Commit | Line | Data |
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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" | |
268a13a5 | 41 | #include "gdbsupport/vec.h" |
00431a78 | 42 | #include "inferior.h" |
325fac50 | 43 | #include <algorithm> |
0d12e84c | 44 | #include "gdbarch.h" |
e43b10e1 | 45 | #include "cli/cli-style.h" |
afedecd3 | 46 | |
d9f719f1 PA |
47 | static const target_info record_btrace_target_info = { |
48 | "record-btrace", | |
49 | N_("Branch tracing target"), | |
50 | N_("Collect control-flow trace and provide the execution history.") | |
51 | }; | |
52 | ||
afedecd3 | 53 | /* The target_ops of record-btrace. */ |
f6ac5f3d PA |
54 | |
55 | class record_btrace_target final : public target_ops | |
56 | { | |
57 | public: | |
d9f719f1 PA |
58 | const target_info &info () const override |
59 | { return record_btrace_target_info; } | |
f6ac5f3d | 60 | |
66b4deae PA |
61 | strata stratum () const override { return record_stratum; } |
62 | ||
f6ac5f3d PA |
63 | void close () override; |
64 | void async (int) override; | |
65 | ||
66 | void detach (inferior *inf, int from_tty) override | |
67 | { record_detach (this, inf, from_tty); } | |
68 | ||
69 | void disconnect (const char *, int) override; | |
70 | ||
71 | void mourn_inferior () override | |
72 | { record_mourn_inferior (this); } | |
73 | ||
74 | void kill () override | |
75 | { record_kill (this); } | |
76 | ||
77 | enum record_method record_method (ptid_t ptid) override; | |
78 | ||
79 | void stop_recording () override; | |
80 | void info_record () override; | |
81 | ||
82 | void insn_history (int size, gdb_disassembly_flags flags) override; | |
83 | void insn_history_from (ULONGEST from, int size, | |
84 | gdb_disassembly_flags flags) override; | |
85 | void insn_history_range (ULONGEST begin, ULONGEST end, | |
86 | gdb_disassembly_flags flags) override; | |
87 | void call_history (int size, record_print_flags flags) override; | |
88 | void call_history_from (ULONGEST begin, int size, record_print_flags flags) | |
89 | override; | |
90 | void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) | |
91 | override; | |
92 | ||
57810aa7 PA |
93 | bool record_is_replaying (ptid_t ptid) override; |
94 | bool record_will_replay (ptid_t ptid, int dir) override; | |
f6ac5f3d PA |
95 | void record_stop_replaying () override; |
96 | ||
97 | enum target_xfer_status xfer_partial (enum target_object object, | |
98 | const char *annex, | |
99 | gdb_byte *readbuf, | |
100 | const gdb_byte *writebuf, | |
101 | ULONGEST offset, ULONGEST len, | |
102 | ULONGEST *xfered_len) override; | |
103 | ||
104 | int insert_breakpoint (struct gdbarch *, | |
105 | struct bp_target_info *) override; | |
106 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
107 | enum remove_bp_reason) override; | |
108 | ||
109 | void fetch_registers (struct regcache *, int) override; | |
110 | ||
111 | void store_registers (struct regcache *, int) override; | |
112 | void prepare_to_store (struct regcache *) override; | |
113 | ||
114 | const struct frame_unwind *get_unwinder () override; | |
115 | ||
116 | const struct frame_unwind *get_tailcall_unwinder () override; | |
117 | ||
118 | void commit_resume () override; | |
119 | void resume (ptid_t, int, enum gdb_signal) override; | |
120 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
121 | ||
122 | void stop (ptid_t) override; | |
123 | void update_thread_list () override; | |
57810aa7 | 124 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
125 | void goto_record_begin () override; |
126 | void goto_record_end () override; | |
127 | void goto_record (ULONGEST insn) override; | |
128 | ||
57810aa7 | 129 | bool can_execute_reverse () override; |
f6ac5f3d | 130 | |
57810aa7 PA |
131 | bool stopped_by_sw_breakpoint () override; |
132 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 133 | |
57810aa7 PA |
134 | bool stopped_by_hw_breakpoint () override; |
135 | bool supports_stopped_by_hw_breakpoint () override; | |
f6ac5f3d PA |
136 | |
137 | enum exec_direction_kind execution_direction () override; | |
138 | void prepare_to_generate_core () override; | |
139 | void done_generating_core () override; | |
140 | }; | |
141 | ||
142 | static record_btrace_target record_btrace_ops; | |
143 | ||
144 | /* Initialize the record-btrace target ops. */ | |
afedecd3 | 145 | |
76727919 TT |
146 | /* Token associated with a new-thread observer enabling branch tracing |
147 | for the new thread. */ | |
3dcfdc58 | 148 | static const gdb::observers::token record_btrace_thread_observer_token {}; |
afedecd3 | 149 | |
67b5c0c1 MM |
150 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
151 | static const char replay_memory_access_read_only[] = "read-only"; | |
152 | static const char replay_memory_access_read_write[] = "read-write"; | |
153 | static const char *const replay_memory_access_types[] = | |
154 | { | |
155 | replay_memory_access_read_only, | |
156 | replay_memory_access_read_write, | |
157 | NULL | |
158 | }; | |
159 | ||
160 | /* The currently allowed replay memory access type. */ | |
161 | static const char *replay_memory_access = replay_memory_access_read_only; | |
162 | ||
4a4495d6 MM |
163 | /* The cpu state kinds. */ |
164 | enum record_btrace_cpu_state_kind | |
165 | { | |
166 | CS_AUTO, | |
167 | CS_NONE, | |
168 | CS_CPU | |
169 | }; | |
170 | ||
171 | /* The current cpu state. */ | |
172 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
173 | ||
174 | /* The current cpu for trace decode. */ | |
175 | static struct btrace_cpu record_btrace_cpu; | |
176 | ||
67b5c0c1 MM |
177 | /* Command lists for "set/show record btrace". */ |
178 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
179 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 180 | |
70ad5bff MM |
181 | /* The execution direction of the last resume we got. See record-full.c. */ |
182 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
183 | ||
184 | /* The async event handler for reverse/replay execution. */ | |
185 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
186 | ||
aef92902 MM |
187 | /* A flag indicating that we are currently generating a core file. */ |
188 | static int record_btrace_generating_corefile; | |
189 | ||
f4abbc16 MM |
190 | /* The current branch trace configuration. */ |
191 | static struct btrace_config record_btrace_conf; | |
192 | ||
193 | /* Command list for "record btrace". */ | |
194 | static struct cmd_list_element *record_btrace_cmdlist; | |
195 | ||
d33501a5 MM |
196 | /* Command lists for "set/show record btrace bts". */ |
197 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
198 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
199 | ||
b20a6524 MM |
200 | /* Command lists for "set/show record btrace pt". */ |
201 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
202 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
203 | ||
4a4495d6 MM |
204 | /* Command list for "set record btrace cpu". */ |
205 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
206 | ||
afedecd3 MM |
207 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
208 | ambiguities when used in if statements. */ | |
209 | ||
210 | #define DEBUG(msg, args...) \ | |
211 | do \ | |
212 | { \ | |
213 | if (record_debug != 0) \ | |
214 | fprintf_unfiltered (gdb_stdlog, \ | |
215 | "[record-btrace] " msg "\n", ##args); \ | |
216 | } \ | |
217 | while (0) | |
218 | ||
219 | ||
4a4495d6 MM |
220 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
221 | configured as auto. */ | |
222 | const struct btrace_cpu * | |
223 | record_btrace_get_cpu (void) | |
224 | { | |
225 | switch (record_btrace_cpu_state) | |
226 | { | |
227 | case CS_AUTO: | |
228 | return nullptr; | |
229 | ||
230 | case CS_NONE: | |
231 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
232 | /* Fall through. */ | |
233 | case CS_CPU: | |
234 | return &record_btrace_cpu; | |
235 | } | |
236 | ||
237 | error (_("Internal error: bad record btrace cpu state.")); | |
238 | } | |
239 | ||
afedecd3 | 240 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 241 | thread_info. |
afedecd3 MM |
242 | |
243 | Throws an error if there is no thread or no trace. This function never | |
244 | returns NULL. */ | |
245 | ||
066ce621 MM |
246 | static struct thread_info * |
247 | require_btrace_thread (void) | |
afedecd3 | 248 | { |
afedecd3 MM |
249 | DEBUG ("require"); |
250 | ||
00431a78 | 251 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
252 | error (_("No thread.")); |
253 | ||
00431a78 PA |
254 | thread_info *tp = inferior_thread (); |
255 | ||
cd4007e4 MM |
256 | validate_registers_access (); |
257 | ||
4a4495d6 | 258 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 259 | |
6e07b1d2 | 260 | if (btrace_is_empty (tp)) |
afedecd3 MM |
261 | error (_("No trace.")); |
262 | ||
066ce621 MM |
263 | return tp; |
264 | } | |
265 | ||
266 | /* Update the branch trace for the current thread and return a pointer to its | |
267 | branch trace information struct. | |
268 | ||
269 | Throws an error if there is no thread or no trace. This function never | |
270 | returns NULL. */ | |
271 | ||
272 | static struct btrace_thread_info * | |
273 | require_btrace (void) | |
274 | { | |
275 | struct thread_info *tp; | |
276 | ||
277 | tp = require_btrace_thread (); | |
278 | ||
279 | return &tp->btrace; | |
afedecd3 MM |
280 | } |
281 | ||
282 | /* Enable branch tracing for one thread. Warn on errors. */ | |
283 | ||
284 | static void | |
285 | record_btrace_enable_warn (struct thread_info *tp) | |
286 | { | |
a70b8144 | 287 | try |
492d29ea PA |
288 | { |
289 | btrace_enable (tp, &record_btrace_conf); | |
290 | } | |
230d2906 | 291 | catch (const gdb_exception_error &error) |
492d29ea | 292 | { |
3d6e9d23 | 293 | warning ("%s", error.what ()); |
492d29ea | 294 | } |
afedecd3 MM |
295 | } |
296 | ||
afedecd3 MM |
297 | /* Enable automatic tracing of new threads. */ |
298 | ||
299 | static void | |
300 | record_btrace_auto_enable (void) | |
301 | { | |
302 | DEBUG ("attach thread observer"); | |
303 | ||
76727919 TT |
304 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
305 | record_btrace_thread_observer_token); | |
afedecd3 MM |
306 | } |
307 | ||
308 | /* Disable automatic tracing of new threads. */ | |
309 | ||
310 | static void | |
311 | record_btrace_auto_disable (void) | |
312 | { | |
afedecd3 MM |
313 | DEBUG ("detach thread observer"); |
314 | ||
76727919 | 315 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
316 | } |
317 | ||
70ad5bff MM |
318 | /* The record-btrace async event handler function. */ |
319 | ||
320 | static void | |
321 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
322 | { | |
323 | inferior_event_handler (INF_REG_EVENT, NULL); | |
324 | } | |
325 | ||
c0272db5 TW |
326 | /* See record-btrace.h. */ |
327 | ||
328 | void | |
329 | record_btrace_push_target (void) | |
330 | { | |
331 | const char *format; | |
332 | ||
333 | record_btrace_auto_enable (); | |
334 | ||
335 | push_target (&record_btrace_ops); | |
336 | ||
337 | record_btrace_async_inferior_event_handler | |
338 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
339 | NULL); | |
340 | record_btrace_generating_corefile = 0; | |
341 | ||
342 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 343 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
344 | } |
345 | ||
228f1508 SM |
346 | /* Disable btrace on a set of threads on scope exit. */ |
347 | ||
348 | struct scoped_btrace_disable | |
349 | { | |
350 | scoped_btrace_disable () = default; | |
351 | ||
352 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
353 | ||
354 | ~scoped_btrace_disable () | |
355 | { | |
356 | for (thread_info *tp : m_threads) | |
357 | btrace_disable (tp); | |
358 | } | |
359 | ||
360 | void add_thread (thread_info *thread) | |
361 | { | |
362 | m_threads.push_front (thread); | |
363 | } | |
364 | ||
365 | void discard () | |
366 | { | |
367 | m_threads.clear (); | |
368 | } | |
369 | ||
370 | private: | |
371 | std::forward_list<thread_info *> m_threads; | |
372 | }; | |
373 | ||
d9f719f1 | 374 | /* Open target record-btrace. */ |
afedecd3 | 375 | |
d9f719f1 PA |
376 | static void |
377 | record_btrace_target_open (const char *args, int from_tty) | |
afedecd3 | 378 | { |
228f1508 SM |
379 | /* If we fail to enable btrace for one thread, disable it for the threads for |
380 | which it was successfully enabled. */ | |
381 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
382 | |
383 | DEBUG ("open"); | |
384 | ||
8213266a | 385 | record_preopen (); |
afedecd3 MM |
386 | |
387 | if (!target_has_execution) | |
388 | error (_("The program is not being run.")); | |
389 | ||
08036331 | 390 | for (thread_info *tp : all_non_exited_threads ()) |
5d5658a1 | 391 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 392 | { |
f4abbc16 | 393 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 394 | |
228f1508 | 395 | btrace_disable.add_thread (tp); |
afedecd3 MM |
396 | } |
397 | ||
c0272db5 | 398 | record_btrace_push_target (); |
afedecd3 | 399 | |
228f1508 | 400 | btrace_disable.discard (); |
afedecd3 MM |
401 | } |
402 | ||
f6ac5f3d | 403 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 404 | |
f6ac5f3d PA |
405 | void |
406 | record_btrace_target::stop_recording () | |
afedecd3 | 407 | { |
afedecd3 MM |
408 | DEBUG ("stop recording"); |
409 | ||
410 | record_btrace_auto_disable (); | |
411 | ||
08036331 | 412 | for (thread_info *tp : all_non_exited_threads ()) |
afedecd3 MM |
413 | if (tp->btrace.target != NULL) |
414 | btrace_disable (tp); | |
415 | } | |
416 | ||
f6ac5f3d | 417 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 418 | |
f6ac5f3d PA |
419 | void |
420 | record_btrace_target::disconnect (const char *args, | |
421 | int from_tty) | |
c0272db5 | 422 | { |
b6a8c27b | 423 | struct target_ops *beneath = this->beneath (); |
c0272db5 TW |
424 | |
425 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 426 | unpush_target (this); |
c0272db5 TW |
427 | |
428 | /* Forward disconnect. */ | |
f6ac5f3d | 429 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
430 | } |
431 | ||
f6ac5f3d | 432 | /* The close method of target record-btrace. */ |
afedecd3 | 433 | |
f6ac5f3d PA |
434 | void |
435 | record_btrace_target::close () | |
afedecd3 | 436 | { |
70ad5bff MM |
