Commit | Line | Data |
---|---|---|
afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
42a4f53d | 3 | Copyright (C) 2013-2019 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" | |
0747795c | 41 | #include "common/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: | |
d9f719f1 PA |
56 | const target_info &info () const override |
57 | { return record_btrace_target_info; } | |
f6ac5f3d | 58 | |
66b4deae PA |
59 | strata stratum () const override { return record_stratum; } |
60 | ||
f6ac5f3d PA |
61 | void close () override; |
62 | void async (int) override; | |
63 | ||
64 | void detach (inferior *inf, int from_tty) override | |
65 | { record_detach (this, inf, from_tty); } | |
66 | ||
67 | void disconnect (const char *, int) override; | |
68 | ||
69 | void mourn_inferior () override | |
70 | { record_mourn_inferior (this); } | |
71 | ||
72 | void kill () override | |
73 | { record_kill (this); } | |
74 | ||
75 | enum record_method record_method (ptid_t ptid) override; | |
76 | ||
77 | void stop_recording () override; | |
78 | void info_record () override; | |
79 | ||
80 | void insn_history (int size, gdb_disassembly_flags flags) override; | |
81 | void insn_history_from (ULONGEST from, int size, | |
82 | gdb_disassembly_flags flags) override; | |
83 | void insn_history_range (ULONGEST begin, ULONGEST end, | |
84 | gdb_disassembly_flags flags) override; | |
85 | void call_history (int size, record_print_flags flags) override; | |
86 | void call_history_from (ULONGEST begin, int size, record_print_flags flags) | |
87 | override; | |
88 | void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) | |
89 | override; | |
90 | ||
57810aa7 PA |
91 | bool record_is_replaying (ptid_t ptid) override; |
92 | bool record_will_replay (ptid_t ptid, int dir) override; | |
f6ac5f3d PA |
93 | void record_stop_replaying () override; |
94 | ||
95 | enum target_xfer_status xfer_partial (enum target_object object, | |
96 | const char *annex, | |
97 | gdb_byte *readbuf, | |
98 | const gdb_byte *writebuf, | |
99 | ULONGEST offset, ULONGEST len, | |
100 | ULONGEST *xfered_len) override; | |
101 | ||
102 | int insert_breakpoint (struct gdbarch *, | |
103 | struct bp_target_info *) override; | |
104 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
105 | enum remove_bp_reason) override; | |
106 | ||
107 | void fetch_registers (struct regcache *, int) override; | |
108 | ||
109 | void store_registers (struct regcache *, int) override; | |
110 | void prepare_to_store (struct regcache *) override; | |
111 | ||
112 | const struct frame_unwind *get_unwinder () override; | |
113 | ||
114 | const struct frame_unwind *get_tailcall_unwinder () override; | |
115 | ||
116 | void commit_resume () override; | |
117 | void resume (ptid_t, int, enum gdb_signal) override; | |
118 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
119 | ||
120 | void stop (ptid_t) override; | |
121 | void update_thread_list () override; | |
57810aa7 | 122 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
123 | void goto_record_begin () override; |
124 | void goto_record_end () override; | |
125 | void goto_record (ULONGEST insn) override; | |
126 | ||
57810aa7 | 127 | bool can_execute_reverse () override; |
f6ac5f3d | 128 | |
57810aa7 PA |
129 | bool stopped_by_sw_breakpoint () override; |
130 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 131 | |
57810aa7 PA |
132 | bool stopped_by_hw_breakpoint () override; |
133 | bool supports_stopped_by_hw_breakpoint () override; | |
f6ac5f3d PA |
134 | |
135 | enum exec_direction_kind execution_direction () override; | |
136 | void prepare_to_generate_core () override; | |
137 | void done_generating_core () override; | |
138 | }; | |
139 | ||
140 | static record_btrace_target record_btrace_ops; | |
141 | ||
142 | /* Initialize the record-btrace target ops. */ | |
afedecd3 | 143 | |
76727919 TT |
144 | /* Token associated with a new-thread observer enabling branch tracing |
145 | for the new thread. */ | |
3dcfdc58 | 146 | static const gdb::observers::token record_btrace_thread_observer_token {}; |
afedecd3 | 147 | |
67b5c0c1 MM |
148 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
149 | static const char replay_memory_access_read_only[] = "read-only"; | |
150 | static const char replay_memory_access_read_write[] = "read-write"; | |
151 | static const char *const replay_memory_access_types[] = | |
152 | { | |
153 | replay_memory_access_read_only, | |
154 | replay_memory_access_read_write, | |
155 | NULL | |
156 | }; | |
157 | ||
158 | /* The currently allowed replay memory access type. */ | |
159 | static const char *replay_memory_access = replay_memory_access_read_only; | |
160 | ||
4a4495d6 MM |
161 | /* The cpu state kinds. */ |
162 | enum record_btrace_cpu_state_kind | |
163 | { | |
164 | CS_AUTO, | |
165 | CS_NONE, | |
166 | CS_CPU | |
167 | }; | |
168 | ||
169 | /* The current cpu state. */ | |
170 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
171 | ||
172 | /* The current cpu for trace decode. */ | |
173 | static struct btrace_cpu record_btrace_cpu; | |
174 | ||
67b5c0c1 MM |
175 | /* Command lists for "set/show record btrace". */ |
176 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
177 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 178 | |
70ad5bff MM |
179 | /* The execution direction of the last resume we got. See record-full.c. */ |
180 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
181 | ||
182 | /* The async event handler for reverse/replay execution. */ | |
183 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
184 | ||
aef92902 MM |
185 | /* A flag indicating that we are currently generating a core file. */ |
186 | static int record_btrace_generating_corefile; | |
187 | ||
f4abbc16 MM |
188 | /* The current branch trace configuration. */ |
189 | static struct btrace_config record_btrace_conf; | |
190 | ||
191 | /* Command list for "record btrace". */ | |
192 | static struct cmd_list_element *record_btrace_cmdlist; | |
193 | ||
d33501a5 MM |
194 | /* Command lists for "set/show record btrace bts". */ |
195 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
196 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
197 | ||
b20a6524 MM |
198 | /* Command lists for "set/show record btrace pt". */ |
199 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
200 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
201 | ||
4a4495d6 MM |
202 | /* Command list for "set record btrace cpu". */ |
203 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
204 | ||
afedecd3 MM |
205 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
206 | ambiguities when used in if statements. */ | |
207 | ||
208 | #define DEBUG(msg, args...) \ | |
209 | do \ | |
210 | { \ | |
211 | if (record_debug != 0) \ | |
212 | fprintf_unfiltered (gdb_stdlog, \ | |
213 | "[record-btrace] " msg "\n", ##args); \ | |
214 | } \ | |
215 | while (0) | |
216 | ||
217 | ||
4a4495d6 MM |
218 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
219 | configured as auto. */ | |
220 | const struct btrace_cpu * | |
221 | record_btrace_get_cpu (void) | |
222 | { | |
223 | switch (record_btrace_cpu_state) | |
224 | { | |
225 | case CS_AUTO: | |
226 | return nullptr; | |
227 | ||
228 | case CS_NONE: | |
229 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
230 | /* Fall through. */ | |
231 | case CS_CPU: | |
232 | return &record_btrace_cpu; | |
233 | } | |
234 | ||
235 | error (_("Internal error: bad record btrace cpu state.")); | |
236 | } | |
237 | ||
afedecd3 | 238 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 239 | thread_info. |
afedecd3 MM |
240 | |
241 | Throws an error if there is no thread or no trace. This function never | |
242 | returns NULL. */ | |
243 | ||
066ce621 MM |
244 | static struct thread_info * |
245 | require_btrace_thread (void) | |
afedecd3 | 246 | { |
afedecd3 MM |
247 | DEBUG ("require"); |
248 | ||
00431a78 | 249 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
250 | error (_("No thread.")); |
251 | ||
00431a78 PA |
252 | thread_info *tp = inferior_thread (); |
253 | ||
cd4007e4 MM |
254 | validate_registers_access (); |
255 | ||
4a4495d6 | 256 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 257 | |
6e07b1d2 | 258 | if (btrace_is_empty (tp)) |
afedecd3 MM |
259 | error (_("No trace.")); |
260 | ||
066ce621 MM |
261 | return tp; |
262 | } | |
263 | ||
264 | /* Update the branch trace for the current thread and return a pointer to its | |
265 | branch trace information struct. | |
266 | ||
267 | Throws an error if there is no thread or no trace. This function never | |
268 | returns NULL. */ | |
269 | ||
270 | static struct btrace_thread_info * | |
271 | require_btrace (void) | |
272 | { | |
273 | struct thread_info *tp; | |
274 | ||
275 | tp = require_btrace_thread (); | |
276 | ||
277 | return &tp->btrace; | |
afedecd3 MM |
278 | } |
279 | ||
280 | /* Enable branch tracing for one thread. Warn on errors. */ | |
281 | ||
282 | static void | |
283 | record_btrace_enable_warn (struct thread_info *tp) | |
284 | { | |
492d29ea PA |
285 | TRY |
286 | { | |
287 | btrace_enable (tp, &record_btrace_conf); | |
288 | } | |
289 | CATCH (error, RETURN_MASK_ERROR) | |
290 | { | |
291 | warning ("%s", error.message); | |
292 | } | |
293 | END_CATCH | |
afedecd3 MM |
294 | } |
295 | ||
afedecd3 MM |
296 | /* Enable automatic tracing of new threads. */ |
297 | ||
298 | static void | |
299 | record_btrace_auto_enable (void) | |
300 | { | |
301 | DEBUG ("attach thread observer"); | |
302 | ||
76727919 TT |
303 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
304 | record_btrace_thread_observer_token); | |
afedecd3 MM |
305 | } |
306 | ||
307 | /* Disable automatic tracing of new threads. */ | |
308 | ||
309 | static void | |
310 | record_btrace_auto_disable (void) | |
311 | { | |
afedecd3 MM |
312 | DEBUG ("detach thread observer"); |
313 | ||
76727919 | 314 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
315 | } |
316 | ||
70ad5bff MM |
317 | /* The record-btrace async event handler function. */ |
318 | ||
319 | static void | |
320 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
321 | { | |
322 | inferior_event_handler (INF_REG_EVENT, NULL); | |
323 | } | |
324 | ||
c0272db5 TW |
325 | /* See record-btrace.h. */ |
326 | ||
327 | void | |
328 | record_btrace_push_target (void) | |
329 | { | |
330 | const char *format; | |
331 | ||
332 | record_btrace_auto_enable (); | |
333 | ||
334 | push_target (&record_btrace_ops); | |
335 | ||
336 | record_btrace_async_inferior_event_handler | |
337 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
338 | NULL); | |
339 | record_btrace_generating_corefile = 0; | |
340 | ||
341 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 342 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
343 | } |
344 | ||
228f1508 SM |
345 | /* Disable btrace on a set of threads on scope exit. */ |
346 | ||
347 | struct scoped_btrace_disable | |
348 | { | |
349 | scoped_btrace_disable () = default; | |
350 | ||
351 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
352 | ||
353 | ~scoped_btrace_disable () | |
354 | { | |
355 | for (thread_info *tp : m_threads) | |
356 | btrace_disable (tp); | |
357 | } | |
358 | ||
359 | void add_thread (thread_info *thread) | |
360 | { | |
361 | m_threads.push_front (thread); | |
362 | } | |
363 | ||
364 | void discard () | |
365 | { | |
366 | m_threads.clear (); | |
367 | } | |
368 | ||
369 | private: | |
370 | std::forward_list<thread_info *> m_threads; | |
371 | }; | |
372 | ||
d9f719f1 | 373 | /* Open target record-btrace. */ |
afedecd3 | 374 | |
d9f719f1 PA |
375 | static void |
376 | record_btrace_target_open (const char *args, int from_tty) | |
afedecd3 | 377 | { |
228f1508 SM |
378 | /* If we fail to enable btrace for one thread, disable it for the threads for |
379 | which it was successfully enabled. */ | |
380 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
381 | |
382 | DEBUG ("open"); | |
383 | ||
8213266a | 384 | record_preopen (); |
afedecd3 MM |
385 | |
386 | if (!target_has_execution) | |
387 | error (_("The program is not being run.")); | |
388 | ||
08036331 | 389 | for (thread_info *tp : all_non_exited_threads ()) |
5d5658a1 | 390 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 391 | { |
f4abbc16 | 392 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 393 | |
228f1508 | 394 | btrace_disable.add_thread (tp); |
afedecd3 MM |
395 | } |
396 | ||
c0272db5 | 397 | record_btrace_push_target (); |
afedecd3 | 398 | |
228f1508 | 399 | btrace_disable.discard (); |
afedecd3 MM |
400 | } |
401 | ||
f6ac5f3d | 402 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 403 | |
f6ac5f3d PA |
404 | void |
405 | record_btrace_target::stop_recording () | |
afedecd3 | 406 | { |
afedecd3 MM |
407 | DEBUG ("stop recording"); |
408 | ||
409 | record_btrace_auto_disable (); | |
410 | ||
08036331 | 411 | for (thread_info *tp : all_non_exited_threads ()) |
afedecd3 MM |
412 | if (tp->btrace.target != NULL) |
413 | btrace_disable (tp); | |
414 | } | |
415 | ||
f6ac5f3d | 416 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 417 | |
f6ac5f3d PA |
418 | void |
419 | record_btrace_target::disconnect (const char *args, | |
420 | int from_tty) | |
c0272db5 | 421 | { |
b6a8c27b | 422 | struct target_ops *beneath = this->beneath (); |
c0272db5 TW |
423 | |
424 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 425 | unpush_target (this); |
c0272db5 TW |
426 | |
427 | /* Forward disconnect. */ | |
f6ac5f3d | 428 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
429 | } |
430 | ||
f6ac5f3d | 431 | /* The close method of target record-btrace. */ |
afedecd3 | 432 | |
f6ac5f3d PA |
433 | void |
434 | record_btrace_target::close () | |
afedecd3 | 435 | { |
70ad5bff MM |
436 | if (record_btrace_async_inferior_event_handler != NULL) |
437 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
438 | ||
99c819ee MM |
439 | /* Make sure automatic recording gets disabled even if we did not stop |
440 | recording before closing the record-btrace target. */ | |
441 | record_btrace_auto_disable (); | |
442 | ||
568e808b MM |
443 | /* We should have already stopped recording. |
444 | Tear down btrace in case we have not. */ | |
