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" | |
00431a78 | 41 | #include "inferior.h" |
325fac50 | 42 | #include <algorithm> |
0d12e84c | 43 | #include "gdbarch.h" |
e43b10e1 | 44 | #include "cli/cli-style.h" |
afedecd3 | 45 | |
d9f719f1 PA |
46 | static const target_info record_btrace_target_info = { |
47 | "record-btrace", | |
48 | N_("Branch tracing target"), | |
49 | N_("Collect control-flow trace and provide the execution history.") | |
50 | }; | |
51 | ||
afedecd3 | 52 | /* The target_ops of record-btrace. */ |
f6ac5f3d PA |
53 | |
54 | class record_btrace_target final : public target_ops | |
55 | { | |
56 | public: | |
d9f719f1 PA |
57 | const target_info &info () const override |
58 | { return record_btrace_target_info; } | |
f6ac5f3d | 59 | |
66b4deae PA |
60 | strata stratum () const override { return record_stratum; } |
61 | ||
f6ac5f3d PA |
62 | void close () override; |
63 | void async (int) override; | |
64 | ||
65 | void detach (inferior *inf, int from_tty) override | |
66 | { record_detach (this, inf, from_tty); } | |
67 | ||
68 | void disconnect (const char *, int) override; | |
69 | ||
70 | void mourn_inferior () override | |
71 | { record_mourn_inferior (this); } | |
72 | ||
73 | void kill () override | |
74 | { record_kill (this); } | |
75 | ||
76 | enum record_method record_method (ptid_t ptid) override; | |
77 | ||
78 | void stop_recording () override; | |
79 | void info_record () override; | |
80 | ||
81 | void insn_history (int size, gdb_disassembly_flags flags) override; | |
82 | void insn_history_from (ULONGEST from, int size, | |
83 | gdb_disassembly_flags flags) override; | |
84 | void insn_history_range (ULONGEST begin, ULONGEST end, | |
85 | gdb_disassembly_flags flags) override; | |
86 | void call_history (int size, record_print_flags flags) override; | |
87 | void call_history_from (ULONGEST begin, int size, record_print_flags flags) | |
88 | override; | |
89 | void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) | |
90 | override; | |
91 | ||
57810aa7 PA |
92 | bool record_is_replaying (ptid_t ptid) override; |
93 | bool record_will_replay (ptid_t ptid, int dir) override; | |
f6ac5f3d PA |
94 | void record_stop_replaying () override; |
95 | ||
96 | enum target_xfer_status xfer_partial (enum target_object object, | |
97 | const char *annex, | |
98 | gdb_byte *readbuf, | |
99 | const gdb_byte *writebuf, | |
100 | ULONGEST offset, ULONGEST len, | |
101 | ULONGEST *xfered_len) override; | |
102 | ||
103 | int insert_breakpoint (struct gdbarch *, | |
104 | struct bp_target_info *) override; | |
105 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
106 | enum remove_bp_reason) override; | |
107 | ||
108 | void fetch_registers (struct regcache *, int) override; | |
109 | ||
110 | void store_registers (struct regcache *, int) override; | |
111 | void prepare_to_store (struct regcache *) override; | |
112 | ||
113 | const struct frame_unwind *get_unwinder () override; | |
114 | ||
115 | const struct frame_unwind *get_tailcall_unwinder () override; | |
116 | ||
117 | void commit_resume () override; | |
118 | void resume (ptid_t, int, enum gdb_signal) override; | |
119 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
120 | ||
121 | void stop (ptid_t) override; | |
122 | void update_thread_list () override; | |
57810aa7 | 123 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
124 | void goto_record_begin () override; |
125 | void goto_record_end () override; | |
126 | void goto_record (ULONGEST insn) override; | |
127 | ||
57810aa7 | 128 | bool can_execute_reverse () override; |
f6ac5f3d | 129 | |
57810aa7 PA |
130 | bool stopped_by_sw_breakpoint () override; |
131 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 132 | |
57810aa7 PA |
133 | bool stopped_by_hw_breakpoint () override; |
134 | bool supports_stopped_by_hw_breakpoint () override; | |
f6ac5f3d PA |
135 | |
136 | enum exec_direction_kind execution_direction () override; | |
137 | void prepare_to_generate_core () override; | |
138 | void done_generating_core () override; | |
139 | }; | |
140 | ||
141 | static record_btrace_target record_btrace_ops; | |
142 | ||
143 | /* Initialize the record-btrace target ops. */ | |
afedecd3 | 144 | |
76727919 TT |
145 | /* Token associated with a new-thread observer enabling branch tracing |
146 | for the new thread. */ | |
3dcfdc58 | 147 | static const gdb::observers::token record_btrace_thread_observer_token {}; |
afedecd3 | 148 | |
67b5c0c1 MM |
149 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
150 | static const char replay_memory_access_read_only[] = "read-only"; | |
151 | static const char replay_memory_access_read_write[] = "read-write"; | |
152 | static const char *const replay_memory_access_types[] = | |
153 | { | |
154 | replay_memory_access_read_only, | |
155 | replay_memory_access_read_write, | |
156 | NULL | |
157 | }; | |
158 | ||
159 | /* The currently allowed replay memory access type. */ | |
160 | static const char *replay_memory_access = replay_memory_access_read_only; | |
161 | ||
4a4495d6 MM |
162 | /* The cpu state kinds. */ |
163 | enum record_btrace_cpu_state_kind | |
164 | { | |
165 | CS_AUTO, | |
166 | CS_NONE, | |
167 | CS_CPU | |
168 | }; | |
169 | ||
170 | /* The current cpu state. */ | |
171 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
172 | ||
173 | /* The current cpu for trace decode. */ | |
174 | static struct btrace_cpu record_btrace_cpu; | |
175 | ||
67b5c0c1 MM |
176 | /* Command lists for "set/show record btrace". */ |
177 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
178 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 179 | |
70ad5bff MM |
180 | /* The execution direction of the last resume we got. See record-full.c. */ |
181 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
182 | ||
183 | /* The async event handler for reverse/replay execution. */ | |
184 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
185 | ||
aef92902 MM |
186 | /* A flag indicating that we are currently generating a core file. */ |
187 | static int record_btrace_generating_corefile; | |
188 | ||
f4abbc16 MM |
189 | /* The current branch trace configuration. */ |
190 | static struct btrace_config record_btrace_conf; | |
191 | ||
192 | /* Command list for "record btrace". */ | |
193 | static struct cmd_list_element *record_btrace_cmdlist; | |
194 | ||
d33501a5 MM |
195 | /* Command lists for "set/show record btrace bts". */ |
196 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
197 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
198 | ||
b20a6524 MM |
199 | /* Command lists for "set/show record btrace pt". */ |
200 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
201 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
202 | ||
4a4495d6 MM |
203 | /* Command list for "set record btrace cpu". */ |
204 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
205 | ||
afedecd3 MM |
206 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
207 | ambiguities when used in if statements. */ | |
208 | ||
209 | #define DEBUG(msg, args...) \ | |
210 | do \ | |
211 | { \ | |
212 | if (record_debug != 0) \ | |
213 | fprintf_unfiltered (gdb_stdlog, \ | |
214 | "[record-btrace] " msg "\n", ##args); \ | |
215 | } \ | |
216 | while (0) | |
217 | ||
218 | ||
4a4495d6 MM |
219 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
220 | configured as auto. */ | |
221 | const struct btrace_cpu * | |
222 | record_btrace_get_cpu (void) | |
223 | { | |
224 | switch (record_btrace_cpu_state) | |
225 | { | |
226 | case CS_AUTO: | |
227 | return nullptr; | |
228 | ||
229 | case CS_NONE: | |
230 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
231 | /* Fall through. */ | |
232 | case CS_CPU: | |
233 | return &record_btrace_cpu; | |
234 | } | |
235 | ||
236 | error (_("Internal error: bad record btrace cpu state.")); | |
237 | } | |
238 | ||
afedecd3 | 239 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 240 | thread_info. |
afedecd3 MM |
241 | |
242 | Throws an error if there is no thread or no trace. This function never | |
243 | returns NULL. */ | |
244 | ||
066ce621 MM |
245 | static struct thread_info * |
246 | require_btrace_thread (void) | |
afedecd3 | 247 | { |
afedecd3 MM |
248 | DEBUG ("require"); |
249 | ||
00431a78 | 250 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
251 | error (_("No thread.")); |
252 | ||
00431a78 PA |
253 | thread_info *tp = inferior_thread (); |
254 | ||
cd4007e4 MM |
255 | validate_registers_access (); |
256 | ||
4a4495d6 | 257 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 258 | |
6e07b1d2 | 259 | if (btrace_is_empty (tp)) |
afedecd3 MM |
260 | error (_("No trace.")); |
261 | ||
066ce621 MM |
262 | return tp; |
263 | } | |
264 | ||
265 | /* Update the branch trace for the current thread and return a pointer to its | |
266 | branch trace information struct. | |
267 | ||
268 | Throws an error if there is no thread or no trace. This function never | |
269 | returns NULL. */ | |
270 | ||
271 | static struct btrace_thread_info * | |
272 | require_btrace (void) | |
273 | { | |
274 | struct thread_info *tp; | |
275 | ||
276 | tp = require_btrace_thread (); | |
277 | ||
278 | return &tp->btrace; | |
afedecd3 MM |
279 | } |
280 | ||
281 | /* Enable branch tracing for one thread. Warn on errors. */ | |
282 | ||
283 | static void | |
284 | record_btrace_enable_warn (struct thread_info *tp) | |
285 | { | |
a70b8144 | 286 | try |
492d29ea PA |
287 | { |
288 | btrace_enable (tp, &record_btrace_conf); | |
289 | } | |
230d2906 | 290 | catch (const gdb_exception_error &error) |
492d29ea | 291 | { |
3d6e9d23 | 292 | warning ("%s", error.what ()); |
492d29ea | 293 | } |
afedecd3 MM |
294 | } |
295 | ||
afedecd3 MM |
296 | /* Enable automatic tracing of new threads. */ |
297 | ||
298 | static void | |
299 | record_btrace_auto_enable (void) | |
300 | { | |
301 | DEBUG ("attach thread observer"); | |
302 | ||
76727919 TT |
303 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
304 | record_btrace_thread_observer_token); | |
afedecd3 MM |
305 | } |
306 | ||
307 | /* Disable automatic tracing of new threads. */ | |
308 | ||
309 | static void | |
310 | record_btrace_auto_disable (void) | |
311 | { | |
afedecd3 MM |
312 | DEBUG ("detach thread observer"); |
313 | ||
76727919 | 314 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
315 | } |
316 | ||
70ad5bff MM |
317 | /* The record-btrace async event handler function. */ |
318 | ||
319 | static void | |
320 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
321 | { | |
322 | inferior_event_handler (INF_REG_EVENT, NULL); | |
323 | } | |
324 | ||
c0272db5 TW |
325 | /* See record-btrace.h. */ |
326 | ||
327 | void | |
328 | record_btrace_push_target (void) | |
329 | { | |
330 | const char *format; | |
331 | ||
332 | record_btrace_auto_enable (); | |
333 | ||
334 | push_target (&record_btrace_ops); | |
335 | ||
336 | record_btrace_async_inferior_event_handler | |
337 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
338 | NULL); | |
339 | record_btrace_generating_corefile = 0; | |
340 | ||
341 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 342 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
343 | } |
344 | ||
228f1508 SM |
345 | /* Disable btrace on a set of threads on scope exit. */ |
346 | ||
347 | struct scoped_btrace_disable | |
348 | { | |
349 | scoped_btrace_disable () = default; | |
350 | ||
351 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
352 | ||
353 | ~scoped_btrace_disable () | |
354 | { | |
355 | for (thread_info *tp : m_threads) | |
356 | btrace_disable (tp); | |
357 | } | |
358 | ||
359 | void add_thread (thread_info *thread) | |
360 | { | |
361 | m_threads.push_front (thread); | |
362 | } | |
363 | ||
364 | void discard () | |
365 | { | |
366 | m_threads.clear (); | |
367 | } | |
368 | ||
369 | private: | |
370 | std::forward_list<thread_info *> m_threads; | |
371 | }; | |
372 | ||
d9f719f1 | 373 | /* Open target record-btrace. */ |
afedecd3 | 374 | |
d9f719f1 PA |
375 | static void |
376 | record_btrace_target_open (const char *args, int from_tty) | |
afedecd3 | 377 | { |
228f1508 SM |
378 | /* If we fail to enable btrace for one thread, disable it for the threads for |
379 | which it was successfully enabled. */ | |
380 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
381 | |
382 | DEBUG ("open"); | |
383 | ||
8213266a | 384 | record_preopen (); |
afedecd3 MM |
385 | |
386 | if (!target_has_execution) | |
387 | error (_("The program is not being run.")); | |
388 | ||
08036331 | 389 | for (thread_info *tp : all_non_exited_threads ()) |
5d5658a1 | 390 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 391 | { |
f4abbc16 | 392 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 393 | |
228f1508 | 394 | btrace_disable.add_thread (tp); |
afedecd3 MM |
395 | } |
396 | ||
c0272db5 | 397 | record_btrace_push_target (); |
afedecd3 | 398 | |
228f1508 | 399 | btrace_disable.discard (); |
afedecd3 MM |
400 | } |
401 | ||
f6ac5f3d | 402 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 403 | |
f6ac5f3d PA |
404 | void |
405 | record_btrace_target::stop_recording () | |
afedecd3 | 406 | { |
afedecd3 MM |
407 | DEBUG ("stop recording"); |
408 | ||
409 | record_btrace_auto_disable (); | |
410 | ||
08036331 | 411 | for (thread_info *tp : all_non_exited_threads ()) |
afedecd3 MM |
412 | if (tp->btrace.target != NULL) |
413 | btrace_disable (tp); | |
414 | } | |
415 | ||
f6ac5f3d | 416 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 417 | |
f6ac5f3d PA |
418 | void |
419 | record_btrace_target::disconnect (const char *args, | |
420 | int from_tty) | |
c0272db5 | 421 | { |
b6a8c27b | 422 | struct target_ops *beneath = this->beneath (); |
c0272db5 TW |
423 | |
424 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 425 | unpush_target (this); |
c0272db5 TW |
426 | |
427 | /* Forward disconnect. */ | |
f6ac5f3d | 428 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
429 | } |
430 | ||
f6ac5f3d | 431 | /* The close method of target record-btrace. */ |
afedecd3 | 432 | |
f6ac5f3d PA |
433 | void |
434 | record_btrace_target::close () | |
afedecd3 | 435 | { |
70ad5bff MM |
436 | if (record_btrace_async_inferior_event_handler != NULL) |
437 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
438 | ||
