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 <Jason.jin@freescale.com>

9 files changed, 2478 insertions, 0 deletions

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 <asm/types.h>
+#include <common.h>
+#include <pci.h>
+#include <asm/io.h>
+#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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#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 */