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7cf32cad | 1 | /* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $ |
1da177e4 LT |
2 | * |
3 | * linux/arch/cris/entry.S | |
4 | * | |
5 | * Copyright (C) 2000, 2001, 2002 Axis Communications AB | |
6 | * | |
7 | * Authors: Bjorn Wesen (bjornw@axis.com) | |
8 | * | |
9 | * $Log: entry.S,v $ | |
7cf32cad MS |
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 | * | |
1da177e4 LT |
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 | |
c03983ac | 100 | * DCCR explicitly (because the latter might not reflect current reality) |
1da177e4 LT |
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 | */ | |
251 | ||
252 | /* | |
253 | * entry.S contains the system-call and fault low-level handling routines. | |
254 | * | |
255 | * NOTE: This code handles signal-recognition, which happens every time | |
256 | * after a timer-interrupt and after each system call. | |
257 | * | |
258 | * Stack layout in 'ret_from_system_call': | |
259 | * ptrace needs to have all regs on the stack. | |
260 | * if the order here is changed, it needs to be | |
261 | * updated in fork.c:copy_process, signal.c:do_signal, | |
262 | * ptrace.c and ptrace.h | |
263 | * | |
264 | */ | |
265 | ||
1da177e4 LT |
266 | #include <linux/linkage.h> |
267 | #include <linux/sys.h> | |
268 | #include <asm/unistd.h> | |
269 | #include <asm/arch/sv_addr_ag.h> | |
270 | #include <asm/errno.h> | |
271 | #include <asm/thread_info.h> | |
5a077369 | 272 | #include <asm/asm-offsets.h> |
1da177e4 LT |
273 | #include <asm/page.h> |
274 | #include <asm/pgtable.h> | |
275 | ||
276 | ;; functions exported from this file | |
277 | ||
278 | .globl system_call | |
279 | .globl ret_from_intr | |
280 | .globl ret_from_fork | |
281 | .globl resume | |
282 | .globl multiple_interrupt | |
283 | .globl hwbreakpoint | |
284 | .globl IRQ1_interrupt | |
285 | .globl spurious_interrupt | |
286 | .globl hw_bp_trigs | |
287 | .globl mmu_bus_fault | |
288 | .globl do_sigtrap | |
289 | .globl gdb_handle_breakpoint | |
290 | .globl sys_call_table | |
291 | ||
292 | ;; below are various parts of system_call which are not in the fast-path | |
293 | ||
294 | #ifdef CONFIG_PREEMPT | |
295 | ; Check if preemptive kernel scheduling should be done | |
296 | _resume_kernel: | |
7cf32cad | 297 | di |
1da177e4 LT |
298 | ; Load current task struct |
299 | movs.w -8192, $r0 ; THREAD_SIZE = 8192 | |
300 | and.d $sp, $r0 | |
301 | move.d [$r0+TI_preempt_count], $r10 ; Preemption disabled? | |
302 | bne _Rexit | |
303 | nop | |
304 | _need_resched: | |
305 | move.d [$r0+TI_flags], $r10 | |
306 | btstq TIF_NEED_RESCHED, $r10 ; Check if need_resched is set | |
307 | bpl _Rexit | |
308 | nop | |
309 | ; Ok, lets's do some preemptive kernel scheduling | |
7cf32cad | 310 | jsr preempt_schedule_irq |
1da177e4 LT |
311 | ; Load new task struct |
312 | movs.w -8192, $r0 ; THREAD_SIZE = 8192 | |
313 | and.d $sp, $r0 | |
314 | ; One more time (with new task) | |
315 | ba _need_resched | |
316 | nop | |
317 | #else | |
318 | #define _resume_kernel _Rexit | |
319 | #endif | |
320 | ||
321 | ; Called at exit from fork. schedule_tail must be called to drop | |
322 | ; spinlock if CONFIG_PREEMPT | |
323 | ret_from_fork: | |
324 | jsr schedule_tail | |
325 | ba ret_from_sys_call | |
326 | nop | |
327 | ||
328 | ret_from_intr: | |
329 | ;; check for resched if preemptive kernel or if we're going back to user-mode | |
330 | ;; this test matches the user_regs(regs) macro | |
331 | ;; we cannot simply test $dccr, because that does not necessarily | |
332 | ;; reflect what mode we'll return into. | |
333 | ||
334 | move.d [$sp + PT_dccr], $r0; regs->dccr | |
335 | btstq 8, $r0 ; U-flag | |
336 | bpl _resume_kernel | |
337 | ; Note that di below is in delay slot | |
338 | ||
339 | _resume_userspace: | |
340 | di ; so need_resched and sigpending don't change | |
341 | ||
342 | movs.w -8192, $r0 ; THREAD_SIZE == 8192 | |
343 | and.d $sp, $r0 | |
344 | ||
345 | move.d [$r0+TI_flags], $r10 ; current->work | |
346 | and.d _TIF_WORK_MASK, $r10 ; is there any work to be done on return | |
347 | bne _work_pending | |
348 | nop | |
349 | ba _Rexit | |
350 | nop | |
351 | ||
352 | ;; The system_call is called by a BREAK instruction, which works like | |
353 | ;; an interrupt call but it stores the return PC in BRP instead of IRP. | |
354 | ;; Since we dont really want to have two epilogues (one for system calls | |