437 | if (record_btrace_async_inferior_event_handler != NULL) |
438 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
439 | ||
99c819ee MM |
440 | /* Make sure automatic recording gets disabled even if we did not stop |
441 | recording before closing the record-btrace target. */ | |
442 | record_btrace_auto_disable (); | |
443 | ||
568e808b MM |
444 | /* We should have already stopped recording. |
445 | Tear down btrace in case we have not. */ | |
08036331 | 446 | for (thread_info *tp : all_non_exited_threads ()) |
568e808b | 447 | btrace_teardown (tp); |
afedecd3 MM |
448 | } |
449 | ||
f6ac5f3d | 450 | /* The async method of target record-btrace. */ |
b7d2e916 | 451 | |
f6ac5f3d PA |
452 | void |
453 | record_btrace_target::async (int enable) | |
b7d2e916 | 454 | { |
6a3753b3 | 455 | if (enable) |
b7d2e916 PA |
456 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
457 | else | |
458 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
459 | ||
b6a8c27b | 460 | this->beneath ()->async (enable); |
b7d2e916 PA |
461 | } |
462 | ||
d33501a5 MM |
463 | /* Adjusts the size and returns a human readable size suffix. */ |
464 | ||
465 | static const char * | |
466 | record_btrace_adjust_size (unsigned int *size) | |
467 | { | |
468 | unsigned int sz; | |
469 | ||
470 | sz = *size; | |
471 | ||
472 | if ((sz & ((1u << 30) - 1)) == 0) | |
473 | { | |
474 | *size = sz >> 30; | |
475 | return "GB"; | |
476 | } | |
477 | else if ((sz & ((1u << 20) - 1)) == 0) | |
478 | { | |
479 | *size = sz >> 20; | |
480 | return "MB"; | |
481 | } | |
482 | else if ((sz & ((1u << 10) - 1)) == 0) | |
483 | { | |
484 | *size = sz >> 10; | |
485 | return "kB"; | |
486 | } | |
487 | else | |
488 | return ""; | |
489 | } | |
490 | ||
491 | /* Print a BTS configuration. */ | |
492 | ||
493 | static void | |
494 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
495 | { | |
496 | const char *suffix; | |
497 | unsigned int size; | |
498 | ||
499 | size = conf->size; | |
500 | if (size > 0) | |
501 | { | |
502 | suffix = record_btrace_adjust_size (&size); | |
503 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
504 | } | |
505 | } | |
506 | ||
bc504a31 | 507 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
508 | |
509 | static void | |
510 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
511 | { | |
512 | const char *suffix; | |
513 | unsigned int size; | |
514 | ||
515 | size = conf->size; | |
516 | if (size > 0) | |
517 | { | |
518 | suffix = record_btrace_adjust_size (&size); | |
519 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
520 | } | |
521 | } | |
522 | ||
d33501a5 MM |
523 | /* Print a branch tracing configuration. */ |
524 | ||
525 | static void | |
526 | record_btrace_print_conf (const struct btrace_config *conf) | |
527 | { | |
528 | printf_unfiltered (_("Recording format: %s.\n"), | |
529 | btrace_format_string (conf->format)); | |
530 | ||
531 | switch (conf->format) | |
532 | { | |
533 | case BTRACE_FORMAT_NONE: | |
534 | return; | |
535 | ||
536 | case BTRACE_FORMAT_BTS: | |
537 | record_btrace_print_bts_conf (&conf->bts); | |
538 | return; | |
b20a6524 MM |
539 | |
540 | case BTRACE_FORMAT_PT: | |
541 | record_btrace_print_pt_conf (&conf->pt); | |
542 | return; | |
d33501a5 MM |
543 | } |
544 | ||
545 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
546 | } | |
547 | ||
f6ac5f3d | 548 | /* The info_record method of target record-btrace. */ |
afedecd3 | 549 | |
f6ac5f3d PA |
550 | void |
551 | record_btrace_target::info_record () | |
afedecd3 MM |
552 | { |
553 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 554 | const struct btrace_config *conf; |
afedecd3 | 555 | struct thread_info *tp; |
31fd9caa | 556 | unsigned int insns, calls, gaps; |
afedecd3 MM |
557 | |
558 | DEBUG ("info"); | |
559 | ||
560 | tp = find_thread_ptid (inferior_ptid); | |
561 | if (tp == NULL) | |
562 | error (_("No thread.")); | |
563 | ||
cd4007e4 MM |
564 | validate_registers_access (); |
565 | ||
f4abbc16 MM |
566 | btinfo = &tp->btrace; |
567 | ||
f6ac5f3d | 568 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 569 | if (conf != NULL) |
d33501a5 | 570 | record_btrace_print_conf (conf); |
f4abbc16 | 571 | |
4a4495d6 | 572 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 573 | |
23a7fe75 MM |
574 | insns = 0; |
575 | calls = 0; | |
31fd9caa | 576 | gaps = 0; |
23a7fe75 | 577 | |
6e07b1d2 | 578 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
579 | { |
580 | struct btrace_call_iterator call; | |
581 | struct btrace_insn_iterator insn; | |
582 | ||
583 | btrace_call_end (&call, btinfo); | |
584 | btrace_call_prev (&call, 1); | |
5de9129b | 585 | calls = btrace_call_number (&call); |
23a7fe75 MM |
586 | |
587 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 588 | insns = btrace_insn_number (&insn); |
31fd9caa | 589 | |
69090cee TW |
590 | /* If the last instruction is not a gap, it is the current instruction |
591 | that is not actually part of the record. */ | |
592 | if (btrace_insn_get (&insn) != NULL) | |
593 | insns -= 1; | |
31fd9caa MM |
594 | |
595 | gaps = btinfo->ngaps; | |
23a7fe75 | 596 | } |
afedecd3 | 597 | |
31fd9caa | 598 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 | 599 | "for thread %s (%s).\n"), insns, calls, gaps, |
a068643d TT |
600 | print_thread_id (tp), |
601 | target_pid_to_str (tp->ptid).c_str ()); | |
07bbe694 MM |
602 | |
603 | if (btrace_is_replaying (tp)) | |
604 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
605 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
606 | } |
607 | ||
31fd9caa MM |
608 | /* Print a decode error. */ |
609 | ||
610 | static void | |
611 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
612 | enum btrace_format format) | |
613 | { | |
508352a9 | 614 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 615 | |
112e8700 | 616 | uiout->text (_("[")); |
508352a9 TW |
617 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
618 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 619 | { |
112e8700 | 620 | uiout->text (_("decode error (")); |
381befee | 621 | uiout->field_signed ("errcode", errcode); |
112e8700 | 622 | uiout->text (_("): ")); |
31fd9caa | 623 | } |
112e8700 SM |
624 | uiout->text (errstr); |
625 | uiout->text (_("]\n")); | |
31fd9caa MM |
626 | } |
627 | ||
f94cc897 MM |
628 | /* A range of source lines. */ |
629 | ||
630 | struct btrace_line_range | |
631 | { | |
632 | /* The symtab this line is from. */ | |
633 | struct symtab *symtab; | |
634 | ||
635 | /* The first line (inclusive). */ | |
636 | int begin; | |
637 | ||
638 | /* The last line (exclusive). */ | |
639 | int end; | |
640 | }; | |
641 | ||
642 | /* Construct a line range. */ | |
643 | ||
644 | static struct btrace_line_range | |
645 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
646 | { | |
647 | struct btrace_line_range range; | |
648 | ||
649 | range.symtab = symtab; | |
650 | range.begin = begin; | |
651 | range.end = end; | |
652 | ||
653 | return range; | |
654 | } | |
655 | ||
656 | /* Add a line to a line range. */ | |
657 | ||
658 | static struct btrace_line_range | |
659 | btrace_line_range_add (struct btrace_line_range range, int line) | |
660 | { | |
661 | if (range.end <= range.begin) | |
662 | { | |
663 | /* This is the first entry. */ | |
664 | range.begin = line; | |
665 | range.end = line + 1; | |
666 | } | |
667 | else if (line < range.begin) | |
668 | range.begin = line; | |
669 | else if (range.end < line) | |
670 | range.end = line; | |
671 | ||
672 | return range; | |
673 | } | |
674 | ||
675 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
676 | ||
677 | static int | |
678 | btrace_line_range_is_empty (struct btrace_line_range range) | |
679 | { | |
680 | return range.end <= range.begin; | |
681 | } | |
682 | ||
683 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
684 | ||
685 | static int | |
686 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
687 | struct btrace_line_range rhs) | |
688 | { | |
689 | return ((lhs.symtab == rhs.symtab) | |
690 | && (lhs.begin <= rhs.begin) | |
691 | && (rhs.end <= lhs.end)); | |
692 | } | |
693 | ||
694 | /* Find the line range associated with PC. */ | |
695 | ||
696 | static struct btrace_line_range | |
697 | btrace_find_line_range (CORE_ADDR pc) | |
698 | { | |
699 | struct btrace_line_range range; | |
700 | struct linetable_entry *lines; | |
701 | struct linetable *ltable; | |
702 | struct symtab *symtab; | |
703 | int nlines, i; | |
704 | ||
705 | symtab = find_pc_line_symtab (pc); | |
706 | if (symtab == NULL) | |
707 | return btrace_mk_line_range (NULL, 0, 0); | |
708 | ||
709 | ltable = SYMTAB_LINETABLE (symtab); | |
710 | if (ltable == NULL) | |
711 | return btrace_mk_line_range (symtab, 0, 0); | |
712 | ||
713 | nlines = ltable->nitems; | |
714 | lines = ltable->item; | |
715 | if (nlines <= 0) | |
716 | return btrace_mk_line_range (symtab, 0, 0); | |
717 | ||
718 | range = btrace_mk_line_range (symtab, 0, 0); | |
719 | for (i = 0; i < nlines - 1; i++) | |
720 | { | |
721 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
722 | range = btrace_line_range_add (range, lines[i].line); | |
723 | } | |
724 | ||
725 | return range; | |
726 | } | |
727 | ||
728 | /* Print source lines in LINES to UIOUT. | |
729 | ||
730 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
731 | instructions corresponding to that source line. When printing a new source | |
732 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
733 | the new source line. If the source line range in LINES is not empty, this | |
734 | function will leave the cleanup chain for the last printed source line open | |
735 | so instructions can be added to it. */ | |
736 | ||
737 | static void | |
738 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
739 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
740 | gdb::optional<ui_out_emit_list> *asm_list, | |
741 | gdb_disassembly_flags flags) | |
f94cc897 | 742 | { |
8d297bbf | 743 | print_source_lines_flags psl_flags; |
f94cc897 | 744 | |
f94cc897 MM |
745 | if (flags & DISASSEMBLY_FILENAME) |
746 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
747 | ||
7ea78b59 | 748 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 749 | { |
7ea78b59 | 750 | asm_list->reset (); |
f94cc897 | 751 | |
7ea78b59 | 752 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
753 | |
754 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
755 | ||
7ea78b59 | 756 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
757 | } |
758 | } | |
759 | ||
afedecd3 MM |
760 | /* Disassemble a section of the recorded instruction trace. */ |
761 | ||
762 | static void | |
23a7fe75 | 763 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 764 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 765 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
766 | const struct btrace_insn_iterator *end, |
767 | gdb_disassembly_flags flags) | |
afedecd3 | 768 | { |
9a24775b PA |
769 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
770 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 771 | |
f94cc897 MM |
772 | flags |= DISASSEMBLY_SPECULATIVE; |
773 | ||
7ea78b59 SM |
774 | struct gdbarch *gdbarch = target_gdbarch (); |
775 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 776 | |
7ea78b59 | 777 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 778 | |
7ea78b59 SM |
779 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
780 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 781 | |
046bebe1 | 782 | gdb_pretty_print_disassembler disasm (gdbarch, uiout); |
8b172ce7 | 783 | |
7ea78b59 SM |
784 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
785 | btrace_insn_next (&it, 1)) | |
afedecd3 | 786 | { |
23a7fe75 MM |
787 | const struct btrace_insn *insn; |
788 | ||
789 | insn = btrace_insn_get (&it); | |
790 | ||
31fd9caa MM |
791 | /* A NULL instruction indicates a gap in the trace. */ |
792 | if (insn == NULL) | |
793 | { | |
794 | const struct btrace_config *conf; | |
795 | ||
796 | conf = btrace_conf (btinfo); | |
afedecd3 | 797 | |
31fd9caa MM |
798 | /* We have trace so we must have a configuration. */ |
799 | gdb_assert (conf != NULL); | |
800 | ||
69090cee TW |
801 | uiout->field_fmt ("insn-number", "%u", |
802 | btrace_insn_number (&it)); | |
803 | uiout->text ("\t"); | |
804 | ||
805 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
806 | conf->format); |
807 | } | |
808 | else | |
809 | { | |
f94cc897 | 810 | struct disasm_insn dinsn; |
da8c46d2 | 811 | |
f94cc897 | 812 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 813 | { |
f94cc897 MM |
814 | struct btrace_line_range lines; |
815 | ||
816 | lines = btrace_find_line_range (insn->pc); | |
817 | if (!btrace_line_range_is_empty (lines) | |
818 | && !btrace_line_range_contains_range (last_lines, lines)) | |
819 | { | |
7ea78b59 SM |
820 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
821 | flags); | |
f94cc897 MM |
822 | last_lines = lines; |
823 | } | |
7ea78b59 | 824 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 825 | { |
7ea78b59 SM |
826 | gdb_assert (!asm_list.has_value ()); |
827 | ||
828 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
829 | ||
f94cc897 | 830 | /* No source information. */ |
7ea78b59 | 831 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
832 | } |
833 | ||
7ea78b59 SM |
834 | gdb_assert (src_and_asm_tuple.has_value ()); |
835 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 836 | } |
da8c46d2 | 837 | |
f94cc897 MM |
838 | memset (&dinsn, 0, sizeof (dinsn)); |
839 | dinsn.number = btrace_insn_number (&it); | |
840 | dinsn.addr = insn->pc; | |
31fd9caa | 841 | |
da8c46d2 | 842 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 843 | dinsn.is_speculative = 1; |
da8c46d2 | 844 | |
046bebe1 | 845 | disasm.pretty_print_insn (&dinsn, flags); |
31fd9caa | 846 | } |
afedecd3 MM |
847 | } |
848 | } | |
849 | ||
f6ac5f3d | 850 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 851 | |
f6ac5f3d PA |
852 | void |
853 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
854 | { |
855 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
856 | struct btrace_insn_history *history; |
857 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 858 | struct ui_out *uiout; |
23a7fe75 | 859 | unsigned int context, covered; |
afedecd3 MM |
860 | |
861 | uiout = current_uiout; | |