99c819ee MM |
439 | /* Make sure automatic recording gets disabled even if we did not stop |
440 | recording before closing the record-btrace target. */ | |
441 | record_btrace_auto_disable (); | |
442 | ||
568e808b MM |
443 | /* We should have already stopped recording. |
444 | Tear down btrace in case we have not. */ | |
08036331 | 445 | for (thread_info *tp : all_non_exited_threads ()) |
568e808b | 446 | btrace_teardown (tp); |
afedecd3 MM |
447 | } |
448 | ||
f6ac5f3d | 449 | /* The async method of target record-btrace. */ |
b7d2e916 | 450 | |
f6ac5f3d PA |
451 | void |
452 | record_btrace_target::async (int enable) | |
b7d2e916 | 453 | { |
6a3753b3 | 454 | if (enable) |
b7d2e916 PA |
455 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
456 | else | |
457 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
458 | ||
b6a8c27b | 459 | this->beneath ()->async (enable); |
b7d2e916 PA |
460 | } |
461 | ||
d33501a5 MM |
462 | /* Adjusts the size and returns a human readable size suffix. */ |
463 | ||
464 | static const char * | |
465 | record_btrace_adjust_size (unsigned int *size) | |
466 | { | |
467 | unsigned int sz; | |
468 | ||
469 | sz = *size; | |
470 | ||
471 | if ((sz & ((1u << 30) - 1)) == 0) | |
472 | { | |
473 | *size = sz >> 30; | |
474 | return "GB"; | |
475 | } | |
476 | else if ((sz & ((1u << 20) - 1)) == 0) | |
477 | { | |
478 | *size = sz >> 20; | |
479 | return "MB"; | |
480 | } | |
481 | else if ((sz & ((1u << 10) - 1)) == 0) | |
482 | { | |
483 | *size = sz >> 10; | |
484 | return "kB"; | |
485 | } | |
486 | else | |
487 | return ""; | |
488 | } | |
489 | ||
490 | /* Print a BTS configuration. */ | |
491 | ||
492 | static void | |
493 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
494 | { | |
495 | const char *suffix; | |
496 | unsigned int size; | |
497 | ||
498 | size = conf->size; | |
499 | if (size > 0) | |
500 | { | |
501 | suffix = record_btrace_adjust_size (&size); | |
502 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
503 | } | |
504 | } | |
505 | ||
bc504a31 | 506 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
507 | |
508 | static void | |
509 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
510 | { | |
511 | const char *suffix; | |
512 | unsigned int size; | |
513 | ||
514 | size = conf->size; | |
515 | if (size > 0) | |
516 | { | |
517 | suffix = record_btrace_adjust_size (&size); | |
518 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
519 | } | |
520 | } | |
521 | ||
d33501a5 MM |
522 | /* Print a branch tracing configuration. */ |
523 | ||
524 | static void | |
525 | record_btrace_print_conf (const struct btrace_config *conf) | |
526 | { | |
527 | printf_unfiltered (_("Recording format: %s.\n"), | |
528 | btrace_format_string (conf->format)); | |
529 | ||
530 | switch (conf->format) | |
531 | { | |
532 | case BTRACE_FORMAT_NONE: | |
533 | return; | |
534 | ||
535 | case BTRACE_FORMAT_BTS: | |
536 | record_btrace_print_bts_conf (&conf->bts); | |
537 | return; | |
b20a6524 MM |
538 | |
539 | case BTRACE_FORMAT_PT: | |
540 | record_btrace_print_pt_conf (&conf->pt); | |
541 | return; | |
d33501a5 MM |
542 | } |
543 | ||
544 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); | |
545 | } | |
546 | ||
f6ac5f3d | 547 | /* The info_record method of target record-btrace. */ |
afedecd3 | 548 | |
f6ac5f3d PA |
549 | void |
550 | record_btrace_target::info_record () | |
afedecd3 MM |
551 | { |
552 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 553 | const struct btrace_config *conf; |
afedecd3 | 554 | struct thread_info *tp; |
31fd9caa | 555 | unsigned int insns, calls, gaps; |
afedecd3 MM |
556 | |
557 | DEBUG ("info"); | |
558 | ||
559 | tp = find_thread_ptid (inferior_ptid); | |
560 | if (tp == NULL) | |
561 | error (_("No thread.")); | |
562 | ||
cd4007e4 MM |
563 | validate_registers_access (); |
564 | ||
f4abbc16 MM |
565 | btinfo = &tp->btrace; |
566 | ||
f6ac5f3d | 567 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 568 | if (conf != NULL) |
d33501a5 | 569 | record_btrace_print_conf (conf); |
f4abbc16 | 570 | |
4a4495d6 | 571 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 572 | |
23a7fe75 MM |
573 | insns = 0; |
574 | calls = 0; | |
31fd9caa | 575 | gaps = 0; |
23a7fe75 | 576 | |
6e07b1d2 | 577 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
578 | { |
579 | struct btrace_call_iterator call; | |
580 | struct btrace_insn_iterator insn; | |
581 | ||
582 | btrace_call_end (&call, btinfo); | |
583 | btrace_call_prev (&call, 1); | |
5de9129b | 584 | calls = btrace_call_number (&call); |
23a7fe75 MM |
585 | |
586 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 587 | insns = btrace_insn_number (&insn); |
31fd9caa | 588 | |
69090cee TW |
589 | /* If the last instruction is not a gap, it is the current instruction |
590 | that is not actually part of the record. */ | |
591 | if (btrace_insn_get (&insn) != NULL) | |
592 | insns -= 1; | |
31fd9caa MM |
593 | |
594 | gaps = btinfo->ngaps; | |
23a7fe75 | 595 | } |
afedecd3 | 596 | |
31fd9caa | 597 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 | 598 | "for thread %s (%s).\n"), insns, calls, gaps, |
a068643d TT |
599 | print_thread_id (tp), |
600 | target_pid_to_str (tp->ptid).c_str ()); | |
07bbe694 MM |
601 | |
602 | if (btrace_is_replaying (tp)) | |
603 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
604 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
605 | } |
606 | ||
31fd9caa MM |
607 | /* Print a decode error. */ |
608 | ||
609 | static void | |
610 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
611 | enum btrace_format format) | |
612 | { | |
508352a9 | 613 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 614 | |
112e8700 | 615 | uiout->text (_("[")); |
508352a9 TW |
616 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
617 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 618 | { |
112e8700 | 619 | uiout->text (_("decode error (")); |
381befee | 620 | uiout->field_signed ("errcode", errcode); |
112e8700 | 621 | uiout->text (_("): ")); |
31fd9caa | 622 | } |
112e8700 SM |
623 | uiout->text (errstr); |
624 | uiout->text (_("]\n")); | |
31fd9caa MM |
625 | } |
626 | ||
f94cc897 MM |
627 | /* A range of source lines. */ |
628 | ||
629 | struct btrace_line_range | |
630 | { | |
631 | /* The symtab this line is from. */ | |
632 | struct symtab *symtab; | |
633 | ||
634 | /* The first line (inclusive). */ | |
635 | int begin; | |
636 | ||
637 | /* The last line (exclusive). */ | |
638 | int end; | |
639 | }; | |
640 | ||
641 | /* Construct a line range. */ | |
642 | ||
643 | static struct btrace_line_range | |
644 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
645 | { | |
646 | struct btrace_line_range range; | |
647 | ||
648 | range.symtab = symtab; | |
649 | range.begin = begin; | |
650 | range.end = end; | |
651 | ||
652 | return range; | |
653 | } | |
654 | ||
655 | /* Add a line to a line range. */ | |
656 | ||
657 | static struct btrace_line_range | |
658 | btrace_line_range_add (struct btrace_line_range range, int line) | |
659 | { | |
660 | if (range.end <= range.begin) | |
661 | { | |
662 | /* This is the first entry. */ | |
663 | range.begin = line; | |
664 | range.end = line + 1; | |
665 | } | |
666 | else if (line < range.begin) | |
667 | range.begin = line; | |
668 | else if (range.end < line) | |
669 | range.end = line; | |
670 | ||
671 | return range; | |
672 | } | |
673 | ||
674 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
675 | ||
676 | static int | |
677 | btrace_line_range_is_empty (struct btrace_line_range range) | |
678 | { | |
679 | return range.end <= range.begin; | |
680 | } | |
681 | ||
682 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
683 | ||
684 | static int | |
685 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
686 | struct btrace_line_range rhs) | |
687 | { | |
688 | return ((lhs.symtab == rhs.symtab) | |
689 | && (lhs.begin <= rhs.begin) | |
690 | && (rhs.end <= lhs.end)); | |
691 | } | |
692 | ||
693 | /* Find the line range associated with PC. */ | |
694 | ||
695 | static struct btrace_line_range | |
696 | btrace_find_line_range (CORE_ADDR pc) | |
697 | { | |
698 | struct btrace_line_range range; | |
699 | struct linetable_entry *lines; | |
700 | struct linetable *ltable; | |
701 | struct symtab *symtab; | |
702 | int nlines, i; | |
703 | ||
704 | symtab = find_pc_line_symtab (pc); | |
705 | if (symtab == NULL) | |
706 | return btrace_mk_line_range (NULL, 0, 0); | |
707 | ||
708 | ltable = SYMTAB_LINETABLE (symtab); | |
709 | if (ltable == NULL) | |
710 | return btrace_mk_line_range (symtab, 0, 0); | |
711 | ||
712 | nlines = ltable->nitems; | |
713 | lines = ltable->item; | |
714 | if (nlines <= 0) | |
715 | return btrace_mk_line_range (symtab, 0, 0); | |
716 | ||
717 | range = btrace_mk_line_range (symtab, 0, 0); | |
718 | for (i = 0; i < nlines - 1; i++) | |
719 | { | |
720 | if ((lines[i].pc == pc) && (lines[i].line != 0)) | |
721 | range = btrace_line_range_add (range, lines[i].line); | |
722 | } | |
723 | ||
724 | return range; | |
725 | } | |
726 | ||
727 | /* Print source lines in LINES to UIOUT. | |
728 | ||
729 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
730 | instructions corresponding to that source line. When printing a new source | |
731 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
732 | the new source line. If the source line range in LINES is not empty, this | |
733 | function will leave the cleanup chain for the last printed source line open | |
734 | so instructions can be added to it. */ | |
735 | ||
736 | static void | |
737 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
738 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
739 | gdb::optional<ui_out_emit_list> *asm_list, | |
740 | gdb_disassembly_flags flags) | |
f94cc897 | 741 | { |
8d297bbf | 742 | print_source_lines_flags psl_flags; |
f94cc897 | 743 | |
f94cc897 MM |
744 | if (flags & DISASSEMBLY_FILENAME) |
745 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
746 | ||
7ea78b59 | 747 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 748 | { |
7ea78b59 | 749 | asm_list->reset (); |
f94cc897 | 750 | |
7ea78b59 | 751 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
752 | |
753 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
754 | ||
7ea78b59 | 755 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
756 | } |
757 | } | |
758 | ||
afedecd3 MM |
759 | /* Disassemble a section of the recorded instruction trace. */ |
760 | ||
761 | static void | |
23a7fe75 | 762 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 763 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 764 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
765 | const struct btrace_insn_iterator *end, |
766 | gdb_disassembly_flags flags) | |
afedecd3 | 767 | { |
9a24775b PA |
768 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
769 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 770 | |
f94cc897 MM |
771 | flags |= DISASSEMBLY_SPECULATIVE; |
772 | ||
7ea78b59 SM |
773 | struct gdbarch *gdbarch = target_gdbarch (); |
774 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 775 | |
7ea78b59 | 776 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 777 | |
7ea78b59 SM |
778 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
779 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 780 | |
046bebe1 | 781 | gdb_pretty_print_disassembler disasm (gdbarch, uiout); |
8b172ce7 | 782 | |
7ea78b59 SM |
783 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
784 | btrace_insn_next (&it, 1)) | |
afedecd3 | 785 | { |
23a7fe75 MM |
786 | const struct btrace_insn *insn; |
787 | ||
788 | insn = btrace_insn_get (&it); | |
789 | ||
31fd9caa MM |
790 | /* A NULL instruction indicates a gap in the trace. */ |
791 | if (insn == NULL) | |
792 | { | |
793 | const struct btrace_config *conf; | |
794 | ||
795 | conf = btrace_conf (btinfo); | |
afedecd3 | 796 | |
31fd9caa MM |
797 | /* We have trace so we must have a configuration. */ |
798 | gdb_assert (conf != NULL); | |
799 | ||
69090cee TW |
800 | uiout->field_fmt ("insn-number", "%u", |
801 | btrace_insn_number (&it)); | |
802 | uiout->text ("\t"); | |
803 | ||
804 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
805 | conf->format); |
806 | } | |
807 | else | |
808 | { | |
f94cc897 | 809 | struct disasm_insn dinsn; |
da8c46d2 | 810 | |
f94cc897 | 811 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 812 | { |
f94cc897 MM |
813 | struct btrace_line_range lines; |
814 | ||
815 | lines = btrace_find_line_range (insn->pc); | |
816 | if (!btrace_line_range_is_empty (lines) | |
817 | && !btrace_line_range_contains_range (last_lines, lines)) | |
818 | { | |
7ea78b59 SM |
819 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
820 | flags); | |
f94cc897 MM |
821 | last_lines = lines; |
822 | } | |
7ea78b59 | 823 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 824 | { |
7ea78b59 SM |
825 | gdb_assert (!asm_list.has_value ()); |
826 | ||
827 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
828 | ||
f94cc897 | 829 | /* No source information. */ |
7ea78b59 | 830 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
831 | } |
832 | ||
7ea78b59 SM |
833 | gdb_assert (src_and_asm_tuple.has_value ()); |
834 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 835 | } |
da8c46d2 | 836 | |
f94cc897 MM |
837 | memset (&dinsn, 0, sizeof (dinsn)); |
838 | dinsn.number = btrace_insn_number (&it); | |
839 | dinsn.addr = insn->pc; | |
31fd9caa | 840 | |
da8c46d2 | 841 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 842 | dinsn.is_speculative = 1; |
da8c46d2 | 843 | |
046bebe1 | 844 | disasm.pretty_print_insn (&dinsn, flags); |
31fd9caa | 845 | } |
afedecd3 MM |
846 | } |
847 | } | |
848 | ||
f6ac5f3d | 849 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 850 | |
f6ac5f3d PA |
851 | void |
852 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
853 | { |
854 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
855 | struct btrace_insn_history *history; |
856 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 857 | struct ui_out *uiout; |
23a7fe75 | 858 | unsigned int context, covered; |
afedecd3 MM |
859 | |
860 | uiout = current_uiout; | |
2e783024 | 861 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 862 | context = abs (size); |
