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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 | ||
35 | /* These are the core struct of record function. | |
36 | ||
37 | An record_entry is a record of the value change of a register | |
38 | ("record_reg") or a part of memory ("record_mem"). And each | |
39 | instruction must has a struct record_entry ("record_end") that points out this | |
40 | is the last struct record_entry of this instruction. | |
41 | ||
42 | Each struct record_entry is linked to "record_list" by "prev" and "next". */ | |
43 | ||
44 | struct record_reg_entry | |
45 | { | |
46 | int num; | |
47 | gdb_byte *val; | |
48 | }; | |
49 | ||
50 | struct record_mem_entry | |
51 | { | |
52 | CORE_ADDR addr; | |
53 | int len; | |
afd0cd3f MS |
54 | /* Set this flag if target memory for this entry |
55 | can no longer be accessed. */ | |
56 | int mem_entry_not_accessible; | |
69d05d38 HZ |
57 | gdb_byte *val; |
58 | }; | |
59 | ||
60 | enum record_type | |
61 | { | |
62 | record_end = 0, | |
63 | record_reg, | |
64 | record_mem | |
65 | }; | |
66 | ||
67 | struct record_entry | |
68 | { | |
69 | struct record_entry *prev; | |
70 | struct record_entry *next; | |
71 | enum record_type type; | |
72 | union | |
73 | { | |
74 | /* reg */ | |
75 | struct record_reg_entry reg; | |
76 | /* mem */ | |
77 | struct record_mem_entry mem; | |
78 | } u; | |
79 | }; | |
80 | ||
81 | /* This is the debug switch for process record. */ | |
82 | int record_debug = 0; | |
83 | ||
84 | /* These list is for execution log. */ | |
85 | static struct record_entry record_first; | |
86 | static struct record_entry *record_list = &record_first; | |
87 | static struct record_entry *record_arch_list_head = NULL; | |
88 | static struct record_entry *record_arch_list_tail = NULL; | |
89 | ||
90 | /* 1 ask user. 0 auto delete the last struct record_entry. */ | |
91 | static int record_stop_at_limit = 1; | |
92 | static int record_insn_max_num = DEFAULT_RECORD_INSN_MAX_NUM; | |
93 | static int record_insn_num = 0; | |
94 | ||
95 | /* The target_ops of process record. */ | |
96 | static struct target_ops record_ops; | |
97 | ||
98 | /* The beneath function pointers. */ | |
99 | static struct target_ops *record_beneath_to_resume_ops; | |
100 | static void (*record_beneath_to_resume) (struct target_ops *, ptid_t, int, | |
101 | enum target_signal); | |
102 | static struct target_ops *record_beneath_to_wait_ops; | |
103 | static ptid_t (*record_beneath_to_wait) (struct target_ops *, ptid_t, | |
47608cb1 PA |
104 | struct target_waitstatus *, |
105 | int); | |
69d05d38 HZ |
106 | static struct target_ops *record_beneath_to_store_registers_ops; |
107 | static void (*record_beneath_to_store_registers) (struct target_ops *, | |
108 | struct regcache *, | |
109 | int regno); | |
110 | static struct target_ops *record_beneath_to_xfer_partial_ops; | |
111 | static LONGEST (*record_beneath_to_xfer_partial) (struct target_ops *ops, | |
112 | enum target_object object, | |
113 | const char *annex, | |
114 | gdb_byte *readbuf, | |
115 | const gdb_byte *writebuf, | |
116 | ULONGEST offset, | |
117 | LONGEST len); | |
a6d9a66e UW |
118 | static int (*record_beneath_to_insert_breakpoint) (struct gdbarch *, |
119 | struct bp_target_info *); | |
120 | static int (*record_beneath_to_remove_breakpoint) (struct gdbarch *, | |
121 | struct bp_target_info *); | |
69d05d38 HZ |
122 | |
123 | static void | |
124 | record_list_release (struct record_entry *rec) | |
125 | { | |
126 | struct record_entry *tmp; | |
127 | ||
128 | if (!rec) | |
129 | return; | |
130 | ||
131 | while (rec->next) | |
132 | { | |
133 | rec = rec->next; | |
134 | } | |
135 | ||
136 | while (rec->prev) | |
137 | { | |
138 | tmp = rec; | |
139 | rec = rec->prev; | |
140 | if (tmp->type == record_reg) | |
141 | xfree (tmp->u.reg.val); | |
142 | else if (tmp->type == record_mem) | |
143 | xfree (tmp->u.mem.val); | |
144 | xfree (tmp); | |
145 | } | |
146 | ||
147 | if (rec != &record_first) | |
148 | xfree (rec); | |
149 | } | |
150 | ||
151 | static void | |
152 | record_list_release_next (void) | |
153 | { | |
154 | struct record_entry *rec = record_list; | |
155 | struct record_entry *tmp = rec->next; | |
156 | rec->next = NULL; | |
157 | while (tmp) | |
158 | { | |
159 | rec = tmp->next; | |
12b1a979 | 160 | if (tmp->type == record_end) |
69d05d38 HZ |
161 | record_insn_num--; |
162 | else if (tmp->type == record_reg) | |
163 | xfree (tmp->u.reg.val); | |
164 | else if (tmp->type == record_mem) | |
165 | xfree (tmp->u.mem.val); | |
166 | xfree (tmp); | |
167 | tmp = rec; | |
168 | } | |
169 | } | |
170 | ||
171 | static void | |
172 | record_list_release_first (void) | |
173 | { | |
174 | struct record_entry *tmp = NULL; | |
175 | enum record_type type; | |
176 | ||
177 | if (!record_first.next) | |
178 | return; | |
179 | ||
180 | while (1) | |
181 | { | |
182 | type = record_first.next->type; | |
183 | ||
184 | if (type == record_reg) | |
185 | xfree (record_first.next->u.reg.val); | |
186 | else if (type == record_mem) | |
187 | xfree (record_first.next->u.mem.val); | |
188 | tmp = record_first.next; | |
189 | record_first.next = tmp->next; | |
190 | xfree (tmp); | |
191 | ||
192 | if (!record_first.next) | |
193 | { | |
194 | gdb_assert (record_insn_num == 1); | |
195 | break; | |
196 | } | |
197 | ||
198 | record_first.next->prev = &record_first; | |
199 | ||
200 | if (type == record_end) | |
201 | break; | |
202 | } | |
203 | ||
204 | record_insn_num--; | |
205 | } | |
206 | ||
