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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" |
00431a78 | 42 | #include "inferior.h" |
325fac50 | 43 | #include <algorithm> |
afedecd3 | 44 | |
d9f719f1 PA |
45 | static const target_info record_btrace_target_info = { |
46 | "record-btrace", | |
47 | N_("Branch tracing target"), | |
48 | N_("Collect control-flow trace and provide the execution history.") | |
49 | }; | |
50 | ||
afedecd3 | 51 | /* The target_ops of record-btrace. */ |
f6ac5f3d PA |
52 | |
53 | class record_btrace_target final : public target_ops | |
54 | { | |
55 | public: | |
56 | record_btrace_target () | |
57 | { to_stratum = record_stratum; } | |
58 | ||
d9f719f1 PA |
59 | const target_info &info () const override |
60 | { return record_btrace_target_info; } | |
f6ac5f3d | 61 | |
f6ac5f3d PA |
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 | ||
57810aa7 PA |
92 | bool record_is_replaying (ptid_t ptid) override; |
93 | bool record_will_replay (ptid_t ptid, int dir) override; | |
f6ac5f3d PA |
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; | |
57810aa7 | 123 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
124 | void goto_record_begin () override; |
125 | void goto_record_end () override; | |
126 | void goto_record (ULONGEST insn) override; | |
127 | ||
57810aa7 | 128 | bool can_execute_reverse () override; |
f6ac5f3d | 129 | |
57810aa7 PA |
130 | bool stopped_by_sw_breakpoint () override; |
131 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 132 | |
57810aa7 PA |
133 | bool stopped_by_hw_breakpoint () override; |
134 | bool supports_stopped_by_hw_breakpoint () override; | |
f6ac5f3d PA |
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 | 247 | { |
afedecd3 MM |
248 | DEBUG ("require"); |
249 | ||
00431a78 | 250 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
251 | error (_("No thread.")); |
252 | ||
00431a78 PA |
253 | thread_info *tp = inferior_thread (); |
254 | ||
cd4007e4 MM |
255 | validate_registers_access (); |
256 | ||
4a4495d6 | 257 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 258 | |
6e07b1d2 | 259 | if (btrace_is_empty (tp)) |
afedecd3 MM |
260 | error (_("No trace.")); |
261 | ||
066ce621 MM |
262 | return tp; |
263 | } | |
264 | ||
265 | /* Update the branch trace for the current thread and return a pointer to its | |
266 | branch trace information struct. | |
267 | ||
268 | Throws an error if there is no thread or no trace. This function never | |
269 | returns NULL. */ | |
270 | ||
271 | static struct btrace_thread_info * | |
272 | require_btrace (void) | |
273 | { | |
274 | struct thread_info *tp; | |
275 | ||
276 | tp = require_btrace_thread (); | |
277 | ||
278 | return &tp->btrace; | |
afedecd3 MM |
279 | } |
280 | ||
281 | /* Enable branch tracing for one thread. Warn on errors. */ | |
282 | ||
283 | static void | |
284 | record_btrace_enable_warn (struct thread_info *tp) | |
285 | { | |
492d29ea PA |
286 | TRY |
287 | { | |
288 | btrace_enable (tp, &record_btrace_conf); | |
289 | } | |
290 | CATCH (error, RETURN_MASK_ERROR) | |
291 | { | |
292 | warning ("%s", error.message); | |
293 | } | |
294 | END_CATCH | |
afedecd3 MM |
295 | } |
296 | ||
afedecd3 MM |
297 | /* Enable automatic tracing of new threads. */ |
298 | ||
299 | static void | |
300 | record_btrace_auto_enable (void) | |
301 | { | |
302 | DEBUG ("attach thread observer"); | |
303 | ||
76727919 TT |
304 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
305 | record_btrace_thread_observer_token); | |
afedecd3 MM |
306 | } |
307 | ||
308 | /* Disable automatic tracing of new threads. */ | |
309 | ||
310 | static void | |
311 | record_btrace_auto_disable (void) | |
312 | { | |
afedecd3 MM |
313 | DEBUG ("detach thread observer"); |
314 | ||
76727919 | 315 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
316 | } |
317 | ||
70ad5bff MM |
318 | /* The record-btrace async event handler function. */ |
319 | ||
320 | static void | |
321 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
322 | { | |
323 | inferior_event_handler (INF_REG_EVENT, NULL); | |
324 | } | |
325 | ||
c0272db5 TW |
326 | /* See record-btrace.h. */ |
327 | ||
328 | void | |
329 | record_btrace_push_target (void) | |
330 | { | |
331 | const char *format; | |
332 | ||
333 | record_btrace_auto_enable (); | |
334 | ||
335 | push_target (&record_btrace_ops); | |
336 | ||
337 | record_btrace_async_inferior_event_handler | |
338 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
339 | NULL); | |
340 | record_btrace_generating_corefile = 0; | |
341 | ||
342 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 343 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
344 | } |
345 | ||
228f1508 SM |
346 | /* Disable btrace on a set of threads on scope exit. */ |
347 | ||
348 | struct scoped_btrace_disable | |
349 | { | |
350 | scoped_btrace_disable () = default; | |
351 | ||
352 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
353 | ||
354 | ~scoped_btrace_disable () | |
355 | { | |
356 | for (thread_info *tp : m_threads) | |
357 | btrace_disable (tp); | |
358 | } | |
359 | ||
360 | void add_thread (thread_info *thread) | |
361 | { | |
362 | m_threads.push_front (thread); | |
363 | } | |
364 | ||
365 | void discard () | |
366 | { | |
367 | m_threads.clear (); | |
368 | } | |
369 | ||
370 | private: | |
371 | std::forward_list<thread_info *> m_threads; | |
372 | }; | |
373 | ||
d9f719f1 | 374 | /* Open target record-btrace. */ |
afedecd3 | 375 | |
d9f719f1 PA |
376 | static void |
377 | record_btrace_target_open (const char *args, int from_tty) | |
afedecd3 | 378 | { |
228f1508 SM |
379 | /* If we fail to enable btrace for one thread, disable it for the threads for |
380 | which it was successfully enabled. */ | |
381 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
382 | struct thread_info *tp; |
383 | ||
384 | DEBUG ("open"); | |
385 | ||
8213266a | 386 | record_preopen (); |
afedecd3 MM |
387 | |
388 | if (!target_has_execution) | |
389 | error (_("The program is not being run.")); | |
390 | ||
034f788c | 391 | ALL_NON_EXITED_THREADS (tp) |
5d5658a1 | 392 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 393 | { |
f4abbc16 | 394 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 395 | |
228f1508 | 396 | btrace_disable.add_thread (tp); |
afedecd3 MM |
397 | } |
398 | ||
c0272db5 | 399 | record_btrace_push_target (); |
afedecd3 | 400 | |
228f1508 | 401 | btrace_disable.discard (); |
afedecd3 MM |
402 | } |
403 | ||
f6ac5f3d | 404 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 405 | |
f6ac5f3d PA |
406 | void |
407 | record_btrace_target::stop_recording () | |
afedecd3 MM |
408 | { |
409 | struct thread_info *tp; | |
410 | ||
411 | DEBUG ("stop recording"); | |
412 | ||
413 | record_btrace_auto_disable (); | |
414 | ||
034f788c | 415 | ALL_NON_EXITED_THREADS (tp) |
afedecd3 MM |
416 | if (tp->btrace.target != NULL) |
417 | btrace_disable (tp); | |
418 | } | |
419 | ||
f6ac5f3d | 420 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 421 | |
f6ac5f3d PA |
422 | void |
423 | record_btrace_target::disconnect (const char *args, | |
424 | int from_tty) | |
c0272db5 | 425 | { |
b6a8c27b | 426 | struct target_ops *beneath = this->beneath (); |
c0272db5 TW |
427 | |
428 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 429 | unpush_target (this); |
c0272db5 TW |
430 | |
431 | /* Forward disconnect. */ | |
f6ac5f3d | 432 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
433 | } |
434 | ||
f6ac5f3d | 435 | /* The close method of target record-btrace. */ |
afedecd3 | 436 | |
f6ac5f3d PA |
437 | void |
438 | record_btrace_target::close () | |
afedecd3 | 439 | { |
568e808b MM |
440 | struct thread_info *tp; |
441 | ||
70ad5bff MM |
442 | if (record_btrace_async_inferior_event_handler != NULL) |
443 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
444 | ||
99c819ee MM |
445 | /* Make sure automatic recording gets disabled even if we did not stop |
446 | recording before closing the record-btrace target. */ | |
447 | record_btrace_auto_disable (); | |
448 | ||
568e808b MM |
449 | /* We should have already stopped recording. |
450 | Tear down btrace in case we have not. */ | |
034f788c | 451 | ALL_NON_EXITED_THREADS (tp) |
568e808b | 452 | btrace_teardown (tp); |
afedecd3 MM |
453 | } |
454 | ||
f6ac5f3d | 455 | /* The async method of target record-btrace. */ |
b7d2e916 | 456 | |
f6ac5f3d PA |
457 | void |
458 | record_btrace_target::async (int enable) | |
b7d2e916 | 459 | { |
6a3753b3 | 460 | if (enable) |
b7d2e916 PA |
461 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
462 | else | |
463 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
464 | ||
b6a8c27b | 465 | this->beneath ()->async (enable); |
b7d2e916 PA |
466 | } |
467 | ||
d33501a5 MM |
468 | /* Adjusts the size and returns a human readable size suffix. */ |
469 | ||
470 | static const char * | |
471 | record_btrace_adjust_size (unsigned int *size) | |
472 | { | |
473 | unsigned int sz; | |
474 | ||
475 | sz = *size; | |
476 | ||
477 | if ((sz & ((1u << 30) - 1)) == 0) | |
478 | { | |
479 | *size = sz >> 30; | |
480 | return "GB"; | |
481 | } | |
482 | else if ((sz & ((1u << 20) - 1)) == 0) | |
483 | { | |
484 | *size = sz >> 20; | |
485 | return "MB"; | |
486 | } | |
487 | else if ((sz & ((1u << 10) - 1)) == 0) | |
488 | { | |
489 | *size = sz >> 10; | |
490 | return "kB"; | |
491 | } | |
492 | else | |
493 | return ""; | |
494 | } | |
495 | ||
496 | /* Print a BTS configuration. */ | |
497 | ||
498 | static void | |
499 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
500 | { | |
501 | const char *suffix; | |
502 | unsigned int size; | |
503 | ||
504 | size = conf->size; | |
505 | if (size > 0) | |
506 | { | |
507 | suffix = record_btrace_adjust_size (&size); | |
508 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
509 | } | |
510 | } | |
511 | ||
bc504a31 | 512 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
513 | |
514 | static void | |
515 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
516 | { | |
517 | const char *suffix; | |
518 | unsigned int size; | |
519 | ||
520 | size = conf->size; | |
521 | if (size > 0) | |
522 | { | |
523 | suffix = record_btrace_adjust_size (&size); | |
524 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
525 | } | |
526 | } | |
527 | ||
d33501a5 MM |
528 | /* Print a branch tracing configuration. */ |
529 | ||
530 | static void | |
531 | record_btrace_print_conf (const struct btrace_config *conf) | |
532 | { | |
533 | printf_unfiltered (_("Recording format: %s.\n"), | |
534 | btrace_format_string (conf->format)); | |
535 | ||
536 | switch (conf->format) | |
537 | { | |
538 | case BTRACE_FORMAT_NONE: | |
539 | return; | |
540 | ||
541 | case BTRACE_FORMAT_BTS: | |
542 | record_btrace_print_bts_conf (&conf->bts); | |
543 | return; | |
b20a6524 MM |
544 | |
545 | case BTRACE_FORMAT_PT: | |
546 | record_btrace_print_pt_conf (&conf->pt); | |
547 | return; | |
d33501a5 MM |
548 | } |
549 | ||
550 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
551 | } | |
552 | ||
f6ac5f3d | 553 | /* The info_record method of target record-btrace. */ |
afedecd3 | 554 | |
f6ac5f3d PA |
555 | void |
556 | record_btrace_target::info_record () | |
afedecd3 MM |
557 | { |
558 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 559 | const struct btrace_config *conf; |
afedecd3 | 560 | struct thread_info *tp; |
31fd9caa | 561 | unsigned int insns, calls, gaps; |
afedecd3 MM |
562 | |
563 | DEBUG ("info"); | |
564 | ||
565 | tp = find_thread_ptid (inferior_ptid); | |
566 | if (tp == NULL) | |
567 | error (_("No thread.")); | |
568 | ||
cd4007e4 MM |
569 | validate_registers_access (); |
570 | ||
f4abbc16 MM |
571 | btinfo = &tp->btrace; |
572 | ||
f6ac5f3d | 573 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 574 | if (conf != NULL) |
d33501a5 | 575 | record_btrace_print_conf (conf); |
f4abbc16 | 576 | |
4a4495d6 | 577 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 578 | |
23a7fe75 MM |
579 | insns = 0; |
580 | calls = 0; | |
31fd9caa | 581 | gaps = 0; |
23a7fe75 | 582 | |
6e07b1d2 | 583 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
584 | { |
585 | struct btrace_call_iterator call; | |
586 | struct btrace_insn_iterator insn; | |
587 | ||
588 | btrace_call_end (&call, btinfo); | |
589 | btrace_call_prev (&call, 1); | |
5de9129b | 590 | calls = btrace_call_number (&call); |
23a7fe75 MM |
591 | |
592 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 593 | insns = btrace_insn_number (&insn); |
31fd9caa | 594 | |
69090cee TW |
595 | /* If the last instruction is not a gap, it is the current instruction |
596 | that is not actually part of the record. */ | |
597 | if (btrace_insn_get (&insn) != NULL) | |
598 | insns -= 1; | |
31fd9caa MM |
599 | |
600 | gaps = btinfo->ngaps; | |
23a7fe75 | 601 | } |
afedecd3 | 602 | |
31fd9caa | 603 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 PA |
604 | "for thread %s (%s).\n"), insns, calls, gaps, |
605 | print_thread_id (tp), target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
606 | |
607 | if (btrace_is_replaying (tp)) | |
608 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
609 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
610 | } |
611 | ||
31fd9caa MM |
612 | /* Print a decode error. */ |
613 | ||
614 | static void | |
615 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
616 | enum btrace_format format) | |
