULL) { + printf("videoboot: Video ROM failed to map!\n"); + return false; + } + + BIOSImageLen = mappedBIOS[2] * 512; + + if ((copyOfBIOS = malloc(BIOSImageLen)) == NULL) { + printf("videoboot: Out of memory!\n"); + return false; + } + memcpy(copyOfBIOS, mappedBIOS, BIOSImageLen); + + PCI_unmapBIOSImage(pcidev, mappedBIOS); + + /*Save information in VGAInfo structure*/ + VGAInfo->function = PCI_FUNC(pcidev); + VGAInfo->device = PCI_DEV(pcidev); + VGAInfo->bus = PCI_BUS(pcidev); + VGAInfo->pcidev = pcidev; + VGAInfo->BIOSImage = copyOfBIOS; + VGAInfo->BIOSImageLen = BIOSImageLen; + + /*Now execute the BIOS POST for the device*/ + if (copyOfBIOS[0] != 0x55 || copyOfBIOS[1] != 0xAA) { + printf("videoboot: Video ROM image is invalid!\n"); + return false; + } + + PCI_doBIOSPOST(pcidev, VGAInfo); + + /*Reset the size of the BIOS image to the final size*/ + VGAInfo->BIOSImageLen = copyOfBIOS[2] * 512; + return true; +} + +/**************************************************************************** +PARAMETERS: +pcidev - PCI device info for the video card on the bus to boot +pVGAInfo - Place to return VGA info structure is requested +cleanUp - True to clean up on exit, false to leave emulator active + +REMARKS: +Boots the PCI/AGP video card on the bus using the Video ROM BIOS image +and the X86 BIOS emulator module. +****************************************************************************/ +int BootVideoCardBIOS(pci_dev_t pcidev, BE_VGAInfo ** pVGAInfo, int cleanUp) +{ + BE_VGAInfo *VGAInfo; + + printf("videoboot: Booting PCI video card bus %d, function %d, device %d\n", + PCI_BUS(pcidev), PCI_FUNC(pcidev), PCI_DEV(pcidev)); + + /*Initialise the x86 BIOS emulator*/ + if ((VGAInfo = malloc(sizeof(*VGAInfo))) == NULL) { + printf("videoboot: Out of memory!\n"); + return false; + } + memset(VGAInfo, 0, sizeof(*VGAInfo)); + BE_init(0, 65536, VGAInfo, 0); + + /*Post all the display controller BIOS'es*/ + PCI_postController(pcidev, VGAInfo); + + /*Cleanup and exit the emulator if requested. If the BIOS emulator + is needed after booting the card, we will not call BE_exit and + leave it enabled for further use (ie: VESA driver etc). + */ + if (cleanUp) { + BE_exit(); + if (VGAInfo->BIOSImage) + free(VGAInfo->BIOSImage); + free(VGAInfo); + VGAInfo = NULL; + } + /*Return VGA info pointer if the caller requested it*/ + if (pVGAInfo) + *pVGAInfo = VGAInfo; + return true; +} + +#endif diff --git a/drivers/bios_emulator/besys.c b/drivers/bios_emulator/besys.c new file mode 100644 index 0000000..894012f --- /dev/null +++ b/drivers/bios_emulator/besys.c @@ -0,0 +1,722 @@ +/**************************************************************************** +* +* BIOS emulator and interface +* to Realmode X86 Emulator Library +* +* ======================================================================== +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1991-2004 SciTech Software, Inc. All rights reserved. +* +* This file may be distributed and/or modified under the terms of the +* GNU General Public License version 2.0 as published by the Free +* Software Foundation and appearing in the file LICENSE.GPL included +* in the packaging of this file. +* +* Licensees holding a valid Commercial License for this product from +* SciTech Software, Inc. may use this file in accordance with the +* Commercial License Agreement provided with the Software. +* +* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING +* THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR +* PURPOSE. +* +* See http://www.scitechsoft.com/license/ for information about +* the licensing options available and how to purchase a Commercial +* License Agreement. +* +* Contact license@scitechsoft.com if any conditions of this licensing +* are not clear to you, or you have questions about licensing options. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes BIOS emulator I/O and memory access +* functions. +* +* Jason ported this file to u-boot to run the ATI video card +* BIOS in u-boot. Removed some emulate functions such as the +* timer port access. Made all the VGA port except reading 0x3c3 +* be emulated. Seems like reading 0x3c3 should return the high +* 16 bit of the io port. +* +****************************************************************************/ + +#include "biosemui.h" + +/*------------------------- Global Variables ------------------------------*/ + +#ifndef __i386__ +static char *BE_biosDate = "08/14/99"; +static u8 BE_model = 0xFC; +static u8 BE_submodel = 0x00; +#endif + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to convert + +RETURNS: +Actual memory address to read or write the data + +REMARKS: +This function converts an emulator memory address in a 32-bit range to +a real memory address that we wish to access. It handles splitting up the +memory address space appropriately to access the emulator BIOS image, video +memory and system BIOS etc. +****************************************************************************/ +static u8 *BE_memaddr(u32 addr) +{ + if (addr >= 0xC0000 && addr <= _BE_env.biosmem_limit) { + return (u8*)(_BE_env.biosmem_base + addr - 0xC0000); + } else if (addr > _BE_env.biosmem_limit && addr < 0xD0000) { + DB(printf("BE_memaddr: address %#lx may be invalid!\n", addr);) + return M.mem_base; + } else if (addr >= 0xA0000 && addr <= 0xBFFFF) { + return (u8*)(_BE_env.busmem_base + addr - 0xA0000); + } +#ifdef __i386__ + else if (addr >= 0xD0000 && addr <= 0xFFFFF) { + /* We map the real System BIOS directly on real PC's */ + DB(printf("BE_memaddr: System BIOS address %#lx\n", addr);) + return _BE_env.busmem_base + addr - 0xA0000; + } +#else + else if (addr >= 0xFFFF5 && addr < 0xFFFFE) { + /* Return a faked BIOS date string for non-x86 machines */ + DB(printf("BE_memaddr - Returning BIOS date\n");) + return BE_biosDate + addr - 0xFFFF5; + } else if (addr == 0xFFFFE) { + /* Return system model identifier for non-x86 machines */ + DB(printf("BE_memaddr - Returning model\n");) + return &BE_model; + } else if (addr == 0xFFFFF) { + /* Return system submodel identifier for non-x86 machines */ + DB(printf("BE_memaddr - Returning submodel\n");) + return &BE_submodel; + } +#endif + else if (addr > M.mem_size - 1) { + HALT_SYS(); + return M.mem_base; + } + + return M.mem_base + addr; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Byte value read from emulator memory. + +REMARKS: +Reads a byte value from the emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +u8 X86API BE_rdb(u32 addr) +{ + if (_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF) + return 0; + else { + u8 val = readb_le(BE_memaddr(addr)); + return val; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Word value read from emulator memory. + +REMARKS: +Reads a word value from the emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +u16 X86API BE_rdw(u32 addr) +{ + if (_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF) + return 0; + else { + u8 *base = BE_memaddr(addr); + u16 val = readw_le(base); + return val; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Long value read from emulator memory. + +REMARKS: +Reads a 32-bit value from the emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +u32 X86API BE_rdl(u32 addr) +{ + if (_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF) + return 0; + else { + u8 *base = BE_memaddr(addr); + u32 val = readl_le(base); + return val; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a byte value to emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +void X86API BE_wrb(u32 addr, u8 val) +{ + if (!(_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF)) { + writeb_le(BE_memaddr(addr), val); + } +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a word value to emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +void X86API BE_wrw(u32 addr, u16 val) +{ + if (!(_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF)) { + u8 *base = BE_memaddr(addr); + writew_le(base, val); + + } +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a 32-bit value to emulator memory. We have three distinct memory +regions that are handled differently, which this function handles. +****************************************************************************/ +void X86API BE_wrl(u32 addr, u32 val) +{ + if (!(_BE_env.emulateVGA && addr >= 0xA0000 && addr <= 0xBFFFF)) { + u8 *base = BE_memaddr(addr); + writel_le(base, val); + } +} + +#if defined(DEBUG) || !defined(__i386__) + +/* For Non-Intel machines we may need to emulate some I/O port accesses that + * the BIOS may try to access, such as the PCI config registers. + */ + +#define IS_TIMER_PORT(port) (0x40 <= port && port <= 0x43) +#define IS_CMOS_PORT(port) (0x70 <= port && port <= 0x71) +/*#define IS_VGA_PORT(port) (_BE_env.emulateVGA && 0x3C0 <= port && port <= 0x3DA)*/ +#define IS_VGA_PORT(port) (0x3C0 <= port && port <= 0x3DA) +#define IS_PCI_PORT(port) (0xCF8 <= port && port <= 0xCFF) +#define IS_SPKR_PORT(port) (port == 0x61) + +/**************************************************************************** +PARAMETERS: +port - Port to read from +type - Type of access to perform + +REMARKS: +Performs an emulated read from the Standard VGA I/O ports. If the target +hardware does not support mapping the VGA I/O and memory (such as some +PowerPC systems), we emulate the VGA so that the BIOS will still be able to +set NonVGA display modes such as on ATI hardware. +****************************************************************************/ +static u8 VGA_inpb( + const int port) +{ + u8 val = 0xff; + + switch (port) { + case 0x3C0: + /* 3C0 has funky characteristics because it can act as either + a data register or index register depending on the state + of an internal flip flop in the hardware. Hence we have + to emulate that functionality in here. */ + if (_BE_env.flipFlop3C0 == 0) { + /* Access 3C0 as index register*/ + val = _BE_env.emu3C0; + } + else { + /* Access 3C0 as data register*/ + if (_BE_env.emu3C0 < ATT_C) + val = _BE_env.emu3C1[_BE_env.emu3C0]; + } + _BE_env.flipFlop3C0 ^= 1; + break; + case 0x3C1: + if (_BE_env.emu3C0 < ATT_C) + return _BE_env.emu3C1[_BE_env.emu3C0]; + break; + case 0x3CC: + return _BE_env.emu3C2; + case 0x3C4: + return _BE_env.emu3C4; + case 0x3C5: + if (_BE_env.emu3C4 < ATT_C) + return _BE_env.emu3C5[_BE_env.emu3C4]; + break; + case 0x3C6: + return _BE_env.emu3C6; + case 0x3C7: + return _BE_env.emu3C7; + case 0x3C8: + return _BE_env.emu3C8; + case 0x3C9: + if (_BE_env.emu3C7 < PAL_C) + return _BE_env.emu3C9[_BE_env.emu3C7++]; + break; + case 0x3CE: + return _BE_env.emu3CE; + case 0x3CF: + if (_BE_env.emu3CE < GRA_C) + return _BE_env.emu3CF[_BE_env.emu3CE]; + break; + case 0x3D4: + if (_BE_env.emu3C2 & 0x1) + return _BE_env.emu3D4; + break; + case 0x3D5: + if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) + return _BE_env.emu3D5[_BE_env.emu3D4]; + break; + case 0x3DA: + _BE_env.flipFlop3C0 = 0; + val = _BE_env.emu3DA; + _BE_env.emu3DA ^= 0x9; + break; + } + return val; +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to +type - Type of access to perform + +REMARKS: +Performs an emulated write to one of the 8253 timer registers. For now +we only emulate timer 0 which is the only timer that the BIOS code appears +to use. +****************************************************************************/ +static void VGA_outpb( + int port, + u8 val) +{ + switch (port) { + case 0x3C0: + /* 3C0 has funky characteristics because it can act as either + a data register or index register depending on the state + of an internal flip flop in the hardware. Hence we have + to emulate that functionality in here.*/ + if (_BE_env.flipFlop3C0 == 0) { + /* Access 3C0 as index register*/ + _BE_env.emu3C0 = val; + } + else { + /* Access 3C0 as data register*/ + if (_BE_env.emu3C0 < ATT_C) + _BE_env.emu3C1[_BE_env.emu3C0] = val; + } + _BE_env.flipFlop3C0 ^= 1; + break; + case 0x3C2: + _BE_env.emu3C2 = val; + break; + case 0x3C4: + _BE_env.emu3C4 = val; + break; + case 0x3C5: + if (_BE_env.emu3C4 < ATT_C) + _BE_env.emu3C5[_BE_env.emu3C4] = val; + break; + case 0x3C6: + _BE_env.emu3C6 = val; + break; + case 0x3C7: + _BE_env.emu3C7 = (int)val * 3; + break; + case 0x3C8: + _BE_env.emu3C8 = (int)val * 3; + break; + case 0x3C9: + if (_BE_env.emu3C8 < PAL_C) + _BE_env.emu3C9[_BE_env.emu3C8++] = val; + break; + case 0x3CE: + _BE_env.emu3CE = val; + break; + case 0x3CF: + if (_BE_env.emu3CE < GRA_C) + _BE_env.emu3CF[_BE_env.emu3CE] = val; + break; + case 0x3D4: + if (_BE_env.emu3C2 & 0x1) + _BE_env.emu3D4 = val; + break; + case 0x3D5: + if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) + _BE_env.emu3D5[_BE_env.emu3D4] = val; + break; + } +} + +/**************************************************************************** +PARAMETERS: +regOffset - Offset into register space for non-DWORD accesses +value - Value to write to register for PCI_WRITE_* operations +func - Function to perform (PCIAccessRegFlags) + +RETURNS: +Value read from configuration register for PCI_READ_* operations + +REMARKS: +Accesses a PCI configuration space register by decoding the value currently +stored in the _BE_env.configAddress variable and passing it through to the +portable PCI_accessReg function. +****************************************************************************/ +static u32 BE_accessReg(int regOffset, u32 value, int func) +{ +#ifdef __KERNEL__ + int function, device, bus; + u8 val8; + u16 val16; + u32 val32; + + + /* Decode the configuration register values for the register we wish to + * access + */ + regOffset += (_BE_env.configAddress & 0xFF); + function = (_BE_env.configAddress >> 8) & 0x7; + device = (_BE_env.configAddress >> 11) & 0x1F; + bus = (_BE_env.configAddress >> 16) & 0xFF; + + /* Ignore accesses to all devices other than the one we're POSTing */ + if ((function == _BE_env.vgaInfo.function) && + (device == _BE_env.vgaInfo.device) && + (bus == _BE_env.vgaInfo.bus)) { + switch (func) { + case REG_READ_BYTE: + pci_read_config_byte(_BE_env.vgaInfo.pcidev, regOffset, + &val8); + return val8; + case REG_READ_WORD: + pci_read_config_word(_BE_env.vgaInfo.pcidev, regOffset, + &val16); + return val16; + case REG_READ_DWORD: + pci_read_config_dword(_BE_env.vgaInfo.pcidev, regOffset, + &val32); + return val32; + case REG_WRITE_BYTE: + pci_write_config_byte(_BE_env.vgaInfo.pcidev, regOffset, + value); + + return 0; + case REG_WRITE_WORD: + pci_write_config_word(_BE_env.vgaInfo.pcidev, regOffset, + value); + + return 0; + case REG_WRITE_DWORD: + pci_write_config_dword(_BE_env.vgaInfo.pcidev, + regOffset, value); + + return 0; + } + } + return 0; +#else + PCIDeviceInfo pciInfo; + + pciInfo.mech1 = 1; + pciInfo.slot.i = 0; + pciInfo.slot.p.Function = (_BE_env.configAddress >> 8) & 0x7; + pciInfo.slot.p.Device = (_BE_env.configAddress >> 11) & 0x1F; + pciInfo.slot.p.Bus = (_BE_env.configAddress >> 16) & 0xFF; + pciInfo.slot.p.Enable = 1; + + /* Ignore accesses to all devices other than the one we're POSTing */ + if ((pciInfo.slot.p.Function == + _BE_env.vgaInfo.pciInfo->slot.p.Function) + && (pciInfo.slot.p.Device == _BE_env.vgaInfo.pciInfo->slot.p.Device) + && (pciInfo.slot.p.Bus == _BE_env.vgaInfo.pciInfo->slot.p.Bus)) + return PCI_accessReg((_BE_env.configAddress & 0xFF) + regOffset, + value, func, &pciInfo); + return 0; +#endif +} + +/**************************************************************************** +PARAMETERS: +port - Port to read from +type - Type of access to perform + +REMARKS: +Performs an emulated read from one of the PCI configuration space registers. +We emulate this using our PCI_accessReg function which will access the PCI +configuration space registers in a portable fashion. +****************************************************************************/ +static u32 PCI_inp(int port, int type) +{ + switch (type) { + case REG_READ_BYTE: + if ((_BE_env.configAddress & 0x80000000) && 0xCFC <= port + && port <= 0xCFF) + return BE_accessReg(port - 0xCFC, 0, REG_READ_BYTE); + break; + case REG_READ_WORD: + if ((_BE_env.configAddress & 0x80000000) && 0xCFC <= port + && port <= 0xCFF) + return BE_accessReg(port - 0xCFC, 0, REG_READ_WORD); + break; + case REG_READ_DWORD: + if (port == 0xCF8) + return _BE_env.configAddress; + else if ((_BE_env.configAddress & 0x80000000) && port == 0xCFC) + return BE_accessReg(0, 0, REG_READ_DWORD); + break; + } + return 0; +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to +type - Type of access to perform + +REMARKS: +Performs an emulated write to one of the PCI control registers. +****************************************************************************/ +static void PCI_outp(int port, u32 val, int type) +{ + switch (type) { + case REG_WRITE_BYTE: + if ((_BE_env.configAddress & 0x80000000) && 0xCFC <= port + && port <= 0xCFF) + BE_accessReg(port - 0xCFC, val, REG_WRITE_BYTE); + break; + case REG_WRITE_WORD: + if ((_BE_env.configAddress & 0x80000000) && 0xCFC <= port + && port <= 0xCFF) + BE_accessReg(port - 0xCFC, val, REG_WRITE_WORD); + break; + case REG_WRITE_DWORD: + if (port == 0xCF8) + { + _BE_env.configAddress = val & 0x80FFFFFC; + } + else if ((_BE_env.configAddress & 0x80000000) && port == 0xCFC) + BE_accessReg(0, val, REG_WRITE_DWORD); + break; + } +} + +#endif + +/**************************************************************************** +PARAMETERS: +port - Port to write to + +RETURNS: +Value read from the I/O port + +REMARKS: +Performs an emulated 8-bit read from an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +u8 X86API BE_inb(X86EMU_pioAddr port) +{ + u8 val = 0; + +#if defined(DEBUG) || !defined(__i386__) + if (IS_VGA_PORT(port)){ + /*seems reading port 0x3c3 return the high 16 bit of io port*/ + if(port == 0x3c3) + val = LOG_inpb(port); + else + val = VGA_inpb(port); + } + else if (IS_TIMER_PORT(port)) + DB(printf("Can not interept TIMER port now!\n");) + else if (IS_SPKR_PORT(port)) + DB(printf("Can not interept SPEAKER port now!\n");) + else if (IS_CMOS_PORT(port)) + DB(printf("Can not interept CMOS port now!\n");) + else if (IS_PCI_PORT(port)) + val = PCI_inp(port, REG_READ_BYTE); + else if (port < 0x100) { + DB(printf("WARN: INVALID inb.%04X -> %02X\n", (u16) port, val);) + val = LOG_inpb(port); + } else +#endif + val = LOG_inpb(port); + return val; +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to + +RETURNS: +Value read from the I/O port + +REMARKS: +Performs an emulated 16-bit read from an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +u16 X86API BE_inw(X86EMU_pioAddr port) +{ + u16 val = 0; + +#if defined(DEBUG) || !defined(__i386__) + if (IS_PCI_PORT(port)) + val = PCI_inp(port, REG_READ_WORD); + else if (port < 0x100) { + DB(printf("WARN: Maybe INVALID inw.%04X -> %04X\n", (u16) port, val);) + val = LOG_inpw(port); + } else +#endif + val = LOG_inpw(port); + return val; +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to + +RETURNS: +Value read from the I/O port + +REMARKS: +Performs an emulated 32-bit read from an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +u32 X86API BE_inl(X86EMU_pioAddr port) +{ + u32 val = 0; + +#if defined(DEBUG) || !defined(__i386__) + if (IS_PCI_PORT(port)) + val = PCI_inp(port, REG_READ_DWORD); + else if (port < 0x100) { + val = LOG_inpd(port); + } else +#endif + val = LOG_inpd(port); + return val; +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to +val - Value to write to port + +REMARKS: +Performs an emulated 8-bit write to an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +void X86API BE_outb(X86EMU_pioAddr port, u8 val) +{ +#if defined(DEBUG) || !defined(__i386__) + if (IS_VGA_PORT(port)) + VGA_outpb(port, val); + else if (IS_TIMER_PORT(port)) + DB(printf("Can not interept TIMER port now!\n");) + else if (IS_SPKR_PORT(port)) + DB(printf("Can not interept SPEAKER port now!\n");) + else if (IS_CMOS_PORT(port)) + DB(printf("Can not interept CMOS port now!\n");) + else if (IS_PCI_PORT(port)) + PCI_outp(port, val, REG_WRITE_BYTE); + else if (port < 0x100) { + DB(printf("WARN:Maybe INVALID outb.%04X <- %02X\n", (u16) port, val);) + LOG_outpb(port, val); + } else +#endif + LOG_outpb(port, val); +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to +val - Value to write to port + +REMARKS: +Performs an emulated 16-bit write to an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +void X86API BE_outw(X86EMU_pioAddr port, u16 val) +{ +#if defined(DEBUG) || !defined(__i386__) + if (IS_VGA_PORT(port)) { + VGA_outpb(port, val); + VGA_outpb(port + 1, val >> 8); + } else if (IS_PCI_PORT(port)) + PCI_outp(port, val, REG_WRITE_WORD); + else if (port < 0x100) { + DB(printf("WARN: MAybe INVALID outw.%04X <- %04X\n", (u16) port, + val);) + LOG_outpw(port, val); + } else +#endif + LOG_outpw(port, val); +} + +/**************************************************************************** +PARAMETERS: +port - Port to write to +val - Value to write to port + +REMARKS: +Performs an emulated 32-bit write to an I/O port. We handle special cases +that we need to emulate in here, and fall through to reflecting the write +through to the real hardware if we don't need to special case it. +****************************************************************************/ +void X86API BE_outl(X86EMU_pioAddr port, u32 val) +{ +#if defined(DEBUG) || !defined(__i386__) + if (IS_PCI_PORT(port)) + PCI_outp(port, val, REG_WRITE_DWORD); + else if (port < 0x100) { + DB(printf("WARN: INVALID outl.%04X <- %08X\n", (u16) port,val);) + LOG_outpd(port, val); + } else +#endif + LOG_outpd(port, val); +} diff --git a/drivers/bios_emulator/bios.c b/drivers/bios_emulator/bios.c new file mode 100644 index 0000000..ed5437e --- /dev/null +++ b/drivers/bios_emulator/bios.c @@ -0,0 +1,321 @@ +/**************************************************************************** +* +* BIOS emulator and interface +* to Realmode X86 Emulator Library +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Module implementing the BIOS specific functions. +* +* Jason ported this file to u-boot to run the ATI video card +* video BIOS. +* +****************************************************************************/ + +#include "biosemui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number being serviced + +REMARKS: +Handler for undefined interrupts. +****************************************************************************/ +static void X86API undefined_intr(int intno) +{ + if (BE_rdw(intno * 4 + 2) == BIOS_SEG) { + DB(printf("biosEmu: undefined interrupt %xh called!\n", intno);) + } else + X86EMU_prepareForInt(intno); +} + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number being serviced + +REMARKS: +This function handles the default system BIOS Int 10h (the default is stored +in the Int 42h vector by the system BIOS at bootup). We only need to handle +a small number of special functions used by the BIOS during POST time. +****************************************************************************/ +static void X86API int42(int intno) +{ + if (M.x86.R_AH == 0x12 && M.x86.R_BL == 0x32) { + if (M.x86.R_AL == 0) { + /* Enable CPU accesses to video memory */ + PM_outpb(0x3c2, PM_inpb(0x3cc) | (u8) 0x02); + return; + } else if (M.x86.R_AL == 1) { + /* Disable CPU accesses to video memory */ + PM_outpb(0x3c2, PM_inpb(0x3cc) & (u8) ~ 0x02); + return; + } +#ifdef DEBUG + else { + printf("int42: unknown function AH=0x12, BL=0x32, AL=%#02x\n", + M.x86.R_AL); + } +#endif + } +#ifdef DEBUG + else { + printf("int42: unknown function AH=%#02x, AL=%#02x, BL=%#02x\n", + M.x86.R_AH, M.x86.R_AL, M.x86.R_BL); + } +#endif +} + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number being serviced + +REMARKS: +This function handles the default system BIOS Int 10h. If the POST code +has not yet re-vectored the Int 10h BIOS interrupt vector, we handle this +by simply calling the int42 interrupt handler above. Very early in the +BIOS POST process, the vector gets replaced and we simply let the real +mode interrupt handler process the interrupt. +****************************************************************************/ +static void X86API int10(int intno) +{ + if (BE_rdw(intno * 4 + 2) == BIOS_SEG) + int42(intno); + else + X86EMU_prepareForInt(intno); +} + +/* Result codes returned by the PCI BIOS */ + +#define SUCCESSFUL 0x00 +#define FUNC_NOT_SUPPORT 0x81 +#define BAD_VENDOR_ID 0x83 +#define DEVICE_NOT_FOUND 0x86 +#define BAD_REGISTER_NUMBER 0x87 +#define SET_FAILED 0x88 +#define BUFFER_TOO_SMALL 0x89 + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number being serviced + +REMARKS: +This function handles the default Int 1Ah interrupt handler for the real +mode code, which provides support for the PCI BIOS functions. Since we only +want to allow the real mode BIOS code *only* see the PCI config space for +its own device, we only return information for the specific PCI config +space that we have passed in to the init function. This solves problems +when using the BIOS to warm boot a secondary adapter when there is an +identical adapter before it on the bus (some BIOS'es get confused in this +case). +****************************************************************************/ +static void X86API int1A(int unused) +{ + u16 pciSlot; + +#ifdef __KERNEL__ + u8 interface, subclass, baseclass; + + /* Initialise the PCI slot number */ + pciSlot = ((int)_BE_env.vgaInfo.bus << 8) | + ((int)_BE_env.vgaInfo.device << 3) | (int)_BE_env.vgaInfo.function; +#else +/* Fail if no PCI device information has been registered */ + if (!_BE_env.vgaInfo.pciInfo) + return; + + pciSlot = (u16) (_BE_env.vgaInfo.pciInfo->slot.i >> 8); +#endif + switch (M.x86.R_AX) { + case 0xB101: /* PCI bios present? */ + M.x86.R_AL = 0x00; /* no config space/special cycle generation support */ + M.x86.R_EDX = 0x20494350; /* " ICP" */ + M.x86.R_BX = 0x0210; /* Version 2.10 */ + M.x86.R_CL = 0; /* Max bus number in system */ + CLEAR_FLAG(F_CF); + break; + case 0xB102: /* Find PCI device */ + M.x86.R_AH = DEVICE_NOT_FOUND; +#ifdef __KERNEL__ + if (M.x86.R_DX == _BE_env.vgaInfo.VendorID && + M.x86.R_CX == _BE_env.vgaInfo.DeviceID && M.x86.R_SI == 0) { +#else + if (M.x86.R_DX == _BE_env.vgaInfo.pciInfo->VendorID && + M.x86.R_CX == _BE_env.vgaInfo.pciInfo->DeviceID && + M.x86.R_SI == 0) { +#endif + M.x86.R_AH = SUCCESSFUL; + M.x86.R_BX = pciSlot; + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB103: /* Find PCI class code */ + M.x86.R_AH = DEVICE_NOT_FOUND; +#ifdef __KERNEL__ + pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_PROG, + &interface); + pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_DEVICE, + &subclass); + pci_read_config_byte(_BE_env.vgaInfo.pcidev, + PCI_CLASS_DEVICE + 1, &baseclass); + if (M.x86.R_CL == interface && M.x86.R_CH == subclass + && (u8) (M.x86.R_ECX >> 16) == baseclass) { +#else + if (M.x86.R_CL == _BE_env.vgaInfo.pciInfo->Interface && + M.x86.R_CH == _BE_env.vgaInfo.pciInfo->SubClass && + (u8) (M.x86.R_ECX >> 16) == + _BE_env.vgaInfo.pciInfo->BaseClass) { +#endif + M.x86.R_AH = SUCCESSFUL; + M.x86.R_BX = pciSlot; + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB108: /* Read configuration byte */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_read_config_byte(_BE_env.vgaInfo.pcidev, M.x86.R_DI, + &M.x86.R_CL); +#else + M.x86.R_CL = + (u8) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_BYTE, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB109: /* Read configuration word */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_read_config_word(_BE_env.vgaInfo.pcidev, M.x86.R_DI, + &M.x86.R_CX); +#else + M.x86.R_CX = + (u16) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_WORD, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB10A: /* Read configuration dword */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_read_config_dword(_BE_env.vgaInfo.pcidev, + M.x86.R_DI, &M.x86.R_ECX); +#else + M.x86.R_ECX = + (u32) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_DWORD, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB10B: /* Write configuration byte */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_write_config_byte(_BE_env.vgaInfo.pcidev, + M.x86.R_DI, M.x86.R_CL); +#else + PCI_accessReg(M.x86.R_DI, M.x86.R_CL, PCI_WRITE_BYTE, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB10C: /* Write configuration word */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_write_config_word(_BE_env.vgaInfo.pcidev, + M.x86.R_DI, M.x86.R_CX); +#else + PCI_accessReg(M.x86.R_DI, M.x86.R_CX, PCI_WRITE_WORD, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + case 0xB10D: /* Write configuration dword */ + M.x86.R_AH = BAD_REGISTER_NUMBER; + if (M.x86.R_BX == pciSlot) { + M.x86.R_AH = SUCCESSFUL; +#ifdef __KERNEL__ + pci_write_config_dword(_BE_env.vgaInfo.pcidev, + M.x86.R_DI, M.x86.R_ECX); +#else + PCI_accessReg(M.x86.R_DI, M.x86.R_ECX, PCI_WRITE_DWORD, + _BE_env.vgaInfo.pciInfo); +#endif + } + CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF); + break; + default: + printf("biosEmu/bios.int1a: unknown function AX=%#04x\n", + M.x86.R_AX); + } +} + +/**************************************************************************** +REMARKS: +This function initialises the BIOS emulation functions for the specific +PCI display device. We insulate the real mode BIOS from any other devices +on the bus, so that it will work correctly thinking that it is the only +device present on the bus (ie: avoiding any adapters present in from of +the device we are trying to control). +****************************************************************************/ +#define BE_constLE_32(v) ((((((v)&0xff00)>>8)|(((v)&0xff)<<8))<<16)|(((((v)&0xff000000)>>8)|(((v)&0x00ff0000)<<8))>>16)) + +void _BE_bios_init(u32 * intrTab) +{ + int i; + X86EMU_intrFuncs bios_intr_tab[256]; + + for (i = 0; i < 256; ++i) { + intrTab[i] = BE_constLE_32(BIOS_SEG << 16); + bios_intr_tab[i] = undefined_intr; + } + bios_intr_tab[0x10] = int10; + bios_intr_tab[0x1A] = int1A; + bios_intr_tab[0x42] = int42; + bios_intr_tab[0x6D] = int10; + X86EMU_setupIntrFuncs(bios_intr_tab); +} diff --git a/drivers/bios_emulator/biosemu.c b/drivers/bios_emulator/biosemu.c new file mode 100644 index 0000000..aca594c --- /dev/null +++ b/drivers/bios_emulator/biosemu.c @@ -0,0 +1,370 @@ +/**************************************************************************** +* +* BIOS emulator and interface +* to Realmode X86 Emulator Library +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Module implementing the system specific functions. This +* module is always compiled and linked in the OS depedent +* libraries, and never in a binary portable driver. +* +* Jason ported this file to u-boot to run the ATI video card BIOS +* in u-boot. Made all the video memory be emulated during the +* BIOS runing process which may affect the VGA function but the +* frambuffer function can work after run the BIOS. +* +****************************************************************************/ + +#include "biosemui.h" +#include + +BE_sysEnv _BE_env = {{0}}; +static X86EMU_memFuncs _BE_mem __attribute__((section(".got2"))) = { + BE_rdb, + BE_rdw, + BE_rdl, + BE_wrb, + BE_wrw, + BE_wrl, + }; + +static X86EMU_pioFuncs _BE_pio __attribute__((section(".got2"))) = { + BE_inb, + BE_inw, + BE_inl, + BE_outb, + BE_outw, + BE_outl, + }; + +#define OFF(addr) (u16)(((addr) >> 0) & 0xffff) +#define SEG(addr) (u16)(((addr) >> 4) & 0xf000) + +/**************************************************************************** +PARAMETERS: +debugFlags - Flags to enable debugging options (debug builds only) +memSize - Amount of memory to allocate for real mode machine +info - Pointer to default VGA device information + +REMARKS: +This functions initialises the BElib, and uses the passed in +BIOS image as the BIOS that is used and emulated at 0xC0000. +****************************************************************************/ +int X86API BE_init(u32 debugFlags, int memSize, BE_VGAInfo * info, int shared) +{ +#if !defined(__DRIVER__) && !defined(__KERNEL__) + + PM_init(); +#endif + memset(&M, 0, sizeof(M)); + if (memSize < 20480){ + printf("Emulator requires at least 20Kb of memory!\n"); + return 0; + } + + M.mem_base = (unsigned long)malloc(memSize); + + if (M.mem_base == NULL){ + printf("Biosemu:Out of memory!"); + return 0; + } + M.mem_size = memSize; + + _BE_env.emulateVGA = 0; + _BE_env.busmem_base = (unsigned long)malloc(128 * 1024); + if (_BE_env.busmem_base == NULL){ + printf("Biosemu:Out of memory!"); + return 0; + } + M.x86.debug = debugFlags; + _BE_bios_init((u32*)info->LowMem); + X86EMU_setupMemFuncs(&_BE_mem); + X86EMU_setupPioFuncs(&_BE_pio); + BE_setVGA(info); + return 1; +} + +/**************************************************************************** +PARAMETERS: +info - Pointer to VGA device information to make current + +REMARKS: +This function sets the VGA BIOS functions in the emulator to point to the +specific VGA BIOS in use. This includes swapping the BIOS interrupt +vectors, BIOS image and BIOS data area to the new BIOS. This allows the +real mode BIOS to be swapped without resetting the entire emulator. +****************************************************************************/ +void X86API BE_setVGA(BE_VGAInfo * info) +{ + +#ifdef __KERNEL__ + _BE_env.vgaInfo.function = info->function; + _BE_env.vgaInfo.device = info->device; + _BE_env.vgaInfo.bus = info->bus; + _BE_env.vgaInfo.pcidev = info->pcidev; +#else + _BE_env.vgaInfo.pciInfo = info->pciInfo; +#endif + _BE_env.vgaInfo.BIOSImage = info->BIOSImage; + if (info->BIOSImage) { + _BE_env.biosmem_base = (ulong) info->BIOSImage; + _BE_env.biosmem_limit = 0xC0000 + info->BIOSImageLen - 1; + } else { + _BE_env.biosmem_base = _BE_env.busmem_base + 0x20000; + _BE_env.biosmem_limit = 0xC7FFF; + } + if (*((u32 *) info->LowMem) == 0) + _BE_bios_init((u32 *) info->LowMem); + memcpy((u8 *) M.mem_base, info->LowMem, sizeof(info->LowMem)); +} + +/**************************************************************************** +PARAMETERS: +info - Pointer to VGA device information to retrieve current + +REMARKS: +This function returns the VGA BIOS functions currently active in the +emulator, so they can be restored at a later date. +****************************************************************************/ +void X86API BE_getVGA(BE_VGAInfo * info) +{ +#ifdef __KERNEL__ + info->function = _BE_env.vgaInfo.function; + info->device = _BE_env.vgaInfo.device; + info->bus = _BE_env.vgaInfo.bus; + info->pcidev = _BE_env.vgaInfo.pcidev; +#else + info->pciInfo = _BE_env.vgaInfo.pciInfo; +#endif + info->BIOSImage = _BE_env.vgaInfo.BIOSImage; + memcpy(info->LowMem, (u8 *) M.mem_base, sizeof(info->LowMem)); +} + +/**************************************************************************** +PARAMETERS: +r_seg - Segment for pointer to convert +r_off - Offset for pointer to convert + +REMARKS: +This function maps a real mode pointer in the emulator memory to a protected +mode pointer that can be used to directly access the memory. + +NOTE: The memory is *always* in little endian format, son on non-x86 + systems you will need to do endian translations to access this + memory. +****************************************************************************/ +void *X86API BE_mapRealPointer(uint r_seg, uint r_off) +{ + u32 addr = ((u32) r_seg << 4) + r_off; + + if (addr >= 0xC0000 && addr <= _BE_env.biosmem_limit) { + return (void *)(_BE_env.biosmem_base + addr - 0xC0000); + } else if (addr >= 0xA0000 && addr <= 0xFFFFF) { + return (void *)(_BE_env.busmem_base + addr - 0xA0000); + } + return (void *)(M.mem_base + addr); +} + +/**************************************************************************** +PARAMETERS: +len - Return the length of the VESA buffer +rseg - Place to store VESA buffer segment +roff - Place to store VESA buffer offset + +REMARKS: +This function returns the address of the VESA transfer buffer in real +_BE_piomode emulator memory. The VESA transfer buffer is always 1024 bytes long, +and located at 15Kb into the start of the real mode memory (16Kb is where +we put the real mode code we execute for issuing interrupts). + +NOTE: The memory is *always* in little endian format, son on non-x86 + systems you will need to do endian translations to access this + memory. +****************************************************************************/ +void *X86API BE_getVESABuf(uint * len, uint * rseg, uint * roff) +{ + *len = 1024; + *rseg = SEG(0x03C00); + *roff = OFF(0x03C00); + return (void *)(M.mem_base + ((u32) * rseg << 4) + *roff); +} + +/**************************************************************************** +REMARKS: +Cleans up and exits the emulator. +****************************************************************************/ +void X86API BE_exit(void) +{ + free(M.mem_base); + free(_BE_env.busmem_base); +} + +/**************************************************************************** +PARAMETERS: +seg - Segment of code to call +off - Offset of code to call +regs - Real mode registers to load +sregs - Real mode segment registers to load + +REMARKS: +This functions calls a real mode far function at the specified address, +and loads all the x86 registers from the passed in registers structure. +On exit the registers returned from the call are returned in the same +structures. +****************************************************************************/ +void X86API BE_callRealMode(uint seg, uint off, RMREGS * regs, RMSREGS * sregs) +{ + M.x86.R_EAX = regs->e.eax; + M.x86.R_EBX = regs->e.ebx; + M.x86.R_ECX = regs->e.ecx; + M.x86.R_EDX = regs->e.edx; + M.x86.R_ESI = regs->e.esi; + M.x86.R_EDI = regs->e.edi; + M.x86.R_DS = sregs->ds; + M.x86.R_ES = sregs->es; + M.x86.R_FS = sregs->fs; + M.x86.R_GS = sregs->gs; + + ((u8 *) M.mem_base)[0x4000] = 0x9A; + ((u8 *) M.mem_base)[0x4001] = (u8) off; + ((u8 *) M.mem_base)[0x4002] = (u8) (off >> 8); + ((u8 *) M.mem_base)[0x4003] = (u8) seg; + ((u8 *) M.mem_base)[0x4004] = (u8) (seg >> 8); + ((u8 *) M.mem_base)[0x4005] = 0xF1; /* Illegal op-code */ + M.x86.R_CS = SEG(0x04000); + M.x86.R_IP = OFF(0x04000); + + M.x86.R_SS = SEG(M.mem_size - 2); + M.x86.R_SP = OFF(M.mem_size - 2) + 2; + + X86EMU_exec(); + + regs->e.cflag = M.x86.R_EFLG & F_CF; + regs->e.eax = M.x86.R_EAX; + regs->e.ebx = M.x86.R_EBX; + regs->e.ecx = M.x86.R_ECX; + regs->e.edx = M.x86.R_EDX; + regs->e.esi = M.x86.R_ESI; + regs->e.edi = M.x86.R_EDI; + sregs->ds = M.x86.R_DS; + sregs->es = M.x86.R_ES; + sregs->fs = M.x86.R_FS; + sregs->gs = M.x86.R_GS; +} + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number to execute +in - Real mode registers to load +out - Place to store resulting real mode registers + +REMARKS: +This functions calls a real mode interrupt function at the specified address, +and loads all the x86 registers from the passed in registers structure. +On exit the registers returned from the call are returned in out stucture. +****************************************************************************/ +int X86API BE_int86(int intno, RMREGS * in, RMREGS * out) +{ + M.x86.R_EAX = in->e.eax; + M.x86.R_EBX = in->e.ebx; + M.x86.R_ECX = in->e.ecx; + M.x86.R_EDX = in->e.edx; + M.x86.R_ESI = in->e.esi; + M.x86.R_EDI = in->e.edi; + ((u8 *) M.mem_base)[0x4000] = 0xCD; + ((u8 *) M.mem_base)[0x4001] = (u8) intno; + ((u8 *) M.mem_base)[0x4002] = 0xF1; + M.x86.R_CS = SEG(0x04000); + M.x86.R_IP = OFF(0x04000); + + M.x86.R_SS = SEG(M.mem_size - 1); + M.x86.R_SP = OFF(M.mem_size - 1) - 1; + + X86EMU_exec(); + out->e.cflag = M.x86.R_EFLG & F_CF; + out->e.eax = M.x86.R_EAX; + out->e.ebx = M.x86.R_EBX; + out->e.ecx = M.x86.R_ECX; + out->e.edx = M.x86.R_EDX; + out->e.esi = M.x86.R_ESI; + out->e.edi = M.x86.R_EDI; + return out->x.ax; +} + +/**************************************************************************** +PARAMETERS: +intno - Interrupt number to execute +in - Real mode registers to load +out - Place to store resulting real mode registers +sregs - Real mode segment registers to load + +REMARKS: +This functions calls a real mode interrupt function at the specified address, +and loads all the x86 registers from the passed in registers structure. +On exit the registers returned from the call are returned in out stucture. +****************************************************************************/ +int X86API BE_int86x(int intno, RMREGS * in, RMREGS * out, RMSREGS * sregs) +{ + M.x86.R_EAX = in->e.eax; + M.x86.R_EBX = in->e.ebx; + M.x86.R_ECX = in->e.ecx; + M.x86.R_EDX = in->e.edx; + M.x86.R_ESI = in->e.esi; + M.x86.R_EDI = in->e.edi; + M.x86.R_DS = sregs->ds; + M.x86.R_ES = sregs->es; + M.x86.R_FS = sregs->fs; + M.x86.R_GS = sregs->gs; + ((u8 *) M.mem_base)[0x4000] = 0xCD; + ((u8 *) M.mem_base)[0x4001] = (u8) intno; + ((u8 *) M.mem_base)[0x4002] = 0xF1; + M.x86.R_CS = SEG(0x04000); + M.x86.R_IP = OFF(0x04000); + + M.x86.R_SS = SEG(M.mem_size - 1); + M.x86.R_SP = OFF(M.mem_size - 1) - 1; + + X86EMU_exec(); + out->e.cflag = M.x86.R_EFLG & F_CF; + out->e.eax = M.x86.R_EAX; + out->e.ebx = M.x86.R_EBX; + out->e.ecx = M.x86.R_ECX; + out->e.edx = M.x86.R_EDX; + out->e.esi = M.x86.R_ESI; + out->e.edi = M.x86.R_EDI; + sregs->ds = M.x86.R_DS; + sregs->es = M.x86.R_ES; + sregs->fs = M.x86.R_FS; + sregs->gs = M.x86.R_GS; + return out->x.ax; +} diff --git a/drivers/bios_emulator/biosemui.h b/drivers/bios_emulator/biosemui.h new file mode 100644 index 0000000..3265ac1 --- /dev/null +++ b/drivers/bios_emulator/biosemui.h @@ -0,0 +1,169 @@ +/**************************************************************************** +* +* BIOS emulator and interface +* to Realmode X86 Emulator Library +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Internal header file for the BIOS emulator library. +* +* Jason ported this file to u-boot, Added some architecture +* related Macro. +* +****************************************************************************/ + +#ifndef __BIOSEMUI_H +#define __BIOSEMUI_H + +#include "biosemu.h" +#include +/*---------------------- Macros and type definitions ----------------------*/ + +#ifdef DEBUG +#define DB(x) x +#else +#define DB(x) do{}while(0); +#endif + +#define BIOS_SEG 0xfff0 +extern X86EMU_sysEnv _X86EMU_env; +#define M _X86EMU_env + +/* Macros to read and write values to x86 emulator memory. Memory is always + * considered to be little endian, so we use macros to do endian swapping + * where necessary. + */ + +#ifdef __BIG_ENDIAN__ +#define readb_le(base) *((u8*)(base)) +#define readw_le(base) ((u16)readb_le(base) | ((u16)readb_le((base) + 1) << 8)) +#define readl_le(base) ((u32)readb_le((base) + 0) | ((u32)readb_le((base) + 1) << 8) | \ + ((u32)readb_le((base) + 2) << 16) | ((u32)readb_le((base) + 3) << 24)) +#define writeb_le(base, v) *((u8*)(base)) = (v) +#define writew_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ + writeb_le(base + 1, (v >> 8) & 0xff) +#define writel_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ + writeb_le(base + 1, (v >> 8) & 0xff), \ + writeb_le(base + 2, (v >> 16) & 0xff), \ + writeb_le(base + 3, (v >> 24) & 0xff) +#else +#define readb_le(base) *((u8*)(base)) +#define readw_le(base) *((u16*)(base)) +#define readl_le(base) *((u32*)(base)) +#define writeb_le(base, v) *((u8*)(base)) = (v) +#define writew_le(base, v) *((u16*)(base)) = (v) +#define writel_le(base, v) *((u32*)(base)) = (v) +#endif + +/**************************************************************************** +REMARKS: +Function codes passed to the emulated I/O port functions to determine the +type of operation to perform. +****************************************************************************/ +typedef enum { + REG_READ_BYTE = 0, + REG_READ_WORD = 1, + REG_READ_DWORD = 2, + REG_WRITE_BYTE = 3, + REG_WRITE_WORD = 4, + REG_WRITE_DWORD = 5 +} RegisterFlags; + +/**************************************************************************** +REMARKS: +Function codes passed to the emulated I/O port functions to determine the +type of operation to perform. +****************************************************************************/ +typedef enum { + PORT_BYTE = 1, + PORT_WORD = 2, + PORT_DWORD = 3, +} PortInfoFlags; + +/**************************************************************************** +REMARKS: +Data structure used to describe the details for the BIOS emulator system +environment as used by the X86 emulator library. + +HEADER: +biosemu.h + +MEMBERS: +type - Type of port access (1 = byte, 2 = word, 3 = dword) +defVal - Default power on value +finalVal - Final value +****************************************************************************/ +typedef struct { + u8 type; + u32 defVal; + u32 finalVal; +} BE_portInfo; + +#define PM_inpb(port) inb(port+VIDEO_IO_OFFSET) +#define PM_inpw(port) inw(port+VIDEO_IO_OFFSET) +#define PM_inpd(port) inl(port+VIDEO_IO_OFFSET) +#define PM_outpb(port,val) outb(val,port+VIDEO_IO_OFFSET) +#define PM_outpw(port,val) outw(val,port+VIDEO_IO_OFFSET) +#define PM_outpd(port,val) outl(val,port+VIDEO_IO_OFFSET) + +#define LOG_inpb(port) PM_inpb(port) +#define LOG_inpw(port) PM_inpw(port) +#define LOG_inpd(port) PM_inpd(port) +#define LOG_outpb(port,val) PM_outpb(port,val) +#define LOG_outpw(port,val) PM_outpw(port,val) +#define LOG_outpd(port,val) PM_outpd(port,val) + +/*-------------------------- Function Prototypes --------------------------*/ + +/* bios.c */ + +void _BE_bios_init(u32 * intrTab); +void _BE_setup_funcs(void); + +/* besys.c */ +#define DEBUG_IO() (M.x86.debug & DEBUG_IO_TRACE_F) + +u8 X86API BE_rdb(u32 addr); +u16 X86API BE_rdw(u32 addr); +u32 X86API BE_rdl(u32 addr); +void X86API BE_wrb(u32 addr, u8 val); +void X86API BE_wrw(u32 addr, u16 val); +void X86API BE_wrl(u32 addr, u32 val); + +u8 X86API BE_inb(X86EMU_pioAddr port); +u16 X86API BE_inw(X86EMU_pioAddr port); +u32 X86API BE_inl(X86EMU_pioAddr port); +void X86API BE_outb(X86EMU_pioAddr port, u8 val); +void X86API BE_outw(X86EMU_pioAddr port, u16 val); +void X86API BE_outl(X86EMU_pioAddr port, u32 val); +#endif +/* __BIOSEMUI_H */ diff --git a/drivers/bios_emulator/include/biosemu.h b/drivers/bios_emulator/include/biosemu.h new file mode 100644 index 0000000..13cb317 --- /dev/null +++ b/drivers/bios_emulator/include/biosemu.h @@ -0,0 +1,392 @@ +/**************************************************************************** +* +* BIOS emulator and interface +* to Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for the real mode x86 BIOS emulator, which is +* used to warmboot any number of VGA compatible PCI/AGP +* controllers under any OS, on any processor family that +* supports PCI. We also allow the user application to call +* real mode BIOS functions and Int 10h functions (including +* the VESA BIOS). +* +****************************************************************************/ + +#ifndef __BIOSEMU_H +#define __BIOSEMU_H + +#ifdef __KERNEL__ +#include "x86emu.h" +#else +#include "x86emu.h" +#include "pmapi.h" +#include "pcilib.h" +#endif + +/*---------------------- Macros and type definitions ----------------------*/ + +#pragma pack(1) + +#ifndef __KERNEL__ +/**************************************************************************** +REMARKS: +Data structure used to describe the details specific to a particular VGA +controller. This information is used to allow the VGA controller to be +swapped on the fly within the BIOS emulator. + +HEADER: +biosemu.h + +MEMBERS: +pciInfo - PCI device information block for the controller +BIOSImage - Pointer to a read/write copy of the BIOS image +BIOSImageLen - Length of the BIOS image +LowMem - Copy of key low memory areas +****************************************************************************/ +typedef struct { + PCIDeviceInfo *pciInfo; + void *BIOSImage; + ulong BIOSImageLen; + uchar LowMem[1536]; +} BE_VGAInfo; +#else +/**************************************************************************** +REMARKS: +Data structure used to describe the details for the BIOS emulator system +environment as used by the X86 emulator library. + +HEADER: +biosemu.h + +MEMBERS: +vgaInfo - VGA BIOS information structure +biosmem_base - Base of the BIOS image +biosmem_limit - Limit of the BIOS image +busmem_base - Base of the VGA bus memory +****************************************************************************/ +typedef struct { + int function; + int device; + int bus; + u32 VendorID; + u32 DeviceID; + pci_dev_t pcidev; + void *BIOSImage; + u32 BIOSImageLen; + u8 LowMem[1536]; +} BE_VGAInfo; + +#endif /* __KERNEL__ */ + +#define CRT_C 24 /* 24 CRT Controller Registers */ +#define ATT_C 21 /* 21 Attribute Controller Registers */ +#define GRA_C 9 /* 9 Graphics Controller Registers */ +#define SEQ_C 5 /* 5 Sequencer Registers */ +#define PAL_C 768 /* 768 Palette Registers */ + +/**************************************************************************** +REMARKS: +Data structure used to describe the details for the BIOS emulator system +environment as used by the X86 emulator library. + +HEADER: +biosemu.h + +MEMBERS: +vgaInfo - VGA BIOS information structure +biosmem_base - Base of the BIOS image +biosmem_limit - Limit of the BIOS image +busmem_base - Base of the VGA bus memory +timer - Timer used to emulate PC timer ports +timer0 - Latched value for timer 0 +timer0Latched - True if timer 0 value was just latched +timer2 - Current value for timer 2 +emulateVGA - True to emulate VGA I/O and memory accesses +****************************************************************************/ + +typedef struct { + BE_VGAInfo vgaInfo; + ulong biosmem_base; + ulong biosmem_limit; + ulong busmem_base; + + u32 timer0; + int timer0Latched; + u32 timer1; + int timer1Latched; + u32 timer2; + int timer2Latched; + + int emulateVGA; + u8 emu61; + u8 emu70; + int flipFlop3C0; + u32 configAddress; + u8 emu3C0; + u8 emu3C1[ATT_C]; + u8 emu3C2; + u8 emu3C4; + u8 emu3C5[SEQ_C]; + u8 emu3C6; + uint emu3C7; + uint emu3C8; + u8 emu3C9[PAL_C]; + u8 emu3CE; + u8 emu3CF[GRA_C]; + u8 emu3D4; + u8 emu3D5[CRT_C]; + u8 emu3DA; + +} BE_sysEnv; + +#ifdef __KERNEL__ + +/* Define some types when compiling for the Linux kernel that normally + * come from the SciTech PM library. + */ + +/**************************************************************************** +REMARKS: +Structure describing the 32-bit extended x86 CPU registers + +HEADER: +pmapi.h + +MEMBERS: +eax - Value of the EAX register +ebx - Value of the EBX register +ecx - Value of the ECX register +edx - Value of the EDX register +esi - Value of the ESI register +edi - Value of the EDI register +cflag - Value of the carry flag +****************************************************************************/ +typedef struct { + u32 eax; + u32 ebx; + u32 ecx; + u32 edx; + u32 esi; + u32 edi; + u32 cflag; +} RMDWORDREGS; + +/**************************************************************************** +REMARKS: +Structure describing the 16-bit x86 CPU registers + +HEADER: +pmapi.h + +MEMBERS: +ax - Value of the AX register +bx - Value of the BX register +cx - Value of the CX register +dx - Value of the DX register +si - Value of the SI register +di - Value of the DI register +cflag - Value of the carry flag +****************************************************************************/ +#ifdef __BIG_ENDIAN__ +typedef struct { + u16 ax_hi, ax; + u16 bx_hi, bx; + u16 cx_hi, cx; + u16 dx_hi, dx; + u16 si_hi, si; + u16 di_hi, di; + u16 cflag_hi, cflag; +} RMWORDREGS; +#else +typedef struct { + u16 ax, ax_hi; + u16 bx, bx_hi; + u16 cx, cx_hi; + u16 dx, dx_hi; + u16 si, si_hi; + u16 di, di_hi; + u16 cflag, cflag_hi; +} RMWORDREGS; +#endif + +/**************************************************************************** +REMARKS: +Structure describing the 8-bit x86 CPU registers + +HEADER: +pmapi.h + +MEMBERS: +al - Value of the AL register +ah - Value of the AH register +bl - Value of the BL register +bh - Value of the BH register +cl - Value of the CL register +ch - Value of the CH register +dl - Value of the DL register +dh - Value of the DH register +****************************************************************************/ +#ifdef __BIG_ENDIAN__ +typedef struct { + u16 ax_hi; + u8 ah, al; + u16 bx_hi; + u8 bh, bl; + u16 cx_hi; + u8 ch, cl; + u16 dx_hi; + u8 dh, dl; +} RMBYTEREGS; +#else +typedef struct { + u8 al; + u8 ah; + u16 ax_hi; + u8 bl; + u8 bh; + u16 bx_hi; + u8 cl; + u8 ch; + u16 cx_hi; + u8 dl; + u8 dh; + u16 dx_hi; +} RMBYTEREGS; +#endif + +/**************************************************************************** +REMARKS: +Structure describing all the x86 CPU registers + +HEADER: +pmapi.h + +MEMBERS: +e - Member to access registers as 32-bit values +x - Member to access registers as 16-bit values +h - Member to access registers as 8-bit values +****************************************************************************/ +typedef union { + RMDWORDREGS e; + RMWORDREGS x; + RMBYTEREGS h; +} RMREGS; + +/**************************************************************************** +REMARKS: +Structure describing all the x86 segment registers + +HEADER: +pmapi.h + +MEMBERS: +es - ES segment register +cs - CS segment register +ss - SS segment register +ds - DS segment register +fs - FS segment register +gs - GS segment register +****************************************************************************/ +typedef struct { + u16 es; + u16 cs; + u16 ss; + u16 ds; + u16 fs; + u16 gs; +} RMSREGS; + +#endif /* __KERNEL__ */ + +#ifndef __KERNEL__ + +/**************************************************************************** +REMARKS: +Structure defining all the BIOS Emulator API functions as exported from +the Binary Portable DLL. +{secret} +****************************************************************************/ +typedef struct { + ulong dwSize; + ibool(PMAPIP BE_init) (u32 debugFlags, int memSize, BE_VGAInfo * info); + void (PMAPIP BE_setVGA) (BE_VGAInfo * info); + void (PMAPIP BE_getVGA) (BE_VGAInfo * info); + void *(PMAPIP BE_mapRealPointer) (uint r_seg, uint r_off); + void *(PMAPIP BE_getVESABuf) (uint * len, uint * rseg, uint * roff); + void (PMAPIP BE_callRealMode) (uint seg, uint off, RMREGS * regs, + RMSREGS * sregs); + int (PMAPIP BE_int86) (int intno, RMREGS * in, RMREGS * out); + int (PMAPIP BE_int86x) (int intno, RMREGS * in, RMREGS * out, + RMSREGS * sregs); + void *reserved1; + void (PMAPIP BE_exit) (void); +} BE_exports; + +/**************************************************************************** +REMARKS: +Function pointer type for the Binary Portable DLL initialisation entry point. +{secret} +****************************************************************************/ +typedef BE_exports *(PMAPIP BE_initLibrary_t) (PM_imports * PMImp); +#endif + +#pragma pack() + +/*---------------------------- Global variables ---------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* {secret} Global BIOS emulator system environment */ + extern BE_sysEnv _BE_env; + +/*-------------------------- Function Prototypes --------------------------*/ + +/* BIOS emulator library entry points */ + int X86API BE_init(u32 debugFlags, int memSize, BE_VGAInfo * info, + int shared); + void X86API BE_setVGA(BE_VGAInfo * info); + void X86API BE_getVGA(BE_VGAInfo * info); + void X86API BE_setDebugFlags(u32 debugFlags); + void *X86API BE_mapRealPointer(uint r_seg, uint r_off); + void *X86API BE_getVESABuf(uint * len, uint * rseg, uint * roff); + void X86API BE_callRealMode(uint seg, uint off, RMREGS * regs, + RMSREGS * sregs); + int X86API BE_int86(int intno, RMREGS * in, RMREGS * out); + int X86API BE_int86x(int intno, RMREGS * in, RMREGS * out, + RMSREGS * sregs); + void X86API BE_exit(void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __BIOSEMU_H */ diff --git a/drivers/bios_emulator/include/x86emu.h b/drivers/bios_emulator/include/x86emu.h new file mode 100644 index 0000000..6004beb --- /dev/null +++ b/drivers/bios_emulator/include/x86emu.h @@ -0,0 +1,191 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for public specific functions. +* Any