Commit | Line | Data |
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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
e2882c85 | 3 | Copyright (C) 2013-2018 Free Software Foundation, Inc. |
afedecd3 MM |
4 | |
5 | Contributed by Intel Corp. <markus.t.metzger@intel.com> | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "record.h" | |
c0272db5 | 24 | #include "record-btrace.h" |
afedecd3 MM |
25 | #include "gdbthread.h" |
26 | #include "target.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "disasm.h" | |
76727919 | 29 | #include "observable.h" |
afedecd3 MM |
30 | #include "cli/cli-utils.h" |
31 | #include "source.h" | |
32 | #include "ui-out.h" | |
33 | #include "symtab.h" | |
34 | #include "filenames.h" | |
1f3ef581 | 35 | #include "regcache.h" |
cecac1ab | 36 | #include "frame-unwind.h" |
0b722aec | 37 | #include "hashtab.h" |
45741a9c | 38 | #include "infrun.h" |
70ad5bff MM |
39 | #include "event-loop.h" |
40 | #include "inf-loop.h" | |
e3cfc1c7 | 41 | #include "vec.h" |
325fac50 | 42 | #include <algorithm> |
afedecd3 MM |
43 | |
44 | /* The target_ops of record-btrace. */ | |
f6ac5f3d PA |
45 | |
46 | class record_btrace_target final : public target_ops | |
47 | { | |
48 | public: | |
49 | record_btrace_target () | |
50 | { to_stratum = record_stratum; } | |
51 | ||
52 | const char *shortname () override | |
53 | { return "record-btrace"; } | |
54 | ||
55 | const char *longname () override | |
56 | { return _("Branch tracing target"); } | |
57 | ||
58 | const char *doc () override | |
59 | { return _("Collect control-flow trace and provide the execution history."); } | |
60 | ||
61 | void open (const char *, int) override; | |
62 | void close () override; | |
63 | void async (int) override; | |
64 | ||
65 | void detach (inferior *inf, int from_tty) override | |
66 | { record_detach (this, inf, from_tty); } | |
67 | ||
68 | void disconnect (const char *, int) override; | |
69 | ||
70 | void mourn_inferior () override | |
71 | { record_mourn_inferior (this); } | |
72 | ||
73 | void kill () override | |
74 | { record_kill (this); } | |
75 | ||
76 | enum record_method record_method (ptid_t ptid) override; | |
77 | ||
78 | void stop_recording () override; | |
79 | void info_record () override; | |
80 | ||
81 | void insn_history (int size, gdb_disassembly_flags flags) override; | |
82 | void insn_history_from (ULONGEST from, int size, | |
83 | gdb_disassembly_flags flags) override; | |
84 | void insn_history_range (ULONGEST begin, ULONGEST end, | |
85 | gdb_disassembly_flags flags) override; | |
86 | void call_history (int size, record_print_flags flags) override; | |
87 | void call_history_from (ULONGEST begin, int size, record_print_flags flags) | |
88 | override; | |
89 | void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) | |
90 | override; | |
91 | ||
92 | int record_is_replaying (ptid_t ptid) override; | |
93 | int record_will_replay (ptid_t ptid, int dir) override; | |
94 | void record_stop_replaying () override; | |
95 | ||
96 | enum target_xfer_status xfer_partial (enum target_object object, | |
97 | const char *annex, | |
98 | gdb_byte *readbuf, | |
99 | const gdb_byte *writebuf, | |
100 | ULONGEST offset, ULONGEST len, | |
101 | ULONGEST *xfered_len) override; | |
102 | ||
103 | int insert_breakpoint (struct gdbarch *, | |
104 | struct bp_target_info *) override; | |
105 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
106 | enum remove_bp_reason) override; | |
107 | ||
108 | void fetch_registers (struct regcache *, int) override; | |
109 | ||
110 | void store_registers (struct regcache *, int) override; | |
111 | void prepare_to_store (struct regcache *) override; | |
112 | ||
113 | const struct frame_unwind *get_unwinder () override; | |
114 | ||
115 | const struct frame_unwind *get_tailcall_unwinder () override; | |
116 | ||
117 | void commit_resume () override; | |
118 | void resume (ptid_t, int, enum gdb_signal) override; | |
119 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
120 | ||
121 | void stop (ptid_t) override; | |
122 | void update_thread_list () override; | |
123 | int thread_alive (ptid_t ptid) override; | |
124 | void goto_record_begin () override; | |
125 | void goto_record_end () override; | |
126 | void goto_record (ULONGEST insn) override; | |
127 | ||
128 | int can_execute_reverse () override; | |
129 | ||
130 | int stopped_by_sw_breakpoint () override; | |
131 | int supports_stopped_by_sw_breakpoint () override; | |
132 | ||
133 | int stopped_by_hw_breakpoint () override; | |
134 | int supports_stopped_by_hw_breakpoint () override; | |
135 | ||
136 | enum exec_direction_kind execution_direction () override; | |
137 | void prepare_to_generate_core () override; | |
138 | void done_generating_core () override; | |
139 | }; | |
140 | ||
141 | static record_btrace_target record_btrace_ops; | |
142 | ||
143 | /* Initialize the record-btrace target ops. */ | |
afedecd3 | 144 | |
76727919 TT |
145 | /* Token associated with a new-thread observer enabling branch tracing |
146 | for the new thread. */ | |
147 | static const gdb::observers::token record_btrace_thread_observer_token; | |
afedecd3 | 148 | |
67b5c0c1 MM |
149 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
150 | static const char replay_memory_access_read_only[] = "read-only"; | |
151 | static const char replay_memory_access_read_write[] = "read-write"; | |
152 | static const char *const replay_memory_access_types[] = | |
153 | { | |
154 | replay_memory_access_read_only, | |
155 | replay_memory_access_read_write, | |
156 | NULL | |
157 | }; | |
158 | ||
159 | /* The currently allowed replay memory access type. */ | |
160 | static const char *replay_memory_access = replay_memory_access_read_only; | |
161 | ||
4a4495d6 MM |
162 | /* The cpu state kinds. */ |
163 | enum record_btrace_cpu_state_kind | |
164 | { | |
165 | CS_AUTO, | |
166 | CS_NONE, | |
167 | CS_CPU | |
168 | }; | |
169 | ||
170 | /* The current cpu state. */ | |
171 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
172 | ||
173 | /* The current cpu for trace decode. */ | |
174 | static struct btrace_cpu record_btrace_cpu; | |
175 | ||
67b5c0c1 MM |
176 | /* Command lists for "set/show record btrace". */ |
177 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
178 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 179 | |
70ad5bff MM |
180 | /* The execution direction of the last resume we got. See record-full.c. */ |
181 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
182 | ||
183 | /* The async event handler for reverse/replay execution. */ | |
184 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
185 | ||
aef92902 MM |
186 | /* A flag indicating that we are currently generating a core file. */ |
187 | static int record_btrace_generating_corefile; | |
188 | ||
f4abbc16 MM |
189 | /* The current branch trace configuration. */ |
190 | static struct btrace_config record_btrace_conf; | |
191 | ||
192 | /* Command list for "record btrace". */ | |
193 | static struct cmd_list_element *record_btrace_cmdlist; | |
194 | ||
d33501a5 MM |
195 | /* Command lists for "set/show record btrace bts". */ |
196 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
197 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
198 | ||
b20a6524 MM |
199 | /* Command lists for "set/show record btrace pt". */ |
200 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
201 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
202 | ||
4a4495d6 MM |
203 | /* Command list for "set record btrace cpu". */ |
204 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
205 | ||
afedecd3 MM |
206 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
207 | ambiguities when used in if statements. */ | |
208 | ||
209 | #define DEBUG(msg, args...) \ | |
210 | do \ | |
211 | { \ | |
212 | if (record_debug != 0) \ | |
213 | fprintf_unfiltered (gdb_stdlog, \ | |
214 | "[record-btrace] " msg "\n", ##args); \ | |
215 | } \ | |
216 | while (0) | |
217 | ||
218 | ||
4a4495d6 MM |
219 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
220 | configured as auto. */ | |
221 | const struct btrace_cpu * | |
222 | record_btrace_get_cpu (void) | |
223 | { | |
224 | switch (record_btrace_cpu_state) | |
225 | { | |
226 | case CS_AUTO: | |
227 | return nullptr; | |
228 | ||
229 | case CS_NONE: | |
230 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
231 | /* Fall through. */ | |
232 | case CS_CPU: | |
233 | return &record_btrace_cpu; | |
234 | } | |
235 | ||
236 | error (_("Internal error: bad record btrace cpu state.")); | |
237 | } | |
238 | ||
afedecd3 | 239 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 240 | thread_info. |
afedecd3 MM |
241 | |
242 | Throws an error if there is no thread or no trace. This function never | |
243 | returns NULL. */ | |
244 | ||
066ce621 MM |
245 | static struct thread_info * |
246 | require_btrace_thread (void) | |
afedecd3 MM |
247 | { |
248 | struct thread_info *tp; | |
afedecd3 MM |
249 | |
250 | DEBUG ("require"); | |
251 | ||
252 | tp = find_thread_ptid (inferior_ptid); | |
253 | if (tp == NULL) | |
254 | error (_("No thread.")); | |
255 | ||
cd4007e4 MM |
256 | validate_registers_access (); |
257 | ||
4a4495d6 | 258 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 259 | |
6e07b1d2 | 260 | if (btrace_is_empty (tp)) |
afedecd3 MM |
261 | error (_("No trace.")); |
262 | ||
066ce621 MM |
263 | return tp; |
264 | } | |
265 | ||
266 | /* Update the branch trace for the current thread and return a pointer to its | |
267 | branch trace information struct. | |
268 | ||
269 | Throws an error if there is no thread or no trace. This function never | |
270 | returns NULL. */ | |
271 | ||
272 | static struct btrace_thread_info * | |
273 | require_btrace (void) | |
274 | { | |
275 | struct thread_info *tp; | |
276 | ||
277 | tp = require_btrace_thread (); | |
278 | ||
279 | return &tp->btrace; | |
afedecd3 MM |
280 | } |
281 | ||
282 | /* Enable branch tracing for one thread. Warn on errors. */ | |
283 | ||
284 | static void | |
285 | record_btrace_enable_warn (struct thread_info *tp) | |
286 | { | |
492d29ea PA |
287 | TRY |
288 | { | |
289 | btrace_enable (tp, &record_btrace_conf); | |
290 | } | |
291 | CATCH (error, RETURN_MASK_ERROR) | |
292 | { | |
293 | warning ("%s", error.message); | |
294 | } | |
295 | END_CATCH | |
afedecd3 MM |
296 | } |
297 | ||
afedecd3 MM |
298 | /* Enable automatic tracing of new threads. */ |
299 | ||
300 | static void | |
301 | record_btrace_auto_enable (void) | |
302 | { | |
303 | DEBUG ("attach thread observer"); | |
304 | ||
76727919 TT |
305 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
306 | record_btrace_thread_observer_token); | |
afedecd3 MM |
307 | } |
308 | ||
309 | /* Disable automatic tracing of new threads. */ | |
310 | ||
311 | static void | |
312 | record_btrace_auto_disable (void) | |
313 | { | |
afedecd3 MM |
314 | DEBUG ("detach thread observer"); |
315 | ||
76727919 | 316 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
317 | } |
318 | ||
70ad5bff MM |
319 | /* The record-btrace async event handler function. */ |
320 | ||
321 | static void | |
322 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
323 | { | |
324 | inferior_event_handler (INF_REG_EVENT, NULL); | |
325 | } | |
326 | ||
c0272db5 TW |
327 | /* See record-btrace.h. */ |
328 | ||
329 | void | |
330 | record_btrace_push_target (void) | |
331 | { | |
332 | const char *format; | |
333 | ||
334 | record_btrace_auto_enable (); | |
335 | ||
336 | push_target (&record_btrace_ops); | |
337 | ||
338 | record_btrace_async_inferior_event_handler | |
339 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
340 | NULL); | |
341 | record_btrace_generating_corefile = 0; | |
342 | ||
343 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 344 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
345 | } |
346 | ||
228f1508 SM |
347 | /* Disable btrace on a set of threads on scope exit. */ |
348 | ||
349 | struct scoped_btrace_disable | |
350 | { | |
351 | scoped_btrace_disable () = default; | |
352 | ||
353 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
354 | ||
355 | ~scoped_btrace_disable () | |
356 | { | |
357 | for (thread_info *tp : m_threads) | |
358 | btrace_disable (tp); | |
359 | } | |
360 | ||
361 | void add_thread (thread_info *thread) | |
362 | { | |
363 | m_threads.push_front (thread); | |
364 | } | |
365 | ||
366 | void discard () | |
367 | { | |
368 | m_threads.clear (); | |
369 | } | |
370 | ||
371 | private: | |
372 | std::forward_list<thread_info *> m_threads; | |
373 | }; | |
374 | ||
f6ac5f3d | 375 | /* The open method of target record-btrace. */ |
afedecd3 | 376 | |
f6ac5f3d PA |
377 | void |
378 | record_btrace_target::open (const char *args, int from_tty) | |
afedecd3 | 379 | { |
228f1508 SM |
380 | /* If we fail to enable btrace for one thread, disable it for the threads for |
381 | which it was successfully enabled. */ | |
382 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
383 | struct thread_info *tp; |
384 | ||
385 | DEBUG ("open"); | |
386 | ||
8213266a | 387 | record_preopen (); |
afedecd3 MM |
388 | |
389 | if (!target_has_execution) | |
390 | error (_("The program is not being run.")); | |
391 | ||
034f788c | 392 | ALL_NON_EXITED_THREADS (tp) |
5d5658a1 | 393 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 394 | { |
f4abbc16 | 395 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 396 | |
228f1508 | 397 | btrace_disable.add_thread (tp); |
afedecd3 MM |
398 | } |
399 | ||
c0272db5 | 400 | record_btrace_push_target (); |
afedecd3 | 401 | |
228f1508 | 402 | btrace_disable.discard (); |
afedecd3 MM |
403 | } |
404 | ||
f6ac5f3d | 405 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 406 | |
f6ac5f3d PA |
407 | void |
408 | record_btrace_target::stop_recording () | |
afedecd3 MM |
409 | { |
410 | struct thread_info *tp; | |
411 | ||
412 | DEBUG ("stop recording"); | |
413 | ||
414 | record_btrace_auto_disable (); | |
415 | ||
034f788c | 416 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
417 | if (tp->btrace.target != NULL) |
418 | btrace_disable (tp); | |
419 | } | |
420 | ||
f6ac5f3d | 421 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 422 | |
f6ac5f3d PA |
423 | void |
424 | record_btrace_target::disconnect (const char *args, | |
425 | int from_tty) | |
c0272db5 | 426 | { |
f6ac5f3d | 427 | struct target_ops *beneath = this->beneath; |
c0272db5 TW |
428 | |
429 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 430 | unpush_target (this); |