617 | { | |
508352a9 | 618 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 619 | |
112e8700 | 620 | uiout->text (_("[")); |
508352a9 TW |
621 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
622 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 623 | { |
112e8700 SM |
624 | uiout->text (_("decode error (")); |
625 | uiout->field_int ("errcode", errcode); | |
626 | uiout->text (_("): ")); | |
31fd9caa | 627 | } |
112e8700 SM |
628 | uiout->text (errstr); |
629 | uiout->text (_("]\n")); | |
31fd9caa MM |
630 | } |
631 | ||
afedecd3 MM |
632 | /* Print an unsigned int. */ |
633 | ||
634 | static void | |
635 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
636 | { | |
112e8700 | 637 | uiout->field_fmt (fld, "%u", val); |
afedecd3 MM |
638 | } |
639 | ||
f94cc897 MM |
640 | /* A range of source lines. */ |
641 | ||
642 | struct btrace_line_range | |
643 | { | |
644 | /* The symtab this line is from. */ | |
645 | struct symtab *symtab; | |
646 | ||
647 | /* The first line (inclusive). */ | |
648 | int begin; | |
649 | ||
650 | /* The last line (exclusive). */ | |
651 | int end; | |
652 | }; | |
653 | ||
654 | /* Construct a line range. */ | |
655 | ||
656 | static struct btrace_line_range | |
657 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
658 | { | |
659 | struct btrace_line_range range; | |
660 | ||
661 | range.symtab = symtab; | |
662 | range.begin = begin; | |
663 | range.end = end; | |
664 | ||
665 | return range; | |
666 | } | |
667 | ||
668 | /* Add a line to a line range. */ | |
669 | ||
670 | static struct btrace_line_range | |
671 | btrace_line_range_add (struct btrace_line_range range, int line) | |
672 | { | |
673 | if (range.end <= range.begin) | |
674 | { | |
675 | /* This is the first entry. */ | |
676 | range.begin = line; | |
677 | range.end = line + 1; | |
678 | } | |
679 | else if (line < range.begin) | |
680 | range.begin = line; | |
681 | else if (range.end < line) | |
682 | range.end = line; | |
683 | ||
684 | return range; | |
685 | } | |
686 | ||
687 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
688 | ||
689 | static int | |
690 | btrace_line_range_is_empty (struct btrace_line_range range) | |
691 | { | |
692 | return range.end <= range.begin; | |
693 | } | |
694 | ||
695 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
696 | ||
697 | static int | |
698 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
699 | struct btrace_line_range rhs) | |
700 | { | |
701 | return ((lhs.symtab == rhs.symtab) | |
702 | && (lhs.begin <= rhs.begin) | |
703 | && (rhs.end <= lhs.end)); | |
704 | } | |
705 | ||
706 | /* Find the line range associated with PC. */ | |
707 | ||
708 | static struct btrace_line_range | |
709 | btrace_find_line_range (CORE_ADDR pc) | |
710 | { | |
711 | struct btrace_line_range range; | |
712 | struct linetable_entry *lines; | |
713 | struct linetable *ltable; | |
714 | struct symtab *symtab; | |
715 | int nlines, i; | |
716 | ||
717 | symtab = find_pc_line_symtab (pc); | |
718 | if (symtab == NULL) | |
719 | return btrace_mk_line_range (NULL, 0, 0); | |
720 | ||
721 | ltable = SYMTAB_LINETABLE (symtab); | |
722 | if (ltable == NULL) | |
723 | return btrace_mk_line_range (symtab, 0, 0); | |
724 | ||
725 | nlines = ltable->nitems; | |
726 | lines = ltable->item; | |
727 | if (nlines <= 0) | |
728 | return btrace_mk_line_range (symtab, 0, 0); | |
729 | ||
730 | range = btrace_mk_line_range (symtab, 0, 0); | |
731 | for (i = 0; i < nlines - 1; i++) | |
732 | { | |
733 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
734 | range = btrace_line_range_add (range, lines[i].line); | |
735 | } | |
736 | ||
737 | return range; | |
738 | } | |
739 | ||
740 | /* Print source lines in LINES to UIOUT. | |
741 | ||
742 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
743 | instructions corresponding to that source line. When printing a new source | |
744 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
745 | the new source line. If the source line range in LINES is not empty, this | |
746 | function will leave the cleanup chain for the last printed source line open | |
747 | so instructions can be added to it. */ | |
748 | ||
749 | static void | |
750 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
751 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
752 | gdb::optional<ui_out_emit_list> *asm_list, | |
753 | gdb_disassembly_flags flags) | |
f94cc897 | 754 | { |
8d297bbf | 755 | print_source_lines_flags psl_flags; |
f94cc897 | 756 | |
f94cc897 MM |
757 | if (flags & DISASSEMBLY_FILENAME) |
758 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
759 | ||
7ea78b59 | 760 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 761 | { |
7ea78b59 | 762 | asm_list->reset (); |
f94cc897 | 763 | |
7ea78b59 | 764 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
765 | |
766 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
767 | ||
7ea78b59 | 768 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
769 | } |
770 | } | |
771 | ||
afedecd3 MM |
772 | /* Disassemble a section of the recorded instruction trace. */ |
773 | ||
774 | static void | |
23a7fe75 | 775 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 776 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 777 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
778 | const struct btrace_insn_iterator *end, |
779 | gdb_disassembly_flags flags) | |
afedecd3 | 780 | { |
9a24775b PA |
781 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
782 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 783 | |
f94cc897 MM |
784 | flags |= DISASSEMBLY_SPECULATIVE; |
785 | ||
7ea78b59 SM |
786 | struct gdbarch *gdbarch = target_gdbarch (); |
787 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 788 | |
7ea78b59 | 789 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 790 | |
7ea78b59 SM |
791 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
792 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 793 | |
8b172ce7 PA |
794 | gdb_pretty_print_disassembler disasm (gdbarch); |
795 | ||
7ea78b59 SM |
796 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
797 | btrace_insn_next (&it, 1)) | |
afedecd3 | 798 | { |
23a7fe75 MM |
799 | const struct btrace_insn *insn; |
800 | ||
801 | insn = btrace_insn_get (&it); | |
802 | ||
31fd9caa MM |
803 | /* A NULL instruction indicates a gap in the trace. */ |
804 | if (insn == NULL) | |
805 | { | |
806 | const struct btrace_config *conf; | |
807 | ||
808 | conf = btrace_conf (btinfo); | |
afedecd3 | 809 | |
31fd9caa MM |
810 | /* We have trace so we must have a configuration. */ |
811 | gdb_assert (conf != NULL); | |
812 | ||
69090cee TW |
813 | uiout->field_fmt ("insn-number", "%u", |
814 | btrace_insn_number (&it)); | |
815 | uiout->text ("\t"); | |
816 | ||
817 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
818 | conf->format); |
819 | } | |
820 | else | |
821 | { | |
f94cc897 | 822 | struct disasm_insn dinsn; |
da8c46d2 | 823 | |
f94cc897 | 824 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 825 | { |
f94cc897 MM |
826 | struct btrace_line_range lines; |
827 | ||
828 | lines = btrace_find_line_range (insn->pc); | |
829 | if (!btrace_line_range_is_empty (lines) | |
830 | && !btrace_line_range_contains_range (last_lines, lines)) | |
831 | { | |
7ea78b59 SM |
832 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
833 | flags); | |
f94cc897 MM |
834 | last_lines = lines; |
835 | } | |
7ea78b59 | 836 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 837 | { |
7ea78b59 SM |
838 | gdb_assert (!asm_list.has_value ()); |
839 | ||
840 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
841 | ||
f94cc897 | 842 | /* No source information. */ |
7ea78b59 | 843 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
844 | } |
845 | ||
7ea78b59 SM |
846 | gdb_assert (src_and_asm_tuple.has_value ()); |
847 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 848 | } |
da8c46d2 | 849 | |
f94cc897 MM |
850 | memset (&dinsn, 0, sizeof (dinsn)); |
851 | dinsn.number = btrace_insn_number (&it); | |
852 | dinsn.addr = insn->pc; | |
31fd9caa | 853 | |
da8c46d2 | 854 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 855 | dinsn.is_speculative = 1; |
da8c46d2 | 856 | |
8b172ce7 | 857 | disasm.pretty_print_insn (uiout, &dinsn, flags); |
31fd9caa | 858 | } |
afedecd3 MM |
859 | } |
860 | } | |
861 | ||
f6ac5f3d | 862 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 863 | |
f6ac5f3d PA |
864 | void |
865 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
866 | { |
867 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
868 | struct btrace_insn_history *history; |
869 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 870 | struct ui_out *uiout; |
23a7fe75 | 871 | unsigned int context, covered; |
afedecd3 MM |
872 | |
873 | uiout = current_uiout; | |
2e783024 | 874 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 875 | context = abs (size); |
afedecd3 MM |
876 | if (context == 0) |
877 | error (_("Bad record instruction-history-size.")); | |
878 | ||
23a7fe75 MM |
879 | btinfo = require_btrace (); |
880 | history = btinfo->insn_history; | |
881 | if (history == NULL) | |
afedecd3 | 882 | { |
07bbe694 | 883 | struct btrace_insn_iterator *replay; |
afedecd3 | 884 | |
9a24775b | 885 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 886 | |
07bbe694 MM |
887 | /* If we're replaying, we start at the replay position. Otherwise, we |
888 | start at the tail of the trace. */ | |
889 | replay = btinfo->replay; | |
890 | if (replay != NULL) | |
891 | begin = *replay; | |
892 | else | |
893 | btrace_insn_end (&begin, btinfo); | |
894 | ||
895 | /* We start from here and expand in the requested direction. Then we | |
896 | expand in the other direction, as well, to fill up any remaining | |
897 | context. */ | |
898 | end = begin; | |
899 | if (size < 0) | |
900 | { | |
901 | /* We want the current position covered, as well. */ | |
902 | covered = btrace_insn_next (&end, 1); | |
903 | covered += btrace_insn_prev (&begin, context - covered); | |
904 | covered += btrace_insn_next (&end, context - covered); | |
905 | } | |
906 | else | |
907 | { | |
908 | covered = btrace_insn_next (&end, context); | |
909 | covered += btrace_insn_prev (&begin, context - covered); | |
910 | } | |
afedecd3 MM |
911 | } |
912 | else | |
913 | { | |
23a7fe75 MM |
914 | begin = history->begin; |
915 | end = history->end; | |
afedecd3 | 916 | |
9a24775b | 917 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 918 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 919 | |
23a7fe75 MM |
920 | if (size < 0) |
921 | { | |
922 | end = begin; | |
923 | covered = btrace_insn_prev (&begin, context); | |
924 | } | |
925 | else | |
926 | { | |
927 | begin = end; | |
928 | covered = btrace_insn_next (&end, context); | |
929 | } | |
afedecd3 MM |
930 | } |
931 | ||
23a7fe75 | 932 | if (covered > 0) |
31fd9caa | 933 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
934 | else |
935 | { | |
936 | if (size < 0) | |
937 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
938 | else | |
939 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
940 | } | |
afedecd3 | 941 | |
23a7fe75 | 942 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
943 | } |
944 | ||
f6ac5f3d | 945 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 946 | |
f6ac5f3d PA |
947 | void |
948 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
949 | gdb_disassembly_flags flags) | |
afedecd3 MM |
950 | { |
951 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 952 | struct btrace_insn_iterator begin, end; |
afedecd3 | 953 | struct ui_out *uiout; |
23a7fe75 MM |
954 | unsigned int low, high; |
955 | int found; | |
afedecd3 MM |
956 | |
957 | uiout = current_uiout; | |
2e783024 | 958 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
959 | low = from; |
960 | high = to; | |
afedecd3 | 961 | |
9a24775b | 962 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
963 | |
964 | /* Check for wrap-arounds. */ | |
23a7fe75 | 965 | if (low != from || high != to) |
afedecd3 MM |
966 | error (_("Bad range.")); |
967 | ||
0688d04e | 968 | if (high < low) |
afedecd3 MM |
969 | error (_("Bad range.")); |
970 | ||
23a7fe75 | 971 | btinfo = require_btrace (); |
afedecd3 | 972 | |
23a7fe75 MM |
973 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
974 | if (found == 0) | |
975 | error (_("Range out of bounds.")); | |
afedecd3 | 976 | |
23a7fe75 MM |
977 | found = btrace_find_insn_by_number (&end, btinfo, high); |
978 | if (found == 0) | |
0688d04e MM |
979 | { |
980 | /* Silently truncate the range. */ | |
981 | btrace_insn_end (&end, btinfo); | |
982 | } | |
983 | else | |
984 | { | |
985 | /* We want both begin and end to be inclusive. */ | |
986 | btrace_insn_next (&end, 1); | |
987 | } | |
afedecd3 | 988 | |
31fd9caa | 989 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 990 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
991 | } |
992 | ||
f6ac5f3d | 993 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 994 | |
f6ac5f3d PA |
995 | void |
996 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
997 | gdb_disassembly_flags flags) | |
afedecd3 MM |
998 | { |
999 | ULONGEST begin, end, context; | |
1000 | ||
1001 | context = abs (size); | |
0688d04e MM |
1002 | if (context == 0) |
1003 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
1004 | |
1005 | if (size < 0) | |
1006 | { | |
1007 | end = from; | |