afedecd3 MM |
863 | if (context == 0) |
864 | error (_("Bad record instruction-history-size.")); | |
865 | ||
23a7fe75 MM |
866 | btinfo = require_btrace (); |
867 | history = btinfo->insn_history; | |
868 | if (history == NULL) | |
afedecd3 | 869 | { |
07bbe694 | 870 | struct btrace_insn_iterator *replay; |
afedecd3 | 871 | |
9a24775b | 872 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 873 | |
07bbe694 MM |
874 | /* If we're replaying, we start at the replay position. Otherwise, we |
875 | start at the tail of the trace. */ | |
876 | replay = btinfo->replay; | |
877 | if (replay != NULL) | |
878 | begin = *replay; | |
879 | else | |
880 | btrace_insn_end (&begin, btinfo); | |
881 | ||
882 | /* We start from here and expand in the requested direction. Then we | |
883 | expand in the other direction, as well, to fill up any remaining | |
884 | context. */ | |
885 | end = begin; | |
886 | if (size < 0) | |
887 | { | |
888 | /* We want the current position covered, as well. */ | |
889 | covered = btrace_insn_next (&end, 1); | |
890 | covered += btrace_insn_prev (&begin, context - covered); | |
891 | covered += btrace_insn_next (&end, context - covered); | |
892 | } | |
893 | else | |
894 | { | |
895 | covered = btrace_insn_next (&end, context); | |
896 | covered += btrace_insn_prev (&begin, context - covered); | |
897 | } | |
afedecd3 MM |
898 | } |
899 | else | |
900 | { | |
23a7fe75 MM |
901 | begin = history->begin; |
902 | end = history->end; | |
afedecd3 | 903 | |
9a24775b | 904 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 905 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 906 | |
23a7fe75 MM |
907 | if (size < 0) |
908 | { | |
909 | end = begin; | |
910 | covered = btrace_insn_prev (&begin, context); | |
911 | } | |
912 | else | |
913 | { | |
914 | begin = end; | |
915 | covered = btrace_insn_next (&end, context); | |
916 | } | |
afedecd3 MM |
917 | } |
918 | ||
23a7fe75 | 919 | if (covered > 0) |
31fd9caa | 920 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
921 | else |
922 | { | |
923 | if (size < 0) | |
924 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
925 | else | |
926 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
927 | } | |
afedecd3 | 928 | |
23a7fe75 | 929 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
930 | } |
931 | ||
f6ac5f3d | 932 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 933 | |
f6ac5f3d PA |
934 | void |
935 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
936 | gdb_disassembly_flags flags) | |
afedecd3 MM |
937 | { |
938 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 939 | struct btrace_insn_iterator begin, end; |
afedecd3 | 940 | struct ui_out *uiout; |
23a7fe75 MM |
941 | unsigned int low, high; |
942 | int found; | |
afedecd3 MM |
943 | |
944 | uiout = current_uiout; | |
2e783024 | 945 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
946 | low = from; |
947 | high = to; | |
afedecd3 | 948 | |
9a24775b | 949 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
950 | |
951 | /* Check for wrap-arounds. */ | |
23a7fe75 | 952 | if (low != from || high != to) |
afedecd3 MM |
953 | error (_("Bad range.")); |
954 | ||
0688d04e | 955 | if (high < low) |
afedecd3 MM |
956 | error (_("Bad range.")); |
957 | ||
23a7fe75 | 958 | btinfo = require_btrace (); |
afedecd3 | 959 | |
23a7fe75 MM |
960 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
961 | if (found == 0) | |
962 | error (_("Range out of bounds.")); | |
afedecd3 | 963 | |
23a7fe75 MM |
964 | found = btrace_find_insn_by_number (&end, btinfo, high); |
965 | if (found == 0) | |
0688d04e MM |
966 | { |
967 | /* Silently truncate the range. */ | |
968 | btrace_insn_end (&end, btinfo); | |
969 | } | |
970 | else | |
971 | { | |
972 | /* We want both begin and end to be inclusive. */ | |
973 | btrace_insn_next (&end, 1); | |
974 | } | |
afedecd3 | 975 | |
31fd9caa | 976 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 977 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
978 | } |
979 | ||
f6ac5f3d | 980 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 981 | |
f6ac5f3d PA |
982 | void |
983 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
984 | gdb_disassembly_flags flags) | |
afedecd3 MM |
985 | { |
986 | ULONGEST begin, end, context; | |
987 | ||
988 | context = abs (size); | |
0688d04e MM |
989 | if (context == 0) |
990 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
991 | |
992 | if (size < 0) | |
993 | { | |
994 | end = from; | |
995 | ||
996 | if (from < context) | |
997 | begin = 0; | |
998 | else | |
0688d04e | 999 | begin = from - context + 1; |
afedecd3 MM |
1000 | } |
1001 | else | |
1002 | { | |
1003 | begin = from; | |
0688d04e | 1004 | end = from + context - 1; |
afedecd3 MM |
1005 | |
1006 | /* Check for wrap-around. */ | |
1007 | if (end < begin) | |
1008 | end = ULONGEST_MAX; | |
1009 | } | |
1010 | ||
f6ac5f3d | 1011 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1012 | } |
1013 | ||
1014 | /* Print the instruction number range for a function call history line. */ | |
1015 | ||
1016 | static void | |
23a7fe75 MM |
1017 | btrace_call_history_insn_range (struct ui_out *uiout, |
1018 | const struct btrace_function *bfun) | |
afedecd3 | 1019 | { |
7acbe133 MM |
1020 | unsigned int begin, end, size; |
1021 | ||
0860c437 | 1022 | size = bfun->insn.size (); |
7acbe133 | 1023 | gdb_assert (size > 0); |
afedecd3 | 1024 | |
23a7fe75 | 1025 | begin = bfun->insn_offset; |
7acbe133 | 1026 | end = begin + size - 1; |
afedecd3 | 1027 | |
1f77b012 | 1028 | uiout->field_unsigned ("insn begin", begin); |
112e8700 | 1029 | uiout->text (","); |
1f77b012 | 1030 | uiout->field_unsigned ("insn end", end); |
afedecd3 MM |
1031 | } |
1032 | ||
ce0dfbea MM |
1033 | /* Compute the lowest and highest source line for the instructions in BFUN |
1034 | and return them in PBEGIN and PEND. | |
1035 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1036 | result from inlining or macro expansion. */ | |
1037 | ||
1038 | static void | |
1039 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1040 | int *pbegin, int *pend) | |
1041 | { | |
ce0dfbea MM |
1042 | struct symtab *symtab; |
1043 | struct symbol *sym; | |
ce0dfbea MM |
1044 | int begin, end; |
1045 | ||
1046 | begin = INT_MAX; | |
1047 | end = INT_MIN; | |
1048 | ||
1049 | sym = bfun->sym; | |
1050 | if (sym == NULL) | |
1051 | goto out; | |
1052 | ||
1053 | symtab = symbol_symtab (sym); | |
1054 | ||
0860c437 | 1055 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1056 | { |
1057 | struct symtab_and_line sal; | |
1058 | ||
0860c437 | 1059 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1060 | if (sal.symtab != symtab || sal.line == 0) |
1061 | continue; | |
1062 | ||
325fac50 PA |
1063 | begin = std::min (begin, sal.line); |
1064 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1065 | } |
1066 | ||
1067 | out: | |
1068 | *pbegin = begin; | |
1069 | *pend = end; | |
1070 | } | |
1071 | ||
afedecd3 MM |
1072 | /* Print the source line information for a function call history line. */ |
1073 | ||
1074 | static void | |
23a7fe75 MM |
1075 | btrace_call_history_src_line (struct ui_out *uiout, |
1076 | const struct btrace_function *bfun) | |
afedecd3 MM |
1077 | { |
1078 | struct symbol *sym; | |
23a7fe75 | 1079 | int begin, end; |
afedecd3 MM |
1080 | |
1081 | sym = bfun->sym; | |
1082 | if (sym == NULL) | |
1083 | return; | |
1084 | ||
112e8700 | 1085 | uiout->field_string ("file", |
cbe56571 | 1086 | symtab_to_filename_for_display (symbol_symtab (sym)), |
e43b10e1 | 1087 | file_name_style.style ()); |
afedecd3 | 1088 | |
ce0dfbea | 1089 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1090 | if (end < begin) |
afedecd3 MM |
1091 | return; |
1092 | ||
112e8700 | 1093 | uiout->text (":"); |
381befee | 1094 | uiout->field_signed ("min line", begin); |
afedecd3 | 1095 | |
23a7fe75 | 1096 | if (end == begin) |
afedecd3 MM |
1097 | return; |
1098 | ||
112e8700 | 1099 | uiout->text (","); |
381befee | 1100 | uiout->field_signed ("max line", end); |
afedecd3 MM |
1101 | } |
1102 | ||
0b722aec MM |
1103 | /* Get the name of a branch trace function. */ |
1104 | ||
1105 | static const char * | |
1106 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1107 | { | |
1108 | struct minimal_symbol *msym; | |
1109 | struct symbol *sym; | |
1110 | ||
1111 | if (bfun == NULL) | |
1112 | return "??"; | |
1113 | ||
1114 | msym = bfun->msym; | |
1115 | sym = bfun->sym; | |
1116 | ||
1117 | if (sym != NULL) | |
987012b8 | 1118 | return sym->print_name (); |
0b722aec | 1119 | else if (msym != NULL) |
c9d95fa3 | 1120 | return msym->print_name (); |
0b722aec MM |
1121 | else |
1122 | return "??"; | |
1123 | } | |
1124 | ||
afedecd3 MM |
1125 | /* Disassemble a section of the recorded function trace. */ |
1126 | ||
1127 | static void | |
23a7fe75 | 1128 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1129 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1130 | const struct btrace_call_iterator *begin, |
1131 | const struct btrace_call_iterator *end, | |
8d297bbf | 1132 | int int_flags) |
afedecd3 | 1133 | { |
23a7fe75 | 1134 | struct btrace_call_iterator it; |
8d297bbf | 1135 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1136 | |
8d297bbf | 1137 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1138 | btrace_call_number (end)); |
afedecd3 | 1139 | |
23a7fe75 | 1140 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1141 | { |
23a7fe75 MM |
1142 | const struct btrace_function *bfun; |
1143 | struct minimal_symbol *msym; | |
1144 | struct symbol *sym; | |
1145 | ||
1146 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1147 | sym = bfun->sym; |
0b722aec | 1148 | msym = bfun->msym; |
23a7fe75 | 1149 | |
afedecd3 | 1150 | /* Print the function index. */ |
1f77b012 | 1151 | uiout->field_unsigned ("index", bfun->number); |
112e8700 | 1152 | uiout->text ("\t"); |
afedecd3 | 1153 | |
31fd9caa MM |
1154 | /* Indicate gaps in the trace. */ |
1155 | if (bfun->errcode != 0) | |
1156 | { | |
1157 | const struct btrace_config *conf; | |
1158 | ||
1159 | conf = btrace_conf (btinfo); | |
1160 | ||
1161 | /* We have trace so we must have a configuration. */ | |
1162 | gdb_assert (conf != NULL); | |
1163 | ||
1164 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1165 | ||
1166 | continue; | |
1167 | } | |
1168 | ||
8710b709 MM |
1169 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1170 | { | |
1171 | int level = bfun->level + btinfo->level, i; | |
1172 | ||
1173 | for (i = 0; i < level; ++i) | |
112e8700 | 1174 | uiout->text (" "); |
8710b709 MM |
1175 | } |
1176 | ||
1177 | if (sym != NULL) | |
987012b8 | 1178 | uiout->field_string ("function", sym->print_name (), |
e43b10e1 | 1179 | function_name_style.style ()); |
8710b709 | 1180 | else if (msym != NULL) |
c9d95fa3 | 1181 | uiout->field_string ("function", msym->print_name (), |
e43b10e1 | 1182 | function_name_style.style ()); |
112e8700 | 1183 | else if (!uiout->is_mi_like_p ()) |
cbe56571 | 1184 | uiout->field_string ("function", "??", |
e43b10e1 | 1185 | function_name_style.style ()); |
8710b709 | 1186 | |
1e038f67 | 1187 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1188 | { |
112e8700 | 1189 | uiout->text (_("\tinst ")); |
23a7fe75 | 1190 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1191 | } |
1192 | ||
1e038f67 | 1193 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1194 | { |
112e8700 | 1195 | uiout->text (_("\tat ")); |
23a7fe75 | 1196 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1197 | } |
1198 | ||
112e8700 | 1199 | uiout->text ("\n"); |
afedecd3 MM |
1200 | } |
1201 | } | |
1202 | ||
f6ac5f3d | 1203 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1204 | |
f6ac5f3d PA |
1205 | void |
1206 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1207 | { |
1208 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1209 | struct btrace_call_history *history; |
1210 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1211 | struct ui_out *uiout; |
23a7fe75 | 1212 | unsigned int context, covered; |
afedecd3 MM |
1213 | |
1214 | uiout = current_uiout; | |
2e783024 | 1215 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1216 | context = abs (size); |
afedecd3 MM |
1217 | if (context == 0) |
1218 | error (_("Bad record function-call-history-size.")); | |
1219 | ||
23a7fe75 MM |
1220 | btinfo = require_btrace (); |
1221 | history = btinfo->call_history; | |
1222 | if (history == NULL) | |
afedecd3 | 1223 | { |
07bbe694 | 1224 | struct btrace_insn_iterator *replay; |
afedecd3 | 1225 | |
0cb7c7b0 | 1226 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1227 | |
07bbe694 MM |
1228 | /* If we're replaying, we start at the replay position. Otherwise, we |
1229 | start at the tail of the trace. */ | |
1230 | replay = btinfo->replay; | |
1231 | if (replay != NULL) | |
1232 | { | |
07bbe694 | 1233 | begin.btinfo = btinfo; |
a0f1b963 | 1234 | begin.index = replay->call_index; |
07bbe694 MM |
1235 | } |
1236 | else | |
1237 | btrace_call_end (&begin, btinfo); | |
1238 | ||
1239 | /* We start from here and expand in the requested direction. Then we | |
1240 | expand in the other direction, as well, to fill up any remaining | |
1241 | context. */ | |
1242 | end = begin; | |
1243 | if (size < 0) | |
1244 | { | |
1245 | /* We want the current position covered, as well. */ | |
1246 | covered = btrace_call_next (&end, 1); | |
1247 | covered += btrace_call_prev (&begin, context - covered); | |
1248 | covered += btrace_call_next (&end, context - covered); | |
1249 | } | |
1250 | else | |
1251 | { | |
1252 | covered = btrace_call_next (&end, context); | |
1253 | covered += btrace_call_prev (&begin, context- covered); | |
1254 | } | |
afedecd3 MM |
1255 | } |
1256 | else | |
1257 | { | |
23a7fe75 MM |
1258 | begin = history->begin; |
1259 | end = history->end; | |
afedecd3 | 1260 | |
0cb7c7b0 | 1261 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1262 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1263 | |
23a7fe75 MM |
1264 | if (size < 0) |
1265 | { | |
1266 | end = begin; | |
1267 | covered = btrace_call_prev (&begin, context); | |
1268 | } | |
1269 | else | |
1270 | { | |
1271 | begin = end; | |
1272 | covered = btrace_call_next (&end, context); | |
1273 | } | |
afedecd3 MM |
1274 | } |
1275 | ||