2e783024 | 862 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 863 | context = abs (size); |
afedecd3 MM |
864 | if (context == 0) |
865 | error (_("Bad record instruction-history-size.")); | |
866 | ||
23a7fe75 MM |
867 | btinfo = require_btrace (); |
868 | history = btinfo->insn_history; | |
869 | if (history == NULL) | |
afedecd3 | 870 | { |
07bbe694 | 871 | struct btrace_insn_iterator *replay; |
afedecd3 | 872 | |
9a24775b | 873 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 874 | |
07bbe694 MM |
875 | /* If we're replaying, we start at the replay position. Otherwise, we |
876 | start at the tail of the trace. */ | |
877 | replay = btinfo->replay; | |
878 | if (replay != NULL) | |
879 | begin = *replay; | |
880 | else | |
881 | btrace_insn_end (&begin, btinfo); | |
882 | ||
883 | /* We start from here and expand in the requested direction. Then we | |
884 | expand in the other direction, as well, to fill up any remaining | |
885 | context. */ | |
886 | end = begin; | |
887 | if (size < 0) | |
888 | { | |
889 | /* We want the current position covered, as well. */ | |
890 | covered = btrace_insn_next (&end, 1); | |
891 | covered += btrace_insn_prev (&begin, context - covered); | |
892 | covered += btrace_insn_next (&end, context - covered); | |
893 | } | |
894 | else | |
895 | { | |
896 | covered = btrace_insn_next (&end, context); | |
897 | covered += btrace_insn_prev (&begin, context - covered); | |
898 | } | |
afedecd3 MM |
899 | } |
900 | else | |
901 | { | |
23a7fe75 MM |
902 | begin = history->begin; |
903 | end = history->end; | |
afedecd3 | 904 | |
9a24775b | 905 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 906 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 907 | |
23a7fe75 MM |
908 | if (size < 0) |
909 | { | |
910 | end = begin; | |
911 | covered = btrace_insn_prev (&begin, context); | |
912 | } | |
913 | else | |
914 | { | |
915 | begin = end; | |
916 | covered = btrace_insn_next (&end, context); | |
917 | } | |
afedecd3 MM |
918 | } |
919 | ||
23a7fe75 | 920 | if (covered > 0) |
31fd9caa | 921 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
922 | else |
923 | { | |
924 | if (size < 0) | |
925 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
926 | else | |
927 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
928 | } | |
afedecd3 | 929 | |
23a7fe75 | 930 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
931 | } |
932 | ||
f6ac5f3d | 933 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 934 | |
f6ac5f3d PA |
935 | void |
936 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
937 | gdb_disassembly_flags flags) | |
afedecd3 MM |
938 | { |
939 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 940 | struct btrace_insn_iterator begin, end; |
afedecd3 | 941 | struct ui_out *uiout; |
23a7fe75 MM |
942 | unsigned int low, high; |
943 | int found; | |
afedecd3 MM |
944 | |
945 | uiout = current_uiout; | |
2e783024 | 946 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
947 | low = from; |
948 | high = to; | |
afedecd3 | 949 | |
9a24775b | 950 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
951 | |
952 | /* Check for wrap-arounds. */ | |
23a7fe75 | 953 | if (low != from || high != to) |
afedecd3 MM |
954 | error (_("Bad range.")); |
955 | ||
0688d04e | 956 | if (high < low) |
afedecd3 MM |
957 | error (_("Bad range.")); |
958 | ||
23a7fe75 | 959 | btinfo = require_btrace (); |
afedecd3 | 960 | |
23a7fe75 MM |
961 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
962 | if (found == 0) | |
963 | error (_("Range out of bounds.")); | |
afedecd3 | 964 | |
23a7fe75 MM |
965 | found = btrace_find_insn_by_number (&end, btinfo, high); |
966 | if (found == 0) | |
0688d04e MM |
967 | { |
968 | /* Silently truncate the range. */ | |
969 | btrace_insn_end (&end, btinfo); | |
970 | } | |
971 | else | |
972 | { | |
973 | /* We want both begin and end to be inclusive. */ | |
974 | btrace_insn_next (&end, 1); | |
975 | } | |
afedecd3 | 976 | |
31fd9caa | 977 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 978 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
979 | } |
980 | ||
f6ac5f3d | 981 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 982 | |
f6ac5f3d PA |
983 | void |
984 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
985 | gdb_disassembly_flags flags) | |
afedecd3 MM |
986 | { |
987 | ULONGEST begin, end, context; | |
988 | ||
989 | context = abs (size); | |
0688d04e MM |
990 | if (context == 0) |
991 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
992 | |
993 | if (size < 0) | |
994 | { | |
995 | end = from; | |
996 | ||
997 | if (from < context) | |
998 | begin = 0; | |
999 | else | |
0688d04e | 1000 | begin = from - context + 1; |
afedecd3 MM |
1001 | } |
1002 | else | |
1003 | { | |
1004 | begin = from; | |
0688d04e | 1005 | end = from + context - 1; |
afedecd3 MM |
1006 | |
1007 | /* Check for wrap-around. */ | |
1008 | if (end < begin) | |
1009 | end = ULONGEST_MAX; | |
1010 | } | |
1011 | ||
f6ac5f3d | 1012 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1013 | } |
1014 | ||
1015 | /* Print the instruction number range for a function call history line. */ | |
1016 | ||
1017 | static void | |
23a7fe75 MM |
1018 | btrace_call_history_insn_range (struct ui_out *uiout, |
1019 | const struct btrace_function *bfun) | |
afedecd3 | 1020 | { |
7acbe133 MM |
1021 | unsigned int begin, end, size; |
1022 | ||
0860c437 | 1023 | size = bfun->insn.size (); |
7acbe133 | 1024 | gdb_assert (size > 0); |
afedecd3 | 1025 | |
23a7fe75 | 1026 | begin = bfun->insn_offset; |
7acbe133 | 1027 | end = begin + size - 1; |
afedecd3 | 1028 | |
1f77b012 | 1029 | uiout->field_unsigned ("insn begin", begin); |
112e8700 | 1030 | uiout->text (","); |
1f77b012 | 1031 | uiout->field_unsigned ("insn end", end); |
afedecd3 MM |
1032 | } |
1033 | ||
ce0dfbea MM |
1034 | /* Compute the lowest and highest source line for the instructions in BFUN |
1035 | and return them in PBEGIN and PEND. | |
1036 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1037 | result from inlining or macro expansion. */ | |
1038 | ||
1039 | static void | |
1040 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1041 | int *pbegin, int *pend) | |
1042 | { | |
ce0dfbea MM |
1043 | struct symtab *symtab; |
1044 | struct symbol *sym; | |
ce0dfbea MM |
1045 | int begin, end; |
1046 | ||
1047 | begin = INT_MAX; | |
1048 | end = INT_MIN; | |
1049 | ||
1050 | sym = bfun->sym; | |
1051 | if (sym == NULL) | |
1052 | goto out; | |
1053 | ||
1054 | symtab = symbol_symtab (sym); | |
1055 | ||
0860c437 | 1056 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1057 | { |
1058 | struct symtab_and_line sal; | |
1059 | ||
0860c437 | 1060 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1061 | if (sal.symtab != symtab || sal.line == 0) |
1062 | continue; | |
1063 | ||
325fac50 PA |
1064 | begin = std::min (begin, sal.line); |
1065 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1066 | } |
1067 | ||
1068 | out: | |
1069 | *pbegin = begin; | |
1070 | *pend = end; | |
1071 | } | |
1072 | ||
afedecd3 MM |
1073 | /* Print the source line information for a function call history line. */ |
1074 | ||
1075 | static void | |
23a7fe75 MM |
1076 | btrace_call_history_src_line (struct ui_out *uiout, |
1077 | const struct btrace_function *bfun) | |
afedecd3 MM |
1078 | { |
1079 | struct symbol *sym; | |
23a7fe75 | 1080 | int begin, end; |
afedecd3 MM |
1081 | |
1082 | sym = bfun->sym; | |
1083 | if (sym == NULL) | |
1084 | return; | |
1085 | ||
112e8700 | 1086 | uiout->field_string ("file", |
cbe56571 | 1087 | symtab_to_filename_for_display (symbol_symtab (sym)), |
e43b10e1 | 1088 | file_name_style.style ()); |
afedecd3 | 1089 | |
ce0dfbea | 1090 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1091 | if (end < begin) |
afedecd3 MM |
1092 | return; |
1093 | ||
112e8700 | 1094 | uiout->text (":"); |
381befee | 1095 | uiout->field_signed ("min line", begin); |
afedecd3 | 1096 | |
23a7fe75 | 1097 | if (end == begin) |
afedecd3 MM |
1098 | return; |
1099 | ||
112e8700 | 1100 | uiout->text (","); |
381befee | 1101 | uiout->field_signed ("max line", end); |
afedecd3 MM |
1102 | } |
1103 | ||
0b722aec MM |
1104 | /* Get the name of a branch trace function. */ |
1105 | ||
1106 | static const char * | |
1107 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1108 | { | |
1109 | struct minimal_symbol *msym; | |
1110 | struct symbol *sym; | |
1111 | ||
1112 | if (bfun == NULL) | |
1113 | return "??"; | |
1114 | ||
1115 | msym = bfun->msym; | |
1116 | sym = bfun->sym; | |
1117 | ||
1118 | if (sym != NULL) | |
1119 | return SYMBOL_PRINT_NAME (sym); | |
1120 | else if (msym != NULL) | |
efd66ac6 | 1121 | return MSYMBOL_PRINT_NAME (msym); |
0b722aec MM |
1122 | else |
1123 | return "??"; | |
1124 | } | |
1125 | ||
afedecd3 MM |
1126 | /* Disassemble a section of the recorded function trace. */ |
1127 | ||
1128 | static void | |
23a7fe75 | 1129 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1130 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1131 | const struct btrace_call_iterator *begin, |
1132 | const struct btrace_call_iterator *end, | |
8d297bbf | 1133 | int int_flags) |
afedecd3 | 1134 | { |
23a7fe75 | 1135 | struct btrace_call_iterator it; |
8d297bbf | 1136 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1137 | |
8d297bbf | 1138 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1139 | btrace_call_number (end)); |
afedecd3 | 1140 | |
23a7fe75 | 1141 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1142 | { |
23a7fe75 MM |
1143 | const struct btrace_function *bfun; |
1144 | struct minimal_symbol *msym; | |
1145 | struct symbol *sym; | |
1146 | ||
1147 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1148 | sym = bfun->sym; |
0b722aec | 1149 | msym = bfun->msym; |
23a7fe75 | 1150 | |
afedecd3 | 1151 | /* Print the function index. */ |
1f77b012 | 1152 | uiout->field_unsigned ("index", bfun->number); |
112e8700 | 1153 | uiout->text ("\t"); |
afedecd3 | 1154 | |
31fd9caa MM |
1155 | /* Indicate gaps in the trace. */ |
1156 | if (bfun->errcode != 0) | |
1157 | { | |
1158 | const struct btrace_config *conf; | |
1159 | ||
1160 | conf = btrace_conf (btinfo); | |
1161 | ||
1162 | /* We have trace so we must have a configuration. */ | |
1163 | gdb_assert (conf != NULL); | |
1164 | ||
1165 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1166 | ||
1167 | continue; | |
1168 | } | |
1169 | ||
8710b709 MM |
1170 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1171 | { | |
1172 | int level = bfun->level + btinfo->level, i; | |
1173 | ||
1174 | for (i = 0; i < level; ++i) | |
112e8700 | 1175 | uiout->text (" "); |
8710b709 MM |
1176 | } |
1177 | ||
1178 | if (sym != NULL) | |
cbe56571 | 1179 | uiout->field_string ("function", SYMBOL_PRINT_NAME (sym), |
e43b10e1 | 1180 | function_name_style.style ()); |
8710b709 | 1181 | else if (msym != NULL) |
cbe56571 | 1182 | uiout->field_string ("function", MSYMBOL_PRINT_NAME (msym), |
e43b10e1 | 1183 | function_name_style.style ()); |
112e8700 | 1184 | else if (!uiout->is_mi_like_p ()) |
cbe56571 | 1185 | uiout->field_string ("function", "??", |
e43b10e1 | 1186 | function_name_style.style ()); |
8710b709 | 1187 | |
1e038f67 | 1188 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1189 | { |
112e8700 | 1190 | uiout->text (_("\tinst ")); |
23a7fe75 | 1191 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1192 | } |
1193 | ||
1e038f67 | 1194 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1195 | { |
112e8700 | 1196 | uiout->text (_("\tat ")); |
23a7fe75 | 1197 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1198 | } |
1199 | ||
112e8700 | 1200 | uiout->text ("\n"); |
afedecd3 MM |
1201 | } |
1202 | } | |
1203 | ||
f6ac5f3d | 1204 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1205 | |
f6ac5f3d PA |
1206 | void |
1207 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1208 | { |
1209 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1210 | struct btrace_call_history *history; |
1211 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1212 | struct ui_out *uiout; |
23a7fe75 | 1213 | unsigned int context, covered; |
afedecd3 MM |
1214 | |
1215 | uiout = current_uiout; | |
2e783024 | 1216 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1217 | context = abs (size); |
afedecd3 MM |
1218 | if (context == 0) |
1219 | error (_("Bad record function-call-history-size.")); | |
1220 | ||
23a7fe75 MM |
1221 | btinfo = require_btrace (); |
1222 | history = btinfo->call_history; | |
1223 | if (history == NULL) | |
afedecd3 | 1224 | { |
07bbe694 | 1225 | struct btrace_insn_iterator *replay; |
afedecd3 | 1226 | |
0cb7c7b0 | 1227 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1228 | |
07bbe694 MM |
1229 | /* If we're replaying, we start at the replay position. Otherwise, we |
1230 | start at the tail of the trace. */ | |
1231 | replay = btinfo->replay; | |
1232 | if (replay != NULL) | |
1233 | { | |
07bbe694 | 1234 | begin.btinfo = btinfo; |
a0f1b963 | 1235 | begin.index = replay->call_index; |
07bbe694 MM |
1236 | } |
1237 | else | |
1238 | btrace_call_end (&begin, btinfo); | |
1239 | ||
1240 | /* We start from here and expand in the requested direction. Then we | |
1241 | expand in the other direction, as well, to fill up any remaining | |
1242 | context. */ | |
1243 | end = begin; | |
1244 | if (size < 0) | |
1245 | { | |
1246 | /* We want the current position covered, as well. */ | |
1247 | covered = btrace_call_next (&end, 1); | |
1248 | covered += btrace_call_prev (&begin, context - covered); | |
1249 | covered += btrace_call_next (&end, context - covered); | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | covered = btrace_call_next (&end, context); | |
1254 | covered += btrace_call_prev (&begin, context- covered); | |
1255 | } | |
afedecd3 MM |
1256 | } |
1257 | else | |
1258 | { | |
23a7fe75 MM |
1259 | begin = history->begin; |
1260 | end = history->end; | |
afedecd3 | 1261 | |
0cb7c7b0 | 1262 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1263 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1264 | |
23a7fe75 MM |
1265 | if (size < 0) |
1266 | { | |
1267 | end = begin; | |
1268 | covered = btrace_call_prev (&begin, context); | |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | begin = end; | |
