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1/*
2 * linux/arch/m68knommu/kernel/entry.S
3 *
4 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
5 * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
6 * Kenneth Albanowski <kjahds@kjahds.com>,
7 * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
8 *
9 * Based on:
10 *
11 * linux/arch/m68k/kernel/entry.S
12 *
13 * Copyright (C) 1991, 1992 Linus Torvalds
14 *
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file README.legal in the main directory of this archive
17 * for more details.
18 *
19 * Linux/m68k support by Hamish Macdonald
20 *
21 * 68060 fixes by Jesper Skov
22 * ColdFire support by Greg Ungerer (gerg@snapgear.com)
23 * 5307 fixes by David W. Miller
24 * linux 2.4 support David McCullough <davidm@snapgear.com>
25 */
26
27#include <linux/linkage.h>
28#include <asm/errno.h>
29#include <asm/setup.h>
30#include <asm/segment.h>
31#include <asm/asm-offsets.h>
32#include <asm/entry.h>
33#include <asm/unistd.h>
34
35.text
36
37.globl buserr
38.globl trap
39.globl ret_from_exception
40.globl ret_from_signal
41.globl sys_fork
42.globl sys_clone
43.globl sys_vfork
44
45ENTRY(buserr)
46 SAVE_ALL
47 moveq #-1,%d0
48 movel %d0,%sp@(PT_OFF_ORIG_D0)
49 movel %sp,%sp@- /* stack frame pointer argument */
50 jsr buserr_c
51 addql #4,%sp
52 jra ret_from_exception
53
54ENTRY(trap)
55 SAVE_ALL
56 moveq #-1,%d0
57 movel %d0,%sp@(PT_OFF_ORIG_D0)
58 movel %sp,%sp@- /* stack frame pointer argument */
59 jsr trap_c
60 addql #4,%sp
61 jra ret_from_exception
62
63#ifdef TRAP_DBG_INTERRUPT
64
65.globl dbginterrupt
66ENTRY(dbginterrupt)
67 SAVE_ALL
68 moveq #-1,%d0
69 movel %d0,%sp@(PT_OFF_ORIG_D0)
70 movel %sp,%sp@- /* stack frame pointer argument */
71 jsr dbginterrupt_c
72 addql #4,%sp
73 jra ret_from_exception
74#endif
75
76ENTRY(reschedule)
77 /* save top of frame */
78 pea %sp@
79 jbsr set_esp0
80 addql #4,%sp
81 pea ret_from_exception
82 jmp schedule
83
84ENTRY(ret_from_fork)
85 movel %d1,%sp@-
86 jsr schedule_tail
87 addql #4,%sp
88 jra ret_from_exception
89
90ENTRY(sys_fork)
91 SAVE_SWITCH_STACK
92 pea %sp@(SWITCH_STACK_SIZE)
93 jbsr m68k_fork
94 addql #4,%sp
95 RESTORE_SWITCH_STACK
96 rts
97
98ENTRY(sys_vfork)
99 SAVE_SWITCH_STACK
100 pea %sp@(SWITCH_STACK_SIZE)
101 jbsr m68k_vfork
102 addql #4,%sp
103 RESTORE_SWITCH_STACK
104 rts
105
106ENTRY(sys_clone)
107 SAVE_SWITCH_STACK
108 pea %sp@(SWITCH_STACK_SIZE)
109 jbsr m68k_clone
110 addql #4,%sp
111 RESTORE_SWITCH_STACK
112 rts
113
114ENTRY(sys_sigreturn)
115 SAVE_SWITCH_STACK
116 jbsr do_sigreturn
117 RESTORE_SWITCH_STACK
118 rts
119
120ENTRY(sys_rt_sigreturn)
121 SAVE_SWITCH_STACK
122 jbsr do_rt_sigreturn
123 RESTORE_SWITCH_STACK
124 rts
125
126ENTRY(ret_from_user_signal)
127 moveq #__NR_sigreturn,%d0
128 trap #0
129
130ENTRY(ret_from_user_rt_signal)
131 movel #__NR_rt_sigreturn,%d0
132 trap #0
133
1/*
2 * linux/arch/m68knommu/kernel/entry.S
3 *
4 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
5 * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
6 * Kenneth Albanowski <kjahds@kjahds.com>,
7 * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
8 *
9 * Based on:
10 *
11 * linux/arch/m68k/kernel/entry.S
12 *
13 * Copyright (C) 1991, 1992 Linus Torvalds
14 *
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file README.legal in the main directory of this archive
17 * for more details.
