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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2013-2014 Free Software Foundation, Inc. |
afedecd3 MM |
4 | |
5 | Contributed by Intel Corp. <markus.t.metzger@intel.com> | |
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 | |
11 | the Free Software Foundation; either version 3 of the License, or | |
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 | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "record.h" | |
24 | #include "gdbthread.h" | |
25 | #include "target.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "disasm.h" | |
28 | #include "observer.h" | |
29 | #include "exceptions.h" | |
30 | #include "cli/cli-utils.h" | |
31 | #include "source.h" | |
32 | #include "ui-out.h" | |
33 | #include "symtab.h" | |
34 | #include "filenames.h" | |
1f3ef581 | 35 | #include "regcache.h" |
cecac1ab | 36 | #include "frame-unwind.h" |
afedecd3 MM |
37 | |
38 | /* The target_ops of record-btrace. */ | |
39 | static struct target_ops record_btrace_ops; | |
40 | ||
41 | /* A new thread observer enabling branch tracing for the new thread. */ | |
42 | static struct observer *record_btrace_thread_observer; | |
43 | ||
633785ff MM |
44 | /* Temporarily allow memory accesses. */ |
45 | static int record_btrace_allow_memory_access; | |
46 | ||
afedecd3 MM |
47 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
48 | ambiguities when used in if statements. */ | |
49 | ||
50 | #define DEBUG(msg, args...) \ | |
51 | do \ | |
52 | { \ | |
53 | if (record_debug != 0) \ | |
54 | fprintf_unfiltered (gdb_stdlog, \ | |
55 | "[record-btrace] " msg "\n", ##args); \ | |
56 | } \ | |
57 | while (0) | |
58 | ||
59 | ||
60 | /* Update the branch trace for the current thread and return a pointer to its | |
066ce621 | 61 | thread_info. |
afedecd3 MM |
62 | |
63 | Throws an error if there is no thread or no trace. This function never | |
64 | returns NULL. */ | |
65 | ||
066ce621 MM |
66 | static struct thread_info * |
67 | require_btrace_thread (void) | |
afedecd3 MM |
68 | { |
69 | struct thread_info *tp; | |
70 | struct btrace_thread_info *btinfo; | |
71 | ||
72 | DEBUG ("require"); | |
73 | ||
74 | tp = find_thread_ptid (inferior_ptid); | |
75 | if (tp == NULL) | |
76 | error (_("No thread.")); | |
77 | ||
78 | btrace_fetch (tp); | |
79 | ||
80 | btinfo = &tp->btrace; | |
81 | ||
23a7fe75 | 82 | if (btinfo->begin == NULL) |
afedecd3 MM |
83 | error (_("No trace.")); |
84 | ||
066ce621 MM |
85 | return tp; |
86 | } | |
87 | ||
88 | /* Update the branch trace for the current thread and return a pointer to its | |
89 | branch trace information struct. | |
90 | ||
91 | Throws an error if there is no thread or no trace. This function never | |
92 | returns NULL. */ | |
93 | ||
94 | static struct btrace_thread_info * | |
95 | require_btrace (void) | |
96 | { | |
97 | struct thread_info *tp; | |
98 | ||
99 | tp = require_btrace_thread (); | |
100 | ||
101 | return &tp->btrace; | |
afedecd3 MM |
102 | } |
103 | ||
104 | /* Enable branch tracing for one thread. Warn on errors. */ | |
105 | ||
106 | static void | |
107 | record_btrace_enable_warn (struct thread_info *tp) | |
108 | { | |
109 | volatile struct gdb_exception error; | |
110 | ||
111 | TRY_CATCH (error, RETURN_MASK_ERROR) | |
112 | btrace_enable (tp); | |
113 | ||
114 | if (error.message != NULL) | |
115 | warning ("%s", error.message); | |
116 | } | |
117 | ||
118 | /* Callback function to disable branch tracing for one thread. */ | |
119 | ||
120 | static void | |
121 | record_btrace_disable_callback (void *arg) | |
122 | { | |
123 | struct thread_info *tp; | |
124 | ||
125 | tp = arg; | |
126 | ||
127 | btrace_disable (tp); | |
128 | } | |
129 | ||
130 | /* Enable automatic tracing of new threads. */ | |
131 | ||
132 | static void | |
133 | record_btrace_auto_enable (void) | |
134 | { | |
135 | DEBUG ("attach thread observer"); | |
136 | ||
137 | record_btrace_thread_observer | |
138 | = observer_attach_new_thread (record_btrace_enable_warn); | |
139 | } | |
140 | ||
141 | /* Disable automatic tracing of new threads. */ | |
142 | ||
143 | static void | |
144 | record_btrace_auto_disable (void) | |
145 | { | |
146 | /* The observer may have been detached, already. */ | |
147 | if (record_btrace_thread_observer == NULL) | |
148 | return; | |
149 | ||
150 | DEBUG ("detach thread observer"); | |
151 | ||
152 | observer_detach_new_thread (record_btrace_thread_observer); | |
153 | record_btrace_thread_observer = NULL; | |
154 | } | |
155 | ||
156 | /* The to_open method of target record-btrace. */ | |
157 | ||
158 | static void | |
159 | record_btrace_open (char *args, int from_tty) | |
160 | { | |
161 | struct cleanup *disable_chain; | |
162 | struct thread_info *tp; | |
163 | ||
164 | DEBUG ("open"); | |
165 | ||
8213266a | 166 | record_preopen (); |
afedecd3 MM |
167 | |
168 | if (!target_has_execution) | |
169 | error (_("The program is not being run.")); | |
170 | ||
171 | if (!target_supports_btrace ()) | |
172 | error (_("Target does not support branch tracing.")); | |
173 | ||
174 | gdb_assert (record_btrace_thread_observer == NULL); | |
175 | ||
176 | disable_chain = make_cleanup (null_cleanup, NULL); | |
177 | ALL_THREADS (tp) | |
178 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->num)) | |
179 | { | |
180 | btrace_enable (tp); | |
181 | ||