1273 | covered = btrace_call_next (&end, context); | |
1274 | } | |
afedecd3 MM |
1275 | } |
1276 | ||
23a7fe75 | 1277 | if (covered > 0) |
8710b709 | 1278 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1279 | else |
1280 | { | |
1281 | if (size < 0) | |
1282 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1283 | else | |
1284 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1285 | } | |
afedecd3 | 1286 | |
23a7fe75 | 1287 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1288 | } |
1289 | ||
f6ac5f3d | 1290 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1291 | |
f6ac5f3d PA |
1292 | void |
1293 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1294 | record_print_flags flags) | |
afedecd3 MM |
1295 | { |
1296 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1297 | struct btrace_call_iterator begin, end; |
afedecd3 | 1298 | struct ui_out *uiout; |
23a7fe75 MM |
1299 | unsigned int low, high; |
1300 | int found; | |
afedecd3 MM |
1301 | |
1302 | uiout = current_uiout; | |
2e783024 | 1303 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1304 | low = from; |
1305 | high = to; | |
afedecd3 | 1306 | |
0cb7c7b0 | 1307 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1308 | |
1309 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1310 | if (low != from || high != to) |
afedecd3 MM |
1311 | error (_("Bad range.")); |
1312 | ||
0688d04e | 1313 | if (high < low) |
afedecd3 MM |
1314 | error (_("Bad range.")); |
1315 | ||
23a7fe75 | 1316 | btinfo = require_btrace (); |
afedecd3 | 1317 | |
23a7fe75 MM |
1318 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1319 | if (found == 0) | |
1320 | error (_("Range out of bounds.")); | |
afedecd3 | 1321 | |
23a7fe75 MM |
1322 | found = btrace_find_call_by_number (&end, btinfo, high); |
1323 | if (found == 0) | |
0688d04e MM |
1324 | { |
1325 | /* Silently truncate the range. */ | |
1326 | btrace_call_end (&end, btinfo); | |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | /* We want both begin and end to be inclusive. */ | |
1331 | btrace_call_next (&end, 1); | |
1332 | } | |
afedecd3 | 1333 | |
8710b709 | 1334 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1335 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1336 | } |
1337 | ||
f6ac5f3d | 1338 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1339 | |
f6ac5f3d PA |
1340 | void |
1341 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1342 | record_print_flags flags) | |
afedecd3 MM |
1343 | { |
1344 | ULONGEST begin, end, context; | |
1345 | ||
1346 | context = abs (size); | |
0688d04e MM |
1347 | if (context == 0) |
1348 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1349 | |
1350 | if (size < 0) | |
1351 | { | |
1352 | end = from; | |
1353 | ||
1354 | if (from < context) | |
1355 | begin = 0; | |
1356 | else | |
0688d04e | 1357 | begin = from - context + 1; |
afedecd3 MM |
1358 | } |
1359 | else | |
1360 | { | |
1361 | begin = from; | |
0688d04e | 1362 | end = from + context - 1; |
afedecd3 MM |
1363 | |
1364 | /* Check for wrap-around. */ | |
1365 | if (end < begin) | |
1366 | end = ULONGEST_MAX; | |
1367 | } | |
1368 | ||
f6ac5f3d | 1369 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1370 | } |
1371 | ||
f6ac5f3d | 1372 | /* The record_method method of target record-btrace. */ |
b158a20f | 1373 | |
f6ac5f3d PA |
1374 | enum record_method |
1375 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1376 | { |
b158a20f TW |
1377 | struct thread_info * const tp = find_thread_ptid (ptid); |
1378 | ||
1379 | if (tp == NULL) | |
1380 | error (_("No thread.")); | |
1381 | ||
1382 | if (tp->btrace.target == NULL) | |
1383 | return RECORD_METHOD_NONE; | |
1384 | ||
1385 | return RECORD_METHOD_BTRACE; | |
1386 | } | |
1387 | ||
f6ac5f3d | 1388 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1389 | |
57810aa7 | 1390 | bool |
f6ac5f3d | 1391 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 | 1392 | { |
08036331 PA |
1393 | for (thread_info *tp : all_non_exited_threads (ptid)) |
1394 | if (btrace_is_replaying (tp)) | |
57810aa7 | 1395 | return true; |
07bbe694 | 1396 | |
57810aa7 | 1397 | return false; |
07bbe694 MM |
1398 | } |
1399 | ||
f6ac5f3d | 1400 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1401 | |
57810aa7 | 1402 | bool |
f6ac5f3d | 1403 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1404 | { |
f6ac5f3d | 1405 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1406 | } |
1407 | ||
f6ac5f3d | 1408 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1409 | |
f6ac5f3d PA |
1410 | enum target_xfer_status |
1411 | record_btrace_target::xfer_partial (enum target_object object, | |
1412 | const char *annex, gdb_byte *readbuf, | |
1413 | const gdb_byte *writebuf, ULONGEST offset, | |
1414 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1415 | { |
633785ff | 1416 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1417 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1418 | && !record_btrace_generating_corefile |
f6ac5f3d | 1419 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1420 | { |
1421 | switch (object) | |
1422 | { | |
1423 | case TARGET_OBJECT_MEMORY: | |
1424 | { | |
1425 | struct target_section *section; | |
1426 | ||
1427 | /* We do not allow writing memory in general. */ | |
1428 | if (writebuf != NULL) | |
9b409511 YQ |
1429 | { |
1430 | *xfered_len = len; | |
bc113b4e | 1431 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1432 | } |
633785ff MM |
1433 | |
1434 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1435 | section = target_section_by_addr (this, offset); |
633785ff MM |
1436 | if (section != NULL) |
1437 | { | |
1438 | /* Check if the section we found is readonly. */ | |
fd361982 | 1439 | if ((bfd_section_flags (section->the_bfd_section) |
633785ff MM |
1440 | & SEC_READONLY) != 0) |
1441 | { | |
1442 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1443 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1444 | break; |
1445 | } | |
1446 | } | |
1447 | ||
9b409511 | 1448 | *xfered_len = len; |
bc113b4e | 1449 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1450 | } |
1451 | } | |
1452 | } | |
1453 | ||
1454 | /* Forward the request. */ | |
b6a8c27b PA |
1455 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1456 | offset, len, xfered_len); | |
633785ff MM |
1457 | } |
1458 | ||
f6ac5f3d | 1459 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1460 | |
f6ac5f3d PA |
1461 | int |
1462 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1463 | struct bp_target_info *bp_tgt) | |
633785ff | 1464 | { |
67b5c0c1 MM |
1465 | const char *old; |
1466 | int ret; | |
633785ff MM |
1467 | |
1468 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1469 | duration of this function. */ | |
67b5c0c1 MM |
1470 | old = replay_memory_access; |
1471 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1472 | |
1473 | ret = 0; | |
a70b8144 | 1474 | try |
492d29ea | 1475 | { |
b6a8c27b | 1476 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1477 | } |
230d2906 | 1478 | catch (const gdb_exception &except) |
492d29ea | 1479 | { |
6c63c96a | 1480 | replay_memory_access = old; |
eedc3f4f | 1481 | throw; |
492d29ea | 1482 | } |
6c63c96a | 1483 | replay_memory_access = old; |
633785ff MM |
1484 | |
1485 | return ret; | |
1486 | } | |
1487 | ||
f6ac5f3d | 1488 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1489 | |
f6ac5f3d PA |
1490 | int |
1491 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1492 | struct bp_target_info *bp_tgt, | |
1493 | enum remove_bp_reason reason) | |
633785ff | 1494 | { |
67b5c0c1 MM |
1495 | const char *old; |
1496 | int ret; | |
633785ff MM |
1497 | |
1498 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1499 | duration of this function. */ | |
67b5c0c1 MM |
1500 | old = replay_memory_access; |
1501 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1502 | |
1503 | ret = 0; | |
a70b8144 | 1504 | try |
492d29ea | 1505 | { |
b6a8c27b | 1506 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1507 | } |
230d2906 | 1508 | catch (const gdb_exception &except) |
492d29ea | 1509 | { |
6c63c96a | 1510 | replay_memory_access = old; |
eedc3f4f | 1511 | throw; |
492d29ea | 1512 | } |
6c63c96a | 1513 | replay_memory_access = old; |
633785ff MM |
1514 | |
1515 | return ret; | |
1516 | } | |
1517 | ||
f6ac5f3d | 1518 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1519 | |
f6ac5f3d PA |
1520 | void |
1521 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1522 | { |
1523 | struct btrace_insn_iterator *replay; | |
1524 | struct thread_info *tp; | |
1525 | ||
222312d3 | 1526 | tp = find_thread_ptid (regcache->ptid ()); |
1f3ef581 MM |
1527 | gdb_assert (tp != NULL); |
1528 | ||
1529 | replay = tp->btrace.replay; | |
aef92902 | 1530 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1531 | { |
1532 | const struct btrace_insn *insn; | |
1533 | struct gdbarch *gdbarch; | |
1534 | int pcreg; | |
1535 | ||
ac7936df | 1536 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1537 | pcreg = gdbarch_pc_regnum (gdbarch); |
1538 | if (pcreg < 0) | |
1539 | return; | |
1540 | ||
1541 | /* We can only provide the PC register. */ | |
1542 | if (regno >= 0 && regno != pcreg) | |
1543 | return; | |
1544 | ||
1545 | insn = btrace_insn_get (replay); | |
1546 | gdb_assert (insn != NULL); | |
1547 | ||
73e1c03f | 1548 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1549 | } |
1550 | else | |
b6a8c27b | 1551 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1552 | } |
1553 | ||
f6ac5f3d | 1554 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1555 | |
f6ac5f3d PA |
1556 | void |
1557 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1558 | { |
a52eab48 | 1559 | if (!record_btrace_generating_corefile |
222312d3 | 1560 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1561 | error (_("Cannot write registers while replaying.")); |
1f3ef581 | 1562 | |
491144b5 | 1563 | gdb_assert (may_write_registers); |
1f3ef581 | 1564 | |
b6a8c27b | 1565 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1566 | } |
1567 | ||
f6ac5f3d | 1568 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1569 | |
f6ac5f3d PA |
1570 | void |
1571 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1572 | { |
a52eab48 | 1573 | if (!record_btrace_generating_corefile |
222312d3 | 1574 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1575 | return; |
1576 | ||
b6a8c27b | 1577 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1578 | } |
1579 | ||
0b722aec MM |
1580 | /* The branch trace frame cache. */ |
1581 | ||
1582 | struct btrace_frame_cache | |
1583 | { | |
1584 | /* The thread. */ | |
1585 | struct thread_info *tp; | |
1586 | ||
1587 | /* The frame info. */ | |
1588 | struct frame_info *frame; | |
1589 | ||
1590 | /* The branch trace function segment. */ | |
1591 | const struct btrace_function *bfun; | |
1592 | }; | |
1593 | ||
1594 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1595 | ||
1596 | static htab_t bfcache; | |
1597 | ||
1598 | /* hash_f for htab_create_alloc of bfcache. */ | |
1599 | ||
1600 | static hashval_t | |
1601 | bfcache_hash (const void *arg) | |
1602 | { | |
19ba03f4 SM |
1603 | const struct btrace_frame_cache *cache |
1604 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1605 | |
1606 | return htab_hash_pointer (cache->frame); | |
1607 | } | |
1608 | ||
1609 | /* eq_f for htab_create_alloc of bfcache. */ | |
1610 | ||
1611 | static int | |
1612 | bfcache_eq (const void *arg1, const void *arg2) | |
1613 | { | |
19ba03f4 SM |
1614 | const struct btrace_frame_cache *cache1 |
1615 | = (const struct btrace_frame_cache *) arg1; | |
1616 | const struct btrace_frame_cache *cache2 | |
1617 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1618 | |
1619 | return cache1->frame == cache2->frame; | |
1620 | } | |
1621 | ||
1622 | /* Create a new btrace frame cache. */ | |
1623 | ||
1624 | static struct btrace_frame_cache * | |
1625 | bfcache_new (struct frame_info *frame) | |
1626 | { | |
1627 | struct btrace_frame_cache *cache; | |
1628 | void **slot; | |
1629 | ||
1630 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1631 | cache->frame = frame; | |
1632 | ||
1633 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1634 | gdb_assert (*slot == NULL); | |
1635 | *slot = cache; | |
1636 | ||
1637 | return cache; | |
1638 | } | |
1639 | ||
1640 | /* Extract the branch trace function from a branch trace frame. */ | |
1641 | ||
1642 | static const struct btrace_function * | |
1643 | btrace_get_frame_function (struct frame_info *frame) | |
1644 | { | |
1645 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1646 | struct btrace_frame_cache pattern; |
1647 | void **slot; | |
1648 | ||
1649 | pattern.frame = frame; | |
1650 | ||
1651 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1652 | if (slot == NULL) | |
1653 | return NULL; | |
1654 | ||
19ba03f4 | 1655 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1656 | return cache->bfun; |
1657 | } | |
1658 | ||
cecac1ab MM |
1659 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1660 | ||
1661 | static enum unwind_stop_reason | |
1662 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1663 | void **this_cache) | |
1664 | { | |
0b722aec MM |
1665 | const struct btrace_frame_cache *cache; |
1666 | const struct btrace_function *bfun; | |
1667 | ||
19ba03f4 | 1668 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1669 | bfun = cache->bfun; |
1670 | gdb_assert (bfun != NULL); | |
1671 | ||
42bfe59e | 1672 | if (bfun->up == 0) |
0b722aec MM |
1673 | return UNWIND_UNAVAILABLE; |
1674 | ||
1675 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1676 | } |
1677 | ||
1678 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1679 | ||
1680 | static void | |
1681 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1682 | struct frame_id *this_id) | |
1683 | { | |
0b722aec MM |
1684 | const struct btrace_frame_cache *cache; |
1685 | const struct btrace_function *bfun; | |
4aeb0dfc | 1686 | struct btrace_call_iterator it; |
0b722aec MM |
1687 | CORE_ADDR code, special; |
1688 | ||
19ba03f4 | 1689 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1690 | |
1691 | bfun = cache->bfun; | |
1692 | gdb_assert (bfun != NULL); | |
1693 | ||
4aeb0dfc TW |
1694 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1695 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1696 | |