c0272db5 TW |
431 | |
432 | /* Forward disconnect. */ | |
f6ac5f3d | 433 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
434 | } |
435 | ||
f6ac5f3d | 436 | /* The close method of target record-btrace. */ |
afedecd3 | 437 | |
f6ac5f3d PA |
438 | void |
439 | record_btrace_target::close () | |
afedecd3 | 440 | { |
568e808b MM |
441 | struct thread_info *tp; |
442 | ||
70ad5bff MM |
443 | if (record_btrace_async_inferior_event_handler != NULL) |
444 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
445 | ||
99c819ee MM |
446 | /* Make sure automatic recording gets disabled even if we did not stop |
447 | recording before closing the record-btrace target. */ | |
448 | record_btrace_auto_disable (); | |
449 | ||
568e808b MM |
450 | /* We should have already stopped recording. |
451 | Tear down btrace in case we have not. */ | |
034f788c | 452 | ALL_NON_EXITED_THREADS (tp) |
568e808b | 453 | btrace_teardown (tp); |
afedecd3 MM |
454 | } |
455 | ||
f6ac5f3d | 456 | /* The async method of target record-btrace. */ |
b7d2e916 | 457 | |
f6ac5f3d PA |
458 | void |
459 | record_btrace_target::async (int enable) | |
b7d2e916 | 460 | { |
6a3753b3 | 461 | if (enable) |
b7d2e916 PA |
462 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
463 | else | |
464 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
465 | ||
f6ac5f3d | 466 | this->beneath->async (enable); |
b7d2e916 PA |
467 | } |
468 | ||
d33501a5 MM |
469 | /* Adjusts the size and returns a human readable size suffix. */ |
470 | ||
471 | static const char * | |
472 | record_btrace_adjust_size (unsigned int *size) | |
473 | { | |
474 | unsigned int sz; | |
475 | ||
476 | sz = *size; | |
477 | ||
478 | if ((sz & ((1u << 30) - 1)) == 0) | |
479 | { | |
480 | *size = sz >> 30; | |
481 | return "GB"; | |
482 | } | |
483 | else if ((sz & ((1u << 20) - 1)) == 0) | |
484 | { | |
485 | *size = sz >> 20; | |
486 | return "MB"; | |
487 | } | |
488 | else if ((sz & ((1u << 10) - 1)) == 0) | |
489 | { | |
490 | *size = sz >> 10; | |
491 | return "kB"; | |
492 | } | |
493 | else | |
494 | return ""; | |
495 | } | |
496 | ||
497 | /* Print a BTS configuration. */ | |
498 | ||
499 | static void | |
500 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
501 | { | |
502 | const char *suffix; | |
503 | unsigned int size; | |
504 | ||
505 | size = conf->size; | |
506 | if (size > 0) | |
507 | { | |
508 | suffix = record_btrace_adjust_size (&size); | |
509 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
510 | } | |
511 | } | |
512 | ||
bc504a31 | 513 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
514 | |
515 | static void | |
516 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
517 | { | |
518 | const char *suffix; | |
519 | unsigned int size; | |
520 | ||
521 | size = conf->size; | |
522 | if (size > 0) | |
523 | { | |
524 | suffix = record_btrace_adjust_size (&size); | |
525 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
526 | } | |
527 | } | |
528 | ||
d33501a5 MM |
529 | /* Print a branch tracing configuration. */ |
530 | ||
531 | static void | |
532 | record_btrace_print_conf (const struct btrace_config *conf) | |
533 | { | |
534 | printf_unfiltered (_("Recording format: %s.\n"), | |
535 | btrace_format_string (conf->format)); | |
536 | ||
537 | switch (conf->format) | |
538 | { | |
539 | case BTRACE_FORMAT_NONE: | |
540 | return; | |
541 | ||
542 | case BTRACE_FORMAT_BTS: | |
543 | record_btrace_print_bts_conf (&conf->bts); | |
544 | return; | |
b20a6524 MM |
545 | |
546 | case BTRACE_FORMAT_PT: | |
547 | record_btrace_print_pt_conf (&conf->pt); | |
548 | return; | |
d33501a5 MM |
549 | } |
550 | ||
551 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
552 | } | |
553 | ||
f6ac5f3d | 554 | /* The info_record method of target record-btrace. */ |
afedecd3 | 555 | |
f6ac5f3d PA |
556 | void |
557 | record_btrace_target::info_record () | |
afedecd3 MM |
558 | { |
559 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 560 | const struct btrace_config *conf; |
afedecd3 | 561 | struct thread_info *tp; |
31fd9caa | 562 | unsigned int insns, calls, gaps; |
afedecd3 MM |
563 | |
564 | DEBUG ("info"); | |
565 | ||
566 | tp = find_thread_ptid (inferior_ptid); | |
567 | if (tp == NULL) | |
568 | error (_("No thread.")); | |
569 | ||
cd4007e4 MM |
570 | validate_registers_access (); |
571 | ||
f4abbc16 MM |
572 | btinfo = &tp->btrace; |
573 | ||
f6ac5f3d | 574 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 575 | if (conf != NULL) |
d33501a5 | 576 | record_btrace_print_conf (conf); |
f4abbc16 | 577 | |
4a4495d6 | 578 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 579 | |
23a7fe75 MM |
580 | insns = 0; |
581 | calls = 0; | |
31fd9caa | 582 | gaps = 0; |
23a7fe75 | 583 | |
6e07b1d2 | 584 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
585 | { |
586 | struct btrace_call_iterator call; | |
587 | struct btrace_insn_iterator insn; | |
588 | ||
589 | btrace_call_end (&call, btinfo); | |
590 | btrace_call_prev (&call, 1); | |
5de9129b | 591 | calls = btrace_call_number (&call); |
23a7fe75 MM |
592 | |
593 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 594 | insns = btrace_insn_number (&insn); |
31fd9caa | 595 | |
69090cee TW |
596 | /* If the last instruction is not a gap, it is the current instruction |
597 | that is not actually part of the record. */ | |
598 | if (btrace_insn_get (&insn) != NULL) | |
599 | insns -= 1; | |
31fd9caa MM |
600 | |
601 | gaps = btinfo->ngaps; | |
23a7fe75 | 602 | } |
afedecd3 | 603 | |
31fd9caa | 604 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 PA |
605 | "for thread %s (%s).\n"), insns, calls, gaps, |
606 | print_thread_id (tp), target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
607 | |
608 | if (btrace_is_replaying (tp)) | |
609 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
610 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
611 | } |
612 | ||
31fd9caa MM |
613 | /* Print a decode error. */ |
614 | ||
615 | static void | |
616 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
617 | enum btrace_format format) | |
618 | { | |
508352a9 | 619 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 620 | |
112e8700 | 621 | uiout->text (_("[")); |
508352a9 TW |
622 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
623 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 624 | { |
112e8700 SM |
625 | uiout->text (_("decode error (")); |
626 | uiout->field_int ("errcode", errcode); | |
627 | uiout->text (_("): ")); | |
31fd9caa | 628 | } |
112e8700 SM |
629 | uiout->text (errstr); |
630 | uiout->text (_("]\n")); | |
31fd9caa MM |
631 | } |
632 | ||
afedecd3 MM |
633 | /* Print an unsigned int. */ |
634 | ||
635 | static void | |
636 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
637 | { | |
112e8700 | 638 | uiout->field_fmt (fld, "%u", val); |
afedecd3 MM |
639 | } |
640 | ||
f94cc897 MM |
641 | /* A range of source lines. */ |
642 | ||
643 | struct btrace_line_range | |
644 | { | |
645 | /* The symtab this line is from. */ | |
646 | struct symtab *symtab; | |
647 | ||
648 | /* The first line (inclusive). */ | |
649 | int begin; | |
650 | ||
651 | /* The last line (exclusive). */ | |
652 | int end; | |
653 | }; | |
654 | ||
655 | /* Construct a line range. */ | |
656 | ||
657 | static struct btrace_line_range | |
658 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
659 | { | |
660 | struct btrace_line_range range; | |
661 | ||
662 | range.symtab = symtab; | |
663 | range.begin = begin; | |
664 | range.end = end; | |
665 | ||
666 | return range; | |
667 | } | |
668 | ||
669 | /* Add a line to a line range. */ | |
670 | ||
671 | static struct btrace_line_range | |
672 | btrace_line_range_add (struct btrace_line_range range, int line) | |
673 | { | |
674 | if (range.end <= range.begin) | |
675 | { | |
676 | /* This is the first entry. */ | |
677 | range.begin = line; | |
678 | range.end = line + 1; | |
679 | } | |
680 | else if (line < range.begin) | |
681 | range.begin = line; | |
682 | else if (range.end < line) | |
683 | range.end = line; | |
684 | ||
685 | return range; | |
686 | } | |
687 | ||
688 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
689 | ||
690 | static int | |
691 | btrace_line_range_is_empty (struct btrace_line_range range) | |
692 | { | |
693 | return range.end <= range.begin; | |
694 | } | |
695 | ||
696 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
697 | ||
698 | static int | |
699 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
700 | struct btrace_line_range rhs) | |
701 | { | |
702 | return ((lhs.symtab == rhs.symtab) | |
703 | && (lhs.begin <= rhs.begin) | |
704 | && (rhs.end <= lhs.end)); | |
705 | } | |
706 | ||
707 | /* Find the line range associated with PC. */ | |
708 | ||
709 | static struct btrace_line_range | |
710 | btrace_find_line_range (CORE_ADDR pc) | |
711 | { | |
712 | struct btrace_line_range range; | |
713 | struct linetable_entry *lines; | |
714 | struct linetable *ltable; | |
715 | struct symtab *symtab; | |
716 | int nlines, i; | |
717 | ||
718 | symtab = find_pc_line_symtab (pc); | |
719 | if (symtab == NULL) | |
720 | return btrace_mk_line_range (NULL, 0, 0); | |
721 | ||
722 | ltable = SYMTAB_LINETABLE (symtab); | |
723 | if (ltable == NULL) | |
724 | return btrace_mk_line_range (symtab, 0, 0); | |
725 | ||
726 | nlines = ltable->nitems; | |
727 | lines = ltable->item; | |
728 | if (nlines <= 0) | |
729 | return btrace_mk_line_range (symtab, 0, 0); | |
730 | ||
731 | range = btrace_mk_line_range (symtab, 0, 0); | |
732 | for (i = 0; i < nlines - 1; i++) | |
733 | { | |
734 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
735 | range = btrace_line_range_add (range, lines[i].line); | |
736 | } | |
737 | ||
738 | return range; | |
739 | } | |
740 | ||
741 | /* Print source lines in LINES to UIOUT. | |
742 | ||
743 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
744 | instructions corresponding to that source line. When printing a new source | |
745 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
746 | the new source line. If the source line range in LINES is not empty, this | |
747 | function will leave the cleanup chain for the last printed source line open | |
748 | so instructions can be added to it. */ | |
749 | ||
750 | static void | |
751 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
752 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
753 | gdb::optional<ui_out_emit_list> *asm_list, | |
754 | gdb_disassembly_flags flags) | |
f94cc897 | 755 | { |
8d297bbf | 756 | print_source_lines_flags psl_flags; |
f94cc897 | 757 | |
f94cc897 MM |
758 | if (flags & DISASSEMBLY_FILENAME) |
759 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
760 | ||
7ea78b59 | 761 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 762 | { |
7ea78b59 | 763 | asm_list->reset (); |
f94cc897 | 764 | |
7ea78b59 | 765 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
766 | |
767 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
768 | ||
7ea78b59 | 769 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
770 | } |
771 | } | |
772 | ||
afedecd3 MM |
773 | /* Disassemble a section of the recorded instruction trace. */ |
774 | ||
775 | static void | |
23a7fe75 | 776 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 777 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 778 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
779 | const struct btrace_insn_iterator *end, |
780 | gdb_disassembly_flags flags) | |
afedecd3 | 781 | { |
9a24775b PA |
782 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
783 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 784 | |
f94cc897 MM |
785 | flags |= DISASSEMBLY_SPECULATIVE; |
786 | ||
7ea78b59 SM |
787 | struct gdbarch *gdbarch = target_gdbarch (); |
788 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 789 | |
7ea78b59 | 790 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 791 | |
7ea78b59 SM |
792 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
793 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 794 | |
8b172ce7 PA |
795 | gdb_pretty_print_disassembler disasm (gdbarch); |
796 | ||
7ea78b59 SM |
797 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
798 | btrace_insn_next (&it, 1)) | |
afedecd3 | 799 | { |
23a7fe75 MM |
800 | const struct btrace_insn *insn; |
801 | ||
802 | insn = btrace_insn_get (&it); | |
803 | ||
31fd9caa MM |
804 | /* A NULL instruction indicates a gap in the trace. */ |
805 | if (insn == NULL) | |
806 | { | |
807 | const struct btrace_config *conf; | |
808 | ||
809 | conf = btrace_conf (btinfo); | |
afedecd3 | 810 | |
31fd9caa MM |
811 | /* We have trace so we must have a configuration. */ |
812 | gdb_assert (conf != NULL); | |
813 | ||
69090cee TW |
814 | uiout->field_fmt ("insn-number", "%u", |
815 | btrace_insn_number (&it)); | |
816 | uiout->text ("\t"); | |
817 | ||
818 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
819 | conf->format); |
820 | } | |
821 | else | |
822 | { | |
f94cc897 | 823 | struct disasm_insn dinsn; |
da8c46d2 | 824 | |
f94cc897 | 825 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 826 | { |
f94cc897 MM |
827 | struct btrace_line_range lines; |
828 | ||
829 | lines = btrace_find_line_range (insn->pc); | |
830 | if (!btrace_line_range_is_empty (lines) | |
831 | && !btrace_line_range_contains_range (last_lines, lines)) | |
832 | { | |
7ea78b59 SM |
833 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
834 | flags); | |
f94cc897 MM |
835 | last_lines = lines; |
836 | } | |
7ea78b59 | 837 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 838 | { |
7ea78b59 SM |
839 | gdb_assert (!asm_list.has_value ()); |
840 | ||
841 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
842 | ||
f94cc897 | 843 | /* No source information. */ |
7ea78b59 | 844 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
845 | } |
846 | ||
7ea78b59 SM |
847 | gdb_assert (src_and_asm_tuple.has_value ()); |
848 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 849 | } |
da8c46d2 | 850 | |
f94cc897 MM |
851 | memset (&dinsn, 0, sizeof (dinsn)); |
852 | dinsn.number = btrace_insn_number (&it); | |
853 | dinsn.addr = insn->pc; | |
31fd9caa | 854 | |
da8c46d2 | 855 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 856 | dinsn.is_speculative = 1; |
da8c46d2 | 857 | |
8b172ce7 | 858 | disasm.pretty_print_insn (uiout, &dinsn, flags); |
31fd9caa | 859 | } |
afedecd3 MM |
860 | } |
861 | } | |
862 | ||
f6ac5f3d | 863 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 864 | |
