]>
Commit | Line | Data |
---|---|---|
afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
3 | Copyright (C) 2013 Free Software Foundation, Inc. | |
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" | |
35 | ||
36 | /* The target_ops of record-btrace. */ | |
37 | static struct target_ops record_btrace_ops; | |
38 | ||
39 | /* A new thread observer enabling branch tracing for the new thread. */ | |
40 | static struct observer *record_btrace_thread_observer; | |
41 | ||
42 | /* Print a record-btrace debug message. Use do ... while (0) to avoid | |
43 | ambiguities when used in if statements. */ | |
44 | ||
45 | #define DEBUG(msg, args...) \ | |
46 | do \ | |
47 | { \ | |
48 | if (record_debug != 0) \ | |
49 | fprintf_unfiltered (gdb_stdlog, \ | |
50 | "[record-btrace] " msg "\n", ##args); \ | |
51 | } \ | |
52 | while (0) | |
53 | ||
54 | ||
55 | /* Update the branch trace for the current thread and return a pointer to its | |
56 | branch trace information struct. | |
57 | ||
58 | Throws an error if there is no thread or no trace. This function never | |
59 | returns NULL. */ | |
60 | ||
61 | static struct btrace_thread_info * | |
62 | require_btrace (void) | |
63 | { | |
64 | struct thread_info *tp; | |
65 | struct btrace_thread_info *btinfo; | |
66 | ||
67 | DEBUG ("require"); | |
68 | ||
69 | tp = find_thread_ptid (inferior_ptid); | |
70 | if (tp == NULL) | |
71 | error (_("No thread.")); | |
72 | ||
73 | btrace_fetch (tp); | |
74 | ||
75 | btinfo = &tp->btrace; | |
76 | ||
77 | if (VEC_empty (btrace_inst_s, btinfo->itrace)) | |
78 | error (_("No trace.")); | |
79 | ||
80 | return btinfo; | |
81 | } | |
82 | ||
83 | /* Enable branch tracing for one thread. Warn on errors. */ | |
84 | ||
85 | static void | |
86 | record_btrace_enable_warn (struct thread_info *tp) | |
87 | { | |
88 | volatile struct gdb_exception error; | |
89 | ||
90 | TRY_CATCH (error, RETURN_MASK_ERROR) | |
91 | btrace_enable (tp); | |
92 | ||
93 | if (error.message != NULL) | |
94 | warning ("%s", error.message); | |
95 | } | |
96 | ||
97 | /* Callback function to disable branch tracing for one thread. */ | |
98 | ||
99 | static void | |
100 | record_btrace_disable_callback (void *arg) | |
101 | { | |
102 | struct thread_info *tp; | |
103 | ||
104 | tp = arg; | |
105 | ||
106 | btrace_disable (tp); | |
107 | } | |
108 | ||
109 | /* Enable automatic tracing of new threads. */ | |
110 | ||
111 | static void | |
112 | record_btrace_auto_enable (void) | |
113 | { | |
114 | DEBUG ("attach thread observer"); | |
115 | ||
116 | record_btrace_thread_observer | |
117 | = observer_attach_new_thread (record_btrace_enable_warn); | |
118 | } | |
119 | ||
120 | /* Disable automatic tracing of new threads. */ | |
121 | ||
122 | static void | |
123 | record_btrace_auto_disable (void) | |
124 | { | |
125 | /* The observer may have been detached, already. */ | |
126 | if (record_btrace_thread_observer == NULL) | |
127 | return; | |
128 | ||
129 | DEBUG ("detach thread observer"); | |
130 | ||
131 | observer_detach_new_thread (record_btrace_thread_observer); | |
132 | record_btrace_thread_observer = NULL; | |
133 | } | |
134 | ||
135 | /* The to_open method of target record-btrace. */ | |
136 | ||
137 | static void | |
138 | record_btrace_open (char *args, int from_tty) | |
139 | { | |
140 | struct cleanup *disable_chain; | |
141 | struct thread_info *tp; | |
142 | ||
143 | DEBUG ("open"); | |