1008 | ||
1009 | if (from < context) | |
1010 | begin = 0; | |
1011 | else | |
0688d04e | 1012 | begin = from - context + 1; |
afedecd3 MM |
1013 | } |
1014 | else | |
1015 | { | |
1016 | begin = from; | |
0688d04e | 1017 | end = from + context - 1; |
afedecd3 MM |
1018 | |
1019 | /* Check for wrap-around. */ | |
1020 | if (end < begin) | |
1021 | end = ULONGEST_MAX; | |
1022 | } | |
1023 | ||
f6ac5f3d | 1024 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1025 | } |
1026 | ||
1027 | /* Print the instruction number range for a function call history line. */ | |
1028 | ||
1029 | static void | |
23a7fe75 MM |
1030 | btrace_call_history_insn_range (struct ui_out *uiout, |
1031 | const struct btrace_function *bfun) | |
afedecd3 | 1032 | { |
7acbe133 MM |
1033 | unsigned int begin, end, size; |
1034 | ||
0860c437 | 1035 | size = bfun->insn.size (); |
7acbe133 | 1036 | gdb_assert (size > 0); |
afedecd3 | 1037 | |
23a7fe75 | 1038 | begin = bfun->insn_offset; |
7acbe133 | 1039 | end = begin + size - 1; |
afedecd3 | 1040 | |
23a7fe75 | 1041 | ui_out_field_uint (uiout, "insn begin", begin); |
112e8700 | 1042 | uiout->text (","); |
23a7fe75 | 1043 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
1044 | } |
1045 | ||
ce0dfbea MM |
1046 | /* Compute the lowest and highest source line for the instructions in BFUN |
1047 | and return them in PBEGIN and PEND. | |
1048 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1049 | result from inlining or macro expansion. */ | |
1050 | ||
1051 | static void | |
1052 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1053 | int *pbegin, int *pend) | |
1054 | { | |
ce0dfbea MM |
1055 | struct symtab *symtab; |
1056 | struct symbol *sym; | |
ce0dfbea MM |
1057 | int begin, end; |
1058 | ||
1059 | begin = INT_MAX; | |
1060 | end = INT_MIN; | |
1061 | ||
1062 | sym = bfun->sym; | |
1063 | if (sym == NULL) | |
1064 | goto out; | |
1065 | ||
1066 | symtab = symbol_symtab (sym); | |
1067 | ||
0860c437 | 1068 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1069 | { |
1070 | struct symtab_and_line sal; | |
1071 | ||
0860c437 | 1072 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1073 | if (sal.symtab != symtab || sal.line == 0) |
1074 | continue; | |
1075 | ||
325fac50 PA |
1076 | begin = std::min (begin, sal.line); |
1077 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1078 | } |
1079 | ||
1080 | out: | |
1081 | *pbegin = begin; | |
1082 | *pend = end; | |
1083 | } | |
1084 | ||
afedecd3 MM |
1085 | /* Print the source line information for a function call history line. */ |
1086 | ||
1087 | static void | |
23a7fe75 MM |
1088 | btrace_call_history_src_line (struct ui_out *uiout, |
1089 | const struct btrace_function *bfun) | |
afedecd3 MM |
1090 | { |
1091 | struct symbol *sym; | |
23a7fe75 | 1092 | int begin, end; |
afedecd3 MM |
1093 | |
1094 | sym = bfun->sym; | |
1095 | if (sym == NULL) | |
1096 | return; | |
1097 | ||
112e8700 | 1098 | uiout->field_string ("file", |
08be3fe3 | 1099 | symtab_to_filename_for_display (symbol_symtab (sym))); |
afedecd3 | 1100 | |
ce0dfbea | 1101 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1102 | if (end < begin) |
afedecd3 MM |
1103 | return; |
1104 | ||
112e8700 SM |
1105 | uiout->text (":"); |
1106 | uiout->field_int ("min line", begin); | |
afedecd3 | 1107 | |
23a7fe75 | 1108 | if (end == begin) |
afedecd3 MM |
1109 | return; |
1110 | ||
112e8700 SM |
1111 | uiout->text (","); |
1112 | uiout->field_int ("max line", end); | |
afedecd3 MM |
1113 | } |
1114 | ||
0b722aec MM |
1115 | /* Get the name of a branch trace function. */ |
1116 | ||
1117 | static const char * | |
1118 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1119 | { | |
1120 | struct minimal_symbol *msym; | |
1121 | struct symbol *sym; | |
1122 | ||
1123 | if (bfun == NULL) | |
1124 | return "??"; | |
1125 | ||
1126 | msym = bfun->msym; | |
1127 | sym = bfun->sym; | |
1128 | ||
1129 | if (sym != NULL) | |
1130 | return SYMBOL_PRINT_NAME (sym); | |
1131 | else if (msym != NULL) | |
efd66ac6 | 1132 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1133 | else |
1134 | return "??"; | |
1135 | } | |
1136 | ||
afedecd3 MM |
1137 | /* Disassemble a section of the recorded function trace. */ |
1138 | ||
1139 | static void | |
23a7fe75 | 1140 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1141 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1142 | const struct btrace_call_iterator *begin, |
1143 | const struct btrace_call_iterator *end, | |
8d297bbf | 1144 | int int_flags) |
afedecd3 | 1145 | { |
23a7fe75 | 1146 | struct btrace_call_iterator it; |
8d297bbf | 1147 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1148 | |
8d297bbf | 1149 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1150 | btrace_call_number (end)); |
afedecd3 | 1151 | |
23a7fe75 | 1152 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1153 | { |
23a7fe75 MM |
1154 | const struct btrace_function *bfun; |
1155 | struct minimal_symbol *msym; | |
1156 | struct symbol *sym; | |
1157 | ||
1158 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1159 | sym = bfun->sym; |
0b722aec | 1160 | msym = bfun->msym; |
23a7fe75 | 1161 | |
afedecd3 | 1162 | /* Print the function index. */ |
23a7fe75 | 1163 | ui_out_field_uint (uiout, "index", bfun->number); |
112e8700 | 1164 | uiout->text ("\t"); |
afedecd3 | 1165 | |
31fd9caa MM |
1166 | /* Indicate gaps in the trace. */ |
1167 | if (bfun->errcode != 0) | |
1168 | { | |
1169 | const struct btrace_config *conf; | |
1170 | ||
1171 | conf = btrace_conf (btinfo); | |
1172 | ||
1173 | /* We have trace so we must have a configuration. */ | |
1174 | gdb_assert (conf != NULL); | |
1175 | ||
1176 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1177 | ||
1178 | continue; | |
1179 | } | |
1180 | ||
8710b709 MM |
1181 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1182 | { | |
1183 | int level = bfun->level + btinfo->level, i; | |
1184 | ||
1185 | for (i = 0; i < level; ++i) | |
112e8700 | 1186 | uiout->text (" "); |
8710b709 MM |
1187 | } |
1188 | ||
1189 | if (sym != NULL) | |
112e8700 | 1190 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym)); |
8710b709 | 1191 | else if (msym != NULL) |
112e8700 SM |
1192 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym)); |
1193 | else if (!uiout->is_mi_like_p ()) | |
1194 | uiout->field_string ("function", "??"); | |
8710b709 | 1195 | |
1e038f67 | 1196 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1197 | { |
112e8700 | 1198 | uiout->text (_("\tinst ")); |
23a7fe75 | 1199 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1200 | } |
1201 | ||
1e038f67 | 1202 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1203 | { |
112e8700 | 1204 | uiout->text (_("\tat ")); |
23a7fe75 | 1205 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1206 | } |
1207 | ||
112e8700 | 1208 | uiout->text ("\n"); |
afedecd3 MM |
1209 | } |
1210 | } | |
1211 | ||
f6ac5f3d | 1212 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1213 | |
f6ac5f3d PA |
1214 | void |
1215 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1216 | { |
1217 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1218 | struct btrace_call_history *history; |
1219 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1220 | struct ui_out *uiout; |
23a7fe75 | 1221 | unsigned int context, covered; |
afedecd3 MM |
1222 | |
1223 | uiout = current_uiout; | |
2e783024 | 1224 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1225 | context = abs (size); |
afedecd3 MM |
1226 | if (context == 0) |
1227 | error (_("Bad record function-call-history-size.")); | |
1228 | ||
23a7fe75 MM |
1229 | btinfo = require_btrace (); |
1230 | history = btinfo->call_history; | |
1231 | if (history == NULL) | |
afedecd3 | 1232 | { |
07bbe694 | 1233 | struct btrace_insn_iterator *replay; |
afedecd3 | 1234 | |
0cb7c7b0 | 1235 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1236 | |
07bbe694 MM |
1237 | /* If we're replaying, we start at the replay position. Otherwise, we |
1238 | start at the tail of the trace. */ | |
1239 | replay = btinfo->replay; | |
1240 | if (replay != NULL) | |
1241 | { | |
07bbe694 | 1242 | begin.btinfo = btinfo; |
a0f1b963 | 1243 | begin.index = replay->call_index; |
07bbe694 MM |
1244 | } |
1245 | else | |
1246 | btrace_call_end (&begin, btinfo); | |
1247 | ||
1248 | /* We start from here and expand in the requested direction. Then we | |
1249 | expand in the other direction, as well, to fill up any remaining | |
1250 | context. */ | |
1251 | end = begin; | |
1252 | if (size < 0) | |
1253 | { | |
1254 | /* We want the current position covered, as well. */ | |
1255 | covered = btrace_call_next (&end, 1); | |
1256 | covered += btrace_call_prev (&begin, context - covered); | |
1257 | covered += btrace_call_next (&end, context - covered); | |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | covered = btrace_call_next (&end, context); | |
1262 | covered += btrace_call_prev (&begin, context- covered); | |
1263 | } | |
afedecd3 MM |
1264 | } |
1265 | else | |
1266 | { | |
23a7fe75 MM |
1267 | begin = history->begin; |
1268 | end = history->end; | |
afedecd3 | 1269 | |
0cb7c7b0 | 1270 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1271 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1272 | |
23a7fe75 MM |
1273 | if (size < 0) |
1274 | { | |
1275 | end = begin; | |
1276 | covered = btrace_call_prev (&begin, context); | |
1277 | } | |
1278 | else | |
1279 | { | |
1280 | begin = end; | |
1281 | covered = btrace_call_next (&end, context); | |
1282 | } | |
afedecd3 MM |
1283 | } |
1284 | ||
23a7fe75 | 1285 | if (covered > 0) |
8710b709 | 1286 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1287 | else |
1288 | { | |
1289 | if (size < 0) | |
1290 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1291 | else | |
1292 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1293 | } | |
afedecd3 | 1294 | |
23a7fe75 | 1295 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1296 | } |
1297 | ||
f6ac5f3d | 1298 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1299 | |
f6ac5f3d PA |
1300 | void |
1301 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1302 | record_print_flags flags) | |
afedecd3 MM |
1303 | { |
1304 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1305 | struct btrace_call_iterator begin, end; |
afedecd3 | 1306 | struct ui_out *uiout; |
23a7fe75 MM |
1307 | unsigned int low, high; |
1308 | int found; | |
afedecd3 MM |
1309 | |
1310 | uiout = current_uiout; | |
2e783024 | 1311 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1312 | low = from; |
1313 | high = to; | |
afedecd3 | 1314 | |
0cb7c7b0 | 1315 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1316 | |
1317 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1318 | if (low != from || high != to) |
afedecd3 MM |
1319 | error (_("Bad range.")); |
1320 | ||
0688d04e | 1321 | if (high < low) |
afedecd3 MM |
1322 | error (_("Bad range.")); |
1323 | ||
23a7fe75 | 1324 | btinfo = require_btrace (); |
afedecd3 | 1325 | |
23a7fe75 MM |
1326 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1327 | if (found == 0) | |
1328 | error (_("Range out of bounds.")); | |
afedecd3 | 1329 | |
23a7fe75 MM |
1330 | found = btrace_find_call_by_number (&end, btinfo, high); |
1331 | if (found == 0) | |
0688d04e MM |
1332 | { |
1333 | /* Silently truncate the range. */ | |
1334 | btrace_call_end (&end, btinfo); | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | /* We want both begin and end to be inclusive. */ | |
1339 | btrace_call_next (&end, 1); | |
1340 | } | |
afedecd3 | 1341 | |
8710b709 | 1342 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1343 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1344 | } |
1345 | ||
f6ac5f3d | 1346 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1347 | |
f6ac5f3d PA |
1348 | void |
1349 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1350 | record_print_flags flags) | |
afedecd3 MM |
1351 | { |
1352 | ULONGEST begin, end, context; | |
1353 | ||
1354 | context = abs (size); | |
0688d04e MM |
1355 | if (context == 0) |
1356 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1357 | |
1358 | if (size < 0) | |
1359 | { | |
1360 | end = from; | |
1361 | ||
1362 | if (from < context) | |
1363 | begin = 0; | |
1364 | else | |
0688d04e | 1365 | begin = from - context + 1; |
afedecd3 MM |
1366 | } |
1367 | else | |
1368 | { | |
1369 | begin = from; | |
0688d04e | 1370 | end = from + context - 1; |
afedecd3 MM |
1371 | |
1372 | /* Check for wrap-around. */ | |
1373 | if (end < begin) | |
1374 | end = ULONGEST_MAX; | |
1375 | } | |
1376 | ||
f6ac5f3d | 1377 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1378 | } |
1379 | ||
f6ac5f3d | 1380 | /* The record_method method of target record-btrace. */ |
b158a20f | 1381 | |
f6ac5f3d PA |
1382 | enum record_method |
1383 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1384 | { |
b158a20f TW |
1385 | struct thread_info * const tp = find_thread_ptid (ptid); |
1386 | ||
1387 | if (tp == NULL) | |
1388 | error (_("No thread.")); | |
1389 | ||
1390 | if (tp->btrace.target == NULL) | |
1391 | return RECORD_METHOD_NONE; | |
1392 | ||
1393 | return RECORD_METHOD_BTRACE; | |
1394 | } | |
1395 | ||
f6ac5f3d | 1396 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1397 | |
57810aa7 | 1398 | bool |
f6ac5f3d | 1399 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 MM |
1400 | { |
