Commit | Line | Data |
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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
e2882c85 | 3 | Copyright (C) 2013-2018 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" | |
c0272db5 | 24 | #include "record-btrace.h" |
afedecd3 MM |
25 | #include "gdbthread.h" |
26 | #include "target.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "disasm.h" | |
76727919 | 29 | #include "observable.h" |
afedecd3 MM |
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" |
0b722aec | 37 | #include "hashtab.h" |
45741a9c | 38 | #include "infrun.h" |
70ad5bff MM |
39 | #include "event-loop.h" |
40 | #include "inf-loop.h" | |
e3cfc1c7 | 41 | #include "vec.h" |
325fac50 | 42 | #include <algorithm> |
afedecd3 MM |
43 | |
44 | /* The target_ops of record-btrace. */ | |
45 | static struct target_ops record_btrace_ops; | |
46 | ||
76727919 TT |
47 | /* Token associated with a new-thread observer enabling branch tracing |
48 | for the new thread. */ | |
49 | static const gdb::observers::token record_btrace_thread_observer_token; | |
afedecd3 | 50 | |
67b5c0c1 MM |
51 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
52 | static const char replay_memory_access_read_only[] = "read-only"; | |
53 | static const char replay_memory_access_read_write[] = "read-write"; | |
54 | static const char *const replay_memory_access_types[] = | |
55 | { | |
56 | replay_memory_access_read_only, | |
57 | replay_memory_access_read_write, | |
58 | NULL | |
59 | }; | |
60 | ||
61 | /* The currently allowed replay memory access type. */ | |
62 | static const char *replay_memory_access = replay_memory_access_read_only; | |
63 | ||
4a4495d6 MM |
64 | /* The cpu state kinds. */ |
65 | enum record_btrace_cpu_state_kind | |
66 | { | |
67 | CS_AUTO, | |
68 | CS_NONE, | |
69 | CS_CPU | |
70 | }; | |
71 | ||
72 | /* The current cpu state. */ | |
73 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
74 | ||
75 | /* The current cpu for trace decode. */ | |
76 | static struct btrace_cpu record_btrace_cpu; | |
77 | ||
67b5c0c1 MM |
78 | /* Command lists for "set/show record btrace". */ |
79 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
80 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 81 | |
70ad5bff MM |
82 | /* The execution direction of the last resume we got. See record-full.c. */ |
83 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
84 | ||
85 | /* The async event handler for reverse/replay execution. */ | |
86 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
87 | ||
aef92902 MM |
88 | /* A flag indicating that we are currently generating a core file. */ |
89 | static int record_btrace_generating_corefile; | |
90 | ||
f4abbc16 MM |
91 | /* The current branch trace configuration. */ |
92 | static struct btrace_config record_btrace_conf; | |
93 | ||
94 | /* Command list for "record btrace". */ | |
95 | static struct cmd_list_element *record_btrace_cmdlist; | |
96 | ||
d33501a5 MM |
97 | /* Command lists for "set/show record btrace bts". */ |
98 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
99 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
100 | ||
b20a6524 MM |
101 | /* Command lists for "set/show record btrace pt". */ |
102 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
103 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
104 | ||
4a4495d6 MM |
105 | /* Command list for "set record btrace cpu". */ |
106 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
107 | ||
afedecd3 MM |
108 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
109 | ambiguities when used in if statements. */ | |
110 | ||
111 | #define DEBUG(msg, args...) \ | |
112 | do \ | |
113 | { \ | |
114 | if (record_debug != 0) \ | |
115 | fprintf_unfiltered (gdb_stdlog, \ | |
116 | "[record-btrace] " msg "\n", ##args); \ | |
117 | } \ | |
118 | while (0) | |
119 | ||
120 | ||
4a4495d6 MM |
121 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
122 | configured as auto. */ | |
123 | const struct btrace_cpu * | |
124 | record_btrace_get_cpu (void) | |
125 | { | |
126 | switch (record_btrace_cpu_state) | |
127 | { | |
128 | case CS_AUTO: | |
129 | return nullptr; | |
130 | ||
131 | case CS_NONE: | |
132 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
133 | /* Fall through. */ | |
134 | case CS_CPU: | |
135 | return &record_btrace_cpu; | |
136 | } | |
137 | ||
138 | error (_("Internal error: bad record btrace cpu state.")); | |
139 | } | |
140 | ||
afedecd3 | 141 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 142 | thread_info. |
afedecd3 MM |
143 | |
144 | Throws an error if there is no thread or no trace. This function never | |
145 | returns NULL. */ | |
146 | ||
066ce621 MM |
147 | static struct thread_info * |
148 | require_btrace_thread (void) | |
afedecd3 MM |
149 | { |
150 | struct thread_info *tp; | |
afedecd3 MM |
151 | |
152 | DEBUG ("require"); | |
153 | ||
154 | tp = find_thread_ptid (inferior_ptid); | |
155 | if (tp == NULL) | |
156 | error (_("No thread.")); | |
157 | ||
cd4007e4 MM |
158 | validate_registers_access (); |
159 | ||
4a4495d6 | 160 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 161 | |
6e07b1d2 | 162 | if (btrace_is_empty (tp)) |
afedecd3 MM |
163 | error (_("No trace.")); |
164 | ||
066ce621 MM |
165 | return tp; |
166 | } | |
167 | ||
168 | /* Update the branch trace for the current thread and return a pointer to its | |
169 | branch trace information struct. | |
170 | ||
171 | Throws an error if there is no thread or no trace. This function never | |
172 | returns NULL. */ | |
173 | ||
174 | static struct btrace_thread_info * | |
175 | require_btrace (void) | |
176 | { | |
177 | struct thread_info *tp; | |
178 | ||
179 | tp = require_btrace_thread (); | |
180 | ||
181 | return &tp->btrace; | |
afedecd3 MM |
182 | } |
183 | ||
184 | /* Enable branch tracing for one thread. Warn on errors. */ | |
185 | ||
186 | static void | |
187 | record_btrace_enable_warn (struct thread_info *tp) | |
188 | { | |
492d29ea PA |
189 | TRY |
190 | { | |
191 | btrace_enable (tp, &record_btrace_conf); | |
192 | } | |
193 | CATCH (error, RETURN_MASK_ERROR) | |
194 | { | |
195 | warning ("%s", error.message); | |
196 | } | |
197 | END_CATCH | |
afedecd3 MM |
198 | } |
199 | ||
afedecd3 MM |
200 | /* Enable automatic tracing of new threads. */ |
201 | ||
202 | static void | |
203 | record_btrace_auto_enable (void) | |
204 | { | |
205 | DEBUG ("attach thread observer"); | |
206 | ||
76727919 TT |
207 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
208 | record_btrace_thread_observer_token); | |
afedecd3 MM |
209 | } |
210 | ||
211 | /* Disable automatic tracing of new threads. */ | |
212 | ||
213 | static void | |
214 | record_btrace_auto_disable (void) | |
215 | { | |
afedecd3 MM |
216 | DEBUG ("detach thread observer"); |
217 | ||
76727919 | 218 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
219 | } |
220 | ||
70ad5bff MM |
221 | /* The record-btrace async event handler function. */ |
222 | ||
223 | static void | |
224 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
225 | { | |
226 | inferior_event_handler (INF_REG_EVENT, NULL); | |
227 | } | |
228 | ||
c0272db5 TW |
229 | /* See record-btrace.h. */ |
230 | ||
231 | void | |
232 | record_btrace_push_target (void) | |
233 | { | |
234 | const char *format; | |
235 | ||
236 | record_btrace_auto_enable (); | |
237 | ||
238 | push_target (&record_btrace_ops); | |
239 | ||
240 | record_btrace_async_inferior_event_handler | |
241 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
242 | NULL); | |
243 | record_btrace_generating_corefile = 0; | |
244 | ||
245 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 246 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
247 | } |
248 | ||
228f1508 SM |
249 | /* Disable btrace on a set of threads on scope exit. */ |
250 | ||
251 | struct scoped_btrace_disable | |
252 | { | |
253 | scoped_btrace_disable () = default; | |
254 | ||
255 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
256 | ||
257 | ~scoped_btrace_disable () | |
258 | { | |
259 | for (thread_info *tp : m_threads) | |
260 | btrace_disable (tp); | |
261 | } | |
262 | ||
263 | void add_thread (thread_info *thread) | |
264 | { | |
265 | m_threads.push_front (thread); | |
266 | } | |
267 | ||
268 | void discard () | |
269 | { | |
270 | m_threads.clear (); | |
271 | } | |
272 | ||
273 | private: | |
274 | std::forward_list<thread_info *> m_threads; | |
275 | }; | |
276 | ||
afedecd3 MM |
277 | /* The to_open method of target record-btrace. */ |
278 | ||
279 | static void | |
014f9477 | 280 | record_btrace_open (const char *args, int from_tty) |
afedecd3 | 281 | { |
228f1508 SM |
282 | /* If we fail to enable btrace for one thread, disable it for the threads for |
283 | which it was successfully enabled. */ | |
284 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
285 | struct thread_info *tp; |
286 | ||
287 | DEBUG ("open"); | |
288 | ||
8213266a | 289 | record_preopen (); |
afedecd3 MM |
290 | |
291 | if (!target_has_execution) | |
292 | error (_("The program is not being run.")); | |
293 | ||
034f788c | 294 | ALL_NON_EXITED_THREADS (tp) |
5d5658a1 | 295 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 296 | { |
f4abbc16 | 297 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 298 | |
228f1508 | 299 | btrace_disable.add_thread (tp); |
afedecd3 MM |
300 | } |
301 | ||
c0272db5 | 302 | record_btrace_push_target (); |
afedecd3 | 303 | |
228f1508 | 304 | btrace_disable.discard (); |
afedecd3 MM |
305 | } |
306 | ||
307 | /* The to_stop_recording method of target record-btrace. */ | |
308 | ||
309 | static void | |
c6cd7c02 | 310 | record_btrace_stop_recording (struct target_ops *self) |
afedecd3 MM |
311 | { |
312 | struct thread_info *tp; | |
313 | ||
314 | DEBUG ("stop recording"); | |
315 | ||
316 | record_btrace_auto_disable (); | |
317 | ||
034f788c | 318 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
319 | if (tp->btrace.target != NULL) |
320 | btrace_disable (tp); | |
321 | } | |
322 | ||
c0272db5 TW |
323 | /* The to_disconnect method of target record-btrace. */ |
324 | ||
325 | static void | |
326 | record_btrace_disconnect (struct target_ops *self, const char *args, | |
327 | int from_tty) | |
328 | { | |
329 | struct target_ops *beneath = self->beneath; | |
330 | ||
331 | /* Do not stop recording, just clean up GDB side. */ | |
332 | unpush_target (self); | |
333 | ||
334 | /* Forward disconnect. */ | |
335 | beneath->to_disconnect (beneath, args, from_tty); | |
336 | } | |
337 | ||
afedecd3 MM |
338 | /* The to_close method of target record-btrace. */ |
339 | ||
340 | static void | |
de90e03d | 341 | record_btrace_close (struct target_ops *self) |
afedecd3 | 342 | { |
568e808b MM |
343 | struct thread_info *tp; |
344 | ||
70ad5bff MM |
345 | if (record_btrace_async_inferior_event_handler != NULL) |
346 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
347 | ||
99c819ee MM |
348 | /* Make sure automatic recording gets disabled even if we did not stop |
349 | recording before closing the record-btrace target. */ | |
350 | record_btrace_auto_disable (); | |
351 | ||
568e808b MM |
352 | /* We should have already stopped recording. |
353 | Tear down btrace in case we have not. */ | |
034f788c | 354 | ALL_NON_EXITED_THREADS (tp) |
568e808b | 355 | btrace_teardown (tp); |
afedecd3 MM |
356 | } |
357 | ||
b7d2e916 PA |
358 | /* The to_async method of target record-btrace. */ |
359 | ||
360 | static void | |
6a3753b3 | 361 | record_btrace_async (struct target_ops *ops, int enable) |
b7d2e916 | 362 | { |
6a3753b3 | 363 | if (enable) |
b7d2e916 PA |
364 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
365 | else | |
366 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
367 | ||
6a3753b3 | 368 | ops->beneath->to_async (ops->beneath, enable); |
b7d2e916 PA |
369 | } |
370 | ||
d33501a5 MM |
371 | /* Adjusts the size and returns a human readable size suffix. */ |
372 | ||
373 | static const char * | |
374 | record_btrace_adjust_size (unsigned int *size) | |
375 | { | |
376 | unsigned int sz; | |
377 | ||
378 | sz = *size; | |
379 | ||
380 | if ((sz & ((1u << 30) - 1)) == 0) | |
381 | { | |
382 | *size = sz >> 30; | |
383 | return "GB"; | |
384 | } | |
385 | else if ((sz & ((1u << 20) - 1)) == 0) | |
386 | { | |
387 | *size = sz >> 20; | |
388 | return "MB"; | |
389 | } | |
390 | else if ((sz & ((1u << 10) - 1)) == 0) | |
391 | { | |
392 | *size = sz >> 10; | |
393 | return "kB"; | |
394 | } | |
395 | else | |
396 | return ""; | |
397 | } | |
398 | ||
399 | /* Print a BTS configuration. */ | |
400 | ||
401 | static void | |
402 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
403 | { | |
404 | const char *suffix; | |
405 | unsigned int size; | |
406 | ||
407 | size = conf->size; | |
408 | if (size > 0) | |
409 | { | |
410 | suffix = record_btrace_adjust_size (&size); | |
411 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
412 | } | |
413 | } | |
414 | ||
bc504a31 | 415 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
416 | |
417 | static void | |
418 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
419 | { | |
420 | const char *suffix; | |
421 | unsigned int size; | |
422 | ||
423 | size = conf->size; | |
424 | if (size > 0) | |
425 | { | |
426 | suffix = record_btrace_adjust_size (&size); | |
427 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
428 | } | |
429 | } | |
430 | ||
d33501a5 MM |
431 | /* Print a branch tracing configuration. */ |
432 | ||
433 | static void | |
434 | record_btrace_print_conf (const struct btrace_config *conf) | |
435 | { | |
436 | printf_unfiltered (_("Recording format: %s.\n"), | |
437 | btrace_format_string (conf->format)); | |
438 | ||
439 | switch (conf->format) | |
440 | { | |
441 | case BTRACE_FORMAT_NONE: | |
442 | return; | |
443 | ||
444 | case BTRACE_FORMAT_BTS: | |
445 | record_btrace_print_bts_conf (&conf->bts); | |
446 | return; | |
b20a6524 MM |
447 | |
448 | case BTRACE_FORMAT_PT: | |
449 | record_btrace_print_pt_conf (&conf->pt); | |
450 | return; | |
d33501a5 MM |
451 | } |
452 | ||
453 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
454 | } | |
455 | ||
afedecd3 MM |
456 | /* The to_info_record method of target record-btrace. */ |
457 | ||
458 | static void | |
630d6a4a | 459 | record_btrace_info (struct target_ops *self) |
afedecd3 MM |
460 | { |
461 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 462 | const struct btrace_config *conf; |
afedecd3 | 463 | struct thread_info *tp; |
31fd9caa | 464 | unsigned int insns, calls, gaps; |
afedecd3 MM |
465 | |
466 | DEBUG ("info"); | |
467 | ||
468 | tp = find_thread_ptid (inferior_ptid); | |
