Commit | Line | Data |
---|---|---|
69d05d38 HZ |
1 | /* Process record and replay target for GDB, the GNU debugger. |
2 | ||
3 | Copyright (C) 2008, 2009 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "gdbcmd.h" | |
22 | #include "regcache.h" | |
23 | #include "gdbthread.h" | |
24 | #include "event-top.h" | |
25 | #include "exceptions.h" | |
26 | #include "record.h" | |
27 | ||
28 | #include <signal.h> | |
29 | ||
30 | #define DEFAULT_RECORD_INSN_MAX_NUM 200000 | |
31 | ||
32 | #define RECORD_IS_REPLAY \ | |
33 | (record_list->next || execution_direction == EXEC_REVERSE) | |
34 | ||
fda458ee | 35 | /* These are the core structs of the process record functionality. |
69d05d38 | 36 | |
fda458ee | 37 | A record_entry is a record of the value change of a register |
69d05d38 | 38 | ("record_reg") or a part of memory ("record_mem"). And each |
fda458ee MS |
39 | instruction must have a struct record_entry ("record_end") that |
40 | indicates that this is the last struct record_entry of this | |
41 | instruction. | |
69d05d38 | 42 | |
fda458ee MS |
43 | Each struct record_entry is linked to "record_list" by "prev" and |
44 | "next" pointers. */ | |
69d05d38 HZ |
45 | |
46 | struct record_reg_entry | |
47 | { | |
48 | int num; | |
49 | gdb_byte *val; | |
50 | }; | |
51 | ||
52 | struct record_mem_entry | |
53 | { | |
54 | CORE_ADDR addr; | |
55 | int len; | |
afd0cd3f MS |
56 | /* Set this flag if target memory for this entry |
57 | can no longer be accessed. */ | |
58 | int mem_entry_not_accessible; | |
69d05d38 HZ |
59 | gdb_byte *val; |
60 | }; | |
61 | ||
62 | enum record_type | |
63 | { | |
64 | record_end = 0, | |
65 | record_reg, | |
66 | record_mem | |
67 | }; | |
68 | ||
69 | struct record_entry | |
70 | { | |
71 | struct record_entry *prev; | |
72 | struct record_entry *next; | |
73 | enum record_type type; | |
74 | union | |
75 | { | |
76 | /* reg */ | |
77 | struct record_reg_entry reg; | |
78 | /* mem */ | |
79 | struct record_mem_entry mem; | |
80 | } u; | |
81 | }; | |
82 | ||
83 | /* This is the debug switch for process record. */ | |
84 | int record_debug = 0; | |
85 | ||
86 | /* These list is for execution log. */ | |
87 | static struct record_entry record_first; | |
88 | static struct record_entry *record_list = &record_first; | |
89 | static struct record_entry *record_arch_list_head = NULL; | |
90 | static struct record_entry *record_arch_list_tail = NULL; | |
91 | ||
92 | /* 1 ask user. 0 auto delete the last struct record_entry. */ | |
93 | static int record_stop_at_limit = 1; | |
94 | static int record_insn_max_num = DEFAULT_RECORD_INSN_MAX_NUM; | |
95 | static int record_insn_num = 0; | |
96 | ||
97 | /* The target_ops of process record. */ | |
98 | static struct target_ops record_ops; | |
99 | ||
100 | /* The beneath function pointers. */ | |
101 | static struct target_ops *record_beneath_to_resume_ops; | |
102 | static void (*record_beneath_to_resume) (struct target_ops *, ptid_t, int, | |
103 | enum target_signal); | |
104 | static struct target_ops *record_beneath_to_wait_ops; | |
105 | static ptid_t (*record_beneath_to_wait) (struct target_ops *, ptid_t, | |
47608cb1 PA |
106 | struct target_waitstatus *, |
107 | int); | |
69d05d38 HZ |
108 | static struct target_ops *record_beneath_to_store_registers_ops; |
109 | static void (*record_beneath_to_store_registers) (struct target_ops *, | |
110 | struct regcache *, | |
111 | int regno); | |
112 | static struct target_ops *record_beneath_to_xfer_partial_ops; | |
113 | static LONGEST (*record_beneath_to_xfer_partial) (struct target_ops *ops, | |
114 | enum target_object object, | |
115 | const char *annex, | |
116 | gdb_byte *readbuf, | |
117 | const gdb_byte *writebuf, | |
118 | ULONGEST offset, | |
119 | LONGEST len); | |
a6d9a66e UW |
120 | static int (*record_beneath_to_insert_breakpoint) (struct gdbarch *, |
121 | struct bp_target_info *); | |
122 | static int (*record_beneath_to_remove_breakpoint) (struct gdbarch *, | |
123 | struct bp_target_info *); | |
69d05d38 HZ |
124 | |
125 | static void | |
126 | record_list_release (struct record_entry *rec) | |
127 | { | |
128 | struct record_entry *tmp; | |
129 | ||
130 | if (!rec) | |
131 | return; | |
132 | ||
133 | while (rec->next) | |
134 | { | |
135 | rec = rec->next; | |
136 | } | |
137 | ||
138 | while (rec->prev) | |
139 | { | |
140 | tmp = rec; | |
141 | rec = rec->prev; | |
142 | if (tmp->type == record_reg) | |
143 | xfree (tmp->u.reg.val); | |
144 | else if (tmp->type == record_mem) | |
145 | xfree (tmp->u.mem.val); | |
146 | xfree (tmp); | |
147 | } | |
148 | ||
149 | if (rec != &record_first) | |
150 | xfree (rec); | |
151 | } | |
152 | ||
153 | static void | |
154 | record_list_release_next (void) | |
155 | { | |
156 | struct record_entry *rec = record_list; | |
157 | struct record_entry *tmp = rec->next; | |
158 | rec->next = NULL; | |
159 | while (tmp) | |
160 | { | |
161 | rec = tmp->next; | |
12b1a979 | 162 | if (tmp->type == record_end) |
69d05d38 HZ |
163 | record_insn_num--; |
164 | else if (tmp->type == record_reg) | |
165 | xfree (tmp->u.reg.val); | |
166 | else if (tmp->type == record_mem) | |
167 | xfree (tmp->u.mem.val); | |
168 | xfree (tmp); | |
169 | tmp = rec; | |
170 | } | |
171 | } | |
172 | ||
173 | static void | |
174 | record_list_release_first (void) | |
175 | { | |
176 | struct record_entry *tmp = NULL; | |
177 | enum record_type type; | |
178 | ||
179 | if (!record_first.next) | |
180 | return; | |
181 | ||
182 | while (1) | |
183 | { | |
184 | type = record_first.next->type; | |
185 | ||
186 | if (type == record_reg) | |
187 | xfree (record_first.next->u.reg.val); | |
