Commit | Line | Data |
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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2013-2020 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 | ||
40c94099 | 544 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format.")); |
d33501a5 MM |
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 | ||
5b6d1e4f | 559 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
560 | error (_("No thread.")); |
561 | ||
5b6d1e4f PA |
562 | tp = inferior_thread (); |
563 | ||
cd4007e4 MM |
564 | validate_registers_access (); |
565 | ||
f4abbc16 MM |
566 | btinfo = &tp->btrace; |
567 | ||
f6ac5f3d | 568 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 569 | if (conf != NULL) |
d33501a5 | 570 | record_btrace_print_conf (conf); |
f4abbc16 | 571 | |
4a4495d6 | 572 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 573 | |
23a7fe75 MM |
574 | insns = 0; |
575 | calls = 0; | |
31fd9caa | 576 | gaps = 0; |
23a7fe75 | 577 | |
6e07b1d2 | 578 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
579 | { |
580 | struct btrace_call_iterator call; | |
581 | struct btrace_insn_iterator insn; | |
582 | ||
583 | btrace_call_end (&call, btinfo); | |
584 | btrace_call_prev (&call, 1); | |
5de9129b | 585 | calls = btrace_call_number (&call); |
23a7fe75 MM |
586 | |
587 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 588 | insns = btrace_insn_number (&insn); |
31fd9caa | 589 | |
69090cee TW |
590 | /* If the last instruction is not a gap, it is the current instruction |
591 | that is not actually part of the record. */ | |
592 | if (btrace_insn_get (&insn) != NULL) | |
593 | insns -= 1; | |
31fd9caa MM |
594 | |
595 | gaps = btinfo->ngaps; | |
23a7fe75 | 596 | } |
afedecd3 | 597 | |
31fd9caa | 598 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 | 599 | "for thread %s (%s).\n"), insns, calls, gaps, |
a068643d TT |
600 | print_thread_id (tp), |
601 | target_pid_to_str (tp->ptid).c_str ()); | |
07bbe694 MM |
602 | |
603 | if (btrace_is_replaying (tp)) | |
604 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
605 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
606 | } |
607 | ||
31fd9caa MM |
608 | /* Print a decode error. */ |
609 | ||
610 | static void | |
611 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
612 | enum btrace_format format) | |
613 | { | |
508352a9 | 614 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 615 | |
112e8700 | 616 | uiout->text (_("[")); |
508352a9 TW |
617 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
618 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 619 | { |
112e8700 | 620 | uiout->text (_("decode error (")); |
381befee | 621 | uiout->field_signed ("errcode", errcode); |
112e8700 | 622 | uiout->text (_("): ")); |
31fd9caa | 623 | } |
112e8700 SM |
624 | uiout->text (errstr); |
625 | uiout->text (_("]\n")); | |
31fd9caa MM |
626 | } |
627 | ||
f94cc897 MM |
628 | /* A range of source lines. */ |
629 | ||
630 | struct btrace_line_range | |
631 | { | |
632 | /* The symtab this line is from. */ | |
633 | struct symtab *symtab; | |
634 | ||
635 | /* The first line (inclusive). */ | |
636 | int begin; | |
637 | ||
638 | /* The last line (exclusive). */ | |
639 | int end; | |
640 | }; | |
641 | ||
642 | /* Construct a line range. */ | |
643 | ||
644 | static struct btrace_line_range | |
645 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
646 | { | |
647 | struct btrace_line_range range; | |
648 | ||
649 | range.symtab = symtab; | |
650 | range.begin = begin; | |
651 | range.end = end; | |
652 | ||
653 | return range; | |
654 | } | |
655 | ||
656 | /* Add a line to a line range. */ | |
657 | ||
658 | static struct btrace_line_range | |
659 | btrace_line_range_add (struct btrace_line_range range, int line) | |
660 | { | |
661 | if (range.end <= range.begin) | |
662 | { | |
663 | /* This is the first entry. */ | |
664 | range.begin = line; | |
665 | range.end = line + 1; | |
666 | } | |
667 | else if (line < range.begin) | |
668 | range.begin = line; | |
669 | else if (range.end < line) | |
670 | range.end = line; | |
671 | ||
672 | return range; | |
673 | } | |
674 | ||
675 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
676 | ||
677 | static int | |
678 | btrace_line_range_is_empty (struct btrace_line_range range) | |
679 | { | |
680 | return range.end <= range.begin; | |
681 | } | |
682 | ||
683 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
684 | ||
685 | static int | |
686 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
687 | struct btrace_line_range rhs) | |
688 | { | |
689 | return ((lhs.symtab == rhs.symtab) | |
690 | && (lhs.begin <= rhs.begin) | |
691 | && (rhs.end <= lhs.end)); | |
692 | } | |
693 | ||
694 | /* Find the line range associated with PC. */ | |
695 | ||
696 | static struct btrace_line_range | |
697 | btrace_find_line_range (CORE_ADDR pc) | |
698 | { | |
699 | struct btrace_line_range range; | |
700 | struct linetable_entry *lines; | |
701 | struct linetable *ltable; | |
702 | struct symtab *symtab; | |
703 | int nlines, i; | |
704 | ||
705 | symtab = find_pc_line_symtab (pc); | |
706 | if (symtab == NULL) | |
707 | return btrace_mk_line_range (NULL, 0, 0); | |
708 | ||
709 | ltable = SYMTAB_LINETABLE (symtab); | |
710 | if (ltable == NULL) | |
711 | return btrace_mk_line_range (symtab, 0, 0); | |
712 | ||
713 | nlines = ltable->nitems; | |
714 | lines = ltable->item; | |
715 | if (nlines <= 0) | |
716 | return btrace_mk_line_range (symtab, 0, 0); | |
717 | ||
718 | range = btrace_mk_line_range (symtab, 0, 0); | |
719 | for (i = 0; i < nlines - 1; i++) | |
720 | { | |
8c95582d AB |
721 | /* The test of is_stmt here was added when the is_stmt field was |
722 | introduced to the 'struct linetable_entry' structure. This | |
723 | ensured that this loop maintained the same behaviour as before we | |
724 | introduced is_stmt. That said, it might be that we would be | |
725 | better off not checking is_stmt here, this would lead to us | |
726 | possibly adding more line numbers to the range. At the time this | |
727 | change was made I was unsure how to test this so chose to go with | |
728 | maintaining the existing experience. */ | |
729 | if ((lines[i].pc == pc) && (lines[i].line != 0) | |
730 | && (lines[i].is_stmt == 1)) | |
f94cc897 MM |
731 | range = btrace_line_range_add (range, lines[i].line); |
732 | } | |
733 | ||
734 | return range; | |
735 | } | |
736 | ||
737 | /* Print source lines in LINES to UIOUT. | |
738 | ||
739 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
740 | instructions corresponding to that source line. When printing a new source | |
741 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
742 | the new source line. If the source line range in LINES is not empty, this | |
743 | function will leave the cleanup chain for the last printed source line open | |
744 | so instructions can be added to it. */ | |
745 | ||
746 | static void | |
747 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
748 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
749 | gdb::optional<ui_out_emit_list> *asm_list, | |
750 | gdb_disassembly_flags flags) | |
f94cc897 | 751 | { |
8d297bbf | 752 | print_source_lines_flags psl_flags; |
f94cc897 | 753 | |
f94cc897 MM |
754 | if (flags & DISASSEMBLY_FILENAME) |
755 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
756 | ||
7ea78b59 | 757 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 758 | { |
7ea78b59 | 759 | asm_list->reset (); |
f94cc897 | 760 | |
7ea78b59 | 761 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
762 | |
763 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
764 | ||
7ea78b59 | 765 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
766 | } |
767 | } | |
768 | ||
afedecd3 MM |
769 | /* Disassemble a section of the recorded instruction trace. */ |
770 | ||
771 | static void | |
23a7fe75 | 772 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 773 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 774 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
775 | const struct btrace_insn_iterator *end, |
776 | gdb_disassembly_flags flags) | |
afedecd3 | 777 | { |
9a24775b PA |
778 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
779 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 780 | |