469 | if (tp == NULL) | |
470 | error (_("No thread.")); | |
471 | ||
cd4007e4 MM |
472 | validate_registers_access (); |
473 | ||
f4abbc16 MM |
474 | btinfo = &tp->btrace; |
475 | ||
476 | conf = btrace_conf (btinfo); | |
477 | if (conf != NULL) | |
d33501a5 | 478 | record_btrace_print_conf (conf); |
f4abbc16 | 479 | |
4a4495d6 | 480 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 481 | |
23a7fe75 MM |
482 | insns = 0; |
483 | calls = 0; | |
31fd9caa | 484 | gaps = 0; |
23a7fe75 | 485 | |
6e07b1d2 | 486 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
487 | { |
488 | struct btrace_call_iterator call; | |
489 | struct btrace_insn_iterator insn; | |
490 | ||
491 | btrace_call_end (&call, btinfo); | |
492 | btrace_call_prev (&call, 1); | |
5de9129b | 493 | calls = btrace_call_number (&call); |
23a7fe75 MM |
494 | |
495 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 496 | insns = btrace_insn_number (&insn); |
31fd9caa | 497 | |
69090cee TW |
498 | /* If the last instruction is not a gap, it is the current instruction |
499 | that is not actually part of the record. */ | |
500 | if (btrace_insn_get (&insn) != NULL) | |
501 | insns -= 1; | |
31fd9caa MM |
502 | |
503 | gaps = btinfo->ngaps; | |
23a7fe75 | 504 | } |
afedecd3 | 505 | |
31fd9caa | 506 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 PA |
507 | "for thread %s (%s).\n"), insns, calls, gaps, |
508 | print_thread_id (tp), target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
509 | |
510 | if (btrace_is_replaying (tp)) | |
511 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
512 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
513 | } |
514 | ||
31fd9caa MM |
515 | /* Print a decode error. */ |
516 | ||
517 | static void | |
518 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
519 | enum btrace_format format) | |
520 | { | |
508352a9 | 521 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 522 | |
112e8700 | 523 | uiout->text (_("[")); |
508352a9 TW |
524 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
525 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 526 | { |
112e8700 SM |
527 | uiout->text (_("decode error (")); |
528 | uiout->field_int ("errcode", errcode); | |
529 | uiout->text (_("): ")); | |
31fd9caa | 530 | } |
112e8700 SM |
531 | uiout->text (errstr); |
532 | uiout->text (_("]\n")); | |
31fd9caa MM |
533 | } |
534 | ||
afedecd3 MM |
535 | /* Print an unsigned int. */ |
536 | ||
537 | static void | |
538 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
539 | { | |
112e8700 | 540 | uiout->field_fmt (fld, "%u", val); |
afedecd3 MM |
541 | } |
542 | ||
f94cc897 MM |
543 | /* A range of source lines. */ |
544 | ||
545 | struct btrace_line_range | |
546 | { | |
547 | /* The symtab this line is from. */ | |
548 | struct symtab *symtab; | |
549 | ||
550 | /* The first line (inclusive). */ | |
551 | int begin; | |
552 | ||
553 | /* The last line (exclusive). */ | |
554 | int end; | |
555 | }; | |
556 | ||
557 | /* Construct a line range. */ | |
558 | ||
559 | static struct btrace_line_range | |
560 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
561 | { | |
562 | struct btrace_line_range range; | |
563 | ||
564 | range.symtab = symtab; | |
565 | range.begin = begin; | |
566 | range.end = end; | |
567 | ||
568 | return range; | |
569 | } | |
570 | ||
571 | /* Add a line to a line range. */ | |
572 | ||
573 | static struct btrace_line_range | |
574 | btrace_line_range_add (struct btrace_line_range range, int line) | |
575 | { | |
576 | if (range.end <= range.begin) | |
577 | { | |
578 | /* This is the first entry. */ | |
579 | range.begin = line; | |
580 | range.end = line + 1; | |
581 | } | |
582 | else if (line < range.begin) | |
583 | range.begin = line; | |
584 | else if (range.end < line) | |
585 | range.end = line; | |
586 | ||
587 | return range; | |
588 | } | |
589 | ||
590 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
591 | ||
592 | static int | |
593 | btrace_line_range_is_empty (struct btrace_line_range range) | |
594 | { | |
595 | return range.end <= range.begin; | |
596 | } | |
597 | ||
598 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
599 | ||
600 | static int | |
601 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
602 | struct btrace_line_range rhs) | |
603 | { | |
604 | return ((lhs.symtab == rhs.symtab) | |
605 | && (lhs.begin <= rhs.begin) | |
606 | && (rhs.end <= lhs.end)); | |
607 | } | |
608 | ||
609 | /* Find the line range associated with PC. */ | |
610 | ||
611 | static struct btrace_line_range | |
612 | btrace_find_line_range (CORE_ADDR pc) | |
613 | { | |
614 | struct btrace_line_range range; | |
615 | struct linetable_entry *lines; | |
616 | struct linetable *ltable; | |
617 | struct symtab *symtab; | |
618 | int nlines, i; | |
619 | ||
620 | symtab = find_pc_line_symtab (pc); | |
621 | if (symtab == NULL) | |
622 | return btrace_mk_line_range (NULL, 0, 0); | |
623 | ||
624 | ltable = SYMTAB_LINETABLE (symtab); | |
625 | if (ltable == NULL) | |
626 | return btrace_mk_line_range (symtab, 0, 0); | |
627 | ||
628 | nlines = ltable->nitems; | |
629 | lines = ltable->item; | |
630 | if (nlines <= 0) | |
631 | return btrace_mk_line_range (symtab, 0, 0); | |
632 | ||
633 | range = btrace_mk_line_range (symtab, 0, 0); | |
634 | for (i = 0; i < nlines - 1; i++) | |
635 | { | |
636 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
637 | range = btrace_line_range_add (range, lines[i].line); | |
638 | } | |
639 | ||
640 | return range; | |
641 | } | |
642 | ||
643 | /* Print source lines in LINES to UIOUT. | |
644 | ||
645 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
646 | instructions corresponding to that source line. When printing a new source | |
647 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
648 | the new source line. If the source line range in LINES is not empty, this | |
649 | function will leave the cleanup chain for the last printed source line open | |
650 | so instructions can be added to it. */ | |
651 | ||
652 | static void | |
653 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
654 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
655 | gdb::optional<ui_out_emit_list> *asm_list, | |
656 | gdb_disassembly_flags flags) | |
f94cc897 | 657 | { |
8d297bbf | 658 | print_source_lines_flags psl_flags; |
f94cc897 | 659 | |
f94cc897 MM |
660 | if (flags & DISASSEMBLY_FILENAME) |
661 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
662 | ||
7ea78b59 | 663 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 664 | { |
7ea78b59 | 665 | asm_list->reset (); |
f94cc897 | 666 | |
7ea78b59 | 667 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
668 | |
669 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
670 | ||
7ea78b59 | 671 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
672 | } |
673 | } | |
674 | ||
afedecd3 MM |
675 | /* Disassemble a section of the recorded instruction trace. */ |
676 | ||
677 | static void | |
23a7fe75 | 678 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 679 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 680 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
681 | const struct btrace_insn_iterator *end, |
682 | gdb_disassembly_flags flags) | |
afedecd3 | 683 | { |
9a24775b PA |
684 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
685 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 686 | |
f94cc897 MM |
687 | flags |= DISASSEMBLY_SPECULATIVE; |
688 | ||
7ea78b59 SM |
689 | struct gdbarch *gdbarch = target_gdbarch (); |
690 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 691 | |
7ea78b59 | 692 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 693 | |
7ea78b59 SM |
694 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
695 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 696 | |
8b172ce7 PA |
697 | gdb_pretty_print_disassembler disasm (gdbarch); |
698 | ||
7ea78b59 SM |
699 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
700 | btrace_insn_next (&it, 1)) | |
afedecd3 | 701 | { |
23a7fe75 MM |
702 | const struct btrace_insn *insn; |
703 | ||
704 | insn = btrace_insn_get (&it); | |
705 | ||
31fd9caa MM |
706 | /* A NULL instruction indicates a gap in the trace. */ |
707 | if (insn == NULL) | |
708 | { | |
709 | const struct btrace_config *conf; | |
710 | ||
711 | conf = btrace_conf (btinfo); | |
afedecd3 | 712 | |
31fd9caa MM |
713 | /* We have trace so we must have a configuration. */ |
714 | gdb_assert (conf != NULL); | |
715 | ||
69090cee TW |
716 | uiout->field_fmt ("insn-number", "%u", |
717 | btrace_insn_number (&it)); | |
718 | uiout->text ("\t"); | |
719 | ||
720 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
721 | conf->format); |
722 | } | |
723 | else | |
724 | { | |
f94cc897 | 725 | struct disasm_insn dinsn; |
da8c46d2 | 726 | |
f94cc897 | 727 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 728 | { |
f94cc897 MM |
729 | struct btrace_line_range lines; |
730 | ||
731 | lines = btrace_find_line_range (insn->pc); | |
732 | if (!btrace_line_range_is_empty (lines) | |
733 | && !btrace_line_range_contains_range (last_lines, lines)) | |
734 | { | |
7ea78b59 SM |
735 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
736 | flags); | |
f94cc897 MM |
737 | last_lines = lines; |
738 | } | |
7ea78b59 | 739 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 740 | { |
7ea78b59 SM |
741 | gdb_assert (!asm_list.has_value ()); |
742 | ||
743 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
744 | ||
f94cc897 | 745 | /* No source information. */ |
7ea78b59 | 746 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
747 | } |
748 | ||
7ea78b59 SM |
749 | gdb_assert (src_and_asm_tuple.has_value ()); |
750 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 751 | } |
da8c46d2 | 752 | |
f94cc897 MM |
753 | memset (&dinsn, 0, sizeof (dinsn)); |
754 | dinsn.number = btrace_insn_number (&it); | |
755 | dinsn.addr = insn->pc; | |
31fd9caa | 756 | |
da8c46d2 | 757 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 758 | dinsn.is_speculative = 1; |
da8c46d2 | 759 | |
8b172ce7 | 760 | disasm.pretty_print_insn (uiout, &dinsn, flags); |
31fd9caa | 761 | } |
afedecd3 MM |
762 | } |
763 | } | |
764 | ||
765 | /* The to_insn_history method of target record-btrace. */ | |
766 | ||
767 | static void | |
9a24775b PA |
768 | record_btrace_insn_history (struct target_ops *self, int size, |
769 | gdb_disassembly_flags flags) | |
afedecd3 MM |
770 | { |
771 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
772 | struct btrace_insn_history *history; |
773 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 774 | struct ui_out *uiout; |
23a7fe75 | 775 | unsigned int context, covered; |
afedecd3 MM |
776 | |
777 | uiout = current_uiout; | |
2e783024 | 778 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 779 | context = abs (size); |
afedecd3 MM |
780 | if (context == 0) |
781 | error (_("Bad record instruction-history-size.")); | |
782 | ||
23a7fe75 MM |
783 | btinfo = require_btrace (); |
784 | history = btinfo->insn_history; | |
785 | if (history == NULL) | |
afedecd3 | 786 | { |
07bbe694 | 787 | struct btrace_insn_iterator *replay; |
afedecd3 | 788 | |
9a24775b | 789 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 790 | |
07bbe694 MM |
791 | /* If we're replaying, we start at the replay position. Otherwise, we |
792 | start at the tail of the trace. */ | |
793 | replay = btinfo->replay; | |
794 | if (replay != NULL) | |
795 | begin = *replay; | |
796 | else | |
797 | btrace_insn_end (&begin, btinfo); | |
798 | ||
799 | /* We start from here and expand in the requested direction. Then we | |
800 | expand in the other direction, as well, to fill up any remaining | |
801 | context. */ | |
802 | end = begin; | |
803 | if (size < 0) | |
804 | { | |
805 | /* We want the current position covered, as well. */ | |
806 | covered = btrace_insn_next (&end, 1); | |
807 | covered += btrace_insn_prev (&begin, context - covered); | |
808 | covered += btrace_insn_next (&end, context - covered); | |
809 | } | |
810 | else | |
811 | { | |
812 | covered = btrace_insn_next (&end, context); | |
813 | covered += btrace_insn_prev (&begin, context - covered); | |
814 | } | |
afedecd3 MM |
815 | } |
816 | else | |
817 | { | |
23a7fe75 MM |
818 | begin = history->begin; |
819 | end = history->end; | |
afedecd3 | 820 | |
9a24775b | 821 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 822 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 823 | |
23a7fe75 MM |
824 | if (size < 0) |
825 | { | |
826 | end = begin; | |
827 | covered = btrace_insn_prev (&begin, context); | |
828 | } | |
829 | else | |
830 | { | |
831 | begin = end; | |
832 | covered = btrace_insn_next (&end, context); | |
833 | } | |
afedecd3 MM |
834 | } |
835 | ||
23a7fe75 | 836 | if (covered > 0) |
31fd9caa | 837 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
838 | else |
839 | { | |
840 | if (size < 0) | |
841 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
842 | else | |
843 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
844 | } | |
afedecd3 | 845 | |
23a7fe75 | 846 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
847 | } |
848 | ||
849 | /* The to_insn_history_range method of target record-btrace. */ | |
850 | ||
851 | static void | |
4e99c6b7 | 852 | record_btrace_insn_history_range (struct target_ops *self, |
9a24775b PA |
853 | ULONGEST from, ULONGEST to, |
854 | gdb_disassembly_flags flags) | |
afedecd3 MM |
855 | { |
856 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 857 | struct btrace_insn_iterator begin, end; |
afedecd3 | 858 | struct ui_out *uiout; |
23a7fe75 MM |
859 | unsigned int low, high; |
860 | int found; | |
afedecd3 MM |
861 | |
862 | uiout = current_uiout; | |
2e783024 | 863 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
864 | low = from; |
865 | high = to; | |
afedecd3 | 866 | |
9a24775b | 867 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
868 | |
869 | /* Check for wrap-arounds. */ | |
23a7fe75 | 870 | if (low != from || high != to) |
afedecd3 MM |
871 | error (_("Bad range.")); |
872 | ||
0688d04e | 873 | if (high < low) |
afedecd3 MM |
874 | error (_("Bad range.")); |
875 | ||
23a7fe75 | 876 | btinfo = require_btrace (); |
afedecd3 | 877 | |
23a7fe75 MM |
878 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
879 | if (found == 0) | |
880 | error (_("Range out of bounds.")); | |
afedecd3 | 881 | |
23a7fe75 MM |
882 | found = btrace_find_insn_by_number (&end, btinfo, high); |
883 | if (found == 0) | |
0688d04e MM |
884 | { |
885 | /* Silently truncate the range. */ | |
886 | btrace_insn_end (&end, btinfo); | |
887 | } | |
888 | else | |
889 | { | |
