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1/* ptrace.c: Sparc process tracing support.
2 *
3 * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
4 *
5 * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
6 * and David Mosberger.
7 *
8 * Added Linux support -miguel (weird, eh?, the original code was meant
9 * to emulate SunOS).
10 */
11
12#include <linux/kernel.h>
13#include <linux/sched.h>
14#include <linux/mm.h>
15#include <linux/errno.h>
16#include <linux/ptrace.h>
17#include <linux/user.h>
18#include <linux/smp.h>
19#include <linux/security.h>
20#include <linux/signal.h>
21#include <linux/regset.h>
22#include <linux/elf.h>
23#include <linux/tracehook.h>
24
25#include <asm/pgtable.h>
26#include <asm/uaccess.h>
27#include <asm/cacheflush.h>
28
29/* #define ALLOW_INIT_TRACING */
30
31/*
32 * Called by kernel/ptrace.c when detaching..
33 *
34 * Make sure single step bits etc are not set.
35 */
36void ptrace_disable(struct task_struct *child)
37{
38 /* nothing to do */
39}
40
41enum sparc_regset {
42 REGSET_GENERAL,
43 REGSET_FP,
44};
45
46static int genregs32_get(struct task_struct *target,
47 const struct user_regset *regset,
48 unsigned int pos, unsigned int count,
49 void *kbuf, void __user *ubuf)
50{
51 const struct pt_regs *regs = target->thread.kregs;
52 unsigned long __user *reg_window;
53 unsigned long *k = kbuf;
54 unsigned long __user *u = ubuf;
55 unsigned long reg;
56
57 if (target == current)
58 flush_user_windows();
59
60 pos /= sizeof(reg);
61 count /= sizeof(reg);
62
63 if (kbuf) {
64 for (; count > 0 && pos < 16; count--)
65 *k++ = regs->u_regs[pos++];
66
67 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
68 reg_window -= 16;
69 for (; count > 0 && pos < 32; count--) {
70 if (get_user(*k++, ®_window[pos++]))
71 return -EFAULT;
72 }
73 } else {
74 for (; count > 0 && pos < 16; count--) {
75 if (put_user(regs->u_regs[pos++], u++))
76 return -EFAULT;
77 }
78
79 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
80 reg_window -= 16;
81 for (; count > 0 && pos < 32; count--) {
82 if (get_user(reg, ®_window[pos++]) ||
83 put_user(reg, u++))
84 return -EFAULT;
85 }
86 }
87 while (count > 0) {
88 switch (pos) {
89 case 32: /* PSR */
90 reg = regs->psr;
91 break;
92 case 33: /* PC */
93 reg = regs->pc;
94 break;
95 case 34: /* NPC */
96 reg = regs->npc;
97 break;
98 case 35: /* Y */
99 reg = regs->y;
100 break;
101 case 36: /* WIM */
102 case 37: /* TBR */
103 reg = 0;
104 break;
105 default:
106 goto finish;
107 }
108
109 if (kbuf)
110 *k++ = reg;
111 else if (put_user(reg, u++))
112 return -EFAULT;
113 pos++;
114 count--;
115 }
116finish:
117 pos *= sizeof(reg);
118 count *= sizeof(reg);
119
120 return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
121 38 * sizeof(reg), -1);
122}
123
124static int genregs32_set(struct task_struct *target,
125 const struct user_regset *regset,
126 unsigned int pos, unsigned int count,
127 const void *kbuf, const void __user *ubuf)
128{
129 struct pt_regs *regs = target->thread.kregs;
130 unsigned long __user *reg_window;
131 const unsigned long *k = kbuf;
132 const unsigned long __user *u = ubuf;
133 unsigned long reg;
134
135 if (target == current)
136 flush_user_windows();
137
138 pos /= sizeof(reg);
139 count /= sizeof(reg);
140
141 if (kbuf) {
142 for (; count > 0 && pos < 16; count--)
143 regs->u_regs[pos++] = *k++;
144
145 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
146 reg_window -= 16;
147 for (; count > 0 && pos < 32; count--) {
148 if (put_user(*k++, ®_window[pos++]))
149 return -EFAULT;
150 }
151 } else {