188 | else if (type == record_mem) | |
189 | xfree (record_first.next->u.mem.val); | |
190 | tmp = record_first.next; | |
191 | record_first.next = tmp->next; | |
192 | xfree (tmp); | |
193 | ||
194 | if (!record_first.next) | |
195 | { | |
196 | gdb_assert (record_insn_num == 1); | |
197 | break; | |
198 | } | |
199 | ||
200 | record_first.next->prev = &record_first; | |
201 | ||
202 | if (type == record_end) | |
203 | break; | |
204 | } | |
205 | ||
206 | record_insn_num--; | |
207 | } | |
208 | ||
209 | /* Add a struct record_entry to record_arch_list. */ | |
210 | ||
211 | static void | |
212 | record_arch_list_add (struct record_entry *rec) | |
213 | { | |
214 | if (record_debug > 1) | |
215 | fprintf_unfiltered (gdb_stdlog, | |
216 | "Process record: record_arch_list_add %s.\n", | |
217 | host_address_to_string (rec)); | |
218 | ||
219 | if (record_arch_list_tail) | |
220 | { | |
221 | record_arch_list_tail->next = rec; | |
222 | rec->prev = record_arch_list_tail; | |
223 | record_arch_list_tail = rec; | |
224 | } | |
225 | else | |
226 | { | |
227 | record_arch_list_head = rec; | |
228 | record_arch_list_tail = rec; | |
229 | } | |
230 | } | |
231 | ||
232 | /* Record the value of a register NUM to record_arch_list. */ | |
233 | ||
234 | int | |
235 | record_arch_list_add_reg (struct regcache *regcache, int num) | |
236 | { | |
237 | struct record_entry *rec; | |
238 | ||
239 | if (record_debug > 1) | |
240 | fprintf_unfiltered (gdb_stdlog, | |
241 | "Process record: add register num = %d to " | |
242 | "record list.\n", | |
243 | num); | |
244 | ||
245 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
246 | rec->u.reg.val = (gdb_byte *) xmalloc (MAX_REGISTER_SIZE); | |
247 | rec->prev = NULL; | |
248 | rec->next = NULL; | |
249 | rec->type = record_reg; | |
250 | rec->u.reg.num = num; | |
251 | ||
252 | regcache_raw_read (regcache, num, rec->u.reg.val); | |
253 | ||
254 | record_arch_list_add (rec); | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | /* Record the value of a region of memory whose address is ADDR and | |
260 | length is LEN to record_arch_list. */ | |
261 | ||
262 | int | |
263 | record_arch_list_add_mem (CORE_ADDR addr, int len) | |
264 | { | |
265 | struct record_entry *rec; | |
266 | ||
267 | if (record_debug > 1) | |
268 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 | 269 | "Process record: add mem addr = %s len = %d to " |
69d05d38 | 270 | "record list.\n", |
5af949e3 | 271 | paddress (target_gdbarch, addr), len); |
69d05d38 HZ |
272 | |
273 | if (!addr) | |
274 | return 0; | |
275 | ||
276 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
277 | rec->u.mem.val = (gdb_byte *) xmalloc (len); | |
278 | rec->prev = NULL; | |
279 | rec->next = NULL; | |
280 | rec->type = record_mem; | |
281 | rec->u.mem.addr = addr; | |
282 | rec->u.mem.len = len; | |
afd0cd3f | 283 | rec->u.mem.mem_entry_not_accessible = 0; |
69d05d38 HZ |
284 | |
285 | if (target_read_memory (addr, rec->u.mem.val, len)) | |
286 | { | |
287 | if (record_debug) | |
288 | fprintf_unfiltered (gdb_stdlog, | |
289 | "Process record: error reading memory at " | |
5af949e3 UW |
290 | "addr = %s len = %d.\n", |
291 | paddress (target_gdbarch, addr), len); | |
69d05d38 HZ |
292 | xfree (rec->u.mem.val); |
293 | xfree (rec); | |
294 | return -1; | |
295 | } | |
296 | ||
297 | record_arch_list_add (rec); | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
302 | /* Add a record_end type struct record_entry to record_arch_list. */ | |
303 | ||
304 | int | |
305 | record_arch_list_add_end (void) | |
306 | { | |
307 | struct record_entry *rec; | |
308 | ||
309 | if (record_debug > 1) | |
310 | fprintf_unfiltered (gdb_stdlog, | |
311 | "Process record: add end to arch list.\n"); | |
312 | ||
313 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
314 | rec->prev = NULL; | |
315 | rec->next = NULL; | |
316 | rec->type = record_end; | |
317 | ||
318 | record_arch_list_add (rec); | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static void | |
324 | record_check_insn_num (int set_terminal) | |
325 | { | |
326 | if (record_insn_max_num) | |
327 | { | |
328 | gdb_assert (record_insn_num <= record_insn_max_num); | |
329 | if (record_insn_num == record_insn_max_num) | |
330 | { | |
331 | /* Ask user what to do. */ | |
332 | if (record_stop_at_limit) | |
333 | { | |
334 | int q; | |
335 | if (set_terminal) | |
336 | target_terminal_ours (); | |
337 | q = yquery (_("Do you want to auto delete previous execution " | |
338 | "log entries when record/replay buffer becomes " | |
339 | "full (record stop-at-limit)?")); | |
340 | if (set_terminal) | |
341 | target_terminal_inferior (); | |
342 | if (q) | |
343 | record_stop_at_limit = 0; | |
344 | else | |
345 | error (_("Process record: inferior program stopped.")); | |
346 | } | |
347 | } | |
348 | } | |
349 | } | |
350 | ||
351 | /* Before inferior step (when GDB record the running message, inferior | |
352 | only can step), GDB will call this function to record the values to | |
353 | record_list. This function will call gdbarch_process_record to | |
354 | record the running message of inferior and set them to | |
355 | record_arch_list, and add it to record_list. */ | |
356 | ||
357 | static void | |
358 | record_message_cleanups (void *ignore) | |
359 | { | |
360 | record_list_release (record_arch_list_tail); | |
361 | } | |
362 | ||
363 | static int | |
364 | record_message (void *args) | |
365 | { | |
366 | int ret; | |
367 | struct regcache *regcache = args; | |
368 | struct cleanup *old_cleanups = make_cleanup (record_message_cleanups, 0); | |
