Commit | Line | Data |
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611cb4a5 | 1 | /* Memory breakpoint operations for the remote server for GDB. |
4c38e0a4 | 2 | Copyright (C) 2002, 2003, 2005, 2007, 2008, 2009, 2010 |
0fb0cc75 | 3 | Free Software Foundation, Inc. |
611cb4a5 DJ |
4 | |
5 | Contributed by MontaVista Software. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
611cb4a5 DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
611cb4a5 DJ |
21 | |
22 | #include "server.h" | |
23 | ||
f450004a | 24 | const unsigned char *breakpoint_data; |
611cb4a5 DJ |
25 | int breakpoint_len; |
26 | ||
27 | #define MAX_BREAKPOINT_LEN 8 | |
28 | ||
8b07ae33 PA |
29 | /* GDB will never try to install multiple breakpoints at the same |
30 | address. But, we need to keep track of internal breakpoints too, | |
31 | and so we do need to be able to install multiple breakpoints at the | |
32 | same address transparently. We keep track of two different, and | |
33 | closely related structures. A raw breakpoint, which manages the | |
34 | low level, close to the metal aspect of a breakpoint. It holds the | |
35 | breakpoint address, and a buffer holding a copy of the instructions | |
36 | that would be in memory had not been a breakpoint there (we call | |
37 | that the shadow memory of the breakpoint). We occasionally need to | |
38 | temporarilly uninsert a breakpoint without the client knowing about | |
39 | it (e.g., to step over an internal breakpoint), so we keep an | |
40 | `inserted' state associated with this low level breakpoint | |
41 | structure. There can only be one such object for a given address. | |
42 | Then, we have (a bit higher level) breakpoints. This structure | |
43 | holds a callback to be called whenever a breakpoint is hit, a | |
44 | high-level type, and a link to a low level raw breakpoint. There | |
45 | can be many high-level breakpoints at the same address, and all of | |
46 | them will point to the same raw breakpoint, which is reference | |
47 | counted. */ | |
48 | ||
49 | /* The low level, physical, raw breakpoint. */ | |
50 | struct raw_breakpoint | |
51 | { | |
52 | struct raw_breakpoint *next; | |
53 | ||
54 | /* A reference count. Each high level breakpoint referencing this | |
55 | raw breakpoint accounts for one reference. */ | |
56 | int refcount; | |
57 | ||
58 | /* The breakpoint's insertion address. There can only be one raw | |
59 | breakpoint for a given PC. */ | |
60 | CORE_ADDR pc; | |
61 | ||
62 | /* The breakpoint's shadow memory. */ | |
63 | unsigned char old_data[MAX_BREAKPOINT_LEN]; | |
64 | ||
65 | /* Non-zero if this breakpoint is currently inserted in the | |
66 | inferior. */ | |
67 | int inserted; | |
68 | }; | |
69 | ||
414a389f PA |
70 | /* The type of a breakpoint. */ |
71 | enum bkpt_type | |
72 | { | |
8b07ae33 PA |
73 | /* A GDB breakpoint, requested with a Z0 packet. */ |
74 | gdb_breakpoint, | |
75 | ||
414a389f PA |
76 | /* A basic-software-single-step breakpoint. */ |
77 | reinsert_breakpoint, | |
78 | ||
79 | /* Any other breakpoint type that doesn't require specific | |
80 | treatment goes here. E.g., an event breakpoint. */ | |
81 | other_breakpoint, | |
82 | }; | |
83 | ||
8b07ae33 | 84 | /* A high level (in gdbserver's perspective) breakpoint. */ |
611cb4a5 DJ |
85 | struct breakpoint |
86 | { | |
87 | struct breakpoint *next; | |
