Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
934135c1 | 2 | * SuperH process tracing |
1da177e4 | 3 | * |
934135c1 | 4 | * Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka |
34d0b5af | 5 | * Copyright (C) 2002 - 2009 Paul Mundt |
1da177e4 | 6 | * |
934135c1 PM |
7 | * Audit support by Yuichi Nakamura <ynakam@hitachisoft.jp> |
8 | * | |
9 | * This file is subject to the terms and conditions of the GNU General Public | |
10 | * License. See the file "COPYING" in the main directory of this archive | |
11 | * for more details. | |
1da177e4 | 12 | */ |
1da177e4 LT |
13 | #include <linux/kernel.h> |
14 | #include <linux/sched.h> | |
15 | #include <linux/mm.h> | |
16 | #include <linux/smp.h> | |
1da177e4 LT |
17 | #include <linux/errno.h> |
18 | #include <linux/ptrace.h> | |
19 | #include <linux/user.h> | |
1da177e4 | 20 | #include <linux/security.h> |
7ed20e1a | 21 | #include <linux/signal.h> |
9432f968 | 22 | #include <linux/io.h> |
1322b9de | 23 | #include <linux/audit.h> |
c4637d47 | 24 | #include <linux/seccomp.h> |
ab99c733 | 25 | #include <linux/tracehook.h> |
934135c1 PM |
26 | #include <linux/elf.h> |
27 | #include <linux/regset.h> | |
34d0b5af | 28 | #include <linux/hw_breakpoint.h> |
1da177e4 LT |
29 | #include <asm/uaccess.h> |
30 | #include <asm/pgtable.h> | |
31 | #include <asm/system.h> | |
32 | #include <asm/processor.h> | |
33 | #include <asm/mmu_context.h> | |
fa43972f | 34 | #include <asm/syscalls.h> |
e7ab3cd2 | 35 | #include <asm/fpu.h> |
1da177e4 | 36 | |
a74f7e04 PM |
37 | #define CREATE_TRACE_POINTS |
38 | #include <trace/events/syscalls.h> | |
c652d780 | 39 | |
1da177e4 LT |
40 | /* |
41 | * This routine will get a word off of the process kernel stack. | |
42 | */ | |
43 | static inline int get_stack_long(struct task_struct *task, int offset) | |
44 | { | |
45 | unsigned char *stack; | |
46 | ||
3cf0f4ec | 47 | stack = (unsigned char *)task_pt_regs(task); |
1da177e4 LT |
48 | stack += offset; |
49 | return (*((int *)stack)); | |
50 | } | |
51 | ||
52 | /* | |
53 | * This routine will put a word on the process kernel stack. | |
54 | */ | |
55 | static inline int put_stack_long(struct task_struct *task, int offset, | |
56 | unsigned long data) | |
57 | { | |
58 | unsigned char *stack; | |
59 | ||
3cf0f4ec | 60 | stack = (unsigned char *)task_pt_regs(task); |
1da177e4 LT |
61 | stack += offset; |
62 | *(unsigned long *) stack = data; | |
63 | return 0; | |
64 | } | |
65 | ||
34d0b5af PM |
66 | void ptrace_triggered(struct perf_event *bp, int nmi, |
67 | struct perf_sample_data *data, struct pt_regs *regs) | |
c459dbf2 | 68 | { |
34d0b5af PM |
69 | struct perf_event_attr attr; |
70 | ||
71 | /* | |
72 | * Disable the breakpoint request here since ptrace has defined a | |
73 | * one-shot behaviour for breakpoint exceptions. | |
74 | */ | |
75 | attr = bp->attr; | |
76 | attr.disabled = true; | |
77 | modify_user_hw_breakpoint(bp, &attr); | |
78 | } | |
79 | ||
80 | static int set_single_step(struct task_struct *tsk, unsigned long addr) | |
c459dbf2 | 81 | { |
34d0b5af PM |
82 | struct thread_struct *thread = &tsk->thread; |
83 | struct perf_event *bp; | |
84 | struct perf_event_attr attr; | |