152 for (; count > 0 && pos < 16; count--) {
153 if (get_user(reg, u++))
154 return -EFAULT;
155 regs->u_regs[pos++] = reg;
156 }
157
158 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
159 reg_window -= 16;
160 for (; count > 0 && pos < 32; count--) {
161 if (get_user(reg, u++) ||
162 put_user(reg, ®_window[pos++]))
163 return -EFAULT;
164 }
165 }
166 while (count > 0) {
167 unsigned long psr;
168
169 if (kbuf)
170 reg = *k++;
171 else if (get_user(reg, u++))
172 return -EFAULT;
173
174 switch (pos) {
175 case 32: /* PSR */
176 psr = regs->psr;
177 psr &= ~(PSR_ICC | PSR_SYSCALL);
178 psr |= (reg & (PSR_ICC | PSR_SYSCALL));
179 regs->psr = psr;
180 break;
181 case 33: /* PC */
182 regs->pc = reg;
183 break;
184 case 34: /* NPC */
185 regs->npc = reg;
186 break;
187 case 35: /* Y */
188 regs->y = reg;
189 break;
190 case 36: /* WIM */
191 case 37: /* TBR */
192 break;
193 default:
194 goto finish;
195 }
196
197 pos++;
198 count--;
199 }
200finish:
201 pos *= sizeof(reg);
202 count *= sizeof(reg);
203
204 return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
205 38 * sizeof(reg), -1);
206}
207
208static int fpregs32_get(struct task_struct *target,
209 const struct user_regset *regset,
210 unsigned int pos, unsigned int count,
211 void *kbuf, void __user *ubuf)
212{
213 const unsigned long *fpregs = target->thread.float_regs;
214 int ret = 0;
215
216#if 0
217 if (target == current)
218 save_and_clear_fpu();
219#endif
220
221 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
222 fpregs,
223 0, 32 * sizeof(u32));
224
225 if (!ret)
226 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
227 32 * sizeof(u32),
228 33 * sizeof(u32));
229 if (!ret)
230 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
231 &target->thread.fsr,
232 33 * sizeof(u32),
233 34 * sizeof(u32));
234
235 if (!ret) {
236 unsigned long val;
237
238 val = (1 << 8) | (8 << 16);
239 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
240 &val,
241 34 * sizeof(u32),
242 35 * sizeof(u32));
243 }
244
245 if (!ret)
246 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
247 35 * sizeof(u32), -1);
248
249 return ret;
250}
251
252static int fpregs32_set(struct task_struct *target,
253 const struct user_regset *regset,
254 unsigned int pos, unsigned int count,
255 const void *kbuf, const void __user *ubuf)
256{
257 unsigned long *fpregs = target->thread.float_regs;
258 int ret;
259
260#if 0
261 if (target == current)
262 save_and_clear_fpu();
263#endif
264 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
265 fpregs,
266 0, 32 * sizeof(u32));
267 if (!ret)
268 user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
269 32 * sizeof(u32),
270 33 * sizeof(u32));
271 if (!ret && count > 0) {
272 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
273 &target->thread.fsr,
274 33 * sizeof(u32),
275 34 * sizeof(u32));
276 }
277
278 if (!ret)
279 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
280 34 * sizeof(u32), -1);
281 return ret;
282}
283
284static const struct user_regset sparc32_regsets[] = {
285 /* Format is:
286 * G0 --> G7
287 * O0 --> O7
288 * L0 --> L7
289 * I0 --> I7
290 * PSR, PC, nPC, Y, WIM, TBR
291 */
292 [REGSET_GENERAL] = {
293 .core_note_type = NT_PRSTATUS,
294 .n = 38,
295 .size = sizeof(u32), .align = sizeof(u32),
296 .get = genregs32_get, .set = genregs32_set
297 },
298 /* Format is:
299 * F0 --> F31
300 * empty 32-bit word
301 * FSR (32--bit word)
302 * FPU QUEUE COUNT (8-bit char)
303 * FPU QUEUE ENTRYSIZE (8-bit char)
304 * FPU ENABLED (8-bit char)
305 * empty 8-bit char
306 * FPU QUEUE (64 32-bit ints)