18 *
19 * Linux/m68k support by Hamish Macdonald
20 *
21 * 68060 fixes by Jesper Skov
22 * ColdFire support by Greg Ungerer (gerg@snapgear.com)
23 * 5307 fixes by David W. Miller
24 * linux 2.4 support David McCullough <davidm@snapgear.com>
25 */
26
27#include <linux/linkage.h>
28#include <asm/errno.h>
29#include <asm/setup.h>
30#include <asm/segment.h>
31#include <asm/asm-offsets.h>
32#include <asm/entry.h>
33#include <asm/unistd.h>
34
35.text
36
37.globl buserr
38.globl trap
39.globl ret_from_exception
40.globl ret_from_signal
41.globl sys_fork
42.globl sys_clone
43.globl sys_vfork
44
45ENTRY(buserr)
46 SAVE_ALL_INT
47 GET_CURRENT(%d0)
48 movel %sp,%sp@- /* stack frame pointer argument */
49 jsr buserr_c
50 addql #4,%sp
51 jra ret_from_exception
52
53ENTRY(trap)
54 SAVE_ALL_INT
55 GET_CURRENT(%d0)
56 movel %sp,%sp@- /* stack frame pointer argument */
57 jsr trap_c
58 addql #4,%sp
59 jra ret_from_exception
60
61#ifdef TRAP_DBG_INTERRUPT
62
63.globl dbginterrupt
64ENTRY(dbginterrupt)
65 SAVE_ALL_INT
66 GET_CURRENT(%d0)
67 movel %sp,%sp@- /* stack frame pointer argument */
68 jsr dbginterrupt_c
69 addql #4,%sp
70 jra ret_from_exception
71#endif
72
73ENTRY(reschedule)
74 /* save top of frame */
75 pea %sp@
76 jbsr set_esp0
77 addql #4,%sp
78 pea ret_from_exception
79 jmp schedule
80
81ENTRY(ret_from_fork)
82 movel %d1,%sp@-
83 jsr schedule_tail
84 addql #4,%sp
85 jra ret_from_exception
86
87ENTRY(sys_fork)
88 SAVE_SWITCH_STACK
89 pea %sp@(SWITCH_STACK_SIZE)
90 jbsr m68k_fork
91 addql #4,%sp
92 RESTORE_SWITCH_STACK
93 rts
94
95ENTRY(sys_vfork)
96 SAVE_SWITCH_STACK
97 pea %sp@(SWITCH_STACK_SIZE)
98 jbsr m68k_vfork
99 addql #4,%sp
100 RESTORE_SWITCH_STACK
101 rts
102
103ENTRY(sys_clone)
104 SAVE_SWITCH_STACK
105 pea %sp@(SWITCH_STACK_SIZE)
106 jbsr m68k_clone
107 addql #4,%sp
108 RESTORE_SWITCH_STACK
109 rts
110
111ENTRY(sys_sigreturn)
112 SAVE_SWITCH_STACK
113 jbsr do_sigreturn
114 RESTORE_SWITCH_STACK
115 rts
116
117ENTRY(sys_rt_sigreturn)
118 SAVE_SWITCH_STACK
119 jbsr do_rt_sigreturn
120 RESTORE_SWITCH_STACK
121 rts
122
123ENTRY(ret_from_user_signal)
124 moveq #__NR_sigreturn,%d0
125 trap #0
126
127ENTRY(ret_from_user_rt_signal)
128 movel #__NR_rt_sigreturn,%d0
129 trap #0
130