23a7fe75 | 1276 | if (covered > 0) |
8710b709 | 1277 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1278 | else |
1279 | { | |
1280 | if (size < 0) | |
1281 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1282 | else | |
1283 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1284 | } | |
afedecd3 | 1285 | |
23a7fe75 | 1286 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1287 | } |
1288 | ||
f6ac5f3d | 1289 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1290 | |
f6ac5f3d PA |
1291 | void |
1292 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1293 | record_print_flags flags) | |
afedecd3 MM |
1294 | { |
1295 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1296 | struct btrace_call_iterator begin, end; |
afedecd3 | 1297 | struct ui_out *uiout; |
23a7fe75 MM |
1298 | unsigned int low, high; |
1299 | int found; | |
afedecd3 MM |
1300 | |
1301 | uiout = current_uiout; | |
2e783024 | 1302 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1303 | low = from; |
1304 | high = to; | |
afedecd3 | 1305 | |
0cb7c7b0 | 1306 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1307 | |
1308 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1309 | if (low != from || high != to) |
afedecd3 MM |
1310 | error (_("Bad range.")); |
1311 | ||
0688d04e | 1312 | if (high < low) |
afedecd3 MM |
1313 | error (_("Bad range.")); |
1314 | ||
23a7fe75 | 1315 | btinfo = require_btrace (); |
afedecd3 | 1316 | |
23a7fe75 MM |
1317 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1318 | if (found == 0) | |
1319 | error (_("Range out of bounds.")); | |
afedecd3 | 1320 | |
23a7fe75 MM |
1321 | found = btrace_find_call_by_number (&end, btinfo, high); |
1322 | if (found == 0) | |
0688d04e MM |
1323 | { |
1324 | /* Silently truncate the range. */ | |
1325 | btrace_call_end (&end, btinfo); | |
1326 | } | |
1327 | else | |
1328 | { | |
1329 | /* We want both begin and end to be inclusive. */ | |
1330 | btrace_call_next (&end, 1); | |
1331 | } | |
afedecd3 | 1332 | |
8710b709 | 1333 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1334 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1335 | } |
1336 | ||
f6ac5f3d | 1337 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1338 | |
f6ac5f3d PA |
1339 | void |
1340 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1341 | record_print_flags flags) | |
afedecd3 MM |
1342 | { |
1343 | ULONGEST begin, end, context; | |
1344 | ||
1345 | context = abs (size); | |
0688d04e MM |
1346 | if (context == 0) |
1347 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1348 | |
1349 | if (size < 0) | |
1350 | { | |
1351 | end = from; | |
1352 | ||
1353 | if (from < context) | |
1354 | begin = 0; | |
1355 | else | |
0688d04e | 1356 | begin = from - context + 1; |
afedecd3 MM |
1357 | } |
1358 | else | |
1359 | { | |
1360 | begin = from; | |
0688d04e | 1361 | end = from + context - 1; |
afedecd3 MM |
1362 | |
1363 | /* Check for wrap-around. */ | |
1364 | if (end < begin) | |
1365 | end = ULONGEST_MAX; | |
1366 | } | |
1367 | ||
f6ac5f3d | 1368 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1369 | } |
1370 | ||
f6ac5f3d | 1371 | /* The record_method method of target record-btrace. */ |
b158a20f | 1372 | |
f6ac5f3d PA |
1373 | enum record_method |
1374 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1375 | { |
b158a20f TW |
1376 | struct thread_info * const tp = find_thread_ptid (ptid); |
1377 | ||
1378 | if (tp == NULL) | |
1379 | error (_("No thread.")); | |
1380 | ||
1381 | if (tp->btrace.target == NULL) | |
1382 | return RECORD_METHOD_NONE; | |
1383 | ||
1384 | return RECORD_METHOD_BTRACE; | |
1385 | } | |
1386 | ||
f6ac5f3d | 1387 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1388 | |
57810aa7 | 1389 | bool |
f6ac5f3d | 1390 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 | 1391 | { |
08036331 PA |
1392 | for (thread_info *tp : all_non_exited_threads (ptid)) |
1393 | if (btrace_is_replaying (tp)) | |
57810aa7 | 1394 | return true; |
07bbe694 | 1395 | |
57810aa7 | 1396 | return false; |
07bbe694 MM |
1397 | } |
1398 | ||
f6ac5f3d | 1399 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1400 | |
57810aa7 | 1401 | bool |
f6ac5f3d | 1402 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1403 | { |
f6ac5f3d | 1404 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1405 | } |
1406 | ||
f6ac5f3d | 1407 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1408 | |
f6ac5f3d PA |
1409 | enum target_xfer_status |
1410 | record_btrace_target::xfer_partial (enum target_object object, | |
1411 | const char *annex, gdb_byte *readbuf, | |
1412 | const gdb_byte *writebuf, ULONGEST offset, | |
1413 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1414 | { |
633785ff | 1415 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1416 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1417 | && !record_btrace_generating_corefile |
f6ac5f3d | 1418 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1419 | { |
1420 | switch (object) | |
1421 | { | |
1422 | case TARGET_OBJECT_MEMORY: | |
1423 | { | |
1424 | struct target_section *section; | |
1425 | ||
1426 | /* We do not allow writing memory in general. */ | |
1427 | if (writebuf != NULL) | |
9b409511 YQ |
1428 | { |
1429 | *xfered_len = len; | |
bc113b4e | 1430 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1431 | } |
633785ff MM |
1432 | |
1433 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1434 | section = target_section_by_addr (this, offset); |
633785ff MM |
1435 | if (section != NULL) |
1436 | { | |
1437 | /* Check if the section we found is readonly. */ | |
fd361982 | 1438 | if ((bfd_section_flags (section->the_bfd_section) |
633785ff MM |
1439 | & SEC_READONLY) != 0) |
1440 | { | |
1441 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1442 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1443 | break; |
1444 | } | |
1445 | } | |
1446 | ||
9b409511 | 1447 | *xfered_len = len; |
bc113b4e | 1448 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1449 | } |
1450 | } | |
1451 | } | |
1452 | ||
1453 | /* Forward the request. */ | |
b6a8c27b PA |
1454 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1455 | offset, len, xfered_len); | |
633785ff MM |
1456 | } |
1457 | ||
f6ac5f3d | 1458 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1459 | |
f6ac5f3d PA |
1460 | int |
1461 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1462 | struct bp_target_info *bp_tgt) | |
633785ff | 1463 | { |
67b5c0c1 MM |
1464 | const char *old; |
1465 | int ret; | |
633785ff MM |
1466 | |
1467 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1468 | duration of this function. */ | |
67b5c0c1 MM |
1469 | old = replay_memory_access; |
1470 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1471 | |
1472 | ret = 0; | |
a70b8144 | 1473 | try |
492d29ea | 1474 | { |
b6a8c27b | 1475 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1476 | } |
230d2906 | 1477 | catch (const gdb_exception &except) |
492d29ea | 1478 | { |
6c63c96a | 1479 | replay_memory_access = old; |
eedc3f4f | 1480 | throw; |
492d29ea | 1481 | } |
6c63c96a | 1482 | replay_memory_access = old; |
633785ff MM |
1483 | |
1484 | return ret; | |
1485 | } | |
1486 | ||
f6ac5f3d | 1487 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1488 | |
f6ac5f3d PA |
1489 | int |
1490 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1491 | struct bp_target_info *bp_tgt, | |
1492 | enum remove_bp_reason reason) | |
633785ff | 1493 | { |
67b5c0c1 MM |
1494 | const char *old; |
1495 | int ret; | |
633785ff MM |
1496 | |
1497 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1498 | duration of this function. */ | |
67b5c0c1 MM |
1499 | old = replay_memory_access; |
1500 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1501 | |
1502 | ret = 0; | |
a70b8144 | 1503 | try |
492d29ea | 1504 | { |
b6a8c27b | 1505 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1506 | } |
230d2906 | 1507 | catch (const gdb_exception &except) |
492d29ea | 1508 | { |
6c63c96a | 1509 | replay_memory_access = old; |
eedc3f4f | 1510 | throw; |
492d29ea | 1511 | } |
6c63c96a | 1512 | replay_memory_access = old; |
633785ff MM |
1513 | |
1514 | return ret; | |
1515 | } | |
1516 | ||
f6ac5f3d | 1517 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1518 | |
f6ac5f3d PA |
1519 | void |
1520 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 MM |
1521 | { |
1522 | struct btrace_insn_iterator *replay; | |
1523 | struct thread_info *tp; | |
1524 | ||
222312d3 | 1525 | tp = find_thread_ptid (regcache->ptid ()); |
1f3ef581 MM |
1526 | gdb_assert (tp != NULL); |
1527 | ||
1528 | replay = tp->btrace.replay; | |
aef92902 | 1529 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1530 | { |
1531 | const struct btrace_insn *insn; | |
1532 | struct gdbarch *gdbarch; | |
1533 | int pcreg; | |
1534 | ||
ac7936df | 1535 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1536 | pcreg = gdbarch_pc_regnum (gdbarch); |
1537 | if (pcreg < 0) | |
1538 | return; | |
1539 | ||
1540 | /* We can only provide the PC register. */ | |
1541 | if (regno >= 0 && regno != pcreg) | |
1542 | return; | |
1543 | ||
1544 | insn = btrace_insn_get (replay); | |
1545 | gdb_assert (insn != NULL); | |
1546 | ||
73e1c03f | 1547 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1548 | } |
1549 | else | |
b6a8c27b | 1550 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1551 | } |
1552 | ||
f6ac5f3d | 1553 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1554 | |
f6ac5f3d PA |
1555 | void |
1556 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1557 | { |
a52eab48 | 1558 | if (!record_btrace_generating_corefile |
222312d3 | 1559 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1560 | error (_("Cannot write registers while replaying.")); |
1f3ef581 | 1561 | |
491144b5 | 1562 | gdb_assert (may_write_registers); |
1f3ef581 | 1563 | |
b6a8c27b | 1564 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1565 | } |
1566 | ||
f6ac5f3d | 1567 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1568 | |
f6ac5f3d PA |
1569 | void |
1570 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1571 | { |
a52eab48 | 1572 | if (!record_btrace_generating_corefile |
222312d3 | 1573 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1574 | return; |
1575 | ||
b6a8c27b | 1576 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1577 | } |
1578 | ||
0b722aec MM |
1579 | /* The branch trace frame cache. */ |
1580 | ||
1581 | struct btrace_frame_cache | |
1582 | { | |
1583 | /* The thread. */ | |
1584 | struct thread_info *tp; | |
1585 | ||
1586 | /* The frame info. */ | |
1587 | struct frame_info *frame; | |
1588 | ||
1589 | /* The branch trace function segment. */ | |
1590 | const struct btrace_function *bfun; | |
1591 | }; | |
1592 | ||
1593 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1594 | ||
1595 | static htab_t bfcache; | |
1596 | ||
1597 | /* hash_f for htab_create_alloc of bfcache. */ | |
1598 | ||
1599 | static hashval_t | |
1600 | bfcache_hash (const void *arg) | |
1601 | { | |
19ba03f4 SM |
1602 | const struct btrace_frame_cache *cache |
1603 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1604 | |
1605 | return htab_hash_pointer (cache->frame); | |
1606 | } | |
1607 | ||
1608 | /* eq_f for htab_create_alloc of bfcache. */ | |
1609 | ||
1610 | static int | |
1611 | bfcache_eq (const void *arg1, const void *arg2) | |
1612 | { | |
19ba03f4 SM |
1613 | const struct btrace_frame_cache *cache1 |
1614 | = (const struct btrace_frame_cache *) arg1; | |
1615 | const struct btrace_frame_cache *cache2 | |
1616 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1617 | |
1618 | return cache1->frame == cache2->frame; | |
1619 | } | |
1620 | ||
1621 | /* Create a new btrace frame cache. */ | |
1622 | ||
1623 | static struct btrace_frame_cache * | |
1624 | bfcache_new (struct frame_info *frame) | |
1625 | { | |
1626 | struct btrace_frame_cache *cache; | |
1627 | void **slot; | |
1628 | ||
1629 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1630 | cache->frame = frame; | |
1631 | ||
1632 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1633 | gdb_assert (*slot == NULL); | |
1634 | *slot = cache; | |
1635 | ||
1636 | return cache; | |
1637 | } | |
1638 | ||
1639 | /* Extract the branch trace function from a branch trace frame. */ | |
1640 | ||
1641 | static const struct btrace_function * | |
1642 | btrace_get_frame_function (struct frame_info *frame) | |
1643 | { | |
1644 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1645 | struct btrace_frame_cache pattern; |
1646 | void **slot; | |
1647 | ||
1648 | pattern.frame = frame; | |
1649 | ||
1650 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1651 | if (slot == NULL) | |
1652 | return NULL; | |
1653 | ||
19ba03f4 | 1654 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1655 | return cache->bfun; |
1656 | } | |
1657 | ||
cecac1ab MM |
1658 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1659 | ||
1660 | static enum unwind_stop_reason | |
1661 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1662 | void **this_cache) | |
1663 | { | |
0b722aec MM |
1664 | const struct btrace_frame_cache *cache; |
1665 | const struct btrace_function *bfun; | |
1666 | ||
19ba03f4 | 1667 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1668 | bfun = cache->bfun; |
1669 | gdb_assert (bfun != NULL); | |
1670 | ||
42bfe59e | 1671 | if (bfun->up == 0) |
0b722aec MM |
1672 | return UNWIND_UNAVAILABLE; |
1673 | ||
1674 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1675 | } |
1676 | ||
1677 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1678 | ||
1679 | static void | |
1680 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1681 | struct frame_id *this_id) | |
1682 | { | |
0b722aec MM |
1683 | const struct btrace_frame_cache *cache; |
1684 | const struct btrace_function *bfun; | |
4aeb0dfc | 1685 | struct btrace_call_iterator it; |
0b722aec MM |
1686 | CORE_ADDR code, special; |
1687 | ||
19ba03f4 | 1688 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1689 | |
1690 | bfun = cache->bfun; | |
1691 | gdb_assert (bfun != NULL); | |
1692 | ||
4aeb0dfc TW |
1693 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1694 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1695 | |
1696 | code = get_frame_func (this_frame); | |