1697 | code = get_frame_func (this_frame); | |
1698 | special = bfun->number; | |
1699 | ||
1700 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1701 | ||
1702 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1703 | btrace_get_bfun_name (cache->bfun), | |
1704 | core_addr_to_string_nz (this_id->code_addr), | |
1705 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1706 | } |
1707 | ||
1708 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1709 | ||
1710 | static struct value * | |
1711 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1712 | void **this_cache, | |
1713 | int regnum) | |
1714 | { | |
0b722aec MM |
1715 | const struct btrace_frame_cache *cache; |
1716 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1717 | struct btrace_call_iterator it; |
0b722aec MM |
1718 | struct gdbarch *gdbarch; |
1719 | CORE_ADDR pc; | |
1720 | int pcreg; | |
1721 | ||
1722 | gdbarch = get_frame_arch (this_frame); | |
1723 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1724 | if (pcreg < 0 || regnum != pcreg) | |
1725 | throw_error (NOT_AVAILABLE_ERROR, | |
1726 | _("Registers are not available in btrace record history")); | |
1727 | ||
19ba03f4 | 1728 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1729 | bfun = cache->bfun; |
1730 | gdb_assert (bfun != NULL); | |
1731 | ||
42bfe59e | 1732 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1733 | throw_error (NOT_AVAILABLE_ERROR, |
1734 | _("No caller in btrace record history")); | |
1735 | ||
42bfe59e TW |
1736 | caller = btrace_call_get (&it); |
1737 | ||
0b722aec | 1738 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1739 | pc = caller->insn.front ().pc; |
0b722aec MM |
1740 | else |
1741 | { | |
0860c437 | 1742 | pc = caller->insn.back ().pc; |
0b722aec MM |
1743 | pc += gdb_insn_length (gdbarch, pc); |
1744 | } | |
1745 | ||
1746 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1747 | btrace_get_bfun_name (bfun), bfun->level, | |
1748 | core_addr_to_string_nz (pc)); | |
1749 | ||
1750 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1751 | } |
1752 | ||
1753 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1754 | ||
1755 | static int | |
1756 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1757 | struct frame_info *this_frame, | |
1758 | void **this_cache) | |
1759 | { | |
0b722aec MM |
1760 | const struct btrace_function *bfun; |
1761 | struct btrace_frame_cache *cache; | |
cecac1ab | 1762 | struct thread_info *tp; |
0b722aec | 1763 | struct frame_info *next; |
cecac1ab MM |
1764 | |
1765 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1766 | tp = inferior_thread (); |
cecac1ab | 1767 | |
0b722aec MM |
1768 | bfun = NULL; |
1769 | next = get_next_frame (this_frame); | |
1770 | if (next == NULL) | |
1771 | { | |
1772 | const struct btrace_insn_iterator *replay; | |
1773 | ||
1774 | replay = tp->btrace.replay; | |
1775 | if (replay != NULL) | |
08c3f6d2 | 1776 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1777 | } |
1778 | else | |
1779 | { | |
1780 | const struct btrace_function *callee; | |
42bfe59e | 1781 | struct btrace_call_iterator it; |
0b722aec MM |
1782 | |
1783 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1784 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1785 | return 0; | |
1786 | ||
1787 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1788 | return 0; | |
1789 | ||
1790 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1791 | } |
1792 | ||
1793 | if (bfun == NULL) | |
1794 | return 0; | |
1795 | ||
1796 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1797 | btrace_get_bfun_name (bfun), bfun->level); | |
1798 | ||
1799 | /* This is our frame. Initialize the frame cache. */ | |
1800 | cache = bfcache_new (this_frame); | |
1801 | cache->tp = tp; | |
1802 | cache->bfun = bfun; | |
1803 | ||
1804 | *this_cache = cache; | |
1805 | return 1; | |
1806 | } | |
1807 | ||
1808 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1809 | ||
1810 | static int | |
1811 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1812 | struct frame_info *this_frame, | |
1813 | void **this_cache) | |
1814 | { | |
1815 | const struct btrace_function *bfun, *callee; | |
1816 | struct btrace_frame_cache *cache; | |
42bfe59e | 1817 | struct btrace_call_iterator it; |
0b722aec | 1818 | struct frame_info *next; |
42bfe59e | 1819 | struct thread_info *tinfo; |
0b722aec MM |
1820 | |
1821 | next = get_next_frame (this_frame); | |
1822 | if (next == NULL) | |
1823 | return 0; | |
1824 | ||
1825 | callee = btrace_get_frame_function (next); | |
1826 | if (callee == NULL) | |
1827 | return 0; | |
1828 | ||
1829 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1830 | return 0; | |
1831 | ||
00431a78 | 1832 | tinfo = inferior_thread (); |
42bfe59e | 1833 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1834 | return 0; |
1835 | ||
42bfe59e TW |
1836 | bfun = btrace_call_get (&it); |
1837 | ||
0b722aec MM |
1838 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1839 | btrace_get_bfun_name (bfun), bfun->level); | |
1840 | ||
1841 | /* This is our frame. Initialize the frame cache. */ | |
1842 | cache = bfcache_new (this_frame); | |
42bfe59e | 1843 | cache->tp = tinfo; |
0b722aec MM |
1844 | cache->bfun = bfun; |
1845 | ||
1846 | *this_cache = cache; | |
1847 | return 1; | |
1848 | } | |
1849 | ||
1850 | static void | |
1851 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1852 | { | |
1853 | struct btrace_frame_cache *cache; | |
1854 | void **slot; | |
1855 | ||
19ba03f4 | 1856 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1857 | |
1858 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1859 | gdb_assert (slot != NULL); | |
1860 | ||
1861 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1862 | } |
1863 | ||
1864 | /* btrace recording does not store previous memory content, neither the stack | |
1865 | frames content. Any unwinding would return errorneous results as the stack | |
1866 | contents no longer matches the changed PC value restored from history. | |
1867 | Therefore this unwinder reports any possibly unwound registers as | |
1868 | <unavailable>. */ | |
1869 | ||
0b722aec | 1870 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1871 | { |
1872 | NORMAL_FRAME, | |
1873 | record_btrace_frame_unwind_stop_reason, | |
1874 | record_btrace_frame_this_id, | |
1875 | record_btrace_frame_prev_register, | |
1876 | NULL, | |
0b722aec MM |
1877 | record_btrace_frame_sniffer, |
1878 | record_btrace_frame_dealloc_cache | |
1879 | }; | |
1880 | ||
1881 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1882 | { | |
1883 | TAILCALL_FRAME, | |
1884 | record_btrace_frame_unwind_stop_reason, | |
1885 | record_btrace_frame_this_id, | |
1886 | record_btrace_frame_prev_register, | |
1887 | NULL, | |
1888 | record_btrace_tailcall_frame_sniffer, | |
1889 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1890 | }; |
b2f4cfde | 1891 | |
f6ac5f3d | 1892 | /* Implement the get_unwinder method. */ |
ac01945b | 1893 | |
f6ac5f3d PA |
1894 | const struct frame_unwind * |
1895 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1896 | { |
1897 | return &record_btrace_frame_unwind; | |
1898 | } | |
1899 | ||
f6ac5f3d | 1900 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1901 | |
f6ac5f3d PA |
1902 | const struct frame_unwind * |
1903 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1904 | { |
1905 | return &record_btrace_tailcall_frame_unwind; | |
1906 | } | |
1907 | ||
987e68b1 MM |
1908 | /* Return a human-readable string for FLAG. */ |
1909 | ||
1910 | static const char * | |
1911 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1912 | { | |
1913 | switch (flag) | |
1914 | { | |
1915 | case BTHR_STEP: | |
1916 | return "step"; | |
1917 | ||
1918 | case BTHR_RSTEP: | |
1919 | return "reverse-step"; | |
1920 | ||
1921 | case BTHR_CONT: | |
1922 | return "cont"; | |
1923 | ||
1924 | case BTHR_RCONT: | |
1925 | return "reverse-cont"; | |
1926 | ||
1927 | case BTHR_STOP: | |
1928 | return "stop"; | |
1929 | } | |
1930 | ||
1931 | return "<invalid>"; | |
1932 | } | |
1933 | ||
52834460 MM |
1934 | /* Indicate that TP should be resumed according to FLAG. */ |
1935 | ||
1936 | static void | |
1937 | record_btrace_resume_thread (struct thread_info *tp, | |
1938 | enum btrace_thread_flag flag) | |
1939 | { | |
1940 | struct btrace_thread_info *btinfo; | |
1941 | ||
43792cf0 | 1942 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d TT |
1943 | target_pid_to_str (tp->ptid).c_str (), flag, |
1944 | btrace_thread_flag_to_str (flag)); | |
52834460 MM |
1945 | |
1946 | btinfo = &tp->btrace; | |
1947 | ||
52834460 | 1948 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1949 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1950 | |
0ca912df MM |
1951 | /* A resume request overwrites a preceding resume or stop request. */ |
1952 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1953 | btinfo->flags |= flag; |
1954 | } | |
1955 | ||
ec71cc2f MM |
1956 | /* Get the current frame for TP. */ |
1957 | ||
79b8d3b0 TT |
1958 | static struct frame_id |
1959 | get_thread_current_frame_id (struct thread_info *tp) | |
ec71cc2f | 1960 | { |
79b8d3b0 | 1961 | struct frame_id id; |
ec71cc2f MM |
1962 | int executing; |
1963 | ||
00431a78 PA |
1964 | /* Set current thread, which is implicitly used by |
1965 | get_current_frame. */ | |
1966 | scoped_restore_current_thread restore_thread; | |
1967 | ||
1968 | switch_to_thread (tp); | |
ec71cc2f MM |
1969 | |
1970 | /* Clear the executing flag to allow changes to the current frame. | |
1971 | We are not actually running, yet. We just started a reverse execution | |
1972 | command or a record goto command. | |
1973 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1974 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f MM |
1975 | move the thread. Since we need to recompute the stack, we temporarily |
1976 | set EXECUTING to flase. */ | |
00431a78 PA |
1977 | executing = tp->executing; |
1978 | set_executing (inferior_ptid, false); | |
ec71cc2f | 1979 | |
79b8d3b0 | 1980 | id = null_frame_id; |
a70b8144 | 1981 | try |
ec71cc2f | 1982 | { |
79b8d3b0 | 1983 | id = get_frame_id (get_current_frame ()); |
ec71cc2f | 1984 | } |
230d2906 | 1985 | catch (const gdb_exception &except) |
ec71cc2f MM |
1986 | { |
1987 | /* Restore the previous execution state. */ | |
1988 | set_executing (inferior_ptid, executing); | |
1989 | ||
eedc3f4f | 1990 | throw; |
ec71cc2f | 1991 | } |
ec71cc2f MM |
1992 | |
1993 | /* Restore the previous execution state. */ | |
1994 | set_executing (inferior_ptid, executing); | |
1995 | ||
79b8d3b0 | 1996 | return id; |
ec71cc2f MM |
1997 | } |
1998 | ||
52834460 MM |
1999 | /* Start replaying a thread. */ |
2000 | ||
2001 | static struct btrace_insn_iterator * | |
2002 | record_btrace_start_replaying (struct thread_info *tp) | |
2003 | { | |
52834460 MM |
2004 | struct btrace_insn_iterator *replay; |
2005 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2006 | |
2007 | btinfo = &tp->btrace; | |
2008 | replay = NULL; | |
2009 | ||
2010 | /* We can't start replaying without trace. */ | |
b54b03bd | 2011 | if (btinfo->functions.empty ()) |
52834460 MM |
2012 | return NULL; |
2013 | ||
52834460 MM |
2014 | /* GDB stores the current frame_id when stepping in order to detects steps |
2015 | into subroutines. | |
2016 | Since frames are computed differently when we're replaying, we need to | |
2017 | recompute those stored frames and fix them up so we can still detect | |
2018 | subroutines after we started replaying. */ | |
a70b8144 | 2019 | try |
52834460 | 2020 | { |
52834460 MM |
2021 | struct frame_id frame_id; |
2022 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2023 | ||
2024 | /* The current frame without replaying - computed via normal unwind. */ | |
79b8d3b0 | 2025 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2026 | |
2027 | /* Check if we need to update any stepping-related frame id's. */ | |
2028 | upd_step_frame_id = frame_id_eq (frame_id, | |
2029 | tp->control.step_frame_id); | |
2030 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2031 | tp->control.step_stack_frame_id); | |
2032 | ||
2033 | /* We start replaying at the end of the branch trace. This corresponds | |
2034 | to the current instruction. */ | |
8d749320 | 2035 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2036 | btrace_insn_end (replay, btinfo); |
2037 | ||
31fd9caa MM |
2038 | /* Skip gaps at the end of the trace. */ |
2039 | while (btrace_insn_get (replay) == NULL) | |
2040 | { | |
2041 | unsigned int steps; | |
2042 | ||
2043 | steps = btrace_insn_prev (replay, 1); | |
2044 | if (steps == 0) | |
2045 | error (_("No trace.")); | |
2046 | } | |
2047 | ||
52834460 MM |
2048 | /* We're not replaying, yet. */ |
2049 | gdb_assert (btinfo->replay == NULL); | |
2050 | btinfo->replay = replay; | |
2051 | ||
2052 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2053 | registers_changed_thread (tp); |
52834460 MM |
2054 | |
2055 | /* The current frame with replaying - computed via btrace unwind. */ | |
79b8d3b0 | 2056 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2057 | |
2058 | /* Replace stepping related frames where necessary. */ | |
2059 | if (upd_step_frame_id) | |
2060 | tp->control.step_frame_id = frame_id; | |
2061 | if (upd_step_stack_frame_id) | |
2062 | tp->control.step_stack_frame_id = frame_id; | |
2063 | } | |
230d2906 | 2064 | catch (const gdb_exception &except) |
52834460 MM |
2065 | { |
2066 | xfree (btinfo->replay); | |
2067 | btinfo->replay = NULL; | |
2068 | ||
00431a78 | 2069 | registers_changed_thread (tp); |
52834460 | 2070 | |
eedc3f4f | 2071 | throw; |
52834460 MM |
2072 | } |
2073 | ||
2074 | return replay; | |
2075 | } | |
2076 | ||
2077 | /* Stop replaying a thread. */ | |
2078 | ||
2079 | static void | |
2080 | record_btrace_stop_replaying (struct thread_info *tp) | |
2081 | { | |
2082 | struct btrace_thread_info *btinfo; | |
2083 | ||
2084 | btinfo = &tp->btrace; | |
2085 | ||
2086 | xfree (btinfo->replay); | |
2087 | btinfo->replay = NULL; | |
2088 | ||
2089 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2090 | registers_changed_thread (tp); |
52834460 MM |
2091 | } |
2092 | ||
e3cfc1c7 MM |
2093 | /* Stop replaying TP if it is at the end of its execution history. */ |