08036331 | 445 | for (thread_info *tp : all_non_exited_threads ()) |
568e808b | 446 | btrace_teardown (tp); |
afedecd3 MM |
447 | } |
448 | ||
f6ac5f3d | 449 | /* The async method of target record-btrace. */ |
b7d2e916 | 450 | |
f6ac5f3d PA |
451 | void |
452 | record_btrace_target::async (int enable) | |
b7d2e916 | 453 | { |
6a3753b3 | 454 | if (enable) |
b7d2e916 PA |
455 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
456 | else | |
457 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
458 | ||
b6a8c27b | 459 | this->beneath ()->async (enable); |
b7d2e916 PA |
460 | } |
461 | ||
d33501a5 MM |
462 | /* Adjusts the size and returns a human readable size suffix. */ |
463 | ||
464 | static const char * | |
465 | record_btrace_adjust_size (unsigned int *size) | |
466 | { | |
467 | unsigned int sz; | |
468 | ||
469 | sz = *size; | |
470 | ||
471 | if ((sz & ((1u << 30) - 1)) == 0) | |
472 | { | |
473 | *size = sz >> 30; | |
474 | return "GB"; | |
475 | } | |
476 | else if ((sz & ((1u << 20) - 1)) == 0) | |
477 | { | |
478 | *size = sz >> 20; | |
479 | return "MB"; | |
480 | } | |
481 | else if ((sz & ((1u << 10) - 1)) == 0) | |
482 | { | |
483 | *size = sz >> 10; | |
484 | return "kB"; | |
485 | } | |
486 | else | |
487 | return ""; | |
488 | } | |
489 | ||
490 | /* Print a BTS configuration. */ | |
491 | ||
492 | static void | |
493 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
494 | { | |
495 | const char *suffix; | |
496 | unsigned int size; | |
497 | ||
498 | size = conf->size; | |
499 | if (size > 0) | |
500 | { | |
501 | suffix = record_btrace_adjust_size (&size); | |
502 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
503 | } | |
504 | } | |
505 | ||
bc504a31 | 506 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
507 | |
508 | static void | |
509 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
510 | { | |
511 | const char *suffix; | |
512 | unsigned int size; | |
513 | ||
514 | size = conf->size; | |
515 | if (size > 0) | |
516 | { | |
517 | suffix = record_btrace_adjust_size (&size); | |
518 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
519 | } | |
520 | } | |
521 | ||
d33501a5 MM |
522 | /* Print a branch tracing configuration. */ |
523 | ||
524 | static void | |
525 | record_btrace_print_conf (const struct btrace_config *conf) | |
526 | { | |
527 | printf_unfiltered (_("Recording format: %s.\n"), | |
528 | btrace_format_string (conf->format)); | |
529 | ||
530 | switch (conf->format) | |
531 | { | |
532 | case BTRACE_FORMAT_NONE: | |
533 | return; | |
534 | ||
535 | case BTRACE_FORMAT_BTS: | |
536 | record_btrace_print_bts_conf (&conf->bts); | |
537 | return; | |
b20a6524 MM |
538 | |
539 | case BTRACE_FORMAT_PT: | |
540 | record_btrace_print_pt_conf (&conf->pt); | |
541 | return; | |
d33501a5 MM |
542 | } |
543 | ||
544 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
545 | } | |
546 | ||
f6ac5f3d | 547 | /* The info_record method of target record-btrace. */ |
afedecd3 | 548 | |
f6ac5f3d PA |
549 | void |
550 | record_btrace_target::info_record () | |
afedecd3 MM |
551 | { |
552 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 553 | const struct btrace_config *conf; |
afedecd3 | 554 | struct thread_info *tp; |
31fd9caa | 555 | unsigned int insns, calls, gaps; |
afedecd3 MM |
556 | |
557 | DEBUG ("info"); | |
558 | ||
559 | tp = find_thread_ptid (inferior_ptid); | |
560 | if (tp == NULL) | |
561 | error (_("No thread.")); | |
562 | ||
cd4007e4 MM |
563 | validate_registers_access (); |
564 | ||
f4abbc16 MM |
565 | btinfo = &tp->btrace; |
566 | ||
f6ac5f3d | 567 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 568 | if (conf != NULL) |
d33501a5 | 569 | record_btrace_print_conf (conf); |
f4abbc16 | 570 | |
4a4495d6 | 571 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 572 | |
23a7fe75 MM |
573 | insns = 0; |
574 | calls = 0; | |
31fd9caa | 575 | gaps = 0; |
23a7fe75 | 576 | |
6e07b1d2 | 577 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
578 | { |
579 | struct btrace_call_iterator call; | |
580 | struct btrace_insn_iterator insn; | |
581 | ||
582 | btrace_call_end (&call, btinfo); | |
583 | btrace_call_prev (&call, 1); | |
5de9129b | 584 | calls = btrace_call_number (&call); |
23a7fe75 MM |
585 | |
586 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 587 | insns = btrace_insn_number (&insn); |
31fd9caa | 588 | |
69090cee TW |
589 | /* If the last instruction is not a gap, it is the current instruction |
590 | that is not actually part of the record. */ | |
591 | if (btrace_insn_get (&insn) != NULL) | |
592 | insns -= 1; | |
31fd9caa MM |
593 | |
594 | gaps = btinfo->ngaps; | |
23a7fe75 | 595 | } |
afedecd3 | 596 | |
31fd9caa | 597 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 PA |
598 | "for thread %s (%s).\n"), insns, calls, gaps, |
599 | print_thread_id (tp), target_pid_to_str (tp->ptid)); | |
07bbe694 MM |
600 | |
601 | if (btrace_is_replaying (tp)) | |
602 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
603 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
604 | } |
605 | ||
31fd9caa MM |
606 | /* Print a decode error. */ |
607 | ||
608 | static void | |
609 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
610 | enum btrace_format format) | |
611 | { | |
508352a9 | 612 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 613 | |
112e8700 | 614 | uiout->text (_("[")); |
508352a9 TW |
615 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
616 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 617 | { |
112e8700 SM |
618 | uiout->text (_("decode error (")); |
619 | uiout->field_int ("errcode", errcode); | |
620 | uiout->text (_("): ")); | |
31fd9caa | 621 | } |
112e8700 SM |
622 | uiout->text (errstr); |
623 | uiout->text (_("]\n")); | |
31fd9caa MM |
624 | } |
625 | ||
afedecd3 MM |
626 | /* Print an unsigned int. */ |
627 | ||
628 | static void | |
629 | ui_out_field_uint (struct ui_out *uiout, const char *fld, unsigned int val) | |
630 | { | |
112e8700 | 631 | uiout->field_fmt (fld, "%u", val); |
afedecd3 MM |
632 | } |
633 | ||
f94cc897 MM |
634 | /* A range of source lines. */ |
635 | ||
636 | struct btrace_line_range | |
637 | { | |
638 | /* The symtab this line is from. */ | |
639 | struct symtab *symtab; | |
640 | ||
641 | /* The first line (inclusive). */ | |
642 | int begin; | |
643 | ||
644 | /* The last line (exclusive). */ | |
645 | int end; | |
646 | }; | |
647 | ||
648 | /* Construct a line range. */ | |
649 | ||
650 | static struct btrace_line_range | |
651 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
652 | { | |
653 | struct btrace_line_range range; | |
654 | ||
655 | range.symtab = symtab; | |
656 | range.begin = begin; | |
657 | range.end = end; | |
658 | ||
659 | return range; | |
660 | } | |
661 | ||
662 | /* Add a line to a line range. */ | |
663 | ||
664 | static struct btrace_line_range | |
665 | btrace_line_range_add (struct btrace_line_range range, int line) | |
666 | { | |
667 | if (range.end <= range.begin) | |
668 | { | |
669 | /* This is the first entry. */ | |
670 | range.begin = line; | |
671 | range.end = line + 1; | |
672 | } | |
673 | else if (line < range.begin) | |
674 | range.begin = line; | |
675 | else if (range.end < line) | |
676 | range.end = line; | |
677 | ||
678 | return range; | |
679 | } | |
680 | ||
681 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
682 | ||
683 | static int | |
684 | btrace_line_range_is_empty (struct btrace_line_range range) | |
685 | { | |
686 | return range.end <= range.begin; | |
687 | } | |
688 | ||
689 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
690 | ||
691 | static int | |
692 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
693 | struct btrace_line_range rhs) | |
694 | { | |
695 | return ((lhs.symtab == rhs.symtab) | |
696 | && (lhs.begin <= rhs.begin) | |
697 | && (rhs.end <= lhs.end)); | |
698 | } | |
699 | ||
700 | /* Find the line range associated with PC. */ | |
701 | ||
702 | static struct btrace_line_range | |
703 | btrace_find_line_range (CORE_ADDR pc) | |
704 | { | |
705 | struct btrace_line_range range; | |
706 | struct linetable_entry *lines; | |
707 | struct linetable *ltable; | |
708 | struct symtab *symtab; | |
709 | int nlines, i; | |
710 | ||
711 | symtab = find_pc_line_symtab (pc); | |
712 | if (symtab == NULL) | |
713 | return btrace_mk_line_range (NULL, 0, 0); | |
714 | ||
715 | ltable = SYMTAB_LINETABLE (symtab); | |
716 | if (ltable == NULL) | |
717 | return btrace_mk_line_range (symtab, 0, 0); | |
718 | ||
719 | nlines = ltable->nitems; | |
720 | lines = ltable->item; | |
721 | if (nlines <= 0) | |
722 | return btrace_mk_line_range (symtab, 0, 0); | |
723 | ||
724 | range = btrace_mk_line_range (symtab, 0, 0); | |
725 | for (i = 0; i < nlines - 1; i++) | |
726 | { | |
727 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
728 | range = btrace_line_range_add (range, lines[i].line); | |
729 | } | |
730 | ||
731 | return range; | |
732 | } | |
733 | ||
734 | /* Print source lines in LINES to UIOUT. | |
735 | ||
736 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
737 | instructions corresponding to that source line. When printing a new source | |
738 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
739 | the new source line. If the source line range in LINES is not empty, this | |
740 | function will leave the cleanup chain for the last printed source line open | |
741 | so instructions can be added to it. */ | |
742 | ||
743 | static void | |
744 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
745 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
746 | gdb::optional<ui_out_emit_list> *asm_list, | |
747 | gdb_disassembly_flags flags) | |
f94cc897 | 748 | { |
8d297bbf | 749 | print_source_lines_flags psl_flags; |
f94cc897 | 750 | |
f94cc897 MM |
751 | if (flags & DISASSEMBLY_FILENAME) |
752 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
753 | ||
7ea78b59 | 754 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 755 | { |
7ea78b59 | 756 | asm_list->reset (); |
f94cc897 | 757 | |
7ea78b59 | 758 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
759 | |
760 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
761 | ||
7ea78b59 | 762 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
763 | } |
764 | } | |
765 | ||
afedecd3 MM |
766 | /* Disassemble a section of the recorded instruction trace. */ |
767 | ||
768 | static void | |
23a7fe75 | 769 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 770 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 771 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
772 | const struct btrace_insn_iterator *end, |
773 | gdb_disassembly_flags flags) | |
afedecd3 | 774 | { |
9a24775b PA |
775 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
776 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 777 | |
f94cc897 MM |
778 | flags |= DISASSEMBLY_SPECULATIVE; |
779 | ||
7ea78b59 SM |
780 | struct gdbarch *gdbarch = target_gdbarch (); |
781 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 782 | |
7ea78b59 | 783 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 784 | |
7ea78b59 SM |
785 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
786 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 787 | |
8b172ce7 PA |
788 | gdb_pretty_print_disassembler disasm (gdbarch); |
789 | ||
7ea78b59 SM |
790 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
791 | btrace_insn_next (&it, 1)) | |
afedecd3 | 792 | { |
23a7fe75 MM |
793 | const struct btrace_insn *insn; |
794 | ||
795 | insn = btrace_insn_get (&it); | |
796 | ||
31fd9caa MM |
797 | /* A NULL instruction indicates a gap in the trace. */ |
798 | if (insn == NULL) | |
799 | { | |
800 | const struct btrace_config *conf; | |
801 | ||
802 | conf = btrace_conf (btinfo); | |
afedecd3 | 803 | |
31fd9caa MM |
804 | /* We have trace so we must have a configuration. */ |
805 | gdb_assert (conf != NULL); | |
806 | ||
69090cee TW |
807 | uiout->field_fmt ("insn-number", "%u", |
808 | btrace_insn_number (&it)); | |
809 | uiout->text ("\t"); | |
810 | ||
811 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
812 | conf->format); |
813 | } | |
814 | else | |
815 | { | |
f94cc897 | 816 | struct disasm_insn dinsn; |
da8c46d2 | 817 | |
f94cc897 | 818 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 819 | { |
f94cc897 MM |
820 | struct btrace_line_range lines; |
821 | ||
822 | lines = btrace_find_line_range (insn->pc); | |
823 | if (!btrace_line_range_is_empty (lines) | |
824 | && !btrace_line_range_contains_range (last_lines, lines)) | |
825 | { | |
7ea78b59 SM |
826 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
827 | flags); | |
f94cc897 MM |
828 | last_lines = lines; |
829 | } | |
7ea78b59 | 830 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 831 | { |
7ea78b59 SM |
832 | gdb_assert (!asm_list.has_value ()); |
833 | ||
834 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
835 | ||
f94cc897 | 836 | /* No source information. */ |
7ea78b59 | 837 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
838 | } |
839 | ||
7ea78b59 SM |
840 | gdb_assert (src_and_asm_tuple.has_value ()); |
841 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 842 | } |
da8c46d2 | 843 | |
f94cc897 MM |
844 | memset (&dinsn, 0, sizeof (dinsn)); |
845 | dinsn.number = btrace_insn_number (&it); | |
846 | dinsn.addr = insn->pc; | |
31fd9caa | 847 | |
da8c46d2 | 848 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 849 | dinsn.is_speculative = 1; |
da8c46d2 | 850 | |
8b172ce7 | 851 | disasm.pretty_print_insn (uiout, &dinsn, flags); |
31fd9caa | 852 | } |
afedecd3 MM |
853 | } |
854 | } | |
855 | ||
f6ac5f3d | 856 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 857 | |
f6ac5f3d PA |
858 | void |
859 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
860 | { |
861 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
862 | struct btrace_insn_history *history; |
863 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 864 | struct ui_out *uiout; |
23a7fe75 | 865 | unsigned int context, covered; |
afedecd3 MM |
866 | |
867 | uiout = current_uiout; | |
2e783024 | 868 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 869 | context = abs (size); |
afedecd3 MM |
870 | if (context == 0) |
871 | error (_("Bad record instruction-history-size.")); | |
