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611cb4a5 | 1 | /* Memory breakpoint operations for the remote server for GDB. |
0b302171 JB |
2 | Copyright (C) 2002-2003, 2005, 2007-2012 Free Software Foundation, |
3 | 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; | |
d3bbe7a0 PA |
68 | |
69 | /* Non-zero if this breakpoint is currently disabled because we no | |
70 | longer detect it as inserted. */ | |
71 | int shlib_disabled; | |
8b07ae33 PA |
72 | }; |
73 | ||
414a389f PA |
74 | /* The type of a breakpoint. */ |
75 | enum bkpt_type | |
76 | { | |
8b07ae33 PA |
77 | /* A GDB breakpoint, requested with a Z0 packet. */ |
78 | gdb_breakpoint, | |
79 | ||
414a389f PA |
80 | /* A basic-software-single-step breakpoint. */ |
81 | reinsert_breakpoint, | |
82 | ||
83 | /* Any other breakpoint type that doesn't require specific | |
84 | treatment goes here. E.g., an event breakpoint. */ | |
85 | other_breakpoint, | |
86 | }; | |
87 | ||
8b07ae33 | 88 | /* A high level (in gdbserver's perspective) breakpoint. */ |
611cb4a5 DJ |
89 | struct breakpoint |
90 | { | |
91 | struct breakpoint *next; | |
611cb4a5 | 92 | |
414a389f PA |
93 | /* The breakpoint's type. */ |
94 | enum bkpt_type type; | |
95 | ||
8b07ae33 PA |
96 | /* Link to this breakpoint's raw breakpoint. This is always |
97 | non-NULL. */ | |
98 | struct raw_breakpoint *raw; | |
99 | ||
b65d95c5 | 100 | /* Function to call when we hit this breakpoint. If it returns 1, |
8b07ae33 PA |
101 | the breakpoint shall be deleted; 0 or if this callback is NULL, |
102 | it will be left inserted. */ | |
b65d95c5 | 103 | int (*handler) (CORE_ADDR); |
611cb4a5 DJ |
104 | }; |
105 | ||
8b07ae33 PA |
106 | static struct raw_breakpoint * |
107 | find_raw_breakpoint_at (CORE_ADDR where) | |
108 | { | |
109 | struct process_info *proc = current_process (); | |
110 | struct raw_breakpoint *bp; | |
414a389f | 111 | |
8b07ae33 PA |
112 | for (bp = proc->raw_breakpoints; bp != NULL; bp = bp->next) |
113 | if (bp->pc == where) | |
114 | return bp; | |
115 | ||
116 | return NULL; | |
117 | } | |
118 | ||
119 | static struct raw_breakpoint * | |
d50171e4 | 120 | set_raw_breakpoint_at (CORE_ADDR where) |
611cb4a5 | 121 | { |
95954743 | 122 | struct process_info *proc = current_process (); |
8b07ae33 | 123 | struct raw_breakpoint *bp; |
d50171e4 | 124 | int err; |
6bf36717 | 125 | unsigned char buf[MAX_BREAKPOINT_LEN]; |
611cb4a5 DJ |
126 | |
127 | if (breakpoint_data == NULL) | |
128 | error ("Target does not support breakpoints."); | |
129 | ||
8b07ae33 PA |
130 | bp = find_raw_breakpoint_at (where); |
131 | if (bp != NULL) | |
132 | { | |
133 | bp->refcount++; | |
134 | return bp; | |
135 | } | |
136 | ||
d50171e4 PA |
137 | bp = xcalloc (1, sizeof (*bp)); |
138 | bp->pc = where; | |
8b07ae33 | 139 | bp->refcount = 1; |
611cb4a5 | 140 | |
fa593d66 PA |
141 | /* Note that there can be fast tracepoint jumps installed in the |
142 | same memory range, so to get at the original memory, we need to | |
143 | use read_inferior_memory, which masks those out. */ | |
6bf36717 | 144 | err = read_inferior_memory (where, buf, breakpoint_len); |
d50171e4 PA |
145 | if (err != 0) |
146 | { | |
147 | if (debug_threads) | |
148 | fprintf (stderr, | |
149 | "Failed to read shadow memory of" | |
150 | " breakpoint at 0x%s (%s).\n", | |
151 | paddress (where), strerror (err)); | |
152 | free (bp); | |
153 | return NULL; | |
154 | } | |
6bf36717 | 155 | memcpy (bp->old_data, buf, breakpoint_len); |
611cb4a5 | 156 | |
d50171e4 PA |
157 | err = (*the_target->write_memory) (where, breakpoint_data, |
158 | breakpoint_len); | |
159 | if (err != 0) | |
160 | { | |
161 | if (debug_threads) | |
162 | fprintf (stderr, | |
163 | "Failed to insert breakpoint at 0x%s (%s).\n", | |
164 | paddress (where), strerror (err)); | |
165 | free (bp); | |
166 | return NULL; | |
167 | } | |
168 | ||
169 | /* Link the breakpoint in. */ | |
170 | bp->inserted = 1; | |
8b07ae33 PA |
171 | bp->next = proc->raw_breakpoints; |
172 | proc->raw_breakpoints = bp; | |
d50171e4 PA |
173 | return bp; |
174 | } | |
175 | ||
fa593d66 PA |
176 | /* Notice that breakpoint traps are always installed on top of fast |
177 | tracepoint jumps. This is even if the fast tracepoint is installed | |
178 | at a later time compared to when the breakpoint was installed. | |
179 | This means that a stopping breakpoint or tracepoint has higher | |
180 | "priority". In turn, this allows having fast and slow tracepoints | |
181 | (and breakpoints) at the same address behave correctly. */ | |
182 | ||
183 | ||
184 | /* A fast tracepoint jump. */ | |
185 | ||
186 | struct fast_tracepoint_jump | |
187 | { | |
188 | struct fast_tracepoint_jump *next; | |
189 | ||
190 | /* A reference count. GDB can install more than one fast tracepoint | |