1401 | struct thread_info *tp; | |
1402 | ||
034f788c | 1403 | ALL_NON_EXITED_THREADS (tp) |
a52eab48 | 1404 | if (ptid_match (tp->ptid, ptid) && btrace_is_replaying (tp)) |
57810aa7 | 1405 | return true; |
07bbe694 | 1406 | |
57810aa7 | 1407 | return false; |
07bbe694 MM |
1408 | } |
1409 | ||
f6ac5f3d | 1410 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1411 | |
57810aa7 | 1412 | bool |
f6ac5f3d | 1413 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1414 | { |
f6ac5f3d | 1415 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1416 | } |
1417 | ||
f6ac5f3d | 1418 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1419 | |
f6ac5f3d PA |
1420 | enum target_xfer_status |
1421 | record_btrace_target::xfer_partial (enum target_object object, | |
1422 | const char *annex, gdb_byte *readbuf, | |
1423 | const gdb_byte *writebuf, ULONGEST offset, | |
1424 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1425 | { |
633785ff | 1426 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1427 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1428 | && !record_btrace_generating_corefile |
f6ac5f3d | 1429 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1430 | { |
1431 | switch (object) | |
1432 | { | |
1433 | case TARGET_OBJECT_MEMORY: | |
1434 | { | |
1435 | struct target_section *section; | |
1436 | ||
1437 | /* We do not allow writing memory in general. */ | |
1438 | if (writebuf != NULL) | |
9b409511 YQ |
1439 | { |
1440 | *xfered_len = len; | |
bc113b4e | 1441 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1442 | } |
633785ff MM |
1443 | |
1444 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1445 | section = target_section_by_addr (this, offset); |
633785ff MM |
1446 | if (section != NULL) |
1447 | { | |
1448 | /* Check if the section we found is readonly. */ | |
1449 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1450 | section->the_bfd_section) | |
1451 | & SEC_READONLY) != 0) | |
1452 | { | |
1453 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1454 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1455 | break; |
1456 | } | |
1457 | } | |
1458 | ||
9b409511 | 1459 | *xfered_len = len; |
bc113b4e | 1460 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1461 | } |
1462 | } | |
1463 | } | |
1464 | ||
1465 | /* Forward the request. */ | |
b6a8c27b PA |
1466 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1467 | offset, len, xfered_len); | |
633785ff MM |
1468 | } |
1469 | ||
f6ac5f3d | 1470 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1471 | |
f6ac5f3d PA |
1472 | int |
1473 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1474 | struct bp_target_info *bp_tgt) | |
633785ff | 1475 | { |
67b5c0c1 MM |
1476 | const char *old; |
1477 | int ret; | |
633785ff MM |
1478 | |
1479 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1480 | duration of this function. */ | |
67b5c0c1 MM |
1481 | old = replay_memory_access; |
1482 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1483 | |
1484 | ret = 0; | |
492d29ea PA |
1485 | TRY |
1486 | { | |
b6a8c27b | 1487 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1488 | } |
492d29ea PA |
1489 | CATCH (except, RETURN_MASK_ALL) |
1490 | { | |
6c63c96a | 1491 | replay_memory_access = old; |
492d29ea PA |
1492 | throw_exception (except); |
1493 | } | |
1494 | END_CATCH | |
6c63c96a | 1495 | replay_memory_access = old; |
633785ff MM |
1496 | |
1497 | return ret; | |
1498 | } | |
1499 | ||
f6ac5f3d | 1500 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1501 | |
f6ac5f3d PA |
1502 | int |
1503 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1504 | struct bp_target_info *bp_tgt, | |
1505 | enum remove_bp_reason reason) | |
633785ff | 1506 | { |
67b5c0c1 MM |
1507 | const char *old; |
1508 | int ret; | |
633785ff MM |
1509 | |
1510 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1511 | duration of this function. */ | |
67b5c0c1 MM |
1512 | old = replay_memory_access; |
1513 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1514 | |
1515 | ret = 0; | |
492d29ea PA |
1516 | TRY |
1517 | { | |
b6a8c27b | 1518 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1519 | } |
492d29ea PA |
1520 | CATCH (except, RETURN_MASK_ALL) |
1521 | { | |
6c63c96a | 1522 | replay_memory_access = old; |
492d29ea PA |
1523 | throw_exception (except); |
1524 | } | |
1525 | END_CATCH | |
6c63c96a | 1526 | replay_memory_access = old; |
633785ff MM |
1527 | |
1528 | return ret; | |
1529 | } | |
1530 | ||
f6ac5f3d | 1531 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1532 | |
f6ac5f3d PA |
1533 | void |
1534 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1535 | { |
1536 | struct btrace_insn_iterator *replay; | |
1537 | struct thread_info *tp; | |
1538 | ||
222312d3 | 1539 | tp = find_thread_ptid (regcache->ptid ()); |
1f3ef581 MM |
1540 | gdb_assert (tp != NULL); |
1541 | ||
1542 | replay = tp->btrace.replay; | |
aef92902 | 1543 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1544 | { |
1545 | const struct btrace_insn *insn; | |
1546 | struct gdbarch *gdbarch; | |
1547 | int pcreg; | |
1548 | ||
ac7936df | 1549 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1550 | pcreg = gdbarch_pc_regnum (gdbarch); |
1551 | if (pcreg < 0) | |
1552 | return; | |
1553 | ||
1554 | /* We can only provide the PC register. */ | |
1555 | if (regno >= 0 && regno != pcreg) | |
1556 | return; | |
1557 | ||
1558 | insn = btrace_insn_get (replay); | |
1559 | gdb_assert (insn != NULL); | |
1560 | ||
73e1c03f | 1561 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1562 | } |
1563 | else | |
b6a8c27b | 1564 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1565 | } |
1566 | ||
f6ac5f3d | 1567 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1568 | |
f6ac5f3d PA |
1569 | void |
1570 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1571 | { |
1572 | struct target_ops *t; | |
1573 | ||
a52eab48 | 1574 | if (!record_btrace_generating_corefile |
222312d3 | 1575 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1576 | error (_("Cannot write registers while replaying.")); |
1f3ef581 MM |
1577 | |
1578 | gdb_assert (may_write_registers != 0); | |
1579 | ||
b6a8c27b | 1580 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1581 | } |
1582 | ||
f6ac5f3d | 1583 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1584 | |
f6ac5f3d PA |
1585 | void |
1586 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1587 | { |
a52eab48 | 1588 | if (!record_btrace_generating_corefile |
222312d3 | 1589 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1590 | return; |
1591 | ||
b6a8c27b | 1592 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1593 | } |
1594 | ||
0b722aec MM |
1595 | /* The branch trace frame cache. */ |
1596 | ||
1597 | struct btrace_frame_cache | |
1598 | { | |
1599 | /* The thread. */ | |
1600 | struct thread_info *tp; | |
1601 | ||
1602 | /* The frame info. */ | |
1603 | struct frame_info *frame; | |
1604 | ||
1605 | /* The branch trace function segment. */ | |
1606 | const struct btrace_function *bfun; | |
1607 | }; | |
1608 | ||
1609 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1610 | ||
1611 | static htab_t bfcache; | |
1612 | ||
1613 | /* hash_f for htab_create_alloc of bfcache. */ | |
1614 | ||
1615 | static hashval_t | |
1616 | bfcache_hash (const void *arg) | |
1617 | { | |
19ba03f4 SM |
1618 | const struct btrace_frame_cache *cache |
1619 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1620 | |
1621 | return htab_hash_pointer (cache->frame); | |
1622 | } | |
1623 | ||
1624 | /* eq_f for htab_create_alloc of bfcache. */ | |
1625 | ||
1626 | static int | |
1627 | bfcache_eq (const void *arg1, const void *arg2) | |
1628 | { | |
19ba03f4 SM |
1629 | const struct btrace_frame_cache *cache1 |
1630 | = (const struct btrace_frame_cache *) arg1; | |
1631 | const struct btrace_frame_cache *cache2 | |
1632 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1633 | |
1634 | return cache1->frame == cache2->frame; | |
1635 | } | |
1636 | ||
1637 | /* Create a new btrace frame cache. */ | |
1638 | ||
1639 | static struct btrace_frame_cache * | |
1640 | bfcache_new (struct frame_info *frame) | |
1641 | { | |
1642 | struct btrace_frame_cache *cache; | |
1643 | void **slot; | |
1644 | ||
1645 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1646 | cache->frame = frame; | |
1647 | ||
1648 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1649 | gdb_assert (*slot == NULL); | |
1650 | *slot = cache; | |
1651 | ||
1652 | return cache; | |
1653 | } | |
1654 | ||
1655 | /* Extract the branch trace function from a branch trace frame. */ | |
1656 | ||
1657 | static const struct btrace_function * | |
1658 | btrace_get_frame_function (struct frame_info *frame) | |
1659 | { | |
1660 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1661 | struct btrace_frame_cache pattern; |
1662 | void **slot; | |
1663 | ||
1664 | pattern.frame = frame; | |
1665 | ||
1666 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1667 | if (slot == NULL) | |
1668 | return NULL; | |
1669 | ||
19ba03f4 | 1670 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1671 | return cache->bfun; |
1672 | } | |
1673 | ||
cecac1ab MM |
1674 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1675 | ||
1676 | static enum unwind_stop_reason | |
1677 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1678 | void **this_cache) | |
1679 | { | |
0b722aec MM |
1680 | const struct btrace_frame_cache *cache; |
1681 | const struct btrace_function *bfun; | |
1682 | ||
19ba03f4 | 1683 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1684 | bfun = cache->bfun; |
1685 | gdb_assert (bfun != NULL); | |
1686 | ||
42bfe59e | 1687 | if (bfun->up == 0) |
0b722aec MM |
1688 | return UNWIND_UNAVAILABLE; |
1689 | ||
1690 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1691 | } |
1692 | ||
1693 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1694 | ||
1695 | static void | |
1696 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1697 | struct frame_id *this_id) | |
1698 | { | |
0b722aec MM |
1699 | const struct btrace_frame_cache *cache; |
1700 | const struct btrace_function *bfun; | |
4aeb0dfc | 1701 | struct btrace_call_iterator it; |
0b722aec MM |
1702 | CORE_ADDR code, special; |
1703 | ||
19ba03f4 | 1704 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1705 | |
1706 | bfun = cache->bfun; | |
1707 | gdb_assert (bfun != NULL); | |
1708 | ||
4aeb0dfc TW |
1709 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1710 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1711 | |
1712 | code = get_frame_func (this_frame); | |
1713 | special = bfun->number; | |
1714 | ||
1715 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1716 | ||
1717 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1718 | btrace_get_bfun_name (cache->bfun), | |
1719 | core_addr_to_string_nz (this_id->code_addr), | |
1720 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1721 | } |
1722 | ||
1723 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1724 | ||
1725 | static struct value * | |
1726 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1727 | void **this_cache, | |
1728 | int regnum) | |
1729 | { | |
0b722aec MM |
1730 | const struct btrace_frame_cache *cache; |
1731 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1732 | struct btrace_call_iterator it; |
0b722aec MM |
1733 | struct gdbarch *gdbarch; |
1734 | CORE_ADDR pc; | |
1735 | int pcreg; | |
1736 | ||
1737 | gdbarch = get_frame_arch (this_frame); | |
1738 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1739 | if (pcreg < 0 || regnum != pcreg) | |
1740 | throw_error (NOT_AVAILABLE_ERROR, | |
1741 | _("Registers are not available in btrace record history")); | |
1742 | ||
19ba03f4 | 1743 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1744 | bfun = cache->bfun; |
1745 | gdb_assert (bfun != NULL); | |
1746 | ||
42bfe59e | 1747 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1748 | throw_error (NOT_AVAILABLE_ERROR, |
1749 | _("No caller in btrace record history")); | |
1750 | ||
42bfe59e TW |
1751 | caller = btrace_call_get (&it); |
1752 | ||
0b722aec | 1753 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1754 | pc = caller->insn.front ().pc; |
0b722aec MM |
1755 | else |
1756 | { | |
0860c437 | 1757 | pc = caller->insn.back ().pc; |
0b722aec MM |
1758 | pc += gdb_insn_length (gdbarch, pc); |
1759 | } | |
1760 | ||
1761 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1762 | btrace_get_bfun_name (bfun), bfun->level, | |
1763 | core_addr_to_string_nz (pc)); | |
1764 | ||
1765 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1766 | } |
1767 | ||
1768 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1769 | ||
1770 | static int | |
1771 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1772 | struct frame_info *this_frame, | |
1773 | void **this_cache) | |
1774 | { | |
0b722aec MM |
1775 | const struct btrace_function *bfun; |
1776 | struct btrace_frame_cache *cache; | |
cecac1ab | 1777 | struct thread_info *tp; |
0b722aec | 1778 | struct frame_info *next; |
cecac1ab MM |
1779 | |
1780 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1781 | tp = inferior_thread (); |
cecac1ab | 1782 | |
0b722aec MM |
1783 | bfun = NULL; |
1784 | next = get_next_frame (this_frame); | |
1785 | if (next == NULL) | |
1786 | { | |
1787 | const struct btrace_insn_iterator *replay; | |
1788 | ||
1789 | replay = tp->btrace.replay; | |