355 | ;; and one for interrupts) we push the contents of BRP instead of IRP in the | |
356 | ;; system call prologue, to make it look like an ordinary interrupt on the | |
357 | ;; stackframe. | |
358 | ;; | |
359 | ;; Since we can't have system calls inside interrupts, it should not matter | |
360 | ;; that we don't stack IRP. | |
361 | ;; | |
362 | ;; In r9 we have the wanted syscall number. Arguments come in r10,r11,r12,r13,mof,srp | |
363 | ;; | |
364 | ;; This function looks on the _surface_ like spaghetti programming, but it's | |
365 | ;; really designed so that the fast-path does not force cache-loading of non-used | |
366 | ;; instructions. Only the non-common cases cause the outlined code to run.. | |
367 | ||
368 | system_call: | |
369 | ;; stack-frame similar to the irq heads, which is reversed in ret_from_sys_call | |
370 | move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame | |
371 | push $srp | |
372 | push $dccr | |
373 | push $mof | |
374 | subq 14*4, $sp ; make room for r0-r13 | |
375 | movem $r13, [$sp] ; push r0-r13 | |
376 | push $r10 ; push orig_r10 | |
377 | clear.d [$sp=$sp-4] ; frametype == 0, normal stackframe | |
378 | ||
379 | movs.w -ENOSYS, $r0 | |
380 | move.d $r0, [$sp+PT_r10] ; put the default return value in r10 in the frame | |
381 | ||
382 | ;; check if this process is syscall-traced | |
383 | ||
384 | movs.w -8192, $r0 ; THREAD_SIZE == 8192 | |
385 | and.d $sp, $r0 | |
386 | ||
387 | move.d [$r0+TI_flags], $r0 | |
388 | btstq TIF_SYSCALL_TRACE, $r0 | |
389 | bmi _syscall_trace_entry | |
390 | nop | |
391 | ||
392 | _syscall_traced: | |
393 | ||
394 | ;; check for sanity in the requested syscall number | |
395 | ||
396 | cmpu.w NR_syscalls, $r9 | |
397 | bcc ret_from_sys_call | |
398 | lslq 2, $r9 ; multiply by 4, in the delay slot | |
399 | ||
400 | ;; as a bonus 7th parameter, we give the location on the stack | |
401 | ;; of the register structure itself. some syscalls need this. | |
402 | ||
403 | push $sp | |
404 | ||
405 | ;; the parameter carrying registers r10, r11, r12 and 13 are intact. | |
406 | ;; the fifth and sixth parameters (if any) was in mof and srp | |
407 | ;; respectively, and we need to put them on the stack. | |
408 | ||
409 | push $srp | |
410 | push $mof | |
411 | ||
412 | jsr [$r9+sys_call_table] ; actually do the system call | |
413 | addq 3*4, $sp ; pop the mof, srp and regs parameters | |
414 | move.d $r10, [$sp+PT_r10] ; save the return value | |
415 | ||
416 | moveq 1, $r9 ; "parameter" to ret_from_sys_call to show it was a sys call | |
417 | ||
418 | ;; fall through into ret_from_sys_call to return | |
419 | ||
420 | ret_from_sys_call: | |
421 | ;; r9 is a parameter - if >=1 we came from a syscall, if 0, from an irq | |
422 | ||
423 | ;; get the current task-struct pointer (see top for defs) | |
424 | ||
425 | movs.w -8192, $r0 ; THREAD_SIZE == 8192 | |
426 | and.d $sp, $r0 | |
427 | ||
428 | di ; make sure need_resched and sigpending don't change | |
429 | move.d [$r0+TI_flags],$r1 | |
430 | and.d _TIF_ALLWORK_MASK, $r1 | |
431 | bne _syscall_exit_work | |
432 | nop | |
433 | ||
434 | _Rexit: | |
435 | ;; this epilogue MUST match the prologues in multiple_interrupt, irq.h and ptregs.h | |
436 | pop $r10 ; frametype | |
437 | bne _RBFexit ; was not CRIS_FRAME_NORMAL, handle otherwise | |
438 | addq 4, $sp ; skip orig_r10, in delayslot | |
439 | movem [$sp+], $r13 ; registers r0-r13 | |
440 | pop $mof ; multiply overflow register | |
441 | pop $dccr ; condition codes | |
442 | pop $srp ; subroutine return pointer | |
443 | ;; now we have a 4-word SBFS frame which we do not want to restore | |
444 | ;; using RBF since it was not stacked with SBFS. instead we would like to | |
445 | ;; just get the PC value to restart it with, and skip the rest of | |
446 | ;; the frame. | |
447 | ;; Also notice that it's important to use instructions here that | |
448 | ;; keep the interrupts disabled (since we've already popped DCCR) | |
449 | move [$sp=$sp+16], $p8; pop the SBFS frame from the sp | |
450 | jmpu [$sp-16] ; return through the irp field in the sbfs frame | |
451 | ||
452 | _RBFexit: | |
453 | movem [$sp+], $r13 ; registers r0-r13, in delay slot | |
454 | pop $mof ; multiply overflow register | |
455 | pop $dccr ; condition codes | |
456 | pop $srp ; subroutine return pointer | |
457 | rbf [$sp+] ; return by popping the CPU status | |
458 | ||