182 | make_cleanup (record_btrace_disable_callback, tp); | |
183 | } | |
184 | ||
185 | record_btrace_auto_enable (); | |
186 | ||
187 | push_target (&record_btrace_ops); | |
188 | ||
189 | observer_notify_record_changed (current_inferior (), 1); | |
190 | ||
191 | discard_cleanups (disable_chain); | |
192 | } | |
193 | ||
194 | /* The to_stop_recording method of target record-btrace. */ | |
195 | ||
196 | static void | |
197 | record_btrace_stop_recording (void) | |
198 | { | |
199 | struct thread_info *tp; | |
200 | ||
201 | DEBUG ("stop recording"); | |
202 | ||
203 | record_btrace_auto_disable (); | |
204 | ||
205 | ALL_THREADS (tp) | |
206 | if (tp->btrace.target != NULL) | |
207 | btrace_disable (tp); | |
208 | } | |
209 | ||
210 | /* The to_close method of target record-btrace. */ | |
211 | ||
212 | static void | |
460014f5 | 213 | record_btrace_close (void) |
afedecd3 | 214 | { |
99c819ee MM |
215 | /* Make sure automatic recording gets disabled even if we did not stop |
216 | recording before closing the record-btrace target. */ | |
217 | record_btrace_auto_disable (); | |
218 | ||
afedecd3 MM |
219 | /* We already stopped recording. */ |
220 | } | |
221 | ||
222 | /* The to_info_record method of target record-btrace. */ | |
223 | ||
224 | static void | |
225 | record_btrace_info (void) | |
226 | { | |
227 | struct btrace_thread_info *btinfo; | |
228 | struct thread_info *tp; | |
23a7fe75 | 229 | unsigned int insns, calls; |
afedecd3 MM |
230 | |
231 | DEBUG ("info"); | |
232 | ||
233 | tp = find_thread_ptid (inferior_ptid); | |
234 | if (tp == NULL) | |
235 | error (_("No thread.")); | |
236 | ||
237 | btrace_fetch (tp); | |
238 | ||
23a7fe75 MM |
239 | insns = 0; |
240 | calls = 0; | |
241 | ||
afedecd3 | 242 | btinfo = &tp->btrace; |
23a7fe75 MM |
243 | if (btinfo->begin != NULL) |
244 | { | |
245 | struct btrace_call_iterator call; | |
246 | struct btrace_insn_iterator insn; | |
247 | ||
248 | btrace_call_end (&call, btinfo); | |
249 | btrace_call_prev (&call, 1); | |
5de9129b | 250 | calls = btrace_call_number (&call); |
23a7fe75 MM |
251 | |
252 | btrace_insn_end (&insn, btinfo); | |
253 | btrace_insn_prev (&insn, 1); | |
5de9129b | 254 | insns = btrace_insn_number (&insn); |
23a7fe75 | 255 | } |
afedecd3 MM |
256 | |
257 | printf_unfiltered (_("Recorded %u instructions in %u functions for thread " | |
23a7fe75 | 258 | "%d (%s).\n"), insns, calls, tp->num, |
afedecd3 | 259 | target_pid_to_str (tp->ptid)); |
07bbe694 MM |
260 | |
261 | if (btrace_is_replaying (tp)) | |
262 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
263 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
264 | } |
265 | ||
266 | /* Print an unsigned int. */ | |
267 | ||
268 | static void | |
269 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
270 | { | |
271 | ui_out_field_fmt (uiout, fld, "%u", val); | |
272 | } | |
273 | ||
274 | /* Disassemble a section of the recorded instruction trace. */ | |
275 | ||
276 | static void | |
23a7fe75 MM |
277 | btrace_insn_history (struct ui_out *uiout, |
278 | const struct btrace_insn_iterator *begin, | |
279 | const struct btrace_insn_iterator *end, int flags) | |
afedecd3 MM |
280 | { |
281 | struct gdbarch *gdbarch; | |
23a7fe75 | 282 | struct btrace_insn_iterator it; |
afedecd3 | 283 | |
23a7fe75 MM |
284 | DEBUG ("itrace (0x%x): [%u; %u)", flags, btrace_insn_number (begin), |
285 | btrace_insn_number (end)); | |
afedecd3 MM |
286 | |
287 | gdbarch = target_gdbarch (); | |
288 | ||
23a7fe75 | 289 | for (it = *begin; btrace_insn_cmp (&it, end) != 0; btrace_insn_next (&it, 1)) |
afedecd3 | 290 | { |
23a7fe75 MM |
291 | const struct btrace_insn *insn; |
292 | ||
293 | insn = btrace_insn_get (&it); | |
294 | ||
afedecd3 | 295 | /* Print the instruction index. */ |
23a7fe75 | 296 | ui_out_field_uint (uiout, "index", btrace_insn_number (&it)); |
afedecd3 MM |
297 | ui_out_text (uiout, "\t"); |
298 | ||
299 | /* Disassembly with '/m' flag may not produce the expected result. | |
300 | See PR gdb/11833. */ | |
23a7fe75 | 301 | gdb_disassembly (gdbarch, uiout, NULL, flags, 1, insn->pc, insn->pc + 1); |
afedecd3 MM |
302 | } |
303 | } | |
304 | ||
305 | /* The to_insn_history method of target record-btrace. */ | |
306 | ||
307 | static void | |
308 | record_btrace_insn_history (int size, int flags) | |
309 | { | |
310 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
311 | struct btrace_insn_history *history; |
312 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
313 | struct cleanup *uiout_cleanup; |
314 | struct ui_out *uiout; | |
23a7fe75 | 315 | unsigned int context, covered; |
afedecd3 MM |
316 | |
317 | uiout = current_uiout; | |
318 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
319 | "insn history"); | |
afedecd3 | 320 | context = abs (size); |
afedecd3 MM |
321 | if (context == 0) |
322 | error (_("Bad record instruction-history-size.")); | |
323 | ||
23a7fe75 MM |
324 | btinfo = require_btrace (); |
325 | history = btinfo->insn_history; | |
326 | if (history == NULL) | |
afedecd3 | 327 | { |
07bbe694 | 328 | struct btrace_insn_iterator *replay; |
afedecd3 | 329 | |
23a7fe75 | 330 | DEBUG ("insn-history (0x%x): %d", flags, size); |
afedecd3 | 331 | |
07bbe694 MM |
332 | /* If we're replaying, we start at the replay position. Otherwise, we |
333 | start at the tail of the trace. */ | |