611cb4a5 | 88 | |
414a389f PA |
89 | /* The breakpoint's type. */ |
90 | enum bkpt_type type; | |
91 | ||
8b07ae33 PA |
92 | /* Link to this breakpoint's raw breakpoint. This is always |
93 | non-NULL. */ | |
94 | struct raw_breakpoint *raw; | |
95 | ||
b65d95c5 | 96 | /* Function to call when we hit this breakpoint. If it returns 1, |
8b07ae33 PA |
97 | the breakpoint shall be deleted; 0 or if this callback is NULL, |
98 | it will be left inserted. */ | |
b65d95c5 | 99 | int (*handler) (CORE_ADDR); |
611cb4a5 DJ |
100 | }; |
101 | ||
8b07ae33 PA |
102 | static struct raw_breakpoint * |
103 | find_raw_breakpoint_at (CORE_ADDR where) | |
104 | { | |
105 | struct process_info *proc = current_process (); | |
106 | struct raw_breakpoint *bp; | |
414a389f | 107 | |
8b07ae33 PA |
108 | for (bp = proc->raw_breakpoints; bp != NULL; bp = bp->next) |
109 | if (bp->pc == where) | |
110 | return bp; | |
111 | ||
112 | return NULL; | |
113 | } | |
114 | ||
115 | static struct raw_breakpoint * | |
d50171e4 | 116 | set_raw_breakpoint_at (CORE_ADDR where) |
611cb4a5 | 117 | { |
95954743 | 118 | struct process_info *proc = current_process (); |
8b07ae33 | 119 | struct raw_breakpoint *bp; |
d50171e4 | 120 | int err; |
611cb4a5 DJ |
121 | |
122 | if (breakpoint_data == NULL) | |
123 | error ("Target does not support breakpoints."); | |
124 | ||
8b07ae33 PA |
125 | bp = find_raw_breakpoint_at (where); |
126 | if (bp != NULL) | |
127 | { | |
128 | bp->refcount++; | |
129 | return bp; | |
130 | } | |
131 | ||
d50171e4 PA |
132 | bp = xcalloc (1, sizeof (*bp)); |
133 | bp->pc = where; | |
8b07ae33 | 134 | bp->refcount = 1; |
611cb4a5 | 135 | |
d50171e4 PA |
136 | err = (*the_target->read_memory) (where, bp->old_data, |
137 | breakpoint_len); | |
138 | if (err != 0) | |
139 | { | |
140 | if (debug_threads) | |
141 | fprintf (stderr, | |
142 | "Failed to read shadow memory of" | |
143 | " breakpoint at 0x%s (%s).\n", | |
144 | paddress (where), strerror (err)); | |
145 | free (bp); | |
146 | return NULL; | |
147 | } | |
611cb4a5 | 148 | |
d50171e4 PA |
149 | err = (*the_target->write_memory) (where, breakpoint_data, |
150 | breakpoint_len); | |
151 | if (err != 0) | |
152 | { | |
153 | if (debug_threads) | |
154 | fprintf (stderr, | |
155 | "Failed to insert breakpoint at 0x%s (%s).\n", | |
156 | paddress (where), strerror (err)); | |
157 | free (bp); | |
158 | return NULL; | |
159 | } | |
160 | ||
161 | /* Link the breakpoint in. */ | |
162 | bp->inserted = 1; | |
8b07ae33 PA |
163 | bp->next = proc->raw_breakpoints; |
164 | proc->raw_breakpoints = bp; | |
d50171e4 PA |
165 | return bp; |
166 | } | |
167 | ||
414a389f | 168 | struct breakpoint * |
d50171e4 PA |
169 | set_breakpoint_at (CORE_ADDR where, int (*handler) (CORE_ADDR)) |
170 | { | |
171 | struct process_info *proc = current_process (); | |
172 | struct breakpoint *bp; | |
8b07ae33 | 173 | struct raw_breakpoint *raw; |
d50171e4 | 174 | |
8b07ae33 | 175 | raw = set_raw_breakpoint_at (where); |
d50171e4 | 176 | |
8b07ae33 | 177 | if (raw == NULL) |
d50171e4 PA |
178 | { |
179 | /* warn? */ | |
414a389f | 180 | return NULL; |
d50171e4 PA |
181 | } |
182 | ||
183 | bp = xcalloc (1, sizeof (struct breakpoint)); | |
414a389f | 184 | bp->type = other_breakpoint; |
8b07ae33 PA |
185 | |
186 | bp->raw = raw; | |
611cb4a5 DJ |
187 | bp->handler = handler; |
188 | ||
95954743 PA |