872 | ||
23a7fe75 MM |
873 | btinfo = require_btrace (); |
874 | history = btinfo->insn_history; | |
875 | if (history == NULL) | |
afedecd3 | 876 | { |
07bbe694 | 877 | struct btrace_insn_iterator *replay; |
afedecd3 | 878 | |
9a24775b | 879 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 880 | |
07bbe694 MM |
881 | /* If we're replaying, we start at the replay position. Otherwise, we |
882 | start at the tail of the trace. */ | |
883 | replay = btinfo->replay; | |
884 | if (replay != NULL) | |
885 | begin = *replay; | |
886 | else | |
887 | btrace_insn_end (&begin, btinfo); | |
888 | ||
889 | /* We start from here and expand in the requested direction. Then we | |
890 | expand in the other direction, as well, to fill up any remaining | |
891 | context. */ | |
892 | end = begin; | |
893 | if (size < 0) | |
894 | { | |
895 | /* We want the current position covered, as well. */ | |
896 | covered = btrace_insn_next (&end, 1); | |
897 | covered += btrace_insn_prev (&begin, context - covered); | |
898 | covered += btrace_insn_next (&end, context - covered); | |
899 | } | |
900 | else | |
901 | { | |
902 | covered = btrace_insn_next (&end, context); | |
903 | covered += btrace_insn_prev (&begin, context - covered); | |
904 | } | |
afedecd3 MM |
905 | } |
906 | else | |
907 | { | |
23a7fe75 MM |
908 | begin = history->begin; |
909 | end = history->end; | |
afedecd3 | 910 | |
9a24775b | 911 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 912 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 913 | |
23a7fe75 MM |
914 | if (size < 0) |
915 | { | |
916 | end = begin; | |
917 | covered = btrace_insn_prev (&begin, context); | |
918 | } | |
919 | else | |
920 | { | |
921 | begin = end; | |
922 | covered = btrace_insn_next (&end, context); | |
923 | } | |
afedecd3 MM |
924 | } |
925 | ||
23a7fe75 | 926 | if (covered > 0) |
31fd9caa | 927 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
928 | else |
929 | { | |
930 | if (size < 0) | |
931 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
932 | else | |
933 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
934 | } | |
afedecd3 | 935 | |
23a7fe75 | 936 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
937 | } |
938 | ||
f6ac5f3d | 939 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 940 | |
f6ac5f3d PA |
941 | void |
942 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
943 | gdb_disassembly_flags flags) | |
afedecd3 MM |
944 | { |
945 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 946 | struct btrace_insn_iterator begin, end; |
afedecd3 | 947 | struct ui_out *uiout; |
23a7fe75 MM |
948 | unsigned int low, high; |
949 | int found; | |
afedecd3 MM |
950 | |
951 | uiout = current_uiout; | |
2e783024 | 952 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
953 | low = from; |
954 | high = to; | |
afedecd3 | 955 | |
9a24775b | 956 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
957 | |
958 | /* Check for wrap-arounds. */ | |
23a7fe75 | 959 | if (low != from || high != to) |
afedecd3 MM |
960 | error (_("Bad range.")); |
961 | ||
0688d04e | 962 | if (high < low) |
afedecd3 MM |
963 | error (_("Bad range.")); |
964 | ||
23a7fe75 | 965 | btinfo = require_btrace (); |
afedecd3 | 966 | |
23a7fe75 MM |
967 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
968 | if (found == 0) | |
969 | error (_("Range out of bounds.")); | |
afedecd3 | 970 | |
23a7fe75 MM |
971 | found = btrace_find_insn_by_number (&end, btinfo, high); |
972 | if (found == 0) | |
0688d04e MM |
973 | { |
974 | /* Silently truncate the range. */ | |
975 | btrace_insn_end (&end, btinfo); | |
976 | } | |
977 | else | |
978 | { | |
979 | /* We want both begin and end to be inclusive. */ | |
980 | btrace_insn_next (&end, 1); | |
981 | } | |
afedecd3 | 982 | |
31fd9caa | 983 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 984 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
985 | } |
986 | ||
f6ac5f3d | 987 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 988 | |
f6ac5f3d PA |
989 | void |
990 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
991 | gdb_disassembly_flags flags) | |
afedecd3 MM |
992 | { |
993 | ULONGEST begin, end, context; | |
994 | ||
995 | context = abs (size); | |
0688d04e MM |
996 | if (context == 0) |
997 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
998 | |
999 | if (size < 0) | |
1000 | { | |
1001 | end = from; | |
1002 | ||
1003 | if (from < context) | |
1004 | begin = 0; | |
1005 | else | |
0688d04e | 1006 | begin = from - context + 1; |
afedecd3 MM |
1007 | } |
1008 | else | |
1009 | { | |
1010 | begin = from; | |
0688d04e | 1011 | end = from + context - 1; |
afedecd3 MM |
1012 | |
1013 | /* Check for wrap-around. */ | |
1014 | if (end < begin) | |
1015 | end = ULONGEST_MAX; | |
1016 | } | |
1017 | ||
f6ac5f3d | 1018 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1019 | } |
1020 | ||
1021 | /* Print the instruction number range for a function call history line. */ | |
1022 | ||
1023 | static void | |
23a7fe75 MM |
1024 | btrace_call_history_insn_range (struct ui_out *uiout, |
1025 | const struct btrace_function *bfun) | |
afedecd3 | 1026 | { |
7acbe133 MM |
1027 | unsigned int begin, end, size; |
1028 | ||
0860c437 | 1029 | size = bfun->insn.size (); |
7acbe133 | 1030 | gdb_assert (size > 0); |
afedecd3 | 1031 | |
23a7fe75 | 1032 | begin = bfun->insn_offset; |
7acbe133 | 1033 | end = begin + size - 1; |
afedecd3 | 1034 | |
23a7fe75 | 1035 | ui_out_field_uint (uiout, "insn begin", begin); |
112e8700 | 1036 | uiout->text (","); |
23a7fe75 | 1037 | ui_out_field_uint (uiout, "insn end", end); |
afedecd3 MM |
1038 | } |
1039 | ||
ce0dfbea MM |
1040 | /* Compute the lowest and highest source line for the instructions in BFUN |
1041 | and return them in PBEGIN and PEND. | |
1042 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1043 | result from inlining or macro expansion. */ | |
1044 | ||
1045 | static void | |
1046 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1047 | int *pbegin, int *pend) | |
1048 | { | |
ce0dfbea MM |
1049 | struct symtab *symtab; |
1050 | struct symbol *sym; | |
ce0dfbea MM |
1051 | int begin, end; |
1052 | ||
1053 | begin = INT_MAX; | |
1054 | end = INT_MIN; | |
1055 | ||
1056 | sym = bfun->sym; | |
1057 | if (sym == NULL) | |
1058 | goto out; | |
1059 | ||
1060 | symtab = symbol_symtab (sym); | |
1061 | ||
0860c437 | 1062 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1063 | { |
1064 | struct symtab_and_line sal; | |
1065 | ||
0860c437 | 1066 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1067 | if (sal.symtab != symtab || sal.line == 0) |
1068 | continue; | |
1069 | ||
325fac50 PA |
1070 | begin = std::min (begin, sal.line); |
1071 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1072 | } |
1073 | ||
1074 | out: | |
1075 | *pbegin = begin; | |
1076 | *pend = end; | |
1077 | } | |
1078 | ||
afedecd3 MM |
1079 | /* Print the source line information for a function call history line. */ |
1080 | ||
1081 | static void | |
23a7fe75 MM |
1082 | btrace_call_history_src_line (struct ui_out *uiout, |
1083 | const struct btrace_function *bfun) | |
afedecd3 MM |
1084 | { |
1085 | struct symbol *sym; | |
23a7fe75 | 1086 | int begin, end; |
afedecd3 MM |
1087 | |
1088 | sym = bfun->sym; | |
1089 | if (sym == NULL) | |
1090 | return; | |
1091 | ||
112e8700 | 1092 | uiout->field_string ("file", |
cbe56571 TT |
1093 | symtab_to_filename_for_display (symbol_symtab (sym)), |
1094 | ui_out_style_kind::FILE); | |
afedecd3 | 1095 | |
ce0dfbea | 1096 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1097 | if (end < begin) |
afedecd3 MM |
1098 | return; |
1099 | ||
112e8700 SM |
1100 | uiout->text (":"); |
1101 | uiout->field_int ("min line", begin); | |
afedecd3 | 1102 | |
23a7fe75 | 1103 | if (end == begin) |
afedecd3 MM |
1104 | return; |
1105 | ||
112e8700 SM |
1106 | uiout->text (","); |
1107 | uiout->field_int ("max line", end); | |
afedecd3 MM |
1108 | } |
1109 | ||
0b722aec MM |
1110 | /* Get the name of a branch trace function. */ |
1111 | ||
1112 | static const char * | |
1113 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1114 | { | |
1115 | struct minimal_symbol *msym; | |
1116 | struct symbol *sym; | |
1117 | ||
1118 | if (bfun == NULL) | |
1119 | return "??"; | |
1120 | ||
1121 | msym = bfun->msym; | |
1122 | sym = bfun->sym; | |
1123 | ||
1124 | if (sym != NULL) | |
1125 | return SYMBOL_PRINT_NAME (sym); | |
1126 | else if (msym != NULL) | |
efd66ac6 | 1127 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1128 | else |
1129 | return "??"; | |
1130 | } | |
1131 | ||
afedecd3 MM |
1132 | /* Disassemble a section of the recorded function trace. */ |
1133 | ||
1134 | static void | |
23a7fe75 | 1135 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1136 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1137 | const struct btrace_call_iterator *begin, |
1138 | const struct btrace_call_iterator *end, | |
8d297bbf | 1139 | int int_flags) |
afedecd3 | 1140 | { |
23a7fe75 | 1141 | struct btrace_call_iterator it; |
8d297bbf | 1142 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1143 | |
8d297bbf | 1144 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1145 | btrace_call_number (end)); |
afedecd3 | 1146 | |
23a7fe75 | 1147 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1148 | { |
23a7fe75 MM |
1149 | const struct btrace_function *bfun; |
1150 | struct minimal_symbol *msym; | |
1151 | struct symbol *sym; | |
1152 | ||
1153 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1154 | sym = bfun->sym; |
0b722aec | 1155 | msym = bfun->msym; |
23a7fe75 | 1156 | |
afedecd3 | 1157 | /* Print the function index. */ |
23a7fe75 | 1158 | ui_out_field_uint (uiout, "index", bfun->number); |
112e8700 | 1159 | uiout->text ("\t"); |
afedecd3 | 1160 | |
31fd9caa MM |
1161 | /* Indicate gaps in the trace. */ |
1162 | if (bfun->errcode != 0) | |
1163 | { | |
1164 | const struct btrace_config *conf; | |
1165 | ||
1166 | conf = btrace_conf (btinfo); | |
1167 | ||
1168 | /* We have trace so we must have a configuration. */ | |
1169 | gdb_assert (conf != NULL); | |
1170 | ||
1171 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1172 | ||
1173 | continue; | |
1174 | } | |
1175 | ||
8710b709 MM |
1176 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1177 | { | |
1178 | int level = bfun->level + btinfo->level, i; | |
1179 | ||
1180 | for (i = 0; i < level; ++i) | |
112e8700 | 1181 | uiout->text (" "); |
8710b709 MM |
1182 | } |
1183 | ||
1184 | if (sym != NULL) | |
cbe56571 TT |
1185 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym), |
1186 | ui_out_style_kind::FUNCTION); | |
8710b709 | 1187 | else if (msym != NULL) |
cbe56571 TT |
1188 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym), |
1189 | ui_out_style_kind::FUNCTION); | |
112e8700 | 1190 | else if (!uiout->is_mi_like_p ()) |
cbe56571 TT |
1191 | uiout->field_string ("function", "??", |
1192 | ui_out_style_kind::FUNCTION); | |
8710b709 | 1193 | |
1e038f67 | 1194 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1195 | { |
112e8700 | 1196 | uiout->text (_("\tinst ")); |
23a7fe75 | 1197 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1198 | } |
1199 | ||
1e038f67 | 1200 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1201 | { |
112e8700 | 1202 | uiout->text (_("\tat ")); |
23a7fe75 | 1203 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1204 | } |
1205 | ||
112e8700 | 1206 | uiout->text ("\n"); |
afedecd3 MM |
1207 | } |
1208 | } | |
1209 | ||
f6ac5f3d | 1210 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1211 | |
f6ac5f3d PA |
1212 | void |
1213 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1214 | { |
1215 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1216 | struct btrace_call_history *history; |
1217 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1218 | struct ui_out *uiout; |
23a7fe75 | 1219 | unsigned int context, covered; |
afedecd3 MM |
1220 | |
1221 | uiout = current_uiout; | |
2e783024 | 1222 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1223 | context = abs (size); |
afedecd3 MM |
1224 | if (context == 0) |
1225 | error (_("Bad record function-call-history-size.")); | |
1226 | ||
23a7fe75 MM |
1227 | btinfo = require_btrace (); |
1228 | history = btinfo->call_history; | |
1229 | if (history == NULL) | |
afedecd3 | 1230 | { |
07bbe694 | 1231 | struct btrace_insn_iterator *replay; |
afedecd3 | 1232 | |
0cb7c7b0 | 1233 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1234 | |
07bbe694 MM |
1235 | /* If we're replaying, we start at the replay position. Otherwise, we |
1236 | start at the tail of the trace. */ | |
1237 | replay = btinfo->replay; | |
1238 | if (replay != NULL) | |
1239 | { | |
07bbe694 | 1240 | begin.btinfo = btinfo; |
a0f1b963 | 1241 | begin.index = replay->call_index; |
07bbe694 MM |
1242 | } |
1243 | else | |
1244 | btrace_call_end (&begin, btinfo); | |
1245 | ||
1246 | /* We start from here and expand in the requested direction. Then we | |
1247 | expand in the other direction, as well, to fill up any remaining | |
1248 | context. */ | |
1249 | end = begin; | |
1250 | if (size < 0) | |
1251 | { | |
1252 | /* We want the current position covered, as well. */ | |
1253 | covered = btrace_call_next (&end, 1); | |
1254 | covered += btrace_call_prev (&begin, context - covered); | |
1255 | covered += btrace_call_next (&end, context - covered); | |
1256 | } | |
1257 | else | |
1258 | { | |
1259 | covered = btrace_call_next (&end, context); | |
1260 | covered += btrace_call_prev (&begin, context- covered); | |
1261 | } | |
afedecd3 MM |
1262 | } |
1263 | else | |
1264 | { | |
23a7fe75 MM |
1265 | begin = history->begin; |
1266 | end = history->end; | |
afedecd3 | 1267 | |
0cb7c7b0 | 1268 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1269 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1270 | |
23a7fe75 MM |
1271 | if (size < 0) |
1272 | { | |
1273 | end = begin; | |
1274 | covered = btrace_call_prev (&begin, context); | |
1275 | } | |
1276 | else | |
1277 | { | |
1278 | begin = end; | |
1279 | covered = btrace_call_next (&end, context); | |
1280 | } | |
afedecd3 MM |
1281 | } |
1282 | ||
23a7fe75 | 1283 | if (covered > 0) |
8710b709 | 1284 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1285 | else |