application linking against us should only +* include this header +* +****************************************************************************/ + +#ifndef __X86EMU_X86EMU_H +#define __X86EMU_X86EMU_H + +#include +#include +#include +#include +#define X86API +#define X86APIP * +typedef u16 X86EMU_pioAddr; + +#include "x86emu/regs.h" + +/*---------------------- Macros and type definitions ----------------------*/ + +#pragma pack(1) + +/**************************************************************************** +REMARKS: +Data structure containing ponters to programmed I/O functions used by the +emulator. This is used so that the user program can hook all programmed +I/O for the emulator to handled as necessary by the user program. By +default the emulator contains simple functions that do not do access the +hardware in any way. To allow the emualtor access the hardware, you will +need to override the programmed I/O functions using the X86EMU_setupPioFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +inb - Function to read a byte from an I/O port +inw - Function to read a word from an I/O port +inl - Function to read a dword from an I/O port +outb - Function to write a byte to an I/O port +outw - Function to write a word to an I/O port +outl - Function to write a dword to an I/O port +****************************************************************************/ +typedef struct { + u8(X86APIP inb) (X86EMU_pioAddr addr); + u16(X86APIP inw) (X86EMU_pioAddr addr); + u32(X86APIP inl) (X86EMU_pioAddr addr); + void (X86APIP outb) (X86EMU_pioAddr addr, u8 val); + void (X86APIP outw) (X86EMU_pioAddr addr, u16 val); + void (X86APIP outl) (X86EMU_pioAddr addr, u32 val); +} X86EMU_pioFuncs; + +/**************************************************************************** +REMARKS: +Data structure containing ponters to memory access functions used by the +emulator. This is used so that the user program can hook all memory +access functions as necessary for the emulator. By default the emulator +contains simple functions that only access the internal memory of the +emulator. If you need specialised functions to handle access to different +types of memory (ie: hardware framebuffer accesses and BIOS memory access +etc), you will need to override this using the X86EMU_setupMemFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +rdb - Function to read a byte from an address +rdw - Function to read a word from an address +rdl - Function to read a dword from an address +wrb - Function to write a byte to an address +wrw - Function to write a word to an address +wrl - Function to write a dword to an address +****************************************************************************/ +typedef struct { + u8(X86APIP rdb) (u32 addr); + u16(X86APIP rdw) (u32 addr); + u32(X86APIP rdl) (u32 addr); + void (X86APIP wrb) (u32 addr, u8 val); + void (X86APIP wrw) (u32 addr, u16 val); + void (X86APIP wrl) (u32 addr, u32 val); +} X86EMU_memFuncs; + +/**************************************************************************** + Here are the default memory read and write + function in case they are needed as fallbacks. +***************************************************************************/ +extern u8 X86API rdb(u32 addr); +extern u16 X86API rdw(u32 addr); +extern u32 X86API rdl(u32 addr); +extern void X86API wrb(u32 addr, u8 val); +extern void X86API wrw(u32 addr, u16 val); +extern void X86API wrl(u32 addr, u32 val); + +#pragma pack() + +/*--------------------- type definitions -----------------------------------*/ + +typedef void (X86APIP X86EMU_intrFuncs) (int num); +extern X86EMU_intrFuncs _X86EMU_intrTab[256]; + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs); + void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs); + void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]); + void X86EMU_prepareForInt(int num); + +/* decode.c */ + + void X86EMU_exec(void); + void X86EMU_halt_sys(void); + +#ifdef DEBUG +#define HALT_SYS() \ + printf("halt_sys: file %s, line %d\n", __FILE__, __LINE__), \ + X86EMU_halt_sys() +#else +#define HALT_SYS() X86EMU_halt_sys() +#endif + +/* Debug options */ + +#define DEBUG_DECODE_F 0x0001 /* print decoded instruction */ +#define DEBUG_TRACE_F 0x0002 /* dump regs before/after execution */ +#define DEBUG_STEP_F 0x0004 +#define DEBUG_DISASSEMBLE_F 0x0008 +#define DEBUG_BREAK_F 0x0010 +#define DEBUG_SVC_F 0x0020 +#define DEBUG_SAVE_CS_IP 0x0040 +#define DEBUG_FS_F 0x0080 +#define DEBUG_PROC_F 0x0100 +#define DEBUG_SYSINT_F 0x0200 /* bios system interrupts. */ +#define DEBUG_TRACECALL_F 0x0400 +#define DEBUG_INSTRUMENT_F 0x0800 +#define DEBUG_MEM_TRACE_F 0x1000 +#define DEBUG_IO_TRACE_F 0x2000 +#define DEBUG_TRACECALL_REGS_F 0x4000 +#define DEBUG_DECODE_NOPRINT_F 0x8000 +#define DEBUG_EXIT 0x10000 +#define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F) + + void X86EMU_trace_regs(void); + void X86EMU_trace_xregs(void); + void X86EMU_dump_memory(u16 seg, u16 off, u32 amt); + int X86EMU_trace_on(void); + int X86EMU_trace_off(void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_X86EMU_H */ diff --git a/drivers/bios_emulator/include/x86emu/debug.h b/drivers/bios_emulator/include/x86emu/debug.h new file mode 100644 index 0000000..35e1e9a --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/debug.h @@ -0,0 +1,209 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for debug definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_DEBUG_H +#define __X86EMU_DEBUG_H + +/*---------------------- Macros and type definitions ----------------------*/ + +/* checks to be enabled for "runtime" */ + +#define CHECK_IP_FETCH_F 0x1 +#define CHECK_SP_ACCESS_F 0x2 +#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */ +#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset */ + +#ifdef DEBUG +# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F) +# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F) +# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F) +# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F) +#else +# define CHECK_IP_FETCH() +# define CHECK_SP_ACCESS() +# define CHECK_MEM_ACCESS() +# define CHECK_DATA_ACCESS() +#endif + +#ifdef DEBUG +# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F) +# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F) +# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F) +# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F) +# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F) +# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F) +# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F) +# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_CS_IP) + +# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F) +# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F) +# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F) +# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F) +# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F) +# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F) +# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F) +# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F) +# define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F) +#else +# define DEBUG_INSTRUMENT() 0 +# define DEBUG_DECODE() 0 +# define DEBUG_TRACE() 0 +# define DEBUG_STEP() 0 +# define DEBUG_DISASSEMBLE() 0 +# define DEBUG_BREAK() 0 +# define DEBUG_SVC() 0 +# define DEBUG_SAVE_IP_CS() 0 +# define DEBUG_FS() 0 +# define DEBUG_PROC() 0 +# define DEBUG_SYSINT() 0 +# define DEBUG_TRACECALL() 0 +# define DEBUG_TRACECALLREGS() 0 +# define DEBUG_SYS() 0 +# define DEBUG_MEM_TRACE() 0 +# define DEBUG_IO_TRACE() 0 +# define DEBUG_DECODE_NOPRINT() 0 +#endif + +#ifdef DEBUG + +# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \ + x86emu_decode_printf(x) +# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \ + x86emu_decode_printf2(x,y) + +/* + * The following allow us to look at the bytes of an instruction. The + * first INCR_INSTRN_LEN, is called everytime bytes are consumed in + * the decoding process. The SAVE_IP_CS is called initially when the + * major opcode of the instruction is accessed. + */ +#define INC_DECODED_INST_LEN(x) \ + if (DEBUG_DECODE()) \ + x86emu_inc_decoded_inst_len(x) + +#define SAVE_IP_CS(x,y) \ + if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \ + | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \ + M.x86.saved_cs = x; \ + M.x86.saved_ip = y; \ + } +#else +# define INC_DECODED_INST_LEN(x) +# define DECODE_PRINTF(x) +# define DECODE_PRINTF2(x,y) +# define SAVE_IP_CS(x,y) +#endif + +#ifdef DEBUG +#define TRACE_REGS() \ + if (DEBUG_DISASSEMBLE()) { \ + x86emu_just_disassemble(); \ + goto EndOfTheInstructionProcedure; \ + } \ + if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs() +#else +# define TRACE_REGS() +#endif + +#ifdef DEBUG +# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step() +#else +# define SINGLE_STEP() +#endif + +#define TRACE_AND_STEP() \ + TRACE_REGS(); \ + SINGLE_STEP() + +#ifdef DEBUG +# define START_OF_INSTR() +# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr(); +# define END_OF_INSTR_NO_TRACE() x86emu_end_instr(); +#else +# define START_OF_INSTR() +# define END_OF_INSTR() +# define END_OF_INSTR_NO_TRACE() +#endif + +#ifdef DEBUG +# define CALL_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x); +# define RETURN_TRACE(n,u,v) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: %s\n",u,v,n); +#else +# define CALL_TRACE(u,v,w,x,s) +# define RETURN_TRACE(n,u,v) +#endif + +#ifdef DEBUG +#define DB(x) x +#else +#define DB(x) +#endif + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + extern void x86emu_inc_decoded_inst_len(int x); + extern void x86emu_decode_printf(char *x); + extern void x86emu_decode_printf2(char *x, int y); + extern void x86emu_just_disassemble(void); + extern void x86emu_single_step(void); + extern void x86emu_end_instr(void); + extern void x86emu_dump_regs(void); + extern void x86emu_dump_xregs(void); + extern void x86emu_print_int_vect(u16 iv); + extern void x86emu_instrument_instruction(void); + extern void x86emu_check_ip_access(void); + extern void x86emu_check_sp_access(void); + extern void x86emu_check_mem_access(u32 p); + extern void x86emu_check_data_access(uint s, uint o); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_DEBUG_H */ diff --git a/drivers/bios_emulator/include/x86emu/decode.h b/drivers/bios_emulator/include/x86emu/decode.h new file mode 100644 index 0000000..77769f0 --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/decode.h @@ -0,0 +1,88 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for instruction decoding logic. +* +****************************************************************************/ + +#ifndef __X86EMU_DECODE_H +#define __X86EMU_DECODE_H + +/*---------------------- Macros and type definitions ----------------------*/ + +/* Instruction Decoding Stuff */ + +#define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) +#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) +#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) +#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) +#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +void x86emu_intr_raise (u8 type); +void fetch_decode_modrm (int *mod,int *regh,int *regl); +u8 fetch_byte_imm (void); +u16 fetch_word_imm (void); +u32 fetch_long_imm (void); +u8 fetch_data_byte (uint offset); +u8 fetch_data_byte_abs (uint segment, uint offset); +u16 fetch_data_word (uint offset); +u16 fetch_data_word_abs (uint segment, uint offset); +u32 fetch_data_long (uint offset); +u32 fetch_data_long_abs (uint segment, uint offset); +void store_data_byte (uint offset, u8 val); +void store_data_byte_abs (uint segment, uint offset, u8 val); +void store_data_word (uint offset, u16 val); +void store_data_word_abs (uint segment, uint offset, u16 val); +void store_data_long (uint offset, u32 val); +void store_data_long_abs (uint segment, uint offset, u32 val); +u8* decode_rm_byte_register(int reg); +u16* decode_rm_word_register(int reg); +u32* decode_rm_long_register(int reg); +u16* decode_rm_seg_register(int reg); +unsigned decode_rm00_address(int rm); +unsigned decode_rm01_address(int rm); +unsigned decode_rm10_address(int rm); +unsigned decode_rmXX_address(int mod, int rm); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_DECODE_H */ diff --git a/drivers/bios_emulator/include/x86emu/ops.h b/drivers/bios_emulator/include/x86emu/ops.h new file mode 100644 index 0000000..a4f2316 --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/ops.h @@ -0,0 +1,45 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for operand decoding functions. +* +****************************************************************************/ + +#ifndef __X86EMU_OPS_H +#define __X86EMU_OPS_H + +extern void (*x86emu_optab[0x100])(u8 op1); +extern void (*x86emu_optab2[0x100])(u8 op2); + +#endif /* __X86EMU_OPS_H */ diff --git a/drivers/bios_emulator/include/x86emu/prim_asm.h b/drivers/bios_emulator/include/x86emu/prim_asm.h new file mode 100644 index 0000000..4cb4cab --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/prim_asm.h @@ -0,0 +1,970 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: Watcom C++ 10.6 or later +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Inline assembler versions of the primitive operand +* functions for faster performance. At the moment this is +* x86 inline assembler, but these functions could be replaced +* with native inline assembler for each supported processor +* platform. +* +****************************************************************************/ + +#ifndef __X86EMU_PRIM_ASM_H +#define __X86EMU_PRIM_ASM_H + +#ifdef __WATCOMC__ + +#ifndef VALIDATE +#define __HAVE_INLINE_ASSEMBLER__ +#endif + +u32 get_flags_asm(void); +#pragma aux get_flags_asm = \ + "pushf" \ + "pop eax" \ + value [eax] \ + modify exact [eax]; + +u16 aaa_word_asm(u32 * flags, u16 d); +#pragma aux aaa_word_asm = \ + "push [edi]" \ + "popf" \ + "aaa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aas_word_asm(u32 * flags, u16 d); +#pragma aux aas_word_asm = \ + "push [edi]" \ + "popf" \ + "aas" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aad_word_asm(u32 * flags, u16 d); +#pragma aux aad_word_asm = \ + "push [edi]" \ + "popf" \ + "aad" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aam_word_asm(u32 * flags, u8 d); +#pragma aux aam_word_asm = \ + "push [edi]" \ + "popf" \ + "aam" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [ax] \ + modify exact [ax]; + +u8 adc_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux adc_byte_asm = \ + "push [edi]" \ + "popf" \ + "adc al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 adc_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux adc_word_asm = \ + "push [edi]" \ + "popf" \ + "adc ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 adc_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux adc_long_asm = \ + "push [edi]" \ + "popf" \ + "adc eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 add_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux add_byte_asm = \ + "push [edi]" \ + "popf" \ + "add al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 add_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux add_word_asm = \ + "push [edi]" \ + "popf" \ + "add ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 add_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux add_long_asm = \ + "push [edi]" \ + "popf" \ + "add eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 and_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux and_byte_asm = \ + "push [edi]" \ + "popf" \ + "and al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 and_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux and_word_asm = \ + "push [edi]" \ + "popf" \ + "and ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 and_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux and_long_asm = \ + "push [edi]" \ + "popf" \ + "and eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 cmp_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux cmp_byte_asm = \ + "push [edi]" \ + "popf" \ + "cmp al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 cmp_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux cmp_word_asm = \ + "push [edi]" \ + "popf" \ + "cmp ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 cmp_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux cmp_long_asm = \ + "push [edi]" \ + "popf" \ + "cmp eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 daa_byte_asm(u32 * flags, u8 d); +#pragma aux daa_byte_asm = \ + "push [edi]" \ + "popf" \ + "daa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 das_byte_asm(u32 * flags, u8 d); +#pragma aux das_byte_asm = \ + "push [edi]" \ + "popf" \ + "das" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 dec_byte_asm(u32 * flags, u8 d); +#pragma aux dec_byte_asm = \ + "push [edi]" \ + "popf" \ + "dec al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 dec_word_asm(u32 * flags, u16 d); +#pragma aux dec_word_asm = \ + "push [edi]" \ + "popf" \ + "dec ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 dec_long_asm(u32 * flags, u32 d); +#pragma aux dec_long_asm = \ + "push [edi]" \ + "popf" \ + "dec eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 inc_byte_asm(u32 * flags, u8 d); +#pragma aux inc_byte_asm = \ + "push [edi]" \ + "popf" \ + "inc al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 inc_word_asm(u32 * flags, u16 d); +#pragma aux inc_word_asm = \ + "push [edi]" \ + "popf" \ + "inc ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 inc_long_asm(u32 * flags, u32 d); +#pragma aux inc_long_asm = \ + "push [edi]" \ + "popf" \ + "inc eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 or_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux or_byte_asm = \ + "push [edi]" \ + "popf" \ + "or al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 or_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux or_word_asm = \ + "push [edi]" \ + "popf" \ + "or ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 or_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux or_long_asm = \ + "push [edi]" \ + "popf" \ + "or eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 neg_byte_asm(u32 * flags, u8 d); +#pragma aux neg_byte_asm = \ + "push [edi]" \ + "popf" \ + "neg al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 neg_word_asm(u32 * flags, u16 d); +#pragma aux neg_word_asm = \ + "push [edi]" \ + "popf" \ + "neg ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 neg_long_asm(u32 * flags, u32 d); +#pragma aux neg_long_asm = \ + "push [edi]" \ + "popf" \ + "neg eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 not_byte_asm(u32 * flags, u8 d); +#pragma aux not_byte_asm = \ + "push [edi]" \ + "popf" \ + "not al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 not_word_asm(u32 * flags, u16 d); +#pragma aux not_word_asm = \ + "push [edi]" \ + "popf" \ + "not ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 not_long_asm(u32 * flags, u32 d); +#pragma aux not_long_asm = \ + "push [edi]" \ + "popf" \ + "not eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 rcl_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux rcl_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcl_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux rcl_word_asm = \ + "push [edi]" \ + "popf" \ + "rcl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcl_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux rcl_long_asm = \ + "push [edi]" \ + "popf" \ + "rcl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rcr_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux rcr_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcr_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux rcr_word_asm = \ + "push [edi]" \ + "popf" \ + "rcr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcr_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux rcr_long_asm = \ + "push [edi]" \ + "popf" \ + "rcr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rol_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux rol_byte_asm = \ + "push [edi]" \ + "popf" \ + "rol al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rol_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux rol_word_asm = \ + "push [edi]" \ + "popf" \ + "rol ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rol_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux rol_long_asm = \ + "push [edi]" \ + "popf" \ + "rol eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 ror_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux ror_byte_asm = \ + "push [edi]" \ + "popf" \ + "ror al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 ror_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux ror_word_asm = \ + "push [edi]" \ + "popf" \ + "ror ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 ror_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux ror_long_asm = \ + "push [edi]" \ + "popf" \ + "ror eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shl_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux shl_byte_asm = \ + "push [edi]" \ + "popf" \ + "shl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shl_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux shl_word_asm = \ + "push [edi]" \ + "popf" \ + "shl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shl_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux shl_long_asm = \ + "push [edi]" \ + "popf" \ + "shl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shr_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux shr_byte_asm = \ + "push [edi]" \ + "popf" \ + "shr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shr_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux shr_word_asm = \ + "push [edi]" \ + "popf" \ + "shr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shr_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux shr_long_asm = \ + "push [edi]" \ + "popf" \ + "shr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 sar_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux sar_byte_asm = \ + "push [edi]" \ + "popf" \ + "sar al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 sar_word_asm(u32 * flags, u16 d, u8 s); +#pragma aux sar_word_asm = \ + "push [edi]" \ + "popf" \ + "sar ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 sar_long_asm(u32 * flags, u32 d, u8 s); +#pragma aux sar_long_asm = \ + "push [edi]" \ + "popf" \ + "sar eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u16 shld_word_asm(u32 * flags, u16 d, u16 fill, u8 s); +#pragma aux shld_word_asm = \ + "push [edi]" \ + "popf" \ + "shld ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shld_long_asm(u32 * flags, u32 d, u32 fill, u8 s); +#pragma aux shld_long_asm = \ + "push [edi]" \ + "popf" \ + "shld eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u16 shrd_word_asm(u32 * flags, u16 d, u16 fill, u8 s); +#pragma aux shrd_word_asm = \ + "push [edi]" \ + "popf" \ + "shrd ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shrd_long_asm(u32 * flags, u32 d, u32 fill, u8 s); +#pragma aux shrd_long_asm = \ + "push [edi]" \ + "popf" \ + "shrd eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u8 sbb_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux sbb_byte_asm = \ + "push [edi]" \ + "popf" \ + "sbb al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sbb_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux sbb_word_asm = \ + "push [edi]" \ + "popf" \ + "sbb ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sbb_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux sbb_long_asm = \ + "push [edi]" \ + "popf" \ + "sbb eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 sub_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux sub_byte_asm = \ + "push [edi]" \ + "popf" \ + "sub al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sub_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux sub_word_asm = \ + "push [edi]" \ + "popf" \ + "sub ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sub_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux sub_long_asm = \ + "push [edi]" \ + "popf" \ + "sub eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void test_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux test_byte_asm = \ + "push [edi]" \ + "popf" \ + "test al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + modify exact [al bl]; + +void test_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux test_word_asm = \ + "push [edi]" \ + "popf" \ + "test ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + modify exact [ax bx]; + +void test_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux test_long_asm = \ + "push [edi]" \ + "popf" \ + "test eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + modify exact [eax ebx]; + +u8 xor_byte_asm(u32 * flags, u8 d, u8 s); +#pragma aux xor_byte_asm = \ + "push [edi]" \ + "popf" \ + "xor al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 xor_word_asm(u32 * flags, u16 d, u16 s); +#pragma aux xor_word_asm = \ + "push [edi]" \ + "popf" \ + "xor ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 xor_long_asm(u32 * flags, u32 d, u32 s); +#pragma aux xor_long_asm = \ + "push [edi]" \ + "popf" \ + "xor eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void imul_byte_asm(u32 * flags, u16 * ax, u8 d, u8 s); +#pragma aux imul_byte_asm = \ + "push [edi]" \ + "popf" \ + "imul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void imul_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 d, u16 s); +#pragma aux imul_word_asm = \ + "push [edi]" \ + "popf" \ + "imul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void imul_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 d, u32 s); +#pragma aux imul_long_asm = \ + "push [edi]" \ + "popf" \ + "imul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void mul_byte_asm(u32 * flags, u16 * ax, u8 d, u8 s); +#pragma aux mul_byte_asm = \ + "push [edi]" \ + "popf" \ + "mul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void mul_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 d, u16 s); +#pragma aux mul_word_asm = \ + "push [edi]" \ + "popf" \ + "mul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void mul_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 d, u32 s); +#pragma aux mul_long_asm = \ + "push [edi]" \ + "popf" \ + "mul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void idiv_byte_asm(u32 * flags, u8 * al, u8 * ah, u16 d, u8 s); +#pragma aux idiv_byte_asm = \ + "push [edi]" \ + "popf" \ + "idiv bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void idiv_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 dlo, u16 dhi, u16 s); +#pragma aux idiv_word_asm = \ + "push [edi]" \ + "popf" \ + "idiv bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void idiv_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 dlo, u32 dhi, u32 s); +#pragma aux idiv_long_asm = \ + "push [edi]" \ + "popf" \ + "idiv ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +void div_byte_asm(u32 * flags, u8 * al, u8 * ah, u16 d, u8 s); +#pragma aux div_byte_asm = \ + "push [edi]" \ + "popf" \ + "div bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void div_word_asm(u32 * flags, u16 * ax, u16 * dx, u16 dlo, u16 dhi, u16 s); +#pragma aux div_word_asm = \ + "push [edi]" \ + "popf" \ + "div bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void div_long_asm(u32 * flags, u32 * eax, u32 * edx, u32 dlo, u32 dhi, u32 s); +#pragma aux div_long_asm = \ + "push [edi]" \ + "popf" \ + "div ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +#endif + +#endif /* __X86EMU_PRIM_ASM_H */ diff --git a/drivers/bios_emulator/include/x86emu/prim_ops.h b/drivers/bios_emulator/include/x86emu/prim_ops.h new file mode 100644 index 0000000..0ea825d --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/prim_ops.h @@ -0,0 +1,142 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for primitive operation functions. +* +****************************************************************************/ + +#ifndef __X86EMU_PRIM_OPS_H +#define __X86EMU_PRIM_OPS_H + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +u16 aaa_word (u16 d); +u16 aas_word (u16 d); +u16 aad_word (u16 d); +u16 aam_word (u8 d); +u8 adc_byte (u8 d, u8 s); +u16 adc_word (u16 d, u16 s); +u32 adc_long (u32 d, u32 s); +u8 add_byte (u8 d, u8 s); +u16 add_word (u16 d, u16 s); +u32 add_long (u32 d, u32 s); +u8 and_byte (u8 d, u8 s); +u16 and_word (u16 d, u16 s); +u32 and_long (u32 d, u32 s); +u8 cmp_byte (u8 d, u8 s); +u16 cmp_word (u16 d, u16 s); +u32 cmp_long (u32 d, u32 s); +u8 daa_byte (u8 d); +u8 das_byte (u8 d); +u8 dec_byte (u8 d); +u16 dec_word (u16 d); +u32 dec_long (u32 d); +u8 inc_byte (u8 d); +u16 inc_word (u16 d); +u32 inc_long (u32 d); +u8 or_byte (u8 d, u8 s); +u16 or_word (u16 d, u16 s); +u32 or_long (u32 d, u32 s); +u8 neg_byte (u8 s); +u16 neg_word (u16 s); +u32 neg_long (u32 s); +u8 not_byte (u8 s); +u16 not_word (u16 s); +u32 not_long (u32 s); +u8 rcl_byte (u8 d, u8 s); +u16 rcl_word (u16 d, u8 s); +u32 rcl_long (u32 d, u8 s); +u8 rcr_byte (u8 d, u8 s); +u16 rcr_word (u16 d, u8 s); +u32 rcr_long (u32 d, u8 s); +u8 rol_byte (u8 d, u8 s); +u16 rol_word (u16 d, u8 s); +u32 rol_long (u32 d, u8 s); +u8 ror_byte (u8 d, u8 s); +u16 ror_word (u16 d, u8 s); +u32 ror_long (u32 d, u8 s); +u8 shl_byte (u8 d, u8 s); +u16 shl_word (u16 d, u8 s); +u32 shl_long (u32 d, u8 s); +u8 shr_byte (u8 d, u8 s); +u16 shr_word (u16 d, u8 s); +u32 shr_long (u32 d, u8 s); +u8 sar_byte (u8 d, u8 s); +u16 sar_word (u16 d, u8 s); +u32 sar_long (u32 d, u8 s); +u16 shld_word (u16 d, u16 fill, u8 s); +u32 shld_long (u32 d, u32 fill, u8 s); +u16 shrd_word (u16 d, u16 fill, u8 s); +u32 shrd_long (u32 d, u32 fill, u8 s); +u8 sbb_byte (u8 d, u8 s); +u16 sbb_word (u16 d, u16 s); +u32 sbb_long (u32 d, u32 s); +u8 sub_byte (u8 d, u8 s); +u16 sub_word (u16 d, u16 s); +u32 sub_long (u32 d, u32 s); +void test_byte (u8 d, u8 s); +void test_word (u16 d, u16 s); +void test_long (u32 d, u32 s); +u8 xor_byte (u8 d, u8 s); +u16 xor_word (u16 d, u16 s); +u32 xor_long (u32 d, u32 s); +void imul_byte (u8 s); +void imul_word (u16 s); +void imul_long (u32 s); +void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s); +void mul_byte (u8 s); +void mul_word (u16 s); +void mul_long (u32 s); +void idiv_byte (u8 s); +void idiv_word (u16 s); +void idiv_long (u32 s); +void div_byte (u8 s); +void div_word (u16 s); +void div_long (u32 s); +void ins (int size); +void outs (int size); +u16 mem_access_word (int addr); +void push_word (u16 w); +void push_long (u32 w); +u16 pop_word (void); +u32 pop_long (void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_PRIM_OPS_H */ + diff --git a/drivers/bios_emulator/include/x86emu/regs.h b/drivers/bios_emulator/include/x86emu/regs.h new file mode 100644 index 0000000..9dbed50 --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/regs.h @@ -0,0 +1,340 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for x86 register definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_REGS_H +#define __X86EMU_REGS_H + +/*---------------------- Macros and type definitions ----------------------*/ + +#pragma pack(1) + +/* + * General EAX, EBX, ECX, EDX type registers. Note that for + * portability, and speed, the issue of byte swapping is not addressed + * in the registers. All registers are stored in the default format + * available on the host machine. The only critical issue is that the + * registers should line up EXACTLY in the same manner as they do in + * the 386. That is: + * + * EAX & 0xff === AL + * EAX & 0xffff == AX + * + * etc. The result is that alot of the calculations can then be + * done using the native instruction set fully. + */ + +#ifdef __BIG_ENDIAN__ + +typedef struct { + u32 e_reg; +} I32_reg_t; + +typedef struct { + u16 filler0, x_reg; +} I16_reg_t; + +typedef struct { + u8 filler0, filler1, h_reg, l_reg; +} I8_reg_t; + +#else /* !__BIG_ENDIAN__ */ + +typedef struct { + u32 e_reg; +} I32_reg_t; + +typedef struct { + u16 x_reg; +} I16_reg_t; + +typedef struct { + u8 l_reg, h_reg; +} I8_reg_t; + +#endif /* BIG_ENDIAN */ + +typedef union { + I32_reg_t I32_reg; + I16_reg_t I16_reg; + I8_reg_t I8_reg; +} i386_general_register; + +struct i386_general_regs { + i386_general_register A, B, C, D; +}; + +typedef struct i386_general_regs Gen_reg_t; + +struct i386_special_regs { + i386_general_register SP, BP, SI, DI, IP; + u32 FLAGS; +}; + +/* + * Segment registers here represent the 16 bit quantities + * CS, DS, ES, SS. + */ + +#undef CS +#undef DS +#undef SS +#undef ES +#undef FS +#undef GS + +struct i386_segment_regs { + u16 CS, DS, SS, ES, FS, GS; +}; + +/* 8 bit registers */ +#define R_AH gen.A.I8_reg.h_reg +#define R_AL gen.A.I8_reg.l_reg +#define R_BH gen.B.I8_reg.h_reg +#define R_BL gen.B.I8_reg.l_reg +#define R_CH gen.C.I8_reg.h_reg +#define R_CL gen.C.I8_reg.l_reg +#define R_DH gen.D.I8_reg.h_reg +#define R_DL gen.D.I8_reg.l_reg + +/* 16 bit registers */ +#define R_AX gen.A.I16_reg.x_reg +#define R_BX gen.B.I16_reg.x_reg +#define R_CX gen.C.I16_reg.x_reg +#define R_DX gen.D.I16_reg.x_reg + +/* 32 bit extended registers */ +#define R_EAX gen.A.I32_reg.e_reg +#define R_EBX gen.B.I32_reg.e_reg +#define R_ECX gen.C.I32_reg.e_reg +#define R_EDX gen.D.I32_reg.e_reg + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_ESP spc.SP.I32_reg.e_reg +#define R_EBP spc.BP.I32_reg.e_reg +#define R_ESI spc.SI.I32_reg.e_reg +#define R_EDI spc.DI.I32_reg.e_reg +#define R_EIP spc.IP.I32_reg.e_reg +#define R_EFLG spc.FLAGS + +/* segment registers */ +#define R_CS seg.CS +#define R_DS seg.DS +#define R_SS seg.SS +#define R_ES seg.ES +#define R_FS seg.FS +#define R_GS seg.GS + +/* flag conditions */ +#define FB_CF 0x0001 /* CARRY flag */ +#define FB_PF 0x0004 /* PARITY flag */ +#define FB_AF 0x0010 /* AUX flag */ +#define FB_ZF 0x0040 /* ZERO flag */ +#define FB_SF 0x0080 /* SIGN flag */ +#define FB_TF 0x0100 /* TRAP flag */ +#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define FB_DF 0x0400 /* DIR flag */ +#define FB_OF 0x0800 /* OVERFLOW flag */ + +/* 80286 and above always have bit#1 set */ +#define F_ALWAYS_ON (0x0002) /* flag bits always on */ + +/* + * Define a mask for only those flag bits we will ever pass back + * (via PUSHF) + */ +#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF) + +/* following bits masked in to a 16bit quantity */ + +#define F_CF 0x0001 /* CARRY flag */ +#define F_PF 0x0004 /* PARITY flag */ +#define F_AF 0x0010 /* AUX flag */ +#define F_ZF 0x0040 /* ZERO flag */ +#define F_SF 0x0080 /* SIGN flag */ +#define F_TF 0x0100 /* TRAP flag */ +#define F_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define F_DF 0x0400 /* DIR flag */ +#define F_OF 0x0800 /* OVERFLOW flag */ + +#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag)) +#define SET_FLAG(flag) (M.x86.R_FLG |= (flag)) +#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag)) +#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag)) +#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0) + +#define CONDITIONAL_SET_FLAG(COND,FLAG) \ + if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG) + +#define F_PF_CALC 0x010000 /* PARITY flag has been calced */ +#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ +#define F_SF_CALC 0x040000 /* SIGN flag has been calced */ + +#define F_ALL_CALC 0xff0000 /* All have been calced */ + +/* + * Emulator machine state. + * Segment usage control. + */ +#define SYSMODE_SEG_DS_SS 0x00000001 +#define SYSMODE_SEGOVR_CS 0x00000002 +#define SYSMODE_SEGOVR_DS 0x00000004 +#define SYSMODE_SEGOVR_ES 0x00000008 +#define SYSMODE_SEGOVR_FS 0x00000010 +#define SYSMODE_SEGOVR_GS 0x00000020 +#define SYSMODE_SEGOVR_SS 0x00000040 +#define SYSMODE_PREFIX_REPE 0x00000080 +#define SYSMODE_PREFIX_REPNE 0x00000100 +#define SYSMODE_PREFIX_DATA 0x00000200 +#define SYSMODE_PREFIX_ADDR 0x00000400 +#define SYSMODE_INTR_PENDING 0x10000000 +#define SYSMODE_EXTRN_INTR 0x20000000 +#define SYSMODE_HALTED 0x40000000 + +#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS) +#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS | \ + SYSMODE_PREFIX_DATA | \ + SYSMODE_PREFIX_ADDR) + +#define INTR_SYNCH 0x1 +#define INTR_ASYNCH 0x2 +#define INTR_HALTED 0x4 + +typedef struct { + struct i386_general_regs gen; + struct i386_special_regs spc; + struct i386_segment_regs seg; + /* + * MODE contains information on: + * REPE prefix 2 bits repe,repne + * SEGMENT overrides 5 bits normal,DS,SS,CS,ES + * Delayed flag set 3 bits (zero, signed, parity) + * reserved 6 bits + * interrupt # 8 bits instruction raised interrupt + * BIOS video segregs 4 bits + * Interrupt Pending 1 bits + * Extern interrupt 1 bits + * Halted 1 bits + */ + long mode; + u8 intno; + volatile int intr; /* mask of pending interrupts */ + int debug; +#ifdef DEBUG + int check; + u16 saved_ip; + u16 saved_cs; + int enc_pos; + int enc_str_pos; + char decode_buf[32]; /* encoded byte stream */ + char decoded_buf[256]; /* disassembled strings */ +#endif +} X86EMU_regs; + +/**************************************************************************** +REMARKS: +Structure maintaining the emulator machine state. + +MEMBERS: +x86 - X86 registers +mem_base - Base real mode memory for the emulator +mem_size - Size of the real mode memory block for the emulator +****************************************************************************/ +#undef x86 +typedef struct { + X86EMU_regs x86; + u8 *mem_base; + u32 mem_size; + void *private; +} X86EMU_sysEnv; + +#pragma pack() + +/*----------------------------- Global Variables --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* Global emulator machine state. + * + * We keep it global to avoid pointer dereferences in the code for speed. + */ + + extern X86EMU_sysEnv _X86EMU_env; +#define M _X86EMU_env + +/*-------------------------- Function Prototypes --------------------------*/ + +/* Function to log information at runtime */ + +#ifndef __KERNEL__ + void printk(const char *fmt, ...); +#endif + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_REGS_H */ diff --git a/drivers/bios_emulator/include/x86emu/x86emui.h b/drivers/bios_emulator/include/x86emu/x86emui.h new file mode 100644 index 0000000..a74957d --- /dev/null +++ b/drivers/bios_emulator/include/x86emu/x86emui.h @@ -0,0 +1,101 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for system specific functions. These functions +* are always compiled and linked in the OS depedent libraries, +* and never in a binary portable driver. +* +****************************************************************************/ + +#ifndef __X86EMU_X86EMUI_H +#define __X86EMU_X86EMUI_H + +/* If we are compiling in C++ mode, we can compile some functions as + * inline to increase performance (however the code size increases quite + * dramatically in this case). + */ + +#if defined(__cplusplus) && !defined(_NO_INLINE) +#define _INLINE inline +#else +#define _INLINE static +#endif + +/* Get rid of unused parameters in C++ compilation mode */ + +#ifdef __cplusplus +#define X86EMU_UNUSED(v) +#else +#define X86EMU_UNUSED(v) v +#endif + +#include "x86emu.h" +#include "x86emu/regs.h" +#include "x86emu/debug.h" +#include "x86emu/decode.h" +#include "x86emu/ops.h" +#include "x86emu/prim_ops.h" +#ifndef __KERNEL__ +#include +#include +#include +#endif + +#define printk printf + + +/*--------------------------- Inline Functions ----------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + + extern u8(X86APIP sys_rdb) (u32 addr); + extern u16(X86APIP sys_rdw) (u32 addr); + extern u32(X86APIP sys_rdl) (u32 addr); + extern void (X86APIP sys_wrb) (u32 addr, u8 val); + extern void (X86APIP sys_wrw) (u32 addr, u16 val); + extern void (X86APIP sys_wrl) (u32 addr, u32 val); + + extern u8(X86APIP sys_inb) (X86EMU_pioAddr addr); + extern u16(X86APIP sys_inw) (X86EMU_pioAddr addr); + extern u32(X86APIP sys_inl) (X86EMU_pioAddr addr); + extern void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val); + extern void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val); + extern void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif +#endif /* __X86EMU_X86EMUI_H */ diff --git a/drivers/bios_emulator/x86emu/debug.c b/drivers/bios_emulator/x86emu/debug.c new file mode 100644 index 0000000..0f58a69 --- /dev/null +++ b/drivers/bios_emulator/x86emu/debug.c @@ -0,0 +1,461 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to handle debugging of the +* emulator. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" +#include + +/*----------------------------- Implementation ----------------------------*/ + +#ifdef DEBUG + +static void print_encoded_bytes(u16 s, u16 o); +static void print_decoded_instruction(void); +static int parse_line(char *s, int *ps, int *n); + +/* should look something like debug's output. */ +void X86EMU_trace_regs(void) +{ + if (DEBUG_TRACE()) { + x86emu_dump_regs(); + } + if (DEBUG_DECODE() && !DEBUG_DECODE_NOPRINT()) { + printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); + } +} + +void X86EMU_trace_xregs(void) +{ + if (DEBUG_TRACE()) { + x86emu_dump_xregs(); + } +} + +void x86emu_just_disassemble(void) +{ + /* + * This routine called if the flag DEBUG_DISASSEMBLE is set kind + * of a hack! + */ + printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); +} + +static void disassemble_forward(u16 seg, u16 off, int n) +{ + X86EMU_sysEnv tregs; + int i; + u8 op1; + /* + * hack, hack, hack. What we do is use the exact machinery set up + * for execution, except that now there is an additional state + * flag associated with the "execution", and we are using a copy + * of the register struct. All the major opcodes, once fully + * decoded, have the following two steps: TRACE_REGS(r,m); + * SINGLE_STEP(r,m); which disappear if DEBUG is not defined to + * the preprocessor. The TRACE_REGS macro expands to: + * + * if (debug&DEBUG_DISASSEMBLE) + * {just_disassemble(); goto EndOfInstruction;} + * if (debug&DEBUG_TRACE) trace_regs(r,m); + * + * ...... and at the last line of the routine. + * + * EndOfInstruction: end_instr(); + * + * Up to the point where TRACE_REG is expanded, NO modifications + * are done to any register EXCEPT the IP register, for fetch and + * decoding purposes. + * + * This was done for an entirely different reason, but makes a + * nice way to get the system to help debug codes. + */ + tregs = M; + tregs.x86.R_IP = off; + tregs.x86.R_CS = seg; + + /* reset the decoding buffers */ + tregs.x86.enc_str_pos = 0; + tregs.x86.enc_pos = 0; + + /* turn on the "disassemble only, no execute" flag */ + tregs.x86.debug |= DEBUG_DISASSEMBLE_F; + + /* DUMP NEXT n instructions to screen in straight_line fashion */ + /* + * This looks like the regular instruction fetch stream, except + * that when this occurs, each fetched opcode, upon seeing the + * DEBUG_DISASSEMBLE flag set, exits immediately after decoding + * the instruction. XXX --- CHECK THAT MEM IS NOT AFFECTED!!! + * Note the use of a copy of the register structure... + */ + for (i = 0; i < n; i++) { + op1 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); + (x86emu_optab[op1]) (op1); + } + /* end major hack mode. */ +} + +void x86emu_check_ip_access(void) +{ + /* NULL as of now */ +} + +void x86emu_check_sp_access(void) +{ +} + +void x86emu_check_mem_access(u32 dummy) +{ + /* check bounds, etc */ +} + +void x86emu_check_data_access(uint dummy1, uint dummy2) +{ + /* check bounds, etc */ +} + +void x86emu_inc_decoded_inst_len(int x) +{ + M.x86.enc_pos += x; +} + +void x86emu_decode_printf(char *x) +{ + sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", x); + M.x86.enc_str_pos += strlen(x); +} + +void x86emu_decode_printf2(char *x, int y) +{ + char temp[100]; + sprintf(temp, x, y); + sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", temp); + M.x86.enc_str_pos += strlen(temp); +} + +void x86emu_end_instr(void) +{ + M.x86.enc_str_pos = 0; + M.x86.enc_pos = 0; +} + +static void print_encoded_bytes(u16 s, u16 o) +{ + int i; + char buf1[64]; + for (i = 0; i < M.x86.enc_pos; i++) { + sprintf(buf1 + 2 * i, "%02x", fetch_data_byte_abs(s, o + i)); + } + printk("%-20s", buf1); +} + +static void print_decoded_instruction(void) +{ + printk("%s", M.x86.decoded_buf); +} + +void x86emu_print_int_vect(u16 iv) +{ + u16 seg, off; + + if (iv > 256) + return; + seg = fetch_data_word_abs(0, iv * 4); + off = fetch_data_word_abs(0, iv * 4 + 2); + printk("%04x:%04x ", seg, off); +} + +void X86EMU_dump_memory(u16 seg, u16 off, u32 amt) +{ + u32 start = off & 0xfffffff0; + u32 end = (off + 16) & 0xfffffff0; + u32 i; + u32 current; + + current = start; + while (end <= off + amt) { + printk("%04x:%04x ", seg, start); + for (i = start; i < off; i++) + printk(" "); + for (; i < end; i++) + printk("%02x ", fetch_data_byte_abs(seg, i)); + printk("\n"); + start = end; + end = start + 16; + } +} + +void x86emu_single_step(void) +{ + char s[1024]; + int ps[10]; + int ntok; + int cmd; + int done; + int segment; + int offset; + static int breakpoint; + static int noDecode = 1; + + char *p; + + if (DEBUG_BREAK()) { + if (M.x86.saved_ip != breakpoint) { + return; + } else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + M.x86.debug |= DEBUG_TRACE_F; + M.x86.debug &= ~DEBUG_BREAK_F; + print_decoded_instruction(); + X86EMU_trace_regs(); + } + } + done = 0; + offset = M.x86.saved_ip; + while (!done) { + printk("-"); + cmd = parse_line(s, ps, &ntok); + switch (cmd) { + case 'u': + disassemble_forward(M.x86.saved_cs, (u16) offset, 10); + break; + case 'd': + if (ntok == 2) { + segment = M.x86.saved_cs; + offset = ps[1]; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } else if (ntok == 3) { + segment = ps[1]; + offset = ps[2]; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } else { + segment = M.x86.saved_cs; + X86EMU_dump_memory(segment, (u16) offset, 16); + offset += 16; + } + break; + case 'c': + M.x86.debug ^= DEBUG_TRACECALL_F; + break; + case 's': + M.x86.debug ^= + DEBUG_SVC_F | DEBUG_SYS_F | DEBUG_SYSINT_F; + break; + case 'r': + X86EMU_trace_regs(); + break; + case 'x': + X86EMU_trace_xregs(); + break; + case 'g': + if (ntok == 2) { + breakpoint = ps[1]; + if (noDecode) { + M.x86.debug |= DEBUG_DECODE_NOPRINT_F; + } else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + } + M.x86.debug &= ~DEBUG_TRACE_F; + M.x86.debug |= DEBUG_BREAK_F; + done = 1; + } + break; + case 'q': + M.x86.debug |= DEBUG_EXIT; + return; + case 'P': + noDecode = (noDecode) ? 0 : 1; + printk("Toggled decoding to %s\n", + (noDecode) ? "FALSE" : "TRUE"); + break; + case 't': + case 0: + done = 1; + break; + } + } +} + +int X86EMU_trace_on(void) +{ + return M.x86.debug |= DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F; +} + +int X86EMU_trace_off(void) +{ + return M.x86.debug &= ~(DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F); +} + +static int parse_line(char *s, int *ps, int *n) +{ + int cmd; + + *n = 0; + while (*s == ' ' || *s == '\t') + s++; + ps[*n] = *s; + switch (*s) { + case '\n': + *n += 1; + return 0; + default: + cmd = *s; + *n += 1; + } + + while (1) { + while (*s != ' ' && *s != '\t' && *s != '\n') + s++; + + if (*s == '\n') + return cmd; + + while (*s == ' ' || *s == '\t') + s++; + + *n += 1; + } +} + +#endif /* DEBUG */ + +void x86emu_dump_regs(void) +{ + printk("\tAX=%04x ", M.x86.R_AX); + printk("BX=%04x ", M.x86.R_BX); + printk("CX=%04x ", M.x86.R_CX); + printk("DX=%04x ", M.x86.R_DX); + printk("SP=%04x ", M.x86.R_SP); + printk("BP=%04x ", M.x86.R_BP); + printk("SI=%04x ", M.x86.R_SI); + printk("DI=%04x\n", M.x86.R_DI); + printk("\tDS=%04x ", M.x86.R_DS); + printk("ES=%04x ", M.x86.R_ES); + printk("SS=%04x ", M.x86.R_SS); + printk("CS=%04x ", M.x86.R_CS); + printk("IP=%04x ", M.x86.R_IP); + if (ACCESS_FLAG(F_OF)) + printk("OV "); /* CHECKED... */ + else + printk("NV "); + if (ACCESS_FLAG(F_DF)) + printk("DN "); + else + printk("UP "); + if (ACCESS_FLAG(F_IF)) + printk("EI "); + else + printk("DI "); + if (ACCESS_FLAG(F_SF)) + printk("NG "); + else + printk("PL "); + if (ACCESS_FLAG(F_ZF)) + printk("ZR "); + else + printk("NZ "); + if (ACCESS_FLAG(F_AF)) + printk("AC "); + else + printk("NA "); + if (ACCESS_FLAG(F_PF)) + printk("PE "); + else + printk("PO "); + if (ACCESS_FLAG(F_CF)) + printk("CY "); + else + printk("NC "); + printk("\n"); +} + +void x86emu_dump_xregs(void) +{ + printk("\tEAX=%08x ", M.x86.R_EAX); + printk("EBX=%08x ", M.x86.R_EBX); + printk("ECX=%08x ", M.x86.R_ECX); + printk("EDX=%08x \n", M.x86.R_EDX); + printk("\tESP=%08x ", M.x86.R_ESP); + printk("EBP=%08x ", M.x86.R_EBP); + printk("ESI=%08x ", M.x86.R_ESI); + printk("EDI=%08x\n", M.x86.R_EDI); + printk("\tDS=%04x ", M.x86.R_DS); + printk("ES=%04x ", M.x86.R_ES); + printk("SS=%04x ", M.x86.R_SS); + printk("CS=%04x ", M.x86.R_CS); + printk("EIP=%08x\n\t", M.x86.R_EIP); + if (ACCESS_FLAG(F_OF)) + printk("OV "); /* CHECKED... */ + else + printk("NV "); + if (ACCESS_FLAG(F_DF)) + printk("DN "); + else + printk("UP "); + if (ACCESS_FLAG(F_IF)) + printk("EI "); + else + printk("DI "); + if (ACCESS_FLAG(F_SF)) + printk("NG "); + else + printk("PL "); + if (ACCESS_FLAG(F_ZF)) + printk("ZR "); + else + printk("NZ "); + if (ACCESS_FLAG(F_AF)) + printk("AC "); + else + printk("NA "); + if (ACCESS_FLAG(F_PF)) + printk("PE "); + else + printk("PO "); + if (ACCESS_FLAG(F_CF)) + printk("CY "); + else + printk("NC "); + printk("\n"); +} diff --git a/drivers/bios_emulator/x86emu/decode.c b/drivers/bios_emulator/x86emu/decode.c new file mode 100644 index 0000000..b4dbb20 --- /dev/null +++ b/drivers/bios_emulator/x86emu/decode.c @@ -0,0 +1,1148 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* instruction decoding and accessess of immediate data via IP. etc. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +REMARKS: +Handles any pending asychronous interrupts. +****************************************************************************/ +static void x86emu_intr_handle(void) +{ + u8 intno; + + if (M.x86.intr & INTR_SYNCH) { + intno = M.x86.intno; + if (_X86EMU_intrTab[intno]) { + (*_X86EMU_intrTab[intno])(intno); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intno * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intno * 4); + M.x86.intr = 0; + } + } +} + +/**************************************************************************** +PARAMETERS: +intrnum - Interrupt number to raise + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. +****************************************************************************/ +void x86emu_intr_raise( + u8 intrnum) +{ + M.x86.intno = intrnum; + M.x86.intr |= INTR_SYNCH; +} + +/**************************************************************************** +REMARKS: +Main execution loop for the emulator. We return from here when the system +halts, which is normally caused by a stack fault when we return from the +original real mode call. +****************************************************************************/ +void X86EMU_exec(void) +{ + u8 op1; + + M.x86.intr = 0; + DB(x86emu_end_instr();) + + for (;;) { +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + /* If debugging, save the IP and CS values. */ + SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP); + INC_DECODED_INST_LEN(1); + if (M.x86.intr) { + if (M.x86.intr & INTR_HALTED) { +DB( if (M.x86.R_SP != 0) { + printk("halted\n"); + X86EMU_trace_regs(); + } + else { + if (M.x86.debug) + printk("Service completed successfully\n"); + }) + return; + } + if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) || + !ACCESS_FLAG(F_IF)) { + x86emu_intr_handle(); + } + } + op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + (*x86emu_optab[op1])(op1); + if (M.x86.debug & DEBUG_EXIT) { + M.x86.debug &= ~DEBUG_EXIT; + return; + } + } +} + +/**************************************************************************** +REMARKS: +Halts the system by setting the halted system flag. +****************************************************************************/ +void X86EMU_halt_sys(void) +{ + M.x86.intr |= INTR_HALTED; +} + +/**************************************************************************** +PARAMETERS: +mod - Mod value from decoded byte +regh - Reg h value from decoded byte +regl - Reg l value from decoded byte + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +void fetch_decode_modrm( + int *mod, + int *regh, + int *regl) +{ + int fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + *mod = (fetched >> 6) & 0x03; + *regh = (fetched >> 3) & 0x07; + *regl = (fetched >> 0) & 0x07; +} + +/**************************************************************************** +RETURNS: +Immediate byte value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +u8 fetch_byte_imm(void) +{ + u8 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate word value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u16 fetch_word_imm(void) +{ + u16 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdw)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 2; + INC_DECODED_INST_LEN(2); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate lone value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u32 fetch_long_imm(void) +{ + u32 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdl)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 4; + INC_DECODED_INST_LEN(4); + return fetched; +} + +/**************************************************************************** +RETURNS: +Value of the default data segment + +REMARKS: +Inline function that returns the default data segment for the current +instruction. + +On the x86 processor, the default segment is not always DS if there is +no segment override. Address modes such as -3[BP] or 10[BP+SI] all refer to +addresses relative to SS (ie: on the stack). So, at the minimum, all +decodings of addressing modes would have to set/clear a bit describing +whether the access is relative to DS or SS. That is the function of the +cpu-state-varible M.x86.mode. There are several potential states: + + repe prefix seen (handled elsewhere) + repne prefix seen (ditto) + + cs segment override + ds segment override + es segment override + fs segment override + gs segment override + ss segment override + + ds/ss select (in absense of override) + +Each of the above 7 items are handled with a bit in the mode field. +****************************************************************************/ +_INLINE u32 get_data_segment(void) +{ +#define GET_SEGMENT(segment) + switch (M.x86.mode & SYSMODE_SEGMASK) { + case 0: /* default case: use ds register */ + case SYSMODE_SEGOVR_DS: + case SYSMODE_SEGOVR_DS | SYSMODE_SEG_DS_SS: + return M.x86.R_DS; + case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */ + return M.x86.R_SS; + case SYSMODE_SEGOVR_CS: + case SYSMODE_SEGOVR_CS | SYSMODE_SEG_DS_SS: + return M.x86.R_CS; + case SYSMODE_SEGOVR_ES: + case SYSMODE_SEGOVR_ES | SYSMODE_SEG_DS_SS: + return M.x86.R_ES; + case SYSMODE_SEGOVR_FS: + case SYSMODE_SEGOVR_FS | SYSMODE_SEG_DS_SS: + return M.x86.R_FS; + case SYSMODE_SEGOVR_GS: + case SYSMODE_SEGOVR_GS | SYSMODE_SEG_DS_SS: + return M.x86.R_GS; + case SYSMODE_SEGOVR_SS: + case SYSMODE_SEGOVR_SS | SYSMODE_SEG_DS_SS: + return M.x86.R_SS; + default: +#ifdef DEBUG + printk("error: should not happen: multiple overrides.