85 | ||
86 | bp = thread->ptrace_bps[0]; | |
87 | if (!bp) { | |
73266fc1 | 88 | ptrace_breakpoint_init(&attr); |
34d0b5af PM |
89 | |
90 | attr.bp_addr = addr; | |
91 | attr.bp_len = HW_BREAKPOINT_LEN_2; | |
92 | attr.bp_type = HW_BREAKPOINT_R; | |
c459dbf2 | 93 | |
34d0b5af PM |
94 | bp = register_user_hw_breakpoint(&attr, ptrace_triggered, tsk); |
95 | if (IS_ERR(bp)) | |
96 | return PTR_ERR(bp); | |
97 | ||
98 | thread->ptrace_bps[0] = bp; | |
99 | } else { | |
100 | int err; | |
101 | ||
102 | attr = bp->attr; | |
103 | attr.bp_addr = addr; | |
fb7f045a DE |
104 | /* reenable breakpoint */ |
105 | attr.disabled = false; | |
34d0b5af PM |
106 | err = modify_user_hw_breakpoint(bp, &attr); |
107 | if (unlikely(err)) | |
108 | return err; | |
109 | } | |
110 | ||
111 | return 0; | |
112 | } | |
c459dbf2 | 113 | |
c459dbf2 PM |
114 | void user_enable_single_step(struct task_struct *child) |
115 | { | |
34d0b5af | 116 | unsigned long pc = get_stack_long(child, offsetof(struct pt_regs, pc)); |
c459dbf2 PM |
117 | |
118 | set_tsk_thread_flag(child, TIF_SINGLESTEP); | |
34d0b5af | 119 | |
e0ac8457 FW |
120 | if (ptrace_get_breakpoints(child) < 0) |
121 | return; | |
122 | ||
34d0b5af | 123 | set_single_step(child, pc); |
e0ac8457 | 124 | ptrace_put_breakpoints(child); |
c459dbf2 PM |
125 | } |
126 | ||
127 | void user_disable_single_step(struct task_struct *child) | |
9432f968 SM |
128 | { |
129 | clear_tsk_thread_flag(child, TIF_SINGLESTEP); | |
9432f968 SM |
130 | } |
131 | ||
1da177e4 LT |
132 | /* |
133 | * Called by kernel/ptrace.c when detaching.. | |
134 | * | |
135 | * Make sure single step bits etc are not set. | |
136 | */ | |
137 | void ptrace_disable(struct task_struct *child) | |
138 | { | |
c459dbf2 | 139 | user_disable_single_step(child); |
1da177e4 LT |
140 | } |
141 | ||
934135c1 PM |
142 | static int genregs_get(struct task_struct *target, |
143 | const struct user_regset *regset, | |
144 | unsigned int pos, unsigned int count, | |
145 | void *kbuf, void __user *ubuf) | |
146 | { | |
147 | const struct pt_regs *regs = task_pt_regs(target); | |
148 | int ret; | |
149 | ||
150 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, | |
151 | regs->regs, | |
152 | 0, 16 * sizeof(unsigned long)); | |
153 | if (!ret) | |
154 | /* PC, PR, SR, GBR, MACH, MACL, TRA */ | |
155 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, | |
156 | ®s->pc, | |
157 | offsetof(struct pt_regs, pc), | |
158 | sizeof(struct pt_regs)); | |
159 | if (!ret) | |
160 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, | |
161 | sizeof(struct pt_regs), -1); | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
166 | static int genregs_set(struct task_struct *target, | |
167 | const struct user_regset *regset, | |
168 | unsigned int pos, unsigned int count, | |
169 | const void *kbuf, const void __user *ubuf) | |
170 | { | |
171 | struct pt_regs *regs = task_pt_regs(target); | |
172 | int ret; | |
173 | ||
174 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, | |
175 | regs->regs, | |
176 | 0, 16 * sizeof(unsigned long)); | |
177 | if (!ret && count > 0) | |
178 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, | |