f6ac5f3d PA |
865 | void |
866 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
867 | { |
868 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
869 | struct btrace_insn_history *history; |
870 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 871 | struct ui_out *uiout; |
23a7fe75 | 872 | unsigned int context, covered; |
afedecd3 MM |
873 | |
874 | uiout = current_uiout; | |
2e783024 | 875 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 876 | context = abs (size); |
afedecd3 MM |
877 | if (context == 0) |
878 | error (_("Bad record instruction-history-size.")); | |
879 | ||
23a7fe75 MM |
880 | btinfo = require_btrace (); |
881 | history = btinfo->insn_history; | |
882 | if (history == NULL) | |
afedecd3 | 883 | { |
07bbe694 | 884 | struct btrace_insn_iterator *replay; |
afedecd3 | 885 | |
9a24775b | 886 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 887 | |
07bbe694 MM |
888 | /* If we're replaying, we start at the replay position. Otherwise, we |
889 | start at the tail of the trace. */ | |
890 | replay = btinfo->replay; | |
891 | if (replay != NULL) | |
892 | begin = *replay; | |
893 | else | |
894 | btrace_insn_end (&begin, btinfo); | |
895 | ||
896 | /* We start from here and expand in the requested direction. Then we | |
897 | expand in the other direction, as well, to fill up any remaining | |
898 | context. */ | |
899 | end = begin; | |
900 | if (size < 0) | |
901 | { | |
902 | /* We want the current position covered, as well. */ | |
903 | covered = btrace_insn_next (&end, 1); | |
904 | covered += btrace_insn_prev (&begin, context - covered); | |
905 | covered += btrace_insn_next (&end, context - covered); | |
906 | } | |
907 | else | |
908 | { | |
909 | covered = btrace_insn_next (&end, context); | |
910 | covered += btrace_insn_prev (&begin, context - covered); | |
911 | } | |
afedecd3 MM |
912 | } |
913 | else | |
914 | { | |
23a7fe75 MM |
915 | begin = history->begin; |
916 | end = history->end; | |
afedecd3 | 917 | |
9a24775b | 918 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 919 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 920 | |
23a7fe75 MM |
921 | if (size < 0) |
922 | { | |
923 | end = begin; | |
924 | covered = btrace_insn_prev (&begin, context); | |
925 | } | |
926 | else | |
927 | { | |
928 | begin = end; | |
929 | covered = btrace_insn_next (&end, context); | |
930 | } | |
afedecd3 MM |
931 | } |
932 | ||
23a7fe75 | 933 | if (covered > 0) |
31fd9caa | 934 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
935 | else |
936 | { | |
937 | if (size < 0) | |
938 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
939 | else | |
940 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
941 | } | |
afedecd3 | 942 | |
23a7fe75 | 943 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
944 | } |
945 | ||
f6ac5f3d | 946 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 947 | |
f6ac5f3d PA |
948 | void |
949 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
950 | gdb_disassembly_flags flags) | |
afedecd3 MM |
951 | { |
952 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 953 | struct btrace_insn_iterator begin, end; |
afedecd3 | 954 | struct ui_out *uiout; |
23a7fe75 MM |
955 | unsigned int low, high; |
956 | int found; | |
afedecd3 MM |
957 | |
958 | uiout = current_uiout; | |
2e783024 | 959 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
960 | low = from; |
961 | high = to; | |
afedecd3 | 962 | |
9a24775b | 963 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
964 | |
965 | /* Check for wrap-arounds. */ | |
23a7fe75 | 966 | if (low != from || high != to) |
afedecd3 MM |
967 | error (_("Bad range.")); |
968 | ||
0688d04e | 969 | if (high < low) |
afedecd3 MM |
970 | error (_("Bad range.")); |
971 | ||
23a7fe75 | 972 | btinfo = require_btrace (); |
afedecd3 | 973 | |
23a7fe75 MM |
974 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
975 | if (found == 0) | |
976 | error (_("Range out of bounds.")); | |
afedecd3 | 977 | |
23a7fe75 MM |
978 | found = btrace_find_insn_by_number (&end, btinfo, high); |
979 | if (found == 0) | |
0688d04e MM |
980 | { |
981 | /* Silently truncate the range. */ | |
982 | btrace_insn_end (&end, btinfo); | |
983 | } | |
984 | else | |
985 | { | |
986 | /* We want both begin and end to be inclusive. */ | |
987 | btrace_insn_next (&end, 1); | |
988 | } | |
afedecd3 | 989 | |
31fd9caa | 990 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 991 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
992 | } |
993 | ||
f6ac5f3d | 994 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 995 | |
f6ac5f3d PA |
996 | void |
997 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
998 | gdb_disassembly_flags flags) | |
afedecd3 MM |
999 | { |
1000 | ULONGEST begin, end, context; | |
1001 | ||
1002 | context = abs (size); | |
0688d04e MM |
1003 | if (context == 0) |
1004 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
1005 | |
1006 | if (size < 0) | |
1007 | { | |
1008 | end = from; | |
1009 | ||
1010 | if (from < context) | |
1011 | begin = 0; | |
1012 | else | |
0688d04e | 1013 | begin = from - context + 1; |
afedecd3 MM |
1014 | } |
1015 | else | |
1016 | { | |
1017 | begin = from; | |
0688d04e | 1018 | end = from + context - 1; |
afedecd3 MM |
1019 | |
1020 | /* Check for wrap-around. */ | |
1021 | if (end < begin) | |
1022 | end = ULONGEST_MAX; | |
1023 | } | |
1024 | ||
f6ac5f3d | 1025 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1026 | } |
1027 | ||
1028 | /* Print the instruction number range for a function call history line. */ | |
1029 | ||
1030 | static void | |
23a7fe75 MM |
1031 | btrace_call_history_insn_range (struct ui_out *uiout, |
1032 | const struct btrace_function *bfun) | |
afedecd3 | 1033 | { |
7acbe133 MM |
1034 | unsigned int begin, end, size; |
1035 | ||
0860c437 | 1036 | size = bfun->insn.size (); |
7acbe133 | 1037 | gdb_assert (size > 0); |
afedecd3 | 1038 | |
23a7fe75 | 1039 | begin = bfun->insn_offset; |
7acbe133 | 1040 | end = begin + size - 1; |
afedecd3 | 1041 | |
23a7fe75 | 1042 | ui_out_field_uint (uiout, "insn begin", begin); |
112e8700 | 1043 | uiout->text (","); |
23a7fe75 | 1044 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
1045 | } |
1046 | ||
ce0dfbea MM |
1047 | /* Compute the lowest and highest source line for the instructions in BFUN |
1048 | and return them in PBEGIN and PEND. | |
1049 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1050 | result from inlining or macro expansion. */ | |
1051 | ||
1052 | static void | |
1053 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1054 | int *pbegin, int *pend) | |
1055 | { | |
ce0dfbea MM |
1056 | struct symtab *symtab; |
1057 | struct symbol *sym; | |
ce0dfbea MM |
1058 | int begin, end; |
1059 | ||
1060 | begin = INT_MAX; | |
1061 | end = INT_MIN; | |
1062 | ||
1063 | sym = bfun->sym; | |
1064 | if (sym == NULL) | |
1065 | goto out; | |
1066 | ||
1067 | symtab = symbol_symtab (sym); | |
1068 | ||
0860c437 | 1069 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1070 | { |
1071 | struct symtab_and_line sal; | |
1072 | ||
0860c437 | 1073 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1074 | if (sal.symtab != symtab || sal.line == 0) |
1075 | continue; | |
1076 | ||
325fac50 PA |
1077 | begin = std::min (begin, sal.line); |
1078 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1079 | } |
1080 | ||
1081 | out: | |
1082 | *pbegin = begin; | |
1083 | *pend = end; | |
1084 | } | |
1085 | ||
afedecd3 MM |
1086 | /* Print the source line information for a function call history line. */ |
1087 | ||
1088 | static void | |
23a7fe75 MM |
1089 | btrace_call_history_src_line (struct ui_out *uiout, |
1090 | const struct btrace_function *bfun) | |
afedecd3 MM |
1091 | { |
1092 | struct symbol *sym; | |
23a7fe75 | 1093 | int begin, end; |
afedecd3 MM |
1094 | |
1095 | sym = bfun->sym; | |
1096 | if (sym == NULL) | |
1097 | return; | |
1098 | ||
112e8700 | 1099 | uiout->field_string ("file", |
08be3fe3 | 1100 | symtab_to_filename_for_display (symbol_symtab (sym))); |
afedecd3 | 1101 | |
ce0dfbea | 1102 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1103 | if (end < begin) |
afedecd3 MM |
1104 | return; |
1105 | ||
112e8700 SM |
1106 | uiout->text (":"); |
1107 | uiout->field_int ("min line", begin); | |
afedecd3 | 1108 | |
23a7fe75 | 1109 | if (end == begin) |
afedecd3 MM |
1110 | return; |
1111 | ||
112e8700 SM |
1112 | uiout->text (","); |
1113 | uiout->field_int ("max line", end); | |
afedecd3 MM |
1114 | } |
1115 | ||
0b722aec MM |
1116 | /* Get the name of a branch trace function. */ |
1117 | ||
1118 | static const char * | |
1119 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1120 | { | |
1121 | struct minimal_symbol *msym; | |
1122 | struct symbol *sym; | |
1123 | ||
1124 | if (bfun == NULL) | |
1125 | return "??"; | |
1126 | ||
1127 | msym = bfun->msym; | |
1128 | sym = bfun->sym; | |
1129 | ||
1130 | if (sym != NULL) | |
1131 | return SYMBOL_PRINT_NAME (sym); | |
1132 | else if (msym != NULL) | |
efd66ac6 | 1133 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1134 | else |
1135 | return "??"; | |
1136 | } | |
1137 | ||
afedecd3 MM |
1138 | /* Disassemble a section of the recorded function trace. */ |
1139 | ||
1140 | static void | |
23a7fe75 | 1141 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1142 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1143 | const struct btrace_call_iterator *begin, |
1144 | const struct btrace_call_iterator *end, | |
8d297bbf | 1145 | int int_flags) |
afedecd3 | 1146 | { |
23a7fe75 | 1147 | struct btrace_call_iterator it; |
8d297bbf | 1148 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1149 | |
8d297bbf | 1150 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1151 | btrace_call_number (end)); |
afedecd3 | 1152 | |
23a7fe75 | 1153 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1154 | { |
23a7fe75 MM |
1155 | const struct btrace_function *bfun; |
1156 | struct minimal_symbol *msym; | |
1157 | struct symbol *sym; | |
1158 | ||
1159 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1160 | sym = bfun->sym; |
0b722aec | 1161 | msym = bfun->msym; |
23a7fe75 | 1162 | |
afedecd3 | 1163 | /* Print the function index. */ |
23a7fe75 | 1164 | ui_out_field_uint (uiout, "index", bfun->number); |
112e8700 | 1165 | uiout->text ("\t"); |
afedecd3 | 1166 | |
31fd9caa MM |
1167 | /* Indicate gaps in the trace. */ |
1168 | if (bfun->errcode != 0) | |
1169 | { | |
1170 | const struct btrace_config *conf; | |
1171 | ||
1172 | conf = btrace_conf (btinfo); | |
1173 | ||
1174 | /* We have trace so we must have a configuration. */ | |
1175 | gdb_assert (conf != NULL); | |
1176 | ||
1177 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1178 | ||
1179 | continue; | |
1180 | } | |
1181 | ||
8710b709 MM |
1182 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1183 | { | |
1184 | int level = bfun->level + btinfo->level, i; | |
1185 | ||
1186 | for (i = 0; i < level; ++i) | |
112e8700 | 1187 | uiout->text (" "); |
8710b709 MM |
1188 | } |
1189 | ||
1190 | if (sym != NULL) | |
112e8700 | 1191 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym)); |
8710b709 | 1192 | else if (msym != NULL) |
112e8700 SM |
1193 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym)); |
1194 | else if (!uiout->is_mi_like_p ()) | |
1195 | uiout->field_string ("function", "??"); | |
8710b709 | 1196 | |
1e038f67 | 1197 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1198 | { |
112e8700 | 1199 | uiout->text (_("\tinst ")); |
23a7fe75 | 1200 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1201 | } |
1202 | ||
1e038f67 | 1203 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1204 | { |
112e8700 | 1205 | uiout->text (_("\tat ")); |
23a7fe75 | 1206 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1207 | } |
1208 | ||
112e8700 | 1209 | uiout->text ("\n"); |
afedecd3 MM |
1210 | } |
1211 | } | |
1212 | ||
f6ac5f3d | 1213 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1214 | |
f6ac5f3d PA |
1215 | void |
1216 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1217 | { |
1218 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1219 | struct btrace_call_history *history; |
1220 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1221 | struct ui_out *uiout; |
23a7fe75 | 1222 | unsigned int context, covered; |
afedecd3 MM |
1223 | |
1224 | uiout = current_uiout; | |
2e783024 | 1225 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1226 | context = abs (size); |
afedecd3 MM |
1227 | if (context == 0) |
1228 | error (_("Bad record function-call-history-size.")); | |
1229 | ||
23a7fe75 MM |
1230 | btinfo = require_btrace (); |
1231 | history = btinfo->call_history; | |
1232 | if (history == NULL) | |
afedecd3 | 1233 | { |
07bbe694 | 1234 | struct btrace_insn_iterator *replay; |
afedecd3 | 1235 | |
0cb7c7b0 | 1236 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1237 | |
07bbe694 MM |
1238 | /* If we're replaying, we start at the replay position. Otherwise, we |
1239 | start at the tail of the trace. */ | |
1240 | replay = btinfo->replay; | |
1241 | if (replay != NULL) | |
1242 | { | |
07bbe694 | 1243 | begin.btinfo = btinfo; |
a0f1b963 | 1244 | begin.index = replay->call_index; |
07bbe694 MM |
1245 | } |
1246 | else | |
1247 | btrace_call_end (&begin, btinfo); | |
1248 | ||
1249 | /* We start from here and expand in the requested direction. Then we | |
1250 | expand in the other direction, as well, to fill up any remaining | |
1251 | context. */ | |
1252 | end = begin; | |
1253 | if (size < 0) | |
1254 | { | |
1255 | /* We want the current position covered, as well. */ | |
1256 | covered = btrace_call_next (&end, 1); | |
1257 | covered += btrace_call_prev (&begin, context - covered); | |
1258 | covered += btrace_call_next (&end, context - covered); | |
1259 | } | |
1260 | else | |
1261 | { | |
1262 | covered = btrace_call_next (&end, context); | |
1263 | covered += btrace_call_prev (&begin, context- covered); | |
1264 | } | |
afedecd3 MM |
1265 | } |
1266 | else | |
1267 | { | |
23a7fe75 MM |
1268 | begin = history->begin; |
1269 | end = history->end; | |
afedecd3 | 1270 | |
0cb7c7b0 | 1271 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1272 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1273 | |
23a7fe75 MM |
1274 | if (size < 0) |
1275 | { | |
1276 | end = begin; | |
1277 | covered = btrace_call_prev (&begin, context); | |
1278 | } | |
1279 | else | |
1280 | { | |
1281 | begin = end; | |