191 | at the same address (each with its own action list, for | |
192 | example). */ | |
193 | int refcount; | |
194 | ||
195 | /* The fast tracepoint's insertion address. There can only be one | |
196 | of these for a given PC. */ | |
197 | CORE_ADDR pc; | |
198 | ||
199 | /* Non-zero if this fast tracepoint jump is currently inserted in | |
200 | the inferior. */ | |
201 | int inserted; | |
202 | ||
203 | /* The length of the jump instruction. */ | |
204 | int length; | |
205 | ||
206 | /* A poor-man's flexible array member, holding both the jump | |
207 | instruction to insert, and a copy of the instruction that would | |
208 | be in memory had not been a jump there (the shadow memory of the | |
209 | tracepoint jump). */ | |
210 | unsigned char insn_and_shadow[0]; | |
211 | }; | |
212 | ||
213 | /* Fast tracepoint FP's jump instruction to insert. */ | |
214 | #define fast_tracepoint_jump_insn(fp) \ | |
215 | ((fp)->insn_and_shadow + 0) | |
216 | ||
217 | /* The shadow memory of fast tracepoint jump FP. */ | |
218 | #define fast_tracepoint_jump_shadow(fp) \ | |
219 | ((fp)->insn_and_shadow + (fp)->length) | |
220 | ||
221 | ||
222 | /* Return the fast tracepoint jump set at WHERE. */ | |
223 | ||
224 | static struct fast_tracepoint_jump * | |
225 | find_fast_tracepoint_jump_at (CORE_ADDR where) | |
226 | { | |
227 | struct process_info *proc = current_process (); | |
228 | struct fast_tracepoint_jump *jp; | |
229 | ||
230 | for (jp = proc->fast_tracepoint_jumps; jp != NULL; jp = jp->next) | |
231 | if (jp->pc == where) | |
232 | return jp; | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | int | |
238 | fast_tracepoint_jump_here (CORE_ADDR where) | |
239 | { | |
240 | struct fast_tracepoint_jump *jp = find_fast_tracepoint_jump_at (where); | |
241 | ||
242 | return (jp != NULL); | |
243 | } | |
244 | ||
245 | int | |
246 | delete_fast_tracepoint_jump (struct fast_tracepoint_jump *todel) | |
247 | { | |
248 | struct fast_tracepoint_jump *bp, **bp_link; | |
249 | int ret; | |
250 | struct process_info *proc = current_process (); | |
251 | ||
252 | bp = proc->fast_tracepoint_jumps; | |
253 | bp_link = &proc->fast_tracepoint_jumps; | |
254 | ||
255 | while (bp) | |
256 | { | |
257 | if (bp == todel) | |
258 | { | |
259 | if (--bp->refcount == 0) | |
260 | { | |
261 | struct fast_tracepoint_jump *prev_bp_link = *bp_link; | |
6bf36717 | 262 | unsigned char *buf; |
fa593d66 PA |
263 | |
264 | /* Unlink it. */ | |
265 | *bp_link = bp->next; | |
266 | ||
267 | /* Since there can be breakpoints inserted in the same | |
268 | address range, we use `write_inferior_memory', which | |
269 | takes care of layering breakpoints on top of fast | |
270 | tracepoints, and on top of the buffer we pass it. | |
271 | This works because we've already unlinked the fast | |
272 | tracepoint jump above. Also note that we need to | |
273 | pass the current shadow contents, because | |
274 | write_inferior_memory updates any shadow memory with | |
275 | what we pass here, and we want that to be a nop. */ | |
6bf36717 JK |
276 | buf = alloca (bp->length); |
277 | memcpy (buf, fast_tracepoint_jump_shadow (bp), bp->length); | |
278 | ret = write_inferior_memory (bp->pc, buf, bp->length); | |
fa593d66 PA |
279 | if (ret != 0) |
280 | { | |
281 | /* Something went wrong, relink the jump. */ | |
282 | *bp_link = prev_bp_link; | |
283 | ||
284 | if (debug_threads) | |
285 | fprintf (stderr, | |
286 | "Failed to uninsert fast tracepoint jump " | |
287 | "at 0x%s (%s) while deleting it.\n", | |
288 | paddress (bp->pc), strerror (ret)); | |
289 | return ret; | |
290 | } | |
291 | ||
292 | free (bp); | |
293 | } | |
294 | ||
295 | return 0; | |
296 | } | |
297 | else | |
298 | { | |
299 | bp_link = &bp->next; | |
300 | bp = *bp_link; | |
301 | } | |
302 | } | |
303 | ||
304 | warning ("Could not find fast tracepoint jump in list."); | |
305 | return ENOENT; | |
306 | } | |
307 | ||
5c73ff4e YQ |
308 | void |
309 | inc_ref_fast_tracepoint_jump (struct fast_tracepoint_jump *jp) | |
310 | { | |
311 | jp->refcount++; | |
312 | } | |
313 | ||
fa593d66 PA |
314 | struct fast_tracepoint_jump * |
315 | set_fast_tracepoint_jump (CORE_ADDR where, | |
316 | unsigned char *insn, ULONGEST length) | |
317 | { | |
318 | struct process_info *proc = current_process (); | |
319 | struct fast_tracepoint_jump *jp; | |
320 | int err; | |
6bf36717 | 321 | unsigned char *buf; |
fa593d66 PA |
322 | |
323 | /* We refcount fast tracepoint jumps. Check if we already know | |
324 | about a jump at this address. */ | |
325 | jp = find_fast_tracepoint_jump_at (where); | |
326 | if (jp != NULL) | |
327 | { | |
328 | jp->refcount++; | |
329 | return jp; | |
330 | } | |
331 | ||
332 | /* We don't, so create a new object. Double the length, because the | |
