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-rw-r--r--arch/cris/arch-v10/kernel/entry.S245
1 files changed, 1 insertions, 244 deletions
diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S
index d1361dc119e2..b61aedbad38f 100644
--- a/arch/cris/arch-v10/kernel/entry.S
+++ b/arch/cris/arch-v10/kernel/entry.S
@@ -1,252 +1,9 @@
1/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $ 1/*
2 *
3 * linux/arch/cris/entry.S 2 * linux/arch/cris/entry.S
4 * 3 *
5 * Copyright (C) 2000, 2001, 2002 Axis Communications AB 4 * Copyright (C) 2000, 2001, 2002 Axis Communications AB
6 * 5 *
7 * Authors: Bjorn Wesen (bjornw@axis.com) 6 * Authors: Bjorn Wesen (bjornw@axis.com)
8 *
9 * $Log: entry.S,v $
10 * Revision 1.28 2005/06/20 05:06:30 starvik
11 * Remove unnecessary diff to kernel.org tree
12 *
13 * Revision 1.27 2005/03/04 08:16:16 starvik
14 * Merge of Linux 2.6.11.
15 *
16 * Revision 1.26 2005/01/11 13:49:47 starvik
17 * Added NMI handler.
18 *
19 * Revision 1.25 2004/12/27 11:18:32 starvik
20 * Merge of Linux 2.6.10 (not functional yet).
21 *
22 * Revision 1.24 2004/12/22 10:41:23 starvik
23 * Updates to make v10 compile with the latest SMP aware generic code (even
24 * though v10 will never have SMP).
25 *
26 * Revision 1.23 2004/10/19 13:07:37 starvik
27 * Merge of Linux 2.6.9
28 *
29 * Revision 1.22 2004/06/21 10:29:55 starvik
30 * Merge of Linux 2.6.7
31 *
32 * Revision 1.21 2004/06/09 05:30:27 starvik
33 * Clean up multiple interrupt handling.
34 * Prevent interrupts from interrupting each other.
35 * Handle all active interrupts.
36 *
37 * Revision 1.20 2004/06/08 08:55:32 starvik
38 * Removed unused code
39 *
40 * Revision 1.19 2004/06/04 11:56:15 starvik
41 * Implemented page table lookup for refills in assembler for improved performance.
42 *
43 * Revision 1.18 2004/05/11 12:28:25 starvik
44 * Merge of Linux 2.6.6
45 *
46 * Revision 1.17 2003/09/11 07:29:49 starvik
47 * Merge of Linux 2.6.0-test5
48 *
49 * Revision 1.16 2003/07/04 08:27:41 starvik
50 * Merge of Linux 2.5.74
51 *
52 * Revision 1.15 2003/04/09 07:32:55 starvik
53 * resume should return task_struct, not thread_info
54 *
55 * Revision 1.14 2003/04/09 05:20:44 starvik
56 * Merge of Linux 2.5.67
57 *
58 * Revision 1.13 2002/12/11 15:42:02 starvik
59 * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/*.c
60 *
61 * Revision 1.12 2002/12/10 09:00:10 starvik
62 * Merge of Linux 2.5.51
63 *
64 * Revision 1.11 2002/12/05 07:53:10 starvik
65 * Corrected constants used with btstq
66 *
67 * Revision 1.10 2002/11/27 08:45:10 starvik
68 * pid is in task_struct, not thread_info
69 *
70 * Revision 1.9 2002/11/26 09:52:05 starvik
71 * Added preemptive kernel scheduling (if CONFIG_PREEMPT)
72 *
73 * Revision 1.8 2002/11/20 11:56:11 starvik
74 * Merge of Linux 2.5.48
75 *
76 * Revision 1.7 2002/11/18 13:02:42 starvik
77 * Added fourth parameter to do_notify_resume
78 * Minor cleanup
79 *
80 * Revision 1.6 2002/11/11 10:37:50 starvik
81 * Use new asm-offset defines
82 * Modified for new location of current->work etc
83 * Removed SYMBOL_NAME from syscalls
84 * Added some new syscalls
85 *
86 * Revision 1.5 2002/11/05 06:45:11 starvik
87 * Merge of Linux 2.5.45
88 *
89 * Revision 1.4 2002/02/05 15:41:31 bjornw
90 * Rewritten to conform better to current 2.5 code (similar to arch/i386)
