Commit | Line | Data |
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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
618f726f | 3 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
afedecd3 MM |
4 | |
5 | Contributed by Intel Corp. <markus.t.metzger@intel.com> | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "record.h" | |
24 | #include "gdbthread.h" | |
25 | #include "target.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "disasm.h" | |
28 | #include "observer.h" | |
afedecd3 MM |
29 | #include "cli/cli-utils.h" |
30 | #include "source.h" | |
31 | #include "ui-out.h" | |
32 | #include "symtab.h" | |
33 | #include "filenames.h" | |
1f3ef581 | 34 | #include "regcache.h" |
cecac1ab | 35 | #include "frame-unwind.h" |
0b722aec | 36 | #include "hashtab.h" |
45741a9c | 37 | #include "infrun.h" |
70ad5bff MM |
38 | #include "event-loop.h" |
39 | #include "inf-loop.h" | |
e3cfc1c7 | 40 | #include "vec.h" |
afedecd3 MM |
41 | |
42 | /* The target_ops of record-btrace. */ | |
43 | static struct target_ops record_btrace_ops; | |
44 | ||
45 | /* A new thread observer enabling branch tracing for the new thread. */ | |
46 | static struct observer *record_btrace_thread_observer; | |
47 | ||
67b5c0c1 MM |
48 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
49 | static const char replay_memory_access_read_only[] = "read-only"; | |
50 | static const char replay_memory_access_read_write[] = "read-write"; | |
51 | static const char *const replay_memory_access_types[] = | |
52 | { | |
53 | replay_memory_access_read_only, | |
54 | replay_memory_access_read_write, | |
55 | NULL | |
56 | }; | |
57 | ||
58 | /* The currently allowed replay memory access type. */ | |
59 | static const char *replay_memory_access = replay_memory_access_read_only; | |
60 | ||
61 | /* Command lists for "set/show record btrace". */ | |
62 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
63 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 64 | |
70ad5bff MM |
65 | /* The execution direction of the last resume we got. See record-full.c. */ |
66 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
67 | ||
68 | /* The async event handler for reverse/replay execution. */ | |
69 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
70 | ||
aef92902 MM |
71 | /* A flag indicating that we are currently generating a core file. */ |
72 | static int record_btrace_generating_corefile; | |
73 | ||
f4abbc16 MM |
74 | /* The current branch trace configuration. */ |
75 | static struct btrace_config record_btrace_conf; | |
76 | ||
77 | /* Command list for "record btrace". */ | |
78 | static struct cmd_list_element *record_btrace_cmdlist; | |
79 | ||
d33501a5 MM |
80 | /* Command lists for "set/show record btrace bts". */ |
81 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
82 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
83 | ||
b20a6524 MM |
84 | /* Command lists for "set/show record btrace pt". */ |
85 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
86 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
87 | ||
afedecd3 MM |
88 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
89 | ambiguities when used in if statements. */ | |
90 | ||
91 | #define DEBUG(msg, args...) \ | |
92 | do \ | |
93 | { \ | |
94 | if (record_debug != 0) \ | |
95 | fprintf_unfiltered (gdb_stdlog, \ | |
96 | "[record-btrace] " msg "\n", ##args); \ | |
97 | } \ | |
98 | while (0) | |
99 | ||
100 | ||
101 | /* Update the branch trace for the current thread and return a pointer to its | |
066ce621 | 102 | thread_info. |
afedecd3 MM |
103 | |
104 | Throws an error if there is no thread or no trace. This function never | |
105 | returns NULL. */ | |
106 | ||
066ce621 MM |
107 | static struct thread_info * |
108 | require_btrace_thread (void) | |
afedecd3 MM |
109 | { |
110 | struct thread_info *tp; | |
afedecd3 MM |
111 | |
112 | DEBUG ("require"); | |
113 | ||
114 | tp = find_thread_ptid (inferior_ptid); | |
115 | if (tp == NULL) | |
116 | error (_("No thread.")); | |
117 | ||
118 | btrace_fetch (tp); | |
119 | ||
6e07b1d2 | 120 | if (btrace_is_empty (tp)) |
afedecd3 MM |
121 | error (_("No trace.")); |
122 | ||
066ce621 MM |
123 | return tp; |
124 | } | |
125 | ||
126 | /* Update the branch trace for the current thread and return a pointer to its | |
127 | branch trace information struct. | |
128 | ||
129 | Throws an error if there is no thread or no trace. This function never | |
130 | returns NULL. */ | |
131 | ||
132 | static struct btrace_thread_info * | |
133 | require_btrace (void) | |
134 | { | |
135 | struct thread_info *tp; | |
136 | ||
137 | tp = require_btrace_thread (); | |
138 | ||
139 | return &tp->btrace; | |
afedecd3 MM |
140 | } |
141 | ||
142 | /* Enable branch tracing for one thread. Warn on errors. */ | |
143 | ||
144 | static void | |
145 | record_btrace_enable_warn (struct thread_info *tp) | |
146 | { | |
492d29ea PA |
147 | TRY |
148 | { | |
149 | btrace_enable (tp, &record_btrace_conf); | |
150 | } | |
151 | CATCH (error, RETURN_MASK_ERROR) | |
152 | { | |
153 | warning ("%s", error.message); | |
154 | } | |
155 | END_CATCH | |
afedecd3 MM |
156 | } |
157 | ||
158 | /* Callback function to disable branch tracing for one thread. */ | |
159 | ||
160 | static void | |
161 | record_btrace_disable_callback (void *arg) | |
162 | { | |
19ba03f4 | 163 | struct thread_info *tp = (struct thread_info *) arg; |
afedecd3 MM |
164 | |
165 | btrace_disable (tp); | |
166 | } | |
167 | ||
168 | /* Enable automatic tracing of new threads. */ | |
169 | ||
170 | static void | |
171 | record_btrace_auto_enable (void) | |
172 | { | |
173 | DEBUG ("attach thread observer"); | |
174 | ||
175 | record_btrace_thread_observer | |
176 | = observer_attach_new_thread (record_btrace_enable_warn); | |
177 | } | |
178 | ||
179 | /* Disable automatic tracing of new threads. */ | |
180 | ||
181 | static void | |
182 | record_btrace_auto_disable (void) | |
183 | { | |
184 | /* The observer may have been detached, already. */ | |
185 | if (record_btrace_thread_observer == NULL) | |
186 | return; | |
187 | ||
188 | DEBUG ("detach thread observer"); | |
189 | ||
190 | observer_detach_new_thread (record_btrace_thread_observer); | |
191 | record_btrace_thread_observer = NULL; | |
192 | } | |
193 | ||
70ad5bff MM |
194 | /* The record-btrace async event handler function. */ |
195 | ||
196 | static void | |
197 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
198 | { | |
199 | inferior_event_handler (INF_REG_EVENT, NULL); | |
200 | } | |
201 | ||
afedecd3 MM |
202 | /* The to_open method of target record-btrace. */ |
203 | ||
204 | static void | |
014f9477 | 205 | record_btrace_open (const char *args, int from_tty) |
afedecd3 MM |
206 | { |
207 | struct cleanup *disable_chain; | |
208 | struct thread_info *tp; | |
209 | ||
210 | DEBUG ("open"); | |
211 | ||
8213266a | 212 | record_preopen (); |
afedecd3 MM |
213 | |
214 | if (!target_has_execution) | |
215 | error (_("The program is not being run.")); | |
216 | ||
afedecd3 MM |
217 | gdb_assert (record_btrace_thread_observer == NULL); |
218 | ||
219 | disable_chain = make_cleanup (null_cleanup, NULL); | |
034f788c | 220 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
221 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->num)) |
222 | { | |
f4abbc16 | 223 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 MM |
224 | |
225 | make_cleanup (record_btrace_disable_callback, tp); | |
226 | } | |
227 | ||
228 | record_btrace_auto_enable (); | |
229 | ||
230 | push_target (&record_btrace_ops); | |
231 | ||
70ad5bff MM |
232 | record_btrace_async_inferior_event_handler |
233 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
234 | NULL); | |
aef92902 | 235 | record_btrace_generating_corefile = 0; |
70ad5bff | 236 | |
afedecd3 MM |
237 | observer_notify_record_changed (current_inferior (), 1); |
238 | ||
239 | discard_cleanups (disable_chain); | |
240 | } | |
241 | ||
242 | /* The to_stop_recording method of target record-btrace. */ | |
243 | ||
244 | static void | |
c6cd7c02 | 245 | record_btrace_stop_recording (struct target_ops *self) |
afedecd3 MM |
246 | { |
247 | struct thread_info *tp; | |
248 | ||
249 | DEBUG ("stop recording"); | |
250 | ||
251 | record_btrace_auto_disable (); | |
252 | ||
034f788c | 253 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
254 | if (tp->btrace.target != NULL) |
255 | btrace_disable (tp); | |
256 | } | |
257 | ||
258 | /* The to_close method of target record-btrace. */ | |
259 | ||
260 | static void | |
de90e03d | 261 | record_btrace_close (struct target_ops *self) |
afedecd3 | 262 | { |
568e808b MM |
263 | struct thread_info *tp; |
264 | ||
70ad5bff MM |
265 | if (record_btrace_async_inferior_event_handler != NULL) |
266 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
267 | ||
99c819ee MM |
268 | /* Make sure automatic recording gets disabled even if we did not stop |
269 | recording before closing the record-btrace target. */ | |
270 | record_btrace_auto_disable (); | |
271 | ||
568e808b MM |
272 | /* We should have already stopped recording. |
273 | Tear down btrace in case we have not. */ | |
034f788c | 274 | ALL_NON_EXITED_THREADS (tp) |
568e808b | 275 | btrace_teardown (tp); |
afedecd3 MM |
276 | } |
277 | ||
b7d2e916 PA |
278 | /* The to_async method of target record-btrace. */ |
279 | ||
280 | static void | |
6a3753b3 | 281 | record_btrace_async (struct target_ops *ops, int enable) |
b7d2e916 | 282 | { |
6a3753b3 | 283 | if (enable) |
b7d2e916 PA |
284 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
285 | else | |
286 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
287 | ||
6a3753b3 | 288 | ops->beneath->to_async (ops->beneath, enable); |
b7d2e916 PA |
289 | } |
290 | ||
d33501a5 MM |
291 | /* Adjusts the size and returns a human readable size suffix. */ |
292 | ||
293 | static const char * | |
294 | record_btrace_adjust_size (unsigned int *size) | |
295 | { | |
296 | unsigned int sz; | |
297 | ||
298 | sz = *size; | |
299 | ||
300 | if ((sz & ((1u << 30) - 1)) == 0) | |
301 | { | |
302 | *size = sz >> 30; | |
303 | return "GB"; | |
304 | } | |
305 | else if ((sz & ((1u << 20) - 1)) == 0) | |
306 | { | |
307 | *size = sz >> 20; | |
308 | return "MB"; | |
309 | } | |
310 | else if ((sz & ((1u << 10) - 1)) == 0) | |
311 | { | |
312 | *size = sz >> 10; | |
313 | return "kB"; | |
314 | } | |
315 | else | |
316 | return ""; | |
317 | } | |
318 | ||
319 | /* Print a BTS configuration. */ | |
320 | ||
321 | static void | |
322 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
323 | { | |
324 | const char *suffix; | |
325 | unsigned int size; | |
326 | ||
327 | size = conf->size; | |
328 | if (size > 0) | |
329 | { | |
330 | suffix = record_btrace_adjust_size (&size); | |
331 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
332 | } | |
333 | } | |
334 | ||
b20a6524 MM |
335 | /* Print an Intel(R) Processor Trace configuration. */ |
336 | ||
337 | static void | |
338 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
339 | { | |
340 | const char *suffix; | |
341 | unsigned int size; | |
342 | ||
343 | size = conf->size; | |
344 | if (size > 0) | |
345 | { | |
346 | suffix = record_btrace_adjust_size (&size); | |
347 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
348 | } | |
349 | } | |
350 | ||
d33501a5 MM |
351 | /* Print a branch tracing configuration. */ |
352 | ||
353 | static void | |
354 | record_btrace_print_conf (const struct btrace_config *conf) | |
355 | { | |
356 | printf_unfiltered (_("Recording format: %s.\n"), | |
357 | btrace_format_string (conf->format)); | |
358 | ||
359 | switch (conf->format) | |
360 | { | |
361 | case BTRACE_FORMAT_NONE: | |
362 | return; | |
363 | ||
364 | case BTRACE_FORMAT_BTS: | |
365 | record_btrace_print_bts_conf (&conf->bts); | |
366 | return; | |
b20a6524 MM |
367 | |
368 | case BTRACE_FORMAT_PT: | |
369 | record_btrace_print_pt_conf (&conf->pt); | |
370 | return; | |
d33501a5 MM |
371 | } |
372 | ||
373 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
374 | } | |
375 | ||
afedecd3 MM |
376 | /* The to_info_record method of target record-btrace. */ |
377 | ||
378 | static void | |
630d6a4a | 379 | record_btrace_info (struct target_ops *self) |
afedecd3 MM |
380 | { |
381 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 382 | const struct btrace_config *conf; |
afedecd3 | 383 | struct thread_info *tp; |
31fd9caa | 384 | unsigned int insns, calls, gaps; |
afedecd3 MM |
385 | |
386 | DEBUG ("info"); | |
387 | ||
388 | tp = find_thread_ptid (inferior_ptid); | |
389 | if (tp == NULL) | |
390 | error (_("No thread.")); | |
391 | ||
f4abbc16 MM |
392 | btinfo = &tp->btrace; |
393 | ||
394 | conf = btrace_conf (btinfo); | |
395 | if (conf != NULL) | |
d33501a5 | 396 | record_btrace_print_conf (conf); |
f4abbc16 | 397 | |
afedecd3 MM |
398 | btrace_fetch (tp); |
399 | ||
23a7fe75 MM |
400 | insns = 0; |
401 | calls = 0; | |
31fd9caa | 402 | gaps = 0; |
23a7fe75 | 403 | |
6e07b1d2 | 404 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
405 | { |
406 | struct btrace_call_iterator call; | |
407 | struct btrace_insn_iterator insn; | |
408 | ||
409 | btrace_call_end (&call, btinfo); | |
410 | btrace_call_prev (&call, 1); | |
5de9129b | 411 | calls = btrace_call_number (&call); |
23a7fe75 MM |
412 | |
413 | btrace_insn_end (&insn, btinfo); | |
31fd9caa | 414 | |
5de9129b | 415 | insns = btrace_insn_number (&insn); |
31fd9caa MM |
416 | if (insns != 0) |
417 | { | |
418 | /* The last instruction does not really belong to the trace. */ | |
419 | insns -= 1; | |
420 | } | |
421 | else | |
422 | { | |
423 | unsigned int steps; | |
424 | ||