369 | ||
370 | record_arch_list_head = NULL; | |
371 | record_arch_list_tail = NULL; | |
372 | ||
373 | /* Check record_insn_num. */ | |
374 | record_check_insn_num (1); | |
375 | ||
376 | ret = gdbarch_process_record (get_regcache_arch (regcache), | |
377 | regcache, | |
378 | regcache_read_pc (regcache)); | |
379 | if (ret > 0) | |
380 | error (_("Process record: inferior program stopped.")); | |
381 | if (ret < 0) | |
382 | error (_("Process record: failed to record execution log.")); | |
383 | ||
384 | discard_cleanups (old_cleanups); | |
385 | ||
386 | record_list->next = record_arch_list_head; | |
387 | record_arch_list_head->prev = record_list; | |
388 | record_list = record_arch_list_tail; | |
389 | ||
390 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
391 | record_list_release_first (); | |
392 | else | |
393 | record_insn_num++; | |
394 | ||
395 | return 1; | |
396 | } | |
397 | ||
398 | static int | |
399 | do_record_message (struct regcache *regcache) | |
400 | { | |
401 | return catch_errors (record_message, regcache, NULL, RETURN_MASK_ALL); | |
402 | } | |
403 | ||
404 | /* Set to 1 if record_store_registers and record_xfer_partial | |
405 | doesn't need record. */ | |
406 | ||
407 | static int record_gdb_operation_disable = 0; | |
408 | ||
409 | struct cleanup * | |
410 | record_gdb_operation_disable_set (void) | |
411 | { | |
412 | struct cleanup *old_cleanups = NULL; | |
413 | ||
414 | old_cleanups = | |
415 | make_cleanup_restore_integer (&record_gdb_operation_disable); | |
416 | record_gdb_operation_disable = 1; | |
417 | ||
418 | return old_cleanups; | |
419 | } | |
420 | ||
421 | static void | |
422 | record_open (char *name, int from_tty) | |
423 | { | |
424 | struct target_ops *t; | |
425 | ||
426 | if (record_debug) | |
427 | fprintf_unfiltered (gdb_stdlog, "Process record: record_open\n"); | |
428 | ||
429 | /* check exec */ | |
430 | if (!target_has_execution) | |
431 | error (_("Process record: the program is not being run.")); | |
432 | if (non_stop) | |
433 | error (_("Process record target can't debug inferior in non-stop mode " | |
434 | "(non-stop).")); | |
435 | if (target_async_permitted) | |
436 | error (_("Process record target can't debug inferior in asynchronous " | |
437 | "mode (target-async).")); | |
438 | ||
a97b0ac8 | 439 | if (!gdbarch_process_record_p (target_gdbarch)) |
69d05d38 HZ |
440 | error (_("Process record: the current architecture doesn't support " |
441 | "record function.")); | |
442 | ||
443 | /* Check if record target is already running. */ | |
444 | if (current_target.to_stratum == record_stratum) | |
445 | { | |
446 | if (!nquery | |
447 | (_("Process record target already running, do you want to delete " | |
448 | "the old record log?"))) | |
449 | return; | |
450 | } | |
451 | ||
452 | /*Reset the beneath function pointers. */ | |
453 | record_beneath_to_resume = NULL; | |
454 | record_beneath_to_wait = NULL; | |
455 | record_beneath_to_store_registers = NULL; | |
456 | record_beneath_to_xfer_partial = NULL; | |
457 | record_beneath_to_insert_breakpoint = NULL; | |
458 | record_beneath_to_remove_breakpoint = NULL; | |
459 | ||
460 | /* Set the beneath function pointers. */ | |
461 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
462 | { | |
463 | if (!record_beneath_to_resume) | |
464 | { | |
465 | record_beneath_to_resume = t->to_resume; | |
466 | record_beneath_to_resume_ops = t; | |
467 | } | |
468 | if (!record_beneath_to_wait) | |
469 | { | |
470 | record_beneath_to_wait = t->to_wait; | |
471 | record_beneath_to_wait_ops = t; | |
472 | } | |
473 | if (!record_beneath_to_store_registers) | |
474 | { | |
475 | record_beneath_to_store_registers = t->to_store_registers; | |
476 | record_beneath_to_store_registers_ops = t; | |
477 | } | |
478 | if (!record_beneath_to_xfer_partial) | |
479 | { | |
480 | record_beneath_to_xfer_partial = t->to_xfer_partial; | |
481 | record_beneath_to_xfer_partial_ops = t; | |
482 | } | |
483 | if (!record_beneath_to_insert_breakpoint) | |
484 | record_beneath_to_insert_breakpoint = t->to_insert_breakpoint; | |
485 | if (!record_beneath_to_remove_breakpoint) | |
486 | record_beneath_to_remove_breakpoint = t->to_remove_breakpoint; | |
487 | } | |
488 | if (!record_beneath_to_resume) | |
489 | error (_("Process record can't get to_resume.")); | |
490 | if (!record_beneath_to_wait) | |
491 | error (_("Process record can't get to_wait.")); | |
492 | if (!record_beneath_to_store_registers) | |
493 | error (_("Process record can't get to_store_registers.")); | |
494 | if (!record_beneath_to_xfer_partial) | |
495 | error (_("Process record can't get to_xfer_partial.")); | |
496 | if (!record_beneath_to_insert_breakpoint) | |
497 | error (_("Process record can't get to_insert_breakpoint.")); | |
498 | if (!record_beneath_to_remove_breakpoint) | |
499 | error (_("Process record can't get to_remove_breakpoint.")); | |
500 | ||
501 | push_target (&record_ops); | |
502 | ||
503 | /* Reset */ | |
504 | record_insn_num = 0; | |
505 | record_list = &record_first; | |
506 | record_list->next = NULL; | |
507 | } | |
508 | ||
509 | static void | |
510 | record_close (int quitting) | |
511 | { | |
512 | if (record_debug) | |
513 | fprintf_unfiltered (gdb_stdlog, "Process record: record_close\n"); | |
514 | ||
515 | record_list_release (record_list); | |
516 | } | |
517 | ||
518 | static int record_resume_step = 0; | |
69d05d38 HZ |
519 | static int record_resume_error; |
520 | ||
521 | static void | |
522 | record_resume (struct target_ops *ops, ptid_t ptid, int step, | |
c9e78e0c | 523 | enum target_signal siggnal) |