459 | ;; We get here after doing a syscall if extra work might need to be done | |
460 | ;; perform syscall exit tracing if needed | |
461 | ||
462 | _syscall_exit_work: | |
463 | ;; $r0 contains current at this point and irq's are disabled | |
464 | ||
465 | move.d [$r0+TI_flags], $r1 | |
466 | btstq TIF_SYSCALL_TRACE, $r1 | |
467 | bpl _work_pending | |
468 | nop | |
469 | ||
470 | ei | |
471 | ||
472 | move.d $r9, $r1 ; preserve r9 | |
473 | jsr do_syscall_trace | |
474 | move.d $r1, $r9 | |
475 | ||
476 | ba _resume_userspace | |
477 | nop | |
478 | ||
479 | _work_pending: | |
480 | move.d [$r0+TI_flags], $r1 | |
481 | btstq TIF_NEED_RESCHED, $r1 | |
482 | bpl _work_notifysig ; was neither trace nor sched, must be signal/notify | |
483 | nop | |
484 | ||
485 | _work_resched: | |
486 | move.d $r9, $r1 ; preserve r9 | |
487 | jsr schedule | |
488 | move.d $r1, $r9 | |
489 | di | |
490 | ||
491 | move.d [$r0+TI_flags], $r1 | |
492 | and.d _TIF_WORK_MASK, $r1; ignore the syscall trace counter | |
493 | beq _Rexit | |
494 | nop | |
495 | btstq TIF_NEED_RESCHED, $r1 | |
496 | bmi _work_resched ; current->work.need_resched | |
497 | nop | |
498 | ||
499 | _work_notifysig: | |
500 | ;; deal with pending signals and notify-resume requests | |
501 | ||
502 | move.d $r9, $r10 ; do_notify_resume syscall/irq param | |
7b275523 JN |
503 | move.d $sp, $r11 ; the regs param |
504 | move.d $r1, $r12 ; the thread_info_flags parameter | |
1da177e4 LT |
505 | jsr do_notify_resume |
506 | ||
507 | ba _Rexit | |
508 | nop | |
509 | ||
510 | ;; We get here as a sidetrack when we've entered a syscall with the | |
511 | ;; trace-bit set. We need to call do_syscall_trace and then continue | |
512 | ;; with the call. | |
513 | ||
514 | _syscall_trace_entry: | |
515 | ;; PT_r10 in the frame contains -ENOSYS as required, at this point | |
516 | ||
517 | jsr do_syscall_trace | |
518 | ||
519 | ;; now re-enter the syscall code to do the syscall itself | |
520 | ;; we need to restore $r9 here to contain the wanted syscall, and | |
521 | ;; the other parameter-bearing registers | |
522 | ||
523 | move.d [$sp+PT_r9], $r9 | |
524 | move.d [$sp+PT_orig_r10], $r10 ; PT_r10 is already filled with -ENOSYS. | |
525 | move.d [$sp+PT_r11], $r11 | |
526 | move.d [$sp+PT_r12], $r12 | |
527 | move.d [$sp+PT_r13], $r13 | |
528 | move [$sp+PT_mof], $mof | |
529 | move [$sp+PT_srp], $srp | |
530 | ||
531 | ba _syscall_traced | |
532 | nop | |
533 | ||
534 | ;; resume performs the actual task-switching, by switching stack pointers | |
535 | ;; input arguments: r10 = prev, r11 = next, r12 = thread offset in task struct | |
536 | ;; returns old current in r10 | |
537 | ;; | |
538 | ;; TODO: see the i386 version. The switch_to which calls resume in our version | |
539 | ;; could really be an inline asm of this. | |
540 | ||
541 | resume: | |
542 | push $srp ; we keep the old/new PC on the stack | |
543 | add.d $r12, $r10 ; r10 = current tasks tss | |
544 | move $dccr, [$r10+THREAD_dccr]; save irq enable state | |
545 | di | |
546 | ||
547 | move $usp, [$r10+ THREAD_usp] ; save user-mode stackpointer | |
548 | ||
549 | ;; See copy_thread for the reason why register R9 is saved. | |
550 | subq 10*4, $sp | |
551 | movem $r9, [$sp] ; save non-scratch registers and R9. | |
552 | ||
553 | move.d $sp, [$r10+THREAD_ksp] ; save the kernel stack pointer for the old task | |
554 | move.d $sp, $r10 ; return last running task in r10 | |
555 | and.d -8192, $r10 ; get thread_info from stackpointer | |
556 | move.d [$r10+TI_task], $r10 ; get task | |
557 | add.d $r12, $r11 ; find the new tasks tss | |
558 | move.d [$r11+THREAD_ksp], $sp ; switch into the new stackframe by restoring kernel sp | |
559 | ||
560 | movem [$sp+], $r9 ; restore non-scratch registers and R9. | |
561 | ||
562 | move [$r11+THREAD_usp], $usp ; restore user-mode stackpointer | |
563 | ||
564 | move [$r11+THREAD_dccr], $dccr ; restore irq enable status | |
565 | jump [$sp+] ; restore PC | |
566 | ||
567 | ;; This is the MMU bus fault handler. | |
568 | ;; It needs to stack the CPU status and overall is different | |
569 | ;; from the other interrupt handlers. | |
570 | ||
571 | mmu_bus_fault: | |
572 | ;; For refills we try to do a quick page table lookup. If it is | |
573 | ;; a real fault we let the mm subsystem handle it. | |
574 | ||
575 | ;; the first longword in the sbfs frame was the interrupted PC | |
576 | ;; which fits nicely with the "IRP" slot in pt_regs normally used to | |
