Commit | Line | Data |
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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
61baf725 | 3 | Copyright (C) 2013-2017 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" | |
29 | #include "observer.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 | ||
47 | /* A new thread observer enabling branch tracing for the new thread. */ | |
48 | static struct observer *record_btrace_thread_observer; | |
49 | ||
67b5c0c1 MM |
50 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
51 | static const char replay_memory_access_read_only[] = "read-only"; | |
52 | static const char replay_memory_access_read_write[] = "read-write"; | |
53 | static const char *const replay_memory_access_types[] = | |
54 | { | |
55 | replay_memory_access_read_only, | |
56 | replay_memory_access_read_write, | |
57 | NULL | |
58 | }; | |
59 | ||
60 | /* The currently allowed replay memory access type. */ | |
61 | static const char *replay_memory_access = replay_memory_access_read_only; | |
62 | ||
63 | /* Command lists for "set/show record btrace". */ | |
64 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
65 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 66 | |
70ad5bff MM |
67 | /* The execution direction of the last resume we got. See record-full.c. */ |
68 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
69 | ||
70 | /* The async event handler for reverse/replay execution. */ | |
71 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
72 | ||
aef92902 MM |
73 | /* A flag indicating that we are currently generating a core file. */ |
74 | static int record_btrace_generating_corefile; | |
75 | ||
f4abbc16 MM |
76 | /* The current branch trace configuration. */ |
77 | static struct btrace_config record_btrace_conf; | |
78 | ||
79 | /* Command list for "record btrace". */ | |
80 | static struct cmd_list_element *record_btrace_cmdlist; | |
81 | ||
d33501a5 MM |
82 | /* Command lists for "set/show record btrace bts". */ |
83 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
84 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
85 | ||
b20a6524 MM |
86 | /* Command lists for "set/show record btrace pt". */ |
87 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
88 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
89 | ||
afedecd3 MM |
90 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
91 | ambiguities when used in if statements. */ | |
92 | ||
93 | #define DEBUG(msg, args...) \ | |
94 | do \ | |
95 | { \ | |
96 | if (record_debug != 0) \ | |
97 | fprintf_unfiltered (gdb_stdlog, \ | |
98 | "[record-btrace] " msg "\n", ##args); \ | |
99 | } \ | |
100 | while (0) | |
101 | ||
102 | ||
103 | /* Update the branch trace for the current thread and return a pointer to its | |
066ce621 | 104 | thread_info. |
afedecd3 MM |
105 | |
106 | Throws an error if there is no thread or no trace. This function never | |
107 | returns NULL. */ | |
108 | ||
066ce621 MM |
109 | static struct thread_info * |
110 | require_btrace_thread (void) | |
afedecd3 MM |
111 | { |
112 | struct thread_info *tp; | |
afedecd3 MM |
113 | |
114 | DEBUG ("require"); | |
115 | ||
116 | tp = find_thread_ptid (inferior_ptid); | |
117 | if (tp == NULL) | |
118 | error (_("No thread.")); | |
119 | ||
cd4007e4 MM |
120 | validate_registers_access (); |
121 | ||
afedecd3 MM |
122 | btrace_fetch (tp); |
123 | ||
6e07b1d2 | 124 | if (btrace_is_empty (tp)) |
afedecd3 MM |
125 | error (_("No trace.")); |
126 | ||
066ce621 MM |
127 | return tp; |
128 | } | |
129 | ||
130 | /* Update the branch trace for the current thread and return a pointer to its | |
131 | branch trace information struct. | |
132 | ||
133 | Throws an error if there is no thread or no trace. This function never | |
134 | returns NULL. */ | |
135 | ||
136 | static struct btrace_thread_info * | |
137 | require_btrace (void) | |
138 | { | |
139 | struct thread_info *tp; | |
140 | ||
141 | tp = require_btrace_thread (); | |
142 | ||
143 | return &tp->btrace; | |
afedecd3 MM |
144 | } |
145 | ||
146 | /* Enable branch tracing for one thread. Warn on errors. */ | |
147 | ||
148 | static void | |
149 | record_btrace_enable_warn (struct thread_info *tp) | |
150 | { | |
492d29ea PA |
151 | TRY |
152 | { | |
153 | btrace_enable (tp, &record_btrace_conf); | |
154 | } | |
155 | CATCH (error, RETURN_MASK_ERROR) | |
156 | { | |
157 | warning ("%s", error.message); | |
158 | } | |
159 | END_CATCH | |
afedecd3 MM |
160 | } |
161 | ||
162 | /* Callback function to disable branch tracing for one thread. */ | |
163 | ||
164 | static void | |
165 | record_btrace_disable_callback (void *arg) | |
166 | { | |
19ba03f4 | 167 | struct thread_info *tp = (struct thread_info *) arg; |
afedecd3 MM |
168 | |
169 | btrace_disable (tp); | |
170 | } | |
171 | ||
172 | /* Enable automatic tracing of new threads. */ | |
173 | ||
174 | static void | |
175 | record_btrace_auto_enable (void) | |
176 | { | |
177 | DEBUG ("attach thread observer"); | |
178 | ||
179 | record_btrace_thread_observer | |
180 | = observer_attach_new_thread (record_btrace_enable_warn); | |
181 | } | |
182 | ||
183 | /* Disable automatic tracing of new threads. */ | |
184 | ||
185 | static void | |
186 | record_btrace_auto_disable (void) | |
187 | { | |
188 | /* The observer may have been detached, already. */ | |
189 | if (record_btrace_thread_observer == NULL) | |
190 | return; | |
191 | ||
192 | DEBUG ("detach thread observer"); | |
193 | ||
194 | observer_detach_new_thread (record_btrace_thread_observer); | |
195 | record_btrace_thread_observer = NULL; | |
196 | } | |
197 | ||
70ad5bff MM |
198 | /* The record-btrace async event handler function. */ |
199 | ||
200 | static void | |
201 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
202 | { | |
203 | inferior_event_handler (INF_REG_EVENT, NULL); | |
204 | } | |
205 | ||
c0272db5 TW |
206 | /* See record-btrace.h. */ |
207 | ||
208 | void | |
209 | record_btrace_push_target (void) | |
210 | { | |
211 | const char *format; | |
212 | ||
213 | record_btrace_auto_enable (); | |
214 | ||
215 | push_target (&record_btrace_ops); | |
216 | ||
217 | record_btrace_async_inferior_event_handler | |
218 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
219 | NULL); | |
220 | record_btrace_generating_corefile = 0; | |
221 | ||
222 | format = btrace_format_short_string (record_btrace_conf.format); | |
223 | observer_notify_record_changed (current_inferior (), 1, "btrace", format); | |
224 | } | |
225 | ||
afedecd3 MM |
226 | /* The to_open method of target record-btrace. */ |
227 | ||
228 | static void | |
014f9477 | 229 | record_btrace_open (const char *args, int from_tty) |
afedecd3 MM |
230 | { |
231 | struct cleanup *disable_chain; | |
232 | struct thread_info *tp; | |
233 | ||
234 | DEBUG ("open"); | |
235 | ||
8213266a | 236 | record_preopen (); |
afedecd3 MM |
237 | |
238 | if (!target_has_execution) | |
239 | error (_("The program is not being run.")); | |
240 | ||
afedecd3 MM |
241 | gdb_assert (record_btrace_thread_observer == NULL); |
242 | ||
243 | disable_chain = make_cleanup (null_cleanup, NULL); | |
034f788c | 244 | ALL_NON_EXITED_THREADS (tp) |
5d5658a1 | 245 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 246 | { |
f4abbc16 | 247 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 MM |
248 | |
249 | make_cleanup (record_btrace_disable_callback, tp); | |
250 | } | |
251 | ||
c0272db5 | 252 | record_btrace_push_target (); |
afedecd3 MM |
253 | |
254 | discard_cleanups (disable_chain); | |
255 | } | |
256 | ||
257 | /* The to_stop_recording method of target record-btrace. */ | |
258 | ||
259 | static void | |
c6cd7c02 | 260 | record_btrace_stop_recording (struct target_ops *self) |
afedecd3 MM |
261 | { |
262 | struct thread_info *tp; | |
263 | ||
264 | DEBUG ("stop recording"); | |
265 | ||
266 | record_btrace_auto_disable (); | |
267 | ||
034f788c | 268 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
269 | if (tp->btrace.target != NULL) |
270 | btrace_disable (tp); | |
271 | } | |
272 | ||
c0272db5 TW |
273 | /* The to_disconnect method of target record-btrace. */ |
274 | ||
275 | static void | |
276 | record_btrace_disconnect (struct target_ops *self, const char *args, | |
277 | int from_tty) | |
278 | { | |
279 | struct target_ops *beneath = self->beneath; | |
280 | ||
281 | /* Do not stop recording, just clean up GDB side. */ | |
282 | unpush_target (self); | |
283 | ||
284 | /* Forward disconnect. */ | |
285 | beneath->to_disconnect (beneath, args, from_tty); | |
286 | } | |
287 | ||
afedecd3 MM |
288 | /* The to_close method of target record-btrace. */ |
289 | ||
290 | static void | |
de90e03d | 291 | record_btrace_close (struct target_ops *self) |
afedecd3 | 292 | { |
568e808b MM |
293 | struct thread_info *tp; |
294 | ||
70ad5bff MM |
295 | if (record_btrace_async_inferior_event_handler != NULL) |
296 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
297 | ||
99c819ee MM |
298 | /* Make sure automatic recording gets disabled even if we did not stop |
299 | recording before closing the record-btrace target. */ | |
300 | record_btrace_auto_disable (); | |
301 | ||
568e808b MM |
302 | /* We should have already stopped recording. |
303 | Tear down btrace in case we have not. */ | |
034f788c | 304 | ALL_NON_EXITED_THREADS (tp) |
568e808b | 305 | btrace_teardown (tp); |
afedecd3 MM |
306 | } |
307 | ||
b7d2e916 PA |
308 | /* The to_async method of target record-btrace. */ |
309 | ||
310 | static void | |
6a3753b3 | 311 | record_btrace_async (struct target_ops *ops, int enable) |
b7d2e916 | 312 | { |
6a3753b3 | 313 | if (enable) |
b7d2e916 PA |
314 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
315 | else | |
316 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
317 | ||
6a3753b3 | 318 | ops->beneath->to_async (ops->beneath, enable); |
b7d2e916 PA |
319 | } |
320 | ||
d33501a5 MM |
321 | /* Adjusts the size and returns a human readable size suffix. */ |
322 | ||
323 | static const char * | |
324 | record_btrace_adjust_size (unsigned int *size) | |
325 | { | |
326 | unsigned int sz; | |
327 | ||
328 | sz = *size; | |
329 | ||
330 | if ((sz & ((1u << 30) - 1)) == 0) | |
331 | { | |
332 | *size = sz >> 30; | |
333 | return "GB"; | |
334 | } | |
335 | else if ((sz & ((1u << 20) - 1)) == 0) | |
336 | { | |
337 | *size = sz >> 20; | |
338 | return "MB"; | |
339 | } | |
340 | else if ((sz & ((1u << 10) - 1)) == 0) | |
341 | { | |
342 | *size = sz >> 10; | |
343 | return "kB"; | |
344 | } | |
345 | else | |
346 | return ""; | |
347 | } | |
348 | ||
349 | /* Print a BTS configuration. */ | |
350 | ||
351 | static void | |
352 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
353 | { | |
354 | const char *suffix; | |
355 | unsigned int size; | |
356 | ||
357 | size = conf->size; | |
358 | if (size > 0) | |
359 | { | |
360 | suffix = record_btrace_adjust_size (&size); | |
361 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
362 | } | |
363 | } | |
364 | ||
bc504a31 | 365 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
366 | |
367 | static void | |
368 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
369 | { | |
370 | const char *suffix; | |
371 | unsigned int size; | |
372 | ||
373 | size = conf->size; | |
374 | if (size > 0) | |
375 | { | |
376 | suffix = record_btrace_adjust_size (&size); | |
377 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
378 | } | |
379 | } | |
380 | ||
d33501a5 MM |
381 | /* Print a branch tracing configuration. */ |
382 | ||
383 | static void | |
384 | record_btrace_print_conf (const struct btrace_config *conf) | |
385 | { | |
386 | printf_unfiltered (_("Recording format: %s.\n"), | |
387 | btrace_format_string (conf->format)); | |
388 | ||
389 | switch (conf->format) | |
390 | { | |
391 | case BTRACE_FORMAT_NONE: | |
392 | return; | |
393 | ||
394 | case BTRACE_FORMAT_BTS: | |
395 | record_btrace_print_bts_conf (&conf->bts); | |
396 | return; | |
b20a6524 MM |
397 | |
398 | case BTRACE_FORMAT_PT: | |
399 | record_btrace_print_pt_conf (&conf->pt); | |
400 | return; | |
d33501a5 MM |
401 | } |
402 | ||
403 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
404 | } | |
405 | ||
afedecd3 MM |
406 | /* The to_info_record method of target record-btrace. */ |
407 | ||
408 | static void | |
630d6a4a | 409 | record_btrace_info (struct target_ops *self) |
afedecd3 MM |
410 | { |
411 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 412 | const struct btrace_config *conf; |
afedecd3 | 413 | struct thread_info *tp; |
31fd9caa | 414 | unsigned int insns, calls, gaps; |
afedecd3 MM |
415 | |
416 | DEBUG ("info"); | |
417 | ||
418 | tp = find_thread_ptid (inferior_ptid); | |
419 | if (tp == NULL) | |
420 | error (_("No thread.")); | |
421 | ||
cd4007e4 MM |
422 | validate_registers_access (); |
423 | ||
f4abbc16 MM |
424 | btinfo = &tp->btrace; |
425 | ||
426 | conf = btrace_conf (btinfo); | |
427 | if (conf != NULL) | |
d33501a5 | 428 | record_btrace_print_conf (conf); |
f4abbc16 | 429 | |
afedecd3 MM |
430 | btrace_fetch (tp); |
431 | ||
23a7fe75 MM |
432 | insns = 0; |
433 | calls = 0; | |
31fd9caa | 434 | gaps = 0; |
23a7fe75 | 435 | |
6e07b1d2 | 436 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
437 | { |
438 | struct btrace_call_iterator call; | |
439 | struct btrace_insn_iterator insn; | |
440 | ||
441 | btrace_call_end (&call, btinfo); | |
442 | btrace_call_prev (&call, 1); | |
5de9129b | 443 | calls = btrace_call_number (&call); |
23a7fe75 MM |
444 | |
445 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 446 | insns = btrace_insn_number (&insn); |
31fd9caa | 447 | |
69090cee TW |
448 | /* If the last instruction is not a gap, it is the current instruction |
449 | that is not actually part of the record. */ | |
450 | if (btrace_insn_get (&insn) != NULL) | |