425 | /* Skip gaps at the end. */ | |
426 | do | |
427 | { | |
428 | steps = btrace_insn_prev (&insn, 1); | |
429 | if (steps == 0) | |
430 | break; | |
431 | ||
432 | insns = btrace_insn_number (&insn); | |
433 | } | |
434 | while (insns == 0); | |
435 | } | |
436 | ||
437 | gaps = btinfo->ngaps; | |
23a7fe75 | 438 | } |
afedecd3 | 439 | |
31fd9caa MM |
440 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
441 | "for thread %d (%s).\n"), insns, calls, gaps, | |
442 | tp->num, target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
443 | |
444 | if (btrace_is_replaying (tp)) | |
445 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
446 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
447 | } |
448 | ||
31fd9caa MM |
449 | /* Print a decode error. */ |
450 | ||
451 | static void | |
452 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
453 | enum btrace_format format) | |
454 | { | |
455 | const char *errstr; | |
456 | int is_error; | |
457 | ||
458 | errstr = _("unknown"); | |
459 | is_error = 1; | |
460 | ||
461 | switch (format) | |
462 | { | |
463 | default: | |
464 | break; | |
465 | ||
466 | case BTRACE_FORMAT_BTS: | |
467 | switch (errcode) | |
468 | { | |
469 | default: | |
470 | break; | |
471 | ||
472 | case BDE_BTS_OVERFLOW: | |
473 | errstr = _("instruction overflow"); | |
474 | break; | |
475 | ||
476 | case BDE_BTS_INSN_SIZE: | |
477 | errstr = _("unknown instruction"); | |
478 | break; | |
479 | } | |
480 | break; | |
b20a6524 MM |
481 | |
482 | #if defined (HAVE_LIBIPT) | |
483 | case BTRACE_FORMAT_PT: | |
484 | switch (errcode) | |
485 | { | |
486 | case BDE_PT_USER_QUIT: | |
487 | is_error = 0; | |
488 | errstr = _("trace decode cancelled"); | |
489 | break; | |
490 | ||
491 | case BDE_PT_DISABLED: | |
492 | is_error = 0; | |
493 | errstr = _("disabled"); | |
494 | break; | |
495 | ||
496 | case BDE_PT_OVERFLOW: | |
497 | is_error = 0; | |
498 | errstr = _("overflow"); | |
499 | break; | |
500 | ||
501 | default: | |
502 | if (errcode < 0) | |
503 | errstr = pt_errstr (pt_errcode (errcode)); | |
504 | break; | |
505 | } | |
506 | break; | |
507 | #endif /* defined (HAVE_LIBIPT) */ | |
31fd9caa MM |
508 | } |
509 | ||
510 | ui_out_text (uiout, _("[")); | |
511 | if (is_error) | |
512 | { | |
513 | ui_out_text (uiout, _("decode error (")); | |
514 | ui_out_field_int (uiout, "errcode", errcode); | |
515 | ui_out_text (uiout, _("): ")); | |
516 | } | |
517 | ui_out_text (uiout, errstr); | |
518 | ui_out_text (uiout, _("]\n")); | |
519 | } | |
520 | ||
afedecd3 MM |
521 | /* Print an unsigned int. */ |
522 | ||
523 | static void | |
524 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
525 | { | |
526 | ui_out_field_fmt (uiout, fld, "%u", val); | |
527 | } | |
528 | ||
f94cc897 MM |
529 | /* A range of source lines. */ |
530 | ||
531 | struct btrace_line_range | |
532 | { | |
533 | /* The symtab this line is from. */ | |
534 | struct symtab *symtab; | |
535 | ||
536 | /* The first line (inclusive). */ | |
537 | int begin; | |
538 | ||
539 | /* The last line (exclusive). */ | |
540 | int end; | |
541 | }; | |
542 | ||
543 | /* Construct a line range. */ | |
544 | ||
545 | static struct btrace_line_range | |
546 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
547 | { | |
548 | struct btrace_line_range range; | |
549 | ||
550 | range.symtab = symtab; | |
551 | range.begin = begin; | |
552 | range.end = end; | |
553 | ||
554 | return range; | |
555 | } | |
556 | ||
557 | /* Add a line to a line range. */ | |
558 | ||
559 | static struct btrace_line_range | |
560 | btrace_line_range_add (struct btrace_line_range range, int line) | |
561 | { | |
562 | if (range.end <= range.begin) | |
563 | { | |
564 | /* This is the first entry. */ | |
565 | range.begin = line; | |
566 | range.end = line + 1; | |
567 | } | |
568 | else if (line < range.begin) | |
569 | range.begin = line; | |
570 | else if (range.end < line) | |
571 | range.end = line; | |
572 | ||
573 | return range; | |
574 | } | |
575 | ||
576 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
577 | ||
578 | static int | |
579 | btrace_line_range_is_empty (struct btrace_line_range range) | |
580 | { | |
581 | return range.end <= range.begin; | |
582 | } | |
583 | ||
584 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
585 | ||
586 | static int | |
587 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
588 | struct btrace_line_range rhs) | |
589 | { | |
590 | return ((lhs.symtab == rhs.symtab) | |
591 | && (lhs.begin <= rhs.begin) | |
592 | && (rhs.end <= lhs.end)); | |
593 | } | |
594 | ||
595 | /* Find the line range associated with PC. */ | |
596 | ||
597 | static struct btrace_line_range | |
598 | btrace_find_line_range (CORE_ADDR pc) | |
599 | { | |
600 | struct btrace_line_range range; | |
601 | struct linetable_entry *lines; | |
602 | struct linetable *ltable; | |
603 | struct symtab *symtab; | |
604 | int nlines, i; | |
605 | ||
606 | symtab = find_pc_line_symtab (pc); | |
607 | if (symtab == NULL) | |
608 | return btrace_mk_line_range (NULL, 0, 0); | |
609 | ||
610 | ltable = SYMTAB_LINETABLE (symtab); | |
611 | if (ltable == NULL) | |
612 | return btrace_mk_line_range (symtab, 0, 0); | |
613 | ||
614 | nlines = ltable->nitems; | |
615 | lines = ltable->item; | |
616 | if (nlines <= 0) | |
617 | return btrace_mk_line_range (symtab, 0, 0); | |
618 | ||
619 | range = btrace_mk_line_range (symtab, 0, 0); | |
620 | for (i = 0; i < nlines - 1; i++) | |
621 | { | |
622 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
623 | range = btrace_line_range_add (range, lines[i].line); | |
624 | } | |
625 | ||
626 | return range; | |
627 | } | |
628 | ||
629 | /* Print source lines in LINES to UIOUT. | |
630 | ||
631 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
632 | instructions corresponding to that source line. When printing a new source | |
633 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
634 | the new source line. If the source line range in LINES is not empty, this | |
635 | function will leave the cleanup chain for the last printed source line open | |
636 | so instructions can be added to it. */ | |
637 | ||
638 | static void | |
639 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
640 | struct cleanup **ui_item_chain, int flags) | |
641 | { | |
8d297bbf | 642 | print_source_lines_flags psl_flags; |
f94cc897 MM |
643 | int line; |
644 | ||
645 | psl_flags = 0; | |
646 | if (flags & DISASSEMBLY_FILENAME) | |
647 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
648 | ||
649 | for (line = lines.begin; line < lines.end; ++line) | |
650 | { | |
651 | if (*ui_item_chain != NULL) | |
652 | do_cleanups (*ui_item_chain); | |
653 | ||
654 | *ui_item_chain | |
655 | = make_cleanup_ui_out_tuple_begin_end (uiout, "src_and_asm_line"); | |
656 | ||
657 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
658 | ||
659 | make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
660 | } | |
661 | } | |
662 | ||
afedecd3 MM |
663 | /* Disassemble a section of the recorded instruction trace. */ |
664 | ||
665 | static void | |
23a7fe75 | 666 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 667 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
668 | const struct btrace_insn_iterator *begin, |
669 | const struct btrace_insn_iterator *end, int flags) | |
afedecd3 | 670 | { |
f94cc897 MM |
671 | struct ui_file *stb; |
672 | struct cleanup *cleanups, *ui_item_chain; | |
673 | struct disassemble_info di; | |
afedecd3 | 674 | struct gdbarch *gdbarch; |
23a7fe75 | 675 | struct btrace_insn_iterator it; |
f94cc897 | 676 | struct btrace_line_range last_lines; |
afedecd3 | 677 | |
23a7fe75 MM |
678 | DEBUG ("itrace (0x%x): [%u; %u)", flags, btrace_insn_number (begin), |
679 | btrace_insn_number (end)); | |
afedecd3 | 680 | |
f94cc897 MM |
681 | flags |= DISASSEMBLY_SPECULATIVE; |
682 | ||
afedecd3 | 683 | gdbarch = target_gdbarch (); |
f94cc897 MM |
684 | stb = mem_fileopen (); |
685 | cleanups = make_cleanup_ui_file_delete (stb); | |
686 | di = gdb_disassemble_info (gdbarch, stb); | |
687 | last_lines = btrace_mk_line_range (NULL, 0, 0); | |
688 | ||
689 | make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); | |
690 | ||
691 | /* UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
692 | instructions corresponding to that line. */ | |
693 | ui_item_chain = NULL; | |
afedecd3 | 694 | |
23a7fe75 | 695 | for (it = *begin; btrace_insn_cmp (&it, end) != 0; btrace_insn_next (&it, 1)) |
afedecd3 | 696 | { |
23a7fe75 MM |
697 | const struct btrace_insn *insn; |
698 | ||
699 | insn = btrace_insn_get (&it); | |
700 | ||
31fd9caa MM |
701 | /* A NULL instruction indicates a gap in the trace. */ |
702 | if (insn == NULL) | |
703 | { | |
704 | const struct btrace_config *conf; | |
705 | ||
706 | conf = btrace_conf (btinfo); | |
afedecd3 | 707 | |
31fd9caa MM |
708 | /* We have trace so we must have a configuration. */ |
709 | gdb_assert (conf != NULL); | |
710 | ||
711 | btrace_ui_out_decode_error (uiout, it.function->errcode, | |
712 | conf->format); | |
713 | } | |
714 | else | |
715 | { | |
f94cc897 | 716 | struct disasm_insn dinsn; |
da8c46d2 | 717 | |
f94cc897 | 718 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 719 | { |
f94cc897 MM |
720 | struct btrace_line_range lines; |
721 | ||
722 | lines = btrace_find_line_range (insn->pc); | |
723 | if (!btrace_line_range_is_empty (lines) | |
724 | && !btrace_line_range_contains_range (last_lines, lines)) | |
725 | { | |
726 | btrace_print_lines (lines, uiout, &ui_item_chain, flags); | |
727 | last_lines = lines; | |
728 | } | |
729 | else if (ui_item_chain == NULL) | |
730 | { | |
731 | ui_item_chain | |
732 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
733 | "src_and_asm_line"); | |
734 | /* No source information. */ | |
735 | make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
736 | } | |
737 | ||
738 | gdb_assert (ui_item_chain != NULL); | |
da8c46d2 | 739 | } |
da8c46d2 | 740 | |
f94cc897 MM |
741 | memset (&dinsn, 0, sizeof (dinsn)); |
742 | dinsn.number = btrace_insn_number (&it); | |
743 | dinsn.addr = insn->pc; | |
31fd9caa | 744 | |
da8c46d2 | 745 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 746 | dinsn.is_speculative = 1; |
da8c46d2 | 747 | |
f94cc897 | 748 | gdb_pretty_print_insn (gdbarch, uiout, &di, &dinsn, flags, stb); |
31fd9caa | 749 | } |
afedecd3 | 750 | } |
f94cc897 MM |
751 | |
752 | do_cleanups (cleanups); | |
afedecd3 MM |
753 | } |
754 | ||
755 | /* The to_insn_history method of target record-btrace. */ | |
756 | ||
757 | static void | |
7a6c5609 | 758 | record_btrace_insn_history (struct target_ops *self, int size, int flags) |
afedecd3 MM |
759 | { |
760 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
761 | struct btrace_insn_history *history; |
762 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
763 | struct cleanup *uiout_cleanup; |
764 | struct ui_out *uiout; | |
23a7fe75 | 765 | unsigned int context, covered; |
afedecd3 MM |
766 | |
767 | uiout = current_uiout; | |
768 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
769 | "insn history"); | |
afedecd3 | 770 | context = abs (size); |
afedecd3 MM |
771 | if (context == 0) |
772 | error (_("Bad record instruction-history-size.")); | |
773 | ||
23a7fe75 MM |
774 | btinfo = require_btrace (); |
775 | history = btinfo->insn_history; | |
776 | if (history == NULL) | |
afedecd3 | 777 | { |
07bbe694 | 778 | struct btrace_insn_iterator *replay; |
afedecd3 | 779 | |
23a7fe75 | 780 | DEBUG ("insn-history (0x%x): %d", flags, size); |
afedecd3 | 781 | |
07bbe694 MM |
782 | /* If we're replaying, we start at the replay position. Otherwise, we |
783 | start at the tail of the trace. */ | |
784 | replay = btinfo->replay; | |
785 | if (replay != NULL) | |
786 | begin = *replay; | |
787 | else | |
788 | btrace_insn_end (&begin, btinfo); | |
789 | ||
790 | /* We start from here and expand in the requested direction. Then we | |
791 | expand in the other direction, as well, to fill up any remaining | |
792 | context. */ | |
793 | end = begin; | |
794 | if (size < 0) | |
795 | { | |
796 | /* We want the current position covered, as well. */ | |
797 | covered = btrace_insn_next (&end, 1); | |
798 | covered += btrace_insn_prev (&begin, context - covered); | |
799 | covered += btrace_insn_next (&end, context - covered); | |
800 | } | |
801 | else | |
802 | { | |
803 | covered = btrace_insn_next (&end, context); | |
804 | covered += btrace_insn_prev (&begin, context - covered); | |
805 | } | |
afedecd3 MM |
806 | } |
807 | else | |
808 | { | |
23a7fe75 MM |
809 | begin = history->begin; |
810 | end = history->end; | |
afedecd3 | 811 | |
23a7fe75 MM |
812 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", flags, size, |
813 | btrace_insn_number (&begin), btrace_insn_number (&end)); | |
afedecd3 | 814 | |
23a7fe75 MM |
815 | if (size < 0) |
816 | { | |
817 | end = begin; | |
818 | covered = btrace_insn_prev (&begin, context); | |
819 | } | |
820 | else | |
821 | { | |
822 | begin = end; | |
823 | covered = btrace_insn_next (&end, context); | |
824 | } | |
afedecd3 MM |
825 | } |
826 | ||
23a7fe75 | 827 | if (covered > 0) |
31fd9caa | 828 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
829 | else |
830 | { | |
831 | if (size < 0) | |
832 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
833 | else | |
834 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
835 | } | |
afedecd3 | 836 | |
23a7fe75 | 837 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
838 | do_cleanups (uiout_cleanup); |
839 | } | |
840 | ||
841 | /* The to_insn_history_range method of target record-btrace. */ | |
842 | ||