577 | ;; contain the return address. used by Oops to print kernel errors. | |
578 | sbfs [$sp=$sp-16] ; push the internal CPU status | |
579 | push $dccr | |
580 | di | |
581 | subq 2*4, $sp | |
582 | movem $r1, [$sp] | |
583 | move.d [R_MMU_CAUSE], $r1 | |
584 | ;; ETRAX 100LX TR89 bugfix: if the second half of an unaligned | |
585 | ;; write causes a MMU-fault, it will not be restarted correctly. | |
586 | ;; This could happen if a write crosses a page-boundary and the | |
587 | ;; second page is not yet COW'ed or even loaded. The workaround | |
588 | ;; is to clear the unaligned bit in the CPU status record, so | |
589 | ;; that the CPU will rerun both the first and second halves of | |
590 | ;; the instruction. This will not have any sideeffects unless | |
591 | ;; the first half goes to any device or memory that can't be | |
592 | ;; written twice, and which is mapped through the MMU. | |
593 | ;; | |
594 | ;; We only need to do this for writes. | |
595 | btstq 8, $r1 ; Write access? | |
596 | bpl 1f | |
597 | nop | |
598 | move.d [$sp+16], $r0 ; Clear unaligned bit in csrinstr | |
599 | and.d ~(1<<5), $r0 | |
600 | move.d $r0, [$sp+16] | |
601 | 1: btstq 12, $r1 ; Refill? | |
602 | bpl 2f | |
7cf32cad MS |
603 | lsrq 24, $r1 ; Get PGD index (bit 24-31) |
604 | move.d [per_cpu__current_pgd], $r0 ; PGD for the current process | |
1da177e4 LT |
605 | move.d [$r0+$r1.d], $r0 ; Get PMD |
606 | beq 2f | |
607 | nop | |
608 | and.w PAGE_MASK, $r0 ; Remove PMD flags | |
609 | move.d [R_MMU_CAUSE], $r1 | |
610 | lsrq PAGE_SHIFT, $r1 | |
7cf32cad | 611 | and.d 0x7ff, $r1 ; Get PTE index into PGD (bit 13-23) |
1da177e4 LT |
612 | move.d [$r0+$r1.d], $r1 ; Get PTE |
613 | beq 2f | |
614 | nop | |
615 | ;; Store in TLB | |
616 | move.d $r1, [R_TLB_LO] | |
617 | ;; Return | |
618 | movem [$sp+], $r1 | |
619 | pop $dccr | |
620 | rbf [$sp+] ; return by popping the CPU status | |
621 | ||
622 | 2: ; PMD or PTE missing, let the mm subsystem fix it up. | |
623 | movem [$sp+], $r1 | |
624 | pop $dccr | |
625 | ||
626 | ; Ok, not that easy, pass it on to the mm subsystem | |
627 | ; The MMU status record is now on the stack | |
628 | push $srp ; make a stackframe similar to pt_regs | |
629 | push $dccr | |
630 | push $mof | |
631 | di | |
632 | subq 14*4, $sp | |
633 | movem $r13, [$sp] | |
634 | push $r10 ; dummy orig_r10 | |
635 | moveq 1, $r10 | |
636 | push $r10 ; frametype == 1, BUSFAULT frame type | |
637 | ||
638 | move.d $sp, $r10 ; pt_regs argument to handle_mmu_bus_fault | |
639 | ||
640 | jsr handle_mmu_bus_fault ; in arch/cris/arch-v10/mm/fault.c | |
641 | ||
642 | ;; now we need to return through the normal path, we cannot just | |
643 | ;; do the RBFexit since we might have killed off the running | |
644 | ;; process due to a SEGV, scheduled due to a page blocking or | |
645 | ;; whatever. | |
646 | ||
647 | moveq 0, $r9 ; busfault is equivalent to an irq | |
648 | ||
649 | ba ret_from_intr | |
650 | nop | |
651 | ||
652 | ;; special handlers for breakpoint and NMI | |
653 | hwbreakpoint: | |
654 | push $dccr | |
655 | di | |
656 | push $r10 | |
657 | push $r11 | |
658 | move.d [hw_bp_trig_ptr],$r10 | |
659 | move $brp,$r11 | |
660 | move.d $r11,[$r10+] | |
661 | move.d $r10,[hw_bp_trig_ptr] | |
662 | 1: pop $r11 | |
663 | pop $r10 | |
664 | pop $dccr | |
665 | retb | |
666 | nop | |
667 | ||
668 | IRQ1_interrupt: | |
1da177e4 LT |
669 | ;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!! |
670 | move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame | |
671 | push $srp | |
672 | push $dccr | |
673 | push $mof | |
674 | di | |
675 | subq 14*4, $sp | |
676 | movem $r13, [$sp] | |
677 | push $r10 ; push orig_r10 | |
678 | clear.d [$sp=$sp-4] ; frametype == 0, normal frame | |
679 | ||
7b275523 JN |
680 | ;; If there is a glitch on the NMI pin shorter than ~100ns |
681 | ;; (i.e. non-active by the time we get here) then the nmi_pin bit | |
682 | ;; in R_IRQ_MASK0_RD will already be cleared. The watchdog_nmi bit | |
683 | ;; is cleared by us however (when feeding the watchdog), which is why | |
684 | ;; we use that bit to determine what brought us here. | |
685 | ||
7cf32cad | 686 | move.d [R_IRQ_MASK0_RD], $r1 ; External NMI or watchdog? |
7b275523 JN |
687 | and.d (1<<30), $r1 |
688 | bne wdog | |
7cf32cad MS |
689 | move.d $sp, $r10 |
690 | jsr handle_nmi | |
691 | setf m ; Enable NMI again | |