207 | /* Add a struct record_entry to record_arch_list. */ | |
208 | ||
209 | static void | |
210 | record_arch_list_add (struct record_entry *rec) | |
211 | { | |
212 | if (record_debug > 1) | |
213 | fprintf_unfiltered (gdb_stdlog, | |
214 | "Process record: record_arch_list_add %s.\n", | |
215 | host_address_to_string (rec)); | |
216 | ||
217 | if (record_arch_list_tail) | |
218 | { | |
219 | record_arch_list_tail->next = rec; | |
220 | rec->prev = record_arch_list_tail; | |
221 | record_arch_list_tail = rec; | |
222 | } | |
223 | else | |
224 | { | |
225 | record_arch_list_head = rec; | |
226 | record_arch_list_tail = rec; | |
227 | } | |
228 | } | |
229 | ||
230 | /* Record the value of a register NUM to record_arch_list. */ | |
231 | ||
232 | int | |
233 | record_arch_list_add_reg (struct regcache *regcache, int num) | |
234 | { | |
235 | struct record_entry *rec; | |
236 | ||
237 | if (record_debug > 1) | |
238 | fprintf_unfiltered (gdb_stdlog, | |
239 | "Process record: add register num = %d to " | |
240 | "record list.\n", | |
241 | num); | |
242 | ||
243 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
244 | rec->u.reg.val = (gdb_byte *) xmalloc (MAX_REGISTER_SIZE); | |
245 | rec->prev = NULL; | |
246 | rec->next = NULL; | |
247 | rec->type = record_reg; | |
248 | rec->u.reg.num = num; | |
249 | ||
250 | regcache_raw_read (regcache, num, rec->u.reg.val); | |
251 | ||
252 | record_arch_list_add (rec); | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | /* Record the value of a region of memory whose address is ADDR and | |
258 | length is LEN to record_arch_list. */ | |
259 | ||
260 | int | |
261 | record_arch_list_add_mem (CORE_ADDR addr, int len) | |
262 | { | |
263 | struct record_entry *rec; | |
264 | ||
265 | if (record_debug > 1) | |
266 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 | 267 | "Process record: add mem addr = %s len = %d to " |
69d05d38 | 268 | "record list.\n", |
5af949e3 | 269 | paddress (target_gdbarch, addr), len); |
69d05d38 HZ |
270 | |
271 | if (!addr) | |
272 | return 0; | |
273 | ||
274 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
275 | rec->u.mem.val = (gdb_byte *) xmalloc (len); | |
276 | rec->prev = NULL; | |
277 | rec->next = NULL; | |
278 | rec->type = record_mem; | |
279 | rec->u.mem.addr = addr; | |
280 | rec->u.mem.len = len; | |
afd0cd3f | 281 | rec->u.mem.mem_entry_not_accessible = 0; |
69d05d38 HZ |
282 | |
283 | if (target_read_memory (addr, rec->u.mem.val, len)) | |
284 | { | |
285 | if (record_debug) | |
286 | fprintf_unfiltered (gdb_stdlog, | |
287 | "Process record: error reading memory at " | |
5af949e3 UW |
288 | "addr = %s len = %d.\n", |
289 | paddress (target_gdbarch, addr), len); | |
69d05d38 HZ |
290 | xfree (rec->u.mem.val); |
291 | xfree (rec); | |
292 | return -1; | |
293 | } | |
294 | ||
295 | record_arch_list_add (rec); | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | /* Add a record_end type struct record_entry to record_arch_list. */ | |
301 | ||
302 | int | |
303 | record_arch_list_add_end (void) | |
304 | { | |
305 | struct record_entry *rec; | |
306 | ||
307 | if (record_debug > 1) | |
308 | fprintf_unfiltered (gdb_stdlog, | |
309 | "Process record: add end to arch list.\n"); | |
310 | ||
311 | rec = (struct record_entry *) xmalloc (sizeof (struct record_entry)); | |
312 | rec->prev = NULL; | |
313 | rec->next = NULL; | |
314 | rec->type = record_end; | |
315 | ||
316 | record_arch_list_add (rec); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static void | |
322 | record_check_insn_num (int set_terminal) | |
323 | { | |
324 | if (record_insn_max_num) | |
325 | { | |
326 | gdb_assert (record_insn_num <= record_insn_max_num); | |
327 | if (record_insn_num == record_insn_max_num) | |
328 | { | |
329 | /* Ask user what to do. */ | |
330 | if (record_stop_at_limit) | |
331 | { | |
332 | int q; | |
333 | if (set_terminal) | |
334 | target_terminal_ours (); | |
335 | q = yquery (_("Do you want to auto delete previous execution " | |
336 | "log entries when record/replay buffer becomes " | |
337 | "full (record stop-at-limit)?")); | |
338 | if (set_terminal) | |
339 | target_terminal_inferior (); | |
340 | if (q) | |
341 | record_stop_at_limit = 0; | |
342 | else | |
343 | error (_("Process record: inferior program stopped.")); | |
344 | } | |
345 | } | |
346 | } | |
347 | } | |
348 | ||
349 | /* Before inferior step (when GDB record the running message, inferior | |
350 | only can step), GDB will call this function to record the values to | |
351 | record_list. This function will call gdbarch_process_record to | |
352 | record the running message of inferior and set them to | |
353 | record_arch_list, and add it to record_list. */ | |
354 | ||
355 | static void | |
356 | record_message_cleanups (void *ignore) | |
357 | { | |
358 | record_list_release (record_arch_list_tail); | |
359 | } | |
360 | ||
361 | static int | |
362 | record_message (void *args) | |
363 | { | |
364 | int ret; | |
365 | struct regcache *regcache = args; | |
366 | struct cleanup *old_cleanups = make_cleanup (record_message_cleanups, 0); | |
367 | ||
368 | record_arch_list_head = NULL; | |
369 | record_arch_list_tail = NULL; | |
370 | ||
371 | /* Check record_insn_num. */ | |
372 | record_check_insn_num (1); | |
373 | ||
374 | ret = gdbarch_process_record (get_regcache_arch (regcache), | |
375 | regcache, | |
376 | regcache_read_pc (regcache)); | |
377 | if (ret > 0) | |
378 | error (_("Process record: inferior program stopped.")); | |
379 | if (ret < 0) | |
