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Diffstat (limited to 'arch/m68knommu/kernel/entry.S')
| -rw-r--r-- | arch/m68knommu/kernel/entry.S | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/m68knommu/kernel/entry.S b/arch/m68knommu/kernel/entry.S new file mode 100644 index 00000000000..8b1f47239b9 --- /dev/null +++ b/arch/m68knommu/kernel/entry.S @@ -0,0 +1,143 @@ +/* + * linux/arch/m68knommu/kernel/entry.S + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * + * Based on: + * + * linux/arch/m68k/kernel/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * ColdFire support by Greg Ungerer (gerg@snapgear.com) + * 5307 fixes by David W. Miller + * linux 2.4 support David McCullough <davidm@snapgear.com> + */ + +#include <linux/config.h> +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/thread_info.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +.text + +.globl buserr +.globl trap +.globl ret_from_exception +.globl ret_from_signal +.globl sys_fork +.globl sys_clone +.globl sys_vfork + +ENTRY(buserr) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr buserr_c + addql #4,%sp + jra ret_from_exception + +ENTRY(trap) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr trap_c + addql #4,%sp + jra ret_from_exception + +#ifdef TRAP_DBG_INTERRUPT + +.globl dbginterrupt +ENTRY(dbginterrupt) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr dbginterrupt_c + addql #4,%sp + jra ret_from_exception +#endif + +ENTRY(reschedule) + /* save top of frame */ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + pea ret_from_exception + jmp schedule + +ENTRY(ret_from_fork) + movel %d1,%sp@- + jsr schedule_tail + addql #4,%sp + jra ret_from_exception + +ENTRY(sys_fork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_fork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_vfork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_vfork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_clone) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_clone + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_sigsuspend) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr do_sigsuspend + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_rt_sigsuspend) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr do_rt_sigsuspend + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_sigreturn) + SAVE_SWITCH_STACK + jbsr do_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_rt_sigreturn) + SAVE_SWITCH_STACK + jbsr do_rt_sigreturn + RESTORE_SWITCH_STACK + rts + |