7b275523 | 692 | ba _Rexit ; Return the standard way |
7cf32cad MS |
693 | nop |
694 | wdog: | |
695 | #if defined(CONFIG_ETRAX_WATCHDOG) && !defined(CONFIG_SVINTO_SIM) | |
1da177e4 LT |
696 | ;; Check if we're waiting for reset to happen, as signalled by |
697 | ;; hard_reset_now setting cause_of_death to a magic value. If so, just | |
698 | ;; get stuck until reset happens. | |
699 | .comm cause_of_death, 4 ;; Don't declare this anywhere. | |
700 | move.d [cause_of_death], $r10 | |
701 | cmp.d 0xbedead, $r10 | |
702 | _killed_by_death: | |
703 | beq _killed_by_death | |
704 | nop | |
705 | ||
706 | ;; We'll see this in ksymoops dumps. | |
707 | Watchdog_bite: | |
708 | ||
709 | #ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY | |
710 | ;; We just restart the watchdog here to be sure we dont get | |
711 | ;; hit while printing the watchdogmsg below | |
712 | ;; This restart is compatible with the rest of the C-code, so | |
713 | ;; the C-code can keep restarting the watchdog after this point. | |
714 | ;; The non-NICE_DOGGY code below though, disables the possibility | |
715 | ;; to restart since it changes the watchdog key, to avoid any | |
716 | ;; buggy loops etc. keeping the watchdog alive after this. | |
717 | jsr reset_watchdog | |
718 | #else | |
719 | ||
720 | ;; We need to extend the 3.3ms after the NMI at watchdog bite, so we have | |
721 | ;; time for an oops-dump over a 115k2 serial wire. Another 100ms should do. | |
722 | ||
723 | ;; Change the watchdog key to an arbitrary 3-bit value and restart the | |
724 | ;; watchdog. | |
725 | #define WD_INIT 2 | |
726 | moveq IO_FIELD (R_WATCHDOG, key, WD_INIT), $r10 | |
727 | move.d R_WATCHDOG, $r11 | |
728 | ||
729 | move.d $r10, [$r11] | |
730 | moveq IO_FIELD (R_WATCHDOG, key, \ | |
731 | IO_EXTRACT (R_WATCHDOG, key, \ | |
732 | IO_MASK (R_WATCHDOG, key)) \ | |
733 | ^ WD_INIT) \ | |
734 | | IO_STATE (R_WATCHDOG, enable, start), $r10 | |
735 | move.d $r10, [$r11] | |
736 | ||
737 | #endif | |
738 | ||
739 | ;; Note that we don't do "setf m" here (or after two necessary NOPs), | |
740 | ;; since *not* doing that saves us from re-entrancy checks. We don't want | |
741 | ;; to get here again due to possible subsequent NMIs; we want the watchdog | |
742 | ;; to reset us. | |
743 | ||
744 | move.d _watchdogmsg,$r10 | |
745 | jsr printk | |
746 | ||
747 | move.d $sp, $r10 | |
748 | jsr watchdog_bite_hook | |
749 | ||
750 | ;; This nop is here so we see the "Watchdog_bite" label in ksymoops dumps | |
751 | ;; rather than "spurious_interrupt". | |
752 | nop | |
753 | ;; At this point we drop down into spurious_interrupt, which will do a | |
754 | ;; hard reset. | |
755 | ||
756 | .section .rodata,"a" | |
757 | _watchdogmsg: | |
758 | .ascii "Oops: bitten by watchdog\n\0" | |
759 | .previous | |
760 | ||
761 | #endif /* CONFIG_ETRAX_WATCHDOG and not CONFIG_SVINTO_SIM */ | |
762 | ||
763 | spurious_interrupt: | |
764 | di | |
765 | jump hard_reset_now | |
766 | ||
767 | ;; this handles the case when multiple interrupts arrive at the same time | |
768 | ;; we jump to the first set interrupt bit in a priority fashion | |
769 | ;; the hardware will call the unserved interrupts after the handler finishes | |
770 | ||
771 | multiple_interrupt: | |
772 | ;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!! | |
773 | move $irp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame | |
774 | push $srp | |
775 | push $dccr | |
776 | push $mof | |
777 | di | |
778 | subq 14*4, $sp | |
779 | movem $r13, [$sp] | |
780 | push $r10 ; push orig_r10 | |
781 | clear.d [$sp=$sp-4] ; frametype == 0, normal frame | |
782 | ||
7b275523 JN |
783 | move.d $sp, $r10 |
784 | jsr do_multiple_IRQ | |
785 | ||
1da177e4 LT |
786 | jump ret_from_intr |
787 | ||
788 | do_sigtrap: | |
789 | ;; | |
790 | ;; SIGTRAP the process that executed the break instruction. | |
791 | ;; Make a frame that Rexit in entry.S expects. | |
792 | ;; | |
793 | move $brp, [$sp=$sp-16] ; Push BRP while faking a cpu status record. | |
794 | push $srp ; Push subroutine return pointer. | |
795 | push $dccr ; Push condition codes. | |
796 | push $mof ; Push multiply overflow reg. | |
797 | di ; Need to disable irq's at this point. | |
798 | subq 14*4, $sp ; Make room for r0-r13. | |
799 | movem $r13, [$sp] ; Push the r0-r13 registers. | |
800 | push $r10 ; Push orig_r10. | |
801 | clear.d [$sp=$sp-4] ; Frametype - this is a normal stackframe. | |
802 | ||