333 | flexible array member holds both the jump insn, and the | |
334 | shadow. */ | |
335 | jp = xcalloc (1, sizeof (*jp) + (length * 2)); | |
336 | jp->pc = where; | |
337 | jp->length = length; | |
338 | memcpy (fast_tracepoint_jump_insn (jp), insn, length); | |
339 | jp->refcount = 1; | |
6bf36717 | 340 | buf = alloca (length); |
fa593d66 PA |
341 | |
342 | /* Note that there can be trap breakpoints inserted in the same | |
343 | address range. To access the original memory contents, we use | |
344 | `read_inferior_memory', which masks out breakpoints. */ | |
6bf36717 | 345 | err = read_inferior_memory (where, buf, length); |
fa593d66 PA |
346 | if (err != 0) |
347 | { | |
348 | if (debug_threads) | |
349 | fprintf (stderr, | |
350 | "Failed to read shadow memory of" | |
351 | " fast tracepoint at 0x%s (%s).\n", | |
352 | paddress (where), strerror (err)); | |
353 | free (jp); | |
354 | return NULL; | |
355 | } | |
6bf36717 | 356 | memcpy (fast_tracepoint_jump_shadow (jp), buf, length); |
fa593d66 PA |
357 | |
358 | /* Link the jump in. */ | |
359 | jp->inserted = 1; | |
360 | jp->next = proc->fast_tracepoint_jumps; | |
361 | proc->fast_tracepoint_jumps = jp; | |
362 | ||
363 | /* Since there can be trap breakpoints inserted in the same address | |
364 | range, we use use `write_inferior_memory', which takes care of | |
365 | layering breakpoints on top of fast tracepoints, on top of the | |
366 | buffer we pass it. This works because we've already linked in | |
367 | the fast tracepoint jump above. Also note that we need to pass | |
368 | the current shadow contents, because write_inferior_memory | |
369 | updates any shadow memory with what we pass here, and we want | |
370 | that to be a nop. */ | |
6bf36717 | 371 | err = write_inferior_memory (where, buf, length); |
fa593d66 PA |
372 | if (err != 0) |
373 | { | |
374 | if (debug_threads) | |
375 | fprintf (stderr, | |
376 | "Failed to insert fast tracepoint jump at 0x%s (%s).\n", | |
377 | paddress (where), strerror (err)); | |
378 | ||
379 | /* Unlink it. */ | |
380 | proc->fast_tracepoint_jumps = jp->next; | |
381 | free (jp); | |
382 | ||
383 | return NULL; | |
384 | } | |
385 | ||
386 | return jp; | |
387 | } | |
388 | ||
389 | void | |
390 | uninsert_fast_tracepoint_jumps_at (CORE_ADDR pc) | |
391 | { | |
392 | struct fast_tracepoint_jump *jp; | |
393 | int err; | |
394 | ||
395 | jp = find_fast_tracepoint_jump_at (pc); | |
396 | if (jp == NULL) | |
397 | { | |
398 | /* This can happen when we remove all breakpoints while handling | |
399 | a step-over. */ | |
400 | if (debug_threads) | |
401 | fprintf (stderr, | |
402 | "Could not find fast tracepoint jump at 0x%s " | |
403 | "in list (uninserting).\n", | |
404 | paddress (pc)); | |
405 | return; | |
406 | } | |
407 | ||
408 | if (jp->inserted) | |
409 | { | |
6bf36717 JK |
410 | unsigned char *buf; |
411 | ||
fa593d66 PA |
412 | jp->inserted = 0; |
413 | ||
414 | /* Since there can be trap breakpoints inserted in the same | |
415 | address range, we use use `write_inferior_memory', which | |
416 | takes care of layering breakpoints on top of fast | |
417 | tracepoints, and on top of the buffer we pass it. This works | |
418 | because we've already marked the fast tracepoint fast | |
419 | tracepoint jump uninserted above. Also note that we need to | |
420 | pass the current shadow contents, because | |
421 | write_inferior_memory updates any shadow memory with what we | |
422 | pass here, and we want that to be a nop. */ | |
6bf36717 JK |
423 | buf = alloca (jp->length); |
424 | memcpy (buf, fast_tracepoint_jump_shadow (jp), jp->length); | |
425 | err = write_inferior_memory (jp->pc, buf, jp->length); | |
fa593d66 PA |
426 | if (err != 0) |
427 | { | |
428 | jp->inserted = 1; | |
429 | ||
430 | if (debug_threads) | |
431 | fprintf (stderr, | |
432 | "Failed to uninsert fast tracepoint jump at 0x%s (%s).\n", | |
433 | paddress (pc), strerror (err)); | |
434 | } | |
435 | } | |
436 | } | |
437 | ||
438 | void | |
439 | reinsert_fast_tracepoint_jumps_at (CORE_ADDR where) | |
440 | { | |
441 | struct fast_tracepoint_jump *jp; | |
442 | int err; | |
6bf36717 | 443 | unsigned char *buf; |
fa593d66 PA |
444 | |
445 | jp = find_fast_tracepoint_jump_at (where); | |
446 | if (jp == NULL) | |
447 | { | |
448 | /* This can happen when we remove breakpoints when a tracepoint | |
449 | hit causes a tracing stop, while handling a step-over. */ | |
450 | if (debug_threads) | |
451 | fprintf (stderr, | |
452 | "Could not find fast tracepoint jump at 0x%s " | |
453 | "in list (reinserting).\n", | |
454 | paddress (where)); | |
455 | return; | |
456 | } | |
457 | ||
458 | if (jp->inserted) | |
459 | error ("Jump already inserted at reinsert time."); | |
460 | ||
461 | jp->inserted = 1; | |
