/* * U-boot - interrupt.S Processing of interrupts and exception handling * * Copyright (c) 2005-2007 Analog Devices Inc. * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * This file is based on interrupt.S * * Copyright (C) 2003 Metrowerks, Inc. <mwaddel@metrowerks.com> * Copyright (C) 2002 Arcturus Networks Ltd. Ted Ma <mated@sympatico.ca> * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>, * Kenneth Albanowski <kjahds@kjahds.com>, * The Silver Hammer Group, Ltd. * * (c) 1995, Dionne & Associates * (c) 1995, DKG Display Tech. * * This file is also based on exception.asm * (C) Copyright 2001-2005 - Analog Devices, Inc. All rights reserved. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #define ASSEMBLY #include <config.h> #include <asm/blackfin.h> #include <asm/entry.h> .global _blackfin_irq_panic; .text .align 2 #ifndef CONFIG_KGDB .global _evt_emulation _evt_emulation: SAVE_CONTEXT r0 = 0; r1 = seqstat; sp += -12; call _blackfin_irq_panic; sp += 12; rte; #endif .global _evt_nmi _evt_nmi: SAVE_CONTEXT r0 = 2; r1 = RETN; sp += -12; call _blackfin_irq_panic; sp += 12; _evt_nmi_exit: rtn; .global _trap _trap: SAVE_ALL_SYS r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ sp += -12; call _trap_c sp += 12; RESTORE_ALL_SYS rtx; .global _evt_rst _evt_rst: SAVE_CONTEXT r0 = 1; r1 = RETN; sp += -12; call _do_reset; sp += 12; _evt_rst_exit: rtn; irq_panic: r0 = 3; r1 = sp; sp += -12; call _blackfin_irq_panic; sp += 12; .global _evt_ivhw _evt_ivhw: SAVE_CONTEXT RAISE 14; _evt_ivhw_exit: rti; .global _evt_timer _evt_timer: SAVE_CONTEXT r0 = 6; sp += -12; /* Polling method used now. */ /* call timer_int; */ sp += 12; RESTORE_CONTEXT rti; nop; .global _evt_evt7 _evt_evt7: SAVE_CONTEXT r0 = 7; sp += -12; call _process_int; sp += 12; evt_evt7_exit: RESTORE_CONTEXT rti; .global _evt_evt8 _evt_evt8: SAVE_CONTEXT r0 = 8; sp += -12; call _process_int; sp += 12; evt_evt8_exit: RESTORE_CONTEXT rti; .global _evt_evt9 _evt_evt9: SAVE_CONTEXT r0 = 9; sp += -12; call _process_int; sp += 12; evt_evt9_exit: RESTORE_CONTEXT rti; .global _evt_evt10 _evt_evt10: SAVE_CONTEXT r0 = 10; sp += -12; call _process_int; sp += 12; evt_evt10_exit: RESTORE_CONTEXT rti; .global _evt_evt11 _evt_evt11: SAVE_CONTEXT r0 = 11; sp += -12; call _process_int; sp += 12; evt_evt11_exit: RESTORE_CONTEXT rti; .global _evt_evt12 _evt_evt12: SAVE_CONTEXT r0 = 12; sp += -12; call _process_int; sp += 12; evt_evt12_exit: RESTORE_CONTEXT rti; .global _evt_evt13 _evt_evt13: SAVE_CONTEXT r0 = 13; sp += -12; call _process_int; sp += 12; evt_evt13_exit: RESTORE_CONTEXT rti; .global _evt_system_call _evt_system_call: [--sp] = r0; [--SP] = RETI; r0 = [sp++]; r0 += 2; [--sp] = r0; RETI = [SP++]; r0 = [SP++]; SAVE_CONTEXT sp += -12; call _exception_handle; sp += 12; RESTORE_CONTEXT RTI; evt_system_call_exit: rti; .global _evt_soft_int1 _evt_soft_int1: [--sp] = r0; [--SP] = RETI; r0 = [sp++]; r0 += 2; [--sp] = r0; RETI = [SP++]; r0 = [SP++]; SAVE_CONTEXT sp += -12; call _exception_handle; sp += 12; RESTORE_CONTEXT RTI; evt_soft_int1_exit: rti;