803 | movs.w -8192,$r9 ; THREAD_SIZE == 8192 | |
804 | and.d $sp, $r9 | |
805 | move.d [$r9+TI_task], $r10 | |
806 | move.d [$r10+TASK_pid], $r10 ; current->pid as arg1. | |
807 | moveq 5, $r11 ; SIGTRAP as arg2. | |
808 | jsr sys_kill | |
809 | jump ret_from_intr ; Use the return routine for interrupts. | |
810 | ||
811 | gdb_handle_breakpoint: | |
812 | push $dccr | |
813 | push $r0 | |
814 | #ifdef CONFIG_ETRAX_KGDB | |
815 | move $dccr, $r0 ; U-flag not affected by previous insns. | |
816 | btstq 8, $r0 ; Test the U-flag. | |
817 | bmi _ugdb_handle_breakpoint ; Go to user mode debugging. | |
818 | nop ; Empty delay slot (cannot pop r0 here). | |
819 | pop $r0 ; Restore r0. | |
820 | ba kgdb_handle_breakpoint ; Go to kernel debugging. | |
821 | pop $dccr ; Restore dccr in delay slot. | |
822 | #endif | |
823 | ||
824 | _ugdb_handle_breakpoint: | |
825 | move $brp, $r0 ; Use r0 temporarily for calculation. | |
826 | subq 2, $r0 ; Set to address of previous instruction. | |
827 | move $r0, $brp | |
828 | pop $r0 ; Restore r0. | |
829 | ba do_sigtrap ; SIGTRAP the offending process. | |
830 | pop $dccr ; Restore dccr in delay slot. | |
831 | ||
7b275523 JN |
832 | .global kernel_execve |
833 | kernel_execve: | |
834 | move.d __NR_execve, $r9 | |
835 | break 13 | |
836 | ret | |
837 | nop | |
838 | ||
1da177e4 LT |
839 | .data |
840 | ||
841 | hw_bp_trigs: | |
842 | .space 64*4 | |
843 | hw_bp_trig_ptr: | |
844 | .dword hw_bp_trigs | |
845 | ||
846 | .section .rodata,"a" | |
847 | sys_call_table: | |
848 | .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ | |
849 | .long sys_exit | |
850 | .long sys_fork | |
851 | .long sys_read | |
852 | .long sys_write | |
853 | .long sys_open /* 5 */ | |
854 | .long sys_close | |
855 | .long sys_waitpid | |
856 | .long sys_creat | |
857 | .long sys_link | |
858 | .long sys_unlink /* 10 */ | |
859 | .long sys_execve | |
860 | .long sys_chdir | |
861 | .long sys_time | |
862 | .long sys_mknod | |
863 | .long sys_chmod /* 15 */ | |
864 | .long sys_lchown16 | |
865 | .long sys_ni_syscall /* old break syscall holder */ | |
866 | .long sys_stat | |
867 | .long sys_lseek | |
868 | .long sys_getpid /* 20 */ | |
869 | .long sys_mount | |
870 | .long sys_oldumount | |
871 | .long sys_setuid16 | |
872 | .long sys_getuid16 | |
873 | .long sys_stime /* 25 */ | |
874 | .long sys_ptrace | |
875 | .long sys_alarm | |
876 | .long sys_fstat | |
877 | .long sys_pause | |
878 | .long sys_utime /* 30 */ | |
879 | .long sys_ni_syscall /* old stty syscall holder */ | |
880 | .long sys_ni_syscall /* old gtty syscall holder */ | |
881 | .long sys_access | |
882 | .long sys_nice | |
883 | .long sys_ni_syscall /* 35 old ftime syscall holder */ | |
884 | .long sys_sync | |
885 | .long sys_kill | |
886 | .long sys_rename | |
887 | .long sys_mkdir | |
888 | .long sys_rmdir /* 40 */ | |
889 | .long sys_dup | |
890 | .long sys_pipe | |
891 | .long sys_times | |
892 | .long sys_ni_syscall /* old prof syscall holder */ | |
893 | .long sys_brk /* 45 */ | |
894 | .long sys_setgid16 | |
895 | .long sys_getgid16 | |
896 | .long sys_signal | |
897 | .long sys_geteuid16 | |
898 | .long sys_getegid16 /* 50 */ | |
899 | .long sys_acct | |
900 | .long sys_umount /* recycled never used phys( */ | |
901 | .long sys_ni_syscall /* old lock syscall holder */ | |
902 | .long sys_ioctl | |
903 | .long sys_fcntl /* 55 */ | |
904 | .long sys_ni_syscall /* old mpx syscall holder */ | |
905 | .long sys_setpgid | |
906 | .long sys_ni_syscall /* old ulimit syscall holder */ | |
907 | .long sys_ni_syscall /* old sys_olduname holder */ | |
908 | .long sys_umask /* 60 */ | |
909 | .long sys_chroot | |
910 | .long sys_ustat | |
911 | .long sys_dup2 | |
912 | .long sys_getppid | |
913 | .long sys_getpgrp /* 65 */ | |
914 | .long sys_setsid | |
915 | .long sys_sigaction | |
916 | .long sys_sgetmask | |
917 | .long sys_ssetmask | |
918 | .long sys_setreuid16 /* 70 */ | |
919 | .long sys_setregid16 | |
920 | .long sys_sigsuspend | |
921 | .long sys_sigpending | |
922 | .long sys_sethostname | |
923 | .long sys_setrlimit /* 75 */ | |
924 | .long sys_old_getrlimit | |
925 | .long sys_getrusage | |
926 | .long sys_gettimeofday | |
927 | .long sys_settimeofday | |
928 | .long sys_getgroups16 /* 80 */ | |
929 | .long sys_setgroups16 | |
930 | .long sys_select /* was old_select in Linux/E100 */ | |
931 | .long sys_symlink | |
932 | .long sys_lstat | |
933 | .long sys_readlink /* 85 */ | |