f94cc897 MM |
781 | flags |= DISASSEMBLY_SPECULATIVE; |
782 | ||
7ea78b59 SM |
783 | struct gdbarch *gdbarch = target_gdbarch (); |
784 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 785 | |
7ea78b59 | 786 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 787 | |
7ea78b59 SM |
788 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
789 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 790 | |
046bebe1 | 791 | gdb_pretty_print_disassembler disasm (gdbarch, uiout); |
8b172ce7 | 792 | |
7ea78b59 SM |
793 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
794 | btrace_insn_next (&it, 1)) | |
afedecd3 | 795 | { |
23a7fe75 MM |
796 | const struct btrace_insn *insn; |
797 | ||
798 | insn = btrace_insn_get (&it); | |
799 | ||
31fd9caa MM |
800 | /* A NULL instruction indicates a gap in the trace. */ |
801 | if (insn == NULL) | |
802 | { | |
803 | const struct btrace_config *conf; | |
804 | ||
805 | conf = btrace_conf (btinfo); | |
afedecd3 | 806 | |
31fd9caa MM |
807 | /* We have trace so we must have a configuration. */ |
808 | gdb_assert (conf != NULL); | |
809 | ||
69090cee TW |
810 | uiout->field_fmt ("insn-number", "%u", |
811 | btrace_insn_number (&it)); | |
812 | uiout->text ("\t"); | |
813 | ||
814 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
815 | conf->format); |
816 | } | |
817 | else | |
818 | { | |
f94cc897 | 819 | struct disasm_insn dinsn; |
da8c46d2 | 820 | |
f94cc897 | 821 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 822 | { |
f94cc897 MM |
823 | struct btrace_line_range lines; |
824 | ||
825 | lines = btrace_find_line_range (insn->pc); | |
826 | if (!btrace_line_range_is_empty (lines) | |
827 | && !btrace_line_range_contains_range (last_lines, lines)) | |
828 | { | |
7ea78b59 SM |
829 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
830 | flags); | |
f94cc897 MM |
831 | last_lines = lines; |
832 | } | |
7ea78b59 | 833 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 834 | { |
7ea78b59 SM |
835 | gdb_assert (!asm_list.has_value ()); |
836 | ||
837 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
838 | ||
f94cc897 | 839 | /* No source information. */ |
7ea78b59 | 840 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
841 | } |
842 | ||
7ea78b59 SM |
843 | gdb_assert (src_and_asm_tuple.has_value ()); |
844 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 845 | } |
da8c46d2 | 846 | |
f94cc897 MM |
847 | memset (&dinsn, 0, sizeof (dinsn)); |
848 | dinsn.number = btrace_insn_number (&it); | |
849 | dinsn.addr = insn->pc; | |
31fd9caa | 850 | |
da8c46d2 | 851 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 852 | dinsn.is_speculative = 1; |
da8c46d2 | 853 | |
046bebe1 | 854 | disasm.pretty_print_insn (&dinsn, flags); |
31fd9caa | 855 | } |
afedecd3 MM |
856 | } |
857 | } | |
858 | ||
f6ac5f3d | 859 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 860 | |
f6ac5f3d PA |
861 | void |
862 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
863 | { |
864 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
865 | struct btrace_insn_history *history; |
866 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 867 | struct ui_out *uiout; |
23a7fe75 | 868 | unsigned int context, covered; |
afedecd3 MM |
869 | |
870 | uiout = current_uiout; | |
2e783024 | 871 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 872 | context = abs (size); |
afedecd3 MM |
873 | if (context == 0) |
874 | error (_("Bad record instruction-history-size.")); | |
875 | ||
23a7fe75 MM |
876 | btinfo = require_btrace (); |
877 | history = btinfo->insn_history; | |
878 | if (history == NULL) | |
afedecd3 | 879 | { |
07bbe694 | 880 | struct btrace_insn_iterator *replay; |
afedecd3 | 881 | |
9a24775b | 882 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 883 | |
07bbe694 MM |
884 | /* If we're replaying, we start at the replay position. Otherwise, we |
885 | start at the tail of the trace. */ | |
886 | replay = btinfo->replay; | |
887 | if (replay != NULL) | |
888 | begin = *replay; | |
889 | else | |
890 | btrace_insn_end (&begin, btinfo); | |
891 | ||
892 | /* We start from here and expand in the requested direction. Then we | |
893 | expand in the other direction, as well, to fill up any remaining | |
894 | context. */ | |
895 | end = begin; | |
896 | if (size < 0) | |
897 | { | |
898 | /* We want the current position covered, as well. */ | |
899 | covered = btrace_insn_next (&end, 1); | |
900 | covered += btrace_insn_prev (&begin, context - covered); | |
901 | covered += btrace_insn_next (&end, context - covered); | |
902 | } | |
903 | else | |
904 | { | |
905 | covered = btrace_insn_next (&end, context); | |
906 | covered += btrace_insn_prev (&begin, context - covered); | |
907 | } | |
afedecd3 MM |
908 | } |
909 | else | |
910 | { | |
23a7fe75 MM |
911 | begin = history->begin; |
912 | end = history->end; | |
afedecd3 | 913 | |
9a24775b | 914 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 915 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 916 | |
23a7fe75 MM |
917 | if (size < 0) |
918 | { | |
919 | end = begin; | |
920 | covered = btrace_insn_prev (&begin, context); | |
921 | } | |
922 | else | |
923 | { | |
924 | begin = end; | |
925 | covered = btrace_insn_next (&end, context); | |
926 | } | |
afedecd3 MM |
927 | } |
928 | ||
23a7fe75 | 929 | if (covered > 0) |
31fd9caa | 930 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
931 | else |
932 | { | |
933 | if (size < 0) | |
934 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
935 | else | |
936 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
937 | } | |
afedecd3 | 938 | |
23a7fe75 | 939 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
940 | } |
941 | ||
f6ac5f3d | 942 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 943 | |
f6ac5f3d PA |
944 | void |
945 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
946 | gdb_disassembly_flags flags) | |
afedecd3 MM |
947 | { |
948 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 949 | struct btrace_insn_iterator begin, end; |
afedecd3 | 950 | struct ui_out *uiout; |
23a7fe75 MM |
951 | unsigned int low, high; |
952 | int found; | |
afedecd3 MM |
953 | |
954 | uiout = current_uiout; | |
2e783024 | 955 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
956 | low = from; |
957 | high = to; | |
afedecd3 | 958 | |
9a24775b | 959 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
960 | |
961 | /* Check for wrap-arounds. */ | |
23a7fe75 | 962 | if (low != from || high != to) |
afedecd3 MM |
963 | error (_("Bad range.")); |
964 | ||
0688d04e | 965 | if (high < low) |
afedecd3 MM |
966 | error (_("Bad range.")); |
967 | ||
23a7fe75 | 968 | btinfo = require_btrace (); |
afedecd3 | 969 | |
23a7fe75 MM |
970 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
971 | if (found == 0) | |
972 | error (_("Range out of bounds.")); | |
afedecd3 | 973 | |
23a7fe75 MM |
974 | found = btrace_find_insn_by_number (&end, btinfo, high); |
975 | if (found == 0) | |
0688d04e MM |
976 | { |
977 | /* Silently truncate the range. */ | |
978 | btrace_insn_end (&end, btinfo); | |
979 | } | |
980 | else | |
981 | { | |
982 | /* We want both begin and end to be inclusive. */ | |
983 | btrace_insn_next (&end, 1); | |
984 | } | |
afedecd3 | 985 | |
31fd9caa | 986 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 987 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
988 | } |
989 | ||
f6ac5f3d | 990 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 991 | |
f6ac5f3d PA |
992 | void |
993 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
994 | gdb_disassembly_flags flags) | |
afedecd3 MM |
995 | { |
996 | ULONGEST begin, end, context; | |
997 | ||
998 | context = abs (size); | |
0688d04e MM |
999 | if (context == 0) |
1000 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
1001 | |
1002 | if (size < 0) | |
1003 | { | |
1004 | end = from; | |
1005 | ||
1006 | if (from < context) | |
1007 | begin = 0; | |
1008 | else | |
0688d04e | 1009 | begin = from - context + 1; |
afedecd3 MM |
1010 | } |
1011 | else | |
1012 | { | |
1013 | begin = from; | |
0688d04e | 1014 | end = from + context - 1; |
afedecd3 MM |
1015 | |
1016 | /* Check for wrap-around. */ | |
1017 | if (end < begin) | |
1018 | end = ULONGEST_MAX; | |