451 | insns -= 1; | |
31fd9caa MM |
452 | |
453 | gaps = btinfo->ngaps; | |
23a7fe75 | 454 | } |
afedecd3 | 455 | |
31fd9caa | 456 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 PA |
457 | "for thread %s (%s).\n"), insns, calls, gaps, |
458 | print_thread_id (tp), target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
459 | |
460 | if (btrace_is_replaying (tp)) | |
461 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
462 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
463 | } |
464 | ||
31fd9caa MM |
465 | /* Print a decode error. */ |
466 | ||
467 | static void | |
468 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
469 | enum btrace_format format) | |
470 | { | |
508352a9 | 471 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 472 | |
112e8700 | 473 | uiout->text (_("[")); |
508352a9 TW |
474 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
475 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 476 | { |
112e8700 SM |
477 | uiout->text (_("decode error (")); |
478 | uiout->field_int ("errcode", errcode); | |
479 | uiout->text (_("): ")); | |
31fd9caa | 480 | } |
112e8700 SM |
481 | uiout->text (errstr); |
482 | uiout->text (_("]\n")); | |
31fd9caa MM |
483 | } |
484 | ||
afedecd3 MM |
485 | /* Print an unsigned int. */ |
486 | ||
487 | static void | |
488 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
489 | { | |
112e8700 | 490 | uiout->field_fmt (fld, "%u", val); |
afedecd3 MM |
491 | } |
492 | ||
f94cc897 MM |
493 | /* A range of source lines. */ |
494 | ||
495 | struct btrace_line_range | |
496 | { | |
497 | /* The symtab this line is from. */ | |
498 | struct symtab *symtab; | |
499 | ||
500 | /* The first line (inclusive). */ | |
501 | int begin; | |
502 | ||
503 | /* The last line (exclusive). */ | |
504 | int end; | |
505 | }; | |
506 | ||
507 | /* Construct a line range. */ | |
508 | ||
509 | static struct btrace_line_range | |
510 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
511 | { | |
512 | struct btrace_line_range range; | |
513 | ||
514 | range.symtab = symtab; | |
515 | range.begin = begin; | |
516 | range.end = end; | |
517 | ||
518 | return range; | |
519 | } | |
520 | ||
521 | /* Add a line to a line range. */ | |
522 | ||
523 | static struct btrace_line_range | |
524 | btrace_line_range_add (struct btrace_line_range range, int line) | |
525 | { | |
526 | if (range.end <= range.begin) | |
527 | { | |
528 | /* This is the first entry. */ | |
529 | range.begin = line; | |
530 | range.end = line + 1; | |
531 | } | |
532 | else if (line < range.begin) | |
533 | range.begin = line; | |
534 | else if (range.end < line) | |
535 | range.end = line; | |
536 | ||
537 | return range; | |
538 | } | |
539 | ||
540 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
541 | ||
542 | static int | |
543 | btrace_line_range_is_empty (struct btrace_line_range range) | |
544 | { | |
545 | return range.end <= range.begin; | |
546 | } | |
547 | ||
548 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
549 | ||
550 | static int | |
551 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
552 | struct btrace_line_range rhs) | |
553 | { | |
554 | return ((lhs.symtab == rhs.symtab) | |
555 | && (lhs.begin <= rhs.begin) | |
556 | && (rhs.end <= lhs.end)); | |
557 | } | |
558 | ||
559 | /* Find the line range associated with PC. */ | |
560 | ||
561 | static struct btrace_line_range | |
562 | btrace_find_line_range (CORE_ADDR pc) | |
563 | { | |
564 | struct btrace_line_range range; | |
565 | struct linetable_entry *lines; | |
566 | struct linetable *ltable; | |
567 | struct symtab *symtab; | |
568 | int nlines, i; | |
569 | ||
570 | symtab = find_pc_line_symtab (pc); | |
571 | if (symtab == NULL) | |
572 | return btrace_mk_line_range (NULL, 0, 0); | |
573 | ||
574 | ltable = SYMTAB_LINETABLE (symtab); | |
575 | if (ltable == NULL) | |
576 | return btrace_mk_line_range (symtab, 0, 0); | |
577 | ||
578 | nlines = ltable->nitems; | |
579 | lines = ltable->item; | |
580 | if (nlines <= 0) | |
581 | return btrace_mk_line_range (symtab, 0, 0); | |
582 | ||
583 | range = btrace_mk_line_range (symtab, 0, 0); | |
584 | for (i = 0; i < nlines - 1; i++) | |
585 | { | |
586 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
587 | range = btrace_line_range_add (range, lines[i].line); | |
588 | } | |
589 | ||
590 | return range; | |
591 | } | |
592 | ||
593 | /* Print source lines in LINES to UIOUT. | |
594 | ||
595 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
596 | instructions corresponding to that source line. When printing a new source | |
597 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
598 | the new source line. If the source line range in LINES is not empty, this | |
599 | function will leave the cleanup chain for the last printed source line open | |
600 | so instructions can be added to it. */ | |
601 | ||
602 | static void | |
603 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
604 | struct cleanup **ui_item_chain, int flags) | |
605 | { | |
8d297bbf | 606 | print_source_lines_flags psl_flags; |
f94cc897 MM |
607 | int line; |
608 | ||
609 | psl_flags = 0; | |
610 | if (flags & DISASSEMBLY_FILENAME) | |
611 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
612 | ||
613 | for (line = lines.begin; line < lines.end; ++line) | |
614 | { | |
615 | if (*ui_item_chain != NULL) | |
616 | do_cleanups (*ui_item_chain); | |
617 | ||
618 | *ui_item_chain | |
619 | = make_cleanup_ui_out_tuple_begin_end (uiout, "src_and_asm_line"); | |
620 | ||
621 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
622 | ||
623 | make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
624 | } | |
625 | } | |
626 | ||
afedecd3 MM |
627 | /* Disassemble a section of the recorded instruction trace. */ |
628 | ||
629 | static void | |
23a7fe75 | 630 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 631 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
632 | const struct btrace_insn_iterator *begin, |
633 | const struct btrace_insn_iterator *end, int flags) | |
afedecd3 | 634 | { |
f94cc897 | 635 | struct cleanup *cleanups, *ui_item_chain; |
afedecd3 | 636 | struct gdbarch *gdbarch; |
23a7fe75 | 637 | struct btrace_insn_iterator it; |
f94cc897 | 638 | struct btrace_line_range last_lines; |
afedecd3 | 639 | |
23a7fe75 MM |
640 | DEBUG ("itrace (0x%x): [%u; %u)", flags, btrace_insn_number (begin), |
641 | btrace_insn_number (end)); | |
afedecd3 | 642 | |
f94cc897 MM |
643 | flags |= DISASSEMBLY_SPECULATIVE; |
644 | ||
afedecd3 | 645 | gdbarch = target_gdbarch (); |
f94cc897 MM |
646 | last_lines = btrace_mk_line_range (NULL, 0, 0); |
647 | ||
187808b0 | 648 | cleanups = make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); |
f94cc897 MM |
649 | |
650 | /* UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
651 | instructions corresponding to that line. */ | |
652 | ui_item_chain = NULL; | |
afedecd3 | 653 | |
8b172ce7 PA |
654 | gdb_pretty_print_disassembler disasm (gdbarch); |
655 | ||
23a7fe75 | 656 | for (it = *begin; btrace_insn_cmp (&it, end) != 0; btrace_insn_next (&it, 1)) |
afedecd3 | 657 | { |
23a7fe75 MM |
658 | const struct btrace_insn *insn; |
659 | ||
660 | insn = btrace_insn_get (&it); | |
661 | ||
31fd9caa MM |
662 | /* A NULL instruction indicates a gap in the trace. */ |
663 | if (insn == NULL) | |
664 | { | |
665 | const struct btrace_config *conf; | |
666 | ||
667 | conf = btrace_conf (btinfo); | |
afedecd3 | 668 | |
31fd9caa MM |
669 | /* We have trace so we must have a configuration. */ |
670 | gdb_assert (conf != NULL); | |
671 | ||
69090cee TW |
672 | uiout->field_fmt ("insn-number", "%u", |
673 | btrace_insn_number (&it)); | |
674 | uiout->text ("\t"); | |
675 | ||
676 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
677 | conf->format); |
678 | } | |
679 | else | |
680 | { | |
f94cc897 | 681 | struct disasm_insn dinsn; |
da8c46d2 | 682 | |
f94cc897 | 683 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 684 | { |
f94cc897 MM |
685 | struct btrace_line_range lines; |
686 | ||
687 | lines = btrace_find_line_range (insn->pc); | |
688 | if (!btrace_line_range_is_empty (lines) | |
689 | && !btrace_line_range_contains_range (last_lines, lines)) | |
690 | { | |
691 | btrace_print_lines (lines, uiout, &ui_item_chain, flags); | |
692 | last_lines = lines; | |
693 | } | |
694 | else if (ui_item_chain == NULL) | |
695 | { | |
696 | ui_item_chain | |
697 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
698 | "src_and_asm_line"); | |
699 | /* No source information. */ | |
700 | make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
701 | } | |
702 | ||
703 | gdb_assert (ui_item_chain != NULL); | |
da8c46d2 | 704 | } |
da8c46d2 | 705 | |
f94cc897 MM |
706 | memset (&dinsn, 0, sizeof (dinsn)); |
707 | dinsn.number = btrace_insn_number (&it); | |
708 | dinsn.addr = insn->pc; | |
31fd9caa | 709 | |
da8c46d2 | 710 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 711 | dinsn.is_speculative = 1; |
da8c46d2 | 712 | |
8b172ce7 | 713 | disasm.pretty_print_insn (uiout, &dinsn, flags); |
31fd9caa | 714 | } |
afedecd3 | 715 | } |
f94cc897 MM |
716 | |
717 | do_cleanups (cleanups); | |
afedecd3 MM |
718 | } |
719 | ||
720 | /* The to_insn_history method of target record-btrace. */ | |
721 | ||
722 | static void | |
7a6c5609 | 723 | record_btrace_insn_history (struct target_ops *self, int size, int flags) |
afedecd3 MM |
724 | { |
725 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
726 | struct btrace_insn_history *history; |
727 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
728 | struct cleanup *uiout_cleanup; |
729 | struct ui_out *uiout; | |
23a7fe75 | 730 | unsigned int context, covered; |
afedecd3 MM |
731 | |
732 | uiout = current_uiout; | |
733 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
734 | "insn history"); | |
afedecd3 | 735 | context = abs (size); |
afedecd3 MM |
736 | if (context == 0) |
737 | error (_("Bad record instruction-history-size.")); | |
738 | ||
23a7fe75 MM |
739 | btinfo = require_btrace (); |
740 | history = btinfo->insn_history; | |
741 | if (history == NULL) | |
afedecd3 | 742 | { |
07bbe694 | 743 | struct btrace_insn_iterator *replay; |
afedecd3 | 744 | |
23a7fe75 | 745 | DEBUG ("insn-history (0x%x): %d", flags, size); |
afedecd3 | 746 | |
07bbe694 MM |
747 | /* If we're replaying, we start at the replay position. Otherwise, we |
748 | start at the tail of the trace. */ | |
749 | replay = btinfo->replay; | |
750 | if (replay != NULL) | |
751 | begin = *replay; | |
752 | else | |
753 | btrace_insn_end (&begin, btinfo); | |
754 | ||
755 | /* We start from here and expand in the requested direction. Then we | |
756 | expand in the other direction, as well, to fill up any remaining | |
757 | context. */ | |
758 | end = begin; | |
759 | if (size < 0) | |
760 | { | |
761 | /* We want the current position covered, as well. */ | |
762 | covered = btrace_insn_next (&end, 1); | |
763 | covered += btrace_insn_prev (&begin, context - covered); | |
764 | covered += btrace_insn_next (&end, context - covered); | |
765 | } | |
766 | else | |
767 | { | |
768 | covered = btrace_insn_next (&end, context); | |
769 | covered += btrace_insn_prev (&begin, context - covered); | |
770 | } | |
afedecd3 MM |
771 | } |
772 | else | |
773 | { | |
23a7fe75 MM |
774 | begin = history->begin; |
775 | end = history->end; | |
afedecd3 | 776 | |
23a7fe75 MM |
777 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", flags, size, |
778 | btrace_insn_number (&begin), btrace_insn_number (&end)); | |
afedecd3 | 779 | |
23a7fe75 MM |
780 | if (size < 0) |
781 | { | |
782 | end = begin; | |
783 | covered = btrace_insn_prev (&begin, context); | |
784 | } | |
785 | else | |
786 | { | |
787 | begin = end; | |
788 | covered = btrace_insn_next (&end, context); | |
789 | } | |
afedecd3 MM |
790 | } |
791 | ||
23a7fe75 | 792 | if (covered > 0) |
31fd9caa | 793 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
794 | else |
795 | { | |
796 | if (size < 0) | |
797 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
798 | else | |
799 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
800 | } | |
afedecd3 | 801 | |
23a7fe75 | 802 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
803 | do_cleanups (uiout_cleanup); |
804 | } | |
805 | ||
806 | /* The to_insn_history_range method of target record-btrace. */ | |
807 | ||
808 | static void | |
4e99c6b7 TT |
809 | record_btrace_insn_history_range (struct target_ops *self, |
810 | ULONGEST from, ULONGEST to, int flags) | |
afedecd3 MM |
811 | { |
812 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
813 | struct btrace_insn_history *history; |
814 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
815 | struct cleanup *uiout_cleanup; |
816 | struct ui_out *uiout; | |
23a7fe75 MM |
817 | unsigned int low, high; |
818 | int found; | |
afedecd3 MM |
819 | |
820 | uiout = current_uiout; | |
821 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
822 | "insn history"); | |
23a7fe75 MM |
823 | low = from; |
824 | high = to; | |
afedecd3 | 825 | |
23a7fe75 | 826 | DEBUG ("insn-history (0x%x): [%u; %u)", flags, low, high); |
afedecd3 MM |
827 | |
828 | /* Check for wrap-arounds. */ | |
23a7fe75 | 829 | if (low != from || high != to) |
afedecd3 MM |
830 | error (_("Bad range.")); |
831 | ||
0688d04e | 832 | if (high < low) |
afedecd3 MM |
833 | error (_("Bad range.")); |
834 | ||
23a7fe75 | 835 | btinfo = require_btrace (); |
afedecd3 | 836 | |
23a7fe75 MM |
837 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
838 | if (found == 0) | |
839 | error (_("Range out of bounds.")); | |
afedecd3 | 840 | |
23a7fe75 MM |
841 | found = btrace_find_insn_by_number (&end, btinfo, high); |
842 | if (found == 0) | |
0688d04e MM |
843 | { |
844 | /* Silently truncate the range. */ | |