1282 | covered = btrace_call_next (&end, context); | |
1283 | } | |
afedecd3 MM |
1284 | } |
1285 | ||
23a7fe75 | 1286 | if (covered > 0) |
8710b709 | 1287 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1288 | else |
1289 | { | |
1290 | if (size < 0) | |
1291 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1292 | else | |
1293 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1294 | } | |
afedecd3 | 1295 | |
23a7fe75 | 1296 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1297 | } |
1298 | ||
f6ac5f3d | 1299 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1300 | |
f6ac5f3d PA |
1301 | void |
1302 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1303 | record_print_flags flags) | |
afedecd3 MM |
1304 | { |
1305 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1306 | struct btrace_call_iterator begin, end; |
afedecd3 | 1307 | struct ui_out *uiout; |
23a7fe75 MM |
1308 | unsigned int low, high; |
1309 | int found; | |
afedecd3 MM |
1310 | |
1311 | uiout = current_uiout; | |
2e783024 | 1312 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1313 | low = from; |
1314 | high = to; | |
afedecd3 | 1315 | |
0cb7c7b0 | 1316 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1317 | |
1318 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1319 | if (low != from || high != to) |
afedecd3 MM |
1320 | error (_("Bad range.")); |
1321 | ||
0688d04e | 1322 | if (high < low) |
afedecd3 MM |
1323 | error (_("Bad range.")); |
1324 | ||
23a7fe75 | 1325 | btinfo = require_btrace (); |
afedecd3 | 1326 | |
23a7fe75 MM |
1327 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1328 | if (found == 0) | |
1329 | error (_("Range out of bounds.")); | |
afedecd3 | 1330 | |
23a7fe75 MM |
1331 | found = btrace_find_call_by_number (&end, btinfo, high); |
1332 | if (found == 0) | |
0688d04e MM |
1333 | { |
1334 | /* Silently truncate the range. */ | |
1335 | btrace_call_end (&end, btinfo); | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | /* We want both begin and end to be inclusive. */ | |
1340 | btrace_call_next (&end, 1); | |
1341 | } | |
afedecd3 | 1342 | |
8710b709 | 1343 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1344 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1345 | } |
1346 | ||
f6ac5f3d | 1347 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1348 | |
f6ac5f3d PA |
1349 | void |
1350 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1351 | record_print_flags flags) | |
afedecd3 MM |
1352 | { |
1353 | ULONGEST begin, end, context; | |
1354 | ||
1355 | context = abs (size); | |
0688d04e MM |
1356 | if (context == 0) |
1357 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1358 | |
1359 | if (size < 0) | |
1360 | { | |
1361 | end = from; | |
1362 | ||
1363 | if (from < context) | |
1364 | begin = 0; | |
1365 | else | |
0688d04e | 1366 | begin = from - context + 1; |
afedecd3 MM |
1367 | } |
1368 | else | |
1369 | { | |
1370 | begin = from; | |
0688d04e | 1371 | end = from + context - 1; |
afedecd3 MM |
1372 | |
1373 | /* Check for wrap-around. */ | |
1374 | if (end < begin) | |
1375 | end = ULONGEST_MAX; | |
1376 | } | |
1377 | ||
f6ac5f3d | 1378 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1379 | } |
1380 | ||
f6ac5f3d | 1381 | /* The record_method method of target record-btrace. */ |
b158a20f | 1382 | |
f6ac5f3d PA |
1383 | enum record_method |
1384 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1385 | { |
b158a20f TW |
1386 | struct thread_info * const tp = find_thread_ptid (ptid); |
1387 | ||
1388 | if (tp == NULL) | |
1389 | error (_("No thread.")); | |
1390 | ||
1391 | if (tp->btrace.target == NULL) | |
1392 | return RECORD_METHOD_NONE; | |
1393 | ||
1394 | return RECORD_METHOD_BTRACE; | |
1395 | } | |
1396 | ||
f6ac5f3d | 1397 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1398 | |
f6ac5f3d PA |
1399 | int |
1400 | record_btrace_target::record_is_replaying (ptid_t ptid) | |
07bbe694 MM |
1401 | { |
1402 | struct thread_info *tp; | |
1403 | ||
034f788c | 1404 | ALL_NON_EXITED_THREADS (tp) |
a52eab48 | 1405 | if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) |
07bbe694 MM |
1406 | return 1; |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
f6ac5f3d | 1411 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1412 | |
f6ac5f3d PA |
1413 | int |
1414 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) | |
7ff27e9b | 1415 | { |
f6ac5f3d | 1416 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1417 | } |
1418 | ||
f6ac5f3d | 1419 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1420 | |
f6ac5f3d PA |
1421 | enum target_xfer_status |
1422 | record_btrace_target::xfer_partial (enum target_object object, | |
1423 | const char *annex, gdb_byte *readbuf, | |
1424 | const gdb_byte *writebuf, ULONGEST offset, | |
1425 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1426 | { |
633785ff | 1427 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1428 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1429 | && !record_btrace_generating_corefile |
f6ac5f3d | 1430 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1431 | { |
1432 | switch (object) | |
1433 | { | |
1434 | case TARGET_OBJECT_MEMORY: | |
1435 | { | |
1436 | struct target_section *section; | |
1437 | ||
1438 | /* We do not allow writing memory in general. */ | |
1439 | if (writebuf != NULL) | |
9b409511 YQ |
1440 | { |
1441 | *xfered_len = len; | |
bc113b4e | 1442 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1443 | } |
633785ff MM |
1444 | |
1445 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1446 | section = target_section_by_addr (this, offset); |
633785ff MM |
1447 | if (section != NULL) |
1448 | { | |
1449 | /* Check if the section we found is readonly. */ | |
1450 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1451 | section->the_bfd_section) | |
1452 | & SEC_READONLY) != 0) | |
1453 | { | |
1454 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1455 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1456 | break; |
1457 | } | |
1458 | } | |
1459 | ||
9b409511 | 1460 | *xfered_len = len; |
bc113b4e | 1461 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1462 | } |
1463 | } | |
1464 | } | |
1465 | ||
1466 | /* Forward the request. */ | |
f6ac5f3d PA |
1467 | return this->beneath->xfer_partial (object, annex, readbuf, writebuf, |
1468 | offset, len, xfered_len); | |
633785ff MM |
1469 | } |
1470 | ||
f6ac5f3d | 1471 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1472 | |
f6ac5f3d PA |
1473 | int |
1474 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1475 | struct bp_target_info *bp_tgt) | |
633785ff | 1476 | { |
67b5c0c1 MM |
1477 | const char *old; |
1478 | int ret; | |
633785ff MM |
1479 | |
1480 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1481 | duration of this function. */ | |
67b5c0c1 MM |
1482 | old = replay_memory_access; |
1483 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1484 | |
1485 | ret = 0; | |
492d29ea PA |
1486 | TRY |
1487 | { | |
f6ac5f3d | 1488 | ret = this->beneath->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1489 | } |
492d29ea PA |
1490 | CATCH (except, RETURN_MASK_ALL) |
1491 | { | |
6c63c96a | 1492 | replay_memory_access = old; |
492d29ea PA |
1493 | throw_exception (except); |
1494 | } | |
1495 | END_CATCH | |
6c63c96a | 1496 | replay_memory_access = old; |
633785ff MM |
1497 | |
1498 | return ret; | |
1499 | } | |
1500 | ||
f6ac5f3d | 1501 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1502 | |
f6ac5f3d PA |
1503 | int |
1504 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1505 | struct bp_target_info *bp_tgt, | |
1506 | enum remove_bp_reason reason) | |
633785ff | 1507 | { |
67b5c0c1 MM |
1508 | const char *old; |
1509 | int ret; | |
633785ff MM |
1510 | |
1511 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1512 | duration of this function. */ | |
67b5c0c1 MM |
1513 | old = replay_memory_access; |
1514 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1515 | |
1516 | ret = 0; | |
492d29ea PA |
1517 | TRY |
1518 | { | |
f6ac5f3d | 1519 | ret = this->beneath->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1520 | } |
492d29ea PA |
1521 | CATCH (except, RETURN_MASK_ALL) |
1522 | { | |
6c63c96a | 1523 | replay_memory_access = old; |
492d29ea PA |
1524 | throw_exception (except); |
1525 | } | |
1526 | END_CATCH | |
6c63c96a | 1527 | replay_memory_access = old; |
633785ff MM |
1528 | |
1529 | return ret; | |
1530 | } | |
1531 | ||
f6ac5f3d | 1532 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1533 | |
f6ac5f3d PA |
1534 | void |
1535 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1536 | { |
1537 | struct btrace_insn_iterator *replay; | |
1538 | struct thread_info *tp; | |
1539 | ||
bcc0c096 | 1540 | tp = find_thread_ptid (regcache_get_ptid (regcache)); |
1f3ef581 MM |
1541 | gdb_assert (tp != NULL); |
1542 | ||
1543 | replay = tp->btrace.replay; | |
aef92902 | 1544 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1545 | { |
1546 | const struct btrace_insn *insn; | |
1547 | struct gdbarch *gdbarch; | |
1548 | int pcreg; | |
1549 | ||
ac7936df | 1550 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1551 | pcreg = gdbarch_pc_regnum (gdbarch); |
1552 | if (pcreg < 0) | |
1553 | return; | |
1554 | ||
1555 | /* We can only provide the PC register. */ | |
1556 | if (regno >= 0 && regno != pcreg) | |
1557 | return; | |
1558 | ||
1559 | insn = btrace_insn_get (replay); | |
1560 | gdb_assert (insn != NULL); | |
1561 | ||
1562 | regcache_raw_supply (regcache, regno, &insn->pc); | |
1563 | } | |
1564 | else | |
f6ac5f3d | 1565 | this->beneath->fetch_registers (regcache, regno); |
1f3ef581 MM |
1566 | } |
1567 | ||
f6ac5f3d | 1568 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1569 | |
f6ac5f3d PA |
1570 | void |
1571 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1572 | { |
1573 | struct target_ops *t; | |
1574 | ||
a52eab48 | 1575 | if (!record_btrace_generating_corefile |
f6ac5f3d | 1576 | && record_is_replaying (regcache_get_ptid (regcache))) |
4d10e986 | 1577 | error (_("Cannot write registers while replaying.")); |
1f3ef581 MM |
1578 | |
1579 | gdb_assert (may_write_registers != 0); | |
1580 | ||
f6ac5f3d | 1581 | this->beneath->store_registers (regcache, regno); |
1f3ef581 MM |
1582 | } |
1583 | ||
f6ac5f3d | 1584 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1585 | |
f6ac5f3d PA |
1586 | void |
1587 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1588 | { |
a52eab48 | 1589 | if (!record_btrace_generating_corefile |
f6ac5f3d | 1590 | && record_is_replaying (regcache_get_ptid (regcache))) |
1f3ef581 MM |
1591 | return; |
1592 | ||
f6ac5f3d | 1593 | this->beneath->prepare_to_store (regcache); |
1f3ef581 MM |
1594 | } |
1595 | ||
0b722aec MM |
1596 | /* The branch trace frame cache. */ |
1597 | ||
1598 | struct btrace_frame_cache | |
1599 | { | |
1600 | /* The thread. */ | |
1601 | struct thread_info *tp; | |
1602 | ||
1603 | /* The frame info. */ | |
1604 | struct frame_info *frame; | |
1605 | ||
1606 | /* The branch trace function segment. */ | |
1607 | const struct btrace_function *bfun; | |
1608 | }; | |
1609 | ||
1610 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1611 | ||
1612 | static htab_t bfcache; | |
1613 | ||
1614 | /* hash_f for htab_create_alloc of bfcache. */ | |
1615 | ||
1616 | static hashval_t | |
1617 | bfcache_hash (const void *arg) | |
1618 | { | |
19ba03f4 SM |
1619 | const struct btrace_frame_cache *cache |
1620 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1621 | |
1622 | return htab_hash_pointer (cache->frame); | |
1623 | } | |
1624 | ||
1625 | /* eq_f for htab_create_alloc of bfcache. */ | |
1626 | ||
1627 | static int | |
1628 | bfcache_eq (const void *arg1, const void *arg2) | |
1629 | { | |
19ba03f4 SM |
1630 | const struct btrace_frame_cache *cache1 |
1631 | = (const struct btrace_frame_cache *) arg1; | |
1632 | const struct btrace_frame_cache *cache2 | |
1633 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1634 | |
1635 | return cache1->frame == cache2->frame; | |
1636 | } | |
1637 | ||
1638 | /* Create a new btrace frame cache. */ | |
1639 | ||
1640 | static struct btrace_frame_cache * | |
1641 | bfcache_new (struct frame_info *frame) | |
1642 | { | |
1643 | struct btrace_frame_cache *cache; | |
1644 | void **slot; | |
1645 | ||
1646 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1647 | cache->frame = frame; | |
1648 | ||
1649 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1650 | gdb_assert (*slot == NULL); | |
1651 | *slot = cache; | |
1652 | ||
1653 | return cache; | |
1654 | } | |
1655 | ||
1656 | /* Extract the branch trace function from a branch trace frame. */ | |
1657 | ||
1658 | static const struct btrace_function * | |
1659 | btrace_get_frame_function (struct frame_info *frame) | |
1660 | { | |
1661 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1662 | struct btrace_frame_cache pattern; |
1663 | void **slot; | |
1664 | ||
1665 | pattern.frame = frame; | |
1666 | ||
1667 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1668 | if (slot == NULL) | |
1669 | return NULL; | |
1670 | ||
19ba03f4 | 1671 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1672 | return cache->bfun; |
1673 | } | |
1674 | ||
cecac1ab MM |
1675 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1676 | ||
1677 | static enum unwind_stop_reason | |
1678 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1679 | void **this_cache) | |
1680 | { | |
0b722aec MM |
1681 | const struct btrace_frame_cache *cache; |
1682 | const struct btrace_function *bfun; | |
1683 | ||
19ba03f4 | 1684 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1685 | bfun = cache->bfun; |
1686 | gdb_assert (bfun != NULL); | |
1687 | ||
42bfe59e | 1688 | if (bfun->up == 0) |
0b722aec MM |
1689 | return UNWIND_UNAVAILABLE; |
1690 | ||
1691 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1692 | } |
1693 | ||
1694 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1695 | ||
1696 | static void | |
1697 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1698 | struct frame_id *this_id) | |
1699 | { | |
0b722aec MM |
1700 | const struct btrace_frame_cache *cache; |
1701 | const struct btrace_function *bfun; | |
4aeb0dfc | 1702 | struct btrace_call_iterator it; |
0b722aec MM |
1703 | CORE_ADDR code, special; |
1704 | ||
19ba03f4 | 1705 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1706 | |
1707 | bfun = cache->bfun; | |
1708 | gdb_assert (bfun != NULL); | |
1709 | ||
4aeb0dfc TW |