1019 | } | |
1020 | ||
f6ac5f3d | 1021 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1022 | } |
1023 | ||
1024 | /* Print the instruction number range for a function call history line. */ | |
1025 | ||
1026 | static void | |
23a7fe75 MM |
1027 | btrace_call_history_insn_range (struct ui_out *uiout, |
1028 | const struct btrace_function *bfun) | |
afedecd3 | 1029 | { |
7acbe133 MM |
1030 | unsigned int begin, end, size; |
1031 | ||
0860c437 | 1032 | size = bfun->insn.size (); |
7acbe133 | 1033 | gdb_assert (size > 0); |
afedecd3 | 1034 | |
23a7fe75 | 1035 | begin = bfun->insn_offset; |
7acbe133 | 1036 | end = begin + size - 1; |
afedecd3 | 1037 | |
1f77b012 | 1038 | uiout->field_unsigned ("insn begin", begin); |
112e8700 | 1039 | uiout->text (","); |
1f77b012 | 1040 | uiout->field_unsigned ("insn end", end); |
afedecd3 MM |
1041 | } |
1042 | ||
ce0dfbea MM |
1043 | /* Compute the lowest and highest source line for the instructions in BFUN |
1044 | and return them in PBEGIN and PEND. | |
1045 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1046 | result from inlining or macro expansion. */ | |
1047 | ||
1048 | static void | |
1049 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1050 | int *pbegin, int *pend) | |
1051 | { | |
ce0dfbea MM |
1052 | struct symtab *symtab; |
1053 | struct symbol *sym; | |
ce0dfbea MM |
1054 | int begin, end; |
1055 | ||
1056 | begin = INT_MAX; | |
1057 | end = INT_MIN; | |
1058 | ||
1059 | sym = bfun->sym; | |
1060 | if (sym == NULL) | |
1061 | goto out; | |
1062 | ||
1063 | symtab = symbol_symtab (sym); | |
1064 | ||
0860c437 | 1065 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1066 | { |
1067 | struct symtab_and_line sal; | |
1068 | ||
0860c437 | 1069 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1070 | if (sal.symtab != symtab || sal.line == 0) |
1071 | continue; | |
1072 | ||
325fac50 PA |
1073 | begin = std::min (begin, sal.line); |
1074 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1075 | } |
1076 | ||
1077 | out: | |
1078 | *pbegin = begin; | |
1079 | *pend = end; | |
1080 | } | |
1081 | ||
afedecd3 MM |
1082 | /* Print the source line information for a function call history line. */ |
1083 | ||
1084 | static void | |
23a7fe75 MM |
1085 | btrace_call_history_src_line (struct ui_out *uiout, |
1086 | const struct btrace_function *bfun) | |
afedecd3 MM |
1087 | { |
1088 | struct symbol *sym; | |
23a7fe75 | 1089 | int begin, end; |
afedecd3 MM |
1090 | |
1091 | sym = bfun->sym; | |
1092 | if (sym == NULL) | |
1093 | return; | |
1094 | ||
112e8700 | 1095 | uiout->field_string ("file", |
cbe56571 | 1096 | symtab_to_filename_for_display (symbol_symtab (sym)), |
e43b10e1 | 1097 | file_name_style.style ()); |
afedecd3 | 1098 | |
ce0dfbea | 1099 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1100 | if (end < begin) |
afedecd3 MM |
1101 | return; |
1102 | ||
112e8700 | 1103 | uiout->text (":"); |
381befee | 1104 | uiout->field_signed ("min line", begin); |
afedecd3 | 1105 | |
23a7fe75 | 1106 | if (end == begin) |
afedecd3 MM |
1107 | return; |
1108 | ||
112e8700 | 1109 | uiout->text (","); |
381befee | 1110 | uiout->field_signed ("max line", end); |
afedecd3 MM |
1111 | } |
1112 | ||
0b722aec MM |
1113 | /* Get the name of a branch trace function. */ |
1114 | ||
1115 | static const char * | |
1116 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1117 | { | |
1118 | struct minimal_symbol *msym; | |
1119 | struct symbol *sym; | |
1120 | ||
1121 | if (bfun == NULL) | |
1122 | return "??"; | |
1123 | ||
1124 | msym = bfun->msym; | |
1125 | sym = bfun->sym; | |
1126 | ||
1127 | if (sym != NULL) | |
987012b8 | 1128 | return sym->print_name (); |
0b722aec | 1129 | else if (msym != NULL) |
c9d95fa3 | 1130 | return msym->print_name (); |
0b722aec MM |
1131 | else |
1132 | return "??"; | |
1133 | } | |
1134 | ||
afedecd3 MM |
1135 | /* Disassemble a section of the recorded function trace. */ |
1136 | ||
1137 | static void | |
23a7fe75 | 1138 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1139 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1140 | const struct btrace_call_iterator *begin, |
1141 | const struct btrace_call_iterator *end, | |
8d297bbf | 1142 | int int_flags) |
afedecd3 | 1143 | { |
23a7fe75 | 1144 | struct btrace_call_iterator it; |
8d297bbf | 1145 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1146 | |
8d297bbf | 1147 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1148 | btrace_call_number (end)); |
afedecd3 | 1149 | |
23a7fe75 | 1150 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1151 | { |
23a7fe75 MM |
1152 | const struct btrace_function *bfun; |
1153 | struct minimal_symbol *msym; | |
1154 | struct symbol *sym; | |
1155 | ||
1156 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1157 | sym = bfun->sym; |
0b722aec | 1158 | msym = bfun->msym; |
23a7fe75 | 1159 | |
afedecd3 | 1160 | /* Print the function index. */ |
1f77b012 | 1161 | uiout->field_unsigned ("index", bfun->number); |
112e8700 | 1162 | uiout->text ("\t"); |
afedecd3 | 1163 | |
31fd9caa MM |
1164 | /* Indicate gaps in the trace. */ |
1165 | if (bfun->errcode != 0) | |
1166 | { | |
1167 | const struct btrace_config *conf; | |
1168 | ||
1169 | conf = btrace_conf (btinfo); | |
1170 | ||
1171 | /* We have trace so we must have a configuration. */ | |
1172 | gdb_assert (conf != NULL); | |
1173 | ||
1174 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1175 | ||
1176 | continue; | |
1177 | } | |
1178 | ||
8710b709 MM |
1179 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1180 | { | |
1181 | int level = bfun->level + btinfo->level, i; | |
1182 | ||
1183 | for (i = 0; i < level; ++i) | |
112e8700 | 1184 | uiout->text (" "); |
8710b709 MM |
1185 | } |
1186 | ||
1187 | if (sym != NULL) | |
987012b8 | 1188 | uiout->field_string ("function", sym->print_name (), |
e43b10e1 | 1189 | function_name_style.style ()); |
8710b709 | 1190 | else if (msym != NULL) |
c9d95fa3 | 1191 | uiout->field_string ("function", msym->print_name (), |
e43b10e1 | 1192 | function_name_style.style ()); |
112e8700 | 1193 | else if (!uiout->is_mi_like_p ()) |
cbe56571 | 1194 | uiout->field_string ("function", "??", |
e43b10e1 | 1195 | function_name_style.style ()); |
8710b709 | 1196 | |
1e038f67 | 1197 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1198 | { |
112e8700 | 1199 | uiout->text (_("\tinst ")); |
23a7fe75 | 1200 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1201 | } |
1202 | ||
1e038f67 | 1203 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1204 | { |
112e8700 | 1205 | uiout->text (_("\tat ")); |
23a7fe75 | 1206 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1207 | } |
1208 | ||
112e8700 | 1209 | uiout->text ("\n"); |
afedecd3 MM |
1210 | } |
1211 | } | |
1212 | ||
f6ac5f3d | 1213 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1214 | |
f6ac5f3d PA |
1215 | void |
1216 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1217 | { |
1218 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1219 | struct btrace_call_history *history; |
1220 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1221 | struct ui_out *uiout; |
23a7fe75 | 1222 | unsigned int context, covered; |
afedecd3 MM |
1223 | |
1224 | uiout = current_uiout; | |
2e783024 | 1225 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1226 | context = abs (size); |
afedecd3 MM |
1227 | if (context == 0) |
1228 | error (_("Bad record function-call-history-size.")); | |
1229 | ||
23a7fe75 MM |
1230 | btinfo = require_btrace (); |
1231 | history = btinfo->call_history; | |
1232 | if (history == NULL) | |
afedecd3 | 1233 | { |
07bbe694 | 1234 | struct btrace_insn_iterator *replay; |
afedecd3 | 1235 | |
0cb7c7b0 | 1236 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1237 | |
07bbe694 MM |
1238 | /* If we're replaying, we start at the replay position. Otherwise, we |
1239 | start at the tail of the trace. */ | |
1240 | replay = btinfo->replay; | |
1241 | if (replay != NULL) | |
1242 | { | |
07bbe694 | 1243 | begin.btinfo = btinfo; |
a0f1b963 | 1244 | begin.index = replay->call_index; |
07bbe694 MM |
1245 | } |
1246 | else | |
1247 | btrace_call_end (&begin, btinfo); | |
1248 | ||
1249 | /* We start from here and expand in the requested direction. Then we | |