334 | replay = btinfo->replay; | |
335 | if (replay != NULL) | |
336 | begin = *replay; | |
337 | else | |
338 | btrace_insn_end (&begin, btinfo); | |
339 | ||
340 | /* We start from here and expand in the requested direction. Then we | |
341 | expand in the other direction, as well, to fill up any remaining | |
342 | context. */ | |
343 | end = begin; | |
344 | if (size < 0) | |
345 | { | |
346 | /* We want the current position covered, as well. */ | |
347 | covered = btrace_insn_next (&end, 1); | |
348 | covered += btrace_insn_prev (&begin, context - covered); | |
349 | covered += btrace_insn_next (&end, context - covered); | |
350 | } | |
351 | else | |
352 | { | |
353 | covered = btrace_insn_next (&end, context); | |
354 | covered += btrace_insn_prev (&begin, context - covered); | |
355 | } | |
afedecd3 MM |
356 | } |
357 | else | |
358 | { | |
23a7fe75 MM |
359 | begin = history->begin; |
360 | end = history->end; | |
afedecd3 | 361 | |
23a7fe75 MM |
362 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", flags, size, |
363 | btrace_insn_number (&begin), btrace_insn_number (&end)); | |
afedecd3 | 364 | |
23a7fe75 MM |
365 | if (size < 0) |
366 | { | |
367 | end = begin; | |
368 | covered = btrace_insn_prev (&begin, context); | |
369 | } | |
370 | else | |
371 | { | |
372 | begin = end; | |
373 | covered = btrace_insn_next (&end, context); | |
374 | } | |
afedecd3 MM |
375 | } |
376 | ||
23a7fe75 MM |
377 | if (covered > 0) |
378 | btrace_insn_history (uiout, &begin, &end, flags); | |
379 | else | |
380 | { | |
381 | if (size < 0) | |
382 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
383 | else | |
384 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
385 | } | |
afedecd3 | 386 | |
23a7fe75 | 387 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
388 | do_cleanups (uiout_cleanup); |
389 | } | |
390 | ||
391 | /* The to_insn_history_range method of target record-btrace. */ | |
392 | ||
393 | static void | |
394 | record_btrace_insn_history_range (ULONGEST from, ULONGEST to, int flags) | |
395 | { | |
396 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
397 | struct btrace_insn_history *history; |
398 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
399 | struct cleanup *uiout_cleanup; |
400 | struct ui_out *uiout; | |
23a7fe75 MM |
401 | unsigned int low, high; |
402 | int found; | |
afedecd3 MM |
403 | |
404 | uiout = current_uiout; | |
405 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
406 | "insn history"); | |
23a7fe75 MM |
407 | low = from; |
408 | high = to; | |
afedecd3 | 409 | |
23a7fe75 | 410 | DEBUG ("insn-history (0x%x): [%u; %u)", flags, low, high); |
afedecd3 MM |
411 | |
412 | /* Check for wrap-arounds. */ | |
23a7fe75 | 413 | if (low != from || high != to) |
afedecd3 MM |
414 | error (_("Bad range.")); |
415 | ||
0688d04e | 416 | if (high < low) |
afedecd3 MM |
417 | error (_("Bad range.")); |
418 | ||
23a7fe75 | 419 | btinfo = require_btrace (); |
afedecd3 | 420 | |
23a7fe75 MM |
421 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
422 | if (found == 0) | |
423 | error (_("Range out of bounds.")); | |
afedecd3 | 424 | |
23a7fe75 MM |
425 | found = btrace_find_insn_by_number (&end, btinfo, high); |
426 | if (found == 0) | |
0688d04e MM |
427 | { |
428 | /* Silently truncate the range. */ | |
429 | btrace_insn_end (&end, btinfo); | |
430 | } | |
431 | else | |
432 | { | |
433 | /* We want both begin and end to be inclusive. */ | |
434 | btrace_insn_next (&end, 1); | |
435 | } | |
afedecd3 | 436 | |
23a7fe75 MM |
437 | btrace_insn_history (uiout, &begin, &end, flags); |
438 | btrace_set_insn_history (btinfo, &begin, &end); | |
afedecd3 MM |
439 | |
440 | do_cleanups (uiout_cleanup); | |
441 | } | |
442 | ||
443 | /* The to_insn_history_from method of target record-btrace. */ | |
444 | ||
445 | static void | |
446 | record_btrace_insn_history_from (ULONGEST from, int size, int flags) | |
447 | { | |
448 | ULONGEST begin, end, context; | |
449 | ||
450 | context = abs (size); | |
0688d04e MM |
451 | if (context == 0) |
452 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
453 | |
454 | if (size < 0) | |
455 | { | |
456 | end = from; | |
457 | ||
458 | if (from < context) | |
459 | begin = 0; | |
460 | else | |
0688d04e | 461 | begin = from - context + 1; |
afedecd3 MM |
462 | } |
463 | else | |
464 | { | |
465 | begin = from; | |
0688d04e | 466 | end = from + context - 1; |
afedecd3 MM |
467 | |
468 | /* Check for wrap-around. */ | |
469 | if (end < begin) | |
470 | end = ULONGEST_MAX; | |
471 | } | |
472 | ||
473 | record_btrace_insn_history_range (begin, end, flags); | |
474 | } | |
475 | ||
476 | /* Print the instruction number range for a function call history line. */ | |
477 | ||
478 | static void | |
23a7fe75 MM |
479 | btrace_call_history_insn_range (struct ui_out *uiout, |
480 | const struct btrace_function *bfun) | |
afedecd3 | 481 | { |
7acbe133 MM |
482 | unsigned int begin, end, size; |
483 | ||
484 | size = VEC_length (btrace_insn_s, bfun->insn); | |
485 | gdb_assert (size > 0); | |
afedecd3 | 486 | |
23a7fe75 | 487 | begin = bfun->insn_offset; |
7acbe133 | 488 | end = begin + size - 1; |
afedecd3 | 489 | |
23a7fe75 | 490 | ui_out_field_uint (uiout, "insn begin", begin); |
8710b709 | 491 | ui_out_text (uiout, ","); |
23a7fe75 | 492 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