890 | /* We want both begin and end to be inclusive. */ | |
891 | btrace_insn_next (&end, 1); | |
892 | } | |
afedecd3 | 893 | |
31fd9caa | 894 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 895 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
896 | } |
897 | ||
898 | /* The to_insn_history_from method of target record-btrace. */ | |
899 | ||
900 | static void | |
9abc3ff3 | 901 | record_btrace_insn_history_from (struct target_ops *self, |
9a24775b PA |
902 | ULONGEST from, int size, |
903 | gdb_disassembly_flags flags) | |
afedecd3 MM |
904 | { |
905 | ULONGEST begin, end, context; | |
906 | ||
907 | context = abs (size); | |
0688d04e MM |
908 | if (context == 0) |
909 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
910 | |
911 | if (size < 0) | |
912 | { | |
913 | end = from; | |
914 | ||
915 | if (from < context) | |
916 | begin = 0; | |
917 | else | |
0688d04e | 918 | begin = from - context + 1; |
afedecd3 MM |
919 | } |
920 | else | |
921 | { | |
922 | begin = from; | |
0688d04e | 923 | end = from + context - 1; |
afedecd3 MM |
924 | |
925 | /* Check for wrap-around. */ | |
926 | if (end < begin) | |
927 | end = ULONGEST_MAX; | |
928 | } | |
929 | ||
4e99c6b7 | 930 | record_btrace_insn_history_range (self, begin, end, flags); |
afedecd3 MM |
931 | } |
932 | ||
933 | /* Print the instruction number range for a function call history line. */ | |
934 | ||
935 | static void | |
23a7fe75 MM |
936 | btrace_call_history_insn_range (struct ui_out *uiout, |
937 | const struct btrace_function *bfun) | |
afedecd3 | 938 | { |
7acbe133 MM |
939 | unsigned int begin, end, size; |
940 | ||
0860c437 | 941 | size = bfun->insn.size (); |
7acbe133 | 942 | gdb_assert (size > 0); |
afedecd3 | 943 | |
23a7fe75 | 944 | begin = bfun->insn_offset; |
7acbe133 | 945 | end = begin + size - 1; |
afedecd3 | 946 | |
23a7fe75 | 947 | ui_out_field_uint (uiout, "insn begin", begin); |
112e8700 | 948 | uiout->text (","); |
23a7fe75 | 949 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
950 | } |
951 | ||
ce0dfbea MM |
952 | /* Compute the lowest and highest source line for the instructions in BFUN |
953 | and return them in PBEGIN and PEND. | |
954 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
955 | result from inlining or macro expansion. */ | |
956 | ||
957 | static void | |
958 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
959 | int *pbegin, int *pend) | |
960 | { | |
ce0dfbea MM |
961 | struct symtab *symtab; |
962 | struct symbol *sym; | |
ce0dfbea MM |
963 | int begin, end; |
964 | ||
965 | begin = INT_MAX; | |
966 | end = INT_MIN; | |
967 | ||
968 | sym = bfun->sym; | |
969 | if (sym == NULL) | |
970 | goto out; | |
971 | ||
972 | symtab = symbol_symtab (sym); | |
973 | ||
0860c437 | 974 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
975 | { |
976 | struct symtab_and_line sal; | |
977 | ||
0860c437 | 978 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
979 | if (sal.symtab != symtab || sal.line == 0) |
980 | continue; | |
981 | ||
325fac50 PA |
982 | begin = std::min (begin, sal.line); |
983 | end = std::max (end, sal.line); | |
ce0dfbea MM |
984 | } |
985 | ||
986 | out: | |
987 | *pbegin = begin; | |
988 | *pend = end; | |
989 | } | |
990 | ||
afedecd3 MM |
991 | /* Print the source line information for a function call history line. */ |
992 | ||
993 | static void | |
23a7fe75 MM |
994 | btrace_call_history_src_line (struct ui_out *uiout, |
995 | const struct btrace_function *bfun) | |
afedecd3 MM |
996 | { |
997 | struct symbol *sym; | |
23a7fe75 | 998 | int begin, end; |
afedecd3 MM |
999 | |
1000 | sym = bfun->sym; | |
1001 | if (sym == NULL) | |
1002 | return; | |
1003 | ||
112e8700 | 1004 | uiout->field_string ("file", |
08be3fe3 | 1005 | symtab_to_filename_for_display (symbol_symtab (sym))); |
afedecd3 | 1006 | |
ce0dfbea | 1007 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1008 | if (end < begin) |
afedecd3 MM |
1009 | return; |
1010 | ||
112e8700 SM |
1011 | uiout->text (":"); |
1012 | uiout->field_int ("min line", begin); | |
afedecd3 | 1013 | |
23a7fe75 | 1014 | if (end == begin) |
afedecd3 MM |
1015 | return; |
1016 | ||
112e8700 SM |
1017 | uiout->text (","); |
1018 | uiout->field_int ("max line", end); | |
afedecd3 MM |
1019 | } |
1020 | ||
0b722aec MM |
1021 | /* Get the name of a branch trace function. */ |
1022 | ||
1023 | static const char * | |
1024 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1025 | { | |
1026 | struct minimal_symbol *msym; | |
1027 | struct symbol *sym; | |
1028 | ||
1029 | if (bfun == NULL) | |
1030 | return "??"; | |
1031 | ||
1032 | msym = bfun->msym; | |
1033 | sym = bfun->sym; | |
1034 | ||
1035 | if (sym != NULL) | |
1036 | return SYMBOL_PRINT_NAME (sym); | |
1037 | else if (msym != NULL) | |
efd66ac6 | 1038 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1039 | else |
1040 | return "??"; | |
1041 | } | |
1042 | ||
afedecd3 MM |
1043 | /* Disassemble a section of the recorded function trace. */ |
1044 | ||
1045 | static void | |
23a7fe75 | 1046 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1047 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1048 | const struct btrace_call_iterator *begin, |
1049 | const struct btrace_call_iterator *end, | |
8d297bbf | 1050 | int int_flags) |
afedecd3 | 1051 | { |
23a7fe75 | 1052 | struct btrace_call_iterator it; |
8d297bbf | 1053 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1054 | |
8d297bbf | 1055 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1056 | btrace_call_number (end)); |
afedecd3 | 1057 | |
23a7fe75 | 1058 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1059 | { |
23a7fe75 MM |
1060 | const struct btrace_function *bfun; |
1061 | struct minimal_symbol *msym; | |
1062 | struct symbol *sym; | |
1063 | ||
1064 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1065 | sym = bfun->sym; |
0b722aec | 1066 | msym = bfun->msym; |
23a7fe75 | 1067 | |
afedecd3 | 1068 | /* Print the function index. */ |
23a7fe75 | 1069 | ui_out_field_uint (uiout, "index", bfun->number); |
112e8700 | 1070 | uiout->text ("\t"); |
afedecd3 | 1071 | |
31fd9caa MM |
1072 | /* Indicate gaps in the trace. */ |
1073 | if (bfun->errcode != 0) | |
1074 | { | |
1075 | const struct btrace_config *conf; | |
1076 | ||
1077 | conf = btrace_conf (btinfo); | |
1078 | ||
1079 | /* We have trace so we must have a configuration. */ | |
1080 | gdb_assert (conf != NULL); | |
1081 | ||
1082 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1083 | ||
1084 | continue; | |
1085 | } | |
1086 | ||
8710b709 MM |
1087 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1088 | { | |
1089 | int level = bfun->level + btinfo->level, i; | |
1090 | ||
1091 | for (i = 0; i < level; ++i) | |
112e8700 | 1092 | uiout->text (" "); |
8710b709 MM |
1093 | } |
1094 | ||
1095 | if (sym != NULL) | |
112e8700 | 1096 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym)); |
8710b709 | 1097 | else if (msym != NULL) |
112e8700 SM |
1098 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym)); |
1099 | else if (!uiout->is_mi_like_p ()) | |
1100 | uiout->field_string ("function", "??"); | |
8710b709 | 1101 | |
1e038f67 | 1102 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1103 | { |
112e8700 | 1104 | uiout->text (_("\tinst ")); |
23a7fe75 | 1105 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1106 | } |
1107 | ||
1e038f67 | 1108 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1109 | { |
112e8700 | 1110 | uiout->text (_("\tat ")); |
23a7fe75 | 1111 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1112 | } |
1113 | ||
112e8700 | 1114 | uiout->text ("\n"); |
afedecd3 MM |
1115 | } |
1116 | } | |
1117 | ||
1118 | /* The to_call_history method of target record-btrace. */ | |
1119 | ||
1120 | static void | |
0cb7c7b0 SM |
1121 | record_btrace_call_history (struct target_ops *self, int size, |
1122 | record_print_flags flags) | |
afedecd3 MM |
1123 | { |
1124 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1125 | struct btrace_call_history *history; |
1126 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1127 | struct ui_out *uiout; |
23a7fe75 | 1128 | unsigned int context, covered; |
afedecd3 MM |
1129 | |
1130 | uiout = current_uiout; | |
2e783024 | 1131 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1132 | context = abs (size); |
afedecd3 MM |
1133 | if (context == 0) |
1134 | error (_("Bad record function-call-history-size.")); | |
1135 | ||
23a7fe75 MM |
1136 | btinfo = require_btrace (); |
1137 | history = btinfo->call_history; | |
1138 | if (history == NULL) | |
afedecd3 | 1139 | { |
07bbe694 | 1140 | struct btrace_insn_iterator *replay; |
afedecd3 | 1141 | |
0cb7c7b0 | 1142 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1143 | |
07bbe694 MM |
1144 | /* If we're replaying, we start at the replay position. Otherwise, we |
1145 | start at the tail of the trace. */ | |
1146 | replay = btinfo->replay; | |
1147 | if (replay != NULL) | |
1148 | { | |
07bbe694 | 1149 | begin.btinfo = btinfo; |
a0f1b963 | 1150 | begin.index = replay->call_index; |
07bbe694 MM |
1151 | } |
1152 | else | |
1153 | btrace_call_end (&begin, btinfo); | |
1154 | ||
1155 | /* We start from here and expand in the requested direction. Then we | |
1156 | expand in the other direction, as well, to fill up any remaining | |
1157 | context. */ | |
1158 | end = begin; | |
1159 | if (size < 0) | |
1160 | { | |
1161 | /* We want the current position covered, as well. */ | |
1162 | covered = btrace_call_next (&end, 1); | |
1163 | covered += btrace_call_prev (&begin, context - covered); | |
1164 | covered += btrace_call_next (&end, context - covered); | |
1165 | } | |
1166 | else | |
1167 | { | |
1168 | covered = btrace_call_next (&end, context); | |
1169 | covered += btrace_call_prev (&begin, context- covered); | |
1170 | } | |
afedecd3 MM |
1171 | } |
1172 | else | |
1173 | { | |
23a7fe75 MM |
1174 | begin = history->begin; |
1175 | end = history->end; | |
afedecd3 | 1176 | |
0cb7c7b0 | 1177 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1178 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1179 | |
23a7fe75 MM |
1180 | if (size < 0) |
1181 | { | |
1182 | end = begin; | |
1183 | covered = btrace_call_prev (&begin, context); | |
1184 | } | |
1185 | else | |
1186 | { | |
1187 | begin = end; | |
1188 | covered = btrace_call_next (&end, context); | |
1189 | } | |
afedecd3 MM |
1190 | } |
1191 | ||
23a7fe75 | 1192 | if (covered > 0) |
8710b709 | 1193 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1194 | else |
1195 | { | |
1196 | if (size < 0) | |
1197 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1198 | else | |
1199 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1200 | } | |
afedecd3 | 1201 | |
23a7fe75 | 1202 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1203 | } |
1204 | ||
1205 | /* The to_call_history_range method of target record-btrace. */ | |
1206 | ||
1207 | static void | |
f0d960ea | 1208 | record_btrace_call_history_range (struct target_ops *self, |
8d297bbf | 1209 | ULONGEST from, ULONGEST to, |
0cb7c7b0 | 1210 | record_print_flags flags) |
afedecd3 MM |
1211 | { |
1212 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1213 | struct btrace_call_iterator begin, end; |
afedecd3 | 1214 | struct ui_out *uiout; |
23a7fe75 MM |
1215 | unsigned int low, high; |
1216 | int found; | |
afedecd3 MM |
1217 | |
1218 | uiout = current_uiout; | |
2e783024 | 1219 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1220 | low = from; |
1221 | high = to; | |
afedecd3 | 1222 | |
0cb7c7b0 | 1223 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1224 | |
1225 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1226 | if (low != from || high != to) |
afedecd3 MM |
1227 | error (_("Bad range.")); |
1228 | ||
0688d04e | 1229 | if (high < low) |
afedecd3 MM |
1230 | error (_("Bad range.")); |
1231 | ||
23a7fe75 | 1232 | btinfo = require_btrace (); |
afedecd3 | 1233 | |
23a7fe75 MM |
1234 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1235 | if (found == 0) | |
1236 | error (_("Range out of bounds.")); | |
afedecd3 | 1237 | |
23a7fe75 MM |
1238 | found = btrace_find_call_by_number (&end, btinfo, high); |
1239 | if (found == 0) | |
0688d04e MM |
1240 | { |
1241 | /* Silently truncate the range. */ | |
1242 | btrace_call_end (&end, btinfo); | |
1243 | } | |
1244 | else | |
1245 | { | |
1246 | /* We want both begin and end to be inclusive. */ | |
1247 | btrace_call_next (&end, 1); | |
1248 | } | |
afedecd3 | 1249 | |
8710b709 | 1250 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1251 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1252 | } |
1253 | ||
1254 | /* The to_call_history_from method of target record-btrace. */ | |
1255 | ||
1256 | static void | |
ec0aea04 | 1257 | record_btrace_call_history_from (struct target_ops *self, |
8d297bbf | 1258 | ULONGEST from, int size, |
0cb7c7b0 | 1259 | record_print_flags flags) |
afedecd3 MM |
1260 | { |
1261 | ULONGEST begin, end, context; | |
1262 | ||
1263 | context = abs (size); | |
0688d04e MM |
1264 | if (context == 0) |
1265 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1266 | |
1267 | if (size < 0) | |
1268 | { | |
1269 | end = from; | |
1270 | ||
1271 | if (from < context) | |
1272 | begin = 0; | |
1273 | else | |
0688d04e | 1274 | begin = from - context + 1; |
afedecd3 MM |
1275 | } |
1276 | else | |
1277 | { | |
1278 | begin = from; | |
0688d04e | 1279 | end = from + context - 1; |
afedecd3 MM |
1280 | |
1281 | /* Check for wrap-around. */ | |
1282 | if (end < begin) | |
1283 | end = ULONGEST_MAX; | |
1284 | } | |
1285 | ||
f0d960ea | 1286 | record_btrace_call_history_range (self, begin, end, flags); |
afedecd3 MM |
1287 | } |
1288 | ||
b158a20f TW |
1289 | /* The to_record_method method of target record-btrace. */ |
1290 | ||
1291 | static enum record_method | |
1292 | record_btrace_record_method (struct target_ops *self, ptid_t ptid) | |
1293 | { | |
b158a20f TW |
1294 | struct thread_info * const tp = find_thread_ptid (ptid); |
1295 | ||
1296 | if (tp == NULL) | |
1297 | error (_("No thread.")); | |
1298 | ||
1299 | if (tp->btrace.target == NULL) | |
1300 | return RECORD_METHOD_NONE; | |
1301 | ||
1302 | return RECORD_METHOD_BTRACE; | |
1303 | } | |
1304 | ||
07bbe694 MM |
1305 | /* The to_record_is_replaying method of target record-btrace. */ |
1306 | ||
1307 | static int | |
a52eab48 | 1308 | record_btrace_is_replaying (struct target_ops *self, ptid_t ptid) |
07bbe694 MM |
1309 | { |
1310 | struct thread_info *tp; | |
1311 | ||
034f788c | 1312 | ALL_NON_EXITED_THREADS (tp) |
a52eab48 | 1313 | if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) |
07bbe694 MM |
1314 | return 1; |
1315 | ||