934 | .long sys_uselib | |
935 | .long sys_swapon | |
936 | .long sys_reboot | |
937 | .long old_readdir | |
938 | .long old_mmap /* 90 */ | |
939 | .long sys_munmap | |
940 | .long sys_truncate | |
941 | .long sys_ftruncate | |
942 | .long sys_fchmod | |
943 | .long sys_fchown16 /* 95 */ | |
944 | .long sys_getpriority | |
945 | .long sys_setpriority | |
946 | .long sys_ni_syscall /* old profil syscall holder */ | |
947 | .long sys_statfs | |
948 | .long sys_fstatfs /* 100 */ | |
949 | .long sys_ni_syscall /* sys_ioperm in i386 */ | |
950 | .long sys_socketcall | |
951 | .long sys_syslog | |
952 | .long sys_setitimer | |
953 | .long sys_getitimer /* 105 */ | |
954 | .long sys_newstat | |
955 | .long sys_newlstat | |
956 | .long sys_newfstat | |
957 | .long sys_ni_syscall /* old sys_uname holder */ | |
958 | .long sys_ni_syscall /* sys_iopl in i386 */ | |
959 | .long sys_vhangup | |
960 | .long sys_ni_syscall /* old "idle" system call */ | |
961 | .long sys_ni_syscall /* vm86old in i386 */ | |
962 | .long sys_wait4 | |
963 | .long sys_swapoff /* 115 */ | |
964 | .long sys_sysinfo | |
965 | .long sys_ipc | |
966 | .long sys_fsync | |
967 | .long sys_sigreturn | |
968 | .long sys_clone /* 120 */ | |
969 | .long sys_setdomainname | |
970 | .long sys_newuname | |
971 | .long sys_ni_syscall /* sys_modify_ldt */ | |
972 | .long sys_adjtimex | |
973 | .long sys_mprotect /* 125 */ | |
974 | .long sys_sigprocmask | |
975 | .long sys_ni_syscall /* old "create_module" */ | |
976 | .long sys_init_module | |
977 | .long sys_delete_module | |
978 | .long sys_ni_syscall /* 130: old "get_kernel_syms" */ | |
979 | .long sys_quotactl | |
980 | .long sys_getpgid | |
981 | .long sys_fchdir | |
982 | .long sys_bdflush | |
983 | .long sys_sysfs /* 135 */ | |
984 | .long sys_personality | |
985 | .long sys_ni_syscall /* for afs_syscall */ | |
986 | .long sys_setfsuid16 | |
987 | .long sys_setfsgid16 | |
988 | .long sys_llseek /* 140 */ | |
989 | .long sys_getdents | |
990 | .long sys_select | |
991 | .long sys_flock | |
992 | .long sys_msync | |
993 | .long sys_readv /* 145 */ | |
994 | .long sys_writev | |
995 | .long sys_getsid | |
996 | .long sys_fdatasync | |
997 | .long sys_sysctl | |
998 | .long sys_mlock /* 150 */ | |
999 | .long sys_munlock | |
1000 | .long sys_mlockall | |
1001 | .long sys_munlockall | |
1002 | .long sys_sched_setparam | |
1003 | .long sys_sched_getparam /* 155 */ | |
1004 | .long sys_sched_setscheduler | |
1005 | .long sys_sched_getscheduler | |
1006 | .long sys_sched_yield | |
1007 | .long sys_sched_get_priority_max | |
1008 | .long sys_sched_get_priority_min /* 160 */ | |
1009 | .long sys_sched_rr_get_interval | |
1010 | .long sys_nanosleep | |
1011 | .long sys_mremap | |
1012 | .long sys_setresuid16 | |
1013 | .long sys_getresuid16 /* 165 */ | |
1014 | .long sys_ni_syscall /* sys_vm86 */ | |
1015 | .long sys_ni_syscall /* Old sys_query_module */ | |
1016 | .long sys_poll | |
1017 | .long sys_nfsservctl | |
1018 | .long sys_setresgid16 /* 170 */ | |
1019 | .long sys_getresgid16 | |
1020 | .long sys_prctl | |
1021 | .long sys_rt_sigreturn | |
1022 | .long sys_rt_sigaction | |
1023 | .long sys_rt_sigprocmask /* 175 */ | |
1024 | .long sys_rt_sigpending | |
1025 | .long sys_rt_sigtimedwait | |
1026 | .long sys_rt_sigqueueinfo | |
1027 | .long sys_rt_sigsuspend | |
1028 | .long sys_pread64 /* 180 */ | |
1029 | .long sys_pwrite64 | |
1030 | .long sys_chown16 | |
1031 | .long sys_getcwd | |
1032 | .long sys_capget | |
1033 | .long sys_capset /* 185 */ | |
1034 | .long sys_sigaltstack | |
1035 | .long sys_sendfile | |
1036 | .long sys_ni_syscall /* streams1 */ | |
1037 | .long sys_ni_syscall /* streams2 */ | |
1038 | .long sys_vfork /* 190 */ | |
1039 | .long sys_getrlimit | |
1040 | .long sys_mmap2 | |
1041 | .long sys_truncate64 | |
1042 | .long sys_ftruncate64 | |
1043 | .long sys_stat64 /* 195 */ | |
1044 | .long sys_lstat64 | |
1045 | .long sys_fstat64 | |
1046 | .long sys_lchown | |
1047 | .long sys_getuid | |
1048 | .long sys_getgid /* 200 */ | |
1049 | .long sys_geteuid | |
1050 | .long sys_getegid | |
1051 | .long sys_setreuid | |
1052 | .long sys_setregid | |
1053 | .long sys_getgroups /* 205 */ | |
1054 | .long sys_setgroups | |
1055 | .long sys_fchown | |
1056 | .long sys_setresuid | |
1057 | .long sys_getresuid | |
1058 | .long sys_setresgid /* 210 */ | |
1059 | .long sys_getresgid | |
1060 | .long sys_chown | |