179 | ®s->pc, | |
180 | offsetof(struct pt_regs, pc), | |
181 | sizeof(struct pt_regs)); | |
182 | if (!ret) | |
183 | ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, | |
184 | sizeof(struct pt_regs), -1); | |
185 | ||
186 | return ret; | |
187 | } | |
188 | ||
e7ab3cd2 PM |
189 | #ifdef CONFIG_SH_FPU |
190 | int fpregs_get(struct task_struct *target, | |
191 | const struct user_regset *regset, | |
192 | unsigned int pos, unsigned int count, | |
193 | void *kbuf, void __user *ubuf) | |
194 | { | |
195 | int ret; | |
196 | ||
197 | ret = init_fpu(target); | |
198 | if (ret) | |
199 | return ret; | |
200 | ||
201 | if ((boot_cpu_data.flags & CPU_HAS_FPU)) | |
202 | return user_regset_copyout(&pos, &count, &kbuf, &ubuf, | |
0ea820cf | 203 | &target->thread.xstate->hardfpu, 0, -1); |
e7ab3cd2 PM |
204 | |
205 | return user_regset_copyout(&pos, &count, &kbuf, &ubuf, | |
0ea820cf | 206 | &target->thread.xstate->softfpu, 0, -1); |
e7ab3cd2 PM |
207 | } |
208 | ||
209 | static int fpregs_set(struct task_struct *target, | |
210 | const struct user_regset *regset, | |
211 | unsigned int pos, unsigned int count, | |
212 | const void *kbuf, const void __user *ubuf) | |
213 | { | |
214 | int ret; | |
215 | ||
216 | ret = init_fpu(target); | |
217 | if (ret) | |
218 | return ret; | |
219 | ||
220 | set_stopped_child_used_math(target); | |
221 | ||
222 | if ((boot_cpu_data.flags & CPU_HAS_FPU)) | |
223 | return user_regset_copyin(&pos, &count, &kbuf, &ubuf, | |
0ea820cf | 224 | &target->thread.xstate->hardfpu, 0, -1); |
e7ab3cd2 PM |
225 | |
226 | return user_regset_copyin(&pos, &count, &kbuf, &ubuf, | |
0ea820cf | 227 | &target->thread.xstate->softfpu, 0, -1); |
e7ab3cd2 PM |
228 | } |
229 | ||
230 | static int fpregs_active(struct task_struct *target, | |
231 | const struct user_regset *regset) | |
232 | { | |
233 | return tsk_used_math(target) ? regset->n : 0; | |
234 | } | |
235 | #endif | |
236 | ||
5dadb343 PM |
237 | #ifdef CONFIG_SH_DSP |
238 | static int dspregs_get(struct task_struct *target, | |
239 | const struct user_regset *regset, | |
240 | unsigned int pos, unsigned int count, | |
241 | void *kbuf, void __user *ubuf) | |
242 | { | |
01ab1039 MT |
243 | const struct pt_dspregs *regs = |
244 | (struct pt_dspregs *)&target->thread.dsp_status.dsp_regs; | |
5dadb343 PM |
245 | int ret; |
246 | ||
247 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, regs, | |
248 | 0, sizeof(struct pt_dspregs)); | |
249 | if (!ret) | |
250 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, | |
251 | sizeof(struct pt_dspregs), -1); | |
252 | ||
253 | return ret; | |
254 | } | |
255 | ||
256 | static int dspregs_set(struct task_struct *target, | |
257 | const struct user_regset *regset, | |
258 | unsigned int pos, unsigned int count, | |
259 | const void *kbuf, const void __user *ubuf) | |
260 | { | |
01ab1039 MT |
261 | struct pt_dspregs *regs = |
262 | (struct pt_dspregs *)&target->thread.dsp_status.dsp_regs; | |
5dadb343 PM |
263 | int ret; |
264 | ||
265 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs, | |
266 | 0, sizeof(struct pt_dspregs)); | |
267 | if (!ret) | |
268 | ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, | |