91 *
92 * Revision 1.3 2002/01/21 15:22:20 bjornw
93 * NICE_DOGGY fix from 2.4 arch/cris
94 *
95 * Revision 1.37 2001/12/07 17:03:55 bjornw
96 * Call a c-hook called watchdog_bite_hook instead of show_registers directly
97 *
98 * Revision 1.36 2001/11/22 13:36:36 bjornw
99 * * In ret_from_intr, check regs->dccr for usermode reentrance instead of
100 * DCCR explicitly (because the latter might not reflect current reality)
101 * * In mmu_bus_fault, set $r9 _after_ calling the C-code instead of before
102 * since $r9 is call-clobbered and is potentially needed afterwards
103 *
104 * Revision 1.35 2001/10/30 17:10:15 bjornw
105 * Add some syscalls
106 *
107 * Revision 1.34 2001/10/01 14:45:03 bjornw
108 * Removed underscores and added register prefixes
109 *
110 * Revision 1.33 2001/08/21 13:48:01 jonashg
111 * Added fix by HP to avoid oops when doing a hard_reset_now.
112 *
113 * Revision 1.32 2001/08/14 04:32:02 hp
114 * In _resume, add comment why R9 is saved; don't sound like it's call-saved.
115 *
116 * Revision 1.31 2001/07/25 16:07:42 bjornw
117 * softirq_active/mask -> softirq_pending only
118 *
119 * Revision 1.30 2001/07/05 01:03:32 hp
120 * - include asm/errno.h to get ENOSYS.
121 * - Use ENOSYS, not local constant LENOSYS; tweak comments.
122 * - Explain why .include, not #include is used.
123 * - Make oops-register-dump if watchdog bits and it's not expected.
124 * - Don't jsr, use jump _hard_reset_now, and skip spurious nop.
125 * - Use correct section attribute for section .rodata.
126 * - Adjust sys_ni_syscall fill number.
127 *
128 * Revision 1.29 2001/06/25 14:07:00 hp
129 * Fix review comment.
130 * * head.S: Use IO_STATE, IO_FIELD and IO_MASK constructs instead of
131 * magic numbers. Add comment that -traditional must not be used.
132 * * entry.S (SYMBOL_NAME): Change redefinition to use ## concatenation.
133 * Correct and update comment.
134 * * Makefile (.S.o): Don't use -traditional. Add comment why the
135 * toplevel rule can't be used (now that there's a reason).
136 *
137 * Revision 1.28 2001/06/21 02:00:40 hp
138 * * entry.S: Include asm/unistd.h.
139 * (_sys_call_table): Use section .rodata, not .data.
140 * (_kernel_thread): Move from...
141 * * process.c: ... here.
142 * * entryoffsets.c (VAL): Break out from...
143 * (OF): Use VAL.
144 * (LCLONE_VM): New asmified value from CLONE_VM.
145 *
146 * Revision 1.27 2001/05/29 11:25:27 markusl
147 * In case of "spurious_interrupt", do hard_reset instead of hanging system in a loop...
148 *
149 * Revision 1.26 2001/05/15 15:46:03 bjornw
150 * Include config.h now that we use some CONFIG_ options
151 *
152 * Revision 1.25 2001/05/15 05:38:47 hp
153 * Tweaked code in _ret_from_sys_call
154 *
155 * Revision 1.24 2001/05/15 05:27:49 hp
156 * Save r9 in r1 over function call rather than on stack.
157 *
158 * Revision 1.23 2001/05/15 05:10:00 hp
159 * Generate entry.S structure offsets from C
160 *
161 * Revision 1.22 2001/04/17 13:58:39 orjanf
162 * * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
163 *
164 * Revision 1.21 2001/04/17 11:33:29 orjanf
165 * Updated according to review:
166 * * Included asm/sv_addr_ag.h to get macro for internal register.
167 * * Corrected comment regarding system call argument passing.