69d05d38 HZ |
524 | { |
525 | record_resume_step = step; | |
69d05d38 HZ |
526 | |
527 | if (!RECORD_IS_REPLAY) | |
528 | { | |
529 | if (do_record_message (get_current_regcache ())) | |
530 | { | |
531 | record_resume_error = 0; | |
532 | } | |
533 | else | |
534 | { | |
535 | record_resume_error = 1; | |
536 | return; | |
537 | } | |
538 | record_beneath_to_resume (record_beneath_to_resume_ops, ptid, 1, | |
c9e78e0c | 539 | siggnal); |
69d05d38 HZ |
540 | } |
541 | } | |
542 | ||
543 | static int record_get_sig = 0; | |
544 | ||
545 | static void | |
546 | record_sig_handler (int signo) | |
547 | { | |
548 | if (record_debug) | |
549 | fprintf_unfiltered (gdb_stdlog, "Process record: get a signal\n"); | |
550 | ||
551 | /* It will break the running inferior in replay mode. */ | |
552 | record_resume_step = 1; | |
553 | ||
554 | /* It will let record_wait set inferior status to get the signal | |
555 | SIGINT. */ | |
556 | record_get_sig = 1; | |
557 | } | |
558 | ||
559 | static void | |
560 | record_wait_cleanups (void *ignore) | |
561 | { | |
562 | if (execution_direction == EXEC_REVERSE) | |
563 | { | |
564 | if (record_list->next) | |
565 | record_list = record_list->next; | |
566 | } | |
567 | else | |
568 | record_list = record_list->prev; | |
569 | } | |
570 | ||
571 | /* In replay mode, this function examines the recorded log and | |
572 | determines where to stop. */ | |
573 | ||
574 | static ptid_t | |
575 | record_wait (struct target_ops *ops, | |
47608cb1 PA |
576 | ptid_t ptid, struct target_waitstatus *status, |
577 | int options) | |
69d05d38 HZ |
578 | { |
579 | struct cleanup *set_cleanups = record_gdb_operation_disable_set (); | |
580 | ||
581 | if (record_debug) | |
582 | fprintf_unfiltered (gdb_stdlog, | |
583 | "Process record: record_wait " | |
584 | "record_resume_step = %d\n", | |
585 | record_resume_step); | |
586 | ||
587 | if (!RECORD_IS_REPLAY) | |
588 | { | |
589 | if (record_resume_error) | |
590 | { | |
591 | /* If record_resume get error, return directly. */ | |
592 | status->kind = TARGET_WAITKIND_STOPPED; | |
593 | status->value.sig = TARGET_SIGNAL_ABRT; | |
594 | return inferior_ptid; | |
595 | } | |
596 | ||
597 | if (record_resume_step) | |
598 | { | |
599 | /* This is a single step. */ | |
600 | return record_beneath_to_wait (record_beneath_to_wait_ops, | |
90092760 | 601 | ptid, status, options); |
69d05d38 HZ |
602 | } |
603 | else | |
604 | { | |
605 | /* This is not a single step. */ | |
606 | ptid_t ret; | |
607 | CORE_ADDR tmp_pc; | |
608 | ||
609 | while (1) | |
610 | { | |
611 | ret = record_beneath_to_wait (record_beneath_to_wait_ops, | |
90092760 | 612 | ptid, status, options); |
69d05d38 HZ |
613 | |
614 | if (status->kind == TARGET_WAITKIND_STOPPED | |
615 | && status->value.sig == TARGET_SIGNAL_TRAP) | |
616 | { | |
617 | /* Check if there is a breakpoint. */ | |
618 | registers_changed (); | |
fb14de7b | 619 | tmp_pc = regcache_read_pc (get_current_regcache ()); |
69d05d38 HZ |
620 | if (breakpoint_inserted_here_p (tmp_pc)) |
621 | { | |
622 | /* There is a breakpoint. */ | |
623 | CORE_ADDR decr_pc_after_break = | |
624 | gdbarch_decr_pc_after_break | |
625 | (get_regcache_arch (get_current_regcache ())); | |
626 | if (decr_pc_after_break) | |
627 | { | |
628 | regcache_write_pc (get_thread_regcache (ret), | |
629 | tmp_pc + decr_pc_after_break); | |
630 | } | |
631 | } | |
632 | else | |
633 | { | |
634 | /* There is not a breakpoint. */ | |
635 | if (!do_record_message (get_current_regcache ())) | |
636 | { | |
637 | break; | |
638 | } | |
639 | record_beneath_to_resume (record_beneath_to_resume_ops, | |
640 | ptid, 1, | |
88fef440 | 641 | TARGET_SIGNAL_0); |
69d05d38 HZ |
642 | continue; |
643 | } | |
644 | } | |
645 | ||
646 | /* The inferior is broken by a breakpoint or a signal. */ | |
647 | break; | |
648 | } | |
649 | ||
650 | return ret; | |
651 | } | |
652 | } | |
653 | else | |
654 | { | |
655 | struct regcache *regcache = get_current_regcache (); | |
5af949e3 | 656 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
69d05d38 HZ |
657 | int continue_flag = 1; |
658 | int first_record_end = 1; | |
659 | struct cleanup *old_cleanups = make_cleanup (record_wait_cleanups, 0); | |
660 | CORE_ADDR tmp_pc; | |
661 | ||
662 | status->kind = TARGET_WAITKIND_STOPPED; | |
663 | ||
664 | /* Check breakpoint when forward execute. */ | |
665 | if (execution_direction == EXEC_FORWARD) | |
666 | { | |
667 | tmp_pc = regcache_read_pc (regcache); | |
668 | if (breakpoint_inserted_here_p (tmp_pc)) | |
669 | { | |
670 | if (record_debug) | |
671 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 UW |
672 | "Process record: break at %s.\n", |
673 | paddress (gdbarch, tmp_pc)); | |
674 | if (gdbarch_decr_pc_after_break (gdbarch) | |
69d05d38 HZ |
675 | && !record_resume_step) |
676 | regcache_write_pc (regcache, | |
677 | tmp_pc + | |
5af949e3 | 678 | gdbarch_decr_pc_after_break (gdbarch)); |
69d05d38 HZ |
679 | goto replay_out; |
680 | } | |
681 | } | |
682 | ||
683 | record_get_sig = 0; | |
684 | signal (SIGINT, record_sig_handler); | |
685 | /* If GDB is in terminal_inferior mode, it will not get the signal. | |
686 | And in GDB replay mode, GDB doesn't need to be in terminal_inferior | |
687 | mode, because inferior will not executed. | |
688 | Then set it to terminal_ours to make GDB get the signal. */ | |
689 | target_terminal_ours (); | |
690 | ||
691 | /* In EXEC_FORWARD mode, record_list points to the tail of prev | |
692 | instruction. */ | |
693 | if (execution_direction == EXEC_FORWARD && record_list->next) | |
694 | record_list = record_list->next; | |