1790 | if (replay != NULL) | |
08c3f6d2 | 1791 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1792 | } |
1793 | else | |
1794 | { | |
1795 | const struct btrace_function *callee; | |
42bfe59e | 1796 | struct btrace_call_iterator it; |
0b722aec MM |
1797 | |
1798 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1799 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1800 | return 0; | |
1801 | ||
1802 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1803 | return 0; | |
1804 | ||
1805 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1806 | } |
1807 | ||
1808 | if (bfun == NULL) | |
1809 | return 0; | |
1810 | ||
1811 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1812 | btrace_get_bfun_name (bfun), bfun->level); | |
1813 | ||
1814 | /* This is our frame. Initialize the frame cache. */ | |
1815 | cache = bfcache_new (this_frame); | |
1816 | cache->tp = tp; | |
1817 | cache->bfun = bfun; | |
1818 | ||
1819 | *this_cache = cache; | |
1820 | return 1; | |
1821 | } | |
1822 | ||
1823 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1824 | ||
1825 | static int | |
1826 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1827 | struct frame_info *this_frame, | |
1828 | void **this_cache) | |
1829 | { | |
1830 | const struct btrace_function *bfun, *callee; | |
1831 | struct btrace_frame_cache *cache; | |
42bfe59e | 1832 | struct btrace_call_iterator it; |
0b722aec | 1833 | struct frame_info *next; |
42bfe59e | 1834 | struct thread_info *tinfo; |
0b722aec MM |
1835 | |
1836 | next = get_next_frame (this_frame); | |
1837 | if (next == NULL) | |
1838 | return 0; | |
1839 | ||
1840 | callee = btrace_get_frame_function (next); | |
1841 | if (callee == NULL) | |
1842 | return 0; | |
1843 | ||
1844 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1845 | return 0; | |
1846 | ||
00431a78 | 1847 | tinfo = inferior_thread (); |
42bfe59e | 1848 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1849 | return 0; |
1850 | ||
42bfe59e TW |
1851 | bfun = btrace_call_get (&it); |
1852 | ||
0b722aec MM |
1853 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1854 | btrace_get_bfun_name (bfun), bfun->level); | |
1855 | ||
1856 | /* This is our frame. Initialize the frame cache. */ | |
1857 | cache = bfcache_new (this_frame); | |
42bfe59e | 1858 | cache->tp = tinfo; |
0b722aec MM |
1859 | cache->bfun = bfun; |
1860 | ||
1861 | *this_cache = cache; | |
1862 | return 1; | |
1863 | } | |
1864 | ||
1865 | static void | |
1866 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1867 | { | |
1868 | struct btrace_frame_cache *cache; | |
1869 | void **slot; | |
1870 | ||
19ba03f4 | 1871 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1872 | |
1873 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1874 | gdb_assert (slot != NULL); | |
1875 | ||
1876 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1877 | } |
1878 | ||
1879 | /* btrace recording does not store previous memory content, neither the stack | |
1880 | frames content. Any unwinding would return errorneous results as the stack | |
1881 | contents no longer matches the changed PC value restored from history. | |
1882 | Therefore this unwinder reports any possibly unwound registers as | |
1883 | <unavailable>. */ | |
1884 | ||
0b722aec | 1885 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1886 | { |
1887 | NORMAL_FRAME, | |
1888 | record_btrace_frame_unwind_stop_reason, | |
1889 | record_btrace_frame_this_id, | |
1890 | record_btrace_frame_prev_register, | |
1891 | NULL, | |
0b722aec MM |
1892 | record_btrace_frame_sniffer, |
1893 | record_btrace_frame_dealloc_cache | |
1894 | }; | |
1895 | ||
1896 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1897 | { | |
1898 | TAILCALL_FRAME, | |
1899 | record_btrace_frame_unwind_stop_reason, | |
1900 | record_btrace_frame_this_id, | |
1901 | record_btrace_frame_prev_register, | |
1902 | NULL, | |
1903 | record_btrace_tailcall_frame_sniffer, | |
1904 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1905 | }; |
b2f4cfde | 1906 | |
f6ac5f3d | 1907 | /* Implement the get_unwinder method. */ |
ac01945b | 1908 | |
f6ac5f3d PA |
1909 | const struct frame_unwind * |
1910 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1911 | { |
1912 | return &record_btrace_frame_unwind; | |
1913 | } | |
1914 | ||
f6ac5f3d | 1915 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1916 | |
f6ac5f3d PA |
1917 | const struct frame_unwind * |
1918 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1919 | { |
1920 | return &record_btrace_tailcall_frame_unwind; | |
1921 | } | |
1922 | ||
987e68b1 MM |
1923 | /* Return a human-readable string for FLAG. */ |
1924 | ||
1925 | static const char * | |
1926 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1927 | { | |
1928 | switch (flag) | |
1929 | { | |
1930 | case BTHR_STEP: | |
1931 | return "step"; | |
1932 | ||
1933 | case BTHR_RSTEP: | |
1934 | return "reverse-step"; | |
1935 | ||
1936 | case BTHR_CONT: | |
1937 | return "cont"; | |
1938 | ||
1939 | case BTHR_RCONT: | |
1940 | return "reverse-cont"; | |
1941 | ||
1942 | case BTHR_STOP: | |
1943 | return "stop"; | |
1944 | } | |
1945 | ||
1946 | return "<invalid>"; | |
1947 | } | |
1948 | ||
52834460 MM |
1949 | /* Indicate that TP should be resumed according to FLAG. */ |
1950 | ||
1951 | static void | |
1952 | record_btrace_resume_thread (struct thread_info *tp, | |
1953 | enum btrace_thread_flag flag) | |
1954 | { | |
1955 | struct btrace_thread_info *btinfo; | |
1956 | ||
43792cf0 | 1957 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 | 1958 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); |
52834460 MM |
1959 | |
1960 | btinfo = &tp->btrace; | |
1961 | ||
52834460 | 1962 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1963 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1964 | |
0ca912df MM |
1965 | /* A resume request overwrites a preceding resume or stop request. */ |
1966 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1967 | btinfo->flags |= flag; |
1968 | } | |
1969 | ||
ec71cc2f MM |
1970 | /* Get the current frame for TP. */ |
1971 | ||
1972 | static struct frame_info * | |
1973 | get_thread_current_frame (struct thread_info *tp) | |
1974 | { | |
1975 | struct frame_info *frame; | |
1976 | ptid_t old_inferior_ptid; | |
1977 | int executing; | |
1978 | ||
00431a78 PA |
1979 | /* Set current thread, which is implicitly used by |
1980 | get_current_frame. */ | |
1981 | scoped_restore_current_thread restore_thread; | |
1982 | ||
1983 | switch_to_thread (tp); | |
ec71cc2f MM |
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. */ | |
00431a78 PA |
1992 | executing = tp->executing; |
1993 | set_executing (inferior_ptid, false); | |
ec71cc2f MM |
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 | ||
ec71cc2f MM |
2005 | throw_exception (except); |
2006 | } | |
2007 | END_CATCH | |
2008 | ||
2009 | /* Restore the previous execution state. */ | |
2010 | set_executing (inferior_ptid, executing); | |
2011 | ||
ec71cc2f MM |
2012 | return frame; |
2013 | } | |
2014 | ||
52834460 MM |
2015 | /* Start replaying a thread. */ |
2016 | ||
2017 | static struct btrace_insn_iterator * | |
2018 | record_btrace_start_replaying (struct thread_info *tp) | |
2019 | { | |
52834460 MM |
2020 | struct btrace_insn_iterator *replay; |
2021 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2022 | |
2023 | btinfo = &tp->btrace; | |
2024 | replay = NULL; | |
2025 | ||
2026 | /* We can't start replaying without trace. */ | |
b54b03bd | 2027 | if (btinfo->functions.empty ()) |
52834460 MM |
2028 | return NULL; |
2029 | ||
52834460 MM |
2030 | /* GDB stores the current frame_id when stepping in order to detects steps |
2031 | into subroutines. | |
2032 | Since frames are computed differently when we're replaying, we need to | |
2033 | recompute those stored frames and fix them up so we can still detect | |
2034 | subroutines after we started replaying. */ | |
492d29ea | 2035 | TRY |
52834460 MM |
2036 | { |
2037 | struct frame_info *frame; | |
2038 | struct frame_id frame_id; | |
2039 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2040 | ||
2041 | /* The current frame without replaying - computed via normal unwind. */ | |
ec71cc2f | 2042 | frame = get_thread_current_frame (tp); |
52834460 MM |
2043 | frame_id = get_frame_id (frame); |
2044 | ||
2045 | /* Check if we need to update any stepping-related frame id's. */ | |
2046 | upd_step_frame_id = frame_id_eq (frame_id, | |
2047 | tp->control.step_frame_id); | |
2048 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2049 | tp->control.step_stack_frame_id); | |
2050 | ||
2051 | /* We start replaying at the end of the branch trace. This corresponds | |
2052 | to the current instruction. */ | |
8d749320 | 2053 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2054 | btrace_insn_end (replay, btinfo); |
2055 | ||
31fd9caa MM |
2056 | /* Skip gaps at the end of the trace. */ |
2057 | while (btrace_insn_get (replay) == NULL) | |
2058 | { | |
2059 | unsigned int steps; | |
2060 | ||
2061 | steps = btrace_insn_prev (replay, 1); | |
2062 | if (steps == 0) | |
2063 | error (_("No trace.")); | |
2064 | } | |
2065 | ||
52834460 MM |
2066 | /* We're not replaying, yet. */ |
2067 | gdb_assert (btinfo->replay == NULL); | |
2068 | btinfo->replay = replay; | |
2069 | ||
2070 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2071 | registers_changed_thread (tp); |
52834460 MM |
2072 | |
2073 | /* The current frame with replaying - computed via btrace unwind. */ | |
ec71cc2f | 2074 | frame = get_thread_current_frame (tp); |
52834460 MM |
2075 | frame_id = get_frame_id (frame); |
2076 | ||
2077 | /* Replace stepping related frames where necessary. */ | |
2078 | if (upd_step_frame_id) | |
2079 | tp->control.step_frame_id = frame_id; | |
2080 | if (upd_step_stack_frame_id) | |
2081 | tp->control.step_stack_frame_id = frame_id; | |
2082 | } | |
492d29ea | 2083 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
2084 | { |
2085 | xfree (btinfo->replay); | |
2086 | btinfo->replay = NULL; | |
2087 | ||
00431a78 | 2088 | registers_changed_thread (tp); |
52834460 MM |
2089 | |
2090 | throw_exception (except); | |
2091 | } | |
492d29ea | 2092 | END_CATCH |
52834460 MM |
2093 | |
2094 | return replay; | |
2095 | } | |
2096 | ||
2097 | /* Stop replaying a thread. */ | |
2098 | ||
2099 | static void | |
2100 | record_btrace_stop_replaying (struct thread_info *tp) | |
2101 | { | |
2102 | struct btrace_thread_info *btinfo; | |
2103 | ||
2104 | btinfo = &tp->btrace; | |
2105 | ||
2106 | xfree (btinfo->replay); | |
2107 | btinfo->replay = NULL; | |
2108 | ||
2109 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2110 | registers_changed_thread (tp); |
52834460 MM |
2111 | } |
2112 | ||
e3cfc1c7 MM |
2113 | /* Stop replaying TP if it is at the end of its execution history. */ |
2114 | ||
2115 | static void | |
2116 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2117 | { | |
2118 | struct btrace_insn_iterator *replay, end; | |
2119 | struct btrace_thread_info *btinfo; | |
2120 | ||
2121 | btinfo = &tp->btrace; | |
2122 | replay = btinfo->replay; | |
2123 | ||
2124 | if (replay == NULL) | |
2125 | return; | |
2126 | ||
2127 | btrace_insn_end (&end, btinfo); | |
2128 | ||
2129 | if (btrace_insn_cmp (replay, &end) == 0) | |
2130 | record_btrace_stop_replaying (tp); | |
2131 | } | |
2132 | ||
f6ac5f3d | 2133 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2134 | |
f6ac5f3d PA |
2135 | void |
2136 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2137 | { |
0ca912df | 2138 | struct thread_info *tp; |
d2939ba2 | 2139 | enum btrace_thread_flag flag, cflag; |
52834460 | 2140 | |
987e68b1 | 2141 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
f6ac5f3d | 2142 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2143 | step ? "step" : "cont"); |
52834460 | 2144 | |
0ca912df MM |
2145 | /* Store the execution direction of the last resume. |
2146 | ||
f6ac5f3d | 2147 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2148 | to not change the execution direction in-between. */ |
f6ac5f3d | 2149 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2150 | |
0ca912df | 2151 | /* As long as we're not replaying, just forward the request. |
52834460 | 2152 | |
0ca912df MM |
2153 | For non-stop targets this means that no thread is replaying. In order to |
2154 | make progress, we may need to explicitly move replaying threads to the end | |
2155 | of their execution history. */ | |
f6ac5f3d PA |
2156 | if ((::execution_direction != EXEC_REVERSE) |
2157 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2158 | { |
b6a8c27b | 2159 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2160 | return; |
b2f4cfde MM |
2161 | } |
2162 | ||
52834460 | 2163 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2164 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2165 | { |
2166 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2167 | cflag = BTHR_RCONT; | |
2168 | } | |
52834460 | 2169 | else |
d2939ba2 MM |
2170 | { |
2171 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2172 | cflag = BTHR_CONT; | |
2173 | } | |
52834460 | 2174 | |
52834460 | 2175 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2176 | record_btrace_wait below. |
2177 | ||
2178 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2179 | if (!target_is_non_stop_p ()) | |
2180 | { | |
2181 | gdb_assert (ptid_match (inferior_ptid, ptid)); | |