1286 | { | |
1287 | if (size < 0) | |
1288 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1289 | else | |
1290 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1291 | } | |
afedecd3 | 1292 | |
23a7fe75 | 1293 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1294 | } |
1295 | ||
f6ac5f3d | 1296 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1297 | |
f6ac5f3d PA |
1298 | void |
1299 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1300 | record_print_flags flags) | |
afedecd3 MM |
1301 | { |
1302 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1303 | struct btrace_call_iterator begin, end; |
afedecd3 | 1304 | struct ui_out *uiout; |
23a7fe75 MM |
1305 | unsigned int low, high; |
1306 | int found; | |
afedecd3 MM |
1307 | |
1308 | uiout = current_uiout; | |
2e783024 | 1309 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1310 | low = from; |
1311 | high = to; | |
afedecd3 | 1312 | |
0cb7c7b0 | 1313 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1314 | |
1315 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1316 | if (low != from || high != to) |
afedecd3 MM |
1317 | error (_("Bad range.")); |
1318 | ||
0688d04e | 1319 | if (high < low) |
afedecd3 MM |
1320 | error (_("Bad range.")); |
1321 | ||
23a7fe75 | 1322 | btinfo = require_btrace (); |
afedecd3 | 1323 | |
23a7fe75 MM |
1324 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1325 | if (found == 0) | |
1326 | error (_("Range out of bounds.")); | |
afedecd3 | 1327 | |
23a7fe75 MM |
1328 | found = btrace_find_call_by_number (&end, btinfo, high); |
1329 | if (found == 0) | |
0688d04e MM |
1330 | { |
1331 | /* Silently truncate the range. */ | |
1332 | btrace_call_end (&end, btinfo); | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | /* We want both begin and end to be inclusive. */ | |
1337 | btrace_call_next (&end, 1); | |
1338 | } | |
afedecd3 | 1339 | |
8710b709 | 1340 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1341 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1342 | } |
1343 | ||
f6ac5f3d | 1344 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1345 | |
f6ac5f3d PA |
1346 | void |
1347 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1348 | record_print_flags flags) | |
afedecd3 MM |
1349 | { |
1350 | ULONGEST begin, end, context; | |
1351 | ||
1352 | context = abs (size); | |
0688d04e MM |
1353 | if (context == 0) |
1354 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1355 | |
1356 | if (size < 0) | |
1357 | { | |
1358 | end = from; | |
1359 | ||
1360 | if (from < context) | |
1361 | begin = 0; | |
1362 | else | |
0688d04e | 1363 | begin = from - context + 1; |
afedecd3 MM |
1364 | } |
1365 | else | |
1366 | { | |
1367 | begin = from; | |
0688d04e | 1368 | end = from + context - 1; |
afedecd3 MM |
1369 | |
1370 | /* Check for wrap-around. */ | |
1371 | if (end < begin) | |
1372 | end = ULONGEST_MAX; | |
1373 | } | |
1374 | ||
f6ac5f3d | 1375 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1376 | } |
1377 | ||
f6ac5f3d | 1378 | /* The record_method method of target record-btrace. */ |
b158a20f | 1379 | |
f6ac5f3d PA |
1380 | enum record_method |
1381 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1382 | { |
b158a20f TW |
1383 | struct thread_info * const tp = find_thread_ptid (ptid); |
1384 | ||
1385 | if (tp == NULL) | |
1386 | error (_("No thread.")); | |
1387 | ||
1388 | if (tp->btrace.target == NULL) | |
1389 | return RECORD_METHOD_NONE; | |
1390 | ||
1391 | return RECORD_METHOD_BTRACE; | |
1392 | } | |
1393 | ||
f6ac5f3d | 1394 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1395 | |
57810aa7 | 1396 | bool |
f6ac5f3d | 1397 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 | 1398 | { |
08036331 PA |
1399 | for (thread_info *tp : all_non_exited_threads (ptid)) |
1400 | if (btrace_is_replaying (tp)) | |
57810aa7 | 1401 | return true; |
07bbe694 | 1402 | |
57810aa7 | 1403 | return false; |
07bbe694 MM |
1404 | } |
1405 | ||
f6ac5f3d | 1406 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1407 | |
57810aa7 | 1408 | bool |
f6ac5f3d | 1409 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1410 | { |
f6ac5f3d | 1411 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1412 | } |
1413 | ||
f6ac5f3d | 1414 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1415 | |
f6ac5f3d PA |
1416 | enum target_xfer_status |
1417 | record_btrace_target::xfer_partial (enum target_object object, | |
1418 | const char *annex, gdb_byte *readbuf, | |
1419 | const gdb_byte *writebuf, ULONGEST offset, | |
1420 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1421 | { |
633785ff | 1422 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1423 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1424 | && !record_btrace_generating_corefile |
f6ac5f3d | 1425 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1426 | { |
1427 | switch (object) | |
1428 | { | |
1429 | case TARGET_OBJECT_MEMORY: | |
1430 | { | |
1431 | struct target_section *section; | |
1432 | ||
1433 | /* We do not allow writing memory in general. */ | |
1434 | if (writebuf != NULL) | |
9b409511 YQ |
1435 | { |
1436 | *xfered_len = len; | |
bc113b4e | 1437 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1438 | } |
633785ff MM |
1439 | |
1440 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1441 | section = target_section_by_addr (this, offset); |
633785ff MM |
1442 | if (section != NULL) |
1443 | { | |
1444 | /* Check if the section we found is readonly. */ | |
1445 | if ((bfd_get_section_flags (section->the_bfd_section->owner, | |
1446 | section->the_bfd_section) | |
1447 | & SEC_READONLY) != 0) | |
1448 | { | |
1449 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1450 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1451 | break; |
1452 | } | |
1453 | } | |
1454 | ||
9b409511 | 1455 | *xfered_len = len; |
bc113b4e | 1456 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1457 | } |
1458 | } | |
1459 | } | |
1460 | ||
1461 | /* Forward the request. */ | |
b6a8c27b PA |
1462 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1463 | offset, len, xfered_len); | |
633785ff MM |
1464 | } |
1465 | ||
f6ac5f3d | 1466 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1467 | |
f6ac5f3d PA |
1468 | int |
1469 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1470 | struct bp_target_info *bp_tgt) | |
633785ff | 1471 | { |
67b5c0c1 MM |
1472 | const char *old; |
1473 | int ret; | |
633785ff MM |
1474 | |
1475 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1476 | duration of this function. */ | |
67b5c0c1 MM |
1477 | old = replay_memory_access; |
1478 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1479 | |
1480 | ret = 0; | |
492d29ea PA |
1481 | TRY |
1482 | { | |
b6a8c27b | 1483 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1484 | } |
492d29ea PA |
1485 | CATCH (except, RETURN_MASK_ALL) |
1486 | { | |
6c63c96a | 1487 | replay_memory_access = old; |
492d29ea PA |
1488 | throw_exception (except); |
1489 | } | |
1490 | END_CATCH | |
6c63c96a | 1491 | replay_memory_access = old; |
633785ff MM |
1492 | |
1493 | return ret; | |
1494 | } | |
1495 | ||
f6ac5f3d | 1496 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1497 | |
f6ac5f3d PA |
1498 | int |
1499 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1500 | struct bp_target_info *bp_tgt, | |
1501 | enum remove_bp_reason reason) | |
633785ff | 1502 | { |
67b5c0c1 MM |
1503 | const char *old; |
1504 | int ret; | |
633785ff MM |
1505 | |
1506 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1507 | duration of this function. */ | |
67b5c0c1 MM |
1508 | old = replay_memory_access; |
1509 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1510 | |
1511 | ret = 0; | |
492d29ea PA |
1512 | TRY |
1513 | { | |
b6a8c27b | 1514 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1515 | } |
492d29ea PA |
1516 | CATCH (except, RETURN_MASK_ALL) |
1517 | { | |
6c63c96a | 1518 | replay_memory_access = old; |
492d29ea PA |
1519 | throw_exception (except); |
1520 | } | |
1521 | END_CATCH | |
6c63c96a | 1522 | replay_memory_access = old; |
633785ff MM |
1523 | |
1524 | return ret; | |
1525 | } | |
1526 | ||
f6ac5f3d | 1527 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1528 | |
f6ac5f3d PA |
1529 | void |
1530 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1531 | { |
1532 | struct btrace_insn_iterator *replay; | |
1533 | struct thread_info *tp; | |
1534 | ||
222312d3 | 1535 | tp = find_thread_ptid (regcache->ptid ()); |
1f3ef581 MM |
1536 | gdb_assert (tp != NULL); |
1537 | ||
1538 | replay = tp->btrace.replay; | |
aef92902 | 1539 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1540 | { |
1541 | const struct btrace_insn *insn; | |
1542 | struct gdbarch *gdbarch; | |
1543 | int pcreg; | |
1544 | ||
ac7936df | 1545 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1546 | pcreg = gdbarch_pc_regnum (gdbarch); |
1547 | if (pcreg < 0) | |
1548 | return; | |
1549 | ||
1550 | /* We can only provide the PC register. */ | |
1551 | if (regno >= 0 && regno != pcreg) | |
1552 | return; | |
1553 | ||
1554 | insn = btrace_insn_get (replay); | |
1555 | gdb_assert (insn != NULL); | |
1556 | ||
73e1c03f | 1557 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1558 | } |
1559 | else | |
b6a8c27b | 1560 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1561 | } |
1562 | ||
f6ac5f3d | 1563 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1564 | |
f6ac5f3d PA |
1565 | void |
1566 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1567 | { |
a52eab48 | 1568 | if (!record_btrace_generating_corefile |
222312d3 | 1569 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1570 | error (_("Cannot write registers while replaying.")); |
1f3ef581 MM |
1571 | |
1572 | gdb_assert (may_write_registers != 0); | |
1573 | ||
b6a8c27b | 1574 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1575 | } |
1576 | ||
f6ac5f3d | 1577 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1578 | |
f6ac5f3d PA |
1579 | void |
1580 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1581 | { |
a52eab48 | 1582 | if (!record_btrace_generating_corefile |
222312d3 | 1583 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1584 | return; |
1585 | ||
b6a8c27b | 1586 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1587 | } |
1588 | ||
0b722aec MM |
1589 | /* The branch trace frame cache. */ |
1590 | ||
1591 | struct btrace_frame_cache | |
1592 | { | |
1593 | /* The thread. */ | |
1594 | struct thread_info *tp; | |
1595 | ||
1596 | /* The frame info. */ | |
1597 | struct frame_info *frame; | |
1598 | ||
1599 | /* The branch trace function segment. */ | |
1600 | const struct btrace_function *bfun; | |
1601 | }; | |
1602 | ||
1603 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1604 | ||
1605 | static htab_t bfcache; | |
1606 | ||
1607 | /* hash_f for htab_create_alloc of bfcache. */ | |
1608 | ||
1609 | static hashval_t | |
1610 | bfcache_hash (const void *arg) | |
1611 | { | |
19ba03f4 SM |
1612 | const struct btrace_frame_cache *cache |
1613 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1614 | |
1615 | return htab_hash_pointer (cache->frame); | |
1616 | } | |
1617 | ||
1618 | /* eq_f for htab_create_alloc of bfcache. */ | |
1619 | ||
1620 | static int | |
1621 | bfcache_eq (const void *arg1, const void *arg2) | |
1622 | { | |
19ba03f4 SM |
1623 | const struct btrace_frame_cache *cache1 |
1624 | = (const struct btrace_frame_cache *) arg1; | |
1625 | const struct btrace_frame_cache *cache2 | |
1626 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1627 | |
1628 | return cache1->frame == cache2->frame; | |
1629 | } | |
1630 | ||
1631 | /* Create a new btrace frame cache. */ | |
1632 | ||
1633 | static struct btrace_frame_cache * | |
1634 | bfcache_new (struct frame_info *frame) | |
1635 | { | |
1636 | struct btrace_frame_cache *cache; | |
1637 | void **slot; | |
1638 | ||
1639 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1640 | cache->frame = frame; | |
1641 | ||
1642 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1643 | gdb_assert (*slot == NULL); | |
1644 | *slot = cache; | |
1645 | ||
1646 | return cache; | |
1647 | } | |
1648 | ||
1649 | /* Extract the branch trace function from a branch trace frame. */ | |
1650 | ||
1651 | static const struct btrace_function * | |
1652 | btrace_get_frame_function (struct frame_info *frame) | |
1653 | { | |
1654 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1655 | struct btrace_frame_cache pattern; |
1656 | void **slot; | |
1657 | ||
1658 | pattern.frame = frame; | |
1659 | ||
1660 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1661 | if (slot == NULL) | |
1662 | return NULL; | |
1663 | ||
19ba03f4 | 1664 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1665 | return cache->bfun; |
1666 | } | |
1667 | ||
cecac1ab MM |
1668 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1669 | ||
1670 | static enum unwind_stop_reason | |
1671 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1672 | void **this_cache) | |
1673 | { | |
0b722aec MM |
1674 | const struct btrace_frame_cache *cache; |
1675 | const struct btrace_function *bfun; | |
1676 | ||
19ba03f4 | 1677 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1678 | bfun = cache->bfun; |
1679 | gdb_assert (bfun != NULL); | |
1680 | ||
42bfe59e | 1681 | if (bfun->up == 0) |
0b722aec MM |
1682 | return UNWIND_UNAVAILABLE; |
1683 | ||
1684 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1685 | } |
1686 | ||
1687 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1688 | ||
1689 | static void | |
1690 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1691 | struct frame_id *this_id) | |
1692 | { | |
0b722aec MM |
1693 | const struct btrace_frame_cache *cache; |
1694 | const struct btrace_function *bfun; | |
4aeb0dfc | 1695 | struct btrace_call_iterator it; |
0b722aec MM |
1696 | CORE_ADDR code, special; |
1697 | ||
19ba03f4 | 1698 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1699 | |
1700 | bfun = cache->bfun; | |
1701 | gdb_assert (bfun != NULL); | |
1702 | ||
4aeb0dfc TW |
1703 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1704 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1705 | |
1706 | code = get_frame_func (this_frame); | |