1316 | return 0; | |
1317 | } | |
1318 | ||
7ff27e9b MM |
1319 | /* The to_record_will_replay method of target record-btrace. */ |
1320 | ||
1321 | static int | |
1322 | record_btrace_will_replay (struct target_ops *self, ptid_t ptid, int dir) | |
1323 | { | |
1324 | return dir == EXEC_REVERSE || record_btrace_is_replaying (self, ptid); | |
1325 | } | |
1326 | ||
633785ff MM |
1327 | /* The to_xfer_partial method of target record-btrace. */ |
1328 | ||
9b409511 | 1329 | static enum target_xfer_status |
633785ff MM |
1330 | record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, |
1331 | const char *annex, gdb_byte *readbuf, | |
1332 | const gdb_byte *writebuf, ULONGEST offset, | |
9b409511 | 1333 | ULONGEST len, ULONGEST *xfered_len) |
633785ff | 1334 | { |
633785ff | 1335 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1336 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1337 | && !record_btrace_generating_corefile |
4d10e986 | 1338 | && record_btrace_is_replaying (ops, inferior_ptid)) |
633785ff MM |
1339 | { |
1340 | switch (object) | |
1341 | { | |
1342 | case TARGET_OBJECT_MEMORY: | |
1343 | { | |
1344 | struct target_section *section; | |
1345 | ||
1346 | /* We do not allow writing memory in general. */ | |
1347 | if (writebuf != NULL) | |
9b409511 YQ |
1348 | { |
1349 | *xfered_len = len; | |
bc113b4e | 1350 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1351 | } |
633785ff MM |
1352 | |
1353 | /* We allow reading readonly memory. */ | |
1354 | section = target_section_by_addr (ops, offset); | |
1355 | if (section != NULL) | |
1356 | { | |
1357 | /* Check if the section we found is readonly. */ | |
1358 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1359 | section->the_bfd_section) | |
1360 | & SEC_READONLY) != 0) | |
1361 | { | |
1362 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1363 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1364 | break; |
1365 | } | |
1366 | } | |
1367 | ||
9b409511 | 1368 | *xfered_len = len; |
bc113b4e | 1369 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1370 | } |
1371 | } | |
1372 | } | |
1373 | ||
1374 | /* Forward the request. */ | |
e75fdfca TT |
1375 | ops = ops->beneath; |
1376 | return ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, | |
1377 | offset, len, xfered_len); | |
633785ff MM |
1378 | } |
1379 | ||
1380 | /* The to_insert_breakpoint method of target record-btrace. */ | |
1381 | ||
1382 | static int | |
1383 | record_btrace_insert_breakpoint (struct target_ops *ops, | |
1384 | struct gdbarch *gdbarch, | |
1385 | struct bp_target_info *bp_tgt) | |
1386 | { | |
67b5c0c1 MM |
1387 | const char *old; |
1388 | int ret; | |
633785ff MM |
1389 | |
1390 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1391 | duration of this function. */ | |
67b5c0c1 MM |
1392 | old = replay_memory_access; |
1393 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1394 | |
1395 | ret = 0; | |
492d29ea PA |
1396 | TRY |
1397 | { | |
1398 | ret = ops->beneath->to_insert_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
1399 | } | |
492d29ea PA |
1400 | CATCH (except, RETURN_MASK_ALL) |
1401 | { | |
6c63c96a | 1402 | replay_memory_access = old; |
492d29ea PA |
1403 | throw_exception (except); |
1404 | } | |
1405 | END_CATCH | |
6c63c96a | 1406 | replay_memory_access = old; |
633785ff MM |
1407 | |
1408 | return ret; | |
1409 | } | |
1410 | ||
1411 | /* The to_remove_breakpoint method of target record-btrace. */ | |
1412 | ||
1413 | static int | |
1414 | record_btrace_remove_breakpoint (struct target_ops *ops, | |
1415 | struct gdbarch *gdbarch, | |
73971819 PA |
1416 | struct bp_target_info *bp_tgt, |
1417 | enum remove_bp_reason reason) | |
633785ff | 1418 | { |
67b5c0c1 MM |
1419 | const char *old; |
1420 | int ret; | |
633785ff MM |
1421 | |
1422 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1423 | duration of this function. */ | |
67b5c0c1 MM |
1424 | old = replay_memory_access; |
1425 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1426 | |
1427 | ret = 0; | |
492d29ea PA |
1428 | TRY |
1429 | { | |
73971819 PA |
1430 | ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt, |
1431 | reason); | |
492d29ea | 1432 | } |
492d29ea PA |
1433 | CATCH (except, RETURN_MASK_ALL) |
1434 | { | |
6c63c96a | 1435 | replay_memory_access = old; |
492d29ea PA |
1436 | throw_exception (except); |
1437 | } | |
1438 | END_CATCH | |
6c63c96a | 1439 | replay_memory_access = old; |
633785ff MM |
1440 | |
1441 | return ret; | |
1442 | } | |
1443 | ||
1f3ef581 MM |
1444 | /* The to_fetch_registers method of target record-btrace. */ |
1445 | ||
1446 | static void | |
1447 | record_btrace_fetch_registers (struct target_ops *ops, | |
1448 | struct regcache *regcache, int regno) | |
1449 | { | |
1450 | struct btrace_insn_iterator *replay; | |
1451 | struct thread_info *tp; | |
1452 | ||
bcc0c096 | 1453 | tp = find_thread_ptid (regcache_get_ptid (regcache)); |
1f3ef581 MM |
1454 | gdb_assert (tp != NULL); |
1455 | ||
1456 | replay = tp->btrace.replay; | |
aef92902 | 1457 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1458 | { |
1459 | const struct btrace_insn *insn; | |
1460 | struct gdbarch *gdbarch; | |
1461 | int pcreg; | |
1462 | ||
ac7936df | 1463 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1464 | pcreg = gdbarch_pc_regnum (gdbarch); |
1465 | if (pcreg < 0) | |
1466 | return; | |
1467 | ||
1468 | /* We can only provide the PC register. */ | |
1469 | if (regno >= 0 && regno != pcreg) | |
1470 | return; | |
1471 | ||
1472 | insn = btrace_insn_get (replay); | |
1473 | gdb_assert (insn != NULL); | |
1474 | ||
1475 | regcache_raw_supply (regcache, regno, &insn->pc); | |
1476 | } | |
1477 | else | |
1478 | { | |
e75fdfca | 1479 | struct target_ops *t = ops->beneath; |
1f3ef581 | 1480 | |
e75fdfca | 1481 | t->to_fetch_registers (t, regcache, regno); |
1f3ef581 MM |
1482 | } |
1483 | } | |
1484 | ||
1485 | /* The to_store_registers method of target record-btrace. */ | |
1486 | ||
1487 | static void | |
1488 | record_btrace_store_registers (struct target_ops *ops, | |
1489 | struct regcache *regcache, int regno) | |
1490 | { | |
1491 | struct target_ops *t; | |
1492 | ||
a52eab48 | 1493 | if (!record_btrace_generating_corefile |
bcc0c096 | 1494 | && record_btrace_is_replaying (ops, regcache_get_ptid (regcache))) |
4d10e986 | 1495 | error (_("Cannot write registers while replaying.")); |
1f3ef581 MM |
1496 | |
1497 | gdb_assert (may_write_registers != 0); | |
1498 | ||
e75fdfca TT |
1499 | t = ops->beneath; |
1500 | t->to_store_registers (t, regcache, regno); | |
1f3ef581 MM |
1501 | } |
1502 | ||
1503 | /* The to_prepare_to_store method of target record-btrace. */ | |
1504 | ||
1505 | static void | |
1506 | record_btrace_prepare_to_store (struct target_ops *ops, | |
1507 | struct regcache *regcache) | |
1508 | { | |
1509 | struct target_ops *t; | |
1510 | ||
a52eab48 | 1511 | if (!record_btrace_generating_corefile |
bcc0c096 | 1512 | && record_btrace_is_replaying (ops, regcache_get_ptid (regcache))) |
1f3ef581 MM |
1513 | return; |
1514 | ||
e75fdfca TT |
1515 | t = ops->beneath; |
1516 | t->to_prepare_to_store (t, regcache); | |
1f3ef581 MM |
1517 | } |
1518 | ||
0b722aec MM |
1519 | /* The branch trace frame cache. */ |
1520 | ||
1521 | struct btrace_frame_cache | |
1522 | { | |
1523 | /* The thread. */ | |
1524 | struct thread_info *tp; | |
1525 | ||
1526 | /* The frame info. */ | |
1527 | struct frame_info *frame; | |
1528 | ||
1529 | /* The branch trace function segment. */ | |
1530 | const struct btrace_function *bfun; | |
1531 | }; | |
1532 | ||
1533 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1534 | ||
1535 | static htab_t bfcache; | |
1536 | ||
1537 | /* hash_f for htab_create_alloc of bfcache. */ | |
1538 | ||
1539 | static hashval_t | |
1540 | bfcache_hash (const void *arg) | |
1541 | { | |
19ba03f4 SM |
1542 | const struct btrace_frame_cache *cache |
1543 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1544 | |
1545 | return htab_hash_pointer (cache->frame); | |
1546 | } | |
1547 | ||
1548 | /* eq_f for htab_create_alloc of bfcache. */ | |
1549 | ||
1550 | static int | |
1551 | bfcache_eq (const void *arg1, const void *arg2) | |
1552 | { | |
19ba03f4 SM |
1553 | const struct btrace_frame_cache *cache1 |
1554 | = (const struct btrace_frame_cache *) arg1; | |
1555 | const struct btrace_frame_cache *cache2 | |
1556 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1557 | |
1558 | return cache1->frame == cache2->frame; | |
1559 | } | |
1560 | ||
1561 | /* Create a new btrace frame cache. */ | |
1562 | ||
1563 | static struct btrace_frame_cache * | |
1564 | bfcache_new (struct frame_info *frame) | |
1565 | { | |
1566 | struct btrace_frame_cache *cache; | |
1567 | void **slot; | |
1568 | ||
1569 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1570 | cache->frame = frame; | |
1571 | ||
1572 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1573 | gdb_assert (*slot == NULL); | |
1574 | *slot = cache; | |
1575 | ||
1576 | return cache; | |
1577 | } | |
1578 | ||
1579 | /* Extract the branch trace function from a branch trace frame. */ | |
1580 | ||
1581 | static const struct btrace_function * | |
1582 | btrace_get_frame_function (struct frame_info *frame) | |
1583 | { | |
1584 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1585 | struct btrace_frame_cache pattern; |
1586 | void **slot; | |
1587 | ||
1588 | pattern.frame = frame; | |
1589 | ||
1590 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1591 | if (slot == NULL) | |
1592 | return NULL; | |
1593 | ||
19ba03f4 | 1594 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1595 | return cache->bfun; |
1596 | } | |
1597 | ||
cecac1ab MM |
1598 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1599 | ||
1600 | static enum unwind_stop_reason | |
1601 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1602 | void **this_cache) | |
1603 | { | |
0b722aec MM |
1604 | const struct btrace_frame_cache *cache; |
1605 | const struct btrace_function *bfun; | |
1606 | ||
19ba03f4 | 1607 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1608 | bfun = cache->bfun; |
1609 | gdb_assert (bfun != NULL); | |
1610 | ||
42bfe59e | 1611 | if (bfun->up == 0) |
0b722aec MM |
1612 | return UNWIND_UNAVAILABLE; |
1613 | ||
1614 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1615 | } |
1616 | ||
1617 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1618 | ||
1619 | static void | |
1620 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1621 | struct frame_id *this_id) | |
1622 | { | |
0b722aec MM |
1623 | const struct btrace_frame_cache *cache; |
1624 | const struct btrace_function *bfun; | |
4aeb0dfc | 1625 | struct btrace_call_iterator it; |
0b722aec MM |
1626 | CORE_ADDR code, special; |
1627 | ||
19ba03f4 | 1628 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1629 | |
1630 | bfun = cache->bfun; | |
1631 | gdb_assert (bfun != NULL); | |
1632 | ||
4aeb0dfc TW |
1633 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1634 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1635 | |
1636 | code = get_frame_func (this_frame); | |
1637 | special = bfun->number; | |
1638 | ||
1639 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1640 | ||
1641 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1642 | btrace_get_bfun_name (cache->bfun), | |
1643 | core_addr_to_string_nz (this_id->code_addr), | |
1644 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1645 | } |
1646 | ||
1647 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1648 | ||
1649 | static struct value * | |
1650 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1651 | void **this_cache, | |
1652 | int regnum) | |
1653 | { | |
0b722aec MM |
1654 | const struct btrace_frame_cache *cache; |
1655 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1656 | struct btrace_call_iterator it; |
0b722aec MM |
1657 | struct gdbarch *gdbarch; |
1658 | CORE_ADDR pc; | |
1659 | int pcreg; | |
1660 | ||
1661 | gdbarch = get_frame_arch (this_frame); | |
1662 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1663 | if (pcreg < 0 || regnum != pcreg) | |
1664 | throw_error (NOT_AVAILABLE_ERROR, | |
1665 | _("Registers are not available in btrace record history")); | |
1666 | ||
19ba03f4 | 1667 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1668 | bfun = cache->bfun; |
1669 | gdb_assert (bfun != NULL); | |
1670 | ||
42bfe59e | 1671 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1672 | throw_error (NOT_AVAILABLE_ERROR, |
1673 | _("No caller in btrace record history")); | |
1674 | ||
42bfe59e TW |
1675 | caller = btrace_call_get (&it); |
1676 | ||
0b722aec | 1677 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1678 | pc = caller->insn.front ().pc; |
0b722aec MM |
1679 | else |
1680 | { | |
0860c437 | 1681 | pc = caller->insn.back ().pc; |
0b722aec MM |
1682 | pc += gdb_insn_length (gdbarch, pc); |
1683 | } | |
1684 | ||
1685 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1686 | btrace_get_bfun_name (bfun), bfun->level, | |
1687 | core_addr_to_string_nz (pc)); | |
1688 | ||
1689 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1690 | } |
1691 | ||
1692 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1693 | ||
1694 | static int | |
1695 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1696 | struct frame_info *this_frame, | |
1697 | void **this_cache) | |
1698 | { | |
0b722aec MM |
1699 | const struct btrace_function *bfun; |
1700 | struct btrace_frame_cache *cache; | |
cecac1ab | 1701 | struct thread_info *tp; |
0b722aec | 1702 | struct frame_info *next; |
cecac1ab MM |
1703 | |
1704 | /* THIS_FRAME does not contain a reference to its thread. */ | |
1705 | tp = find_thread_ptid (inferior_ptid); | |
1706 | gdb_assert (tp != NULL); | |
1707 | ||
0b722aec MM |
1708 | bfun = NULL; |
1709 | next = get_next_frame (this_frame); | |
1710 | if (next == NULL) | |
1711 | { | |
1712 | const struct btrace_insn_iterator *replay; | |
1713 | ||
1714 | replay = tp->btrace.replay; | |
1715 | if (replay != NULL) | |
08c3f6d2 | 1716 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1717 | } |
1718 | else | |
1719 | { | |
1720 | const struct btrace_function *callee; | |
42bfe59e | 1721 | struct btrace_call_iterator it; |
0b722aec MM |
1722 | |
1723 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1724 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1725 | return 0; | |
1726 | ||
1727 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1728 | return 0; | |
1729 | ||
1730 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1731 | } |
1732 | ||
1733 | if (bfun == NULL) | |
1734 | return 0; | |
1735 | ||