843 | static void | |
4e99c6b7 TT |
844 | record_btrace_insn_history_range (struct target_ops *self, |
845 | ULONGEST from, ULONGEST to, int flags) | |
afedecd3 MM |
846 | { |
847 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
848 | struct btrace_insn_history *history; |
849 | struct btrace_insn_iterator begin, end; | |
afedecd3 MM |
850 | struct cleanup *uiout_cleanup; |
851 | struct ui_out *uiout; | |
23a7fe75 MM |
852 | unsigned int low, high; |
853 | int found; | |
afedecd3 MM |
854 | |
855 | uiout = current_uiout; | |
856 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
857 | "insn history"); | |
23a7fe75 MM |
858 | low = from; |
859 | high = to; | |
afedecd3 | 860 | |
23a7fe75 | 861 | DEBUG ("insn-history (0x%x): [%u; %u)", flags, low, high); |
afedecd3 MM |
862 | |
863 | /* Check for wrap-arounds. */ | |
23a7fe75 | 864 | if (low != from || high != to) |
afedecd3 MM |
865 | error (_("Bad range.")); |
866 | ||
0688d04e | 867 | if (high < low) |
afedecd3 MM |
868 | error (_("Bad range.")); |
869 | ||
23a7fe75 | 870 | btinfo = require_btrace (); |
afedecd3 | 871 | |
23a7fe75 MM |
872 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
873 | if (found == 0) | |
874 | error (_("Range out of bounds.")); | |
afedecd3 | 875 | |
23a7fe75 MM |
876 | found = btrace_find_insn_by_number (&end, btinfo, high); |
877 | if (found == 0) | |
0688d04e MM |
878 | { |
879 | /* Silently truncate the range. */ | |
880 | btrace_insn_end (&end, btinfo); | |
881 | } | |
882 | else | |
883 | { | |
884 | /* We want both begin and end to be inclusive. */ | |
885 | btrace_insn_next (&end, 1); | |
886 | } | |
afedecd3 | 887 | |
31fd9caa | 888 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 889 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
890 | |
891 | do_cleanups (uiout_cleanup); | |
892 | } | |
893 | ||
894 | /* The to_insn_history_from method of target record-btrace. */ | |
895 | ||
896 | static void | |
9abc3ff3 TT |
897 | record_btrace_insn_history_from (struct target_ops *self, |
898 | ULONGEST from, int size, int flags) | |
afedecd3 MM |
899 | { |
900 | ULONGEST begin, end, context; | |
901 | ||
902 | context = abs (size); | |
0688d04e MM |
903 | if (context == 0) |
904 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
905 | |
906 | if (size < 0) | |
907 | { | |
908 | end = from; | |
909 | ||
910 | if (from < context) | |
911 | begin = 0; | |
912 | else | |
0688d04e | 913 | begin = from - context + 1; |
afedecd3 MM |
914 | } |
915 | else | |
916 | { | |
917 | begin = from; | |
0688d04e | 918 | end = from + context - 1; |
afedecd3 MM |
919 | |
920 | /* Check for wrap-around. */ | |
921 | if (end < begin) | |
922 | end = ULONGEST_MAX; | |
923 | } | |
924 | ||
4e99c6b7 | 925 | record_btrace_insn_history_range (self, begin, end, flags); |
afedecd3 MM |
926 | } |
927 | ||
928 | /* Print the instruction number range for a function call history line. */ | |
929 | ||
930 | static void | |
23a7fe75 MM |
931 | btrace_call_history_insn_range (struct ui_out *uiout, |
932 | const struct btrace_function *bfun) | |
afedecd3 | 933 | { |
7acbe133 MM |
934 | unsigned int begin, end, size; |
935 | ||
936 | size = VEC_length (btrace_insn_s, bfun->insn); | |
937 | gdb_assert (size > 0); | |
afedecd3 | 938 | |
23a7fe75 | 939 | begin = bfun->insn_offset; |
7acbe133 | 940 | end = begin + size - 1; |
afedecd3 | 941 | |
23a7fe75 | 942 | ui_out_field_uint (uiout, "insn begin", begin); |
8710b709 | 943 | ui_out_text (uiout, ","); |
23a7fe75 | 944 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
945 | } |
946 | ||
ce0dfbea MM |
947 | /* Compute the lowest and highest source line for the instructions in BFUN |
948 | and return them in PBEGIN and PEND. | |
949 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
950 | result from inlining or macro expansion. */ | |
951 | ||
952 | static void | |
953 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
954 | int *pbegin, int *pend) | |
955 | { | |
956 | struct btrace_insn *insn; | |
957 | struct symtab *symtab; | |
958 | struct symbol *sym; | |
959 | unsigned int idx; | |
960 | int begin, end; | |
961 | ||
962 | begin = INT_MAX; | |
963 | end = INT_MIN; | |
964 | ||
965 | sym = bfun->sym; | |
966 | if (sym == NULL) | |
967 | goto out; | |
968 | ||
969 | symtab = symbol_symtab (sym); | |
970 | ||
971 | for (idx = 0; VEC_iterate (btrace_insn_s, bfun->insn, idx, insn); ++idx) | |
972 | { | |
973 | struct symtab_and_line sal; | |
974 | ||
975 | sal = find_pc_line (insn->pc, 0); | |
976 | if (sal.symtab != symtab || sal.line == 0) | |
977 | continue; | |
978 | ||
979 | begin = min (begin, sal.line); | |
980 | end = max (end, sal.line); | |
981 | } | |
982 | ||
983 | out: | |
984 | *pbegin = begin; | |
985 | *pend = end; | |
986 | } | |
987 | ||
afedecd3 MM |
988 | /* Print the source line information for a function call history line. */ |
989 | ||
990 | static void | |
23a7fe75 MM |
991 | btrace_call_history_src_line (struct ui_out *uiout, |
992 | const struct btrace_function *bfun) | |
afedecd3 MM |
993 | { |
994 | struct symbol *sym; | |
23a7fe75 | 995 | int begin, end; |
afedecd3 MM |
996 | |
997 | sym = bfun->sym; | |
998 | if (sym == NULL) | |
999 | return; | |
1000 | ||
1001 | ui_out_field_string (uiout, "file", | |
08be3fe3 | 1002 | symtab_to_filename_for_display (symbol_symtab (sym))); |
afedecd3 | 1003 | |
ce0dfbea | 1004 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1005 | if (end < begin) |
afedecd3 MM |
1006 | return; |
1007 | ||
1008 | ui_out_text (uiout, ":"); | |
23a7fe75 | 1009 | ui_out_field_int (uiout, "min line", begin); |
afedecd3 | 1010 | |
23a7fe75 | 1011 | if (end == begin) |
afedecd3 MM |
1012 | return; |
1013 | ||
8710b709 | 1014 | ui_out_text (uiout, ","); |
23a7fe75 | 1015 | ui_out_field_int (uiout, "max line", end); |
afedecd3 MM |
1016 | } |
1017 | ||
0b722aec MM |
1018 | /* Get the name of a branch trace function. */ |
1019 | ||
1020 | static const char * | |
1021 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1022 | { | |
1023 | struct minimal_symbol *msym; | |
1024 | struct symbol *sym; | |
1025 | ||
1026 | if (bfun == NULL) | |
1027 | return "??"; | |
1028 | ||
1029 | msym = bfun->msym; | |
1030 | sym = bfun->sym; | |
1031 | ||
1032 | if (sym != NULL) | |
1033 | return SYMBOL_PRINT_NAME (sym); | |
1034 | else if (msym != NULL) | |
efd66ac6 | 1035 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1036 | else |
1037 | return "??"; | |
1038 | } | |
1039 | ||
afedecd3 MM |
1040 | /* Disassemble a section of the recorded function trace. */ |
1041 | ||
1042 | static void | |
23a7fe75 | 1043 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1044 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1045 | const struct btrace_call_iterator *begin, |
1046 | const struct btrace_call_iterator *end, | |
8d297bbf | 1047 | int int_flags) |
afedecd3 | 1048 | { |
23a7fe75 | 1049 | struct btrace_call_iterator it; |
8d297bbf | 1050 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1051 | |
8d297bbf | 1052 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1053 | btrace_call_number (end)); |
afedecd3 | 1054 | |
23a7fe75 | 1055 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1056 | { |
23a7fe75 MM |
1057 | const struct btrace_function *bfun; |
1058 | struct minimal_symbol *msym; | |
1059 | struct symbol *sym; | |
1060 | ||
1061 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1062 | sym = bfun->sym; |
0b722aec | 1063 | msym = bfun->msym; |
23a7fe75 | 1064 | |
afedecd3 | 1065 | /* Print the function index. */ |
23a7fe75 | 1066 | ui_out_field_uint (uiout, "index", bfun->number); |
afedecd3 MM |
1067 | ui_out_text (uiout, "\t"); |
1068 | ||
31fd9caa MM |
1069 | /* Indicate gaps in the trace. */ |
1070 | if (bfun->errcode != 0) | |
1071 | { | |
1072 | const struct btrace_config *conf; | |
1073 | ||
1074 | conf = btrace_conf (btinfo); | |
1075 | ||
1076 | /* We have trace so we must have a configuration. */ | |
1077 | gdb_assert (conf != NULL); | |
1078 | ||
1079 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1080 | ||
1081 | continue; | |
1082 | } | |
1083 | ||
8710b709 MM |
1084 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1085 | { | |
1086 | int level = bfun->level + btinfo->level, i; | |
1087 | ||
1088 | for (i = 0; i < level; ++i) | |
1089 | ui_out_text (uiout, " "); | |
1090 | } | |
1091 | ||
1092 | if (sym != NULL) | |
1093 | ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (sym)); | |
1094 | else if (msym != NULL) | |
efd66ac6 | 1095 | ui_out_field_string (uiout, "function", MSYMBOL_PRINT_NAME (msym)); |
8710b709 MM |
1096 | else if (!ui_out_is_mi_like_p (uiout)) |
1097 | ui_out_field_string (uiout, "function", "??"); | |
1098 | ||
1e038f67 | 1099 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1100 | { |
8710b709 | 1101 | ui_out_text (uiout, _("\tinst ")); |
23a7fe75 | 1102 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1103 | } |
1104 | ||
1e038f67 | 1105 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1106 | { |
8710b709 | 1107 | ui_out_text (uiout, _("\tat ")); |
23a7fe75 | 1108 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1109 | } |
1110 | ||
afedecd3 MM |
1111 | ui_out_text (uiout, "\n"); |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* The to_call_history method of target record-btrace. */ | |
1116 | ||
1117 | static void | |
8d297bbf | 1118 | record_btrace_call_history (struct target_ops *self, int size, int int_flags) |
afedecd3 MM |
1119 | { |
1120 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1121 | struct btrace_call_history *history; |
1122 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
1123 | struct cleanup *uiout_cleanup; |
1124 | struct ui_out *uiout; | |
23a7fe75 | 1125 | unsigned int context, covered; |
8d297bbf | 1126 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1127 | |
1128 | uiout = current_uiout; | |
1129 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
1130 | "insn history"); | |
afedecd3 | 1131 | context = abs (size); |
afedecd3 MM |
1132 | if (context == 0) |
1133 | error (_("Bad record function-call-history-size.")); | |
1134 | ||
23a7fe75 MM |
1135 | btinfo = require_btrace (); |
1136 | history = btinfo->call_history; | |
1137 | if (history == NULL) | |
afedecd3 | 1138 | { |
07bbe694 | 1139 | struct btrace_insn_iterator *replay; |
afedecd3 | 1140 | |
8d297bbf | 1141 | DEBUG ("call-history (0x%x): %d", int_flags, size); |
afedecd3 | 1142 | |
07bbe694 MM |
1143 | /* If we're replaying, we start at the replay position. Otherwise, we |
1144 | start at the tail of the trace. */ | |
1145 | replay = btinfo->replay; | |
1146 | if (replay != NULL) | |
1147 | { | |
1148 | begin.function = replay->function; | |
1149 | begin.btinfo = btinfo; | |
1150 | } | |
1151 | else | |
1152 | btrace_call_end (&begin, btinfo); | |
1153 | ||
1154 | /* We start from here and expand in the requested direction. Then we | |
1155 | expand in the other direction, as well, to fill up any remaining | |
1156 | context. */ | |
1157 | end = begin; | |
1158 | if (size < 0) | |
1159 | { | |
1160 | /* We want the current position covered, as well. */ | |
1161 | covered = btrace_call_next (&end, 1); | |
1162 | covered += btrace_call_prev (&begin, context - covered); | |
1163 | covered += btrace_call_next (&end, context - covered); | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | covered = btrace_call_next (&end, context); | |
1168 | covered += btrace_call_prev (&begin, context- covered); | |
1169 | } | |
afedecd3 MM |
1170 | } |
1171 | else | |
1172 | { | |
23a7fe75 MM |
1173 | begin = history->begin; |
1174 | end = history->end; | |
afedecd3 | 1175 | |
8d297bbf | 1176 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", int_flags, size, |
23a7fe75 | 1177 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1178 | |
23a7fe75 MM |
1179 | if (size < 0) |
1180 | { | |
1181 | end = begin; | |
1182 | covered = btrace_call_prev (&begin, context); | |
1183 | } | |
1184 | else | |
1185 | { | |
1186 | begin = end; | |
1187 | covered = btrace_call_next (&end, context); | |
1188 | } | |
afedecd3 MM |
1189 | } |
1190 | ||
23a7fe75 | 1191 | if (covered > 0) |
8710b709 | 1192 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1193 | else |
1194 | { | |
1195 | if (size < 0) | |
1196 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1197 | else | |
1198 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1199 | } | |
afedecd3 | 1200 | |
23a7fe75 | 1201 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1202 | do_cleanups (uiout_cleanup); |
1203 | } | |
1204 | ||
1205 | /* The to_call_history_range method of target record-btrace. */ | |
1206 | ||
1207 | static void | |
f0d960ea | 1208 | record_btrace_call_history_range (struct target_ops *self, |
8d297bbf PA |
1209 | ULONGEST from, ULONGEST to, |
1210 | int int_flags) | |
afedecd3 MM |
1211 | { |
1212 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1213 | struct btrace_call_history *history; |
1214 | struct btrace_call_iterator begin, end; | |
afedecd3 MM |
1215 | struct cleanup *uiout_cleanup; |
1216 | struct ui_out *uiout; | |
23a7fe75 MM |
1217 | unsigned int low, high; |
1218 | int found; | |
8d297bbf | 1219 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1220 | |
1221 | uiout = current_uiout; | |
1222 | uiout_cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, | |
1223 | "func history"); | |
23a7fe75 MM |
1224 | low = from; |
1225 | high = to; | |
afedecd3 | 1226 | |
8d297bbf | 1227 | DEBUG ("call-history (0x%x): [%u; %u)", int_flags, low, high); |
afedecd3 MM |
1228 | |
1229 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1230 | if (low != from || high != to) |