1707 | special = bfun->number; | |
1708 | ||
1709 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1710 | ||
1711 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1712 | btrace_get_bfun_name (cache->bfun), | |
1713 | core_addr_to_string_nz (this_id->code_addr), | |
1714 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1715 | } |
1716 | ||
1717 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1718 | ||
1719 | static struct value * | |
1720 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1721 | void **this_cache, | |
1722 | int regnum) | |
1723 | { | |
0b722aec MM |
1724 | const struct btrace_frame_cache *cache; |
1725 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1726 | struct btrace_call_iterator it; |
0b722aec MM |
1727 | struct gdbarch *gdbarch; |
1728 | CORE_ADDR pc; | |
1729 | int pcreg; | |
1730 | ||
1731 | gdbarch = get_frame_arch (this_frame); | |
1732 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1733 | if (pcreg < 0 || regnum != pcreg) | |
1734 | throw_error (NOT_AVAILABLE_ERROR, | |
1735 | _("Registers are not available in btrace record history")); | |
1736 | ||
19ba03f4 | 1737 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1738 | bfun = cache->bfun; |
1739 | gdb_assert (bfun != NULL); | |
1740 | ||
42bfe59e | 1741 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1742 | throw_error (NOT_AVAILABLE_ERROR, |
1743 | _("No caller in btrace record history")); | |
1744 | ||
42bfe59e TW |
1745 | caller = btrace_call_get (&it); |
1746 | ||
0b722aec | 1747 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1748 | pc = caller->insn.front ().pc; |
0b722aec MM |
1749 | else |
1750 | { | |
0860c437 | 1751 | pc = caller->insn.back ().pc; |
0b722aec MM |
1752 | pc += gdb_insn_length (gdbarch, pc); |
1753 | } | |
1754 | ||
1755 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1756 | btrace_get_bfun_name (bfun), bfun->level, | |
1757 | core_addr_to_string_nz (pc)); | |
1758 | ||
1759 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1760 | } |
1761 | ||
1762 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1763 | ||
1764 | static int | |
1765 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1766 | struct frame_info *this_frame, | |
1767 | void **this_cache) | |
1768 | { | |
0b722aec MM |
1769 | const struct btrace_function *bfun; |
1770 | struct btrace_frame_cache *cache; | |
cecac1ab | 1771 | struct thread_info *tp; |
0b722aec | 1772 | struct frame_info *next; |
cecac1ab MM |
1773 | |
1774 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1775 | tp = inferior_thread (); |
cecac1ab | 1776 | |
0b722aec MM |
1777 | bfun = NULL; |
1778 | next = get_next_frame (this_frame); | |
1779 | if (next == NULL) | |
1780 | { | |
1781 | const struct btrace_insn_iterator *replay; | |
1782 | ||
1783 | replay = tp->btrace.replay; | |
1784 | if (replay != NULL) | |
08c3f6d2 | 1785 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1786 | } |
1787 | else | |
1788 | { | |
1789 | const struct btrace_function *callee; | |
42bfe59e | 1790 | struct btrace_call_iterator it; |
0b722aec MM |
1791 | |
1792 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1793 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1794 | return 0; | |
1795 | ||
1796 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1797 | return 0; | |
1798 | ||
1799 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1800 | } |
1801 | ||
1802 | if (bfun == NULL) | |
1803 | return 0; | |
1804 | ||
1805 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1806 | btrace_get_bfun_name (bfun), bfun->level); | |
1807 | ||
1808 | /* This is our frame. Initialize the frame cache. */ | |
1809 | cache = bfcache_new (this_frame); | |
1810 | cache->tp = tp; | |
1811 | cache->bfun = bfun; | |
1812 | ||
1813 | *this_cache = cache; | |
1814 | return 1; | |
1815 | } | |
1816 | ||
1817 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1818 | ||
1819 | static int | |
1820 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1821 | struct frame_info *this_frame, | |
1822 | void **this_cache) | |
1823 | { | |
1824 | const struct btrace_function *bfun, *callee; | |
1825 | struct btrace_frame_cache *cache; | |
42bfe59e | 1826 | struct btrace_call_iterator it; |
0b722aec | 1827 | struct frame_info *next; |
42bfe59e | 1828 | struct thread_info *tinfo; |
0b722aec MM |
1829 | |
1830 | next = get_next_frame (this_frame); | |
1831 | if (next == NULL) | |
1832 | return 0; | |
1833 | ||
1834 | callee = btrace_get_frame_function (next); | |
1835 | if (callee == NULL) | |
1836 | return 0; | |
1837 | ||
1838 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1839 | return 0; | |
1840 | ||
00431a78 | 1841 | tinfo = inferior_thread (); |
42bfe59e | 1842 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1843 | return 0; |
1844 | ||
42bfe59e TW |
1845 | bfun = btrace_call_get (&it); |
1846 | ||
0b722aec MM |
1847 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1848 | btrace_get_bfun_name (bfun), bfun->level); | |
1849 | ||
1850 | /* This is our frame. Initialize the frame cache. */ | |
1851 | cache = bfcache_new (this_frame); | |
42bfe59e | 1852 | cache->tp = tinfo; |
0b722aec MM |
1853 | cache->bfun = bfun; |
1854 | ||
1855 | *this_cache = cache; | |
1856 | return 1; | |
1857 | } | |
1858 | ||
1859 | static void | |
1860 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1861 | { | |
1862 | struct btrace_frame_cache *cache; | |
1863 | void **slot; | |
1864 | ||
19ba03f4 | 1865 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1866 | |
1867 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1868 | gdb_assert (slot != NULL); | |
1869 | ||
1870 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1871 | } |
1872 | ||
1873 | /* btrace recording does not store previous memory content, neither the stack | |
1874 | frames content. Any unwinding would return errorneous results as the stack | |
1875 | contents no longer matches the changed PC value restored from history. | |
1876 | Therefore this unwinder reports any possibly unwound registers as | |
1877 | <unavailable>. */ | |
1878 | ||
0b722aec | 1879 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1880 | { |
1881 | NORMAL_FRAME, | |
1882 | record_btrace_frame_unwind_stop_reason, | |
1883 | record_btrace_frame_this_id, | |
1884 | record_btrace_frame_prev_register, | |
1885 | NULL, | |
0b722aec MM |
1886 | record_btrace_frame_sniffer, |
1887 | record_btrace_frame_dealloc_cache | |
1888 | }; | |
1889 | ||
1890 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1891 | { | |
1892 | TAILCALL_FRAME, | |
1893 | record_btrace_frame_unwind_stop_reason, | |
1894 | record_btrace_frame_this_id, | |
1895 | record_btrace_frame_prev_register, | |
1896 | NULL, | |
1897 | record_btrace_tailcall_frame_sniffer, | |
1898 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1899 | }; |
b2f4cfde | 1900 | |
f6ac5f3d | 1901 | /* Implement the get_unwinder method. */ |
ac01945b | 1902 | |
f6ac5f3d PA |
1903 | const struct frame_unwind * |
1904 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1905 | { |
1906 | return &record_btrace_frame_unwind; | |
1907 | } | |
1908 | ||
f6ac5f3d | 1909 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1910 | |
f6ac5f3d PA |
1911 | const struct frame_unwind * |
1912 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1913 | { |
1914 | return &record_btrace_tailcall_frame_unwind; | |
1915 | } | |
1916 | ||
987e68b1 MM |
1917 | /* Return a human-readable string for FLAG. */ |
1918 | ||
1919 | static const char * | |
1920 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1921 | { | |
1922 | switch (flag) | |
1923 | { | |
1924 | case BTHR_STEP: | |
1925 | return "step"; | |
1926 | ||
1927 | case BTHR_RSTEP: | |
1928 | return "reverse-step"; | |
1929 | ||
1930 | case BTHR_CONT: | |
1931 | return "cont"; | |
1932 | ||
1933 | case BTHR_RCONT: | |
1934 | return "reverse-cont"; | |
1935 | ||
1936 | case BTHR_STOP: | |
1937 | return "stop"; | |
1938 | } | |
1939 | ||
1940 | return "<invalid>"; | |
1941 | } | |
1942 | ||
52834460 MM |
1943 | /* Indicate that TP should be resumed according to FLAG. */ |
1944 | ||
1945 | static void | |
1946 | record_btrace_resume_thread (struct thread_info *tp, | |
1947 | enum btrace_thread_flag flag) | |
1948 | { | |
1949 | struct btrace_thread_info *btinfo; | |
1950 | ||
43792cf0 | 1951 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 | 1952 | target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag)); |
52834460 MM |
1953 | |
1954 | btinfo = &tp->btrace; | |
1955 | ||
52834460 | 1956 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1957 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1958 | |
0ca912df MM |
1959 | /* A resume request overwrites a preceding resume or stop request. */ |
1960 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1961 | btinfo->flags |= flag; |
1962 | } | |
1963 | ||
ec71cc2f MM |
1964 | /* Get the current frame for TP. */ |
1965 | ||
79b8d3b0 TT |
1966 | static struct frame_id |
1967 | get_thread_current_frame_id (struct thread_info *tp) | |
ec71cc2f | 1968 | { |
79b8d3b0 | 1969 | struct frame_id id; |
ec71cc2f MM |
1970 | int executing; |
1971 | ||
00431a78 PA |
1972 | /* Set current thread, which is implicitly used by |
1973 | get_current_frame. */ | |
1974 | scoped_restore_current_thread restore_thread; | |
1975 | ||
1976 | switch_to_thread (tp); | |
ec71cc2f MM |
1977 | |
1978 | /* Clear the executing flag to allow changes to the current frame. | |
1979 | We are not actually running, yet. We just started a reverse execution | |
1980 | command or a record goto command. | |
1981 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1982 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f MM |
1983 | move the thread. Since we need to recompute the stack, we temporarily |
1984 | set EXECUTING to flase. */ | |
00431a78 PA |
1985 | executing = tp->executing; |
1986 | set_executing (inferior_ptid, false); | |
ec71cc2f | 1987 | |
79b8d3b0 | 1988 | id = null_frame_id; |
ec71cc2f MM |
1989 | TRY |
1990 | { | |
79b8d3b0 | 1991 | id = get_frame_id (get_current_frame ()); |
ec71cc2f MM |
1992 | } |
1993 | CATCH (except, RETURN_MASK_ALL) | |
1994 | { | |
1995 | /* Restore the previous execution state. */ | |
1996 | set_executing (inferior_ptid, executing); | |
1997 | ||
ec71cc2f MM |
1998 | throw_exception (except); |
1999 | } | |
2000 | END_CATCH | |
2001 | ||
2002 | /* Restore the previous execution state. */ | |
2003 | set_executing (inferior_ptid, executing); | |
2004 | ||
79b8d3b0 | 2005 | return id; |
ec71cc2f MM |
2006 | } |
2007 | ||
52834460 MM |
2008 | /* Start replaying a thread. */ |
2009 | ||
2010 | static struct btrace_insn_iterator * | |
2011 | record_btrace_start_replaying (struct thread_info *tp) | |
2012 | { | |
52834460 MM |
2013 | struct btrace_insn_iterator *replay; |
2014 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2015 | |
2016 | btinfo = &tp->btrace; | |
2017 | replay = NULL; | |
2018 | ||
2019 | /* We can't start replaying without trace. */ | |
b54b03bd | 2020 | if (btinfo->functions.empty ()) |
52834460 MM |
2021 | return NULL; |
2022 | ||
52834460 MM |
2023 | /* GDB stores the current frame_id when stepping in order to detects steps |
2024 | into subroutines. | |
2025 | Since frames are computed differently when we're replaying, we need to | |
2026 | recompute those stored frames and fix them up so we can still detect | |
2027 | subroutines after we started replaying. */ | |
492d29ea | 2028 | TRY |
52834460 | 2029 | { |
52834460 MM |
2030 | struct frame_id frame_id; |
2031 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2032 | ||
2033 | /* The current frame without replaying - computed via normal unwind. */ | |
79b8d3b0 | 2034 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2035 | |
2036 | /* Check if we need to update any stepping-related frame id's. */ | |
2037 | upd_step_frame_id = frame_id_eq (frame_id, | |
2038 | tp->control.step_frame_id); | |
2039 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2040 | tp->control.step_stack_frame_id); | |
2041 | ||
2042 | /* We start replaying at the end of the branch trace. This corresponds | |
2043 | to the current instruction. */ | |
8d749320 | 2044 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2045 | btrace_insn_end (replay, btinfo); |
2046 | ||
31fd9caa MM |
2047 | /* Skip gaps at the end of the trace. */ |
2048 | while (btrace_insn_get (replay) == NULL) | |
2049 | { | |
2050 | unsigned int steps; | |
2051 | ||
2052 | steps = btrace_insn_prev (replay, 1); | |
2053 | if (steps == 0) | |
2054 | error (_("No trace.")); | |
2055 | } | |
2056 | ||
52834460 MM |
2057 | /* We're not replaying, yet. */ |
2058 | gdb_assert (btinfo->replay == NULL); | |
2059 | btinfo->replay = replay; | |
2060 | ||
2061 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2062 | registers_changed_thread (tp); |
52834460 MM |
2063 | |
2064 | /* The current frame with replaying - computed via btrace unwind. */ | |
79b8d3b0 | 2065 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2066 | |
2067 | /* Replace stepping related frames where necessary. */ | |
2068 | if (upd_step_frame_id) | |
2069 | tp->control.step_frame_id = frame_id; | |
2070 | if (upd_step_stack_frame_id) | |
2071 | tp->control.step_stack_frame_id = frame_id; | |
2072 | } | |
492d29ea | 2073 | CATCH (except, RETURN_MASK_ALL) |
52834460 MM |
2074 | { |
2075 | xfree (btinfo->replay); | |
2076 | btinfo->replay = NULL; | |
2077 | ||
00431a78 | 2078 | registers_changed_thread (tp); |
52834460 MM |
2079 | |
2080 | throw_exception (except); | |
2081 | } | |
492d29ea | 2082 | END_CATCH |
52834460 MM |
2083 | |
2084 | return replay; | |
2085 | } | |
2086 | ||
2087 | /* Stop replaying a thread. */ | |
2088 | ||
2089 | static void | |
2090 | record_btrace_stop_replaying (struct thread_info *tp) | |
2091 | { | |
2092 | struct btrace_thread_info *btinfo; | |
2093 | ||
2094 | btinfo = &tp->btrace; | |
2095 | ||
2096 | xfree (btinfo->replay); | |
2097 | btinfo->replay = NULL; | |
2098 | ||
2099 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2100 | registers_changed_thread (tp); |
52834460 MM |
2101 | } |
2102 | ||
e3cfc1c7 MM |
2103 | /* Stop replaying TP if it is at the end of its execution history. */ |