695 | ||
696 | /* Loop over the record_list, looking for the next place to | |
697 | stop. */ | |
698 | do | |
699 | { | |
700 | /* Check for beginning and end of log. */ | |
701 | if (execution_direction == EXEC_REVERSE | |
702 | && record_list == &record_first) | |
703 | { | |
704 | /* Hit beginning of record log in reverse. */ | |
705 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
706 | break; | |
707 | } | |
708 | if (execution_direction != EXEC_REVERSE && !record_list->next) | |
709 | { | |
710 | /* Hit end of record log going forward. */ | |
711 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
712 | break; | |
713 | } | |
714 | ||
715 | /* Set ptid, register and memory according to record_list. */ | |
716 | if (record_list->type == record_reg) | |
717 | { | |
718 | /* reg */ | |
719 | gdb_byte reg[MAX_REGISTER_SIZE]; | |
720 | if (record_debug > 1) | |
721 | fprintf_unfiltered (gdb_stdlog, | |
722 | "Process record: record_reg %s to " | |
723 | "inferior num = %d.\n", | |
724 | host_address_to_string (record_list), | |
725 | record_list->u.reg.num); | |
726 | regcache_cooked_read (regcache, record_list->u.reg.num, reg); | |
727 | regcache_cooked_write (regcache, record_list->u.reg.num, | |
728 | record_list->u.reg.val); | |
729 | memcpy (record_list->u.reg.val, reg, MAX_REGISTER_SIZE); | |
730 | } | |
731 | else if (record_list->type == record_mem) | |
732 | { | |
733 | /* mem */ | |
afd0cd3f MS |
734 | /* Nothing to do if the entry is flagged not_accessible. */ |
735 | if (!record_list->u.mem.mem_entry_not_accessible) | |
736 | { | |
737 | gdb_byte *mem = alloca (record_list->u.mem.len); | |
738 | if (record_debug > 1) | |
739 | fprintf_unfiltered (gdb_stdlog, | |
740 | "Process record: record_mem %s to " | |
741 | "inferior addr = %s len = %d.\n", | |
742 | host_address_to_string (record_list), | |
743 | paddress (gdbarch, | |
744 | record_list->u.mem.addr), | |
745 | record_list->u.mem.len); | |
746 | ||
747 | if (target_read_memory (record_list->u.mem.addr, mem, | |
748 | record_list->u.mem.len)) | |
749 | { | |
750 | if (execution_direction != EXEC_REVERSE) | |
751 | error (_("Process record: error reading memory at " | |
752 | "addr = %s len = %d."), | |
753 | paddress (gdbarch, record_list->u.mem.addr), | |
754 | record_list->u.mem.len); | |
755 | else | |
756 | /* Read failed -- | |
757 | flag entry as not_accessible. */ | |
758 | record_list->u.mem.mem_entry_not_accessible = 1; | |
759 | } | |
760 | else | |
761 | { | |
762 | if (target_write_memory (record_list->u.mem.addr, | |
763 | record_list->u.mem.val, | |
764 | record_list->u.mem.len)) | |
765 | { | |
766 | if (execution_direction != EXEC_REVERSE) | |
767 | error (_("Process record: error writing memory at " | |
768 | "addr = %s len = %d."), | |
769 | paddress (gdbarch, record_list->u.mem.addr), | |
770 | record_list->u.mem.len); | |
771 | else | |
772 | /* Write failed -- | |
773 | flag entry as not_accessible. */ | |
774 | record_list->u.mem.mem_entry_not_accessible = 1; | |
775 | } | |
776 | else | |
777 | { | |
778 | memcpy (record_list->u.mem.val, mem, | |
779 | record_list->u.mem.len); | |
780 | } | |
781 | } | |
782 | } | |
69d05d38 HZ |
783 | } |
784 | else | |
785 | { | |
786 | if (record_debug > 1) | |
787 | fprintf_unfiltered (gdb_stdlog, | |
788 | "Process record: record_end %s to " | |
789 | "inferior.\n", | |
790 | host_address_to_string (record_list)); | |
791 | ||
792 | if (first_record_end && execution_direction == EXEC_REVERSE) | |
793 | { | |
794 | /* When reverse excute, the first record_end is the part of | |
795 | current instruction. */ | |
796 | first_record_end = 0; | |
797 | } | |
798 | else | |
799 | { | |
800 | /* In EXEC_REVERSE mode, this is the record_end of prev | |
801 | instruction. | |
802 | In EXEC_FORWARD mode, this is the record_end of current | |
803 | instruction. */ | |
804 | /* step */ | |
805 | if (record_resume_step) | |
806 | { | |
807 | if (record_debug > 1) | |
808 | fprintf_unfiltered (gdb_stdlog, | |
809 | "Process record: step.\n"); | |
810 | continue_flag = 0; | |
811 | } | |
812 | ||
813 | /* check breakpoint */ | |
814 | tmp_pc = regcache_read_pc (regcache); | |
815 | if (breakpoint_inserted_here_p (tmp_pc)) | |
816 | { | |
817 | if (record_debug) | |
818 | fprintf_unfiltered (gdb_stdlog, | |
819 | "Process record: break " | |
5af949e3 UW |
820 | "at %s.\n", |
821 | paddress (gdbarch, tmp_pc)); | |
822 | if (gdbarch_decr_pc_after_break (gdbarch) | |
69d05d38 HZ |
823 | && execution_direction == EXEC_FORWARD |
824 | && !record_resume_step) | |
825 | regcache_write_pc (regcache, | |
826 | tmp_pc + | |
5af949e3 | 827 | gdbarch_decr_pc_after_break (gdbarch)); |
69d05d38 HZ |
828 | continue_flag = 0; |
829 | } | |
830 | } | |
831 | } | |
832 | ||
833 | if (continue_flag) | |
834 | { | |
835 | if (execution_direction == EXEC_REVERSE) | |
836 | { | |
837 | if (record_list->prev) | |
838 | record_list = record_list->prev; | |
839 | } | |
840 | else | |
841 | { | |
842 | if (record_list->next) | |
843 | record_list = record_list->next; | |
844 | } | |
845 | } | |
846 | } | |
847 | while (continue_flag); | |
848 | ||
849 | signal (SIGINT, handle_sigint); | |
850 | ||
851 | replay_out: | |
852 | if (record_get_sig) | |
853 | status->value.sig = TARGET_SIGNAL_INT; | |
854 | else | |
855 | status->value.sig = TARGET_SIGNAL_TRAP; | |
856 | ||
857 | discard_cleanups (old_cleanups); | |
858 | } | |
859 | ||
860 | do_cleanups (set_cleanups); | |
861 | return inferior_ptid; | |
862 | } | |
863 | ||
864 | static void | |
865 | record_disconnect (struct target_ops *target, char *args, int from_tty) | |