1736 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1737 | btrace_get_bfun_name (bfun), bfun->level); | |
1738 | ||
1739 | /* This is our frame. Initialize the frame cache. */ | |
1740 | cache = bfcache_new (this_frame); | |
1741 | cache->tp = tp; | |
1742 | cache->bfun = bfun; | |
1743 | ||
1744 | *this_cache = cache; | |
1745 | return 1; | |
1746 | } | |
1747 | ||
1748 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1749 | ||
1750 | static int | |
1751 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1752 | struct frame_info *this_frame, | |
1753 | void **this_cache) | |
1754 | { | |
1755 | const struct btrace_function *bfun, *callee; | |
1756 | struct btrace_frame_cache *cache; | |
42bfe59e | 1757 | struct btrace_call_iterator it; |
0b722aec | 1758 | struct frame_info *next; |
42bfe59e | 1759 | struct thread_info *tinfo; |
0b722aec MM |
1760 | |
1761 | next = get_next_frame (this_frame); | |
1762 | if (next == NULL) | |
1763 | return 0; | |
1764 | ||
1765 | callee = btrace_get_frame_function (next); | |
1766 | if (callee == NULL) | |
1767 | return 0; | |
1768 | ||
1769 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1770 | return 0; | |
1771 | ||
42bfe59e TW |
1772 | tinfo = find_thread_ptid (inferior_ptid); |
1773 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) | |
0b722aec MM |
1774 | return 0; |
1775 | ||
42bfe59e TW |
1776 | bfun = btrace_call_get (&it); |
1777 | ||
0b722aec MM |
1778 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1779 | btrace_get_bfun_name (bfun), bfun->level); | |
1780 | ||
1781 | /* This is our frame. Initialize the frame cache. */ | |
1782 | cache = bfcache_new (this_frame); | |
42bfe59e | 1783 | cache->tp = tinfo; |
0b722aec MM |
1784 | cache->bfun = bfun; |
1785 | ||
1786 | *this_cache = cache; | |
1787 | return 1; | |
1788 | } | |
1789 | ||
1790 | static void | |
1791 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1792 | { | |
1793 | struct btrace_frame_cache *cache; | |
1794 | void **slot; | |
1795 | ||
19ba03f4 | 1796 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1797 | |
1798 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1799 | gdb_assert (slot != NULL); | |
1800 | ||
1801 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1802 | } |
1803 | ||
1804 | /* btrace recording does not store previous memory content, neither the stack | |
1805 | frames content. Any unwinding would return errorneous results as the stack | |
1806 | contents no longer matches the changed PC value restored from history. | |
1807 | Therefore this unwinder reports any possibly unwound registers as | |
1808 | <unavailable>. */ | |
1809 | ||
0b722aec | 1810 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1811 | { |
1812 | NORMAL_FRAME, | |
1813 | record_btrace_frame_unwind_stop_reason, | |
1814 | record_btrace_frame_this_id, | |
1815 | record_btrace_frame_prev_register, | |
1816 | NULL, | |
0b722aec MM |
1817 | record_btrace_frame_sniffer, |
1818 | record_btrace_frame_dealloc_cache | |
1819 | }; | |
1820 | ||
1821 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1822 | { | |
1823 | TAILCALL_FRAME, | |
1824 | record_btrace_frame_unwind_stop_reason, | |
1825 | record_btrace_frame_this_id, | |
1826 | record_btrace_frame_prev_register, | |
1827 | NULL, | |
1828 | record_btrace_tailcall_frame_sniffer, | |
1829 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1830 | }; |
b2f4cfde | 1831 | |
ac01945b TT |
1832 | /* Implement the to_get_unwinder method. */ |
1833 | ||
1834 | static const struct frame_unwind * | |
1835 | record_btrace_to_get_unwinder (struct target_ops *self) | |
1836 | { | |
1837 | return &record_btrace_frame_unwind; | |
1838 | } | |
1839 | ||
1840 | /* Implement the to_get_tailcall_unwinder method. */ | |
1841 | ||
1842 | static const struct frame_unwind * | |
1843 | record_btrace_to_get_tailcall_unwinder (struct target_ops *self) | |
1844 | { | |
1845 | return &record_btrace_tailcall_frame_unwind; | |
1846 | } | |
1847 | ||
987e68b1 MM |
1848 | /* Return a human-readable string for FLAG. */ |
1849 | ||
1850 | static const char * | |
1851 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1852 | { | |
1853 | switch (flag) | |
1854 | { | |
1855 | case BTHR_STEP: | |
1856 | return "step"; | |
1857 | ||
1858 | case BTHR_RSTEP: | |
1859 | return "reverse-step"; | |
1860 | ||
1861 | case BTHR_CONT: | |
1862 | return "cont"; | |
1863 | ||
1864 | case BTHR_RCONT: | |
1865 | return "reverse-cont"; | |
1866 | ||
1867 | case BTHR_STOP: | |
1868 | return "stop"; | |
1869 | } | |
1870 | ||
1871 | return "<invalid>"; | |
1872 | } | |
1873 | ||
52834460 MM |
1874 | /* Indicate that TP should be resumed according to FLAG. */ |
1875 | ||
1876 | static void | |
1877 | record_btrace_resume_thread (struct thread_info *tp, | |
1878 | enum btrace_thread_flag flag) | |
1879 | { | |
1880 | struct btrace_thread_info *btinfo; | |
1881 | ||
43792cf0 | 1882 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 | 1883 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); |
52834460 MM |
1884 | |
1885 | btinfo = &tp->btrace; | |
1886 | ||
52834460 | 1887 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1888 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1889 | |
0ca912df MM |
1890 | /* A resume request overwrites a preceding resume or stop request. */ |
1891 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1892 | btinfo->flags |= flag; |
1893 | } | |
1894 | ||
ec71cc2f MM |
1895 | /* Get the current frame for TP. */ |
1896 | ||
1897 | static struct frame_info * | |
1898 | get_thread_current_frame (struct thread_info *tp) | |
1899 | { | |
1900 | struct frame_info *frame; | |
1901 | ptid_t old_inferior_ptid; | |
1902 | int executing; | |
1903 | ||
1904 | /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ | |
1905 | old_inferior_ptid = inferior_ptid; | |
1906 | inferior_ptid = tp->ptid; | |
1907 | ||
1908 | /* Clear the executing flag to allow changes to the current frame. | |
1909 | We are not actually running, yet. We just started a reverse execution | |
1910 | command or a record goto command. | |
1911 | For the latter, EXECUTING is false and this has no effect. | |
1912 | For the former, EXECUTING is true and we're in to_wait, about to | |
1913 | move the thread. Since we need to recompute the stack, we temporarily | |
1914 | set EXECUTING to flase. */ | |
1915 | executing = is_executing (inferior_ptid); | |
1916 | set_executing (inferior_ptid, 0); | |
1917 | ||
1918 | frame = NULL; | |
1919 | TRY | |
1920 | { | |
1921 | frame = get_current_frame (); | |
1922 | } | |
1923 | CATCH (except, RETURN_MASK_ALL) | |
1924 | { | |
1925 | /* Restore the previous execution state. */ | |
1926 | set_executing (inferior_ptid, executing); | |
1927 | ||
1928 | /* Restore the previous inferior_ptid. */ | |
1929 | inferior_ptid = old_inferior_ptid; | |
1930 | ||
1931 | throw_exception (except); | |
1932 | } | |
1933 | END_CATCH | |
1934 | ||
1935 | /* Restore the previous execution state. */ | |
1936 | set_executing (inferior_ptid, executing); | |
1937 | ||
1938 | /* Restore the previous inferior_ptid. */ | |
1939 | inferior_ptid = old_inferior_ptid; | |
1940 | ||
1941 | return frame; | |
1942 | } | |
1943 | ||
52834460 MM |
1944 | /* Start replaying a thread. */ |
1945 | ||
1946 | static struct btrace_insn_iterator * | |
1947 | record_btrace_start_replaying (struct thread_info *tp) | |
1948 | { | |
52834460 MM |
1949 | struct btrace_insn_iterator *replay; |
1950 | struct btrace_thread_info *btinfo; | |
52834460 MM |
1951 | |
1952 | btinfo = &tp->btrace; | |
1953 | replay = NULL; | |
1954 | ||
1955 | /* We can't start replaying without trace. */ | |
b54b03bd | 1956 | if (btinfo->functions.empty ()) |
52834460 MM |
1957 | return NULL; |
1958 | ||
52834460 MM |
1959 | /* GDB stores the current frame_id when stepping in order to detects steps |
1960 | into subroutines. | |
1961 | Since frames are computed differently when we're replaying, we need to | |
1962 | recompute those stored frames and fix them up so we can still detect | |
1963 | subroutines after we started replaying. */ | |
492d29ea | 1964 | TRY |
52834460 MM |
1965 | { |
1966 | struct frame_info *frame; | |
1967 | struct frame_id frame_id; | |
1968 | int upd_step_frame_id, upd_step_stack_frame_id; | |
1969 | ||
1970 | /* The current frame without replaying - computed via normal unwind. */ | |
ec71cc2f | 1971 | frame = get_thread_current_frame (tp); |
52834460 MM |
1972 | frame_id = get_frame_id (frame); |
1973 | ||
1974 | /* Check if we need to update any stepping-related frame id's. */ | |
1975 | upd_step_frame_id = frame_id_eq (frame_id, | |
1976 | tp->control.step_frame_id); | |
1977 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
1978 | tp->control.step_stack_frame_id); | |
1979 | ||
1980 | /* We start replaying at the end of the branch trace. This corresponds | |
1981 | to the current instruction. */ | |
8d749320 | 1982 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
1983 | btrace_insn_end (replay, btinfo); |
1984 | ||
31fd9caa MM |
1985 | /* Skip gaps at the end of the trace. */ |
1986 | while (btrace_insn_get (replay) == NULL) | |
1987 | { | |
1988 | unsigned int steps; | |
1989 | ||
1990 | steps = btrace_insn_prev (replay, 1); | |
1991 | if (steps == 0) | |
1992 | error (_("No trace.")); | |
1993 | } | |
1994 | ||
52834460 MM |
1995 | /* We're not replaying, yet. */ |
1996 | gdb_assert (btinfo->replay == NULL); | |
1997 | btinfo->replay = replay; | |
1998 | ||
1999 | /* Make sure we're not using any stale registers. */ | |
2000 | registers_changed_ptid (tp->ptid); | |
2001 | ||
2002 | /* The current frame with replaying - computed via btrace unwind. */ | |
ec71cc2f | 2003 | frame = get_thread_current_frame (tp); |
52834460 MM |
2004 | frame_id = get_frame_id (frame); |
2005 | ||
2006 | /* Replace stepping related frames where necessary. */ | |
2007 | if (upd_step_frame_id) | |
2008 | tp->control.step_frame_id = frame_id; | |
2009 | if (upd_step_stack_frame_id) | |
2010 | tp->control.step_stack_frame_id = frame_id; | |
2011 | } | |
492d29ea | 2012 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
2013 | { |
2014 | xfree (btinfo->replay); | |
2015 | btinfo->replay = NULL; | |
2016 | ||
2017 | registers_changed_ptid (tp->ptid); | |
2018 | ||
2019 | throw_exception (except); | |
2020 | } | |
492d29ea | 2021 | END_CATCH |
52834460 MM |
2022 | |
2023 | return replay; | |
2024 | } | |
2025 | ||
2026 | /* Stop replaying a thread. */ | |
2027 | ||
2028 | static void | |
2029 | record_btrace_stop_replaying (struct thread_info *tp) | |
2030 | { | |
2031 | struct btrace_thread_info *btinfo; | |
2032 | ||
2033 | btinfo = &tp->btrace; | |
2034 | ||
2035 | xfree (btinfo->replay); | |
2036 | btinfo->replay = NULL; | |
2037 | ||
2038 | /* Make sure we're not leaving any stale registers. */ | |
2039 | registers_changed_ptid (tp->ptid); | |
2040 | } | |
2041 | ||
e3cfc1c7 MM |
2042 | /* Stop replaying TP if it is at the end of its execution history. */ |
2043 | ||
2044 | static void | |
2045 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2046 | { | |
2047 | struct btrace_insn_iterator *replay, end; | |
2048 | struct btrace_thread_info *btinfo; | |
2049 | ||
2050 | btinfo = &tp->btrace; | |
2051 | replay = btinfo->replay; | |
2052 | ||
2053 | if (replay == NULL) | |
2054 | return; | |
2055 | ||
2056 | btrace_insn_end (&end, btinfo); | |
2057 | ||
2058 | if (btrace_insn_cmp (replay, &end) == 0) | |
2059 | record_btrace_stop_replaying (tp); | |
2060 | } | |
2061 | ||
b2f4cfde MM |
2062 | /* The to_resume method of target record-btrace. */ |
2063 | ||
2064 | static void | |
2065 | record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, | |
2066 | enum gdb_signal signal) | |
2067 | { | |
0ca912df | 2068 | struct thread_info *tp; |
d2939ba2 | 2069 | enum btrace_thread_flag flag, cflag; |
52834460 | 2070 | |
987e68b1 MM |
2071 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
2072 | execution_direction == EXEC_REVERSE ? "reverse-" : "", | |
2073 | step ? "step" : "cont"); | |
52834460 | 2074 | |
0ca912df MM |
2075 | /* Store the execution direction of the last resume. |
2076 | ||
2077 | If there is more than one to_resume call, we have to rely on infrun | |
2078 | to not change the execution direction in-between. */ | |
70ad5bff MM |
2079 | record_btrace_resume_exec_dir = execution_direction; |
2080 | ||
0ca912df | 2081 | /* As long as we're not replaying, just forward the request. |
52834460 | 2082 | |
0ca912df MM |
2083 | For non-stop targets this means that no thread is replaying. In order to |
2084 | make progress, we may need to explicitly move replaying threads to the end | |
2085 | of their execution history. */ | |
a52eab48 MM |
2086 | if ((execution_direction != EXEC_REVERSE) |
2087 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2088 | { |
e75fdfca | 2089 | ops = ops->beneath; |
04c4fe8c MM |
2090 | ops->to_resume (ops, ptid, step, signal); |
2091 | return; | |
b2f4cfde MM |
2092 | } |
2093 | ||
52834460 | 2094 | /* Compute the btrace thread flag for the requested move. */ |
d2939ba2 MM |
2095 | if (execution_direction == EXEC_REVERSE) |
2096 | { | |
2097 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2098 | cflag = BTHR_RCONT; | |
2099 | } | |
52834460 | 2100 | else |
d2939ba2 MM |
2101 | { |
2102 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2103 | cflag = BTHR_CONT; | |
2104 | } | |
52834460 | 2105 | |
52834460 | 2106 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2107 | record_btrace_wait below. |
2108 | ||
2109 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2110 | if (!target_is_non_stop_p ()) | |
2111 | { | |
2112 | gdb_assert (ptid_match (inferior_ptid, ptid)); | |
2113 | ||
2114 | ALL_NON_EXITED_THREADS (tp) | |
2115 | if (ptid_match (tp->ptid, ptid)) | |
2116 | { | |
2117 | if (ptid_match (tp->ptid, inferior_ptid)) | |
2118 | record_btrace_resume_thread (tp, flag); | |
2119 | else | |
2120 | record_btrace_resume_thread (tp, cflag); | |
2121 | } | |
2122 | } | |
2123 | else | |
2124 | { | |
2125 | ALL_NON_EXITED_THREADS (tp) | |
2126 | if (ptid_match (tp->ptid, ptid)) | |
2127 | record_btrace_resume_thread (tp, flag); | |
2128 | } | |
70ad5bff MM |
2129 | |
2130 | /* Async support. */ | |
2131 | if (target_can_async_p ()) | |
2132 | { | |
6a3753b3 | 2133 | target_async (1); |
70ad5bff MM |
2134 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2135 | } | |
52834460 MM |
2136 | } |
2137 | ||
85ad3aaf PA |
2138 | /* The to_commit_resume method of target record-btrace. */ |
2139 | ||
2140 | static void | |
2141 | record_btrace_commit_resume (struct target_ops *ops) | |
2142 | { | |
2143 | if ((execution_direction != EXEC_REVERSE) | |