2104 | ||
2105 | static void | |
2106 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2107 | { | |
2108 | struct btrace_insn_iterator *replay, end; | |
2109 | struct btrace_thread_info *btinfo; | |
2110 | ||
2111 | btinfo = &tp->btrace; | |
2112 | replay = btinfo->replay; | |
2113 | ||
2114 | if (replay == NULL) | |
2115 | return; | |
2116 | ||
2117 | btrace_insn_end (&end, btinfo); | |
2118 | ||
2119 | if (btrace_insn_cmp (replay, &end) == 0) | |
2120 | record_btrace_stop_replaying (tp); | |
2121 | } | |
2122 | ||
f6ac5f3d | 2123 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2124 | |
f6ac5f3d PA |
2125 | void |
2126 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2127 | { |
d2939ba2 | 2128 | enum btrace_thread_flag flag, cflag; |
52834460 | 2129 | |
987e68b1 | 2130 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid), |
f6ac5f3d | 2131 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2132 | step ? "step" : "cont"); |
52834460 | 2133 | |
0ca912df MM |
2134 | /* Store the execution direction of the last resume. |
2135 | ||
f6ac5f3d | 2136 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2137 | to not change the execution direction in-between. */ |
f6ac5f3d | 2138 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2139 | |
0ca912df | 2140 | /* As long as we're not replaying, just forward the request. |
52834460 | 2141 | |
0ca912df MM |
2142 | For non-stop targets this means that no thread is replaying. In order to |
2143 | make progress, we may need to explicitly move replaying threads to the end | |
2144 | of their execution history. */ | |
f6ac5f3d PA |
2145 | if ((::execution_direction != EXEC_REVERSE) |
2146 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2147 | { |
b6a8c27b | 2148 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2149 | return; |
b2f4cfde MM |
2150 | } |
2151 | ||
52834460 | 2152 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2153 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2154 | { |
2155 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2156 | cflag = BTHR_RCONT; | |
2157 | } | |
52834460 | 2158 | else |
d2939ba2 MM |
2159 | { |
2160 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2161 | cflag = BTHR_CONT; | |
2162 | } | |
52834460 | 2163 | |
52834460 | 2164 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2165 | record_btrace_wait below. |
2166 | ||
2167 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2168 | if (!target_is_non_stop_p ()) | |
2169 | { | |
26a57c92 | 2170 | gdb_assert (inferior_ptid.matches (ptid)); |
d2939ba2 | 2171 | |
08036331 PA |
2172 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2173 | { | |
2174 | if (tp->ptid.matches (inferior_ptid)) | |
2175 | record_btrace_resume_thread (tp, flag); | |
2176 | else | |
2177 | record_btrace_resume_thread (tp, cflag); | |
2178 | } | |
d2939ba2 MM |
2179 | } |
2180 | else | |
2181 | { | |
08036331 PA |
2182 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2183 | record_btrace_resume_thread (tp, flag); | |
d2939ba2 | 2184 | } |
70ad5bff MM |
2185 | |
2186 | /* Async support. */ | |
2187 | if (target_can_async_p ()) | |
2188 | { | |
6a3753b3 | 2189 | target_async (1); |
70ad5bff MM |
2190 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2191 | } | |
52834460 MM |
2192 | } |
2193 | ||
f6ac5f3d | 2194 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2195 | |
f6ac5f3d PA |
2196 | void |
2197 | record_btrace_target::commit_resume () | |
85ad3aaf | 2198 | { |
f6ac5f3d PA |
2199 | if ((::execution_direction != EXEC_REVERSE) |
2200 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2201 | beneath ()->commit_resume (); |
85ad3aaf PA |
2202 | } |
2203 | ||
987e68b1 MM |
2204 | /* Cancel resuming TP. */ |
2205 | ||
2206 | static void | |
2207 | record_btrace_cancel_resume (struct thread_info *tp) | |
2208 | { | |
2209 | enum btrace_thread_flag flags; | |
2210 | ||
2211 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2212 | if (flags == 0) | |
2213 | return; | |
2214 | ||
43792cf0 PA |
2215 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2216 | print_thread_id (tp), | |
987e68b1 MM |
2217 | target_pid_to_str (tp->ptid), flags, |
2218 | btrace_thread_flag_to_str (flags)); | |
2219 | ||
2220 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2221 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2222 | } |
2223 | ||
2224 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2225 | ||
2226 | static struct target_waitstatus | |
2227 | btrace_step_no_history (void) | |
2228 | { | |
2229 | struct target_waitstatus status; | |
2230 | ||
2231 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2232 | ||
2233 | return status; | |
2234 | } | |
2235 | ||
2236 | /* Return a target_waitstatus indicating that a step finished. */ | |
2237 | ||
2238 | static struct target_waitstatus | |
2239 | btrace_step_stopped (void) | |
2240 | { | |
2241 | struct target_waitstatus status; | |
2242 | ||
2243 | status.kind = TARGET_WAITKIND_STOPPED; | |
2244 | status.value.sig = GDB_SIGNAL_TRAP; | |
2245 | ||
2246 | return status; | |
2247 | } | |
2248 | ||
6e4879f0 MM |
2249 | /* Return a target_waitstatus indicating that a thread was stopped as |
2250 | requested. */ | |
2251 | ||
2252 | static struct target_waitstatus | |
2253 | btrace_step_stopped_on_request (void) | |
2254 | { | |
2255 | struct target_waitstatus status; | |
2256 | ||
2257 | status.kind = TARGET_WAITKIND_STOPPED; | |
2258 | status.value.sig = GDB_SIGNAL_0; | |
2259 | ||
2260 | return status; | |
2261 | } | |
2262 | ||
d825d248 MM |
2263 | /* Return a target_waitstatus indicating a spurious stop. */ |
2264 | ||
2265 | static struct target_waitstatus | |
2266 | btrace_step_spurious (void) | |
2267 | { | |
2268 | struct target_waitstatus status; | |
2269 | ||
2270 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2271 | ||
2272 | return status; | |
2273 | } | |
2274 | ||
e3cfc1c7 MM |
2275 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2276 | ||
2277 | static struct target_waitstatus | |
2278 | btrace_step_no_resumed (void) | |
2279 | { | |
2280 | struct target_waitstatus status; | |
2281 | ||
2282 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2283 | ||
2284 | return status; | |
2285 | } | |
2286 | ||
2287 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2288 | ||
2289 | static struct target_waitstatus | |
2290 | btrace_step_again (void) | |
2291 | { | |
2292 | struct target_waitstatus status; | |
2293 | ||
2294 | status.kind = TARGET_WAITKIND_IGNORE; | |
2295 | ||
2296 | return status; | |
2297 | } | |
2298 | ||
52834460 MM |
2299 | /* Clear the record histories. */ |
2300 | ||
2301 | static void | |
2302 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2303 | { | |
2304 | xfree (btinfo->insn_history); | |
2305 | xfree (btinfo->call_history); | |
2306 | ||
2307 | btinfo->insn_history = NULL; | |
2308 | btinfo->call_history = NULL; | |
2309 | } | |
2310 | ||
3c615f99 MM |
2311 | /* Check whether TP's current replay position is at a breakpoint. */ |
2312 | ||
2313 | static int | |
2314 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2315 | { | |
2316 | struct btrace_insn_iterator *replay; | |
2317 | struct btrace_thread_info *btinfo; | |
2318 | const struct btrace_insn *insn; | |
3c615f99 MM |
2319 | |
2320 | btinfo = &tp->btrace; | |
2321 | replay = btinfo->replay; | |
2322 | ||
2323 | if (replay == NULL) | |
2324 | return 0; | |
2325 | ||
2326 | insn = btrace_insn_get (replay); | |
2327 | if (insn == NULL) | |
2328 | return 0; | |
2329 | ||
00431a78 | 2330 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2331 | &btinfo->stop_reason); |
2332 | } | |
2333 | ||
d825d248 | 2334 | /* Step one instruction in forward direction. */ |
52834460 MM |
2335 | |
2336 | static struct target_waitstatus | |
d825d248 | 2337 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2338 | { |
b61ce85c | 2339 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2340 | struct btrace_thread_info *btinfo; |
52834460 | 2341 | |
d825d248 MM |
2342 | btinfo = &tp->btrace; |
2343 | replay = btinfo->replay; | |
2344 | ||
2345 | /* We're done if we're not replaying. */ | |
2346 | if (replay == NULL) | |
2347 | return btrace_step_no_history (); | |
2348 | ||
011c71b6 MM |
2349 | /* Check if we're stepping a breakpoint. */ |
2350 | if (record_btrace_replay_at_breakpoint (tp)) | |
2351 | return btrace_step_stopped (); | |
2352 | ||
b61ce85c MM |
2353 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2354 | jump back to the instruction at which we started. */ | |
2355 | start = *replay; | |
d825d248 MM |
2356 | do |
2357 | { | |
2358 | unsigned int steps; | |
2359 | ||
e3cfc1c7 MM |
2360 | /* We will bail out here if we continue stepping after reaching the end |
2361 | of the execution history. */ | |
d825d248 MM |
2362 | steps = btrace_insn_next (replay, 1); |
2363 | if (steps == 0) | |
b61ce85c MM |
2364 | { |
2365 | *replay = start; | |
2366 | return btrace_step_no_history (); | |
2367 | } | |
d825d248 MM |
2368 | } |
2369 | while (btrace_insn_get (replay) == NULL); | |
2370 | ||
2371 | /* Determine the end of the instruction trace. */ | |
2372 | btrace_insn_end (&end, btinfo); | |
2373 | ||
e3cfc1c7 MM |
2374 | /* The execution trace contains (and ends with) the current instruction. |
2375 | This instruction has not been executed, yet, so the trace really ends | |
2376 | one instruction earlier. */ | |
d825d248 | 2377 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2378 | return btrace_step_no_history (); |
d825d248 MM |
2379 | |
2380 | return btrace_step_spurious (); | |
2381 | } | |
2382 | ||
2383 | /* Step one instruction in backward direction. */ | |
2384 | ||
2385 | static struct target_waitstatus | |
2386 | record_btrace_single_step_backward (struct thread_info *tp) | |
2387 | { | |
b61ce85c | 2388 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2389 | struct btrace_thread_info *btinfo; |
e59fa00f | 2390 | |
52834460 MM |
2391 | btinfo = &tp->btrace; |
2392 | replay = btinfo->replay; | |
2393 | ||
d825d248 MM |
2394 | /* Start replaying if we're not already doing so. */ |
2395 | if (replay == NULL) | |
2396 | replay = record_btrace_start_replaying (tp); | |
2397 | ||
2398 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2399 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2400 | the trace), jump back to the instruction at which we started. */ | |
2401 | start = *replay; | |
d825d248 MM |
2402 | do |
2403 | { | |
2404 | unsigned int steps; | |
2405 | ||
2406 | steps = btrace_insn_prev (replay, 1); | |
2407 | if (steps == 0) | |
b61ce85c MM |
2408 | { |
2409 | *replay = start; | |
2410 | return btrace_step_no_history (); | |
2411 | } | |
d825d248 MM |
2412 | } |
2413 | while (btrace_insn_get (replay) == NULL); | |
2414 | ||
011c71b6 MM |
2415 | /* Check if we're stepping a breakpoint. |
2416 | ||
2417 | For reverse-stepping, this check is after the step. There is logic in | |
2418 | infrun.c that handles reverse-stepping separately. See, for example, | |
2419 | proceed and adjust_pc_after_break. | |
2420 | ||
2421 | This code assumes that for reverse-stepping, PC points to the last | |
2422 | de-executed instruction, whereas for forward-stepping PC points to the | |
2423 | next to-be-executed instruction. */ | |
2424 | if (record_btrace_replay_at_breakpoint (tp)) | |
2425 | return btrace_step_stopped (); | |
2426 | ||
d825d248 MM |
2427 | return btrace_step_spurious (); |
2428 | } | |
2429 | ||
2430 | /* Step a single thread. */ | |
2431 | ||
2432 | static struct target_waitstatus | |
2433 | record_btrace_step_thread (struct thread_info *tp) | |
2434 | { | |
2435 | struct btrace_thread_info *btinfo; | |
2436 | struct target_waitstatus status; | |
2437 | enum btrace_thread_flag flags; | |
2438 | ||
2439 | btinfo = &tp->btrace; | |
2440 | ||
6e4879f0 MM |
2441 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2442 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2443 | |
43792cf0 | 2444 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
987e68b1 MM |
2445 | target_pid_to_str (tp->ptid), flags, |
2446 | btrace_thread_flag_to_str (flags)); | |
52834460 | 2447 | |
6e4879f0 MM |
2448 | /* We can't step without an execution history. */ |
2449 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2450 | return btrace_step_no_history (); | |
2451 | ||
52834460 MM |
2452 | switch (flags) |
2453 | { | |
2454 | default: | |
2455 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2456 | ||
6e4879f0 MM |
2457 | case BTHR_STOP: |
2458 | return btrace_step_stopped_on_request (); | |
2459 | ||
52834460 | 2460 | case BTHR_STEP: |
d825d248 MM |
2461 | status = record_btrace_single_step_forward (tp); |
2462 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2463 | break; |
52834460 MM |
2464 | |
2465 | return btrace_step_stopped (); | |
2466 | ||
2467 | case BTHR_RSTEP: | |
d825d248 MM |
2468 | status = record_btrace_single_step_backward (tp); |
2469 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2470 | break; |
52834460 MM |
2471 | |
2472 | return btrace_step_stopped (); | |
2473 | ||
2474 | case BTHR_CONT: | |
e3cfc1c7 MM |
2475 | status = record_btrace_single_step_forward (tp); |
2476 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2477 | break; | |
52834460 | 2478 | |
e3cfc1c7 MM |
2479 | btinfo->flags |= flags; |
2480 | return btrace_step_again (); | |
52834460 MM |
2481 | |
2482 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2483 | status = record_btrace_single_step_backward (tp); |
2484 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2485 | break; | |
52834460 | 2486 | |
e3cfc1c7 MM |
2487 | btinfo->flags |= flags; |
2488 | return btrace_step_again (); | |
2489 | } | |
d825d248 | 2490 | |
f6ac5f3d | 2491 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2492 | method will stop the thread for whom the event is reported. */ |
2493 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2494 | btinfo->flags |= flags; | |
52834460 | 2495 | |
e3cfc1c7 | 2496 | return status; |
b2f4cfde MM |
2497 | } |
2498 | ||
a6b5be76 MM |
2499 | /* Announce further events if necessary. */ |
2500 | ||
2501 | static void | |
53127008 SM |
2502 | record_btrace_maybe_mark_async_event |
2503 | (const std::vector<thread_info *> &moving, | |