\n"); +#endif + HALT_SYS(); + return 0; + } +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 fetch_data_byte( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdb)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 fetch_data_word( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdw)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 fetch_data_long( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdl)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 fetch_data_byte_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdb)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 fetch_data_word_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdw)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 fetch_data_long_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdl)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_byte( + uint offset, + u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrb)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_word( + uint offset, + u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrw)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_long( + uint offset, + u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrl)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a byte value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_byte_abs( + uint segment, + uint offset, + u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrb)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_word_abs( + uint segment, + uint offset, + u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrw)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_long_abs( + uint segment, + uint offset, + u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrl)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for byte operands. Also enables the decoding of instructions. +****************************************************************************/ +u8* decode_rm_byte_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AL"); + return &M.x86.R_AL; + case 1: + DECODE_PRINTF("CL"); + return &M.x86.R_CL; + case 2: + DECODE_PRINTF("DL"); + return &M.x86.R_DL; + case 3: + DECODE_PRINTF("BL"); + return &M.x86.R_BL; + case 4: + DECODE_PRINTF("AH"); + return &M.x86.R_AH; + case 5: + DECODE_PRINTF("CH"); + return &M.x86.R_CH; + case 6: + DECODE_PRINTF("DH"); + return &M.x86.R_DH; + case 7: + DECODE_PRINTF("BH"); + return &M.x86.R_BH; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands. Also enables the decoding of instructions. +****************************************************************************/ +u16* decode_rm_word_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AX"); + return &M.x86.R_AX; + case 1: + DECODE_PRINTF("CX"); + return &M.x86.R_CX; + case 2: + DECODE_PRINTF("DX"); + return &M.x86.R_DX; + case 3: + DECODE_PRINTF("BX"); + return &M.x86.R_BX; + case 4: + DECODE_PRINTF("SP"); + return &M.x86.R_SP; + case 5: + DECODE_PRINTF("BP"); + return &M.x86.R_BP; + case 6: + DECODE_PRINTF("SI"); + return &M.x86.R_SI; + case 7: + DECODE_PRINTF("DI"); + return &M.x86.R_DI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for dword operands. Also enables the decoding of instructions. +****************************************************************************/ +u32* decode_rm_long_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("EAX"); + return &M.x86.R_EAX; + case 1: + DECODE_PRINTF("ECX"); + return &M.x86.R_ECX; + case 2: + DECODE_PRINTF("EDX"); + return &M.x86.R_EDX; + case 3: + DECODE_PRINTF("EBX"); + return &M.x86.R_EBX; + case 4: + DECODE_PRINTF("ESP"); + return &M.x86.R_ESP; + case 5: + DECODE_PRINTF("EBP"); + return &M.x86.R_EBP; + case 6: + DECODE_PRINTF("ESI"); + return &M.x86.R_ESI; + case 7: + DECODE_PRINTF("EDI"); + return &M.x86.R_EDI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands, modified from above for the weirdo +special case of segreg operands. Also enables the decoding of instructions. +****************************************************************************/ +u16* decode_rm_seg_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("ES"); + return &M.x86.R_ES; + case 1: + DECODE_PRINTF("CS"); + return &M.x86.R_CS; + case 2: + DECODE_PRINTF("SS"); + return &M.x86.R_SS; + case 3: + DECODE_PRINTF("DS"); + return &M.x86.R_DS; + case 4: + DECODE_PRINTF("FS"); + return &M.x86.R_FS; + case 5: + DECODE_PRINTF("GS"); + return &M.x86.R_GS; + case 6: + case 7: + DECODE_PRINTF("ILLEGAL SEGREG"); + break; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +scale - scale value of SIB byte +index - index value of SIB byte + +RETURNS: +Value of scale * index + +REMARKS: +Decodes scale/index of SIB byte and returns relevant offset part of +effective address. +****************************************************************************/ +unsigned decode_sib_si( + int scale, + int index) +{ + scale = 1 << scale; + if (scale > 1) { + DECODE_PRINTF2("[%d*", scale); + } else { + DECODE_PRINTF("["); + } + switch (index) { + case 0: + DECODE_PRINTF("EAX]"); + return M.x86.R_EAX * index; + case 1: + DECODE_PRINTF("ECX]"); + return M.x86.R_ECX * index; + case 2: + DECODE_PRINTF("EDX]"); + return M.x86.R_EDX * index; + case 3: + DECODE_PRINTF("EBX]"); + return M.x86.R_EBX * index; + case 4: + DECODE_PRINTF("0]"); + return 0; + case 5: + DECODE_PRINTF("EBP]"); + return M.x86.R_EBP * index; + case 6: + DECODE_PRINTF("ESI]"); + return M.x86.R_ESI * index; + case 7: + DECODE_PRINTF("EDI]"); + return M.x86.R_EDI * index; + } + HALT_SYS(); + return 0; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +mod - MOD value of preceding ModR/M byte + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Decodes SIB addressing byte and returns calculated effective address. +****************************************************************************/ +unsigned decode_sib_address( + int mod) +{ + int sib = fetch_byte_imm(); + int ss = (sib >> 6) & 0x03; + int index = (sib >> 3) & 0x07; + int base = sib & 0x07; + int offset = 0; + int displacement; + + switch (base) { + case 0: + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; + case 1: + DECODE_PRINTF("[ECX]"); + offset = M.x86.R_ECX; + break; + case 2: + DECODE_PRINTF("[EDX]"); + offset = M.x86.R_EDX; + break; + case 3: + DECODE_PRINTF("[EBX]"); + offset = M.x86.R_EBX; + break; + case 4: + DECODE_PRINTF("[ESP]"); + offset = M.x86.R_ESP; + break; + case 5: + switch (mod) { + case 0: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + offset = displacement; + break; + case 1: + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + case 2: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + default: + HALT_SYS(); + } + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; + case 6: + DECODE_PRINTF("[ESI]"); + offset = M.x86.R_ESI; + break; + case 7: + DECODE_PRINTF("[EDI]"); + offset = M.x86.R_EDI; + break; + default: + HALT_SYS(); + } + offset += decode_sib_si(ss, index); + return offset; + +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=00 addressing. Also enables the +decoding of instructions. + +NOTE: The code which specifies the corresponding segment (ds vs ss) + below in the case of [BP+..]. The assumption here is that at the + point that this subroutine is called, the bit corresponding to + SYSMODE_SEG_DS_SS will be zero. After every instruction + except the segment override instructions, this bit (as well + as any bits indicating segment overrides) will be clear. So + if a SS access is needed, set this bit. Otherwise, DS access + occurs (unless any of the segment override bits are set). +****************************************************************************/ +unsigned decode_rm00_address( + int rm) +{ + unsigned offset; + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[EAX]"); + return M.x86.R_EAX; + case 1: + DECODE_PRINTF("[ECX]"); + return M.x86.R_ECX; + case 2: + DECODE_PRINTF("[EDX]"); + return M.x86.R_EDX; + case 3: + DECODE_PRINTF("[EBX]"); + return M.x86.R_EBX; + case 4: + return decode_sib_address(0); + case 5: + offset = fetch_long_imm(); + DECODE_PRINTF2("[%08x]", offset); + return offset; + case 6: + DECODE_PRINTF("[ESI]"); + return M.x86.R_ESI; + case 7: + DECODE_PRINTF("[EDI]"); + return M.x86.R_EDI; + } + } else { + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[BX+SI]"); + return (M.x86.R_BX + M.x86.R_SI) & 0xffff; + case 1: + DECODE_PRINTF("[BX+DI]"); + return (M.x86.R_BX + M.x86.R_DI) & 0xffff; + case 2: + DECODE_PRINTF("[BP+SI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI) & 0xffff; + case 3: + DECODE_PRINTF("[BP+DI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI) & 0xffff; + case 4: + DECODE_PRINTF("[SI]"); + return M.x86.R_SI; + case 5: + DECODE_PRINTF("[DI]"); + return M.x86.R_DI; + case 6: + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]", offset); + return offset; + case 7: + DECODE_PRINTF("[BX]"); + return M.x86.R_BX; + } + } + HALT_SYS(); + return 0; +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=01 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +unsigned decode_rm01_address( + int rm) +{ + int displacement; + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + if (rm != 4) + displacement = (s8)fetch_byte_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(1); + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + } else { + /* 16-bit addressing */ + displacement = (s8)fetch_byte_imm(); + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + } + HALT_SYS(); + return 0; /* SHOULD NOT HAPPEN */ +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=10 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +unsigned decode_rm10_address( + int rm) +{ + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + int displacement; + + /* 32-bit addressing */ + if (rm != 4) + displacement = (s32)fetch_long_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(2); + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + } else { + int displacement = (s16)fetch_word_imm(); + + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + } + HALT_SYS(); + return 0; /* SHOULD NOT HAPPEN */ +} + + +/**************************************************************************** +PARAMETERS: +mod - modifier +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding, multiplexing calls to +the decode_rmXX_address functions + +REMARKS: +Return the offset given by "mod" addressing. +****************************************************************************/ + +unsigned decode_rmXX_address(int mod, int rm) +{ + if(mod == 0) + return decode_rm00_address(rm); + if(mod == 1) + return decode_rm01_address(rm); + return decode_rm10_address(rm); +} + + + diff --git a/drivers/bios_emulator/x86emu/ops.c b/drivers/bios_emulator/x86emu/ops.c new file mode 100644 index 0000000..632979d --- /dev/null +++ b/drivers/bios_emulator/x86emu/ops.c @@ -0,0 +1,5431 @@ +/**************************************************************************** +* Realmode X86 Emulator Library +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 processor instructions. +* +* There are approximately 250 subroutines in here, which correspond +* to the 256 byte-"opcodes" found on the 8086. The table which +* dispatches this is found in the files optab.[ch]. +* +* Each opcode proc has a comment preceeding it which gives it's table +* address. Several opcodes are missing (undefined) in the table. +* +* Each proc includes information for decoding (DECODE_PRINTF and +* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc +* functions (START_OF_INSTR, END_OF_INSTR). +* +* Many of the procedures are *VERY* similar in coding. This has +* allowed for a very large amount of code to be generated in a fairly +* short amount of time (i.e. cut, paste, and modify). The result is +* that much of the code below could have been folded into subroutines +* for a large reduction in size of this file. The downside would be +* that there would be a penalty in execution speed. The file could +* also have been *MUCH* larger by inlining certain functions which +* were called. This could have resulted even faster execution. The +* prime directive I used to decide whether to inline the code or to +* modularize it, was basically: 1) no unnecessary subroutine calls, +* 2) no routines more than about 200 lines in size, and 3) modularize +* any code that I might not get right the first time. The fetch_* +* subroutines fall into the latter category. The The decode_* fall +* into the second category. The coding of the "switch(mod){ .... }" +* in many of the subroutines below falls into the first category. +* Especially, the coding of {add,and,or,sub,...}_{byte,word} +* subroutines are an especially glaring case of the third guideline. +* Since so much of the code is cloned from other modules (compare +* opcode #00 to opcode #01), making the basic operations subroutine +* calls is especially important; otherwise mistakes in coding an +* "add" would represent a nightmare in maintenance. +* +* Jason ported this file to u-boot. place all the function pointer in +* the got2 sector. Removed some opcode. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" +/*----------------------------- Implementation ----------------------------*/ + +/* constant arrays to do several instructions in just one function */ + +#ifdef DEBUG +static char *x86emu_GenOpName[8] = { + "ADD", "OR", "ADC", "SBB", "AND", "SUB", "XOR", "CMP"}; +#endif + +/* used by several opcodes */ +static u8 (*genop_byte_operation[])(u8 d, u8 s) __attribute__ ((section(".got2"))) = +{ + add_byte, /* 00 */ + or_byte, /* 01 */ + adc_byte, /* 02 */ + sbb_byte, /* 03 */ + and_byte, /* 04 */ + sub_byte, /* 05 */ + xor_byte, /* 06 */ + cmp_byte, /* 07 */ +}; + +static u16 (*genop_word_operation[])(u16 d, u16 s) __attribute__ ((section(".got2"))) = +{ + add_word, /*00 */ + or_word, /*01 */ + adc_word, /*02 */ + sbb_word, /*03 */ + and_word, /*04 */ + sub_word, /*05 */ + xor_word, /*06 */ + cmp_word, /*07 */ +}; + +static u32 (*genop_long_operation[])(u32 d, u32 s) __attribute__ ((section(".got2"))) = +{ + add_long, /*00 */ + or_long, /*01 */ + adc_long, /*02 */ + sbb_long, /*03 */ + and_long, /*04 */ + sub_long, /*05 */ + xor_long, /*06 */ + cmp_long, /*07 */ +}; + +/* used by opcodes 80, c0, d0, and d2. */ +static u8(*opcD0_byte_operation[])(u8 d, u8 s) __attribute__ ((section(".got2"))) = +{ + rol_byte, + ror_byte, + rcl_byte, + rcr_byte, + shl_byte, + shr_byte, + shl_byte, /* sal_byte === shl_byte by definition */ + sar_byte, +}; + +/* used by opcodes c1, d1, and d3. */ +static u16(*opcD1_word_operation[])(u16 s, u8 d) __attribute__ ((section(".got2"))) = +{ + rol_word, + ror_word, + rcl_word, + rcr_word, + shl_word, + shr_word, + shl_word, /* sal_byte === shl_byte by definition */ + sar_word, +}; + +/* used by opcodes c1, d1, and d3. */ +static u32 (*opcD1_long_operation[])(u32 s, u8 d) __attribute__ ((section(".got2"))) = +{ + rol_long, + ror_long, + rcl_long, + rcr_long, + shl_long, + shr_long, + shl_long, /* sal_byte === shl_byte by definition */ + sar_long, +}; + +#ifdef DEBUG + +static char *opF6_names[8] = + { "TEST\t", "", "NOT\t", "NEG\t", "MUL\t", "IMUL\t", "DIV\t", "IDIV\t" }; + +#endif + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +void x86emuOp_illegal_op( + u8 op1) +{ + START_OF_INSTR(); + if (M.x86.R_SP != 0) { + DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); + TRACE_REGS(); + DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-1,op1)); + HALT_SYS(); + } + else { + /* If we get here, it means the stack pointer is back to zero + * so we are just returning from an emulator service call + * so therte is no need to display an error message. We trap + * the emulator with an 0xF1 opcode to finish the service + * call. + */ + X86EMU_halt_sys(); + } + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38 +****************************************************************************/ +void x86emuOp_genop_byte_RM_R(u8 op1) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg, *srcreg; + u8 destval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if(mod<3) + { destoffset = decode_rmXX_address(mod,rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_byte_operation[op1](destval, *srcreg); + store_data_byte(destoffset, destval); + } + else + { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_byte_operation[op1](*destreg, *srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x01, 0x09, 0x11, 0x19, 0x21, 0x29, 0x31, 0x39 +****************************************************************************/ +void x86emuOp_genop_word_RM_R(u8 op1) +{ + int mod, rl, rh; + uint destoffset; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + + if(mod<3) { + destoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_long_operation[op1](destval, *srcreg); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_word_operation[op1](destval, *srcreg); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_long_operation[op1](*destreg, *srcreg); + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x02, 0x0a, 0x12, 0x1a, 0x22, 0x2a, 0x32, 0x3a +****************************************************************************/ +void x86emuOp_genop_byte_R_RM(u8 op1) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod,rl); + srcval = fetch_data_byte(srcoffset); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + srcval = *srcreg; + } + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_byte_operation[op1](*destreg, srcval); + + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x03, 0x0b, 0x13, 0x1b, 0x23, 0x2b, 0x33, 0x3b +****************************************************************************/ +void x86emuOp_genop_word_R_RM(u8 op1) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg32, srcval; + u16 *destreg; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, srcval); + } else { + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, srcval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, *srcreg); + } else { + u16 *srcreg; + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x04, 0x0c, 0x14, 0x1c, 0x24, 0x2c, 0x34, 0x3c +****************************************************************************/ +void x86emuOp_genop_byte_AL_IMM(u8 op1) +{ + u8 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = genop_byte_operation[op1](M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x05, 0x0d, 0x15, 0x1d, 0x25, 0x2d, 0x35, 0x3d +****************************************************************************/ +void x86emuOp_genop_word_AX_IMM(u8 op1) +{ + u32 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tEAX,"); + srcval = fetch_long_imm(); + } else { + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = genop_long_operation[op1](M.x86.R_EAX, srcval); + } else { + M.x86.R_AX = genop_word_operation[op1](M.x86.R_AX, (u16)srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x06 +****************************************************************************/ +void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tES\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_ES); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x07 +****************************************************************************/ +void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tES\n"); + TRACE_AND_STEP(); + M.x86.R_ES = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0e +****************************************************************************/ +void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tCS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f. Escape for two-byte opcode (286 or better) +****************************************************************************/ +void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + (*x86emu_optab2[op2])(op2); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x16 +****************************************************************************/ +void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tSS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_SS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x17 +****************************************************************************/ +void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tSS\n"); + TRACE_AND_STEP(); + M.x86.R_SS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1e +****************************************************************************/ +void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tDS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_DS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1f +****************************************************************************/ +void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tDS\n"); + TRACE_AND_STEP(); + M.x86.R_DS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x26 +****************************************************************************/ +void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ES:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_ES; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x27 +****************************************************************************/ +void x86emuOp_daa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAA\n"); + TRACE_AND_STEP(); + M.x86.R_AL = daa_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2e +****************************************************************************/ +void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("CS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_CS; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2f +****************************************************************************/ +void x86emuOp_das(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAS\n"); + TRACE_AND_STEP(); + M.x86.R_AL = das_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x36 +****************************************************************************/ +void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_SS; + /* no DECODE_CLEAR_SEGOVR ! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x37 +****************************************************************************/ +void x86emuOp_aaa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAA\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aaa_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3e +****************************************************************************/ +void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_DS; + /* NO DECODE_CLEAR_SEGOVR! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3f +****************************************************************************/ +void x86emuOp_aas(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAS\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aas_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x40 - 0x47 +****************************************************************************/ +void x86emuOp_inc_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("INC\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x48 - 0x4F +****************************************************************************/ +void x86emuOp_dec_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("DEC\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x50 - 0x57 +****************************************************************************/ +void x86emuOp_push_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("PUSH\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x58 - 0x5F +****************************************************************************/ +void x86emuOp_pop_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("POP\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_long(); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x60 +****************************************************************************/ +void x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHAD\n"); + } else { + DECODE_PRINTF("PUSHA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 old_sp = M.x86.R_ESP; + + push_long(M.x86.R_EAX); + push_long(M.x86.R_ECX); + push_long(M.x86.R_EDX); + push_long(M.x86.R_EBX); + push_long(old_sp); + push_long(M.x86.R_EBP); + push_long(M.x86.R_ESI); + push_long(M.x86.R_EDI); + } else { + u16 old_sp = M.x86.R_SP; + + push_word(M.x86.R_AX); + push_word(M.x86.R_CX); + push_word(M.x86.R_DX); + push_word(M.x86.R_BX); + push_word(old_sp); + push_word(M.x86.R_BP); + push_word(M.x86.R_SI); + push_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x61 +****************************************************************************/ +void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPAD\n"); + } else { + DECODE_PRINTF("POPA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = pop_long(); + M.x86.R_ESI = pop_long(); + M.x86.R_EBP = pop_long(); + M.x86.R_ESP += 4; /* skip ESP */ + M.x86.R_EBX = pop_long(); + M.x86.R_EDX = pop_long(); + M.x86.R_ECX = pop_long(); + M.x86.R_EAX = pop_long(); + } else { + M.x86.R_DI = pop_word(); + M.x86.R_SI = pop_word(); + M.x86.R_BP = pop_word(); + M.x86.R_SP += 2; /* skip SP */ + M.x86.R_BX = pop_word(); + M.x86.R_DX = pop_word(); + M.x86.R_CX = pop_word(); + M.x86.R_AX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ +/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ + +/**************************************************************************** +REMARKS: +Handles opcode 0x64 +****************************************************************************/ +void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("FS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_FS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x65 +****************************************************************************/ +void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("GS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_GS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x66 - prefix for 32-bit register +****************************************************************************/ +void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DATA:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_DATA; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x67 - prefix for 32-bit address +****************************************************************************/ +void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ADDR:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_ADDR; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x68 +****************************************************************************/ +void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 imm; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + imm = fetch_long_imm(); + } else { + imm = fetch_word_imm(); + } + DECODE_PRINTF2("PUSH\t%x\n", imm); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(imm); + } else { + push_word((u16)imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x69 +****************************************************************************/ +void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6a +****************************************************************************/ +void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 imm; + + START_OF_INSTR(); + imm = (s8)fetch_byte_imm(); + DECODE_PRINTF2("PUSH\t%d\n", imm); + TRACE_AND_STEP(); + push_word(imm); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6b +****************************************************************************/ +void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + s8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6c +****************************************************************************/ +void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("INSB\n"); + ins(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6d +****************************************************************************/ +void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INSD\n"); + ins(4); + } else { + DECODE_PRINTF("INSW\n"); + ins(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6e +****************************************************************************/ +void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUTSB\n"); + outs(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6f +****************************************************************************/ +void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUTSD\n"); + outs(4); + } else { + DECODE_PRINTF("OUTSW\n"); + outs(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x70 - 0x7F +****************************************************************************/ +int x86emu_check_jump_condition(u8 op); + +void x86emuOp_jump_near_cond(u8 op1) +{ + s8 offset; + u16 target; + int cond; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + cond = x86emu_check_jump_condition(op1 & 0xF); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + (s16)offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (cond) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x80 +****************************************************************************/ +void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x81 +****************************************************************************/ +void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* + * Know operation, decode the mod byte to find the addressing + * mode. + */ + if (mod < 3) { + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval,imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } else { + u16 *destreg; + u16 destval,imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x82 +****************************************************************************/ +void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x83 +****************************************************************************/ +void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod,rl); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval,imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } else { + u16 *destreg; + u16 destval,imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x84 +****************************************************************************/ +void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(*destreg, *srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x85 +****************************************************************************/ +void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(*destreg, *srcreg); + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x86 +****************************************************************************/ +void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + u8 tmp; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x87 +****************************************************************************/ +void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval,tmp; + + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } else { + u16 *srcreg; + u16 destval,tmp; + + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 tmp; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } else { + u16 *destreg,*srcreg; + u16 tmp; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x88 +****************************************************************************/ +void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x89 +****************************************************************************/ +void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } else { + u16 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8a +****************************************************************************/ +void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8b +****************************************************************************/ +void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8c +****************************************************************************/ +void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint destoffset; + u16 destval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8d +****************************************************************************/ +void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *srcreg; + uint destoffset; + +/* + * TODO: Need to handle address size prefix! + * + * lea eax,[eax+ebx*2] ?? + */ + + START_OF_INSTR(); + DECODE_PRINTF("LEA\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16)destoffset; + } + /* } else { undefined. Do nothing. } */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8e +****************************************************************************/ +void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint srcoffset; + u16 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + /* + * Clean up, and reset all the R_xSP pointers to the correct + * locations. This is about 3x too much overhead (doing all the + * segreg ptrs when only one is needed, but this instruction + * *cannot* be that common, and this isn't too much work anyway. + */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8f +****************************************************************************/ +void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("POP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_long(); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_word(); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x90 +****************************************************************************/ +void x86emuOp_nop(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("NOP\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x91-0x97 +****************************************************************************/ +void x86emuOp_xchg_word_AX_register(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + op1 &= 0x7; + + START_OF_INSTR(); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg32; + DECODE_PRINTF("XCHG\tEAX,"); + reg32 = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_EAX; + M.x86.R_EAX = *reg32; + *reg32 = tmp; + } else { + u16 *reg16; + DECODE_PRINTF("XCHG\tAX,"); + reg16 = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_AX; + M.x86.R_EAX = *reg16; + *reg16 = (u16)tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x98 +****************************************************************************/ +void x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CWDE\n"); + } else { + DECODE_PRINTF("CBW\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_AX & 0x8000) { + M.x86.R_EAX |= 0xffff0000; + } else { + M.x86.R_EAX &= 0x0000ffff; + } + } else { + if (M.x86.R_AL & 0x80) { + M.x86.R_AH = 0xff; + } else { + M.x86.R_AH = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x99 +****************************************************************************/ +void x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CDQ\n"); + } else { + DECODE_PRINTF("CWD\n"); + } + DECODE_PRINTF("CWD\n"); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_EAX & 0x80000000) { + M.x86.R_EDX = 0xffffffff; + } else { + M.x86.R_EDX = 0x0; + } + } else { + if (M.x86.R_AX & 0x8000) { + M.x86.R_DX = 0xffff; + } else { + M.x86.R_DX = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9a +****************************************************************************/ +void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 farseg, faroff; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + faroff = fetch_word_imm(); + farseg = fetch_word_imm(); + DECODE_PRINTF2("%04x:", farseg); + DECODE_PRINTF2("%04x\n", faroff); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR "); + + /* XXX + * + * Hooked interrupt vectors calling into our "BIOS" will cause + * problems unless all intersegment stuff is checked for BIOS + * access. Check needed here. For moment, let it alone. + */ + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = farseg; + push_word(M.x86.R_IP); + M.x86.R_IP = faroff; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9b +****************************************************************************/ +void x86emuOp_wait(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("WAIT"); + TRACE_AND_STEP(); + /* NADA. */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9c +****************************************************************************/ +void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) +{ + u32 flags; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHFD\n"); + } else { + DECODE_PRINTF("PUSHF\n"); + } + TRACE_AND_STEP(); + + /* clear out *all* bits not representing flags, and turn on real bits */ + flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(flags); + } else { + push_word((u16)flags); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9d +****************************************************************************/ +void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPFD\n"); + } else { + DECODE_PRINTF("POPF\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EFLG = pop_long(); + } else { + M.x86.R_FLG = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9e +****************************************************************************/ +void x86emuOp_sahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SAHF\n"); + TRACE_AND_STEP(); + /* clear the lower bits of the flag register */ + M.x86.R_FLG &= 0xffffff00; + /* or in the AH register into the flags register */ + M.x86.R_FLG |= M.x86.R_AH; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9f +****************************************************************************/ +void x86emuOp_lahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LAHF\n"); + TRACE_AND_STEP(); + M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff); + /*undocumented TC++ behavior??? Nope. It's documented, but + you have too look real hard to notice it. */ + M.x86.R_AH |= 0x2; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa0 +****************************************************************************/ +void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tAL,"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]\n", offset); + TRACE_AND_STEP(); + M.x86.R_AL = fetch_data_byte(offset); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa1 +****************************************************************************/ +void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); + } else { + DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(offset); + } else { + M.x86.R_AX = fetch_data_word(offset); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa2 +****************************************************************************/ +void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x],AL\n", offset); + TRACE_AND_STEP(); + store_data_byte(offset, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa3 +****************************************************************************/ +void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); + } else { + DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long(offset, M.x86.R_EAX); + } else { + store_data_word(offset, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa4 +****************************************************************************/ +void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 val; + u32 count; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("MOVS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + val = fetch_data_byte(M.x86.R_SI); + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa5 +****************************************************************************/ +void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val; + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOVS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("MOVS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long(M.x86.R_SI); + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); + } else { + val = fetch_data_word(M.x86.R_SI); + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa6 +****************************************************************************/ +void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val1, val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("CMPS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && (ACCESS_FLAG(F_ZF) == 0) ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa7 +****************************************************************************/ +void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val1,val2; + int inc; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CMPS\tDWORD\n"); + inc = 4; + } else { + DECODE_PRINTF("CMPS\tWORD\n"); + inc = 2; + } + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -inc; + + TRACE_AND_STEP(); + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && ACCESS_FLAG(F_ZF) == 0 ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa8 +****************************************************************************/ +void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + int imm; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\tAL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%04x\n", imm); + TRACE_AND_STEP(); + test_byte(M.x86.R_AL, (u8)imm); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa9 +****************************************************************************/ +void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("TEST\tEAX,"); + srcval = fetch_long_imm(); + } else { + DECODE_PRINTF("TEST\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + test_long(M.x86.R_EAX, srcval); + } else { + test_word(M.x86.R_AX, (u16)srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaa +****************************************************************************/ +void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("STOS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xab +****************************************************************************/ +void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("STOS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("STOS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); + } else { + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); + } + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xac +****************************************************************************/ +void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("LODS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_SI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xad +****************************************************************************/ +void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("LODS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("LODS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(M.x86.R_SI); + } else { + M.x86.R_AX = fetch_data_word(M.x86.R_SI); + } + M.x86.R_SI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xae +****************************************************************************/ +void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("SCAS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } else { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaf +****************************************************************************/ +void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 val; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("SCAS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("SCAS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb0 - 0xb7 +****************************************************************************/ +void x86emuOp_mov_byte_register_IMM(u8 op1) +{ + u8 imm, *ptr; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + ptr = DECODE_RM_BYTE_REGISTER(op1 & 0x7); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + *ptr = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb8 - 0xbf +****************************************************************************/ +void x86emuOp_mov_word_register_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + op1 &= 0x7; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg32; + reg32 = DECODE_RM_LONG_REGISTER(op1); + srcval = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg32 = srcval; + } else { + u16 *reg16; + reg16 = DECODE_RM_WORD_REGISTER(op1); + srcval = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg16 = (u16)srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc0 +****************************************************************************/ +void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc1 +****************************************************************************/ +void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc2 +****************************************************************************/ +void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RET\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc3 +****************************************************************************/ +void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RET\n"); + RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc4 +****************************************************************************/ +void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LES\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); + } + /* else UNDEFINED! register to register */ + + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc5 +****************************************************************************/ +void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LDS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); + } + /* else UNDEFINED! */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc6 +****************************************************************************/ +void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); + HALT_SYS(); + } + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc7 +****************************************************************************/ +void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } else { + u16 *destreg; + u16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc8 +****************************************************************************/ +void x86emuOp_enter(u8 X86EMU_UNUSED(op1)) +{ + u16 local,frame_pointer; + u8 nesting; + int i; + + START_OF_INSTR(); + local = fetch_word_imm(); + nesting = fetch_byte_imm(); + DECODE_PRINTF2("ENTER %x\n", local); + DECODE_PRINTF2(",%x\n", nesting); + TRACE_AND_STEP(); + push_word(M.x86.R_BP); + frame_pointer = M.x86.R_SP; + if (nesting > 0) { + for (i = 1; i < nesting; i++) { + M.x86.R_BP -= 2; + push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); + } + push_word(frame_pointer); + } + M.x86.R_BP = frame_pointer; + M.x86.R_SP = (u16)(M.x86.R_SP - local); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc9 +****************************************************************************/ +void x86emuOp_leave(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LEAVE\n"); + TRACE_AND_STEP(); + M.x86.R_SP = M.x86.R_BP; + M.x86.R_BP = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xca +****************************************************************************/ +void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RETF\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcb +****************************************************************************/ +void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RETF\n"); + RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcc +****************************************************************************/ +void x86emuOp_int3(u8 X86EMU_UNUSED(op1)) +{ + u16 tmp; + + START_OF_INSTR(); + DECODE_PRINTF("INT 3\n"); + tmp = (u16) mem_access_word(3 * 4 + 2); + /* access the segment register */ + TRACE_AND_STEP(); + if (_X86EMU_intrTab[3]) { + (*_X86EMU_intrTab[3])(3); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(3 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(3 * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcd +****************************************************************************/ +void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 tmp; + u8 intnum; + + START_OF_INSTR(); + DECODE_PRINTF("INT\t"); + intnum = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", intnum); + tmp = mem_access_word(intnum * 4 + 2); + TRACE_AND_STEP(); + if (_X86EMU_intrTab[intnum]) { + (*_X86EMU_intrTab[intnum])(intnum); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intnum * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intnum * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xce +****************************************************************************/ +void x86emuOp_into(u8 X86EMU_UNUSED(op1)) +{ + u16 tmp; + + START_OF_INSTR(); + DECODE_PRINTF("INTO\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_OF)) { + tmp = mem_access_word(4 * 4 + 2); + if (_X86EMU_intrTab[4]) { + (*_X86EMU_intrTab[4])(4); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(4 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(4 * 4); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcf +****************************************************************************/ +void x86emuOp_iret(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IRET\n"); + + TRACE_AND_STEP(); + + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + M.x86.R_FLG = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd0 +****************************************************************************/ +void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, 1); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd1 +****************************************************************************/ +void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (*destreg, 1); + *destreg = destval; + } else { + u16 destval; + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (*destreg, 1); + *destreg = destval; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd2 +****************************************************************************/ +void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd3 +****************************************************************************/ +void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd4 +****************************************************************************/ +void x86emuOp_aam(u8 X86EMU_UNUSED(op1)) +{ + u8 a; + + START_OF_INSTR(); + DECODE_PRINTF("AAM\n"); + a = fetch_byte_imm(); /* this is a stupid encoding. */ + if (a != 10) { + DECODE_PRINTF("ERROR DECODING AAM\n"); + TRACE_REGS(); + HALT_SYS(); + } + TRACE_AND_STEP(); + /* note the type change here --- returning AL and AH in AX. */ + M.x86.R_AX = aam_word(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd5 +****************************************************************************/ +void x86emuOp_aad(u8 X86EMU_UNUSED(op1)) +{ + u8 a; + + START_OF_INSTR(); + DECODE_PRINTF("AAD\n"); + a = fetch_byte_imm(); + TRACE_AND_STEP(); + M.x86.R_AX = aad_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* opcode 0xd6 ILLEGAL OPCODE */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xd7 +****************************************************************************/ +void x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) +{ + u16 addr; + + START_OF_INSTR(); + DECODE_PRINTF("XLAT\n"); + TRACE_AND_STEP(); + addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL); + M.x86.R_AL = fetch_data_byte(addr); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* instuctions D8 .. DF are in i87_ops.c */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xe0 +****************************************************************************/ +void x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPNE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe1 +****************************************************************************/ +void x86emuOp_loope(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe2 +****************************************************************************/ +void x86emuOp_loop(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOP\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_CX -= 1; + if (M.x86.R_CX != 0) + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe3 +****************************************************************************/ +void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JCXZ\t"); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (M.x86.R_CX == 0) + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe4 +****************************************************************************/ +void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb)(port); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe5 +****************************************************************************/ +void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("EAX,%x\n", port); + } else { + DECODE_PRINTF2("AX,%x\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl)(port); + } else { + M.x86.R_AX = (*sys_inw)(port); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe6 +****************************************************************************/ +void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + (*sys_outb)(port, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe7 +****************************************************************************/ +void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("%x,EAX\n", port); + } else { + DECODE_PRINTF2("%x,AX\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl)(port, M.x86.R_EAX); + } else { + (*sys_outw)(port, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe8 +****************************************************************************/ +void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + ip = (s16) fetch_word_imm(); + ip += (s16) M.x86.R_IP; /* CHECK SIGN */ + DECODE_PRINTF2("%04x\n", ip); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, ""); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe9 +****************************************************************************/ +void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + int ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + ip = (s16)fetch_word_imm(); + ip += (s16)M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_IP = (u16)ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xea +****************************************************************************/ +void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 cs, ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\tFAR "); + ip = fetch_word_imm(); + cs = fetch_word_imm(); + DECODE_PRINTF2("%04x:", cs); + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + M.x86.R_IP = ip; + M.x86.R_CS = cs; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xeb +****************************************************************************/ +void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xec +****************************************************************************/ +void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IN\tAL,DX\n"); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb)(M.x86.R_DX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xed +****************************************************************************/ +void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("IN\tEAX,DX\n"); + } else { + DECODE_PRINTF("IN\tAX,DX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl)(M.x86.R_DX); + } else { + M.x86.R_AX = (*sys_inw)(M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xee +****************************************************************************/ +void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUT\tDX,AL\n"); + TRACE_AND_STEP(); + (*sys_outb)(M.x86.R_DX, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xef +****************************************************************************/ +void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUT\tDX,EAX\n"); + } else { + DECODE_PRINTF("OUT\tDX,AX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl)(M.x86.R_DX, M.x86.R_EAX); + } else { + (*sys_outw)(M.x86.R_DX, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf0 +****************************************************************************/ +void x86emuOp_lock(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LOCK:\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0xf1 ILLEGAL OPERATION */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xf2 +****************************************************************************/ +void x86emuOp_repne(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPNE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPNE; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf3 +****************************************************************************/ +void x86emuOp_repe(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPE; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf4 +****************************************************************************/ +void x86emuOp_halt(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("HALT\n"); + TRACE_AND_STEP(); + HALT_SYS(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf5 +****************************************************************************/ +void x86emuOp_cmc(u8 X86EMU_UNUSED(op1)) +{ + /* complement the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CMC\n"); + TRACE_AND_STEP(); + TOGGLE_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf6 +****************************************************************************/ +void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval, srcval; + + /* long, drawn out code follows. Double switch for a total + of 32 cases. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTF(opF6_names[rh]); + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(destval); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + } else { /* mod=11 */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_byte(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_byte(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(*destreg); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(*destreg); + break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf7 +****************************************************************************/ +void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTF(opF6_names[rh]); + if (mod < 3) { + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_long(destoffset); + + switch (rh) { + case 0: + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(destval); + break; + } + } else { + u16 destval, srcval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_word(destoffset); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(destval); + break; + } + } + + } else { /* mod=11 */ + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_long(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_long(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(*destreg); + break; + } + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_word(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_word(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(*destreg); + break; + } + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf8 +****************************************************************************/ +void x86emuOp_clc(u8 X86EMU_UNUSED(op1)) +{ + /* clear the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CLC\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf9 +****************************************************************************/ +void x86emuOp_stc(u8 X86EMU_UNUSED(op1)) +{ + /* set the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("STC\n"); + TRACE_AND_STEP(); + SET_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfa +****************************************************************************/ +void x86emuOp_cli(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLI\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfb +****************************************************************************/ +void x86emuOp_sti(u8 X86EMU_UNUSED(op1)) +{ + /* enable interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STI\n"); + TRACE_AND_STEP(); + SET_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfc +****************************************************************************/ +void x86emuOp_cld(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLD\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfd +****************************************************************************/ +void x86emuOp_std(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STD\n"); + TRACE_AND_STEP(); + SET_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfe +****************************************************************************/ +void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u8 destval; + uint destoffset; + u8 *destreg; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("INC\t"); + break; + case 1: + DECODE_PRINTF("DEC\t"); + break; + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); + HALT_SYS(); + break; + } + } +#endif + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + if (rh == 0) + destval = inc_byte(destval); + else + destval = dec_byte(destval); + store_data_byte(destoffset, destval); + } else { + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + if (rh == 0) + *destreg = inc_byte(*destreg); + else + *destreg = dec_byte(*destreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xff +****************************************************************************/ +void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + uint destoffset = 0; + u16 *destreg; + u16 destval,destval2; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tDWORD PTR "); + } else { + DECODE_PRINTF("INC\tWORD PTR "); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tDWORD PTR "); + } else { + DECODE_PRINTF("DEC\tWORD PTR "); + } + break; + case 2: + DECODE_PRINTF("CALL\t "); + break; + case 3: + DECODE_PRINTF("CALL\tFAR "); + break; + case 4: + DECODE_PRINTF("JMP\t"); + break; + case 5: + DECODE_PRINTF("JMP\tFAR "); + break; + case 6: + DECODE_PRINTF("PUSH\t"); + break; + case 7: + DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); + HALT_SYS(); + break; + } + } +#endif + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: /* inc word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = inc_long(destval); + store_data_long(destoffset, destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: /* dec word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = dec_long(destval); + store_data_long(destoffset, destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } + } else { + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_word(*destreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_word(*destreg); + } + break; + case 2: /* call word ptr ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = *destreg; + break; + case 3: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + + case 4: /* jmp ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + M.x86.R_IP = (u16) (*destreg); + break; + case 5: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*destreg); + } + break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Single byte operation code table: + **************************************************************************/ +void (*x86emu_optab[256])(u8) __attribute__ ((section(".got2"))) = +{ +/* 0x00 */ x86emuOp_genop_byte_RM_R, +/* 0x01 */ x86emuOp_genop_word_RM_R, +/* 0x02 */ x86emuOp_genop_byte_R_RM, +/* 0x03 */ x86emuOp_genop_word_R_RM, +/* 0x04 */ x86emuOp_genop_byte_AL_IMM, +/* 0x05 */ x86emuOp_genop_word_AX_IMM, +/* 0x06 */ x86emuOp_push_ES, +/* 0x07 */ x86emuOp_pop_ES, + +/* 0x08 */ x86emuOp_genop_byte_RM_R, +/* 0x09 */ x86emuOp_genop_word_RM_R, +/* 0x0a */ x86emuOp_genop_byte_R_RM, +/* 0x0b */ x86emuOp_genop_word_R_RM, +/* 0x0c */ x86emuOp_genop_byte_AL_IMM, +/* 0x0d */ x86emuOp_genop_word_AX_IMM, +/* 0x0e */ x86emuOp_push_CS, +/* 0x0f */ x86emuOp_two_byte, + +/* 0x10 */ x86emuOp_genop_byte_RM_R, +/* 0x11 */ x86emuOp_genop_word_RM_R, +/* 0x12 */ x86emuOp_genop_byte_R_RM, +/* 0x13 */ x86emuOp_genop_word_R_RM, +/* 0x14 */ x86emuOp_genop_byte_AL_IMM, +/* 0x15 */ x86emuOp_genop_word_AX_IMM, +/* 0x16 */ x86emuOp_push_SS, +/* 0x17 */ x86emuOp_pop_SS, + +/* 0x18 */ x86emuOp_genop_byte_RM_R, +/* 0x19 */ x86emuOp_genop_word_RM_R, +/* 0x1a */ x86emuOp_genop_byte_R_RM, +/* 0x1b */ x86emuOp_genop_word_R_RM, +/* 0x1c */ x86emuOp_genop_byte_AL_IMM, +/* 0x1d */ x86emuOp_genop_word_AX_IMM, +/* 0x1e */ x86emuOp_push_DS, +/* 0x1f */ x86emuOp_pop_DS, + +/* 0x20 */ x86emuOp_genop_byte_RM_R, +/* 0x21 */ x86emuOp_genop_word_RM_R, +/* 0x22 */ x86emuOp_genop_byte_R_RM, +/* 0x23 */ x86emuOp_genop_word_R_RM, +/* 0x24 */ x86emuOp_genop_byte_AL_IMM, +/* 0x25 */ x86emuOp_genop_word_AX_IMM, +/* 0x26 */ x86emuOp_segovr_ES, +/* 0x27 */ x86emuOp_daa, + +/* 0x28 */ x86emuOp_genop_byte_RM_R, +/* 0x29 */ x86emuOp_genop_word_RM_R, +/* 0x2a */ x86emuOp_genop_byte_R_RM, +/* 0x2b */ x86emuOp_genop_word_R_RM, +/* 0x2c */ x86emuOp_genop_byte_AL_IMM, +/* 0x2d */ x86emuOp_genop_word_AX_IMM, +/* 0x2e */ x86emuOp_segovr_CS, +/* 0x2f */ x86emuOp_das, + +/* 0x30 */ x86emuOp_genop_byte_RM_R, +/* 0x31 */ x86emuOp_genop_word_RM_R, +/* 0x32 */ x86emuOp_genop_byte_R_RM, +/* 0x33 */ x86emuOp_genop_word_R_RM, +/* 0x34 */ x86emuOp_genop_byte_AL_IMM, +/* 0x35 */ x86emuOp_genop_word_AX_IMM, +/* 0x36 */ x86emuOp_segovr_SS, +/* 0x37 */ x86emuOp_aaa, + +/* 0x38 */ x86emuOp_genop_byte_RM_R, +/* 0x39 */ x86emuOp_genop_word_RM_R, +/* 0x3a */ x86emuOp_genop_byte_R_RM, +/* 0x3b */ x86emuOp_genop_word_R_RM, +/* 0x3c */ x86emuOp_genop_byte_AL_IMM, +/* 0x3d */ x86emuOp_genop_word_AX_IMM, +/* 0x3e */ x86emuOp_segovr_DS, +/* 0x3f */ x86emuOp_aas, + +/* 0x40 */ x86emuOp_inc_register, +/* 0x41 */ x86emuOp_inc_register, +/* 0x42 */ x86emuOp_inc_register, +/* 0x43 */ x86emuOp_inc_register, +/* 0x44 */ x86emuOp_inc_register, +/* 0x45 */ x86emuOp_inc_register, +/* 0x46 */ x86emuOp_inc_register, +/* 0x47 */ x86emuOp_inc_register, + +/* 0x48 */ x86emuOp_dec_register, +/* 0x49 */ x86emuOp_dec_register, +/* 0x4a */ x86emuOp_dec_register, +/* 0x4b */ x86emuOp_dec_register, +/* 0x4c */ x86emuOp_dec_register, +/* 0x4d */ x86emuOp_dec_register, +/* 0x4e */ x86emuOp_dec_register, +/* 0x4f */ x86emuOp_dec_register, + +/* 0x50 */ x86emuOp_push_register, +/* 0x51 */ x86emuOp_push_register, +/* 0x52 */ x86emuOp_push_register, +/* 0x53 */ x86emuOp_push_register, +/* 0x54 */ x86emuOp_push_register, +/* 0x55 */ x86emuOp_push_register, +/* 0x56 */ x86emuOp_push_register, +/* 0x57 */ x86emuOp_push_register, + +/* 0x58 */ x86emuOp_pop_register, +/* 0x59 */ x86emuOp_pop_register, +/* 0x5a */ x86emuOp_pop_register, +/* 0x5b */ x86emuOp_pop_register, +/* 0x5c */ x86emuOp_pop_register, +/* 0x5d */ x86emuOp_pop_register, +/* 0x5e */ x86emuOp_pop_register, +/* 0x5f */ x86emuOp_pop_register, + +/* 0x60 */ x86emuOp_push_all, +/* 0x61 */ x86emuOp_pop_all, +/* 0x62 */ x86emuOp_illegal_op, /* bound */ +/* 0x63 */ x86emuOp_illegal_op, /* arpl */ +/* 0x64 */ x86emuOp_segovr_FS, +/* 0x65 */ x86emuOp_segovr_GS, +/* 0x66 */ x86emuOp_prefix_data, +/* 0x67 */ x86emuOp_prefix_addr, + +/* 0x68 */ x86emuOp_push_word_IMM, +/* 0x69 */ x86emuOp_imul_word_IMM, +/* 0x6a */ x86emuOp_push_byte_IMM, +/* 0x6b */ x86emuOp_imul_byte_IMM, +/* 0x6c */ x86emuOp_ins_byte, +/* 0x6d */ x86emuOp_ins_word, +/* 0x6e */ x86emuOp_outs_byte, +/* 0x6f */ x86emuOp_outs_word, + +/* 0x70 */ x86emuOp_jump_near_cond, +/* 0x71 */ x86emuOp_jump_near_cond, +/* 0x72 */ x86emuOp_jump_near_cond, +/* 0x73 */ x86emuOp_jump_near_cond, +/* 0x74 */ x86emuOp_jump_near_cond, +/* 0x75 */ x86emuOp_jump_near_cond, +/* 0x76 */ x86emuOp_jump_near_cond, +/* 0x77 */ x86emuOp_jump_near_cond, + +/* 0x78 */ x86emuOp_jump_near_cond, +/* 0x79 */ x86emuOp_jump_near_cond, +/* 0x7a */ x86emuOp_jump_near_cond, +/* 0x7b */ x86emuOp_jump_near_cond, +/* 0x7c */ x86emuOp_jump_near_cond, +/* 0x7d */ x86emuOp_jump_near_cond, +/* 0x7e */ x86emuOp_jump_near_cond, +/* 0x7f */ x86emuOp_jump_near_cond, + +/* 0x80 */ x86emuOp_opc80_byte_RM_IMM, +/* 0x81 */ x86emuOp_opc81_word_RM_IMM, +/* 0x82 */ x86emuOp_opc82_byte_RM_IMM, +/* 0x83 */ x86emuOp_opc83_word_RM_IMM, +/* 0x84 */ x86emuOp_test_byte_RM_R, +/* 0x85 */ x86emuOp_test_word_RM_R, +/* 0x86 */ x86emuOp_xchg_byte_RM_R, +/* 0x87 */ x86emuOp_xchg_word_RM_R, + +/* 0x88 */ x86emuOp_mov_byte_RM_R, +/* 0x89 */ x86emuOp_mov_word_RM_R, +/* 0x8a */ x86emuOp_mov_byte_R_RM, +/* 0x8b */ x86emuOp_mov_word_R_RM, +/* 0x8c */ x86emuOp_mov_word_RM_SR, +/* 0x8d */ x86emuOp_lea_word_R_M, +/* 0x8e */ x86emuOp_mov_word_SR_RM, +/* 0x8f */ x86emuOp_pop_RM, + +/* 0x90 */ x86emuOp_nop, +/* 0x91 */ x86emuOp_xchg_word_AX_register, +/* 0x92 */ x86emuOp_xchg_word_AX_register, +/* 0x93 */ x86emuOp_xchg_word_AX_register, +/* 0x94 */ x86emuOp_xchg_word_AX_register, +/* 0x95 */ x86emuOp_xchg_word_AX_register, +/* 0x96 */ x86emuOp_xchg_word_AX_register, +/* 0x97 */ x86emuOp_xchg_word_AX_register, + +/* 0x98 */ x86emuOp_cbw, +/* 0x99 */ x86emuOp_cwd, +/* 0x9a */ x86emuOp_call_far_IMM, +/* 0x9b */ x86emuOp_wait, +/* 0x9c */ x86emuOp_pushf_word, +/* 0x9d */ x86emuOp_popf_word, +/* 0x9e */ x86emuOp_sahf, +/* 0x9f */ x86emuOp_lahf, + +/* 0xa0 */ x86emuOp_mov_AL_M_IMM, +/* 0xa1 */ x86emuOp_mov_AX_M_IMM, +/* 0xa2 */ x86emuOp_mov_M_AL_IMM, +/* 0xa3 */ x86emuOp_mov_M_AX_IMM, +/* 0xa4 */ x86emuOp_movs_byte, +/* 0xa5 */ x86emuOp_movs_word, +/* 0xa6 */ x86emuOp_cmps_byte, +/* 0xa7 */ x86emuOp_cmps_word, +/* 0xa8 */ x86emuOp_test_AL_IMM, +/* 0xa9 */ x86emuOp_test_AX_IMM, +/* 0xaa */ x86emuOp_stos_byte, +/* 0xab */ x86emuOp_stos_word, +/* 0xac */ x86emuOp_lods_byte, +/* 0xad */ x86emuOp_lods_word, +/* 0xac */ x86emuOp_scas_byte, +/* 0xad */ x86emuOp_scas_word, + +/* 0xb0 */ x86emuOp_mov_byte_register_IMM, +/* 0xb1 */ x86emuOp_mov_byte_register_IMM, +/* 0xb2 */ x86emuOp_mov_byte_register_IMM, +/* 0xb3 */ x86emuOp_mov_byte_register_IMM, +/* 0xb4 */ x86emuOp_mov_byte_register_IMM, +/* 0xb5 */ x86emuOp_mov_byte_register_IMM, +/* 0xb6 */ x86emuOp_mov_byte_register_IMM, +/* 0xb7 */ x86emuOp_mov_byte_register_IMM, + +/* 0xb8 */ x86emuOp_mov_word_register_IMM, +/* 0xb9 */ x86emuOp_mov_word_register_IMM, +/* 0xba */ x86emuOp_mov_word_register_IMM, +/* 0xbb */ x86emuOp_mov_word_register_IMM, +/* 0xbc */ x86emuOp_mov_word_register_IMM, +/* 0xbd */ x86emuOp_mov_word_register_IMM, +/* 0xbe */ x86emuOp_mov_word_register_IMM, +/* 0xbf */ x86emuOp_mov_word_register_IMM, + +/* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM, +/* 0xc1 */ x86emuOp_opcC1_word_RM_MEM, +/* 0xc2 */ x86emuOp_ret_near_IMM, +/* 0xc3 */ x86emuOp_ret_near, +/* 0xc4 */ x86emuOp_les_R_IMM, +/* 0xc5 */ x86emuOp_lds_R_IMM, +/* 0xc6 */ x86emuOp_mov_byte_RM_IMM, +/* 0xc7 */ x86emuOp_mov_word_RM_IMM, +/* 0xc8 */ x86emuOp_enter, +/* 0xc9 */ x86emuOp_leave, +/* 0xca */ x86emuOp_ret_far_IMM, +/* 0xcb */ x86emuOp_ret_far, +/* 0xcc */ x86emuOp_int3, +/* 0xcd */ x86emuOp_int_IMM, +/* 0xce */ x86emuOp_into, +/* 0xcf */ x86emuOp_iret, + +/* 0xd0 */ x86emuOp_opcD0_byte_RM_1, +/* 0xd1 */ x86emuOp_opcD1_word_RM_1, +/* 0xd2 */ x86emuOp_opcD2_byte_RM_CL, +/* 0xd3 */ x86emuOp_opcD3_word_RM_CL, +/* 0xd4 */ x86emuOp_aam, +/* 0xd5 */ x86emuOp_aad, +/* 0xd6 */ x86emuOp_illegal_op, /* Undocumented SETALC instruction */ +/* 0xd7 */ x86emuOp_xlat, +/* 0xd8 */ NULL, /*x86emuOp_esc_coprocess_d8,*/ +/* 0xd9 */ NULL, /*x86emuOp_esc_coprocess_d9,*/ +/* 0xda */ NULL, /*x86emuOp_esc_coprocess_da,*/ +/* 0xdb */ NULL, /*x86emuOp_esc_coprocess_db,*/ +/* 0xdc */ NULL, /*x86emuOp_esc_coprocess_dc,*/ +/* 0xdd */ NULL, /*x86emuOp_esc_coprocess_dd,*/ +/* 0xde */ NULL, /*x86emuOp_esc_coprocess_de,*/ +/* 0xdf */ NULL, /*x86emuOp_esc_coprocess_df,*/ + +/* 0xe0 */ x86emuOp_loopne, +/* 0xe1 */ x86emuOp_loope, +/* 0xe2 */ x86emuOp_loop, +/* 0xe3 */ x86emuOp_jcxz, +/* 0xe4 */ x86emuOp_in_byte_AL_IMM, +/* 0xe5 */ x86emuOp_in_word_AX_IMM, +/* 0xe6 */ x86emuOp_out_byte_IMM_AL, +/* 0xe7 */ x86emuOp_out_word_IMM_AX, + +/* 0xe8 */ x86emuOp_call_near_IMM, +/* 0xe9 */ x86emuOp_jump_near_IMM, +/* 0xea */ x86emuOp_jump_far_IMM, +/* 0xeb */ x86emuOp_jump_byte_IMM, +/* 0xec */ x86emuOp_in_byte_AL_DX, +/* 0xed */ x86emuOp_in_word_AX_DX, +/* 0xee */ x86emuOp_out_byte_DX_AL, +/* 0xef */ x86emuOp_out_word_DX_AX, + +/* 0xf0 */ x86emuOp_lock, +/* 0xf1 */ x86emuOp_illegal_op, +/* 0xf2 */ x86emuOp_repne, +/* 0xf3 */ x86emuOp_repe, +/* 0xf4 */ x86emuOp_halt, +/* 0xf5 */ x86emuOp_cmc, +/* 0xf6 */ x86emuOp_opcF6_byte_RM, +/* 0xf7 */ x86emuOp_opcF7_word_RM, + +/* 0xf8 */ x86emuOp_clc, +/* 0xf9 */ x86emuOp_stc, +/* 0xfa */ x86emuOp_cli, +/* 0xfb */ x86emuOp_sti, +/* 0xfc */ x86emuOp_cld, +/* 0xfd */ x86emuOp_std, +/* 0xfe */ x86emuOp_opcFE_byte_RM, +/* 0xff */ x86emuOp_opcFF_word_RM, +}; diff --git a/drivers/bios_emulator/x86emu/ops2.c b/drivers/bios_emulator/x86emu/ops2.c new file mode 100644 index 0000000..2412b24 --- /dev/null +++ b/drivers/bios_emulator/x86emu/ops2.c @@ -0,0 +1,1770 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. +* Jason Jin +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 extended two-byte processor +* instructions. +* +* Jason port this file to u-boot. Put the function pointer into +* got2 sector. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +void x86emuOp2_illegal_op( + u8 op2) +{ + START_OF_INSTR(); + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-2,op2); + HALT_SYS(); + END_OF_INSTR(); +} + +#define xorl(a,b) ((a) && !(b)) || (!(a) && (b)) + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x80-0x8F +****************************************************************************/ +int x86emu_check_jump_condition(u8 op) +{ + switch (op) { + case 0x0: + DECODE_PRINTF("JO\t"); + return ACCESS_FLAG(F_OF); + case 0x1: + DECODE_PRINTF("JNO\t"); + return !ACCESS_FLAG(F_OF); + break; + case 0x2: + DECODE_PRINTF("JB\t"); + return ACCESS_FLAG(F_CF); + break; + case 0x3: + DECODE_PRINTF("JNB\t"); + return !ACCESS_FLAG(F_CF); + break; + case 0x4: + DECODE_PRINTF("JZ\t"); + return ACCESS_FLAG(F_ZF); + break; + case 0x5: + DECODE_PRINTF("JNZ\t"); + return !ACCESS_FLAG(F_ZF); + break; + case 0x6: + DECODE_PRINTF("JBE\t"); + return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x7: + DECODE_PRINTF("JNBE\t"); + return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x8: + DECODE_PRINTF("JS\t"); + return ACCESS_FLAG(F_SF); + break; + case 0x9: + DECODE_PRINTF("JNS\t"); + return !ACCESS_FLAG(F_SF); + break; + case 0xa: + DECODE_PRINTF("JP\t"); + return ACCESS_FLAG(F_PF); + break; + case 0xb: + DECODE_PRINTF("JNP\t"); + return !ACCESS_FLAG(F_PF); + break; + case 0xc: + DECODE_PRINTF("JL\t"); + return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0xd: + DECODE_PRINTF("JNL\t"); + return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0xe: + DECODE_PRINTF("JLE\t"); + return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + default: + DECODE_PRINTF("JNLE\t"); + return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + } +} + +void x86emuOp2_long_jump(u8 op2) +{ + s32 target; + int cond; + + /* conditional jump to word offset. */ + START_OF_INSTR(); + cond = x86emu_check_jump_condition(op2 & 0xF); + target = (s16) fetch_word_imm(); + target += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", target); + TRACE_AND_STEP(); + if (cond) + M.x86.R_IP = (u16)target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x90-0x9F +****************************************************************************/ +void x86emuOp2_set_byte(u8 op2) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg; + char *name = 0; + int cond = 0; + + START_OF_INSTR(); + switch (op2) { + case 0x90: + name = "SETO\t"; + cond = ACCESS_FLAG(F_OF); + break; + case 0x91: + name = "SETNO\t"; + cond = !ACCESS_FLAG(F_OF); + break; + case 0x92: + name = "SETB\t"; + cond = ACCESS_FLAG(F_CF); + break; + case 0x93: + name = "SETNB\t"; + cond = !ACCESS_FLAG(F_CF); + break; + case 0x94: + name = "SETZ\t"; + cond = ACCESS_FLAG(F_ZF); + break; + case 0x95: + name = "SETNZ\t"; + cond = !ACCESS_FLAG(F_ZF); + break; + case 0x96: + name = "SETBE\t"; + cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x97: + name = "SETNBE\t"; + cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x98: + name = "SETS\t"; + cond = ACCESS_FLAG(F_SF); + break; + case 0x99: + name = "SETNS\t"; + cond = !ACCESS_FLAG(F_SF); + break; + case 0x9a: + name = "SETP\t"; + cond = ACCESS_FLAG(F_PF); + break; + case 0x9b: + name = "SETNP\t"; + cond = !ACCESS_FLAG(F_PF); + break; + case 0x9c: + name = "SETL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9d: + name = "SETNL\t"; + cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9e: + name = "SETLE\t"; + cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + case 0x9f: + name = "SETNLE\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + } + DECODE_PRINTF(name); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + TRACE_AND_STEP(); + *destreg = cond ? 0x01 : 0x00; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa0 +****************************************************************************/ +void x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tFS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_FS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa1 +****************************************************************************/ +void x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tFS\n"); + TRACE_AND_STEP(); + M.x86.R_FS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa3 +****************************************************************************/ +void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BT\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } else { + u16 srcval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } else { + u16 *srcreg,*shiftreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa4 +****************************************************************************/ +void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,shift); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa5 +****************************************************************************/ +void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa8 +****************************************************************************/ +void x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tGS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_GS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa9 +****************************************************************************/ +void x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tGS\n"); + TRACE_AND_STEP(); + M.x86.R_GS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xaa +****************************************************************************/ +void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval | mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, srcval | mask); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xac +****************************************************************************/ +void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,shift); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xad +****************************************************************************/ +void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xaf +****************************************************************************/ +void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16)*destreg * (s16)srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + res = (s16)*destreg * (s16)*srcreg; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb2 +****************************************************************************/ +void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LSS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb3 +****************************************************************************/ +void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval & ~mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval & ~mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb4 +****************************************************************************/ +void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LFS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb5 +****************************************************************************/ +void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LGS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb6 +****************************************************************************/ +void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb7 +****************************************************************************/ +void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xba +****************************************************************************/ +void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u8 shift; + int bit; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (rh) { + case 4: + DECODE_PRINTF("BT\t"); + break; + case 5: + DECODE_PRINTF("BTS\t"); + break; + case 6: + DECODE_PRINTF("BTR\t"); + break; + case 7: + DECODE_PRINTF("BTC\t"); + break; + default: + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n", + M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl); + HALT_SYS(); + } + if (mod < 3) { + + srcoffset = decode_rmXX_address(mod, rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } else { + u16 srcval, mask; + + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } else { + u16 *srcreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0xF; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbb +****************************************************************************/ +void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval ^ mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval ^ mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbc +****************************************************************************/ +void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSF\n"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *dstreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((*srcreg >> *dstreg) & 1) break; + } else { + u16 *srcreg, *dstreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((*srcreg >> *dstreg) & 1) break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbd +****************************************************************************/ +void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSF\n"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *dstreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((*srcreg >> *dstreg) & 1) break; + } else { + u16 *srcreg, *dstreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((*srcreg >> *dstreg) & 1) break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbe +****************************************************************************/ +void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s16)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s8)*srcreg); + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s16)((s8)*srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbf +****************************************************************************/ +void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s16)fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s16)*srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Double byte operation code table: + **************************************************************************/ +void (*x86emu_optab2[256])(u8) __attribute__((section(".got2"))) = +{ +/* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */ +/* 0x01 */ x86emuOp2_illegal_op, /* Group G (ring 0 PM) */ +/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */ +/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */ +/* 0x04 */ x86emuOp2_illegal_op, +/* 0x05 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ +/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */ +/* 0x07 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ +/* 0x08 */ x86emuOp2_illegal_op, /* invd (ring 0 PM) */ +/* 0x09 */ x86emuOp2_illegal_op, /* wbinvd (ring 0 PM) */ +/* 0x0a */ x86emuOp2_illegal_op, +/* 0x0b */ x86emuOp2_illegal_op, +/* 0x0c */ x86emuOp2_illegal_op, +/* 0x0d */ x86emuOp2_illegal_op, +/* 0x0e */ x86emuOp2_illegal_op, +/* 0x0f */ x86emuOp2_illegal_op, + +/* 0x10 */ x86emuOp2_illegal_op, +/* 0x11 */ x86emuOp2_illegal_op, +/* 0x12 */ x86emuOp2_illegal_op, +/* 0x13 */ x86emuOp2_illegal_op, +/* 0x14 */ x86emuOp2_illegal_op, +/* 0x15 */ x86emuOp2_illegal_op, +/* 0x16 */ x86emuOp2_illegal_op, +/* 0x17 */ x86emuOp2_illegal_op, +/* 0x18 */ x86emuOp2_illegal_op, +/* 0x19 */ x86emuOp2_illegal_op, +/* 0x1a */ x86emuOp2_illegal_op, +/* 0x1b */ x86emuOp2_illegal_op, +/* 0x1c */ x86emuOp2_illegal_op, +/* 0x1d */ x86emuOp2_illegal_op, +/* 0x1e */ x86emuOp2_illegal_op, +/* 0x1f */ x86emuOp2_illegal_op, + +/* 0x20 */ x86emuOp2_illegal_op, /* mov reg32,creg (ring 0 PM) */ +/* 0x21 */ x86emuOp2_illegal_op, /* mov reg32,dreg (ring 0 PM) */ +/* 0x22 */ x86emuOp2_illegal_op, /* mov creg,reg32 (ring 0 PM) */ +/* 0x23 */ x86emuOp2_illegal_op, /* mov dreg,reg32 (ring 0 PM) */ +/* 0x24 */ x86emuOp2_illegal_op, /* mov reg32,treg (ring 0 PM) */ +/* 0x25 */ x86emuOp2_illegal_op, +/* 0x26 */ x86emuOp2_illegal_op, /* mov treg,reg32 (ring 0 PM) */ +/* 0x27 */ x86emuOp2_illegal_op, +/* 0x28 */ x86emuOp2_illegal_op, +/* 0x29 */ x86emuOp2_illegal_op, +/* 0x2a */ x86emuOp2_illegal_op, +/* 0x2b */ x86emuOp2_illegal_op, +/* 0x2c */ x86emuOp2_illegal_op, +/* 0x2d */ x86emuOp2_illegal_op, +/* 0x2e */ x86emuOp2_illegal_op, +/* 0x2f */ x86emuOp2_illegal_op, + +/* 0x30 */ x86emuOp2_illegal_op, +/* 0x31 */ x86emuOp2_illegal_op, +/* 0x32 */ x86emuOp2_illegal_op, +/* 0x33 */ x86emuOp2_illegal_op, +/* 0x34 */ x86emuOp2_illegal_op, +/* 0x35 */ x86emuOp2_illegal_op, +/* 0x36 */ x86emuOp2_illegal_op, +/* 0x37 */ x86emuOp2_illegal_op, +/* 0x38 */ x86emuOp2_illegal_op, +/* 0x39 */ x86emuOp2_illegal_op, +/* 0x3a */ x86emuOp2_illegal_op, +/* 0x3b */ x86emuOp2_illegal_op, +/* 0x3c */ x86emuOp2_illegal_op, +/* 0x3d */ x86emuOp2_illegal_op, +/* 0x3e */ x86emuOp2_illegal_op, +/* 0x3f */ x86emuOp2_illegal_op, + +/* 0x40 */ x86emuOp2_illegal_op, +/* 0x41 */ x86emuOp2_illegal_op, +/* 0x42 */ x86emuOp2_illegal_op, +/* 0x43 */ x86emuOp2_illegal_op, +/* 0x44 */ x86emuOp2_illegal_op, +/* 0x45 */ x86emuOp2_illegal_op, +/* 0x46 */ x86emuOp2_illegal_op, +/* 0x47 */ x86emuOp2_illegal_op, +/* 0x48 */ x86emuOp2_illegal_op, +/* 0x49 */ x86emuOp2_illegal_op, +/* 0x4a */ x86emuOp2_illegal_op, +/* 0x4b */ x86emuOp2_illegal_op, +/* 0x4c */ x86emuOp2_illegal_op, +/* 0x4d */ x86emuOp2_illegal_op, +/* 0x4e */ x86emuOp2_illegal_op, +/* 0x4f */ x86emuOp2_illegal_op, + +/* 0x50 */ x86emuOp2_illegal_op, +/* 0x51 */ x86emuOp2_illegal_op, +/* 0x52 */ x86emuOp2_illegal_op, +/* 0x53 */ x86emuOp2_illegal_op, +/* 0x54 */ x86emuOp2_illegal_op, +/* 0x55 */ x86emuOp2_illegal_op, +/* 0x56 */ x86emuOp2_illegal_op, +/* 0x57 */ x86emuOp2_illegal_op, +/* 0x58 */ x86emuOp2_illegal_op, +/* 0x59 */ x86emuOp2_illegal_op, +/* 0x5a */ x86emuOp2_illegal_op, +/* 0x5b */ x86emuOp2_illegal_op, +/* 0x5c */ x86emuOp2_illegal_op, +/* 0x5d */ x86emuOp2_illegal_op, +/* 0x5e */ x86emuOp2_illegal_op, +/* 0x5f */ x86emuOp2_illegal_op, + +/* 0x60 */ x86emuOp2_illegal_op, +/* 0x61 */ x86emuOp2_illegal_op, +/* 0x62 */ x86emuOp2_illegal_op, +/* 0x63 */ x86emuOp2_illegal_op, +/* 0x64 */ x86emuOp2_illegal_op, +/* 0x65 */ x86emuOp2_illegal_op, +/* 0x66 */ x86emuOp2_illegal_op, +/* 0x67 */ x86emuOp2_illegal_op, +/* 0x68 */ x86emuOp2_illegal_op, +/* 0x69 */ x86emuOp2_illegal_op, +/* 0x6a */ x86emuOp2_illegal_op, +/* 0x6b */ x86emuOp2_illegal_op, +/* 0x6c */ x86emuOp2_illegal_op, +/* 0x6d */ x86emuOp2_illegal_op, +/* 0x6e */ x86emuOp2_illegal_op, +/* 0x6f */ x86emuOp2_illegal_op, + +/* 0x70 */ x86emuOp2_illegal_op, +/* 0x71 */ x86emuOp2_illegal_op, +/* 0x72 */ x86emuOp2_illegal_op, +/* 0x73 */ x86emuOp2_illegal_op, +/* 0x74 */ x86emuOp2_illegal_op, +/* 0x75 */ x86emuOp2_illegal_op, +/* 0x76 */ x86emuOp2_illegal_op, +/* 0x77 */ x86emuOp2_illegal_op, +/* 0x78 */ x86emuOp2_illegal_op, +/* 0x79 */ x86emuOp2_illegal_op, +/* 0x7a */ x86emuOp2_illegal_op, +/* 0x7b */ x86emuOp2_illegal_op, +/* 0x7c */ x86emuOp2_illegal_op, +/* 0x7d */ x86emuOp2_illegal_op, +/* 0x7e */ x86emuOp2_illegal_op, +/* 0x7f */ x86emuOp2_illegal_op, + +/* 0x80 */ x86emuOp2_long_jump, +/* 0x81 */ x86emuOp2_long_jump, +/* 0x82 */ x86emuOp2_long_jump, +/* 0x83 */ x86emuOp2_long_jump, +/* 0x84 */ x86emuOp2_long_jump, +/* 0x85 */ x86emuOp2_long_jump, +/* 0x86 */ x86emuOp2_long_jump, +/* 0x87 */ x86emuOp2_long_jump, +/* 0x88 */ x86emuOp2_long_jump, +/* 0x89 */ x86emuOp2_long_jump, +/* 0x8a */ x86emuOp2_long_jump, +/* 0x8b */ x86emuOp2_long_jump, +/* 0x8c */ x86emuOp2_long_jump, +/* 0x8d */ x86emuOp2_long_jump, +/* 0x8e */ x86emuOp2_long_jump, +/* 0x8f */ x86emuOp2_long_jump, + +/* 0x90 */ x86emuOp2_set_byte, +/* 0x91 */ x86emuOp2_set_byte, +/* 0x92 */ x86emuOp2_set_byte, +/* 0x93 */ x86emuOp2_set_byte, +/* 0x94 */ x86emuOp2_set_byte, +/* 0x95 */ x86emuOp2_set_byte, +/* 0x96 */ x86emuOp2_set_byte, +/* 0x97 */ x86emuOp2_set_byte, +/* 0x98 */ x86emuOp2_set_byte, +/* 0x99 */ x86emuOp2_set_byte, +/* 0x9a */ x86emuOp2_set_byte, +/* 0x9b */ x86emuOp2_set_byte, +/* 0x9c */ x86emuOp2_set_byte, +/* 0x9d */ x86emuOp2_set_byte, +/* 0x9e */ x86emuOp2_set_byte, +/* 0x9f */ x86emuOp2_set_byte, + +/* 0xa0 */ x86emuOp2_push_FS, +/* 0xa1 */ x86emuOp2_pop_FS, +/* 0xa2 */ x86emuOp2_illegal_op, +/* 0xa3 */ x86emuOp2_bt_R, +/* 0xa4 */ x86emuOp2_shld_IMM, +/* 0xa5 */ x86emuOp2_shld_CL, +/* 0xa6 */ x86emuOp2_illegal_op, +/* 0xa7 */ x86emuOp2_illegal_op, +/* 0xa8 */ x86emuOp2_push_GS, +/* 0xa9 */ x86emuOp2_pop_GS, +/* 0xaa */ x86emuOp2_illegal_op, +/* 0xab */ x86emuOp2_bt_R, +/* 0xac */ x86emuOp2_shrd_IMM, +/* 0xad */ x86emuOp2_shrd_CL, +/* 0xae */ x86emuOp2_illegal_op, +/* 0xaf */ x86emuOp2_imul_R_RM, + +/* 0xb0 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */ +/* 0xb1 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */ +/* 0xb2 */ x86emuOp2_lss_R_IMM, +/* 0xb3 */ x86emuOp2_btr_R, +/* 0xb4 */ x86emuOp2_lfs_R_IMM, +/* 0xb5 */ x86emuOp2_lgs_R_IMM, +/* 0xb6 */ x86emuOp2_movzx_byte_R_RM, +/* 0xb7 */ x86emuOp2_movzx_word_R_RM, +/* 0xb8 */ x86emuOp2_illegal_op, +/* 0xb9 */ x86emuOp2_illegal_op, +/* 0xba */ x86emuOp2_btX_I, +/* 0xbb */ x86emuOp2_btc_R, +/* 0xbc */ x86emuOp2_bsf, +/* 0xbd */ x86emuOp2_bsr, +/* 0xbe */ x86emuOp2_movsx_byte_R_RM, +/* 0xbf */ x86emuOp2_movsx_word_R_RM, + +/* 0xc0 */ x86emuOp2_illegal_op, /* TODO: xadd */ +/* 0xc1 */ x86emuOp2_illegal_op, /* TODO: xadd */ +/* 0xc2 */ x86emuOp2_illegal_op, +/* 0xc3 */ x86emuOp2_illegal_op, +/* 0xc4 */ x86emuOp2_illegal_op, +/* 0xc5 */ x86emuOp2_illegal_op, +/* 0xc6 */ x86emuOp2_illegal_op, +/* 0xc7 */ x86emuOp2_illegal_op, +/* 0xc8 */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xc9 */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xca */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xcb */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xcc */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xcd */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xce */ x86emuOp2_illegal_op, /* TODO: bswap */ +/* 0xcf */ x86emuOp2_illegal_op, /* TODO: bswap */ + +/* 0xd0 */ x86emuOp2_illegal_op, +/* 0xd1 */ x86emuOp2_illegal_op, +/* 0xd2 */ x86emuOp2_illegal_op, +/* 0xd3 */ x86emuOp2_illegal_op, +/* 0xd4 */ x86emuOp2_illegal_op, +/* 0xd5 */ x86emuOp2_illegal_op, +/* 0xd6 */ x86emuOp2_illegal_op, +/* 0xd7 */ x86emuOp2_illegal_op, +/* 0xd8 */ x86emuOp2_illegal_op, +/* 0xd9 */ x86emuOp2_illegal_op, +/* 0xda */ x86emuOp2_illegal_op, +/* 0xdb */ x86emuOp2_illegal_op, +/* 0xdc */ x86emuOp2_illegal_op, +/* 0xdd */ x86emuOp2_illegal_op, +/* 0xde */ x86emuOp2_illegal_op, +/* 0xdf */ x86emuOp2_illegal_op, + +/* 0xe0 */ x86emuOp2_illegal_op, +/* 0xe1 */ x86emuOp2_illegal_op, +/* 0xe2 */ x86emuOp2_illegal_op, +/* 0xe3 */ x86emuOp2_illegal_op, +/* 0xe4 */ x86emuOp2_illegal_op, +/* 0xe5 */ x86emuOp2_illegal_op, +/* 0xe6 */ x86emuOp2_illegal_op, +/* 0xe7 */ x86emuOp2_illegal_op, +/* 0xe8 */ x86emuOp2_illegal_op, +/* 0xe9 */ x86emuOp2_illegal_op, +/* 0xea */ x86emuOp2_illegal_op, +/* 0xeb */ x86emuOp2_illegal_op, +/* 0xec */ x86emuOp2_illegal_op, +/* 0xed */ x86emuOp2_illegal_op, +/* 0xee */ x86emuOp2_illegal_op, +/* 0xef */ x86emuOp2_illegal_op, + +/* 0xf0 */ x86emuOp2_illegal_op, +/* 0xf1 */ x86emuOp2_illegal_op, +/* 0xf2 */ x86emuOp2_illegal_op, +/* 0xf3 */ x86emuOp2_illegal_op, +/* 0xf4 */ x86emuOp2_illegal_op, +/* 0xf5 */ x86emuOp2_illegal_op, +/* 0xf6 */ x86emuOp2_illegal_op, +/* 0xf7 */ x86emuOp2_illegal_op, +/* 0xf8 */ x86emuOp2_illegal_op, +/* 0xf9 */ x86emuOp2_illegal_op, +/* 0xfa */ x86emuOp2_illegal_op, +/* 0xfb */ x86emuOp2_illegal_op, +/* 0xfc */ x86emuOp2_illegal_op, +/* 0xfd */ x86emuOp2_illegal_op, +/* 0xfe */ x86emuOp2_illegal_op, +/* 0xff */ x86emuOp2_illegal_op, +}; diff --git a/drivers/bios_emulator/x86emu/prim_ops.c b/drivers/bios_emulator/x86emu/prim_ops.c new file mode 100644 index 0000000..dc8cea8 --- /dev/null +++ b/drivers/bios_emulator/x86emu/prim_ops.c @@ -0,0 +1,2446 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to implement the primitive +* machine operations used by the emulation code in ops.c +* +* Carry Chain Calculation +* +* This represents a somewhat expensive calculation which is +* apparently required to emulate the setting of the OF343364 and AF flag. +* The latter is not so important, but the former is. The overflow +* flag is the XOR of the top two bits of the carry chain for an +* addition (similar for subtraction). Since we do not want to +* simulate the addition in a bitwise manner, we try to calculate the +* carry chain given the two operands and the result. +* +* So, given the following table, which represents the addition of two +* bits, we can derive a formula for the carry chain. +* +* a b cin r cout +* 0 0 0 0 0 +* 0 0 1 1 0 +* 0 1 0 1 0 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 1 +* 1 1 0 0 1 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 1 1 +* 1 | 0 0 1 0 +* +* By inspection, one gets: cc = ab + r'(a + b) +* +* That represents alot of operations, but NO CHOICE.... +* +* Borrow Chain Calculation. +* +* The following table represents the subtraction of two bits, from +* which we can derive a formula for the borrow chain. +* +* a b bin r bout +* 0 0 0 0 0 +* 0 0 1 1 1 +* 0 1 0 1 1 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 0 +* 1 1 0 0 0 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 0 0 +* 1 | 1 1 1 0 +* +* By inspection, one gets: bc = a'b + r(a' + b) +* +****************************************************************************/ + +#define PRIM_OPS_NO_REDEFINE_ASM +#include "x86emu/x86emui.h" + +/*------------------------- Global Variables ------------------------------*/ + +static u32 x86emu_parity_tab[8] = +{ + 0x96696996, + 0x69969669, + 0x69969669, + 0x96696996, + 0x69969669, + 0x96696996, + 0x96696996, + 0x69969669, +}; + +#define PARITY(x) (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0) +#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1) +/*----------------------------- Implementation ----------------------------*/ +int abs(int v) +{ + return (v>0)?v:-v; +} + +/*----------------------------- Implementation ----------------------------*/ + + +/*--------- Side effects helper functions -------*/ + +/**************************************************************************** +REMARKS: +implements side efects for byte operations that don't overflow +****************************************************************************/ + +static void set_parity_flag(u32 res) +{ + CONDITIONAL_SET_FLAG(PARITY(res & 0xFF), F_PF); +} + +static void set_szp_flags_8(u8 res) +{ + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void set_szp_flags_16(u16 res) +{ + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void set_szp_flags_32(u32 res) +{ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void no_carry_byte_side_eff(u8 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_8(res); +} + +static void no_carry_word_side_eff(u16 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_16(res); +} + +static void no_carry_long_side_eff(u32 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_32(res); +} + +static void calc_carry_chain(int bits, u32 d, u32 s, u32 res, int set_carry) +{ + u32 cc; + + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> (bits - 2)), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + if (set_carry) { + CONDITIONAL_SET_FLAG(res & (1 << bits), F_CF); + } +} + +static void calc_borrow_chain(int bits, u32 d, u32 s, u32 res, int set_carry) +{ + u32 bc; + + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(XOR2(bc >> (bits - 2)), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + if (set_carry) { + CONDITIONAL_SET_FLAG(bc & (1 << (bits - 1)), F_CF); + } +} + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 aaa_word(u16 d) +{ + u16 res; + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d += 0x6; + d += 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16)(d & 0xFF0F); + set_szp_flags_16(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 aas_word(u16 d) +{ + u16 res; + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d -= 0x6; + d -= 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16)(d & 0xFF0F); + set_szp_flags_16(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAD instruction and side effects. +****************************************************************************/ +u16 aad_word(u16 d) +{ + u16 l; + u8 hb, lb; + + hb = (u8)((d >> 8) & 0xff); + lb = (u8)((d & 0xff)); + l = (u16)((lb + 10 * hb) & 0xFF); + + no_carry_byte_side_eff(l & 0xFF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the AAM instruction and side effects. +****************************************************************************/ +u16 aam_word(u8 d) +{ + u16 h, l; + + h = (u16)(d / 10); + l = (u16)(d % 10); + l |= (u16)(h << 8); + + no_carry_byte_side_eff(l & 0xFF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u8 adc_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + if (ACCESS_FLAG(F_CF)) res++; + + set_szp_flags_8(res); + calc_carry_chain(8,s,d,res,1); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u16 adc_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + if (ACCESS_FLAG(F_CF)) + res++; + + set_szp_flags_16((u16)res); + calc_carry_chain(16,s,d,res,1); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u32 adc_long(u32 d, u32 s) +{ + u32 lo; /* all operands in native machine order */ + u32 hi; + u32 res; + + lo = (d & 0xFFFF) + (s & 0xFFFF); + res = d + s; + + if (ACCESS_FLAG(F_CF)) { + lo++; + res++; + } + + hi = (lo >> 16) + (d >> 16) + (s >> 16); + + set_szp_flags_32(res); + calc_carry_chain(32,s,d,res,0); + + CONDITIONAL_SET_FLAG(hi & 0x10000, F_CF); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u8 add_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + set_szp_flags_8((u8)res); + calc_carry_chain(8,s,d,res,1); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u16 add_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + set_szp_flags_16((u16)res); + calc_carry_chain(16,s,d,res,1); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u32 add_long(u32 d, u32 s) +{ + u32 res; + + res = d + s; + set_szp_flags_32(res); + calc_carry_chain(32,s,d,res,0); + + CONDITIONAL_SET_FLAG(res < d || res < s, F_CF); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u8 and_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d & s; + + no_carry_byte_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u16 and_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d & s; + + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u32 and_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u8 cmp_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_8((u8)res); + calc_borrow_chain(8, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u16 cmp_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u32 cmp_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_32(res); + calc_borrow_chain(32, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DAA instruction and side effects. +****************************************************************************/ +u8 daa_byte(u8 d) +{ + u32 res = d; + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + res += 6; + SET_FLAG(F_AF); + } + if (res > 0x9F || ACCESS_FLAG(F_CF)) { + res += 0x60; + SET_FLAG(F_CF); + } + set_szp_flags_8((u8)res); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the DAS instruction and side effects. +****************************************************************************/ +u8 das_byte(u8 d) +{ + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + d -= 6; + SET_FLAG(F_AF); + } + if (d > 0x9F || ACCESS_FLAG(F_CF)) { + d -= 0x60; + SET_FLAG(F_CF); + } + set_szp_flags_8(d); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u8 dec_byte(u8 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + set_szp_flags_8((u8)res); + calc_borrow_chain(8, d, 1, res, 0); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u16 dec_word(u16 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, d, 1, res, 0); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u32 dec_long(u32 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + + set_szp_flags_32(res); + calc_borrow_chain(32, d, 1, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u8 inc_byte(u8 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_8((u8)res); + calc_carry_chain(8, d, 1, res, 0); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u16 inc_word(u16 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_16((u16)res); + calc_carry_chain(16, d, 1, res, 0); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u32 inc_long(u32 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_32(res); + calc_carry_chain(32, d, 1, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 or_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d | s; + no_carry_byte_side_eff(res); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 or_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d | s; + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 or_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d | s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 neg_byte(u8 s) +{ + u8 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u8)-s; + set_szp_flags_8(res); + calc_borrow_chain(8, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 neg_word(u16 s) +{ + u16 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u16)-s; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 neg_long(u32 s) +{ + u32 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u32)-s; + set_szp_flags_32(res); + calc_borrow_chain(32, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u8 not_byte(u8 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u16 not_word(u16 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u32 not_long(u32 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u8 rcl_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask, cf; + + /* s is the rotate distance. It varies from 0 - 8. */ + /* have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + want to rotate through the carry by "s" bits. We could + loop, but that's inefficient. So the width is 9, + and we split into three parts: + + The new carry flag (was B_n) + the stuff in B_n-1 .. B_0 + the stuff in B_7 .. B_n+1 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the MSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(8-n) + 2) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 + 3) B_(n-1) <- cf + 4) B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(8-n) */ + cf = (d >> (8 - cnt)) & 0x1; + + /* get the low stuff which rotated + into the range B_7 .. B_cnt */ + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */ + /* note that the right hand side done by the mask */ + res = (d << cnt) & 0xff; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (9 - cnt)) & mask; + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(n-1) <- cf */ + res |= 1 << (cnt - 1); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized this expression since it appears to + be causing OF to be misset */ + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)), + F_OF); + + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u16 rcl_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask, cf; + + res = d; + if ((cnt = s % 17) != 0) { + cf = (d >> (16 - cnt)) & 0x1; + res = (d << cnt) & 0xffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (17 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)), + F_OF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u32 rcl_long(u32 d, u8 s) +{ + u32 res, cnt, mask, cf; + + res = d; + if ((cnt = s % 33) != 0) { + cf = (d >> (32 - cnt)) & 0x1; + res = (d << cnt) & 0xffffffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (33 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)), + F_OF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u8 rcr_byte(u8 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the LSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(n-1) + 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 3) B_(8-n) <- cf + 4) B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(n-1) */ + if (cnt == 1) { + cf = d & 0x1; + /* note hackery here. Access_flag(..) evaluates to either + 0 if flag not set + non-zero if flag is set. + doing access_flag(..) != 0 casts that into either + 0..1 in any representation of the flags register + (i.e. packed bit array or unpacked.) + */ + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */ + /* note that the right hand side done by the mask + This is effectively done by shifting the + object to the right. The result must be masked, + in case the object came in and was treated + as a negative number. Needed??? */ + + mask = (1 << (8 - cnt)) - 1; + res = (d >> cnt) & mask; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + res |= (d << (9 - cnt)); + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(8-n) <- cf */ + res |= 1 << (8 - cnt); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized... */ + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)), + F_OF); + } + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u16 rcr_word(u16 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 17) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (16 - cnt)) - 1; + res = (d >> cnt) & mask; + res |= (d << (17 - cnt)); + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (16 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)), + F_OF); + } + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u32 rcr_long(u32 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 33) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (32 - cnt)) - 1; + res = (d >> cnt) & mask; + if (cnt != 1) + res |= (d << (33 - cnt)); + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (32 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)), + F_OF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u8 rol_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask; + + /* rotate left */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 ... B_0 + + The new rotate is done mod 8. + Much simpler than the "rcl" or "rcr" operations. + + IF n > 0 + 1) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) + 2) B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) + */ + res = d; + if ((cnt = s % 8) != 0) { + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */ + res = (d << cnt); + + /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */ + mask = (1 << cnt) - 1; + res |= (d >> (8 - cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of CF and the most significant bit. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 6) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u16 rol_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (16 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 14) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u32 rol_long(u32 d, u8 s) +{ + u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (32 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 30) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u8 ror_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask; + + /* rotate right */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + B_7 ... B_0 + + The rotate is done mod 8. + + IF n > 0 + 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 2) B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) + */ + res = d; + if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */ + /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ + res = (d << (8 - cnt)); + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */ + mask = (1 << (8 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of the two most significant bits. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u16 ror_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << (16 - cnt)); + mask = (1 << (16 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u32 ror_long(u32 d, u8 s) +{ + u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << (32 - cnt)); + mask = (1 << (32 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u8 shl_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + + /* last bit shifted out goes into carry flag */ + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (8 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + /* Needs simplification. */ + CONDITIONAL_SET_FLAG( + (((res & 0x80) == 0x80) ^ + (ACCESS_FLAG(F_CF) != 0)), + /* was (M.x86.R_FLG&F_CF)==F_CF)), */ + F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u16 shl_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = (u16) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG( + (((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), + F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u32 shl_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u8 shr_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d >> (s-1)) & 0x1, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u16 shr_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u32 shr_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u8 sar_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + res = d; + sf = d & 0x80; + cnt = s % 8; + if (cnt > 0 && cnt < 8) { + mask = (1 << (8 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_8((u8)res); + } else if (cnt >= 8) { + if (sf) { + res = 0xff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u16 sar_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + sf = d & 0x8000; + cnt = s % 16; + res = d; + if (cnt > 0 && cnt < 16) { + mask = (1 << (16 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_16((u16)res); + } else if (cnt >= 16) { + if (sf) { + res = 0xffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u32 sar_long(u32 d, u8 s) +{ + u32 cnt, res, cf, mask, sf; + + sf = d & 0x80000000; + cnt = s % 32; + res = d; + if (cnt > 0 && cnt < 32) { + mask = (1 << (32 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_32(res); + } else if (cnt >= 32) { + if (sf) { + res = 0xffffffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u16 shld_word (u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = (d << cnt) | (fill >> (16-cnt)); + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u32 shld_long (u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = (d << cnt) | (fill >> (32-cnt)); + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u16 shrd_word (u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u32 shrd_long (u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u8 sbb_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + set_szp_flags_8((u8)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u16 sbb_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + set_szp_flags_16((u16)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u32 sbb_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + + set_szp_flags_32(res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u8 sub_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_8((u8)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u16 sub_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_16((u16)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u32 sub_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_32(res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_8((u8)res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_16((u16)res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_32(res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u8 xor_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_byte_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u16 xor_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u32 xor_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_byte(u8 s) +{ + s16 res = (s16)((s8)M.x86.R_AL * (s8)s); + + M.x86.R_AX = res; + if (((M.x86.R_AL & 0x80) == 0 && M.x86.R_AH == 0x00) || + ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_word(u16 s) +{ + s32 res = (s16)M.x86.R_AX * (s16)s; + + M.x86.R_AX = (u16)res; + M.x86.R_DX = (u16)(res >> 16); + if (((M.x86.R_AX & 0x8000) == 0 && M.x86.R_DX == 0x0000) || + ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 res = (s32)d * (s32)s; + + *res_lo = (u32)res; + *res_hi = (u32)(res >> 32); +#else + u32 d_lo,d_hi,d_sign; + u32 s_lo,s_hi,s_sign; + u32 rlo_lo,rlo_hi,rhi_lo; + + if ((d_sign = d & 0x80000000) != 0) + d = -d; + d_lo = d & 0xFFFF; + d_hi = d >> 16; + if ((s_sign = s & 0x80000000) != 0) + s = -s; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = d_lo * s_lo; + rlo_hi = (d_hi * s_lo + d_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = d_hi * s_hi + (rlo_hi >> 16); + *res_lo = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + *res_hi = rhi_lo; + if (d_sign != s_sign) { + d = ~*res_lo; + s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16); + *res_lo = ~*res_lo+1; + *res_hi = ~*res_hi+(s >> 16); + } +#endif +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_long(u32 s) +{ + imul_long_direct(&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s); + if (((M.x86.R_EAX & 0x80000000) == 0 && M.x86.R_EDX == 0x00000000) || + ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFFFFFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_byte(u8 s) +{ + u16 res = (u16)(M.x86.R_AL * s); + + M.x86.R_AX = res; + if (M.x86.R_AH == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_word(u16 s) +{ + u32 res = M.x86.R_AX * s; + + M.x86.R_AX = (u16)res; + M.x86.R_DX = (u16)(res >> 16); + if (M.x86.R_DX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 res = (u32)M.x86.R_EAX * (u32)s; + + M.x86.R_EAX = (u32)res; + M.x86.R_EDX = (u32)(res >> 32); +#else + u32 a,a_lo,a_hi; + u32 s_lo,s_hi; + u32 rlo_lo,rlo_hi,rhi_lo; + + a = M.x86.R_EAX; + a_lo = a & 0xFFFF; + a_hi = a >> 16; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = a_lo * s_lo; + rlo_hi = (a_hi * s_lo + a_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = a_hi * s_hi + (rlo_hi >> 16); + M.x86.R_EAX = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + M.x86.R_EDX = rhi_lo; +#endif + if (M.x86.R_EDX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_byte(u8 s) +{ + s32 dvd, div, mod; + + dvd = (s16)M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s8)s; + mod = dvd % (s8)s; + if (abs(div) > 0x7f) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (s8) div; + M.x86.R_AH = (s8) mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_word(u16 s) +{ + s32 dvd, div, mod; + + dvd = (((s32)M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s16)s; + mod = dvd % (s16)s; + if (abs(div) > 0x7fff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + set_parity_flag(mod); + + M.x86.R_AX = (u16)div; + M.x86.R_DX = (u16)mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 dvd, div, mod; + + dvd = (((s64)M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s32)s; + mod = dvd % (s32)s; + if (abs(div) > 0x7fffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + u32 abs_s = s & 0x7FFFFFFF; + u32 abs_h_dvd = h_dvd & 0x7FFFFFFF; + u32 h_s = abs_s >> 1; + u32 l_s = abs_s << 31; + int counter = 31; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (abs_h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = abs_s << (--counter); + continue; + } else { + abs_h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = abs_s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (abs_h_dvd || (l_dvd > abs_s)) { + x86emu_intr_raise(0); + return; + } + /* sign */ + div |= ((h_dvd & 0x10000000) ^ (s & 0x10000000)); + mod = l_dvd; + +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + set_parity_flag(mod); + + M.x86.R_EAX = (u32)div; + M.x86.R_EDX = (u32)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_byte(u8 s) +{ + u32 dvd, div, mod; + + dvd = M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u8)s; + mod = dvd % (u8)s; + if (abs(div) > 0xff) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (u8)div; + M.x86.R_AH = (u8)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_word(u16 s) +{ + u32 dvd, div, mod; + + dvd = (((u32)M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u16)s; + mod = dvd % (u16)s; + if (abs(div) > 0xffff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + set_parity_flag(mod); + + M.x86.R_AX = (u16)div; + M.x86.R_DX = (u16)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 dvd, div, mod; + + dvd = (((u64)M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u32)s; + mod = dvd % (u32)s; + if (abs(div) > 0xffffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + + u32 h_s = s; + u32 l_s = 0; + int counter = 32; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = s << (--counter); + continue; + } else { + h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (h_dvd || (l_dvd > s)) { + x86emu_intr_raise(0); + return; + } + mod = l_dvd; +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + set_parity_flag(mod); + + M.x86.R_EAX = (u32)div; + M.x86.R_EDX = (u32)mod; +} + +/**************************************************************************** +REMARKS: +Implements the IN string instruction and side effects. +****************************************************************************/ + +static void single_in(int size) +{ + if(size == 1) + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inb)(M.x86.R_DX)); + else if (size == 2) + store_data_word_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inw)(M.x86.R_DX)); + else + store_data_long_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inl)(M.x86.R_DX)); +} + +void ins(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* in until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + + while (count--) { + single_in(size); + M.x86.R_DI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + single_in(size); + M.x86.R_DI += inc; + } +} + +/**************************************************************************** +REMARKS: +Implements the OUT string instruction and side effects. +****************************************************************************/ + +static void single_out(int size) +{ + if(size == 1) + (*sys_outb)(M.x86.R_DX,fetch_data_byte_abs(M.x86.R_ES, M.x86.R_SI)); + else if (size == 2) + (*sys_outw)(M.x86.R_DX,fetch_data_word_abs(M.x86.R_ES, M.x86.R_SI)); + else + (*sys_outl)(M.x86.R_DX,fetch_data_long_abs(M.x86.R_ES, M.x86.R_SI)); +} + +void outs(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* out until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + while (count--) { + single_out(size); + M.x86.R_SI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + single_out(size); + M.x86.R_SI += inc; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Address to fetch word from + +REMARKS: +Fetches a word from emulator memory using an absolute address. +****************************************************************************/ +u16 mem_access_word(int addr) +{ +DB( if (CHECK_MEM_ACCESS()) + x86emu_check_mem_access(addr);) + return (*sys_rdw)(addr); +} + +/**************************************************************************** +REMARKS: +Pushes a word onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void push_word(u16 w) +{ +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 2; + (*sys_wrw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pushes a long onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void push_long(u32 w) +{ +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 4; + (*sys_wrl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pops a word from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u16 pop_word(void) +{ + u16 res; + +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 2; + return res; +} + +/**************************************************************************** +REMARKS: +Pops a long from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u32 pop_long(void) +{ + u32 res; + +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 4; + return res; +} + diff --git a/drivers/bios_emulator/x86emu/sys.c b/drivers/bios_emulator/x86emu/sys.c new file mode 100644 index 0000000..bb7fcd9 --- /dev/null +++ b/drivers/bios_emulator/x86emu/sys.c @@ -0,0 +1,322 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* programmed I/O and memory access. Included in this module +* are default functions that do nothing. For real uses these +* functions will have to be overriden by the user library. +* +****************************************************************************/ + +#include "x86emu/x86emui.h" + +/*------------------------- Global Variables ------------------------------*/ + +X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */ +X86EMU_intrFuncs _X86EMU_intrTab[256]; + +int debug_intr; + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Byte value read from emulator memory. + +REMARKS: +Reads a byte value from the emulator memory. +****************************************************************************/ +u8 X86API rdb(u32 addr) +{ + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Word value read from emulator memory. + +REMARKS: +Reads a word value from the emulator memory. +****************************************************************************/ +u16 X86API rdw(u32 addr) +{ + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Long value read from emulator memory. +REMARKS: +Reads a long value from the emulator memory. +****************************************************************************/ +u32 X86API rdl(u32 addr) +{ + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a byte value to emulator memory. +****************************************************************************/ +void X86API wrb(u32 addr, u8 val) +{ +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a word value to emulator memory. +****************************************************************************/ +void X86API wrw(u32 addr, u16 val) +{ +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a long value to emulator memory. +****************************************************************************/ +void X86API wrl(u32 addr, u32 val) +{ +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO byte read function. Doesn't perform real inb. +****************************************************************************/ +static u8 X86API p_inb(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inb %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO word read function. Doesn't perform real inw. +****************************************************************************/ +static u16 X86API p_inw(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inw %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO long read function. Doesn't perform real inl. +****************************************************************************/ +static u32 X86API p_inl(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printk("inl %#04x \n", addr);) + return 0; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO byte write function. Doesn't perform real outb. +****************************************************************************/ +static void X86API p_outb(X86EMU_pioAddr addr, u8 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outb %#02x -> %#04x \n", val, addr);) + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO word write function. Doesn't perform real outw. +****************************************************************************/ +static void X86API p_outw(X86EMU_pioAddr addr, u16 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outw %#04x -> %#04x \n", val, addr);) + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO ;ong write function. Doesn't perform real outl. +****************************************************************************/ +static void X86API p_outl(X86EMU_pioAddr addr, u32 val) +{ + DB(if (DEBUG_IO_TRACE()) + printk("outl %#08x -> %#04x \n", val, addr);) + return; +} + +/*------------------------- Global Variables ------------------------------*/ + +u8(X86APIP sys_rdb) (u32 addr) = rdb; +u16(X86APIP sys_rdw) (u32 addr) = rdw; +u32(X86APIP sys_rdl) (u32 addr) = rdl; +void (X86APIP sys_wrb) (u32 addr, u8 val) = wrb; +void (X86APIP sys_wrw) (u32 addr, u16 val) = wrw; +void (X86APIP sys_wrl) (u32 addr, u32 val) = wrl; +u8(X86APIP sys_inb) (X86EMU_pioAddr addr) = p_inb; +u16(X86APIP sys_inw) (X86EMU_pioAddr addr) = p_inw; +u32(X86APIP sys_inl) (X86EMU_pioAddr addr) = p_inl; +void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val) = p_outb; +void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val) = p_outw; +void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val) = p_outl; + +/*----------------------------- Setup -------------------------------------*/ + +/**************************************************************************** +PARAMETERS: +funcs - New memory function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +memory space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs) +{ + sys_rdb = funcs->rdb; + sys_rdw = funcs->rdw; + sys_rdl = funcs->rdl; + sys_wrb = funcs->wrb; + sys_wrw = funcs->wrw; + sys_wrl = funcs->wrl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New programmed I/O function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +I/O space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs) +{ + sys_inb = funcs->inb; + sys_inw = funcs->inw; + sys_inl = funcs->inl; + sys_outb = funcs->outb; + sys_outw = funcs->outw; + sys_outl = funcs->outl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New interrupt vector table to make active + +REMARKS: +This function is used to set the pointers to functions which handle +interrupt processing in the emulator, allowing the user application to +hook interrupts as necessary for their application. Any interrupts that +are not hooked by the user application, and reflected and handled internally +in the emulator via the interrupt vector table. This allows the application +to get control when the code being emulated executes specific software +interrupts. +****************************************************************************/ +void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]) +{ + int i; + + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = NULL; + if (funcs) { + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = funcs[i]; + } +} + +/**************************************************************************** +PARAMETERS: +int - New software interrupt to prepare for + +REMARKS: +This function is used to set up the emulator state to exceute a software +interrupt. This can be used by the user application code to allow an +interrupt to be hooked, examined and then reflected back to the emulator +so that the code in the emulator will continue processing the software +interrupt as per normal. This essentially allows system code to actively +hook and handle certain software interrupts as necessary. +****************************************************************************/ +void X86EMU_prepareForInt(int num) +{ + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(num * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(num * 4); + M.x86.intr = 0; +} -- cgit v1.1 From 9c7e4b06214db61bb21f1bcbe57c97519669baae Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Mon, 6 Aug 2007 02:17:36 +0200 Subject: Coding style cleanup. Update CHANGELOG. Signed-off-by: Wolfgang Denk --- drivers/bios_emulator/atibios.c | 48 +- drivers/bios_emulator/besys.c | 243 +- drivers/bios_emulator/biosemu.c | 84 +- drivers/bios_emulator/biosemui.h | 58 +- drivers/bios_emulator/include/x86emu/debug.h | 166 +- drivers/bios_emulator/include/x86emu/prim_ops.h | 1 - drivers/bios_emulator/include/x86emu/regs.h | 148 +- drivers/bios_emulator/x86emu/decode.c | 874 +++-- drivers/bios_emulator/x86emu/ops.c | 4610 +++++++++++------------ drivers/bios_emulator/x86emu/ops2.c | 1874 ++++----- drivers/bios_emulator/x86emu/prim_ops.c | 1389 ++++--- 11 files changed, 4743 insertions(+), 4752 deletions(-) (limited to 'drivers/bios_emulator') diff --git a/drivers/bios_emulator/atibios.c b/drivers/bios_emulator/atibios.c index 084339c..5779f99 100644 --- a/drivers/bios_emulator/atibios.c +++ b/drivers/bios_emulator/atibios.c @@ -1,6 +1,6 @@ /**************************************************************************** * -* Video BOOT Graphics Card POST Module +* Video BOOT Graphics Card POST Module * * ======================================================================== * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. @@ -30,20 +30,20 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Linux Kernel -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Linux Kernel +* Developer: Kendall Bennett * -* Description: Module to implement booting PCI/AGP controllers on the -* bus. We use the x86 real mode emulator to run the BIOS on -* graphics controllers to bring the cards up. +* Description: Module to implement booting PCI/AGP controllers on the +* bus. We use the x86 real mode emulator to run the BIOS on +* graphics controllers to bring the cards up. * -* Note that at present this module does *not* support -* multiple controllers. +* Note that at present this module does *not* support +* multiple controllers. * -* The orignal name of this file is warmboot.c. -* Jason ported this file to u-boot to run the ATI video card -* BIOS in u-boot. +* The orignal name of this file is warmboot.c. +* Jason ported this file to u-boot to run the ATI video card +* BIOS in u-boot. ****************************************************************************/ #include @@ -53,11 +53,11 @@ #include /* Length of the BIOS image */ -#define MAX_BIOSLEN (128 * 1024L) +#define MAX_BIOSLEN (128 * 1024L) /* Define some useful types and macros */ -#define true 1 -#define false 0 +#define true 1 +#define false 0 /* Place to save PCI BAR's that we change and later restore */ static u32 saveROMBaseAddress; @@ -68,7 +68,7 @@ static u32 saveBaseAddress20; /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus to boot +pcidev - PCI device info for the video card on the bus to boot VGAInfo - BIOS emulator VGA info structure REMARKS: @@ -102,8 +102,8 @@ static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo * VGAInfo) /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus -bar - Place to return the base address register offset to use +pcidev - PCI device info for the video card on the bus +bar - Place to return the base address register offset to use RETURNS: The address to use to map the secondary BIOS (AGP devices) @@ -166,7 +166,7 @@ static void PCI_fixupIObase(pci_dev_t pcidev, int reg, u32 * base) /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus +pcidev - PCI device info for the video card on the bus RETURNS: Pointers to the mapped BIOS image @@ -196,7 +196,7 @@ void *PCI_mapBIOSImage(pci_dev_t pcidev) /* Some cards have problems that stop us from being able to read the BIOS image from the ROM BAR. To fix this we have to do some chipset specific programming for different cards to solve this problem. - */ + */ if ((BIOSImagePhys = PCI_findBIOSAddr(pcidev, &BIOSImageBAR)) == 0) { printf("Find bios addr error\n"); @@ -223,7 +223,7 @@ void *PCI_mapBIOSImage(pci_dev_t pcidev) /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus +pcidev - PCI device info for the video card on the bus REMARKS: Unmaps the BIOS image for the device and restores framebuffer mappings @@ -239,7 +239,7 @@ void PCI_unmapBIOSImage(pci_dev_t pcidev, void *BIOSImage) /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus to boot +pcidev - PCI device info for the video card on the bus to boot VGAInfo - BIOS emulator VGA info structure RETURNS: @@ -294,9 +294,9 @@ static int PCI_postController(pci_dev_t pcidev, BE_VGAInfo * VGAInfo) /**************************************************************************** PARAMETERS: -pcidev - PCI device info for the video card on the bus to boot +pcidev - PCI device info for the video card on the bus to boot pVGAInfo - Place to return VGA info structure is requested -cleanUp - True to clean up on exit, false to leave emulator active +cleanUp - True to clean up on exit, false to leave emulator active REMARKS: Boots the PCI/AGP video card on the bus using the Video ROM BIOS image diff --git a/drivers/bios_emulator/besys.c b/drivers/bios_emulator/besys.c index 894012f..2a8e1a0 100644 --- a/drivers/bios_emulator/besys.c +++ b/drivers/bios_emulator/besys.c @@ -251,71 +251,69 @@ hardware does not support mapping the VGA I/O and memory (such as some PowerPC systems), we emulate the VGA so that the BIOS will still be able to set NonVGA display modes such as on ATI hardware. ****************************************************************************/ -static u8 VGA_inpb( - const int port) +static u8 VGA_inpb (const int port) { - u8 val = 0xff; - - switch (port) { - case 0x3C0: - /* 3C0 has funky characteristics because it can act as either - a data register or index register depending on the state - of an internal flip flop in the hardware. Hence we have - to emulate that functionality in here. */ - if (_BE_env.flipFlop3C0 == 0) { - /* Access 3C0 as index register*/ - val = _BE_env.emu3C0; - } - else { - /* Access 3C0 as data register*/ - if (_BE_env.emu3C0 < ATT_C) - val = _BE_env.emu3C1[_BE_env.emu3C0]; - } - _BE_env.flipFlop3C0 ^= 1; - break; - case 0x3C1: - if (_BE_env.emu3C0 < ATT_C) - return _BE_env.emu3C1[_BE_env.emu3C0]; - break; - case 0x3CC: - return _BE_env.emu3C2; - case 0x3C4: - return _BE_env.emu3C4; - case 0x3C5: - if (_BE_env.emu3C4 < ATT_C) - return _BE_env.emu3C5[_BE_env.emu3C4]; - break; - case 0x3C6: - return _BE_env.emu3C6; - case 0x3C7: - return _BE_env.emu3C7; - case 0x3C8: - return _BE_env.emu3C8; - case 0x3C9: - if (_BE_env.emu3C7 < PAL_C) - return _BE_env.emu3C9[_BE_env.emu3C7++]; - break; - case 0x3CE: - return _BE_env.emu3CE; - case 0x3CF: - if (_BE_env.emu3CE < GRA_C) - return _BE_env.emu3CF[_BE_env.emu3CE]; - break; - case 0x3D4: - if (_BE_env.emu3C2 & 0x1) - return _BE_env.emu3D4; - break; - case 0x3D5: - if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) - return _BE_env.emu3D5[_BE_env.emu3D4]; - break; - case 0x3DA: - _BE_env.flipFlop3C0 = 0; - val = _BE_env.emu3DA; - _BE_env.emu3DA ^= 0x9; - break; - } - return val; + u8 val = 0xff; + + switch (port) { + case 0x3C0: + /* 3C0 has funky characteristics because it can act as either + a data register or index register depending on the state + of an internal flip flop in the hardware. Hence we have + to emulate that functionality in here. */ + if (_BE_env.flipFlop3C0 == 0) { + /* Access 3C0 as index register */ + val = _BE_env.emu3C0; + } else { + /* Access 3C0 as data register */ + if (_BE_env.emu3C0 < ATT_C) + val = _BE_env.emu3C1[_BE_env.emu3C0]; + } + _BE_env.flipFlop3C0 ^= 1; + break; + case 0x3C1: + if (_BE_env.emu3C0 < ATT_C) + return _BE_env.emu3C1[_BE_env.emu3C0]; + break; + case 0x3CC: + return _BE_env.emu3C2; + case 0x3C4: + return _BE_env.emu3C4; + case 0x3C5: + if (_BE_env.emu3C4 < ATT_C) + return _BE_env.emu3C5[_BE_env.emu3C4]; + break; + case 0x3C6: + return _BE_env.emu3C6; + case 0x3C7: + return _BE_env.emu3C7; + case 0x3C8: + return _BE_env.emu3C8; + case 0x3C9: + if (_BE_env.emu3C7 < PAL_C) + return _BE_env.emu3C9[_BE_env.emu3C7++]; + break; + case 0x3CE: + return _BE_env.emu3CE; + case 0x3CF: + if (_BE_env.emu3CE < GRA_C) + return _BE_env.emu3CF[_BE_env.emu3CE]; + break; + case 0x3D4: + if (_BE_env.emu3C2 & 0x1) + return _BE_env.emu3D4; + break; + case 0x3D5: + if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) + return _BE_env.emu3D5[_BE_env.emu3D4]; + break; + case 0x3DA: + _BE_env.flipFlop3C0 = 0; + val = _BE_env.emu3DA; + _BE_env.emu3DA ^= 0x9; + break; + } + return val; } /**************************************************************************** @@ -328,66 +326,65 @@ Performs an emulated write to one of the 8253 timer registers. For now we only emulate timer 0 which is the only timer that the BIOS code appears to use. ****************************************************************************/ -static void VGA_outpb( - int port, - u8 val) +static void VGA_outpb (int port, u8 val) { - switch (port) { - case 0x3C0: - /* 3C0 has funky characteristics because it can act as either - a data register or index register depending on the state - of an internal flip flop in the hardware. Hence we have - to emulate that functionality in here.*/ - if (_BE_env.flipFlop3C0 == 0) { - /* Access 3C0 as index register*/ - _BE_env.emu3C0 = val; - } - else { - /* Access 3C0 as data register*/ - if (_BE_env.emu3C0 < ATT_C) - _BE_env.emu3C1[_BE_env.emu3C0] = val; - } - _BE_env.flipFlop3C0 ^= 1; - break; - case 0x3C2: - _BE_env.emu3C2 = val; - break; - case 0x3C4: - _BE_env.emu3C4 = val; - break; - case 0x3C5: - if (_BE_env.emu3C4 < ATT_C) - _BE_env.emu3C5[_BE_env.emu3C4] = val; - break; - case 0x3C6: - _BE_env.emu3C6 = val; - break; - case 0x3C7: - _BE_env.emu3C7 = (int)val * 3; - break; - case 0x3C8: - _BE_env.emu3C8 = (int)val * 3; - break; - case 0x3C9: - if (_BE_env.emu3C8 < PAL_C) - _BE_env.emu3C9[_BE_env.emu3C8++] = val; - break; - case 0x3CE: - _BE_env.emu3CE = val; - break; - case 0x3CF: - if (_BE_env.emu3CE < GRA_C) - _BE_env.emu3CF[_BE_env.emu3CE] = val; - break; - case 0x3D4: - if (_BE_env.emu3C2 & 0x1) - _BE_env.emu3D4 = val; - break; - case 0x3D5: - if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) - _BE_env.emu3D5[_BE_env.emu3D4] = val; - break; - } + switch (port) { + case 0x3C0: + /* 3C0 has funky characteristics because it can act as either + a data register or index register depending on the state + of an internal flip flop in the hardware. Hence we have + to emulate that functionality in here. */ + if (_BE_env.flipFlop3C0 == 0) { + /* Access 3C0 as index register */ + _BE_env.emu3C0 = val; + } else { + /* Access 3C0 as data register */ + if (_BE_env.emu3C0 < ATT_C) + _BE_env.emu3C1[_BE_env.emu3C0] = val; + } + _BE_env.flipFlop3C0 ^= 1; + break; + case 0x3C2: + _BE_env.emu3C2 = val; + break; + case 0x3C4: + _BE_env.emu3C4 = val; + break; + case 0x3C5: + if (_BE_env.emu3C4 < ATT_C) + _BE_env.emu3C5[_BE_env.emu3C4] = val; + break; + case 0x3C6: + _BE_env.emu3C6 = val; + break; + case 0x3C7: + _BE_env.emu3C7 = (int) val *3; + + break; + case 0x3C8: + _BE_env.emu3C8 = (int) val *3; + + break; + case 0x3C9: + if (_BE_env.emu3C8 < PAL_C) + _BE_env.emu3C9[_BE_env.emu3C8++] = val; + break; + case 0x3CE: + _BE_env.emu3CE = val; + break; + case 0x3CF: + if (_BE_env.emu3CE < GRA_C) + _BE_env.emu3CF[_BE_env.emu3CE] = val; + break; + case 0x3D4: + if (_BE_env.emu3C2 & 0x1) + _BE_env.emu3D4 = val; + break; + case 0x3D5: + if ((_BE_env.emu3C2 & 0x1) && (_BE_env.emu3D4 < CRT_C)) + _BE_env.emu3D5[_BE_env.emu3D4] = val; + break; + } } /**************************************************************************** diff --git a/drivers/bios_emulator/biosemu.c b/drivers/bios_emulator/biosemu.c index aca594c..06d4ad3 100644 --- a/drivers/bios_emulator/biosemu.c +++ b/drivers/bios_emulator/biosemu.c @@ -1,12 +1,12 @@ /**************************************************************************** * -* BIOS emulator and interface -* to Realmode X86 Emulator Library +* BIOS emulator and interface +* to Realmode X86 Emulator Library * * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. * Jason Jin * -* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) 1996-1999 SciTech Software, Inc. * * ======================================================================== * @@ -16,7 +16,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -30,18 +30,18 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: Module implementing the system specific functions. This -* module is always compiled and linked in the OS depedent -* libraries, and never in a binary portable driver. +* Description: Module implementing the system specific functions. This +* module is always compiled and linked in the OS depedent +* libraries, and never in a binary portable driver. * -* Jason ported this file to u-boot to run the ATI video card BIOS -* in u-boot. Made all the video memory be emulated during the -* BIOS runing process which may affect the VGA function but the -* frambuffer function can work after run the BIOS. +* Jason ported this file to u-boot to run the ATI video card BIOS +* in u-boot. Made all the video memory be emulated during the +* BIOS runing process which may affect the VGA function but the +* frambuffer function can work after run the BIOS. * ****************************************************************************/ @@ -67,14 +67,14 @@ static X86EMU_pioFuncs _BE_pio __attribute__((section(".got2"))) = { BE_outl, }; -#define OFF(addr) (u16)(((addr) >> 0) & 0xffff) -#define SEG(addr) (u16)(((addr) >> 4) & 0xf000) +#define OFF(addr) (u16)(((addr) >> 0) & 0xffff) +#define SEG(addr) (u16)(((addr) >> 4) & 0xf000) /**************************************************************************** PARAMETERS: debugFlags - Flags to enable debugging options (debug builds only) -memSize - Amount of memory to allocate for real mode machine -info - Pointer to default VGA device information +memSize - Amount of memory to allocate for real mode machine +info - Pointer to default VGA device information REMARKS: This functions initialises the BElib, and uses the passed in @@ -116,7 +116,7 @@ int X86API BE_init(u32 debugFlags, int memSize, BE_VGAInfo * info, int shared) /**************************************************************************** PARAMETERS: -info - Pointer to VGA device information to make current +info - Pointer to VGA device information to make current REMARKS: This function sets the VGA BIOS functions in the emulator to point to the @@ -150,7 +150,7 @@ void X86API BE_setVGA(BE_VGAInfo * info) /**************************************************************************** PARAMETERS: -info - Pointer to VGA device information to retrieve current +info - Pointer to VGA device information to retrieve current REMARKS: This function returns the VGA BIOS functions currently active in the @@ -172,16 +172,16 @@ void X86API BE_getVGA(BE_VGAInfo * info) /**************************************************************************** PARAMETERS: -r_seg - Segment for pointer to convert -r_off - Offset for pointer to convert +r_seg - Segment for pointer to convert +r_off - Offset for pointer to convert REMARKS: This function maps a real mode pointer in the emulator memory to a protected mode pointer that can be used to directly access the memory. -NOTE: The memory is *always* in little endian format, son on non-x86 - systems you will need to do endian translations to access this - memory. +NOTE: The memory is *always* in little endian format, son on non-x86 + systems you will need to do endian translations to access this + memory. ****************************************************************************/ void *X86API BE_mapRealPointer(uint r_seg, uint r_off) { @@ -197,9 +197,9 @@ void *X86API BE_mapRealPointer(uint r_seg, uint r_off) /**************************************************************************** PARAMETERS: -len - Return the length of the VESA buffer -rseg - Place to store VESA buffer segment -roff - Place to store VESA buffer offset +len - Return the length of the VESA buffer +rseg - Place to store VESA buffer segment +roff - Place to store VESA buffer offset REMARKS: This function returns the address of the VESA transfer buffer in real @@ -207,9 +207,9 @@ _BE_piomode emulator memory. The VESA transfer buffer is always 1024 bytes long, and located at 15Kb into the start of the real mode memory (16Kb is where we put the real mode code we execute for issuing interrupts). -NOTE: The memory is *always* in little endian format, son on non-x86 - systems you will need to do endian translations to access this - memory. +NOTE: The memory is *always* in little endian format, son on non-x86 + systems you will need to do endian translations to access this + memory. ****************************************************************************/ void *X86API BE_getVESABuf(uint * len, uint * rseg, uint * roff) { @@ -231,10 +231,10 @@ void X86API BE_exit(void) /**************************************************************************** PARAMETERS: -seg - Segment of code to call -off - Offset of code to call -regs - Real mode registers to load -sregs - Real mode segment registers to load +seg - Segment of code to call +off - Offset of code to call +regs - Real mode registers to load +sregs - Real mode segment registers to load REMARKS: This functions calls a real mode far function at the specified address, @@ -284,9 +284,9 @@ void X86API BE_callRealMode(uint seg, uint off, RMREGS * regs, RMSREGS * sregs) /**************************************************************************** PARAMETERS: -intno - Interrupt number to execute -in - Real mode registers to load -out - Place to store resulting real mode registers +intno - Interrupt number to execute +in - Real mode registers to load +out - Place to store resulting real mode registers REMARKS: This functions calls a real mode interrupt function at the specified address, @@ -323,10 +323,10 @@ int X86API BE_int86(int intno, RMREGS * in, RMREGS * out) /**************************************************************************** PARAMETERS: -intno - Interrupt number to execute -in - Real mode registers to load -out - Place to store resulting real mode registers -sregs - Real mode segment registers to load +intno - Interrupt number to execute +in - Real mode registers to load +out - Place to store resulting real mode registers +sregs - Real mode segment registers to load REMARKS: This functions calls a real mode interrupt function at the specified address, diff --git a/drivers/bios_emulator/biosemui.h b/drivers/bios_emulator/biosemui.h index 3265ac1..e85e656 100644 --- a/drivers/bios_emulator/biosemui.h +++ b/drivers/bios_emulator/biosemui.h @@ -1,12 +1,12 @@ /**************************************************************************** * -* BIOS emulator and interface -* to Realmode X86 Emulator Library +* BIOS emulator and interface +* to Realmode X86 Emulator Library * * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. * Jason Jin * -* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) 1996-1999 SciTech Software, Inc. * * ======================================================================== * @@ -16,7 +16,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -30,14 +30,14 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: Internal header file for the BIOS emulator library. +* Description: Internal header file for the BIOS emulator library. * -* Jason ported this file to u-boot, Added some architecture -* related Macro. +* Jason ported this file to u-boot, Added some architecture +* related Macro. * ****************************************************************************/ @@ -49,14 +49,14 @@ /*---------------------- Macros and type definitions ----------------------*/ #ifdef DEBUG -#define DB(x) x +#define DB(x) x #else -#define DB(x) do{}while(0); +#define DB(x) do{}while(0); #endif -#define BIOS_SEG 0xfff0 +#define BIOS_SEG 0xfff0 extern X86EMU_sysEnv _X86EMU_env; -#define M _X86EMU_env +#define M _X86EMU_env /* Macros to read and write values to x86 emulator memory. Memory is always * considered to be little endian, so we use macros to do endian swapping @@ -64,21 +64,21 @@ extern X86EMU_sysEnv _X86EMU_env; */ #ifdef __BIG_ENDIAN__ -#define readb_le(base) *((u8*)(base)) -#define readw_le(base) ((u16)readb_le(base) | ((u16)readb_le((base) + 1) << 8)) -#define readl_le(base) ((u32)readb_le((base) + 0) | ((u32)readb_le((base) + 1) << 8) | \ - ((u32)readb_le((base) + 2) << 16) | ((u32)readb_le((base) + 3) << 24)) +#define readb_le(base) *((u8*)(base)) +#define readw_le(base) ((u16)readb_le(base) | ((u16)readb_le((base) + 1) << 8)) +#define readl_le(base) ((u32)readb_le((base) + 0) | ((u32)readb_le((base) + 1) << 8) | \ + ((u32)readb_le((base) + 2) << 16) | ((u32)readb_le((base) + 3) << 24)) #define writeb_le(base, v) *((u8*)(base)) = (v) -#define writew_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ - writeb_le(base + 1, (v >> 8) & 0xff) -#define writel_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ - writeb_le(base + 1, (v >> 8) & 0xff), \ - writeb_le(base + 2, (v >> 16) & 0xff), \ - writeb_le(base + 3, (v >> 24) & 0xff) +#define writew_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ + writeb_le(base + 1, (v >> 8) & 0xff) +#define writel_le(base, v) writeb_le(base + 0, (v >> 0) & 0xff), \ + writeb_le(base + 1, (v >> 8) & 0xff), \ + writeb_le(base + 2, (v >> 16) & 0xff), \ + writeb_le(base + 3, (v >> 24) & 0xff) #else -#define readb_le(base) *((u8*)(base)) -#define readw_le(base) *((u16*)(base)) -#define readl_le(base) *((u32*)(base)) +#define readb_le(base) *((u8*)(base)) +#define readw_le(base) *((u16*)(base)) +#define readl_le(base) *((u32*)(base)) #define writeb_le(base, v) *((u8*)(base)) = (v) #define writew_le(base, v) *((u16*)(base)) = (v) #define writel_le(base, v) *((u32*)(base)) = (v) @@ -118,8 +118,8 @@ HEADER: biosemu.h MEMBERS: -type - Type of port access (1 = byte, 2 = word, 3 = dword) -defVal - Default power on value +type - Type of port access (1 = byte, 2 = word, 3 = dword) +defVal - Default power on value finalVal - Final value ****************************************************************************/ typedef struct { diff --git a/drivers/bios_emulator/include/x86emu/debug.h b/drivers/bios_emulator/include/x86emu/debug.h index 35e1e9a..268c9d3 100644 --- a/drivers/bios_emulator/include/x86emu/debug.h +++ b/drivers/bios_emulator/include/x86emu/debug.h @@ -1,10 +1,10 @@ /**************************************************************************** * -* Realmode X86 Emulator Library +* Realmode X86 Emulator Library * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -14,7 +14,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -28,11 +28,11 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: Header file for debug definitions. +* Description: Header file for debug definitions. * ****************************************************************************/ @@ -43,16 +43,16 @@ /* checks to be enabled for "runtime" */ -#define CHECK_IP_FETCH_F 0x1 -#define CHECK_SP_ACCESS_F 0x2 -#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */ -#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset */ +#define CHECK_IP_FETCH_F 0x1 +#define CHECK_SP_ACCESS_F 0x2 +#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */ +#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset */ #ifdef DEBUG -# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F) -# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F) -# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F) -# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F) +# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F) +# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F) +# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F) +# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F) #else # define CHECK_IP_FETCH() # define CHECK_SP_ACCESS() @@ -61,50 +61,50 @@ #endif #ifdef DEBUG -# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F) -# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F) -# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F) -# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F) -# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F) -# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F) -# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F) -# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_CS_IP) - -# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F) -# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F) -# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F) -# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F) -# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F) -# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F) -# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F) -# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F) +# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F) +# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F) +# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F) +# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F) +# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F) +# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F) +# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F) +# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_CS_IP) + +# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F) +# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F) +# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F) +# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F) +# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F) +# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F) +# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F) +# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F) # define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F) #else -# define DEBUG_INSTRUMENT() 0 -# define DEBUG_DECODE() 0 -# define DEBUG_TRACE() 0 -# define DEBUG_STEP() 0 -# define DEBUG_DISASSEMBLE() 0 -# define DEBUG_BREAK() 0 -# define DEBUG_SVC() 0 -# define DEBUG_SAVE_IP_CS() 0 -# define DEBUG_FS() 0 -# define DEBUG_PROC() 0 -# define DEBUG_SYSINT() 0 -# define DEBUG_TRACECALL() 0 -# define DEBUG_TRACECALLREGS() 0 -# define DEBUG_SYS() 0 -# define DEBUG_MEM_TRACE() 0 -# define DEBUG_IO_TRACE() 0 +# define DEBUG_INSTRUMENT() 0 +# define DEBUG_DECODE() 0 +# define DEBUG_TRACE() 0 +# define DEBUG_STEP() 0 +# define DEBUG_DISASSEMBLE() 0 +# define DEBUG_BREAK() 0 +# define DEBUG_SVC() 0 +# define DEBUG_SAVE_IP_CS() 0 +# define DEBUG_FS() 0 +# define DEBUG_PROC() 0 +# define DEBUG_SYSINT() 0 +# define DEBUG_TRACECALL() 0 +# define DEBUG_TRACECALLREGS() 0 +# define DEBUG_SYS() 0 +# define DEBUG_MEM_TRACE() 0 +# define DEBUG_IO_TRACE() 0 # define DEBUG_DECODE_NOPRINT() 0 #endif #ifdef DEBUG -# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \ - x86emu_decode_printf(x) -# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \ - x86emu_decode_printf2(x,y) +# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \ + x86emu_decode_printf(x) +# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \ + x86emu_decode_printf2(x,y) /* * The following allow us to look at the bytes of an instruction. The @@ -112,15 +112,15 @@ * the decoding process. The SAVE_IP_CS is called initially when the * major opcode of the instruction is accessed. */ -#define INC_DECODED_INST_LEN(x) \ - if (DEBUG_DECODE()) \ - x86emu_inc_decoded_inst_len(x) +#define INC_DECODED_INST_LEN(x) \ + if (DEBUG_DECODE()) \ + x86emu_inc_decoded_inst_len(x) -#define SAVE_IP_CS(x,y) \ +#define SAVE_IP_CS(x,y) \ if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \ - | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \ - M.x86.saved_cs = x; \ - M.x86.saved_ip = y; \ + | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \ + M.x86.saved_cs = x; \ + M.x86.saved_ip = y; \ } #else # define INC_DECODED_INST_LEN(x) @@ -130,29 +130,29 @@ #endif #ifdef DEBUG -#define TRACE_REGS() \ - if (DEBUG_DISASSEMBLE()) { \ - x86emu_just_disassemble(); \ - goto EndOfTheInstructionProcedure; \ - } \ +#define TRACE_REGS() \ + if (DEBUG_DISASSEMBLE()) { \ + x86emu_just_disassemble(); \ + goto EndOfTheInstructionProcedure; \ + } \ if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs() #else # define TRACE_REGS() #endif #ifdef DEBUG -# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step() +# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step() #else # define SINGLE_STEP() #endif #define TRACE_AND_STEP() \ - TRACE_REGS(); \ + TRACE_REGS(); \ SINGLE_STEP() #ifdef DEBUG # define START_OF_INSTR() -# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr(); +# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr(); # define END_OF_INSTR_NO_TRACE() x86emu_end_instr(); #else # define START_OF_INSTR() @@ -161,30 +161,30 @@ #endif #ifdef DEBUG -# define CALL_TRACE(u,v,w,x,s) \ - if (DEBUG_TRACECALLREGS()) \ - x86emu_dump_regs(); \ - if (DEBUG_TRACECALL()) \ - printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x); -# define RETURN_TRACE(n,u,v) \ - if (DEBUG_TRACECALLREGS()) \ - x86emu_dump_regs(); \ - if (DEBUG_TRACECALL()) \ - printk("%04x:%04x: %s\n",u,v,n); +# define CALL_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x); +# define RETURN_TRACE(n,u,v) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printk("%04x:%04x: %s\n",u,v,n); #else # define CALL_TRACE(u,v,w,x,s) # define RETURN_TRACE(n,u,v) #endif #ifdef DEBUG -#define DB(x) x +#define DB(x) x #else #define DB(x) #endif /*-------------------------- Function Prototypes --------------------------*/ -#ifdef __cplusplus +#ifdef __cplusplus extern "C" { /* Use "C" linkage when in C++ mode */ #endif @@ -203,7 +203,7 @@ extern "C" { /* Use "C" linkage when in C++ mode */ extern void x86emu_check_mem_access(u32 p); extern void x86emu_check_data_access(uint s, uint o); -#ifdef __cplusplus -} /* End of "C" linkage for C++ */ +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ #endif #endif /* __X86EMU_DEBUG_H */ diff --git a/drivers/bios_emulator/include/x86emu/prim_ops.h b/drivers/bios_emulator/include/x86emu/prim_ops.h index 0ea825d..2291e84 100644 --- a/drivers/bios_emulator/include/x86emu/prim_ops.h +++ b/drivers/bios_emulator/include/x86emu/prim_ops.h @@ -139,4 +139,3 @@ u32 pop_long (void); #endif #endif /* __X86EMU_PRIM_OPS_H */ - diff --git a/drivers/bios_emulator/include/x86emu/regs.h b/drivers/bios_emulator/include/x86emu/regs.h index 9dbed50..a7fedd2 100644 --- a/drivers/bios_emulator/include/x86emu/regs.h +++ b/drivers/bios_emulator/include/x86emu/regs.h @@ -1,10 +1,10 @@ /**************************************************************************** * -* Realmode X86 Emulator Library +* Realmode X86 Emulator Library * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -14,7 +14,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -28,11 +28,11 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: Header file for x86 register definitions. +* Description: Header file for x86 register definitions. * ****************************************************************************/ @@ -54,11 +54,11 @@ * EAX & 0xff === AL * EAX & 0xffff == AX * - * etc. The result is that alot of the calculations can then be + * etc. The result is that alot of the calculations can then be * done using the native instruction set fully. */ -#ifdef __BIG_ENDIAN__ +#ifdef __BIG_ENDIAN__ typedef struct { u32 e_reg; @@ -178,7 +178,7 @@ struct i386_segment_regs { /* flag conditions */ #define FB_CF 0x0001 /* CARRY flag */ #define FB_PF 0x0004 /* PARITY flag */ -#define FB_AF 0x0010 /* AUX flag */ +#define FB_AF 0x0010 /* AUX flag */ #define FB_ZF 0x0040 /* ZERO flag */ #define FB_SF 0x0080 /* SIGN flag */ #define FB_TF 0x0100 /* TRAP flag */ @@ -199,7 +199,7 @@ struct i386_segment_regs { #define F_CF 0x0001 /* CARRY flag */ #define F_PF 0x0004 /* PARITY flag */ -#define F_AF 0x0010 /* AUX flag */ +#define F_AF 0x0010 /* AUX flag */ #define F_ZF 0x0040 /* ZERO flag */ #define F_SF 0x0080 /* SIGN flag */ #define F_TF 0x0100 /* TRAP flag */ @@ -207,60 +207,60 @@ struct i386_segment_regs { #define F_DF 0x0400 /* DIR flag */ #define F_OF 0x0800 /* OVERFLOW flag */ -#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag)) -#define SET_FLAG(flag) (M.x86.R_FLG |= (flag)) -#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag)) -#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag)) -#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0) +#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag)) +#define SET_FLAG(flag) (M.x86.R_FLG |= (flag)) +#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag)) +#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag)) +#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0) #define CONDITIONAL_SET_FLAG(COND,FLAG) \ if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG) -#define F_PF_CALC 0x010000 /* PARITY flag has been calced */ -#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ -#define F_SF_CALC 0x040000 /* SIGN flag has been calced */ +#define F_PF_CALC 0x010000 /* PARITY flag has been calced */ +#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ +#define F_SF_CALC 0x040000 /* SIGN flag has been calced */ -#define F_ALL_CALC 0xff0000 /* All have been calced */ +#define F_ALL_CALC 0xff0000 /* All have been calced */ /* * Emulator machine state. * Segment usage control. */ -#define SYSMODE_SEG_DS_SS 0x00000001 -#define SYSMODE_SEGOVR_CS 0x00000002 -#define SYSMODE_SEGOVR_DS 0x00000004 -#define SYSMODE_SEGOVR_ES 0x00000008 -#define SYSMODE_SEGOVR_FS 0x00000010 -#define SYSMODE_SEGOVR_GS 0x00000020 -#define SYSMODE_SEGOVR_SS 0x00000040 -#define SYSMODE_PREFIX_REPE 0x00000080 -#define SYSMODE_PREFIX_REPNE 0x00000100 -#define SYSMODE_PREFIX_DATA 0x00000200 -#define SYSMODE_PREFIX_ADDR 0x00000400 -#define SYSMODE_INTR_PENDING 0x10000000 -#define SYSMODE_EXTRN_INTR 0x20000000 -#define SYSMODE_HALTED 0x40000000 - -#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ - SYSMODE_SEGOVR_CS | \ - SYSMODE_SEGOVR_DS | \ - SYSMODE_SEGOVR_ES | \ - SYSMODE_SEGOVR_FS | \ - SYSMODE_SEGOVR_GS | \ - SYSMODE_SEGOVR_SS) -#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ - SYSMODE_SEGOVR_CS | \ - SYSMODE_SEGOVR_DS | \ - SYSMODE_SEGOVR_ES | \ - SYSMODE_SEGOVR_FS | \ - SYSMODE_SEGOVR_GS | \ - SYSMODE_SEGOVR_SS | \ - SYSMODE_PREFIX_DATA | \ - SYSMODE_PREFIX_ADDR) - -#define INTR_SYNCH 0x1 -#define INTR_ASYNCH 0x2 -#define INTR_HALTED 0x4 +#define SYSMODE_SEG_DS_SS 0x00000001 +#define SYSMODE_SEGOVR_CS 0x00000002 +#define SYSMODE_SEGOVR_DS 0x00000004 +#define SYSMODE_SEGOVR_ES 0x00000008 +#define SYSMODE_SEGOVR_FS 0x00000010 +#define SYSMODE_SEGOVR_GS 0x00000020 +#define SYSMODE_SEGOVR_SS 0x00000040 +#define SYSMODE_PREFIX_REPE 0x00000080 +#define SYSMODE_PREFIX_REPNE 0x00000100 +#define SYSMODE_PREFIX_DATA 0x00000200 +#define SYSMODE_PREFIX_ADDR 0x00000400 +#define SYSMODE_INTR_PENDING 0x10000000 +#define SYSMODE_EXTRN_INTR 0x20000000 +#define SYSMODE_HALTED 0x40000000 + +#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS) +#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS | \ + SYSMODE_PREFIX_DATA | \ + SYSMODE_PREFIX_ADDR) + +#define INTR_SYNCH 0x1 +#define INTR_ASYNCH 0x2 +#define INTR_HALTED 0x4 typedef struct { struct i386_general_regs gen; @@ -268,15 +268,15 @@ typedef struct { struct i386_segment_regs seg; /* * MODE contains information on: - * REPE prefix 2 bits repe,repne - * SEGMENT overrides 5 bits normal,DS,SS,CS,ES - * Delayed flag set 3 bits (zero, signed, parity) - * reserved 6 bits - * interrupt # 8 bits instruction raised interrupt - * BIOS video segregs 4 bits - * Interrupt Pending 1 bits - * Extern interrupt 1 bits - * Halted 1 bits + * REPE prefix 2 bits repe,repne + * SEGMENT overrides 5 bits normal,DS,SS,CS,ES + * Delayed flag set 3 bits (zero, signed, parity) + * reserved 6 bits + * interrupt # 8 bits instruction raised interrupt + * BIOS video segregs 4 bits + * Interrupt Pending 1 bits + * Extern interrupt 1 bits + * Halted 1 bits */ long mode; u8 intno; @@ -288,7 +288,7 @@ typedef struct { u16 saved_cs; int enc_pos; int enc_str_pos; - char decode_buf[32]; /* encoded byte stream */ + char decode_buf[32]; /* encoded byte stream */ char decoded_buf[256]; /* disassembled strings */ #endif } X86EMU_regs; @@ -298,9 +298,9 @@ REMARKS: Structure maintaining the emulator machine state. MEMBERS: -x86 - X86 registers -mem_base - Base real mode memory for the emulator -mem_size - Size of the real mode memory block for the emulator +x86 - X86 registers +mem_base - Base real mode memory for the emulator +mem_size - Size of the real mode memory block for the emulator ****************************************************************************/ #undef x86 typedef struct { @@ -314,7 +314,7 @@ typedef struct { /*----------------------------- Global Variables --------------------------*/ -#ifdef __cplusplus +#ifdef __cplusplus extern "C" { /* Use "C" linkage when in C++ mode */ #endif @@ -324,7 +324,7 @@ extern "C" { /* Use "C" linkage when in C++ mode */ */ extern X86EMU_sysEnv _X86EMU_env; -#define M _X86EMU_env +#define M _X86EMU_env /*-------------------------- Function Prototypes --------------------------*/ @@ -334,7 +334,7 @@ extern "C" { /* Use "C" linkage when in C++ mode */ void printk(const char *fmt, ...); #endif -#ifdef __cplusplus -} /* End of "C" linkage for C++ */ +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ #endif #endif /* __X86EMU_REGS_H */ diff --git a/drivers/bios_emulator/x86emu/decode.c b/drivers/bios_emulator/x86emu/decode.c index b4dbb20..1e2dcfe 100644 --- a/drivers/bios_emulator/x86emu/decode.c +++ b/drivers/bios_emulator/x86emu/decode.c @@ -1,10 +1,10 @@ /**************************************************************************** * -* Realmode X86 Emulator Library +* Realmode X86 Emulator Library * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -14,7 +14,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -28,12 +28,12 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: This file includes subroutines which are related to -* instruction decoding and accessess of immediate data via IP. etc. +* Description: This file includes subroutines which are related to +* instruction decoding and accessess of immediate data via IP. etc. * ****************************************************************************/ @@ -47,22 +47,22 @@ Handles any pending asychronous interrupts. ****************************************************************************/ static void x86emu_intr_handle(void) { - u8 intno; + u8 intno; if (M.x86.intr & INTR_SYNCH) { - intno = M.x86.intno; - if (_X86EMU_intrTab[intno]) { - (*_X86EMU_intrTab[intno])(intno); - } else { - push_word((u16)M.x86.R_FLG); - CLEAR_FLAG(F_IF); - CLEAR_FLAG(F_TF); - push_word(M.x86.R_CS); - M.x86.R_CS = mem_access_word(intno * 4 + 2); - push_word(M.x86.R_IP); - M.x86.R_IP = mem_access_word(intno * 4); - M.x86.intr = 0; - } + intno = M.x86.intno; + if (_X86EMU_intrTab[intno]) { + (*_X86EMU_intrTab[intno])(intno); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intno * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intno * 4); + M.x86.intr = 0; + } } } @@ -95,34 +95,34 @@ void X86EMU_exec(void) DB(x86emu_end_instr();) for (;;) { -DB( if (CHECK_IP_FETCH()) - x86emu_check_ip_access();) - /* If debugging, save the IP and CS values. */ - SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP); - INC_DECODED_INST_LEN(1); - if (M.x86.intr) { - if (M.x86.intr & INTR_HALTED) { -DB( if (M.x86.R_SP != 0) { - printk("halted\n"); - X86EMU_trace_regs(); - } - else { - if (M.x86.debug) - printk("Service completed successfully\n"); - }) - return; - } - if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) || - !ACCESS_FLAG(F_IF)) { - x86emu_intr_handle(); - } - } - op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); - (*x86emu_optab[op1])(op1); - if (M.x86.debug & DEBUG_EXIT) { - M.x86.debug &= ~DEBUG_EXIT; - return; - } +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + /* If debugging, save the IP and CS values. */ + SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP); + INC_DECODED_INST_LEN(1); + if (M.x86.intr) { + if (M.x86.intr & INTR_HALTED) { +DB( if (M.x86.R_SP != 0) { + printk("halted\n"); + X86EMU_trace_regs(); + } + else { + if (M.x86.debug) + printk("Service completed successfully\n"); + }) + return; + } + if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) || + !ACCESS_FLAG(F_IF)) { + x86emu_intr_handle(); + } + } + op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + (*x86emu_optab[op1])(op1); + if (M.x86.debug & DEBUG_EXIT) { + M.x86.debug &= ~DEBUG_EXIT; + return; + } } } @@ -137,9 +137,9 @@ void X86EMU_halt_sys(void) /**************************************************************************** PARAMETERS: -mod - Mod value from decoded byte -regh - Reg h value from decoded byte -regl - Reg l value from decoded byte +mod - Mod value from decoded byte +regh - Reg h value from decoded byte +regl - Reg l value from decoded byte REMARKS: Raise the specified interrupt to be handled before the execution of the @@ -155,7 +155,7 @@ void fetch_decode_modrm( int fetched; DB( if (CHECK_IP_FETCH()) - x86emu_check_ip_access();) + x86emu_check_ip_access();) fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); INC_DECODED_INST_LEN(1); *mod = (fetched >> 6) & 0x03; @@ -178,7 +178,7 @@ u8 fetch_byte_imm(void) u8 fetched; DB( if (CHECK_IP_FETCH()) - x86emu_check_ip_access();) + x86emu_check_ip_access();) fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); INC_DECODED_INST_LEN(1); return fetched; @@ -199,7 +199,7 @@ u16 fetch_word_imm(void) u16 fetched; DB( if (CHECK_IP_FETCH()) - x86emu_check_ip_access();) + x86emu_check_ip_access();) fetched = (*sys_rdw)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); M.x86.R_IP += 2; INC_DECODED_INST_LEN(2); @@ -221,7 +221,7 @@ u32 fetch_long_imm(void) u32 fetched; DB( if (CHECK_IP_FETCH()) - x86emu_check_ip_access();) + x86emu_check_ip_access();) fetched = (*sys_rdl)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); M.x86.R_IP += 4; INC_DECODED_INST_LEN(4); @@ -261,39 +261,39 @@ _INLINE u32 get_data_segment(void) { #define GET_SEGMENT(segment) switch (M.x86.mode & SYSMODE_SEGMASK) { - case 0: /* default case: use ds register */ + case 0: /* default case: use ds register */ case SYSMODE_SEGOVR_DS: case SYSMODE_SEGOVR_DS | SYSMODE_SEG_DS_SS: - return M.x86.R_DS; - case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */ - return M.x86.R_SS; + return M.x86.R_DS; + case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */ + return M.x86.R_SS; case SYSMODE_SEGOVR_CS: case SYSMODE_SEGOVR_CS | SYSMODE_SEG_DS_SS: - return M.x86.R_CS; + return M.x86.R_CS; case SYSMODE_SEGOVR_ES: case SYSMODE_SEGOVR_ES | SYSMODE_SEG_DS_SS: - return M.x86.R_ES; + return M.x86.R_ES; case SYSMODE_SEGOVR_FS: case SYSMODE_SEGOVR_FS | SYSMODE_SEG_DS_SS: - return M.x86.R_FS; + return M.x86.R_FS; case SYSMODE_SEGOVR_GS: case SYSMODE_SEGOVR_GS | SYSMODE_SEG_DS_SS: - return M.x86.R_GS; + return M.x86.R_GS; case SYSMODE_SEGOVR_SS: case SYSMODE_SEGOVR_SS | SYSMODE_SEG_DS_SS: - return M.x86.R_SS; + return M.x86.R_SS; default: -#ifdef DEBUG - printk("error: should not happen: multiple overrides.