1250 | expand in the other direction, as well, to fill up any remaining | |
1251 | context. */ | |
1252 | end = begin; | |
1253 | if (size < 0) | |
1254 | { | |
1255 | /* We want the current position covered, as well. */ | |
1256 | covered = btrace_call_next (&end, 1); | |
1257 | covered += btrace_call_prev (&begin, context - covered); | |
1258 | covered += btrace_call_next (&end, context - covered); | |
1259 | } | |
1260 | else | |
1261 | { | |
1262 | covered = btrace_call_next (&end, context); | |
1263 | covered += btrace_call_prev (&begin, context- covered); | |
1264 | } | |
afedecd3 MM |
1265 | } |
1266 | else | |
1267 | { | |
23a7fe75 MM |
1268 | begin = history->begin; |
1269 | end = history->end; | |
afedecd3 | 1270 | |
0cb7c7b0 | 1271 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1272 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1273 | |
23a7fe75 MM |
1274 | if (size < 0) |
1275 | { | |
1276 | end = begin; | |
1277 | covered = btrace_call_prev (&begin, context); | |
1278 | } | |
1279 | else | |
1280 | { | |
1281 | begin = end; | |
1282 | covered = btrace_call_next (&end, context); | |
1283 | } | |
afedecd3 MM |
1284 | } |
1285 | ||
23a7fe75 | 1286 | if (covered > 0) |
8710b709 | 1287 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1288 | else |
1289 | { | |
1290 | if (size < 0) | |
1291 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1292 | else | |
1293 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1294 | } | |
afedecd3 | 1295 | |
23a7fe75 | 1296 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1297 | } |
1298 | ||
f6ac5f3d | 1299 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1300 | |
f6ac5f3d PA |
1301 | void |
1302 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1303 | record_print_flags flags) | |
afedecd3 MM |
1304 | { |
1305 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1306 | struct btrace_call_iterator begin, end; |
afedecd3 | 1307 | struct ui_out *uiout; |
23a7fe75 MM |
1308 | unsigned int low, high; |
1309 | int found; | |
afedecd3 MM |
1310 | |
1311 | uiout = current_uiout; | |
2e783024 | 1312 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1313 | low = from; |
1314 | high = to; | |
afedecd3 | 1315 | |
0cb7c7b0 | 1316 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1317 | |
1318 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1319 | if (low != from || high != to) |
afedecd3 MM |
1320 | error (_("Bad range.")); |
1321 | ||
0688d04e | 1322 | if (high < low) |
afedecd3 MM |
1323 | error (_("Bad range.")); |
1324 | ||
23a7fe75 | 1325 | btinfo = require_btrace (); |
afedecd3 | 1326 | |
23a7fe75 MM |
1327 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1328 | if (found == 0) | |
1329 | error (_("Range out of bounds.")); | |
afedecd3 | 1330 | |
23a7fe75 MM |
1331 | found = btrace_find_call_by_number (&end, btinfo, high); |
1332 | if (found == 0) | |
0688d04e MM |
1333 | { |
1334 | /* Silently truncate the range. */ | |
1335 | btrace_call_end (&end, btinfo); | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | /* We want both begin and end to be inclusive. */ | |
1340 | btrace_call_next (&end, 1); | |
1341 | } | |
afedecd3 | 1342 | |
8710b709 | 1343 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1344 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1345 | } |
1346 | ||
f6ac5f3d | 1347 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1348 | |
f6ac5f3d PA |
1349 | void |
1350 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1351 | record_print_flags flags) | |
afedecd3 MM |
1352 | { |
1353 | ULONGEST begin, end, context; | |
1354 | ||
1355 | context = abs (size); | |
0688d04e MM |
1356 | if (context == 0) |
1357 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1358 | |
1359 | if (size < 0) | |
1360 | { | |
1361 | end = from; | |
1362 | ||
1363 | if (from < context) | |
1364 | begin = 0; | |
1365 | else | |
0688d04e | 1366 | begin = from - context + 1; |
afedecd3 MM |
1367 | } |
1368 | else | |
1369 | { | |
1370 | begin = from; | |
0688d04e | 1371 | end = from + context - 1; |
afedecd3 MM |
1372 | |
1373 | /* Check for wrap-around. */ | |
1374 | if (end < begin) | |
1375 | end = ULONGEST_MAX; | |
1376 | } | |
1377 | ||
f6ac5f3d | 1378 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1379 | } |
1380 | ||
f6ac5f3d | 1381 | /* The record_method method of target record-btrace. */ |
b158a20f | 1382 | |
f6ac5f3d PA |
1383 | enum record_method |
1384 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1385 | { |
5b6d1e4f PA |
1386 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
1387 | thread_info *const tp = find_thread_ptid (proc_target, ptid); | |
b158a20f TW |
1388 | |
1389 | if (tp == NULL) | |
1390 | error (_("No thread.")); | |
1391 | ||
1392 | if (tp->btrace.target == NULL) | |
1393 | return RECORD_METHOD_NONE; | |
1394 | ||
1395 | return RECORD_METHOD_BTRACE; | |
1396 | } | |
1397 | ||
f6ac5f3d | 1398 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1399 | |
57810aa7 | 1400 | bool |
f6ac5f3d | 1401 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 | 1402 | { |
5b6d1e4f PA |
1403 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
1404 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 | 1405 | if (btrace_is_replaying (tp)) |
57810aa7 | 1406 | return true; |
07bbe694 | 1407 | |
57810aa7 | 1408 | return false; |
07bbe694 MM |
1409 | } |
1410 | ||
f6ac5f3d | 1411 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1412 | |
57810aa7 | 1413 | bool |
f6ac5f3d | 1414 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1415 | { |
f6ac5f3d | 1416 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1417 | } |
1418 | ||
f6ac5f3d | 1419 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1420 | |
f6ac5f3d PA |
1421 | enum target_xfer_status |
1422 | record_btrace_target::xfer_partial (enum target_object object, | |
1423 | const char *annex, gdb_byte *readbuf, | |
1424 | const gdb_byte *writebuf, ULONGEST offset, | |
1425 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1426 | { |
633785ff | 1427 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1428 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1429 | && !record_btrace_generating_corefile |
f6ac5f3d | 1430 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1431 | { |
1432 | switch (object) | |
1433 | { | |
1434 | case TARGET_OBJECT_MEMORY: | |
1435 | { | |
1436 | struct target_section *section; | |
1437 | ||
1438 | /* We do not allow writing memory in general. */ | |
1439 | if (writebuf != NULL) | |
9b409511 YQ |
1440 | { |
1441 | *xfered_len = len; | |
bc113b4e | 1442 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1443 | } |
633785ff MM |
1444 | |
1445 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1446 | section = target_section_by_addr (this, offset); |
633785ff MM |
1447 | if (section != NULL) |
1448 | { | |
1449 | /* Check if the section we found is readonly. */ | |
fd361982 | 1450 | if ((bfd_section_flags (section->the_bfd_section) |
633785ff MM |
1451 | & SEC_READONLY) != 0) |
1452 | { | |
1453 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1454 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1455 | break; |
1456 | } | |
1457 | } | |
1458 | ||
9b409511 | 1459 | *xfered_len = len; |
bc113b4e | 1460 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1461 | } |
1462 | } | |
1463 | } | |
1464 | ||
1465 | /* Forward the request. */ | |
b6a8c27b PA |
1466 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1467 | offset, len, xfered_len); | |
633785ff MM |
1468 | } |
1469 | ||
f6ac5f3d | 1470 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1471 | |
f6ac5f3d PA |
1472 | int |
1473 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1474 | struct bp_target_info *bp_tgt) | |
633785ff | 1475 | { |
67b5c0c1 MM |
1476 | const char *old; |
1477 | int ret; | |
633785ff MM |
1478 | |
1479 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1480 | duration of this function. */ | |
67b5c0c1 MM |
1481 | old = replay_memory_access; |
1482 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1483 | |
1484 | ret = 0; | |
a70b8144 | 1485 | try |
492d29ea | 1486 | { |
b6a8c27b | 1487 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1488 | } |
230d2906 | 1489 | catch (const gdb_exception &except) |