afedecd3 MM |
1231 | error (_("Bad range.")); |
1232 | ||
0688d04e | 1233 | if (high < low) |
afedecd3 MM |
1234 | error (_("Bad range.")); |
1235 | ||
23a7fe75 | 1236 | btinfo = require_btrace (); |
afedecd3 | 1237 | |
23a7fe75 MM |
1238 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1239 | if (found == 0) | |
1240 | error (_("Range out of bounds.")); | |
afedecd3 | 1241 | |
23a7fe75 MM |
1242 | found = btrace_find_call_by_number (&end, btinfo, high); |
1243 | if (found == 0) | |
0688d04e MM |
1244 | { |
1245 | /* Silently truncate the range. */ | |
1246 | btrace_call_end (&end, btinfo); | |
1247 | } | |
1248 | else | |
1249 | { | |
1250 | /* We want both begin and end to be inclusive. */ | |
1251 | btrace_call_next (&end, 1); | |
1252 | } | |
afedecd3 | 1253 | |
8710b709 | 1254 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1255 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1256 | |
1257 | do_cleanups (uiout_cleanup); | |
1258 | } | |
1259 | ||
1260 | /* The to_call_history_from method of target record-btrace. */ | |
1261 | ||
1262 | static void | |
ec0aea04 | 1263 | record_btrace_call_history_from (struct target_ops *self, |
8d297bbf PA |
1264 | ULONGEST from, int size, |
1265 | int int_flags) | |
afedecd3 MM |
1266 | { |
1267 | ULONGEST begin, end, context; | |
8d297bbf | 1268 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 MM |
1269 | |
1270 | context = abs (size); | |
0688d04e MM |
1271 | if (context == 0) |
1272 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1273 | |
1274 | if (size < 0) | |
1275 | { | |
1276 | end = from; | |
1277 | ||
1278 | if (from < context) | |
1279 | begin = 0; | |
1280 | else | |
0688d04e | 1281 | begin = from - context + 1; |
afedecd3 MM |
1282 | } |
1283 | else | |
1284 | { | |
1285 | begin = from; | |
0688d04e | 1286 | end = from + context - 1; |
afedecd3 MM |
1287 | |
1288 | /* Check for wrap-around. */ | |
1289 | if (end < begin) | |
1290 | end = ULONGEST_MAX; | |
1291 | } | |
1292 | ||
f0d960ea | 1293 | record_btrace_call_history_range (self, begin, end, flags); |
afedecd3 MM |
1294 | } |
1295 | ||
07bbe694 MM |
1296 | /* The to_record_is_replaying method of target record-btrace. */ |
1297 | ||
1298 | static int | |
a52eab48 | 1299 | record_btrace_is_replaying (struct target_ops *self, ptid_t ptid) |
07bbe694 MM |
1300 | { |
1301 | struct thread_info *tp; | |
1302 | ||
034f788c | 1303 | ALL_NON_EXITED_THREADS (tp) |
a52eab48 | 1304 | if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) |
07bbe694 MM |
1305 | return 1; |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
7ff27e9b MM |
1310 | /* The to_record_will_replay method of target record-btrace. */ |
1311 | ||
1312 | static int | |
1313 | record_btrace_will_replay (struct target_ops *self, ptid_t ptid, int dir) | |
1314 | { | |
1315 | return dir == EXEC_REVERSE || record_btrace_is_replaying (self, ptid); | |
1316 | } | |
1317 | ||
633785ff MM |
1318 | /* The to_xfer_partial method of target record-btrace. */ |
1319 | ||
9b409511 | 1320 | static enum target_xfer_status |
633785ff MM |
1321 | record_btrace_xfer_partial (struct target_ops *ops, enum target_object object, |
1322 | const char *annex, gdb_byte *readbuf, | |
1323 | const gdb_byte *writebuf, ULONGEST offset, | |
9b409511 | 1324 | ULONGEST len, ULONGEST *xfered_len) |
633785ff MM |
1325 | { |
1326 | struct target_ops *t; | |
1327 | ||
1328 | /* Filter out requests that don't make sense during replay. */ | |
67b5c0c1 | 1329 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1330 | && !record_btrace_generating_corefile |
4d10e986 | 1331 | && record_btrace_is_replaying (ops, inferior_ptid)) |
633785ff MM |
1332 | { |
1333 | switch (object) | |
1334 | { | |
1335 | case TARGET_OBJECT_MEMORY: | |
1336 | { | |
1337 | struct target_section *section; | |
1338 | ||
1339 | /* We do not allow writing memory in general. */ | |
1340 | if (writebuf != NULL) | |
9b409511 YQ |
1341 | { |
1342 | *xfered_len = len; | |
bc113b4e | 1343 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1344 | } |
633785ff MM |
1345 | |
1346 | /* We allow reading readonly memory. */ | |
1347 | section = target_section_by_addr (ops, offset); | |
1348 | if (section != NULL) | |
1349 | { | |
1350 | /* Check if the section we found is readonly. */ | |
1351 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1352 | section->the_bfd_section) | |
1353 | & SEC_READONLY) != 0) | |
1354 | { | |
1355 | /* Truncate the request to fit into this section. */ | |
1356 | len = min (len, section->endaddr - offset); | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | ||
9b409511 | 1361 | *xfered_len = len; |
bc113b4e | 1362 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1363 | } |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* Forward the request. */ | |
e75fdfca TT |
1368 | ops = ops->beneath; |
1369 | return ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, | |
1370 | offset, len, xfered_len); | |
633785ff MM |
1371 | } |
1372 | ||
1373 | /* The to_insert_breakpoint method of target record-btrace. */ | |
1374 | ||
1375 | static int | |
1376 | record_btrace_insert_breakpoint (struct target_ops *ops, | |
1377 | struct gdbarch *gdbarch, | |
1378 | struct bp_target_info *bp_tgt) | |
1379 | { | |
67b5c0c1 MM |
1380 | const char *old; |
1381 | int ret; | |
633785ff MM |
1382 | |
1383 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1384 | duration of this function. */ | |
67b5c0c1 MM |
1385 | old = replay_memory_access; |
1386 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1387 | |
1388 | ret = 0; | |
492d29ea PA |
1389 | TRY |
1390 | { | |
1391 | ret = ops->beneath->to_insert_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
1392 | } | |
492d29ea PA |
1393 | CATCH (except, RETURN_MASK_ALL) |
1394 | { | |
6c63c96a | 1395 | replay_memory_access = old; |
492d29ea PA |
1396 | throw_exception (except); |
1397 | } | |
1398 | END_CATCH | |
6c63c96a | 1399 | replay_memory_access = old; |
633785ff MM |
1400 | |
1401 | return ret; | |
1402 | } | |
1403 | ||
1404 | /* The to_remove_breakpoint method of target record-btrace. */ | |
1405 | ||
1406 | static int | |
1407 | record_btrace_remove_breakpoint (struct target_ops *ops, | |
1408 | struct gdbarch *gdbarch, | |
1409 | struct bp_target_info *bp_tgt) | |
1410 | { | |
67b5c0c1 MM |
1411 | const char *old; |
1412 | int ret; | |
633785ff MM |
1413 | |
1414 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1415 | duration of this function. */ | |
67b5c0c1 MM |
1416 | old = replay_memory_access; |
1417 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1418 | |
1419 | ret = 0; | |
492d29ea PA |
1420 | TRY |
1421 | { | |
1422 | ret = ops->beneath->to_remove_breakpoint (ops->beneath, gdbarch, bp_tgt); | |
1423 | } | |
492d29ea PA |
1424 | CATCH (except, RETURN_MASK_ALL) |
1425 | { | |
6c63c96a | 1426 | replay_memory_access = old; |
492d29ea PA |
1427 | throw_exception (except); |
1428 | } | |
1429 | END_CATCH | |
6c63c96a | 1430 | replay_memory_access = old; |
633785ff MM |
1431 | |
1432 | return ret; | |
1433 | } | |
1434 | ||
1f3ef581 MM |
1435 | /* The to_fetch_registers method of target record-btrace. */ |
1436 | ||
1437 | static void | |
1438 | record_btrace_fetch_registers (struct target_ops *ops, | |
1439 | struct regcache *regcache, int regno) | |
1440 | { | |
1441 | struct btrace_insn_iterator *replay; | |
1442 | struct thread_info *tp; | |
1443 | ||
1444 | tp = find_thread_ptid (inferior_ptid); | |
1445 | gdb_assert (tp != NULL); | |
1446 | ||
1447 | replay = tp->btrace.replay; | |
aef92902 | 1448 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1449 | { |
1450 | const struct btrace_insn *insn; | |
1451 | struct gdbarch *gdbarch; | |
1452 | int pcreg; | |
1453 | ||
1454 | gdbarch = get_regcache_arch (regcache); | |
1455 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1456 | if (pcreg < 0) | |
1457 | return; | |
1458 | ||
1459 | /* We can only provide the PC register. */ | |
1460 | if (regno >= 0 && regno != pcreg) | |
1461 | return; | |
1462 | ||
1463 | insn = btrace_insn_get (replay); | |
1464 | gdb_assert (insn != NULL); | |
1465 | ||
1466 | regcache_raw_supply (regcache, regno, &insn->pc); | |
1467 | } | |
1468 | else | |
1469 | { | |
e75fdfca | 1470 | struct target_ops *t = ops->beneath; |
1f3ef581 | 1471 | |
e75fdfca | 1472 | t->to_fetch_registers (t, regcache, regno); |
1f3ef581 MM |
1473 | } |
1474 | } | |
1475 | ||
1476 | /* The to_store_registers method of target record-btrace. */ | |
1477 | ||
1478 | static void | |
1479 | record_btrace_store_registers (struct target_ops *ops, | |
1480 | struct regcache *regcache, int regno) | |
1481 | { | |
1482 | struct target_ops *t; | |
1483 | ||
a52eab48 | 1484 | if (!record_btrace_generating_corefile |
4d10e986 MM |
1485 | && record_btrace_is_replaying (ops, inferior_ptid)) |
1486 | error (_("Cannot write registers while replaying.")); | |
1f3ef581 MM |
1487 | |
1488 | gdb_assert (may_write_registers != 0); | |
1489 | ||
e75fdfca TT |
1490 | t = ops->beneath; |
1491 | t->to_store_registers (t, regcache, regno); | |
1f3ef581 MM |
1492 | } |
1493 | ||
1494 | /* The to_prepare_to_store method of target record-btrace. */ | |
1495 | ||
1496 | static void | |
1497 | record_btrace_prepare_to_store (struct target_ops *ops, | |
1498 | struct regcache *regcache) | |
1499 | { | |
1500 | struct target_ops *t; | |
1501 | ||
a52eab48 | 1502 | if (!record_btrace_generating_corefile |
4d10e986 | 1503 | && record_btrace_is_replaying (ops, inferior_ptid)) |
1f3ef581 MM |
1504 | return; |
1505 | ||
e75fdfca TT |
1506 | t = ops->beneath; |
1507 | t->to_prepare_to_store (t, regcache); | |
1f3ef581 MM |
1508 | } |
1509 | ||
0b722aec MM |
1510 | /* The branch trace frame cache. */ |
1511 | ||
1512 | struct btrace_frame_cache | |
1513 | { | |
1514 | /* The thread. */ | |
1515 | struct thread_info *tp; | |
1516 | ||
1517 | /* The frame info. */ | |
1518 | struct frame_info *frame; | |
1519 | ||
1520 | /* The branch trace function segment. */ | |
1521 | const struct btrace_function *bfun; | |
1522 | }; | |
1523 | ||
1524 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1525 | ||
1526 | static htab_t bfcache; | |
1527 | ||
1528 | /* hash_f for htab_create_alloc of bfcache. */ | |
1529 | ||
1530 | static hashval_t | |
1531 | bfcache_hash (const void *arg) | |
1532 | { | |
19ba03f4 SM |
1533 | const struct btrace_frame_cache *cache |
1534 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1535 | |
1536 | return htab_hash_pointer (cache->frame); | |
1537 | } | |
1538 | ||
1539 | /* eq_f for htab_create_alloc of bfcache. */ | |
1540 | ||
1541 | static int | |
1542 | bfcache_eq (const void *arg1, const void *arg2) | |
1543 | { | |
19ba03f4 SM |
1544 | const struct btrace_frame_cache *cache1 |
1545 | = (const struct btrace_frame_cache *) arg1; | |
1546 | const struct btrace_frame_cache *cache2 | |
1547 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1548 | |
1549 | return cache1->frame == cache2->frame; | |
1550 | } | |
1551 | ||
1552 | /* Create a new btrace frame cache. */ | |
1553 | ||
1554 | static struct btrace_frame_cache * | |
1555 | bfcache_new (struct frame_info *frame) | |
1556 | { | |
1557 | struct btrace_frame_cache *cache; | |
1558 | void **slot; | |
1559 | ||
1560 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1561 | cache->frame = frame; | |
1562 | ||
1563 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1564 | gdb_assert (*slot == NULL); | |
1565 | *slot = cache; | |
1566 | ||
1567 | return cache; | |
1568 | } | |
1569 | ||
1570 | /* Extract the branch trace function from a branch trace frame. */ | |
1571 | ||
1572 | static const struct btrace_function * | |
1573 | btrace_get_frame_function (struct frame_info *frame) | |
1574 | { | |
1575 | const struct btrace_frame_cache *cache; | |
1576 | const struct btrace_function *bfun; | |
1577 | struct btrace_frame_cache pattern; | |
1578 | void **slot; | |
1579 | ||
1580 | pattern.frame = frame; | |
1581 | ||
1582 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1583 | if (slot == NULL) | |
1584 | return NULL; | |
1585 | ||
19ba03f4 | 1586 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1587 | return cache->bfun; |
1588 | } | |
1589 | ||
cecac1ab MM |
1590 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1591 | ||
1592 | static enum unwind_stop_reason | |
1593 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1594 | void **this_cache) | |
1595 | { | |
0b722aec MM |
1596 | const struct btrace_frame_cache *cache; |
1597 | const struct btrace_function *bfun; | |
1598 | ||
19ba03f4 | 1599 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1600 | bfun = cache->bfun; |
1601 | gdb_assert (bfun != NULL); | |
1602 | ||
1603 | if (bfun->up == NULL) | |
1604 | return UNWIND_UNAVAILABLE; | |
1605 | ||
1606 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1607 | } |
1608 | ||
1609 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1610 | ||
1611 | static void | |
1612 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1613 | struct frame_id *this_id) | |
1614 | { | |
0b722aec MM |
1615 | const struct btrace_frame_cache *cache; |
1616 | const struct btrace_function *bfun; | |
1617 | CORE_ADDR code, special; | |
1618 | ||
19ba03f4 | 1619 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1620 | |
1621 | bfun = cache->bfun; | |
1622 | gdb_assert (bfun != NULL); | |
1623 | ||
1624 | while (bfun->segment.prev != NULL) | |
1625 | bfun = bfun->segment.prev; | |
1626 | ||
1627 | code = get_frame_func (this_frame); | |
1628 | special = bfun->number; | |
1629 | ||
1630 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1631 | ||
