Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | ||
1da177e4 LT |
27 | #include <linux/sys.h> |
28 | #include <linux/linkage.h> | |
29 | #include <asm/thread_info.h> | |
30 | #include <asm/errno.h> | |
31 | #include <asm/setup.h> | |
32 | #include <asm/segment.h> | |
33 | #include <asm/asm-offsets.h> | |
34 | #include <asm/entry.h> | |
2d7f16d6 | 35 | #include <asm/unistd.h> |
1da177e4 LT |
36 | |
37 | .text | |
38 | ||
39 | .globl buserr | |
40 | .globl trap | |
41 | .globl ret_from_exception | |
42 | .globl ret_from_signal | |
43 | .globl sys_fork | |
44 | .globl sys_clone | |
45 | .globl sys_vfork | |
46 | ||
47 | ENTRY(buserr) | |
48 | SAVE_ALL | |
49 | moveq #-1,%d0 | |
50 | movel %d0,%sp@(PT_ORIG_D0) | |
51 | movel %sp,%sp@- /* stack frame pointer argument */ | |
52 | jsr buserr_c | |
53 | addql #4,%sp | |
54 | jra ret_from_exception | |
55 | ||
56 | ENTRY(trap) | |
57 | SAVE_ALL | |
58 | moveq #-1,%d0 | |
59 | movel %d0,%sp@(PT_ORIG_D0) | |
60 | movel %sp,%sp@- /* stack frame pointer argument */ | |
61 | jsr trap_c | |
62 | addql #4,%sp | |
63 | jra ret_from_exception | |
64 | ||
65 | #ifdef TRAP_DBG_INTERRUPT | |
66 | ||
67 | .globl dbginterrupt | |
68 | ENTRY(dbginterrupt) | |
69 | SAVE_ALL | |
70 | moveq #-1,%d0 | |
71 | movel %d0,%sp@(PT_ORIG_D0) | |
72 | movel %sp,%sp@- /* stack frame pointer argument */ | |
73 | jsr dbginterrupt_c | |
74 | addql #4,%sp | |
75 | jra ret_from_exception | |
76 | #endif | |
77 | ||
78 | ENTRY(reschedule) | |
79 | /* save top of frame */ | |
80 | pea %sp@ | |
81 | jbsr set_esp0 | |
82 | addql #4,%sp | |
83 | pea ret_from_exception | |
84 | jmp schedule | |
85 | ||
86 | ENTRY(ret_from_fork) | |
87 | movel %d1,%sp@- | |
88 | jsr schedule_tail | |
89 | addql #4,%sp | |
90 | jra ret_from_exception | |
91 | ||
92 | ENTRY(sys_fork) | |
93 | SAVE_SWITCH_STACK | |
94 | pea %sp@(SWITCH_STACK_SIZE) | |
95 | jbsr m68k_fork | |
96 | addql #4,%sp | |
97 | RESTORE_SWITCH_STACK | |
98 | rts | |
99 | ||
100 | ENTRY(sys_vfork) | |
101 | SAVE_SWITCH_STACK | |
102 | pea %sp@(SWITCH_STACK_SIZE) | |
103 | jbsr m68k_vfork | |
104 | addql #4,%sp | |
105 | RESTORE_SWITCH_STACK | |
106 | rts | |
107 | ||
108 | ENTRY(sys_clone) | |
109 | SAVE_SWITCH_STACK | |
110 | pea %sp@(SWITCH_STACK_SIZE) | |
111 | jbsr m68k_clone | |
112 | addql #4,%sp | |
113 | RESTORE_SWITCH_STACK | |
114 | rts | |
115 | ||
116 | ENTRY(sys_sigsuspend) | |
117 | SAVE_SWITCH_STACK | |
118 | pea %sp@(SWITCH_STACK_SIZE) | |
119 | jbsr do_sigsuspend | |
120 | addql #4,%sp | |
121 | RESTORE_SWITCH_STACK | |
122 | rts | |
123 | ||
124 | ENTRY(sys_rt_sigsuspend) | |
125 | SAVE_SWITCH_STACK | |
126 | pea %sp@(SWITCH_STACK_SIZE) | |
127 | jbsr do_rt_sigsuspend | |
128 | addql #4,%sp | |
129 | RESTORE_SWITCH_STACK | |
130 | rts | |
131 | ||
132 | ENTRY(sys_sigreturn) | |
133 | SAVE_SWITCH_STACK | |
134 | jbsr do_sigreturn | |
135 | RESTORE_SWITCH_STACK | |
136 | rts | |
137 | ||
138 | ENTRY(sys_rt_sigreturn) | |
139 | SAVE_SWITCH_STACK | |
140 | jbsr do_rt_sigreturn | |
141 | RESTORE_SWITCH_STACK | |
142 | rts | |
143 | ||
2d7f16d6 WC |
144 | ENTRY(ret_from_user_signal) |
145 | moveq #__NR_sigreturn,%d0 | |
146 | trap #0 | |
147 | ||
148 | ENTRY(ret_from_user_rt_signal) | |
149 | move #__NR_rt_sigreturn,%d0 | |
150 | trap #0 | |
151 |