845 | btrace_insn_end (&end, btinfo); | |
846 | } | |
847 | else | |
848 | { | |
849 | /* We want both begin and end to be inclusive. */ | |
850 | btrace_insn_next (&end, 1); | |
851 | } | |
afedecd3 | 852 | |
31fd9caa | 853 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 854 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
855 | |
856 | do_cleanups (uiout_cleanup); | |
857 | } | |
858 | ||
859 | /* The to_insn_history_from method of target record-btrace. */ | |
860 | ||
861 | static void | |
9abc3ff3 TT |
862 | record_btrace_insn_history_from (struct target_ops *self, |
863 | ULONGEST from, int size, int flags) | |
afedecd3 MM |
864 | { |
865 | ULONGEST begin, end, context; | |
866 | ||
867 | context = abs (size); | |
0688d04e MM |
868 | if (context == 0) |
869 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
870 | |
871 | if (size < 0) | |
872 | { | |
873 | end = from; | |
874 | ||
875 | if (from < context) | |
876 | begin = 0; | |
877 | else | |
0688d04e | 878 | begin = from - context + 1; |
afedecd3 MM |
879 | } |
880 | else | |
881 | { | |
882 | begin = from; | |
0688d04e | 883 | end = from + context - 1; |
afedecd3 MM |
884 | |
885 | /* Check for wrap-around. */ | |
886 | if (end < begin) | |
887 | end = ULONGEST_MAX; | |
888 | } | |
889 | ||
4e99c6b7 | 890 | record_btrace_insn_history_range (self, begin, end, flags); |
afedecd3 MM |
891 | } |
892 | ||
893 | /* Print the instruction number range for a function call history line. */ | |
894 | ||
895 | static void | |
23a7fe75 MM |
896 | btrace_call_history_insn_range (struct ui_out *uiout, |
897 | const struct btrace_function *bfun) | |
afedecd3 | 898 | { |
7acbe133 MM |
899 | unsigned int begin, end, size; |
900 | ||
901 | size = VEC_length (btrace_insn_s, bfun->insn); | |
902 | gdb_assert (size > 0); | |
afedecd3 | 903 | |
23a7fe75 | 904 | begin = bfun->insn_offset; |
7acbe133 | 905 | end = begin + size - 1; |
afedecd3 | 906 | |
23a7fe75 | 907 | ui_out_field_uint (uiout, "insn begin", begin); |
112e8700 | 908 | uiout->text (","); |
23a7fe75 | 909 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
910 | } |
911 | ||
ce0dfbea MM |
912 | /* Compute the lowest and highest source line for the instructions in BFUN |
913 | and return them in PBEGIN and PEND. | |
914 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
915 | result from inlining or macro expansion. */ | |
916 | ||
917 | static void | |
918 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
919 | int *pbegin, int *pend) | |
920 | { | |
921 | struct btrace_insn *insn; | |
922 | struct symtab *symtab; | |
923 | struct symbol *sym; | |
924 | unsigned int idx; | |
925 | int begin, end; | |
926 | ||
927 | begin = INT_MAX; | |
928 | end = INT_MIN; | |
929 | ||
930 | sym = bfun->sym; | |
931 | if (sym == NULL) | |
932 | goto out; | |
933 | ||
934 | symtab = symbol_symtab (sym); | |
935 | ||
936 | for (idx = 0; VEC_iterate (btrace_insn_s, bfun->insn, idx, insn); ++idx) | |
937 | { | |
938 | struct symtab_and_line sal; | |
939 | ||
940 | sal = find_pc_line (insn->pc, 0); | |
941 | if (sal.symtab != symtab || sal.line == 0) | |
942 | continue; | |
943 | ||
325fac50 PA |
944 | begin = std::min (begin, sal.line); |
945 | end = std::max (end, sal.line); | |
ce0dfbea MM |
946 | } |
947 | ||
948 | out: | |
949 | *pbegin = begin; | |
950 | *pend = end; | |
951 | } | |
952 | ||
afedecd3 MM |
953 | /* Print the source line information for a function call history line. */ |
954 | ||
955 | static void | |
23a7fe75 MM |
956 | btrace_call_history_src_line (struct ui_out *uiout, |
957 | const struct btrace_function *bfun) | |
afedecd3 MM |
958 | { |
959 | struct symbol *sym; | |
23a7fe75 | 960 | int begin, end; |
afedecd3 MM |
961 | |
962 | sym = bfun->sym; | |
963 | if (sym == NULL) | |
964 | return; | |
965 | ||
112e8700 | 966 | uiout->field_string ("file", |
08be3fe3 | 967 | symtab_to_filename_for_display (symbol_symtab (sym))); |
afedecd3 | 968 | |
ce0dfbea | 969 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 970 | if (end < begin) |
afedecd3 MM |
971 | return; |
972 | ||
112e8700 SM |
973 | uiout->text (":"); |
974 | uiout->field_int ("min line", begin); | |
afedecd3 | 975 | |
23a7fe75 | 976 | if (end == begin) |
afedecd3 MM |
977 | return; |
978 | ||
112e8700 SM |
979 | uiout->text (","); |
980 | uiout->field_int ("max line", end); | |
afedecd3 MM |
981 | } |
982 | ||
0b722aec MM |
983 | /* Get the name of a branch trace function. */ |
984 | ||
985 | static const char * | |
986 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
987 | { | |
988 | struct minimal_symbol *msym; | |
989 | struct symbol *sym; | |
990 | ||
991 | if (bfun == NULL) | |
992 | return "??"; | |
993 | ||
994 | msym = bfun->msym; | |
995 | sym = bfun->sym; | |
996 | ||
997 | if (sym != NULL) | |
998 | return SYMBOL_PRINT_NAME (sym); | |
999 | else if (msym != NULL) | |
efd66ac6 | 1000 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1001 | else |
1002 | return "??"; | |
1003 | } | |
1004 | ||
afedecd3 MM |
1005 | /* Disassemble a section of the recorded function trace. */ |
1006 | ||
1007 | static void | |
23a7fe75 | 1008 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1009 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1010 | const struct btrace_call_iterator *begin, |
1011 | const struct btrace_call_iterator *end, | |
8d297bbf | 1012 | int int_flags) |
afedecd3 | 1013 | { |
23a7fe75 | 1014 | struct btrace_call_iterator it; |
8d297bbf | 1015 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1016 | |
8d297bbf | 1017 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1018 | btrace_call_number (end)); |
afedecd3 | 1019 | |
23a7fe75 | 1020 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1021 | { |
23a7fe75 MM |
1022 | const struct btrace_function *bfun; |
1023 | struct minimal_symbol *msym; | |
1024 | struct symbol *sym; | |
1025 | ||
1026 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1027 | sym = bfun->sym; |
0b722aec | 1028 | msym = bfun->msym; |
23a7fe75 | 1029 | |
afedecd3 | 1030 | /* Print the function index. */ |
23a7fe75 | 1031 | ui_out_field_uint (uiout, "index", bfun->number); |
112e8700 | 1032 | uiout->text ("\t"); |
afedecd3 | 1033 | |
31fd9caa MM |
1034 | /* Indicate gaps in the trace. */ |
1035 | if (bfun->errcode != 0) | |
1036 | { | |
1037 | const struct btrace_config *conf; | |
1038 | ||
1039 | conf = btrace_conf (btinfo); | |
1040 | ||
1041 | /* We have trace so we must have a configuration. */ | |
1042 | gdb_assert (conf != NULL); | |
1043 | ||
1044 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1045 | ||
1046 | continue; | |
1047 | } | |
1048 | ||
8710b709 MM |
1049 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1050 | { | |
1051 | int level = bfun->level + btinfo->level, i; | |
1052 | ||
1053 | for (i = 0; i < level; ++i) | |
112e8700 | 1054 | uiout->text (" "); |
8710b709 MM |
1055 | } |
1056 | ||
1057 | if (sym != NULL) | |
112e8700 | 1058 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym)); |
8710b709 | 1059 | else if (msym != NULL) |
112e8700 SM |
1060 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym)); |
1061 | else if (!uiout->is_mi_like_p ()) | |
1062 | uiout->field_string ("function", "??"); | |
8710b709 | 1063 | |
1e038f67 | 1064 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1065 | { |
112e8700 | 1066 | uiout->text (_("\tinst ")); |
23a7fe75 | 1067 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1068 | } |
1069 | ||
1e038f67 | 1070 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1071 | { |
112e8700 | 1072 | uiout->text (_("\tat ")); |
23a7fe75 | 1073 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1074 | } |
1075 | ||
112e8700 | 1076 | uiout->text ("\n"); |
afedecd3 MM |
1077 | } |
1078 | } | |
1079 | ||
1080 | /* The to_call_history method of target record-btrace. */ | |
1081 | ||
1082 | static void | |
8d297bbf | 1083 | record_btrace_call_history (struct target_ops *self, int size, int int_flags) |
afedecd3 MM |
1084 | { |
1085 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1086 | struct btrace_call_history *history; |
1087 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
1088 | struct cleanup *uiout_cleanup; |
1089 | struct ui_out *uiout; | |
23a7fe75 | 1090 | unsigned int context, covered; |
8d297bbf | 1091 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1092 | |
1093 | uiout = current_uiout; | |
1094 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
1095 | "insn history"); | |
afedecd3 | 1096 | context = abs (size); |
afedecd3 MM |
1097 | if (context == 0) |
1098 | error (_("Bad record function-call-history-size.")); | |
1099 | ||
23a7fe75 MM |
1100 | btinfo = require_btrace (); |
1101 | history = btinfo->call_history; | |
1102 | if (history == NULL) | |
afedecd3 | 1103 | { |
07bbe694 | 1104 | struct btrace_insn_iterator *replay; |
afedecd3 | 1105 | |
8d297bbf | 1106 | DEBUG ("call-history (0x%x): %d", int_flags, size); |
afedecd3 | 1107 | |
07bbe694 MM |
1108 | /* If we're replaying, we start at the replay position. Otherwise, we |
1109 | start at the tail of the trace. */ | |
1110 | replay = btinfo->replay; | |
1111 | if (replay != NULL) | |
1112 | { | |
1113 | begin.function = replay->function; | |
1114 | begin.btinfo = btinfo; | |
1115 | } | |
1116 | else | |
1117 | btrace_call_end (&begin, btinfo); | |
1118 | ||
1119 | /* We start from here and expand in the requested direction. Then we | |
1120 | expand in the other direction, as well, to fill up any remaining | |
1121 | context. */ | |
1122 | end = begin; | |
1123 | if (size < 0) | |
1124 | { | |
1125 | /* We want the current position covered, as well. */ | |
1126 | covered = btrace_call_next (&end, 1); | |
1127 | covered += btrace_call_prev (&begin, context - covered); | |
1128 | covered += btrace_call_next (&end, context - covered); | |
1129 | } | |
1130 | else | |
1131 | { | |
1132 | covered = btrace_call_next (&end, context); | |
1133 | covered += btrace_call_prev (&begin, context- covered); | |
1134 | } | |
afedecd3 MM |
1135 | } |
1136 | else | |
1137 | { | |
23a7fe75 MM |
1138 | begin = history->begin; |
1139 | end = history->end; | |
afedecd3 | 1140 | |
8d297bbf | 1141 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", int_flags, size, |
23a7fe75 | 1142 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1143 | |
23a7fe75 MM |
1144 | if (size < 0) |
1145 | { | |
1146 | end = begin; | |
1147 | covered = btrace_call_prev (&begin, context); | |
1148 | } | |
1149 | else | |
1150 | { | |
1151 | begin = end; | |
1152 | covered = btrace_call_next (&end, context); | |
1153 | } | |
afedecd3 MM |
1154 | } |
1155 | ||
23a7fe75 | 1156 | if (covered > 0) |
8710b709 | 1157 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1158 | else |
1159 | { | |
1160 | if (size < 0) | |
1161 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1162 | else | |
1163 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1164 | } | |
afedecd3 | 1165 | |
23a7fe75 | 1166 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1167 | do_cleanups (uiout_cleanup); |
1168 | } | |
1169 | ||
1170 | /* The to_call_history_range method of target record-btrace. */ | |
1171 | ||
1172 | static void | |
f0d960ea | 1173 | record_btrace_call_history_range (struct target_ops *self, |
8d297bbf PA |
1174 | ULONGEST from, ULONGEST to, |
1175 | int int_flags) | |
afedecd3 MM |
1176 | { |
1177 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1178 | struct btrace_call_history *history; |
1179 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
1180 | struct cleanup *uiout_cleanup; |
1181 | struct ui_out *uiout; | |
23a7fe75 MM |
1182 | unsigned int low, high; |
1183 | int found; | |
8d297bbf | 1184 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1185 | |
1186 | uiout = current_uiout; | |
1187 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
1188 | "func history"); | |
23a7fe75 MM |
1189 | low = from; |
1190 | high = to; | |
afedecd3 | 1191 | |
8d297bbf | 1192 | DEBUG ("call-history (0x%x): [%u; %u)", int_flags, low, high); |
afedecd3 MM |
1193 | |
1194 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1195 | if (low != from || high != to) |
afedecd3 MM |
1196 | error (_("Bad range.")); |
1197 | ||
0688d04e | 1198 | if (high < low) |
afedecd3 MM |
1199 | error (_("Bad range.")); |
1200 | ||
23a7fe75 | 1201 | btinfo = require_btrace (); |
afedecd3 | 1202 | |
23a7fe75 MM |
1203 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1204 | if (found == 0) | |
1205 | error (_("Range out of bounds.")); | |
afedecd3 | 1206 | |
23a7fe75 MM |
1207 | found = btrace_find_call_by_number (&end, btinfo, high); |
1208 | if (found == 0) | |
0688d04e MM |
1209 | { |
1210 | /* Silently truncate the range. */ | |
1211 | btrace_call_end (&end, btinfo); | |
1212 | } | |
1213 | else | |
1214 | { | |
1215 | /* We want both begin and end to be inclusive. */ | |
1216 | btrace_call_next (&end, 1); | |
1217 | } | |
afedecd3 | 1218 | |
8710b709 | 1219 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1220 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1221 | |
1222 | do_cleanups (uiout_cleanup); | |
1223 | } | |
1224 | ||
1225 | /* The to_call_history_from method of target record-btrace. */ | |
1226 | ||
1227 | static void | |
ec0aea04 | 1228 | record_btrace_call_history_from (struct target_ops *self, |
8d297bbf PA |
1229 | ULONGEST from, int size, |
1230 | int int_flags) | |
afedecd3 MM |
1231 | { |
1232 | ULONGEST begin, end, context; | |
8d297bbf | 1233 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1234 | |
1235 | context = abs (size); | |
0688d04e MM |
1236 | if (context == 0) |
1237 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1238 | |
1239 | if (size < 0) | |
1240 | { | |
1241 | end = from; | |
1242 | ||
1243 | if (from < context) | |
1244 | begin = 0; | |
1245 | else | |