1632 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1633 | btrace_get_bfun_name (cache->bfun), | |
1634 | core_addr_to_string_nz (this_id->code_addr), | |
1635 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1636 | } |
1637 | ||
1638 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1639 | ||
1640 | static struct value * | |
1641 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1642 | void **this_cache, | |
1643 | int regnum) | |
1644 | { | |
0b722aec MM |
1645 | const struct btrace_frame_cache *cache; |
1646 | const struct btrace_function *bfun, *caller; | |
1647 | const struct btrace_insn *insn; | |
1648 | struct gdbarch *gdbarch; | |
1649 | CORE_ADDR pc; | |
1650 | int pcreg; | |
1651 | ||
1652 | gdbarch = get_frame_arch (this_frame); | |
1653 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1654 | if (pcreg < 0 || regnum != pcreg) | |
1655 | throw_error (NOT_AVAILABLE_ERROR, | |
1656 | _("Registers are not available in btrace record history")); | |
1657 | ||
19ba03f4 | 1658 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1659 | bfun = cache->bfun; |
1660 | gdb_assert (bfun != NULL); | |
1661 | ||
1662 | caller = bfun->up; | |
1663 | if (caller == NULL) | |
1664 | throw_error (NOT_AVAILABLE_ERROR, | |
1665 | _("No caller in btrace record history")); | |
1666 | ||
1667 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) | |
1668 | { | |
1669 | insn = VEC_index (btrace_insn_s, caller->insn, 0); | |
1670 | pc = insn->pc; | |
1671 | } | |
1672 | else | |
1673 | { | |
1674 | insn = VEC_last (btrace_insn_s, caller->insn); | |
1675 | pc = insn->pc; | |
1676 | ||
1677 | pc += gdb_insn_length (gdbarch, pc); | |
1678 | } | |
1679 | ||
1680 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1681 | btrace_get_bfun_name (bfun), bfun->level, | |
1682 | core_addr_to_string_nz (pc)); | |
1683 | ||
1684 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1685 | } |
1686 | ||
1687 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1688 | ||
1689 | static int | |
1690 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1691 | struct frame_info *this_frame, | |
1692 | void **this_cache) | |
1693 | { | |
0b722aec MM |
1694 | const struct btrace_function *bfun; |
1695 | struct btrace_frame_cache *cache; | |
cecac1ab | 1696 | struct thread_info *tp; |
0b722aec | 1697 | struct frame_info *next; |
cecac1ab MM |
1698 | |
1699 | /* THIS_FRAME does not contain a reference to its thread. */ | |
1700 | tp = find_thread_ptid (inferior_ptid); | |
1701 | gdb_assert (tp != NULL); | |
1702 | ||
0b722aec MM |
1703 | bfun = NULL; |
1704 | next = get_next_frame (this_frame); | |
1705 | if (next == NULL) | |
1706 | { | |
1707 | const struct btrace_insn_iterator *replay; | |
1708 | ||
1709 | replay = tp->btrace.replay; | |
1710 | if (replay != NULL) | |
1711 | bfun = replay->function; | |
1712 | } | |
1713 | else | |
1714 | { | |
1715 | const struct btrace_function *callee; | |
1716 | ||
1717 | callee = btrace_get_frame_function (next); | |
1718 | if (callee != NULL && (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1719 | bfun = callee->up; | |
1720 | } | |
1721 | ||
1722 | if (bfun == NULL) | |
1723 | return 0; | |
1724 | ||
1725 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1726 | btrace_get_bfun_name (bfun), bfun->level); | |
1727 | ||
1728 | /* This is our frame. Initialize the frame cache. */ | |
1729 | cache = bfcache_new (this_frame); | |
1730 | cache->tp = tp; | |
1731 | cache->bfun = bfun; | |
1732 | ||
1733 | *this_cache = cache; | |
1734 | return 1; | |
1735 | } | |
1736 | ||
1737 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1738 | ||
1739 | static int | |
1740 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1741 | struct frame_info *this_frame, | |
1742 | void **this_cache) | |
1743 | { | |
1744 | const struct btrace_function *bfun, *callee; | |
1745 | struct btrace_frame_cache *cache; | |
1746 | struct frame_info *next; | |
1747 | ||
1748 | next = get_next_frame (this_frame); | |
1749 | if (next == NULL) | |
1750 | return 0; | |
1751 | ||
1752 | callee = btrace_get_frame_function (next); | |
1753 | if (callee == NULL) | |
1754 | return 0; | |
1755 | ||
1756 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1757 | return 0; | |
1758 | ||
1759 | bfun = callee->up; | |
1760 | if (bfun == NULL) | |
1761 | return 0; | |
1762 | ||
1763 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", | |
1764 | btrace_get_bfun_name (bfun), bfun->level); | |
1765 | ||
1766 | /* This is our frame. Initialize the frame cache. */ | |
1767 | cache = bfcache_new (this_frame); | |
1768 | cache->tp = find_thread_ptid (inferior_ptid); | |
1769 | cache->bfun = bfun; | |
1770 | ||
1771 | *this_cache = cache; | |
1772 | return 1; | |
1773 | } | |
1774 | ||
1775 | static void | |
1776 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1777 | { | |
1778 | struct btrace_frame_cache *cache; | |
1779 | void **slot; | |
1780 | ||
19ba03f4 | 1781 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1782 | |
1783 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1784 | gdb_assert (slot != NULL); | |
1785 | ||
1786 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1787 | } |
1788 | ||
1789 | /* btrace recording does not store previous memory content, neither the stack | |
1790 | frames content. Any unwinding would return errorneous results as the stack | |
1791 | contents no longer matches the changed PC value restored from history. | |
1792 | Therefore this unwinder reports any possibly unwound registers as | |
1793 | <unavailable>. */ | |
1794 | ||
0b722aec | 1795 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1796 | { |
1797 | NORMAL_FRAME, | |
1798 | record_btrace_frame_unwind_stop_reason, | |
1799 | record_btrace_frame_this_id, | |
1800 | record_btrace_frame_prev_register, | |
1801 | NULL, | |
0b722aec MM |
1802 | record_btrace_frame_sniffer, |
1803 | record_btrace_frame_dealloc_cache | |
1804 | }; | |
1805 | ||
1806 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1807 | { | |
1808 | TAILCALL_FRAME, | |
1809 | record_btrace_frame_unwind_stop_reason, | |
1810 | record_btrace_frame_this_id, | |
1811 | record_btrace_frame_prev_register, | |
1812 | NULL, | |
1813 | record_btrace_tailcall_frame_sniffer, | |
1814 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1815 | }; |
b2f4cfde | 1816 | |
ac01945b TT |
1817 | /* Implement the to_get_unwinder method. */ |
1818 | ||
1819 | static const struct frame_unwind * | |
1820 | record_btrace_to_get_unwinder (struct target_ops *self) | |
1821 | { | |
1822 | return &record_btrace_frame_unwind; | |
1823 | } | |
1824 | ||
1825 | /* Implement the to_get_tailcall_unwinder method. */ | |
1826 | ||
1827 | static const struct frame_unwind * | |
1828 | record_btrace_to_get_tailcall_unwinder (struct target_ops *self) | |
1829 | { | |
1830 | return &record_btrace_tailcall_frame_unwind; | |
1831 | } | |
1832 | ||
987e68b1 MM |
1833 | /* Return a human-readable string for FLAG. */ |
1834 | ||
1835 | static const char * | |
1836 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1837 | { | |
1838 | switch (flag) | |
1839 | { | |
1840 | case BTHR_STEP: | |
1841 | return "step"; | |
1842 | ||
1843 | case BTHR_RSTEP: | |
1844 | return "reverse-step"; | |
1845 | ||
1846 | case BTHR_CONT: | |
1847 | return "cont"; | |
1848 | ||
1849 | case BTHR_RCONT: | |
1850 | return "reverse-cont"; | |
1851 | ||
1852 | case BTHR_STOP: | |
1853 | return "stop"; | |
1854 | } | |
1855 | ||
1856 | return "<invalid>"; | |
1857 | } | |
1858 | ||
52834460 MM |
1859 | /* Indicate that TP should be resumed according to FLAG. */ |
1860 | ||
1861 | static void | |
1862 | record_btrace_resume_thread (struct thread_info *tp, | |
1863 | enum btrace_thread_flag flag) | |
1864 | { | |
1865 | struct btrace_thread_info *btinfo; | |
1866 | ||
987e68b1 MM |
1867 | DEBUG ("resuming thread %d (%s): %x (%s)", tp->num, |
1868 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); | |
52834460 MM |
1869 | |
1870 | btinfo = &tp->btrace; | |
1871 | ||
52834460 MM |
1872 | /* Fetch the latest branch trace. */ |
1873 | btrace_fetch (tp); | |
1874 | ||
0ca912df MM |
1875 | /* A resume request overwrites a preceding resume or stop request. */ |
1876 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1877 | btinfo->flags |= flag; |
1878 | } | |
1879 | ||
ec71cc2f MM |
1880 | /* Get the current frame for TP. */ |
1881 | ||
1882 | static struct frame_info * | |
1883 | get_thread_current_frame (struct thread_info *tp) | |
1884 | { | |
1885 | struct frame_info *frame; | |
1886 | ptid_t old_inferior_ptid; | |
1887 | int executing; | |
1888 | ||
1889 | /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ | |
1890 | old_inferior_ptid = inferior_ptid; | |
1891 | inferior_ptid = tp->ptid; | |
1892 | ||
1893 | /* Clear the executing flag to allow changes to the current frame. | |
1894 | We are not actually running, yet. We just started a reverse execution | |
1895 | command or a record goto command. | |
1896 | For the latter, EXECUTING is false and this has no effect. | |
1897 | For the former, EXECUTING is true and we're in to_wait, about to | |
1898 | move the thread. Since we need to recompute the stack, we temporarily | |
1899 | set EXECUTING to flase. */ | |
1900 | executing = is_executing (inferior_ptid); | |
1901 | set_executing (inferior_ptid, 0); | |
1902 | ||
1903 | frame = NULL; | |
1904 | TRY | |
1905 | { | |
1906 | frame = get_current_frame (); | |
1907 | } | |
1908 | CATCH (except, RETURN_MASK_ALL) | |
1909 | { | |
1910 | /* Restore the previous execution state. */ | |
1911 | set_executing (inferior_ptid, executing); | |
1912 | ||
1913 | /* Restore the previous inferior_ptid. */ | |
1914 | inferior_ptid = old_inferior_ptid; | |
1915 | ||
1916 | throw_exception (except); | |
1917 | } | |
1918 | END_CATCH | |
1919 | ||
1920 | /* Restore the previous execution state. */ | |
1921 | set_executing (inferior_ptid, executing); | |
1922 | ||
1923 | /* Restore the previous inferior_ptid. */ | |
1924 | inferior_ptid = old_inferior_ptid; | |
1925 | ||
1926 | return frame; | |
1927 | } | |
1928 | ||
52834460 MM |
1929 | /* Start replaying a thread. */ |
1930 | ||
1931 | static struct btrace_insn_iterator * | |
1932 | record_btrace_start_replaying (struct thread_info *tp) | |
1933 | { | |
52834460 MM |
1934 | struct btrace_insn_iterator *replay; |
1935 | struct btrace_thread_info *btinfo; | |
52834460 MM |
1936 | |
1937 | btinfo = &tp->btrace; | |
1938 | replay = NULL; | |
1939 | ||
1940 | /* We can't start replaying without trace. */ | |
1941 | if (btinfo->begin == NULL) | |
1942 | return NULL; | |
1943 | ||
52834460 MM |
1944 | /* GDB stores the current frame_id when stepping in order to detects steps |
1945 | into subroutines. | |
1946 | Since frames are computed differently when we're replaying, we need to | |
1947 | recompute those stored frames and fix them up so we can still detect | |
1948 | subroutines after we started replaying. */ | |
492d29ea | 1949 | TRY |
52834460 MM |
1950 | { |
1951 | struct frame_info *frame; | |
1952 | struct frame_id frame_id; | |
1953 | int upd_step_frame_id, upd_step_stack_frame_id; | |
1954 | ||
1955 | /* The current frame without replaying - computed via normal unwind. */ | |
ec71cc2f | 1956 | frame = get_thread_current_frame (tp); |
52834460 MM |
1957 | frame_id = get_frame_id (frame); |
1958 | ||
1959 | /* Check if we need to update any stepping-related frame id's. */ | |
1960 | upd_step_frame_id = frame_id_eq (frame_id, | |
1961 | tp->control.step_frame_id); | |
1962 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
1963 | tp->control.step_stack_frame_id); | |
1964 | ||
1965 | /* We start replaying at the end of the branch trace. This corresponds | |
1966 | to the current instruction. */ | |
8d749320 | 1967 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
1968 | btrace_insn_end (replay, btinfo); |
1969 | ||
31fd9caa MM |
1970 | /* Skip gaps at the end of the trace. */ |
1971 | while (btrace_insn_get (replay) == NULL) | |
1972 | { | |
1973 | unsigned int steps; | |
1974 | ||
1975 | steps = btrace_insn_prev (replay, 1); | |
1976 | if (steps == 0) | |
1977 | error (_("No trace.")); | |
1978 | } | |
1979 | ||
52834460 MM |
1980 | /* We're not replaying, yet. */ |
1981 | gdb_assert (btinfo->replay == NULL); | |
1982 | btinfo->replay = replay; | |
1983 | ||
1984 | /* Make sure we're not using any stale registers. */ | |
1985 | registers_changed_ptid (tp->ptid); | |
1986 | ||
1987 | /* The current frame with replaying - computed via btrace unwind. */ | |
ec71cc2f | 1988 | frame = get_thread_current_frame (tp); |
52834460 MM |
1989 | frame_id = get_frame_id (frame); |
1990 | ||
1991 | /* Replace stepping related frames where necessary. */ | |
1992 | if (upd_step_frame_id) | |
1993 | tp->control.step_frame_id = frame_id; | |
1994 | if (upd_step_stack_frame_id) | |
1995 | tp->control.step_stack_frame_id = frame_id; | |
1996 | } | |
492d29ea | 1997 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
1998 | { |
1999 | xfree (btinfo->replay); | |
2000 | btinfo->replay = NULL; | |
2001 | ||
2002 | registers_changed_ptid (tp->ptid); | |
2003 | ||
2004 | throw_exception (except); | |
2005 | } | |
492d29ea | 2006 | END_CATCH |
52834460 MM |
2007 | |
2008 | return replay; | |
2009 | } | |
2010 | ||
2011 | /* Stop replaying a thread. */ | |
2012 | ||
2013 | static void | |
2014 | record_btrace_stop_replaying (struct thread_info *tp) | |
2015 | { | |
2016 | struct btrace_thread_info *btinfo; | |
2017 | ||
2018 | btinfo = &tp->btrace; | |
2019 | ||
2020 | xfree (btinfo->replay); | |
2021 | btinfo->replay = NULL; | |
2022 | ||