380 | error (_("Process record: failed to record execution log.")); | |
381 | ||
382 | discard_cleanups (old_cleanups); | |
383 | ||
384 | record_list->next = record_arch_list_head; | |
385 | record_arch_list_head->prev = record_list; | |
386 | record_list = record_arch_list_tail; | |
387 | ||
388 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
389 | record_list_release_first (); | |
390 | else | |
391 | record_insn_num++; | |
392 | ||
393 | return 1; | |
394 | } | |
395 | ||
396 | static int | |
397 | do_record_message (struct regcache *regcache) | |
398 | { | |
399 | return catch_errors (record_message, regcache, NULL, RETURN_MASK_ALL); | |
400 | } | |
401 | ||
402 | /* Set to 1 if record_store_registers and record_xfer_partial | |
403 | doesn't need record. */ | |
404 | ||
405 | static int record_gdb_operation_disable = 0; | |
406 | ||
407 | struct cleanup * | |
408 | record_gdb_operation_disable_set (void) | |
409 | { | |
410 | struct cleanup *old_cleanups = NULL; | |
411 | ||
412 | old_cleanups = | |
413 | make_cleanup_restore_integer (&record_gdb_operation_disable); | |
414 | record_gdb_operation_disable = 1; | |
415 | ||
416 | return old_cleanups; | |
417 | } | |
418 | ||
419 | static void | |
420 | record_open (char *name, int from_tty) | |
421 | { | |
422 | struct target_ops *t; | |
423 | ||
424 | if (record_debug) | |
425 | fprintf_unfiltered (gdb_stdlog, "Process record: record_open\n"); | |
426 | ||
427 | /* check exec */ | |
428 | if (!target_has_execution) | |
429 | error (_("Process record: the program is not being run.")); | |
430 | if (non_stop) | |
431 | error (_("Process record target can't debug inferior in non-stop mode " | |
432 | "(non-stop).")); | |
433 | if (target_async_permitted) | |
434 | error (_("Process record target can't debug inferior in asynchronous " | |
435 | "mode (target-async).")); | |
436 | ||
a97b0ac8 | 437 | if (!gdbarch_process_record_p (target_gdbarch)) |
69d05d38 HZ |
438 | error (_("Process record: the current architecture doesn't support " |
439 | "record function.")); | |
440 | ||
441 | /* Check if record target is already running. */ | |
442 | if (current_target.to_stratum == record_stratum) | |
443 | { | |
444 | if (!nquery | |
445 | (_("Process record target already running, do you want to delete " | |
446 | "the old record log?"))) | |
447 | return; | |
448 | } | |
449 | ||
450 | /*Reset the beneath function pointers. */ | |
451 | record_beneath_to_resume = NULL; | |
452 | record_beneath_to_wait = NULL; | |
453 | record_beneath_to_store_registers = NULL; | |
454 | record_beneath_to_xfer_partial = NULL; | |
455 | record_beneath_to_insert_breakpoint = NULL; | |
456 | record_beneath_to_remove_breakpoint = NULL; | |
457 | ||
458 | /* Set the beneath function pointers. */ | |
459 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
460 | { | |
461 | if (!record_beneath_to_resume) | |
462 | { | |
463 | record_beneath_to_resume = t->to_resume; | |
464 | record_beneath_to_resume_ops = t; | |
465 | } | |
466 | if (!record_beneath_to_wait) | |
467 | { | |
468 | record_beneath_to_wait = t->to_wait; | |
469 | record_beneath_to_wait_ops = t; | |
470 | } | |
471 | if (!record_beneath_to_store_registers) | |
472 | { | |
473 | record_beneath_to_store_registers = t->to_store_registers; | |
474 | record_beneath_to_store_registers_ops = t; | |
475 | } | |
476 | if (!record_beneath_to_xfer_partial) | |
477 | { | |
478 | record_beneath_to_xfer_partial = t->to_xfer_partial; | |
479 | record_beneath_to_xfer_partial_ops = t; | |
480 | } | |
481 | if (!record_beneath_to_insert_breakpoint) | |
482 | record_beneath_to_insert_breakpoint = t->to_insert_breakpoint; | |
483 | if (!record_beneath_to_remove_breakpoint) | |
484 | record_beneath_to_remove_breakpoint = t->to_remove_breakpoint; | |
485 | } | |
486 | if (!record_beneath_to_resume) | |
487 | error (_("Process record can't get to_resume.")); | |
488 | if (!record_beneath_to_wait) | |
489 | error (_("Process record can't get to_wait.")); | |
490 | if (!record_beneath_to_store_registers) | |
491 | error (_("Process record can't get to_store_registers.")); | |
492 | if (!record_beneath_to_xfer_partial) | |
493 | error (_("Process record can't get to_xfer_partial.")); | |
494 | if (!record_beneath_to_insert_breakpoint) | |
495 | error (_("Process record can't get to_insert_breakpoint.")); | |
496 | if (!record_beneath_to_remove_breakpoint) | |
497 | error (_("Process record can't get to_remove_breakpoint.")); | |
498 | ||
499 | push_target (&record_ops); | |
500 | ||
501 | /* Reset */ | |
502 | record_insn_num = 0; | |
503 | record_list = &record_first; | |
504 | record_list->next = NULL; | |
505 | } | |
506 | ||
507 | static void | |
508 | record_close (int quitting) | |
509 | { | |
510 | if (record_debug) | |
511 | fprintf_unfiltered (gdb_stdlog, "Process record: record_close\n"); | |
512 | ||
513 | record_list_release (record_list); | |
514 | } | |
515 | ||
516 | static int record_resume_step = 0; | |
69d05d38 HZ |
517 | static int record_resume_error; |
518 | ||
519 | static void | |
520 | record_resume (struct target_ops *ops, ptid_t ptid, int step, | |
14c6ee20 | 521 | enum target_signal signal) |
69d05d38 HZ |
522 | { |
523 | record_resume_step = step; | |
69d05d38 HZ |
524 | |
525 | if (!RECORD_IS_REPLAY) | |
526 | { | |
527 | if (do_record_message (get_current_regcache ())) | |
528 | { | |
529 | record_resume_error = 0; | |
530 | } | |
531 | else | |
532 | { | |
533 | record_resume_error = 1; | |
534 | return; | |
535 | } | |
536 | record_beneath_to_resume (record_beneath_to_resume_ops, ptid, 1, | |