462 | ||
463 | /* Since there can be trap breakpoints inserted in the same address | |
464 | range, we use `write_inferior_memory', which takes care of | |
465 | layering breakpoints on top of fast tracepoints, and on top of | |
466 | the buffer we pass it. This works because we've already marked | |
467 | the fast tracepoint jump inserted above. Also note that we need | |
468 | to pass the current shadow contents, because | |
469 | write_inferior_memory updates any shadow memory with what we pass | |
470 | here, and we want that to be a nop. */ | |
6bf36717 JK |
471 | buf = alloca (jp->length); |
472 | memcpy (buf, fast_tracepoint_jump_shadow (jp), jp->length); | |
473 | err = write_inferior_memory (where, buf, jp->length); | |
fa593d66 PA |
474 | if (err != 0) |
475 | { | |
476 | jp->inserted = 0; | |
477 | ||
478 | if (debug_threads) | |
479 | fprintf (stderr, | |
480 | "Failed to reinsert fast tracepoint jump at 0x%s (%s).\n", | |
481 | paddress (where), strerror (err)); | |
482 | } | |
483 | } | |
484 | ||
414a389f | 485 | struct breakpoint * |
d50171e4 PA |
486 | set_breakpoint_at (CORE_ADDR where, int (*handler) (CORE_ADDR)) |
487 | { | |
488 | struct process_info *proc = current_process (); | |
489 | struct breakpoint *bp; | |
8b07ae33 | 490 | struct raw_breakpoint *raw; |
d50171e4 | 491 | |
8b07ae33 | 492 | raw = set_raw_breakpoint_at (where); |
d50171e4 | 493 | |
8b07ae33 | 494 | if (raw == NULL) |
d50171e4 PA |
495 | { |
496 | /* warn? */ | |
414a389f | 497 | return NULL; |
d50171e4 PA |
498 | } |
499 | ||
500 | bp = xcalloc (1, sizeof (struct breakpoint)); | |
414a389f | 501 | bp->type = other_breakpoint; |
8b07ae33 PA |
502 | |
503 | bp->raw = raw; | |
611cb4a5 DJ |
504 | bp->handler = handler; |
505 | ||
95954743 PA |
506 | bp->next = proc->breakpoints; |
507 | proc->breakpoints = bp; | |
414a389f PA |
508 | |
509 | return bp; | |
611cb4a5 DJ |
510 | } |
511 | ||
8b07ae33 PA |
512 | static int |
513 | delete_raw_breakpoint (struct process_info *proc, struct raw_breakpoint *todel) | |
514 | { | |
515 | struct raw_breakpoint *bp, **bp_link; | |
516 | int ret; | |
517 | ||
518 | bp = proc->raw_breakpoints; | |
519 | bp_link = &proc->raw_breakpoints; | |
520 | ||
521 | while (bp) | |
522 | { | |
523 | if (bp == todel) | |
524 | { | |
525 | if (bp->inserted) | |
526 | { | |
527 | struct raw_breakpoint *prev_bp_link = *bp_link; | |
6bf36717 | 528 | unsigned char buf[MAX_BREAKPOINT_LEN]; |
8b07ae33 PA |
529 | |
530 | *bp_link = bp->next; | |
531 | ||
fa593d66 PA |
532 | /* Since there can be trap breakpoints inserted in the |
533 | same address range, we use `write_inferior_memory', | |
534 | which takes care of layering breakpoints on top of | |
535 | fast tracepoints, and on top of the buffer we pass | |
536 | it. This works because we've already unlinked the | |
537 | fast tracepoint jump above. Also note that we need | |
538 | to pass the current shadow contents, because | |
539 | write_inferior_memory updates any shadow memory with | |
540 | what we pass here, and we want that to be a nop. */ | |
6bf36717 JK |
541 | memcpy (buf, bp->old_data, breakpoint_len); |
542 | ret = write_inferior_memory (bp->pc, buf, breakpoint_len); | |
8b07ae33 PA |
543 | if (ret != 0) |
544 | { | |
545 | /* Something went wrong, relink the breakpoint. */ | |
546 | *bp_link = prev_bp_link; | |
547 | ||
548 | if (debug_threads) | |
549 | fprintf (stderr, | |
550 | "Failed to uninsert raw breakpoint " | |
551 | "at 0x%s (%s) while deleting it.\n", | |
552 | paddress (bp->pc), strerror (ret)); | |
553 | return ret; | |
554 | } | |
555 | ||
556 | } | |
557 | else | |
558 | *bp_link = bp->next; | |
559 | ||
560 | free (bp); | |
561 | return 0; | |
562 | } | |
563 | else | |
564 | { | |
565 | bp_link = &bp->next; | |
566 | bp = *bp_link; | |
567 | } | |
568 | } | |
569 | ||
570 | warning ("Could not find raw breakpoint in list."); | |
571 | return ENOENT; | |
572 | } | |
573 | ||
574 | static int | |
575 | release_breakpoint (struct process_info *proc, struct breakpoint *bp) | |
576 | { | |
577 | int newrefcount; | |
578 | int ret; | |
579 | ||
580 | newrefcount = bp->raw->refcount - 1; | |
581 | if (newrefcount == 0) | |
582 | { | |
583 | ret = delete_raw_breakpoint (proc, bp->raw); | |
584 | if (ret != 0) | |
585 | return ret; | |
586 | } | |
587 | else | |
588 | bp->raw->refcount = newrefcount; | |
589 | ||
590 | free (bp); | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | static int | |
596 | delete_breakpoint_1 (struct process_info *proc, struct breakpoint *todel) | |
611cb4a5 | 597 | { |
414a389f | 598 | struct breakpoint *bp, **bp_link; |
8b07ae33 | 599 | int err; |
611cb4a5 | 600 | |
414a389f PA |
601 | bp = proc->breakpoints; |
602 | bp_link = &proc->breakpoints; | |
603 | ||