1061 | .long sys_setuid | |
1062 | .long sys_setgid | |
1063 | .long sys_setfsuid /* 215 */ | |
1064 | .long sys_setfsgid | |
1065 | .long sys_pivot_root | |
1066 | .long sys_mincore | |
1067 | .long sys_madvise | |
1068 | .long sys_getdents64 /* 220 */ | |
1069 | .long sys_fcntl64 | |
1070 | .long sys_ni_syscall /* reserved for TUX */ | |
1071 | .long sys_ni_syscall | |
1072 | .long sys_gettid | |
1073 | .long sys_readahead /* 225 */ | |
1074 | .long sys_setxattr | |
1075 | .long sys_lsetxattr | |
1076 | .long sys_fsetxattr | |
1077 | .long sys_getxattr | |
1078 | .long sys_lgetxattr /* 230 */ | |
1079 | .long sys_fgetxattr | |
1080 | .long sys_listxattr | |
1081 | .long sys_llistxattr | |
1082 | .long sys_flistxattr | |
1083 | .long sys_removexattr /* 235 */ | |
1084 | .long sys_lremovexattr | |
1085 | .long sys_fremovexattr | |
1086 | .long sys_tkill | |
1087 | .long sys_sendfile64 | |
1088 | .long sys_futex /* 240 */ | |
1089 | .long sys_sched_setaffinity | |
1090 | .long sys_sched_getaffinity | |
1091 | .long sys_ni_syscall /* sys_set_thread_area */ | |
1092 | .long sys_ni_syscall /* sys_get_thread_area */ | |
1093 | .long sys_io_setup /* 245 */ | |
1094 | .long sys_io_destroy | |
1095 | .long sys_io_getevents | |
1096 | .long sys_io_submit | |
1097 | .long sys_io_cancel | |
1098 | .long sys_fadvise64 /* 250 */ | |
1099 | .long sys_ni_syscall | |
1100 | .long sys_exit_group | |
1101 | .long sys_lookup_dcookie | |
1102 | .long sys_epoll_create | |
1103 | .long sys_epoll_ctl /* 255 */ | |
1104 | .long sys_epoll_wait | |
1105 | .long sys_remap_file_pages | |
1106 | .long sys_set_tid_address | |
1107 | .long sys_timer_create | |
1108 | .long sys_timer_settime /* 260 */ | |
1109 | .long sys_timer_gettime | |
1110 | .long sys_timer_getoverrun | |
1111 | .long sys_timer_delete | |
1112 | .long sys_clock_settime | |
1113 | .long sys_clock_gettime /* 265 */ | |
1114 | .long sys_clock_getres | |
1115 | .long sys_clock_nanosleep | |
1116 | .long sys_statfs64 | |
1117 | .long sys_fstatfs64 | |
1118 | .long sys_tgkill /* 270 */ | |
1119 | .long sys_utimes | |
1120 | .long sys_fadvise64_64 | |
1121 | .long sys_ni_syscall /* sys_vserver */ | |
1122 | .long sys_ni_syscall /* sys_mbind */ | |
1123 | .long sys_ni_syscall /* 275 sys_get_mempolicy */ | |
1124 | .long sys_ni_syscall /* sys_set_mempolicy */ | |
1125 | .long sys_mq_open | |
1126 | .long sys_mq_unlink | |
1127 | .long sys_mq_timedsend | |
1128 | .long sys_mq_timedreceive /* 280 */ | |
1129 | .long sys_mq_notify | |
1130 | .long sys_mq_getsetattr | |
1131 | .long sys_ni_syscall /* reserved for kexec */ | |
1132 | .long sys_waitid | |
7cf32cad MS |
1133 | .long sys_ni_syscall /* 285 */ /* available */ |
1134 | .long sys_add_key | |
1135 | .long sys_request_key | |
1136 | .long sys_keyctl | |
0c3537ff JN |
1137 | .long sys_ioprio_set |
1138 | .long sys_ioprio_get /* 290 */ | |
1139 | .long sys_inotify_init | |
1140 | .long sys_inotify_add_watch | |
1141 | .long sys_inotify_rm_watch | |
1142 | .long sys_migrate_pages | |
1143 | .long sys_openat /* 295 */ | |
1144 | .long sys_mkdirat | |
1145 | .long sys_mknodat | |
1146 | .long sys_fchownat | |
1147 | .long sys_futimesat | |
1148 | .long sys_fstatat64 /* 300 */ | |
1149 | .long sys_unlinkat | |
1150 | .long sys_renameat | |
1151 | .long sys_linkat | |
1152 | .long sys_symlinkat | |
1153 | .long sys_readlinkat /* 305 */ | |
1154 | .long sys_fchmodat | |
1155 | .long sys_faccessat | |
1156 | .long sys_pselect6 | |
1157 | .long sys_ppoll | |
1158 | .long sys_unshare /* 310 */ | |
1159 | .long sys_set_robust_list | |
1160 | .long sys_get_robust_list | |
1161 | .long sys_splice | |
1162 | .long sys_sync_file_range | |
1163 | .long sys_tee /* 315 */ | |
1164 | .long sys_vmsplice | |
1165 | .long sys_move_pages | |
1166 | .long sys_getcpu | |
1167 | .long sys_epoll_pwait | |
1168 | .long sys_utimensat /* 320 */ | |
1169 | .long sys_signalfd | |
4d672e7a | 1170 | .long sys_ni_syscall |
0c3537ff JN |
1171 | .long sys_eventfd |
1172 | .long sys_fallocate | |
1da177e4 LT |
1173 | |
1174 | /* | |
1175 | * NOTE!! This doesn't have to be exact - we just have | |
1176 | * to make sure we have _enough_ of the "sys_ni_syscall" | |
1177 | * entries. Don't panic if you notice that this hasn't | |
1178 | * been shrunk every time we add a new system call. | |
1179 | */ | |
1180 | ||
1181 | .rept NR_syscalls-(.-sys_call_table)/4 | |
1182 | .long sys_ni_syscall | |
1183 | .endr | |
1184 |