189 | bp->next = proc->breakpoints; |
190 | proc->breakpoints = bp; | |
414a389f PA |
191 | |
192 | return bp; | |
611cb4a5 DJ |
193 | } |
194 | ||
8b07ae33 PA |
195 | static int |
196 | delete_raw_breakpoint (struct process_info *proc, struct raw_breakpoint *todel) | |
197 | { | |
198 | struct raw_breakpoint *bp, **bp_link; | |
199 | int ret; | |
200 | ||
201 | bp = proc->raw_breakpoints; | |
202 | bp_link = &proc->raw_breakpoints; | |
203 | ||
204 | while (bp) | |
205 | { | |
206 | if (bp == todel) | |
207 | { | |
208 | if (bp->inserted) | |
209 | { | |
210 | struct raw_breakpoint *prev_bp_link = *bp_link; | |
211 | ||
212 | *bp_link = bp->next; | |
213 | ||
214 | ret = (*the_target->write_memory) (bp->pc, bp->old_data, | |
215 | breakpoint_len); | |
216 | if (ret != 0) | |
217 | { | |
218 | /* Something went wrong, relink the breakpoint. */ | |
219 | *bp_link = prev_bp_link; | |
220 | ||
221 | if (debug_threads) | |
222 | fprintf (stderr, | |
223 | "Failed to uninsert raw breakpoint " | |
224 | "at 0x%s (%s) while deleting it.\n", | |
225 | paddress (bp->pc), strerror (ret)); | |
226 | return ret; | |
227 | } | |
228 | ||
229 | } | |
230 | else | |
231 | *bp_link = bp->next; | |
232 | ||
233 | free (bp); | |
234 | return 0; | |
235 | } | |
236 | else | |
237 | { | |
238 | bp_link = &bp->next; | |
239 | bp = *bp_link; | |
240 | } | |
241 | } | |
242 | ||
243 | warning ("Could not find raw breakpoint in list."); | |
244 | return ENOENT; | |
245 | } | |
246 | ||
247 | static int | |
248 | release_breakpoint (struct process_info *proc, struct breakpoint *bp) | |
249 | { | |
250 | int newrefcount; | |
251 | int ret; | |
252 | ||
253 | newrefcount = bp->raw->refcount - 1; | |
254 | if (newrefcount == 0) | |
255 | { | |
256 | ret = delete_raw_breakpoint (proc, bp->raw); | |
257 | if (ret != 0) | |
258 | return ret; | |
259 | } | |
260 | else | |
261 | bp->raw->refcount = newrefcount; | |
262 | ||
263 | free (bp); | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | static int | |
269 | delete_breakpoint_1 (struct process_info *proc, struct breakpoint *todel) | |
611cb4a5 | 270 | { |
414a389f | 271 | struct breakpoint *bp, **bp_link; |
8b07ae33 | 272 | int err; |
611cb4a5 | 273 | |
414a389f PA |
274 | bp = proc->breakpoints; |
275 | bp_link = &proc->breakpoints; | |
276 | ||
277 | while (bp) | |
611cb4a5 | 278 | { |
414a389f | 279 | if (bp == todel) |
611cb4a5 | 280 | { |
414a389f PA |
281 | *bp_link = bp->next; |
282 | ||
8b07ae33 PA |
283 | err = release_breakpoint (proc, bp); |
284 | if (err != 0) | |
285 | return err; | |
286 | ||
287 | bp = *bp_link; | |
288 | return 0; | |
611cb4a5 | 289 | } |
414a389f PA |
290 | else |
291 | { | |
292 | bp_link = &bp->next; | |
293 | bp = *bp_link; | |
294 | } | |
611cb4a5 | 295 | } |
414a389f | 296 | |
611cb4a5 | 297 | warning ("Could not find breakpoint in list."); |
8b07ae33 PA |
298 | return ENOENT; |
299 | } | |
300 | ||
301 | static int | |
302 | delete_breakpoint (struct breakpoint *todel) | |
303 | { | |
304 | struct process_info *proc = current_process (); | |
305 | return delete_breakpoint_1 (proc, todel); | |
611cb4a5 DJ |
306 | } |
307 | ||
308 | static struct breakpoint * | |
8b07ae33 | 309 | find_gdb_breakpoint_at (CORE_ADDR where) |
611cb4a5 | 310 | { |
95954743 | 311 | struct process_info *proc = current_process (); |
8b07ae33 | 312 | struct breakpoint *bp; |