1697 | special = bfun->number; | |
1698 | ||
1699 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1700 | ||
1701 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1702 | btrace_get_bfun_name (cache->bfun), | |
1703 | core_addr_to_string_nz (this_id->code_addr), | |
1704 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1705 | } |
1706 | ||
1707 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1708 | ||
1709 | static struct value * | |
1710 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1711 | void **this_cache, | |
1712 | int regnum) | |
1713 | { | |
0b722aec MM |
1714 | const struct btrace_frame_cache *cache; |
1715 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1716 | struct btrace_call_iterator it; |
0b722aec MM |
1717 | struct gdbarch *gdbarch; |
1718 | CORE_ADDR pc; | |
1719 | int pcreg; | |
1720 | ||
1721 | gdbarch = get_frame_arch (this_frame); | |
1722 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1723 | if (pcreg < 0 || regnum != pcreg) | |
1724 | throw_error (NOT_AVAILABLE_ERROR, | |
1725 | _("Registers are not available in btrace record history")); | |
1726 | ||
19ba03f4 | 1727 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1728 | bfun = cache->bfun; |
1729 | gdb_assert (bfun != NULL); | |
1730 | ||
42bfe59e | 1731 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1732 | throw_error (NOT_AVAILABLE_ERROR, |
1733 | _("No caller in btrace record history")); | |
1734 | ||
42bfe59e TW |
1735 | caller = btrace_call_get (&it); |
1736 | ||
0b722aec | 1737 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1738 | pc = caller->insn.front ().pc; |
0b722aec MM |
1739 | else |
1740 | { | |
0860c437 | 1741 | pc = caller->insn.back ().pc; |
0b722aec MM |
1742 | pc += gdb_insn_length (gdbarch, pc); |
1743 | } | |
1744 | ||
1745 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1746 | btrace_get_bfun_name (bfun), bfun->level, | |
1747 | core_addr_to_string_nz (pc)); | |
1748 | ||
1749 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1750 | } |
1751 | ||
1752 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1753 | ||
1754 | static int | |
1755 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1756 | struct frame_info *this_frame, | |
1757 | void **this_cache) | |
1758 | { | |
0b722aec MM |
1759 | const struct btrace_function *bfun; |
1760 | struct btrace_frame_cache *cache; | |
cecac1ab | 1761 | struct thread_info *tp; |
0b722aec | 1762 | struct frame_info *next; |
cecac1ab MM |
1763 | |
1764 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1765 | tp = inferior_thread (); |
cecac1ab | 1766 | |
0b722aec MM |
1767 | bfun = NULL; |
1768 | next = get_next_frame (this_frame); | |
1769 | if (next == NULL) | |
1770 | { | |
1771 | const struct btrace_insn_iterator *replay; | |
1772 | ||
1773 | replay = tp->btrace.replay; | |
1774 | if (replay != NULL) | |
08c3f6d2 | 1775 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1776 | } |
1777 | else | |
1778 | { | |
1779 | const struct btrace_function *callee; | |
42bfe59e | 1780 | struct btrace_call_iterator it; |
0b722aec MM |
1781 | |
1782 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1783 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1784 | return 0; | |
1785 | ||
1786 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1787 | return 0; | |
1788 | ||
1789 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1790 | } |
1791 | ||
1792 | if (bfun == NULL) | |
1793 | return 0; | |
1794 | ||
1795 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1796 | btrace_get_bfun_name (bfun), bfun->level); | |
1797 | ||
1798 | /* This is our frame. Initialize the frame cache. */ | |
1799 | cache = bfcache_new (this_frame); | |
1800 | cache->tp = tp; | |
1801 | cache->bfun = bfun; | |
1802 | ||
1803 | *this_cache = cache; | |
1804 | return 1; | |
1805 | } | |
1806 | ||
1807 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1808 | ||
1809 | static int | |
1810 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1811 | struct frame_info *this_frame, | |
1812 | void **this_cache) | |
1813 | { | |
1814 | const struct btrace_function *bfun, *callee; | |
1815 | struct btrace_frame_cache *cache; | |
42bfe59e | 1816 | struct btrace_call_iterator it; |
0b722aec | 1817 | struct frame_info *next; |
42bfe59e | 1818 | struct thread_info *tinfo; |
0b722aec MM |
1819 | |
1820 | next = get_next_frame (this_frame); | |
1821 | if (next == NULL) | |
1822 | return 0; | |
1823 | ||
1824 | callee = btrace_get_frame_function (next); | |
1825 | if (callee == NULL) | |
1826 | return 0; | |
1827 | ||
1828 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1829 | return 0; | |
1830 | ||
00431a78 | 1831 | tinfo = inferior_thread (); |
42bfe59e | 1832 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1833 | return 0; |
1834 | ||
42bfe59e TW |
1835 | bfun = btrace_call_get (&it); |
1836 | ||
0b722aec MM |
1837 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1838 | btrace_get_bfun_name (bfun), bfun->level); | |
1839 | ||
1840 | /* This is our frame. Initialize the frame cache. */ | |
1841 | cache = bfcache_new (this_frame); | |
42bfe59e | 1842 | cache->tp = tinfo; |
0b722aec MM |
1843 | cache->bfun = bfun; |
1844 | ||
1845 | *this_cache = cache; | |
1846 | return 1; | |
1847 | } | |
1848 | ||
1849 | static void | |
1850 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1851 | { | |
1852 | struct btrace_frame_cache *cache; | |
1853 | void **slot; | |
1854 | ||
19ba03f4 | 1855 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1856 | |
1857 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1858 | gdb_assert (slot != NULL); | |
1859 | ||
1860 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1861 | } |
1862 | ||
1863 | /* btrace recording does not store previous memory content, neither the stack | |
30baf67b | 1864 | frames content. Any unwinding would return erroneous results as the stack |
cecac1ab MM |
1865 | contents no longer matches the changed PC value restored from history. |
1866 | Therefore this unwinder reports any possibly unwound registers as | |
1867 | <unavailable>. */ | |
1868 | ||
0b722aec | 1869 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1870 | { |
1871 | NORMAL_FRAME, | |
1872 | record_btrace_frame_unwind_stop_reason, | |
1873 | record_btrace_frame_this_id, | |
1874 | record_btrace_frame_prev_register, | |
1875 | NULL, | |
0b722aec MM |
1876 | record_btrace_frame_sniffer, |
1877 | record_btrace_frame_dealloc_cache | |
1878 | }; | |
1879 | ||
1880 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1881 | { | |
1882 | TAILCALL_FRAME, | |
1883 | record_btrace_frame_unwind_stop_reason, | |
1884 | record_btrace_frame_this_id, | |
1885 | record_btrace_frame_prev_register, | |
1886 | NULL, | |
1887 | record_btrace_tailcall_frame_sniffer, | |
1888 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1889 | }; |
b2f4cfde | 1890 | |
f6ac5f3d | 1891 | /* Implement the get_unwinder method. */ |
ac01945b | 1892 | |
f6ac5f3d PA |
1893 | const struct frame_unwind * |
1894 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1895 | { |
1896 | return &record_btrace_frame_unwind; | |
1897 | } | |
1898 | ||
f6ac5f3d | 1899 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1900 | |
f6ac5f3d PA |
1901 | const struct frame_unwind * |
1902 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1903 | { |
1904 | return &record_btrace_tailcall_frame_unwind; | |
1905 | } | |
1906 | ||
987e68b1 MM |
1907 | /* Return a human-readable string for FLAG. */ |
1908 | ||
1909 | static const char * | |
1910 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1911 | { | |
1912 | switch (flag) | |
1913 | { | |
1914 | case BTHR_STEP: | |
1915 | return "step"; | |
1916 | ||
1917 | case BTHR_RSTEP: | |
1918 | return "reverse-step"; | |
1919 | ||
1920 | case BTHR_CONT: | |
1921 | return "cont"; | |
1922 | ||
1923 | case BTHR_RCONT: | |
1924 | return "reverse-cont"; | |
1925 | ||
1926 | case BTHR_STOP: | |
1927 | return "stop"; | |
1928 | } | |
1929 | ||
1930 | return "<invalid>"; | |
1931 | } | |
1932 | ||
52834460 MM |
1933 | /* Indicate that TP should be resumed according to FLAG. */ |
1934 | ||
1935 | static void | |
1936 | record_btrace_resume_thread (struct thread_info *tp, | |
1937 | enum btrace_thread_flag flag) | |
1938 | { | |
1939 | struct btrace_thread_info *btinfo; | |
1940 | ||
43792cf0 | 1941 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d TT |
1942 | target_pid_to_str (tp->ptid).c_str (), flag, |
1943 | btrace_thread_flag_to_str (flag)); | |
52834460 MM |
1944 | |
1945 | btinfo = &tp->btrace; | |
1946 | ||
52834460 | 1947 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1948 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1949 | |
0ca912df MM |
1950 | /* A resume request overwrites a preceding resume or stop request. */ |
1951 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1952 | btinfo->flags |= flag; |
1953 | } | |
1954 | ||
ec71cc2f MM |
1955 | /* Get the current frame for TP. */ |
1956 | ||
79b8d3b0 TT |
1957 | static struct frame_id |
1958 | get_thread_current_frame_id (struct thread_info *tp) | |
ec71cc2f | 1959 | { |
79b8d3b0 | 1960 | struct frame_id id; |
ec71cc2f MM |
1961 | int executing; |
1962 | ||
00431a78 PA |
1963 | /* Set current thread, which is implicitly used by |
1964 | get_current_frame. */ | |
1965 | scoped_restore_current_thread restore_thread; | |
1966 | ||
1967 | switch_to_thread (tp); | |
ec71cc2f MM |
1968 | |
1969 | /* Clear the executing flag to allow changes to the current frame. | |
1970 | We are not actually running, yet. We just started a reverse execution | |
1971 | command or a record goto command. | |
1972 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1973 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f | 1974 | move the thread. Since we need to recompute the stack, we temporarily |
85102364 | 1975 | set EXECUTING to false. */ |
00431a78 PA |
1976 | executing = tp->executing; |
1977 | set_executing (inferior_ptid, false); | |
ec71cc2f | 1978 | |
79b8d3b0 | 1979 | id = null_frame_id; |
a70b8144 | 1980 | try |
ec71cc2f | 1981 | { |
79b8d3b0 | 1982 | id = get_frame_id (get_current_frame ()); |
ec71cc2f | 1983 | } |
230d2906 | 1984 | catch (const gdb_exception &except) |
ec71cc2f MM |
1985 | { |
1986 | /* Restore the previous execution state. */ | |
1987 | set_executing (inferior_ptid, executing); | |
1988 | ||
eedc3f4f | 1989 | throw; |
ec71cc2f | 1990 | } |
ec71cc2f MM |
1991 | |
1992 | /* Restore the previous execution state. */ | |
1993 | set_executing (inferior_ptid, executing); | |
1994 | ||
79b8d3b0 | 1995 | return id; |
ec71cc2f MM |
1996 | } |
1997 | ||
52834460 MM |
1998 | /* Start replaying a thread. */ |
1999 | ||
2000 | static struct btrace_insn_iterator * | |
2001 | record_btrace_start_replaying (struct thread_info *tp) | |
2002 | { | |
52834460 MM |
2003 | struct btrace_insn_iterator *replay; |
2004 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2005 | |
2006 | btinfo = &tp->btrace; | |
2007 | replay = NULL; | |
2008 | ||
2009 | /* We can't start replaying without trace. */ | |
b54b03bd | 2010 | if (btinfo->functions.empty ()) |
52834460 MM |
2011 | return NULL; |
2012 | ||
52834460 MM |
2013 | /* GDB stores the current frame_id when stepping in order to detects steps |
2014 | into subroutines. | |
2015 | Since frames are computed differently when we're replaying, we need to | |
2016 | recompute those stored frames and fix them up so we can still detect | |
2017 | subroutines after we started replaying. */ | |
a70b8144 | 2018 | try |
52834460 | 2019 | { |
52834460 MM |
2020 | struct frame_id frame_id; |
2021 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2022 | ||
2023 | /* The current frame without replaying - computed via normal unwind. */ | |
79b8d3b0 | 2024 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2025 | |
2026 | /* Check if we need to update any stepping-related frame id's. */ | |
2027 | upd_step_frame_id = frame_id_eq (frame_id, | |
2028 | tp->control.step_frame_id); | |
2029 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2030 | tp->control.step_stack_frame_id); | |
2031 | ||
2032 | /* We start replaying at the end of the branch trace. This corresponds | |
2033 | to the current instruction. */ | |
8d749320 | 2034 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2035 | btrace_insn_end (replay, btinfo); |
2036 | ||
31fd9caa MM |
2037 | /* Skip gaps at the end of the trace. */ |
2038 | while (btrace_insn_get (replay) == NULL) | |
2039 | { | |
2040 | unsigned int steps; | |
2041 | ||
2042 | steps = btrace_insn_prev (replay, 1); | |
2043 | if (steps == 0) | |
2044 | error (_("No trace.")); | |
2045 | } | |
2046 | ||
52834460 MM |
2047 | /* We're not replaying, yet. */ |
2048 | gdb_assert (btinfo->replay == NULL); | |
2049 | btinfo->replay = replay; | |
2050 | ||
2051 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2052 | registers_changed_thread (tp); |
52834460 MM |
2053 | |
2054 | /* The current frame with replaying - computed via btrace unwind. */ | |
79b8d3b0 | 2055 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2056 | |
2057 | /* Replace stepping related frames where necessary. */ | |
2058 | if (upd_step_frame_id) | |
2059 | tp->control.step_frame_id = frame_id; | |
2060 | if (upd_step_stack_frame_id) | |
2061 | tp->control.step_stack_frame_id = frame_id; | |
2062 | } | |
230d2906 | 2063 | catch (const gdb_exception &except) |
52834460 MM |
2064 | { |
2065 | xfree (btinfo->replay); | |
2066 | btinfo->replay = NULL; | |
2067 | ||
00431a78 | 2068 | registers_changed_thread (tp); |
52834460 | 2069 | |
eedc3f4f | 2070 | throw; |
52834460 MM |
2071 | } |
2072 | ||
2073 | return replay; | |
2074 | } | |
2075 | ||
2076 | /* Stop replaying a thread. */ | |
2077 | ||
2078 | static void | |
2079 | record_btrace_stop_replaying (struct thread_info *tp) | |
2080 | { | |
2081 | struct btrace_thread_info *btinfo; | |
2082 | ||
2083 | btinfo = &tp->btrace; | |
2084 | ||
2085 | xfree (btinfo->replay); | |
2086 | btinfo->replay = NULL; | |
2087 | ||
2088 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2089 | registers_changed_thread (tp); |
52834460 MM |
2090 | } |
2091 | ||
e3cfc1c7 MM |
2092 | /* Stop replaying TP if it is at the end of its execution history. */ |
2093 | ||
2094 | static void | |