1710 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1711 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1712 | |
1713 | code = get_frame_func (this_frame); | |
1714 | special = bfun->number; | |
1715 | ||
1716 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1717 | ||
1718 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1719 | btrace_get_bfun_name (cache->bfun), | |
1720 | core_addr_to_string_nz (this_id->code_addr), | |
1721 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1722 | } |
1723 | ||
1724 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1725 | ||
1726 | static struct value * | |
1727 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1728 | void **this_cache, | |
1729 | int regnum) | |
1730 | { | |
0b722aec MM |
1731 | const struct btrace_frame_cache *cache; |
1732 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1733 | struct btrace_call_iterator it; |
0b722aec MM |
1734 | struct gdbarch *gdbarch; |
1735 | CORE_ADDR pc; | |
1736 | int pcreg; | |
1737 | ||
1738 | gdbarch = get_frame_arch (this_frame); | |
1739 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1740 | if (pcreg < 0 || regnum != pcreg) | |
1741 | throw_error (NOT_AVAILABLE_ERROR, | |
1742 | _("Registers are not available in btrace record history")); | |
1743 | ||
19ba03f4 | 1744 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1745 | bfun = cache->bfun; |
1746 | gdb_assert (bfun != NULL); | |
1747 | ||
42bfe59e | 1748 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1749 | throw_error (NOT_AVAILABLE_ERROR, |
1750 | _("No caller in btrace record history")); | |
1751 | ||
42bfe59e TW |
1752 | caller = btrace_call_get (&it); |
1753 | ||
0b722aec | 1754 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1755 | pc = caller->insn.front ().pc; |
0b722aec MM |
1756 | else |
1757 | { | |
0860c437 | 1758 | pc = caller->insn.back ().pc; |
0b722aec MM |
1759 | pc += gdb_insn_length (gdbarch, pc); |
1760 | } | |
1761 | ||
1762 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1763 | btrace_get_bfun_name (bfun), bfun->level, | |
1764 | core_addr_to_string_nz (pc)); | |
1765 | ||
1766 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1767 | } |
1768 | ||
1769 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1770 | ||
1771 | static int | |
1772 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1773 | struct frame_info *this_frame, | |
1774 | void **this_cache) | |
1775 | { | |
0b722aec MM |
1776 | const struct btrace_function *bfun; |
1777 | struct btrace_frame_cache *cache; | |
cecac1ab | 1778 | struct thread_info *tp; |
0b722aec | 1779 | struct frame_info *next; |
cecac1ab MM |
1780 | |
1781 | /* THIS_FRAME does not contain a reference to its thread. */ | |
1782 | tp = find_thread_ptid (inferior_ptid); | |
1783 | gdb_assert (tp != NULL); | |
1784 | ||
0b722aec MM |
1785 | bfun = NULL; |
1786 | next = get_next_frame (this_frame); | |
1787 | if (next == NULL) | |
1788 | { | |
1789 | const struct btrace_insn_iterator *replay; | |
1790 | ||
1791 | replay = tp->btrace.replay; | |
1792 | if (replay != NULL) | |
08c3f6d2 | 1793 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1794 | } |
1795 | else | |
1796 | { | |
1797 | const struct btrace_function *callee; | |
42bfe59e | 1798 | struct btrace_call_iterator it; |
0b722aec MM |
1799 | |
1800 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1801 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1802 | return 0; | |
1803 | ||
1804 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1805 | return 0; | |
1806 | ||
1807 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1808 | } |
1809 | ||
1810 | if (bfun == NULL) | |
1811 | return 0; | |
1812 | ||
1813 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1814 | btrace_get_bfun_name (bfun), bfun->level); | |
1815 | ||
1816 | /* This is our frame. Initialize the frame cache. */ | |
1817 | cache = bfcache_new (this_frame); | |
1818 | cache->tp = tp; | |
1819 | cache->bfun = bfun; | |
1820 | ||
1821 | *this_cache = cache; | |
1822 | return 1; | |
1823 | } | |
1824 | ||
1825 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1826 | ||
1827 | static int | |
1828 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1829 | struct frame_info *this_frame, | |
1830 | void **this_cache) | |
1831 | { | |
1832 | const struct btrace_function *bfun, *callee; | |
1833 | struct btrace_frame_cache *cache; | |
42bfe59e | 1834 | struct btrace_call_iterator it; |
0b722aec | 1835 | struct frame_info *next; |
42bfe59e | 1836 | struct thread_info *tinfo; |
0b722aec MM |
1837 | |
1838 | next = get_next_frame (this_frame); | |
1839 | if (next == NULL) | |
1840 | return 0; | |
1841 | ||
1842 | callee = btrace_get_frame_function (next); | |
1843 | if (callee == NULL) | |
1844 | return 0; | |
1845 | ||
1846 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1847 | return 0; | |
1848 | ||
42bfe59e TW |
1849 | tinfo = find_thread_ptid (inferior_ptid); |
1850 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) | |
0b722aec MM |
1851 | return 0; |
1852 | ||
42bfe59e TW |
1853 | bfun = btrace_call_get (&it); |
1854 | ||
0b722aec MM |
1855 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1856 | btrace_get_bfun_name (bfun), bfun->level); | |
1857 | ||
1858 | /* This is our frame. Initialize the frame cache. */ | |
1859 | cache = bfcache_new (this_frame); | |
42bfe59e | 1860 | cache->tp = tinfo; |
0b722aec MM |
1861 | cache->bfun = bfun; |
1862 | ||
1863 | *this_cache = cache; | |
1864 | return 1; | |
1865 | } | |
1866 | ||
1867 | static void | |
1868 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1869 | { | |
1870 | struct btrace_frame_cache *cache; | |
1871 | void **slot; | |
1872 | ||
19ba03f4 | 1873 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1874 | |
1875 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1876 | gdb_assert (slot != NULL); | |
1877 | ||
1878 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1879 | } |
1880 | ||
1881 | /* btrace recording does not store previous memory content, neither the stack | |
1882 | frames content. Any unwinding would return errorneous results as the stack | |
1883 | contents no longer matches the changed PC value restored from history. | |
1884 | Therefore this unwinder reports any possibly unwound registers as | |
1885 | <unavailable>. */ | |
1886 | ||
0b722aec | 1887 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1888 | { |
1889 | NORMAL_FRAME, | |
1890 | record_btrace_frame_unwind_stop_reason, | |
1891 | record_btrace_frame_this_id, | |
1892 | record_btrace_frame_prev_register, | |
1893 | NULL, | |
0b722aec MM |
1894 | record_btrace_frame_sniffer, |
1895 | record_btrace_frame_dealloc_cache | |
1896 | }; | |
1897 | ||
1898 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1899 | { | |
1900 | TAILCALL_FRAME, | |
1901 | record_btrace_frame_unwind_stop_reason, | |
1902 | record_btrace_frame_this_id, | |
1903 | record_btrace_frame_prev_register, | |
1904 | NULL, | |
1905 | record_btrace_tailcall_frame_sniffer, | |
1906 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1907 | }; |
b2f4cfde | 1908 | |
f6ac5f3d | 1909 | /* Implement the get_unwinder method. */ |
ac01945b | 1910 | |
f6ac5f3d PA |
1911 | const struct frame_unwind * |
1912 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1913 | { |
1914 | return &record_btrace_frame_unwind; | |
1915 | } | |
1916 | ||
f6ac5f3d | 1917 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1918 | |
f6ac5f3d PA |
1919 | const struct frame_unwind * |
1920 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1921 | { |
1922 | return &record_btrace_tailcall_frame_unwind; | |
1923 | } | |
1924 | ||
987e68b1 MM |
1925 | /* Return a human-readable string for FLAG. */ |
1926 | ||
1927 | static const char * | |
1928 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1929 | { | |
1930 | switch (flag) | |
1931 | { | |
1932 | case BTHR_STEP: | |
1933 | return "step"; | |
1934 | ||
1935 | case BTHR_RSTEP: | |
1936 | return "reverse-step"; | |
1937 | ||
1938 | case BTHR_CONT: | |
1939 | return "cont"; | |
1940 | ||
1941 | case BTHR_RCONT: | |
1942 | return "reverse-cont"; | |
1943 | ||
1944 | case BTHR_STOP: | |
1945 | return "stop"; | |
1946 | } | |
1947 | ||
1948 | return "<invalid>"; | |
1949 | } | |
1950 | ||
52834460 MM |
1951 | /* Indicate that TP should be resumed according to FLAG. */ |
1952 | ||
1953 | static void | |
1954 | record_btrace_resume_thread (struct thread_info *tp, | |
1955 | enum btrace_thread_flag flag) | |
1956 | { | |
1957 | struct btrace_thread_info *btinfo; | |
1958 | ||
43792cf0 | 1959 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 | 1960 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); |
52834460 MM |
1961 | |
1962 | btinfo = &tp->btrace; | |
1963 | ||
52834460 | 1964 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1965 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1966 | |
0ca912df MM |
1967 | /* A resume request overwrites a preceding resume or stop request. */ |
1968 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1969 | btinfo->flags |= flag; |
1970 | } | |
1971 | ||
ec71cc2f MM |
1972 | /* Get the current frame for TP. */ |
1973 | ||
1974 | static struct frame_info * | |
1975 | get_thread_current_frame (struct thread_info *tp) | |
1976 | { | |
1977 | struct frame_info *frame; | |
1978 | ptid_t old_inferior_ptid; | |
1979 | int executing; | |
1980 | ||
1981 | /* Set INFERIOR_PTID, which is implicitly used by get_current_frame. */ | |
1982 | old_inferior_ptid = inferior_ptid; | |
1983 | inferior_ptid = tp->ptid; | |
1984 | ||
1985 | /* Clear the executing flag to allow changes to the current frame. | |
1986 | We are not actually running, yet. We just started a reverse execution | |
1987 | command or a record goto command. | |
1988 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1989 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f MM |
1990 | move the thread. Since we need to recompute the stack, we temporarily |
1991 | set EXECUTING to flase. */ | |
1992 | executing = is_executing (inferior_ptid); | |
1993 | set_executing (inferior_ptid, 0); | |
1994 | ||
1995 | frame = NULL; | |
1996 | TRY | |
1997 | { | |
1998 | frame = get_current_frame (); | |
1999 | } | |
2000 | CATCH (except, RETURN_MASK_ALL) | |
2001 | { | |
2002 | /* Restore the previous execution state. */ | |
2003 | set_executing (inferior_ptid, executing); | |
2004 | ||
2005 | /* Restore the previous inferior_ptid. */ | |
2006 | inferior_ptid = old_inferior_ptid; | |
2007 | ||
2008 | throw_exception (except); | |
2009 | } | |
2010 | END_CATCH | |
2011 | ||
2012 | /* Restore the previous execution state. */ | |
2013 | set_executing (inferior_ptid, executing); | |
2014 | ||
2015 | /* Restore the previous inferior_ptid. */ | |
2016 | inferior_ptid = old_inferior_ptid; | |
2017 | ||
2018 | return frame; | |
2019 | } | |
2020 | ||
52834460 MM |
2021 | /* Start replaying a thread. */ |
2022 | ||
2023 | static struct btrace_insn_iterator * | |
2024 | record_btrace_start_replaying (struct thread_info *tp) | |
2025 | { | |
52834460 MM |
2026 | struct btrace_insn_iterator *replay; |
2027 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2028 | |
2029 | btinfo = &tp->btrace; | |
2030 | replay = NULL; | |
2031 | ||
2032 | /* We can't start replaying without trace. */ | |
b54b03bd | 2033 | if (btinfo->functions.empty ()) |
52834460 MM |
2034 | return NULL; |
2035 | ||
52834460 MM |
2036 | /* GDB stores the current frame_id when stepping in order to detects steps |
2037 | into subroutines. | |
2038 | Since frames are computed differently when we're replaying, we need to | |
2039 | recompute those stored frames and fix them up so we can still detect | |
2040 | subroutines after we started replaying. */ | |
492d29ea | 2041 | TRY |
52834460 MM |
2042 | { |
2043 | struct frame_info *frame; | |
2044 | struct frame_id frame_id; | |
2045 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2046 | ||
2047 | /* The current frame without replaying - computed via normal unwind. */ | |
ec71cc2f | 2048 | frame = get_thread_current_frame (tp); |
52834460 MM |
2049 | frame_id = get_frame_id (frame); |
2050 | ||
2051 | /* Check if we need to update any stepping-related frame id's. */ | |
2052 | upd_step_frame_id = frame_id_eq (frame_id, | |
2053 | tp->control.step_frame_id); | |
2054 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2055 | tp->control.step_stack_frame_id); | |
2056 | ||
2057 | /* We start replaying at the end of the branch trace. This corresponds | |
2058 | to the current instruction. */ | |
8d749320 | 2059 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2060 | btrace_insn_end (replay, btinfo); |
2061 | ||
31fd9caa MM |
2062 | /* Skip gaps at the end of the trace. */ |
2063 | while (btrace_insn_get (replay) == NULL) | |
2064 | { | |
2065 | unsigned int steps; | |
2066 | ||
2067 | steps = btrace_insn_prev (replay, 1); | |
2068 | if (steps == 0) | |
2069 | error (_("No trace.")); | |
2070 | } | |
2071 | ||
52834460 MM |
2072 | /* We're not replaying, yet. */ |
2073 | gdb_assert (btinfo->replay == NULL); | |
2074 | btinfo->replay = replay; | |
2075 | ||
2076 | /* Make sure we're not using any stale registers. */ | |
2077 | registers_changed_ptid (tp->ptid); | |
2078 | ||
2079 | /* The current frame with replaying - computed via btrace unwind. */ | |
ec71cc2f | 2080 | frame = get_thread_current_frame (tp); |
52834460 MM |
2081 | frame_id = get_frame_id (frame); |
2082 | ||
2083 | /* Replace stepping related frames where necessary. */ | |
2084 | if (upd_step_frame_id) | |
2085 | tp->control.step_frame_id = frame_id; | |
2086 | if (upd_step_stack_frame_id) | |
2087 | tp->control.step_stack_frame_id = frame_id; | |
2088 | } | |
492d29ea | 2089 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
2090 | { |
2091 | xfree (btinfo->replay); | |
2092 | btinfo->replay = NULL; | |
2093 | ||
2094 | registers_changed_ptid (tp->ptid); | |
2095 | ||
2096 | throw_exception (except); | |
2097 | } | |
492d29ea | 2098 | END_CATCH |
52834460 MM |
2099 | |
2100 | return replay; | |
2101 | } | |
2102 | ||
2103 | /* Stop replaying a thread. */ | |
2104 | ||
2105 | static void | |
2106 | record_btrace_stop_replaying (struct thread_info *tp) | |
2107 | { | |
2108 | struct btrace_thread_info *btinfo; | |
2109 | ||
2110 | btinfo = &tp->btrace; | |
2111 | ||
2112 | xfree (btinfo->replay); | |
2113 | btinfo->replay = NULL; | |
2114 | ||
2115 | /* Make sure we're not leaving any stale registers. */ | |