\n"); +#ifdef DEBUG + printk("error: should not happen: multiple overrides.\n"); #endif - HALT_SYS(); - return 0; + HALT_SYS(); + return 0; } } /**************************************************************************** PARAMETERS: -offset - Offset to load data from +offset - Offset to load data from RETURNS: Byte value read from the absolute memory location. @@ -305,14 +305,14 @@ u8 fetch_data_byte( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif return (*sys_rdb)((get_data_segment() << 4) + offset); } /**************************************************************************** PARAMETERS: -offset - Offset to load data from +offset - Offset to load data from RETURNS: Word value read from the absolute memory location. @@ -324,14 +324,14 @@ u16 fetch_data_word( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif return (*sys_rdw)((get_data_segment() << 4) + offset); } /**************************************************************************** PARAMETERS: -offset - Offset to load data from +offset - Offset to load data from RETURNS: Long value read from the absolute memory location. @@ -343,7 +343,7 @@ u32 fetch_data_long( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif return (*sys_rdl)((get_data_segment() << 4) + offset); } @@ -351,7 +351,7 @@ u32 fetch_data_long( /**************************************************************************** PARAMETERS: segment - Segment to load data from -offset - Offset to load data from +offset - Offset to load data from RETURNS: Byte value read from the absolute memory location. @@ -364,7 +364,7 @@ u8 fetch_data_byte_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif return (*sys_rdb)(((u32)segment << 4) + offset); } @@ -372,7 +372,7 @@ u8 fetch_data_byte_abs( /**************************************************************************** PARAMETERS: segment - Segment to load data from -offset - Offset to load data from +offset - Offset to load data from RETURNS: Word value read from the absolute memory location. @@ -385,7 +385,7 @@ u16 fetch_data_word_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif return (*sys_rdw)(((u32)segment << 4) + offset); } @@ -393,7 +393,7 @@ u16 fetch_data_word_abs( /**************************************************************************** PARAMETERS: segment - Segment to load data from -offset - Offset to load data from +offset - Offset to load data from RETURNS: Long value read from the absolute memory location. @@ -406,15 +406,15 @@ u32 fetch_data_long_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif return (*sys_rdl)(((u32)segment << 4) + offset); } /**************************************************************************** PARAMETERS: -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a word value to an segmented memory location. The segment used is @@ -428,15 +428,15 @@ void store_data_byte( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif (*sys_wrb)((get_data_segment() << 4) + offset, val); } /**************************************************************************** PARAMETERS: -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a word value to an segmented memory location. The segment used is @@ -450,15 +450,15 @@ void store_data_word( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif (*sys_wrw)((get_data_segment() << 4) + offset, val); } /**************************************************************************** PARAMETERS: -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a long value to an segmented memory location. The segment used is @@ -472,7 +472,7 @@ void store_data_long( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access((u16)get_data_segment(), offset); + x86emu_check_data_access((u16)get_data_segment(), offset); #endif (*sys_wrl)((get_data_segment() << 4) + offset, val); } @@ -480,8 +480,8 @@ void store_data_long( /**************************************************************************** PARAMETERS: segment - Segment to store data at -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a byte value to an absolute memory location. @@ -495,7 +495,7 @@ void store_data_byte_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif (*sys_wrb)(((u32)segment << 4) + offset, val); } @@ -503,8 +503,8 @@ void store_data_byte_abs( /**************************************************************************** PARAMETERS: segment - Segment to store data at -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a word value to an absolute memory location. @@ -518,7 +518,7 @@ void store_data_word_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif (*sys_wrw)(((u32)segment << 4) + offset, val); } @@ -526,8 +526,8 @@ void store_data_word_abs( /**************************************************************************** PARAMETERS: segment - Segment to store data at -offset - Offset to store data at -val - Value to store +offset - Offset to store data at +val - Value to store REMARKS: Writes a long value to an absolute memory location. @@ -541,7 +541,7 @@ void store_data_long_abs( { #ifdef DEBUG if (CHECK_DATA_ACCESS()) - x86emu_check_data_access(segment, offset); + x86emu_check_data_access(segment, offset); #endif (*sys_wrl)(((u32)segment << 4) + offset, val); } @@ -562,32 +562,32 @@ u8* decode_rm_byte_register( { switch (reg) { case 0: - DECODE_PRINTF("AL"); - return &M.x86.R_AL; + DECODE_PRINTF("AL"); + return &M.x86.R_AL; case 1: - DECODE_PRINTF("CL"); - return &M.x86.R_CL; + DECODE_PRINTF("CL"); + return &M.x86.R_CL; case 2: - DECODE_PRINTF("DL"); - return &M.x86.R_DL; + DECODE_PRINTF("DL"); + return &M.x86.R_DL; case 3: - DECODE_PRINTF("BL"); - return &M.x86.R_BL; + DECODE_PRINTF("BL"); + return &M.x86.R_BL; case 4: - DECODE_PRINTF("AH"); - return &M.x86.R_AH; + DECODE_PRINTF("AH"); + return &M.x86.R_AH; case 5: - DECODE_PRINTF("CH"); - return &M.x86.R_CH; + DECODE_PRINTF("CH"); + return &M.x86.R_CH; case 6: - DECODE_PRINTF("DH"); - return &M.x86.R_DH; + DECODE_PRINTF("DH"); + return &M.x86.R_DH; case 7: - DECODE_PRINTF("BH"); - return &M.x86.R_BH; + DECODE_PRINTF("BH"); + return &M.x86.R_BH; } HALT_SYS(); - return NULL; /* NOT REACHED OR REACHED ON ERROR */ + return NULL; /* NOT REACHED OR REACHED ON ERROR */ } /**************************************************************************** @@ -599,39 +599,39 @@ Pointer to the appropriate register REMARKS: Return a pointer to the register given by the R/RM field of the -modrm byte, for word operands. Also enables the decoding of instructions. +modrm byte, for word operands. Also enables the decoding of instructions. ****************************************************************************/ u16* decode_rm_word_register( int reg) { switch (reg) { case 0: - DECODE_PRINTF("AX"); - return &M.x86.R_AX; + DECODE_PRINTF("AX"); + return &M.x86.R_AX; case 1: - DECODE_PRINTF("CX"); - return &M.x86.R_CX; + DECODE_PRINTF("CX"); + return &M.x86.R_CX; case 2: - DECODE_PRINTF("DX"); - return &M.x86.R_DX; + DECODE_PRINTF("DX"); + return &M.x86.R_DX; case 3: - DECODE_PRINTF("BX"); - return &M.x86.R_BX; + DECODE_PRINTF("BX"); + return &M.x86.R_BX; case 4: - DECODE_PRINTF("SP"); - return &M.x86.R_SP; + DECODE_PRINTF("SP"); + return &M.x86.R_SP; case 5: - DECODE_PRINTF("BP"); - return &M.x86.R_BP; + DECODE_PRINTF("BP"); + return &M.x86.R_BP; case 6: - DECODE_PRINTF("SI"); - return &M.x86.R_SI; + DECODE_PRINTF("SI"); + return &M.x86.R_SI; case 7: - DECODE_PRINTF("DI"); - return &M.x86.R_DI; + DECODE_PRINTF("DI"); + return &M.x86.R_DI; } HALT_SYS(); - return NULL; /* NOTREACHED OR REACHED ON ERROR */ + return NULL; /* NOTREACHED OR REACHED ON ERROR */ } /**************************************************************************** @@ -643,39 +643,39 @@ Pointer to the appropriate register REMARKS: Return a pointer to the register given by the R/RM field of the -modrm byte, for dword operands. Also enables the decoding of instructions. +modrm byte, for dword operands. Also enables the decoding of instructions. ****************************************************************************/ u32* decode_rm_long_register( int reg) { switch (reg) { case 0: - DECODE_PRINTF("EAX"); - return &M.x86.R_EAX; + DECODE_PRINTF("EAX"); + return &M.x86.R_EAX; case 1: - DECODE_PRINTF("ECX"); - return &M.x86.R_ECX; + DECODE_PRINTF("ECX"); + return &M.x86.R_ECX; case 2: - DECODE_PRINTF("EDX"); - return &M.x86.R_EDX; + DECODE_PRINTF("EDX"); + return &M.x86.R_EDX; case 3: - DECODE_PRINTF("EBX"); - return &M.x86.R_EBX; + DECODE_PRINTF("EBX"); + return &M.x86.R_EBX; case 4: - DECODE_PRINTF("ESP"); - return &M.x86.R_ESP; + DECODE_PRINTF("ESP"); + return &M.x86.R_ESP; case 5: - DECODE_PRINTF("EBP"); - return &M.x86.R_EBP; + DECODE_PRINTF("EBP"); + return &M.x86.R_EBP; case 6: - DECODE_PRINTF("ESI"); - return &M.x86.R_ESI; + DECODE_PRINTF("ESI"); + return &M.x86.R_ESI; case 7: - DECODE_PRINTF("EDI"); - return &M.x86.R_EDI; + DECODE_PRINTF("EDI"); + return &M.x86.R_EDI; } HALT_SYS(); - return NULL; /* NOTREACHED OR REACHED ON ERROR */ + return NULL; /* NOTREACHED OR REACHED ON ERROR */ } /**************************************************************************** @@ -695,30 +695,30 @@ u16* decode_rm_seg_register( { switch (reg) { case 0: - DECODE_PRINTF("ES"); - return &M.x86.R_ES; + DECODE_PRINTF("ES"); + return &M.x86.R_ES; case 1: - DECODE_PRINTF("CS"); - return &M.x86.R_CS; + DECODE_PRINTF("CS"); + return &M.x86.R_CS; case 2: - DECODE_PRINTF("SS"); - return &M.x86.R_SS; + DECODE_PRINTF("SS"); + return &M.x86.R_SS; case 3: - DECODE_PRINTF("DS"); - return &M.x86.R_DS; + DECODE_PRINTF("DS"); + return &M.x86.R_DS; case 4: - DECODE_PRINTF("FS"); - return &M.x86.R_FS; + DECODE_PRINTF("FS"); + return &M.x86.R_FS; case 5: - DECODE_PRINTF("GS"); - return &M.x86.R_GS; + DECODE_PRINTF("GS"); + return &M.x86.R_GS; case 6: case 7: - DECODE_PRINTF("ILLEGAL SEGREG"); - break; + DECODE_PRINTF("ILLEGAL SEGREG"); + break; } HALT_SYS(); - return NULL; /* NOT REACHED OR REACHED ON ERROR */ + return NULL; /* NOT REACHED OR REACHED ON ERROR */ } /**************************************************************************** @@ -739,38 +739,38 @@ unsigned decode_sib_si( { scale = 1 << scale; if (scale > 1) { - DECODE_PRINTF2("[%d*", scale); + DECODE_PRINTF2("[%d*", scale); } else { - DECODE_PRINTF("["); + DECODE_PRINTF("["); } switch (index) { case 0: - DECODE_PRINTF("EAX]"); - return M.x86.R_EAX * index; + DECODE_PRINTF("EAX]"); + return M.x86.R_EAX * index; case 1: - DECODE_PRINTF("ECX]"); - return M.x86.R_ECX * index; + DECODE_PRINTF("ECX]"); + return M.x86.R_ECX * index; case 2: - DECODE_PRINTF("EDX]"); - return M.x86.R_EDX * index; + DECODE_PRINTF("EDX]"); + return M.x86.R_EDX * index; case 3: - DECODE_PRINTF("EBX]"); - return M.x86.R_EBX * index; + DECODE_PRINTF("EBX]"); + return M.x86.R_EBX * index; case 4: - DECODE_PRINTF("0]"); - return 0; + DECODE_PRINTF("0]"); + return 0; case 5: - DECODE_PRINTF("EBP]"); - return M.x86.R_EBP * index; + DECODE_PRINTF("EBP]"); + return M.x86.R_EBP * index; case 6: - DECODE_PRINTF("ESI]"); - return M.x86.R_ESI * index; + DECODE_PRINTF("ESI]"); + return M.x86.R_ESI * index; case 7: - DECODE_PRINTF("EDI]"); - return M.x86.R_EDI * index; + DECODE_PRINTF("EDI]"); + return M.x86.R_EDI * index; } HALT_SYS(); - return 0; /* NOT REACHED OR REACHED ON ERROR */ + return 0; /* NOT REACHED OR REACHED ON ERROR */ } /**************************************************************************** @@ -795,58 +795,58 @@ unsigned decode_sib_address( switch (base) { case 0: - DECODE_PRINTF("[EAX]"); - offset = M.x86.R_EAX; - break; + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; case 1: - DECODE_PRINTF("[ECX]"); - offset = M.x86.R_ECX; - break; + DECODE_PRINTF("[ECX]"); + offset = M.x86.R_ECX; + break; case 2: - DECODE_PRINTF("[EDX]"); - offset = M.x86.R_EDX; - break; + DECODE_PRINTF("[EDX]"); + offset = M.x86.R_EDX; + break; case 3: - DECODE_PRINTF("[EBX]"); - offset = M.x86.R_EBX; - break; + DECODE_PRINTF("[EBX]"); + offset = M.x86.R_EBX; + break; case 4: - DECODE_PRINTF("[ESP]"); - offset = M.x86.R_ESP; - break; + DECODE_PRINTF("[ESP]"); + offset = M.x86.R_ESP; + break; case 5: - switch (mod) { - case 0: - displacement = (s32)fetch_long_imm(); - DECODE_PRINTF2("[%d]", displacement); - offset = displacement; - break; - case 1: - displacement = (s8)fetch_byte_imm(); - DECODE_PRINTF2("[%d][EBP]", displacement); - offset = M.x86.R_EBP + displacement; - break; - case 2: - displacement = (s32)fetch_long_imm(); - DECODE_PRINTF2("[%d][EBP]", displacement); - offset = M.x86.R_EBP + displacement; - break; - default: - HALT_SYS(); - } - DECODE_PRINTF("[EAX]"); - offset = M.x86.R_EAX; - break; + switch (mod) { + case 0: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + offset = displacement; + break; + case 1: + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + case 2: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + default: + HALT_SYS(); + } + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; case 6: - DECODE_PRINTF("[ESI]"); - offset = M.x86.R_ESI; - break; + DECODE_PRINTF("[ESI]"); + offset = M.x86.R_ESI; + break; case 7: - DECODE_PRINTF("[EDI]"); - offset = M.x86.R_EDI; - break; + DECODE_PRINTF("[EDI]"); + offset = M.x86.R_EDI; + break; default: - HALT_SYS(); + HALT_SYS(); } offset += decode_sib_si(ss, index); return offset; @@ -864,14 +864,14 @@ REMARKS: Return the offset given by mod=00 addressing. Also enables the decoding of instructions. -NOTE: The code which specifies the corresponding segment (ds vs ss) - below in the case of [BP+..]. The assumption here is that at the - point that this subroutine is called, the bit corresponding to - SYSMODE_SEG_DS_SS will be zero. After every instruction - except the segment override instructions, this bit (as well - as any bits indicating segment overrides) will be clear. So - if a SS access is needed, set this bit. Otherwise, DS access - occurs (unless any of the segment override bits are set). +NOTE: The code which specifies the corresponding segment (ds vs ss) + below in the case of [BP+..]. The assumption here is that at the + point that this subroutine is called, the bit corresponding to + SYSMODE_SEG_DS_SS will be zero. After every instruction + except the segment override instructions, this bit (as well + as any bits indicating segment overrides) will be clear. So + if a SS access is needed, set this bit. Otherwise, DS access + occurs (unless any of the segment override bits are set). ****************************************************************************/ unsigned decode_rm00_address( int rm) @@ -879,64 +879,64 @@ unsigned decode_rm00_address( unsigned offset; if (M.x86.mode & SYSMODE_PREFIX_ADDR) { - /* 32-bit addressing */ - switch (rm) { - case 0: - DECODE_PRINTF("[EAX]"); - return M.x86.R_EAX; - case 1: - DECODE_PRINTF("[ECX]"); - return M.x86.R_ECX; - case 2: - DECODE_PRINTF("[EDX]"); - return M.x86.R_EDX; - case 3: - DECODE_PRINTF("[EBX]"); - return M.x86.R_EBX; - case 4: - return decode_sib_address(0); - case 5: - offset = fetch_long_imm(); - DECODE_PRINTF2("[%08x]", offset); - return offset; - case 6: - DECODE_PRINTF("[ESI]"); - return M.x86.R_ESI; - case 7: - DECODE_PRINTF("[EDI]"); - return M.x86.R_EDI; - } + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[EAX]"); + return M.x86.R_EAX; + case 1: + DECODE_PRINTF("[ECX]"); + return M.x86.R_ECX; + case 2: + DECODE_PRINTF("[EDX]"); + return M.x86.R_EDX; + case 3: + DECODE_PRINTF("[EBX]"); + return M.x86.R_EBX; + case 4: + return decode_sib_address(0); + case 5: + offset = fetch_long_imm(); + DECODE_PRINTF2("[%08x]", offset); + return offset; + case 6: + DECODE_PRINTF("[ESI]"); + return M.x86.R_ESI; + case 7: + DECODE_PRINTF("[EDI]"); + return M.x86.R_EDI; + } } else { - /* 16-bit addressing */ - switch (rm) { - case 0: - DECODE_PRINTF("[BX+SI]"); - return (M.x86.R_BX + M.x86.R_SI) & 0xffff; - case 1: - DECODE_PRINTF("[BX+DI]"); - return (M.x86.R_BX + M.x86.R_DI) & 0xffff; - case 2: - DECODE_PRINTF("[BP+SI]"); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_SI) & 0xffff; - case 3: - DECODE_PRINTF("[BP+DI]"); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_DI) & 0xffff; - case 4: - DECODE_PRINTF("[SI]"); - return M.x86.R_SI; - case 5: - DECODE_PRINTF("[DI]"); - return M.x86.R_DI; - case 6: - offset = fetch_word_imm(); - DECODE_PRINTF2("[%04x]", offset); - return offset; - case 7: - DECODE_PRINTF("[BX]"); - return M.x86.R_BX; - } + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[BX+SI]"); + return (M.x86.R_BX + M.x86.R_SI) & 0xffff; + case 1: + DECODE_PRINTF("[BX+DI]"); + return (M.x86.R_BX + M.x86.R_DI) & 0xffff; + case 2: + DECODE_PRINTF("[BP+SI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI) & 0xffff; + case 3: + DECODE_PRINTF("[BP+DI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI) & 0xffff; + case 4: + DECODE_PRINTF("[SI]"); + return M.x86.R_SI; + case 5: + DECODE_PRINTF("[DI]"); + return M.x86.R_DI; + case 6: + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]", offset); + return offset; + case 7: + DECODE_PRINTF("[BX]"); + return M.x86.R_BX; + } } HALT_SYS(); return 0; @@ -959,76 +959,76 @@ unsigned decode_rm01_address( int displacement; if (M.x86.mode & SYSMODE_PREFIX_ADDR) { - /* 32-bit addressing */ - if (rm != 4) - displacement = (s8)fetch_byte_imm(); - else - displacement = 0; - - switch (rm) { - case 0: - DECODE_PRINTF2("%d[EAX]", displacement); - return M.x86.R_EAX + displacement; - case 1: - DECODE_PRINTF2("%d[ECX]", displacement); - return M.x86.R_ECX + displacement; - case 2: - DECODE_PRINTF2("%d[EDX]", displacement); - return M.x86.R_EDX + displacement; - case 3: - DECODE_PRINTF2("%d[EBX]", displacement); - return M.x86.R_EBX + displacement; - case 4: { - int offset = decode_sib_address(1); - displacement = (s8)fetch_byte_imm(); - DECODE_PRINTF2("[%d]", displacement); - return offset + displacement; - } - case 5: - DECODE_PRINTF2("%d[EBP]", displacement); - return M.x86.R_EBP + displacement; - case 6: - DECODE_PRINTF2("%d[ESI]", displacement); - return M.x86.R_ESI + displacement; - case 7: - DECODE_PRINTF2("%d[EDI]", displacement); - return M.x86.R_EDI + displacement; - } + /* 32-bit addressing */ + if (rm != 4) + displacement = (s8)fetch_byte_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(1); + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } } else { - /* 16-bit addressing */ - displacement = (s8)fetch_byte_imm(); - switch (rm) { - case 0: - DECODE_PRINTF2("%d[BX+SI]", displacement); - return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; - case 1: - DECODE_PRINTF2("%d[BX+DI]", displacement); - return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; - case 2: - DECODE_PRINTF2("%d[BP+SI]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; - case 3: - DECODE_PRINTF2("%d[BP+DI]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; - case 4: - DECODE_PRINTF2("%d[SI]", displacement); - return (M.x86.R_SI + displacement) & 0xffff; - case 5: - DECODE_PRINTF2("%d[DI]", displacement); - return (M.x86.R_DI + displacement) & 0xffff; - case 6: - DECODE_PRINTF2("%d[BP]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + displacement) & 0xffff; - case 7: - DECODE_PRINTF2("%d[BX]", displacement); - return (M.x86.R_BX + displacement) & 0xffff; - } + /* 16-bit addressing */ + displacement = (s8)fetch_byte_imm(); + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } } HALT_SYS(); - return 0; /* SHOULD NOT HAPPEN */ + return 0; /* SHOULD NOT HAPPEN */ } /**************************************************************************** @@ -1046,82 +1046,81 @@ unsigned decode_rm10_address( int rm) { if (M.x86.mode & SYSMODE_PREFIX_ADDR) { - int displacement; - - /* 32-bit addressing */ - if (rm != 4) - displacement = (s32)fetch_long_imm(); - else - displacement = 0; - - switch (rm) { - case 0: - DECODE_PRINTF2("%d[EAX]", displacement); - return M.x86.R_EAX + displacement; - case 1: - DECODE_PRINTF2("%d[ECX]", displacement); - return M.x86.R_ECX + displacement; - case 2: - DECODE_PRINTF2("%d[EDX]", displacement); - return M.x86.R_EDX + displacement; - case 3: - DECODE_PRINTF2("%d[EBX]", displacement); - return M.x86.R_EBX + displacement; - case 4: { - int offset = decode_sib_address(2); - displacement = (s32)fetch_long_imm(); - DECODE_PRINTF2("[%d]", displacement); - return offset + displacement; - } - case 5: - DECODE_PRINTF2("%d[EBP]", displacement); - return M.x86.R_EBP + displacement; - case 6: - DECODE_PRINTF2("%d[ESI]", displacement); - return M.x86.R_ESI + displacement; - case 7: - DECODE_PRINTF2("%d[EDI]", displacement); - return M.x86.R_EDI + displacement; - } + int displacement; + + /* 32-bit addressing */ + if (rm != 4) + displacement = (s32)fetch_long_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(2); + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } } else { - int displacement = (s16)fetch_word_imm(); - - /* 16-bit addressing */ - switch (rm) { - case 0: - DECODE_PRINTF2("%d[BX+SI]", displacement); - return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; - case 1: - DECODE_PRINTF2("%d[BX+DI]", displacement); - return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; - case 2: - DECODE_PRINTF2("%d[BP+SI]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; - case 3: - DECODE_PRINTF2("%d[BP+DI]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; - case 4: - DECODE_PRINTF2("%d[SI]", displacement); - return (M.x86.R_SI + displacement) & 0xffff; - case 5: - DECODE_PRINTF2("%d[DI]", displacement); - return (M.x86.R_DI + displacement) & 0xffff; - case 6: - DECODE_PRINTF2("%d[BP]", displacement); - M.x86.mode |= SYSMODE_SEG_DS_SS; - return (M.x86.R_BP + displacement) & 0xffff; - case 7: - DECODE_PRINTF2("%d[BX]", displacement); - return (M.x86.R_BX + displacement) & 0xffff; - } + int displacement = (s16)fetch_word_imm(); + + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } } HALT_SYS(); - return 0; /* SHOULD NOT HAPPEN */ + return 0; /* SHOULD NOT HAPPEN */ } - /**************************************************************************** PARAMETERS: mod - modifier @@ -1143,6 +1142,3 @@ unsigned decode_rmXX_address(int mod, int rm) return decode_rm01_address(rm); return decode_rm10_address(rm); } - - - diff --git a/drivers/bios_emulator/x86emu/ops.c b/drivers/bios_emulator/x86emu/ops.c index 632979d..d1380ce 100644 --- a/drivers/bios_emulator/x86emu/ops.c +++ b/drivers/bios_emulator/x86emu/ops.c @@ -4,9 +4,9 @@ * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. * Jason Jin * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -16,7 +16,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -32,13 +32,13 @@ * * Language: ANSI C * Environment: Any -* Developer: Kendall Bennett +* Developer: Kendall Bennett * -* Description: This file includes subroutines to implement the decoding -* and emulation of all the x86 processor instructions. +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 processor instructions. * * There are approximately 250 subroutines in here, which correspond -* to the 256 byte-"opcodes" found on the 8086. The table which +* to the 256 byte-"opcodes" found on the 8086. The table which * dispatches this is found in the files optab.[ch]. * * Each opcode proc has a comment preceeding it which gives it's table @@ -48,14 +48,14 @@ * DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc * functions (START_OF_INSTR, END_OF_INSTR). * -* Many of the procedures are *VERY* similar in coding. This has +* Many of the procedures are *VERY* similar in coding. This has * allowed for a very large amount of code to be generated in a fairly * short amount of time (i.e. cut, paste, and modify). The result is * that much of the code below could have been folded into subroutines * for a large reduction in size of this file. The downside would be * that there would be a penalty in execution speed. The file could * also have been *MUCH* larger by inlining certain functions which -* were called. This could have resulted even faster execution. The +* were called. This could have resulted even faster execution. The * prime directive I used to decide whether to inline the code or to * modularize it, was basically: 1) no unnecessary subroutine calls, * 2) no routines more than about 200 lines in size, and 3) modularize @@ -88,38 +88,38 @@ static char *x86emu_GenOpName[8] = { /* used by several opcodes */ static u8 (*genop_byte_operation[])(u8 d, u8 s) __attribute__ ((section(".got2"))) = { - add_byte, /* 00 */ - or_byte, /* 01 */ - adc_byte, /* 02 */ - sbb_byte, /* 03 */ - and_byte, /* 04 */ - sub_byte, /* 05 */ - xor_byte, /* 06 */ - cmp_byte, /* 07 */ + add_byte, /* 00 */ + or_byte, /* 01 */ + adc_byte, /* 02 */ + sbb_byte, /* 03 */ + and_byte, /* 04 */ + sub_byte, /* 05 */ + xor_byte, /* 06 */ + cmp_byte, /* 07 */ }; static u16 (*genop_word_operation[])(u16 d, u16 s) __attribute__ ((section(".got2"))) = { - add_word, /*00 */ - or_word, /*01 */ - adc_word, /*02 */ - sbb_word, /*03 */ - and_word, /*04 */ - sub_word, /*05 */ - xor_word, /*06 */ - cmp_word, /*07 */ + add_word, /*00 */ + or_word, /*01 */ + adc_word, /*02 */ + sbb_word, /*03 */ + and_word, /*04 */ + sub_word, /*05 */ + xor_word, /*06 */ + cmp_word, /*07 */ }; static u32 (*genop_long_operation[])(u32 d, u32 s) __attribute__ ((section(".got2"))) = { - add_long, /*00 */ - or_long, /*01 */ - adc_long, /*02 */ - sbb_long, /*03 */ - and_long, /*04 */ - sub_long, /*05 */ - xor_long, /*06 */ - cmp_long, /*07 */ + add_long, /*00 */ + or_long, /*01 */ + adc_long, /*02 */ + sbb_long, /*03 */ + and_long, /*04 */ + sub_long, /*05 */ + xor_long, /*06 */ + cmp_long, /*07 */ }; /* used by opcodes 80, c0, d0, and d2. */ @@ -131,7 +131,7 @@ static u8(*opcD0_byte_operation[])(u8 d, u8 s) __attribute__ ((section(".got2")) rcr_byte, shl_byte, shr_byte, - shl_byte, /* sal_byte === shl_byte by definition */ + shl_byte, /* sal_byte === shl_byte by definition */ sar_byte, }; @@ -144,7 +144,7 @@ static u16(*opcD1_word_operation[])(u16 s, u8 d) __attribute__ ((section(".got2" rcr_word, shl_word, shr_word, - shl_word, /* sal_byte === shl_byte by definition */ + shl_word, /* sal_byte === shl_byte by definition */ sar_word, }; @@ -157,7 +157,7 @@ static u32 (*opcD1_long_operation[])(u32 s, u8 d) __attribute__ ((section(".got2 rcr_long, shl_long, shr_long, - shl_long, /* sal_byte === shl_byte by definition */ + shl_long, /* sal_byte === shl_byte by definition */ sar_long, }; @@ -180,21 +180,21 @@ void x86emuOp_illegal_op( { START_OF_INSTR(); if (M.x86.R_SP != 0) { - DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); - TRACE_REGS(); - DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", - M.x86.R_CS, M.x86.R_IP-1,op1)); - HALT_SYS(); - } + DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); + TRACE_REGS(); + DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-1,op1)); + HALT_SYS(); + } else { - /* If we get here, it means the stack pointer is back to zero - * so we are just returning from an emulator service call - * so therte is no need to display an error message. We trap - * the emulator with an 0xF1 opcode to finish the service - * call. - */ - X86EMU_halt_sys(); - } + /* If we get here, it means the stack pointer is back to zero + * so we are just returning from an emulator service call + * so therte is no need to display an error message. We trap + * the emulator with an 0xF1 opcode to finish the service + * call. + */ + X86EMU_halt_sys(); + } END_OF_INSTR(); } @@ -216,24 +216,24 @@ void x86emuOp_genop_byte_RM_R(u8 op1) DECODE_PRINTF("\t"); FETCH_DECODE_MODRM(mod, rh, rl); if(mod<3) - { destoffset = decode_rmXX_address(mod,rl); - DECODE_PRINTF(","); - destval = fetch_data_byte(destoffset); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = genop_byte_operation[op1](destval, *srcreg); - store_data_byte(destoffset, destval); - } + { destoffset = decode_rmXX_address(mod,rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_byte_operation[op1](destval, *srcreg); + store_data_byte(destoffset, destval); + } else - { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = genop_byte_operation[op1](*destreg, *srcreg); - } + { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_byte_operation[op1](*destreg, *srcreg); + } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -255,50 +255,50 @@ void x86emuOp_genop_word_RM_R(u8 op1) FETCH_DECODE_MODRM(mod, rh, rl); if(mod<3) { - destoffset = decode_rmXX_address(mod,rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *srcreg; - - DECODE_PRINTF(","); - destval = fetch_data_long(destoffset); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = genop_long_operation[op1](destval, *srcreg); - store_data_long(destoffset, destval); - } else { - u16 destval; - u16 *srcreg; - - DECODE_PRINTF(","); - destval = fetch_data_word(destoffset); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = genop_word_operation[op1](destval, *srcreg); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = genop_long_operation[op1](*destreg, *srcreg); - } else { - u16 *destreg,*srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = genop_word_operation[op1](*destreg, *srcreg); - } + destoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_long_operation[op1](destval, *srcreg); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_word_operation[op1](destval, *srcreg); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_long_operation[op1](*destreg, *srcreg); + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -322,15 +322,15 @@ void x86emuOp_genop_byte_R_RM(u8 op1) DECODE_PRINTF("\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod,rl); - srcval = fetch_data_byte(srcoffset); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - srcval = *srcreg; + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod,rl); + srcval = fetch_data_byte(srcoffset); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + srcval = *srcreg; } DECODE_PRINTF("\n"); TRACE_AND_STEP(); @@ -358,40 +358,40 @@ void x86emuOp_genop_word_R_RM(u8 op1) DECODE_PRINTF("\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod,rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - destreg32 = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_long(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg32 = genop_long_operation[op1](*destreg32, srcval); - } else { - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_word(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = genop_word_operation[op1](*destreg, srcval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg; - destreg32 = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg32 = genop_long_operation[op1](*destreg32, *srcreg); - } else { - u16 *srcreg; - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = genop_word_operation[op1](*destreg, *srcreg); - } + srcoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, srcval); + } else { + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, srcval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, *srcreg); + } else { + u16 *srcreg; + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -430,20 +430,20 @@ void x86emuOp_genop_word_AX_IMM(u8 op1) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF(x86emu_GenOpName[op1]); - DECODE_PRINTF("\tEAX,"); - srcval = fetch_long_imm(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tEAX,"); + srcval = fetch_long_imm(); } else { - DECODE_PRINTF(x86emu_GenOpName[op1]); - DECODE_PRINTF("\tAX,"); - srcval = fetch_word_imm(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tAX,"); + srcval = fetch_word_imm(); } DECODE_PRINTF2("%x\n", srcval); TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EAX = genop_long_operation[op1](M.x86.R_EAX, srcval); + M.x86.R_EAX = genop_long_operation[op1](M.x86.R_EAX, srcval); } else { - M.x86.R_AX = genop_word_operation[op1](M.x86.R_AX, (u16)srcval); + M.x86.R_AX = genop_word_operation[op1](M.x86.R_AX, (u16)srcval); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -683,17 +683,17 @@ void x86emuOp_inc_register(u8 op1) op1 &= 0x7; DECODE_PRINTF("INC\t"); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg; - reg = DECODE_RM_LONG_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = inc_long(*reg); + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_long(*reg); } else { - u16 *reg; - reg = DECODE_RM_WORD_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = inc_word(*reg); + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_word(*reg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -709,17 +709,17 @@ void x86emuOp_dec_register(u8 op1) op1 &= 0x7; DECODE_PRINTF("DEC\t"); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg; - reg = DECODE_RM_LONG_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = dec_long(*reg); + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_long(*reg); } else { - u16 *reg; - reg = DECODE_RM_WORD_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = dec_word(*reg); + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_word(*reg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -735,17 +735,17 @@ void x86emuOp_push_register(u8 op1) op1 &= 0x7; DECODE_PRINTF("PUSH\t"); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg; - reg = DECODE_RM_LONG_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_long(*reg); + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*reg); } else { - u16 *reg; - reg = DECODE_RM_WORD_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_word(*reg); + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*reg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -761,17 +761,17 @@ void x86emuOp_pop_register(u8 op1) op1 &= 0x7; DECODE_PRINTF("POP\t"); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg; - reg = DECODE_RM_LONG_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = pop_long(); + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_long(); } else { - u16 *reg; - reg = DECODE_RM_WORD_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *reg = pop_word(); + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_word(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -785,33 +785,33 @@ void x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("PUSHAD\n"); + DECODE_PRINTF("PUSHAD\n"); } else { - DECODE_PRINTF("PUSHA\n"); + DECODE_PRINTF("PUSHA\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 old_sp = M.x86.R_ESP; - - push_long(M.x86.R_EAX); - push_long(M.x86.R_ECX); - push_long(M.x86.R_EDX); - push_long(M.x86.R_EBX); - push_long(old_sp); - push_long(M.x86.R_EBP); - push_long(M.x86.R_ESI); - push_long(M.x86.R_EDI); + u32 old_sp = M.x86.R_ESP; + + push_long(M.x86.R_EAX); + push_long(M.x86.R_ECX); + push_long(M.x86.R_EDX); + push_long(M.x86.R_EBX); + push_long(old_sp); + push_long(M.x86.R_EBP); + push_long(M.x86.R_ESI); + push_long(M.x86.R_EDI); } else { - u16 old_sp = M.x86.R_SP; - - push_word(M.x86.R_AX); - push_word(M.x86.R_CX); - push_word(M.x86.R_DX); - push_word(M.x86.R_BX); - push_word(old_sp); - push_word(M.x86.R_BP); - push_word(M.x86.R_SI); - push_word(M.x86.R_DI); + u16 old_sp = M.x86.R_SP; + + push_word(M.x86.R_AX); + push_word(M.x86.R_CX); + push_word(M.x86.R_DX); + push_word(M.x86.R_BX); + push_word(old_sp); + push_word(M.x86.R_BP); + push_word(M.x86.R_SI); + push_word(M.x86.R_DI); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -825,36 +825,36 @@ void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("POPAD\n"); + DECODE_PRINTF("POPAD\n"); } else { - DECODE_PRINTF("POPA\n"); + DECODE_PRINTF("POPA\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EDI = pop_long(); - M.x86.R_ESI = pop_long(); - M.x86.R_EBP = pop_long(); - M.x86.R_ESP += 4; /* skip ESP */ - M.x86.R_EBX = pop_long(); - M.x86.R_EDX = pop_long(); - M.x86.R_ECX = pop_long(); - M.x86.R_EAX = pop_long(); + M.x86.R_EDI = pop_long(); + M.x86.R_ESI = pop_long(); + M.x86.R_EBP = pop_long(); + M.x86.R_ESP += 4; /* skip ESP */ + M.x86.R_EBX = pop_long(); + M.x86.R_EDX = pop_long(); + M.x86.R_ECX = pop_long(); + M.x86.R_EAX = pop_long(); } else { - M.x86.R_DI = pop_word(); - M.x86.R_SI = pop_word(); - M.x86.R_BP = pop_word(); - M.x86.R_SP += 2; /* skip SP */ - M.x86.R_BX = pop_word(); - M.x86.R_DX = pop_word(); - M.x86.R_CX = pop_word(); - M.x86.R_AX = pop_word(); + M.x86.R_DI = pop_word(); + M.x86.R_SI = pop_word(); + M.x86.R_BP = pop_word(); + M.x86.R_SP += 2; /* skip SP */ + M.x86.R_BX = pop_word(); + M.x86.R_DX = pop_word(); + M.x86.R_CX = pop_word(); + M.x86.R_AX = pop_word(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } -/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ -/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ +/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ +/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ /**************************************************************************** REMARKS: @@ -928,16 +928,16 @@ void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - imm = fetch_long_imm(); + imm = fetch_long_imm(); } else { - imm = fetch_word_imm(); + imm = fetch_word_imm(); } DECODE_PRINTF2("PUSH\t%x\n", imm); TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - push_long(imm); + push_long(imm); } else { - push_word((u16)imm); + push_word((u16)imm); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -956,95 +956,95 @@ void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("IMUL\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - u32 res_lo,res_hi; - s32 imm; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_long(srcoffset); - imm = fetch_long_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); - if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || - (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg; - u16 srcval; - u32 res; - s16 imm; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_word(srcoffset); - imm = fetch_word_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - res = (s16)srcval * (s16)imm; - if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || - (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u16)res; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - u32 res_lo,res_hi; - s32 imm; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rl); - imm = fetch_long_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); - if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || - (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg,*srcreg; - u32 res; - s16 imm; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - imm = fetch_word_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - res = (s16)*srcreg * (s16)imm; - if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || - (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u16)res; - } + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1075,98 +1075,98 @@ void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) { int mod, rl, rh; uint srcoffset; - s8 imm; + s8 imm; START_OF_INSTR(); DECODE_PRINTF("IMUL\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - u32 res_lo,res_hi; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_long(srcoffset); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); - if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || - (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg; - u16 srcval; - u32 res; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcval = fetch_data_word(srcoffset); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - res = (s16)srcval * (s16)imm; - if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || - (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u16)res; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - u32 res_lo,res_hi; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rl); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); - if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || - (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg,*srcreg; - u32 res; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", (s32)imm); - TRACE_AND_STEP(); - res = (s16)*srcreg * (s16)imm; - if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || - (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } - *destreg = (u16)res; - } + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1194,11 +1194,11 @@ void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("INSD\n"); - ins(4); + DECODE_PRINTF("INSD\n"); + ins(4); } else { - DECODE_PRINTF("INSW\n"); - ins(2); + DECODE_PRINTF("INSW\n"); + ins(2); } TRACE_AND_STEP(); DECODE_CLEAR_SEGOVR(); @@ -1227,11 +1227,11 @@ void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("OUTSD\n"); - outs(4); + DECODE_PRINTF("OUTSD\n"); + outs(4); } else { - DECODE_PRINTF("OUTSW\n"); - outs(2); + DECODE_PRINTF("OUTSW\n"); + outs(2); } TRACE_AND_STEP(); DECODE_CLEAR_SEGOVR(); @@ -1258,7 +1258,7 @@ void x86emuOp_jump_near_cond(u8 op1) DECODE_PRINTF2("%x\n", target); TRACE_AND_STEP(); if (cond) - M.x86.R_IP = target; + M.x86.R_IP = target; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -1276,7 +1276,7 @@ void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) u8 destval; /* - * Weirdo special case instruction format. Part of the opcode + * Weirdo special case instruction format. Part of the opcode * held below in "RH". Doubly nested case would result, except * that the decoded instruction */ @@ -1284,61 +1284,61 @@ void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - DECODE_PRINTF("ADD\t"); - break; - case 1: - DECODE_PRINTF("OR\t"); - break; - case 2: - DECODE_PRINTF("ADC\t"); - break; - case 3: - DECODE_PRINTF("SBB\t"); - break; - case 4: - DECODE_PRINTF("AND\t"); - break; - case 5: - DECODE_PRINTF("SUB\t"); - break; - case 6: - DECODE_PRINTF("XOR\t"); - break; - case 7: - DECODE_PRINTF("CMP\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - destval = fetch_data_byte(destoffset); - imm = fetch_byte_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_byte_operation[rh]) (destval, imm); - if (rh != 7) - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(","); - imm = fetch_byte_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_byte_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1354,7 +1354,7 @@ void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) uint destoffset; /* - * Weirdo special case instruction format. Part of the opcode + * Weirdo special case instruction format. Part of the opcode * held below in "RH". Doubly nested case would result, except * that the decoded instruction */ @@ -1362,37 +1362,37 @@ void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - DECODE_PRINTF("ADD\t"); - break; - case 1: - DECODE_PRINTF("OR\t"); - break; - case 2: - DECODE_PRINTF("ADC\t"); - break; - case 3: - DECODE_PRINTF("SBB\t"); - break; - case 4: - DECODE_PRINTF("AND\t"); - break; - case 5: - DECODE_PRINTF("SUB\t"); - break; - case 6: - DECODE_PRINTF("XOR\t"); - break; - case 7: - DECODE_PRINTF("CMP\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } } #endif /* @@ -1400,57 +1400,57 @@ void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) * mode. */ if (mod < 3) { - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval,imm; - - DECODE_PRINTF(","); - destval = fetch_data_long(destoffset); - imm = fetch_long_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_long_operation[rh]) (destval, imm); - if (rh != 7) - store_data_long(destoffset, destval); - } else { - u16 destval,imm; - - DECODE_PRINTF(","); - destval = fetch_data_word(destoffset); - imm = fetch_word_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_word_operation[rh]) (destval, imm); - if (rh != 7) - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 destval,imm; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - imm = fetch_long_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_long_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; - } else { - u16 *destreg; - u16 destval,imm; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - imm = fetch_word_imm(); - DECODE_PRINTF2("%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_word_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; - } + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval,imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } else { + u16 *destreg; + u16 destval,imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1469,7 +1469,7 @@ void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) u8 destval; /* - * Weirdo special case instruction format. Part of the opcode + * Weirdo special case instruction format. Part of the opcode * held below in "RH". Doubly nested case would result, except * that the decoded instruction Similar to opcode 81, except that * the immediate byte is sign extended to a word length. @@ -1478,58 +1478,58 @@ void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - switch (rh) { - case 0: - DECODE_PRINTF("ADD\t"); - break; - case 1: - DECODE_PRINTF("OR\t"); - break; - case 2: - DECODE_PRINTF("ADC\t"); - break; - case 3: - DECODE_PRINTF("SBB\t"); - break; - case 4: - DECODE_PRINTF("AND\t"); - break; - case 5: - DECODE_PRINTF("SUB\t"); - break; - case 6: - DECODE_PRINTF("XOR\t"); - break; - case 7: - DECODE_PRINTF("CMP\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - destval = fetch_data_byte(destoffset); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_byte_operation[rh]) (destval, imm); - if (rh != 7) - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_byte_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1545,7 +1545,7 @@ void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) uint destoffset; /* - * Weirdo special case instruction format. Part of the opcode + * Weirdo special case instruction format. Part of the opcode * held below in "RH". Doubly nested case would result, except * that the decoded instruction Similar to opcode 81, except that * the immediate byte is sign extended to a word length. @@ -1554,89 +1554,89 @@ void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ switch (rh) { - case 0: - DECODE_PRINTF("ADD\t"); - break; - case 1: - DECODE_PRINTF("OR\t"); - break; - case 2: - DECODE_PRINTF("ADC\t"); - break; - case 3: - DECODE_PRINTF("SBB\t"); - break; - case 4: - DECODE_PRINTF("AND\t"); - break; - case 5: - DECODE_PRINTF("SUB\t"); - break; - case 6: - DECODE_PRINTF("XOR\t"); - break; - case 7: - DECODE_PRINTF("CMP\t"); - break; - } + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod,rl); - - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval,imm; - - destval = fetch_data_long(destoffset); - imm = (s8) fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_long_operation[rh]) (destval, imm); - if (rh != 7) - store_data_long(destoffset, destval); - } else { - u16 destval,imm; - - destval = fetch_data_word(destoffset); - imm = (s8) fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_word_operation[rh]) (destval, imm); - if (rh != 7) - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 destval,imm; - - destreg = DECODE_RM_LONG_REGISTER(rl); - imm = (s8) fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_long_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; - } else { - u16 *destreg; - u16 destval,imm; - - destreg = DECODE_RM_WORD_REGISTER(rl); - imm = (s8) fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - destval = (*genop_word_operation[rh]) (*destreg, imm); - if (rh != 7) - *destreg = destval; - } + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod,rl); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 destval,imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } else { + u16 *destreg; + u16 destval,imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (*destreg, imm); + if (rh != 7) + *destreg = destval; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1657,20 +1657,20 @@ void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("TEST\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - destval = fetch_data_byte(destoffset); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_byte(destval, *srcreg); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_byte(*destreg, *srcreg); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(*destreg, *srcreg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1689,48 +1689,48 @@ void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("TEST\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *srcreg; - - DECODE_PRINTF(","); - destval = fetch_data_long(destoffset); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_long(destval, *srcreg); - } else { - u16 destval; - u16 *srcreg; - - DECODE_PRINTF(","); - destval = fetch_data_word(destoffset); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_word(destval, *srcreg); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_long(*destreg, *srcreg); - } else { - u16 *destreg,*srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - test_word(*destreg, *srcreg); - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(*destreg, *srcreg); + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(*destreg, *srcreg); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1752,25 +1752,25 @@ void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("XCHG\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - destval = fetch_data_byte(destoffset); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = destval; - destval = tmp; - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = *destreg; - *destreg = tmp; + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1789,59 +1789,59 @@ void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("XCHG\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg; - u32 destval,tmp; - - destval = fetch_data_long(destoffset); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = destval; - destval = tmp; - store_data_long(destoffset, destval); - } else { - u16 *srcreg; - u16 destval,tmp; - - destval = fetch_data_word(destoffset); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = destval; - destval = tmp; - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - u32 tmp; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = *destreg; - *destreg = tmp; - } else { - u16 *destreg,*srcreg; - u16 tmp; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = *srcreg; - *srcreg = *destreg; - *destreg = tmp; - } + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval,tmp; + + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } else { + u16 *srcreg; + u16 destval,tmp; + + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 tmp; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } else { + u16 *destreg,*srcreg; + u16 tmp; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1861,19 +1861,19 @@ void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - store_data_byte(destoffset, *srcreg); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1892,44 +1892,44 @@ void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg; - - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - store_data_long(destoffset, *srcreg); - } else { - u16 *srcreg; - - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - store_data_word(destoffset, *srcreg); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } else { - u16 *destreg,*srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } else { + u16 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1950,20 +1950,20 @@ void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_byte(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1982,49 +1982,49 @@ void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_long(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { - u16 *destreg; - u16 srcval; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_word(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg, *srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } else { - u16 *destreg, *srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2045,20 +2045,20 @@ void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - srcreg = decode_rm_seg_register(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = *srcreg; - store_data_word(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - srcreg = decode_rm_seg_register(rh); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2077,20 +2077,20 @@ void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) /* * TODO: Need to handle address size prefix! * - * lea eax,[eax+ebx*2] ?? + * lea eax,[eax+ebx*2] ?? */ START_OF_INSTR(); DECODE_PRINTF("LEA\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *srcreg = (u16)destoffset; - } + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16)destoffset; + } /* } else { undefined. Do nothing. } */ DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2111,20 +2111,20 @@ void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destreg = decode_rm_seg_register(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_word(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { /* register to register */ - destreg = decode_rm_seg_register(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; } /* * Clean up, and reset all the R_xSP pointers to the correct @@ -2149,42 +2149,42 @@ void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("POP\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (rh != 0) { - DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); - HALT_SYS(); + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); } if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = pop_long(); - store_data_long(destoffset, destval); - } else { - u16 destval; - - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = pop_word(); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = pop_long(); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = pop_word(); - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_long(); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_word(); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2216,23 +2216,23 @@ void x86emuOp_xchg_word_AX_register(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg32; - DECODE_PRINTF("XCHG\tEAX,"); - reg32 = DECODE_RM_LONG_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = M.x86.R_EAX; - M.x86.R_EAX = *reg32; - *reg32 = tmp; + u32 *reg32; + DECODE_PRINTF("XCHG\tEAX,"); + reg32 = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_EAX; + M.x86.R_EAX = *reg32; + *reg32 = tmp; } else { - u16 *reg16; - DECODE_PRINTF("XCHG\tAX,"); - reg16 = DECODE_RM_WORD_REGISTER(op1); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - tmp = M.x86.R_AX; - M.x86.R_EAX = *reg16; - *reg16 = (u16)tmp; + u16 *reg16; + DECODE_PRINTF("XCHG\tAX,"); + reg16 = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_AX; + M.x86.R_EAX = *reg16; + *reg16 = (u16)tmp; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2246,23 +2246,23 @@ void x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("CWDE\n"); + DECODE_PRINTF("CWDE\n"); } else { - DECODE_PRINTF("CBW\n"); + DECODE_PRINTF("CBW\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - if (M.x86.R_AX & 0x8000) { - M.x86.R_EAX |= 0xffff0000; - } else { - M.x86.R_EAX &= 0x0000ffff; - } + if (M.x86.R_AX & 0x8000) { + M.x86.R_EAX |= 0xffff0000; + } else { + M.x86.R_EAX &= 0x0000ffff; + } } else { - if (M.x86.R_AL & 0x80) { - M.x86.R_AH = 0xff; - } else { - M.x86.R_AH = 0x0; - } + if (M.x86.R_AL & 0x80) { + M.x86.R_AH = 0xff; + } else { + M.x86.R_AH = 0x0; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2276,24 +2276,24 @@ void x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("CDQ\n"); + DECODE_PRINTF("CDQ\n"); } else { - DECODE_PRINTF("CWD\n"); + DECODE_PRINTF("CWD\n"); } DECODE_PRINTF("CWD\n"); TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - if (M.x86.R_EAX & 0x80000000) { - M.x86.R_EDX = 0xffffffff; - } else { - M.x86.R_EDX = 0x0; - } + if (M.x86.R_EAX & 0x80000000) { + M.x86.R_EDX = 0xffffffff; + } else { + M.x86.R_EDX = 0x0; + } } else { - if (M.x86.R_AX & 0x8000) { - M.x86.R_DX = 0xffff; - } else { - M.x86.R_DX = 0x0; - } + if (M.x86.R_AX & 0x8000) { + M.x86.R_DX = 0xffff; + } else { + M.x86.R_DX = 0x0; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2319,7 +2319,7 @@ void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) * * Hooked interrupt vectors calling into our "BIOS" will cause * problems unless all intersegment stuff is checked for BIOS - * access. Check needed here. For moment, let it alone. + * access. Check needed here. For moment, let it alone. */ TRACE_AND_STEP(); push_word(M.x86.R_CS); @@ -2354,18 +2354,18 @@ void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("PUSHFD\n"); + DECODE_PRINTF("PUSHFD\n"); } else { - DECODE_PRINTF("PUSHF\n"); + DECODE_PRINTF("PUSHF\n"); } TRACE_AND_STEP(); /* clear out *all* bits not representing flags, and turn on real bits */ flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; if (M.x86.mode & SYSMODE_PREFIX_DATA) { - push_long(flags); + push_long(flags); } else { - push_word((u16)flags); + push_word((u16)flags); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2379,15 +2379,15 @@ void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("POPFD\n"); + DECODE_PRINTF("POPFD\n"); } else { - DECODE_PRINTF("POPF\n"); + DECODE_PRINTF("POPF\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EFLG = pop_long(); + M.x86.R_EFLG = pop_long(); } else { - M.x86.R_FLG = pop_word(); + M.x86.R_FLG = pop_word(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2456,15 +2456,15 @@ void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); offset = fetch_word_imm(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); + DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); } else { - DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); + DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EAX = fetch_data_long(offset); + M.x86.R_EAX = fetch_data_long(offset); } else { - M.x86.R_AX = fetch_data_word(offset); + M.x86.R_AX = fetch_data_word(offset); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2499,15 +2499,15 @@ void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); offset = fetch_word_imm(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); + DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); } else { - DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); + DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - store_data_long(offset, M.x86.R_EAX); + store_data_long(offset, M.x86.R_EAX); } else { - store_data_word(offset, M.x86.R_AX); + store_data_word(offset, M.x86.R_AX); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2519,30 +2519,30 @@ Handles opcode 0xa4 ****************************************************************************/ void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) { - u8 val; + u8 val; u32 count; int inc; START_OF_INSTR(); DECODE_PRINTF("MOVS\tBYTE\n"); if (ACCESS_FLAG(F_DF)) /* down */ - inc = -1; + inc = -1; else - inc = 1; + inc = 1; TRACE_AND_STEP(); count = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - count = M.x86.R_CX; - M.x86.R_CX = 0; - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } while (count--) { - val = fetch_data_byte(M.x86.R_SI); - store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); - M.x86.R_SI += inc; - M.x86.R_DI += inc; + val = fetch_data_byte(M.x86.R_SI); + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); + M.x86.R_SI += inc; + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2560,37 +2560,37 @@ void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("MOVS\tDWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -4; - else - inc = 4; + DECODE_PRINTF("MOVS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; } else { - DECODE_PRINTF("MOVS\tWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -2; - else - inc = 2; + DECODE_PRINTF("MOVS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; } TRACE_AND_STEP(); count = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - count = M.x86.R_CX; - M.x86.R_CX = 0; - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } while (count--) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val = fetch_data_long(M.x86.R_SI); - store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); - } else { - val = fetch_data_word(M.x86.R_SI); - store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val); - } - M.x86.R_SI += inc; - M.x86.R_DI += inc; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long(M.x86.R_SI); + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); + } else { + val = fetch_data_word(M.x86.R_SI); + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2609,30 +2609,30 @@ void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("CMPS\tBYTE\n"); TRACE_AND_STEP(); if (ACCESS_FLAG(F_DF)) /* down */ - inc = -1; + inc = -1; else - inc = 1; + inc = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* REPE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - val1 = fetch_data_byte(M.x86.R_SI); - val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); - cmp_byte(val1, val2); - M.x86.R_CX -= 1; - M.x86.R_SI += inc; - M.x86.R_DI += inc; - if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && (ACCESS_FLAG(F_ZF) == 0) ) break; - if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && (ACCESS_FLAG(F_ZF) == 0) ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - val1 = fetch_data_byte(M.x86.R_SI); - val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); - cmp_byte(val1, val2); - M.x86.R_SI += inc; - M.x86.R_DI += inc; + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_SI += inc; + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2649,48 +2649,48 @@ void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("CMPS\tDWORD\n"); - inc = 4; + DECODE_PRINTF("CMPS\tDWORD\n"); + inc = 4; } else { - DECODE_PRINTF("CMPS\tWORD\n"); - inc = 2; + DECODE_PRINTF("CMPS\tWORD\n"); + inc = 2; } if (ACCESS_FLAG(F_DF)) /* down */ - inc = -inc; + inc = -inc; TRACE_AND_STEP(); if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* REPE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val1 = fetch_data_long(M.x86.R_SI); - val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); - cmp_long(val1, val2); - } else { - val1 = fetch_data_word(M.x86.R_SI); - val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); - cmp_word((u16)val1, (u16)val2); - } - M.x86.R_CX -= 1; - M.x86.R_SI += inc; - M.x86.R_DI += inc; - if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && ACCESS_FLAG(F_ZF) == 0 ) break; - if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && ACCESS_FLAG(F_ZF) == 0 ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val1 = fetch_data_long(M.x86.R_SI); - val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); - cmp_long(val1, val2); - } else { - val1 = fetch_data_word(M.x86.R_SI); - val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); - cmp_word((u16)val1, (u16)val2); - } - M.x86.R_SI += inc; - M.x86.R_DI += inc; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2724,18 +2724,18 @@ void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("TEST\tEAX,"); - srcval = fetch_long_imm(); + DECODE_PRINTF("TEST\tEAX,"); + srcval = fetch_long_imm(); } else { - DECODE_PRINTF("TEST\tAX,"); - srcval = fetch_word_imm(); + DECODE_PRINTF("TEST\tAX,"); + srcval = fetch_word_imm(); } DECODE_PRINTF2("%x\n", srcval); TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - test_long(M.x86.R_EAX, srcval); + test_long(M.x86.R_EAX, srcval); } else { - test_word(M.x86.R_AX, (u16)srcval); + test_word(M.x86.R_AX, (u16)srcval); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2752,22 +2752,22 @@ void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); DECODE_PRINTF("STOS\tBYTE\n"); if (ACCESS_FLAG(F_DF)) /* down */ - inc = -1; + inc = -1; else - inc = 1; + inc = 1; TRACE_AND_STEP(); if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); - M.x86.R_CX -= 1; - M.x86.R_DI += inc; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); - M.x86.R_DI += inc; + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2784,34 +2784,34 @@ void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("STOS\tDWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -4; - else - inc = 4; + DECODE_PRINTF("STOS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; } else { - DECODE_PRINTF("STOS\tWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -2; - else - inc = 2; + DECODE_PRINTF("STOS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; } TRACE_AND_STEP(); count = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - count = M.x86.R_CX; - M.x86.R_CX = 0; - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } while (count--) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); - } else { - store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); - } - M.x86.R_DI += inc; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); + } else { + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); + } + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2829,21 +2829,21 @@ void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("LODS\tBYTE\n"); TRACE_AND_STEP(); if (ACCESS_FLAG(F_DF)) /* down */ - inc = -1; + inc = -1; else - inc = 1; + inc = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - M.x86.R_AL = fetch_data_byte(M.x86.R_SI); - M.x86.R_CX -= 1; - M.x86.R_SI += inc; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - M.x86.R_AL = fetch_data_byte(M.x86.R_SI); - M.x86.R_SI += inc; + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_SI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2860,34 +2860,34 @@ void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("LODS\tDWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -4; - else - inc = 4; + DECODE_PRINTF("LODS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; } else { - DECODE_PRINTF("LODS\tWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -2; - else - inc = 2; + DECODE_PRINTF("LODS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; } TRACE_AND_STEP(); count = 1; if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* move them until CX is ZERO. */ - count = M.x86.R_CX; - M.x86.R_CX = 0; - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* move them until CX is ZERO. */ + count = M.x86.R_CX; + M.x86.R_CX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } while (count--) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EAX = fetch_data_long(M.x86.R_SI); - } else { - M.x86.R_AX = fetch_data_word(M.x86.R_SI); - } - M.x86.R_SI += inc; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(M.x86.R_SI); + } else { + M.x86.R_AX = fetch_data_word(M.x86.R_SI); + } + M.x86.R_SI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2906,37 +2906,37 @@ void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("SCAS\tBYTE\n"); TRACE_AND_STEP(); if (ACCESS_FLAG(F_DF)) /* down */ - inc = -1; + inc = -1; else - inc = 1; + inc = 1; if (M.x86.mode & SYSMODE_PREFIX_REPE) { - /* REPE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); - cmp_byte(M.x86.R_AL, val2); - M.x86.R_CX -= 1; - M.x86.R_DI += inc; - if (ACCESS_FLAG(F_ZF) == 0) - break; - } - M.x86.mode &= ~SYSMODE_PREFIX_REPE; + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { - /* REPNE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); - cmp_byte(M.x86.R_AL, val2); - M.x86.R_CX -= 1; - M.x86.R_DI += inc; - if (ACCESS_FLAG(F_ZF)) - break; /* zero flag set means equal */ - } - M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; } else { - val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); - cmp_byte(M.x86.R_AL, val2); - M.x86.R_DI += inc; + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -2953,62 +2953,62 @@ void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("SCAS\tDWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -4; - else - inc = 4; + DECODE_PRINTF("SCAS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; } else { - DECODE_PRINTF("SCAS\tWORD\n"); - if (ACCESS_FLAG(F_DF)) /* down */ - inc = -2; - else - inc = 2; + DECODE_PRINTF("SCAS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_REPE) { - /* REPE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); - cmp_long(M.x86.R_EAX, val); - } else { - val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); - cmp_word(M.x86.R_AX, (u16)val); - } - M.x86.R_CX -= 1; - M.x86.R_DI += inc; - if (ACCESS_FLAG(F_ZF) == 0) - break; - } - M.x86.mode &= ~SYSMODE_PREFIX_REPE; + /* REPE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { - /* REPNE */ - /* move them until CX is ZERO. */ - while (M.x86.R_CX != 0) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); - cmp_long(M.x86.R_EAX, val); - } else { - val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); - cmp_word(M.x86.R_AX, (u16)val); - } - M.x86.R_CX -= 1; - M.x86.R_DI += inc; - if (ACCESS_FLAG(F_ZF)) - break; /* zero flag set means equal */ - } - M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + /* REPNE */ + /* move them until CX is ZERO. */ + while (M.x86.R_CX != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; } else { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); - cmp_long(M.x86.R_EAX, val); - } else { - val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); - cmp_word(M.x86.R_AX, (u16)val); - } - M.x86.R_DI += inc; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_DI += inc; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3047,19 +3047,19 @@ void x86emuOp_mov_word_register_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); DECODE_PRINTF("MOV\t"); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *reg32; - reg32 = DECODE_RM_LONG_REGISTER(op1); - srcval = fetch_long_imm(); - DECODE_PRINTF2(",%x\n", srcval); - TRACE_AND_STEP(); - *reg32 = srcval; + u32 *reg32; + reg32 = DECODE_RM_LONG_REGISTER(op1); + srcval = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg32 = srcval; } else { - u16 *reg16; - reg16 = DECODE_RM_WORD_REGISTER(op1); - srcval = fetch_word_imm(); - DECODE_PRINTF2(",%x\n", srcval); - TRACE_AND_STEP(); - *reg16 = (u16)srcval; + u16 *reg16; + reg16 = DECODE_RM_WORD_REGISTER(op1); + srcval = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg16 = (u16)srcval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3086,57 +3086,57 @@ void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - destval = fetch_data_byte(destoffset); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (destval, amt); - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (*destreg, amt); - *destreg = destval; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3161,83 +3161,83 @@ void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_long_operation[rh]) (destval, amt); - store_data_long(destoffset, destval); - } else { - u16 destval; - - DECODE_PRINTF("WORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_word_operation[rh]) (destval, amt); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - TRACE_AND_STEP(); - *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - amt = fetch_byte_imm(); - DECODE_PRINTF2(",%x\n", amt); - TRACE_AND_STEP(); - *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3292,15 +3292,15 @@ void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("LES\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - dstreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *dstreg = fetch_data_word(srcoffset); - M.x86.R_ES = fetch_data_word(srcoffset + 2); + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); } - /* else UNDEFINED! register to register */ + /* else UNDEFINED! register to register */ DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3320,13 +3320,13 @@ void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("LDS\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - dstreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *dstreg = fetch_data_word(srcoffset); - M.x86.R_DS = fetch_data_word(srcoffset + 2); + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); } /* else UNDEFINED! */ DECODE_CLEAR_SEGOVR(); @@ -3348,22 +3348,22 @@ void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (rh != 0) { - DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); - HALT_SYS(); + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); + HALT_SYS(); } if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%2x\n", imm); - TRACE_AND_STEP(); - store_data_byte(destoffset, imm); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - imm = fetch_byte_imm(); - DECODE_PRINTF2(",%2x\n", imm); - TRACE_AND_STEP(); - *destreg = imm; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3382,49 +3382,49 @@ void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("MOV\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (rh != 0) { - DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); - HALT_SYS(); + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); } if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 imm; - - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - imm = fetch_long_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - store_data_long(destoffset, imm); - } else { - u16 imm; - - DECODE_PRINTF("WORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - imm = fetch_word_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - store_data_word(destoffset, imm); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { u32 *destreg; u32 imm; - destreg = DECODE_RM_LONG_REGISTER(rl); - imm = fetch_long_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - *destreg = imm; - } else { + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } else { u16 *destreg; u16 imm; - destreg = DECODE_RM_WORD_REGISTER(rl); - imm = fetch_word_imm(); - DECODE_PRINTF2(",%x\n", imm); - TRACE_AND_STEP(); - *destreg = imm; - } + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3437,7 +3437,7 @@ Handles opcode 0xc8 void x86emuOp_enter(u8 X86EMU_UNUSED(op1)) { u16 local,frame_pointer; - u8 nesting; + u8 nesting; int i; START_OF_INSTR(); @@ -3449,12 +3449,12 @@ void x86emuOp_enter(u8 X86EMU_UNUSED(op1)) push_word(M.x86.R_BP); frame_pointer = M.x86.R_SP; if (nesting > 0) { - for (i = 1; i < nesting; i++) { - M.x86.R_BP -= 2; - push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); - } - push_word(frame_pointer); - } + for (i = 1; i < nesting; i++) { + M.x86.R_BP -= 2; + push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); + } + push_word(frame_pointer); + } M.x86.R_BP = frame_pointer; M.x86.R_SP = (u16)(M.x86.R_SP - local); DECODE_CLEAR_SEGOVR(); @@ -3529,13 +3529,13 @@ void x86emuOp_int3(u8 X86EMU_UNUSED(op1)) if (_X86EMU_intrTab[3]) { (*_X86EMU_intrTab[3])(3); } else { - push_word((u16)M.x86.R_FLG); - CLEAR_FLAG(F_IF); - CLEAR_FLAG(F_TF); - push_word(M.x86.R_CS); - M.x86.R_CS = mem_access_word(3 * 4 + 2); - push_word(M.x86.R_IP); - M.x86.R_IP = mem_access_word(3 * 4); + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(3 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(3 * 4); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3559,13 +3559,13 @@ void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) if (_X86EMU_intrTab[intnum]) { (*_X86EMU_intrTab[intnum])(intnum); } else { - push_word((u16)M.x86.R_FLG); - CLEAR_FLAG(F_IF); - CLEAR_FLAG(F_TF); - push_word(M.x86.R_CS); - M.x86.R_CS = mem_access_word(intnum * 4 + 2); - push_word(M.x86.R_IP); - M.x86.R_IP = mem_access_word(intnum * 4); + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intnum * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intnum * 4); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3583,18 +3583,18 @@ void x86emuOp_into(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("INTO\n"); TRACE_AND_STEP(); if (ACCESS_FLAG(F_OF)) { - tmp = mem_access_word(4 * 4 + 2); + tmp = mem_access_word(4 * 4 + 2); if (_X86EMU_intrTab[4]) { (*_X86EMU_intrTab[4])(4); - } else { - push_word((u16)M.x86.R_FLG); - CLEAR_FLAG(F_IF); - CLEAR_FLAG(F_TF); - push_word(M.x86.R_CS); - M.x86.R_CS = mem_access_word(4 * 4 + 2); - push_word(M.x86.R_IP); - M.x86.R_IP = mem_access_word(4 * 4); - } + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(4 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(4 * 4); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3638,54 +3638,54 @@ void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",1\n"); - destval = fetch_data_byte(destoffset); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (destval, 1); - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(",1\n"); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (*destreg, 1); - *destreg = destval; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, 1); + *destreg = destval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3709,82 +3709,82 @@ void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",1\n"); - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_long_operation[rh]) (destval, 1); - store_data_long(destoffset, destval); - } else { - u16 destval; - - DECODE_PRINTF("WORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",1\n"); - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_word_operation[rh]) (destval, 1); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { u32 destval; u32 *destreg; - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(",1\n"); - TRACE_AND_STEP(); - destval = (*opcD1_long_operation[rh]) (*destreg, 1); - *destreg = destval; - } else { + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (*destreg, 1); + *destreg = destval; + } else { u16 destval; u16 *destreg; - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(",1\n"); - TRACE_AND_STEP(); - destval = (*opcD1_word_operation[rh]) (*destreg, 1); - *destreg = destval; - } + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (*destreg, 1); + *destreg = destval; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3811,55 +3811,55 @@ void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ amt = M.x86.R_CL; if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",CL\n"); - destval = fetch_data_byte(destoffset); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (destval, amt); - store_data_byte(destoffset, destval); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - destval = (*opcD0_byte_operation[rh]) (*destreg, amt); - *destreg = destval; + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3884,79 +3884,79 @@ void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - switch (rh) { - case 0: - DECODE_PRINTF("ROL\t"); - break; - case 1: - DECODE_PRINTF("ROR\t"); - break; - case 2: - DECODE_PRINTF("RCL\t"); - break; - case 3: - DECODE_PRINTF("RCR\t"); - break; - case 4: - DECODE_PRINTF("SHL\t"); - break; - case 5: - DECODE_PRINTF("SHR\t"); - break; - case 6: - DECODE_PRINTF("SAL\t"); - break; - case 7: - DECODE_PRINTF("SAR\t"); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } } #endif /* know operation, decode the mod byte to find the addressing mode. */ amt = M.x86.R_CL; if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",CL\n"); - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_long_operation[rh]) (destval, amt); - store_data_long(destoffset, destval); - } else { - u16 destval; - - DECODE_PRINTF("WORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(",CL\n"); - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - destval = (*opcD1_word_operation[rh]) (destval, amt); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -3974,9 +3974,9 @@ void x86emuOp_aam(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("AAM\n"); a = fetch_byte_imm(); /* this is a stupid encoding. */ if (a != 10) { - DECODE_PRINTF("ERROR DECODING AAM\n"); - TRACE_REGS(); - HALT_SYS(); + DECODE_PRINTF("ERROR DECODING AAM\n"); + TRACE_REGS(); + HALT_SYS(); } TRACE_AND_STEP(); /* note the type change here --- returning AL and AH in AX. */ @@ -4021,7 +4021,7 @@ void x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) END_OF_INSTR(); } -/* instuctions D8 .. DF are in i87_ops.c */ +/* instuctions D8 .. DF are in i87_ops.c */ /**************************************************************************** REMARKS: @@ -4038,8 +4038,8 @@ void x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF2("%04x\n", ip); TRACE_AND_STEP(); M.x86.R_CX -= 1; - if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ - M.x86.R_IP = ip; + if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ + M.x86.R_IP = ip; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -4059,8 +4059,8 @@ void x86emuOp_loope(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF2("%04x\n", ip); TRACE_AND_STEP(); M.x86.R_CX -= 1; - if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ - M.x86.R_IP = ip; + if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ + M.x86.R_IP = ip; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -4081,7 +4081,7 @@ void x86emuOp_loop(u8 X86EMU_UNUSED(op1)) TRACE_AND_STEP(); M.x86.R_CX -= 1; if (M.x86.R_CX != 0) - M.x86.R_IP = ip; + M.x86.R_IP = ip; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -4093,7 +4093,7 @@ Handles opcode 0xe3 void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) { u16 target; - s8 offset; + s8 offset; /* jump to byte offset if overflow flag is set */ START_OF_INSTR(); @@ -4103,7 +4103,7 @@ void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF2("%x\n", target); TRACE_AND_STEP(); if (M.x86.R_CX == 0) - M.x86.R_IP = target; + M.x86.R_IP = target; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -4138,15 +4138,15 @@ void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("IN\t"); port = (u8) fetch_byte_imm(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF2("EAX,%x\n", port); + DECODE_PRINTF2("EAX,%x\n", port); } else { - DECODE_PRINTF2("AX,%x\n", port); + DECODE_PRINTF2("AX,%x\n", port); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EAX = (*sys_inl)(port); + M.x86.R_EAX = (*sys_inl)(port); } else { - M.x86.R_AX = (*sys_inw)(port); + M.x86.R_AX = (*sys_inw)(port); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4182,15 +4182,15 @@ void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF("OUT\t"); port = (u8) fetch_byte_imm(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF2("%x,EAX\n", port); + DECODE_PRINTF2("%x,EAX\n", port); } else { - DECODE_PRINTF2("%x,AX\n", port); + DECODE_PRINTF2("%x,AX\n", port); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - (*sys_outl)(port, M.x86.R_EAX); + (*sys_outl)(port, M.x86.R_EAX); } else { - (*sys_outw)(port, M.x86.R_AX); + (*sys_outw)(port, M.x86.R_AX); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4207,7 +4207,7 @@ void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) START_OF_INSTR(); DECODE_PRINTF("CALL\t"); ip = (s16) fetch_word_imm(); - ip += (s16) M.x86.R_IP; /* CHECK SIGN */ + ip += (s16) M.x86.R_IP; /* CHECK SIGN */ DECODE_PRINTF2("%04x\n", ip); CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, ""); TRACE_AND_STEP(); @@ -4299,15 +4299,15 @@ void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("IN\tEAX,DX\n"); + DECODE_PRINTF("IN\tEAX,DX\n"); } else { - DECODE_PRINTF("IN\tAX,DX\n"); + DECODE_PRINTF("IN\tAX,DX\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_EAX = (*sys_inl)(M.x86.R_DX); + M.x86.R_EAX = (*sys_inl)(M.x86.R_DX); } else { - M.x86.R_AX = (*sys_inw)(M.x86.R_DX); + M.x86.R_AX = (*sys_inw)(M.x86.R_DX); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4335,15 +4335,15 @@ void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) { START_OF_INSTR(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("OUT\tDX,EAX\n"); + DECODE_PRINTF("OUT\tDX,EAX\n"); } else { - DECODE_PRINTF("OUT\tDX,AX\n"); + DECODE_PRINTF("OUT\tDX,AX\n"); } TRACE_AND_STEP(); if (M.x86.mode & SYSMODE_PREFIX_DATA) { - (*sys_outl)(M.x86.R_DX, M.x86.R_EAX); + (*sys_outl)(M.x86.R_DX, M.x86.R_EAX); } else { - (*sys_outw)(M.x86.R_DX, M.x86.R_AX); + (*sys_outw)(M.x86.R_DX, M.x86.R_AX); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4438,100 +4438,100 @@ void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); DECODE_PRINTF(opF6_names[rh]); if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - destval = fetch_data_byte(destoffset); - - switch (rh) { - case 0: /* test byte imm */ - DECODE_PRINTF(","); - srcval = fetch_byte_imm(); - DECODE_PRINTF2("%02x\n", srcval); - TRACE_AND_STEP(); - test_byte(destval, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = not_byte(destval); - store_data_byte(destoffset, destval); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = neg_byte(destval); - store_data_byte(destoffset, destval); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_byte(destval); - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_byte(destval); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_byte(destval); - break; - default: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_byte(destval); - break; - } - } else { /* mod=11 */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - switch (rh) { - case 0: /* test byte imm */ - DECODE_PRINTF(","); - srcval = fetch_byte_imm(); - DECODE_PRINTF2("%02x\n", srcval); - TRACE_AND_STEP(); - test_byte(*destreg, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = not_byte(*destreg); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = neg_byte(*destreg); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_byte(*destreg); /*!!! */ - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_byte(*destreg); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_byte(*destreg); - break; - default: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_byte(*destreg); - break; - } + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(destval); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + } else { /* mod=11 */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_byte(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_byte(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(*destreg); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(*destreg); + break; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4551,213 +4551,213 @@ void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) DECODE_PRINTF(opF6_names[rh]); if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval, srcval; - - DECODE_PRINTF("DWORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - destval = fetch_data_long(destoffset); - - switch (rh) { - case 0: - DECODE_PRINTF(","); - srcval = fetch_long_imm(); - DECODE_PRINTF2("%x\n", srcval); - TRACE_AND_STEP(); - test_long(destval, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = not_long(destval); - store_data_long(destoffset, destval); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = neg_long(destval); - store_data_long(destoffset, destval); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_long(destval); - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_long(destval); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_long(destval); - break; - case 7: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_long(destval); - break; - } - } else { - u16 destval, srcval; - - DECODE_PRINTF("WORD PTR "); - destoffset = decode_rmXX_address(mod, rl); - destval = fetch_data_word(destoffset); - - switch (rh) { - case 0: /* test word imm */ - DECODE_PRINTF(","); - srcval = fetch_word_imm(); - DECODE_PRINTF2("%x\n", srcval); - TRACE_AND_STEP(); - test_word(destval, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = not_word(destval); - store_data_word(destoffset, destval); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - destval = neg_word(destval); - store_data_word(destoffset, destval); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_word(destval); - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_word(destval); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_word(destval); - break; - case 7: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_word(destval); - break; - } - } - - } else { /* mod=11 */ - - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - - destreg = DECODE_RM_LONG_REGISTER(rl); - - switch (rh) { - case 0: /* test word imm */ - DECODE_PRINTF(","); - srcval = fetch_long_imm(); - DECODE_PRINTF2("%x\n", srcval); - TRACE_AND_STEP(); - test_long(*destreg, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = not_long(*destreg); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = neg_long(*destreg); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_long(*destreg); /*!!! */ - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_long(*destreg); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_long(*destreg); - break; - case 7: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_long(*destreg); - break; - } - } else { - u16 *destreg; - u16 srcval; - - destreg = DECODE_RM_WORD_REGISTER(rl); - - switch (rh) { - case 0: /* test word imm */ - DECODE_PRINTF(","); - srcval = fetch_word_imm(); - DECODE_PRINTF2("%x\n", srcval); - TRACE_AND_STEP(); - test_word(*destreg, srcval); - break; - case 1: - DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); - HALT_SYS(); - break; - case 2: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = not_word(*destreg); - break; - case 3: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = neg_word(*destreg); - break; - case 4: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - mul_word(*destreg); /*!!! */ - break; - case 5: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - imul_word(*destreg); - break; - case 6: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - div_word(*destreg); - break; - case 7: - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - idiv_word(*destreg); - break; - } - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_long(destoffset); + + switch (rh) { + case 0: + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(destval); + break; + } + } else { + u16 destval, srcval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_word(destoffset); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(destval); + break; + } + } + + } else { /* mod=11 */ + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_long(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_long(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(*destreg); + break; + } + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_word(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_word(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(*destreg); + break; + } + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4869,49 +4869,49 @@ void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - DECODE_PRINTF("INC\t"); - break; - case 1: - DECODE_PRINTF("DEC\t"); - break; - case 2: - case 3: - case 4: - case 5: - case 6: - case 7: - DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); - HALT_SYS(); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("INC\t"); + break; + case 1: + DECODE_PRINTF("DEC\t"); + break; + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); + HALT_SYS(); + break; + } } #endif if (mod < 3) { - DECODE_PRINTF("BYTE PTR "); - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - destval = fetch_data_byte(destoffset); - TRACE_AND_STEP(); - if (rh == 0) - destval = inc_byte(destval); - else - destval = dec_byte(destval); - store_data_byte(destoffset, destval); + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + if (rh == 0) + destval = inc_byte(destval); + else + destval = dec_byte(destval); + store_data_byte(destoffset, destval); } else { - destreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - if (rh == 0) - *destreg = inc_byte(*destreg); - else - *destreg = dec_byte(*destreg); + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + if (rh == 0) + *destreg = inc_byte(*destreg); + else + *destreg = dec_byte(*destreg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -4933,207 +4933,207 @@ void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) FETCH_DECODE_MODRM(mod, rh, rl); #ifdef DEBUG if (DEBUG_DECODE()) { - /* XXX DECODE_PRINTF may be changed to something more - general, so that it is important to leave the strings - in the same format, even though the result is that the - above test is done twice. */ - - switch (rh) { - case 0: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("INC\tDWORD PTR "); - } else { - DECODE_PRINTF("INC\tWORD PTR "); - } - break; - case 1: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - DECODE_PRINTF("DEC\tDWORD PTR "); - } else { - DECODE_PRINTF("DEC\tWORD PTR "); - } - break; - case 2: - DECODE_PRINTF("CALL\t "); - break; - case 3: - DECODE_PRINTF("CALL\tFAR "); - break; - case 4: - DECODE_PRINTF("JMP\t"); - break; - case 5: - DECODE_PRINTF("JMP\tFAR "); - break; - case 6: - DECODE_PRINTF("PUSH\t"); - break; - case 7: - DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); - HALT_SYS(); - break; - } + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tDWORD PTR "); + } else { + DECODE_PRINTF("INC\tWORD PTR "); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tDWORD PTR "); + } else { + DECODE_PRINTF("DEC\tWORD PTR "); + } + break; + case 2: + DECODE_PRINTF("CALL\t "); + break; + case 3: + DECODE_PRINTF("CALL\tFAR "); + break; + case 4: + DECODE_PRINTF("JMP\t"); + break; + case 5: + DECODE_PRINTF("JMP\tFAR "); + break; + case 6: + DECODE_PRINTF("PUSH\t"); + break; + case 7: + DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); + HALT_SYS(); + break; + } } #endif if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - switch (rh) { - case 0: /* inc word ptr ... */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = inc_long(destval); - store_data_long(destoffset, destval); - } else { - u16 destval; - - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - destval = inc_word(destval); - store_data_word(destoffset, destval); - } - break; - case 1: /* dec word ptr ... */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = dec_long(destval); - store_data_long(destoffset, destval); - } else { - u16 destval; - - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - destval = dec_word(destval); - store_data_word(destoffset, destval); - } - break; - case 2: /* call word ptr ... */ - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - push_word(M.x86.R_IP); - M.x86.R_IP = destval; - break; - case 3: /* call far ptr ... */ - destval = fetch_data_word(destoffset); - destval2 = fetch_data_word(destoffset + 2); - TRACE_AND_STEP(); - push_word(M.x86.R_CS); - M.x86.R_CS = destval2; - push_word(M.x86.R_IP); - M.x86.R_IP = destval; - break; - case 4: /* jmp word ptr ... */ - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - M.x86.R_IP = destval; - break; - case 5: /* jmp far ptr ... */ - destval = fetch_data_word(destoffset); - destval2 = fetch_data_word(destoffset + 2); - TRACE_AND_STEP(); - M.x86.R_IP = destval; - M.x86.R_CS = destval2; - break; - case 6: /* push word ptr ... */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - push_long(destval); - } else { - u16 destval; - - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - push_word(destval); - } - break; - } + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: /* inc word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = inc_long(destval); + store_data_long(destoffset, destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: /* dec word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = dec_long(destval); + store_data_long(destoffset, destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval); + } else { + u16 destval; + + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } } else { - switch (rh) { - case 0: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = inc_long(*destreg); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = inc_word(*destreg); - } - break; - case 1: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = dec_long(*destreg); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = dec_word(*destreg); - } - break; - case 2: /* call word ptr ... */ - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_word(M.x86.R_IP); - M.x86.R_IP = *destreg; - break; - case 3: /* jmp far ptr ... */ - DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); - TRACE_AND_STEP(); - HALT_SYS(); - break; - - case 4: /* jmp ... */ - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - M.x86.R_IP = (u16) (*destreg); - break; - case 5: /* jmp far ptr ... */ - DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); - TRACE_AND_STEP(); - HALT_SYS(); - break; - case 6: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_long(*destreg); - } else { - u16 *destreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_word(*destreg); - } - break; - } + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_word(*destreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_word(*destreg); + } + break; + case 2: /* call word ptr ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = *destreg; + break; + case 3: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + + case 4: /* jmp ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + M.x86.R_IP = (u16) (*destreg); + break; + case 5: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*destreg); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*destreg); + } + break; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); diff --git a/drivers/bios_emulator/x86emu/ops2.c b/drivers/bios_emulator/x86emu/ops2.c index 2412b24..631a340 100644 --- a/drivers/bios_emulator/x86emu/ops2.c +++ b/drivers/bios_emulator/x86emu/ops2.c @@ -1,13 +1,13 @@ /**************************************************************************** * -* Realmode X86 Emulator Library +* Realmode X86 Emulator Library * * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. * Jason Jin * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -17,7 +17,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -31,16 +31,16 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: This file includes subroutines to implement the decoding -* and emulation of all the x86 extended two-byte processor -* instructions. +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 extended two-byte processor +* instructions. * -* Jason port this file to u-boot. Put the function pointer into -* got2 sector. +* Jason port this file to u-boot. Put the function pointer into +* got2 sector. * ****************************************************************************/ @@ -62,7 +62,7 @@ void x86emuOp2_illegal_op( DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); TRACE_REGS(); printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", - M.x86.R_CS, M.x86.R_IP-2,op2); + M.x86.R_CS, M.x86.R_IP-2,op2); HALT_SYS(); END_OF_INSTR(); } @@ -77,69 +77,69 @@ int x86emu_check_jump_condition(u8 op) { switch (op) { case 0x0: - DECODE_PRINTF("JO\t"); - return ACCESS_FLAG(F_OF); + DECODE_PRINTF("JO\t"); + return ACCESS_FLAG(F_OF); case 0x1: - DECODE_PRINTF("JNO\t"); - return !ACCESS_FLAG(F_OF); - break; + DECODE_PRINTF("JNO\t"); + return !ACCESS_FLAG(F_OF); + break; case 0x2: - DECODE_PRINTF("JB\t"); - return ACCESS_FLAG(F_CF); - break; + DECODE_PRINTF("JB\t"); + return ACCESS_FLAG(F_CF); + break; case 0x3: - DECODE_PRINTF("JNB\t"); - return !ACCESS_FLAG(F_CF); - break; + DECODE_PRINTF("JNB\t"); + return !ACCESS_FLAG(F_CF); + break; case 0x4: - DECODE_PRINTF("JZ\t"); - return ACCESS_FLAG(F_ZF); - break; + DECODE_PRINTF("JZ\t"); + return ACCESS_FLAG(F_ZF); + break; case 0x5: - DECODE_PRINTF("JNZ\t"); - return !ACCESS_FLAG(F_ZF); - break; + DECODE_PRINTF("JNZ\t"); + return !ACCESS_FLAG(F_ZF); + break; case 0x6: - DECODE_PRINTF("JBE\t"); - return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); - break; + DECODE_PRINTF("JBE\t"); + return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; case 0x7: - DECODE_PRINTF("JNBE\t"); - return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); - break; + DECODE_PRINTF("JNBE\t"); + return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; case 0x8: - DECODE_PRINTF("JS\t"); - return ACCESS_FLAG(F_SF); - break; + DECODE_PRINTF("JS\t"); + return ACCESS_FLAG(F_SF); + break; case 0x9: - DECODE_PRINTF("JNS\t"); - return !ACCESS_FLAG(F_SF); - break; + DECODE_PRINTF("JNS\t"); + return !ACCESS_FLAG(F_SF); + break; case 0xa: - DECODE_PRINTF("JP\t"); - return ACCESS_FLAG(F_PF); - break; + DECODE_PRINTF("JP\t"); + return ACCESS_FLAG(F_PF); + break; case 0xb: - DECODE_PRINTF("JNP\t"); - return !ACCESS_FLAG(F_PF); - break; + DECODE_PRINTF("JNP\t"); + return !ACCESS_FLAG(F_PF); + break; case 0xc: - DECODE_PRINTF("JL\t"); - return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); - break; + DECODE_PRINTF("JL\t"); + return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; case 0xd: - DECODE_PRINTF("JNL\t"); - return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); - break; + DECODE_PRINTF("JNL\t"); + return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; case 0xe: - DECODE_PRINTF("JLE\t"); - return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || - ACCESS_FLAG(F_ZF)); - break; + DECODE_PRINTF("JLE\t"); + return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; default: - DECODE_PRINTF("JNLE\t"); - return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || - ACCESS_FLAG(F_ZF)); + DECODE_PRINTF("JNLE\t"); + return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); } } @@ -156,7 +156,7 @@ void x86emuOp2_long_jump(u8 op2) DECODE_PRINTF2("%04x\n", target); TRACE_AND_STEP(); if (cond) - M.x86.R_IP = (u16)target; + M.x86.R_IP = (u16)target; DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); } @@ -169,89 +169,89 @@ void x86emuOp2_set_byte(u8 op2) { int mod, rl, rh; uint destoffset; - u8 *destreg; + u8 *destreg; char *name = 0; int cond = 0; START_OF_INSTR(); switch (op2) { case 0x90: - name = "SETO\t"; - cond = ACCESS_FLAG(F_OF); - break; + name = "SETO\t"; + cond = ACCESS_FLAG(F_OF); + break; case 0x91: - name = "SETNO\t"; - cond = !ACCESS_FLAG(F_OF); - break; + name = "SETNO\t"; + cond = !ACCESS_FLAG(F_OF); + break; case 0x92: - name = "SETB\t"; - cond = ACCESS_FLAG(F_CF); - break; + name = "SETB\t"; + cond = ACCESS_FLAG(F_CF); + break; case 0x93: - name = "SETNB\t"; - cond = !ACCESS_FLAG(F_CF); - break; + name = "SETNB\t"; + cond = !ACCESS_FLAG(F_CF); + break; case 0x94: - name = "SETZ\t"; - cond = ACCESS_FLAG(F_ZF); - break; + name = "SETZ\t"; + cond = ACCESS_FLAG(F_ZF); + break; case 0x95: - name = "SETNZ\t"; - cond = !ACCESS_FLAG(F_ZF); - break; + name = "SETNZ\t"; + cond = !ACCESS_FLAG(F_ZF); + break; case 0x96: - name = "SETBE\t"; - cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); - break; + name = "SETBE\t"; + cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; case 0x97: - name = "SETNBE\t"; - cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); - break; + name = "SETNBE\t"; + cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; case 0x98: - name = "SETS\t"; - cond = ACCESS_FLAG(F_SF); - break; + name = "SETS\t"; + cond = ACCESS_FLAG(F_SF); + break; case 0x99: - name = "SETNS\t"; - cond = !ACCESS_FLAG(F_SF); - break; + name = "SETNS\t"; + cond = !ACCESS_FLAG(F_SF); + break; case 0x9a: - name = "SETP\t"; - cond = ACCESS_FLAG(F_PF); - break; + name = "SETP\t"; + cond = ACCESS_FLAG(F_PF); + break; case 0x9b: - name = "SETNP\t"; - cond = !ACCESS_FLAG(F_PF); - break; + name = "SETNP\t"; + cond = !ACCESS_FLAG(F_PF); + break; case 0x9c: - name = "SETL\t"; - cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); - break; + name = "SETL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; case 0x9d: - name = "SETNL\t"; - cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); - break; + name = "SETNL\t"; + cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; case 0x9e: - name = "SETLE\t"; - cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || - ACCESS_FLAG(F_ZF)); - break; + name = "SETLE\t"; + cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; case 0x9f: - name = "SETNLE\t"; - cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || - ACCESS_FLAG(F_ZF)); - break; + name = "SETNLE\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; } DECODE_PRINTF(name); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - TRACE_AND_STEP(); - store_data_byte(destoffset, cond ? 0x01 : 0x00); - } else { /* register to register */ - destreg = DECODE_RM_BYTE_REGISTER(rl); - TRACE_AND_STEP(); - *destreg = cond ? 0x01 : 0x00; + destoffset = decode_rmXX_address(mod, rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + TRACE_AND_STEP(); + *destreg = cond ? 