2144 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
2145 | ops->beneath->to_commit_resume (ops->beneath); | |
2146 | } | |
2147 | ||
987e68b1 MM |
2148 | /* Cancel resuming TP. */ |
2149 | ||
2150 | static void | |
2151 | record_btrace_cancel_resume (struct thread_info *tp) | |
2152 | { | |
2153 | enum btrace_thread_flag flags; | |
2154 | ||
2155 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2156 | if (flags == 0) | |
2157 | return; | |
2158 | ||
43792cf0 PA |
2159 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2160 | print_thread_id (tp), | |
987e68b1 MM |
2161 | target_pid_to_str (tp->ptid), flags, |
2162 | btrace_thread_flag_to_str (flags)); | |
2163 | ||
2164 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2165 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2166 | } |
2167 | ||
2168 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2169 | ||
2170 | static struct target_waitstatus | |
2171 | btrace_step_no_history (void) | |
2172 | { | |
2173 | struct target_waitstatus status; | |
2174 | ||
2175 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2176 | ||
2177 | return status; | |
2178 | } | |
2179 | ||
2180 | /* Return a target_waitstatus indicating that a step finished. */ | |
2181 | ||
2182 | static struct target_waitstatus | |
2183 | btrace_step_stopped (void) | |
2184 | { | |
2185 | struct target_waitstatus status; | |
2186 | ||
2187 | status.kind = TARGET_WAITKIND_STOPPED; | |
2188 | status.value.sig = GDB_SIGNAL_TRAP; | |
2189 | ||
2190 | return status; | |
2191 | } | |
2192 | ||
6e4879f0 MM |
2193 | /* Return a target_waitstatus indicating that a thread was stopped as |
2194 | requested. */ | |
2195 | ||
2196 | static struct target_waitstatus | |
2197 | btrace_step_stopped_on_request (void) | |
2198 | { | |
2199 | struct target_waitstatus status; | |
2200 | ||
2201 | status.kind = TARGET_WAITKIND_STOPPED; | |
2202 | status.value.sig = GDB_SIGNAL_0; | |
2203 | ||
2204 | return status; | |
2205 | } | |
2206 | ||
d825d248 MM |
2207 | /* Return a target_waitstatus indicating a spurious stop. */ |
2208 | ||
2209 | static struct target_waitstatus | |
2210 | btrace_step_spurious (void) | |
2211 | { | |
2212 | struct target_waitstatus status; | |
2213 | ||
2214 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2215 | ||
2216 | return status; | |
2217 | } | |
2218 | ||
e3cfc1c7 MM |
2219 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2220 | ||
2221 | static struct target_waitstatus | |
2222 | btrace_step_no_resumed (void) | |
2223 | { | |
2224 | struct target_waitstatus status; | |
2225 | ||
2226 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2227 | ||
2228 | return status; | |
2229 | } | |
2230 | ||
2231 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2232 | ||
2233 | static struct target_waitstatus | |
2234 | btrace_step_again (void) | |
2235 | { | |
2236 | struct target_waitstatus status; | |
2237 | ||
2238 | status.kind = TARGET_WAITKIND_IGNORE; | |
2239 | ||
2240 | return status; | |
2241 | } | |
2242 | ||
52834460 MM |
2243 | /* Clear the record histories. */ |
2244 | ||
2245 | static void | |
2246 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2247 | { | |
2248 | xfree (btinfo->insn_history); | |
2249 | xfree (btinfo->call_history); | |
2250 | ||
2251 | btinfo->insn_history = NULL; | |
2252 | btinfo->call_history = NULL; | |
2253 | } | |
2254 | ||
3c615f99 MM |
2255 | /* Check whether TP's current replay position is at a breakpoint. */ |
2256 | ||
2257 | static int | |
2258 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2259 | { | |
2260 | struct btrace_insn_iterator *replay; | |
2261 | struct btrace_thread_info *btinfo; | |
2262 | const struct btrace_insn *insn; | |
2263 | struct inferior *inf; | |
2264 | ||
2265 | btinfo = &tp->btrace; | |
2266 | replay = btinfo->replay; | |
2267 | ||
2268 | if (replay == NULL) | |
2269 | return 0; | |
2270 | ||
2271 | insn = btrace_insn_get (replay); | |
2272 | if (insn == NULL) | |
2273 | return 0; | |
2274 | ||
2275 | inf = find_inferior_ptid (tp->ptid); | |
2276 | if (inf == NULL) | |
2277 | return 0; | |
2278 | ||
2279 | return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, | |
2280 | &btinfo->stop_reason); | |
2281 | } | |
2282 | ||
d825d248 | 2283 | /* Step one instruction in forward direction. */ |
52834460 MM |
2284 | |
2285 | static struct target_waitstatus | |
d825d248 | 2286 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2287 | { |
b61ce85c | 2288 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2289 | struct btrace_thread_info *btinfo; |
52834460 | 2290 | |
d825d248 MM |
2291 | btinfo = &tp->btrace; |
2292 | replay = btinfo->replay; | |
2293 | ||
2294 | /* We're done if we're not replaying. */ | |
2295 | if (replay == NULL) | |
2296 | return btrace_step_no_history (); | |
2297 | ||
011c71b6 MM |
2298 | /* Check if we're stepping a breakpoint. */ |
2299 | if (record_btrace_replay_at_breakpoint (tp)) | |
2300 | return btrace_step_stopped (); | |
2301 | ||
b61ce85c MM |
2302 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2303 | jump back to the instruction at which we started. */ | |
2304 | start = *replay; | |
d825d248 MM |
2305 | do |
2306 | { | |
2307 | unsigned int steps; | |
2308 | ||
e3cfc1c7 MM |
2309 | /* We will bail out here if we continue stepping after reaching the end |
2310 | of the execution history. */ | |
d825d248 MM |
2311 | steps = btrace_insn_next (replay, 1); |
2312 | if (steps == 0) | |
b61ce85c MM |
2313 | { |
2314 | *replay = start; | |
2315 | return btrace_step_no_history (); | |
2316 | } | |
d825d248 MM |
2317 | } |
2318 | while (btrace_insn_get (replay) == NULL); | |
2319 | ||
2320 | /* Determine the end of the instruction trace. */ | |
2321 | btrace_insn_end (&end, btinfo); | |
2322 | ||
e3cfc1c7 MM |
2323 | /* The execution trace contains (and ends with) the current instruction. |
2324 | This instruction has not been executed, yet, so the trace really ends | |
2325 | one instruction earlier. */ | |
d825d248 | 2326 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2327 | return btrace_step_no_history (); |
d825d248 MM |
2328 | |
2329 | return btrace_step_spurious (); | |
2330 | } | |
2331 | ||
2332 | /* Step one instruction in backward direction. */ | |
2333 | ||
2334 | static struct target_waitstatus | |
2335 | record_btrace_single_step_backward (struct thread_info *tp) | |
2336 | { | |
b61ce85c | 2337 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2338 | struct btrace_thread_info *btinfo; |
e59fa00f | 2339 | |
52834460 MM |
2340 | btinfo = &tp->btrace; |
2341 | replay = btinfo->replay; | |
2342 | ||
d825d248 MM |
2343 | /* Start replaying if we're not already doing so. */ |
2344 | if (replay == NULL) | |
2345 | replay = record_btrace_start_replaying (tp); | |
2346 | ||
2347 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2348 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2349 | the trace), jump back to the instruction at which we started. */ | |
2350 | start = *replay; | |
d825d248 MM |
2351 | do |
2352 | { | |
2353 | unsigned int steps; | |
2354 | ||
2355 | steps = btrace_insn_prev (replay, 1); | |
2356 | if (steps == 0) | |
b61ce85c MM |
2357 | { |
2358 | *replay = start; | |
2359 | return btrace_step_no_history (); | |
2360 | } | |
d825d248 MM |
2361 | } |
2362 | while (btrace_insn_get (replay) == NULL); | |
2363 | ||
011c71b6 MM |
2364 | /* Check if we're stepping a breakpoint. |
2365 | ||
2366 | For reverse-stepping, this check is after the step. There is logic in | |
2367 | infrun.c that handles reverse-stepping separately. See, for example, | |
2368 | proceed and adjust_pc_after_break. | |
2369 | ||
2370 | This code assumes that for reverse-stepping, PC points to the last | |
2371 | de-executed instruction, whereas for forward-stepping PC points to the | |
2372 | next to-be-executed instruction. */ | |
2373 | if (record_btrace_replay_at_breakpoint (tp)) | |
2374 | return btrace_step_stopped (); | |
2375 | ||
d825d248 MM |
2376 | return btrace_step_spurious (); |
2377 | } | |
2378 | ||
2379 | /* Step a single thread. */ | |
2380 | ||
2381 | static struct target_waitstatus | |
2382 | record_btrace_step_thread (struct thread_info *tp) | |
2383 | { | |
2384 | struct btrace_thread_info *btinfo; | |
2385 | struct target_waitstatus status; | |
2386 | enum btrace_thread_flag flags; | |
2387 | ||
2388 | btinfo = &tp->btrace; | |
2389 | ||
6e4879f0 MM |
2390 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2391 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2392 | |
43792cf0 | 2393 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 MM |
2394 | target_pid_to_str (tp->ptid), flags, |
2395 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2396 | |
6e4879f0 MM |
2397 | /* We can't step without an execution history. */ |
2398 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2399 | return btrace_step_no_history (); | |
2400 | ||
52834460 MM |
2401 | switch (flags) |
2402 | { | |
2403 | default: | |
2404 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2405 | ||
6e4879f0 MM |
2406 | case BTHR_STOP: |
2407 | return btrace_step_stopped_on_request (); | |
2408 | ||
52834460 | 2409 | case BTHR_STEP: |
d825d248 MM |
2410 | status = record_btrace_single_step_forward (tp); |
2411 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2412 | break; |
52834460 MM |
2413 | |
2414 | return btrace_step_stopped (); | |
2415 | ||
2416 | case BTHR_RSTEP: | |
d825d248 MM |
2417 | status = record_btrace_single_step_backward (tp); |
2418 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2419 | break; |
52834460 MM |
2420 | |
2421 | return btrace_step_stopped (); | |
2422 | ||
2423 | case BTHR_CONT: | |
e3cfc1c7 MM |
2424 | status = record_btrace_single_step_forward (tp); |
2425 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2426 | break; | |
52834460 | 2427 | |
e3cfc1c7 MM |
2428 | btinfo->flags |= flags; |
2429 | return btrace_step_again (); | |
52834460 MM |
2430 | |
2431 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2432 | status = record_btrace_single_step_backward (tp); |
2433 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2434 | break; | |
52834460 | 2435 | |
e3cfc1c7 MM |
2436 | btinfo->flags |= flags; |
2437 | return btrace_step_again (); | |
2438 | } | |
d825d248 | 2439 | |
e3cfc1c7 MM |
2440 | /* We keep threads moving at the end of their execution history. The to_wait |
2441 | method will stop the thread for whom the event is reported. */ | |
2442 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2443 | btinfo->flags |= flags; | |
52834460 | 2444 | |
e3cfc1c7 | 2445 | return status; |
b2f4cfde MM |
2446 | } |
2447 | ||
e3cfc1c7 MM |
2448 | /* A vector of threads. */ |
2449 | ||
2450 | typedef struct thread_info * tp_t; | |
2451 | DEF_VEC_P (tp_t); | |
2452 | ||
a6b5be76 MM |
2453 | /* Announce further events if necessary. */ |
2454 | ||
2455 | static void | |
53127008 SM |
2456 | record_btrace_maybe_mark_async_event |
2457 | (const std::vector<thread_info *> &moving, | |
2458 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2459 | { |
53127008 SM |
2460 | bool more_moving = !moving.empty (); |
2461 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2462 | |
2463 | if (!more_moving && !more_no_history) | |
2464 | return; | |
2465 | ||
2466 | if (more_moving) | |
2467 | DEBUG ("movers pending"); | |
2468 | ||
2469 | if (more_no_history) | |
2470 | DEBUG ("no-history pending"); | |
2471 | ||
2472 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2473 | } | |
2474 | ||
b2f4cfde MM |
2475 | /* The to_wait method of target record-btrace. */ |
2476 | ||
2477 | static ptid_t | |
2478 | record_btrace_wait (struct target_ops *ops, ptid_t ptid, | |
2479 | struct target_waitstatus *status, int options) | |
2480 | { | |
53127008 SM |
2481 | std::vector<thread_info *> moving; |
2482 | std::vector<thread_info *> no_history; | |
52834460 MM |
2483 | |
2484 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2485 | ||
b2f4cfde | 2486 | /* As long as we're not replaying, just forward the request. */ |
a52eab48 MM |
2487 | if ((execution_direction != EXEC_REVERSE) |
2488 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2489 | { |
e75fdfca TT |
2490 | ops = ops->beneath; |
2491 | return ops->to_wait (ops, ptid, status, options); | |
b2f4cfde MM |
2492 | } |
2493 | ||
e3cfc1c7 | 2494 | /* Keep a work list of moving threads. */ |
53127008 SM |
2495 | { |
2496 | thread_info *tp; | |
2497 | ||
2498 | ALL_NON_EXITED_THREADS (tp) | |
2499 | { | |
2500 | if (ptid_match (tp->ptid, ptid) | |
2501 | && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) | |
2502 | moving.push_back (tp); | |
2503 | } | |
2504 | } | |
e3cfc1c7 | 2505 | |
53127008 | 2506 | if (moving.empty ()) |
52834460 | 2507 | { |
e3cfc1c7 | 2508 | *status = btrace_step_no_resumed (); |
52834460 | 2509 | |
e3cfc1c7 | 2510 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
23fdd69e | 2511 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2512 | |
e3cfc1c7 | 2513 | return null_ptid; |
52834460 MM |
2514 | } |
2515 | ||
e3cfc1c7 MM |
2516 | /* Step moving threads one by one, one step each, until either one thread |
2517 | reports an event or we run out of threads to step. | |
2518 | ||
2519 | When stepping more than one thread, chances are that some threads reach | |
2520 | the end of their execution history earlier than others. If we reported | |
2521 | this immediately, all-stop on top of non-stop would stop all threads and | |
2522 | resume the same threads next time. And we would report the same thread | |
2523 | having reached the end of its execution history again. | |
2524 | ||
2525 | In the worst case, this would starve the other threads. But even if other | |
2526 | threads would be allowed to make progress, this would result in far too | |
2527 | many intermediate stops. | |
2528 | ||
2529 | We therefore delay the reporting of "no execution history" until we have | |
2530 | nothing else to report. By this time, all threads should have moved to | |
2531 | either the beginning or the end of their execution history. There will | |
2532 | be a single user-visible stop. */ | |
53127008 SM |
2533 | struct thread_info *eventing = NULL; |
2534 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2535 | { |
53127008 | 2536 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2537 | { |
53127008 SM |
2538 | thread_info *tp = moving[ix]; |
2539 | ||
e3cfc1c7 MM |
2540 | *status = record_btrace_step_thread (tp); |
2541 | ||
2542 | switch (status->kind) | |
2543 | { | |
2544 | case TARGET_WAITKIND_IGNORE: | |
2545 | ix++; | |
2546 | break; | |
2547 | ||