307 */
308 [REGSET_FP] = {
309 .core_note_type = NT_PRFPREG,
310 .n = 99,
311 .size = sizeof(u32), .align = sizeof(u32),
312 .get = fpregs32_get, .set = fpregs32_set
313 },
314};
315
316static const struct user_regset_view user_sparc32_view = {
317 .name = "sparc", .e_machine = EM_SPARC,
318 .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
319};
320
321const struct user_regset_view *task_user_regset_view(struct task_struct *task)
322{
323 return &user_sparc32_view;
324}
325
326struct fps {
327 unsigned long regs[32];
328 unsigned long fsr;
329 unsigned long flags;
330 unsigned long extra;
331 unsigned long fpqd;
332 struct fq {
333 unsigned long *insnaddr;
334 unsigned long insn;
335 } fpq[16];
336};
337
338long arch_ptrace(struct task_struct *child, long request,
339 unsigned long addr, unsigned long data)
340{
341 unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
342 void __user *addr2p;
343 const struct user_regset_view *view;
344 struct pt_regs __user *pregs;
345 struct fps __user *fps;
346 int ret;
347
348 view = task_user_regset_view(current);
349 addr2p = (void __user *) addr2;
350 pregs = (struct pt_regs __user *) addr;
351 fps = (struct fps __user *) addr;
352
353 switch(request) {
354 case PTRACE_GETREGS: {
355 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
356 32 * sizeof(u32),
357 4 * sizeof(u32),
358 &pregs->psr);
359 if (!ret)
360 copy_regset_to_user(child, view, REGSET_GENERAL,
361 1 * sizeof(u32),
362 15 * sizeof(u32),
363 &pregs->u_regs[0]);
364 break;
365 }
366
367 case PTRACE_SETREGS: {
368 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
369 32 * sizeof(u32),
370 4 * sizeof(u32),
371 &pregs->psr);
372 if (!ret)
373 copy_regset_from_user(child, view, REGSET_GENERAL,
374 1 * sizeof(u32),
375 15 * sizeof(u32),
376 &pregs->u_regs[0]);
377 break;
378 }
379
380 case PTRACE_GETFPREGS: {
381 ret = copy_regset_to_user(child, view, REGSET_FP,
382 0 * sizeof(u32),
383 32 * sizeof(u32),
384 &fps->regs[0]);
385 if (!ret)
386 ret = copy_regset_to_user(child, view, REGSET_FP,
387 33 * sizeof(u32),
388 1 * sizeof(u32),
389 &fps->fsr);
390
391 if (!ret) {
392 if (__put_user(0, &fps->fpqd) ||
393 __put_user(0, &fps->flags) ||
394 __put_user(0, &fps->extra) ||
395 clear_user(fps->fpq, sizeof(fps->fpq)))
396 ret = -EFAULT;
397 }
398 break;
399 }
400
401 case PTRACE_SETFPREGS: {
402 ret = copy_regset_from_user(child, view, REGSET_FP,
403 0 * sizeof(u32),
404 32 * sizeof(u32),
405 &fps->regs[0]);
406 if (!ret)
407 ret = copy_regset_from_user(child, view, REGSET_FP,
408 33 * sizeof(u32),
409 1 * sizeof(u32),
410 &fps->fsr);
411 break;
412 }
413
414 case PTRACE_READTEXT:
415 case PTRACE_READDATA:
416 ret = ptrace_readdata(child, addr, addr2p, data);
417
418 if (ret == data)
419 ret = 0;
420 else if (ret >= 0)
421 ret = -EIO;
422 break;
423
424 case PTRACE_WRITETEXT:
425 case PTRACE_WRITEDATA:
426 ret = ptrace_writedata(child, addr2p, addr, data);
427
428 if (ret == data)
429 ret = 0;
430 else if (ret >= 0)
431 ret = -EIO;
432 break;
433
434 default:
435 if (request == PTRACE_SPARC_DETACH)
436 request = PTRACE_DETACH;
437 ret = ptrace_request(child, request, addr, data);
438 break;
439 }
440
441 return ret;
442}
443
444asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
445{
446 int ret = 0;
447
448 if (test_thread_flag(TIF_SYSCALL_TRACE)) {
449 if (syscall_exit_p)
450 tracehook_report_syscall_exit(regs, 0);
451 else
452 ret = tracehook_report_syscall_entry(regs);
453 }
454
455 return ret;
456}
1// SPDX-License-Identifier: GPL-2.0
2/* ptrace.c: Sparc process tracing support.
