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review.evervolv.com / android_kernel_htc_msm8960 / 31ae9bddb935c74b51ead08d54948e5bea0f0344 / . / arch / m68k / kernel / entry_no.S
blob: d80cba45589f4b7c337f5c9a2cdff9b430bcd514 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]27#include <linux/linkage.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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>
Wilson Callan2d7f16d2008-05-01 12:16:28 +1000[diff] [blame]33#include <asm/unistd.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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)
Greg Ungerer61619b12011-06-22 13:50:44 +1000[diff] [blame]46 SAVE_ALL_INT
Greg Ungererbbc6f1b2011-10-14 15:41:56 +1000[diff] [blame]47 GET_CURRENT(%d0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]48 movel %sp,%sp@- /* stack frame pointer argument */
49 jsr buserr_c
50 addql #4,%sp
51 jra ret_from_exception
52
53ENTRY(trap)
Greg Ungerer61619b12011-06-22 13:50:44 +1000[diff] [blame]54 SAVE_ALL_INT
Greg Ungererbbc6f1b2011-10-14 15:41:56 +1000[diff] [blame]55 GET_CURRENT(%d0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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)
Greg Ungerer61619b12011-06-22 13:50:44 +1000[diff] [blame]65 SAVE_ALL_INT
Greg Ungererbbc6f1b2011-10-14 15:41:56 +1000[diff] [blame]66 GET_CURRENT(%d0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Wilson Callan2d7f16d2008-05-01 12:16:28 +1000[diff] [blame]123ENTRY(ret_from_user_signal)
124 moveq #__NR_sigreturn,%d0
125 trap #0
126
127ENTRY(ret_from_user_rt_signal)
Maxim Kuvyrkov760d6e72009-09-23 01:25:44 +0400[diff] [blame]128 movel #__NR_rt_sigreturn,%d0
Wilson Callan2d7f16d2008-05-01 12:16:28 +1000[diff] [blame]129 trap #0
130