14c6ee20 | 537 | signal); |
69d05d38 HZ |
538 | } |
539 | } | |
540 | ||
541 | static int record_get_sig = 0; | |
542 | ||
543 | static void | |
544 | record_sig_handler (int signo) | |
545 | { | |
546 | if (record_debug) | |
547 | fprintf_unfiltered (gdb_stdlog, "Process record: get a signal\n"); | |
548 | ||
549 | /* It will break the running inferior in replay mode. */ | |
550 | record_resume_step = 1; | |
551 | ||
552 | /* It will let record_wait set inferior status to get the signal | |
553 | SIGINT. */ | |
554 | record_get_sig = 1; | |
555 | } | |
556 | ||
557 | static void | |
558 | record_wait_cleanups (void *ignore) | |
559 | { | |
560 | if (execution_direction == EXEC_REVERSE) | |
561 | { | |
562 | if (record_list->next) | |
563 | record_list = record_list->next; | |
564 | } | |
565 | else | |
566 | record_list = record_list->prev; | |
567 | } | |
568 | ||
569 | /* In replay mode, this function examines the recorded log and | |
570 | determines where to stop. */ | |
571 | ||
572 | static ptid_t | |
573 | record_wait (struct target_ops *ops, | |
47608cb1 PA |
574 | ptid_t ptid, struct target_waitstatus *status, |
575 | int options) | |
69d05d38 HZ |
576 | { |
577 | struct cleanup *set_cleanups = record_gdb_operation_disable_set (); | |
578 | ||
579 | if (record_debug) | |
580 | fprintf_unfiltered (gdb_stdlog, | |
581 | "Process record: record_wait " | |
582 | "record_resume_step = %d\n", | |
583 | record_resume_step); | |
584 | ||
585 | if (!RECORD_IS_REPLAY) | |
586 | { | |
587 | if (record_resume_error) | |
588 | { | |
589 | /* If record_resume get error, return directly. */ | |
590 | status->kind = TARGET_WAITKIND_STOPPED; | |
591 | status->value.sig = TARGET_SIGNAL_ABRT; | |
592 | return inferior_ptid; | |
593 | } | |
594 | ||
595 | if (record_resume_step) | |
596 | { | |
597 | /* This is a single step. */ | |
598 | return record_beneath_to_wait (record_beneath_to_wait_ops, | |
90092760 | 599 | ptid, status, options); |
69d05d38 HZ |
600 | } |
601 | else | |
602 | { | |
603 | /* This is not a single step. */ | |
604 | ptid_t ret; | |
605 | CORE_ADDR tmp_pc; | |
606 | ||
607 | while (1) | |
608 | { | |
609 | ret = record_beneath_to_wait (record_beneath_to_wait_ops, | |
90092760 | 610 | ptid, status, options); |
69d05d38 HZ |
611 | |
612 | if (status->kind == TARGET_WAITKIND_STOPPED | |
613 | && status->value.sig == TARGET_SIGNAL_TRAP) | |
614 | { | |
615 | /* Check if there is a breakpoint. */ | |
616 | registers_changed (); | |
fb14de7b | 617 | tmp_pc = regcache_read_pc (get_current_regcache ()); |
69d05d38 HZ |
618 | if (breakpoint_inserted_here_p (tmp_pc)) |
619 | { | |
620 | /* There is a breakpoint. */ | |
621 | CORE_ADDR decr_pc_after_break = | |
622 | gdbarch_decr_pc_after_break | |
623 | (get_regcache_arch (get_current_regcache ())); | |
624 | if (decr_pc_after_break) | |
625 | { | |
626 | regcache_write_pc (get_thread_regcache (ret), | |
627 | tmp_pc + decr_pc_after_break); | |
628 | } | |
629 | } | |
630 | else | |
631 | { | |
632 | /* There is not a breakpoint. */ | |
633 | if (!do_record_message (get_current_regcache ())) | |
634 | { | |
635 | break; | |
636 | } | |
637 | record_beneath_to_resume (record_beneath_to_resume_ops, | |
638 | ptid, 1, | |
88fef440 | 639 | TARGET_SIGNAL_0); |
69d05d38 HZ |
640 | continue; |
641 | } | |
642 | } | |
643 | ||
644 | /* The inferior is broken by a breakpoint or a signal. */ | |
645 | break; | |
646 | } | |
647 | ||
648 | return ret; | |
649 | } | |
650 | } | |
651 | else | |
652 | { | |
653 | struct regcache *regcache = get_current_regcache (); | |
5af949e3 | 654 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
69d05d38 HZ |
655 | int continue_flag = 1; |
656 | int first_record_end = 1; | |
657 | struct cleanup *old_cleanups = make_cleanup (record_wait_cleanups, 0); | |
658 | CORE_ADDR tmp_pc; | |
659 | ||
660 | status->kind = TARGET_WAITKIND_STOPPED; | |
661 | ||
662 | /* Check breakpoint when forward execute. */ | |
663 | if (execution_direction == EXEC_FORWARD) | |
664 | { | |
665 | tmp_pc = regcache_read_pc (regcache); | |
666 | if (breakpoint_inserted_here_p (tmp_pc)) | |
667 | { | |
668 | if (record_debug) | |
669 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 UW |
670 | "Process record: break at %s.\n", |
671 | paddress (gdbarch, tmp_pc)); | |
672 | if (gdbarch_decr_pc_after_break (gdbarch) | |
69d05d38 HZ |
673 | && !record_resume_step) |
674 | regcache_write_pc (regcache, | |
675 | tmp_pc + | |
5af949e3 | 676 | gdbarch_decr_pc_after_break (gdbarch)); |
69d05d38 HZ |
677 | goto replay_out; |
678 | } | |
679 | } | |
680 | ||
681 | record_get_sig = 0; | |
682 | signal (SIGINT, record_sig_handler); | |
683 | /* If GDB is in terminal_inferior mode, it will not get the signal. | |
684 | And in GDB replay mode, GDB doesn't need to be in terminal_inferior | |
685 | mode, because inferior will not executed. | |
686 | Then set it to terminal_ours to make GDB get the signal. */ | |
687 | target_terminal_ours (); | |
688 | ||
689 | /* In EXEC_FORWARD mode, record_list points to the tail of prev | |
690 | instruction. */ | |
691 | if (execution_direction == EXEC_FORWARD && record_list->next) | |
692 | record_list = record_list->next; | |
693 | ||
694 | /* Loop over the record_list, looking for the next place to | |
695 | stop. */ | |
696 | do | |
697 | { | |
698 | /* Check for beginning and end of log. */ | |
699 | if (execution_direction == EXEC_REVERSE | |
700 | && record_list == &record_first) | |
701 | { | |