3 *
4 * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
5 *
6 * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
7 * and David Mosberger.
8 *
9 * Added Linux support -miguel (weird, eh?, the original code was meant
10 * to emulate SunOS).
11 */
12
13#include <linux/kernel.h>
14#include <linux/sched.h>
15#include <linux/mm.h>
16#include <linux/errno.h>
17#include <linux/ptrace.h>
18#include <linux/user.h>
19#include <linux/smp.h>
20#include <linux/security.h>
21#include <linux/signal.h>
22#include <linux/regset.h>
23#include <linux/elf.h>
24#include <linux/tracehook.h>
25
26#include <asm/pgtable.h>
27#include <linux/uaccess.h>
28#include <asm/cacheflush.h>
29
30#include "kernel.h"
31
32/* #define ALLOW_INIT_TRACING */
33
34/*
35 * Called by kernel/ptrace.c when detaching..
36 *
37 * Make sure single step bits etc are not set.
38 */
39void ptrace_disable(struct task_struct *child)
40{
41 /* nothing to do */
42}
43
44enum sparc_regset {
45 REGSET_GENERAL,
46 REGSET_FP,
47};
48
49static int genregs32_get(struct task_struct *target,
50 const struct user_regset *regset,
51 unsigned int pos, unsigned int count,
52 void *kbuf, void __user *ubuf)
53{
54 const struct pt_regs *regs = target->thread.kregs;
55 unsigned long __user *reg_window;
56 unsigned long *k = kbuf;
57 unsigned long __user *u = ubuf;
58 unsigned long reg;
59
60 if (target == current)
61 flush_user_windows();
62
63 pos /= sizeof(reg);
64 count /= sizeof(reg);
65
66 if (kbuf) {
67 for (; count > 0 && pos < 16; count--)
68 *k++ = regs->u_regs[pos++];
69
70 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
71 reg_window -= 16;
72 for (; count > 0 && pos < 32; count--) {
73 if (get_user(*k++, ®_window[pos++]))
74 return -EFAULT;
75 }
76 } else {
77 for (; count > 0 && pos < 16; count--) {
78 if (put_user(regs->u_regs[pos++], u++))
79 return -EFAULT;
80 }
81
82 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
83 reg_window -= 16;
84 for (; count > 0 && pos < 32; count--) {
85 if (get_user(reg, ®_window[pos++]) ||
86 put_user(reg, u++))
87 return -EFAULT;
88 }
89 }
90 while (count > 0) {
91 switch (pos) {
92 case 32: /* PSR */
93 reg = regs->psr;
94 break;
95 case 33: /* PC */
96 reg = regs->pc;
97 break;
98 case 34: /* NPC */
99 reg = regs->npc;
100 break;
101 case 35: /* Y */
102 reg = regs->y;
103 break;
104 case 36: /* WIM */
105 case 37: /* TBR */
106 reg = 0;
107 break;
108 default:
109 goto finish;
110 }
111
112 if (kbuf)
113 *k++ = reg;
114 else if (put_user(reg, u++))
115 return -EFAULT;
116 pos++;
117 count--;
118 }
119finish:
120 pos *= sizeof(reg);
121 count *= sizeof(reg);
122
123 return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
124 38 * sizeof(reg), -1);
125}
126
127static int genregs32_set(struct task_struct *target,
128 const struct user_regset *regset,
129 unsigned int pos, unsigned int count,
130 const void *kbuf, const void __user *ubuf)
131{
132 struct pt_regs *regs = target->thread.kregs;
133 unsigned long __user *reg_window;
134 const unsigned long *k = kbuf;
135 const unsigned long __user *u = ubuf;
136 unsigned long reg;
137
138 if (target == current)
139 flush_user_windows();
140
141 pos /= sizeof(reg);
142 count /= sizeof(reg);
143
144 if (kbuf) {
145 for (; count > 0 && pos < 16; count--)
146 regs->u_regs[pos++] = *k++;
147
148 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
149 reg_window -= 16;
150 for (; count > 0 && pos < 32; count--) {
151 if (put_user(*k++, ®_window[pos++]))
152 return -EFAULT;
153 }
154 } else {
155 for (; count > 0 && pos < 16; count--) {