144 | ||
145 | if (RECORD_IS_USED) | |
146 | error (_("The process is already being recorded.")); | |
147 | ||
148 | if (!target_has_execution) | |
149 | error (_("The program is not being run.")); | |
150 | ||
151 | if (!target_supports_btrace ()) | |
152 | error (_("Target does not support branch tracing.")); | |
153 | ||
154 | gdb_assert (record_btrace_thread_observer == NULL); | |
155 | ||
156 | disable_chain = make_cleanup (null_cleanup, NULL); | |
157 | ALL_THREADS (tp) | |
158 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->num)) | |
159 | { | |
160 | btrace_enable (tp); | |
161 | ||
162 | make_cleanup (record_btrace_disable_callback, tp); | |
163 | } | |
164 | ||
165 | record_btrace_auto_enable (); | |
166 | ||
167 | push_target (&record_btrace_ops); | |
168 | ||
169 | observer_notify_record_changed (current_inferior (), 1); | |
170 | ||
171 | discard_cleanups (disable_chain); | |
172 | } | |
173 | ||
174 | /* The to_stop_recording method of target record-btrace. */ | |
175 | ||
176 | static void | |
177 | record_btrace_stop_recording (void) | |
178 | { | |
179 | struct thread_info *tp; | |
180 | ||
181 | DEBUG ("stop recording"); | |
182 | ||
183 | record_btrace_auto_disable (); | |
184 | ||
185 | ALL_THREADS (tp) | |
186 | if (tp->btrace.target != NULL) | |
187 | btrace_disable (tp); | |
188 | } | |
189 | ||
190 | /* The to_close method of target record-btrace. */ | |
191 | ||
192 | static void | |
460014f5 | 193 | record_btrace_close (void) |
afedecd3 MM |
194 | { |
195 | /* We already stopped recording. */ | |
196 | } | |
197 | ||
198 | /* The to_info_record method of target record-btrace. */ | |
199 | ||
200 | static void | |
201 | record_btrace_info (void) | |
202 | { | |
203 | struct btrace_thread_info *btinfo; | |
204 | struct thread_info *tp; | |
205 | unsigned int insts, funcs; | |
206 | ||
207 | DEBUG ("info"); | |
208 | ||
209 | tp = find_thread_ptid (inferior_ptid); | |
210 | if (tp == NULL) | |
211 | error (_("No thread.")); | |
212 | ||
213 | btrace_fetch (tp); | |
214 | ||
215 | btinfo = &tp->btrace; | |
216 | insts = VEC_length (btrace_inst_s, btinfo->itrace); | |
217 | funcs = VEC_length (btrace_func_s, btinfo->ftrace); | |
218 | ||
219 | printf_unfiltered (_("Recorded %u instructions in %u functions for thread " | |
220 | "%d (%s).\n"), insts, funcs, tp->num, | |
221 | target_pid_to_str (tp->ptid)); | |
222 | } | |
223 | ||
224 | /* Print an unsigned int. */ | |
225 | ||
226 | static void | |
227 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
228 | { | |
229 | ui_out_field_fmt (uiout, fld, "%u", val); | |
230 | } | |
231 | ||
232 | /* Disassemble a section of the recorded instruction trace. */ | |
233 | ||
234 | static void | |
235 | btrace_insn_history (struct btrace_thread_info *btinfo, struct ui_out *uiout, | |
236 | unsigned int begin, unsigned int end, int flags) | |
237 | { | |
238 | struct gdbarch *gdbarch; | |
239 | struct btrace_inst *inst; | |
240 | unsigned int idx; | |
241 | ||
242 | DEBUG ("itrace (0x%x): [%u; %u[", flags, begin, end); | |
243 | ||
244 | gdbarch = target_gdbarch (); | |
245 | ||
246 | for (idx = begin; VEC_iterate (btrace_inst_s, btinfo->itrace, idx, inst) | |
247 | && idx < end; ++idx) | |
248 | { | |
249 | /* Print the instruction index. */ | |
250 | ui_out_field_uint (uiout, "index", idx); | |
251 | ui_out_text (uiout, "\t"); | |
252 | ||