611cb4a5 | 313 | |
8b07ae33 PA |
314 | for (bp = proc->breakpoints; bp != NULL; bp = bp->next) |
315 | if (bp->type == gdb_breakpoint && bp->raw->pc == where) | |
316 | return bp; | |
611cb4a5 DJ |
317 | |
318 | return NULL; | |
319 | } | |
320 | ||
8b07ae33 PA |
321 | int |
322 | set_gdb_breakpoint_at (CORE_ADDR where) | |
68070c10 | 323 | { |
8b07ae33 PA |
324 | struct breakpoint *bp; |
325 | ||
326 | if (breakpoint_data == NULL) | |
327 | return 1; | |
328 | ||
329 | bp = set_breakpoint_at (where, NULL); | |
330 | if (bp == NULL) | |
331 | return -1; | |
332 | ||
333 | bp->type = gdb_breakpoint; | |
334 | return 0; | |
335 | } | |
336 | ||
337 | int | |
338 | delete_gdb_breakpoint_at (CORE_ADDR addr) | |
339 | { | |
340 | struct breakpoint *bp; | |
341 | int err; | |
342 | ||
343 | if (breakpoint_data == NULL) | |
344 | return 1; | |
345 | ||
346 | bp = find_gdb_breakpoint_at (addr); | |
347 | if (bp == NULL) | |
348 | return -1; | |
349 | ||
350 | err = delete_breakpoint (bp); | |
351 | if (err) | |
352 | return -1; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | int | |
358 | gdb_breakpoint_here (CORE_ADDR where) | |
359 | { | |
360 | struct breakpoint *bp = find_gdb_breakpoint_at (where); | |
361 | ||
362 | return (bp != NULL); | |
68070c10 PA |
363 | } |
364 | ||
d50171e4 PA |
365 | void |
366 | set_reinsert_breakpoint (CORE_ADDR stop_at) | |
611cb4a5 | 367 | { |
414a389f PA |
368 | struct breakpoint *bp; |
369 | ||
370 | bp = set_breakpoint_at (stop_at, NULL); | |
414a389f | 371 | bp->type = reinsert_breakpoint; |
611cb4a5 DJ |
372 | } |
373 | ||
374 | void | |
d50171e4 | 375 | delete_reinsert_breakpoints (void) |
611cb4a5 | 376 | { |
d50171e4 PA |
377 | struct process_info *proc = current_process (); |
378 | struct breakpoint *bp, **bp_link; | |
611cb4a5 | 379 | |
d50171e4 PA |
380 | bp = proc->breakpoints; |
381 | bp_link = &proc->breakpoints; | |
611cb4a5 | 382 | |
d50171e4 PA |
383 | while (bp) |
384 | { | |
414a389f PA |
385 | if (bp->type == reinsert_breakpoint) |
386 | { | |
387 | *bp_link = bp->next; | |
8b07ae33 | 388 | release_breakpoint (proc, bp); |
414a389f PA |
389 | bp = *bp_link; |
390 | } | |
391 | else | |
392 | { | |
393 | bp_link = &bp->next; | |
394 | bp = *bp_link; | |
395 | } | |
d50171e4 PA |
396 | } |
397 | } | |
b65d95c5 | 398 | |
d50171e4 | 399 | static void |
8b07ae33 | 400 | uninsert_raw_breakpoint (struct raw_breakpoint *bp) |
d50171e4 PA |
401 | { |
402 | if (bp->inserted) | |
403 | { | |
404 | int err; | |
405 | ||
406 | bp->inserted = 0; | |
407 | err = (*the_target->write_memory) (bp->pc, bp->old_data, | |
408 | breakpoint_len); | |
409 | if (err != 0) | |
410 | { | |
411 | bp->inserted = 1; | |
611cb4a5 | 412 | |
d50171e4 PA |
413 | if (debug_threads) |
414 | fprintf (stderr, | |
415 | "Failed to uninsert raw breakpoint at 0x%s (%s).\n", | |
416 | paddress (bp->pc), strerror (err)); | |
417 | } | |
418 | } | |
611cb4a5 DJ |
419 | } |
420 | ||
421 | void | |
d50171e4 | 422 | uninsert_breakpoints_at (CORE_ADDR pc) |
611cb4a5 | 423 | { |
8b07ae33 | 424 | struct raw_breakpoint *bp; |
611cb4a5 | 425 | |
8b07ae33 | 426 | bp = find_raw_breakpoint_at (pc); |
611cb4a5 | 427 | if (bp == NULL) |
d50171e4 PA |
428 | { |
429 | /* This can happen when we remove all breakpoints while handling | |
430 | a step-over. */ | |
431 | if (debug_threads) | |
432 | fprintf (stderr, | |