604 | while (bp) | |
611cb4a5 | 605 | { |
414a389f | 606 | if (bp == todel) |
611cb4a5 | 607 | { |
414a389f PA |
608 | *bp_link = bp->next; |
609 | ||
8b07ae33 PA |
610 | err = release_breakpoint (proc, bp); |
611 | if (err != 0) | |
612 | return err; | |
613 | ||
614 | bp = *bp_link; | |
615 | return 0; | |
611cb4a5 | 616 | } |
414a389f PA |
617 | else |
618 | { | |
619 | bp_link = &bp->next; | |
620 | bp = *bp_link; | |
621 | } | |
611cb4a5 | 622 | } |
414a389f | 623 | |
611cb4a5 | 624 | warning ("Could not find breakpoint in list."); |
8b07ae33 PA |
625 | return ENOENT; |
626 | } | |
627 | ||
219f2f23 | 628 | int |
8b07ae33 PA |
629 | delete_breakpoint (struct breakpoint *todel) |
630 | { | |
631 | struct process_info *proc = current_process (); | |
632 | return delete_breakpoint_1 (proc, todel); | |
611cb4a5 DJ |
633 | } |
634 | ||
635 | static struct breakpoint * | |
8b07ae33 | 636 | find_gdb_breakpoint_at (CORE_ADDR where) |
611cb4a5 | 637 | { |
95954743 | 638 | struct process_info *proc = current_process (); |
8b07ae33 | 639 | struct breakpoint *bp; |
611cb4a5 | 640 | |
8b07ae33 PA |
641 | for (bp = proc->breakpoints; bp != NULL; bp = bp->next) |
642 | if (bp->type == gdb_breakpoint && bp->raw->pc == where) | |
643 | return bp; | |
611cb4a5 DJ |
644 | |
645 | return NULL; | |
646 | } | |
647 | ||
8b07ae33 PA |
648 | int |
649 | set_gdb_breakpoint_at (CORE_ADDR where) | |
68070c10 | 650 | { |
8b07ae33 PA |
651 | struct breakpoint *bp; |
652 | ||
653 | if (breakpoint_data == NULL) | |
654 | return 1; | |
655 | ||
d3bbe7a0 PA |
656 | /* If we see GDB inserting a second breakpoint at the same address, |
657 | then the first breakpoint must have disappeared due to a shared | |
658 | library unload. On targets where the shared libraries are | |
659 | handled by userspace, like SVR4, for example, GDBserver can't | |
660 | tell if a library was loaded or unloaded. Since we refcount | |
661 | breakpoints, if we didn't do this, we'd just increase the | |
662 | refcount of the previous breakpoint at this address, but the trap | |
663 | was not planted in the inferior anymore, thus the breakpoint | |
664 | would never be hit. */ | |
665 | bp = find_gdb_breakpoint_at (where); | |
666 | if (bp != NULL) | |
667 | { | |
668 | delete_gdb_breakpoint_at (where); | |
669 | ||
670 | /* Might as well validate all other breakpoints. */ | |
671 | validate_breakpoints (); | |
672 | } | |
673 | ||
8b07ae33 PA |
674 | bp = set_breakpoint_at (where, NULL); |
675 | if (bp == NULL) | |
676 | return -1; | |
677 | ||
678 | bp->type = gdb_breakpoint; | |
679 | return 0; | |
680 | } | |
681 | ||
682 | int | |
683 | delete_gdb_breakpoint_at (CORE_ADDR addr) | |
684 | { | |
685 | struct breakpoint *bp; | |
686 | int err; | |
687 | ||
688 | if (breakpoint_data == NULL) | |
689 | return 1; | |
690 | ||
691 | bp = find_gdb_breakpoint_at (addr); | |
692 | if (bp == NULL) | |
693 | return -1; | |
694 | ||
695 | err = delete_breakpoint (bp); | |
696 | if (err) | |
697 | return -1; | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | int | |
703 | gdb_breakpoint_here (CORE_ADDR where) | |
704 | { | |
705 | struct breakpoint *bp = find_gdb_breakpoint_at (where); | |
706 | ||
707 | return (bp != NULL); | |
68070c10 PA |
708 | } |
709 | ||
d50171e4 PA |
710 | void |
711 | set_reinsert_breakpoint (CORE_ADDR stop_at) | |
611cb4a5 | 712 | { |
414a389f PA |
713 | struct breakpoint *bp; |
714 | ||
715 | bp = set_breakpoint_at (stop_at, NULL); | |
414a389f | 716 | bp->type = reinsert_breakpoint; |
611cb4a5 DJ |
717 | } |
718 | ||
719 | void | |
d50171e4 | 720 | delete_reinsert_breakpoints (void) |
611cb4a5 | 721 | { |
d50171e4 PA |
722 | struct process_info *proc = current_process (); |
723 | struct breakpoint *bp, **bp_link; | |
611cb4a5 | 724 | |
d50171e4 PA |
725 | bp = proc->breakpoints; |
726 | bp_link = &proc->breakpoints; | |
611cb4a5 | 727 | |
d50171e4 PA |
728 | while (bp) |
729 | { | |
414a389f PA |
730 | if (bp->type == reinsert_breakpoint) |
731 | { | |
732 | *bp_link = bp->next; | |
8b07ae33 | 733 | release_breakpoint (proc, bp); |
414a389f PA |
734 | bp = *bp_link; |
735 | } | |
736 | else | |
737 | { | |
738 | bp_link = &bp->next; | |
739 | bp = *bp_link; | |
740 | } | |
d50171e4 PA |
741 | } |
742 | } | |
b65d95c5 | 743 | |
d50171e4 | 744 | static void |
8b07ae33 | 745 | uninsert_raw_breakpoint (struct raw_breakpoint *bp) |
d50171e4 PA |
746 | { |
747 | if (bp->inserted) | |
748 | { | |
749 | int err; | |
6bf36717 | 750 | unsigned char buf[MAX_BREAKPOINT_LEN]; |
d50171e4 PA |
751 | |
752 | bp->inserted = 0; | |
fa593d66 PA |
753 | /* Since there can be fast tracepoint jumps inserted in the same |
754 | address range, we use `write_inferior_memory', which takes | |
755 | care of layering breakpoints on top of fast tracepoints, and | |