156 if (get_user(reg, u++))
157 return -EFAULT;
158 regs->u_regs[pos++] = reg;
159 }
160
161 reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
162 reg_window -= 16;
163 for (; count > 0 && pos < 32; count--) {
164 if (get_user(reg, u++) ||
165 put_user(reg, ®_window[pos++]))
166 return -EFAULT;
167 }
168 }
169 while (count > 0) {
170 unsigned long psr;
171
172 if (kbuf)
173 reg = *k++;
174 else if (get_user(reg, u++))
175 return -EFAULT;
176
177 switch (pos) {
178 case 32: /* PSR */
179 psr = regs->psr;
180 psr &= ~(PSR_ICC | PSR_SYSCALL);
181 psr |= (reg & (PSR_ICC | PSR_SYSCALL));
182 regs->psr = psr;
183 break;
184 case 33: /* PC */
185 regs->pc = reg;
186 break;
187 case 34: /* NPC */
188 regs->npc = reg;
189 break;
190 case 35: /* Y */
191 regs->y = reg;
192 break;
193 case 36: /* WIM */
194 case 37: /* TBR */
195 break;
196 default:
197 goto finish;
198 }
199
200 pos++;
201 count--;
202 }
203finish:
204 pos *= sizeof(reg);
205 count *= sizeof(reg);
206
207 return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
208 38 * sizeof(reg), -1);
209}
210
211static int fpregs32_get(struct task_struct *target,
212 const struct user_regset *regset,
213 unsigned int pos, unsigned int count,
214 void *kbuf, void __user *ubuf)
215{
216 const unsigned long *fpregs = target->thread.float_regs;
217 int ret = 0;
218
219#if 0
220 if (target == current)
221 save_and_clear_fpu();
222#endif
223
224 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
225 fpregs,
226 0, 32 * sizeof(u32));
227
228 if (!ret)
229 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
230 32 * sizeof(u32),
231 33 * sizeof(u32));
232 if (!ret)
233 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
234 &target->thread.fsr,
235 33 * sizeof(u32),
236 34 * sizeof(u32));
237
238 if (!ret) {
239 unsigned long val;
240
241 val = (1 << 8) | (8 << 16);
242 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
243 &val,
244 34 * sizeof(u32),
245 35 * sizeof(u32));
246 }
247
248 if (!ret)
249 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
250 35 * sizeof(u32), -1);
251
252 return ret;
253}
254
255static int fpregs32_set(struct task_struct *target,
256 const struct user_regset *regset,
257 unsigned int pos, unsigned int count,
258 const void *kbuf, const void __user *ubuf)
259{
260 unsigned long *fpregs = target->thread.float_regs;
261 int ret;
262
263#if 0
264 if (target == current)
265 save_and_clear_fpu();
266#endif
267 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
268 fpregs,
269 0, 32 * sizeof(u32));
270 if (!ret)
271 user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
272 32 * sizeof(u32),
273 33 * sizeof(u32));
274 if (!ret && count > 0) {
275 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
276 &target->thread.fsr,
277 33 * sizeof(u32),
278 34 * sizeof(u32));
279 }
280
281 if (!ret)
282 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
283 34 * sizeof(u32), -1);
284 return ret;
285}
286
287static const struct user_regset sparc32_regsets[] = {
288 /* Format is:
289 * G0 --> G7
290 * O0 --> O7
291 * L0 --> L7
292 * I0 --> I7
293 * PSR, PC, nPC, Y, WIM, TBR
294 */
295 [REGSET_GENERAL] = {
296 .core_note_type = NT_PRSTATUS,
297 .n = 38,
298 .size = sizeof(u32), .align = sizeof(u32),
299 .get = genregs32_get, .set = genregs32_set
300 },
301 /* Format is:
302 * F0 --> F31
303 * empty 32-bit word
304 * FSR (32--bit word)
305 * FPU QUEUE COUNT (8-bit char)
306 * FPU QUEUE ENTRYSIZE (8-bit char)
307 * FPU ENABLED (8-bit char)
308 * empty 8-bit char