493 | } |
494 | ||
495 | /* Print the source line information for a function call history line. */ | |
496 | ||
497 | static void | |
23a7fe75 MM |
498 | btrace_call_history_src_line (struct ui_out *uiout, |
499 | const struct btrace_function *bfun) | |
afedecd3 MM |
500 | { |
501 | struct symbol *sym; | |
23a7fe75 | 502 | int begin, end; |
afedecd3 MM |
503 | |
504 | sym = bfun->sym; | |
505 | if (sym == NULL) | |
506 | return; | |
507 | ||
508 | ui_out_field_string (uiout, "file", | |
509 | symtab_to_filename_for_display (sym->symtab)); | |
510 | ||
23a7fe75 MM |
511 | begin = bfun->lbegin; |
512 | end = bfun->lend; | |
513 | ||
514 | if (end < begin) | |
afedecd3 MM |
515 | return; |
516 | ||
517 | ui_out_text (uiout, ":"); | |
23a7fe75 | 518 | ui_out_field_int (uiout, "min line", begin); |
afedecd3 | 519 | |
23a7fe75 | 520 | if (end == begin) |
afedecd3 MM |
521 | return; |
522 | ||
8710b709 | 523 | ui_out_text (uiout, ","); |
23a7fe75 | 524 | ui_out_field_int (uiout, "max line", end); |
afedecd3 MM |
525 | } |
526 | ||
527 | /* Disassemble a section of the recorded function trace. */ | |
528 | ||
529 | static void | |
23a7fe75 | 530 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 531 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
532 | const struct btrace_call_iterator *begin, |
533 | const struct btrace_call_iterator *end, | |
afedecd3 MM |
534 | enum record_print_flag flags) |
535 | { | |
23a7fe75 | 536 | struct btrace_call_iterator it; |
afedecd3 | 537 | |
23a7fe75 MM |
538 | DEBUG ("ftrace (0x%x): [%u; %u)", flags, btrace_call_number (begin), |
539 | btrace_call_number (end)); | |
afedecd3 | 540 | |
23a7fe75 | 541 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 542 | { |
23a7fe75 MM |
543 | const struct btrace_function *bfun; |
544 | struct minimal_symbol *msym; | |
545 | struct symbol *sym; | |
546 | ||
547 | bfun = btrace_call_get (&it); | |
548 | msym = bfun->msym; | |
549 | sym = bfun->sym; | |
550 | ||
afedecd3 | 551 | /* Print the function index. */ |
23a7fe75 | 552 | ui_out_field_uint (uiout, "index", bfun->number); |
afedecd3 MM |
553 | ui_out_text (uiout, "\t"); |
554 | ||
8710b709 MM |
555 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
556 | { | |
557 | int level = bfun->level + btinfo->level, i; | |
558 | ||
559 | for (i = 0; i < level; ++i) | |
560 | ui_out_text (uiout, " "); | |
561 | } | |
562 | ||
563 | if (sym != NULL) | |
564 | ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (sym)); | |
565 | else if (msym != NULL) | |
566 | ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (msym)); | |
567 | else if (!ui_out_is_mi_like_p (uiout)) | |
568 | ui_out_field_string (uiout, "function", "??"); | |
569 | ||
1e038f67 | 570 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 571 | { |
8710b709 | 572 | ui_out_text (uiout, _("\tinst ")); |
23a7fe75 | 573 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
574 | } |
575 | ||
1e038f67 | 576 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 577 | { |
8710b709 | 578 | ui_out_text (uiout, _("\tat ")); |
23a7fe75 | 579 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
580 | } |
581 | ||
afedecd3 MM |
582 | ui_out_text (uiout, "\n"); |
583 | } | |
584 | } | |
585 | ||
586 | /* The to_call_history method of target record-btrace. */ | |
587 | ||
588 | static void | |
589 | record_btrace_call_history (int size, int flags) | |
590 | { | |
591 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
592 | struct btrace_call_history *history; |
593 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
594 | struct cleanup *uiout_cleanup; |
595 | struct ui_out *uiout; | |
23a7fe75 | 596 | unsigned int context, covered; |
afedecd3 MM |
597 | |
598 | uiout = current_uiout; | |
599 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
600 | "insn history"); | |
afedecd3 | 601 | context = abs (size); |
afedecd3 MM |
602 | if (context == 0) |
603 | error (_("Bad record function-call-history-size.")); | |
604 | ||
23a7fe75 MM |
605 | btinfo = require_btrace (); |
606 | history = btinfo->call_history; | |
607 | if (history == NULL) | |
afedecd3 | 608 | { |
07bbe694 | 609 | struct btrace_insn_iterator *replay; |
afedecd3 | 610 | |
23a7fe75 | 611 | DEBUG ("call-history (0x%x): %d", flags, size); |
afedecd3 | 612 | |
07bbe694 MM |
613 | /* If we're replaying, we start at the replay position. Otherwise, we |
614 | start at the tail of the trace. */ | |
615 | replay = btinfo->replay; | |
616 | if (replay != NULL) | |
617 | { | |
618 | begin.function = replay->function; | |
619 | begin.btinfo = btinfo; | |
620 | } | |
621 | else | |
622 | btrace_call_end (&begin, btinfo); | |
623 | ||
624 | /* We start from here and expand in the requested direction. Then we | |
625 | expand in the other direction, as well, to fill up any remaining | |
626 | context. */ | |
627 | end = begin; | |
628 | if (size < 0) | |
629 | { | |
630 | /* We want the current position covered, as well. */ | |
631 | covered = btrace_call_next (&end, 1); | |
632 | covered += btrace_call_prev (&begin, context - covered); | |
633 | covered += btrace_call_next (&end, context - covered); | |
634 | } | |
635 | else | |
636 | { | |
637 | covered = btrace_call_next (&end, context); | |
638 | covered += btrace_call_prev (&begin, context- covered); | |
639 | } | |
afedecd3 MM |
640 | } |
641 | else | |
642 | { | |
