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- /*
- * 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/linkage.h>
- #include <asm/errno.h>
- #include <asm/setup.h>
- #include <asm/segment.h>
- #include <asm/asm-offsets.h>
- #include <asm/entry.h>
- #include <asm/unistd.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_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_ORIG_D0)
- movel %sp,%sp@- /* stack frame pointer argument */
- jsr buserr_c
- addql #4,%sp
- jra ret_from_exception
- ENTRY(trap)
- SAVE_ALL_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_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_INT
- moveq #-1,%d0
- movel %d0,%sp@(PT_OFF_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_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
- ENTRY(ret_from_user_signal)
- moveq #__NR_sigreturn,%d0
- trap #0
- ENTRY(ret_from_user_rt_signal)
- movel #__NR_rt_sigreturn,%d0
- trap #0
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