2504 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2505 | { |
53127008 SM |
2506 | bool more_moving = !moving.empty (); |
2507 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2508 | |
2509 | if (!more_moving && !more_no_history) | |
2510 | return; | |
2511 | ||
2512 | if (more_moving) | |
2513 | DEBUG ("movers pending"); | |
2514 | ||
2515 | if (more_no_history) | |
2516 | DEBUG ("no-history pending"); | |
2517 | ||
2518 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2519 | } | |
2520 | ||
f6ac5f3d | 2521 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2522 | |
f6ac5f3d PA |
2523 | ptid_t |
2524 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2525 | int options) | |
b2f4cfde | 2526 | { |
53127008 SM |
2527 | std::vector<thread_info *> moving; |
2528 | std::vector<thread_info *> no_history; | |
52834460 MM |
2529 | |
2530 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid), options); | |
2531 | ||
b2f4cfde | 2532 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2533 | if ((::execution_direction != EXEC_REVERSE) |
2534 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2535 | { |
b6a8c27b | 2536 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2537 | } |
2538 | ||
e3cfc1c7 | 2539 | /* Keep a work list of moving threads. */ |
08036331 PA |
2540 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2541 | if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) | |
2542 | moving.push_back (tp); | |
e3cfc1c7 | 2543 | |
53127008 | 2544 | if (moving.empty ()) |
52834460 | 2545 | { |
e3cfc1c7 | 2546 | *status = btrace_step_no_resumed (); |
52834460 | 2547 | |
e3cfc1c7 | 2548 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid), |
23fdd69e | 2549 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2550 | |
e3cfc1c7 | 2551 | return null_ptid; |
52834460 MM |
2552 | } |
2553 | ||
e3cfc1c7 MM |
2554 | /* Step moving threads one by one, one step each, until either one thread |
2555 | reports an event or we run out of threads to step. | |
2556 | ||
2557 | When stepping more than one thread, chances are that some threads reach | |
2558 | the end of their execution history earlier than others. If we reported | |
2559 | this immediately, all-stop on top of non-stop would stop all threads and | |
2560 | resume the same threads next time. And we would report the same thread | |
2561 | having reached the end of its execution history again. | |
2562 | ||
2563 | In the worst case, this would starve the other threads. But even if other | |
2564 | threads would be allowed to make progress, this would result in far too | |
2565 | many intermediate stops. | |
2566 | ||
2567 | We therefore delay the reporting of "no execution history" until we have | |
2568 | nothing else to report. By this time, all threads should have moved to | |
2569 | either the beginning or the end of their execution history. There will | |
2570 | be a single user-visible stop. */ | |
53127008 SM |
2571 | struct thread_info *eventing = NULL; |
2572 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2573 | { |
53127008 | 2574 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2575 | { |
53127008 SM |
2576 | thread_info *tp = moving[ix]; |
2577 | ||
e3cfc1c7 MM |
2578 | *status = record_btrace_step_thread (tp); |
2579 | ||
2580 | switch (status->kind) | |
2581 | { | |
2582 | case TARGET_WAITKIND_IGNORE: | |
2583 | ix++; | |
2584 | break; | |
2585 | ||
2586 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2587 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2588 | break; |
2589 | ||
2590 | default: | |
53127008 | 2591 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2592 | break; |
2593 | } | |
2594 | } | |
2595 | } | |
2596 | ||
2597 | if (eventing == NULL) | |
2598 | { | |
2599 | /* We started with at least one moving thread. This thread must have | |
2600 | either stopped or reached the end of its execution history. | |
2601 | ||
2602 | In the former case, EVENTING must not be NULL. | |
2603 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2604 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2605 | |
2606 | /* We kept threads moving at the end of their execution history. Stop | |
2607 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2608 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2609 | eventing->btrace.flags &= ~BTHR_MOVE; |
2610 | ||
2611 | *status = btrace_step_no_history (); | |
2612 | } | |
2613 | ||
2614 | gdb_assert (eventing != NULL); | |
2615 | ||
2616 | /* We kept threads replaying at the end of their execution history. Stop | |
2617 | replaying EVENTING now that we are going to report its stop. */ | |
2618 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2619 | |
2620 | /* Stop all other threads. */ | |
5953356c | 2621 | if (!target_is_non_stop_p ()) |
53127008 | 2622 | { |
08036331 | 2623 | for (thread_info *tp : all_non_exited_threads ()) |
53127008 SM |
2624 | record_btrace_cancel_resume (tp); |
2625 | } | |
52834460 | 2626 | |
a6b5be76 MM |
2627 | /* In async mode, we need to announce further events. */ |
2628 | if (target_is_async_p ()) | |
2629 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2630 | ||
52834460 | 2631 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2632 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2633 | |
2634 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2635 | registers_changed_thread (eventing); |
e3cfc1c7 | 2636 | |
43792cf0 PA |
2637 | DEBUG ("wait ended by thread %s (%s): %s", |
2638 | print_thread_id (eventing), | |
e3cfc1c7 | 2639 | target_pid_to_str (eventing->ptid), |
23fdd69e | 2640 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2641 | |
e3cfc1c7 | 2642 | return eventing->ptid; |
52834460 MM |
2643 | } |
2644 | ||
f6ac5f3d | 2645 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2646 | |
f6ac5f3d PA |
2647 | void |
2648 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 MM |
2649 | { |
2650 | DEBUG ("stop %s", target_pid_to_str (ptid)); | |
2651 | ||
2652 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2653 | if ((::execution_direction != EXEC_REVERSE) |
2654 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2655 | { |
b6a8c27b | 2656 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2657 | } |
2658 | else | |
2659 | { | |
08036331 PA |
2660 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2661 | { | |
2662 | tp->btrace.flags &= ~BTHR_MOVE; | |
2663 | tp->btrace.flags |= BTHR_STOP; | |
2664 | } | |
6e4879f0 MM |
2665 | } |
2666 | } | |
2667 | ||
f6ac5f3d | 2668 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2669 | |
57810aa7 | 2670 | bool |
f6ac5f3d | 2671 | record_btrace_target::can_execute_reverse () |
52834460 | 2672 | { |
57810aa7 | 2673 | return true; |
52834460 MM |
2674 | } |
2675 | ||
f6ac5f3d | 2676 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2677 | |
57810aa7 | 2678 | bool |
f6ac5f3d | 2679 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2680 | { |
f6ac5f3d | 2681 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2682 | { |
2683 | struct thread_info *tp = inferior_thread (); | |
2684 | ||
2685 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2686 | } | |
2687 | ||
b6a8c27b | 2688 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2689 | } |
2690 | ||
f6ac5f3d | 2691 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2692 | record-btrace. */ |
2693 | ||
57810aa7 | 2694 | bool |
f6ac5f3d | 2695 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2696 | { |
f6ac5f3d | 2697 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2698 | return true; |
9e8915c6 | 2699 | |
b6a8c27b | 2700 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2701 | } |
2702 | ||
f6ac5f3d | 2703 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2704 | |
57810aa7 | 2705 | bool |
f6ac5f3d | 2706 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2707 | { |
f6ac5f3d | 2708 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2709 | { |
2710 | struct thread_info *tp = inferior_thread (); | |
2711 | ||
2712 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2713 | } | |
2714 | ||
b6a8c27b | 2715 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2716 | } |
2717 | ||
f6ac5f3d | 2718 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2719 | record-btrace. */ |
2720 | ||
57810aa7 | 2721 | bool |
f6ac5f3d | 2722 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2723 | { |
f6ac5f3d | 2724 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2725 | return true; |
52834460 | 2726 | |
b6a8c27b | 2727 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2728 | } |
2729 | ||
f6ac5f3d | 2730 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2731 | |
f6ac5f3d PA |
2732 | void |
2733 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2734 | { |
e8032dde | 2735 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2736 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2737 | return; |
2738 | ||
2739 | /* Forward the request. */ | |
b6a8c27b | 2740 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2741 | } |
2742 | ||
f6ac5f3d | 2743 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2744 | |
57810aa7 | 2745 | bool |
f6ac5f3d | 2746 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2747 | { |
2748 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2749 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2750 | return true; |
e2887aa3 MM |
2751 | |
2752 | /* Forward the request. */ | |
b6a8c27b | 2753 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2754 | } |
2755 | ||
066ce621 MM |
2756 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2757 | is stopped. */ | |
2758 | ||
2759 | static void | |
2760 | record_btrace_set_replay (struct thread_info *tp, | |
2761 | const struct btrace_insn_iterator *it) | |
2762 | { | |
2763 | struct btrace_thread_info *btinfo; | |
2764 | ||
2765 | btinfo = &tp->btrace; | |
2766 | ||
a0f1b963 | 2767 | if (it == NULL) |
52834460 | 2768 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2769 | else |
2770 | { | |
2771 | if (btinfo->replay == NULL) | |
52834460 | 2772 | record_btrace_start_replaying (tp); |
066ce621 MM |
2773 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2774 | return; | |
2775 | ||
2776 | *btinfo->replay = *it; | |
00431a78 | 2777 | registers_changed_thread (tp); |
066ce621 MM |
2778 | } |
2779 | ||
52834460 MM |
2780 | /* Start anew from the new replay position. */ |
2781 | record_btrace_clear_histories (btinfo); | |
485668e5 | 2782 | |
f2ffa92b PA |
2783 | inferior_thread ()->suspend.stop_pc |
2784 | = regcache_read_pc (get_current_regcache ()); | |
485668e5 | 2785 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
066ce621 MM |
2786 | } |
2787 | ||
f6ac5f3d | 2788 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2789 | |
f6ac5f3d PA |
2790 | void |
2791 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2792 | { |
2793 | struct thread_info *tp; | |
2794 | struct btrace_insn_iterator begin; | |
2795 | ||
2796 | tp = require_btrace_thread (); | |
2797 | ||
2798 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2799 | |
2800 | /* Skip gaps at the beginning of the trace. */ | |
2801 | while (btrace_insn_get (&begin) == NULL) | |
2802 | { | |
2803 | unsigned int steps; | |
2804 | ||
2805 | steps = btrace_insn_next (&begin, 1); | |
2806 | if (steps == 0) | |
2807 | error (_("No trace.")); | |
2808 | } | |
2809 | ||
066ce621 | 2810 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2811 | } |
2812 | ||
f6ac5f3d | 2813 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2814 | |
f6ac5f3d PA |
2815 | void |
2816 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2817 | { |
2818 | struct thread_info *tp; | |
2819 | ||
2820 | tp = require_btrace_thread (); | |
2821 | ||
2822 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2823 | } |
2824 | ||
f6ac5f3d | 2825 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2826 | |
f6ac5f3d PA |
2827 | void |
2828 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2829 | { |
2830 | struct thread_info *tp; | |
2831 | struct btrace_insn_iterator it; | |
2832 | unsigned int number; | |
2833 | int found; | |
2834 | ||
2835 | number = insn; | |
2836 | ||
2837 | /* Check for wrap-arounds. */ | |
2838 | if (number != insn) | |
2839 | error (_("Instruction number out of range.")); | |
2840 | ||
2841 | tp = require_btrace_thread (); | |
2842 | ||
2843 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2844 | |
2845 | /* Check if the instruction could not be found or is a gap. */ | |
2846 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2847 | error (_("No such instruction.")); |
2848 | ||
2849 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2850 | } |
2851 | ||
f6ac5f3d | 2852 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2853 | |
f6ac5f3d PA |
2854 | void |
2855 | record_btrace_target::record_stop_replaying () | |
797094dd | 2856 | { |
08036331 | 2857 | for (thread_info *tp : all_non_exited_threads ()) |
797094dd MM |
2858 | record_btrace_stop_replaying (tp); |
2859 | } | |
2860 | ||
f6ac5f3d | 2861 | /* The execution_direction target method. */ |
70ad5bff | 2862 | |
f6ac5f3d PA |
2863 | enum exec_direction_kind |
2864 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2865 | { |
2866 | return record_btrace_resume_exec_dir; | |
2867 | } | |
2868 | ||
f6ac5f3d | 2869 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2870 | |
f6ac5f3d PA |
2871 | void |
2872 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2873 | { |
2874 | record_btrace_generating_corefile = 1; | |
2875 | } | |
2876 | ||
f6ac5f3d | 2877 | /* The done_generating_core target method. */ |
aef92902 | 2878 | |
f6ac5f3d PA |
2879 | void |
2880 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2881 | { |
2882 | record_btrace_generating_corefile = 0; | |
2883 | } | |
2884 | ||
f4abbc16 MM |
2885 | /* Start recording in BTS format. */ |
2886 | ||
2887 | static void | |
cdb34d4a | 2888 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2889 | { |
f4abbc16 MM |
2890 | if (args != NULL && *args != 0) |
2891 | error (_("Invalid argument.")); | |
2892 | ||
2893 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2894 | ||
492d29ea PA |
2895 | TRY |
2896 | { | |
95a6b0a1 | 2897 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2898 | } |