492d29ea | 1490 | { |
6c63c96a | 1491 | replay_memory_access = old; |
eedc3f4f | 1492 | throw; |
492d29ea | 1493 | } |
6c63c96a | 1494 | replay_memory_access = old; |
633785ff MM |
1495 | |
1496 | return ret; | |
1497 | } | |
1498 | ||
f6ac5f3d | 1499 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1500 | |
f6ac5f3d PA |
1501 | int |
1502 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1503 | struct bp_target_info *bp_tgt, | |
1504 | enum remove_bp_reason reason) | |
633785ff | 1505 | { |
67b5c0c1 MM |
1506 | const char *old; |
1507 | int ret; | |
633785ff MM |
1508 | |
1509 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1510 | duration of this function. */ | |
67b5c0c1 MM |
1511 | old = replay_memory_access; |
1512 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1513 | |
1514 | ret = 0; | |
a70b8144 | 1515 | try |
492d29ea | 1516 | { |
b6a8c27b | 1517 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1518 | } |
230d2906 | 1519 | catch (const gdb_exception &except) |
492d29ea | 1520 | { |
6c63c96a | 1521 | replay_memory_access = old; |
eedc3f4f | 1522 | throw; |
492d29ea | 1523 | } |
6c63c96a | 1524 | replay_memory_access = old; |
633785ff MM |
1525 | |
1526 | return ret; | |
1527 | } | |
1528 | ||
f6ac5f3d | 1529 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1530 | |
f6ac5f3d PA |
1531 | void |
1532 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1533 | { |
5b6d1e4f | 1534 | thread_info *tp = find_thread_ptid (regcache->target (), regcache->ptid ()); |
1f3ef581 MM |
1535 | gdb_assert (tp != NULL); |
1536 | ||
5b6d1e4f | 1537 | btrace_insn_iterator *replay = tp->btrace.replay; |
aef92902 | 1538 | if (replay != NULL && !record_btrace_generating_corefile) |
1f3ef581 MM |
1539 | { |
1540 | const struct btrace_insn *insn; | |
1541 | struct gdbarch *gdbarch; | |
1542 | int pcreg; | |
1543 | ||
ac7936df | 1544 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1545 | pcreg = gdbarch_pc_regnum (gdbarch); |
1546 | if (pcreg < 0) | |
1547 | return; | |
1548 | ||
1549 | /* We can only provide the PC register. */ | |
1550 | if (regno >= 0 && regno != pcreg) | |
1551 | return; | |
1552 | ||
1553 | insn = btrace_insn_get (replay); | |
1554 | gdb_assert (insn != NULL); | |
1555 | ||
73e1c03f | 1556 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1557 | } |
1558 | else | |
b6a8c27b | 1559 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1560 | } |
1561 | ||
f6ac5f3d | 1562 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1563 | |
f6ac5f3d PA |
1564 | void |
1565 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1566 | { |
a52eab48 | 1567 | if (!record_btrace_generating_corefile |
222312d3 | 1568 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1569 | error (_("Cannot write registers while replaying.")); |
1f3ef581 | 1570 | |
491144b5 | 1571 | gdb_assert (may_write_registers); |
1f3ef581 | 1572 | |
b6a8c27b | 1573 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1574 | } |
1575 | ||
f6ac5f3d | 1576 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1577 | |
f6ac5f3d PA |
1578 | void |
1579 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1580 | { |
a52eab48 | 1581 | if (!record_btrace_generating_corefile |
222312d3 | 1582 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1583 | return; |
1584 | ||
b6a8c27b | 1585 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1586 | } |
1587 | ||
0b722aec MM |
1588 | /* The branch trace frame cache. */ |
1589 | ||
1590 | struct btrace_frame_cache | |
1591 | { | |
1592 | /* The thread. */ | |
1593 | struct thread_info *tp; | |
1594 | ||
1595 | /* The frame info. */ | |
1596 | struct frame_info *frame; | |
1597 | ||
1598 | /* The branch trace function segment. */ | |
1599 | const struct btrace_function *bfun; | |
1600 | }; | |
1601 | ||
1602 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1603 | ||
1604 | static htab_t bfcache; | |
1605 | ||
1606 | /* hash_f for htab_create_alloc of bfcache. */ | |
1607 | ||
1608 | static hashval_t | |
1609 | bfcache_hash (const void *arg) | |
1610 | { | |
19ba03f4 SM |
1611 | const struct btrace_frame_cache *cache |
1612 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1613 | |
1614 | return htab_hash_pointer (cache->frame); | |
1615 | } | |
1616 | ||
1617 | /* eq_f for htab_create_alloc of bfcache. */ | |
1618 | ||
1619 | static int | |
1620 | bfcache_eq (const void *arg1, const void *arg2) | |
1621 | { | |
19ba03f4 SM |
1622 | const struct btrace_frame_cache *cache1 |
1623 | = (const struct btrace_frame_cache *) arg1; | |
1624 | const struct btrace_frame_cache *cache2 | |
1625 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1626 | |
1627 | return cache1->frame == cache2->frame; | |
1628 | } | |
1629 | ||
1630 | /* Create a new btrace frame cache. */ | |
1631 | ||
1632 | static struct btrace_frame_cache * | |
1633 | bfcache_new (struct frame_info *frame) | |
1634 | { | |
1635 | struct btrace_frame_cache *cache; | |
1636 | void **slot; | |
1637 | ||
1638 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1639 | cache->frame = frame; | |
1640 | ||
1641 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1642 | gdb_assert (*slot == NULL); | |
1643 | *slot = cache; | |
1644 | ||
1645 | return cache; | |
1646 | } | |
1647 | ||
1648 | /* Extract the branch trace function from a branch trace frame. */ | |
1649 | ||
1650 | static const struct btrace_function * | |
1651 | btrace_get_frame_function (struct frame_info *frame) | |
1652 | { | |
1653 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1654 | struct btrace_frame_cache pattern; |
1655 | void **slot; | |
1656 | ||
1657 | pattern.frame = frame; | |
1658 | ||
1659 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1660 | if (slot == NULL) | |
1661 | return NULL; | |
1662 | ||
19ba03f4 | 1663 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1664 | return cache->bfun; |
1665 | } | |
1666 | ||
cecac1ab MM |
1667 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1668 | ||
1669 | static enum unwind_stop_reason | |
1670 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1671 | void **this_cache) | |
1672 | { | |
0b722aec MM |
1673 | const struct btrace_frame_cache *cache; |
1674 | const struct btrace_function *bfun; | |
1675 | ||
19ba03f4 | 1676 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1677 | bfun = cache->bfun; |
1678 | gdb_assert (bfun != NULL); | |
1679 | ||
42bfe59e | 1680 | if (bfun->up == 0) |
0b722aec MM |
1681 | return UNWIND_UNAVAILABLE; |
1682 | ||
1683 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1684 | } |
1685 | ||
1686 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1687 | ||
1688 | static void | |
1689 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1690 | struct frame_id *this_id) | |
1691 | { | |
0b722aec MM |
1692 | const struct btrace_frame_cache *cache; |
1693 | const struct btrace_function *bfun; | |
4aeb0dfc | 1694 | struct btrace_call_iterator it; |
0b722aec MM |
1695 | CORE_ADDR code, special; |
1696 | ||
19ba03f4 | 1697 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1698 | |
1699 | bfun = cache->bfun; | |
1700 | gdb_assert (bfun != NULL); | |
1701 | ||
4aeb0dfc TW |
1702 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1703 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1704 | |
1705 | code = get_frame_func (this_frame); | |
1706 | special = bfun->number; | |
1707 | ||
1708 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1709 | ||
1710 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1711 | btrace_get_bfun_name (cache->bfun), | |
1712 | core_addr_to_string_nz (this_id->code_addr), | |
1713 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1714 | } |
1715 | ||
1716 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1717 | ||
1718 | static struct value * | |
1719 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1720 | void **this_cache, | |
1721 | int regnum) | |
1722 | { | |
0b722aec MM |
1723 | const struct btrace_frame_cache *cache; |
1724 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1725 | struct btrace_call_iterator it; |
0b722aec MM |
1726 | struct gdbarch *gdbarch; |
1727 | CORE_ADDR pc; | |
1728 | int pcreg; | |
1729 | ||
1730 | gdbarch = get_frame_arch (this_frame); | |