2095 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2096 | { | |
2097 | struct btrace_insn_iterator *replay, end; | |
2098 | struct btrace_thread_info *btinfo; | |
2099 | ||
2100 | btinfo = &tp->btrace; | |
2101 | replay = btinfo->replay; | |
2102 | ||
2103 | if (replay == NULL) | |
2104 | return; | |
2105 | ||
2106 | btrace_insn_end (&end, btinfo); | |
2107 | ||
2108 | if (btrace_insn_cmp (replay, &end) == 0) | |
2109 | record_btrace_stop_replaying (tp); | |
2110 | } | |
2111 | ||
f6ac5f3d | 2112 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2113 | |
f6ac5f3d PA |
2114 | void |
2115 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2116 | { |
d2939ba2 | 2117 | enum btrace_thread_flag flag, cflag; |
52834460 | 2118 | |
a068643d | 2119 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (), |
f6ac5f3d | 2120 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2121 | step ? "step" : "cont"); |
52834460 | 2122 | |
0ca912df MM |
2123 | /* Store the execution direction of the last resume. |
2124 | ||
f6ac5f3d | 2125 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2126 | to not change the execution direction in-between. */ |
f6ac5f3d | 2127 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2128 | |
0ca912df | 2129 | /* As long as we're not replaying, just forward the request. |
52834460 | 2130 | |
0ca912df MM |
2131 | For non-stop targets this means that no thread is replaying. In order to |
2132 | make progress, we may need to explicitly move replaying threads to the end | |
2133 | of their execution history. */ | |
f6ac5f3d PA |
2134 | if ((::execution_direction != EXEC_REVERSE) |
2135 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2136 | { |
b6a8c27b | 2137 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2138 | return; |
b2f4cfde MM |
2139 | } |
2140 | ||
52834460 | 2141 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2142 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2143 | { |
2144 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2145 | cflag = BTHR_RCONT; | |
2146 | } | |
52834460 | 2147 | else |
d2939ba2 MM |
2148 | { |
2149 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2150 | cflag = BTHR_CONT; | |
2151 | } | |
52834460 | 2152 | |
52834460 | 2153 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2154 | record_btrace_wait below. |
2155 | ||
2156 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
2157 | if (!target_is_non_stop_p ()) | |
2158 | { | |
26a57c92 | 2159 | gdb_assert (inferior_ptid.matches (ptid)); |
d2939ba2 | 2160 | |
08036331 PA |
2161 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2162 | { | |
2163 | if (tp->ptid.matches (inferior_ptid)) | |
2164 | record_btrace_resume_thread (tp, flag); | |
2165 | else | |
2166 | record_btrace_resume_thread (tp, cflag); | |
2167 | } | |
d2939ba2 MM |
2168 | } |
2169 | else | |
2170 | { | |
08036331 PA |
2171 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2172 | record_btrace_resume_thread (tp, flag); | |
d2939ba2 | 2173 | } |
70ad5bff MM |
2174 | |
2175 | /* Async support. */ | |
2176 | if (target_can_async_p ()) | |
2177 | { | |
6a3753b3 | 2178 | target_async (1); |
70ad5bff MM |
2179 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2180 | } | |
52834460 MM |
2181 | } |
2182 | ||
f6ac5f3d | 2183 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2184 | |
f6ac5f3d PA |
2185 | void |
2186 | record_btrace_target::commit_resume () | |
85ad3aaf | 2187 | { |
f6ac5f3d PA |
2188 | if ((::execution_direction != EXEC_REVERSE) |
2189 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2190 | beneath ()->commit_resume (); |
85ad3aaf PA |
2191 | } |
2192 | ||
987e68b1 MM |
2193 | /* Cancel resuming TP. */ |
2194 | ||
2195 | static void | |
2196 | record_btrace_cancel_resume (struct thread_info *tp) | |
2197 | { | |
2198 | enum btrace_thread_flag flags; | |
2199 | ||
2200 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2201 | if (flags == 0) | |
2202 | return; | |
2203 | ||
43792cf0 PA |
2204 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2205 | print_thread_id (tp), | |
a068643d | 2206 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 MM |
2207 | btrace_thread_flag_to_str (flags)); |
2208 | ||
2209 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2210 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2211 | } |
2212 | ||
2213 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2214 | ||
2215 | static struct target_waitstatus | |
2216 | btrace_step_no_history (void) | |
2217 | { | |
2218 | struct target_waitstatus status; | |
2219 | ||
2220 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2221 | ||
2222 | return status; | |
2223 | } | |
2224 | ||
2225 | /* Return a target_waitstatus indicating that a step finished. */ | |
2226 | ||
2227 | static struct target_waitstatus | |
2228 | btrace_step_stopped (void) | |
2229 | { | |
2230 | struct target_waitstatus status; | |
2231 | ||
2232 | status.kind = TARGET_WAITKIND_STOPPED; | |
2233 | status.value.sig = GDB_SIGNAL_TRAP; | |
2234 | ||
2235 | return status; | |
2236 | } | |
2237 | ||
6e4879f0 MM |
2238 | /* Return a target_waitstatus indicating that a thread was stopped as |
2239 | requested. */ | |
2240 | ||
2241 | static struct target_waitstatus | |
2242 | btrace_step_stopped_on_request (void) | |
2243 | { | |
2244 | struct target_waitstatus status; | |
2245 | ||
2246 | status.kind = TARGET_WAITKIND_STOPPED; | |
2247 | status.value.sig = GDB_SIGNAL_0; | |
2248 | ||
2249 | return status; | |
2250 | } | |
2251 | ||
d825d248 MM |
2252 | /* Return a target_waitstatus indicating a spurious stop. */ |
2253 | ||
2254 | static struct target_waitstatus | |
2255 | btrace_step_spurious (void) | |
2256 | { | |
2257 | struct target_waitstatus status; | |
2258 | ||
2259 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2260 | ||
2261 | return status; | |
2262 | } | |
2263 | ||
e3cfc1c7 MM |
2264 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2265 | ||
2266 | static struct target_waitstatus | |
2267 | btrace_step_no_resumed (void) | |
2268 | { | |
2269 | struct target_waitstatus status; | |
2270 | ||
2271 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2272 | ||
2273 | return status; | |
2274 | } | |
2275 | ||
2276 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2277 | ||
2278 | static struct target_waitstatus | |
2279 | btrace_step_again (void) | |
2280 | { | |
2281 | struct target_waitstatus status; | |
2282 | ||
2283 | status.kind = TARGET_WAITKIND_IGNORE; | |
2284 | ||
2285 | return status; | |
2286 | } | |
2287 | ||
52834460 MM |
2288 | /* Clear the record histories. */ |
2289 | ||
2290 | static void | |
2291 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2292 | { | |
2293 | xfree (btinfo->insn_history); | |
2294 | xfree (btinfo->call_history); | |
2295 | ||
2296 | btinfo->insn_history = NULL; | |
2297 | btinfo->call_history = NULL; | |
2298 | } | |
2299 | ||
3c615f99 MM |
2300 | /* Check whether TP's current replay position is at a breakpoint. */ |
2301 | ||
2302 | static int | |
2303 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2304 | { | |
2305 | struct btrace_insn_iterator *replay; | |
2306 | struct btrace_thread_info *btinfo; | |
2307 | const struct btrace_insn *insn; | |
3c615f99 MM |
2308 | |
2309 | btinfo = &tp->btrace; | |
2310 | replay = btinfo->replay; | |
2311 | ||
2312 | if (replay == NULL) | |
2313 | return 0; | |
2314 | ||
2315 | insn = btrace_insn_get (replay); | |
2316 | if (insn == NULL) | |
2317 | return 0; | |
2318 | ||
00431a78 | 2319 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2320 | &btinfo->stop_reason); |
2321 | } | |
2322 | ||
d825d248 | 2323 | /* Step one instruction in forward direction. */ |
52834460 MM |
2324 | |
2325 | static struct target_waitstatus | |
d825d248 | 2326 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2327 | { |
b61ce85c | 2328 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2329 | struct btrace_thread_info *btinfo; |
52834460 | 2330 | |
d825d248 MM |
2331 | btinfo = &tp->btrace; |
2332 | replay = btinfo->replay; | |
2333 | ||
2334 | /* We're done if we're not replaying. */ | |
2335 | if (replay == NULL) | |
2336 | return btrace_step_no_history (); | |
2337 | ||
011c71b6 MM |
2338 | /* Check if we're stepping a breakpoint. */ |
2339 | if (record_btrace_replay_at_breakpoint (tp)) | |
2340 | return btrace_step_stopped (); | |
2341 | ||
b61ce85c MM |
2342 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2343 | jump back to the instruction at which we started. */ | |
2344 | start = *replay; | |
d825d248 MM |
2345 | do |
2346 | { | |
2347 | unsigned int steps; | |
2348 | ||
e3cfc1c7 MM |
2349 | /* We will bail out here if we continue stepping after reaching the end |
2350 | of the execution history. */ | |
d825d248 MM |
2351 | steps = btrace_insn_next (replay, 1); |
2352 | if (steps == 0) | |
b61ce85c MM |
2353 | { |
2354 | *replay = start; | |
2355 | return btrace_step_no_history (); | |
2356 | } | |
d825d248 MM |
2357 | } |
2358 | while (btrace_insn_get (replay) == NULL); | |
2359 | ||
2360 | /* Determine the end of the instruction trace. */ | |
2361 | btrace_insn_end (&end, btinfo); | |
2362 | ||
e3cfc1c7 MM |
2363 | /* The execution trace contains (and ends with) the current instruction. |
2364 | This instruction has not been executed, yet, so the trace really ends | |
2365 | one instruction earlier. */ | |
d825d248 | 2366 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2367 | return btrace_step_no_history (); |
d825d248 MM |
2368 | |
2369 | return btrace_step_spurious (); | |
2370 | } | |
2371 | ||
2372 | /* Step one instruction in backward direction. */ | |
2373 | ||
2374 | static struct target_waitstatus | |
2375 | record_btrace_single_step_backward (struct thread_info *tp) | |
2376 | { | |
b61ce85c | 2377 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2378 | struct btrace_thread_info *btinfo; |
e59fa00f | 2379 | |
52834460 MM |
2380 | btinfo = &tp->btrace; |
2381 | replay = btinfo->replay; | |
2382 | ||
d825d248 MM |
2383 | /* Start replaying if we're not already doing so. */ |
2384 | if (replay == NULL) | |
2385 | replay = record_btrace_start_replaying (tp); | |
2386 | ||
2387 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2388 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2389 | the trace), jump back to the instruction at which we started. */ | |
2390 | start = *replay; | |
d825d248 MM |
2391 | do |
2392 | { | |
2393 | unsigned int steps; | |
2394 | ||
2395 | steps = btrace_insn_prev (replay, 1); | |
2396 | if (steps == 0) | |
b61ce85c MM |
2397 | { |
2398 | *replay = start; | |
2399 | return btrace_step_no_history (); | |
2400 | } | |
d825d248 MM |
2401 | } |
2402 | while (btrace_insn_get (replay) == NULL); | |
2403 | ||
011c71b6 MM |
2404 | /* Check if we're stepping a breakpoint. |
2405 | ||
2406 | For reverse-stepping, this check is after the step. There is logic in | |
2407 | infrun.c that handles reverse-stepping separately. See, for example, | |
2408 | proceed and adjust_pc_after_break. | |
2409 | ||
2410 | This code assumes that for reverse-stepping, PC points to the last | |
2411 | de-executed instruction, whereas for forward-stepping PC points to the | |
2412 | next to-be-executed instruction. */ | |
2413 | if (record_btrace_replay_at_breakpoint (tp)) | |
2414 | return btrace_step_stopped (); | |
2415 | ||
d825d248 MM |
2416 | return btrace_step_spurious (); |
2417 | } | |
2418 | ||
2419 | /* Step a single thread. */ | |
2420 | ||
2421 | static struct target_waitstatus | |
2422 | record_btrace_step_thread (struct thread_info *tp) | |
2423 | { | |
2424 | struct btrace_thread_info *btinfo; | |
2425 | struct target_waitstatus status; | |
2426 | enum btrace_thread_flag flags; | |
2427 | ||
2428 | btinfo = &tp->btrace; | |
2429 | ||
6e4879f0 MM |
2430 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2431 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2432 | |
43792cf0 | 2433 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d | 2434 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 | 2435 | btrace_thread_flag_to_str (flags)); |
52834460 | 2436 | |
6e4879f0 MM |
2437 | /* We can't step without an execution history. */ |
2438 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2439 | return btrace_step_no_history (); | |
2440 | ||
52834460 MM |
2441 | switch (flags) |
2442 | { | |
2443 | default: | |
2444 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2445 | ||
6e4879f0 MM |
2446 | case BTHR_STOP: |
2447 | return btrace_step_stopped_on_request (); | |
2448 | ||
52834460 | 2449 | case BTHR_STEP: |
d825d248 MM |
2450 | status = record_btrace_single_step_forward (tp); |
2451 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2452 | break; |
52834460 MM |
2453 | |
2454 | return btrace_step_stopped (); | |
2455 | ||
2456 | case BTHR_RSTEP: | |
d825d248 MM |
2457 | status = record_btrace_single_step_backward (tp); |
2458 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2459 | break; |
52834460 MM |
2460 | |
2461 | return btrace_step_stopped (); | |
2462 | ||
2463 | case BTHR_CONT: | |
e3cfc1c7 MM |
2464 | status = record_btrace_single_step_forward (tp); |
2465 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2466 | break; | |
52834460 | 2467 | |
e3cfc1c7 MM |
2468 | btinfo->flags |= flags; |
2469 | return btrace_step_again (); | |
52834460 MM |
2470 | |
2471 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2472 | status = record_btrace_single_step_backward (tp); |
2473 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2474 | break; | |
52834460 | 2475 | |
e3cfc1c7 MM |
2476 | btinfo->flags |= flags; |
2477 | return btrace_step_again (); | |
2478 | } | |
d825d248 | 2479 | |
f6ac5f3d | 2480 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2481 | method will stop the thread for whom the event is reported. */ |
2482 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2483 | btinfo->flags |= flags; | |
52834460 | 2484 | |
e3cfc1c7 | 2485 | return status; |
b2f4cfde MM |
2486 | } |
2487 | ||
a6b5be76 MM |
2488 | /* Announce further events if necessary. */ |
2489 | ||
2490 | static void | |
53127008 SM |
2491 | record_btrace_maybe_mark_async_event |
2492 | (const std::vector<thread_info *> &moving, | |
2493 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2494 | { |