433 | "Could not find breakpoint at 0x%s " | |
434 | "in list (uninserting).\n", | |
435 | paddress (pc)); | |
436 | return; | |
437 | } | |
611cb4a5 | 438 | |
d50171e4 | 439 | if (bp->inserted) |
8b07ae33 | 440 | uninsert_raw_breakpoint (bp); |
611cb4a5 DJ |
441 | } |
442 | ||
d50171e4 | 443 | static void |
8b07ae33 | 444 | reinsert_raw_breakpoint (struct raw_breakpoint *bp) |
611cb4a5 | 445 | { |
d50171e4 | 446 | int err; |
611cb4a5 | 447 | |
d50171e4 | 448 | if (bp->inserted) |
611cb4a5 DJ |
449 | error ("Breakpoint already inserted at reinsert time."); |
450 | ||
d50171e4 PA |
451 | err = (*the_target->write_memory) (bp->pc, breakpoint_data, |
452 | breakpoint_len); | |
453 | if (err == 0) | |
454 | bp->inserted = 1; | |
455 | else if (debug_threads) | |
456 | fprintf (stderr, | |
457 | "Failed to reinsert breakpoint at 0x%s (%s).\n", | |
458 | paddress (bp->pc), strerror (err)); | |
611cb4a5 DJ |
459 | } |
460 | ||
d50171e4 PA |
461 | void |
462 | reinsert_breakpoints_at (CORE_ADDR pc) | |
611cb4a5 | 463 | { |
8b07ae33 | 464 | struct raw_breakpoint *bp; |
611cb4a5 | 465 | |
8b07ae33 | 466 | bp = find_raw_breakpoint_at (pc); |
611cb4a5 | 467 | if (bp == NULL) |
611cb4a5 | 468 | { |
d50171e4 PA |
469 | /* This can happen when we remove all breakpoints while handling |
470 | a step-over. */ | |
471 | if (debug_threads) | |
472 | fprintf (stderr, | |
8b07ae33 | 473 | "Could not find raw breakpoint at 0x%s " |
d50171e4 PA |
474 | "in list (reinserting).\n", |
475 | paddress (pc)); | |
476 | return; | |
611cb4a5 DJ |
477 | } |
478 | ||
414a389f | 479 | reinsert_raw_breakpoint (bp); |
d50171e4 PA |
480 | } |
481 | ||
482 | void | |
483 | check_breakpoints (CORE_ADDR stop_pc) | |
484 | { | |
485 | struct process_info *proc = current_process (); | |
486 | struct breakpoint *bp, **bp_link; | |
487 | ||
488 | bp = proc->breakpoints; | |
489 | bp_link = &proc->breakpoints; | |
490 | ||
491 | while (bp) | |
b65d95c5 | 492 | { |
8b07ae33 | 493 | if (bp->raw->pc == stop_pc) |
d50171e4 | 494 | { |
8b07ae33 | 495 | if (!bp->raw->inserted) |
d50171e4 PA |
496 | { |
497 | warning ("Hit a removed breakpoint?"); | |
498 | return; | |
499 | } | |
500 | ||
501 | if (bp->handler != NULL && (*bp->handler) (stop_pc)) | |
502 | { | |
503 | *bp_link = bp->next; | |
504 | ||
8b07ae33 | 505 | release_breakpoint (proc, bp); |
d50171e4 PA |
506 | |
507 | bp = *bp_link; | |
508 | continue; | |
509 | } | |
510 | } | |
511 | ||
512 | bp_link = &bp->next; | |
513 | bp = *bp_link; | |
b65d95c5 | 514 | } |
611cb4a5 DJ |
515 | } |
516 | ||
517 | void | |
f450004a | 518 | set_breakpoint_data (const unsigned char *bp_data, int bp_len) |
611cb4a5 DJ |
519 | { |
520 | breakpoint_data = bp_data; | |
521 | breakpoint_len = bp_len; | |
522 | } | |
523 | ||
d50171e4 PA |
524 | int |
525 | breakpoint_here (CORE_ADDR addr) | |
526 | { | |
8b07ae33 | 527 | return (find_raw_breakpoint_at (addr) != NULL); |
d50171e4 PA |
528 | } |
529 | ||
530 | int | |
531 | breakpoint_inserted_here (CORE_ADDR addr) | |
532 | { | |
8b07ae33 | 533 | struct raw_breakpoint *bp; |
d50171e4 | 534 | |
8b07ae33 | 535 | bp = find_raw_breakpoint_at (addr); |
d50171e4 | 536 | |
8b07ae33 | 537 | return (bp != NULL && bp->inserted); |
d50171e4 PA |
538 | } |
539 | ||
611cb4a5 | 540 | void |
f450004a | 541 | check_mem_read (CORE_ADDR mem_addr, unsigned char *buf, int mem_len) |
611cb4a5 | 542 | { |