23a7fe75 MM |
643 | begin = history->begin; |
644 | end = history->end; | |
afedecd3 | 645 | |
23a7fe75 MM |
646 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", flags, size, |
647 | btrace_call_number (&begin), btrace_call_number (&end)); | |
afedecd3 | 648 | |
23a7fe75 MM |
649 | if (size < 0) |
650 | { | |
651 | end = begin; | |
652 | covered = btrace_call_prev (&begin, context); | |
653 | } | |
654 | else | |
655 | { | |
656 | begin = end; | |
657 | covered = btrace_call_next (&end, context); | |
658 | } | |
afedecd3 MM |
659 | } |
660 | ||
23a7fe75 | 661 | if (covered > 0) |
8710b709 | 662 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
663 | else |
664 | { | |
665 | if (size < 0) | |
666 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
667 | else | |
668 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
669 | } | |
afedecd3 | 670 | |
23a7fe75 | 671 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
672 | do_cleanups (uiout_cleanup); |
673 | } | |
674 | ||
675 | /* The to_call_history_range method of target record-btrace. */ | |
676 | ||
677 | static void | |
678 | record_btrace_call_history_range (ULONGEST from, ULONGEST to, int flags) | |
679 | { | |
680 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
681 | struct btrace_call_history *history; |
682 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
683 | struct cleanup *uiout_cleanup; |
684 | struct ui_out *uiout; | |
23a7fe75 MM |
685 | unsigned int low, high; |
686 | int found; | |
afedecd3 MM |
687 | |
688 | uiout = current_uiout; | |
689 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
690 | "func history"); | |
23a7fe75 MM |
691 | low = from; |
692 | high = to; | |
afedecd3 | 693 | |
23a7fe75 | 694 | DEBUG ("call-history (0x%x): [%u; %u)", flags, low, high); |
afedecd3 MM |
695 | |
696 | /* Check for wrap-arounds. */ | |
23a7fe75 | 697 | if (low != from || high != to) |
afedecd3 MM |
698 | error (_("Bad range.")); |
699 | ||
0688d04e | 700 | if (high < low) |
afedecd3 MM |
701 | error (_("Bad range.")); |
702 | ||
23a7fe75 | 703 | btinfo = require_btrace (); |
afedecd3 | 704 | |
23a7fe75 MM |
705 | found = btrace_find_call_by_number (&begin, btinfo, low); |
706 | if (found == 0) | |
707 | error (_("Range out of bounds.")); | |
afedecd3 | 708 | |
23a7fe75 MM |
709 | found = btrace_find_call_by_number (&end, btinfo, high); |
710 | if (found == 0) | |
0688d04e MM |
711 | { |
712 | /* Silently truncate the range. */ | |
713 | btrace_call_end (&end, btinfo); | |
714 | } | |
715 | else | |
716 | { | |
717 | /* We want both begin and end to be inclusive. */ | |
718 | btrace_call_next (&end, 1); | |
719 | } | |
afedecd3 | 720 | |
8710b709 | 721 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 722 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
723 | |
724 | do_cleanups (uiout_cleanup); | |
725 | } | |
726 | ||
727 | /* The to_call_history_from method of target record-btrace. */ | |
728 | ||
729 | static void | |
730 | record_btrace_call_history_from (ULONGEST from, int size, int flags) | |
731 | { | |
732 | ULONGEST begin, end, context; | |
733 | ||
734 | context = abs (size); | |
0688d04e MM |
735 | if (context == 0) |
736 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
737 | |
738 | if (size < 0) | |
739 | { | |
740 | end = from; | |
741 | ||
742 | if (from < context) | |
743 | begin = 0; | |
744 | else | |
0688d04e | 745 | begin = from - context + 1; |
afedecd3 MM |
746 | } |
747 | else | |
748 | { | |
749 | begin = from; | |
0688d04e | 750 | end = from + context - 1; |
afedecd3 MM |
751 | |
752 | /* Check for wrap-around. */ | |
753 | if (end < begin) | |
754 | end = ULONGEST_MAX; | |
755 | } | |
756 | ||
757 | record_btrace_call_history_range (begin, end, flags); | |
758 | } | |
759 | ||
07bbe694 MM |
760 | /* The to_record_is_replaying method of target record-btrace. */ |
761 | ||
762 | static int | |
763 | record_btrace_is_replaying (void) | |
764 | { | |
765 | struct thread_info *tp; | |
766 | ||
767 | ALL_THREADS (tp) | |
768 | if (btrace_is_replaying (tp)) | |
769 | return 1; | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
633785ff MM |
774 | /* The to_xfer_partial method of target record-btrace. */ |
775 | ||
776 | static LONGEST | |
777 | record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, | |
778 | const char *annex, gdb_byte *readbuf, | |
779 | const gdb_byte *writebuf, ULONGEST offset, | |
780 | ULONGEST len) | |
781 | { | |
782 | struct target_ops *t; | |
783 | ||
784 | /* Filter out requests that don't make sense during replay. */ | |
785 | if (!record_btrace_allow_memory_access && record_btrace_is_replaying ()) | |
786 | { | |
787 | switch (object) | |
788 | { | |
789 | case TARGET_OBJECT_MEMORY: | |
790 | { | |
791 | struct target_section *section; | |
792 | ||
793 | /* We do not allow writing memory in general. */ | |
794 | if (writebuf != NULL) | |
795 | return TARGET_XFER_E_UNAVAILABLE; | |
796 | ||
797 | /* We allow reading readonly memory. */ | |
798 | section = target_section_by_addr (ops, offset); | |
799 | if (section != NULL) | |
800 | { | |
801 | /* Check if the section we found is readonly. */ | |
802 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
803 | section->the_bfd_section) | |
804 | & SEC_READONLY) != 0) | |
805 | { | |
806 | /* Truncate the request to fit into this section. */ | |