2116 | registers_changed_ptid (tp->ptid); | |
2117 | } | |
2118 | ||
e3cfc1c7 MM |
2119 | /* Stop replaying TP if it is at the end of its execution history. */ |
2120 | ||
2121 | static void | |
2122 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2123 | { | |
2124 | struct btrace_insn_iterator *replay, end; | |
2125 | struct btrace_thread_info *btinfo; | |
2126 | ||
2127 | btinfo = &tp->btrace; | |
2128 | replay = btinfo->replay; | |
2129 | ||
2130 | if (replay == NULL) | |
2131 | return; | |
2132 | ||
2133 | btrace_insn_end (&end, btinfo); | |
2134 | ||
2135 | if (btrace_insn_cmp (replay, &end) == 0) | |
2136 | record_btrace_stop_replaying (tp); | |
2137 | } | |
2138 | ||
f6ac5f3d | 2139 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2140 | |
f6ac5f3d PA |
2141 | void |
2142 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2143 | { |
0ca912df | 2144 | struct thread_info *tp; |
d2939ba2 | 2145 | enum btrace_thread_flag flag, cflag; |
52834460 | 2146 | |
987e68b1 | 2147 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
f6ac5f3d | 2148 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2149 | step ? "step" : "cont"); |
52834460 | 2150 | |
0ca912df MM |
2151 | /* Store the execution direction of the last resume. |
2152 | ||
f6ac5f3d | 2153 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2154 | to not change the execution direction in-between. */ |
f6ac5f3d | 2155 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2156 | |
0ca912df | 2157 | /* As long as we're not replaying, just forward the request. |
52834460 | 2158 | |
0ca912df MM |
2159 | For non-stop targets this means that no thread is replaying. In order to |
2160 | make progress, we may need to explicitly move replaying threads to the end | |
2161 | of their execution history. */ | |
f6ac5f3d PA |
2162 | if ((::execution_direction != EXEC_REVERSE) |
2163 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2164 | { |
f6ac5f3d | 2165 | this->beneath->resume (ptid, step, signal); |
04c4fe8c | 2166 | return; |
b2f4cfde MM |
2167 | } |
2168 | ||
52834460 | 2169 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2170 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2171 | { |
2172 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2173 | cflag = BTHR_RCONT; | |
2174 | } | |
52834460 | 2175 | else |
d2939ba2 MM |
2176 | { |
2177 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2178 | cflag = BTHR_CONT; | |
2179 | } | |
52834460 | 2180 | |
52834460 | 2181 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2182 | record_btrace_wait below. |
2183 | ||
2184 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2185 | if (!target_is_non_stop_p ()) | |
2186 | { | |
2187 | gdb_assert (ptid_match (inferior_ptid, ptid)); | |
2188 | ||
2189 | ALL_NON_EXITED_THREADS (tp) | |
2190 | if (ptid_match (tp->ptid, ptid)) | |
2191 | { | |
2192 | if (ptid_match (tp->ptid, inferior_ptid)) | |
2193 | record_btrace_resume_thread (tp, flag); | |
2194 | else | |
2195 | record_btrace_resume_thread (tp, cflag); | |
2196 | } | |
2197 | } | |
2198 | else | |
2199 | { | |
2200 | ALL_NON_EXITED_THREADS (tp) | |
2201 | if (ptid_match (tp->ptid, ptid)) | |
2202 | record_btrace_resume_thread (tp, flag); | |
2203 | } | |
70ad5bff MM |
2204 | |
2205 | /* Async support. */ | |
2206 | if (target_can_async_p ()) | |
2207 | { | |
6a3753b3 | 2208 | target_async (1); |
70ad5bff MM |
2209 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2210 | } | |
52834460 MM |
2211 | } |
2212 | ||
f6ac5f3d | 2213 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2214 | |
f6ac5f3d PA |
2215 | void |
2216 | record_btrace_target::commit_resume () | |
85ad3aaf | 2217 | { |
f6ac5f3d PA |
2218 | if ((::execution_direction != EXEC_REVERSE) |
2219 | && !record_is_replaying (minus_one_ptid)) | |
2220 | beneath->commit_resume (); | |
85ad3aaf PA |
2221 | } |
2222 | ||
987e68b1 MM |
2223 | /* Cancel resuming TP. */ |
2224 | ||
2225 | static void | |
2226 | record_btrace_cancel_resume (struct thread_info *tp) | |
2227 | { | |
2228 | enum btrace_thread_flag flags; | |
2229 | ||
2230 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2231 | if (flags == 0) | |
2232 | return; | |
2233 | ||
43792cf0 PA |
2234 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2235 | print_thread_id (tp), | |
987e68b1 MM |
2236 | target_pid_to_str (tp->ptid), flags, |
2237 | btrace_thread_flag_to_str (flags)); | |
2238 | ||
2239 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2240 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2241 | } |
2242 | ||
2243 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2244 | ||
2245 | static struct target_waitstatus | |
2246 | btrace_step_no_history (void) | |
2247 | { | |
2248 | struct target_waitstatus status; | |
2249 | ||
2250 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2251 | ||
2252 | return status; | |
2253 | } | |
2254 | ||
2255 | /* Return a target_waitstatus indicating that a step finished. */ | |
2256 | ||
2257 | static struct target_waitstatus | |
2258 | btrace_step_stopped (void) | |
2259 | { | |
2260 | struct target_waitstatus status; | |
2261 | ||
2262 | status.kind = TARGET_WAITKIND_STOPPED; | |
2263 | status.value.sig = GDB_SIGNAL_TRAP; | |
2264 | ||
2265 | return status; | |
2266 | } | |
2267 | ||
6e4879f0 MM |
2268 | /* Return a target_waitstatus indicating that a thread was stopped as |
2269 | requested. */ | |
2270 | ||
2271 | static struct target_waitstatus | |
2272 | btrace_step_stopped_on_request (void) | |
2273 | { | |
2274 | struct target_waitstatus status; | |
2275 | ||
2276 | status.kind = TARGET_WAITKIND_STOPPED; | |
2277 | status.value.sig = GDB_SIGNAL_0; | |
2278 | ||
2279 | return status; | |
2280 | } | |
2281 | ||
d825d248 MM |
2282 | /* Return a target_waitstatus indicating a spurious stop. */ |
2283 | ||
2284 | static struct target_waitstatus | |
2285 | btrace_step_spurious (void) | |
2286 | { | |
2287 | struct target_waitstatus status; | |
2288 | ||
2289 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2290 | ||
2291 | return status; | |
2292 | } | |
2293 | ||
e3cfc1c7 MM |
2294 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2295 | ||
2296 | static struct target_waitstatus | |
2297 | btrace_step_no_resumed (void) | |
2298 | { | |
2299 | struct target_waitstatus status; | |
2300 | ||
2301 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2302 | ||
2303 | return status; | |
2304 | } | |
2305 | ||
2306 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2307 | ||
2308 | static struct target_waitstatus | |
2309 | btrace_step_again (void) | |
2310 | { | |
2311 | struct target_waitstatus status; | |
2312 | ||
2313 | status.kind = TARGET_WAITKIND_IGNORE; | |
2314 | ||
2315 | return status; | |
2316 | } | |
2317 | ||
52834460 MM |
2318 | /* Clear the record histories. */ |
2319 | ||
2320 | static void | |
2321 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2322 | { | |
2323 | xfree (btinfo->insn_history); | |
2324 | xfree (btinfo->call_history); | |
2325 | ||
2326 | btinfo->insn_history = NULL; | |
2327 | btinfo->call_history = NULL; | |
2328 | } | |
2329 | ||
3c615f99 MM |
2330 | /* Check whether TP's current replay position is at a breakpoint. */ |
2331 | ||
2332 | static int | |
2333 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2334 | { | |
2335 | struct btrace_insn_iterator *replay; | |
2336 | struct btrace_thread_info *btinfo; | |
2337 | const struct btrace_insn *insn; | |
2338 | struct inferior *inf; | |
2339 | ||
2340 | btinfo = &tp->btrace; | |
2341 | replay = btinfo->replay; | |
2342 | ||
2343 | if (replay == NULL) | |
2344 | return 0; | |
2345 | ||
2346 | insn = btrace_insn_get (replay); | |
2347 | if (insn == NULL) | |
2348 | return 0; | |
2349 | ||
2350 | inf = find_inferior_ptid (tp->ptid); | |
2351 | if (inf == NULL) | |
2352 | return 0; | |
2353 | ||
2354 | return record_check_stopped_by_breakpoint (inf->aspace, insn->pc, | |
2355 | &btinfo->stop_reason); | |
2356 | } | |
2357 | ||
d825d248 | 2358 | /* Step one instruction in forward direction. */ |
52834460 MM |
2359 | |
2360 | static struct target_waitstatus | |
d825d248 | 2361 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2362 | { |
b61ce85c | 2363 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2364 | struct btrace_thread_info *btinfo; |
52834460 | 2365 | |
d825d248 MM |
2366 | btinfo = &tp->btrace; |
2367 | replay = btinfo->replay; | |
2368 | ||
2369 | /* We're done if we're not replaying. */ | |
2370 | if (replay == NULL) | |
2371 | return btrace_step_no_history (); | |
2372 | ||
011c71b6 MM |
2373 | /* Check if we're stepping a breakpoint. */ |
2374 | if (record_btrace_replay_at_breakpoint (tp)) | |
2375 | return btrace_step_stopped (); | |
2376 | ||
b61ce85c MM |
2377 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2378 | jump back to the instruction at which we started. */ | |
2379 | start = *replay; | |
d825d248 MM |
2380 | do |
2381 | { | |
2382 | unsigned int steps; | |
2383 | ||
e3cfc1c7 MM |
2384 | /* We will bail out here if we continue stepping after reaching the end |
2385 | of the execution history. */ | |
d825d248 MM |
2386 | steps = btrace_insn_next (replay, 1); |
2387 | if (steps == 0) | |
b61ce85c MM |
2388 | { |
2389 | *replay = start; | |
2390 | return btrace_step_no_history (); | |
2391 | } | |
d825d248 MM |
2392 | } |
2393 | while (btrace_insn_get (replay) == NULL); | |
2394 | ||
2395 | /* Determine the end of the instruction trace. */ | |
2396 | btrace_insn_end (&end, btinfo); | |
2397 | ||
e3cfc1c7 MM |
2398 | /* The execution trace contains (and ends with) the current instruction. |
2399 | This instruction has not been executed, yet, so the trace really ends | |
2400 | one instruction earlier. */ | |
d825d248 | 2401 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2402 | return btrace_step_no_history (); |
d825d248 MM |
2403 | |
2404 | return btrace_step_spurious (); | |
2405 | } | |
2406 | ||
2407 | /* Step one instruction in backward direction. */ | |
2408 | ||
2409 | static struct target_waitstatus | |
2410 | record_btrace_single_step_backward (struct thread_info *tp) | |
2411 | { | |
b61ce85c | 2412 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2413 | struct btrace_thread_info *btinfo; |
e59fa00f | 2414 | |
52834460 MM |
2415 | btinfo = &tp->btrace; |
2416 | replay = btinfo->replay; | |
2417 | ||
d825d248 MM |
2418 | /* Start replaying if we're not already doing so. */ |
2419 | if (replay == NULL) | |
2420 | replay = record_btrace_start_replaying (tp); | |
2421 | ||
2422 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2423 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2424 | the trace), jump back to the instruction at which we started. */ | |
2425 | start = *replay; | |
d825d248 MM |
2426 | do |
2427 | { | |
2428 | unsigned int steps; | |
2429 | ||
2430 | steps = btrace_insn_prev (replay, 1); | |
2431 | if (steps == 0) | |
b61ce85c MM |
2432 | { |
2433 | *replay = start; | |
2434 | return btrace_step_no_history (); | |
2435 | } | |
d825d248 MM |
2436 | } |
2437 | while (btrace_insn_get (replay) == NULL); | |
2438 | ||
011c71b6 MM |
2439 | /* Check if we're stepping a breakpoint. |
2440 | ||
2441 | For reverse-stepping, this check is after the step. There is logic in | |
2442 | infrun.c that handles reverse-stepping separately. See, for example, | |
2443 | proceed and adjust_pc_after_break. | |
2444 | ||
2445 | This code assumes that for reverse-stepping, PC points to the last | |
2446 | de-executed instruction, whereas for forward-stepping PC points to the | |
2447 | next to-be-executed instruction. */ | |
2448 | if (record_btrace_replay_at_breakpoint (tp)) | |
2449 | return btrace_step_stopped (); | |
2450 | ||
d825d248 MM |
2451 | return btrace_step_spurious (); |
2452 | } | |
2453 | ||
2454 | /* Step a single thread. */ | |
2455 | ||
2456 | static struct target_waitstatus | |
2457 | record_btrace_step_thread (struct thread_info *tp) | |
2458 | { | |
2459 | struct btrace_thread_info *btinfo; | |
2460 | struct target_waitstatus status; | |
2461 | enum btrace_thread_flag flags; | |
2462 | ||
2463 | btinfo = &tp->btrace; | |
2464 | ||
6e4879f0 MM |
2465 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2466 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2467 | |
43792cf0 | 2468 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 MM |
2469 | target_pid_to_str (tp->ptid), flags, |
2470 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2471 | |
6e4879f0 MM |
2472 | /* We can't step without an execution history. */ |
2473 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2474 | return btrace_step_no_history (); | |
2475 | ||
52834460 MM |
2476 | switch (flags) |
2477 | { | |
2478 | default: | |
2479 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2480 | ||
6e4879f0 MM |
2481 | case BTHR_STOP: |
2482 | return btrace_step_stopped_on_request (); | |
2483 | ||
52834460 | 2484 | case BTHR_STEP: |
d825d248 MM |
2485 | status = record_btrace_single_step_forward (tp); |
2486 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2487 | break; |
52834460 MM |
2488 | |
2489 | return btrace_step_stopped (); | |
2490 | ||
2491 | case BTHR_RSTEP: | |
d825d248 MM |
2492 | status = record_btrace_single_step_backward (tp); |
2493 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2494 | break; |
52834460 MM |
2495 | |
2496 | return btrace_step_stopped (); | |
2497 | ||
2498 | case BTHR_CONT: | |
e3cfc1c7 MM |
2499 | status = record_btrace_single_step_forward (tp); |
2500 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2501 | break; | |
52834460 | 2502 | |
e3cfc1c7 MM |
2503 | btinfo->flags |= flags; |
2504 | return btrace_step_again (); | |
52834460 MM |
2505 | |
2506 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2507 | status = record_btrace_single_step_backward (tp); |
2508 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2509 | break; | |
52834460 | 2510 | |
e3cfc1c7 MM |
2511 | btinfo->flags |= flags; |
2512 | return btrace_step_again (); | |
2513 | } | |
d825d248 | 2514 | |
f6ac5f3d | 2515 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2516 | method will stop the thread for whom the event is reported. */ |
2517 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2518 | btinfo->flags |= flags; | |
52834460 | 2519 | |
e3cfc1c7 | 2520 | return status; |
b2f4cfde MM |
2521 | } |
2522 | ||
e3cfc1c7 MM |
2523 | /* A vector of threads. */ |
2524 | ||
2525 | typedef struct thread_info * tp_t; | |
2526 | DEF_VEC_P (tp_t); | |
2527 | ||
a6b5be76 MM |