2548 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2549 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2550 | break; |
2551 | ||
2552 | default: | |
53127008 | 2553 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2554 | break; |
2555 | } | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | if (eventing == NULL) | |
2560 | { | |
2561 | /* We started with at least one moving thread. This thread must have | |
2562 | either stopped or reached the end of its execution history. | |
2563 | ||
2564 | In the former case, EVENTING must not be NULL. | |
2565 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2566 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2567 | |
2568 | /* We kept threads moving at the end of their execution history. Stop | |
2569 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2570 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2571 | eventing->btrace.flags &= ~BTHR_MOVE; |
2572 | ||
2573 | *status = btrace_step_no_history (); | |
2574 | } | |
2575 | ||
2576 | gdb_assert (eventing != NULL); | |
2577 | ||
2578 | /* We kept threads replaying at the end of their execution history. Stop | |
2579 | replaying EVENTING now that we are going to report its stop. */ | |
2580 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2581 | |
2582 | /* Stop all other threads. */ | |
5953356c | 2583 | if (!target_is_non_stop_p ()) |
53127008 SM |
2584 | { |
2585 | thread_info *tp; | |
2586 | ||
2587 | ALL_NON_EXITED_THREADS (tp) | |
2588 | record_btrace_cancel_resume (tp); | |
2589 | } | |
52834460 | 2590 | |
a6b5be76 MM |
2591 | /* In async mode, we need to announce further events. */ |
2592 | if (target_is_async_p ()) | |
2593 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2594 | ||
52834460 | 2595 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2596 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2597 | |
2598 | /* We moved the replay position but did not update registers. */ | |
e3cfc1c7 MM |
2599 | registers_changed_ptid (eventing->ptid); |
2600 | ||
43792cf0 PA |
2601 | DEBUG ("wait ended by thread %s (%s): %s", |
2602 | print_thread_id (eventing), | |
e3cfc1c7 | 2603 | target_pid_to_str (eventing->ptid), |
23fdd69e | 2604 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2605 | |
e3cfc1c7 | 2606 | return eventing->ptid; |
52834460 MM |
2607 | } |
2608 | ||
6e4879f0 MM |
2609 | /* The to_stop method of target record-btrace. */ |
2610 | ||
2611 | static void | |
2612 | record_btrace_stop (struct target_ops *ops, ptid_t ptid) | |
2613 | { | |
2614 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2615 | ||
2616 | /* As long as we're not replaying, just forward the request. */ | |
a52eab48 MM |
2617 | if ((execution_direction != EXEC_REVERSE) |
2618 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
6e4879f0 MM |
2619 | { |
2620 | ops = ops->beneath; | |
2621 | ops->to_stop (ops, ptid); | |
2622 | } | |
2623 | else | |
2624 | { | |
2625 | struct thread_info *tp; | |
2626 | ||
2627 | ALL_NON_EXITED_THREADS (tp) | |
2628 | if (ptid_match (tp->ptid, ptid)) | |
2629 | { | |
2630 | tp->btrace.flags &= ~BTHR_MOVE; | |
2631 | tp->btrace.flags |= BTHR_STOP; | |
2632 | } | |
2633 | } | |
2634 | } | |
2635 | ||
52834460 MM |
2636 | /* The to_can_execute_reverse method of target record-btrace. */ |
2637 | ||
2638 | static int | |
19db3e69 | 2639 | record_btrace_can_execute_reverse (struct target_ops *self) |
52834460 MM |
2640 | { |
2641 | return 1; | |
2642 | } | |
2643 | ||
9e8915c6 | 2644 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2645 | |
9e8915c6 PA |
2646 | static int |
2647 | record_btrace_stopped_by_sw_breakpoint (struct target_ops *ops) | |
52834460 | 2648 | { |
a52eab48 | 2649 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2650 | { |
2651 | struct thread_info *tp = inferior_thread (); | |
2652 | ||
2653 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2654 | } | |
2655 | ||
2656 | return ops->beneath->to_stopped_by_sw_breakpoint (ops->beneath); | |
2657 | } | |
2658 | ||
2659 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
2660 | record-btrace. */ | |
2661 | ||
2662 | static int | |
2663 | record_btrace_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
2664 | { | |
a52eab48 | 2665 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2666 | return 1; |
2667 | ||
2668 | return ops->beneath->to_supports_stopped_by_sw_breakpoint (ops->beneath); | |
2669 | } | |
2670 | ||
2671 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ | |
2672 | ||
2673 | static int | |
2674 | record_btrace_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2675 | { | |
a52eab48 | 2676 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2677 | { |
2678 | struct thread_info *tp = inferior_thread (); | |
2679 | ||
2680 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2681 | } | |
2682 | ||
2683 | return ops->beneath->to_stopped_by_hw_breakpoint (ops->beneath); | |
2684 | } | |
2685 | ||
2686 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
2687 | record-btrace. */ | |
2688 | ||
2689 | static int | |
2690 | record_btrace_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2691 | { | |
a52eab48 | 2692 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 | 2693 | return 1; |
52834460 | 2694 | |
9e8915c6 | 2695 | return ops->beneath->to_supports_stopped_by_hw_breakpoint (ops->beneath); |
b2f4cfde MM |
2696 | } |
2697 | ||
e8032dde | 2698 | /* The to_update_thread_list method of target record-btrace. */ |
e2887aa3 MM |
2699 | |
2700 | static void | |
e8032dde | 2701 | record_btrace_update_thread_list (struct target_ops *ops) |
e2887aa3 | 2702 | { |
e8032dde | 2703 | /* We don't add or remove threads during replay. */ |
a52eab48 | 2704 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2705 | return; |
2706 | ||
2707 | /* Forward the request. */ | |
e75fdfca | 2708 | ops = ops->beneath; |
e8032dde | 2709 | ops->to_update_thread_list (ops); |
e2887aa3 MM |
2710 | } |
2711 | ||
2712 | /* The to_thread_alive method of target record-btrace. */ | |
2713 | ||
2714 | static int | |
2715 | record_btrace_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2716 | { | |
2717 | /* We don't add or remove threads during replay. */ | |
a52eab48 | 2718 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2719 | return find_thread_ptid (ptid) != NULL; |
2720 | ||
2721 | /* Forward the request. */ | |
e75fdfca TT |
2722 | ops = ops->beneath; |
2723 | return ops->to_thread_alive (ops, ptid); | |
e2887aa3 MM |
2724 | } |
2725 | ||
066ce621 MM |
2726 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2727 | is stopped. */ | |
2728 | ||
2729 | static void | |
2730 | record_btrace_set_replay (struct thread_info *tp, | |
2731 | const struct btrace_insn_iterator *it) | |
2732 | { | |
2733 | struct btrace_thread_info *btinfo; | |
2734 | ||
2735 | btinfo = &tp->btrace; | |
2736 | ||
a0f1b963 | 2737 | if (it == NULL) |
52834460 | 2738 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2739 | else |
2740 | { | |
2741 | if (btinfo->replay == NULL) | |
52834460 | 2742 | record_btrace_start_replaying (tp); |
066ce621 MM |
2743 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2744 | return; | |
2745 | ||
2746 | *btinfo->replay = *it; | |
52834460 | 2747 | registers_changed_ptid (tp->ptid); |
066ce621 MM |
2748 | } |
2749 | ||
52834460 MM |
2750 | /* Start anew from the new replay position. */ |
2751 | record_btrace_clear_histories (btinfo); | |
485668e5 MM |
2752 | |
2753 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
2754 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
066ce621 MM |
2755 | } |
2756 | ||
2757 | /* The to_goto_record_begin method of target record-btrace. */ | |
2758 | ||
2759 | static void | |
08475817 | 2760 | record_btrace_goto_begin (struct target_ops *self) |
066ce621 MM |
2761 | { |
2762 | struct thread_info *tp; | |
2763 | struct btrace_insn_iterator begin; | |
2764 | ||
2765 | tp = require_btrace_thread (); | |
2766 | ||
2767 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2768 | |
2769 | /* Skip gaps at the beginning of the trace. */ | |
2770 | while (btrace_insn_get (&begin) == NULL) | |
2771 | { | |
2772 | unsigned int steps; | |
2773 | ||
2774 | steps = btrace_insn_next (&begin, 1); | |
2775 | if (steps == 0) | |
2776 | error (_("No trace.")); | |
2777 | } | |
2778 | ||
066ce621 | 2779 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2780 | } |
2781 | ||
2782 | /* The to_goto_record_end method of target record-btrace. */ | |
2783 | ||
2784 | static void | |
307a1b91 | 2785 | record_btrace_goto_end (struct target_ops *ops) |
066ce621 MM |
2786 | { |
2787 | struct thread_info *tp; | |
2788 | ||
2789 | tp = require_btrace_thread (); | |
2790 | ||
2791 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2792 | } |
2793 | ||
2794 | /* The to_goto_record method of target record-btrace. */ | |
2795 | ||
2796 | static void | |
606183ac | 2797 | record_btrace_goto (struct target_ops *self, ULONGEST insn) |
066ce621 MM |
2798 | { |
2799 | struct thread_info *tp; | |
2800 | struct btrace_insn_iterator it; | |
2801 | unsigned int number; | |
2802 | int found; | |
2803 | ||
2804 | number = insn; | |
2805 | ||
2806 | /* Check for wrap-arounds. */ | |
2807 | if (number != insn) | |
2808 | error (_("Instruction number out of range.")); | |
2809 | ||
2810 | tp = require_btrace_thread (); | |
2811 | ||
2812 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2813 | |
2814 | /* Check if the instruction could not be found or is a gap. */ | |
2815 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2816 | error (_("No such instruction.")); |
2817 | ||
2818 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2819 | } |
2820 | ||
797094dd MM |
2821 | /* The to_record_stop_replaying method of target record-btrace. */ |
2822 | ||
2823 | static void | |
2824 | record_btrace_stop_replaying_all (struct target_ops *self) | |
2825 | { | |
2826 | struct thread_info *tp; | |
2827 | ||
2828 | ALL_NON_EXITED_THREADS (tp) | |
2829 | record_btrace_stop_replaying (tp); | |
2830 | } | |
2831 | ||
70ad5bff MM |
2832 | /* The to_execution_direction target method. */ |
2833 | ||
2834 | static enum exec_direction_kind | |
2835 | record_btrace_execution_direction (struct target_ops *self) | |
2836 | { | |
2837 | return record_btrace_resume_exec_dir; | |
2838 | } | |
2839 | ||
aef92902 MM |
2840 | /* The to_prepare_to_generate_core target method. */ |
2841 | ||
2842 | static void | |
2843 | record_btrace_prepare_to_generate_core (struct target_ops *self) | |
2844 | { | |
2845 | record_btrace_generating_corefile = 1; | |
2846 | } | |
2847 | ||
2848 | /* The to_done_generating_core target method. */ | |
2849 | ||
2850 | static void | |
2851 | record_btrace_done_generating_core (struct target_ops *self) | |
2852 | { | |
2853 | record_btrace_generating_corefile = 0; | |
2854 | } | |
2855 | ||
afedecd3 MM |
2856 | /* Initialize the record-btrace target ops. */ |
2857 | ||
2858 | static void | |
2859 | init_record_btrace_ops (void) | |
2860 | { | |
2861 | struct target_ops *ops; | |
2862 | ||
2863 | ops = &record_btrace_ops; | |
2864 | ops->to_shortname = "record-btrace"; | |
2865 | ops->to_longname = "Branch tracing target"; | |
2866 | ops->to_doc = "Collect control-flow trace and provide the execution history."; | |
2867 | ops->to_open = record_btrace_open; | |
2868 | ops->to_close = record_btrace_close; | |
b7d2e916 | 2869 | ops->to_async = record_btrace_async; |
afedecd3 | 2870 | ops->to_detach = record_detach; |
c0272db5 | 2871 | ops->to_disconnect = record_btrace_disconnect; |
afedecd3 MM |
2872 | ops->to_mourn_inferior = record_mourn_inferior; |
2873 | ops->to_kill = record_kill; | |
afedecd3 MM |
2874 | ops->to_stop_recording = record_btrace_stop_recording; |
2875 | ops->to_info_record = record_btrace_info; | |
2876 | ops->to_insn_history = record_btrace_insn_history; | |
2877 | ops->to_insn_history_from = record_btrace_insn_history_from; | |
2878 | ops->to_insn_history_range = record_btrace_insn_history_range; | |
2879 | ops->to_call_history = record_btrace_call_history; | |
2880 | ops->to_call_history_from = record_btrace_call_history_from; | |
2881 | ops->to_call_history_range = record_btrace_call_history_range; | |
b158a20f | 2882 | ops->to_record_method = record_btrace_record_method; |
07bbe694 | 2883 | ops->to_record_is_replaying = record_btrace_is_replaying; |
7ff27e9b | 2884 | ops->to_record_will_replay = record_btrace_will_replay; |
797094dd | 2885 | ops->to_record_stop_replaying = record_btrace_stop_replaying_all; |
633785ff MM |
2886 | ops->to_xfer_partial = record_btrace_xfer_partial; |
2887 | ops->to_remove_breakpoint = record_btrace_remove_breakpoint; | |
2888 | ops->to_insert_breakpoint = record_btrace_insert_breakpoint; | |
1f3ef581 MM |
2889 | ops->to_fetch_registers = record_btrace_fetch_registers; |
2890 | ops->to_store_registers = record_btrace_store_registers; | |
2891 | ops->to_prepare_to_store = record_btrace_prepare_to_store; | |
ac01945b TT |
2892 | ops->to_get_unwinder = &record_btrace_to_get_unwinder; |
2893 | ops->to_get_tailcall_unwinder = &record_btrace_to_get_tailcall_unwinder; | |
b2f4cfde | 2894 | ops->to_resume = record_btrace_resume; |
85ad3aaf | 2895 | ops->to_commit_resume = record_btrace_commit_resume; |
b2f4cfde | 2896 | ops->to_wait = record_btrace_wait; |
6e4879f0 | 2897 | ops->to_stop = record_btrace_stop; |
e8032dde | 2898 | ops->to_update_thread_list = record_btrace_update_thread_list; |
e2887aa3 | 2899 | ops->to_thread_alive = record_btrace_thread_alive; |
066ce621 MM |
2900 | ops->to_goto_record_begin = record_btrace_goto_begin; |
2901 | ops->to_goto_record_end = record_btrace_goto_end; | |
2902 | ops->to_goto_record = record_btrace_goto; | |
52834460 | 2903 | ops->to_can_execute_reverse = record_btrace_can_execute_reverse; |
9e8915c6 PA |
2904 | ops->to_stopped_by_sw_breakpoint = record_btrace_stopped_by_sw_breakpoint; |
2905 | ops->to_supports_stopped_by_sw_breakpoint | |
2906 | = record_btrace_supports_stopped_by_sw_breakpoint; | |
2907 | ops->to_stopped_by_hw_breakpoint = record_btrace_stopped_by_hw_breakpoint; | |
2908 | ops->to_supports_stopped_by_hw_breakpoint | |
2909 | = record_btrace_supports_stopped_by_hw_breakpoint; | |
70ad5bff | 2910 | ops->to_execution_direction = record_btrace_execution_direction; |
aef92902 MM |
2911 | ops->to_prepare_to_generate_core = record_btrace_prepare_to_generate_core; |
2912 | ops->to_done_generating_core = record_btrace_done_generating_core; | |
afedecd3 MM |
2913 | ops->to_stratum = record_stratum; |
2914 | ops->to_magic = OPS_MAGIC; | |
2915 | } | |
2916 | ||
f4abbc16 MM |
2917 | /* Start recording in BTS format. */ |
2918 | ||
2919 | static void | |