702 | /* Hit beginning of record log in reverse. */ | |
703 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
704 | break; | |
705 | } | |
706 | if (execution_direction != EXEC_REVERSE && !record_list->next) | |
707 | { | |
708 | /* Hit end of record log going forward. */ | |
709 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
710 | break; | |
711 | } | |
712 | ||
713 | /* Set ptid, register and memory according to record_list. */ | |
714 | if (record_list->type == record_reg) | |
715 | { | |
716 | /* reg */ | |
717 | gdb_byte reg[MAX_REGISTER_SIZE]; | |
718 | if (record_debug > 1) | |
719 | fprintf_unfiltered (gdb_stdlog, | |
720 | "Process record: record_reg %s to " | |
721 | "inferior num = %d.\n", | |
722 | host_address_to_string (record_list), | |
723 | record_list->u.reg.num); | |
724 | regcache_cooked_read (regcache, record_list->u.reg.num, reg); | |
725 | regcache_cooked_write (regcache, record_list->u.reg.num, | |
726 | record_list->u.reg.val); | |
727 | memcpy (record_list->u.reg.val, reg, MAX_REGISTER_SIZE); | |
728 | } | |
729 | else if (record_list->type == record_mem) | |
730 | { | |
731 | /* mem */ | |
afd0cd3f MS |
732 | /* Nothing to do if the entry is flagged not_accessible. */ |
733 | if (!record_list->u.mem.mem_entry_not_accessible) | |
734 | { | |
735 | gdb_byte *mem = alloca (record_list->u.mem.len); | |
736 | if (record_debug > 1) | |
737 | fprintf_unfiltered (gdb_stdlog, | |
738 | "Process record: record_mem %s to " | |
739 | "inferior addr = %s len = %d.\n", | |
740 | host_address_to_string (record_list), | |
741 | paddress (gdbarch, | |
742 | record_list->u.mem.addr), | |
743 | record_list->u.mem.len); | |
744 | ||
745 | if (target_read_memory (record_list->u.mem.addr, mem, | |
746 | record_list->u.mem.len)) | |
747 | { | |
748 | if (execution_direction != EXEC_REVERSE) | |
749 | error (_("Process record: error reading memory at " | |
750 | "addr = %s len = %d."), | |
751 | paddress (gdbarch, record_list->u.mem.addr), | |
752 | record_list->u.mem.len); | |
753 | else | |
754 | /* Read failed -- | |
755 | flag entry as not_accessible. */ | |
756 | record_list->u.mem.mem_entry_not_accessible = 1; | |
757 | } | |
758 | else | |
759 | { | |
760 | if (target_write_memory (record_list->u.mem.addr, | |
761 | record_list->u.mem.val, | |
762 | record_list->u.mem.len)) | |
763 | { | |
764 | if (execution_direction != EXEC_REVERSE) | |
765 | error (_("Process record: error writing memory at " | |
766 | "addr = %s len = %d."), | |
767 | paddress (gdbarch, record_list->u.mem.addr), | |
768 | record_list->u.mem.len); | |
769 | else | |
770 | /* Write failed -- | |
771 | flag entry as not_accessible. */ | |
772 | record_list->u.mem.mem_entry_not_accessible = 1; | |
773 | } | |
774 | else | |
775 | { | |
776 | memcpy (record_list->u.mem.val, mem, | |
777 | record_list->u.mem.len); | |
778 | } | |
779 | } | |
780 | } | |
69d05d38 HZ |
781 | } |
782 | else | |
783 | { | |
784 | if (record_debug > 1) | |
785 | fprintf_unfiltered (gdb_stdlog, | |
786 | "Process record: record_end %s to " | |
787 | "inferior.\n", | |
788 | host_address_to_string (record_list)); | |
789 | ||
790 | if (first_record_end && execution_direction == EXEC_REVERSE) | |
791 | { | |
792 | /* When reverse excute, the first record_end is the part of | |
793 | current instruction. */ | |
794 | first_record_end = 0; | |
795 | } | |
796 | else | |
797 | { | |
798 | /* In EXEC_REVERSE mode, this is the record_end of prev | |
799 | instruction. | |
800 | In EXEC_FORWARD mode, this is the record_end of current | |
801 | instruction. */ | |
802 | /* step */ | |
803 | if (record_resume_step) | |
804 | { | |
805 | if (record_debug > 1) | |
806 | fprintf_unfiltered (gdb_stdlog, | |
807 | "Process record: step.\n"); | |
808 | continue_flag = 0; | |
809 | } | |
810 | ||
811 | /* check breakpoint */ | |
812 | tmp_pc = regcache_read_pc (regcache); | |
813 | if (breakpoint_inserted_here_p (tmp_pc)) | |
814 | { | |
815 | if (record_debug) | |
816 | fprintf_unfiltered (gdb_stdlog, | |
817 | "Process record: break " | |
5af949e3 UW |
818 | "at %s.\n", |
819 | paddress (gdbarch, tmp_pc)); | |
820 | if (gdbarch_decr_pc_after_break (gdbarch) | |
69d05d38 HZ |
821 | && execution_direction == EXEC_FORWARD |
822 | && !record_resume_step) | |
823 | regcache_write_pc (regcache, | |
824 | tmp_pc + | |
5af949e3 | 825 | gdbarch_decr_pc_after_break (gdbarch)); |
69d05d38 HZ |
826 | continue_flag = 0; |
827 | } | |
828 | } | |
829 | } | |
830 | ||
831 | if (continue_flag) | |
832 | { | |
833 | if (execution_direction == EXEC_REVERSE) | |
834 | { | |
835 | if (record_list->prev) | |
836 | record_list = record_list->prev; | |
837 | } | |
838 | else | |
839 | { | |
840 | if (record_list->next) | |
841 | record_list = record_list->next; | |
842 | } | |
843 | } | |
844 | } | |
845 | while (continue_flag); | |
846 | ||
847 | signal (SIGINT, handle_sigint); | |
848 | ||
849 | replay_out: | |
850 | if (record_get_sig) | |
851 | status->value.sig = TARGET_SIGNAL_INT; | |
852 | else | |
853 | status->value.sig = TARGET_SIGNAL_TRAP; | |
854 | ||
855 | discard_cleanups (old_cleanups); | |
856 | } | |
857 | ||
858 | do_cleanups (set_cleanups); | |
859 | return inferior_ptid; | |
860 | } | |
861 | ||
862 | static void | |
863 | record_disconnect (struct target_ops *target, char *args, int from_tty) | |
864 | { | |
865 | if (record_debug) | |
866 | fprintf_unfiltered (gdb_stdlog, "Process record: record_disconnect\n"); | |
867 | ||
868 | unpush_target (&record_ops); | |
869 | target_disconnect (args, from_tty); | |
870 | } | |