866 | { | |
867 | if (record_debug) | |
868 | fprintf_unfiltered (gdb_stdlog, "Process record: record_disconnect\n"); | |
869 | ||
870 | unpush_target (&record_ops); | |
871 | target_disconnect (args, from_tty); | |
872 | } | |
873 | ||
874 | static void | |
875 | record_detach (struct target_ops *ops, char *args, int from_tty) | |
876 | { | |
877 | if (record_debug) | |
878 | fprintf_unfiltered (gdb_stdlog, "Process record: record_detach\n"); | |
879 | ||
880 | unpush_target (&record_ops); | |
881 | target_detach (args, from_tty); | |
882 | } | |
883 | ||
884 | static void | |
885 | record_mourn_inferior (struct target_ops *ops) | |
886 | { | |
887 | if (record_debug) | |
888 | fprintf_unfiltered (gdb_stdlog, "Process record: " | |
889 | "record_mourn_inferior\n"); | |
890 | ||
891 | unpush_target (&record_ops); | |
892 | target_mourn_inferior (); | |
893 | } | |
894 | ||
895 | /* Close process record target before killing the inferior process. */ | |
896 | ||
897 | static void | |
898 | record_kill (struct target_ops *ops) | |
899 | { | |
900 | if (record_debug) | |
901 | fprintf_unfiltered (gdb_stdlog, "Process record: record_kill\n"); | |
902 | ||
903 | unpush_target (&record_ops); | |
904 | target_kill (); | |
905 | } | |
906 | ||
907 | /* Record registers change (by user or by GDB) to list as an instruction. */ | |
908 | ||
909 | static void | |
910 | record_registers_change (struct regcache *regcache, int regnum) | |
911 | { | |
912 | /* Check record_insn_num. */ | |
913 | record_check_insn_num (0); | |
914 | ||
915 | record_arch_list_head = NULL; | |
916 | record_arch_list_tail = NULL; | |
917 | ||
918 | if (regnum < 0) | |
919 | { | |
920 | int i; | |
921 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
922 | { | |
923 | if (record_arch_list_add_reg (regcache, i)) | |
924 | { | |
925 | record_list_release (record_arch_list_tail); | |
926 | error (_("Process record: failed to record execution log.")); | |
927 | } | |
928 | } | |
929 | } | |
930 | else | |
931 | { | |
932 | if (record_arch_list_add_reg (regcache, regnum)) | |
933 | { | |
934 | record_list_release (record_arch_list_tail); | |
935 | error (_("Process record: failed to record execution log.")); | |
936 | } | |
937 | } | |
938 | if (record_arch_list_add_end ()) | |
939 | { | |
940 | record_list_release (record_arch_list_tail); | |
941 | error (_("Process record: failed to record execution log.")); | |
942 | } | |
943 | record_list->next = record_arch_list_head; | |
944 | record_arch_list_head->prev = record_list; | |
945 | record_list = record_arch_list_tail; | |
946 | ||
947 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
948 | record_list_release_first (); | |
949 | else | |
950 | record_insn_num++; | |
951 | } | |
952 | ||
953 | static void | |
954 | record_store_registers (struct target_ops *ops, struct regcache *regcache, | |
955 | int regno) | |
956 | { | |
957 | if (!record_gdb_operation_disable) | |
958 | { | |
959 | if (RECORD_IS_REPLAY) | |
960 | { | |
961 | int n; | |
69d05d38 HZ |
962 | |
963 | /* Let user choose if he wants to write register or not. */ | |
964 | if (regno < 0) | |
965 | n = | |
966 | nquery (_("Because GDB is in replay mode, changing the " | |
967 | "value of a register will make the execution " | |
968 | "log unusable from this point onward. " | |
969 | "Change all registers?")); | |
970 | else | |
971 | n = | |
972 | nquery (_("Because GDB is in replay mode, changing the value " | |
973 | "of a register will make the execution log unusable " | |
974 | "from this point onward. Change register %s?"), | |
975 | gdbarch_register_name (get_regcache_arch (regcache), | |
976 | regno)); | |
977 | ||
978 | if (!n) | |
979 | { | |
980 | /* Invalidate the value of regcache that was set in function | |
981 | "regcache_raw_write". */ | |
982 | if (regno < 0) | |
983 | { | |
984 | int i; | |
985 | for (i = 0; | |
986 | i < gdbarch_num_regs (get_regcache_arch (regcache)); | |
987 | i++) | |
988 | regcache_invalidate (regcache, i); | |
989 | } | |
990 | else | |
991 | regcache_invalidate (regcache, regno); | |
992 | ||
993 | error (_("Process record canceled the operation.")); | |
994 | } | |
995 | ||
996 | /* Destroy the record from here forward. */ | |
997 | record_list_release_next (); | |
998 | } | |
999 | ||
1000 | record_registers_change (regcache, regno); | |
1001 | } | |
1002 | record_beneath_to_store_registers (record_beneath_to_store_registers_ops, | |
1003 | regcache, regno); | |
1004 | } | |
1005 | ||
1006 | /* Behavior is conditional on RECORD_IS_REPLAY. | |
1007 | In replay mode, we cannot write memory unles we are willing to | |
1008 | invalidate the record/replay log from this point forward. */ | |
1009 | ||
1010 | static LONGEST | |
1011 | record_xfer_partial (struct target_ops *ops, enum target_object object, | |
1012 | const char *annex, gdb_byte *readbuf, | |
1013 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1014 | { | |
1015 | if (!record_gdb_operation_disable | |
1016 | && (object == TARGET_OBJECT_MEMORY | |
1017 | || object == TARGET_OBJECT_RAW_MEMORY) && writebuf) | |
1018 | { | |
1019 | if (RECORD_IS_REPLAY) | |
1020 | { | |
1021 | /* Let user choose if he wants to write memory or not. */ | |
1022 | if (!nquery (_("Because GDB is in replay mode, writing to memory " | |
1023 | "will make the execution log unusable from this " | |
5af949e3 UW |
1024 | "point onward. Write memory at address %s?"), |
1025 | paddress (target_gdbarch, offset))) | |
9a9dc473 | 1026 | error (_("Process record canceled the operation.")); |
69d05d38 HZ |
1027 | |
1028 | /* Destroy the record from here forward. */ | |