2094 | ||
2095 | static void | |
2096 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2097 | { | |
2098 | struct btrace_insn_iterator *replay, end; | |
2099 | struct btrace_thread_info *btinfo; | |
2100 | ||
2101 | btinfo = &tp->btrace; | |
2102 | replay = btinfo->replay; | |
2103 | ||
2104 | if (replay == NULL) | |
2105 | return; | |
2106 | ||
2107 | btrace_insn_end (&end, btinfo); | |
2108 | ||
2109 | if (btrace_insn_cmp (replay, &end) == 0) | |
2110 | record_btrace_stop_replaying (tp); | |
2111 | } | |
2112 | ||
f6ac5f3d | 2113 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2114 | |
f6ac5f3d PA |
2115 | void |
2116 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2117 | { |
d2939ba2 | 2118 | enum btrace_thread_flag flag, cflag; |
52834460 | 2119 | |
a068643d | 2120 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (), |
f6ac5f3d | 2121 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2122 | step ? "step" : "cont"); |
52834460 | 2123 | |
0ca912df MM |
2124 | /* Store the execution direction of the last resume. |
2125 | ||
f6ac5f3d | 2126 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2127 | to not change the execution direction in-between. */ |
f6ac5f3d | 2128 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2129 | |
0ca912df | 2130 | /* As long as we're not replaying, just forward the request. |
52834460 | 2131 | |
0ca912df MM |
2132 | For non-stop targets this means that no thread is replaying. In order to |
2133 | make progress, we may need to explicitly move replaying threads to the end | |
2134 | of their execution history. */ | |
f6ac5f3d PA |
2135 | if ((::execution_direction != EXEC_REVERSE) |
2136 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2137 | { |
b6a8c27b | 2138 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2139 | return; |
b2f4cfde MM |
2140 | } |
2141 | ||
52834460 | 2142 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2143 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2144 | { |
2145 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2146 | cflag = BTHR_RCONT; | |
2147 | } | |
52834460 | 2148 | else |
d2939ba2 MM |
2149 | { |
2150 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2151 | cflag = BTHR_CONT; | |
2152 | } | |
52834460 | 2153 | |
52834460 | 2154 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2155 | record_btrace_wait below. |
2156 | ||
2157 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2158 | if (!target_is_non_stop_p ()) | |
2159 | { | |
26a57c92 | 2160 | gdb_assert (inferior_ptid.matches (ptid)); |
d2939ba2 | 2161 | |
08036331 PA |
2162 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2163 | { | |
2164 | if (tp->ptid.matches (inferior_ptid)) | |
2165 | record_btrace_resume_thread (tp, flag); | |
2166 | else | |
2167 | record_btrace_resume_thread (tp, cflag); | |
2168 | } | |
d2939ba2 MM |
2169 | } |
2170 | else | |
2171 | { | |
08036331 PA |
2172 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2173 | record_btrace_resume_thread (tp, flag); | |
d2939ba2 | 2174 | } |
70ad5bff MM |
2175 | |
2176 | /* Async support. */ | |
2177 | if (target_can_async_p ()) | |
2178 | { | |
6a3753b3 | 2179 | target_async (1); |
70ad5bff MM |
2180 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2181 | } | |
52834460 MM |
2182 | } |
2183 | ||
f6ac5f3d | 2184 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2185 | |
f6ac5f3d PA |
2186 | void |
2187 | record_btrace_target::commit_resume () | |
85ad3aaf | 2188 | { |
f6ac5f3d PA |
2189 | if ((::execution_direction != EXEC_REVERSE) |
2190 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2191 | beneath ()->commit_resume (); |
85ad3aaf PA |
2192 | } |
2193 | ||
987e68b1 MM |
2194 | /* Cancel resuming TP. */ |
2195 | ||
2196 | static void | |
2197 | record_btrace_cancel_resume (struct thread_info *tp) | |
2198 | { | |
2199 | enum btrace_thread_flag flags; | |
2200 | ||
2201 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2202 | if (flags == 0) | |
2203 | return; | |
2204 | ||
43792cf0 PA |
2205 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2206 | print_thread_id (tp), | |
a068643d | 2207 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 MM |
2208 | btrace_thread_flag_to_str (flags)); |
2209 | ||
2210 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2211 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2212 | } |
2213 | ||
2214 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2215 | ||
2216 | static struct target_waitstatus | |
2217 | btrace_step_no_history (void) | |
2218 | { | |
2219 | struct target_waitstatus status; | |
2220 | ||
2221 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2222 | ||
2223 | return status; | |
2224 | } | |
2225 | ||
2226 | /* Return a target_waitstatus indicating that a step finished. */ | |
2227 | ||
2228 | static struct target_waitstatus | |
2229 | btrace_step_stopped (void) | |
2230 | { | |
2231 | struct target_waitstatus status; | |
2232 | ||
2233 | status.kind = TARGET_WAITKIND_STOPPED; | |
2234 | status.value.sig = GDB_SIGNAL_TRAP; | |
2235 | ||
2236 | return status; | |
2237 | } | |
2238 | ||
6e4879f0 MM |
2239 | /* Return a target_waitstatus indicating that a thread was stopped as |
2240 | requested. */ | |
2241 | ||
2242 | static struct target_waitstatus | |
2243 | btrace_step_stopped_on_request (void) | |
2244 | { | |
2245 | struct target_waitstatus status; | |
2246 | ||
2247 | status.kind = TARGET_WAITKIND_STOPPED; | |
2248 | status.value.sig = GDB_SIGNAL_0; | |
2249 | ||
2250 | return status; | |
2251 | } | |
2252 | ||
d825d248 MM |
2253 | /* Return a target_waitstatus indicating a spurious stop. */ |
2254 | ||
2255 | static struct target_waitstatus | |
2256 | btrace_step_spurious (void) | |
2257 | { | |
2258 | struct target_waitstatus status; | |
2259 | ||
2260 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2261 | ||
2262 | return status; | |
2263 | } | |
2264 | ||
e3cfc1c7 MM |
2265 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2266 | ||
2267 | static struct target_waitstatus | |
2268 | btrace_step_no_resumed (void) | |
2269 | { | |
2270 | struct target_waitstatus status; | |
2271 | ||
2272 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2273 | ||
2274 | return status; | |
2275 | } | |
2276 | ||
2277 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2278 | ||
2279 | static struct target_waitstatus | |
2280 | btrace_step_again (void) | |
2281 | { | |
2282 | struct target_waitstatus status; | |
2283 | ||
2284 | status.kind = TARGET_WAITKIND_IGNORE; | |
2285 | ||
2286 | return status; | |
2287 | } | |
2288 | ||
52834460 MM |
2289 | /* Clear the record histories. */ |
2290 | ||
2291 | static void | |
2292 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2293 | { | |
2294 | xfree (btinfo->insn_history); | |
2295 | xfree (btinfo->call_history); | |
2296 | ||
2297 | btinfo->insn_history = NULL; | |
2298 | btinfo->call_history = NULL; | |
2299 | } | |
2300 | ||
3c615f99 MM |
2301 | /* Check whether TP's current replay position is at a breakpoint. */ |
2302 | ||
2303 | static int | |
2304 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2305 | { | |
2306 | struct btrace_insn_iterator *replay; | |
2307 | struct btrace_thread_info *btinfo; | |
2308 | const struct btrace_insn *insn; | |
3c615f99 MM |
2309 | |
2310 | btinfo = &tp->btrace; | |
2311 | replay = btinfo->replay; | |
2312 | ||
2313 | if (replay == NULL) | |
2314 | return 0; | |
2315 | ||
2316 | insn = btrace_insn_get (replay); | |
2317 | if (insn == NULL) | |
2318 | return 0; | |
2319 | ||
00431a78 | 2320 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2321 | &btinfo->stop_reason); |
2322 | } | |
2323 | ||
d825d248 | 2324 | /* Step one instruction in forward direction. */ |
52834460 MM |
2325 | |
2326 | static struct target_waitstatus | |
d825d248 | 2327 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2328 | { |
b61ce85c | 2329 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2330 | struct btrace_thread_info *btinfo; |
52834460 | 2331 | |
d825d248 MM |
2332 | btinfo = &tp->btrace; |
2333 | replay = btinfo->replay; | |
2334 | ||
2335 | /* We're done if we're not replaying. */ | |
2336 | if (replay == NULL) | |
2337 | return btrace_step_no_history (); | |
2338 | ||
011c71b6 MM |
2339 | /* Check if we're stepping a breakpoint. */ |
2340 | if (record_btrace_replay_at_breakpoint (tp)) | |
2341 | return btrace_step_stopped (); | |
2342 | ||
b61ce85c MM |
2343 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2344 | jump back to the instruction at which we started. */ | |
2345 | start = *replay; | |
d825d248 MM |
2346 | do |
2347 | { | |
2348 | unsigned int steps; | |
2349 | ||
e3cfc1c7 MM |
2350 | /* We will bail out here if we continue stepping after reaching the end |
2351 | of the execution history. */ | |
d825d248 MM |
2352 | steps = btrace_insn_next (replay, 1); |
2353 | if (steps == 0) | |
b61ce85c MM |
2354 | { |
2355 | *replay = start; | |
2356 | return btrace_step_no_history (); | |
2357 | } | |
d825d248 MM |
2358 | } |
2359 | while (btrace_insn_get (replay) == NULL); | |
2360 | ||
2361 | /* Determine the end of the instruction trace. */ | |
2362 | btrace_insn_end (&end, btinfo); | |
2363 | ||
e3cfc1c7 MM |
2364 | /* The execution trace contains (and ends with) the current instruction. |
2365 | This instruction has not been executed, yet, so the trace really ends | |
2366 | one instruction earlier. */ | |
d825d248 | 2367 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2368 | return btrace_step_no_history (); |
d825d248 MM |
2369 | |
2370 | return btrace_step_spurious (); | |
2371 | } | |
2372 | ||
2373 | /* Step one instruction in backward direction. */ | |
2374 | ||
2375 | static struct target_waitstatus | |
2376 | record_btrace_single_step_backward (struct thread_info *tp) | |
2377 | { | |
b61ce85c | 2378 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2379 | struct btrace_thread_info *btinfo; |
e59fa00f | 2380 | |
52834460 MM |
2381 | btinfo = &tp->btrace; |
2382 | replay = btinfo->replay; | |
2383 | ||
d825d248 MM |
2384 | /* Start replaying if we're not already doing so. */ |
2385 | if (replay == NULL) | |
2386 | replay = record_btrace_start_replaying (tp); | |
2387 | ||
2388 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2389 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2390 | the trace), jump back to the instruction at which we started. */ | |
2391 | start = *replay; | |
d825d248 MM |
2392 | do |
2393 | { | |
2394 | unsigned int steps; | |
2395 | ||
2396 | steps = btrace_insn_prev (replay, 1); | |
2397 | if (steps == 0) | |
b61ce85c MM |
2398 | { |
2399 | *replay = start; | |
2400 | return btrace_step_no_history (); | |
2401 | } | |
d825d248 MM |
2402 | } |
2403 | while (btrace_insn_get (replay) == NULL); | |
2404 | ||
011c71b6 MM |
2405 | /* Check if we're stepping a breakpoint. |
2406 | ||
2407 | For reverse-stepping, this check is after the step. There is logic in | |
2408 | infrun.c that handles reverse-stepping separately. See, for example, | |
2409 | proceed and adjust_pc_after_break. | |
2410 | ||
2411 | This code assumes that for reverse-stepping, PC points to the last | |
2412 | de-executed instruction, whereas for forward-stepping PC points to the | |
2413 | next to-be-executed instruction. */ | |
2414 | if (record_btrace_replay_at_breakpoint (tp)) | |
2415 | return btrace_step_stopped (); | |
2416 | ||
d825d248 MM |
2417 | return btrace_step_spurious (); |
2418 | } | |
2419 | ||
2420 | /* Step a single thread. */ | |
2421 | ||
2422 | static struct target_waitstatus | |
2423 | record_btrace_step_thread (struct thread_info *tp) | |
2424 | { | |
2425 | struct btrace_thread_info *btinfo; | |
2426 | struct target_waitstatus status; | |
2427 | enum btrace_thread_flag flags; | |
2428 | ||
2429 | btinfo = &tp->btrace; | |
2430 | ||
6e4879f0 MM |
2431 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2432 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2433 | |
43792cf0 | 2434 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d | 2435 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 | 2436 | btrace_thread_flag_to_str (flags)); |
52834460 | 2437 | |
6e4879f0 MM |
2438 | /* We can't step without an execution history. */ |
2439 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2440 | return btrace_step_no_history (); | |
2441 | ||
52834460 MM |
2442 | switch (flags) |
2443 | { | |
2444 | default: | |
2445 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2446 | ||
6e4879f0 MM |
2447 | case BTHR_STOP: |
2448 | return btrace_step_stopped_on_request (); | |
2449 | ||
52834460 | 2450 | case BTHR_STEP: |
d825d248 MM |
2451 | status = record_btrace_single_step_forward (tp); |
2452 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2453 | break; |
52834460 MM |
2454 | |
2455 | return btrace_step_stopped (); | |
2456 | ||
2457 | case BTHR_RSTEP: | |
d825d248 MM |
2458 | status = record_btrace_single_step_backward (tp); |
2459 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2460 | break; |
52834460 MM |
2461 | |
2462 | return btrace_step_stopped (); | |
2463 | ||
2464 | case BTHR_CONT: | |
e3cfc1c7 MM |
2465 | status = record_btrace_single_step_forward (tp); |
2466 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2467 | break; | |
52834460 | 2468 | |
e3cfc1c7 MM |
2469 | btinfo->flags |= flags; |
2470 | return btrace_step_again (); | |
52834460 MM |
2471 | |
2472 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2473 | status = record_btrace_single_step_backward (tp); |
2474 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2475 | break; | |
52834460 | 2476 | |
e3cfc1c7 MM |
2477 | btinfo->flags |= flags; |
2478 | return btrace_step_again (); | |
2479 | } | |
d825d248 | 2480 | |
f6ac5f3d | 2481 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2482 | method will stop the thread for whom the event is reported. */ |
2483 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2484 | btinfo->flags |= flags; | |
52834460 | 2485 | |
e3cfc1c7 | 2486 | return status; |
b2f4cfde MM |
2487 | } |
2488 | ||
a6b5be76 MM |
2489 | /* Announce further events if necessary. */ |
2490 | ||
2491 | static void | |
53127008 SM |
2492 | record_btrace_maybe_mark_async_event |
2493 | (const std::vector<thread_info *> &moving, | |