0688d04e | 1246 | begin = from - context + 1; |
afedecd3 MM |
1247 | } |
1248 | else | |
1249 | { | |
1250 | begin = from; | |
0688d04e | 1251 | end = from + context - 1; |
afedecd3 MM |
1252 | |
1253 | /* Check for wrap-around. */ | |
1254 | if (end < begin) | |
1255 | end = ULONGEST_MAX; | |
1256 | } | |
1257 | ||
f0d960ea | 1258 | record_btrace_call_history_range (self, begin, end, flags); |
afedecd3 MM |
1259 | } |
1260 | ||
07bbe694 MM |
1261 | /* The to_record_is_replaying method of target record-btrace. */ |
1262 | ||
1263 | static int | |
a52eab48 | 1264 | record_btrace_is_replaying (struct target_ops *self, ptid_t ptid) |
07bbe694 MM |
1265 | { |
1266 | struct thread_info *tp; | |
1267 | ||
034f788c | 1268 | ALL_NON_EXITED_THREADS (tp) |
a52eab48 | 1269 | if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) |
07bbe694 MM |
1270 | return 1; |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
7ff27e9b MM |
1275 | /* The to_record_will_replay method of target record-btrace. */ |
1276 | ||
1277 | static int | |
1278 | record_btrace_will_replay (struct target_ops *self, ptid_t ptid, int dir) | |
1279 | { | |
1280 | return dir == EXEC_REVERSE || record_btrace_is_replaying (self, ptid); | |
1281 | } | |
1282 | ||
633785ff MM |
1283 | /* The to_xfer_partial method of target record-btrace. */ |
1284 | ||
9b409511 | 1285 | static enum target_xfer_status |
633785ff MM |
1286 | record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, |
1287 | const char *annex, gdb_byte *readbuf, | |
1288 | const gdb_byte *writebuf, ULONGEST offset, | |
9b409511 | 1289 | ULONGEST len, ULONGEST *xfered_len) |
633785ff MM |
1290 | { |
1291 | struct target_ops *t; | |
1292 | ||
1293 | /* Filter out requests that don't make sense during replay. */ | |
67b5c0c1 | 1294 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1295 | && !record_btrace_generating_corefile |
4d10e986 | 1296 | && record_btrace_is_replaying (ops, inferior_ptid)) |
633785ff MM |
1297 | { |
1298 | switch (object) | |
1299 | { | |
1300 | case TARGET_OBJECT_MEMORY: | |
1301 | { | |
1302 | struct target_section *section; | |
1303 | ||
1304 | /* We do not allow writing memory in general. */ | |
1305 | if (writebuf != NULL) | |
9b409511 YQ |
1306 | { |
1307 | *xfered_len = len; | |
bc113b4e | 1308 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1309 | } |
633785ff MM |
1310 | |
1311 | /* We allow reading readonly memory. */ | |
1312 | section = target_section_by_addr (ops, offset); | |
1313 | if (section != NULL) | |
1314 | { | |
1315 | /* Check if the section we found is readonly. */ | |
1316 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1317 | section->the_bfd_section) | |
1318 | & SEC_READONLY) != 0) | |
1319 | { | |
1320 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1321 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1322 | break; |
1323 | } | |
1324 | } | |
1325 | ||
9b409511 | 1326 | *xfered_len = len; |
bc113b4e | 1327 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1328 | } |
1329 | } | |
1330 | } | |
1331 | ||
1332 | /* Forward the request. */ | |
e75fdfca TT |
1333 | ops = ops->beneath; |
1334 | return ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, | |
1335 | offset, len, xfered_len); | |
633785ff MM |
1336 | } |
1337 | ||
1338 | /* The to_insert_breakpoint method of target record-btrace. */ | |
1339 | ||
1340 | static int | |
1341 | record_btrace_insert_breakpoint (struct target_ops *ops, | |
1342 | struct gdbarch *gdbarch, | |
1343 | struct bp_target_info *bp_tgt) | |
1344 | { | |
67b5c0c1 MM |
1345 | const char *old; |
1346 | int ret; | |
633785ff MM |
1347 | |
1348 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1349 | duration of this function. */ | |
67b5c0c1 MM |
1350 | old = replay_memory_access; |
1351 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1352 | |
1353 | ret = 0; | |
492d29ea PA |
1354 | TRY |
1355 | { | |
1356 | ret = ops->beneath->to_insert_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
1357 | } | |
492d29ea PA |
1358 | CATCH (except, RETURN_MASK_ALL) |
1359 | { | |
6c63c96a | 1360 | replay_memory_access = old; |
492d29ea PA |
1361 | throw_exception (except); |
1362 | } | |
1363 | END_CATCH | |
6c63c96a | 1364 | replay_memory_access = old; |
633785ff MM |
1365 | |
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | /* The to_remove_breakpoint method of target record-btrace. */ | |
1370 | ||
1371 | static int | |
1372 | record_btrace_remove_breakpoint (struct target_ops *ops, | |
1373 | struct gdbarch *gdbarch, | |
73971819 PA |
1374 | struct bp_target_info *bp_tgt, |
1375 | enum remove_bp_reason reason) | |
633785ff | 1376 | { |
67b5c0c1 MM |
1377 | const char *old; |
1378 | int ret; | |
633785ff MM |
1379 | |
1380 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1381 | duration of this function. */ | |
67b5c0c1 MM |
1382 | old = replay_memory_access; |
1383 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1384 | |
1385 | ret = 0; | |
492d29ea PA |
1386 | TRY |
1387 | { | |
73971819 PA |
1388 | ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt, |
1389 | reason); | |
492d29ea | 1390 | } |
492d29ea PA |
1391 | CATCH (except, RETURN_MASK_ALL) |
1392 | { | |
6c63c96a | 1393 | replay_memory_access = old; |
492d29ea PA |
1394 | throw_exception (except); |
1395 | } | |
1396 | END_CATCH | |
6c63c96a | 1397 | replay_memory_access = old; |
633785ff MM |
1398 | |
1399 | return ret; | |
1400 | } | |
1401 | ||
1f3ef581 MM |
1402 | /* The to_fetch_registers method of target record-btrace. */ |
1403 | ||
1404 | static void | |
1405 | record_btrace_fetch_registers (struct target_ops *ops, | |
1406 | struct regcache *regcache, int regno) | |
1407 | { | |
1408 | struct btrace_insn_iterator *replay; | |
1409 | struct thread_info *tp; | |
1410 | ||
1411 | tp = find_thread_ptid (inferior_ptid); | |
1412 | gdb_assert (tp != NULL); | |
1413 | ||
1414 | replay = tp->btrace.replay; | |
aef92902 | 1415 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1416 | { |
1417 | const struct btrace_insn *insn; | |
1418 | struct gdbarch *gdbarch; | |
1419 | int pcreg; | |
1420 | ||
1421 | gdbarch = get_regcache_arch (regcache); | |
1422 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1423 | if (pcreg < 0) | |
1424 | return; | |
1425 | ||
1426 | /* We can only provide the PC register. */ | |
1427 | if (regno >= 0 && regno != pcreg) | |
1428 | return; | |
1429 | ||
1430 | insn = btrace_insn_get (replay); | |
1431 | gdb_assert (insn != NULL); | |
1432 | ||
1433 | regcache_raw_supply (regcache, regno, &insn->pc); | |
1434 | } | |
1435 | else | |
1436 | { | |
e75fdfca | 1437 | struct target_ops *t = ops->beneath; |
1f3ef581 | 1438 | |
e75fdfca | 1439 | t->to_fetch_registers (t, regcache, regno); |
1f3ef581 MM |
1440 | } |
1441 | } | |
1442 | ||
1443 | /* The to_store_registers method of target record-btrace. */ | |
1444 | ||
1445 | static void | |
1446 | record_btrace_store_registers (struct target_ops *ops, | |
1447 | struct regcache *regcache, int regno) | |
1448 | { | |
1449 | struct target_ops *t; | |
1450 | ||
a52eab48 | 1451 | if (!record_btrace_generating_corefile |
4d10e986 MM |
1452 | && record_btrace_is_replaying (ops, inferior_ptid)) |
1453 | error (_("Cannot write registers while replaying.")); | |
1f3ef581 MM |
1454 | |
1455 | gdb_assert (may_write_registers != 0); | |
1456 | ||
e75fdfca TT |
1457 | t = ops->beneath; |
1458 | t->to_store_registers (t, regcache, regno); | |
1f3ef581 MM |
1459 | } |
1460 | ||
1461 | /* The to_prepare_to_store method of target record-btrace. */ | |
1462 | ||
1463 | static void | |
1464 | record_btrace_prepare_to_store (struct target_ops *ops, | |
1465 | struct regcache *regcache) | |
1466 | { | |
1467 | struct target_ops *t; | |
1468 | ||
a52eab48 | 1469 | if (!record_btrace_generating_corefile |
4d10e986 | 1470 | && record_btrace_is_replaying (ops, inferior_ptid)) |
1f3ef581 MM |
1471 | return; |
1472 | ||
e75fdfca TT |
1473 | t = ops->beneath; |
1474 | t->to_prepare_to_store (t, regcache); | |
1f3ef581 MM |
1475 | } |
1476 | ||
0b722aec MM |
1477 | /* The branch trace frame cache. */ |
1478 | ||
1479 | struct btrace_frame_cache | |
1480 | { | |
1481 | /* The thread. */ | |
1482 | struct thread_info *tp; | |
1483 | ||
1484 | /* The frame info. */ | |
1485 | struct frame_info *frame; | |
1486 | ||
1487 | /* The branch trace function segment. */ | |
1488 | const struct btrace_function *bfun; | |
1489 | }; | |
1490 | ||
1491 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1492 | ||
1493 | static htab_t bfcache; | |
1494 | ||
1495 | /* hash_f for htab_create_alloc of bfcache. */ | |
1496 | ||
1497 | static hashval_t | |
1498 | bfcache_hash (const void *arg) | |
1499 | { | |
19ba03f4 SM |
1500 | const struct btrace_frame_cache *cache |
1501 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1502 | |
1503 | return htab_hash_pointer (cache->frame); | |
1504 | } | |
1505 | ||
1506 | /* eq_f for htab_create_alloc of bfcache. */ | |
1507 | ||
1508 | static int | |
1509 | bfcache_eq (const void *arg1, const void *arg2) | |
1510 | { | |
19ba03f4 SM |
1511 | const struct btrace_frame_cache *cache1 |
1512 | = (const struct btrace_frame_cache *) arg1; | |
1513 | const struct btrace_frame_cache *cache2 | |
1514 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1515 | |
1516 | return cache1->frame == cache2->frame; | |
1517 | } | |
1518 | ||
1519 | /* Create a new btrace frame cache. */ | |
1520 | ||
1521 | static struct btrace_frame_cache * | |
1522 | bfcache_new (struct frame_info *frame) | |
1523 | { | |
1524 | struct btrace_frame_cache *cache; | |
1525 | void **slot; | |
1526 | ||
1527 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1528 | cache->frame = frame; | |
1529 | ||
1530 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1531 | gdb_assert (*slot == NULL); | |
1532 | *slot = cache; | |
1533 | ||
1534 | return cache; | |
1535 | } | |
1536 | ||
1537 | /* Extract the branch trace function from a branch trace frame. */ | |
1538 | ||
1539 | static const struct btrace_function * | |
1540 | btrace_get_frame_function (struct frame_info *frame) | |
1541 | { | |
1542 | const struct btrace_frame_cache *cache; | |
1543 | const struct btrace_function *bfun; | |
1544 | struct btrace_frame_cache pattern; | |
1545 | void **slot; | |
1546 | ||
1547 | pattern.frame = frame; | |
1548 | ||
1549 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1550 | if (slot == NULL) | |
1551 | return NULL; | |
1552 | ||
19ba03f4 | 1553 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1554 | return cache->bfun; |
1555 | } | |
1556 | ||
cecac1ab MM |
1557 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1558 | ||
1559 | static enum unwind_stop_reason | |
1560 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1561 | void **this_cache) | |
1562 | { | |
0b722aec MM |
1563 | const struct btrace_frame_cache *cache; |
1564 | const struct btrace_function *bfun; | |
1565 | ||
19ba03f4 | 1566 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1567 | bfun = cache->bfun; |
1568 | gdb_assert (bfun != NULL); | |
1569 | ||
1570 | if (bfun->up == NULL) | |
1571 | return UNWIND_UNAVAILABLE; | |
1572 | ||
1573 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1574 | } |
1575 | ||
1576 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1577 | ||
1578 | static void | |
1579 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1580 | struct frame_id *this_id) | |
1581 | { | |
0b722aec MM |
1582 | const struct btrace_frame_cache *cache; |
1583 | const struct btrace_function *bfun; | |
1584 | CORE_ADDR code, special; | |
1585 | ||
19ba03f4 | 1586 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1587 | |
1588 | bfun = cache->bfun; | |
1589 | gdb_assert (bfun != NULL); | |
1590 | ||
1591 | while (bfun->segment.prev != NULL) | |
1592 | bfun = bfun->segment.prev; | |
1593 | ||
1594 | code = get_frame_func (this_frame); | |
1595 | special = bfun->number; | |
1596 | ||
1597 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1598 | ||
1599 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1600 | btrace_get_bfun_name (cache->bfun), | |
1601 | core_addr_to_string_nz (this_id->code_addr), | |
1602 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1603 | } |
1604 | ||
1605 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1606 | ||
1607 | static struct value * | |
1608 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1609 | void **this_cache, | |
1610 | int regnum) | |
1611 | { | |
0b722aec MM |
1612 | const struct btrace_frame_cache *cache; |
1613 | const struct btrace_function *bfun, *caller; | |
1614 | const struct btrace_insn *insn; | |
1615 | struct gdbarch *gdbarch; | |
1616 | CORE_ADDR pc; | |
1617 | int pcreg; | |
1618 | ||
1619 | gdbarch = get_frame_arch (this_frame); | |
1620 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1621 | if (pcreg < 0 || regnum != pcreg) | |
1622 | throw_error (NOT_AVAILABLE_ERROR, | |
1623 | _("Registers are not available in btrace record history")); | |
1624 | ||
19ba03f4 | 1625 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1626 | bfun = cache->bfun; |
1627 | gdb_assert (bfun != NULL); | |
1628 | ||
1629 | caller = bfun->up; | |
1630 | if (caller == NULL) | |
1631 | throw_error (NOT_AVAILABLE_ERROR, | |
1632 | _("No caller in btrace record history")); | |
1633 | ||
1634 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) | |
1635 | { | |
1636 | insn = VEC_index (btrace_insn_s, caller->insn, 0); | |
1637 | pc = insn->pc; | |
1638 | } | |
1639 | else | |
1640 | { | |
1641 | insn = VEC_last (btrace_insn_s, caller->insn); | |
1642 | pc = insn->pc; | |
1643 | ||
1644 | pc += gdb_insn_length (gdbarch, pc); | |
1645 | } | |
1646 | ||
1647 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1648 | btrace_get_bfun_name (bfun), bfun->level, | |