756 | on top of the buffer we pass it. This works because we've | |
757 | already unlinked the fast tracepoint jump above. Also note | |
758 | that we need to pass the current shadow contents, because | |
759 | write_inferior_memory updates any shadow memory with what we | |
760 | pass here, and we want that to be a nop. */ | |
6bf36717 JK |
761 | memcpy (buf, bp->old_data, breakpoint_len); |
762 | err = write_inferior_memory (bp->pc, buf, breakpoint_len); | |
d50171e4 PA |
763 | if (err != 0) |
764 | { | |
765 | bp->inserted = 1; | |
611cb4a5 | 766 | |
d50171e4 PA |
767 | if (debug_threads) |
768 | fprintf (stderr, | |
769 | "Failed to uninsert raw breakpoint at 0x%s (%s).\n", | |
770 | paddress (bp->pc), strerror (err)); | |
771 | } | |
772 | } | |
611cb4a5 DJ |
773 | } |
774 | ||
775 | void | |
d50171e4 | 776 | uninsert_breakpoints_at (CORE_ADDR pc) |
611cb4a5 | 777 | { |
8b07ae33 | 778 | struct raw_breakpoint *bp; |
611cb4a5 | 779 | |
8b07ae33 | 780 | bp = find_raw_breakpoint_at (pc); |
611cb4a5 | 781 | if (bp == NULL) |
d50171e4 PA |
782 | { |
783 | /* This can happen when we remove all breakpoints while handling | |
784 | a step-over. */ | |
785 | if (debug_threads) | |
786 | fprintf (stderr, | |
787 | "Could not find breakpoint at 0x%s " | |
788 | "in list (uninserting).\n", | |
789 | paddress (pc)); | |
790 | return; | |
791 | } | |
611cb4a5 | 792 | |
d50171e4 | 793 | if (bp->inserted) |
8b07ae33 | 794 | uninsert_raw_breakpoint (bp); |
611cb4a5 DJ |
795 | } |
796 | ||
0fb4aa4b PA |
797 | void |
798 | uninsert_all_breakpoints (void) | |
799 | { | |
800 | struct process_info *proc = current_process (); | |
801 | struct raw_breakpoint *bp; | |
802 | ||
803 | for (bp = proc->raw_breakpoints; bp != NULL; bp = bp->next) | |
804 | if (bp->inserted) | |
805 | uninsert_raw_breakpoint (bp); | |
806 | } | |
807 | ||
d50171e4 | 808 | static void |
8b07ae33 | 809 | reinsert_raw_breakpoint (struct raw_breakpoint *bp) |
611cb4a5 | 810 | { |
d50171e4 | 811 | int err; |
611cb4a5 | 812 | |
d50171e4 | 813 | if (bp->inserted) |
611cb4a5 DJ |
814 | error ("Breakpoint already inserted at reinsert time."); |
815 | ||
d50171e4 PA |
816 | err = (*the_target->write_memory) (bp->pc, breakpoint_data, |
817 | breakpoint_len); | |
818 | if (err == 0) | |
819 | bp->inserted = 1; | |
820 | else if (debug_threads) | |
821 | fprintf (stderr, | |
822 | "Failed to reinsert breakpoint at 0x%s (%s).\n", | |
823 | paddress (bp->pc), strerror (err)); | |
611cb4a5 DJ |
824 | } |
825 | ||
d50171e4 PA |
826 | void |
827 | reinsert_breakpoints_at (CORE_ADDR pc) | |
611cb4a5 | 828 | { |
8b07ae33 | 829 | struct raw_breakpoint *bp; |
611cb4a5 | 830 | |
8b07ae33 | 831 | bp = find_raw_breakpoint_at (pc); |
611cb4a5 | 832 | if (bp == NULL) |
611cb4a5 | 833 | { |
d50171e4 PA |
834 | /* This can happen when we remove all breakpoints while handling |
835 | a step-over. */ | |
836 | if (debug_threads) | |
837 | fprintf (stderr, | |
8b07ae33 | 838 | "Could not find raw breakpoint at 0x%s " |
d50171e4 PA |
839 | "in list (reinserting).\n", |
840 | paddress (pc)); | |
841 | return; | |
611cb4a5 DJ |
842 | } |
843 | ||
414a389f | 844 | reinsert_raw_breakpoint (bp); |
d50171e4 PA |
845 | } |
846 | ||
0fb4aa4b PA |
847 | void |
848 | reinsert_all_breakpoints (void) | |
849 | { | |
850 | struct process_info *proc = current_process (); | |
851 | struct raw_breakpoint *bp; | |
852 | ||
853 | for (bp = proc->raw_breakpoints; bp != NULL; bp = bp->next) | |
854 | if (!bp->inserted) | |
855 | reinsert_raw_breakpoint (bp); | |
856 | } | |
857 | ||
d50171e4 PA |
858 | void |
859 | check_breakpoints (CORE_ADDR stop_pc) | |
860 | { | |
861 | struct process_info *proc = current_process (); | |
862 | struct breakpoint *bp, **bp_link; | |
863 | ||
864 | bp = proc->breakpoints; | |
865 | bp_link = &proc->breakpoints; | |
866 | ||
867 | while (bp) | |
b65d95c5 | 868 | { |
8b07ae33 | 869 | if (bp->raw->pc == stop_pc) |
d50171e4 | 870 | { |
8b07ae33 | 871 | if (!bp->raw->inserted) |
d50171e4 PA |
872 | { |
873 | warning ("Hit a removed breakpoint?"); | |
874 | return; | |
875 | } | |
876 | ||
877 | if (bp->handler != NULL && (*bp->handler) (stop_pc)) | |
878 | { | |
879 | *bp_link = bp->next; | |
880 | ||
8b07ae33 | 881 | release_breakpoint (proc, bp); |
d50171e4 PA |
882 | |
883 | bp = *bp_link; | |
884 | continue; | |
885 | } | |
886 | } | |
887 | ||
888 | bp_link = &bp->next; | |
889 | bp = *bp_link; | |
b65d95c5 | 890 | } |
611cb4a5 DJ |
891 | } |
892 | ||
893 | void | |
f450004a | 894 | set_breakpoint_data (const unsigned char *bp_data, int bp_len) |
611cb4a5 DJ |
895 | { |
896 | breakpoint_data = bp_data; | |
897 | breakpoint_len = bp_len; | |
898 | } | |
899 | ||
d50171e4 PA |
900 | int |
901 | breakpoint_here (CORE_ADDR addr) | |