95954743 | 543 | struct process_info *proc = current_process (); |
8b07ae33 | 544 | struct raw_breakpoint *bp = proc->raw_breakpoints; |
611cb4a5 DJ |
545 | CORE_ADDR mem_end = mem_addr + mem_len; |
546 | ||
547 | for (; bp != NULL; bp = bp->next) | |
548 | { | |
549 | CORE_ADDR bp_end = bp->pc + breakpoint_len; | |
550 | CORE_ADDR start, end; | |
551 | int copy_offset, copy_len, buf_offset; | |
552 | ||
553 | if (mem_addr >= bp_end) | |
554 | continue; | |
555 | if (bp->pc >= mem_end) | |
556 | continue; | |
557 | ||
558 | start = bp->pc; | |
559 | if (mem_addr > start) | |
560 | start = mem_addr; | |
561 | ||
562 | end = bp_end; | |
563 | if (end > mem_end) | |
564 | end = mem_end; | |
565 | ||
566 | copy_len = end - start; | |
567 | copy_offset = start - bp->pc; | |
568 | buf_offset = start - mem_addr; | |
569 | ||
8b07ae33 PA |
570 | if (bp->inserted) |
571 | memcpy (buf + buf_offset, bp->old_data + copy_offset, copy_len); | |
611cb4a5 DJ |
572 | } |
573 | } | |
574 | ||
575 | void | |
f450004a | 576 | check_mem_write (CORE_ADDR mem_addr, unsigned char *buf, int mem_len) |
611cb4a5 | 577 | { |
95954743 | 578 | struct process_info *proc = current_process (); |
8b07ae33 | 579 | struct raw_breakpoint *bp = proc->raw_breakpoints; |
611cb4a5 DJ |
580 | CORE_ADDR mem_end = mem_addr + mem_len; |
581 | ||
582 | for (; bp != NULL; bp = bp->next) | |
583 | { | |
584 | CORE_ADDR bp_end = bp->pc + breakpoint_len; | |
585 | CORE_ADDR start, end; | |
586 | int copy_offset, copy_len, buf_offset; | |
587 | ||
588 | if (mem_addr >= bp_end) | |
589 | continue; | |
590 | if (bp->pc >= mem_end) | |
591 | continue; | |
592 | ||
593 | start = bp->pc; | |
594 | if (mem_addr > start) | |
595 | start = mem_addr; | |
596 | ||
597 | end = bp_end; | |
598 | if (end > mem_end) | |
599 | end = mem_end; | |
600 | ||
601 | copy_len = end - start; | |
602 | copy_offset = start - bp->pc; | |
603 | buf_offset = start - mem_addr; | |
604 | ||
605 | memcpy (bp->old_data + copy_offset, buf + buf_offset, copy_len); | |
d50171e4 | 606 | if (bp->inserted) |
611cb4a5 DJ |
607 | memcpy (buf + buf_offset, breakpoint_data + copy_offset, copy_len); |
608 | } | |
609 | } | |
ae13219e | 610 | |
95954743 | 611 | /* Delete all breakpoints, and un-insert them from the inferior. */ |
ae13219e DJ |
612 | |
613 | void | |
614 | delete_all_breakpoints (void) | |
615 | { | |
95954743 PA |
616 | struct process_info *proc = current_process (); |
617 | ||
618 | while (proc->breakpoints) | |
8b07ae33 | 619 | delete_breakpoint_1 (proc, proc->breakpoints); |
95954743 PA |
620 | } |
621 | ||
622 | /* Release all breakpoints, but do not try to un-insert them from the | |
623 | inferior. */ | |
624 | ||
625 | void | |
626 | free_all_breakpoints (struct process_info *proc) | |
627 | { | |
8b07ae33 | 628 | struct raw_breakpoint *raw_bp; |
95954743 | 629 | |
8b07ae33 PA |
630 | for (raw_bp = proc->raw_breakpoints; raw_bp != NULL; raw_bp = raw_bp->next) |
631 | raw_bp->inserted = 0; | |
632 | ||
633 | /* Note: use PROC explicitly instead of deferring to | |
634 | delete_all_breakpoints --- CURRENT_INFERIOR may already have been | |
635 | released when we get here. There should be no call to | |
636 | current_process from here on. */ | |
95954743 | 637 | while (proc->breakpoints) |
8b07ae33 | 638 | delete_breakpoint_1 (proc, proc->breakpoints); |
ae13219e | 639 | } |