2023 | /* Make sure we're not leaving any stale registers. */ | |
2024 | registers_changed_ptid (tp->ptid); | |
2025 | } | |
2026 | ||
e3cfc1c7 MM |
2027 | /* Stop replaying TP if it is at the end of its execution history. */ |
2028 | ||
2029 | static void | |
2030 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2031 | { | |
2032 | struct btrace_insn_iterator *replay, end; | |
2033 | struct btrace_thread_info *btinfo; | |
2034 | ||
2035 | btinfo = &tp->btrace; | |
2036 | replay = btinfo->replay; | |
2037 | ||
2038 | if (replay == NULL) | |
2039 | return; | |
2040 | ||
2041 | btrace_insn_end (&end, btinfo); | |
2042 | ||
2043 | if (btrace_insn_cmp (replay, &end) == 0) | |
2044 | record_btrace_stop_replaying (tp); | |
2045 | } | |
2046 | ||
b2f4cfde MM |
2047 | /* The to_resume method of target record-btrace. */ |
2048 | ||
2049 | static void | |
2050 | record_btrace_resume (struct target_ops *ops, ptid_t ptid, int step, | |
2051 | enum gdb_signal signal) | |
2052 | { | |
0ca912df | 2053 | struct thread_info *tp; |
d2939ba2 | 2054 | enum btrace_thread_flag flag, cflag; |
52834460 | 2055 | |
987e68b1 MM |
2056 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
2057 | execution_direction == EXEC_REVERSE ? "reverse-" : "", | |
2058 | step ? "step" : "cont"); | |
52834460 | 2059 | |
0ca912df MM |
2060 | /* Store the execution direction of the last resume. |
2061 | ||
2062 | If there is more than one to_resume call, we have to rely on infrun | |
2063 | to not change the execution direction in-between. */ | |
70ad5bff MM |
2064 | record_btrace_resume_exec_dir = execution_direction; |
2065 | ||
0ca912df | 2066 | /* As long as we're not replaying, just forward the request. |
52834460 | 2067 | |
0ca912df MM |
2068 | For non-stop targets this means that no thread is replaying. In order to |
2069 | make progress, we may need to explicitly move replaying threads to the end | |
2070 | of their execution history. */ | |
a52eab48 MM |
2071 | if ((execution_direction != EXEC_REVERSE) |
2072 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2073 | { |
e75fdfca | 2074 | ops = ops->beneath; |
04c4fe8c MM |
2075 | ops->to_resume (ops, ptid, step, signal); |
2076 | return; | |
b2f4cfde MM |
2077 | } |
2078 | ||
52834460 | 2079 | /* Compute the btrace thread flag for the requested move. */ |
d2939ba2 MM |
2080 | if (execution_direction == EXEC_REVERSE) |
2081 | { | |
2082 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2083 | cflag = BTHR_RCONT; | |
2084 | } | |
52834460 | 2085 | else |
d2939ba2 MM |
2086 | { |
2087 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2088 | cflag = BTHR_CONT; | |
2089 | } | |
52834460 | 2090 | |
52834460 | 2091 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2092 | record_btrace_wait below. |
2093 | ||
2094 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2095 | if (!target_is_non_stop_p ()) | |
2096 | { | |
2097 | gdb_assert (ptid_match (inferior_ptid, ptid)); | |
2098 | ||
2099 | ALL_NON_EXITED_THREADS (tp) | |
2100 | if (ptid_match (tp->ptid, ptid)) | |
2101 | { | |
2102 | if (ptid_match (tp->ptid, inferior_ptid)) | |
2103 | record_btrace_resume_thread (tp, flag); | |
2104 | else | |
2105 | record_btrace_resume_thread (tp, cflag); | |
2106 | } | |
2107 | } | |
2108 | else | |
2109 | { | |
2110 | ALL_NON_EXITED_THREADS (tp) | |
2111 | if (ptid_match (tp->ptid, ptid)) | |
2112 | record_btrace_resume_thread (tp, flag); | |
2113 | } | |
70ad5bff MM |
2114 | |
2115 | /* Async support. */ | |
2116 | if (target_can_async_p ()) | |
2117 | { | |
6a3753b3 | 2118 | target_async (1); |
70ad5bff MM |
2119 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2120 | } | |
52834460 MM |
2121 | } |
2122 | ||
987e68b1 MM |
2123 | /* Cancel resuming TP. */ |
2124 | ||
2125 | static void | |
2126 | record_btrace_cancel_resume (struct thread_info *tp) | |
2127 | { | |
2128 | enum btrace_thread_flag flags; | |
2129 | ||
2130 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2131 | if (flags == 0) | |
2132 | return; | |
2133 | ||
2134 | DEBUG ("cancel resume thread %d (%s): %x (%s)", tp->num, | |
2135 | target_pid_to_str (tp->ptid), flags, | |
2136 | btrace_thread_flag_to_str (flags)); | |
2137 | ||
2138 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2139 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2140 | } |
2141 | ||
2142 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2143 | ||
2144 | static struct target_waitstatus | |
2145 | btrace_step_no_history (void) | |
2146 | { | |
2147 | struct target_waitstatus status; | |
2148 | ||
2149 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2150 | ||
2151 | return status; | |
2152 | } | |
2153 | ||
2154 | /* Return a target_waitstatus indicating that a step finished. */ | |
2155 | ||
2156 | static struct target_waitstatus | |
2157 | btrace_step_stopped (void) | |
2158 | { | |
2159 | struct target_waitstatus status; | |
2160 | ||
2161 | status.kind = TARGET_WAITKIND_STOPPED; | |
2162 | status.value.sig = GDB_SIGNAL_TRAP; | |
2163 | ||
2164 | return status; | |
2165 | } | |
2166 | ||
6e4879f0 MM |
2167 | /* Return a target_waitstatus indicating that a thread was stopped as |
2168 | requested. */ | |
2169 | ||
2170 | static struct target_waitstatus | |
2171 | btrace_step_stopped_on_request (void) | |
2172 | { | |
2173 | struct target_waitstatus status; | |
2174 | ||
2175 | status.kind = TARGET_WAITKIND_STOPPED; | |
2176 | status.value.sig = GDB_SIGNAL_0; | |
2177 | ||
2178 | return status; | |
2179 | } | |
2180 | ||
d825d248 MM |
2181 | /* Return a target_waitstatus indicating a spurious stop. */ |
2182 | ||
2183 | static struct target_waitstatus | |
2184 | btrace_step_spurious (void) | |
2185 | { | |
2186 | struct target_waitstatus status; | |
2187 | ||
2188 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2189 | ||
2190 | return status; | |
2191 | } | |
2192 | ||
e3cfc1c7 MM |
2193 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2194 | ||
2195 | static struct target_waitstatus | |
2196 | btrace_step_no_resumed (void) | |
2197 | { | |
2198 | struct target_waitstatus status; | |
2199 | ||
2200 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2201 | ||
2202 | return status; | |
2203 | } | |
2204 | ||
2205 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2206 | ||
2207 | static struct target_waitstatus | |
2208 | btrace_step_again (void) | |
2209 | { | |
2210 | struct target_waitstatus status; | |
2211 | ||
2212 | status.kind = TARGET_WAITKIND_IGNORE; | |
2213 | ||
2214 | return status; | |
2215 | } | |
2216 | ||
52834460 MM |
2217 | /* Clear the record histories. */ |
2218 | ||
2219 | static void | |
2220 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2221 | { | |
2222 | xfree (btinfo->insn_history); | |
2223 | xfree (btinfo->call_history); | |
2224 | ||
2225 | btinfo->insn_history = NULL; | |
2226 | btinfo->call_history = NULL; | |
2227 | } | |
2228 | ||
3c615f99 MM |
2229 | /* Check whether TP's current replay position is at a breakpoint. */ |
2230 | ||
2231 | static int | |
2232 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2233 | { | |
2234 | struct btrace_insn_iterator *replay; | |
2235 | struct btrace_thread_info *btinfo; | |
2236 | const struct btrace_insn *insn; | |
2237 | struct inferior *inf; | |
2238 | ||
2239 | btinfo = &tp->btrace; | |
2240 | replay = btinfo->replay; | |
2241 | ||
2242 | if (replay == NULL) | |
2243 | return 0; | |
2244 | ||
2245 | insn = btrace_insn_get (replay); | |
2246 | if (insn == NULL) | |
2247 | return 0; | |
2248 | ||
2249 | inf = find_inferior_ptid (tp->ptid); | |
2250 | if (inf == NULL) | |
2251 | return 0; | |
2252 | ||
2253 | return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, | |
2254 | &btinfo->stop_reason); | |
2255 | } | |
2256 | ||
d825d248 | 2257 | /* Step one instruction in forward direction. */ |
52834460 MM |
2258 | |
2259 | static struct target_waitstatus | |
d825d248 | 2260 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 MM |
2261 | { |
2262 | struct btrace_insn_iterator *replay, end; | |
2263 | struct btrace_thread_info *btinfo; | |
52834460 | 2264 | |
d825d248 MM |
2265 | btinfo = &tp->btrace; |
2266 | replay = btinfo->replay; | |
2267 | ||
2268 | /* We're done if we're not replaying. */ | |
2269 | if (replay == NULL) | |
2270 | return btrace_step_no_history (); | |
2271 | ||
011c71b6 MM |
2272 | /* Check if we're stepping a breakpoint. */ |
2273 | if (record_btrace_replay_at_breakpoint (tp)) | |
2274 | return btrace_step_stopped (); | |
2275 | ||
d825d248 MM |
2276 | /* Skip gaps during replay. */ |
2277 | do | |
2278 | { | |
2279 | unsigned int steps; | |
2280 | ||
e3cfc1c7 MM |
2281 | /* We will bail out here if we continue stepping after reaching the end |
2282 | of the execution history. */ | |
d825d248 MM |
2283 | steps = btrace_insn_next (replay, 1); |
2284 | if (steps == 0) | |
e3cfc1c7 | 2285 | return btrace_step_no_history (); |
d825d248 MM |
2286 | } |
2287 | while (btrace_insn_get (replay) == NULL); | |
2288 | ||
2289 | /* Determine the end of the instruction trace. */ | |
2290 | btrace_insn_end (&end, btinfo); | |
2291 | ||
e3cfc1c7 MM |
2292 | /* The execution trace contains (and ends with) the current instruction. |
2293 | This instruction has not been executed, yet, so the trace really ends | |
2294 | one instruction earlier. */ | |
d825d248 | 2295 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2296 | return btrace_step_no_history (); |
d825d248 MM |
2297 | |
2298 | return btrace_step_spurious (); | |
2299 | } | |
2300 | ||
2301 | /* Step one instruction in backward direction. */ | |
2302 | ||
2303 | static struct target_waitstatus | |
2304 | record_btrace_single_step_backward (struct thread_info *tp) | |
2305 | { | |
2306 | struct btrace_insn_iterator *replay; | |
2307 | struct btrace_thread_info *btinfo; | |
e59fa00f | 2308 | |
52834460 MM |
2309 | btinfo = &tp->btrace; |
2310 | replay = btinfo->replay; | |
2311 | ||
d825d248 MM |
2312 | /* Start replaying if we're not already doing so. */ |
2313 | if (replay == NULL) | |
2314 | replay = record_btrace_start_replaying (tp); | |
2315 | ||
2316 | /* If we can't step any further, we reached the end of the history. | |
2317 | Skip gaps during replay. */ | |
2318 | do | |
2319 | { | |
2320 | unsigned int steps; | |
2321 | ||
2322 | steps = btrace_insn_prev (replay, 1); | |
2323 | if (steps == 0) | |
2324 | return btrace_step_no_history (); | |
2325 | } | |
2326 | while (btrace_insn_get (replay) == NULL); | |
2327 | ||
011c71b6 MM |
2328 | /* Check if we're stepping a breakpoint. |
2329 | ||
2330 | For reverse-stepping, this check is after the step. There is logic in | |
2331 | infrun.c that handles reverse-stepping separately. See, for example, | |
2332 | proceed and adjust_pc_after_break. | |
2333 | ||
2334 | This code assumes that for reverse-stepping, PC points to the last | |
2335 | de-executed instruction, whereas for forward-stepping PC points to the | |
2336 | next to-be-executed instruction. */ | |
2337 | if (record_btrace_replay_at_breakpoint (tp)) | |
2338 | return btrace_step_stopped (); | |
2339 | ||
d825d248 MM |
2340 | return btrace_step_spurious (); |
2341 | } | |
2342 | ||
2343 | /* Step a single thread. */ | |
2344 | ||
2345 | static struct target_waitstatus | |
2346 | record_btrace_step_thread (struct thread_info *tp) | |
2347 | { | |
2348 | struct btrace_thread_info *btinfo; | |
2349 | struct target_waitstatus status; | |
2350 | enum btrace_thread_flag flags; | |
2351 | ||
2352 | btinfo = &tp->btrace; | |
2353 | ||
6e4879f0 MM |
2354 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2355 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2356 | |
987e68b1 MM |
2357 | DEBUG ("stepping thread %d (%s): %x (%s)", tp->num, |
2358 | target_pid_to_str (tp->ptid), flags, | |
2359 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2360 | |
6e4879f0 MM |
2361 | /* We can't step without an execution history. */ |
2362 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2363 | return btrace_step_no_history (); | |
2364 | ||
52834460 MM |
2365 | switch (flags) |
2366 | { | |
2367 | default: | |
2368 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2369 | ||
6e4879f0 MM |
2370 | case BTHR_STOP: |
2371 | return btrace_step_stopped_on_request (); | |
2372 | ||
52834460 | 2373 | case BTHR_STEP: |
d825d248 MM |
2374 | status = record_btrace_single_step_forward (tp); |
2375 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2376 | break; |
52834460 MM |
2377 | |
2378 | return btrace_step_stopped (); | |
2379 | ||
2380 | case BTHR_RSTEP: | |
d825d248 MM |
2381 | status = record_btrace_single_step_backward (tp); |
2382 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2383 | break; |
52834460 MM |
2384 | |
2385 | return btrace_step_stopped (); | |
2386 | ||
2387 | case BTHR_CONT: | |
e3cfc1c7 MM |
2388 | status = record_btrace_single_step_forward (tp); |
2389 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2390 | break; | |
52834460 | 2391 | |
e3cfc1c7 MM |
2392 | btinfo->flags |= flags; |
2393 | return btrace_step_again (); | |
52834460 MM |
2394 | |
2395 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2396 | status = record_btrace_single_step_backward (tp); |
2397 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2398 | break; | |
52834460 | 2399 | |
e3cfc1c7 MM |
2400 | btinfo->flags |= flags; |
2401 | return btrace_step_again (); | |
2402 | } | |
d825d248 | 2403 | |
e3cfc1c7 MM |
2404 | /* We keep threads moving at the end of their execution history. The to_wait |
2405 | method will stop the thread for whom the event is reported. */ | |
2406 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2407 | btinfo->flags |= flags; | |