1029 | record_list_release_next (); | |
1030 | } | |
1031 | ||
1032 | /* Check record_insn_num */ | |
1033 | record_check_insn_num (0); | |
1034 | ||
1035 | /* Record registers change to list as an instruction. */ | |
1036 | record_arch_list_head = NULL; | |
1037 | record_arch_list_tail = NULL; | |
1038 | if (record_arch_list_add_mem (offset, len)) | |
1039 | { | |
1040 | record_list_release (record_arch_list_tail); | |
1041 | if (record_debug) | |
1042 | fprintf_unfiltered (gdb_stdlog, | |
1043 | _("Process record: failed to record " | |
1044 | "execution log.")); | |
1045 | return -1; | |
1046 | } | |
1047 | if (record_arch_list_add_end ()) | |
1048 | { | |
1049 | record_list_release (record_arch_list_tail); | |
1050 | if (record_debug) | |
1051 | fprintf_unfiltered (gdb_stdlog, | |
1052 | _("Process record: failed to record " | |
1053 | "execution log.")); | |
1054 | return -1; | |
1055 | } | |
1056 | record_list->next = record_arch_list_head; | |
1057 | record_arch_list_head->prev = record_list; | |
1058 | record_list = record_arch_list_tail; | |
1059 | ||
1060 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
1061 | record_list_release_first (); | |
1062 | else | |
1063 | record_insn_num++; | |
1064 | } | |
1065 | ||
1066 | return record_beneath_to_xfer_partial (record_beneath_to_xfer_partial_ops, | |
1067 | object, annex, readbuf, writebuf, | |
1068 | offset, len); | |
1069 | } | |
1070 | ||
1071 | /* Behavior is conditional on RECORD_IS_REPLAY. | |
1072 | We will not actually insert or remove breakpoints when replaying, | |
1073 | nor when recording. */ | |
1074 | ||
1075 | static int | |
a6d9a66e UW |
1076 | record_insert_breakpoint (struct gdbarch *gdbarch, |
1077 | struct bp_target_info *bp_tgt) | |
69d05d38 HZ |
1078 | { |
1079 | if (!RECORD_IS_REPLAY) | |
1080 | { | |
1081 | struct cleanup *old_cleanups = record_gdb_operation_disable_set (); | |
a6d9a66e | 1082 | int ret = record_beneath_to_insert_breakpoint (gdbarch, bp_tgt); |
69d05d38 HZ |
1083 | |
1084 | do_cleanups (old_cleanups); | |
1085 | ||
1086 | return ret; | |
1087 | } | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | static int | |
a6d9a66e UW |
1093 | record_remove_breakpoint (struct gdbarch *gdbarch, |
1094 | struct bp_target_info *bp_tgt) | |
69d05d38 HZ |
1095 | { |
1096 | if (!RECORD_IS_REPLAY) | |
1097 | { | |
1098 | struct cleanup *old_cleanups = record_gdb_operation_disable_set (); | |
a6d9a66e | 1099 | int ret = record_beneath_to_remove_breakpoint (gdbarch, bp_tgt); |
69d05d38 HZ |
1100 | |
1101 | do_cleanups (old_cleanups); | |
1102 | ||
1103 | return ret; | |
1104 | } | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | static int | |
1110 | record_can_execute_reverse (void) | |
1111 | { | |
1112 | return 1; | |
1113 | } | |
1114 | ||
1115 | static void | |
1116 | init_record_ops (void) | |
1117 | { | |
1118 | record_ops.to_shortname = "record"; | |
1119 | record_ops.to_longname = "Process record and replay target"; | |
1120 | record_ops.to_doc = | |
1121 | "Log program while executing and replay execution from log."; | |
1122 | record_ops.to_open = record_open; | |
1123 | record_ops.to_close = record_close; | |
1124 | record_ops.to_resume = record_resume; | |
1125 | record_ops.to_wait = record_wait; | |
1126 | record_ops.to_disconnect = record_disconnect; | |
1127 | record_ops.to_detach = record_detach; | |
1128 | record_ops.to_mourn_inferior = record_mourn_inferior; | |
1129 | record_ops.to_kill = record_kill; | |
1130 | record_ops.to_create_inferior = find_default_create_inferior; | |
1131 | record_ops.to_store_registers = record_store_registers; | |
1132 | record_ops.to_xfer_partial = record_xfer_partial; | |
1133 | record_ops.to_insert_breakpoint = record_insert_breakpoint; | |
1134 | record_ops.to_remove_breakpoint = record_remove_breakpoint; | |
1135 | record_ops.to_can_execute_reverse = record_can_execute_reverse; | |
1136 | record_ops.to_stratum = record_stratum; | |
1137 | record_ops.to_magic = OPS_MAGIC; | |
1138 | } | |
1139 | ||
1140 | static void | |
1141 | show_record_debug (struct ui_file *file, int from_tty, | |
1142 | struct cmd_list_element *c, const char *value) | |
1143 | { | |
1144 | fprintf_filtered (file, _("Debugging of process record target is %s.\n"), | |
1145 | value); | |
1146 | } | |
1147 | ||
1148 | /* Alias for "target record". */ | |
1149 | ||
1150 | static void | |
1151 | cmd_record_start (char *args, int from_tty) | |
1152 | { | |
1153 | execute_command ("target record", from_tty); | |
1154 | } | |
1155 | ||
1156 | /* Truncate the record log from the present point | |
1157 | of replay until the end. */ | |
1158 | ||
1159 | static void | |
1160 | cmd_record_delete (char *args, int from_tty) | |
1161 | { | |
1162 | if (current_target.to_stratum == record_stratum) | |
1163 | { | |
1164 | if (RECORD_IS_REPLAY) | |
1165 | { | |
1166 | if (!from_tty || query (_("Delete the log from this point forward " | |
1167 | "and begin to record the running message " | |
1168 | "at current PC?"))) | |
1169 | record_list_release_next (); | |
1170 | } | |
1171 | else | |
1172 | printf_unfiltered (_("Already at end of record list.\n")); | |
1173 | ||
1174 | } | |
1175 | else | |
1176 | printf_unfiltered (_("Process record is not started.\n")); | |
1177 | } | |
1178 | ||
1179 | /* Implement the "stoprecord" command. */ | |
1180 | ||
1181 | static void | |
1182 | cmd_record_stop (char *args, int from_tty) | |
1183 | { | |
1184 | if (current_target.to_stratum == record_stratum) | |
1185 | { | |
1186 | if (!record_list || !from_tty || query (_("Delete recorded log and " | |
1187 | "stop recording?"))) | |