807 | len = min (len, section->endaddr - offset); | |
808 | break; | |
809 | } | |
810 | } | |
811 | ||
812 | return TARGET_XFER_E_UNAVAILABLE; | |
813 | } | |
814 | } | |
815 | } | |
816 | ||
817 | /* Forward the request. */ | |
818 | for (ops = ops->beneath; ops != NULL; ops = ops->beneath) | |
819 | if (ops->to_xfer_partial != NULL) | |
820 | return ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, | |
821 | offset, len); | |
822 | ||
823 | return TARGET_XFER_E_UNAVAILABLE; | |
824 | } | |
825 | ||
826 | /* The to_insert_breakpoint method of target record-btrace. */ | |
827 | ||
828 | static int | |
829 | record_btrace_insert_breakpoint (struct target_ops *ops, | |
830 | struct gdbarch *gdbarch, | |
831 | struct bp_target_info *bp_tgt) | |
832 | { | |
833 | volatile struct gdb_exception except; | |
834 | int old, ret; | |
835 | ||
836 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
837 | duration of this function. */ | |
838 | old = record_btrace_allow_memory_access; | |
839 | record_btrace_allow_memory_access = 1; | |
840 | ||
841 | ret = 0; | |
842 | TRY_CATCH (except, RETURN_MASK_ALL) | |
843 | ret = forward_target_insert_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
844 | ||
845 | record_btrace_allow_memory_access = old; | |
846 | ||
847 | if (except.reason < 0) | |
848 | throw_exception (except); | |
849 | ||
850 | return ret; | |
851 | } | |
852 | ||
853 | /* The to_remove_breakpoint method of target record-btrace. */ | |
854 | ||
855 | static int | |
856 | record_btrace_remove_breakpoint (struct target_ops *ops, | |
857 | struct gdbarch *gdbarch, | |
858 | struct bp_target_info *bp_tgt) | |
859 | { | |
860 | volatile struct gdb_exception except; | |
861 | int old, ret; | |
862 | ||
863 | /* Removing breakpoints requires accessing memory. Allow it for the | |
864 | duration of this function. */ | |
865 | old = record_btrace_allow_memory_access; | |
866 | record_btrace_allow_memory_access = 1; | |
867 | ||
868 | ret = 0; | |
869 | TRY_CATCH (except, RETURN_MASK_ALL) | |
870 | ret = forward_target_remove_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
871 | ||
872 | record_btrace_allow_memory_access = old; | |
873 | ||
874 | if (except.reason < 0) | |
875 | throw_exception (except); | |
876 | ||
877 | return ret; | |
878 | } | |
879 | ||
1f3ef581 MM |
880 | /* The to_fetch_registers method of target record-btrace. */ |
881 | ||
882 | static void | |
883 | record_btrace_fetch_registers (struct target_ops *ops, | |
884 | struct regcache *regcache, int regno) | |
885 | { | |
886 | struct btrace_insn_iterator *replay; | |
887 | struct thread_info *tp; | |
888 | ||
889 | tp = find_thread_ptid (inferior_ptid); | |
890 | gdb_assert (tp != NULL); | |
891 | ||
892 | replay = tp->btrace.replay; | |
893 | if (replay != NULL) | |
894 | { | |
895 | const struct btrace_insn *insn; | |
896 | struct gdbarch *gdbarch; | |
897 | int pcreg; | |
898 | ||
899 | gdbarch = get_regcache_arch (regcache); | |
900 | pcreg = gdbarch_pc_regnum (gdbarch); | |
901 | if (pcreg < 0) | |
902 | return; | |
903 | ||
904 | /* We can only provide the PC register. */ | |
905 | if (regno >= 0 && regno != pcreg) | |
906 | return; | |
907 | ||
908 | insn = btrace_insn_get (replay); | |
909 | gdb_assert (insn != NULL); | |
910 | ||
911 | regcache_raw_supply (regcache, regno, &insn->pc); | |
912 | } | |
913 | else | |
914 | { | |
915 | struct target_ops *t; | |
916 | ||
917 | for (t = ops->beneath; t != NULL; t = t->beneath) | |
918 | if (t->to_fetch_registers != NULL) | |
919 | { | |
920 | t->to_fetch_registers (t, regcache, regno); | |
921 | break; | |
922 | } | |
923 | } | |
924 | } | |
925 | ||
926 | /* The to_store_registers method of target record-btrace. */ | |
927 | ||
928 | static void | |
929 | record_btrace_store_registers (struct target_ops *ops, | |
930 | struct regcache *regcache, int regno) | |
931 | { | |
932 | struct target_ops *t; | |
933 | ||
934 | if (record_btrace_is_replaying ()) | |
935 | error (_("This record target does not allow writing registers.")); | |
936 | ||
937 | gdb_assert (may_write_registers != 0); | |
938 | ||
939 | for (t = ops->beneath; t != NULL; t = t->beneath) | |
940 | if (t->to_store_registers != NULL) | |
941 | { | |
942 | t->to_store_registers (t, regcache, regno); | |
943 | return; | |
944 | } | |
945 | ||
946 | noprocess (); | |
947 | } | |
948 | ||
949 | /* The to_prepare_to_store method of target record-btrace. */ | |
950 | ||
951 | static void | |
952 | record_btrace_prepare_to_store (struct target_ops *ops, | |
953 | struct regcache *regcache) | |
954 | { | |
955 | struct target_ops *t; | |
956 | ||
957 | if (record_btrace_is_replaying ()) | |
958 | return; | |
959 | ||
960 | for (t = ops->beneath; t != NULL; t = t->beneath) | |
961 | if (t->to_prepare_to_store != NULL) | |
962 | { | |
963 | t->to_prepare_to_store (t, regcache); | |
964 | return; | |
965 | } | |
966 | } | |
967 | ||
cecac1ab MM |
968 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
969 | ||
970 | static enum unwind_stop_reason | |
971 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
972 | void **this_cache) | |
973 | { | |
974 | return UNWIND_UNAVAILABLE; | |
975 | } | |
976 | ||
977 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
978 | ||
979 | static void | |
980 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