cdb34d4a | 2920 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2921 | { |
f4abbc16 MM |
2922 | if (args != NULL && *args != 0) |
2923 | error (_("Invalid argument.")); | |
2924 | ||
2925 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2926 | ||
492d29ea PA |
2927 | TRY |
2928 | { | |
95a6b0a1 | 2929 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2930 | } |
2931 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2932 | { |
2933 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2934 | throw_exception (exception); | |
2935 | } | |
492d29ea | 2936 | END_CATCH |
f4abbc16 MM |
2937 | } |
2938 | ||
bc504a31 | 2939 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2940 | |
2941 | static void | |
cdb34d4a | 2942 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2943 | { |
2944 | if (args != NULL && *args != 0) | |
2945 | error (_("Invalid argument.")); | |
2946 | ||
b20a6524 | 2947 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2948 | |
492d29ea PA |
2949 | TRY |
2950 | { | |
95a6b0a1 | 2951 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2952 | } |
2953 | CATCH (exception, RETURN_MASK_ALL) | |
2954 | { | |
2955 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2956 | throw_exception (exception); | |
2957 | } | |
2958 | END_CATCH | |
afedecd3 MM |
2959 | } |
2960 | ||
b20a6524 MM |
2961 | /* Alias for "target record". */ |
2962 | ||
2963 | static void | |
981a3fb3 | 2964 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2965 | { |
2966 | if (args != NULL && *args != 0) | |
2967 | error (_("Invalid argument.")); | |
2968 | ||
2969 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2970 | ||
2971 | TRY | |
2972 | { | |
95a6b0a1 | 2973 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2974 | } |
2975 | CATCH (exception, RETURN_MASK_ALL) | |
2976 | { | |
2977 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2978 | ||
2979 | TRY | |
2980 | { | |
95a6b0a1 | 2981 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2982 | } |
2983 | CATCH (exception, RETURN_MASK_ALL) | |
2984 | { | |
2985 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2986 | throw_exception (exception); | |
2987 | } | |
2988 | END_CATCH | |
2989 | } | |
2990 | END_CATCH | |
2991 | } | |
2992 | ||
67b5c0c1 MM |
2993 | /* The "set record btrace" command. */ |
2994 | ||
2995 | static void | |
981a3fb3 | 2996 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2997 | { |
b85310e1 MM |
2998 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2999 | "by an appropriate subcommand.\n")); | |
3000 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
3001 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
3002 | } |
3003 | ||
3004 | /* The "show record btrace" command. */ | |
3005 | ||
3006 | static void | |
981a3fb3 | 3007 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
3008 | { |
3009 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
3010 | } | |
3011 | ||
3012 | /* The "show record btrace replay-memory-access" command. */ | |
3013 | ||
3014 | static void | |
3015 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
3016 | struct cmd_list_element *c, const char *value) | |
3017 | { | |
3018 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
3019 | replay_memory_access); | |
3020 | } | |
3021 | ||
4a4495d6 MM |
3022 | /* The "set record btrace cpu none" command. */ |
3023 | ||
3024 | static void | |
3025 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
3026 | { | |
3027 | if (args != nullptr && *args != 0) | |
3028 | error (_("Trailing junk: '%s'."), args); | |
3029 | ||
3030 | record_btrace_cpu_state = CS_NONE; | |
3031 | } | |
3032 | ||
3033 | /* The "set record btrace cpu auto" command. */ | |
3034 | ||
3035 | static void | |
3036 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3037 | { | |
3038 | if (args != nullptr && *args != 0) | |
3039 | error (_("Trailing junk: '%s'."), args); | |
3040 | ||
3041 | record_btrace_cpu_state = CS_AUTO; | |
3042 | } | |
3043 | ||
3044 | /* The "set record btrace cpu" command. */ | |
3045 | ||
3046 | static void | |
3047 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3048 | { | |
3049 | if (args == nullptr) | |
3050 | args = ""; | |
3051 | ||
3052 | /* We use a hard-coded vendor string for now. */ | |
3053 | unsigned int family, model, stepping; | |
3054 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3055 | &model, &l1, &stepping, &l2); | |
3056 | if (matches == 3) | |
3057 | { | |
3058 | if (strlen (args) != l2) | |
3059 | error (_("Trailing junk: '%s'."), args + l2); | |
3060 | } | |
3061 | else if (matches == 2) | |
3062 | { | |
3063 | if (strlen (args) != l1) | |
3064 | error (_("Trailing junk: '%s'."), args + l1); | |
3065 | ||
3066 | stepping = 0; | |
3067 | } | |
3068 | else | |
3069 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3070 | ||
3071 | if (USHRT_MAX < family) | |
3072 | error (_("Cpu family too big.")); | |
3073 | ||
3074 | if (UCHAR_MAX < model) | |
3075 | error (_("Cpu model too big.")); | |
3076 | ||
3077 | if (UCHAR_MAX < stepping) | |
3078 | error (_("Cpu stepping too big.")); | |
3079 | ||
3080 | record_btrace_cpu.vendor = CV_INTEL; | |
3081 | record_btrace_cpu.family = family; | |
3082 | record_btrace_cpu.model = model; | |
3083 | record_btrace_cpu.stepping = stepping; | |
3084 | ||
3085 | record_btrace_cpu_state = CS_CPU; | |
3086 | } | |
3087 | ||
3088 | /* The "show record btrace cpu" command. */ | |
3089 | ||
3090 | static void | |
3091 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3092 | { | |
3093 | const char *cpu; | |
3094 | ||
3095 | if (args != nullptr && *args != 0) | |
3096 | error (_("Trailing junk: '%s'."), args); | |
3097 | ||
3098 | switch (record_btrace_cpu_state) | |
3099 | { | |
3100 | case CS_AUTO: | |
3101 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3102 | return; | |
3103 | ||
3104 | case CS_NONE: | |
3105 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3106 | return; | |
3107 | ||
3108 | case CS_CPU: | |
3109 | switch (record_btrace_cpu.vendor) | |
3110 | { | |
3111 | case CV_INTEL: | |
3112 | if (record_btrace_cpu.stepping == 0) | |
3113 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3114 | record_btrace_cpu.family, | |
3115 | record_btrace_cpu.model); | |
3116 | else | |
3117 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3118 | record_btrace_cpu.family, | |
3119 | record_btrace_cpu.model, | |
3120 | record_btrace_cpu.stepping); | |
3121 | return; | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | error (_("Internal error: bad cpu state.")); | |
3126 | } | |
3127 | ||
3128 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3129 | |
3130 | static void | |
981a3fb3 | 3131 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3132 | { |
3133 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3134 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3135 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3136 | all_commands, gdb_stdout); | |
3137 | } | |
3138 | ||
3139 | /* The "show record btrace bts" command. */ | |
3140 | ||
3141 | static void | |
981a3fb3 | 3142 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3143 | { |
3144 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3145 | } | |
3146 | ||
b20a6524 MM |
3147 | /* The "set record btrace pt" command. */ |
3148 | ||
3149 | static void | |
981a3fb3 | 3150 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3151 | { |
3152 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3153 | "by an appropriate subcommand.\n")); | |
3154 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3155 | all_commands, gdb_stdout); | |
3156 | } | |
3157 | ||
3158 | /* The "show record btrace pt" command. */ | |
3159 | ||
3160 | static void | |
981a3fb3 | 3161 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3162 | { |
3163 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3164 | } | |
3165 | ||
3166 | /* The "record bts buffer-size" show value function. */ | |
3167 | ||
3168 | static void | |
3169 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3170 | struct cmd_list_element *c, | |
3171 | const char *value) | |
3172 | { | |
3173 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3174 | value); | |
3175 | } | |
3176 | ||
3177 | /* The "record pt buffer-size" show value function. */ | |
3178 | ||
3179 | static void | |
3180 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3181 | struct cmd_list_element *c, | |
3182 | const char *value) | |
3183 | { | |
3184 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3185 | value); | |
3186 | } | |
3187 | ||
afedecd3 MM |
3188 | /* Initialize btrace commands. */ |
3189 | ||
3190 | void | |
3191 | _initialize_record_btrace (void) | |
3192 | { | |
f4abbc16 MM |
3193 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3194 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3195 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3196 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3197 | ||
f4abbc16 MM |
3198 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3199 | _("\ | |
3200 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3201 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3202 | This format may not be available on all processors."), | |
3203 | &record_btrace_cmdlist); | |
3204 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3205 | ||
b20a6524 MM |
3206 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3207 | _("\ | |
bc504a31 | 3208 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3209 | This format may not be available on all processors."), |
3210 | &record_btrace_cmdlist); | |
3211 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3212 | ||
67b5c0c1 MM |
3213 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3214 | _("Set record options"), &set_record_btrace_cmdlist, | |
3215 | "set record btrace ", 0, &set_record_cmdlist); | |
3216 | ||
3217 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3218 | _("Show record options"), &show_record_btrace_cmdlist, | |
3219 | "show record btrace ", 0, &show_record_cmdlist); | |
3220 | ||
3221 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3222 | replay_memory_access_types, &replay_memory_access, _("\ | |
3223 | Set what memory accesses are allowed during replay."), _("\ | |
3224 | Show what memory accesses are allowed during replay."), | |
3225 | _("Default is READ-ONLY.\n\n\ | |
3226 | The btrace record target does not trace data.\n\ | |
3227 | The memory therefore corresponds to the live target and not \ | |
3228 | to the current replay position.\n\n\ | |
3229 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3230 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3231 | replay."), | |
3232 | NULL, cmd_show_replay_memory_access, | |
3233 | &set_record_btrace_cmdlist, | |
3234 | &show_record_btrace_cmdlist); | |
3235 | ||
4a4495d6 MM |
3236 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3237 | _("\ | |
3238 | Set the cpu to be used for trace decode.\n\n\ | |
3239 | The format is \"<vendor>:<identifier>\" or \"none\" or \"auto\" (default).\n\ | |
3240 | For vendor \"intel\" the format is \"<family>/<model>[/<stepping>]\".\n\n\ | |
3241 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ | |
3242 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3243 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3244 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3245 | When set to \"none\", errata workarounds are disabled."), | |
3246 | &set_record_btrace_cpu_cmdlist, | |
3247 | _("set record btrace cpu "), 1, | |
3248 | &set_record_btrace_cmdlist); | |
3249 | ||
3250 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3251 | Automatically determine the cpu to be used for trace decode."), | |
3252 | &set_record_btrace_cpu_cmdlist); | |
3253 | ||
3254 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3255 | Do not enable errata workarounds for trace decode."), | |
3256 | &set_record_btrace_cpu_cmdlist); | |
3257 | ||
3258 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3259 | Show the cpu to be used for trace decode."), | |
3260 | &show_record_btrace_cmdlist); | |
3261 | ||
d33501a5 MM |
3262 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3263 | _("Set record btrace bts options"), | |
3264 | &set_record_btrace_bts_cmdlist, | |
3265 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3266 | ||
3267 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3268 | _("Show record btrace bts options"), | |
3269 | &show_record_btrace_bts_cmdlist, | |
3270 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3271 | ||
3272 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3273 | &record_btrace_conf.bts.size, | |
3274 | _("Set the record/replay bts buffer size."), | |
3275 | _("Show the record/replay bts buffer size."), _("\ | |
3276 | When starting recording request a trace buffer of this size. \ | |
3277 | The actual buffer size may differ from the requested size. \ | |
3278 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3279 | Bigger buffers allow longer recording but also take more time to process \ | |
3280 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3281 | The trace buffer size may not be changed while recording."), NULL, |
3282 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3283 | &set_record_btrace_bts_cmdlist, |
3284 | &show_record_btrace_bts_cmdlist); | |
3285 | ||
b20a6524 MM |
3286 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3287 | _("Set record btrace pt options"), | |
3288 | &set_record_btrace_pt_cmdlist, | |
3289 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3290 | ||
3291 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3292 | _("Show record btrace pt options"), | |
3293 | &show_record_btrace_pt_cmdlist, | |
3294 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3295 | ||
3296 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3297 | &record_btrace_conf.pt.size, | |
3298 | _("Set the record/replay pt buffer size."), | |
3299 | _("Show the record/replay pt buffer size."), _("\ | |
3300 | Bigger buffers allow longer recording but also take more time to process \ | |
3301 | the recorded execution.\n\ | |
3302 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3303 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3304 | &set_record_btrace_pt_cmdlist, | |
3305 | &show_record_btrace_pt_cmdlist); | |
3306 | ||
afedecd3 MM |
3307 | init_record_btrace_ops (); |
3308 | add_target (&record_btrace_ops); | |
0b722aec MM |
3309 | |
3310 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3311 | xcalloc, xfree); | |
d33501a5 MM |
3312 | |
3313 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3314 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3315 | } |