1649 | core_addr_to_string_nz (pc)); | |
1650 | ||
1651 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1652 | } |
1653 | ||
1654 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1655 | ||
1656 | static int | |
1657 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1658 | struct frame_info *this_frame, | |
1659 | void **this_cache) | |
1660 | { | |
0b722aec MM |
1661 | const struct btrace_function *bfun; |
1662 | struct btrace_frame_cache *cache; | |
cecac1ab | 1663 | struct thread_info *tp; |
0b722aec | 1664 | struct frame_info *next; |
cecac1ab MM |
1665 | |
1666 | /* THIS_FRAME does not contain a reference to its thread. */ | |
1667 | tp = find_thread_ptid (inferior_ptid); | |
1668 | gdb_assert (tp != NULL); | |
1669 | ||
0b722aec MM |
1670 | bfun = NULL; |
1671 | next = get_next_frame (this_frame); | |
1672 | if (next == NULL) | |
1673 | { | |
1674 | const struct btrace_insn_iterator *replay; | |
1675 | ||
1676 | replay = tp->btrace.replay; | |
1677 | if (replay != NULL) | |
1678 | bfun = replay->function; | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | const struct btrace_function *callee; | |
1683 | ||
1684 | callee = btrace_get_frame_function (next); | |
1685 | if (callee != NULL && (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1686 | bfun = callee->up; | |
1687 | } | |
1688 | ||
1689 | if (bfun == NULL) | |
1690 | return 0; | |
1691 | ||
1692 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1693 | btrace_get_bfun_name (bfun), bfun->level); | |
1694 | ||
1695 | /* This is our frame. Initialize the frame cache. */ | |
1696 | cache = bfcache_new (this_frame); | |
1697 | cache->tp = tp; | |
1698 | cache->bfun = bfun; | |
1699 | ||
1700 | *this_cache = cache; | |
1701 | return 1; | |
1702 | } | |
1703 | ||
1704 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1705 | ||
1706 | static int | |
1707 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1708 | struct frame_info *this_frame, | |
1709 | void **this_cache) | |
1710 | { | |
1711 | const struct btrace_function *bfun, *callee; | |
1712 | struct btrace_frame_cache *cache; | |
1713 | struct frame_info *next; | |
1714 | ||
1715 | next = get_next_frame (this_frame); | |
1716 | if (next == NULL) | |
1717 | return 0; | |
1718 | ||
1719 | callee = btrace_get_frame_function (next); | |
1720 | if (callee == NULL) | |
1721 | return 0; | |
1722 | ||
1723 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1724 | return 0; | |
1725 | ||
1726 | bfun = callee->up; | |
1727 | if (bfun == NULL) | |
1728 | return 0; | |
1729 | ||
1730 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", | |
1731 | btrace_get_bfun_name (bfun), bfun->level); | |
1732 | ||
1733 | /* This is our frame. Initialize the frame cache. */ | |
1734 | cache = bfcache_new (this_frame); | |
1735 | cache->tp = find_thread_ptid (inferior_ptid); | |
1736 | cache->bfun = bfun; | |
1737 | ||
1738 | *this_cache = cache; | |
1739 | return 1; | |
1740 | } | |
1741 | ||
1742 | static void | |
1743 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1744 | { | |
1745 | struct btrace_frame_cache *cache; | |
1746 | void **slot; | |
1747 | ||
19ba03f4 | 1748 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1749 | |
1750 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1751 | gdb_assert (slot != NULL); | |
1752 | ||
1753 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1754 | } |
1755 | ||
1756 | /* btrace recording does not store previous memory content, neither the stack | |
1757 | frames content. Any unwinding would return errorneous results as the stack | |
1758 | contents no longer matches the changed PC value restored from history. | |
1759 | Therefore this unwinder reports any possibly unwound registers as | |
1760 | <unavailable>. */ | |
1761 | ||
0b722aec | 1762 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1763 | { |
1764 | NORMAL_FRAME, | |
1765 | record_btrace_frame_unwind_stop_reason, | |
1766 | record_btrace_frame_this_id, | |
1767 | record_btrace_frame_prev_register, | |
1768 | NULL, | |
0b722aec MM |
1769 | record_btrace_frame_sniffer, |
1770 | record_btrace_frame_dealloc_cache | |
1771 | }; | |
1772 | ||
1773 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1774 | { | |
1775 | TAILCALL_FRAME, | |
1776 | record_btrace_frame_unwind_stop_reason, | |
1777 | record_btrace_frame_this_id, | |
1778 | record_btrace_frame_prev_register, | |
1779 | NULL, | |
1780 | record_btrace_tailcall_frame_sniffer, | |
1781 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1782 | }; |
b2f4cfde | 1783 | |
ac01945b TT |
1784 | /* Implement the to_get_unwinder method. */ |
1785 | ||
1786 | static const struct frame_unwind * | |
1787 | record_btrace_to_get_unwinder (struct target_ops *self) | |
1788 | { | |
1789 | return &record_btrace_frame_unwind; | |
1790 | } | |
1791 | ||
1792 | /* Implement the to_get_tailcall_unwinder method. */ | |
1793 | ||
1794 | static const struct frame_unwind * | |
1795 | record_btrace_to_get_tailcall_unwinder (struct target_ops *self) | |
1796 | { | |
1797 | return &record_btrace_tailcall_frame_unwind; | |
1798 | } | |
1799 | ||
987e68b1 MM |
1800 | /* Return a human-readable string for FLAG. */ |
1801 | ||
1802 | static const char * | |
1803 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1804 | { | |
1805 | switch (flag) | |
1806 | { | |
1807 | case BTHR_STEP: | |
1808 | return "step"; | |
1809 | ||
1810 | case BTHR_RSTEP: | |
1811 | return "reverse-step"; | |
1812 | ||
1813 | case BTHR_CONT: | |
1814 | return "cont"; | |
1815 | ||
1816 | case BTHR_RCONT: | |
1817 | return "reverse-cont"; | |
1818 | ||
1819 | case BTHR_STOP: | |
1820 | return "stop"; | |
1821 | } | |
1822 | ||
1823 | return "<invalid>"; | |
1824 | } | |
1825 | ||
52834460 MM |
1826 | /* Indicate that TP should be resumed according to FLAG. */ |
1827 | ||
1828 | static void | |
1829 | record_btrace_resume_thread (struct thread_info *tp, | |
1830 | enum btrace_thread_flag flag) | |
1831 | { | |
1832 | struct btrace_thread_info *btinfo; | |
1833 | ||
43792cf0 | 1834 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 | 1835 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); |
52834460 MM |
1836 | |
1837 | btinfo = &tp->btrace; | |
1838 | ||
52834460 MM |
1839 | /* Fetch the latest branch trace. */ |
1840 | btrace_fetch (tp); | |
1841 | ||
0ca912df MM |
1842 | /* A resume request overwrites a preceding resume or stop request. */ |
1843 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1844 | btinfo->flags |= flag; |
1845 | } | |
1846 | ||
ec71cc2f MM |
1847 | /* Get the current frame for TP. */ |
1848 | ||
1849 | static struct frame_info * | |
1850 | get_thread_current_frame (struct thread_info *tp) | |
1851 | { | |
1852 | struct frame_info *frame; | |
1853 | ptid_t old_inferior_ptid; | |
1854 | int executing; | |
1855 | ||
1856 | /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ | |
1857 | old_inferior_ptid = inferior_ptid; | |
1858 | inferior_ptid = tp->ptid; | |
1859 | ||
1860 | /* Clear the executing flag to allow changes to the current frame. | |
1861 | We are not actually running, yet. We just started a reverse execution | |
1862 | command or a record goto command. | |
1863 | For the latter, EXECUTING is false and this has no effect. | |
1864 | For the former, EXECUTING is true and we're in to_wait, about to | |
1865 | move the thread. Since we need to recompute the stack, we temporarily | |
1866 | set EXECUTING to flase. */ | |
1867 | executing = is_executing (inferior_ptid); | |
1868 | set_executing (inferior_ptid, 0); | |
1869 | ||
1870 | frame = NULL; | |
1871 | TRY | |
1872 | { | |
1873 | frame = get_current_frame (); | |
1874 | } | |
1875 | CATCH (except, RETURN_MASK_ALL) | |
1876 | { | |
1877 | /* Restore the previous execution state. */ | |
1878 | set_executing (inferior_ptid, executing); | |
1879 | ||
1880 | /* Restore the previous inferior_ptid. */ | |
1881 | inferior_ptid = old_inferior_ptid; | |
1882 | ||
1883 | throw_exception (except); | |
1884 | } | |
1885 | END_CATCH | |
1886 | ||
1887 | /* Restore the previous execution state. */ | |
1888 | set_executing (inferior_ptid, executing); | |
1889 | ||
1890 | /* Restore the previous inferior_ptid. */ | |
1891 | inferior_ptid = old_inferior_ptid; | |
1892 | ||
1893 | return frame; | |
1894 | } | |
1895 | ||
52834460 MM |
1896 | /* Start replaying a thread. */ |
1897 | ||
1898 | static struct btrace_insn_iterator * | |
1899 | record_btrace_start_replaying (struct thread_info *tp) | |
1900 | { | |
52834460 MM |
1901 | struct btrace_insn_iterator *replay; |
1902 | struct btrace_thread_info *btinfo; | |
52834460 MM |
1903 | |
1904 | btinfo = &tp->btrace; | |
1905 | replay = NULL; | |
1906 | ||
1907 | /* We can't start replaying without trace. */ | |
1908 | if (btinfo->begin == NULL) | |
1909 | return NULL; | |
1910 | ||
52834460 MM |
1911 | /* GDB stores the current frame_id when stepping in order to detects steps |
1912 | into subroutines. | |
1913 | Since frames are computed differently when we're replaying, we need to | |
1914 | recompute those stored frames and fix them up so we can still detect | |
1915 | subroutines after we started replaying. */ | |
492d29ea | 1916 | TRY |
52834460 MM |
1917 | { |
1918 | struct frame_info *frame; | |
1919 | struct frame_id frame_id; | |
1920 | int upd_step_frame_id, upd_step_stack_frame_id; | |
1921 | ||
1922 | /* The current frame without replaying - computed via normal unwind. */ | |
ec71cc2f | 1923 | frame = get_thread_current_frame (tp); |
52834460 MM |
1924 | frame_id = get_frame_id (frame); |
1925 | ||
1926 | /* Check if we need to update any stepping-related frame id's. */ | |
1927 | upd_step_frame_id = frame_id_eq (frame_id, | |
1928 | tp->control.step_frame_id); | |
1929 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
1930 | tp->control.step_stack_frame_id); | |
1931 | ||
1932 | /* We start replaying at the end of the branch trace. This corresponds | |
1933 | to the current instruction. */ | |
8d749320 | 1934 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
1935 | btrace_insn_end (replay, btinfo); |
1936 | ||
31fd9caa MM |
1937 | /* Skip gaps at the end of the trace. */ |
1938 | while (btrace_insn_get (replay) == NULL) | |
1939 | { | |
1940 | unsigned int steps; | |
1941 | ||
1942 | steps = btrace_insn_prev (replay, 1); | |
1943 | if (steps == 0) | |
1944 | error (_("No trace.")); | |
1945 | } | |
1946 | ||
52834460 MM |
1947 | /* We're not replaying, yet. */ |
1948 | gdb_assert (btinfo->replay == NULL); | |
1949 | btinfo->replay = replay; | |
1950 | ||
1951 | /* Make sure we're not using any stale registers. */ | |
1952 | registers_changed_ptid (tp->ptid); | |
1953 | ||
1954 | /* The current frame with replaying - computed via btrace unwind. */ | |
ec71cc2f | 1955 | frame = get_thread_current_frame (tp); |
52834460 MM |
1956 | frame_id = get_frame_id (frame); |
1957 | ||
1958 | /* Replace stepping related frames where necessary. */ | |
1959 | if (upd_step_frame_id) | |
1960 | tp->control.step_frame_id = frame_id; | |
1961 | if (upd_step_stack_frame_id) | |
1962 | tp->control.step_stack_frame_id = frame_id; | |
1963 | } | |
492d29ea | 1964 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
1965 | { |
1966 | xfree (btinfo->replay); | |
1967 | btinfo->replay = NULL; | |
1968 | ||
1969 | registers_changed_ptid (tp->ptid); | |
1970 | ||
1971 | throw_exception (except); | |
1972 | } | |
492d29ea | 1973 | END_CATCH |
52834460 MM |
1974 | |
1975 | return replay; | |
1976 | } | |
1977 | ||
1978 | /* Stop replaying a thread. */ | |
1979 | ||
1980 | static void | |
1981 | record_btrace_stop_replaying (struct thread_info *tp) | |
1982 | { | |
1983 | struct btrace_thread_info *btinfo; | |
1984 | ||
1985 | btinfo = &tp->btrace; | |
1986 | ||
1987 | xfree (btinfo->replay); | |
1988 | btinfo->replay = NULL; | |
1989 | ||
1990 | /* Make sure we're not leaving any stale registers. */ | |
1991 | registers_changed_ptid (tp->ptid); | |
1992 | } | |
1993 | ||
e3cfc1c7 MM |
1994 | /* Stop replaying TP if it is at the end of its execution history. */ |
1995 | ||
1996 | static void | |
1997 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
1998 | { | |
1999 | struct btrace_insn_iterator *replay, end; | |
2000 | struct btrace_thread_info *btinfo; | |
2001 | ||
2002 | btinfo = &tp->btrace; | |
2003 | replay = btinfo->replay; | |
2004 | ||
2005 | if (replay == NULL) | |
2006 | return; | |
2007 | ||
2008 | btrace_insn_end (&end, btinfo); | |
2009 | ||
2010 | if (btrace_insn_cmp (replay, &end) == 0) | |
2011 | record_btrace_stop_replaying (tp); | |
2012 | } | |
2013 | ||
b2f4cfde MM |
2014 | /* The to_resume method of target record-btrace. */ |
2015 | ||
2016 | static void | |
2017 | record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, | |
2018 | enum gdb_signal signal) | |
2019 | { | |
0ca912df | 2020 | struct thread_info *tp; |
d2939ba2 | 2021 | enum btrace_thread_flag flag, cflag; |
52834460 | 2022 | |
987e68b1 MM |
2023 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
2024 | execution_direction == EXEC_REVERSE ? "reverse-" : "", | |
2025 | step ? "step" : "cont"); | |
52834460 | 2026 | |
0ca912df MM |
2027 | /* Store the execution direction of the last resume. |
2028 | ||
2029 | If there is more than one to_resume call, we have to rely on infrun | |
2030 | to not change the execution direction in-between. */ | |
70ad5bff MM |
2031 | record_btrace_resume_exec_dir = execution_direction; |
2032 | ||
0ca912df | 2033 | /* As long as we're not replaying, just forward the request. |
52834460 | 2034 | |
0ca912df MM |
2035 | For non-stop targets this means that no thread is replaying. In order to |
2036 | make progress, we may need to explicitly move replaying threads to the end | |
2037 | of their execution history. */ | |