253 | /* Disassembly with '/m' flag may not produce the expected result. | |
254 | See PR gdb/11833. */ | |
255 | gdb_disassembly (gdbarch, uiout, NULL, flags, 1, inst->pc, inst->pc + 1); | |
256 | } | |
257 | } | |
258 | ||
259 | /* The to_insn_history method of target record-btrace. */ | |
260 | ||
261 | static void | |
262 | record_btrace_insn_history (int size, int flags) | |
263 | { | |
264 | struct btrace_thread_info *btinfo; | |
265 | struct cleanup *uiout_cleanup; | |
266 | struct ui_out *uiout; | |
267 | unsigned int context, last, begin, end; | |
268 | ||
269 | uiout = current_uiout; | |
270 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
271 | "insn history"); | |
272 | btinfo = require_btrace (); | |
273 | last = VEC_length (btrace_inst_s, btinfo->itrace); | |
274 | ||
275 | context = abs (size); | |
276 | begin = btinfo->insn_iterator.begin; | |
277 | end = btinfo->insn_iterator.end; | |
278 | ||
279 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u[", flags, size, begin, end); | |
280 | ||
281 | if (context == 0) | |
282 | error (_("Bad record instruction-history-size.")); | |
283 | ||
284 | /* We start at the end. */ | |
285 | if (end < begin) | |
286 | { | |
287 | /* Truncate the context, if necessary. */ | |
288 | context = min (context, last); | |
289 | ||
290 | end = last; | |
291 | begin = end - context; | |
292 | } | |
293 | else if (size < 0) | |
294 | { | |
295 | if (begin == 0) | |
296 | { | |
297 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
298 | ||
299 | btinfo->insn_iterator.end = 0; | |
300 | return; | |
301 | } | |
302 | ||
303 | /* Truncate the context, if necessary. */ | |
304 | context = min (context, begin); | |
305 | ||
306 | end = begin; | |
307 | begin -= context; | |
308 | } | |
309 | else | |
310 | { | |
311 | if (end == last) | |
312 | { | |
313 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
314 | ||
315 | btinfo->insn_iterator.begin = last; | |
316 | return; | |
317 | } | |
318 | ||
319 | /* Truncate the context, if necessary. */ | |
320 | context = min (context, last - end); | |
321 | ||
322 | begin = end; | |
323 | end += context; | |
324 | } | |
325 | ||
326 | btrace_insn_history (btinfo, uiout, begin, end, flags); | |
327 | ||
328 | btinfo->insn_iterator.begin = begin; | |
329 | btinfo->insn_iterator.end = end; | |
330 | ||
331 | do_cleanups (uiout_cleanup); | |
332 | } | |
333 | ||
334 | /* The to_insn_history_range method of target record-btrace. */ | |
335 | ||
336 | static void | |
337 | record_btrace_insn_history_range (ULONGEST from, ULONGEST to, int flags) | |
338 | { | |
339 | struct btrace_thread_info *btinfo; | |
340 | struct cleanup *uiout_cleanup; | |
341 | struct ui_out *uiout; | |
342 | unsigned int last, begin, end; | |
343 | ||
344 | uiout = current_uiout; | |
345 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
346 | "insn history"); | |
347 | btinfo = require_btrace (); | |
348 | last = VEC_length (btrace_inst_s, btinfo->itrace); | |
349 | ||
350 | begin = (unsigned int) from; | |
351 | end = (unsigned int) to; | |
352 | ||
353 | DEBUG ("insn-history (0x%x): [%u; %u[", flags, begin, end); | |
354 | ||
355 | /* Check for wrap-arounds. */ | |
356 | if (begin != from || end != to) | |
357 | error (_("Bad range.")); | |
358 | ||
359 | if (end <= begin) | |
360 | error (_("Bad range.")); | |
361 | ||
362 | if (last <= begin) | |
363 | error (_("Range out of bounds.")); | |
364 | ||