1731 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1732 | if (pcreg < 0 || regnum != pcreg) | |
1733 | throw_error (NOT_AVAILABLE_ERROR, | |
1734 | _("Registers are not available in btrace record history")); | |
1735 | ||
19ba03f4 | 1736 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1737 | bfun = cache->bfun; |
1738 | gdb_assert (bfun != NULL); | |
1739 | ||
42bfe59e | 1740 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1741 | throw_error (NOT_AVAILABLE_ERROR, |
1742 | _("No caller in btrace record history")); | |
1743 | ||
42bfe59e TW |
1744 | caller = btrace_call_get (&it); |
1745 | ||
0b722aec | 1746 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1747 | pc = caller->insn.front ().pc; |
0b722aec MM |
1748 | else |
1749 | { | |
0860c437 | 1750 | pc = caller->insn.back ().pc; |
0b722aec MM |
1751 | pc += gdb_insn_length (gdbarch, pc); |
1752 | } | |
1753 | ||
1754 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1755 | btrace_get_bfun_name (bfun), bfun->level, | |
1756 | core_addr_to_string_nz (pc)); | |
1757 | ||
1758 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1759 | } |
1760 | ||
1761 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1762 | ||
1763 | static int | |
1764 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1765 | struct frame_info *this_frame, | |
1766 | void **this_cache) | |
1767 | { | |
0b722aec MM |
1768 | const struct btrace_function *bfun; |
1769 | struct btrace_frame_cache *cache; | |
cecac1ab | 1770 | struct thread_info *tp; |
0b722aec | 1771 | struct frame_info *next; |
cecac1ab MM |
1772 | |
1773 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1774 | tp = inferior_thread (); |
cecac1ab | 1775 | |
0b722aec MM |
1776 | bfun = NULL; |
1777 | next = get_next_frame (this_frame); | |
1778 | if (next == NULL) | |
1779 | { | |
1780 | const struct btrace_insn_iterator *replay; | |
1781 | ||
1782 | replay = tp->btrace.replay; | |
1783 | if (replay != NULL) | |
08c3f6d2 | 1784 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1785 | } |
1786 | else | |
1787 | { | |
1788 | const struct btrace_function *callee; | |
42bfe59e | 1789 | struct btrace_call_iterator it; |
0b722aec MM |
1790 | |
1791 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1792 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1793 | return 0; | |
1794 | ||
1795 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1796 | return 0; | |
1797 | ||
1798 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1799 | } |
1800 | ||
1801 | if (bfun == NULL) | |
1802 | return 0; | |
1803 | ||
1804 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1805 | btrace_get_bfun_name (bfun), bfun->level); | |
1806 | ||
1807 | /* This is our frame. Initialize the frame cache. */ | |
1808 | cache = bfcache_new (this_frame); | |
1809 | cache->tp = tp; | |
1810 | cache->bfun = bfun; | |
1811 | ||
1812 | *this_cache = cache; | |
1813 | return 1; | |
1814 | } | |
1815 | ||
1816 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1817 | ||
1818 | static int | |
1819 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1820 | struct frame_info *this_frame, | |
1821 | void **this_cache) | |
1822 | { | |
1823 | const struct btrace_function *bfun, *callee; | |
1824 | struct btrace_frame_cache *cache; | |
42bfe59e | 1825 | struct btrace_call_iterator it; |
0b722aec | 1826 | struct frame_info *next; |
42bfe59e | 1827 | struct thread_info *tinfo; |
0b722aec MM |
1828 | |
1829 | next = get_next_frame (this_frame); | |
1830 | if (next == NULL) | |
1831 | return 0; | |
1832 | ||
1833 | callee = btrace_get_frame_function (next); | |
1834 | if (callee == NULL) | |
1835 | return 0; | |
1836 | ||
1837 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1838 | return 0; | |
1839 | ||
00431a78 | 1840 | tinfo = inferior_thread (); |
42bfe59e | 1841 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1842 | return 0; |
1843 | ||
42bfe59e TW |
1844 | bfun = btrace_call_get (&it); |
1845 | ||
0b722aec MM |
1846 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1847 | btrace_get_bfun_name (bfun), bfun->level); | |
1848 | ||
1849 | /* This is our frame. Initialize the frame cache. */ | |
1850 | cache = bfcache_new (this_frame); | |
42bfe59e | 1851 | cache->tp = tinfo; |
0b722aec MM |
1852 | cache->bfun = bfun; |
1853 | ||
1854 | *this_cache = cache; | |
1855 | return 1; | |
1856 | } | |
1857 | ||
1858 | static void | |
1859 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1860 | { | |
1861 | struct btrace_frame_cache *cache; | |
1862 | void **slot; | |
1863 | ||
19ba03f4 | 1864 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1865 | |
1866 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1867 | gdb_assert (slot != NULL); | |
1868 | ||
1869 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1870 | } |
1871 | ||
1872 | /* btrace recording does not store previous memory content, neither the stack | |
30baf67b | 1873 | frames content. Any unwinding would return erroneous results as the stack |
cecac1ab MM |
1874 | contents no longer matches the changed PC value restored from history. |
1875 | Therefore this unwinder reports any possibly unwound registers as | |
1876 | <unavailable>. */ | |
1877 | ||
0b722aec | 1878 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1879 | { |
1880 | NORMAL_FRAME, | |
1881 | record_btrace_frame_unwind_stop_reason, | |
1882 | record_btrace_frame_this_id, | |
1883 | record_btrace_frame_prev_register, | |
1884 | NULL, | |
0b722aec MM |
1885 | record_btrace_frame_sniffer, |
1886 | record_btrace_frame_dealloc_cache | |
1887 | }; | |
1888 | ||
1889 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1890 | { | |
1891 | TAILCALL_FRAME, | |
1892 | record_btrace_frame_unwind_stop_reason, | |
1893 | record_btrace_frame_this_id, | |
1894 | record_btrace_frame_prev_register, | |
1895 | NULL, | |
1896 | record_btrace_tailcall_frame_sniffer, | |
1897 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1898 | }; |
b2f4cfde | 1899 | |
f6ac5f3d | 1900 | /* Implement the get_unwinder method. */ |
ac01945b | 1901 | |
f6ac5f3d PA |
1902 | const struct frame_unwind * |
1903 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1904 | { |
1905 | return &record_btrace_frame_unwind; | |
1906 | } | |
1907 | ||
f6ac5f3d | 1908 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1909 | |
f6ac5f3d PA |
1910 | const struct frame_unwind * |
1911 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1912 | { |
1913 | return &record_btrace_tailcall_frame_unwind; | |
1914 | } | |
1915 | ||
987e68b1 MM |
1916 | /* Return a human-readable string for FLAG. */ |
1917 | ||
1918 | static const char * | |
1919 | btrace_thread_flag_to_str (enum btrace_thread_flag flag) | |
1920 | { | |
1921 | switch (flag) | |
1922 | { | |
1923 | case BTHR_STEP: | |
1924 | return "step"; | |
1925 | ||
1926 | case BTHR_RSTEP: | |
1927 | return "reverse-step"; | |
1928 | ||
1929 | case BTHR_CONT: | |
1930 | return "cont"; | |
1931 | ||
1932 | case BTHR_RCONT: | |
1933 | return "reverse-cont"; | |
1934 | ||
1935 | case BTHR_STOP: | |
1936 | return "stop"; | |
1937 | } | |
1938 | ||
1939 | return "<invalid>"; | |
1940 | } | |
1941 | ||
52834460 MM |
1942 | /* Indicate that TP should be resumed according to FLAG. */ |
1943 | ||
1944 | static void | |
1945 | record_btrace_resume_thread (struct thread_info *tp, | |
1946 | enum btrace_thread_flag flag) | |
1947 | { | |
1948 | struct btrace_thread_info *btinfo; | |
1949 | ||
43792cf0 | 1950 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d TT |
1951 | target_pid_to_str (tp->ptid).c_str (), flag, |
1952 | btrace_thread_flag_to_str (flag)); | |
52834460 MM |
1953 | |
1954 | btinfo = &tp->btrace; | |
1955 | ||
52834460 | 1956 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1957 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1958 | |
0ca912df MM |
1959 | /* A resume request overwrites a preceding resume or stop request. */ |
1960 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1961 | btinfo->flags |= flag; |
1962 | } | |
1963 | ||
ec71cc2f MM |
1964 | /* Get the current frame for TP. */ |
1965 | ||
79b8d3b0 TT |
1966 | static struct frame_id |
1967 | get_thread_current_frame_id (struct thread_info *tp) | |
ec71cc2f | 1968 | { |
79b8d3b0 | 1969 | struct frame_id id; |