2528 | /* Announce further events if necessary. */ |
2529 | ||
2530 | static void | |
53127008 SM |
2531 | record_btrace_maybe_mark_async_event |
2532 | (const std::vector<thread_info *> &moving, | |
2533 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2534 | { |
53127008 SM |
2535 | bool more_moving = !moving.empty (); |
2536 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2537 | |
2538 | if (!more_moving && !more_no_history) | |
2539 | return; | |
2540 | ||
2541 | if (more_moving) | |
2542 | DEBUG ("movers pending"); | |
2543 | ||
2544 | if (more_no_history) | |
2545 | DEBUG ("no-history pending"); | |
2546 | ||
2547 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2548 | } | |
2549 | ||
f6ac5f3d | 2550 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2551 | |
f6ac5f3d PA |
2552 | ptid_t |
2553 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2554 | int options) | |
b2f4cfde | 2555 | { |
53127008 SM |
2556 | std::vector<thread_info *> moving; |
2557 | std::vector<thread_info *> no_history; | |
52834460 MM |
2558 | |
2559 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2560 | ||
b2f4cfde | 2561 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2562 | if ((::execution_direction != EXEC_REVERSE) |
2563 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2564 | { |
f6ac5f3d | 2565 | return this->beneath->wait (ptid, status, options); |
b2f4cfde MM |
2566 | } |
2567 | ||
e3cfc1c7 | 2568 | /* Keep a work list of moving threads. */ |
53127008 SM |
2569 | { |
2570 | thread_info *tp; | |
2571 | ||
2572 | ALL_NON_EXITED_THREADS (tp) | |
2573 | { | |
2574 | if (ptid_match (tp->ptid, ptid) | |
2575 | && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) | |
2576 | moving.push_back (tp); | |
2577 | } | |
2578 | } | |
e3cfc1c7 | 2579 | |
53127008 | 2580 | if (moving.empty ()) |
52834460 | 2581 | { |
e3cfc1c7 | 2582 | *status = btrace_step_no_resumed (); |
52834460 | 2583 | |
e3cfc1c7 | 2584 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
23fdd69e | 2585 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2586 | |
e3cfc1c7 | 2587 | return null_ptid; |
52834460 MM |
2588 | } |
2589 | ||
e3cfc1c7 MM |
2590 | /* Step moving threads one by one, one step each, until either one thread |
2591 | reports an event or we run out of threads to step. | |
2592 | ||
2593 | When stepping more than one thread, chances are that some threads reach | |
2594 | the end of their execution history earlier than others. If we reported | |
2595 | this immediately, all-stop on top of non-stop would stop all threads and | |
2596 | resume the same threads next time. And we would report the same thread | |
2597 | having reached the end of its execution history again. | |
2598 | ||
2599 | In the worst case, this would starve the other threads. But even if other | |
2600 | threads would be allowed to make progress, this would result in far too | |
2601 | many intermediate stops. | |
2602 | ||
2603 | We therefore delay the reporting of "no execution history" until we have | |
2604 | nothing else to report. By this time, all threads should have moved to | |
2605 | either the beginning or the end of their execution history. There will | |
2606 | be a single user-visible stop. */ | |
53127008 SM |
2607 | struct thread_info *eventing = NULL; |
2608 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2609 | { |
53127008 | 2610 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2611 | { |
53127008 SM |
2612 | thread_info *tp = moving[ix]; |
2613 | ||
e3cfc1c7 MM |
2614 | *status = record_btrace_step_thread (tp); |
2615 | ||
2616 | switch (status->kind) | |
2617 | { | |
2618 | case TARGET_WAITKIND_IGNORE: | |
2619 | ix++; | |
2620 | break; | |
2621 | ||
2622 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2623 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2624 | break; |
2625 | ||
2626 | default: | |
53127008 | 2627 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2628 | break; |
2629 | } | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | if (eventing == NULL) | |
2634 | { | |
2635 | /* We started with at least one moving thread. This thread must have | |
2636 | either stopped or reached the end of its execution history. | |
2637 | ||
2638 | In the former case, EVENTING must not be NULL. | |
2639 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2640 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2641 | |
2642 | /* We kept threads moving at the end of their execution history. Stop | |
2643 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2644 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2645 | eventing->btrace.flags &= ~BTHR_MOVE; |
2646 | ||
2647 | *status = btrace_step_no_history (); | |
2648 | } | |
2649 | ||
2650 | gdb_assert (eventing != NULL); | |
2651 | ||
2652 | /* We kept threads replaying at the end of their execution history. Stop | |
2653 | replaying EVENTING now that we are going to report its stop. */ | |
2654 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2655 | |
2656 | /* Stop all other threads. */ | |
5953356c | 2657 | if (!target_is_non_stop_p ()) |
53127008 SM |
2658 | { |
2659 | thread_info *tp; | |
2660 | ||
2661 | ALL_NON_EXITED_THREADS (tp) | |
2662 | record_btrace_cancel_resume (tp); | |
2663 | } | |
52834460 | 2664 | |
a6b5be76 MM |
2665 | /* In async mode, we need to announce further events. */ |
2666 | if (target_is_async_p ()) | |
2667 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2668 | ||
52834460 | 2669 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2670 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2671 | |
2672 | /* We moved the replay position but did not update registers. */ | |
e3cfc1c7 MM |
2673 | registers_changed_ptid (eventing->ptid); |
2674 | ||
43792cf0 PA |
2675 | DEBUG ("wait ended by thread %s (%s): %s", |
2676 | print_thread_id (eventing), | |
e3cfc1c7 | 2677 | target_pid_to_str (eventing->ptid), |
23fdd69e | 2678 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2679 | |
e3cfc1c7 | 2680 | return eventing->ptid; |
52834460 MM |
2681 | } |
2682 | ||
f6ac5f3d | 2683 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2684 | |
f6ac5f3d PA |
2685 | void |
2686 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 MM |
2687 | { |
2688 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2689 | ||
2690 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2691 | if ((::execution_direction != EXEC_REVERSE) |
2692 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2693 | { |
f6ac5f3d | 2694 | this->beneath->stop (ptid); |
6e4879f0 MM |
2695 | } |
2696 | else | |
2697 | { | |
2698 | struct thread_info *tp; | |
2699 | ||
2700 | ALL_NON_EXITED_THREADS (tp) | |
2701 | if (ptid_match (tp->ptid, ptid)) | |
2702 | { | |
2703 | tp->btrace.flags &= ~BTHR_MOVE; | |
2704 | tp->btrace.flags |= BTHR_STOP; | |
2705 | } | |
2706 | } | |
2707 | } | |
2708 | ||
f6ac5f3d | 2709 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2710 | |
f6ac5f3d PA |
2711 | int |
2712 | record_btrace_target::can_execute_reverse () | |
52834460 MM |
2713 | { |
2714 | return 1; | |
2715 | } | |
2716 | ||
f6ac5f3d | 2717 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2718 | |
f6ac5f3d PA |
2719 | int |
2720 | record_btrace_target::stopped_by_sw_breakpoint () | |
52834460 | 2721 | { |
f6ac5f3d | 2722 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2723 | { |
2724 | struct thread_info *tp = inferior_thread (); | |
2725 | ||
2726 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2727 | } | |
2728 | ||
f6ac5f3d | 2729 | return this->beneath->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2730 | } |
2731 | ||
f6ac5f3d | 2732 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2733 | record-btrace. */ |
2734 | ||
f6ac5f3d PA |
2735 | int |
2736 | record_btrace_target::supports_stopped_by_sw_breakpoint () | |
9e8915c6 | 2737 | { |
f6ac5f3d | 2738 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2739 | return 1; |
2740 | ||
f6ac5f3d | 2741 | return this->beneath->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2742 | } |
2743 | ||
f6ac5f3d | 2744 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2745 | |
f6ac5f3d PA |
2746 | int |
2747 | record_btrace_target::stopped_by_hw_breakpoint () | |
9e8915c6 | 2748 | { |
f6ac5f3d | 2749 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2750 | { |
2751 | struct thread_info *tp = inferior_thread (); | |
2752 | ||
2753 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2754 | } | |
2755 | ||
f6ac5f3d | 2756 | return this->beneath->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2757 | } |
2758 | ||
f6ac5f3d | 2759 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2760 | record-btrace. */ |
2761 | ||
f6ac5f3d PA |
2762 | int |
2763 | record_btrace_target::supports_stopped_by_hw_breakpoint () | |
9e8915c6 | 2764 | { |
f6ac5f3d | 2765 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 | 2766 | return 1; |
52834460 | 2767 | |
f6ac5f3d | 2768 | return this->beneath->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2769 | } |
2770 | ||
f6ac5f3d | 2771 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2772 | |
f6ac5f3d PA |
2773 | void |
2774 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2775 | { |
e8032dde | 2776 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2777 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2778 | return; |
2779 | ||
2780 | /* Forward the request. */ | |
f6ac5f3d | 2781 | this->beneath->update_thread_list (); |
e2887aa3 MM |
2782 | } |
2783 | ||
f6ac5f3d | 2784 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2785 | |
f6ac5f3d PA |
2786 | int |
2787 | record_btrace_target::thread_alive (ptid_t ptid) | |
e2887aa3 MM |
2788 | { |
2789 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2790 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2791 | return find_thread_ptid (ptid) != NULL; |
2792 | ||
2793 | /* Forward the request. */ | |
f6ac5f3d | 2794 | return this->beneath->thread_alive (ptid); |
e2887aa3 MM |
2795 | } |
2796 | ||
066ce621 MM |
2797 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2798 | is stopped. */ | |
2799 | ||
2800 | static void | |
2801 | record_btrace_set_replay (struct thread_info *tp, | |
2802 | const struct btrace_insn_iterator *it) | |
2803 | { | |
2804 | struct btrace_thread_info *btinfo; | |
2805 | ||
2806 | btinfo = &tp->btrace; | |
2807 | ||
a0f1b963 | 2808 | if (it == NULL) |
52834460 | 2809 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2810 | else |
2811 | { | |
2812 | if (btinfo->replay == NULL) | |
52834460 | 2813 | record_btrace_start_replaying (tp); |
066ce621 MM |
2814 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2815 | return; | |
2816 | ||
2817 | *btinfo->replay = *it; | |
52834460 | 2818 | registers_changed_ptid (tp->ptid); |
066ce621 MM |
2819 | } |
2820 | ||
52834460 MM |
2821 | /* Start anew from the new replay position. */ |
2822 | record_btrace_clear_histories (btinfo); | |
485668e5 MM |
2823 | |
2824 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
2825 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
066ce621 MM |
2826 | } |
2827 | ||
f6ac5f3d | 2828 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2829 | |
f6ac5f3d PA |
2830 | void |
2831 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2832 | { |
2833 | struct thread_info *tp; | |
2834 | struct btrace_insn_iterator begin; | |
2835 | ||
2836 | tp = require_btrace_thread (); | |
2837 | ||
2838 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2839 | |
2840 | /* Skip gaps at the beginning of the trace. */ | |
2841 | while (btrace_insn_get (&begin) == NULL) | |
2842 | { | |
2843 | unsigned int steps; | |
2844 | ||
2845 | steps = btrace_insn_next (&begin, 1); | |
2846 | if (steps == 0) | |
2847 | error (_("No trace.")); | |
2848 | } | |
2849 | ||
066ce621 | 2850 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2851 | } |
2852 | ||
f6ac5f3d | 2853 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2854 | |
f6ac5f3d PA |
2855 | void |
2856 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2857 | { |
2858 | struct thread_info *tp; | |
2859 | ||
2860 | tp = require_btrace_thread (); | |
2861 | ||
2862 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2863 | } |
2864 | ||
f6ac5f3d | 2865 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2866 | |
f6ac5f3d PA |
2867 | void |
2868 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2869 | { |
2870 | struct thread_info *tp; | |
2871 | struct btrace_insn_iterator it; | |
2872 | unsigned int number; | |
2873 | int found; | |
2874 | ||
2875 | number = insn; | |
2876 | ||
2877 | /* Check for wrap-arounds. */ | |
2878 | if (number != insn) | |
2879 | error (_("Instruction number out of range.")); | |
2880 | ||
2881 | tp = require_btrace_thread (); | |
2882 | ||
2883 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2884 | |
2885 | /* Check if the instruction could not be found or is a gap. */ | |
2886 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2887 | error (_("No such instruction.")); |
2888 | ||
2889 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2890 | } |
2891 | ||
f6ac5f3d | 2892 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2893 | |
f6ac5f3d PA |
2894 | void |
2895 | record_btrace_target::record_stop_replaying () | |
797094dd MM |
2896 | { |
2897 | struct thread_info *tp; | |
2898 | ||
2899 | ALL_NON_EXITED_THREADS (tp) | |
2900 | record_btrace_stop_replaying (tp); | |
2901 | } | |
2902 | ||
f6ac5f3d | 2903 | /* The execution_direction target method. */ |
70ad5bff | 2904 | |
f6ac5f3d PA |
2905 | enum exec_direction_kind |
2906 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2907 | { |
2908 | return record_btrace_resume_exec_dir; | |
2909 | } | |
2910 | ||
f6ac5f3d | 2911 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2912 | |
f6ac5f3d PA |
2913 | void |
2914 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2915 | { |
2916 | record_btrace_generating_corefile = 1; | |
2917 | } | |
2918 | ||
f6ac5f3d | 2919 | /* The done_generating_core target method. */ |
aef92902 | 2920 | |
f6ac5f3d PA |
2921 | void |
2922 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2923 | { |
2924 | record_btrace_generating_corefile = 0; | |
2925 | } | |
2926 | ||
f4abbc16 MM |
2927 | /* Start recording in BTS format. */ |
2928 | ||
2929 | static void | |
cdb34d4a | 2930 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2931 | { |
f4abbc16 MM |
2932 | if (args != NULL && *args != 0) |