365 | /* Truncate the range, if necessary. */ | |
366 | if (last < end) | |
367 | end = last; | |
368 | ||
369 | btrace_insn_history (btinfo, uiout, begin, end, flags); | |
370 | ||
371 | btinfo->insn_iterator.begin = begin; | |
372 | btinfo->insn_iterator.end = end; | |
373 | ||
374 | do_cleanups (uiout_cleanup); | |
375 | } | |
376 | ||
377 | /* The to_insn_history_from method of target record-btrace. */ | |
378 | ||
379 | static void | |
380 | record_btrace_insn_history_from (ULONGEST from, int size, int flags) | |
381 | { | |
382 | ULONGEST begin, end, context; | |
383 | ||
384 | context = abs (size); | |
385 | ||
386 | if (size < 0) | |
387 | { | |
388 | end = from; | |
389 | ||
390 | if (from < context) | |
391 | begin = 0; | |
392 | else | |
393 | begin = from - context; | |
394 | } | |
395 | else | |
396 | { | |
397 | begin = from; | |
398 | end = from + context; | |
399 | ||
400 | /* Check for wrap-around. */ | |
401 | if (end < begin) | |
402 | end = ULONGEST_MAX; | |
403 | } | |
404 | ||
405 | record_btrace_insn_history_range (begin, end, flags); | |
406 | } | |
407 | ||
408 | /* Print the instruction number range for a function call history line. */ | |
409 | ||
410 | static void | |
411 | btrace_func_history_insn_range (struct ui_out *uiout, struct btrace_func *bfun) | |
412 | { | |
413 | ui_out_field_uint (uiout, "insn begin", bfun->ibegin); | |
414 | ||
415 | if (bfun->ibegin == bfun->iend) | |
416 | return; | |
417 | ||
418 | ui_out_text (uiout, "-"); | |
419 | ui_out_field_uint (uiout, "insn end", bfun->iend); | |
420 | } | |
421 | ||
422 | /* Print the source line information for a function call history line. */ | |
423 | ||
424 | static void | |
425 | btrace_func_history_src_line (struct ui_out *uiout, struct btrace_func *bfun) | |
426 | { | |
427 | struct symbol *sym; | |
428 | ||
429 | sym = bfun->sym; | |
430 | if (sym == NULL) | |
431 | return; | |
432 | ||
433 | ui_out_field_string (uiout, "file", | |
434 | symtab_to_filename_for_display (sym->symtab)); | |
435 | ||
436 | if (bfun->lend == 0) | |
437 | return; | |
438 | ||
439 | ui_out_text (uiout, ":"); | |
440 | ui_out_field_int (uiout, "min line", bfun->lbegin); | |
441 | ||
442 | if (bfun->lend == bfun->lbegin) | |
443 | return; | |
444 | ||
445 | ui_out_text (uiout, "-"); | |
446 | ui_out_field_int (uiout, "max line", bfun->lend); | |
447 | } | |
448 | ||
449 | /* Disassemble a section of the recorded function trace. */ | |
450 | ||
451 | static void | |
452 | btrace_func_history (struct btrace_thread_info *btinfo, struct ui_out *uiout, | |
453 | unsigned int begin, unsigned int end, | |
454 | enum record_print_flag flags) | |
455 | { | |
456 | struct btrace_func *bfun; | |
457 | unsigned int idx; | |
458 | ||
459 | DEBUG ("ftrace (0x%x): [%u; %u[", flags, begin, end); | |
460 | ||
461 | for (idx = begin; VEC_iterate (btrace_func_s, btinfo->ftrace, idx, bfun) | |
462 | && idx < end; ++idx) | |
463 | { | |
464 | /* Print the function index. */ | |
465 | ui_out_field_uint (uiout, "index", idx); | |
466 | ui_out_text (uiout, "\t"); | |
467 | ||
468 | if ((flags & record_print_insn_range) != 0) | |
469 | { | |
470 | btrace_func_history_insn_range (uiout, bfun); | |
471 | ui_out_text (uiout, "\t"); | |
472 | } | |
473 | ||
474 | if ((flags & record_print_src_line) != 0) | |
475 | { | |
476 | btrace_func_history_src_line (uiout, bfun); | |
477 | ui_out_text (uiout, "\t"); | |