269 | sizeof(struct pt_dspregs), -1); | |
270 | ||
271 | return ret; | |
272 | } | |
72461997 PM |
273 | |
274 | static int dspregs_active(struct task_struct *target, | |
275 | const struct user_regset *regset) | |
276 | { | |
277 | struct pt_regs *regs = task_pt_regs(target); | |
278 | ||
279 | return regs->sr & SR_DSP ? regset->n : 0; | |
280 | } | |
5dadb343 PM |
281 | #endif |
282 | ||
eaaaeef3 PM |
283 | const struct pt_regs_offset regoffset_table[] = { |
284 | REGS_OFFSET_NAME(0), | |
285 | REGS_OFFSET_NAME(1), | |
286 | REGS_OFFSET_NAME(2), | |
287 | REGS_OFFSET_NAME(3), | |
288 | REGS_OFFSET_NAME(4), | |
289 | REGS_OFFSET_NAME(5), | |
290 | REGS_OFFSET_NAME(6), | |
291 | REGS_OFFSET_NAME(7), | |
292 | REGS_OFFSET_NAME(8), | |
293 | REGS_OFFSET_NAME(9), | |
294 | REGS_OFFSET_NAME(10), | |
295 | REGS_OFFSET_NAME(11), | |
296 | REGS_OFFSET_NAME(12), | |
297 | REGS_OFFSET_NAME(13), | |
298 | REGS_OFFSET_NAME(14), | |
299 | REGS_OFFSET_NAME(15), | |
300 | REG_OFFSET_NAME(pc), | |
301 | REG_OFFSET_NAME(pr), | |
302 | REG_OFFSET_NAME(sr), | |
303 | REG_OFFSET_NAME(gbr), | |
304 | REG_OFFSET_NAME(mach), | |
305 | REG_OFFSET_NAME(macl), | |
306 | REG_OFFSET_NAME(tra), | |
307 | REG_OFFSET_END, | |
308 | }; | |
309 | ||
934135c1 PM |
310 | /* |
311 | * These are our native regset flavours. | |
312 | */ | |
313 | enum sh_regset { | |
314 | REGSET_GENERAL, | |
e7ab3cd2 PM |
315 | #ifdef CONFIG_SH_FPU |
316 | REGSET_FPU, | |
317 | #endif | |
5dadb343 PM |
318 | #ifdef CONFIG_SH_DSP |
319 | REGSET_DSP, | |
320 | #endif | |
934135c1 PM |
321 | }; |
322 | ||
323 | static const struct user_regset sh_regsets[] = { | |
324 | /* | |
325 | * Format is: | |
326 | * R0 --> R15 | |
327 | * PC, PR, SR, GBR, MACH, MACL, TRA | |
328 | */ | |
329 | [REGSET_GENERAL] = { | |
330 | .core_note_type = NT_PRSTATUS, | |
331 | .n = ELF_NGREG, | |
332 | .size = sizeof(long), | |
333 | .align = sizeof(long), | |
334 | .get = genregs_get, | |
335 | .set = genregs_set, | |
336 | }, | |
5dadb343 | 337 | |
e7ab3cd2 PM |
338 | #ifdef CONFIG_SH_FPU |
339 | [REGSET_FPU] = { | |
340 | .core_note_type = NT_PRFPREG, | |
341 | .n = sizeof(struct user_fpu_struct) / sizeof(long), | |
342 | .size = sizeof(long), | |
343 | .align = sizeof(long), | |
344 | .get = fpregs_get, | |
345 | .set = fpregs_set, | |
346 | .active = fpregs_active, | |
347 | }, | |
348 | #endif | |
349 | ||
5dadb343 PM |
350 | #ifdef CONFIG_SH_DSP |
351 | [REGSET_DSP] = { | |
352 | .n = sizeof(struct pt_dspregs) / sizeof(long), | |
353 | .size = sizeof(long), | |
354 | .align = sizeof(long), | |
355 | .get = dspregs_get, | |
356 | .set = dspregs_set, | |
72461997 | 357 | .active = dspregs_active, |
5dadb343 PM |
358 | }, |
359 | #endif | |
934135c1 PM |
360 | }; |
361 | ||
362 | static const struct user_regset_view user_sh_native_view = { | |
363 | .name = "sh", | |
364 | .e_machine = EM_SH, | |
365 | .regsets = sh_regsets, | |
366 | .n = ARRAY_SIZE(sh_regsets), | |
367 | }; | |
368 | ||
f9540ece PM |
369 | const struct user_regset_view *task_user_regset_view(struct task_struct *task) |
370 | { | |
371 | return &user_sh_native_view; | |
372 | } | |
373 | ||
9b05a69e NK |