719546c4 | 1970 | bool executing; |
ec71cc2f | 1971 | |
00431a78 PA |
1972 | /* Set current thread, which is implicitly used by |
1973 | get_current_frame. */ | |
1974 | scoped_restore_current_thread restore_thread; | |
1975 | ||
1976 | switch_to_thread (tp); | |
ec71cc2f | 1977 | |
5b6d1e4f PA |
1978 | process_stratum_target *proc_target = tp->inf->process_target (); |
1979 | ||
ec71cc2f MM |
1980 | /* Clear the executing flag to allow changes to the current frame. |
1981 | We are not actually running, yet. We just started a reverse execution | |
1982 | command or a record goto command. | |
1983 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1984 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f | 1985 | move the thread. Since we need to recompute the stack, we temporarily |
85102364 | 1986 | set EXECUTING to false. */ |
00431a78 | 1987 | executing = tp->executing; |
5b6d1e4f | 1988 | set_executing (proc_target, inferior_ptid, false); |
ec71cc2f | 1989 | |
79b8d3b0 | 1990 | id = null_frame_id; |
a70b8144 | 1991 | try |
ec71cc2f | 1992 | { |
79b8d3b0 | 1993 | id = get_frame_id (get_current_frame ()); |
ec71cc2f | 1994 | } |
230d2906 | 1995 | catch (const gdb_exception &except) |
ec71cc2f MM |
1996 | { |
1997 | /* Restore the previous execution state. */ | |
5b6d1e4f | 1998 | set_executing (proc_target, inferior_ptid, executing); |
ec71cc2f | 1999 | |
eedc3f4f | 2000 | throw; |
ec71cc2f | 2001 | } |
ec71cc2f MM |
2002 | |
2003 | /* Restore the previous execution state. */ | |
5b6d1e4f | 2004 | set_executing (proc_target, inferior_ptid, executing); |
ec71cc2f | 2005 | |
79b8d3b0 | 2006 | return id; |
ec71cc2f MM |
2007 | } |
2008 | ||
52834460 MM |
2009 | /* Start replaying a thread. */ |
2010 | ||
2011 | static struct btrace_insn_iterator * | |
2012 | record_btrace_start_replaying (struct thread_info *tp) | |
2013 | { | |
52834460 MM |
2014 | struct btrace_insn_iterator *replay; |
2015 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2016 | |
2017 | btinfo = &tp->btrace; | |
2018 | replay = NULL; | |
2019 | ||
2020 | /* We can't start replaying without trace. */ | |
b54b03bd | 2021 | if (btinfo->functions.empty ()) |
52834460 MM |
2022 | return NULL; |
2023 | ||
52834460 MM |
2024 | /* GDB stores the current frame_id when stepping in order to detects steps |
2025 | into subroutines. | |
2026 | Since frames are computed differently when we're replaying, we need to | |
2027 | recompute those stored frames and fix them up so we can still detect | |
2028 | subroutines after we started replaying. */ | |
a70b8144 | 2029 | try |
52834460 | 2030 | { |
52834460 MM |
2031 | struct frame_id frame_id; |
2032 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2033 | ||
2034 | /* The current frame without replaying - computed via normal unwind. */ | |
79b8d3b0 | 2035 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2036 | |
2037 | /* Check if we need to update any stepping-related frame id's. */ | |
2038 | upd_step_frame_id = frame_id_eq (frame_id, | |
2039 | tp->control.step_frame_id); | |
2040 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2041 | tp->control.step_stack_frame_id); | |
2042 | ||
2043 | /* We start replaying at the end of the branch trace. This corresponds | |
2044 | to the current instruction. */ | |
8d749320 | 2045 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2046 | btrace_insn_end (replay, btinfo); |
2047 | ||
31fd9caa MM |
2048 | /* Skip gaps at the end of the trace. */ |
2049 | while (btrace_insn_get (replay) == NULL) | |
2050 | { | |
2051 | unsigned int steps; | |
2052 | ||
2053 | steps = btrace_insn_prev (replay, 1); | |
2054 | if (steps == 0) | |
2055 | error (_("No trace.")); | |
2056 | } | |
2057 | ||
52834460 MM |
2058 | /* We're not replaying, yet. */ |
2059 | gdb_assert (btinfo->replay == NULL); | |
2060 | btinfo->replay = replay; | |
2061 | ||
2062 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2063 | registers_changed_thread (tp); |
52834460 MM |
2064 | |
2065 | /* The current frame with replaying - computed via btrace unwind. */ | |
79b8d3b0 | 2066 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2067 | |
2068 | /* Replace stepping related frames where necessary. */ | |
2069 | if (upd_step_frame_id) | |
2070 | tp->control.step_frame_id = frame_id; | |
2071 | if (upd_step_stack_frame_id) | |
2072 | tp->control.step_stack_frame_id = frame_id; | |
2073 | } | |
230d2906 | 2074 | catch (const gdb_exception &except) |
52834460 MM |
2075 | { |
2076 | xfree (btinfo->replay); | |
2077 | btinfo->replay = NULL; | |
2078 | ||
00431a78 | 2079 | registers_changed_thread (tp); |
52834460 | 2080 | |
eedc3f4f | 2081 | throw; |
52834460 MM |
2082 | } |
2083 | ||
2084 | return replay; | |
2085 | } | |
2086 | ||
2087 | /* Stop replaying a thread. */ | |
2088 | ||
2089 | static void | |
2090 | record_btrace_stop_replaying (struct thread_info *tp) | |
2091 | { | |
2092 | struct btrace_thread_info *btinfo; | |
2093 | ||
2094 | btinfo = &tp->btrace; | |
2095 | ||
2096 | xfree (btinfo->replay); | |
2097 | btinfo->replay = NULL; | |
2098 | ||
2099 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2100 | registers_changed_thread (tp); |
52834460 MM |
2101 | } |
2102 | ||
e3cfc1c7 MM |
2103 | /* Stop replaying TP if it is at the end of its execution history. */ |
2104 | ||
2105 | static void | |
2106 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2107 | { | |
2108 | struct btrace_insn_iterator *replay, end; | |
2109 | struct btrace_thread_info *btinfo; | |
2110 | ||
2111 | btinfo = &tp->btrace; | |
2112 | replay = btinfo->replay; | |
2113 | ||
2114 | if (replay == NULL) | |
2115 | return; | |
2116 | ||
2117 | btrace_insn_end (&end, btinfo); | |
2118 | ||
2119 | if (btrace_insn_cmp (replay, &end) == 0) | |
2120 | record_btrace_stop_replaying (tp); | |
2121 | } | |
2122 | ||
f6ac5f3d | 2123 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2124 | |
f6ac5f3d PA |
2125 | void |
2126 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2127 | { |
d2939ba2 | 2128 | enum btrace_thread_flag flag, cflag; |
52834460 | 2129 | |
a068643d | 2130 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (), |
f6ac5f3d | 2131 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2132 | step ? "step" : "cont"); |
52834460 | 2133 | |
0ca912df MM |
2134 | /* Store the execution direction of the last resume. |
2135 | ||
f6ac5f3d | 2136 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2137 | to not change the execution direction in-between. */ |
f6ac5f3d | 2138 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2139 | |
0ca912df | 2140 | /* As long as we're not replaying, just forward the request. |
52834460 | 2141 | |
0ca912df MM |
2142 | For non-stop targets this means that no thread is replaying. In order to |
2143 | make progress, we may need to explicitly move replaying threads to the end | |
2144 | of their execution history. */ | |
f6ac5f3d PA |
2145 | if ((::execution_direction != EXEC_REVERSE) |
2146 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2147 | { |
b6a8c27b | 2148 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2149 | return; |
b2f4cfde MM |
2150 | } |
2151 | ||
52834460 | 2152 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2153 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2154 | { |
2155 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2156 | cflag = BTHR_RCONT; | |
2157 | } | |
52834460 | 2158 | else |
d2939ba2 MM |
2159 | { |
2160 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2161 | cflag = BTHR_CONT; | |
2162 | } | |
52834460 | 2163 | |
52834460 | 2164 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2165 | record_btrace_wait below. |
2166 | ||
2167 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
5b6d1e4f PA |
2168 | |
2169 | process_stratum_target *proc_target = current_inferior ()->process_target (); | |
2170 | ||
d2939ba2 MM |
2171 | if (!target_is_non_stop_p ()) |
2172 | { | |
26a57c92 | 2173 | gdb_assert (inferior_ptid.matches (ptid)); |
d2939ba2 | 2174 | |
5b6d1e4f | 2175 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) |
08036331 PA |
2176 | { |
2177 | if (tp->ptid.matches (inferior_ptid)) | |
2178 | record_btrace_resume_thread (tp, flag); | |
2179 | else | |
2180 | record_btrace_resume_thread (tp, cflag); | |