478 | } | |
479 | ||
480 | if (bfun->sym != NULL) | |
481 | ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (bfun->sym)); | |
482 | else if (bfun->msym != NULL) | |
483 | ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (bfun->msym)); | |
484 | ui_out_text (uiout, "\n"); | |
485 | } | |
486 | } | |
487 | ||
488 | /* The to_call_history method of target record-btrace. */ | |
489 | ||
490 | static void | |
491 | record_btrace_call_history (int size, int flags) | |
492 | { | |
493 | struct btrace_thread_info *btinfo; | |
494 | struct cleanup *uiout_cleanup; | |
495 | struct ui_out *uiout; | |
496 | unsigned int context, last, begin, end; | |
497 | ||
498 | uiout = current_uiout; | |
499 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
500 | "insn history"); | |
501 | btinfo = require_btrace (); | |
502 | last = VEC_length (btrace_func_s, btinfo->ftrace); | |
503 | ||
504 | context = abs (size); | |
505 | begin = btinfo->func_iterator.begin; | |
506 | end = btinfo->func_iterator.end; | |
507 | ||
508 | DEBUG ("func-history (0x%x): %d, prev: [%u; %u[", flags, size, begin, end); | |
509 | ||
510 | if (context == 0) | |
511 | error (_("Bad record function-call-history-size.")); | |
512 | ||
513 | /* We start at the end. */ | |
514 | if (end < begin) | |
515 | { | |
516 | /* Truncate the context, if necessary. */ | |
517 | context = min (context, last); | |
518 | ||
519 | end = last; | |
520 | begin = end - context; | |
521 | } | |
522 | else if (size < 0) | |
523 | { | |
524 | if (begin == 0) | |
525 | { | |
526 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
527 | ||
528 | btinfo->func_iterator.end = 0; | |
529 | return; | |
530 | } | |
531 | ||
532 | /* Truncate the context, if necessary. */ | |
533 | context = min (context, begin); | |
534 | ||
535 | end = begin; | |
536 | begin -= context; | |
537 | } | |
538 | else | |
539 | { | |
540 | if (end == last) | |
541 | { | |
542 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
543 | ||
544 | btinfo->func_iterator.begin = last; | |
545 | return; | |
546 | } | |
547 | ||
548 | /* Truncate the context, if necessary. */ | |
549 | context = min (context, last - end); | |
550 | ||
551 | begin = end; | |
552 | end += context; | |
553 | } | |
554 | ||
555 | btrace_func_history (btinfo, uiout, begin, end, flags); | |
556 | ||
557 | btinfo->func_iterator.begin = begin; | |
558 | btinfo->func_iterator.end = end; | |
559 | ||
560 | do_cleanups (uiout_cleanup); | |
561 | } | |
562 | ||
563 | /* The to_call_history_range method of target record-btrace. */ | |
564 | ||
565 | static void | |
566 | record_btrace_call_history_range (ULONGEST from, ULONGEST to, int flags) | |
567 | { | |
568 | struct btrace_thread_info *btinfo; | |
569 | struct cleanup *uiout_cleanup; | |
570 | struct ui_out *uiout; | |
571 | unsigned int last, begin, end; | |
572 | ||
573 | uiout = current_uiout; | |
574 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
575 | "func history"); | |
576 | btinfo = require_btrace (); | |
577 | last = VEC_length (btrace_func_s, btinfo->ftrace); | |
578 | ||
579 | begin = (unsigned int) from; | |
580 | end = (unsigned int) to; | |
581 | ||
582 | DEBUG ("func-history (0x%x): [%u; %u[", flags, begin, end); | |
583 | ||
584 | /* Check for wrap-arounds. */ | |
585 | if (begin != from || end != to) | |
586 | error (_("Bad range.")); | |
587 | ||
588 | if (end <= begin) | |