374 | long arch_ptrace(struct task_struct *child, long request, |
375 | unsigned long addr, unsigned long data) | |
1da177e4 | 376 | { |
fa43972f | 377 | unsigned long __user *datap = (unsigned long __user *)data; |
1da177e4 LT |
378 | int ret; |
379 | ||
1da177e4 | 380 | switch (request) { |
1da177e4 LT |
381 | /* read the word at location addr in the USER area. */ |
382 | case PTRACE_PEEKUSR: { | |
383 | unsigned long tmp; | |
384 | ||
385 | ret = -EIO; | |
9432f968 | 386 | if ((addr & 3) || addr < 0 || |
1da177e4 LT |
387 | addr > sizeof(struct user) - 3) |
388 | break; | |
389 | ||
390 | if (addr < sizeof(struct pt_regs)) | |
391 | tmp = get_stack_long(child, addr); | |
9e1cb206 NK |
392 | else if (addr >= offsetof(struct user, fpu) && |
393 | addr < offsetof(struct user, u_fpvalid)) { | |
1da177e4 | 394 | if (!tsk_used_math(child)) { |
9e1cb206 | 395 | if (addr == offsetof(struct user, fpu.fpscr)) |
1da177e4 LT |
396 | tmp = FPSCR_INIT; |
397 | else | |
398 | tmp = 0; | |
9e1cb206 NK |
399 | } else { |
400 | unsigned long index; | |
c49b6ecf PE |
401 | ret = init_fpu(child); |
402 | if (ret) | |
403 | break; | |
9e1cb206 | 404 | index = addr - offsetof(struct user, fpu); |
9b05a69e | 405 | tmp = ((unsigned long *)child->thread.xstate) |
9e1cb206 NK |
406 | [index >> 2]; |
407 | } | |
408 | } else if (addr == offsetof(struct user, u_fpvalid)) | |
1da177e4 | 409 | tmp = !!tsk_used_math(child); |
ba0d4740 PG |
410 | else if (addr == PT_TEXT_ADDR) |
411 | tmp = child->mm->start_code; | |
412 | else if (addr == PT_DATA_ADDR) | |
413 | tmp = child->mm->start_data; | |
414 | else if (addr == PT_TEXT_END_ADDR) | |
415 | tmp = child->mm->end_code; | |
416 | else if (addr == PT_TEXT_LEN) | |
417 | tmp = child->mm->end_code - child->mm->start_code; | |
1da177e4 LT |
418 | else |
419 | tmp = 0; | |
fa43972f | 420 | ret = put_user(tmp, datap); |
1da177e4 LT |
421 | break; |
422 | } | |
423 | ||
1da177e4 LT |
424 | case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ |
425 | ret = -EIO; | |
9432f968 | 426 | if ((addr & 3) || addr < 0 || |
1da177e4 LT |
427 | addr > sizeof(struct user) - 3) |
428 | break; | |
429 | ||
430 | if (addr < sizeof(struct pt_regs)) | |
431 | ret = put_stack_long(child, addr, data); | |
9e1cb206 NK |
432 | else if (addr >= offsetof(struct user, fpu) && |
433 | addr < offsetof(struct user, u_fpvalid)) { | |
434 | unsigned long index; | |
c49b6ecf PE |
435 | ret = init_fpu(child); |
436 | if (ret) | |
437 | break; | |
9e1cb206 | 438 | index = addr - offsetof(struct user, fpu); |
1da177e4 | 439 | set_stopped_child_used_math(child); |
9b05a69e | 440 | ((unsigned long *)child->thread.xstate) |
9e1cb206 | 441 | [index >> 2] = data; |
1da177e4 | 442 | ret = 0; |
9e1cb206 | 443 | } else if (addr == offsetof(struct user, u_fpvalid)) { |
1da177e4 LT |
444 | conditional_stopped_child_used_math(data, child); |
445 | ret = 0; | |
446 | } | |
447 | break; | |
448 | ||
934135c1 PM |
449 | case PTRACE_GETREGS: |
450 | return copy_regset_to_user(child, &user_sh_native_view, | |
451 | REGSET_GENERAL, | |
452 | 0, sizeof(struct pt_regs), | |
9e1cb206 | 453 | datap); |
934135c1 PM |
454 | case PTRACE_SETREGS: |