0x01 : 0x00; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -299,50 +299,50 @@ void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BT\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval; - u32 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - disp = (s16)*shiftreg >> 5; - srcval = fetch_data_long(srcoffset+disp); - CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); - } else { - u16 srcval; - u16 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - disp = (s16)*shiftreg >> 4; - srcval = fetch_data_word(srcoffset+disp); - CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg,*shiftreg; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); - } else { - u16 *srcreg,*shiftreg; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); - } + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } else { + u16 srcval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } else { + u16 *srcreg,*shiftreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -362,58 +362,58 @@ void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("SHLD\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - destval = fetch_data_long(destoffset); - destval = shld_long(destval,*shiftreg,shift); - store_data_long(destoffset, destval); - } else { - u16 destval; - u16 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - destval = fetch_data_word(destoffset); - destval = shld_word(destval,*shiftreg,shift); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*shiftreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - *destreg = shld_long(*destreg,*shiftreg,shift); - } else { - u16 *destreg,*shiftreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - *destreg = shld_word(*destreg,*shiftreg,shift); - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,shift); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -432,50 +432,50 @@ void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("SHLD\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - destval = fetch_data_long(destoffset); - destval = shld_long(destval,*shiftreg,M.x86.R_CL); - store_data_long(destoffset, destval); - } else { - u16 destval; - u16 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - destval = fetch_data_word(destoffset); - destval = shld_word(destval,*shiftreg,M.x86.R_CL); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*shiftreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL); - } else { - u16 *destreg,*shiftreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL); - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -523,60 +523,60 @@ void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BTS\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval,mask; - u32 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - disp = (s16)*shiftreg >> 5; - srcval = fetch_data_long(srcoffset+disp); - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_long(srcoffset+disp, srcval | mask); - } else { - u16 srcval,mask; - u16 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - disp = (s16)*shiftreg >> 4; - srcval = fetch_data_word(srcoffset+disp); - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_word(srcoffset+disp, srcval | mask); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg,*shiftreg; - u32 mask; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg |= mask; - } else { - u16 *srcreg,*shiftreg; - u16 mask; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg |= mask; - } + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval | mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, srcval | mask); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -596,58 +596,58 @@ void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("SHLD\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - destval = fetch_data_long(destoffset); - destval = shrd_long(destval,*shiftreg,shift); - store_data_long(destoffset, destval); - } else { - u16 destval; - u16 *shiftreg; - - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - destval = fetch_data_word(destoffset); - destval = shrd_word(destval,*shiftreg,shift); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*shiftreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - *destreg = shrd_long(*destreg,*shiftreg,shift); - } else { - u16 *destreg,*shiftreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - shift = fetch_byte_imm(); - DECODE_PRINTF2("%d\n", shift); - TRACE_AND_STEP(); - *destreg = shrd_word(*destreg,*shiftreg,shift); - } + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,shift); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -666,49 +666,49 @@ void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("SHLD\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 destval; - u32 *shiftreg; - - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - destval = fetch_data_long(destoffset); - destval = shrd_long(destval,*shiftreg,M.x86.R_CL); - store_data_long(destoffset, destval); - } else { - u16 destval; - u16 *shiftreg; - - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - destval = fetch_data_word(destoffset); - destval = shrd_word(destval,*shiftreg,M.x86.R_CL); - store_data_word(destoffset, destval); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*shiftreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL); - } else { - u16 *destreg,*shiftreg; - - destreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(",CL\n"); - TRACE_AND_STEP(); - *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL); - } + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -727,80 +727,80 @@ void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("IMUL\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - u32 res_lo,res_hi; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_long(srcoffset); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval); - if (res_hi != 0) { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg; - u16 srcval; - u32 res; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_word(srcoffset); - TRACE_AND_STEP(); - res = (s16)*destreg * (s16)srcval; - if (res > 0xFFFF) { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } - *destreg = (u16)res; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg,*srcreg; - u32 res_lo,res_hi; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_LONG_REGISTER(rl); - TRACE_AND_STEP(); - imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg); - if (res_hi != 0) { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } - *destreg = (u32)res_lo; - } else { - u16 *destreg,*srcreg; - u32 res; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - res = (s16)*destreg * (s16)*srcreg; - if (res > 0xFFFF) { - SET_FLAG(F_CF); - SET_FLAG(F_OF); - } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - } - *destreg = (u16)res; - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16)*destreg * (s16)srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + res = (s16)*destreg * (s16)*srcreg; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -820,16 +820,16 @@ void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("LSS\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - dstreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *dstreg = fetch_data_word(srcoffset); - M.x86.R_SS = fetch_data_word(srcoffset + 2); - } else { /* register to register */ - /* UNDEFINED! */ - TRACE_AND_STEP(); + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -849,59 +849,59 @@ void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BTR\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval,mask; - u32 *shiftreg; - - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - disp = (s16)*shiftreg >> 5; - srcval = fetch_data_long(srcoffset+disp); - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_long(srcoffset+disp, srcval & ~mask); - } else { - u16 srcval,mask; - u16 *shiftreg; - - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - disp = (s16)*shiftreg >> 4; - srcval = fetch_data_word(srcoffset+disp); - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_word(srcoffset+disp, (u16)(srcval & ~mask)); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg,*shiftreg; - u32 mask; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg &= ~mask; - } else { - u16 *srcreg,*shiftreg; - u16 mask; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg &= ~mask; - } + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval & ~mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval & ~mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -921,16 +921,16 @@ void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("LFS\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - dstreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *dstreg = fetch_data_word(srcoffset); - M.x86.R_FS = fetch_data_word(srcoffset + 2); - } else { /* register to register */ - /* UNDEFINED! */ - TRACE_AND_STEP(); + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -950,16 +950,16 @@ void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("LGS\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - dstreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *dstreg = fetch_data_word(srcoffset); - M.x86.R_GS = fetch_data_word(srcoffset + 2); - } else { /* register to register */ - /* UNDEFINED! */ - TRACE_AND_STEP(); + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -978,51 +978,51 @@ void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("MOVZX\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_byte(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { - u16 *destreg; - u16 srcval; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_byte(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u8 *srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } else { - u16 *destreg; - u8 *srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1044,20 +1044,20 @@ void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("MOVZX\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = fetch_data_word(srcoffset); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { /* register to register */ - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = *srcreg; + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1078,122 +1078,122 @@ void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2)) FETCH_DECODE_MODRM(mod, rh, rl); switch (rh) { case 4: - DECODE_PRINTF("BT\t"); - break; + DECODE_PRINTF("BT\t"); + break; case 5: - DECODE_PRINTF("BTS\t"); - break; + DECODE_PRINTF("BTS\t"); + break; case 6: - DECODE_PRINTF("BTR\t"); - break; + DECODE_PRINTF("BTR\t"); + break; case 7: - DECODE_PRINTF("BTC\t"); - break; + DECODE_PRINTF("BTC\t"); + break; default: - DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); - TRACE_REGS(); - printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n", - M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl); - HALT_SYS(); + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n", + M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl); + HALT_SYS(); } if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - shift = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", shift); - TRACE_AND_STEP(); - - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval, mask; - - bit = shift & 0x1F; - srcval = fetch_data_long(srcoffset); - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - switch (rh) { - case 5: - store_data_long(srcoffset, srcval | mask); - break; - case 6: - store_data_long(srcoffset, srcval & ~mask); - break; - case 7: - store_data_long(srcoffset, srcval ^ mask); - break; - default: - break; - } - } else { - u16 srcval, mask; - - bit = shift & 0xF; - srcval = fetch_data_word(srcoffset); - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - switch (rh) { - case 5: - store_data_word(srcoffset, srcval | mask); - break; - case 6: - store_data_word(srcoffset, srcval & ~mask); - break; - case 7: - store_data_word(srcoffset, srcval ^ mask); - break; - default: - break; - } - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg; - u32 mask; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - shift = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", shift); - TRACE_AND_STEP(); - bit = shift & 0x1F; - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - switch (rh) { - case 5: - *srcreg |= mask; - break; - case 6: - *srcreg &= ~mask; - break; - case 7: - *srcreg ^= mask; - break; - default: - break; - } - } else { - u16 *srcreg; - u16 mask; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - shift = fetch_byte_imm(); - DECODE_PRINTF2(",%d\n", shift); - TRACE_AND_STEP(); - bit = shift & 0xF; - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - switch (rh) { - case 5: - *srcreg |= mask; - break; - case 6: - *srcreg &= ~mask; - break; - case 7: - *srcreg ^= mask; - break; - default: - break; - } - } + srcoffset = decode_rmXX_address(mod, rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } else { + u16 srcval, mask; + + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } else { + u16 *srcreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0xF; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1213,59 +1213,59 @@ void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BTC\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval,mask; - u32 *shiftreg; - - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - disp = (s16)*shiftreg >> 5; - srcval = fetch_data_long(srcoffset+disp); - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_long(srcoffset+disp, srcval ^ mask); - } else { - u16 srcval,mask; - u16 *shiftreg; - - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - disp = (s16)*shiftreg >> 4; - srcval = fetch_data_word(srcoffset+disp); - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(srcval & mask,F_CF); - store_data_word(srcoffset+disp, (u16)(srcval ^ mask)); - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg,*shiftreg; - u32 mask; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0x1F; - mask = (0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg ^= mask; - } else { - u16 *srcreg,*shiftreg; - u16 mask; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - shiftreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - bit = *shiftreg & 0xF; - mask = (u16)(0x1 << bit); - CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); - *srcreg ^= mask; - } + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval ^ mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval ^ mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1284,49 +1284,49 @@ void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BSF\n"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval, *dstreg; - - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - srcval = fetch_data_long(srcoffset); - CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); - for(*dstreg = 0; *dstreg < 32; (*dstreg)++) - if ((srcval >> *dstreg) & 1) break; - } else { - u16 srcval, *dstreg; - - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - srcval = fetch_data_word(srcoffset); - CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); - for(*dstreg = 0; *dstreg < 16; (*dstreg)++) - if ((srcval >> *dstreg) & 1) break; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg, *dstreg; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 0; *dstreg < 32; (*dstreg)++) - if ((*srcreg >> *dstreg) & 1) break; - } else { - u16 *srcreg, *dstreg; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 0; *dstreg < 16; (*dstreg)++) - if ((*srcreg >> *dstreg) & 1) break; - } + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *dstreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((*srcreg >> *dstreg) & 1) break; + } else { + u16 *srcreg, *dstreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((*srcreg >> *dstreg) & 1) break; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1345,49 +1345,49 @@ void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("BSF\n"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - srcoffset = decode_rmXX_address(mod, rl); - DECODE_PRINTF(","); - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 srcval, *dstreg; - - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - srcval = fetch_data_long(srcoffset); - CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); - for(*dstreg = 31; *dstreg > 0; (*dstreg)--) - if ((srcval >> *dstreg) & 1) break; - } else { - u16 srcval, *dstreg; - - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - srcval = fetch_data_word(srcoffset); - CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); - for(*dstreg = 15; *dstreg > 0; (*dstreg)--) - if ((srcval >> *dstreg) & 1) break; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *srcreg, *dstreg; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 31; *dstreg > 0; (*dstreg)--) - if ((*srcreg >> *dstreg) & 1) break; - } else { - u16 *srcreg, *dstreg; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 15; *dstreg > 0; (*dstreg)--) - if ((*srcreg >> *dstreg) & 1) break; - } + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg, *dstreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((*srcreg >> *dstreg) & 1) break; + } else { + u16 *srcreg, *dstreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((*srcreg >> *dstreg) & 1) break; + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1406,51 +1406,51 @@ void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("MOVSX\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u32 srcval; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = (s32)((s8)fetch_data_byte(srcoffset)); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { - u16 *destreg; - u16 srcval; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = (s16)((s8)fetch_data_byte(srcoffset)); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } - } else { /* register to register */ - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - u8 *srcreg; - - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = (s32)((s8)*srcreg); - } else { - u16 *destreg; - u8 *srcreg; - - destreg = DECODE_RM_WORD_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_BYTE_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = (s16)((s8)*srcreg); - } + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s16)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s8)*srcreg); + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s16)((s8)*srcreg); + } } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1472,20 +1472,20 @@ void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2)) DECODE_PRINTF("MOVSX\t"); FETCH_DECODE_MODRM(mod, rh, rl); if (mod < 3) { - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcoffset = decode_rmXX_address(mod, rl); - srcval = (s32)((s16)fetch_data_word(srcoffset)); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = srcval; - } else { /* register to register */ - destreg = DECODE_RM_LONG_REGISTER(rh); - DECODE_PRINTF(","); - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = (s32)((s16)*srcreg); + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s16)fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s16)*srcreg); } DECODE_CLEAR_SEGOVR(); END_OF_INSTR(); @@ -1498,13 +1498,13 @@ void (*x86emu_optab2[256])(u8) __attribute__((section(".got2"))) = { /* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */ /* 0x01 */ x86emuOp2_illegal_op, /* Group G (ring 0 PM) */ -/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */ -/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */ +/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */ +/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */ /* 0x04 */ x86emuOp2_illegal_op, /* 0x05 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ -/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */ +/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */ /* 0x07 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ -/* 0x08 */ x86emuOp2_illegal_op, /* invd (ring 0 PM) */ +/* 0x08 */ x86emuOp2_illegal_op, /* invd (ring 0 PM) */ /* 0x09 */ x86emuOp2_illegal_op, /* wbinvd (ring 0 PM) */ /* 0x0a */ x86emuOp2_illegal_op, /* 0x0b */ x86emuOp2_illegal_op, diff --git a/drivers/bios_emulator/x86emu/prim_ops.c b/drivers/bios_emulator/x86emu/prim_ops.c index dc8cea8..e0827d7 100644 --- a/drivers/bios_emulator/x86emu/prim_ops.c +++ b/drivers/bios_emulator/x86emu/prim_ops.c @@ -1,10 +1,10 @@ /**************************************************************************** * -* Realmode X86 Emulator Library +* Realmode X86 Emulator Library * -* Copyright (C) 1991-2004 SciTech Software, Inc. -* Copyright (C) David Mosberger-Tang -* Copyright (C) 1999 Egbert Eich +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich * * ======================================================================== * @@ -14,7 +14,7 @@ * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software -* without specific, written prior permission. The authors makes no +* without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * @@ -28,12 +28,12 @@ * * ======================================================================== * -* Language: ANSI C -* Environment: Any -* Developer: Kendall Bennett +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett * -* Description: This file contains the code to implement the primitive -* machine operations used by the emulation code in ops.c +* Description: This file contains the code to implement the primitive +* machine operations used by the emulation code in ops.c * * Carry Chain Calculation * @@ -48,23 +48,23 @@ * So, given the following table, which represents the addition of two * bits, we can derive a formula for the carry chain. * -* a b cin r cout -* 0 0 0 0 0 -* 0 0 1 1 0 -* 0 1 0 1 0 -* 0 1 1 0 1 -* 1 0 0 1 0 -* 1 0 1 0 1 -* 1 1 0 0 1 -* 1 1 1 1 1 +* a b cin r cout +* 0 0 0 0 0 +* 0 0 1 1 0 +* 0 1 0 1 0 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 1 +* 1 1 0 0 1 +* 1 1 1 1 1 * * Construction of table for cout: * * ab -* r \ 00 01 11 10 +* r \ 00 01 11 10 * |------------------ -* 0 | 0 1 1 1 -* 1 | 0 0 1 0 +* 0 | 0 1 1 1 +* 1 | 0 0 1 0 * * By inspection, one gets: cc = ab + r'(a + b) * @@ -75,25 +75,25 @@ * The following table represents the subtraction of two bits, from * which we can derive a formula for the borrow chain. * -* a b bin r bout -* 0 0 0 0 0 -* 0 0 1 1 1 -* 0 1 0 1 1 -* 0 1 1 0 1 -* 1 0 0 1 0 -* 1 0 1 0 0 -* 1 1 0 0 0 -* 1 1 1 1 1 +* a b bin r bout +* 0 0 0 0 0 +* 0 0 1 1 1 +* 0 1 0 1 1 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 0 +* 1 1 0 0 0 +* 1 1 1 1 1 * * Construction of table for cout: * * ab -* r \ 00 01 11 10 +* r \ 00 01 11 10 * |------------------ -* 0 | 0 1 0 0 -* 1 | 1 1 1 0 +* 0 | 0 1 0 0 +* 1 | 1 1 1 0 * -* By inspection, one gets: bc = a'b + r(a' + b) +* By inspection, one gets: bc = a'b + r(a' + b) * ****************************************************************************/ @@ -115,7 +115,7 @@ static u32 x86emu_parity_tab[8] = }; #define PARITY(x) (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0) -#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1) +#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1) /*----------------------------- Implementation ----------------------------*/ int abs(int v) { @@ -190,7 +190,7 @@ static void calc_carry_chain(int bits, u32 d, u32 s, u32 res, int set_carry) CONDITIONAL_SET_FLAG(XOR2(cc >> (bits - 2)), F_OF); CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); if (set_carry) { - CONDITIONAL_SET_FLAG(res & (1 << bits), F_CF); + CONDITIONAL_SET_FLAG(res & (1 << bits), F_CF); } } @@ -202,7 +202,7 @@ static void calc_borrow_chain(int bits, u32 d, u32 s, u32 res, int set_carry) CONDITIONAL_SET_FLAG(XOR2(bc >> (bits - 2)), F_OF); CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); if (set_carry) { - CONDITIONAL_SET_FLAG(bc & (1 << (bits - 1)), F_CF); + CONDITIONAL_SET_FLAG(bc & (1 << (bits - 1)), F_CF); } } @@ -214,13 +214,13 @@ u16 aaa_word(u16 d) { u16 res; if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { - d += 0x6; - d += 0x100; - SET_FLAG(F_AF); - SET_FLAG(F_CF); + d += 0x6; + d += 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); } res = (u16)(d & 0xFF0F); set_szp_flags_16(res); @@ -235,13 +235,13 @@ u16 aas_word(u16 d) { u16 res; if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { - d -= 0x6; - d -= 0x100; - SET_FLAG(F_AF); - SET_FLAG(F_CF); + d -= 0x6; + d -= 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); } else { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); } res = (u16)(d & 0xFF0F); set_szp_flags_16(res); @@ -308,7 +308,7 @@ u16 adc_word(u16 d, u16 s) res = d + s; if (ACCESS_FLAG(F_CF)) - res++; + res++; set_szp_flags_16((u16)res); calc_carry_chain(16,s,d,res,1); @@ -330,8 +330,8 @@ u32 adc_long(u32 d, u32 s) res = d + s; if (ACCESS_FLAG(F_CF)) { - lo++; - res++; + lo++; + res++; } hi = (lo >> 16) + (d >> 16) + (s >> 16); @@ -485,12 +485,12 @@ u8 daa_byte(u8 d) { u32 res = d; if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { - res += 6; - SET_FLAG(F_AF); + res += 6; + SET_FLAG(F_AF); } if (res > 0x9F || ACCESS_FLAG(F_CF)) { - res += 0x60; - SET_FLAG(F_CF); + res += 0x60; + SET_FLAG(F_CF); } set_szp_flags_8((u8)res); return (u8)res; @@ -503,12 +503,12 @@ Implements the DAS instruction and side effects. u8 das_byte(u8 d) { if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { - d -= 6; - SET_FLAG(F_AF); + d -= 6; + SET_FLAG(F_AF); } if (d > 0x9F || ACCESS_FLAG(F_CF)) { - d -= 0x60; - SET_FLAG(F_CF); + d -= 0x60; + SET_FLAG(F_CF); } set_szp_flags_8(d); return d; @@ -749,45 +749,45 @@ u8 rcl_byte(u8 d, u8 s) original values, this can be expressed as: IF n > 0 - 1) CF <- b_(8-n) + 1) CF <- b_(8-n) 2) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 3) B_(n-1) <- cf 4) B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ res = d; if ((cnt = s % 9) != 0) { - /* extract the new CARRY FLAG. */ - /* CF <- b_(8-n) */ - cf = (d >> (8 - cnt)) & 0x1; - - /* get the low stuff which rotated - into the range B_7 .. B_cnt */ - /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */ - /* note that the right hand side done by the mask */ - res = (d << cnt) & 0xff; - - /* now the high stuff which rotated around - into the positions B_cnt-2 .. B_0 */ - /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ - /* shift it downward, 7-(n-2) = 9-n positions. - and mask off the result before or'ing in. - */ - mask = (1 << (cnt - 1)) - 1; - res |= (d >> (9 - cnt)) & mask; - - /* if the carry flag was set, or it in. */ - if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ - /* B_(n-1) <- cf */ - res |= 1 << (cnt - 1); - } - /* set the new carry flag, based on the variable "cf" */ - CONDITIONAL_SET_FLAG(cf, F_CF); - /* OVERFLOW is set *IFF* cnt==1, then it is the - xor of CF and the most significant bit. Blecck. */ - /* parenthesized this expression since it appears to - be causing OF to be misset */ - CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)), - F_OF); + /* extract the new CARRY FLAG. */ + /* CF <- b_(8-n) */ + cf = (d >> (8 - cnt)) & 0x1; + + /* get the low stuff which rotated + into the range B_7 .. B_cnt */ + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */ + /* note that the right hand side done by the mask */ + res = (d << cnt) & 0xff; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (9 - cnt)) & mask; + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(n-1) <- cf */ + res |= 1 << (cnt - 1); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized this expression since it appears to + be causing OF to be misset */ + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)), + F_OF); } return (u8)res; @@ -803,16 +803,16 @@ u16 rcl_word(u16 d, u8 s) res = d; if ((cnt = s % 17) != 0) { - cf = (d >> (16 - cnt)) & 0x1; - res = (d << cnt) & 0xffff; - mask = (1 << (cnt - 1)) - 1; - res |= (d >> (17 - cnt)) & mask; - if (ACCESS_FLAG(F_CF)) { - res |= 1 << (cnt - 1); - } - CONDITIONAL_SET_FLAG(cf, F_CF); - CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)), - F_OF); + cf = (d >> (16 - cnt)) & 0x1; + res = (d << cnt) & 0xffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (17 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)), + F_OF); } return (u16)res; } @@ -827,16 +827,16 @@ u32 rcl_long(u32 d, u8 s) res = d; if ((cnt = s % 33) != 0) { - cf = (d >> (32 - cnt)) & 0x1; - res = (d << cnt) & 0xffffffff; - mask = (1 << (cnt - 1)) - 1; - res |= (d >> (33 - cnt)) & mask; - if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ - res |= 1 << (cnt - 1); - } - CONDITIONAL_SET_FLAG(cf, F_CF); - CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)), - F_OF); + cf = (d >> (32 - cnt)) & 0x1; + res = (d << cnt) & 0xffffffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (33 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)), + F_OF); } return res; } @@ -867,60 +867,60 @@ u8 rcr_byte(u8 d, u8 s) original values, this can be expressed as: IF n > 0 - 1) CF <- b_(n-1) - 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 1) CF <- b_(n-1) + 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) 3) B_(8-n) <- cf 4) B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ res = d; if ((cnt = s % 9) != 0) { - /* extract the new CARRY FLAG. */ - /* CF <- b_(n-1) */ - if (cnt == 1) { - cf = d & 0x1; - /* note hackery here. Access_flag(..) evaluates to either - 0 if flag not set - non-zero if flag is set. - doing access_flag(..) != 0 casts that into either - 0..1 in any representation of the flags register - (i.e. packed bit array or unpacked.) - */ - ocf = ACCESS_FLAG(F_CF) != 0; - } else - cf = (d >> (cnt - 1)) & 0x1; - - /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */ - /* note that the right hand side done by the mask - This is effectively done by shifting the - object to the right. The result must be masked, - in case the object came in and was treated - as a negative number. Needed??? */ - - mask = (1 << (8 - cnt)) - 1; - res = (d >> cnt) & mask; - - /* now the high stuff which rotated around - into the positions B_cnt-2 .. B_0 */ - /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ - /* shift it downward, 7-(n-2) = 9-n positions. - and mask off the result before or'ing in. - */ - res |= (d << (9 - cnt)); - - /* if the carry flag was set, or it in. */ - if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ - /* B_(8-n) <- cf */ - res |= 1 << (8 - cnt); - } - /* set the new carry flag, based on the variable "cf" */ - CONDITIONAL_SET_FLAG(cf, F_CF); - /* OVERFLOW is set *IFF* cnt==1, then it is the - xor of CF and the most significant bit. Blecck. */ - /* parenthesized... */ - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)), - F_OF); - } + /* extract the new CARRY FLAG. */ + /* CF <- b_(n-1) */ + if (cnt == 1) { + cf = d & 0x1; + /* note hackery here. Access_flag(..) evaluates to either + 0 if flag not set + non-zero if flag is set. + doing access_flag(..) != 0 casts that into either + 0..1 in any representation of the flags register + (i.e. packed bit array or unpacked.) + */ + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */ + /* note that the right hand side done by the mask + This is effectively done by shifting the + object to the right. The result must be masked, + in case the object came in and was treated + as a negative number. Needed??? */ + + mask = (1 << (8 - cnt)) - 1; + res = (d >> cnt) & mask; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + res |= (d << (9 - cnt)); + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(8-n) <- cf */ + res |= 1 << (8 - cnt); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized... */ + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)), + F_OF); + } } return (u8)res; } @@ -937,22 +937,22 @@ u16 rcr_word(u16 d, u8 s) /* rotate right through carry */ res = d; if ((cnt = s % 17) != 0) { - if (cnt == 1) { - cf = d & 0x1; - ocf = ACCESS_FLAG(F_CF) != 0; - } else - cf = (d >> (cnt - 1)) & 0x1; - mask = (1 << (16 - cnt)) - 1; - res = (d >> cnt) & mask; - res |= (d << (17 - cnt)); - if (ACCESS_FLAG(F_CF)) { - res |= 1 << (16 - cnt); - } - CONDITIONAL_SET_FLAG(cf, F_CF); - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)), - F_OF); - } + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (16 - cnt)) - 1; + res = (d >> cnt) & mask; + res |= (d << (17 - cnt)); + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (16 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)), + F_OF); + } } return (u16)res; } @@ -969,23 +969,23 @@ u32 rcr_long(u32 d, u8 s) /* rotate right through carry */ res = d; if ((cnt = s % 33) != 0) { - if (cnt == 1) { - cf = d & 0x1; - ocf = ACCESS_FLAG(F_CF) != 0; - } else - cf = (d >> (cnt - 1)) & 0x1; - mask = (1 << (32 - cnt)) - 1; - res = (d >> cnt) & mask; - if (cnt != 1) - res |= (d << (33 - cnt)); - if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ - res |= 1 << (32 - cnt); - } - CONDITIONAL_SET_FLAG(cf, F_CF); - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)), - F_OF); - } + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (32 - cnt)) - 1; + res = (d >> cnt) & mask; + if (cnt != 1) + res |= (d << (33 - cnt)); + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (32 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)), + F_OF); + } } return res; } @@ -1016,25 +1016,25 @@ u8 rol_byte(u8 d, u8 s) */ res = d; if ((cnt = s % 8) != 0) { - /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */ - res = (d << cnt); - - /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */ - mask = (1 << cnt) - 1; - res |= (d >> (8 - cnt)) & mask; - - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); - /* OVERFLOW is set *IFF* s==1, then it is the - xor of CF and the most significant bit. Blecck. */ - CONDITIONAL_SET_FLAG(s == 1 && - XOR2((res & 0x1) + ((res >> 6) & 0x2)), - F_OF); + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */ + res = (d << cnt); + + /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */ + mask = (1 << cnt) - 1; + res |= (d >> (8 - cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of CF and the most significant bit. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 6) & 0x2)), + F_OF); } if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); } return (u8)res; } @@ -1049,17 +1049,17 @@ u16 rol_word(u16 d, u8 s) res = d; if ((cnt = s % 16) != 0) { - res = (d << cnt); - mask = (1 << cnt) - 1; - res |= (d >> (16 - cnt)) & mask; - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); - CONDITIONAL_SET_FLAG(s == 1 && - XOR2((res & 0x1) + ((res >> 14) & 0x2)), - F_OF); + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (16 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 14) & 0x2)), + F_OF); } if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); } return (u16)res; } @@ -1074,17 +1074,17 @@ u32 rol_long(u32 d, u8 s) res = d; if ((cnt = s % 32) != 0) { - res = (d << cnt); - mask = (1 << cnt) - 1; - res |= (d >> (32 - cnt)) & mask; - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); - CONDITIONAL_SET_FLAG(s == 1 && - XOR2((res & 0x1) + ((res >> 30) & 0x2)), - F_OF); + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (32 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 30) & 0x2)), + F_OF); } if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); } return res; } @@ -1109,28 +1109,28 @@ u8 ror_byte(u8 d, u8 s) The rotate is done mod 8. IF n > 0 - 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) 2) B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ res = d; - if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */ - /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ - res = (d << (8 - cnt)); - - /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */ - mask = (1 << (8 - cnt)) - 1; - res |= (d >> (cnt)) & mask; - - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x80, F_CF); - /* OVERFLOW is set *IFF* s==1, then it is the - xor of the two most significant bits. Blecck. */ - CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF); + if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */ + /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ + res = (d << (8 - cnt)); + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */ + mask = (1 << (8 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of the two most significant bits. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF); } else if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); } return (u8)res; } @@ -1145,15 +1145,15 @@ u16 ror_word(u16 d, u8 s) res = d; if ((cnt = s % 16) != 0) { - res = (d << (16 - cnt)); - mask = (1 << (16 - cnt)) - 1; - res |= (d >> (cnt)) & mask; - CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); - CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF); + res = (d << (16 - cnt)); + mask = (1 << (16 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF); } else if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); } return (u16)res; } @@ -1168,15 +1168,15 @@ u32 ror_long(u32 d, u8 s) res = d; if ((cnt = s % 32) != 0) { - res = (d << (32 - cnt)); - mask = (1 << (32 - cnt)) - 1; - res |= (d >> (cnt)) & mask; - CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); - CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF); + res = (d << (32 - cnt)); + mask = (1 << (32 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF); } else if (s != 0) { - /* set the new carry flag, Note that it is the low order - bit of the result!!! */ - CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); } return res; } @@ -1190,35 +1190,35 @@ u8 shl_byte(u8 d, u8 s) unsigned int cnt, res, cf; if (s < 8) { - cnt = s % 8; - - /* last bit shifted out goes into carry flag */ - if (cnt > 0) { - res = d << cnt; - cf = d & (1 << (8 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_8((u8)res); - } else { - res = (u8) d; - } - - if (cnt == 1) { - /* Needs simplification. */ - CONDITIONAL_SET_FLAG( - (((res & 0x80) == 0x80) ^ - (ACCESS_FLAG(F_CF) != 0)), - /* was (M.x86.R_FLG&F_CF)==F_CF)), */ - F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 8; + + /* last bit shifted out goes into carry flag */ + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (8 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + /* Needs simplification. */ + CONDITIONAL_SET_FLAG( + (((res & 0x80) == 0x80) ^ + (ACCESS_FLAG(F_CF) != 0)), + /* was (M.x86.R_FLG&F_CF)==F_CF)), */ + F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return (u8)res; } @@ -1232,31 +1232,31 @@ u16 shl_word(u16 d, u8 s) unsigned int cnt, res, cf; if (s < 16) { - cnt = s % 16; - if (cnt > 0) { - res = d << cnt; - cf = d & (1 << (16 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_16((u16)res); - } else { - res = (u16) d; - } - - if (cnt == 1) { - CONDITIONAL_SET_FLAG( - (((res & 0x8000) == 0x8000) ^ - (ACCESS_FLAG(F_CF) != 0)), - F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 16; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = (u16) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG( + (((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), + F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return (u16)res; } @@ -1270,28 +1270,28 @@ u32 shl_long(u32 d, u8 s) unsigned int cnt, res, cf; if (s < 32) { - cnt = s % 32; - if (cnt > 0) { - res = d << cnt; - cf = d & (1 << (32 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_32((u32)res); - } else { - res = d; - } - if (cnt == 1) { - CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ - (ACCESS_FLAG(F_CF) != 0)), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 32; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return res; } @@ -1305,28 +1305,28 @@ u8 shr_byte(u8 d, u8 s) unsigned int cnt, res, cf; if (s < 8) { - cnt = s % 8; - if (cnt > 0) { - cf = d & (1 << (cnt - 1)); - res = d >> cnt; - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_8((u8)res); - } else { - res = (u8) d; - } - - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 8; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d >> (s-1)) & 0x1, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d >> (s-1)) & 0x1, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return (u8)res; } @@ -1340,28 +1340,28 @@ u16 shr_word(u16 d, u8 s) unsigned int cnt, res, cf; if (s < 16) { - cnt = s % 16; - if (cnt > 0) { - cf = d & (1 << (cnt - 1)); - res = d >> cnt; - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_16((u16)res); - } else { - res = d; - } - - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); } return (u16)res; } @@ -1375,27 +1375,27 @@ u32 shr_long(u32 d, u8 s) unsigned int cnt, res, cf; if (s < 32) { - cnt = s % 32; - if (cnt > 0) { - cf = d & (1 << (cnt - 1)); - res = d >> cnt; - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_32((u32)res); - } else { - res = d; - } - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); } return res; } @@ -1412,28 +1412,28 @@ u8 sar_byte(u8 d, u8 s) sf = d & 0x80; cnt = s % 8; if (cnt > 0 && cnt < 8) { - mask = (1 << (8 - cnt)) - 1; - cf = d & (1 << (cnt - 1)); - res = (d >> cnt) & mask; - CONDITIONAL_SET_FLAG(cf, F_CF); - if (sf) { - res |= ~mask; - } - set_szp_flags_8((u8)res); + mask = (1 << (8 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_8((u8)res); } else if (cnt >= 8) { - if (sf) { - res = 0xff; - SET_FLAG(F_CF); - CLEAR_FLAG(F_ZF); - SET_FLAG(F_SF); - SET_FLAG(F_PF); - } else { - res = 0; - CLEAR_FLAG(F_CF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); - } + if (sf) { + res = 0xff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } } return (u8)res; } @@ -1450,28 +1450,28 @@ u16 sar_word(u16 d, u8 s) cnt = s % 16; res = d; if (cnt > 0 && cnt < 16) { - mask = (1 << (16 - cnt)) - 1; - cf = d & (1 << (cnt - 1)); - res = (d >> cnt) & mask; - CONDITIONAL_SET_FLAG(cf, F_CF); - if (sf) { - res |= ~mask; - } - set_szp_flags_16((u16)res); + mask = (1 << (16 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_16((u16)res); } else if (cnt >= 16) { - if (sf) { - res = 0xffff; - SET_FLAG(F_CF); - CLEAR_FLAG(F_ZF); - SET_FLAG(F_SF); - SET_FLAG(F_PF); - } else { - res = 0; - CLEAR_FLAG(F_CF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); - } + if (sf) { + res = 0xffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } } return (u16)res; } @@ -1488,28 +1488,28 @@ u32 sar_long(u32 d, u8 s) cnt = s % 32; res = d; if (cnt > 0 && cnt < 32) { - mask = (1 << (32 - cnt)) - 1; - cf = d & (1 << (cnt - 1)); - res = (d >> cnt) & mask; - CONDITIONAL_SET_FLAG(cf, F_CF); - if (sf) { - res |= ~mask; - } - set_szp_flags_32(res); + mask = (1 << (32 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_32(res); } else if (cnt >= 32) { - if (sf) { - res = 0xffffffff; - SET_FLAG(F_CF); - CLEAR_FLAG(F_ZF); - SET_FLAG(F_SF); - SET_FLAG(F_PF); - } else { - res = 0; - CLEAR_FLAG(F_CF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); - } + if (sf) { + res = 0xffffffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } } return res; } @@ -1523,28 +1523,28 @@ u16 shld_word (u16 d, u16 fill, u8 s) unsigned int cnt, res, cf; if (s < 16) { - cnt = s % 16; - if (cnt > 0) { - res = (d << cnt) | (fill >> (16-cnt)); - cf = d & (1 << (16 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_16((u16)res); - } else { - res = d; - } - if (cnt == 1) { - CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ - (ACCESS_FLAG(F_CF) != 0)), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 16; + if (cnt > 0) { + res = (d << cnt) | (fill >> (16-cnt)); + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return (u16)res; } @@ -1558,28 +1558,28 @@ u32 shld_long (u32 d, u32 fill, u8 s) unsigned int cnt, res, cf; if (s < 32) { - cnt = s % 32; - if (cnt > 0) { - res = (d << cnt) | (fill >> (32-cnt)); - cf = d & (1 << (32 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_32((u32)res); - } else { - res = d; - } - if (cnt == 1) { - CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ - (ACCESS_FLAG(F_CF) != 0)), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 32; + if (cnt > 0) { + res = (d << cnt) | (fill >> (32-cnt)); + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); - CLEAR_FLAG(F_OF); - CLEAR_FLAG(F_SF); - SET_FLAG(F_PF); - SET_FLAG(F_ZF); + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); } return res; } @@ -1593,28 +1593,28 @@ u16 shrd_word (u16 d, u16 fill, u8 s) unsigned int cnt, res, cf; if (s < 16) { - cnt = s % 16; - if (cnt > 0) { - cf = d & (1 << (cnt - 1)); - res = (d >> cnt) | (fill << (16 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_16((u16)res); - } else { - res = d; - } - - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); } return (u16)res; } @@ -1628,27 +1628,27 @@ u32 shrd_long (u32 d, u32 fill, u8 s) unsigned int cnt, res, cf; if (s < 32) { - cnt = s % 32; - if (cnt > 0) { - cf = d & (1 << (cnt - 1)); - res = (d >> cnt) | (fill << (32 - cnt)); - CONDITIONAL_SET_FLAG(cf, F_CF); - set_szp_flags_32((u32)res); - } else { - res = d; - } - if (cnt == 1) { - CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); - } else { - CLEAR_FLAG(F_OF); - } + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } } else { - res = 0; - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); - SET_FLAG(F_ZF); - CLEAR_FLAG(F_SF); - CLEAR_FLAG(F_PF); + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); } return res; } @@ -1663,9 +1663,9 @@ u8 sbb_byte(u8 d, u8 s) u32 bc; if (ACCESS_FLAG(F_CF)) - res = d - s - 1; + res = d - s - 1; else - res = d - s; + res = d - s; set_szp_flags_8((u8)res); /* calculate the borrow chain. See note at top */ @@ -1686,9 +1686,9 @@ u16 sbb_word(u16 d, u16 s) u32 bc; if (ACCESS_FLAG(F_CF)) - res = d - s - 1; + res = d - s - 1; else - res = d - s; + res = d - s; set_szp_flags_16((u16)res); /* calculate the borrow chain. See note at top */ @@ -1709,9 +1709,9 @@ u32 sbb_long(u32 d, u32 s) u32 bc; if (ACCESS_FLAG(F_CF)) - res = d - s - 1; + res = d - s - 1; else - res = d - s; + res = d - s; set_szp_flags_32(res); @@ -1880,12 +1880,12 @@ void imul_byte(u8 s) M.x86.R_AX = res; if (((M.x86.R_AL & 0x80) == 0 && M.x86.R_AH == 0x00) || - ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -1900,12 +1900,12 @@ void imul_word(u16 s) M.x86.R_AX = (u16)res; M.x86.R_DX = (u16)(res >> 16); if (((M.x86.R_AX & 0x8000) == 0 && M.x86.R_DX == 0x0000) || - ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFFFF)) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -1915,7 +1915,7 @@ Implements the IMUL instruction and side effects. ****************************************************************************/ void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s) { -#ifdef __HAS_LONG_LONG__ +#ifdef __HAS_LONG_LONG__ s64 res = (s32)d * (s32)s; *res_lo = (u32)res; @@ -1926,11 +1926,11 @@ void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s) u32 rlo_lo,rlo_hi,rhi_lo; if ((d_sign = d & 0x80000000) != 0) - d = -d; + d = -d; d_lo = d & 0xFFFF; d_hi = d >> 16; if ((s_sign = s & 0x80000000) != 0) - s = -s; + s = -s; s_lo = s & 0xFFFF; s_hi = s >> 16; rlo_lo = d_lo * s_lo; @@ -1939,11 +1939,11 @@ void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s) *res_lo = (rlo_hi << 16) | (rlo_lo & 0xFFFF); *res_hi = rhi_lo; if (d_sign != s_sign) { - d = ~*res_lo; - s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16); - *res_lo = ~*res_lo+1; - *res_hi = ~*res_hi+(s >> 16); - } + d = ~*res_lo; + s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16); + *res_lo = ~*res_lo+1; + *res_hi = ~*res_hi+(s >> 16); + } #endif } @@ -1955,12 +1955,12 @@ void imul_long(u32 s) { imul_long_direct(&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s); if (((M.x86.R_EAX & 0x80000000) == 0 && M.x86.R_EDX == 0x00000000) || - ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFFFFFFFF)) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFFFFFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -1974,11 +1974,11 @@ void mul_byte(u8 s) M.x86.R_AX = res; if (M.x86.R_AH == 0) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -1993,11 +1993,11 @@ void mul_word(u16 s) M.x86.R_AX = (u16)res; M.x86.R_DX = (u16)(res >> 16); if (M.x86.R_DX == 0) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -2007,7 +2007,7 @@ Implements the MUL instruction and side effects. ****************************************************************************/ void mul_long(u32 s) { -#ifdef __HAS_LONG_LONG__ +#ifdef __HAS_LONG_LONG__ u64 res = (u32)M.x86.R_EAX * (u32)s; M.x86.R_EAX = (u32)res; @@ -2029,11 +2029,11 @@ void mul_long(u32 s) M.x86.R_EDX = rhi_lo; #endif if (M.x86.R_EDX == 0) { - CLEAR_FLAG(F_CF); - CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); } else { - SET_FLAG(F_CF); - SET_FLAG(F_OF); + SET_FLAG(F_CF); + SET_FLAG(F_OF); } } @@ -2047,14 +2047,14 @@ void idiv_byte(u8 s) dvd = (s16)M.x86.R_AX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (s8)s; mod = dvd % (s8)s; if (abs(div) > 0x7f) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } M.x86.R_AL = (s8) div; M.x86.R_AH = (s8) mod; @@ -2070,14 +2070,14 @@ void idiv_word(u16 s) dvd = (((s32)M.x86.R_DX) << 16) | M.x86.R_AX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (s16)s; mod = dvd % (s16)s; if (abs(div) > 0x7fff) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } CLEAR_FLAG(F_CF); CLEAR_FLAG(F_SF); @@ -2094,19 +2094,19 @@ Implements the IDIV instruction and side effects. ****************************************************************************/ void idiv_long(u32 s) { -#ifdef __HAS_LONG_LONG__ +#ifdef __HAS_LONG_LONG__ s64 dvd, div, mod; dvd = (((s64)M.x86.R_EDX) << 32) | M.x86.R_EAX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (s32)s; mod = dvd % (s32)s; if (abs(div) > 0x7fffffff) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } #else s32 div = 0, mod; @@ -2120,32 +2120,32 @@ void idiv_long(u32 s) int carry; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } do { - div <<= 1; - carry = (l_dvd >= l_s) ? 0 : 1; - - if (abs_h_dvd < (h_s + carry)) { - h_s >>= 1; - l_s = abs_s << (--counter); - continue; - } else { - abs_h_dvd -= (h_s + carry); - l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) - : (l_dvd - l_s); - h_s >>= 1; - l_s = abs_s << (--counter); - div |= 1; - continue; - } + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (abs_h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = abs_s << (--counter); + continue; + } else { + abs_h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = abs_s << (--counter); + div |= 1; + continue; + } } while (counter > -1); /* overflow */ if (abs_h_dvd || (l_dvd > abs_s)) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } /* sign */ div |= ((h_dvd & 0x10000000) ^ (s & 0x10000000)); @@ -2172,14 +2172,14 @@ void div_byte(u8 s) dvd = M.x86.R_AX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (u8)s; mod = dvd % (u8)s; if (abs(div) > 0xff) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } M.x86.R_AL = (u8)div; M.x86.R_AH = (u8)mod; @@ -2195,14 +2195,14 @@ void div_word(u16 s) dvd = (((u32)M.x86.R_DX) << 16) | M.x86.R_AX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (u16)s; mod = dvd % (u16)s; if (abs(div) > 0xffff) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } CLEAR_FLAG(F_CF); CLEAR_FLAG(F_SF); @@ -2219,19 +2219,19 @@ Implements the DIV instruction and side effects. ****************************************************************************/ void div_long(u32 s) { -#ifdef __HAS_LONG_LONG__ +#ifdef __HAS_LONG_LONG__ u64 dvd, div, mod; dvd = (((u64)M.x86.R_EDX) << 32) | M.x86.R_EAX; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } div = dvd / (u32)s; mod = dvd % (u32)s; if (abs(div) > 0xffffffff) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } #else s32 div = 0, mod; @@ -2244,32 +2244,32 @@ void div_long(u32 s) int carry; if (s == 0) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } do { - div <<= 1; - carry = (l_dvd >= l_s) ? 0 : 1; - - if (h_dvd < (h_s + carry)) { - h_s >>= 1; - l_s = s << (--counter); - continue; - } else { - h_dvd -= (h_s + carry); - l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) - : (l_dvd - l_s); - h_s >>= 1; - l_s = s << (--counter); - div |= 1; - continue; - } + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = s << (--counter); + continue; + } else { + h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = s << (--counter); + div |= 1; + continue; + } } while (counter > -1); /* overflow */ if (h_dvd || (l_dvd > s)) { - x86emu_intr_raise(0); - return; + x86emu_intr_raise(0); + return; } mod = l_dvd; #endif @@ -2291,11 +2291,11 @@ Implements the IN string instruction and side effects. static void single_in(int size) { if(size == 1) - store_data_byte_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inb)(M.x86.R_DX)); + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inb)(M.x86.R_DX)); else if (size == 2) - store_data_word_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inw)(M.x86.R_DX)); + store_data_word_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inw)(M.x86.R_DX)); else - store_data_long_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inl)(M.x86.R_DX)); + store_data_long_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inl)(M.x86.R_DX)); } void ins(int size) @@ -2303,26 +2303,26 @@ void ins(int size) int inc = size; if (ACCESS_FLAG(F_DF)) { - inc = -size; + inc = -size; } if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* in until CX is ZERO. */ - u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? - M.x86.R_ECX : M.x86.R_CX); - - while (count--) { - single_in(size); - M.x86.R_DI += inc; - } - M.x86.R_CX = 0; - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_ECX = 0; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* in until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + + while (count--) { + single_in(size); + M.x86.R_DI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - single_in(size); - M.x86.R_DI += inc; + single_in(size); + M.x86.R_DI += inc; } } @@ -2346,31 +2346,31 @@ void outs(int size) int inc = size; if (ACCESS_FLAG(F_DF)) { - inc = -size; + inc = -size; } if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { - /* dont care whether REPE or REPNE */ - /* out until CX is ZERO. */ - u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? - M.x86.R_ECX : M.x86.R_CX); - while (count--) { - single_out(size); - M.x86.R_SI += inc; - } - M.x86.R_CX = 0; - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - M.x86.R_ECX = 0; - } - M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + /* dont care whether REPE or REPNE */ + /* out until CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_PREFIX_DATA) ? + M.x86.R_ECX : M.x86.R_CX); + while (count--) { + single_out(size); + M.x86.R_SI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); } else { - single_out(size); - M.x86.R_SI += inc; + single_out(size); + M.x86.R_SI += inc; } } /**************************************************************************** PARAMETERS: -addr - Address to fetch word from +addr - Address to fetch word from REMARKS: Fetches a word from emulator memory using an absolute address. @@ -2443,4 +2443,3 @@ DB( if (CHECK_SP_ACCESS()) M.x86.R_SP += 4; return res; } - -- cgit v1.1 From ce981dc857adfc8036ca2f6d5d5a06c2a8aa77d6 Mon Sep 17 00:00:00 2001 From: Jason Jin Date: Wed, 8 Aug 2007 08:33:11 +0800 Subject: Add CONFIG_BIOSEMU define to guard all the bios emulator code Signed-off-by: Jason Jin This patch fix the compile issue on the board that did not enable the bios emulator --- drivers/bios_emulator/besys.c | 2 ++ drivers/bios_emulator/bios.c | 2 ++ drivers/bios_emulator/biosemu.c | 3 +++ drivers/bios_emulator/x86emu/debug.c | 4 ++++ drivers/bios_emulator/x86emu/decode.c | 4 ++++ drivers/bios_emulator/x86emu/ops.c | 5 +++++ drivers/bios_emulator/x86emu/ops2.c | 4 ++++ drivers/bios_emulator/x86emu/prim_ops.c | 4 ++++ drivers/bios_emulator/x86emu/sys.c | 4 ++++ 9 files changed, 32 insertions(+) (limited to 'drivers/bios_emulator') diff --git a/drivers/bios_emulator/besys.c b/drivers/bios_emulator/besys.c index 2a8e1a0..4c4bc8d 100644 --- a/drivers/bios_emulator/besys.c +++ b/drivers/bios_emulator/besys.c @@ -49,6 +49,7 @@ #include "biosemui.h" +#if defined(CONFIG_BIOSEMU) /*------------------------- Global Variables ------------------------------*/ #ifndef __i386__ @@ -717,3 +718,4 @@ void X86API BE_outl(X86EMU_pioAddr port, u32 val) #endif LOG_outpd(port, val); } +#endif diff --git a/drivers/bios_emulator/bios.c b/drivers/bios_emulator/bios.c index ed5437e..7aa1bfb2e 100644 --- a/drivers/bios_emulator/bios.c +++ b/drivers/bios_emulator/bios.c @@ -43,6 +43,7 @@ #include "biosemui.h" +#if defined(CONFIG_BIOSEMU) /*----------------------------- Implementation ----------------------------*/ /**************************************************************************** @@ -319,3 +320,4 @@ void _BE_bios_init(u32 * intrTab) bios_intr_tab[0x6D] = int10; X86EMU_setupIntrFuncs(bios_intr_tab); } +#endif diff --git a/drivers/bios_emulator/biosemu.c b/drivers/bios_emulator/biosemu.c index 06d4ad3..4c3aedf 100644 --- a/drivers/bios_emulator/biosemu.c +++ b/drivers/bios_emulator/biosemu.c @@ -48,6 +48,8 @@ #include "biosemui.h" #include +#if defined(CONFIG_BIOSEMU) + BE_sysEnv _BE_env = {{0}}; static X86EMU_memFuncs _BE_mem __attribute__((section(".got2"))) = { BE_rdb, @@ -368,3 +370,4 @@ int X86API BE_int86x(int intno, RMREGS * in, RMREGS * out, RMSREGS * sregs) sregs->gs = M.x86.R_GS; return out->x.ax; } +#endif diff --git a/drivers/bios_emulator/x86emu/debug.c b/drivers/bios_emulator/x86emu/debug.c index 0f58a69..915739c 100644 --- a/drivers/bios_emulator/x86emu/debug.c +++ b/drivers/bios_emulator/x86emu/debug.c @@ -40,6 +40,8 @@ #include "x86emu/x86emui.h" #include +#if defined(CONFIG_BIOSEMU) + /*----------------------------- Implementation ----------------------------*/ #ifdef DEBUG @@ -459,3 +461,5 @@ void x86emu_dump_xregs(void) printk("NC "); printk("\n"); } + +#endif diff --git a/drivers/bios_emulator/x86emu/decode.c b/drivers/bios_emulator/x86emu/decode.c index 1e2dcfe..879f0a0 100644 --- a/drivers/bios_emulator/x86emu/decode.c +++ b/drivers/bios_emulator/x86emu/decode.c @@ -39,6 +39,8 @@ #include "x86emu/x86emui.h" +#if defined(CONFIG_BIOSEMU) + /*----------------------------- Implementation ----------------------------*/ /**************************************************************************** @@ -1142,3 +1144,5 @@ unsigned decode_rmXX_address(int mod, int rm) return decode_rm01_address(rm); return decode_rm10_address(rm); } + +#endif diff --git a/drivers/bios_emulator/x86emu/ops.c b/drivers/bios_emulator/x86emu/ops.c index d1380ce..d334fb5 100644 --- a/drivers/bios_emulator/x86emu/ops.c +++ b/drivers/bios_emulator/x86emu/ops.c @@ -76,6 +76,9 @@ ****************************************************************************/ #include "x86emu/x86emui.h" + +#if defined(CONFIG_BIOSEMU) + /*----------------------------- Implementation ----------------------------*/ /* constant arrays to do several instructions in just one function */ @@ -5429,3 +5432,5 @@ void (*x86emu_optab[256])(u8) __attribute__ ((section(".got2"))) = /* 0xfe */ x86emuOp_opcFE_byte_RM, /* 0xff */ x86emuOp_opcFF_word_RM, }; + +#endif diff --git a/drivers/bios_emulator/x86emu/ops2.c b/drivers/bios_emulator/x86emu/ops2.c index 631a340..81c0d49 100644 --- a/drivers/bios_emulator/x86emu/ops2.c +++ b/drivers/bios_emulator/x86emu/ops2.c @@ -46,6 +46,8 @@ #include "x86emu/x86emui.h" +#if defined(CONFIG_BIOSEMU) + /*----------------------------- Implementation ----------------------------*/ /**************************************************************************** @@ -1768,3 +1770,5 @@ void (*x86emu_optab2[256])(u8) __attribute__((section(".got2"))) = /* 0xfe */ x86emuOp2_illegal_op, /* 0xff */ x86emuOp2_illegal_op, }; + +#endif diff --git a/drivers/bios_emulator/x86emu/prim_ops.c b/drivers/bios_emulator/x86emu/prim_ops.c index e0827d7..c1152ea 100644 --- a/drivers/bios_emulator/x86emu/prim_ops.c +++ b/drivers/bios_emulator/x86emu/prim_ops.c @@ -100,6 +100,8 @@ #define PRIM_OPS_NO_REDEFINE_ASM #include "x86emu/x86emui.h" +#if defined(CONFIG_BIOSEMU) + /*------------------------- Global Variables ------------------------------*/ static u32 x86emu_parity_tab[8] = @@ -2443,3 +2445,5 @@ DB( if (CHECK_SP_ACCESS()) M.x86.R_SP += 4; return res; } + +#endif diff --git a/drivers/bios_emulator/x86emu/sys.c b/drivers/bios_emulator/x86emu/sys.c index bb7fcd9..566389f 100644 --- a/drivers/bios_emulator/x86emu/sys.c +++ b/drivers/bios_emulator/x86emu/sys.c @@ -41,6 +41,8 @@ #include "x86emu/x86emui.h" +#if defined(CONFIG_BIOSEMU) + /*------------------------- Global Variables ------------------------------*/ X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */ @@ -320,3 +322,5 @@ void X86EMU_prepareForInt(int num) M.x86.R_IP = mem_access_word(num * 4); M.x86.intr = 0; } + +#endif -- cgit v1.1 From 0dc4279b08ff82472bec2e2c90858602459febe8 Mon Sep 17 00:00:00 2001 From: Jason Jin Date: Wed, 8 Aug 2007 09:01:46 +0800 Subject: Minor fix for bios emulator makefile Add $(obj) to LIB avoiding objects be built in the source dir Signed-off-by: Jason Jin --- drivers/bios_emulator/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/bios_emulator') diff --git a/drivers/bios_emulator/Makefile b/drivers/bios_emulator/Makefile index ba7d436..586e83b 100644 --- a/drivers/bios_emulator/Makefile +++ b/drivers/bios_emulator/Makefile @@ -1,6 +1,6 @@ include $(TOPDIR)/config.mk -LIB := libatibiosemu.a +LIB := $(obj)libatibiosemu.a X86DIR = ./x86emu -- cgit v1.1