a52eab48 MM |
2038 | if ((execution_direction != EXEC_REVERSE) |
2039 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2040 | { |
e75fdfca | 2041 | ops = ops->beneath; |
04c4fe8c MM |
2042 | ops->to_resume (ops, ptid, step, signal); |
2043 | return; | |
b2f4cfde MM |
2044 | } |
2045 | ||
52834460 | 2046 | /* Compute the btrace thread flag for the requested move. */ |
d2939ba2 MM |
2047 | if (execution_direction == EXEC_REVERSE) |
2048 | { | |
2049 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2050 | cflag = BTHR_RCONT; | |
2051 | } | |
52834460 | 2052 | else |
d2939ba2 MM |
2053 | { |
2054 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2055 | cflag = BTHR_CONT; | |
2056 | } | |
52834460 | 2057 | |
52834460 | 2058 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2059 | record_btrace_wait below. |
2060 | ||
2061 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2062 | if (!target_is_non_stop_p ()) | |
2063 | { | |
2064 | gdb_assert (ptid_match (inferior_ptid, ptid)); | |
2065 | ||
2066 | ALL_NON_EXITED_THREADS (tp) | |
2067 | if (ptid_match (tp->ptid, ptid)) | |
2068 | { | |
2069 | if (ptid_match (tp->ptid, inferior_ptid)) | |
2070 | record_btrace_resume_thread (tp, flag); | |
2071 | else | |
2072 | record_btrace_resume_thread (tp, cflag); | |
2073 | } | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | ALL_NON_EXITED_THREADS (tp) | |
2078 | if (ptid_match (tp->ptid, ptid)) | |
2079 | record_btrace_resume_thread (tp, flag); | |
2080 | } | |
70ad5bff MM |
2081 | |
2082 | /* Async support. */ | |
2083 | if (target_can_async_p ()) | |
2084 | { | |
6a3753b3 | 2085 | target_async (1); |
70ad5bff MM |
2086 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2087 | } | |
52834460 MM |
2088 | } |
2089 | ||
85ad3aaf PA |
2090 | /* The to_commit_resume method of target record-btrace. */ |
2091 | ||
2092 | static void | |
2093 | record_btrace_commit_resume (struct target_ops *ops) | |
2094 | { | |
2095 | if ((execution_direction != EXEC_REVERSE) | |
2096 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
2097 | ops->beneath->to_commit_resume (ops->beneath); | |
2098 | } | |
2099 | ||
987e68b1 MM |
2100 | /* Cancel resuming TP. */ |
2101 | ||
2102 | static void | |
2103 | record_btrace_cancel_resume (struct thread_info *tp) | |
2104 | { | |
2105 | enum btrace_thread_flag flags; | |
2106 | ||
2107 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2108 | if (flags == 0) | |
2109 | return; | |
2110 | ||
43792cf0 PA |
2111 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2112 | print_thread_id (tp), | |
987e68b1 MM |
2113 | target_pid_to_str (tp->ptid), flags, |
2114 | btrace_thread_flag_to_str (flags)); | |
2115 | ||
2116 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2117 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2118 | } |
2119 | ||
2120 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2121 | ||
2122 | static struct target_waitstatus | |
2123 | btrace_step_no_history (void) | |
2124 | { | |
2125 | struct target_waitstatus status; | |
2126 | ||
2127 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2128 | ||
2129 | return status; | |
2130 | } | |
2131 | ||
2132 | /* Return a target_waitstatus indicating that a step finished. */ | |
2133 | ||
2134 | static struct target_waitstatus | |
2135 | btrace_step_stopped (void) | |
2136 | { | |
2137 | struct target_waitstatus status; | |
2138 | ||
2139 | status.kind = TARGET_WAITKIND_STOPPED; | |
2140 | status.value.sig = GDB_SIGNAL_TRAP; | |
2141 | ||
2142 | return status; | |
2143 | } | |
2144 | ||
6e4879f0 MM |
2145 | /* Return a target_waitstatus indicating that a thread was stopped as |
2146 | requested. */ | |
2147 | ||
2148 | static struct target_waitstatus | |
2149 | btrace_step_stopped_on_request (void) | |
2150 | { | |
2151 | struct target_waitstatus status; | |
2152 | ||
2153 | status.kind = TARGET_WAITKIND_STOPPED; | |
2154 | status.value.sig = GDB_SIGNAL_0; | |
2155 | ||
2156 | return status; | |
2157 | } | |
2158 | ||
d825d248 MM |
2159 | /* Return a target_waitstatus indicating a spurious stop. */ |
2160 | ||
2161 | static struct target_waitstatus | |
2162 | btrace_step_spurious (void) | |
2163 | { | |
2164 | struct target_waitstatus status; | |
2165 | ||
2166 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2167 | ||
2168 | return status; | |
2169 | } | |
2170 | ||
e3cfc1c7 MM |
2171 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2172 | ||
2173 | static struct target_waitstatus | |
2174 | btrace_step_no_resumed (void) | |
2175 | { | |
2176 | struct target_waitstatus status; | |
2177 | ||
2178 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2179 | ||
2180 | return status; | |
2181 | } | |
2182 | ||
2183 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2184 | ||
2185 | static struct target_waitstatus | |
2186 | btrace_step_again (void) | |
2187 | { | |
2188 | struct target_waitstatus status; | |
2189 | ||
2190 | status.kind = TARGET_WAITKIND_IGNORE; | |
2191 | ||
2192 | return status; | |
2193 | } | |
2194 | ||
52834460 MM |
2195 | /* Clear the record histories. */ |
2196 | ||
2197 | static void | |
2198 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2199 | { | |
2200 | xfree (btinfo->insn_history); | |
2201 | xfree (btinfo->call_history); | |
2202 | ||
2203 | btinfo->insn_history = NULL; | |
2204 | btinfo->call_history = NULL; | |
2205 | } | |
2206 | ||
3c615f99 MM |
2207 | /* Check whether TP's current replay position is at a breakpoint. */ |
2208 | ||
2209 | static int | |
2210 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2211 | { | |
2212 | struct btrace_insn_iterator *replay; | |
2213 | struct btrace_thread_info *btinfo; | |
2214 | const struct btrace_insn *insn; | |
2215 | struct inferior *inf; | |
2216 | ||
2217 | btinfo = &tp->btrace; | |
2218 | replay = btinfo->replay; | |
2219 | ||
2220 | if (replay == NULL) | |
2221 | return 0; | |
2222 | ||
2223 | insn = btrace_insn_get (replay); | |
2224 | if (insn == NULL) | |
2225 | return 0; | |
2226 | ||
2227 | inf = find_inferior_ptid (tp->ptid); | |
2228 | if (inf == NULL) | |
2229 | return 0; | |
2230 | ||
2231 | return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, | |
2232 | &btinfo->stop_reason); | |
2233 | } | |
2234 | ||
d825d248 | 2235 | /* Step one instruction in forward direction. */ |
52834460 MM |
2236 | |
2237 | static struct target_waitstatus | |
d825d248 | 2238 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2239 | { |
b61ce85c | 2240 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2241 | struct btrace_thread_info *btinfo; |
52834460 | 2242 | |
d825d248 MM |
2243 | btinfo = &tp->btrace; |
2244 | replay = btinfo->replay; | |
2245 | ||
2246 | /* We're done if we're not replaying. */ | |
2247 | if (replay == NULL) | |
2248 | return btrace_step_no_history (); | |
2249 | ||
011c71b6 MM |
2250 | /* Check if we're stepping a breakpoint. */ |
2251 | if (record_btrace_replay_at_breakpoint (tp)) | |
2252 | return btrace_step_stopped (); | |
2253 | ||
b61ce85c MM |
2254 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2255 | jump back to the instruction at which we started. */ | |
2256 | start = *replay; | |
d825d248 MM |
2257 | do |
2258 | { | |
2259 | unsigned int steps; | |
2260 | ||
e3cfc1c7 MM |
2261 | /* We will bail out here if we continue stepping after reaching the end |
2262 | of the execution history. */ | |
d825d248 MM |
2263 | steps = btrace_insn_next (replay, 1); |
2264 | if (steps == 0) | |
b61ce85c MM |
2265 | { |
2266 | *replay = start; | |
2267 | return btrace_step_no_history (); | |
2268 | } | |
d825d248 MM |
2269 | } |
2270 | while (btrace_insn_get (replay) == NULL); | |
2271 | ||
2272 | /* Determine the end of the instruction trace. */ | |
2273 | btrace_insn_end (&end, btinfo); | |
2274 | ||
e3cfc1c7 MM |
2275 | /* The execution trace contains (and ends with) the current instruction. |
2276 | This instruction has not been executed, yet, so the trace really ends | |
2277 | one instruction earlier. */ | |
d825d248 | 2278 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2279 | return btrace_step_no_history (); |
d825d248 MM |
2280 | |
2281 | return btrace_step_spurious (); | |
2282 | } | |
2283 | ||
2284 | /* Step one instruction in backward direction. */ | |
2285 | ||
2286 | static struct target_waitstatus | |
2287 | record_btrace_single_step_backward (struct thread_info *tp) | |
2288 | { | |
b61ce85c | 2289 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2290 | struct btrace_thread_info *btinfo; |
e59fa00f | 2291 | |
52834460 MM |
2292 | btinfo = &tp->btrace; |
2293 | replay = btinfo->replay; | |
2294 | ||
d825d248 MM |
2295 | /* Start replaying if we're not already doing so. */ |
2296 | if (replay == NULL) | |
2297 | replay = record_btrace_start_replaying (tp); | |
2298 | ||
2299 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2300 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2301 | the trace), jump back to the instruction at which we started. */ | |
2302 | start = *replay; | |
d825d248 MM |
2303 | do |
2304 | { | |
2305 | unsigned int steps; | |
2306 | ||
2307 | steps = btrace_insn_prev (replay, 1); | |
2308 | if (steps == 0) | |
b61ce85c MM |
2309 | { |
2310 | *replay = start; | |
2311 | return btrace_step_no_history (); | |
2312 | } | |
d825d248 MM |
2313 | } |
2314 | while (btrace_insn_get (replay) == NULL); | |
2315 | ||
011c71b6 MM |
2316 | /* Check if we're stepping a breakpoint. |
2317 | ||
2318 | For reverse-stepping, this check is after the step. There is logic in | |
2319 | infrun.c that handles reverse-stepping separately. See, for example, | |
2320 | proceed and adjust_pc_after_break. | |
2321 | ||
2322 | This code assumes that for reverse-stepping, PC points to the last | |
2323 | de-executed instruction, whereas for forward-stepping PC points to the | |
2324 | next to-be-executed instruction. */ | |
2325 | if (record_btrace_replay_at_breakpoint (tp)) | |
2326 | return btrace_step_stopped (); | |
2327 | ||
d825d248 MM |
2328 | return btrace_step_spurious (); |
2329 | } | |
2330 | ||
2331 | /* Step a single thread. */ | |
2332 | ||
2333 | static struct target_waitstatus | |
2334 | record_btrace_step_thread (struct thread_info *tp) | |
2335 | { | |
2336 | struct btrace_thread_info *btinfo; | |
2337 | struct target_waitstatus status; | |
2338 | enum btrace_thread_flag flags; | |
2339 | ||
2340 | btinfo = &tp->btrace; | |
2341 | ||
6e4879f0 MM |
2342 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2343 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2344 | |
43792cf0 | 2345 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 MM |
2346 | target_pid_to_str (tp->ptid), flags, |
2347 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2348 | |
6e4879f0 MM |
2349 | /* We can't step without an execution history. */ |
2350 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2351 | return btrace_step_no_history (); | |
2352 | ||
52834460 MM |
2353 | switch (flags) |
2354 | { | |
2355 | default: | |
2356 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2357 | ||
6e4879f0 MM |
2358 | case BTHR_STOP: |
2359 | return btrace_step_stopped_on_request (); | |
2360 | ||
52834460 | 2361 | case BTHR_STEP: |
d825d248 MM |
2362 | status = record_btrace_single_step_forward (tp); |
2363 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2364 | break; |
52834460 MM |
2365 | |
2366 | return btrace_step_stopped (); | |
2367 | ||
2368 | case BTHR_RSTEP: | |
d825d248 MM |
2369 | status = record_btrace_single_step_backward (tp); |
2370 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2371 | break; |
52834460 MM |
2372 | |
2373 | return btrace_step_stopped (); | |
2374 | ||
2375 | case BTHR_CONT: | |
e3cfc1c7 MM |
2376 | status = record_btrace_single_step_forward (tp); |
2377 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2378 | break; | |
52834460 | 2379 | |
e3cfc1c7 MM |
2380 | btinfo->flags |= flags; |
2381 | return btrace_step_again (); | |
52834460 MM |
2382 | |
2383 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2384 | status = record_btrace_single_step_backward (tp); |
2385 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2386 | break; | |
52834460 | 2387 | |
e3cfc1c7 MM |
2388 | btinfo->flags |= flags; |
2389 | return btrace_step_again (); | |
2390 | } | |
d825d248 | 2391 | |
e3cfc1c7 MM |
2392 | /* We keep threads moving at the end of their execution history. The to_wait |
2393 | method will stop the thread for whom the event is reported. */ | |
2394 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2395 | btinfo->flags |= flags; | |
52834460 | 2396 | |
e3cfc1c7 | 2397 | return status; |
b2f4cfde MM |
2398 | } |
2399 | ||
e3cfc1c7 MM |
2400 | /* A vector of threads. */ |
2401 | ||
2402 | typedef struct thread_info * tp_t; | |
2403 | DEF_VEC_P (tp_t); | |
2404 | ||
a6b5be76 MM |
2405 | /* Announce further events if necessary. */ |
2406 | ||
2407 | static void | |
2408 | record_btrace_maybe_mark_async_event (const VEC (tp_t) *moving, | |
2409 | const VEC (tp_t) *no_history) | |
2410 | { | |
2411 | int more_moving, more_no_history; | |
2412 | ||
2413 | more_moving = !VEC_empty (tp_t, moving); | |
2414 | more_no_history = !VEC_empty (tp_t, no_history); | |
2415 | ||
2416 | if (!more_moving && !more_no_history) | |
2417 | return; | |
2418 | ||
2419 | if (more_moving) | |
2420 | DEBUG ("movers pending"); | |
2421 | ||
2422 | if (more_no_history) | |
2423 | DEBUG ("no-history pending"); | |
2424 | ||
2425 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2426 | } | |
2427 | ||
b2f4cfde MM |
2428 | /* The to_wait method of target record-btrace. */ |
2429 | ||
2430 | static ptid_t | |
2431 | record_btrace_wait (struct target_ops *ops, ptid_t ptid, | |
2432 | struct target_waitstatus *status, int options) | |
2433 | { | |
e3cfc1c7 MM |