2899 | CATCH (exception, RETURN_MASK_ALL) | |
f4abbc16 MM |
2900 | { |
2901 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2902 | throw_exception (exception); | |
2903 | } | |
492d29ea | 2904 | END_CATCH |
f4abbc16 MM |
2905 | } |
2906 | ||
bc504a31 | 2907 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2908 | |
2909 | static void | |
cdb34d4a | 2910 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2911 | { |
2912 | if (args != NULL && *args != 0) | |
2913 | error (_("Invalid argument.")); | |
2914 | ||
b20a6524 | 2915 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2916 | |
492d29ea PA |
2917 | TRY |
2918 | { | |
95a6b0a1 | 2919 | execute_command ("target record-btrace", from_tty); |
492d29ea PA |
2920 | } |
2921 | CATCH (exception, RETURN_MASK_ALL) | |
2922 | { | |
2923 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
2924 | throw_exception (exception); | |
2925 | } | |
2926 | END_CATCH | |
afedecd3 MM |
2927 | } |
2928 | ||
b20a6524 MM |
2929 | /* Alias for "target record". */ |
2930 | ||
2931 | static void | |
981a3fb3 | 2932 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2933 | { |
2934 | if (args != NULL && *args != 0) | |
2935 | error (_("Invalid argument.")); | |
2936 | ||
2937 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2938 | ||
2939 | TRY | |
2940 | { | |
95a6b0a1 | 2941 | execute_command ("target record-btrace", from_tty); |
b20a6524 MM |
2942 | } |
2943 | CATCH (exception, RETURN_MASK_ALL) | |
2944 | { | |
2945 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2946 | ||
2947 | TRY | |
2948 | { | |
95a6b0a1 | 2949 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2950 | } |
b926417a | 2951 | CATCH (ex, RETURN_MASK_ALL) |
b20a6524 MM |
2952 | { |
2953 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
b926417a | 2954 | throw_exception (ex); |
b20a6524 MM |
2955 | } |
2956 | END_CATCH | |
2957 | } | |
2958 | END_CATCH | |
2959 | } | |
2960 | ||
67b5c0c1 MM |
2961 | /* The "set record btrace" command. */ |
2962 | ||
2963 | static void | |
981a3fb3 | 2964 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2965 | { |
b85310e1 MM |
2966 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2967 | "by an appropriate subcommand.\n")); | |
2968 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
2969 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
2970 | } |
2971 | ||
2972 | /* The "show record btrace" command. */ | |
2973 | ||
2974 | static void | |
981a3fb3 | 2975 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
2976 | { |
2977 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2978 | } | |
2979 | ||
2980 | /* The "show record btrace replay-memory-access" command. */ | |
2981 | ||
2982 | static void | |
2983 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2984 | struct cmd_list_element *c, const char *value) | |
2985 | { | |
2986 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2987 | replay_memory_access); | |
2988 | } | |
2989 | ||
4a4495d6 MM |
2990 | /* The "set record btrace cpu none" command. */ |
2991 | ||
2992 | static void | |
2993 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
2994 | { | |
2995 | if (args != nullptr && *args != 0) | |
2996 | error (_("Trailing junk: '%s'."), args); | |
2997 | ||
2998 | record_btrace_cpu_state = CS_NONE; | |
2999 | } | |
3000 | ||
3001 | /* The "set record btrace cpu auto" command. */ | |
3002 | ||
3003 | static void | |
3004 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3005 | { | |
3006 | if (args != nullptr && *args != 0) | |
3007 | error (_("Trailing junk: '%s'."), args); | |
3008 | ||
3009 | record_btrace_cpu_state = CS_AUTO; | |
3010 | } | |
3011 | ||
3012 | /* The "set record btrace cpu" command. */ | |
3013 | ||
3014 | static void | |
3015 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3016 | { | |
3017 | if (args == nullptr) | |
3018 | args = ""; | |
3019 | ||
3020 | /* We use a hard-coded vendor string for now. */ | |
3021 | unsigned int family, model, stepping; | |
3022 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3023 | &model, &l1, &stepping, &l2); | |
3024 | if (matches == 3) | |
3025 | { | |
3026 | if (strlen (args) != l2) | |
3027 | error (_("Trailing junk: '%s'."), args + l2); | |
3028 | } | |
3029 | else if (matches == 2) | |
3030 | { | |
3031 | if (strlen (args) != l1) | |
3032 | error (_("Trailing junk: '%s'."), args + l1); | |
3033 | ||
3034 | stepping = 0; | |
3035 | } | |
3036 | else | |
3037 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3038 | ||
3039 | if (USHRT_MAX < family) | |
3040 | error (_("Cpu family too big.")); | |
3041 | ||
3042 | if (UCHAR_MAX < model) | |
3043 | error (_("Cpu model too big.")); | |
3044 | ||
3045 | if (UCHAR_MAX < stepping) | |
3046 | error (_("Cpu stepping too big.")); | |
3047 | ||
3048 | record_btrace_cpu.vendor = CV_INTEL; | |
3049 | record_btrace_cpu.family = family; | |
3050 | record_btrace_cpu.model = model; | |
3051 | record_btrace_cpu.stepping = stepping; | |
3052 | ||
3053 | record_btrace_cpu_state = CS_CPU; | |
3054 | } | |
3055 | ||
3056 | /* The "show record btrace cpu" command. */ | |
3057 | ||
3058 | static void | |
3059 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3060 | { | |
4a4495d6 MM |
3061 | if (args != nullptr && *args != 0) |
3062 | error (_("Trailing junk: '%s'."), args); | |
3063 | ||
3064 | switch (record_btrace_cpu_state) | |
3065 | { | |
3066 | case CS_AUTO: | |
3067 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3068 | return; | |
3069 | ||
3070 | case CS_NONE: | |
3071 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3072 | return; | |
3073 | ||
3074 | case CS_CPU: | |
3075 | switch (record_btrace_cpu.vendor) | |
3076 | { | |
3077 | case CV_INTEL: | |
3078 | if (record_btrace_cpu.stepping == 0) | |
3079 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3080 | record_btrace_cpu.family, | |
3081 | record_btrace_cpu.model); | |
3082 | else | |
3083 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3084 | record_btrace_cpu.family, | |
3085 | record_btrace_cpu.model, | |
3086 | record_btrace_cpu.stepping); | |
3087 | return; | |
3088 | } | |
3089 | } | |
3090 | ||
3091 | error (_("Internal error: bad cpu state.")); | |
3092 | } | |
3093 | ||
3094 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3095 | |
3096 | static void | |
981a3fb3 | 3097 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3098 | { |
3099 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3100 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3101 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3102 | all_commands, gdb_stdout); | |
3103 | } | |
3104 | ||
3105 | /* The "show record btrace bts" command. */ | |
3106 | ||
3107 | static void | |
981a3fb3 | 3108 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3109 | { |
3110 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3111 | } | |
3112 | ||
b20a6524 MM |
3113 | /* The "set record btrace pt" command. */ |
3114 | ||
3115 | static void | |
981a3fb3 | 3116 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3117 | { |
3118 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3119 | "by an appropriate subcommand.\n")); | |
3120 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3121 | all_commands, gdb_stdout); | |
3122 | } | |
3123 | ||
3124 | /* The "show record btrace pt" command. */ | |
3125 | ||
3126 | static void | |
981a3fb3 | 3127 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3128 | { |
3129 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3130 | } | |
3131 | ||
3132 | /* The "record bts buffer-size" show value function. */ | |
3133 | ||
3134 | static void | |
3135 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3136 | struct cmd_list_element *c, | |
3137 | const char *value) | |
3138 | { | |
3139 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3140 | value); | |
3141 | } | |
3142 | ||
3143 | /* The "record pt buffer-size" show value function. */ | |
3144 | ||
3145 | static void | |
3146 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3147 | struct cmd_list_element *c, | |
3148 | const char *value) | |
3149 | { | |
3150 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3151 | value); | |
3152 | } | |
3153 | ||
afedecd3 MM |
3154 | /* Initialize btrace commands. */ |
3155 | ||
3156 | void | |
3157 | _initialize_record_btrace (void) | |
3158 | { | |
f4abbc16 MM |
3159 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3160 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3161 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3162 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3163 | ||
f4abbc16 MM |
3164 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3165 | _("\ | |
3166 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3167 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3168 | This format may not be available on all processors."), | |
3169 | &record_btrace_cmdlist); | |
3170 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3171 | ||
b20a6524 MM |
3172 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3173 | _("\ | |
bc504a31 | 3174 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3175 | This format may not be available on all processors."), |
3176 | &record_btrace_cmdlist); | |
3177 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3178 | ||
67b5c0c1 MM |
3179 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
3180 | _("Set record options"), &set_record_btrace_cmdlist, | |
3181 | "set record btrace ", 0, &set_record_cmdlist); | |
3182 | ||
3183 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
3184 | _("Show record options"), &show_record_btrace_cmdlist, | |
3185 | "show record btrace ", 0, &show_record_cmdlist); | |
3186 | ||
3187 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3188 | replay_memory_access_types, &replay_memory_access, _("\ | |
3189 | Set what memory accesses are allowed during replay."), _("\ | |
3190 | Show what memory accesses are allowed during replay."), | |
3191 | _("Default is READ-ONLY.\n\n\ | |
3192 | The btrace record target does not trace data.\n\ | |
3193 | The memory therefore corresponds to the live target and not \ | |
3194 | to the current replay position.\n\n\ | |
3195 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3196 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3197 | replay."), | |
3198 | NULL, cmd_show_replay_memory_access, | |
3199 | &set_record_btrace_cmdlist, | |
3200 | &show_record_btrace_cmdlist); | |
3201 | ||
4a4495d6 MM |
3202 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3203 | _("\ | |
3204 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3205 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3206 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3207 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3208 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3209 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3210 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3211 | When set to \"none\", errata workarounds are disabled."), | |
3212 | &set_record_btrace_cpu_cmdlist, | |
3213 | _("set record btrace cpu "), 1, | |
3214 | &set_record_btrace_cmdlist); | |
3215 | ||
3216 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3217 | Automatically determine the cpu to be used for trace decode."), | |
3218 | &set_record_btrace_cpu_cmdlist); | |
3219 | ||
3220 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3221 | Do not enable errata workarounds for trace decode."), | |
3222 | &set_record_btrace_cpu_cmdlist); | |
3223 | ||
3224 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3225 | Show the cpu to be used for trace decode."), | |
3226 | &show_record_btrace_cmdlist); | |
3227 | ||
d33501a5 MM |
3228 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
3229 | _("Set record btrace bts options"), | |
3230 | &set_record_btrace_bts_cmdlist, | |
3231 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3232 | ||
3233 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
3234 | _("Show record btrace bts options"), | |
3235 | &show_record_btrace_bts_cmdlist, | |
3236 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3237 | ||
3238 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3239 | &record_btrace_conf.bts.size, | |
3240 | _("Set the record/replay bts buffer size."), | |
3241 | _("Show the record/replay bts buffer size."), _("\ | |
3242 | When starting recording request a trace buffer of this size. \ | |
3243 | The actual buffer size may differ from the requested size. \ | |
3244 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3245 | Bigger buffers allow longer recording but also take more time to process \ | |
3246 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3247 | The trace buffer size may not be changed while recording."), NULL, |
3248 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3249 | &set_record_btrace_bts_cmdlist, |
3250 | &show_record_btrace_bts_cmdlist); | |
3251 | ||
b20a6524 MM |
3252 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
3253 | _("Set record btrace pt options"), | |
3254 | &set_record_btrace_pt_cmdlist, | |
3255 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3256 | ||
3257 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
3258 | _("Show record btrace pt options"), | |
3259 | &show_record_btrace_pt_cmdlist, | |
3260 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3261 | ||
3262 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3263 | &record_btrace_conf.pt.size, | |
3264 | _("Set the record/replay pt buffer size."), | |
3265 | _("Show the record/replay pt buffer size."), _("\ | |
3266 | Bigger buffers allow longer recording but also take more time to process \ | |
3267 | the recorded execution.\n\ | |
3268 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3269 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3270 | &set_record_btrace_pt_cmdlist, | |
3271 | &show_record_btrace_pt_cmdlist); | |
3272 | ||
d9f719f1 | 3273 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3274 | |
3275 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3276 | xcalloc, xfree); | |
d33501a5 MM |
3277 | |
3278 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3279 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3280 | } |