871 | ||
872 | static void | |
873 | record_detach (struct target_ops *ops, char *args, int from_tty) | |
874 | { | |
875 | if (record_debug) | |
876 | fprintf_unfiltered (gdb_stdlog, "Process record: record_detach\n"); | |
877 | ||
878 | unpush_target (&record_ops); | |
879 | target_detach (args, from_tty); | |
880 | } | |
881 | ||
882 | static void | |
883 | record_mourn_inferior (struct target_ops *ops) | |
884 | { | |
885 | if (record_debug) | |
886 | fprintf_unfiltered (gdb_stdlog, "Process record: " | |
887 | "record_mourn_inferior\n"); | |
888 | ||
889 | unpush_target (&record_ops); | |
890 | target_mourn_inferior (); | |
891 | } | |
892 | ||
893 | /* Close process record target before killing the inferior process. */ | |
894 | ||
895 | static void | |
896 | record_kill (struct target_ops *ops) | |
897 | { | |
898 | if (record_debug) | |
899 | fprintf_unfiltered (gdb_stdlog, "Process record: record_kill\n"); | |
900 | ||
901 | unpush_target (&record_ops); | |
902 | target_kill (); | |
903 | } | |
904 | ||
905 | /* Record registers change (by user or by GDB) to list as an instruction. */ | |
906 | ||
907 | static void | |
908 | record_registers_change (struct regcache *regcache, int regnum) | |
909 | { | |
910 | /* Check record_insn_num. */ | |
911 | record_check_insn_num (0); | |
912 | ||
913 | record_arch_list_head = NULL; | |
914 | record_arch_list_tail = NULL; | |
915 | ||
916 | if (regnum < 0) | |
917 | { | |
918 | int i; | |
919 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
920 | { | |
921 | if (record_arch_list_add_reg (regcache, i)) | |
922 | { | |
923 | record_list_release (record_arch_list_tail); | |
924 | error (_("Process record: failed to record execution log.")); | |
925 | } | |
926 | } | |
927 | } | |
928 | else | |
929 | { | |
930 | if (record_arch_list_add_reg (regcache, regnum)) | |
931 | { | |
932 | record_list_release (record_arch_list_tail); | |
933 | error (_("Process record: failed to record execution log.")); | |
934 | } | |
935 | } | |
936 | if (record_arch_list_add_end ()) | |
937 | { | |
938 | record_list_release (record_arch_list_tail); | |
939 | error (_("Process record: failed to record execution log.")); | |
940 | } | |
941 | record_list->next = record_arch_list_head; | |
942 | record_arch_list_head->prev = record_list; | |
943 | record_list = record_arch_list_tail; | |
944 | ||
945 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
946 | record_list_release_first (); | |
947 | else | |
948 | record_insn_num++; | |
949 | } | |
950 | ||
951 | static void | |
952 | record_store_registers (struct target_ops *ops, struct regcache *regcache, | |
953 | int regno) | |
954 | { | |
955 | if (!record_gdb_operation_disable) | |
956 | { | |
957 | if (RECORD_IS_REPLAY) | |
958 | { | |
959 | int n; | |
69d05d38 HZ |
960 | |
961 | /* Let user choose if he wants to write register or not. */ | |
962 | if (regno < 0) | |
963 | n = | |
964 | nquery (_("Because GDB is in replay mode, changing the " | |
965 | "value of a register will make the execution " | |
966 | "log unusable from this point onward. " | |
967 | "Change all registers?")); | |
968 | else | |
969 | n = | |
970 | nquery (_("Because GDB is in replay mode, changing the value " | |
971 | "of a register will make the execution log unusable " | |
972 | "from this point onward. Change register %s?"), | |
973 | gdbarch_register_name (get_regcache_arch (regcache), | |
974 | regno)); | |
975 | ||
976 | if (!n) | |
977 | { | |
978 | /* Invalidate the value of regcache that was set in function | |
979 | "regcache_raw_write". */ | |
980 | if (regno < 0) | |
981 | { | |
982 | int i; | |
983 | for (i = 0; | |
984 | i < gdbarch_num_regs (get_regcache_arch (regcache)); | |
985 | i++) | |
986 | regcache_invalidate (regcache, i); | |
987 | } | |
988 | else | |
989 | regcache_invalidate (regcache, regno); | |
990 | ||
991 | error (_("Process record canceled the operation.")); | |
992 | } | |
993 | ||
994 | /* Destroy the record from here forward. */ | |
995 | record_list_release_next (); | |
996 | } | |
997 | ||
998 | record_registers_change (regcache, regno); | |
999 | } | |
1000 | record_beneath_to_store_registers (record_beneath_to_store_registers_ops, | |
1001 | regcache, regno); | |
1002 | } | |
1003 | ||
1004 | /* Behavior is conditional on RECORD_IS_REPLAY. | |
1005 | In replay mode, we cannot write memory unles we are willing to | |
1006 | invalidate the record/replay log from this point forward. */ | |
1007 | ||
1008 | static LONGEST | |
1009 | record_xfer_partial (struct target_ops *ops, enum target_object object, | |
1010 | const char *annex, gdb_byte *readbuf, | |
1011 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1012 | { | |
1013 | if (!record_gdb_operation_disable | |
1014 | && (object == TARGET_OBJECT_MEMORY | |
1015 | || object == TARGET_OBJECT_RAW_MEMORY) && writebuf) | |
1016 | { | |
1017 | if (RECORD_IS_REPLAY) | |
1018 | { | |
1019 | /* Let user choose if he wants to write memory or not. */ | |
1020 | if (!nquery (_("Because GDB is in replay mode, writing to memory " | |
1021 | "will make the execution log unusable from this " | |
5af949e3 UW |
1022 | "point onward. Write memory at address %s?"), |
1023 | paddress (target_gdbarch, offset))) | |
9a9dc473 | 1024 | error (_("Process record canceled the operation.")); |
69d05d38 HZ |
1025 | |
1026 | /* Destroy the record from here forward. */ | |
1027 | record_list_release_next (); | |
1028 | } | |
1029 | ||
1030 | /* Check record_insn_num */ | |
1031 | record_check_insn_num (0); | |