2434 | VEC (tp_t) *moving, *no_history; |
2435 | struct thread_info *tp, *eventing; | |
2436 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
52834460 MM |
2437 | |
2438 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2439 | ||
b2f4cfde | 2440 | /* As long as we're not replaying, just forward the request. */ |
a52eab48 MM |
2441 | if ((execution_direction != EXEC_REVERSE) |
2442 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2443 | { |
e75fdfca TT |
2444 | ops = ops->beneath; |
2445 | return ops->to_wait (ops, ptid, status, options); | |
b2f4cfde MM |
2446 | } |
2447 | ||
e3cfc1c7 MM |
2448 | moving = NULL; |
2449 | no_history = NULL; | |
2450 | ||
2451 | make_cleanup (VEC_cleanup (tp_t), &moving); | |
2452 | make_cleanup (VEC_cleanup (tp_t), &no_history); | |
2453 | ||
2454 | /* Keep a work list of moving threads. */ | |
2455 | ALL_NON_EXITED_THREADS (tp) | |
2456 | if (ptid_match (tp->ptid, ptid) | |
2457 | && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) | |
2458 | VEC_safe_push (tp_t, moving, tp); | |
2459 | ||
2460 | if (VEC_empty (tp_t, moving)) | |
52834460 | 2461 | { |
e3cfc1c7 | 2462 | *status = btrace_step_no_resumed (); |
52834460 | 2463 | |
e3cfc1c7 MM |
2464 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
2465 | target_waitstatus_to_string (status)); | |
2466 | ||
2467 | do_cleanups (cleanups); | |
2468 | return null_ptid; | |
52834460 MM |
2469 | } |
2470 | ||
e3cfc1c7 MM |
2471 | /* Step moving threads one by one, one step each, until either one thread |
2472 | reports an event or we run out of threads to step. | |
2473 | ||
2474 | When stepping more than one thread, chances are that some threads reach | |
2475 | the end of their execution history earlier than others. If we reported | |
2476 | this immediately, all-stop on top of non-stop would stop all threads and | |
2477 | resume the same threads next time. And we would report the same thread | |
2478 | having reached the end of its execution history again. | |
2479 | ||
2480 | In the worst case, this would starve the other threads. But even if other | |
2481 | threads would be allowed to make progress, this would result in far too | |
2482 | many intermediate stops. | |
2483 | ||
2484 | We therefore delay the reporting of "no execution history" until we have | |
2485 | nothing else to report. By this time, all threads should have moved to | |
2486 | either the beginning or the end of their execution history. There will | |
2487 | be a single user-visible stop. */ | |
2488 | eventing = NULL; | |
2489 | while ((eventing == NULL) && !VEC_empty (tp_t, moving)) | |
2490 | { | |
2491 | unsigned int ix; | |
2492 | ||
2493 | ix = 0; | |
2494 | while ((eventing == NULL) && VEC_iterate (tp_t, moving, ix, tp)) | |
2495 | { | |
2496 | *status = record_btrace_step_thread (tp); | |
2497 | ||
2498 | switch (status->kind) | |
2499 | { | |
2500 | case TARGET_WAITKIND_IGNORE: | |
2501 | ix++; | |
2502 | break; | |
2503 | ||
2504 | case TARGET_WAITKIND_NO_HISTORY: | |
2505 | VEC_safe_push (tp_t, no_history, | |
2506 | VEC_ordered_remove (tp_t, moving, ix)); | |
2507 | break; | |
2508 | ||
2509 | default: | |
2510 | eventing = VEC_unordered_remove (tp_t, moving, ix); | |
2511 | break; | |
2512 | } | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | if (eventing == NULL) | |
2517 | { | |
2518 | /* We started with at least one moving thread. This thread must have | |
2519 | either stopped or reached the end of its execution history. | |
2520 | ||
2521 | In the former case, EVENTING must not be NULL. | |
2522 | In the latter case, NO_HISTORY must not be empty. */ | |
2523 | gdb_assert (!VEC_empty (tp_t, no_history)); | |
2524 | ||
2525 | /* We kept threads moving at the end of their execution history. Stop | |
2526 | EVENTING now that we are going to report its stop. */ | |
2527 | eventing = VEC_unordered_remove (tp_t, no_history, 0); | |
2528 | eventing->btrace.flags &= ~BTHR_MOVE; | |
2529 | ||
2530 | *status = btrace_step_no_history (); | |
2531 | } | |
2532 | ||
2533 | gdb_assert (eventing != NULL); | |
2534 | ||
2535 | /* We kept threads replaying at the end of their execution history. Stop | |
2536 | replaying EVENTING now that we are going to report its stop. */ | |
2537 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2538 | |
2539 | /* Stop all other threads. */ | |
5953356c | 2540 | if (!target_is_non_stop_p ()) |
e3cfc1c7 MM |
2541 | ALL_NON_EXITED_THREADS (tp) |
2542 | record_btrace_cancel_resume (tp); | |
52834460 | 2543 | |
a6b5be76 MM |
2544 | /* In async mode, we need to announce further events. */ |
2545 | if (target_is_async_p ()) | |
2546 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2547 | ||
52834460 | 2548 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2549 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2550 | |
2551 | /* We moved the replay position but did not update registers. */ | |
e3cfc1c7 MM |
2552 | registers_changed_ptid (eventing->ptid); |
2553 | ||
43792cf0 PA |
2554 | DEBUG ("wait ended by thread %s (%s): %s", |
2555 | print_thread_id (eventing), | |
e3cfc1c7 MM |
2556 | target_pid_to_str (eventing->ptid), |
2557 | target_waitstatus_to_string (status)); | |
52834460 | 2558 | |
e3cfc1c7 MM |
2559 | do_cleanups (cleanups); |
2560 | return eventing->ptid; | |
52834460 MM |
2561 | } |
2562 | ||
6e4879f0 MM |
2563 | /* The to_stop method of target record-btrace. */ |
2564 | ||
2565 | static void | |
2566 | record_btrace_stop (struct target_ops *ops, ptid_t ptid) | |
2567 | { | |
2568 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2569 | ||
2570 | /* As long as we're not replaying, just forward the request. */ | |
a52eab48 MM |
2571 | if ((execution_direction != EXEC_REVERSE) |
2572 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
6e4879f0 MM |
2573 | { |
2574 | ops = ops->beneath; | |
2575 | ops->to_stop (ops, ptid); | |
2576 | } | |
2577 | else | |
2578 | { | |
2579 | struct thread_info *tp; | |
2580 | ||
2581 | ALL_NON_EXITED_THREADS (tp) | |
2582 | if (ptid_match (tp->ptid, ptid)) | |
2583 | { | |
2584 | tp->btrace.flags &= ~BTHR_MOVE; | |
2585 | tp->btrace.flags |= BTHR_STOP; | |
2586 | } | |
2587 | } | |
2588 | } | |
2589 | ||
52834460 MM |
2590 | /* The to_can_execute_reverse method of target record-btrace. */ |
2591 | ||
2592 | static int | |
19db3e69 | 2593 | record_btrace_can_execute_reverse (struct target_ops *self) |
52834460 MM |
2594 | { |
2595 | return 1; | |
2596 | } | |
2597 | ||
9e8915c6 | 2598 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2599 | |
9e8915c6 PA |
2600 | static int |
2601 | record_btrace_stopped_by_sw_breakpoint (struct target_ops *ops) | |
52834460 | 2602 | { |
a52eab48 | 2603 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2604 | { |
2605 | struct thread_info *tp = inferior_thread (); | |
2606 | ||
2607 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2608 | } | |
2609 | ||
2610 | return ops->beneath->to_stopped_by_sw_breakpoint (ops->beneath); | |
2611 | } | |
2612 | ||
2613 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
2614 | record-btrace. */ | |
2615 | ||
2616 | static int | |
2617 | record_btrace_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
2618 | { | |
a52eab48 | 2619 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2620 | return 1; |
2621 | ||
2622 | return ops->beneath->to_supports_stopped_by_sw_breakpoint (ops->beneath); | |
2623 | } | |
2624 | ||
2625 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ | |
2626 | ||
2627 | static int | |
2628 | record_btrace_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2629 | { | |
a52eab48 | 2630 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2631 | { |
2632 | struct thread_info *tp = inferior_thread (); | |
2633 | ||
2634 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2635 | } | |
2636 | ||
2637 | return ops->beneath->to_stopped_by_hw_breakpoint (ops->beneath); | |
2638 | } | |
2639 | ||
2640 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
2641 | record-btrace. */ | |
2642 | ||
2643 | static int | |
2644 | record_btrace_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2645 | { | |
a52eab48 | 2646 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 | 2647 | return 1; |
52834460 | 2648 | |
9e8915c6 | 2649 | return ops->beneath->to_supports_stopped_by_hw_breakpoint (ops->beneath); |
b2f4cfde MM |
2650 | } |
2651 | ||
e8032dde | 2652 | /* The to_update_thread_list method of target record-btrace. */ |
e2887aa3 MM |
2653 | |
2654 | static void | |
e8032dde | 2655 | record_btrace_update_thread_list (struct target_ops *ops) |
e2887aa3 | 2656 | { |
e8032dde | 2657 | /* We don't add or remove threads during replay. */ |
a52eab48 | 2658 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2659 | return; |
2660 | ||
2661 | /* Forward the request. */ | |
e75fdfca | 2662 | ops = ops->beneath; |
e8032dde | 2663 | ops->to_update_thread_list (ops); |
e2887aa3 MM |
2664 | } |
2665 | ||
2666 | /* The to_thread_alive method of target record-btrace. */ | |
2667 | ||
2668 | static int | |
2669 | record_btrace_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2670 | { | |
2671 | /* We don't add or remove threads during replay. */ | |
a52eab48 | 2672 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2673 | return find_thread_ptid (ptid) != NULL; |
2674 | ||
2675 | /* Forward the request. */ | |
e75fdfca TT |
2676 | ops = ops->beneath; |
2677 | return ops->to_thread_alive (ops, ptid); | |
e2887aa3 MM |
2678 | } |
2679 | ||
066ce621 MM |
2680 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2681 | is stopped. */ | |
2682 | ||
2683 | static void | |
2684 | record_btrace_set_replay (struct thread_info *tp, | |
2685 | const struct btrace_insn_iterator *it) | |
2686 | { | |
2687 | struct btrace_thread_info *btinfo; | |
2688 | ||
2689 | btinfo = &tp->btrace; | |
2690 | ||
2691 | if (it == NULL || it->function == NULL) | |
52834460 | 2692 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2693 | else |
2694 | { | |
2695 | if (btinfo->replay == NULL) | |
52834460 | 2696 | record_btrace_start_replaying (tp); |
066ce621 MM |
2697 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2698 | return; | |
2699 | ||
2700 | *btinfo->replay = *it; | |
52834460 | 2701 | registers_changed_ptid (tp->ptid); |
066ce621 MM |
2702 | } |
2703 | ||
52834460 MM |
2704 | /* Start anew from the new replay position. */ |
2705 | record_btrace_clear_histories (btinfo); | |
485668e5 MM |
2706 | |
2707 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
2708 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
066ce621 MM |
2709 | } |
2710 | ||
2711 | /* The to_goto_record_begin method of target record-btrace. */ | |
2712 | ||
2713 | static void | |
08475817 | 2714 | record_btrace_goto_begin (struct target_ops *self) |
066ce621 MM |
2715 | { |
2716 | struct thread_info *tp; | |
2717 | struct btrace_insn_iterator begin; | |
2718 | ||
2719 | tp = require_btrace_thread (); | |
2720 | ||
2721 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2722 | |
2723 | /* Skip gaps at the beginning of the trace. */ | |
2724 | while (btrace_insn_get (&begin) == NULL) | |
2725 | { | |
2726 | unsigned int steps; | |
2727 | ||
2728 | steps = btrace_insn_next (&begin, 1); | |
2729 | if (steps == 0) | |
2730 | error (_("No trace.")); | |
2731 | } | |
2732 | ||
066ce621 | 2733 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2734 | } |
2735 | ||
2736 | /* The to_goto_record_end method of target record-btrace. */ | |
2737 | ||
2738 | static void | |
307a1b91 | 2739 | record_btrace_goto_end (struct target_ops *ops) |
066ce621 MM |
2740 | { |
2741 | struct thread_info *tp; | |
2742 | ||
2743 | tp = require_btrace_thread (); | |
2744 | ||
2745 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2746 | } |
2747 | ||
2748 | /* The to_goto_record method of target record-btrace. */ | |
2749 | ||
2750 | static void | |
606183ac | 2751 | record_btrace_goto (struct target_ops *self, ULONGEST insn) |
066ce621 MM |
2752 | { |
2753 | struct thread_info *tp; | |
2754 | struct btrace_insn_iterator it; | |
2755 | unsigned int number; | |
2756 | int found; | |
2757 | ||
2758 | number = insn; | |
2759 | ||
2760 | /* Check for wrap-arounds. */ | |
2761 | if (number != insn) | |
2762 | error (_("Instruction number out of range.")); | |
2763 | ||
2764 | tp = require_btrace_thread (); | |
2765 | ||
2766 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2767 | |
2768 | /* Check if the instruction could not be found or is a gap. */ | |
2769 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2770 | error (_("No such instruction.")); |
2771 | ||
2772 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2773 | } |
2774 | ||
797094dd MM |
2775 | /* The to_record_stop_replaying method of target record-btrace. */ |
2776 | ||
2777 | static void | |
2778 | record_btrace_stop_replaying_all (struct target_ops *self) | |
2779 | { | |
2780 | struct thread_info *tp; | |
2781 | ||
2782 | ALL_NON_EXITED_THREADS (tp) | |
2783 | record_btrace_stop_replaying (tp); | |
2784 | } | |
2785 | ||
70ad5bff MM |
2786 | /* The to_execution_direction target method. */ |
2787 | ||
2788 | static enum exec_direction_kind | |
2789 | record_btrace_execution_direction (struct target_ops *self) | |
2790 | { | |
2791 | return record_btrace_resume_exec_dir; | |
2792 | } | |
2793 | ||
aef92902 MM |
2794 | /* The to_prepare_to_generate_core target method. */ |
2795 | ||
2796 | static void | |
2797 | record_btrace_prepare_to_generate_core (struct target_ops *self) | |
2798 | { | |
2799 | record_btrace_generating_corefile = 1; | |
2800 | } | |
2801 | ||
2802 | /* The to_done_generating_core target method. */ | |
2803 | ||
2804 | static void | |
2805 | record_btrace_done_generating_core (struct target_ops *self) | |
2806 | { | |