981 | struct frame_id *this_id) | |
982 | { | |
983 | /* Leave there the outer_frame_id value. */ | |
984 | } | |
985 | ||
986 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
987 | ||
988 | static struct value * | |
989 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
990 | void **this_cache, | |
991 | int regnum) | |
992 | { | |
993 | throw_error (NOT_AVAILABLE_ERROR, | |
994 | _("Registers are not available in btrace record history")); | |
995 | } | |
996 | ||
997 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
998 | ||
999 | static int | |
1000 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1001 | struct frame_info *this_frame, | |
1002 | void **this_cache) | |
1003 | { | |
1004 | struct thread_info *tp; | |
1005 | struct btrace_thread_info *btinfo; | |
1006 | struct btrace_insn_iterator *replay; | |
1007 | ||
1008 | /* THIS_FRAME does not contain a reference to its thread. */ | |
1009 | tp = find_thread_ptid (inferior_ptid); | |
1010 | gdb_assert (tp != NULL); | |
1011 | ||
1012 | return btrace_is_replaying (tp); | |
1013 | } | |
1014 | ||
1015 | /* btrace recording does not store previous memory content, neither the stack | |
1016 | frames content. Any unwinding would return errorneous results as the stack | |
1017 | contents no longer matches the changed PC value restored from history. | |
1018 | Therefore this unwinder reports any possibly unwound registers as | |
1019 | <unavailable>. */ | |
1020 | ||
1021 | static const struct frame_unwind record_btrace_frame_unwind = | |
1022 | { | |
1023 | NORMAL_FRAME, | |
1024 | record_btrace_frame_unwind_stop_reason, | |
1025 | record_btrace_frame_this_id, | |
1026 | record_btrace_frame_prev_register, | |
1027 | NULL, | |
1028 | record_btrace_frame_sniffer | |
1029 | }; | |
b2f4cfde MM |
1030 | |
1031 | /* The to_resume method of target record-btrace. */ | |
1032 | ||
1033 | static void | |
1034 | record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, | |
1035 | enum gdb_signal signal) | |
1036 | { | |
1037 | /* As long as we're not replaying, just forward the request. */ | |
1038 | if (!record_btrace_is_replaying ()) | |
1039 | { | |
1040 | for (ops = ops->beneath; ops != NULL; ops = ops->beneath) | |
1041 | if (ops->to_resume != NULL) | |
1042 | return ops->to_resume (ops, ptid, step, signal); | |
1043 | ||
1044 | error (_("Cannot find target for stepping.")); | |
1045 | } | |
1046 | ||
1047 | error (_("You can't do this from here. Do 'record goto end', first.")); | |
1048 | } | |
1049 | ||
1050 | /* The to_wait method of target record-btrace. */ | |
1051 | ||
1052 | static ptid_t | |
1053 | record_btrace_wait (struct target_ops *ops, ptid_t ptid, | |
1054 | struct target_waitstatus *status, int options) | |
1055 | { | |
1056 | /* As long as we're not replaying, just forward the request. */ | |
1057 | if (!record_btrace_is_replaying ()) | |
1058 | { | |
1059 | for (ops = ops->beneath; ops != NULL; ops = ops->beneath) | |
1060 | if (ops->to_wait != NULL) | |
1061 | return ops->to_wait (ops, ptid, status, options); | |
1062 | ||
1063 | error (_("Cannot find target for waiting.")); | |
1064 | } | |
1065 | ||
1066 | error (_("You can't do this from here. Do 'record goto end', first.")); | |
1067 | } | |
1068 | ||
e2887aa3 MM |
1069 | /* The to_find_new_threads method of target record-btrace. */ |
1070 | ||
1071 | static void | |
1072 | record_btrace_find_new_threads (struct target_ops *ops) | |
1073 | { | |
1074 | /* Don't expect new threads if we're replaying. */ | |
1075 | if (record_btrace_is_replaying ()) | |
1076 | return; | |
1077 | ||
1078 | /* Forward the request. */ | |
1079 | for (ops = ops->beneath; ops != NULL; ops = ops->beneath) | |
1080 | if (ops->to_find_new_threads != NULL) | |
1081 | { | |
1082 | ops->to_find_new_threads (ops); | |
1083 | break; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | /* The to_thread_alive method of target record-btrace. */ | |
1088 | ||
1089 | static int | |
1090 | record_btrace_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1091 | { | |
1092 | /* We don't add or remove threads during replay. */ | |
1093 | if (record_btrace_is_replaying ()) | |
1094 | return find_thread_ptid (ptid) != NULL; | |
1095 | ||
1096 | /* Forward the request. */ | |
1097 | for (ops = ops->beneath; ops != NULL; ops = ops->beneath) | |
1098 | if (ops->to_thread_alive != NULL) | |
1099 | return ops->to_thread_alive (ops, ptid); | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
066ce621 MM |
1104 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
1105 | is stopped. */ | |
1106 | ||
1107 | static void | |
1108 | record_btrace_set_replay (struct thread_info *tp, | |
1109 | const struct btrace_insn_iterator *it) | |
1110 | { | |
1111 | struct btrace_thread_info *btinfo; | |
1112 | ||
1113 | btinfo = &tp->btrace; | |
1114 | ||
1115 | if (it == NULL || it->function == NULL) | |
1116 | { | |
1117 | if (btinfo->replay == NULL) | |
1118 | return; | |
1119 | ||
1120 | xfree (btinfo->replay); | |
1121 | btinfo->replay = NULL; | |
1122 | } | |
1123 | else | |
1124 | { | |
1125 | if (btinfo->replay == NULL) | |
1126 | btinfo->replay = xmalloc (sizeof (*btinfo->replay)); | |
1127 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) | |
1128 | return; | |
1129 | ||
1130 | *btinfo->replay = *it; | |
1131 | } | |
1132 | ||