2494 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2495 | { |
53127008 SM |
2496 | bool more_moving = !moving.empty (); |
2497 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2498 | |
2499 | if (!more_moving && !more_no_history) | |
2500 | return; | |
2501 | ||
2502 | if (more_moving) | |
2503 | DEBUG ("movers pending"); | |
2504 | ||
2505 | if (more_no_history) | |
2506 | DEBUG ("no-history pending"); | |
2507 | ||
2508 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2509 | } | |
2510 | ||
f6ac5f3d | 2511 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2512 | |
f6ac5f3d PA |
2513 | ptid_t |
2514 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2515 | int options) | |
b2f4cfde | 2516 | { |
53127008 SM |
2517 | std::vector<thread_info *> moving; |
2518 | std::vector<thread_info *> no_history; | |
52834460 | 2519 | |
a068643d | 2520 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid).c_str (), options); |
52834460 | 2521 | |
b2f4cfde | 2522 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2523 | if ((::execution_direction != EXEC_REVERSE) |
2524 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2525 | { |
b6a8c27b | 2526 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2527 | } |
2528 | ||
e3cfc1c7 | 2529 | /* Keep a work list of moving threads. */ |
08036331 PA |
2530 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2531 | if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) | |
2532 | moving.push_back (tp); | |
e3cfc1c7 | 2533 | |
53127008 | 2534 | if (moving.empty ()) |
52834460 | 2535 | { |
e3cfc1c7 | 2536 | *status = btrace_step_no_resumed (); |
52834460 | 2537 | |
a068643d | 2538 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (), |
23fdd69e | 2539 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2540 | |
e3cfc1c7 | 2541 | return null_ptid; |
52834460 MM |
2542 | } |
2543 | ||
e3cfc1c7 MM |
2544 | /* Step moving threads one by one, one step each, until either one thread |
2545 | reports an event or we run out of threads to step. | |
2546 | ||
2547 | When stepping more than one thread, chances are that some threads reach | |
2548 | the end of their execution history earlier than others. If we reported | |
2549 | this immediately, all-stop on top of non-stop would stop all threads and | |
2550 | resume the same threads next time. And we would report the same thread | |
2551 | having reached the end of its execution history again. | |
2552 | ||
2553 | In the worst case, this would starve the other threads. But even if other | |
2554 | threads would be allowed to make progress, this would result in far too | |
2555 | many intermediate stops. | |
2556 | ||
2557 | We therefore delay the reporting of "no execution history" until we have | |
2558 | nothing else to report. By this time, all threads should have moved to | |
2559 | either the beginning or the end of their execution history. There will | |
2560 | be a single user-visible stop. */ | |
53127008 SM |
2561 | struct thread_info *eventing = NULL; |
2562 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2563 | { |
53127008 | 2564 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2565 | { |
53127008 SM |
2566 | thread_info *tp = moving[ix]; |
2567 | ||
e3cfc1c7 MM |
2568 | *status = record_btrace_step_thread (tp); |
2569 | ||
2570 | switch (status->kind) | |
2571 | { | |
2572 | case TARGET_WAITKIND_IGNORE: | |
2573 | ix++; | |
2574 | break; | |
2575 | ||
2576 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2577 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2578 | break; |
2579 | ||
2580 | default: | |
53127008 | 2581 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2582 | break; |
2583 | } | |
2584 | } | |
2585 | } | |
2586 | ||
2587 | if (eventing == NULL) | |
2588 | { | |
2589 | /* We started with at least one moving thread. This thread must have | |
2590 | either stopped or reached the end of its execution history. | |
2591 | ||
2592 | In the former case, EVENTING must not be NULL. | |
2593 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2594 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2595 | |
2596 | /* We kept threads moving at the end of their execution history. Stop | |
2597 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2598 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2599 | eventing->btrace.flags &= ~BTHR_MOVE; |
2600 | ||
2601 | *status = btrace_step_no_history (); | |
2602 | } | |
2603 | ||
2604 | gdb_assert (eventing != NULL); | |
2605 | ||
2606 | /* We kept threads replaying at the end of their execution history. Stop | |
2607 | replaying EVENTING now that we are going to report its stop. */ | |
2608 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2609 | |
2610 | /* Stop all other threads. */ | |
5953356c | 2611 | if (!target_is_non_stop_p ()) |
53127008 | 2612 | { |
08036331 | 2613 | for (thread_info *tp : all_non_exited_threads ()) |
53127008 SM |
2614 | record_btrace_cancel_resume (tp); |
2615 | } | |
52834460 | 2616 | |
a6b5be76 MM |
2617 | /* In async mode, we need to announce further events. */ |
2618 | if (target_is_async_p ()) | |
2619 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2620 | ||
52834460 | 2621 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2622 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2623 | |
2624 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2625 | registers_changed_thread (eventing); |
e3cfc1c7 | 2626 | |
43792cf0 PA |
2627 | DEBUG ("wait ended by thread %s (%s): %s", |
2628 | print_thread_id (eventing), | |
a068643d | 2629 | target_pid_to_str (eventing->ptid).c_str (), |
23fdd69e | 2630 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2631 | |
e3cfc1c7 | 2632 | return eventing->ptid; |
52834460 MM |
2633 | } |
2634 | ||
f6ac5f3d | 2635 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2636 | |
f6ac5f3d PA |
2637 | void |
2638 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 | 2639 | { |
a068643d | 2640 | DEBUG ("stop %s", target_pid_to_str (ptid).c_str ()); |
6e4879f0 MM |
2641 | |
2642 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2643 | if ((::execution_direction != EXEC_REVERSE) |
2644 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2645 | { |
b6a8c27b | 2646 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2647 | } |
2648 | else | |
2649 | { | |
08036331 PA |
2650 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2651 | { | |
2652 | tp->btrace.flags &= ~BTHR_MOVE; | |
2653 | tp->btrace.flags |= BTHR_STOP; | |
2654 | } | |
6e4879f0 MM |
2655 | } |
2656 | } | |
2657 | ||
f6ac5f3d | 2658 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2659 | |
57810aa7 | 2660 | bool |
f6ac5f3d | 2661 | record_btrace_target::can_execute_reverse () |
52834460 | 2662 | { |
57810aa7 | 2663 | return true; |
52834460 MM |
2664 | } |
2665 | ||
f6ac5f3d | 2666 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2667 | |
57810aa7 | 2668 | bool |
f6ac5f3d | 2669 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2670 | { |
f6ac5f3d | 2671 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2672 | { |
2673 | struct thread_info *tp = inferior_thread (); | |
2674 | ||
2675 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2676 | } | |
2677 | ||
b6a8c27b | 2678 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2679 | } |
2680 | ||
f6ac5f3d | 2681 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2682 | record-btrace. */ |
2683 | ||
57810aa7 | 2684 | bool |
f6ac5f3d | 2685 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2686 | { |
f6ac5f3d | 2687 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2688 | return true; |
9e8915c6 | 2689 | |
b6a8c27b | 2690 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2691 | } |
2692 | ||
f6ac5f3d | 2693 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2694 | |
57810aa7 | 2695 | bool |
f6ac5f3d | 2696 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2697 | { |
f6ac5f3d | 2698 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2699 | { |
2700 | struct thread_info *tp = inferior_thread (); | |
2701 | ||
2702 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2703 | } | |
2704 | ||
b6a8c27b | 2705 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2706 | } |
2707 | ||
f6ac5f3d | 2708 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2709 | record-btrace. */ |
2710 | ||
57810aa7 | 2711 | bool |
f6ac5f3d | 2712 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2713 | { |
f6ac5f3d | 2714 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2715 | return true; |
52834460 | 2716 | |
b6a8c27b | 2717 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2718 | } |
2719 | ||
f6ac5f3d | 2720 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2721 | |
f6ac5f3d PA |
2722 | void |
2723 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2724 | { |
e8032dde | 2725 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2726 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2727 | return; |
2728 | ||
2729 | /* Forward the request. */ | |
b6a8c27b | 2730 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2731 | } |
2732 | ||
f6ac5f3d | 2733 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2734 | |
57810aa7 | 2735 | bool |
f6ac5f3d | 2736 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2737 | { |
2738 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2739 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2740 | return true; |
e2887aa3 MM |
2741 | |
2742 | /* Forward the request. */ | |
b6a8c27b | 2743 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2744 | } |
2745 | ||
066ce621 MM |
2746 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2747 | is stopped. */ | |
2748 | ||
2749 | static void | |
2750 | record_btrace_set_replay (struct thread_info *tp, | |
2751 | const struct btrace_insn_iterator *it) | |
2752 | { | |
2753 | struct btrace_thread_info *btinfo; | |
2754 | ||
2755 | btinfo = &tp->btrace; | |
2756 | ||
a0f1b963 | 2757 | if (it == NULL) |
52834460 | 2758 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2759 | else |
2760 | { | |
2761 | if (btinfo->replay == NULL) | |
52834460 | 2762 | record_btrace_start_replaying (tp); |
066ce621 MM |
2763 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2764 | return; | |
2765 | ||
2766 | *btinfo->replay = *it; | |
00431a78 | 2767 | registers_changed_thread (tp); |
066ce621 MM |
2768 | } |
2769 | ||
52834460 MM |
2770 | /* Start anew from the new replay position. */ |
2771 | record_btrace_clear_histories (btinfo); | |
485668e5 | 2772 | |
f2ffa92b PA |
2773 | inferior_thread ()->suspend.stop_pc |
2774 | = regcache_read_pc (get_current_regcache ()); | |
485668e5 | 2775 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
066ce621 MM |
2776 | } |
2777 | ||
f6ac5f3d | 2778 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2779 | |
f6ac5f3d PA |
2780 | void |
2781 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2782 | { |
2783 | struct thread_info *tp; | |
2784 | struct btrace_insn_iterator begin; | |
2785 | ||
2786 | tp = require_btrace_thread (); | |
2787 | ||
2788 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2789 | |
2790 | /* Skip gaps at the beginning of the trace. */ | |
2791 | while (btrace_insn_get (&begin) == NULL) | |
2792 | { | |
2793 | unsigned int steps; | |
2794 | ||
2795 | steps = btrace_insn_next (&begin, 1); | |
2796 | if (steps == 0) | |
2797 | error (_("No trace.")); | |
2798 | } | |
2799 | ||
066ce621 | 2800 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2801 | } |
2802 | ||
f6ac5f3d | 2803 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2804 | |
f6ac5f3d PA |
2805 | void |
2806 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2807 | { |
2808 | struct thread_info *tp; | |
2809 | ||
2810 | tp = require_btrace_thread (); | |
2811 | ||
2812 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2813 | } |
2814 | ||
f6ac5f3d | 2815 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2816 | |
f6ac5f3d PA |
2817 | void |
2818 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2819 | { |
2820 | struct thread_info *tp; | |
2821 | struct btrace_insn_iterator it; | |
2822 | unsigned int number; | |
2823 | int found; | |
2824 | ||
2825 | number = insn; | |
2826 | ||
2827 | /* Check for wrap-arounds. */ | |
2828 | if (number != insn) | |
2829 | error (_("Instruction number out of range.")); | |
2830 | ||
2831 | tp = require_btrace_thread (); | |
2832 | ||
2833 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2834 | |
2835 | /* Check if the instruction could not be found or is a gap. */ | |
2836 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2837 | error (_("No such instruction.")); |
2838 | ||
2839 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2840 | } |
2841 | ||
f6ac5f3d | 2842 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2843 | |
f6ac5f3d PA |
2844 | void |
2845 | record_btrace_target::record_stop_replaying () | |
797094dd | 2846 | { |
08036331 | 2847 | for (thread_info *tp : all_non_exited_threads ()) |
797094dd MM |
2848 | record_btrace_stop_replaying (tp); |
2849 | } | |
2850 | ||
f6ac5f3d | 2851 | /* The execution_direction target method. */ |
70ad5bff | 2852 | |
f6ac5f3d PA |
2853 | enum exec_direction_kind |
2854 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2855 | { |
2856 | return record_btrace_resume_exec_dir; | |
2857 | } | |
2858 | ||
f6ac5f3d | 2859 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2860 | |
f6ac5f3d PA |
2861 | void |
2862 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2863 | { |
2864 | record_btrace_generating_corefile = 1; | |
2865 | } | |
2866 | ||
f6ac5f3d | 2867 | /* The done_generating_core target method. */ |
aef92902 | 2868 | |
f6ac5f3d PA |
2869 | void |
2870 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2871 | { |
2872 | record_btrace_generating_corefile = 0; | |
2873 | } | |
2874 | ||
f4abbc16 MM |
2875 | /* Start recording in BTS format. */ |
2876 | ||
2877 | static void | |
cdb34d4a | 2878 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2879 | { |
f4abbc16 MM |
2880 | if (args != NULL && *args != 0) |
2881 | error (_("Invalid argument.")); | |
2882 | ||
2883 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2884 | ||
a70b8144 | 2885 | try |
492d29ea | 2886 | { |
95a6b0a1 | 2887 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2888 | } |