53127008 SM |
2495 | bool more_moving = !moving.empty (); |
2496 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2497 | |
2498 | if (!more_moving && !more_no_history) | |
2499 | return; | |
2500 | ||
2501 | if (more_moving) | |
2502 | DEBUG ("movers pending"); | |
2503 | ||
2504 | if (more_no_history) | |
2505 | DEBUG ("no-history pending"); | |
2506 | ||
2507 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2508 | } | |
2509 | ||
f6ac5f3d | 2510 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2511 | |
f6ac5f3d PA |
2512 | ptid_t |
2513 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2514 | int options) | |
b2f4cfde | 2515 | { |
53127008 SM |
2516 | std::vector<thread_info *> moving; |
2517 | std::vector<thread_info *> no_history; | |
52834460 | 2518 | |
a068643d | 2519 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid).c_str (), options); |
52834460 | 2520 | |
b2f4cfde | 2521 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2522 | if ((::execution_direction != EXEC_REVERSE) |
2523 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2524 | { |
b6a8c27b | 2525 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2526 | } |
2527 | ||
e3cfc1c7 | 2528 | /* Keep a work list of moving threads. */ |
08036331 PA |
2529 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2530 | if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) | |
2531 | moving.push_back (tp); | |
e3cfc1c7 | 2532 | |
53127008 | 2533 | if (moving.empty ()) |
52834460 | 2534 | { |
e3cfc1c7 | 2535 | *status = btrace_step_no_resumed (); |
52834460 | 2536 | |
a068643d | 2537 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (), |
23fdd69e | 2538 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2539 | |
e3cfc1c7 | 2540 | return null_ptid; |
52834460 MM |
2541 | } |
2542 | ||
e3cfc1c7 MM |
2543 | /* Step moving threads one by one, one step each, until either one thread |
2544 | reports an event or we run out of threads to step. | |
2545 | ||
2546 | When stepping more than one thread, chances are that some threads reach | |
2547 | the end of their execution history earlier than others. If we reported | |
2548 | this immediately, all-stop on top of non-stop would stop all threads and | |
2549 | resume the same threads next time. And we would report the same thread | |
2550 | having reached the end of its execution history again. | |
2551 | ||
2552 | In the worst case, this would starve the other threads. But even if other | |
2553 | threads would be allowed to make progress, this would result in far too | |
2554 | many intermediate stops. | |
2555 | ||
2556 | We therefore delay the reporting of "no execution history" until we have | |
2557 | nothing else to report. By this time, all threads should have moved to | |
2558 | either the beginning or the end of their execution history. There will | |
2559 | be a single user-visible stop. */ | |
53127008 SM |
2560 | struct thread_info *eventing = NULL; |
2561 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2562 | { |
53127008 | 2563 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2564 | { |
53127008 SM |
2565 | thread_info *tp = moving[ix]; |
2566 | ||
e3cfc1c7 MM |
2567 | *status = record_btrace_step_thread (tp); |
2568 | ||
2569 | switch (status->kind) | |
2570 | { | |
2571 | case TARGET_WAITKIND_IGNORE: | |
2572 | ix++; | |
2573 | break; | |
2574 | ||
2575 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2576 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2577 | break; |
2578 | ||
2579 | default: | |
53127008 | 2580 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2581 | break; |
2582 | } | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | if (eventing == NULL) | |
2587 | { | |
2588 | /* We started with at least one moving thread. This thread must have | |
2589 | either stopped or reached the end of its execution history. | |
2590 | ||
2591 | In the former case, EVENTING must not be NULL. | |
2592 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2593 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2594 | |
2595 | /* We kept threads moving at the end of their execution history. Stop | |
2596 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2597 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2598 | eventing->btrace.flags &= ~BTHR_MOVE; |
2599 | ||
2600 | *status = btrace_step_no_history (); | |
2601 | } | |
2602 | ||
2603 | gdb_assert (eventing != NULL); | |
2604 | ||
2605 | /* We kept threads replaying at the end of their execution history. Stop | |
2606 | replaying EVENTING now that we are going to report its stop. */ | |
2607 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2608 | |
2609 | /* Stop all other threads. */ | |
5953356c | 2610 | if (!target_is_non_stop_p ()) |
53127008 | 2611 | { |
08036331 | 2612 | for (thread_info *tp : all_non_exited_threads ()) |
53127008 SM |
2613 | record_btrace_cancel_resume (tp); |
2614 | } | |
52834460 | 2615 | |
a6b5be76 MM |
2616 | /* In async mode, we need to announce further events. */ |
2617 | if (target_is_async_p ()) | |
2618 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2619 | ||
52834460 | 2620 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2621 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2622 | |
2623 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2624 | registers_changed_thread (eventing); |
e3cfc1c7 | 2625 | |
43792cf0 PA |
2626 | DEBUG ("wait ended by thread %s (%s): %s", |
2627 | print_thread_id (eventing), | |
a068643d | 2628 | target_pid_to_str (eventing->ptid).c_str (), |
23fdd69e | 2629 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2630 | |
e3cfc1c7 | 2631 | return eventing->ptid; |
52834460 MM |
2632 | } |
2633 | ||
f6ac5f3d | 2634 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2635 | |
f6ac5f3d PA |
2636 | void |
2637 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 | 2638 | { |
a068643d | 2639 | DEBUG ("stop %s", target_pid_to_str (ptid).c_str ()); |
6e4879f0 MM |
2640 | |
2641 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2642 | if ((::execution_direction != EXEC_REVERSE) |
2643 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2644 | { |
b6a8c27b | 2645 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2646 | } |
2647 | else | |
2648 | { | |
08036331 PA |
2649 | for (thread_info *tp : all_non_exited_threads (ptid)) |
2650 | { | |
2651 | tp->btrace.flags &= ~BTHR_MOVE; | |
2652 | tp->btrace.flags |= BTHR_STOP; | |
2653 | } | |
6e4879f0 MM |
2654 | } |
2655 | } | |
2656 | ||
f6ac5f3d | 2657 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2658 | |
57810aa7 | 2659 | bool |
f6ac5f3d | 2660 | record_btrace_target::can_execute_reverse () |
52834460 | 2661 | { |
57810aa7 | 2662 | return true; |
52834460 MM |
2663 | } |
2664 | ||
f6ac5f3d | 2665 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2666 | |
57810aa7 | 2667 | bool |
f6ac5f3d | 2668 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2669 | { |
f6ac5f3d | 2670 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2671 | { |
2672 | struct thread_info *tp = inferior_thread (); | |
2673 | ||
2674 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2675 | } | |
2676 | ||
b6a8c27b | 2677 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2678 | } |
2679 | ||
f6ac5f3d | 2680 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2681 | record-btrace. */ |
2682 | ||
57810aa7 | 2683 | bool |
f6ac5f3d | 2684 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2685 | { |
f6ac5f3d | 2686 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2687 | return true; |
9e8915c6 | 2688 | |
b6a8c27b | 2689 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2690 | } |
2691 | ||
f6ac5f3d | 2692 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2693 | |
57810aa7 | 2694 | bool |
f6ac5f3d | 2695 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2696 | { |
f6ac5f3d | 2697 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2698 | { |
2699 | struct thread_info *tp = inferior_thread (); | |
2700 | ||
2701 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2702 | } | |
2703 | ||
b6a8c27b | 2704 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2705 | } |
2706 | ||
f6ac5f3d | 2707 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2708 | record-btrace. */ |
2709 | ||
57810aa7 | 2710 | bool |
f6ac5f3d | 2711 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2712 | { |
f6ac5f3d | 2713 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2714 | return true; |
52834460 | 2715 | |
b6a8c27b | 2716 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2717 | } |
2718 | ||
f6ac5f3d | 2719 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2720 | |
f6ac5f3d PA |
2721 | void |
2722 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2723 | { |
e8032dde | 2724 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2725 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2726 | return; |
2727 | ||
2728 | /* Forward the request. */ | |
b6a8c27b | 2729 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2730 | } |
2731 | ||
f6ac5f3d | 2732 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2733 | |
57810aa7 | 2734 | bool |
f6ac5f3d | 2735 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2736 | { |
2737 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2738 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2739 | return true; |
e2887aa3 MM |
2740 | |
2741 | /* Forward the request. */ | |
b6a8c27b | 2742 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2743 | } |
2744 | ||
066ce621 MM |
2745 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2746 | is stopped. */ | |
2747 | ||
2748 | static void | |
2749 | record_btrace_set_replay (struct thread_info *tp, | |
2750 | const struct btrace_insn_iterator *it) | |
2751 | { | |
2752 | struct btrace_thread_info *btinfo; | |
2753 | ||
2754 | btinfo = &tp->btrace; | |
2755 | ||
a0f1b963 | 2756 | if (it == NULL) |
52834460 | 2757 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2758 | else |
2759 | { | |
2760 | if (btinfo->replay == NULL) | |
52834460 | 2761 | record_btrace_start_replaying (tp); |
066ce621 MM |
2762 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2763 | return; | |
2764 | ||
2765 | *btinfo->replay = *it; | |
00431a78 | 2766 | registers_changed_thread (tp); |
066ce621 MM |
2767 | } |
2768 | ||
52834460 MM |
2769 | /* Start anew from the new replay position. */ |
2770 | record_btrace_clear_histories (btinfo); | |
485668e5 | 2771 | |
f2ffa92b PA |
2772 | inferior_thread ()->suspend.stop_pc |
2773 | = regcache_read_pc (get_current_regcache ()); | |
485668e5 | 2774 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
066ce621 MM |
2775 | } |
2776 | ||
f6ac5f3d | 2777 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2778 | |
f6ac5f3d PA |
2779 | void |
2780 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2781 | { |
2782 | struct thread_info *tp; | |
2783 | struct btrace_insn_iterator begin; | |
2784 | ||
2785 | tp = require_btrace_thread (); | |
2786 | ||
2787 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2788 | |
2789 | /* Skip gaps at the beginning of the trace. */ | |
2790 | while (btrace_insn_get (&begin) == NULL) | |
2791 | { | |
2792 | unsigned int steps; | |
2793 | ||
2794 | steps = btrace_insn_next (&begin, 1); | |
2795 | if (steps == 0) | |
2796 | error (_("No trace.")); | |
2797 | } | |
2798 | ||
066ce621 | 2799 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2800 | } |
2801 | ||
f6ac5f3d | 2802 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2803 | |
f6ac5f3d PA |
2804 | void |
2805 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2806 | { |
2807 | struct thread_info *tp; | |
2808 | ||
2809 | tp = require_btrace_thread (); | |
2810 | ||
2811 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2812 | } |
2813 | ||
f6ac5f3d | 2814 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2815 | |
f6ac5f3d PA |
2816 | void |
2817 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2818 | { |
2819 | struct thread_info *tp; | |
2820 | struct btrace_insn_iterator it; | |
2821 | unsigned int number; | |
2822 | int found; | |
2823 | ||
2824 | number = insn; | |
2825 | ||
2826 | /* Check for wrap-arounds. */ | |
2827 | if (number != insn) | |
2828 | error (_("Instruction number out of range.")); | |
2829 | ||
2830 | tp = require_btrace_thread (); | |
2831 | ||
2832 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2833 | |
2834 | /* Check if the instruction could not be found or is a gap. */ | |
2835 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2836 | error (_("No such instruction.")); |
2837 | ||
2838 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2839 | } |
2840 | ||
f6ac5f3d | 2841 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2842 | |
f6ac5f3d PA |
2843 | void |
2844 | record_btrace_target::record_stop_replaying () | |
797094dd | 2845 | { |
08036331 | 2846 | for (thread_info *tp : all_non_exited_threads ()) |
797094dd MM |
2847 | record_btrace_stop_replaying (tp); |
2848 | } | |
2849 | ||
f6ac5f3d | 2850 | /* The execution_direction target method. */ |
70ad5bff | 2851 | |
f6ac5f3d PA |
2852 | enum exec_direction_kind |
2853 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2854 | { |
2855 | return record_btrace_resume_exec_dir; | |
2856 | } | |
2857 | ||
f6ac5f3d | 2858 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2859 | |
f6ac5f3d PA |
2860 | void |
2861 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2862 | { |
2863 | record_btrace_generating_corefile = 1; | |
2864 | } | |
2865 | ||
f6ac5f3d | 2866 | /* The done_generating_core target method. */ |
aef92902 | 2867 | |
f6ac5f3d PA |
2868 | void |
2869 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2870 | { |
2871 | record_btrace_generating_corefile = 0; | |
2872 | } | |
2873 | ||
f4abbc16 MM |
2874 | /* Start recording in BTS format. */ |
2875 | ||
2876 | static void | |
cdb34d4a | 2877 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2878 | { |
f4abbc16 MM |
2879 | if (args != NULL && *args != 0) |
2880 | error (_("Invalid argument.")); | |
2881 | ||
2882 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2883 | ||
a70b8144 | 2884 | try |
492d29ea | 2885 | { |
95a6b0a1 | 2886 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2887 | } |