2182 | ||
2183 | ALL_NON_EXITED_THREADS (tp) | |
2184 | if (ptid_match (tp->ptid, ptid)) | |
2185 | { | |
2186 | if (ptid_match (tp->ptid, inferior_ptid)) | |
2187 | record_btrace_resume_thread (tp, flag); | |
2188 | else | |
2189 | record_btrace_resume_thread (tp, cflag); | |
2190 | } | |
2191 | } | |
2192 | else | |
2193 | { | |
2194 | ALL_NON_EXITED_THREADS (tp) | |
2195 | if (ptid_match (tp->ptid, ptid)) | |
2196 | record_btrace_resume_thread (tp, flag); | |
2197 | } | |
70ad5bff MM |
2198 | |
2199 | /* Async support. */ | |
2200 | if (target_can_async_p ()) | |
2201 | { | |
6a3753b3 | 2202 | target_async (1); |
70ad5bff MM |
2203 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2204 | } | |
52834460 MM |
2205 | } |
2206 | ||
f6ac5f3d | 2207 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2208 | |
f6ac5f3d PA |
2209 | void |
2210 | record_btrace_target::commit_resume () | |
85ad3aaf | 2211 | { |
f6ac5f3d PA |
2212 | if ((::execution_direction != EXEC_REVERSE) |
2213 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2214 | beneath ()->commit_resume (); |
85ad3aaf PA |
2215 | } |
2216 | ||
987e68b1 MM |
2217 | /* Cancel resuming TP. */ |
2218 | ||
2219 | static void | |
2220 | record_btrace_cancel_resume (struct thread_info *tp) | |
2221 | { | |
2222 | enum btrace_thread_flag flags; | |
2223 | ||
2224 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2225 | if (flags == 0) | |
2226 | return; | |
2227 | ||
43792cf0 PA |
2228 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2229 | print_thread_id (tp), | |
987e68b1 MM |
2230 | target_pid_to_str (tp->ptid), flags, |
2231 | btrace_thread_flag_to_str (flags)); | |
2232 | ||
2233 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2234 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2235 | } |
2236 | ||
2237 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2238 | ||
2239 | static struct target_waitstatus | |
2240 | btrace_step_no_history (void) | |
2241 | { | |
2242 | struct target_waitstatus status; | |
2243 | ||
2244 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2245 | ||
2246 | return status; | |
2247 | } | |
2248 | ||
2249 | /* Return a target_waitstatus indicating that a step finished. */ | |
2250 | ||
2251 | static struct target_waitstatus | |
2252 | btrace_step_stopped (void) | |
2253 | { | |
2254 | struct target_waitstatus status; | |
2255 | ||
2256 | status.kind = TARGET_WAITKIND_STOPPED; | |
2257 | status.value.sig = GDB_SIGNAL_TRAP; | |
2258 | ||
2259 | return status; | |
2260 | } | |
2261 | ||
6e4879f0 MM |
2262 | /* Return a target_waitstatus indicating that a thread was stopped as |
2263 | requested. */ | |
2264 | ||
2265 | static struct target_waitstatus | |
2266 | btrace_step_stopped_on_request (void) | |
2267 | { | |
2268 | struct target_waitstatus status; | |
2269 | ||
2270 | status.kind = TARGET_WAITKIND_STOPPED; | |
2271 | status.value.sig = GDB_SIGNAL_0; | |
2272 | ||
2273 | return status; | |
2274 | } | |
2275 | ||
d825d248 MM |
2276 | /* Return a target_waitstatus indicating a spurious stop. */ |
2277 | ||
2278 | static struct target_waitstatus | |
2279 | btrace_step_spurious (void) | |
2280 | { | |
2281 | struct target_waitstatus status; | |
2282 | ||
2283 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2284 | ||
2285 | return status; | |
2286 | } | |
2287 | ||
e3cfc1c7 MM |
2288 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2289 | ||
2290 | static struct target_waitstatus | |
2291 | btrace_step_no_resumed (void) | |
2292 | { | |
2293 | struct target_waitstatus status; | |
2294 | ||
2295 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2296 | ||
2297 | return status; | |
2298 | } | |
2299 | ||
2300 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2301 | ||
2302 | static struct target_waitstatus | |
2303 | btrace_step_again (void) | |
2304 | { | |
2305 | struct target_waitstatus status; | |
2306 | ||
2307 | status.kind = TARGET_WAITKIND_IGNORE; | |
2308 | ||
2309 | return status; | |
2310 | } | |
2311 | ||
52834460 MM |
2312 | /* Clear the record histories. */ |
2313 | ||
2314 | static void | |
2315 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2316 | { | |
2317 | xfree (btinfo->insn_history); | |
2318 | xfree (btinfo->call_history); | |
2319 | ||
2320 | btinfo->insn_history = NULL; | |
2321 | btinfo->call_history = NULL; | |
2322 | } | |
2323 | ||
3c615f99 MM |
2324 | /* Check whether TP's current replay position is at a breakpoint. */ |
2325 | ||
2326 | static int | |
2327 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2328 | { | |
2329 | struct btrace_insn_iterator *replay; | |
2330 | struct btrace_thread_info *btinfo; | |
2331 | const struct btrace_insn *insn; | |
3c615f99 MM |
2332 | |
2333 | btinfo = &tp->btrace; | |
2334 | replay = btinfo->replay; | |
2335 | ||
2336 | if (replay == NULL) | |
2337 | return 0; | |
2338 | ||
2339 | insn = btrace_insn_get (replay); | |
2340 | if (insn == NULL) | |
2341 | return 0; | |
2342 | ||
00431a78 | 2343 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2344 | &btinfo->stop_reason); |
2345 | } | |
2346 | ||
d825d248 | 2347 | /* Step one instruction in forward direction. */ |
52834460 MM |
2348 | |
2349 | static struct target_waitstatus | |
d825d248 | 2350 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2351 | { |
b61ce85c | 2352 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2353 | struct btrace_thread_info *btinfo; |
52834460 | 2354 | |
d825d248 MM |
2355 | btinfo = &tp->btrace; |
2356 | replay = btinfo->replay; | |
2357 | ||
2358 | /* We're done if we're not replaying. */ | |
2359 | if (replay == NULL) | |
2360 | return btrace_step_no_history (); | |
2361 | ||
011c71b6 MM |
2362 | /* Check if we're stepping a breakpoint. */ |
2363 | if (record_btrace_replay_at_breakpoint (tp)) | |
2364 | return btrace_step_stopped (); | |
2365 | ||
b61ce85c MM |
2366 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2367 | jump back to the instruction at which we started. */ | |
2368 | start = *replay; | |
d825d248 MM |
2369 | do |
2370 | { | |
2371 | unsigned int steps; | |
2372 | ||
e3cfc1c7 MM |
2373 | /* We will bail out here if we continue stepping after reaching the end |
2374 | of the execution history. */ | |
d825d248 MM |
2375 | steps = btrace_insn_next (replay, 1); |
2376 | if (steps == 0) | |
b61ce85c MM |
2377 | { |
2378 | *replay = start; | |
2379 | return btrace_step_no_history (); | |
2380 | } | |
d825d248 MM |
2381 | } |
2382 | while (btrace_insn_get (replay) == NULL); | |
2383 | ||
2384 | /* Determine the end of the instruction trace. */ | |
2385 | btrace_insn_end (&end, btinfo); | |
2386 | ||
e3cfc1c7 MM |
2387 | /* The execution trace contains (and ends with) the current instruction. |
2388 | This instruction has not been executed, yet, so the trace really ends | |
2389 | one instruction earlier. */ | |
d825d248 | 2390 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2391 | return btrace_step_no_history (); |
d825d248 MM |
2392 | |
2393 | return btrace_step_spurious (); | |
2394 | } | |
2395 | ||
2396 | /* Step one instruction in backward direction. */ | |
2397 | ||
2398 | static struct target_waitstatus | |
2399 | record_btrace_single_step_backward (struct thread_info *tp) | |
2400 | { | |
b61ce85c | 2401 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2402 | struct btrace_thread_info *btinfo; |
e59fa00f | 2403 | |
52834460 MM |
2404 | btinfo = &tp->btrace; |
2405 | replay = btinfo->replay; | |
2406 | ||
d825d248 MM |
2407 | /* Start replaying if we're not already doing so. */ |
2408 | if (replay == NULL) | |
2409 | replay = record_btrace_start_replaying (tp); | |
2410 | ||
2411 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2412 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2413 | the trace), jump back to the instruction at which we started. */ | |
2414 | start = *replay; | |
d825d248 MM |
2415 | do |
2416 | { | |
2417 | unsigned int steps; | |
2418 | ||
2419 | steps = btrace_insn_prev (replay, 1); | |
2420 | if (steps == 0) | |
b61ce85c MM |
2421 | { |
2422 | *replay = start; | |
2423 | return btrace_step_no_history (); | |
2424 | } | |
d825d248 MM |
2425 | } |
2426 | while (btrace_insn_get (replay) == NULL); | |
2427 | ||
011c71b6 MM |
2428 | /* Check if we're stepping a breakpoint. |
2429 | ||
2430 | For reverse-stepping, this check is after the step. There is logic in | |
2431 | infrun.c that handles reverse-stepping separately. See, for example, | |
2432 | proceed and adjust_pc_after_break. | |
2433 | ||
2434 | This code assumes that for reverse-stepping, PC points to the last | |
2435 | de-executed instruction, whereas for forward-stepping PC points to the | |
2436 | next to-be-executed instruction. */ | |
2437 | if (record_btrace_replay_at_breakpoint (tp)) | |
2438 | return btrace_step_stopped (); | |
2439 | ||
d825d248 MM |
2440 | return btrace_step_spurious (); |
2441 | } | |
2442 | ||
2443 | /* Step a single thread. */ | |
2444 | ||
2445 | static struct target_waitstatus | |
2446 | record_btrace_step_thread (struct thread_info *tp) | |
2447 | { | |
2448 | struct btrace_thread_info *btinfo; | |
2449 | struct target_waitstatus status; | |
2450 | enum btrace_thread_flag flags; | |
2451 | ||
2452 | btinfo = &tp->btrace; | |
2453 | ||
6e4879f0 MM |
2454 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2455 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2456 | |
43792cf0 | 2457 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 MM |
2458 | target_pid_to_str (tp->ptid), flags, |
2459 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2460 | |
6e4879f0 MM |
2461 | /* We can't step without an execution history. */ |
2462 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2463 | return btrace_step_no_history (); | |
2464 | ||
52834460 MM |
2465 | switch (flags) |
2466 | { | |
2467 | default: | |
2468 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2469 | ||
6e4879f0 MM |
2470 | case BTHR_STOP: |
2471 | return btrace_step_stopped_on_request (); | |
2472 | ||
52834460 | 2473 | case BTHR_STEP: |
d825d248 MM |
2474 | status = record_btrace_single_step_forward (tp); |
2475 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2476 | break; |
52834460 MM |
2477 | |
2478 | return btrace_step_stopped (); | |
2479 | ||
2480 | case BTHR_RSTEP: | |
d825d248 MM |
2481 | status = record_btrace_single_step_backward (tp); |
2482 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2483 | break; |
52834460 MM |
2484 | |
2485 | return btrace_step_stopped (); | |
2486 | ||
2487 | case BTHR_CONT: | |
e3cfc1c7 MM |
2488 | status = record_btrace_single_step_forward (tp); |
2489 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2490 | break; | |
52834460 | 2491 | |
e3cfc1c7 MM |
2492 | btinfo->flags |= flags; |
2493 | return btrace_step_again (); | |
52834460 MM |
2494 | |
2495 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2496 | status = record_btrace_single_step_backward (tp); |
2497 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2498 | break; | |
52834460 | 2499 | |
e3cfc1c7 MM |
2500 | btinfo->flags |= flags; |
2501 | return btrace_step_again (); | |
2502 | } | |
d825d248 | 2503 | |
f6ac5f3d | 2504 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2505 | method will stop the thread for whom the event is reported. */ |
2506 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2507 | btinfo->flags |= flags; | |
52834460 | 2508 | |
e3cfc1c7 | 2509 | return status; |
b2f4cfde MM |
2510 | } |
2511 | ||
a6b5be76 MM |
2512 | /* Announce further events if necessary. */ |
2513 | ||
2514 | static void | |
53127008 SM |
2515 | record_btrace_maybe_mark_async_event |
2516 | (const std::vector<thread_info *> &moving, | |
2517 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2518 | { |
53127008 SM |
2519 | bool more_moving = !moving.empty (); |
2520 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2521 | |
2522 | if (!more_moving && !more_no_history) | |
2523 | return; | |
2524 | ||
2525 | if (more_moving) | |
2526 | DEBUG ("movers pending"); | |
2527 | ||
2528 | if (more_no_history) | |
2529 | DEBUG ("no-history pending"); | |
2530 | ||
2531 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2532 | } | |
2533 | ||
f6ac5f3d | 2534 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2535 | |
f6ac5f3d PA |
2536 | ptid_t |
2537 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2538 | int options) | |
b2f4cfde | 2539 | { |
53127008 SM |
2540 | std::vector<thread_info *> moving; |
2541 | std::vector<thread_info *> no_history; | |
52834460 MM |
2542 | |
2543 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2544 | ||
b2f4cfde | 2545 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2546 | if ((::execution_direction != EXEC_REVERSE) |
2547 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2548 | { |
b6a8c27b | 2549 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2550 | } |
2551 | ||
e3cfc1c7 | 2552 | /* Keep a work list of moving threads. */ |
53127008 SM |
2553 | { |
2554 | thread_info *tp; | |
2555 | ||
2556 | ALL_NON_EXITED_THREADS (tp) | |
2557 | { | |
2558 | if (ptid_match (tp->ptid, ptid) | |
2559 | && ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0)) | |
2560 | moving.push_back (tp); | |
2561 | } | |
2562 | } | |
e3cfc1c7 | 2563 | |
53127008 | 2564 | if (moving.empty ()) |
52834460 | 2565 | { |
e3cfc1c7 | 2566 | *status = btrace_step_no_resumed (); |
52834460 | 2567 | |