1032 | ||
1033 | /* Record registers change to list as an instruction. */ | |
1034 | record_arch_list_head = NULL; | |
1035 | record_arch_list_tail = NULL; | |
1036 | if (record_arch_list_add_mem (offset, len)) | |
1037 | { | |
1038 | record_list_release (record_arch_list_tail); | |
1039 | if (record_debug) | |
1040 | fprintf_unfiltered (gdb_stdlog, | |
1041 | _("Process record: failed to record " | |
1042 | "execution log.")); | |
1043 | return -1; | |
1044 | } | |
1045 | if (record_arch_list_add_end ()) | |
1046 | { | |
1047 | record_list_release (record_arch_list_tail); | |
1048 | if (record_debug) | |
1049 | fprintf_unfiltered (gdb_stdlog, | |
1050 | _("Process record: failed to record " | |
1051 | "execution log.")); | |
1052 | return -1; | |
1053 | } | |
1054 | record_list->next = record_arch_list_head; | |
1055 | record_arch_list_head->prev = record_list; | |
1056 | record_list = record_arch_list_tail; | |
1057 | ||
1058 | if (record_insn_num == record_insn_max_num && record_insn_max_num) | |
1059 | record_list_release_first (); | |
1060 | else | |
1061 | record_insn_num++; | |
1062 | } | |
1063 | ||
1064 | return record_beneath_to_xfer_partial (record_beneath_to_xfer_partial_ops, | |
1065 | object, annex, readbuf, writebuf, | |
1066 | offset, len); | |
1067 | } | |
1068 | ||
1069 | /* Behavior is conditional on RECORD_IS_REPLAY. | |
1070 | We will not actually insert or remove breakpoints when replaying, | |
1071 | nor when recording. */ | |
1072 | ||
1073 | static int | |
a6d9a66e UW |
1074 | record_insert_breakpoint (struct gdbarch *gdbarch, |
1075 | struct bp_target_info *bp_tgt) | |
69d05d38 HZ |
1076 | { |
1077 | if (!RECORD_IS_REPLAY) | |
1078 | { | |
1079 | struct cleanup *old_cleanups = record_gdb_operation_disable_set (); | |
a6d9a66e | 1080 | int ret = record_beneath_to_insert_breakpoint (gdbarch, bp_tgt); |
69d05d38 HZ |
1081 | |
1082 | do_cleanups (old_cleanups); | |
1083 | ||
1084 | return ret; | |
1085 | } | |
1086 | ||
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | static int | |
a6d9a66e UW |
1091 | record_remove_breakpoint (struct gdbarch *gdbarch, |
1092 | struct bp_target_info *bp_tgt) | |
69d05d38 HZ |
1093 | { |
1094 | if (!RECORD_IS_REPLAY) | |
1095 | { | |
1096 | struct cleanup *old_cleanups = record_gdb_operation_disable_set (); | |
a6d9a66e | 1097 | int ret = record_beneath_to_remove_breakpoint (gdbarch, bp_tgt); |
69d05d38 HZ |
1098 | |
1099 | do_cleanups (old_cleanups); | |
1100 | ||
1101 | return ret; | |
1102 | } | |
1103 | ||
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | static int | |
1108 | record_can_execute_reverse (void) | |
1109 | { | |
1110 | return 1; | |
1111 | } | |
1112 | ||
1113 | static void | |
1114 | init_record_ops (void) | |
1115 | { | |
1116 | record_ops.to_shortname = "record"; | |
1117 | record_ops.to_longname = "Process record and replay target"; | |
1118 | record_ops.to_doc = | |
1119 | "Log program while executing and replay execution from log."; | |
1120 | record_ops.to_open = record_open; | |
1121 | record_ops.to_close = record_close; | |
1122 | record_ops.to_resume = record_resume; | |
1123 | record_ops.to_wait = record_wait; | |
1124 | record_ops.to_disconnect = record_disconnect; | |
1125 | record_ops.to_detach = record_detach; | |
1126 | record_ops.to_mourn_inferior = record_mourn_inferior; | |
1127 | record_ops.to_kill = record_kill; | |
1128 | record_ops.to_create_inferior = find_default_create_inferior; | |
1129 | record_ops.to_store_registers = record_store_registers; | |
1130 | record_ops.to_xfer_partial = record_xfer_partial; | |
1131 | record_ops.to_insert_breakpoint = record_insert_breakpoint; | |
1132 | record_ops.to_remove_breakpoint = record_remove_breakpoint; | |
1133 | record_ops.to_can_execute_reverse = record_can_execute_reverse; | |
1134 | record_ops.to_stratum = record_stratum; | |
1135 | record_ops.to_magic = OPS_MAGIC; | |
1136 | } | |
1137 | ||
1138 | static void | |
1139 | show_record_debug (struct ui_file *file, int from_tty, | |
1140 | struct cmd_list_element *c, const char *value) | |
1141 | { | |
1142 | fprintf_filtered (file, _("Debugging of process record target is %s.\n"), | |
1143 | value); | |
1144 | } | |
1145 | ||
1146 | /* Alias for "target record". */ | |
1147 | ||
1148 | static void | |
1149 | cmd_record_start (char *args, int from_tty) | |
1150 | { | |
1151 | execute_command ("target record", from_tty); | |
1152 | } | |
1153 | ||
1154 | /* Truncate the record log from the present point | |
1155 | of replay until the end. */ | |
1156 | ||
1157 | static void | |
1158 | cmd_record_delete (char *args, int from_tty) | |
1159 | { | |
1160 | if (current_target.to_stratum == record_stratum) | |
1161 | { | |
1162 | if (RECORD_IS_REPLAY) | |
1163 | { | |
1164 | if (!from_tty || query (_("Delete the log from this point forward " | |
1165 | "and begin to record the running message " | |
1166 | "at current PC?"))) | |
1167 | record_list_release_next (); | |
1168 | } | |
1169 | else | |
1170 | printf_unfiltered (_("Already at end of record list.\n")); | |
1171 | ||
1172 | } | |
1173 | else | |
1174 | printf_unfiltered (_("Process record is not started.\n")); | |
1175 | } | |
1176 | ||
1177 | /* Implement the "stoprecord" command. */ | |
1178 | ||
1179 | static void | |
1180 | cmd_record_stop (char *args, int from_tty) | |
1181 | { | |
1182 | if (current_target.to_stratum == record_stratum) | |
1183 | { | |
1184 | if (!record_list || !from_tty || query (_("Delete recorded log and " | |
1185 | "stop recording?"))) | |
1186 | unpush_target (&record_ops); | |