2807 | record_btrace_generating_corefile = 0; | |
2808 | } | |
2809 | ||
afedecd3 MM |
2810 | /* Initialize the record-btrace target ops. */ |
2811 | ||
2812 | static void | |
2813 | init_record_btrace_ops (void) | |
2814 | { | |
2815 | struct target_ops *ops; | |
2816 | ||
2817 | ops = &record_btrace_ops; | |
2818 | ops->to_shortname = "record-btrace"; | |
2819 | ops->to_longname = "Branch tracing target"; | |
2820 | ops->to_doc = "Collect control-flow trace and provide the execution history."; | |
2821 | ops->to_open = record_btrace_open; | |
2822 | ops->to_close = record_btrace_close; | |
b7d2e916 | 2823 | ops->to_async = record_btrace_async; |
afedecd3 | 2824 | ops->to_detach = record_detach; |
c0272db5 | 2825 | ops->to_disconnect = record_btrace_disconnect; |
afedecd3 MM |
2826 | ops->to_mourn_inferior = record_mourn_inferior; |
2827 | ops->to_kill = record_kill; | |
afedecd3 MM |
2828 | ops->to_stop_recording = record_btrace_stop_recording; |
2829 | ops->to_info_record = record_btrace_info; | |
2830 | ops->to_insn_history = record_btrace_insn_history; | |
2831 | ops->to_insn_history_from = record_btrace_insn_history_from; | |
2832 | ops->to_insn_history_range = record_btrace_insn_history_range; | |
2833 | ops->to_call_history = record_btrace_call_history; | |
2834 | ops->to_call_history_from = record_btrace_call_history_from; | |
2835 | ops->to_call_history_range = record_btrace_call_history_range; | |
07bbe694 | 2836 | ops->to_record_is_replaying = record_btrace_is_replaying; |
7ff27e9b | 2837 | ops->to_record_will_replay = record_btrace_will_replay; |
797094dd | 2838 | ops->to_record_stop_replaying = record_btrace_stop_replaying_all; |
633785ff MM |
2839 | ops->to_xfer_partial = record_btrace_xfer_partial; |
2840 | ops->to_remove_breakpoint = record_btrace_remove_breakpoint; | |
2841 | ops->to_insert_breakpoint = record_btrace_insert_breakpoint; | |
1f3ef581 MM |
2842 | ops->to_fetch_registers = record_btrace_fetch_registers; |
2843 | ops->to_store_registers = record_btrace_store_registers; | |
2844 | ops->to_prepare_to_store = record_btrace_prepare_to_store; | |
ac01945b TT |
2845 | ops->to_get_unwinder = &record_btrace_to_get_unwinder; |
2846 | ops->to_get_tailcall_unwinder = &record_btrace_to_get_tailcall_unwinder; | |
b2f4cfde | 2847 | ops->to_resume = record_btrace_resume; |
85ad3aaf | 2848 | ops->to_commit_resume = record_btrace_commit_resume; |
b2f4cfde | 2849 | ops->to_wait = record_btrace_wait; |
6e4879f0 | 2850 | ops->to_stop = record_btrace_stop; |
e8032dde | 2851 | ops->to_update_thread_list = record_btrace_update_thread_list; |
e2887aa3 | 2852 | ops->to_thread_alive = record_btrace_thread_alive; |
066ce621 MM |
2853 | ops->to_goto_record_begin = record_btrace_goto_begin; |
2854 | ops->to_goto_record_end = record_btrace_goto_end; | |
2855 | ops->to_goto_record = record_btrace_goto; | |
52834460 | 2856 | ops->to_can_execute_reverse = record_btrace_can_execute_reverse; |
9e8915c6 PA |
2857 | ops->to_stopped_by_sw_breakpoint = record_btrace_stopped_by_sw_breakpoint; |
2858 | ops->to_supports_stopped_by_sw_breakpoint | |
2859 | = record_btrace_supports_stopped_by_sw_breakpoint; | |
2860 | ops->to_stopped_by_hw_breakpoint = record_btrace_stopped_by_hw_breakpoint; | |
2861 | ops->to_supports_stopped_by_hw_breakpoint | |
2862 | = record_btrace_supports_stopped_by_hw_breakpoint; | |
70ad5bff | 2863 | ops->to_execution_direction = record_btrace_execution_direction; |
aef92902 MM |
2864 | ops->to_prepare_to_generate_core = record_btrace_prepare_to_generate_core; |
2865 | ops->to_done_generating_core = record_btrace_done_generating_core; | |
afedecd3 MM |
2866 | ops->to_stratum = record_stratum; |
2867 | ops->to_magic = OPS_MAGIC; | |
2868 | } | |
2869 | ||
f4abbc16 MM |
2870 | /* Start recording in BTS format. */ |
2871 | ||
2872 | static void | |
2873 | cmd_record_btrace_bts_start (char *args, int from_tty) | |
2874 | { | |
f4abbc16 MM |
2875 | if (args != NULL && *args != 0) |
2876 | error (_("Invalid argument.")); | |
2877 | ||
2878 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2879 | ||
492d29ea PA |
2880 | TRY |
2881 | { | |
2882 | execute_command ("target record-btrace", from_tty); | |
2883 | } | |
2884 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2885 | { |
2886 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2887 | throw_exception (exception); | |
2888 | } | |
492d29ea | 2889 | END_CATCH |
f4abbc16 MM |
2890 | } |
2891 | ||
bc504a31 | 2892 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2893 | |
2894 | static void | |
b20a6524 | 2895 | cmd_record_btrace_pt_start (char *args, int from_tty) |
afedecd3 MM |
2896 | { |
2897 | if (args != NULL && *args != 0) | |
2898 | error (_("Invalid argument.")); | |
2899 | ||
b20a6524 | 2900 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2901 | |
492d29ea PA |
2902 | TRY |
2903 | { | |
2904 | execute_command ("target record-btrace", from_tty); | |
2905 | } | |
2906 | CATCH (exception, RETURN_MASK_ALL) | |
2907 | { | |
2908 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2909 | throw_exception (exception); | |
2910 | } | |
2911 | END_CATCH | |
afedecd3 MM |
2912 | } |
2913 | ||
b20a6524 MM |
2914 | /* Alias for "target record". */ |
2915 | ||
2916 | static void | |
2917 | cmd_record_btrace_start (char *args, int from_tty) | |
2918 | { | |
2919 | if (args != NULL && *args != 0) | |
2920 | error (_("Invalid argument.")); | |
2921 | ||
2922 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2923 | ||
2924 | TRY | |
2925 | { | |
2926 | execute_command ("target record-btrace", from_tty); | |
2927 | } | |
2928 | CATCH (exception, RETURN_MASK_ALL) | |
2929 | { | |
2930 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2931 | ||
2932 | TRY | |
2933 | { | |
2934 | execute_command ("target record-btrace", from_tty); | |
2935 | } | |
2936 | CATCH (exception, RETURN_MASK_ALL) | |
2937 | { | |
2938 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2939 | throw_exception (exception); | |
2940 | } | |
2941 | END_CATCH | |
2942 | } | |
2943 | END_CATCH | |
2944 | } | |
2945 | ||
67b5c0c1 MM |
2946 | /* The "set record btrace" command. */ |
2947 | ||
2948 | static void | |
2949 | cmd_set_record_btrace (char *args, int from_tty) | |
2950 | { | |
2951 | cmd_show_list (set_record_btrace_cmdlist, from_tty, ""); | |
2952 | } | |
2953 | ||
2954 | /* The "show record btrace" command. */ | |
2955 | ||
2956 | static void | |
2957 | cmd_show_record_btrace (char *args, int from_tty) | |
2958 | { | |
2959 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2960 | } | |
2961 | ||
2962 | /* The "show record btrace replay-memory-access" command. */ | |
2963 | ||
2964 | static void | |
2965 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2966 | struct cmd_list_element *c, const char *value) | |
2967 | { | |
2968 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2969 | replay_memory_access); | |
2970 | } | |
2971 | ||
d33501a5 MM |
2972 | /* The "set record btrace bts" command. */ |
2973 | ||
2974 | static void | |
2975 | cmd_set_record_btrace_bts (char *args, int from_tty) | |
2976 | { | |
2977 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 2978 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
2979 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
2980 | all_commands, gdb_stdout); | |
2981 | } | |
2982 | ||
2983 | /* The "show record btrace bts" command. */ | |
2984 | ||
2985 | static void | |
2986 | cmd_show_record_btrace_bts (char *args, int from_tty) | |
2987 | { | |
2988 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
2989 | } | |
2990 | ||
b20a6524 MM |
2991 | /* The "set record btrace pt" command. */ |
2992 | ||
2993 | static void | |
2994 | cmd_set_record_btrace_pt (char *args, int from_tty) | |
2995 | { | |
2996 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
2997 | "by an appropriate subcommand.\n")); | |
2998 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
2999 | all_commands, gdb_stdout); | |
3000 | } | |
3001 | ||
3002 | /* The "show record btrace pt" command. */ | |
3003 | ||
3004 | static void | |
3005 | cmd_show_record_btrace_pt (char *args, int from_tty) | |
3006 | { | |
3007 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3008 | } | |
3009 | ||
3010 | /* The "record bts buffer-size" show value function. */ | |
3011 | ||
3012 | static void | |
3013 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3014 | struct cmd_list_element *c, | |
3015 | const char *value) | |
3016 | { | |
3017 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3018 | value); | |
3019 | } | |
3020 | ||
3021 | /* The "record pt buffer-size" show value function. */ | |
3022 | ||
3023 | static void | |
3024 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3025 | struct cmd_list_element *c, | |
3026 | const char *value) | |
3027 | { | |
3028 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3029 | value); | |
3030 | } | |
3031 | ||
afedecd3 MM |
3032 | void _initialize_record_btrace (void); |
3033 | ||
3034 | /* Initialize btrace commands. */ | |
3035 | ||
3036 | void | |
3037 | _initialize_record_btrace (void) | |
3038 | { | |
f4abbc16 MM |
3039 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3040 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3041 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3042 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3043 | ||
f4abbc16 MM |
3044 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3045 | _("\ | |
3046 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3047 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3048 | This format may not be available on all processors."), | |
3049 | &record_btrace_cmdlist); | |
3050 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3051 | ||
b20a6524 MM |
3052 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3053 | _("\ | |
bc504a31 | 3054 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3055 | This format may not be available on all processors."), |
3056 | &record_btrace_cmdlist); | |
3057 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3058 | ||
67b5c0c1 MM |
3059 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3060 | _("Set record options"), &set_record_btrace_cmdlist, | |
3061 | "set record btrace ", 0, &set_record_cmdlist); | |
3062 | ||
3063 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3064 | _("Show record options"), &show_record_btrace_cmdlist, | |
3065 | "show record btrace ", 0, &show_record_cmdlist); | |
3066 | ||
3067 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3068 | replay_memory_access_types, &replay_memory_access, _("\ | |
3069 | Set what memory accesses are allowed during replay."), _("\ | |
3070 | Show what memory accesses are allowed during replay."), | |
3071 | _("Default is READ-ONLY.\n\n\ | |
3072 | The btrace record target does not trace data.\n\ | |
3073 | The memory therefore corresponds to the live target and not \ | |
3074 | to the current replay position.\n\n\ | |
3075 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3076 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3077 | replay."), | |
3078 | NULL, cmd_show_replay_memory_access, | |
3079 | &set_record_btrace_cmdlist, | |
3080 | &show_record_btrace_cmdlist); | |
3081 | ||
d33501a5 MM |
3082 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3083 | _("Set record btrace bts options"), | |
3084 | &set_record_btrace_bts_cmdlist, | |
3085 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3086 | ||
3087 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3088 | _("Show record btrace bts options"), | |
3089 | &show_record_btrace_bts_cmdlist, | |
3090 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3091 | ||
3092 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3093 | &record_btrace_conf.bts.size, | |
3094 | _("Set the record/replay bts buffer size."), | |
3095 | _("Show the record/replay bts buffer size."), _("\ | |
3096 | When starting recording request a trace buffer of this size. \ | |
3097 | The actual buffer size may differ from the requested size. \ | |
3098 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3099 | Bigger buffers allow longer recording but also take more time to process \ | |
3100 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3101 | The trace buffer size may not be changed while recording."), NULL, |
3102 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3103 | &set_record_btrace_bts_cmdlist, |
3104 | &show_record_btrace_bts_cmdlist); | |
3105 | ||
b20a6524 MM |
3106 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3107 | _("Set record btrace pt options"), | |
3108 | &set_record_btrace_pt_cmdlist, | |
3109 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3110 | ||
3111 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3112 | _("Show record btrace pt options"), | |
3113 | &show_record_btrace_pt_cmdlist, | |
3114 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3115 | ||
3116 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3117 | &record_btrace_conf.pt.size, | |
3118 | _("Set the record/replay pt buffer size."), | |
3119 | _("Show the record/replay pt buffer size."), _("\ | |
3120 | Bigger buffers allow longer recording but also take more time to process \ | |
3121 | the recorded execution.\n\ | |
3122 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3123 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3124 | &set_record_btrace_pt_cmdlist, | |
3125 | &show_record_btrace_pt_cmdlist); | |
3126 | ||
afedecd3 MM |
3127 | init_record_btrace_ops (); |
3128 | add_target (&record_btrace_ops); | |
0b722aec MM |
3129 | |
3130 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3131 | xcalloc, xfree); | |
d33501a5 MM |
3132 | |
3133 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3134 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3135 | } |