2933 | error (_("Invalid argument.")); | |
2934 | ||
2935 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2936 | ||
492d29ea PA |
2937 | TRY |
2938 | { | |
95a6b0a1 | 2939 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2940 | } |
2941 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2942 | { |
2943 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2944 | throw_exception (exception); | |
2945 | } | |
492d29ea | 2946 | END_CATCH |
f4abbc16 MM |
2947 | } |
2948 | ||
bc504a31 | 2949 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2950 | |
2951 | static void | |
cdb34d4a | 2952 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2953 | { |
2954 | if (args != NULL && *args != 0) | |
2955 | error (_("Invalid argument.")); | |
2956 | ||
b20a6524 | 2957 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2958 | |
492d29ea PA |
2959 | TRY |
2960 | { | |
95a6b0a1 | 2961 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2962 | } |
2963 | CATCH (exception, RETURN_MASK_ALL) | |
2964 | { | |
2965 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2966 | throw_exception (exception); | |
2967 | } | |
2968 | END_CATCH | |
afedecd3 MM |
2969 | } |
2970 | ||
b20a6524 MM |
2971 | /* Alias for "target record". */ |
2972 | ||
2973 | static void | |
981a3fb3 | 2974 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2975 | { |
2976 | if (args != NULL && *args != 0) | |
2977 | error (_("Invalid argument.")); | |
2978 | ||
2979 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2980 | ||
2981 | TRY | |
2982 | { | |
95a6b0a1 | 2983 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2984 | } |
2985 | CATCH (exception, RETURN_MASK_ALL) | |
2986 | { | |
2987 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2988 | ||
2989 | TRY | |
2990 | { | |
95a6b0a1 | 2991 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2992 | } |
2993 | CATCH (exception, RETURN_MASK_ALL) | |
2994 | { | |
2995 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2996 | throw_exception (exception); | |
2997 | } | |
2998 | END_CATCH | |
2999 | } | |
3000 | END_CATCH | |
3001 | } | |
3002 | ||
67b5c0c1 MM |
3003 | /* The "set record btrace" command. */ |
3004 | ||
3005 | static void | |
981a3fb3 | 3006 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 3007 | { |
b85310e1 MM |
3008 | printf_unfiltered (_("\"set record btrace\" must be followed " |
3009 | "by an appropriate subcommand.\n")); | |
3010 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
3011 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
3012 | } |
3013 | ||
3014 | /* The "show record btrace" command. */ | |
3015 | ||
3016 | static void | |
981a3fb3 | 3017 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
3018 | { |
3019 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
3020 | } | |
3021 | ||
3022 | /* The "show record btrace replay-memory-access" command. */ | |
3023 | ||
3024 | static void | |
3025 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
3026 | struct cmd_list_element *c, const char *value) | |
3027 | { | |
3028 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
3029 | replay_memory_access); | |
3030 | } | |
3031 | ||
4a4495d6 MM |
3032 | /* The "set record btrace cpu none" command. */ |
3033 | ||
3034 | static void | |
3035 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
3036 | { | |
3037 | if (args != nullptr && *args != 0) | |
3038 | error (_("Trailing junk: '%s'."), args); | |
3039 | ||
3040 | record_btrace_cpu_state = CS_NONE; | |
3041 | } | |
3042 | ||
3043 | /* The "set record btrace cpu auto" command. */ | |
3044 | ||
3045 | static void | |
3046 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3047 | { | |
3048 | if (args != nullptr && *args != 0) | |
3049 | error (_("Trailing junk: '%s'."), args); | |
3050 | ||
3051 | record_btrace_cpu_state = CS_AUTO; | |
3052 | } | |
3053 | ||
3054 | /* The "set record btrace cpu" command. */ | |
3055 | ||
3056 | static void | |
3057 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3058 | { | |
3059 | if (args == nullptr) | |
3060 | args = ""; | |
3061 | ||
3062 | /* We use a hard-coded vendor string for now. */ | |
3063 | unsigned int family, model, stepping; | |
3064 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3065 | &model, &l1, &stepping, &l2); | |
3066 | if (matches == 3) | |
3067 | { | |
3068 | if (strlen (args) != l2) | |
3069 | error (_("Trailing junk: '%s'."), args + l2); | |
3070 | } | |
3071 | else if (matches == 2) | |
3072 | { | |
3073 | if (strlen (args) != l1) | |
3074 | error (_("Trailing junk: '%s'."), args + l1); | |
3075 | ||
3076 | stepping = 0; | |
3077 | } | |
3078 | else | |
3079 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3080 | ||
3081 | if (USHRT_MAX < family) | |
3082 | error (_("Cpu family too big.")); | |
3083 | ||
3084 | if (UCHAR_MAX < model) | |
3085 | error (_("Cpu model too big.")); | |
3086 | ||
3087 | if (UCHAR_MAX < stepping) | |
3088 | error (_("Cpu stepping too big.")); | |
3089 | ||
3090 | record_btrace_cpu.vendor = CV_INTEL; | |
3091 | record_btrace_cpu.family = family; | |
3092 | record_btrace_cpu.model = model; | |
3093 | record_btrace_cpu.stepping = stepping; | |
3094 | ||
3095 | record_btrace_cpu_state = CS_CPU; | |
3096 | } | |
3097 | ||
3098 | /* The "show record btrace cpu" command. */ | |
3099 | ||
3100 | static void | |
3101 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3102 | { | |
3103 | const char *cpu; | |
3104 | ||
3105 | if (args != nullptr && *args != 0) | |
3106 | error (_("Trailing junk: '%s'."), args); | |
3107 | ||
3108 | switch (record_btrace_cpu_state) | |
3109 | { | |
3110 | case CS_AUTO: | |
3111 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3112 | return; | |
3113 | ||
3114 | case CS_NONE: | |
3115 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3116 | return; | |
3117 | ||
3118 | case CS_CPU: | |
3119 | switch (record_btrace_cpu.vendor) | |
3120 | { | |
3121 | case CV_INTEL: | |
3122 | if (record_btrace_cpu.stepping == 0) | |
3123 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3124 | record_btrace_cpu.family, | |
3125 | record_btrace_cpu.model); | |
3126 | else | |
3127 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3128 | record_btrace_cpu.family, | |
3129 | record_btrace_cpu.model, | |
3130 | record_btrace_cpu.stepping); | |
3131 | return; | |
3132 | } | |
3133 | } | |
3134 | ||
3135 | error (_("Internal error: bad cpu state.")); | |
3136 | } | |
3137 | ||
3138 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3139 | |
3140 | static void | |
981a3fb3 | 3141 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3142 | { |
3143 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3144 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3145 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3146 | all_commands, gdb_stdout); | |
3147 | } | |
3148 | ||
3149 | /* The "show record btrace bts" command. */ | |
3150 | ||
3151 | static void | |
981a3fb3 | 3152 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3153 | { |
3154 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3155 | } | |
3156 | ||
b20a6524 MM |
3157 | /* The "set record btrace pt" command. */ |
3158 | ||
3159 | static void | |
981a3fb3 | 3160 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3161 | { |
3162 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3163 | "by an appropriate subcommand.\n")); | |
3164 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3165 | all_commands, gdb_stdout); | |
3166 | } | |
3167 | ||
3168 | /* The "show record btrace pt" command. */ | |
3169 | ||
3170 | static void | |
981a3fb3 | 3171 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3172 | { |
3173 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3174 | } | |
3175 | ||
3176 | /* The "record bts buffer-size" show value function. */ | |
3177 | ||
3178 | static void | |
3179 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3180 | struct cmd_list_element *c, | |
3181 | const char *value) | |
3182 | { | |
3183 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3184 | value); | |
3185 | } | |
3186 | ||
3187 | /* The "record pt buffer-size" show value function. */ | |
3188 | ||
3189 | static void | |
3190 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3191 | struct cmd_list_element *c, | |
3192 | const char *value) | |
3193 | { | |
3194 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3195 | value); | |
3196 | } | |
3197 | ||
afedecd3 MM |
3198 | /* Initialize btrace commands. */ |
3199 | ||
3200 | void | |
3201 | _initialize_record_btrace (void) | |
3202 | { | |
f4abbc16 MM |
3203 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3204 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3205 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3206 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3207 | ||
f4abbc16 MM |
3208 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3209 | _("\ | |
3210 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3211 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3212 | This format may not be available on all processors."), | |
3213 | &record_btrace_cmdlist); | |
3214 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3215 | ||
b20a6524 MM |
3216 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3217 | _("\ | |
bc504a31 | 3218 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3219 | This format may not be available on all processors."), |
3220 | &record_btrace_cmdlist); | |
3221 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3222 | ||
67b5c0c1 MM |
3223 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3224 | _("Set record options"), &set_record_btrace_cmdlist, | |
3225 | "set record btrace ", 0, &set_record_cmdlist); | |
3226 | ||
3227 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3228 | _("Show record options"), &show_record_btrace_cmdlist, | |
3229 | "show record btrace ", 0, &show_record_cmdlist); | |
3230 | ||
3231 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3232 | replay_memory_access_types, &replay_memory_access, _("\ | |
3233 | Set what memory accesses are allowed during replay."), _("\ | |
3234 | Show what memory accesses are allowed during replay."), | |
3235 | _("Default is READ-ONLY.\n\n\ | |
3236 | The btrace record target does not trace data.\n\ | |
3237 | The memory therefore corresponds to the live target and not \ | |
3238 | to the current replay position.\n\n\ | |
3239 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3240 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3241 | replay."), | |
3242 | NULL, cmd_show_replay_memory_access, | |
3243 | &set_record_btrace_cmdlist, | |
3244 | &show_record_btrace_cmdlist); | |
3245 | ||
4a4495d6 MM |
3246 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3247 | _("\ | |
3248 | Set the cpu to be used for trace decode.\n\n\ | |
3249 | The format is \"<vendor>:<identifier>\" or \"none\" or \"auto\" (default).\n\ | |
3250 | For vendor \"intel\" the format is \"<family>/<model>[/<stepping>]\".\n\n\ | |
3251 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ | |
3252 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3253 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3254 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3255 | When set to \"none\", errata workarounds are disabled."), | |
3256 | &set_record_btrace_cpu_cmdlist, | |
3257 | _("set record btrace cpu "), 1, | |
3258 | &set_record_btrace_cmdlist); | |
3259 | ||
3260 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3261 | Automatically determine the cpu to be used for trace decode."), | |
3262 | &set_record_btrace_cpu_cmdlist); | |
3263 | ||
3264 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3265 | Do not enable errata workarounds for trace decode."), | |
3266 | &set_record_btrace_cpu_cmdlist); | |
3267 | ||
3268 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3269 | Show the cpu to be used for trace decode."), | |
3270 | &show_record_btrace_cmdlist); | |
3271 | ||
d33501a5 MM |
3272 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3273 | _("Set record btrace bts options"), | |
3274 | &set_record_btrace_bts_cmdlist, | |
3275 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3276 | ||
3277 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3278 | _("Show record btrace bts options"), | |
3279 | &show_record_btrace_bts_cmdlist, | |
3280 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3281 | ||
3282 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3283 | &record_btrace_conf.bts.size, | |
3284 | _("Set the record/replay bts buffer size."), | |
3285 | _("Show the record/replay bts buffer size."), _("\ | |
3286 | When starting recording request a trace buffer of this size. \ | |
3287 | The actual buffer size may differ from the requested size. \ | |
3288 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3289 | Bigger buffers allow longer recording but also take more time to process \ | |
3290 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3291 | The trace buffer size may not be changed while recording."), NULL, |
3292 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3293 | &set_record_btrace_bts_cmdlist, |
3294 | &show_record_btrace_bts_cmdlist); | |
3295 | ||
b20a6524 MM |
3296 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3297 | _("Set record btrace pt options"), | |
3298 | &set_record_btrace_pt_cmdlist, | |
3299 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3300 | ||
3301 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3302 | _("Show record btrace pt options"), | |
3303 | &show_record_btrace_pt_cmdlist, | |
3304 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3305 | ||
3306 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3307 | &record_btrace_conf.pt.size, | |
3308 | _("Set the record/replay pt buffer size."), | |
3309 | _("Show the record/replay pt buffer size."), _("\ | |
3310 | Bigger buffers allow longer recording but also take more time to process \ | |
3311 | the recorded execution.\n\ | |
3312 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3313 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3314 | &set_record_btrace_pt_cmdlist, | |
3315 | &show_record_btrace_pt_cmdlist); | |
3316 | ||
afedecd3 | 3317 | add_target (&record_btrace_ops); |
0b722aec MM |
3318 | |
3319 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3320 | xcalloc, xfree); | |
d33501a5 MM |
3321 | |
3322 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3323 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3324 | } |