1187 | } | |
1188 | else | |
1189 | printf_unfiltered (_("Process record is not started.\n")); | |
1190 | } | |
1191 | ||
1192 | /* Set upper limit of record log size. */ | |
1193 | ||
1194 | static void | |
1195 | set_record_insn_max_num (char *args, int from_tty, struct cmd_list_element *c) | |
1196 | { | |
1197 | if (record_insn_num > record_insn_max_num && record_insn_max_num) | |
1198 | { | |
1199 | printf_unfiltered (_("Record instructions number is bigger than " | |
1200 | "record instructions max number. Auto delete " | |
1201 | "the first ones?\n")); | |
1202 | ||
1203 | while (record_insn_num > record_insn_max_num) | |
1204 | record_list_release_first (); | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | /* Print the current index into the record log (number of insns recorded | |
1209 | so far). */ | |
1210 | ||
1211 | static void | |
1212 | show_record_insn_number (char *ignore, int from_tty) | |
1213 | { | |
1214 | printf_unfiltered (_("Record instruction number is %d.\n"), | |
1215 | record_insn_num); | |
1216 | } | |
1217 | ||
1218 | static struct cmd_list_element *record_cmdlist, *set_record_cmdlist, | |
1219 | *show_record_cmdlist, *info_record_cmdlist; | |
1220 | ||
1221 | static void | |
1222 | set_record_command (char *args, int from_tty) | |
1223 | { | |
1224 | printf_unfiltered (_("\ | |
1225 | \"set record\" must be followed by an apporpriate subcommand.\n")); | |
1226 | help_list (set_record_cmdlist, "set record ", all_commands, gdb_stdout); | |
1227 | } | |
1228 | ||
1229 | static void | |
1230 | show_record_command (char *args, int from_tty) | |
1231 | { | |
1232 | cmd_show_list (show_record_cmdlist, from_tty, ""); | |
1233 | } | |
1234 | ||
1235 | static void | |
1236 | info_record_command (char *args, int from_tty) | |
1237 | { | |
1238 | cmd_show_list (info_record_cmdlist, from_tty, ""); | |
1239 | } | |
1240 | ||
1241 | void | |
1242 | _initialize_record (void) | |
1243 | { | |
1244 | /* Init record_first. */ | |
1245 | record_first.prev = NULL; | |
1246 | record_first.next = NULL; | |
1247 | record_first.type = record_end; | |
1248 | ||
1249 | init_record_ops (); | |
1250 | add_target (&record_ops); | |
1251 | ||
1252 | add_setshow_zinteger_cmd ("record", no_class, &record_debug, | |
1253 | _("Set debugging of record/replay feature."), | |
1254 | _("Show debugging of record/replay feature."), | |
1255 | _("When enabled, debugging output for " | |
1256 | "record/replay feature is displayed."), | |
1257 | NULL, show_record_debug, &setdebuglist, | |
1258 | &showdebuglist); | |
1259 | ||
1260 | add_prefix_cmd ("record", class_obscure, cmd_record_start, | |
1261 | _("Abbreviated form of \"target record\" command."), | |
1262 | &record_cmdlist, "record ", 0, &cmdlist); | |
1263 | add_com_alias ("rec", "record", class_obscure, 1); | |
1264 | add_prefix_cmd ("record", class_support, set_record_command, | |
1265 | _("Set record options"), &set_record_cmdlist, | |
1266 | "set record ", 0, &setlist); | |
1267 | add_alias_cmd ("rec", "record", class_obscure, 1, &setlist); | |
1268 | add_prefix_cmd ("record", class_support, show_record_command, | |
1269 | _("Show record options"), &show_record_cmdlist, | |
1270 | "show record ", 0, &showlist); | |
1271 | add_alias_cmd ("rec", "record", class_obscure, 1, &showlist); | |
1272 | add_prefix_cmd ("record", class_support, info_record_command, | |
1273 | _("Info record options"), &info_record_cmdlist, | |
1274 | "info record ", 0, &infolist); | |
1275 | add_alias_cmd ("rec", "record", class_obscure, 1, &infolist); | |
1276 | ||
1277 | ||
1278 | add_cmd ("delete", class_obscure, cmd_record_delete, | |
1279 | _("Delete the rest of execution log and start recording it anew."), | |
1280 | &record_cmdlist); | |
1281 | add_alias_cmd ("d", "delete", class_obscure, 1, &record_cmdlist); | |
1282 | add_alias_cmd ("del", "delete", class_obscure, 1, &record_cmdlist); | |
1283 | ||
1284 | add_cmd ("stop", class_obscure, cmd_record_stop, | |
1285 | _("Stop the record/replay target."), | |
1286 | &record_cmdlist); | |
1287 | add_alias_cmd ("s", "stop", class_obscure, 1, &record_cmdlist); | |
1288 | ||
1289 | /* Record instructions number limit command. */ | |
1290 | add_setshow_boolean_cmd ("stop-at-limit", no_class, | |
299a410e EZ |
1291 | &record_stop_at_limit, _("\ |
1292 | Set whether record/replay stops when record/replay buffer becomes full."), _("\ | |
1293 | Show whether record/replay stops when record/replay buffer becomes full."), _("\ | |
1294 | Default is ON.\n\ | |
1295 | When ON, if the record/replay buffer becomes full, ask user what to do.\n\ | |
1296 | When OFF, if the record/replay buffer becomes full,\n\ | |
1297 | delete the oldest recorded instruction to make room for each new one."), | |
69d05d38 HZ |
1298 | NULL, NULL, |
1299 | &set_record_cmdlist, &show_record_cmdlist); | |
1300 | add_setshow_zinteger_cmd ("insn-number-max", no_class, | |
1301 | &record_insn_max_num, | |
1302 | _("Set record/replay buffer limit."), | |
299a410e EZ |
1303 | _("Show record/replay buffer limit."), _("\ |
1304 | Set the maximum number of instructions to be stored in the\n\ | |
1305 | record/replay buffer. Zero means unlimited. Default is 200000."), | |
69d05d38 HZ |
1306 | set_record_insn_max_num, |
1307 | NULL, &set_record_cmdlist, &show_record_cmdlist); | |
1308 | add_cmd ("insn-number", class_obscure, show_record_insn_number, | |
1309 | _("Show the current number of instructions in the " | |
1310 | "record/replay buffer."), &info_record_cmdlist); | |
1311 | } |