e3cfc1c7 | 2568 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
23fdd69e | 2569 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2570 | |
e3cfc1c7 | 2571 | return null_ptid; |
52834460 MM |
2572 | } |
2573 | ||
e3cfc1c7 MM |
2574 | /* Step moving threads one by one, one step each, until either one thread |
2575 | reports an event or we run out of threads to step. | |
2576 | ||
2577 | When stepping more than one thread, chances are that some threads reach | |
2578 | the end of their execution history earlier than others. If we reported | |
2579 | this immediately, all-stop on top of non-stop would stop all threads and | |
2580 | resume the same threads next time. And we would report the same thread | |
2581 | having reached the end of its execution history again. | |
2582 | ||
2583 | In the worst case, this would starve the other threads. But even if other | |
2584 | threads would be allowed to make progress, this would result in far too | |
2585 | many intermediate stops. | |
2586 | ||
2587 | We therefore delay the reporting of "no execution history" until we have | |
2588 | nothing else to report. By this time, all threads should have moved to | |
2589 | either the beginning or the end of their execution history. There will | |
2590 | be a single user-visible stop. */ | |
53127008 SM |
2591 | struct thread_info *eventing = NULL; |
2592 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2593 | { |
53127008 | 2594 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2595 | { |
53127008 SM |
2596 | thread_info *tp = moving[ix]; |
2597 | ||
e3cfc1c7 MM |
2598 | *status = record_btrace_step_thread (tp); |
2599 | ||
2600 | switch (status->kind) | |
2601 | { | |
2602 | case TARGET_WAITKIND_IGNORE: | |
2603 | ix++; | |
2604 | break; | |
2605 | ||
2606 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2607 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2608 | break; |
2609 | ||
2610 | default: | |
53127008 | 2611 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2612 | break; |
2613 | } | |
2614 | } | |
2615 | } | |
2616 | ||
2617 | if (eventing == NULL) | |
2618 | { | |
2619 | /* We started with at least one moving thread. This thread must have | |
2620 | either stopped or reached the end of its execution history. | |
2621 | ||
2622 | In the former case, EVENTING must not be NULL. | |
2623 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2624 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2625 | |
2626 | /* We kept threads moving at the end of their execution history. Stop | |
2627 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2628 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2629 | eventing->btrace.flags &= ~BTHR_MOVE; |
2630 | ||
2631 | *status = btrace_step_no_history (); | |
2632 | } | |
2633 | ||
2634 | gdb_assert (eventing != NULL); | |
2635 | ||
2636 | /* We kept threads replaying at the end of their execution history. Stop | |
2637 | replaying EVENTING now that we are going to report its stop. */ | |
2638 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2639 | |
2640 | /* Stop all other threads. */ | |
5953356c | 2641 | if (!target_is_non_stop_p ()) |
53127008 SM |
2642 | { |
2643 | thread_info *tp; | |
2644 | ||
2645 | ALL_NON_EXITED_THREADS (tp) | |
2646 | record_btrace_cancel_resume (tp); | |
2647 | } | |
52834460 | 2648 | |
a6b5be76 MM |
2649 | /* In async mode, we need to announce further events. */ |
2650 | if (target_is_async_p ()) | |
2651 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2652 | ||
52834460 | 2653 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2654 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2655 | |
2656 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2657 | registers_changed_thread (eventing); |
e3cfc1c7 | 2658 | |
43792cf0 PA |
2659 | DEBUG ("wait ended by thread %s (%s): %s", |
2660 | print_thread_id (eventing), | |
e3cfc1c7 | 2661 | target_pid_to_str (eventing->ptid), |
23fdd69e | 2662 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2663 | |
e3cfc1c7 | 2664 | return eventing->ptid; |
52834460 MM |
2665 | } |
2666 | ||
f6ac5f3d | 2667 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2668 | |
f6ac5f3d PA |
2669 | void |
2670 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 MM |
2671 | { |
2672 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2673 | ||
2674 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2675 | if ((::execution_direction != EXEC_REVERSE) |
2676 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2677 | { |
b6a8c27b | 2678 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2679 | } |
2680 | else | |
2681 | { | |
2682 | struct thread_info *tp; | |
2683 | ||
2684 | ALL_NON_EXITED_THREADS (tp) | |
2685 | if (ptid_match (tp->ptid, ptid)) | |
2686 | { | |
2687 | tp->btrace.flags &= ~BTHR_MOVE; | |
2688 | tp->btrace.flags |= BTHR_STOP; | |
2689 | } | |
2690 | } | |
2691 | } | |
2692 | ||
f6ac5f3d | 2693 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2694 | |
57810aa7 | 2695 | bool |
f6ac5f3d | 2696 | record_btrace_target::can_execute_reverse () |
52834460 | 2697 | { |
57810aa7 | 2698 | return true; |
52834460 MM |
2699 | } |
2700 | ||
f6ac5f3d | 2701 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2702 | |
57810aa7 | 2703 | bool |
f6ac5f3d | 2704 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2705 | { |
f6ac5f3d | 2706 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2707 | { |
2708 | struct thread_info *tp = inferior_thread (); | |
2709 | ||
2710 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2711 | } | |
2712 | ||
b6a8c27b | 2713 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2714 | } |
2715 | ||
f6ac5f3d | 2716 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2717 | record-btrace. */ |
2718 | ||
57810aa7 | 2719 | bool |
f6ac5f3d | 2720 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2721 | { |
f6ac5f3d | 2722 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2723 | return true; |
9e8915c6 | 2724 | |
b6a8c27b | 2725 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2726 | } |
2727 | ||
f6ac5f3d | 2728 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2729 | |
57810aa7 | 2730 | bool |
f6ac5f3d | 2731 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2732 | { |
f6ac5f3d | 2733 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2734 | { |
2735 | struct thread_info *tp = inferior_thread (); | |
2736 | ||
2737 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2738 | } | |
2739 | ||
b6a8c27b | 2740 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2741 | } |
2742 | ||
f6ac5f3d | 2743 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2744 | record-btrace. */ |
2745 | ||
57810aa7 | 2746 | bool |
f6ac5f3d | 2747 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2748 | { |
f6ac5f3d | 2749 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2750 | return true; |
52834460 | 2751 | |
b6a8c27b | 2752 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2753 | } |
2754 | ||
f6ac5f3d | 2755 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2756 | |
f6ac5f3d PA |
2757 | void |
2758 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2759 | { |
e8032dde | 2760 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2761 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2762 | return; |
2763 | ||
2764 | /* Forward the request. */ | |
b6a8c27b | 2765 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2766 | } |
2767 | ||
f6ac5f3d | 2768 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2769 | |
57810aa7 | 2770 | bool |
f6ac5f3d | 2771 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2772 | { |
2773 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2774 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2775 | return true; |
e2887aa3 MM |
2776 | |
2777 | /* Forward the request. */ | |
b6a8c27b | 2778 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2779 | } |
2780 | ||
066ce621 MM |
2781 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2782 | is stopped. */ | |
2783 | ||
2784 | static void | |
2785 | record_btrace_set_replay (struct thread_info *tp, | |
2786 | const struct btrace_insn_iterator *it) | |
2787 | { | |
2788 | struct btrace_thread_info *btinfo; | |
2789 | ||
2790 | btinfo = &tp->btrace; | |
2791 | ||
a0f1b963 | 2792 | if (it == NULL) |
52834460 | 2793 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2794 | else |
2795 | { | |
2796 | if (btinfo->replay == NULL) | |
52834460 | 2797 | record_btrace_start_replaying (tp); |
066ce621 MM |
2798 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2799 | return; | |
2800 | ||
2801 | *btinfo->replay = *it; | |
00431a78 | 2802 | registers_changed_thread (tp); |
066ce621 MM |
2803 | } |
2804 | ||
52834460 MM |
2805 | /* Start anew from the new replay position. */ |
2806 | record_btrace_clear_histories (btinfo); | |
485668e5 MM |
2807 | |
2808 | stop_pc = regcache_read_pc (get_current_regcache ()); | |
2809 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
066ce621 MM |
2810 | } |
2811 | ||
f6ac5f3d | 2812 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2813 | |
f6ac5f3d PA |
2814 | void |
2815 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2816 | { |
2817 | struct thread_info *tp; | |
2818 | struct btrace_insn_iterator begin; | |
2819 | ||
2820 | tp = require_btrace_thread (); | |
2821 | ||
2822 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2823 | |
2824 | /* Skip gaps at the beginning of the trace. */ | |
2825 | while (btrace_insn_get (&begin) == NULL) | |
2826 | { | |
2827 | unsigned int steps; | |
2828 | ||
2829 | steps = btrace_insn_next (&begin, 1); | |
2830 | if (steps == 0) | |
2831 | error (_("No trace.")); | |
2832 | } | |
2833 | ||
066ce621 | 2834 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2835 | } |
2836 | ||
f6ac5f3d | 2837 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2838 | |
f6ac5f3d PA |
2839 | void |
2840 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2841 | { |
2842 | struct thread_info *tp; | |
2843 | ||
2844 | tp = require_btrace_thread (); | |
2845 | ||
2846 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2847 | } |
2848 | ||
f6ac5f3d | 2849 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2850 | |
f6ac5f3d PA |
2851 | void |
2852 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2853 | { |
2854 | struct thread_info *tp; | |
2855 | struct btrace_insn_iterator it; | |
2856 | unsigned int number; | |
2857 | int found; | |
2858 | ||
2859 | number = insn; | |
2860 | ||
2861 | /* Check for wrap-arounds. */ | |
2862 | if (number != insn) | |
2863 | error (_("Instruction number out of range.")); | |
2864 | ||
2865 | tp = require_btrace_thread (); | |
2866 | ||
2867 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2868 | |
2869 | /* Check if the instruction could not be found or is a gap. */ | |
2870 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2871 | error (_("No such instruction.")); |
2872 | ||
2873 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2874 | } |
2875 | ||
f6ac5f3d | 2876 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2877 | |
f6ac5f3d PA |
2878 | void |
2879 | record_btrace_target::record_stop_replaying () | |
797094dd MM |
2880 | { |
2881 | struct thread_info *tp; | |
2882 | ||
2883 | ALL_NON_EXITED_THREADS (tp) | |
2884 | record_btrace_stop_replaying (tp); | |
2885 | } | |
2886 | ||
f6ac5f3d | 2887 | /* The execution_direction target method. */ |
70ad5bff | 2888 | |
f6ac5f3d PA |
2889 | enum exec_direction_kind |
2890 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2891 | { |
2892 | return record_btrace_resume_exec_dir; | |
2893 | } | |
2894 | ||
f6ac5f3d | 2895 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2896 | |
f6ac5f3d PA |
2897 | void |
2898 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2899 | { |
2900 | record_btrace_generating_corefile = 1; | |
2901 | } | |
2902 | ||
f6ac5f3d | 2903 | /* The done_generating_core target method. */ |
aef92902 | 2904 | |
f6ac5f3d PA |
2905 | void |
2906 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2907 | { |
2908 | record_btrace_generating_corefile = 0; | |
2909 | } | |
2910 | ||
f4abbc16 MM |
2911 | /* Start recording in BTS format. */ |
2912 | ||
2913 | static void | |
cdb34d4a | 2914 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2915 | { |
f4abbc16 MM |
2916 | if (args != NULL && *args != 0) |
2917 | error (_("Invalid argument.")); | |
2918 | ||
2919 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2920 | ||
492d29ea PA |
2921 | TRY |
2922 | { | |
95a6b0a1 | 2923 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2924 | } |
2925 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2926 | { |
2927 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2928 | throw_exception (exception); | |
2929 | } | |
492d29ea | 2930 | END_CATCH |
f4abbc16 MM |
2931 | } |
2932 | ||
bc504a31 | 2933 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2934 | |
2935 | static void | |
cdb34d4a | 2936 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2937 | { |
2938 | if (args != NULL && *args != 0) | |
2939 | error (_("Invalid argument.")); | |
2940 | ||
b20a6524 | 2941 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2942 | |
492d29ea PA |
2943 | TRY |
2944 | { | |
95a6b0a1 | 2945 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2946 | } |
2947 | CATCH (exception, RETURN_MASK_ALL) | |
2948 | { | |