52834460 | 2408 | |
e3cfc1c7 | 2409 | return status; |
b2f4cfde MM |
2410 | } |
2411 | ||
e3cfc1c7 MM |
2412 | /* A vector of threads. */ |
2413 | ||
2414 | typedef struct thread_info * tp_t; | |
2415 | DEF_VEC_P (tp_t); | |
2416 | ||
a6b5be76 MM |
2417 | /* Announce further events if necessary. */ |
2418 | ||
2419 | static void | |
2420 | record_btrace_maybe_mark_async_event (const VEC (tp_t) *moving, | |
2421 | const VEC (tp_t) *no_history) | |
2422 | { | |
2423 | int more_moving, more_no_history; | |
2424 | ||
2425 | more_moving = !VEC_empty (tp_t, moving); | |
2426 | more_no_history = !VEC_empty (tp_t, no_history); | |
2427 | ||
2428 | if (!more_moving && !more_no_history) | |
2429 | return; | |
2430 | ||
2431 | if (more_moving) | |
2432 | DEBUG ("movers pending"); | |
2433 | ||
2434 | if (more_no_history) | |
2435 | DEBUG ("no-history pending"); | |
2436 | ||
2437 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2438 | } | |
2439 | ||
b2f4cfde MM |
2440 | /* The to_wait method of target record-btrace. */ |
2441 | ||
2442 | static ptid_t | |
2443 | record_btrace_wait (struct target_ops *ops, ptid_t ptid, | |
2444 | struct target_waitstatus *status, int options) | |
2445 | { | |
e3cfc1c7 MM |
2446 | VEC (tp_t) *moving, *no_history; |
2447 | struct thread_info *tp, *eventing; | |
2448 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
52834460 MM |
2449 | |
2450 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2451 | ||
b2f4cfde | 2452 | /* As long as we're not replaying, just forward the request. */ |
a52eab48 MM |
2453 | if ((execution_direction != EXEC_REVERSE) |
2454 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
b2f4cfde | 2455 | { |
e75fdfca TT |
2456 | ops = ops->beneath; |
2457 | return ops->to_wait (ops, ptid, status, options); | |
b2f4cfde MM |
2458 | } |
2459 | ||
e3cfc1c7 MM |
2460 | moving = NULL; |
2461 | no_history = NULL; | |
2462 | ||
2463 | make_cleanup (VEC_cleanup (tp_t), &moving); | |
2464 | make_cleanup (VEC_cleanup (tp_t), &no_history); | |
2465 | ||
2466 | /* Keep a work list of moving threads. */ | |
2467 | ALL_NON_EXITED_THREADS (tp) | |
2468 | if (ptid_match (tp->ptid, ptid) | |
2469 | && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) | |
2470 | VEC_safe_push (tp_t, moving, tp); | |
2471 | ||
2472 | if (VEC_empty (tp_t, moving)) | |
52834460 | 2473 | { |
e3cfc1c7 | 2474 | *status = btrace_step_no_resumed (); |
52834460 | 2475 | |
e3cfc1c7 MM |
2476 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
2477 | target_waitstatus_to_string (status)); | |
2478 | ||
2479 | do_cleanups (cleanups); | |
2480 | return null_ptid; | |
52834460 MM |
2481 | } |
2482 | ||
e3cfc1c7 MM |
2483 | /* Step moving threads one by one, one step each, until either one thread |
2484 | reports an event or we run out of threads to step. | |
2485 | ||
2486 | When stepping more than one thread, chances are that some threads reach | |
2487 | the end of their execution history earlier than others. If we reported | |
2488 | this immediately, all-stop on top of non-stop would stop all threads and | |
2489 | resume the same threads next time. And we would report the same thread | |
2490 | having reached the end of its execution history again. | |
2491 | ||
2492 | In the worst case, this would starve the other threads. But even if other | |
2493 | threads would be allowed to make progress, this would result in far too | |
2494 | many intermediate stops. | |
2495 | ||
2496 | We therefore delay the reporting of "no execution history" until we have | |
2497 | nothing else to report. By this time, all threads should have moved to | |
2498 | either the beginning or the end of their execution history. There will | |
2499 | be a single user-visible stop. */ | |
2500 | eventing = NULL; | |
2501 | while ((eventing == NULL) && !VEC_empty (tp_t, moving)) | |
2502 | { | |
2503 | unsigned int ix; | |
2504 | ||
2505 | ix = 0; | |
2506 | while ((eventing == NULL) && VEC_iterate (tp_t, moving, ix, tp)) | |
2507 | { | |
2508 | *status = record_btrace_step_thread (tp); | |
2509 | ||
2510 | switch (status->kind) | |
2511 | { | |
2512 | case TARGET_WAITKIND_IGNORE: | |
2513 | ix++; | |
2514 | break; | |
2515 | ||
2516 | case TARGET_WAITKIND_NO_HISTORY: | |
2517 | VEC_safe_push (tp_t, no_history, | |
2518 | VEC_ordered_remove (tp_t, moving, ix)); | |
2519 | break; | |
2520 | ||
2521 | default: | |
2522 | eventing = VEC_unordered_remove (tp_t, moving, ix); | |
2523 | break; | |
2524 | } | |
2525 | } | |
2526 | } | |
2527 | ||
2528 | if (eventing == NULL) | |
2529 | { | |
2530 | /* We started with at least one moving thread. This thread must have | |
2531 | either stopped or reached the end of its execution history. | |
2532 | ||
2533 | In the former case, EVENTING must not be NULL. | |
2534 | In the latter case, NO_HISTORY must not be empty. */ | |
2535 | gdb_assert (!VEC_empty (tp_t, no_history)); | |
2536 | ||
2537 | /* We kept threads moving at the end of their execution history. Stop | |
2538 | EVENTING now that we are going to report its stop. */ | |
2539 | eventing = VEC_unordered_remove (tp_t, no_history, 0); | |
2540 | eventing->btrace.flags &= ~BTHR_MOVE; | |
2541 | ||
2542 | *status = btrace_step_no_history (); | |
2543 | } | |
2544 | ||
2545 | gdb_assert (eventing != NULL); | |
2546 | ||
2547 | /* We kept threads replaying at the end of their execution history. Stop | |
2548 | replaying EVENTING now that we are going to report its stop. */ | |
2549 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2550 | |
2551 | /* Stop all other threads. */ | |
5953356c | 2552 | if (!target_is_non_stop_p ()) |
e3cfc1c7 MM |
2553 | ALL_NON_EXITED_THREADS (tp) |
2554 | record_btrace_cancel_resume (tp); | |
52834460 | 2555 | |
a6b5be76 MM |
2556 | /* In async mode, we need to announce further events. */ |
2557 | if (target_is_async_p ()) | |
2558 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2559 | ||
52834460 | 2560 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2561 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2562 | |
2563 | /* We moved the replay position but did not update registers. */ | |
e3cfc1c7 MM |
2564 | registers_changed_ptid (eventing->ptid); |
2565 | ||
2566 | DEBUG ("wait ended by thread %d (%s): %s", eventing->num, | |
2567 | target_pid_to_str (eventing->ptid), | |
2568 | target_waitstatus_to_string (status)); | |
52834460 | 2569 | |
e3cfc1c7 MM |
2570 | do_cleanups (cleanups); |
2571 | return eventing->ptid; | |
52834460 MM |
2572 | } |
2573 | ||
6e4879f0 MM |
2574 | /* The to_stop method of target record-btrace. */ |
2575 | ||
2576 | static void | |
2577 | record_btrace_stop (struct target_ops *ops, ptid_t ptid) | |
2578 | { | |
2579 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2580 | ||
2581 | /* As long as we're not replaying, just forward the request. */ | |
a52eab48 MM |
2582 | if ((execution_direction != EXEC_REVERSE) |
2583 | && !record_btrace_is_replaying (ops, minus_one_ptid)) | |
6e4879f0 MM |
2584 | { |
2585 | ops = ops->beneath; | |
2586 | ops->to_stop (ops, ptid); | |
2587 | } | |
2588 | else | |
2589 | { | |
2590 | struct thread_info *tp; | |
2591 | ||
2592 | ALL_NON_EXITED_THREADS (tp) | |
2593 | if (ptid_match (tp->ptid, ptid)) | |
2594 | { | |
2595 | tp->btrace.flags &= ~BTHR_MOVE; | |
2596 | tp->btrace.flags |= BTHR_STOP; | |
2597 | } | |
2598 | } | |
2599 | } | |
2600 | ||
52834460 MM |
2601 | /* The to_can_execute_reverse method of target record-btrace. */ |
2602 | ||
2603 | static int | |
19db3e69 | 2604 | record_btrace_can_execute_reverse (struct target_ops *self) |
52834460 MM |
2605 | { |
2606 | return 1; | |
2607 | } | |
2608 | ||
9e8915c6 | 2609 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2610 | |
9e8915c6 PA |
2611 | static int |
2612 | record_btrace_stopped_by_sw_breakpoint (struct target_ops *ops) | |
52834460 | 2613 | { |
a52eab48 | 2614 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2615 | { |
2616 | struct thread_info *tp = inferior_thread (); | |
2617 | ||
2618 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2619 | } | |
2620 | ||
2621 | return ops->beneath->to_stopped_by_sw_breakpoint (ops->beneath); | |
2622 | } | |
2623 | ||
2624 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
2625 | record-btrace. */ | |
2626 | ||
2627 | static int | |
2628 | record_btrace_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
2629 | { | |
a52eab48 | 2630 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2631 | return 1; |
2632 | ||
2633 | return ops->beneath->to_supports_stopped_by_sw_breakpoint (ops->beneath); | |
2634 | } | |
2635 | ||
2636 | /* The to_stopped_by_sw_breakpoint method of target record-btrace. */ | |
2637 | ||
2638 | static int | |
2639 | record_btrace_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2640 | { | |
a52eab48 | 2641 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 PA |
2642 | { |
2643 | struct thread_info *tp = inferior_thread (); | |
2644 | ||
2645 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2646 | } | |
2647 | ||
2648 | return ops->beneath->to_stopped_by_hw_breakpoint (ops->beneath); | |
2649 | } | |
2650 | ||
2651 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
2652 | record-btrace. */ | |
2653 | ||
2654 | static int | |
2655 | record_btrace_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
2656 | { | |
a52eab48 | 2657 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
9e8915c6 | 2658 | return 1; |
52834460 | 2659 | |
9e8915c6 | 2660 | return ops->beneath->to_supports_stopped_by_hw_breakpoint (ops->beneath); |
b2f4cfde MM |
2661 | } |
2662 | ||
e8032dde | 2663 | /* The to_update_thread_list method of target record-btrace. */ |
e2887aa3 MM |
2664 | |
2665 | static void | |
e8032dde | 2666 | record_btrace_update_thread_list (struct target_ops *ops) |
e2887aa3 | 2667 | { |
e8032dde | 2668 | /* We don't add or remove threads during replay. */ |
a52eab48 | 2669 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2670 | return; |
2671 | ||
2672 | /* Forward the request. */ | |
e75fdfca | 2673 | ops = ops->beneath; |
e8032dde | 2674 | ops->to_update_thread_list (ops); |
e2887aa3 MM |
2675 | } |
2676 | ||
2677 | /* The to_thread_alive method of target record-btrace. */ | |
2678 | ||
2679 | static int | |
2680 | record_btrace_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2681 | { | |
2682 | /* We don't add or remove threads during replay. */ | |
a52eab48 | 2683 | if (record_btrace_is_replaying (ops, minus_one_ptid)) |
e2887aa3 MM |
2684 | return find_thread_ptid (ptid) != NULL; |
2685 | ||
2686 | /* Forward the request. */ | |
e75fdfca TT |
2687 | ops = ops->beneath; |
2688 | return ops->to_thread_alive (ops, ptid); | |
e2887aa3 MM |
2689 | } |
2690 | ||
066ce621 MM |
2691 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2692 | is stopped. */ | |
2693 | ||
2694 | static void | |
2695 | record_btrace_set_replay (struct thread_info *tp, | |
2696 | const struct btrace_insn_iterator *it) | |
2697 | { | |
2698 | struct btrace_thread_info *btinfo; | |
2699 | ||
2700 | btinfo = &tp->btrace; | |
2701 | ||
2702 | if (it == NULL || it->function == NULL) | |
52834460 | 2703 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2704 | else |
2705 | { | |
2706 | if (btinfo->replay == NULL) | |
52834460 | 2707 | record_btrace_start_replaying (tp); |
066ce621 MM |
2708 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2709 | return; | |
2710 | ||
2711 | *btinfo->replay = *it; | |
52834460 | 2712 | registers_changed_ptid (tp->ptid); |
066ce621 MM |
2713 | } |
2714 | ||
52834460 MM |
2715 | /* Start anew from the new replay position. */ |
2716 | record_btrace_clear_histories (btinfo); | |
485668e5 MM |
2717 | |
2718 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
2719 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
066ce621 MM |
2720 | } |
2721 | ||
2722 | /* The to_goto_record_begin method of target record-btrace. */ | |
2723 | ||
2724 | static void | |
08475817 | 2725 | record_btrace_goto_begin (struct target_ops *self) |
066ce621 MM |
2726 | { |
2727 | struct thread_info *tp; | |
2728 | struct btrace_insn_iterator begin; | |
2729 | ||
2730 | tp = require_btrace_thread (); | |
2731 | ||
2732 | btrace_insn_begin (&begin, &tp->btrace); | |
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); | |
2767 | if (found == 0) | |
2768 | error (_("No such instruction.")); | |
2769 | ||
2770 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2771 | } |
2772 | ||
797094dd MM |
2773 | /* The to_record_stop_replaying method of target record-btrace. */ |
2774 | ||
2775 | static void | |
2776 | record_btrace_stop_replaying_all (struct target_ops *self) | |
2777 | { | |
2778 | struct thread_info *tp; | |
2779 | ||
2780 | ALL_NON_EXITED_THREADS (tp) | |
2781 | record_btrace_stop_replaying (tp); | |
2782 | } | |
2783 | ||
70ad5bff MM |
2784 | /* The to_execution_direction target method. */ |
2785 | ||
2786 | static enum exec_direction_kind | |
2787 | record_btrace_execution_direction (struct target_ops *self) | |
2788 | { | |
2789 | return record_btrace_resume_exec_dir; | |
2790 | } | |
2791 | ||
aef92902 MM |
2792 | /* The to_prepare_to_generate_core target method. */ |
2793 | ||
2794 | static void | |
2795 | record_btrace_prepare_to_generate_core (struct target_ops *self) | |
2796 | { | |
2797 | record_btrace_generating_corefile = 1; | |
2798 | } | |
2799 | ||
2800 | /* The to_done_generating_core target method. */ | |
2801 | ||
2802 | static void | |
2803 | record_btrace_done_generating_core (struct target_ops *self) | |
2804 | { | |
2805 | record_btrace_generating_corefile = 0; | |
2806 | } | |
2807 | ||
afedecd3 MM |