230d2906 | 2888 | catch (const gdb_exception &exception) |
f4abbc16 MM |
2889 | { |
2890 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2891 | throw; |
f4abbc16 MM |
2892 | } |
2893 | } | |
2894 | ||
bc504a31 | 2895 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2896 | |
2897 | static void | |
cdb34d4a | 2898 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2899 | { |
2900 | if (args != NULL && *args != 0) | |
2901 | error (_("Invalid argument.")); | |
2902 | ||
b20a6524 | 2903 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2904 | |
a70b8144 | 2905 | try |
492d29ea | 2906 | { |
95a6b0a1 | 2907 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2908 | } |
230d2906 | 2909 | catch (const gdb_exception &exception) |
492d29ea PA |
2910 | { |
2911 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2912 | throw; |
492d29ea | 2913 | } |
afedecd3 MM |
2914 | } |
2915 | ||
b20a6524 MM |
2916 | /* Alias for "target record". */ |
2917 | ||
2918 | static void | |
981a3fb3 | 2919 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2920 | { |
2921 | if (args != NULL && *args != 0) | |
2922 | error (_("Invalid argument.")); | |
2923 | ||
2924 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2925 | ||
a70b8144 | 2926 | try |
b20a6524 | 2927 | { |
95a6b0a1 | 2928 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2929 | } |
230d2906 | 2930 | catch (const gdb_exception &exception) |
b20a6524 MM |
2931 | { |
2932 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2933 | ||
a70b8144 | 2934 | try |
b20a6524 | 2935 | { |
95a6b0a1 | 2936 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2937 | } |
230d2906 | 2938 | catch (const gdb_exception &ex) |
b20a6524 MM |
2939 | { |
2940 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2941 | throw; |
b20a6524 | 2942 | } |
b20a6524 | 2943 | } |
b20a6524 MM |
2944 | } |
2945 | ||
67b5c0c1 MM |
2946 | /* The "set record btrace" command. */ |
2947 | ||
2948 | static void | |
981a3fb3 | 2949 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2950 | { |
b85310e1 MM |
2951 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2952 | "by an appropriate subcommand.\n")); | |
2953 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
2954 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
2955 | } |
2956 | ||
2957 | /* The "show record btrace" command. */ | |
2958 | ||
2959 | static void | |
981a3fb3 | 2960 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
2961 | { |
2962 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2963 | } | |
2964 | ||
2965 | /* The "show record btrace replay-memory-access" command. */ | |
2966 | ||
2967 | static void | |
2968 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2969 | struct cmd_list_element *c, const char *value) | |
2970 | { | |
2971 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2972 | replay_memory_access); | |
2973 | } | |
2974 | ||
4a4495d6 MM |
2975 | /* The "set record btrace cpu none" command. */ |
2976 | ||
2977 | static void | |
2978 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
2979 | { | |
2980 | if (args != nullptr && *args != 0) | |
2981 | error (_("Trailing junk: '%s'."), args); | |
2982 | ||
2983 | record_btrace_cpu_state = CS_NONE; | |
2984 | } | |
2985 | ||
2986 | /* The "set record btrace cpu auto" command. */ | |
2987 | ||
2988 | static void | |
2989 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
2990 | { | |
2991 | if (args != nullptr && *args != 0) | |
2992 | error (_("Trailing junk: '%s'."), args); | |
2993 | ||
2994 | record_btrace_cpu_state = CS_AUTO; | |
2995 | } | |
2996 | ||
2997 | /* The "set record btrace cpu" command. */ | |
2998 | ||
2999 | static void | |
3000 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3001 | { | |
3002 | if (args == nullptr) | |
3003 | args = ""; | |
3004 | ||
3005 | /* We use a hard-coded vendor string for now. */ | |
3006 | unsigned int family, model, stepping; | |
3007 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3008 | &model, &l1, &stepping, &l2); | |
3009 | if (matches == 3) | |
3010 | { | |
3011 | if (strlen (args) != l2) | |
3012 | error (_("Trailing junk: '%s'."), args + l2); | |
3013 | } | |
3014 | else if (matches == 2) | |
3015 | { | |
3016 | if (strlen (args) != l1) | |
3017 | error (_("Trailing junk: '%s'."), args + l1); | |
3018 | ||
3019 | stepping = 0; | |
3020 | } | |
3021 | else | |
3022 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3023 | ||
3024 | if (USHRT_MAX < family) | |
3025 | error (_("Cpu family too big.")); | |
3026 | ||
3027 | if (UCHAR_MAX < model) | |
3028 | error (_("Cpu model too big.")); | |
3029 | ||
3030 | if (UCHAR_MAX < stepping) | |
3031 | error (_("Cpu stepping too big.")); | |
3032 | ||
3033 | record_btrace_cpu.vendor = CV_INTEL; | |
3034 | record_btrace_cpu.family = family; | |
3035 | record_btrace_cpu.model = model; | |
3036 | record_btrace_cpu.stepping = stepping; | |
3037 | ||
3038 | record_btrace_cpu_state = CS_CPU; | |
3039 | } | |
3040 | ||
3041 | /* The "show record btrace cpu" command. */ | |
3042 | ||
3043 | static void | |
3044 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3045 | { | |
4a4495d6 MM |
3046 | if (args != nullptr && *args != 0) |
3047 | error (_("Trailing junk: '%s'."), args); | |
3048 | ||
3049 | switch (record_btrace_cpu_state) | |
3050 | { | |
3051 | case CS_AUTO: | |
3052 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3053 | return; | |
3054 | ||
3055 | case CS_NONE: | |
3056 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3057 | return; | |
3058 | ||
3059 | case CS_CPU: | |
3060 | switch (record_btrace_cpu.vendor) | |
3061 | { | |
3062 | case CV_INTEL: | |
3063 | if (record_btrace_cpu.stepping == 0) | |
3064 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3065 | record_btrace_cpu.family, | |
3066 | record_btrace_cpu.model); | |
3067 | else | |
3068 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3069 | record_btrace_cpu.family, | |
3070 | record_btrace_cpu.model, | |
3071 | record_btrace_cpu.stepping); | |
3072 | return; | |
3073 | } | |
3074 | } | |
3075 | ||
3076 | error (_("Internal error: bad cpu state.")); | |
3077 | } | |
3078 | ||
3079 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3080 | |
3081 | static void | |
981a3fb3 | 3082 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3083 | { |
3084 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3085 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3086 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3087 | all_commands, gdb_stdout); | |
3088 | } | |
3089 | ||
3090 | /* The "show record btrace bts" command. */ | |
3091 | ||
3092 | static void | |
981a3fb3 | 3093 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3094 | { |
3095 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3096 | } | |
3097 | ||
b20a6524 MM |
3098 | /* The "set record btrace pt" command. */ |
3099 | ||
3100 | static void | |
981a3fb3 | 3101 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3102 | { |
3103 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3104 | "by an appropriate subcommand.\n")); | |
3105 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3106 | all_commands, gdb_stdout); | |
3107 | } | |
3108 | ||
3109 | /* The "show record btrace pt" command. */ | |
3110 | ||
3111 | static void | |
981a3fb3 | 3112 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3113 | { |
3114 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3115 | } | |
3116 | ||
3117 | /* The "record bts buffer-size" show value function. */ | |
3118 | ||
3119 | static void | |
3120 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3121 | struct cmd_list_element *c, | |
3122 | const char *value) | |
3123 | { | |
3124 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3125 | value); | |
3126 | } | |
3127 | ||
3128 | /* The "record pt buffer-size" show value function. */ | |
3129 | ||
3130 | static void | |
3131 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3132 | struct cmd_list_element *c, | |
3133 | const char *value) | |
3134 | { | |
3135 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3136 | value); | |
3137 | } | |
3138 | ||
afedecd3 MM |
3139 | /* Initialize btrace commands. */ |
3140 | ||
3141 | void | |
3142 | _initialize_record_btrace (void) | |
3143 | { | |
f4abbc16 MM |
3144 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3145 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3146 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3147 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3148 | ||
f4abbc16 MM |
3149 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3150 | _("\ | |
3151 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3152 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3153 | This format may not be available on all processors."), | |
3154 | &record_btrace_cmdlist); | |
3155 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3156 | ||
b20a6524 MM |
3157 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3158 | _("\ | |
bc504a31 | 3159 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3160 | This format may not be available on all processors."), |
3161 | &record_btrace_cmdlist); | |
3162 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3163 | ||
67b5c0c1 | 3164 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
590042fc | 3165 | _("Set record options."), &set_record_btrace_cmdlist, |
67b5c0c1 MM |
3166 | "set record btrace ", 0, &set_record_cmdlist); |
3167 | ||
3168 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
590042fc | 3169 | _("Show record options."), &show_record_btrace_cmdlist, |
67b5c0c1 MM |
3170 | "show record btrace ", 0, &show_record_cmdlist); |
3171 | ||
3172 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3173 | replay_memory_access_types, &replay_memory_access, _("\ | |
3174 | Set what memory accesses are allowed during replay."), _("\ | |
3175 | Show what memory accesses are allowed during replay."), | |
3176 | _("Default is READ-ONLY.\n\n\ | |
3177 | The btrace record target does not trace data.\n\ | |
3178 | The memory therefore corresponds to the live target and not \ | |
3179 | to the current replay position.\n\n\ | |
3180 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3181 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3182 | replay."), | |
3183 | NULL, cmd_show_replay_memory_access, | |
3184 | &set_record_btrace_cmdlist, | |
3185 | &show_record_btrace_cmdlist); | |
3186 | ||
4a4495d6 MM |
3187 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3188 | _("\ | |
3189 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3190 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3191 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3192 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3193 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3194 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3195 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3196 | When set to \"none\", errata workarounds are disabled."), | |
3197 | &set_record_btrace_cpu_cmdlist, | |
590042fc | 3198 | "set record btrace cpu ", 1, |
4a4495d6 MM |
3199 | &set_record_btrace_cmdlist); |
3200 | ||
3201 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3202 | Automatically determine the cpu to be used for trace decode."), | |
3203 | &set_record_btrace_cpu_cmdlist); | |
3204 | ||
3205 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3206 | Do not enable errata workarounds for trace decode."), | |
3207 | &set_record_btrace_cpu_cmdlist); | |
3208 | ||
3209 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3210 | Show the cpu to be used for trace decode."), | |
3211 | &show_record_btrace_cmdlist); | |
3212 | ||
d33501a5 | 3213 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
590042fc | 3214 | _("Set record btrace bts options."), |
d33501a5 MM |
3215 | &set_record_btrace_bts_cmdlist, |
3216 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3217 | ||
3218 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
590042fc | 3219 | _("Show record btrace bts options."), |
d33501a5 MM |
3220 | &show_record_btrace_bts_cmdlist, |
3221 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3222 | ||
3223 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3224 | &record_btrace_conf.bts.size, | |
3225 | _("Set the record/replay bts buffer size."), | |
3226 | _("Show the record/replay bts buffer size."), _("\ | |
3227 | When starting recording request a trace buffer of this size. \ | |
3228 | The actual buffer size may differ from the requested size. \ | |
3229 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3230 | Bigger buffers allow longer recording but also take more time to process \ | |
3231 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3232 | The trace buffer size may not be changed while recording."), NULL, |
3233 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3234 | &set_record_btrace_bts_cmdlist, |
3235 | &show_record_btrace_bts_cmdlist); | |
3236 | ||
b20a6524 | 3237 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
590042fc | 3238 | _("Set record btrace pt options."), |
b20a6524 MM |
3239 | &set_record_btrace_pt_cmdlist, |
3240 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3241 | ||
3242 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
590042fc | 3243 | _("Show record btrace pt options."), |
b20a6524 MM |
3244 | &show_record_btrace_pt_cmdlist, |
3245 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3246 | ||
3247 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3248 | &record_btrace_conf.pt.size, | |
3249 | _("Set the record/replay pt buffer size."), | |
3250 | _("Show the record/replay pt buffer size."), _("\ | |
3251 | Bigger buffers allow longer recording but also take more time to process \ | |
3252 | the recorded execution.\n\ | |
3253 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3254 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3255 | &set_record_btrace_pt_cmdlist, | |
3256 | &show_record_btrace_pt_cmdlist); | |
3257 | ||
d9f719f1 | 3258 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3259 | |
3260 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3261 | xcalloc, xfree); | |
d33501a5 MM |
3262 | |
3263 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3264 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3265 | } |