1188 | unpush_target (&record_ops); | |
1189 | } | |
1190 | else | |
1191 | printf_unfiltered (_("Process record is not started.\n")); | |
1192 | } | |
1193 | ||
1194 | /* Set upper limit of record log size. */ | |
1195 | ||
1196 | static void | |
1197 | set_record_insn_max_num (char *args, int from_tty, struct cmd_list_element *c) | |
1198 | { | |
1199 | if (record_insn_num > record_insn_max_num && record_insn_max_num) | |
1200 | { | |
1201 | printf_unfiltered (_("Record instructions number is bigger than " | |
1202 | "record instructions max number. Auto delete " | |
1203 | "the first ones?\n")); | |
1204 | ||
1205 | while (record_insn_num > record_insn_max_num) | |
1206 | record_list_release_first (); | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* Print the current index into the record log (number of insns recorded | |
1211 | so far). */ | |
1212 | ||
1213 | static void | |
1214 | show_record_insn_number (char *ignore, int from_tty) | |
1215 | { | |
1216 | printf_unfiltered (_("Record instruction number is %d.\n"), | |
1217 | record_insn_num); | |
1218 | } | |
1219 | ||
1220 | static struct cmd_list_element *record_cmdlist, *set_record_cmdlist, | |
1221 | *show_record_cmdlist, *info_record_cmdlist; | |
1222 | ||
1223 | static void | |
1224 | set_record_command (char *args, int from_tty) | |
1225 | { | |
1226 | printf_unfiltered (_("\ | |
1227 | \"set record\" must be followed by an apporpriate subcommand.\n")); | |
1228 | help_list (set_record_cmdlist, "set record ", all_commands, gdb_stdout); | |
1229 | } | |
1230 | ||
1231 | static void | |
1232 | show_record_command (char *args, int from_tty) | |
1233 | { | |
1234 | cmd_show_list (show_record_cmdlist, from_tty, ""); | |
1235 | } | |
1236 | ||
1237 | static void | |
1238 | info_record_command (char *args, int from_tty) | |
1239 | { | |
1240 | cmd_show_list (info_record_cmdlist, from_tty, ""); | |
1241 | } | |
1242 | ||
1243 | void | |
1244 | _initialize_record (void) | |
1245 | { | |
1246 | /* Init record_first. */ | |
1247 | record_first.prev = NULL; | |
1248 | record_first.next = NULL; | |
1249 | record_first.type = record_end; | |
1250 | ||
1251 | init_record_ops (); | |
1252 | add_target (&record_ops); | |
1253 | ||
1254 | add_setshow_zinteger_cmd ("record", no_class, &record_debug, | |
1255 | _("Set debugging of record/replay feature."), | |
1256 | _("Show debugging of record/replay feature."), | |
1257 | _("When enabled, debugging output for " | |
1258 | "record/replay feature is displayed."), | |
1259 | NULL, show_record_debug, &setdebuglist, | |
1260 | &showdebuglist); | |
1261 | ||
1262 | add_prefix_cmd ("record", class_obscure, cmd_record_start, | |
1263 | _("Abbreviated form of \"target record\" command."), | |
1264 | &record_cmdlist, "record ", 0, &cmdlist); | |
1265 | add_com_alias ("rec", "record", class_obscure, 1); | |
1266 | add_prefix_cmd ("record", class_support, set_record_command, | |
1267 | _("Set record options"), &set_record_cmdlist, | |
1268 | "set record ", 0, &setlist); | |
1269 | add_alias_cmd ("rec", "record", class_obscure, 1, &setlist); | |
1270 | add_prefix_cmd ("record", class_support, show_record_command, | |
1271 | _("Show record options"), &show_record_cmdlist, | |
1272 | "show record ", 0, &showlist); | |
1273 | add_alias_cmd ("rec", "record", class_obscure, 1, &showlist); | |
1274 | add_prefix_cmd ("record", class_support, info_record_command, | |
1275 | _("Info record options"), &info_record_cmdlist, | |
1276 | "info record ", 0, &infolist); | |
1277 | add_alias_cmd ("rec", "record", class_obscure, 1, &infolist); | |
1278 | ||
1279 | ||
1280 | add_cmd ("delete", class_obscure, cmd_record_delete, | |
1281 | _("Delete the rest of execution log and start recording it anew."), | |
1282 | &record_cmdlist); | |
1283 | add_alias_cmd ("d", "delete", class_obscure, 1, &record_cmdlist); | |
1284 | add_alias_cmd ("del", "delete", class_obscure, 1, &record_cmdlist); | |
1285 | ||
1286 | add_cmd ("stop", class_obscure, cmd_record_stop, | |
1287 | _("Stop the record/replay target."), | |
1288 | &record_cmdlist); | |
1289 | add_alias_cmd ("s", "stop", class_obscure, 1, &record_cmdlist); | |
1290 | ||
1291 | /* Record instructions number limit command. */ | |
1292 | add_setshow_boolean_cmd ("stop-at-limit", no_class, | |
fda458ee | 1293 | &record_stop_at_limit, _("\ |
299a410e EZ |
1294 | Set whether record/replay stops when record/replay buffer becomes full."), _("\ |
1295 | Show whether record/replay stops when record/replay buffer becomes full."), _("\ | |
1296 | Default is ON.\n\ | |
1297 | When ON, if the record/replay buffer becomes full, ask user what to do.\n\ | |
1298 | When OFF, if the record/replay buffer becomes full,\n\ | |
1299 | delete the oldest recorded instruction to make room for each new one."), | |
fda458ee MS |
1300 | NULL, NULL, |
1301 | &set_record_cmdlist, &show_record_cmdlist); | |
69d05d38 HZ |
1302 | add_setshow_zinteger_cmd ("insn-number-max", no_class, |
1303 | &record_insn_max_num, | |
1304 | _("Set record/replay buffer limit."), | |
299a410e EZ |
1305 | _("Show record/replay buffer limit."), _("\ |
1306 | Set the maximum number of instructions to be stored in the\n\ | |
1307 | record/replay buffer. Zero means unlimited. Default is 200000."), | |
69d05d38 HZ |
1308 | set_record_insn_max_num, |
1309 | NULL, &set_record_cmdlist, &show_record_cmdlist); | |
1310 | add_cmd ("insn-number", class_obscure, show_record_insn_number, | |
fda458ee MS |
1311 | _("Show the current number of instructions in the " |
1312 | "record/replay buffer."), &info_record_cmdlist); | |
69d05d38 | 1313 | } |