902 | { | |
8b07ae33 | 903 | return (find_raw_breakpoint_at (addr) != NULL); |
d50171e4 PA |
904 | } |
905 | ||
906 | int | |
907 | breakpoint_inserted_here (CORE_ADDR addr) | |
908 | { | |
8b07ae33 | 909 | struct raw_breakpoint *bp; |
d50171e4 | 910 | |
8b07ae33 | 911 | bp = find_raw_breakpoint_at (addr); |
d50171e4 | 912 | |
8b07ae33 | 913 | return (bp != NULL && bp->inserted); |
d50171e4 PA |
914 | } |
915 | ||
d3bbe7a0 PA |
916 | static int |
917 | validate_inserted_breakpoint (struct raw_breakpoint *bp) | |
918 | { | |
919 | unsigned char *buf; | |
920 | int err; | |
921 | ||
922 | gdb_assert (bp->inserted); | |
923 | ||
924 | buf = alloca (breakpoint_len); | |
925 | err = (*the_target->read_memory) (bp->pc, buf, breakpoint_len); | |
926 | if (err || memcmp (buf, breakpoint_data, breakpoint_len) != 0) | |
927 | { | |
928 | /* Tag it as gone. */ | |
929 | bp->inserted = 0; | |
930 | bp->shlib_disabled = 1; | |
931 | return 0; | |
932 | } | |
933 | ||
934 | return 1; | |
935 | } | |
936 | ||
937 | static void | |
938 | delete_disabled_breakpoints (void) | |
939 | { | |
940 | struct process_info *proc = current_process (); | |
941 | struct breakpoint *bp, *next; | |
942 | ||
943 | for (bp = proc->breakpoints; bp != NULL; bp = next) | |
944 | { | |
945 | next = bp->next; | |
946 | if (bp->raw->shlib_disabled) | |
947 | delete_breakpoint_1 (proc, bp); | |
948 | } | |
949 | } | |
950 | ||
951 | /* Check if breakpoints we inserted still appear to be inserted. They | |
952 | may disappear due to a shared library unload, and worse, a new | |
953 | shared library may be reloaded at the same address as the | |
954 | previously unloaded one. If that happens, we should make sure that | |
955 | the shadow memory of the old breakpoints isn't used when reading or | |
956 | writing memory. */ | |
957 | ||
958 | void | |
959 | validate_breakpoints (void) | |
960 | { | |
961 | struct process_info *proc = current_process (); | |
962 | struct breakpoint *bp; | |
963 | ||
964 | for (bp = proc->breakpoints; bp != NULL; bp = bp->next) | |
965 | { | |
966 | if (bp->raw->inserted) | |
967 | validate_inserted_breakpoint (bp->raw); | |
968 | } | |
969 | ||
970 | delete_disabled_breakpoints (); | |
971 | } | |
972 | ||
611cb4a5 | 973 | void |
f450004a | 974 | check_mem_read (CORE_ADDR mem_addr, unsigned char *buf, int mem_len) |
611cb4a5 | 975 | { |
95954743 | 976 | struct process_info *proc = current_process (); |
8b07ae33 | 977 | struct raw_breakpoint *bp = proc->raw_breakpoints; |
fa593d66 | 978 | struct fast_tracepoint_jump *jp = proc->fast_tracepoint_jumps; |
611cb4a5 | 979 | CORE_ADDR mem_end = mem_addr + mem_len; |
d3bbe7a0 | 980 | int disabled_one = 0; |
611cb4a5 | 981 | |
fa593d66 PA |
982 | for (; jp != NULL; jp = jp->next) |
983 | { | |
984 | CORE_ADDR bp_end = jp->pc + jp->length; | |
985 | CORE_ADDR start, end; | |
986 | int copy_offset, copy_len, buf_offset; | |
987 | ||
6bf36717 JK |
988 | gdb_assert (fast_tracepoint_jump_shadow (jp) >= buf + mem_len |
989 | || buf >= fast_tracepoint_jump_shadow (jp) + (jp)->length); | |
990 | ||
fa593d66 PA |
991 | if (mem_addr >= bp_end) |
992 | continue; | |
993 | if (jp->pc >= mem_end) | |
994 | continue; | |
995 | ||
996 | start = jp->pc; | |
997 | if (mem_addr > start) | |
998 | start = mem_addr; | |
999 | ||
1000 | end = bp_end; | |
1001 | if (end > mem_end) | |
1002 | end = mem_end; | |
1003 | ||
1004 | copy_len = end - start; | |
1005 | copy_offset = start - jp->pc; | |
1006 | buf_offset = start - mem_addr; | |
1007 | ||
1008 | if (jp->inserted) | |
1009 | memcpy (buf + buf_offset, | |
1010 | fast_tracepoint_jump_shadow (jp) + copy_offset, | |
1011 | copy_len); | |
1012 | } | |
1013 | ||
611cb4a5 DJ |
1014 | for (; bp != NULL; bp = bp->next) |
1015 | { | |
1016 | CORE_ADDR bp_end = bp->pc + breakpoint_len; | |
1017 | CORE_ADDR start, end; | |
1018 | int copy_offset, copy_len, buf_offset; | |
1019 | ||
6bf36717 JK |
1020 | gdb_assert (bp->old_data >= buf + mem_len |
1021 | || buf >= &bp->old_data[sizeof (bp->old_data)]); | |
1022 | ||
611cb4a5 DJ |
1023 | if (mem_addr >= bp_end) |
1024 | continue; | |
1025 | if (bp->pc >= mem_end) | |
1026 | continue; | |
1027 | ||
1028 | start = bp->pc; | |
1029 | if (mem_addr > start) | |
1030 | start = mem_addr; | |
1031 | ||
1032 | end = bp_end; | |
1033 | if (end > mem_end) | |
1034 | end = mem_end; | |
1035 | ||
1036 | copy_len = end - start; | |
1037 | copy_offset = start - bp->pc; | |
1038 | buf_offset = start - mem_addr; | |
1039 | ||
8b07ae33 | 1040 | if (bp->inserted) |
d3bbe7a0 PA |
1041 | { |
1042 | if (validate_inserted_breakpoint (bp)) | |
1043 | memcpy (buf + buf_offset, bp->old_data + copy_offset, copy_len); | |
1044 | else | |
1045 | disabled_one = 1; | |
1046 | } | |
611cb4a5 | 1047 | } |
d3bbe7a0 PA |
