46729d0eb3
Commit 61619b1207 ("m68k: merge mmu and
non-mmu include/asm/entry.h files") made the trap entry code basically
the same for mmu and non-mmu builds. This means we no longer need code
to mark the stack frame as "system-call" type or other in the non-mmu
trap handling entry points. This is done in the SAVE_ALL_INT macro now.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
128 lines
2.4 KiB
ArmAsm
128 lines
2.4 KiB
ArmAsm
/*
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* linux/arch/m68knommu/kernel/entry.S
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*
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* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
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* Kenneth Albanowski <kjahds@kjahds.com>,
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* Copyright (C) 2000 Lineo Inc. (www.lineo.com)
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*
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* Based on:
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*
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* linux/arch/m68k/kernel/entry.S
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file README.legal in the main directory of this archive
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* for more details.
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*
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* Linux/m68k support by Hamish Macdonald
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*
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* 68060 fixes by Jesper Skov
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* ColdFire support by Greg Ungerer (gerg@snapgear.com)
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* 5307 fixes by David W. Miller
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* linux 2.4 support David McCullough <davidm@snapgear.com>
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*/
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#include <linux/linkage.h>
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#include <asm/errno.h>
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#include <asm/setup.h>
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#include <asm/segment.h>
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#include <asm/asm-offsets.h>
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#include <asm/entry.h>
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#include <asm/unistd.h>
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.text
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.globl buserr
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.globl trap
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.globl ret_from_exception
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.globl ret_from_signal
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.globl sys_fork
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.globl sys_clone
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.globl sys_vfork
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ENTRY(buserr)
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SAVE_ALL_INT
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr buserr_c
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addql #4,%sp
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jra ret_from_exception
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ENTRY(trap)
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SAVE_ALL_INT
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr trap_c
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addql #4,%sp
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jra ret_from_exception
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#ifdef TRAP_DBG_INTERRUPT
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.globl dbginterrupt
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ENTRY(dbginterrupt)
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SAVE_ALL_INT
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr dbginterrupt_c
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addql #4,%sp
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jra ret_from_exception
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#endif
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ENTRY(reschedule)
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/* save top of frame */
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pea %sp@
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jbsr set_esp0
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addql #4,%sp
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pea ret_from_exception
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jmp schedule
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ENTRY(ret_from_fork)
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movel %d1,%sp@-
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jsr schedule_tail
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addql #4,%sp
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jra ret_from_exception
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ENTRY(sys_fork)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_fork
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_vfork)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_vfork
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_clone)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_clone
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_sigreturn)
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SAVE_SWITCH_STACK
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jbsr do_sigreturn
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_rt_sigreturn)
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SAVE_SWITCH_STACK
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jbsr do_rt_sigreturn
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RESTORE_SWITCH_STACK
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rts
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ENTRY(ret_from_user_signal)
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moveq #__NR_sigreturn,%d0
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trap #0
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ENTRY(ret_from_user_rt_signal)
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movel #__NR_rt_sigreturn,%d0
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trap #0
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