455 | return copy_regset_from_user(child, &user_sh_native_view, | |
456 | REGSET_GENERAL, | |
457 | 0, sizeof(struct pt_regs), | |
9e1cb206 | 458 | datap); |
e7ab3cd2 PM |
459 | #ifdef CONFIG_SH_FPU |
460 | case PTRACE_GETFPREGS: | |
461 | return copy_regset_to_user(child, &user_sh_native_view, | |
462 | REGSET_FPU, | |
463 | 0, sizeof(struct user_fpu_struct), | |
9e1cb206 | 464 | datap); |
e7ab3cd2 PM |
465 | case PTRACE_SETFPREGS: |
466 | return copy_regset_from_user(child, &user_sh_native_view, | |
467 | REGSET_FPU, | |
468 | 0, sizeof(struct user_fpu_struct), | |
9e1cb206 | 469 | datap); |
e7ab3cd2 | 470 | #endif |
1da177e4 | 471 | #ifdef CONFIG_SH_DSP |
5dadb343 PM |
472 | case PTRACE_GETDSPREGS: |
473 | return copy_regset_to_user(child, &user_sh_native_view, | |
474 | REGSET_DSP, | |
475 | 0, sizeof(struct pt_dspregs), | |
9e1cb206 | 476 | datap); |
5dadb343 PM |
477 | case PTRACE_SETDSPREGS: |
478 | return copy_regset_from_user(child, &user_sh_native_view, | |
479 | REGSET_DSP, | |
480 | 0, sizeof(struct pt_dspregs), | |
9e1cb206 | 481 | datap); |
1da177e4 LT |
482 | #endif |
483 | default: | |
484 | ret = ptrace_request(child, request, addr, data); | |
485 | break; | |
486 | } | |
481bed45 | 487 | |
1da177e4 LT |
488 | return ret; |
489 | } | |
490 | ||
9e5e2117 PM |
491 | static inline int audit_arch(void) |
492 | { | |
493 | int arch = EM_SH; | |
494 | ||
495 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
496 | arch |= __AUDIT_ARCH_LE; | |
497 | #endif | |
498 | ||
499 | return arch; | |
500 | } | |
501 | ||
ab99c733 | 502 | asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) |
1da177e4 | 503 | { |
ab99c733 | 504 | long ret = 0; |
1da177e4 | 505 | |
c4637d47 PM |
506 | secure_computing(regs->regs[0]); |
507 | ||
ab99c733 PM |
508 | if (test_thread_flag(TIF_SYSCALL_TRACE) && |
509 | tracehook_report_syscall_entry(regs)) | |
510 | /* | |
511 | * Tracing decided this syscall should not happen. | |
512 | * We'll return a bogus call number to get an ENOSYS | |
513 | * error, but leave the original number in regs->regs[0]. | |
514 | */ | |
515 | ret = -1L; | |
1322b9de | 516 | |
a74f7e04 PM |
517 | if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) |
518 | trace_sys_enter(regs, regs->regs[0]); | |
c652d780 | 519 | |
ab99c733 | 520 | if (unlikely(current->audit_context)) |
9e5e2117 | 521 | audit_syscall_entry(audit_arch(), regs->regs[3], |
1322b9de YN |
522 | regs->regs[4], regs->regs[5], |
523 | regs->regs[6], regs->regs[7]); | |
524 | ||
ab99c733 PM |
525 | return ret ?: regs->regs[0]; |
526 | } | |
527 | ||
528 | asmlinkage void do_syscall_trace_leave(struct pt_regs *regs) | |
529 | { | |
530 | int step; | |
531 | ||
532 | if (unlikely(current->audit_context)) | |
533 | audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]), | |
534 | regs->regs[0]); | |
535 | ||
a74f7e04 PM |
536 | if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) |
537 | trace_sys_exit(regs, regs->regs[0]); | |
c652d780 | 538 | |
ab99c733 PM |
539 | step = test_thread_flag(TIF_SINGLESTEP); |
540 | if (step || test_thread_flag(TIF_SYSCALL_TRACE)) | |
541 | tracehook_report_syscall_exit(regs, step); | |
1da177e4 | 542 | } |