1048 | |
1049 | if (disabled_one) | |
1050 | delete_disabled_breakpoints (); | |
611cb4a5 DJ |
1051 | } |
1052 | ||
1053 | void | |
b9fd1791 PA |
1054 | check_mem_write (CORE_ADDR mem_addr, unsigned char *buf, |
1055 | const unsigned char *myaddr, int mem_len) | |
611cb4a5 | 1056 | { |
95954743 | 1057 | struct process_info *proc = current_process (); |
8b07ae33 | 1058 | struct raw_breakpoint *bp = proc->raw_breakpoints; |
fa593d66 | 1059 | struct fast_tracepoint_jump *jp = proc->fast_tracepoint_jumps; |
611cb4a5 | 1060 | CORE_ADDR mem_end = mem_addr + mem_len; |
d3bbe7a0 | 1061 | int disabled_one = 0; |
611cb4a5 | 1062 | |
fa593d66 PA |
1063 | /* First fast tracepoint jumps, then breakpoint traps on top. */ |
1064 | ||
1065 | for (; jp != NULL; jp = jp->next) | |
1066 | { | |
1067 | CORE_ADDR jp_end = jp->pc + jp->length; | |
1068 | CORE_ADDR start, end; | |
1069 | int copy_offset, copy_len, buf_offset; | |
1070 | ||
6bf36717 JK |
1071 | gdb_assert (fast_tracepoint_jump_shadow (jp) >= myaddr + mem_len |
1072 | || myaddr >= fast_tracepoint_jump_shadow (jp) + (jp)->length); | |
1073 | gdb_assert (fast_tracepoint_jump_insn (jp) >= buf + mem_len | |
1074 | || buf >= fast_tracepoint_jump_insn (jp) + (jp)->length); | |
1075 | ||
fa593d66 PA |
1076 | if (mem_addr >= jp_end) |
1077 | continue; | |
1078 | if (jp->pc >= mem_end) | |
1079 | continue; | |
1080 | ||
1081 | start = jp->pc; | |
1082 | if (mem_addr > start) | |
1083 | start = mem_addr; | |
1084 | ||
1085 | end = jp_end; | |
1086 | if (end > mem_end) | |
1087 | end = mem_end; | |
1088 | ||
1089 | copy_len = end - start; | |
1090 | copy_offset = start - jp->pc; | |
1091 | buf_offset = start - mem_addr; | |
1092 | ||
1093 | memcpy (fast_tracepoint_jump_shadow (jp) + copy_offset, | |
b9fd1791 | 1094 | myaddr + buf_offset, copy_len); |
fa593d66 PA |
1095 | if (jp->inserted) |
1096 | memcpy (buf + buf_offset, | |
1097 | fast_tracepoint_jump_insn (jp) + copy_offset, copy_len); | |
1098 | } | |
1099 | ||
611cb4a5 DJ |
1100 | for (; bp != NULL; bp = bp->next) |
1101 | { | |
1102 | CORE_ADDR bp_end = bp->pc + breakpoint_len; | |
1103 | CORE_ADDR start, end; | |
1104 | int copy_offset, copy_len, buf_offset; | |
1105 | ||
6bf36717 JK |
1106 | gdb_assert (bp->old_data >= myaddr + mem_len |
1107 | || myaddr >= &bp->old_data[sizeof (bp->old_data)]); | |
1108 | ||
611cb4a5 DJ |
1109 | if (mem_addr >= bp_end) |
1110 | continue; | |
1111 | if (bp->pc >= mem_end) | |
1112 | continue; | |
1113 | ||
1114 | start = bp->pc; | |
1115 | if (mem_addr > start) | |
1116 | start = mem_addr; | |
1117 | ||
1118 | end = bp_end; | |
1119 | if (end > mem_end) | |
1120 | end = mem_end; | |
1121 | ||
1122 | copy_len = end - start; | |
1123 | copy_offset = start - bp->pc; | |
1124 | buf_offset = start - mem_addr; | |
1125 | ||
b9fd1791 | 1126 | memcpy (bp->old_data + copy_offset, myaddr + buf_offset, copy_len); |
d50171e4 | 1127 | if (bp->inserted) |
d3bbe7a0 PA |
1128 | { |
1129 | if (validate_inserted_breakpoint (bp)) | |
1130 | memcpy (buf + buf_offset, breakpoint_data + copy_offset, copy_len); | |
1131 | else | |
1132 | disabled_one = 1; | |
1133 | } | |
611cb4a5 | 1134 | } |
d3bbe7a0 PA |
1135 | |
1136 | if (disabled_one) | |
1137 | delete_disabled_breakpoints (); | |
611cb4a5 | 1138 | } |
ae13219e | 1139 | |
95954743 | 1140 | /* Delete all breakpoints, and un-insert them from the inferior. */ |
ae13219e DJ |
1141 | |
1142 | void | |
1143 | delete_all_breakpoints (void) | |
1144 | { | |
95954743 PA |
1145 | struct process_info *proc = current_process (); |
1146 | ||
1147 | while (proc->breakpoints) | |
8b07ae33 | 1148 | delete_breakpoint_1 (proc, proc->breakpoints); |
95954743 PA |
1149 | } |
1150 | ||
f9e39928 | 1151 | /* Clear the "inserted" flag in all breakpoints. */ |
95954743 PA |
1152 | |
1153 | void | |
f9e39928 | 1154 | mark_breakpoints_out (struct process_info *proc) |
95954743 | 1155 | { |
8b07ae33 | 1156 | struct raw_breakpoint *raw_bp; |
95954743 | 1157 | |
8b07ae33 PA |
1158 | for (raw_bp = proc->raw_breakpoints; raw_bp != NULL; raw_bp = raw_bp->next) |
1159 | raw_bp->inserted = 0; | |
f9e39928 PA |
1160 | } |
1161 | ||
1162 | /* Release all breakpoints, but do not try to un-insert them from the | |
1163 | inferior. */ | |
1164 | ||
1165 | void | |
1166 | free_all_breakpoints (struct process_info *proc) | |
1167 | { | |
1168 | mark_breakpoints_out (proc); | |
8b07ae33 PA |
1169 | |
1170 | /* Note: use PROC explicitly instead of deferring to | |
1171 | delete_all_breakpoints --- CURRENT_INFERIOR may already have been | |
1172 | released when we get here. There should be no call to | |
1173 | current_process from here on. */ | |
95954743 | 1174 | while (proc->breakpoints) |
8b07ae33 | 1175 | delete_breakpoint_1 (proc, proc->breakpoints); |
ae13219e | 1176 | } |