2808 | /* Initialize the record-btrace target ops. */ |
2809 | ||
2810 | static void | |
2811 | init_record_btrace_ops (void) | |
2812 | { | |
2813 | struct target_ops *ops; | |
2814 | ||
2815 | ops = &record_btrace_ops; | |
2816 | ops->to_shortname = "record-btrace"; | |
2817 | ops->to_longname = "Branch tracing target"; | |
2818 | ops->to_doc = "Collect control-flow trace and provide the execution history."; | |
2819 | ops->to_open = record_btrace_open; | |
2820 | ops->to_close = record_btrace_close; | |
b7d2e916 | 2821 | ops->to_async = record_btrace_async; |
afedecd3 MM |
2822 | ops->to_detach = record_detach; |
2823 | ops->to_disconnect = record_disconnect; | |
2824 | ops->to_mourn_inferior = record_mourn_inferior; | |
2825 | ops->to_kill = record_kill; | |
afedecd3 MM |
2826 | ops->to_stop_recording = record_btrace_stop_recording; |
2827 | ops->to_info_record = record_btrace_info; | |
2828 | ops->to_insn_history = record_btrace_insn_history; | |
2829 | ops->to_insn_history_from = record_btrace_insn_history_from; | |
2830 | ops->to_insn_history_range = record_btrace_insn_history_range; | |
2831 | ops->to_call_history = record_btrace_call_history; | |
2832 | ops->to_call_history_from = record_btrace_call_history_from; | |
2833 | ops->to_call_history_range = record_btrace_call_history_range; | |
07bbe694 | 2834 | ops->to_record_is_replaying = record_btrace_is_replaying; |
7ff27e9b | 2835 | ops->to_record_will_replay = record_btrace_will_replay; |
797094dd | 2836 | ops->to_record_stop_replaying = record_btrace_stop_replaying_all; |
633785ff MM |
2837 | ops->to_xfer_partial = record_btrace_xfer_partial; |
2838 | ops->to_remove_breakpoint = record_btrace_remove_breakpoint; | |
2839 | ops->to_insert_breakpoint = record_btrace_insert_breakpoint; | |
1f3ef581 MM |
2840 | ops->to_fetch_registers = record_btrace_fetch_registers; |
2841 | ops->to_store_registers = record_btrace_store_registers; | |
2842 | ops->to_prepare_to_store = record_btrace_prepare_to_store; | |
ac01945b TT |
2843 | ops->to_get_unwinder = &record_btrace_to_get_unwinder; |
2844 | ops->to_get_tailcall_unwinder = &record_btrace_to_get_tailcall_unwinder; | |
b2f4cfde MM |
2845 | ops->to_resume = record_btrace_resume; |
2846 | ops->to_wait = record_btrace_wait; | |
6e4879f0 | 2847 | ops->to_stop = record_btrace_stop; |
e8032dde | 2848 | ops->to_update_thread_list = record_btrace_update_thread_list; |
e2887aa3 | 2849 | ops->to_thread_alive = record_btrace_thread_alive; |
066ce621 MM |
2850 | ops->to_goto_record_begin = record_btrace_goto_begin; |
2851 | ops->to_goto_record_end = record_btrace_goto_end; | |
2852 | ops->to_goto_record = record_btrace_goto; | |
52834460 | 2853 | ops->to_can_execute_reverse = record_btrace_can_execute_reverse; |
9e8915c6 PA |
2854 | ops->to_stopped_by_sw_breakpoint = record_btrace_stopped_by_sw_breakpoint; |
2855 | ops->to_supports_stopped_by_sw_breakpoint | |
2856 | = record_btrace_supports_stopped_by_sw_breakpoint; | |
2857 | ops->to_stopped_by_hw_breakpoint = record_btrace_stopped_by_hw_breakpoint; | |
2858 | ops->to_supports_stopped_by_hw_breakpoint | |
2859 | = record_btrace_supports_stopped_by_hw_breakpoint; | |
70ad5bff | 2860 | ops->to_execution_direction = record_btrace_execution_direction; |
aef92902 MM |
2861 | ops->to_prepare_to_generate_core = record_btrace_prepare_to_generate_core; |
2862 | ops->to_done_generating_core = record_btrace_done_generating_core; | |
afedecd3 MM |
2863 | ops->to_stratum = record_stratum; |
2864 | ops->to_magic = OPS_MAGIC; | |
2865 | } | |
2866 | ||
f4abbc16 MM |
2867 | /* Start recording in BTS format. */ |
2868 | ||
2869 | static void | |
2870 | cmd_record_btrace_bts_start (char *args, int from_tty) | |
2871 | { | |
f4abbc16 MM |
2872 | if (args != NULL && *args != 0) |
2873 | error (_("Invalid argument.")); | |
2874 | ||
2875 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2876 | ||
492d29ea PA |
2877 | TRY |
2878 | { | |
2879 | execute_command ("target record-btrace", from_tty); | |
2880 | } | |
2881 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2882 | { |
2883 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2884 | throw_exception (exception); | |
2885 | } | |
492d29ea | 2886 | END_CATCH |
f4abbc16 MM |
2887 | } |
2888 | ||
b20a6524 | 2889 | /* Start recording Intel(R) Processor Trace. */ |
afedecd3 MM |
2890 | |
2891 | static void | |
b20a6524 | 2892 | cmd_record_btrace_pt_start (char *args, int from_tty) |
afedecd3 MM |
2893 | { |
2894 | if (args != NULL && *args != 0) | |
2895 | error (_("Invalid argument.")); | |
2896 | ||
b20a6524 | 2897 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2898 | |
492d29ea PA |
2899 | TRY |
2900 | { | |
2901 | execute_command ("target record-btrace", from_tty); | |
2902 | } | |
2903 | CATCH (exception, RETURN_MASK_ALL) | |
2904 | { | |
2905 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2906 | throw_exception (exception); | |
2907 | } | |
2908 | END_CATCH | |
afedecd3 MM |
2909 | } |
2910 | ||
b20a6524 MM |
2911 | /* Alias for "target record". */ |
2912 | ||
2913 | static void | |
2914 | cmd_record_btrace_start (char *args, int from_tty) | |
2915 | { | |
2916 | if (args != NULL && *args != 0) | |
2917 | error (_("Invalid argument.")); | |
2918 | ||
2919 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2920 | ||
2921 | TRY | |
2922 | { | |
2923 | execute_command ("target record-btrace", from_tty); | |
2924 | } | |
2925 | CATCH (exception, RETURN_MASK_ALL) | |
2926 | { | |
2927 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2928 | ||
2929 | TRY | |
2930 | { | |
2931 | execute_command ("target record-btrace", from_tty); | |
2932 | } | |
2933 | CATCH (exception, RETURN_MASK_ALL) | |
2934 | { | |
2935 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2936 | throw_exception (exception); | |
2937 | } | |
2938 | END_CATCH | |
2939 | } | |
2940 | END_CATCH | |
2941 | } | |
2942 | ||
67b5c0c1 MM |
2943 | /* The "set record btrace" command. */ |
2944 | ||
2945 | static void | |
2946 | cmd_set_record_btrace (char *args, int from_tty) | |
2947 | { | |
2948 | cmd_show_list (set_record_btrace_cmdlist, from_tty, ""); | |
2949 | } | |
2950 | ||
2951 | /* The "show record btrace" command. */ | |
2952 | ||
2953 | static void | |
2954 | cmd_show_record_btrace (char *args, int from_tty) | |
2955 | { | |
2956 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2957 | } | |
2958 | ||
2959 | /* The "show record btrace replay-memory-access" command. */ | |
2960 | ||
2961 | static void | |
2962 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2963 | struct cmd_list_element *c, const char *value) | |
2964 | { | |
2965 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2966 | replay_memory_access); | |
2967 | } | |
2968 | ||
d33501a5 MM |
2969 | /* The "set record btrace bts" command. */ |
2970 | ||
2971 | static void | |
2972 | cmd_set_record_btrace_bts (char *args, int from_tty) | |
2973 | { | |
2974 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 2975 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
2976 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
2977 | all_commands, gdb_stdout); | |
2978 | } | |
2979 | ||
2980 | /* The "show record btrace bts" command. */ | |
2981 | ||
2982 | static void | |
2983 | cmd_show_record_btrace_bts (char *args, int from_tty) | |
2984 | { | |
2985 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
2986 | } | |
2987 | ||
b20a6524 MM |
2988 | /* The "set record btrace pt" command. */ |
2989 | ||
2990 | static void | |
2991 | cmd_set_record_btrace_pt (char *args, int from_tty) | |
2992 | { | |
2993 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
2994 | "by an appropriate subcommand.\n")); | |
2995 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
2996 | all_commands, gdb_stdout); | |
2997 | } | |
2998 | ||
2999 | /* The "show record btrace pt" command. */ | |
3000 | ||
3001 | static void | |
3002 | cmd_show_record_btrace_pt (char *args, int from_tty) | |
3003 | { | |
3004 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3005 | } | |
3006 | ||
3007 | /* The "record bts buffer-size" show value function. */ | |
3008 | ||
3009 | static void | |
3010 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3011 | struct cmd_list_element *c, | |
3012 | const char *value) | |
3013 | { | |
3014 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3015 | value); | |
3016 | } | |
3017 | ||
3018 | /* The "record pt buffer-size" show value function. */ | |
3019 | ||
3020 | static void | |
3021 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3022 | struct cmd_list_element *c, | |
3023 | const char *value) | |
3024 | { | |
3025 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3026 | value); | |
3027 | } | |
3028 | ||
afedecd3 MM |
3029 | void _initialize_record_btrace (void); |
3030 | ||
3031 | /* Initialize btrace commands. */ | |
3032 | ||
3033 | void | |
3034 | _initialize_record_btrace (void) | |
3035 | { | |
f4abbc16 MM |
3036 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3037 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3038 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3039 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3040 | ||
f4abbc16 MM |
3041 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3042 | _("\ | |
3043 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3044 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3045 | This format may not be available on all processors."), | |
3046 | &record_btrace_cmdlist); | |
3047 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3048 | ||
b20a6524 MM |
3049 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3050 | _("\ | |
3051 | Start branch trace recording in Intel(R) Processor Trace format.\n\n\ | |
3052 | This format may not be available on all processors."), | |
3053 | &record_btrace_cmdlist); | |
3054 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3055 | ||
67b5c0c1 MM |
3056 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3057 | _("Set record options"), &set_record_btrace_cmdlist, | |
3058 | "set record btrace ", 0, &set_record_cmdlist); | |
3059 | ||
3060 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3061 | _("Show record options"), &show_record_btrace_cmdlist, | |
3062 | "show record btrace ", 0, &show_record_cmdlist); | |
3063 | ||
3064 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3065 | replay_memory_access_types, &replay_memory_access, _("\ | |
3066 | Set what memory accesses are allowed during replay."), _("\ | |
3067 | Show what memory accesses are allowed during replay."), | |
3068 | _("Default is READ-ONLY.\n\n\ | |
3069 | The btrace record target does not trace data.\n\ | |
3070 | The memory therefore corresponds to the live target and not \ | |
3071 | to the current replay position.\n\n\ | |
3072 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3073 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3074 | replay."), | |
3075 | NULL, cmd_show_replay_memory_access, | |
3076 | &set_record_btrace_cmdlist, | |
3077 | &show_record_btrace_cmdlist); | |
3078 | ||
d33501a5 MM |
3079 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3080 | _("Set record btrace bts options"), | |
3081 | &set_record_btrace_bts_cmdlist, | |
3082 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3083 | ||
3084 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3085 | _("Show record btrace bts options"), | |
3086 | &show_record_btrace_bts_cmdlist, | |
3087 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3088 | ||
3089 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3090 | &record_btrace_conf.bts.size, | |
3091 | _("Set the record/replay bts buffer size."), | |
3092 | _("Show the record/replay bts buffer size."), _("\ | |
3093 | When starting recording request a trace buffer of this size. \ | |
3094 | The actual buffer size may differ from the requested size. \ | |
3095 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3096 | Bigger buffers allow longer recording but also take more time to process \ | |
3097 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3098 | The trace buffer size may not be changed while recording."), NULL, |
3099 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3100 | &set_record_btrace_bts_cmdlist, |
3101 | &show_record_btrace_bts_cmdlist); | |
3102 | ||
b20a6524 MM |
3103 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3104 | _("Set record btrace pt options"), | |
3105 | &set_record_btrace_pt_cmdlist, | |
3106 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3107 | ||
3108 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3109 | _("Show record btrace pt options"), | |
3110 | &show_record_btrace_pt_cmdlist, | |
3111 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3112 | ||
3113 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3114 | &record_btrace_conf.pt.size, | |
3115 | _("Set the record/replay pt buffer size."), | |
3116 | _("Show the record/replay pt buffer size."), _("\ | |
3117 | Bigger buffers allow longer recording but also take more time to process \ | |
3118 | the recorded execution.\n\ | |
3119 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3120 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3121 | &set_record_btrace_pt_cmdlist, | |
3122 | &show_record_btrace_pt_cmdlist); | |
3123 | ||
afedecd3 MM |
3124 | init_record_btrace_ops (); |
3125 | add_target (&record_btrace_ops); | |
0b722aec MM |
3126 | |
3127 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3128 | xcalloc, xfree); | |
d33501a5 MM |
3129 | |
3130 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3131 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3132 | } |