projects / deliverable / linux.git / blame
| 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> | |
| 1da177e4 LT |
29 | #include <asm/errno.h> |
| 30 | #include <asm/setup.h> | |
| 31 | #include <asm/segment.h> | |
| 32 | #include <asm/asm-offsets.h> | |
| 33 | #include <asm/entry.h> | |
| 2d7f16d6 | 34 | #include <asm/unistd.h> |
| 1da177e4 LT |
35 | |
| 36 | .text | |
| 37 | ||
| 38 | .globl buserr | |
| 39 | .globl trap | |
| 40 | .globl ret_from_exception | |
| 41 | .globl ret_from_signal | |
| 42 | .globl sys_fork | |
| 43 | .globl sys_clone | |
| 44 | .globl sys_vfork | |
| 45 | ||
| 46 | ENTRY(buserr) | |
| 47 | SAVE_ALL | |
| 48 | moveq #-1,%d0 | |
| c84b564e | 49 | movel %d0,%sp@(PT_OFF_ORIG_D0) |
| 1da177e4 LT |
50 | movel %sp,%sp@- /* stack frame pointer argument */ |
| 51 | jsr buserr_c | |
| 52 | addql #4,%sp | |
| 53 | jra ret_from_exception | |
| 54 | ||
| 55 | ENTRY(trap) | |
| 56 | SAVE_ALL | |
| 57 | moveq #-1,%d0 | |
| c84b564e | 58 | movel %d0,%sp@(PT_OFF_ORIG_D0) |
| 1da177e4 LT |
59 | movel %sp,%sp@- /* stack frame pointer argument */ |
| 60 | jsr trap_c | |
| 61 | addql #4,%sp | |
| 62 | jra ret_from_exception | |
| 63 | ||
| 64 | #ifdef TRAP_DBG_INTERRUPT | |
| 65 | ||
| 66 | .globl dbginterrupt | |
| 67 | ENTRY(dbginterrupt) | |
| 68 | SAVE_ALL | |
| 69 | moveq #-1,%d0 | |
| c84b564e | 70 | movel %d0,%sp@(PT_OFF_ORIG_D0) |
| 1da177e4 LT |
71 | movel %sp,%sp@- /* stack frame pointer argument */ |
| 72 | jsr dbginterrupt_c | |
| 73 | addql #4,%sp | |
| 74 | jra ret_from_exception | |
| 75 | #endif | |
| 76 | ||
| 77 | ENTRY(reschedule) | |
| 78 | /* save top of frame */ | |
| 79 | pea %sp@ | |
| 80 | jbsr set_esp0 | |
| 81 | addql #4,%sp | |
| 82 | pea ret_from_exception | |
| 83 | jmp schedule | |
| 84 | ||
| 85 | ENTRY(ret_from_fork) | |
| 86 | movel %d1,%sp@- | |
| 87 | jsr schedule_tail | |
| 88 | addql #4,%sp | |
| 89 | jra ret_from_exception | |
| 90 | ||
| 91 | ENTRY(sys_fork) | |
| 92 | SAVE_SWITCH_STACK | |
| 93 | pea %sp@(SWITCH_STACK_SIZE) | |
| 94 | jbsr m68k_fork | |
| 95 | addql #4,%sp | |
| 96 | RESTORE_SWITCH_STACK | |
| 97 | rts | |
| 98 | ||
| 99 | ENTRY(sys_vfork) | |
| 100 | SAVE_SWITCH_STACK | |
| 101 | pea %sp@(SWITCH_STACK_SIZE) | |
| 102 | jbsr m68k_vfork | |
| 103 | addql #4,%sp | |
| 104 | RESTORE_SWITCH_STACK | |
| 105 | rts | |
| 106 | ||
| 107 | ENTRY(sys_clone) | |
| 108 | SAVE_SWITCH_STACK | |
| 109 | pea %sp@(SWITCH_STACK_SIZE) | |
| 110 | jbsr m68k_clone | |
| 111 | addql #4,%sp | |
| 112 | RESTORE_SWITCH_STACK | |
| 113 | rts | |
| 114 | ||
| 115 | ENTRY(sys_sigsuspend) | |
| 116 | SAVE_SWITCH_STACK | |
| 117 | pea %sp@(SWITCH_STACK_SIZE) | |
| 118 | jbsr do_sigsuspend | |
| 119 | addql #4,%sp | |
| 120 | RESTORE_SWITCH_STACK | |
| 121 | rts | |
| 122 | ||
| 123 | ENTRY(sys_rt_sigsuspend) | |
| 124 | SAVE_SWITCH_STACK | |
| 125 | pea %sp@(SWITCH_STACK_SIZE) | |
| 126 | jbsr do_rt_sigsuspend | |
| 127 | addql #4,%sp | |
| 128 | RESTORE_SWITCH_STACK | |
| 129 | rts | |
| 130 | ||
| 131 | ENTRY(sys_sigreturn) | |
| 132 | SAVE_SWITCH_STACK | |
| 133 | jbsr do_sigreturn | |
| 134 | RESTORE_SWITCH_STACK | |
| 135 | rts | |
| 136 | ||
| 137 | ENTRY(sys_rt_sigreturn) | |
| 138 | SAVE_SWITCH_STACK | |
| 139 | jbsr do_rt_sigreturn | |
| 140 | RESTORE_SWITCH_STACK | |
| 141 | rts | |
| 142 | ||
| 2d7f16d6 WC |
143 | ENTRY(ret_from_user_signal) |
| 144 | moveq #__NR_sigreturn,%d0 | |
| 145 | trap #0 | |
| 146 | ||
| 147 | ENTRY(ret_from_user_rt_signal) | |
| 760d6e78 | 148 | movel #__NR_rt_sigreturn,%d0 |
| 2d7f16d6 WC |
149 | trap #0 |
| 150 |