589 | error (_("Bad range.")); | |
590 | ||
591 | if (last <= begin) | |
592 | error (_("Range out of bounds.")); | |
593 | ||
594 | /* Truncate the range, if necessary. */ | |
595 | if (last < end) | |
596 | end = last; | |
597 | ||
598 | btrace_func_history (btinfo, uiout, begin, end, flags); | |
599 | ||
600 | btinfo->func_iterator.begin = begin; | |
601 | btinfo->func_iterator.end = end; | |
602 | ||
603 | do_cleanups (uiout_cleanup); | |
604 | } | |
605 | ||
606 | /* The to_call_history_from method of target record-btrace. */ | |
607 | ||
608 | static void | |
609 | record_btrace_call_history_from (ULONGEST from, int size, int flags) | |
610 | { | |
611 | ULONGEST begin, end, context; | |
612 | ||
613 | context = abs (size); | |
614 | ||
615 | if (size < 0) | |
616 | { | |
617 | end = from; | |
618 | ||
619 | if (from < context) | |
620 | begin = 0; | |
621 | else | |
622 | begin = from - context; | |
623 | } | |
624 | else | |
625 | { | |
626 | begin = from; | |
627 | end = from + context; | |
628 | ||
629 | /* Check for wrap-around. */ | |
630 | if (end < begin) | |
631 | end = ULONGEST_MAX; | |
632 | } | |
633 | ||
634 | record_btrace_call_history_range (begin, end, flags); | |
635 | } | |
636 | ||
637 | /* Initialize the record-btrace target ops. */ | |
638 | ||
639 | static void | |
640 | init_record_btrace_ops (void) | |
641 | { | |
642 | struct target_ops *ops; | |
643 | ||
644 | ops = &record_btrace_ops; | |
645 | ops->to_shortname = "record-btrace"; | |
646 | ops->to_longname = "Branch tracing target"; | |
647 | ops->to_doc = "Collect control-flow trace and provide the execution history."; | |
648 | ops->to_open = record_btrace_open; | |
649 | ops->to_close = record_btrace_close; | |
650 | ops->to_detach = record_detach; | |
651 | ops->to_disconnect = record_disconnect; | |
652 | ops->to_mourn_inferior = record_mourn_inferior; | |
653 | ops->to_kill = record_kill; | |
654 | ops->to_create_inferior = find_default_create_inferior; | |
655 | ops->to_stop_recording = record_btrace_stop_recording; | |
656 | ops->to_info_record = record_btrace_info; | |
657 | ops->to_insn_history = record_btrace_insn_history; | |
658 | ops->to_insn_history_from = record_btrace_insn_history_from; | |
659 | ops->to_insn_history_range = record_btrace_insn_history_range; | |
660 | ops->to_call_history = record_btrace_call_history; | |
661 | ops->to_call_history_from = record_btrace_call_history_from; | |
662 | ops->to_call_history_range = record_btrace_call_history_range; | |
663 | ops->to_stratum = record_stratum; | |
664 | ops->to_magic = OPS_MAGIC; | |
665 | } | |
666 | ||
667 | /* Alias for "target record". */ | |
668 | ||
669 | static void | |
670 | cmd_record_btrace_start (char *args, int from_tty) | |
671 | { | |
672 | if (args != NULL && *args != 0) | |
673 | error (_("Invalid argument.")); | |
674 | ||
675 | execute_command ("target record-btrace", from_tty); | |
676 | } | |
677 | ||
678 | void _initialize_record_btrace (void); | |
679 | ||
680 | /* Initialize btrace commands. */ | |
681 | ||
682 | void | |
683 | _initialize_record_btrace (void) | |
684 | { | |
685 | add_cmd ("btrace", class_obscure, cmd_record_btrace_start, | |
686 | _("Start branch trace recording."), | |
687 | &record_cmdlist); | |
688 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); | |
689 | ||
690 | init_record_btrace_ops (); | |
691 | add_target (&record_btrace_ops); | |
692 | } |