309 * FPU QUEUE (64 32-bit ints)
310 */
311 [REGSET_FP] = {
312 .core_note_type = NT_PRFPREG,
313 .n = 99,
314 .size = sizeof(u32), .align = sizeof(u32),
315 .get = fpregs32_get, .set = fpregs32_set
316 },
317};
318
319static const struct user_regset_view user_sparc32_view = {
320 .name = "sparc", .e_machine = EM_SPARC,
321 .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
322};
323
324const struct user_regset_view *task_user_regset_view(struct task_struct *task)
325{
326 return &user_sparc32_view;
327}
328
329struct fps {
330 unsigned long regs[32];
331 unsigned long fsr;
332 unsigned long flags;
333 unsigned long extra;
334 unsigned long fpqd;
335 struct fq {
336 unsigned long *insnaddr;
337 unsigned long insn;
338 } fpq[16];
339};
340
341long arch_ptrace(struct task_struct *child, long request,
342 unsigned long addr, unsigned long data)
343{
344 unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
345 void __user *addr2p;
346 const struct user_regset_view *view;
347 struct pt_regs __user *pregs;
348 struct fps __user *fps;
349 int ret;
350
351 view = task_user_regset_view(current);
352 addr2p = (void __user *) addr2;
353 pregs = (struct pt_regs __user *) addr;
354 fps = (struct fps __user *) addr;
355
356 switch(request) {
357 case PTRACE_GETREGS: {
358 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
359 32 * sizeof(u32),
360 4 * sizeof(u32),
361 &pregs->psr);
362 if (!ret)
363 copy_regset_to_user(child, view, REGSET_GENERAL,
364 1 * sizeof(u32),
365 15 * sizeof(u32),
366 &pregs->u_regs[0]);
367 break;
368 }
369
370 case PTRACE_SETREGS: {
371 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
372 32 * sizeof(u32),
373 4 * sizeof(u32),
374 &pregs->psr);
375 if (!ret)
376 copy_regset_from_user(child, view, REGSET_GENERAL,
377 1 * sizeof(u32),
378 15 * sizeof(u32),
379 &pregs->u_regs[0]);
380 break;
381 }
382
383 case PTRACE_GETFPREGS: {
384 ret = copy_regset_to_user(child, view, REGSET_FP,
385 0 * sizeof(u32),
386 32 * sizeof(u32),
387 &fps->regs[0]);
388 if (!ret)
389 ret = copy_regset_to_user(child, view, REGSET_FP,
390 33 * sizeof(u32),
391 1 * sizeof(u32),
392 &fps->fsr);
393
394 if (!ret) {
395 if (__put_user(0, &fps->fpqd) ||
396 __put_user(0, &fps->flags) ||
397 __put_user(0, &fps->extra) ||
398 clear_user(fps->fpq, sizeof(fps->fpq)))
399 ret = -EFAULT;
400 }
401 break;
402 }
403
404 case PTRACE_SETFPREGS: {
405 ret = copy_regset_from_user(child, view, REGSET_FP,
406 0 * sizeof(u32),
407 32 * sizeof(u32),
408 &fps->regs[0]);
409 if (!ret)
410 ret = copy_regset_from_user(child, view, REGSET_FP,
411 33 * sizeof(u32),
412 1 * sizeof(u32),
413 &fps->fsr);
414 break;
415 }
416
417 case PTRACE_READTEXT:
418 case PTRACE_READDATA:
419 ret = ptrace_readdata(child, addr, addr2p, data);
420
421 if (ret == data)
422 ret = 0;
423 else if (ret >= 0)
424 ret = -EIO;
425 break;
426
427 case PTRACE_WRITETEXT:
428 case PTRACE_WRITEDATA:
429 ret = ptrace_writedata(child, addr2p, addr, data);
430
431 if (ret == data)
432 ret = 0;
433 else if (ret >= 0)
434 ret = -EIO;
435 break;
436
437 default:
438 if (request == PTRACE_SPARC_DETACH)
439 request = PTRACE_DETACH;
440 ret = ptrace_request(child, request, addr, data);
441 break;
442 }
443
444 return ret;
445}
446
447asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
448{
449 int ret = 0;
450
451 if (test_thread_flag(TIF_SYSCALL_TRACE)) {
452 if (syscall_exit_p)
453 tracehook_report_syscall_exit(regs, 0);
454 else
455 ret = tracehook_report_syscall_entry(regs);
456 }
457
458 return ret;
459}