1133 | /* Clear the function call and instruction histories so we start anew | |
1134 | from the new replay position. */ | |
1135 | xfree (btinfo->insn_history); | |
1136 | xfree (btinfo->call_history); | |
1137 | ||
1138 | btinfo->insn_history = NULL; | |
1139 | btinfo->call_history = NULL; | |
1140 | ||
1141 | registers_changed_ptid (tp->ptid); | |
1142 | } | |
1143 | ||
1144 | /* The to_goto_record_begin method of target record-btrace. */ | |
1145 | ||
1146 | static void | |
1147 | record_btrace_goto_begin (void) | |
1148 | { | |
1149 | struct thread_info *tp; | |
1150 | struct btrace_insn_iterator begin; | |
1151 | ||
1152 | tp = require_btrace_thread (); | |
1153 | ||
1154 | btrace_insn_begin (&begin, &tp->btrace); | |
1155 | record_btrace_set_replay (tp, &begin); | |
1156 | ||
1157 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
1158 | } | |
1159 | ||
1160 | /* The to_goto_record_end method of target record-btrace. */ | |
1161 | ||
1162 | static void | |
1163 | record_btrace_goto_end (void) | |
1164 | { | |
1165 | struct thread_info *tp; | |
1166 | ||
1167 | tp = require_btrace_thread (); | |
1168 | ||
1169 | record_btrace_set_replay (tp, NULL); | |
1170 | ||
1171 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
1172 | } | |
1173 | ||
1174 | /* The to_goto_record method of target record-btrace. */ | |
1175 | ||
1176 | static void | |
1177 | record_btrace_goto (ULONGEST insn) | |
1178 | { | |
1179 | struct thread_info *tp; | |
1180 | struct btrace_insn_iterator it; | |
1181 | unsigned int number; | |
1182 | int found; | |
1183 | ||
1184 | number = insn; | |
1185 | ||
1186 | /* Check for wrap-arounds. */ | |
1187 | if (number != insn) | |
1188 | error (_("Instruction number out of range.")); | |
1189 | ||
1190 | tp = require_btrace_thread (); | |
1191 | ||
1192 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
1193 | if (found == 0) | |
1194 | error (_("No such instruction.")); | |
1195 | ||
1196 | record_btrace_set_replay (tp, &it); | |
1197 | ||
1198 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
1199 | } | |
1200 | ||
afedecd3 MM |
1201 | /* Initialize the record-btrace target ops. */ |
1202 | ||
1203 | static void | |
1204 | init_record_btrace_ops (void) | |
1205 | { | |
1206 | struct target_ops *ops; | |
1207 | ||
1208 | ops = &record_btrace_ops; | |
1209 | ops->to_shortname = "record-btrace"; | |
1210 | ops->to_longname = "Branch tracing target"; | |
1211 | ops->to_doc = "Collect control-flow trace and provide the execution history."; | |
1212 | ops->to_open = record_btrace_open; | |
1213 | ops->to_close = record_btrace_close; | |
1214 | ops->to_detach = record_detach; | |
1215 | ops->to_disconnect = record_disconnect; | |
1216 | ops->to_mourn_inferior = record_mourn_inferior; | |
1217 | ops->to_kill = record_kill; | |
1218 | ops->to_create_inferior = find_default_create_inferior; | |
1219 | ops->to_stop_recording = record_btrace_stop_recording; | |
1220 | ops->to_info_record = record_btrace_info; | |
1221 | ops->to_insn_history = record_btrace_insn_history; | |
1222 | ops->to_insn_history_from = record_btrace_insn_history_from; | |
1223 | ops->to_insn_history_range = record_btrace_insn_history_range; | |
1224 | ops->to_call_history = record_btrace_call_history; | |
1225 | ops->to_call_history_from = record_btrace_call_history_from; | |
1226 | ops->to_call_history_range = record_btrace_call_history_range; | |
07bbe694 | 1227 | ops->to_record_is_replaying = record_btrace_is_replaying; |
633785ff MM |
1228 | ops->to_xfer_partial = record_btrace_xfer_partial; |
1229 | ops->to_remove_breakpoint = record_btrace_remove_breakpoint; | |
1230 | ops->to_insert_breakpoint = record_btrace_insert_breakpoint; | |
1f3ef581 MM |
1231 | ops->to_fetch_registers = record_btrace_fetch_registers; |
1232 | ops->to_store_registers = record_btrace_store_registers; | |
1233 | ops->to_prepare_to_store = record_btrace_prepare_to_store; | |
cecac1ab | 1234 | ops->to_get_unwinder = &record_btrace_frame_unwind; |
b2f4cfde MM |
1235 | ops->to_resume = record_btrace_resume; |
1236 | ops->to_wait = record_btrace_wait; | |
e2887aa3 MM |
1237 | ops->to_find_new_threads = record_btrace_find_new_threads; |
1238 | ops->to_thread_alive = record_btrace_thread_alive; | |
066ce621 MM |
1239 | ops->to_goto_record_begin = record_btrace_goto_begin; |
1240 | ops->to_goto_record_end = record_btrace_goto_end; | |
1241 | ops->to_goto_record = record_btrace_goto; | |
afedecd3 MM |
1242 | ops->to_stratum = record_stratum; |
1243 | ops->to_magic = OPS_MAGIC; | |
1244 | } | |
1245 | ||
1246 | /* Alias for "target record". */ | |
1247 | ||
1248 | static void | |
1249 | cmd_record_btrace_start (char *args, int from_tty) | |
1250 | { | |
1251 | if (args != NULL && *args != 0) | |
1252 | error (_("Invalid argument.")); | |
1253 | ||
1254 | execute_command ("target record-btrace", from_tty); | |
1255 | } | |
1256 | ||
1257 | void _initialize_record_btrace (void); | |
1258 | ||
1259 | /* Initialize btrace commands. */ | |
1260 | ||
1261 | void | |
1262 | _initialize_record_btrace (void) | |
1263 | { | |
1264 | add_cmd ("btrace", class_obscure, cmd_record_btrace_start, | |
1265 | _("Start branch trace recording."), | |
1266 | &record_cmdlist); | |
1267 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); | |
1268 | ||
1269 | init_record_btrace_ops (); | |
1270 | add_target (&record_btrace_ops); | |
1271 | } |