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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/m68k/kernel/entry_no.S
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/*

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 *  linux/arch/m68knommu/kernel/entry.S

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 *

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 *  Copyright (C) 1999-2002, Greg Ungerer ([email protected])

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 *  Copyright (C) 1998  D. Jeff Dionne <[email protected]>,

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 *                      Kenneth Albanowski <[email protected]>,

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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 ([email protected])

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 * 5307 fixes by David W. Miller

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 * linux 2.4 support David McCullough <[email protected]>

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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

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	moveq	#-1,%d0

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	movel	%d0,%sp@(PT_OFF_ORIG_D0)

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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

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	moveq	#-1,%d0

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	movel	%d0,%sp@(PT_OFF_ORIG_D0)

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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

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	moveq	#-1,%d0

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	movel	%d0,%sp@(PT_OFF_ORIG_D0)

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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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