2949 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2950 | throw_exception (exception); | |
2951 | } | |
2952 | END_CATCH | |
afedecd3 MM |
2953 | } |
2954 | ||
b20a6524 MM |
2955 | /* Alias for "target record". */ |
2956 | ||
2957 | static void | |
981a3fb3 | 2958 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2959 | { |
2960 | if (args != NULL && *args != 0) | |
2961 | error (_("Invalid argument.")); | |
2962 | ||
2963 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2964 | ||
2965 | TRY | |
2966 | { | |
95a6b0a1 | 2967 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2968 | } |
2969 | CATCH (exception, RETURN_MASK_ALL) | |
2970 | { | |
2971 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2972 | ||
2973 | TRY | |
2974 | { | |
95a6b0a1 | 2975 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2976 | } |
2977 | CATCH (exception, RETURN_MASK_ALL) | |
2978 | { | |
2979 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2980 | throw_exception (exception); | |
2981 | } | |
2982 | END_CATCH | |
2983 | } | |
2984 | END_CATCH | |
2985 | } | |
2986 | ||
67b5c0c1 MM |
2987 | /* The "set record btrace" command. */ |
2988 | ||
2989 | static void | |
981a3fb3 | 2990 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2991 | { |
b85310e1 MM |
2992 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2993 | "by an appropriate subcommand.\n")); | |
2994 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
2995 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
2996 | } |
2997 | ||
2998 | /* The "show record btrace" command. */ | |
2999 | ||
3000 | static void | |
981a3fb3 | 3001 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
3002 | { |
3003 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
3004 | } | |
3005 | ||
3006 | /* The "show record btrace replay-memory-access" command. */ | |
3007 | ||
3008 | static void | |
3009 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
3010 | struct cmd_list_element *c, const char *value) | |
3011 | { | |
3012 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
3013 | replay_memory_access); | |
3014 | } | |
3015 | ||
4a4495d6 MM |
3016 | /* The "set record btrace cpu none" command. */ |
3017 | ||
3018 | static void | |
3019 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
3020 | { | |
3021 | if (args != nullptr && *args != 0) | |
3022 | error (_("Trailing junk: '%s'."), args); | |
3023 | ||
3024 | record_btrace_cpu_state = CS_NONE; | |
3025 | } | |
3026 | ||
3027 | /* The "set record btrace cpu auto" command. */ | |
3028 | ||
3029 | static void | |
3030 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3031 | { | |
3032 | if (args != nullptr && *args != 0) | |
3033 | error (_("Trailing junk: '%s'."), args); | |
3034 | ||
3035 | record_btrace_cpu_state = CS_AUTO; | |
3036 | } | |
3037 | ||
3038 | /* The "set record btrace cpu" command. */ | |
3039 | ||
3040 | static void | |
3041 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3042 | { | |
3043 | if (args == nullptr) | |
3044 | args = ""; | |
3045 | ||
3046 | /* We use a hard-coded vendor string for now. */ | |
3047 | unsigned int family, model, stepping; | |
3048 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3049 | &model, &l1, &stepping, &l2); | |
3050 | if (matches == 3) | |
3051 | { | |
3052 | if (strlen (args) != l2) | |
3053 | error (_("Trailing junk: '%s'."), args + l2); | |
3054 | } | |
3055 | else if (matches == 2) | |
3056 | { | |
3057 | if (strlen (args) != l1) | |
3058 | error (_("Trailing junk: '%s'."), args + l1); | |
3059 | ||
3060 | stepping = 0; | |
3061 | } | |
3062 | else | |
3063 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3064 | ||
3065 | if (USHRT_MAX < family) | |
3066 | error (_("Cpu family too big.")); | |
3067 | ||
3068 | if (UCHAR_MAX < model) | |
3069 | error (_("Cpu model too big.")); | |
3070 | ||
3071 | if (UCHAR_MAX < stepping) | |
3072 | error (_("Cpu stepping too big.")); | |
3073 | ||
3074 | record_btrace_cpu.vendor = CV_INTEL; | |
3075 | record_btrace_cpu.family = family; | |
3076 | record_btrace_cpu.model = model; | |
3077 | record_btrace_cpu.stepping = stepping; | |
3078 | ||
3079 | record_btrace_cpu_state = CS_CPU; | |
3080 | } | |
3081 | ||
3082 | /* The "show record btrace cpu" command. */ | |
3083 | ||
3084 | static void | |
3085 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3086 | { | |
3087 | const char *cpu; | |
3088 | ||
3089 | if (args != nullptr && *args != 0) | |
3090 | error (_("Trailing junk: '%s'."), args); | |
3091 | ||
3092 | switch (record_btrace_cpu_state) | |
3093 | { | |
3094 | case CS_AUTO: | |
3095 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3096 | return; | |
3097 | ||
3098 | case CS_NONE: | |
3099 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3100 | return; | |
3101 | ||
3102 | case CS_CPU: | |
3103 | switch (record_btrace_cpu.vendor) | |
3104 | { | |
3105 | case CV_INTEL: | |
3106 | if (record_btrace_cpu.stepping == 0) | |
3107 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3108 | record_btrace_cpu.family, | |
3109 | record_btrace_cpu.model); | |
3110 | else | |
3111 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3112 | record_btrace_cpu.family, | |
3113 | record_btrace_cpu.model, | |
3114 | record_btrace_cpu.stepping); | |
3115 | return; | |
3116 | } | |
3117 | } | |
3118 | ||
3119 | error (_("Internal error: bad cpu state.")); | |
3120 | } | |
3121 | ||
3122 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3123 | |
3124 | static void | |
981a3fb3 | 3125 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3126 | { |
3127 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3128 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3129 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3130 | all_commands, gdb_stdout); | |
3131 | } | |
3132 | ||
3133 | /* The "show record btrace bts" command. */ | |
3134 | ||
3135 | static void | |
981a3fb3 | 3136 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3137 | { |
3138 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3139 | } | |
3140 | ||
b20a6524 MM |
3141 | /* The "set record btrace pt" command. */ |
3142 | ||
3143 | static void | |
981a3fb3 | 3144 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3145 | { |
3146 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3147 | "by an appropriate subcommand.\n")); | |
3148 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3149 | all_commands, gdb_stdout); | |
3150 | } | |
3151 | ||
3152 | /* The "show record btrace pt" command. */ | |
3153 | ||
3154 | static void | |
981a3fb3 | 3155 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3156 | { |
3157 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3158 | } | |
3159 | ||
3160 | /* The "record bts buffer-size" show value function. */ | |
3161 | ||
3162 | static void | |
3163 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3164 | struct cmd_list_element *c, | |
3165 | const char *value) | |
3166 | { | |
3167 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3168 | value); | |
3169 | } | |
3170 | ||
3171 | /* The "record pt buffer-size" show value function. */ | |
3172 | ||
3173 | static void | |
3174 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3175 | struct cmd_list_element *c, | |
3176 | const char *value) | |
3177 | { | |
3178 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3179 | value); | |
3180 | } | |
3181 | ||
afedecd3 MM |
3182 | /* Initialize btrace commands. */ |
3183 | ||
3184 | void | |
3185 | _initialize_record_btrace (void) | |
3186 | { | |
f4abbc16 MM |
3187 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3188 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3189 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3190 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3191 | ||
f4abbc16 MM |
3192 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3193 | _("\ | |
3194 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3195 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3196 | This format may not be available on all processors."), | |
3197 | &record_btrace_cmdlist); | |
3198 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3199 | ||
b20a6524 MM |
3200 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3201 | _("\ | |
bc504a31 | 3202 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3203 | This format may not be available on all processors."), |
3204 | &record_btrace_cmdlist); | |
3205 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3206 | ||
67b5c0c1 MM |
3207 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3208 | _("Set record options"), &set_record_btrace_cmdlist, | |
3209 | "set record btrace ", 0, &set_record_cmdlist); | |
3210 | ||
3211 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3212 | _("Show record options"), &show_record_btrace_cmdlist, | |
3213 | "show record btrace ", 0, &show_record_cmdlist); | |
3214 | ||
3215 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3216 | replay_memory_access_types, &replay_memory_access, _("\ | |
3217 | Set what memory accesses are allowed during replay."), _("\ | |
3218 | Show what memory accesses are allowed during replay."), | |
3219 | _("Default is READ-ONLY.\n\n\ | |
3220 | The btrace record target does not trace data.\n\ | |
3221 | The memory therefore corresponds to the live target and not \ | |
3222 | to the current replay position.\n\n\ | |
3223 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3224 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3225 | replay."), | |
3226 | NULL, cmd_show_replay_memory_access, | |
3227 | &set_record_btrace_cmdlist, | |
3228 | &show_record_btrace_cmdlist); | |
3229 | ||
4a4495d6 MM |
3230 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3231 | _("\ | |
3232 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3233 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3234 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3235 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3236 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3237 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3238 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3239 | When set to \"none\", errata workarounds are disabled."), | |
3240 | &set_record_btrace_cpu_cmdlist, | |
3241 | _("set record btrace cpu "), 1, | |
3242 | &set_record_btrace_cmdlist); | |
3243 | ||
3244 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3245 | Automatically determine the cpu to be used for trace decode."), | |
3246 | &set_record_btrace_cpu_cmdlist); | |
3247 | ||
3248 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3249 | Do not enable errata workarounds for trace decode."), | |
3250 | &set_record_btrace_cpu_cmdlist); | |
3251 | ||
3252 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3253 | Show the cpu to be used for trace decode."), | |
3254 | &show_record_btrace_cmdlist); | |
3255 | ||
d33501a5 MM |
3256 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3257 | _("Set record btrace bts options"), | |
3258 | &set_record_btrace_bts_cmdlist, | |
3259 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3260 | ||
3261 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3262 | _("Show record btrace bts options"), | |
3263 | &show_record_btrace_bts_cmdlist, | |
3264 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3265 | ||
3266 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3267 | &record_btrace_conf.bts.size, | |
3268 | _("Set the record/replay bts buffer size."), | |
3269 | _("Show the record/replay bts buffer size."), _("\ | |
3270 | When starting recording request a trace buffer of this size. \ | |
3271 | The actual buffer size may differ from the requested size. \ | |
3272 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3273 | Bigger buffers allow longer recording but also take more time to process \ | |
3274 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3275 | The trace buffer size may not be changed while recording."), NULL, |
3276 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3277 | &set_record_btrace_bts_cmdlist, |
3278 | &show_record_btrace_bts_cmdlist); | |
3279 | ||
b20a6524 MM |
3280 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3281 | _("Set record btrace pt options"), | |
3282 | &set_record_btrace_pt_cmdlist, | |
3283 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3284 | ||
3285 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3286 | _("Show record btrace pt options"), | |
3287 | &show_record_btrace_pt_cmdlist, | |
3288 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3289 | ||
3290 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3291 | &record_btrace_conf.pt.size, | |
3292 | _("Set the record/replay pt buffer size."), | |
3293 | _("Show the record/replay pt buffer size."), _("\ | |
3294 | Bigger buffers allow longer recording but also take more time to process \ | |
3295 | the recorded execution.\n\ | |
3296 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3297 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3298 | &set_record_btrace_pt_cmdlist, | |
3299 | &show_record_btrace_pt_cmdlist); | |
3300 | ||
d9f719f1 | 3301 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3302 | |
3303 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3304 | xcalloc, xfree); | |
d33501a5 MM |
3305 | |
3306 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3307 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3308 | } |