230d2906 | 2889 | catch (const gdb_exception &exception) |
f4abbc16 MM |
2890 | { |
2891 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2892 | throw; |
f4abbc16 MM |
2893 | } |
2894 | } | |
2895 | ||
bc504a31 | 2896 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2897 | |
2898 | static void | |
cdb34d4a | 2899 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2900 | { |
2901 | if (args != NULL && *args != 0) | |
2902 | error (_("Invalid argument.")); | |
2903 | ||
b20a6524 | 2904 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2905 | |
a70b8144 | 2906 | try |
492d29ea | 2907 | { |
95a6b0a1 | 2908 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2909 | } |
230d2906 | 2910 | catch (const gdb_exception &exception) |
492d29ea PA |
2911 | { |
2912 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2913 | throw; |
492d29ea | 2914 | } |
afedecd3 MM |
2915 | } |
2916 | ||
b20a6524 MM |
2917 | /* Alias for "target record". */ |
2918 | ||
2919 | static void | |
981a3fb3 | 2920 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2921 | { |
2922 | if (args != NULL && *args != 0) | |
2923 | error (_("Invalid argument.")); | |
2924 | ||
2925 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2926 | ||
a70b8144 | 2927 | try |
b20a6524 | 2928 | { |
95a6b0a1 | 2929 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2930 | } |
230d2906 | 2931 | catch (const gdb_exception &exception) |
b20a6524 MM |
2932 | { |
2933 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2934 | ||
a70b8144 | 2935 | try |
b20a6524 | 2936 | { |
95a6b0a1 | 2937 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2938 | } |
230d2906 | 2939 | catch (const gdb_exception &ex) |
b20a6524 MM |
2940 | { |
2941 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2942 | throw; |
b20a6524 | 2943 | } |
b20a6524 | 2944 | } |
b20a6524 MM |
2945 | } |
2946 | ||
67b5c0c1 MM |
2947 | /* The "set record btrace" command. */ |
2948 | ||
2949 | static void | |
981a3fb3 | 2950 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2951 | { |
b85310e1 MM |
2952 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2953 | "by an appropriate subcommand.\n")); | |
2954 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
2955 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
2956 | } |
2957 | ||
2958 | /* The "show record btrace" command. */ | |
2959 | ||
2960 | static void | |
981a3fb3 | 2961 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
2962 | { |
2963 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2964 | } | |
2965 | ||
2966 | /* The "show record btrace replay-memory-access" command. */ | |
2967 | ||
2968 | static void | |
2969 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2970 | struct cmd_list_element *c, const char *value) | |
2971 | { | |
2972 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2973 | replay_memory_access); | |
2974 | } | |
2975 | ||
4a4495d6 MM |
2976 | /* The "set record btrace cpu none" command. */ |
2977 | ||
2978 | static void | |
2979 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
2980 | { | |
2981 | if (args != nullptr && *args != 0) | |
2982 | error (_("Trailing junk: '%s'."), args); | |
2983 | ||
2984 | record_btrace_cpu_state = CS_NONE; | |
2985 | } | |
2986 | ||
2987 | /* The "set record btrace cpu auto" command. */ | |
2988 | ||
2989 | static void | |
2990 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
2991 | { | |
2992 | if (args != nullptr && *args != 0) | |
2993 | error (_("Trailing junk: '%s'."), args); | |
2994 | ||
2995 | record_btrace_cpu_state = CS_AUTO; | |
2996 | } | |
2997 | ||
2998 | /* The "set record btrace cpu" command. */ | |
2999 | ||
3000 | static void | |
3001 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3002 | { | |
3003 | if (args == nullptr) | |
3004 | args = ""; | |
3005 | ||
3006 | /* We use a hard-coded vendor string for now. */ | |
3007 | unsigned int family, model, stepping; | |
3008 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3009 | &model, &l1, &stepping, &l2); | |
3010 | if (matches == 3) | |
3011 | { | |
3012 | if (strlen (args) != l2) | |
3013 | error (_("Trailing junk: '%s'."), args + l2); | |
3014 | } | |
3015 | else if (matches == 2) | |
3016 | { | |
3017 | if (strlen (args) != l1) | |
3018 | error (_("Trailing junk: '%s'."), args + l1); | |
3019 | ||
3020 | stepping = 0; | |
3021 | } | |
3022 | else | |
3023 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3024 | ||
3025 | if (USHRT_MAX < family) | |
3026 | error (_("Cpu family too big.")); | |
3027 | ||
3028 | if (UCHAR_MAX < model) | |
3029 | error (_("Cpu model too big.")); | |
3030 | ||
3031 | if (UCHAR_MAX < stepping) | |
3032 | error (_("Cpu stepping too big.")); | |
3033 | ||
3034 | record_btrace_cpu.vendor = CV_INTEL; | |
3035 | record_btrace_cpu.family = family; | |
3036 | record_btrace_cpu.model = model; | |
3037 | record_btrace_cpu.stepping = stepping; | |
3038 | ||
3039 | record_btrace_cpu_state = CS_CPU; | |
3040 | } | |
3041 | ||
3042 | /* The "show record btrace cpu" command. */ | |
3043 | ||
3044 | static void | |
3045 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3046 | { | |
4a4495d6 MM |
3047 | if (args != nullptr && *args != 0) |
3048 | error (_("Trailing junk: '%s'."), args); | |
3049 | ||
3050 | switch (record_btrace_cpu_state) | |
3051 | { | |
3052 | case CS_AUTO: | |
3053 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3054 | return; | |
3055 | ||
3056 | case CS_NONE: | |
3057 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3058 | return; | |
3059 | ||
3060 | case CS_CPU: | |
3061 | switch (record_btrace_cpu.vendor) | |
3062 | { | |
3063 | case CV_INTEL: | |
3064 | if (record_btrace_cpu.stepping == 0) | |
3065 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3066 | record_btrace_cpu.family, | |
3067 | record_btrace_cpu.model); | |
3068 | else | |
3069 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3070 | record_btrace_cpu.family, | |
3071 | record_btrace_cpu.model, | |
3072 | record_btrace_cpu.stepping); | |
3073 | return; | |
3074 | } | |
3075 | } | |
3076 | ||
3077 | error (_("Internal error: bad cpu state.")); | |
3078 | } | |
3079 | ||
3080 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3081 | |
3082 | static void | |
981a3fb3 | 3083 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3084 | { |
3085 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3086 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3087 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3088 | all_commands, gdb_stdout); | |
3089 | } | |
3090 | ||
3091 | /* The "show record btrace bts" command. */ | |
3092 | ||
3093 | static void | |
981a3fb3 | 3094 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3095 | { |
3096 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3097 | } | |
3098 | ||
b20a6524 MM |
3099 | /* The "set record btrace pt" command. */ |
3100 | ||
3101 | static void | |
981a3fb3 | 3102 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3103 | { |
3104 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3105 | "by an appropriate subcommand.\n")); | |
3106 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3107 | all_commands, gdb_stdout); | |
3108 | } | |
3109 | ||
3110 | /* The "show record btrace pt" command. */ | |
3111 | ||
3112 | static void | |
981a3fb3 | 3113 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3114 | { |
3115 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3116 | } | |
3117 | ||
3118 | /* The "record bts buffer-size" show value function. */ | |
3119 | ||
3120 | static void | |
3121 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3122 | struct cmd_list_element *c, | |
3123 | const char *value) | |
3124 | { | |
3125 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3126 | value); | |
3127 | } | |
3128 | ||
3129 | /* The "record pt buffer-size" show value function. */ | |
3130 | ||
3131 | static void | |
3132 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3133 | struct cmd_list_element *c, | |
3134 | const char *value) | |
3135 | { | |
3136 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3137 | value); | |
3138 | } | |
3139 | ||
afedecd3 MM |
3140 | /* Initialize btrace commands. */ |
3141 | ||
3142 | void | |
3143 | _initialize_record_btrace (void) | |
3144 | { | |
f4abbc16 MM |
3145 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3146 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3147 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3148 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3149 | ||
f4abbc16 MM |
3150 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3151 | _("\ | |
3152 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3153 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3154 | This format may not be available on all processors."), | |
3155 | &record_btrace_cmdlist); | |
3156 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3157 | ||
b20a6524 MM |
3158 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3159 | _("\ | |
bc504a31 | 3160 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3161 | This format may not be available on all processors."), |
3162 | &record_btrace_cmdlist); | |
3163 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3164 | ||
67b5c0c1 | 3165 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
590042fc | 3166 | _("Set record options."), &set_record_btrace_cmdlist, |
67b5c0c1 MM |
3167 | "set record btrace ", 0, &set_record_cmdlist); |
3168 | ||
3169 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
590042fc | 3170 | _("Show record options."), &show_record_btrace_cmdlist, |
67b5c0c1 MM |
3171 | "show record btrace ", 0, &show_record_cmdlist); |
3172 | ||
3173 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3174 | replay_memory_access_types, &replay_memory_access, _("\ | |
3175 | Set what memory accesses are allowed during replay."), _("\ | |
3176 | Show what memory accesses are allowed during replay."), | |
3177 | _("Default is READ-ONLY.\n\n\ | |
3178 | The btrace record target does not trace data.\n\ | |
3179 | The memory therefore corresponds to the live target and not \ | |
3180 | to the current replay position.\n\n\ | |
3181 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3182 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3183 | replay."), | |
3184 | NULL, cmd_show_replay_memory_access, | |
3185 | &set_record_btrace_cmdlist, | |
3186 | &show_record_btrace_cmdlist); | |
3187 | ||
4a4495d6 MM |
3188 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3189 | _("\ | |
3190 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3191 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3192 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3193 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3194 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3195 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3196 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3197 | When set to \"none\", errata workarounds are disabled."), | |
3198 | &set_record_btrace_cpu_cmdlist, | |
590042fc | 3199 | "set record btrace cpu ", 1, |
4a4495d6 MM |
3200 | &set_record_btrace_cmdlist); |
3201 | ||
3202 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3203 | Automatically determine the cpu to be used for trace decode."), | |
3204 | &set_record_btrace_cpu_cmdlist); | |
3205 | ||
3206 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3207 | Do not enable errata workarounds for trace decode."), | |
3208 | &set_record_btrace_cpu_cmdlist); | |
3209 | ||
3210 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3211 | Show the cpu to be used for trace decode."), | |
3212 | &show_record_btrace_cmdlist); | |
3213 | ||
d33501a5 | 3214 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
590042fc | 3215 | _("Set record btrace bts options."), |
d33501a5 MM |
3216 | &set_record_btrace_bts_cmdlist, |
3217 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3218 | ||
3219 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
590042fc | 3220 | _("Show record btrace bts options."), |
d33501a5 MM |
3221 | &show_record_btrace_bts_cmdlist, |
3222 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3223 | ||
3224 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3225 | &record_btrace_conf.bts.size, | |
3226 | _("Set the record/replay bts buffer size."), | |
3227 | _("Show the record/replay bts buffer size."), _("\ | |
3228 | When starting recording request a trace buffer of this size. \ | |
3229 | The actual buffer size may differ from the requested size. \ | |
3230 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3231 | Bigger buffers allow longer recording but also take more time to process \ | |
3232 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3233 | The trace buffer size may not be changed while recording."), NULL, |
3234 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3235 | &set_record_btrace_bts_cmdlist, |
3236 | &show_record_btrace_bts_cmdlist); | |
3237 | ||
b20a6524 | 3238 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
590042fc | 3239 | _("Set record btrace pt options."), |
b20a6524 MM |
3240 | &set_record_btrace_pt_cmdlist, |
3241 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3242 | ||
3243 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
590042fc | 3244 | _("Show record btrace pt options."), |
b20a6524 MM |
3245 | &show_record_btrace_pt_cmdlist, |
3246 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3247 | ||
3248 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3249 | &record_btrace_conf.pt.size, | |
3250 | _("Set the record/replay pt buffer size."), | |
3251 | _("Show the record/replay pt buffer size."), _("\ | |
3252 | Bigger buffers allow longer recording but also take more time to process \ | |
3253 | the recorded execution.\n\ | |
3254 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3255 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3256 | &set_record_btrace_pt_cmdlist, | |
3257 | &show_record_btrace_pt_cmdlist); | |
3258 | ||
d9f719f1 | 3259 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3260 | |
3261 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3262 | xcalloc, xfree); | |
d33501a5 MM |
3263 | |
3264 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3265 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3266 | } |