168 * * Removed comment about instruction being in a delay slot.
169 * * Added comment about SYMBOL_NAME macro.
170 *
171 * Revision 1.20 2001/04/12 08:51:07 hp
172 * - Add entry for sys_fcntl64. In fact copy last piece from i386 including ...
173 * - .rept to fill table to safe state with sys_ni_syscall.
174 *
175 * Revision 1.19 2001/04/04 09:43:32 orjanf
176 * * Moved do_sigtrap from traps.c to entry.S.
177 * * LTASK_PID need not be global anymore.
178 *
179 * Revision 1.18 2001/03/26 09:25:02 markusl
180 * Updated after review, should now handle USB interrupts correctly.
181 *
182 * Revision 1.17 2001/03/21 16:12:55 bjornw
183 * * Always make room for the cpu status record in the frame, in order to
184 * use the same framelength and layout for both mmu busfaults and normal
185 * irqs. No need to check for the explicit CRIS_FRAME_FIXUP type anymore.
186 * * Fixed bug with using addq for popping the stack in the epilogue - it
187 * destroyed the flag register. Use instructions that don't affect the
188 * flag register instead.
189 * * Removed write to R_PORT_PA_DATA during spurious_interrupt
190 *
191 * Revision 1.16 2001/03/20 19:43:02 bjornw
192 * * Get rid of esp0 setting
193 * * Give a 7th argument to a systemcall - the stackframe
194 *
195 * Revision 1.15 2001/03/05 13:14:30 bjornw
196 * Spelling fix
197 *
198 * Revision 1.14 2001/02/23 08:36:36 perf
199 * New ABI; syscallnr=r9, arg5=mof, arg6=srp.
200 * Corrected tracesys call check.
201 *
202 * Revision 1.13 2001/02/15 08:40:55 perf
203 * H-P by way of perf;
204 * - (_system_call): Don't read system call function address into r1.
205 * - (RBFExit): There is no such thing as a null pop. Adjust sp by addq.
206 * - (_system_call): Don't use r10 and don't save and restore it.
207 * - (THREAD_ESP0): New constant.
208 * - (_system_call): Inline set_esp0.
209 *
210 * Revision 1.12 2001/01/31 17:56:25 orjanf
211 * Added definition of LTASK_PID and made it global.
212 *
213 * Revision 1.11 2001/01/10 21:13:29 bjornw
214 * SYMBOL_NAME is defined incorrectly for the compiler options we currently use
215 *
216 * Revision 1.10 2000/12/18 23:47:56 bjornw
217 * * Added syscall trace support (ptrace), completely untested of course
218 * * Removed redundant check for NULL entries in syscall_table
219 *
220 * Revision 1.9 2000/11/21 16:40:51 bjornw
221 * * New frame type used when an SBFS frame needs to be popped without
222 * actually restarting the instruction
223 * * Enable interrupts in signal_return (they did so in x86, I hope it's a good
224 * idea)
225 *
226 * Revision 1.8 2000/11/17 16:53:35 bjornw
227 * Added detection of frame-type in Rexit, so that mmu_bus_fault can
228 * use ret_from_intr in the return-path to check for signals (like SEGV)
229 * and other foul things that might have occurred during the fault.
230 *
231 * Revision 1.7 2000/10/06 15:04:28 bjornw
232 * Include mof in register savings
233 *
234 * Revision 1.6 2000/09/12 16:02:44 bjornw
235 * Linux-2.4.0-test7 derived updates
236 *
237 * Revision 1.5 2000/08/17 15:35:15 bjornw
238 * 2.4.0-test6 changed local_irq_count and friends API
239 *
240 * Revision 1.4 2000/08/02 13:59:30 bjornw
241 * Removed olduname and uname from the syscall list
242 *
243 * Revision 1.3 2000/07/31 13:32:58 bjornw
244 * * Export ret_from_intr
245 * * _resume updated (prev/last tjohejsan)
246 * * timer_interrupt obsolete
247 * * SIGSEGV detection in mmu_bus_fault temporarily disabled
248 *
249 *
250 */ 7 */
251 8
252/* 9/*
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