2181 | } | |
d2939ba2 MM |
2182 | } |
2183 | else | |
2184 | { | |
5b6d1e4f | 2185 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) |
08036331 | 2186 | record_btrace_resume_thread (tp, flag); |
d2939ba2 | 2187 | } |
70ad5bff MM |
2188 | |
2189 | /* Async support. */ | |
2190 | if (target_can_async_p ()) | |
2191 | { | |
6a3753b3 | 2192 | target_async (1); |
70ad5bff MM |
2193 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2194 | } | |
52834460 MM |
2195 | } |
2196 | ||
f6ac5f3d | 2197 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2198 | |
f6ac5f3d PA |
2199 | void |
2200 | record_btrace_target::commit_resume () | |
85ad3aaf | 2201 | { |
f6ac5f3d PA |
2202 | if ((::execution_direction != EXEC_REVERSE) |
2203 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2204 | beneath ()->commit_resume (); |
85ad3aaf PA |
2205 | } |
2206 | ||
987e68b1 MM |
2207 | /* Cancel resuming TP. */ |
2208 | ||
2209 | static void | |
2210 | record_btrace_cancel_resume (struct thread_info *tp) | |
2211 | { | |
2212 | enum btrace_thread_flag flags; | |
2213 | ||
2214 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2215 | if (flags == 0) | |
2216 | return; | |
2217 | ||
43792cf0 PA |
2218 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2219 | print_thread_id (tp), | |
a068643d | 2220 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 MM |
2221 | btrace_thread_flag_to_str (flags)); |
2222 | ||
2223 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2224 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2225 | } |
2226 | ||
2227 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2228 | ||
2229 | static struct target_waitstatus | |
2230 | btrace_step_no_history (void) | |
2231 | { | |
2232 | struct target_waitstatus status; | |
2233 | ||
2234 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2235 | ||
2236 | return status; | |
2237 | } | |
2238 | ||
2239 | /* Return a target_waitstatus indicating that a step finished. */ | |
2240 | ||
2241 | static struct target_waitstatus | |
2242 | btrace_step_stopped (void) | |
2243 | { | |
2244 | struct target_waitstatus status; | |
2245 | ||
2246 | status.kind = TARGET_WAITKIND_STOPPED; | |
2247 | status.value.sig = GDB_SIGNAL_TRAP; | |
2248 | ||
2249 | return status; | |
2250 | } | |
2251 | ||
6e4879f0 MM |
2252 | /* Return a target_waitstatus indicating that a thread was stopped as |
2253 | requested. */ | |
2254 | ||
2255 | static struct target_waitstatus | |
2256 | btrace_step_stopped_on_request (void) | |
2257 | { | |
2258 | struct target_waitstatus status; | |
2259 | ||
2260 | status.kind = TARGET_WAITKIND_STOPPED; | |
2261 | status.value.sig = GDB_SIGNAL_0; | |
2262 | ||
2263 | return status; | |
2264 | } | |
2265 | ||
d825d248 MM |
2266 | /* Return a target_waitstatus indicating a spurious stop. */ |
2267 | ||
2268 | static struct target_waitstatus | |
2269 | btrace_step_spurious (void) | |
2270 | { | |
2271 | struct target_waitstatus status; | |
2272 | ||
2273 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2274 | ||
2275 | return status; | |
2276 | } | |
2277 | ||
e3cfc1c7 MM |
2278 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2279 | ||
2280 | static struct target_waitstatus | |
2281 | btrace_step_no_resumed (void) | |
2282 | { | |
2283 | struct target_waitstatus status; | |
2284 | ||
2285 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2286 | ||
2287 | return status; | |
2288 | } | |
2289 | ||
2290 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2291 | ||
2292 | static struct target_waitstatus | |
2293 | btrace_step_again (void) | |
2294 | { | |
2295 | struct target_waitstatus status; | |
2296 | ||
2297 | status.kind = TARGET_WAITKIND_IGNORE; | |
2298 | ||
2299 | return status; | |
2300 | } | |
2301 | ||
52834460 MM |
2302 | /* Clear the record histories. */ |
2303 | ||
2304 | static void | |
2305 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2306 | { | |
2307 | xfree (btinfo->insn_history); | |
2308 | xfree (btinfo->call_history); | |
2309 | ||
2310 | btinfo->insn_history = NULL; | |
2311 | btinfo->call_history = NULL; | |
2312 | } | |
2313 | ||
3c615f99 MM |
2314 | /* Check whether TP's current replay position is at a breakpoint. */ |
2315 | ||
2316 | static int | |
2317 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2318 | { | |
2319 | struct btrace_insn_iterator *replay; | |
2320 | struct btrace_thread_info *btinfo; | |
2321 | const struct btrace_insn *insn; | |
3c615f99 MM |
2322 | |
2323 | btinfo = &tp->btrace; | |
2324 | replay = btinfo->replay; | |
2325 | ||
2326 | if (replay == NULL) | |
2327 | return 0; | |
2328 | ||
2329 | insn = btrace_insn_get (replay); | |
2330 | if (insn == NULL) | |
2331 | return 0; | |
2332 | ||
00431a78 | 2333 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2334 | &btinfo->stop_reason); |
2335 | } | |
2336 | ||
d825d248 | 2337 | /* Step one instruction in forward direction. */ |
52834460 MM |
2338 | |
2339 | static struct target_waitstatus | |
d825d248 | 2340 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2341 | { |
b61ce85c | 2342 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2343 | struct btrace_thread_info *btinfo; |
52834460 | 2344 | |
d825d248 MM |
2345 | btinfo = &tp->btrace; |
2346 | replay = btinfo->replay; | |
2347 | ||
2348 | /* We're done if we're not replaying. */ | |
2349 | if (replay == NULL) | |
2350 | return btrace_step_no_history (); | |
2351 | ||
011c71b6 MM |
2352 | /* Check if we're stepping a breakpoint. */ |
2353 | if (record_btrace_replay_at_breakpoint (tp)) | |
2354 | return btrace_step_stopped (); | |
2355 | ||
b61ce85c MM |
2356 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2357 | jump back to the instruction at which we started. */ | |
2358 | start = *replay; | |
d825d248 MM |
2359 | do |
2360 | { | |
2361 | unsigned int steps; | |
2362 | ||
e3cfc1c7 MM |
2363 | /* We will bail out here if we continue stepping after reaching the end |
2364 | of the execution history. */ | |
d825d248 MM |
2365 | steps = btrace_insn_next (replay, 1); |
2366 | if (steps == 0) | |
b61ce85c MM |
2367 | { |
2368 | *replay = start; | |
2369 | return btrace_step_no_history (); | |
2370 | } | |
d825d248 MM |
2371 | } |
2372 | while (btrace_insn_get (replay) == NULL); | |
2373 | ||
2374 | /* Determine the end of the instruction trace. */ | |
2375 | btrace_insn_end (&end, btinfo); | |
2376 | ||
e3cfc1c7 MM |
2377 | /* The execution trace contains (and ends with) the current instruction. |
2378 | This instruction has not been executed, yet, so the trace really ends | |
2379 | one instruction earlier. */ | |
d825d248 | 2380 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2381 | return btrace_step_no_history (); |
d825d248 MM |
2382 | |
2383 | return btrace_step_spurious (); | |
2384 | } | |
2385 | ||
2386 | /* Step one instruction in backward direction. */ | |
2387 | ||
2388 | static struct target_waitstatus | |
2389 | record_btrace_single_step_backward (struct thread_info *tp) | |
2390 | { | |
b61ce85c | 2391 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2392 | struct btrace_thread_info *btinfo; |
e59fa00f | 2393 | |
52834460 MM |
2394 | btinfo = &tp->btrace; |
2395 | replay = btinfo->replay; | |
2396 | ||
d825d248 MM |
2397 | /* Start replaying if we're not already doing so. */ |
2398 | if (replay == NULL) | |
2399 | replay = record_btrace_start_replaying (tp); | |
2400 | ||
2401 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2402 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2403 | the trace), jump back to the instruction at which we started. */ | |
2404 | start = *replay; | |
d825d248 MM |
2405 | do |
2406 | { | |
2407 | unsigned int steps; | |
2408 | ||
2409 | steps = btrace_insn_prev (replay, 1); | |
2410 | if (steps == 0) | |
b61ce85c MM |
2411 | { |
2412 | *replay = start; | |
2413 | return btrace_step_no_history (); | |
2414 | } | |
d825d248 MM |
2415 | } |
2416 | while (btrace_insn_get (replay) == NULL); | |
2417 | ||
011c71b6 MM |
2418 | /* Check if we're stepping a breakpoint. |
2419 | ||
2420 | For reverse-stepping, this check is after the step. There is logic in | |
2421 | infrun.c that handles reverse-stepping separately. See, for example, | |
2422 | proceed and adjust_pc_after_break. | |
2423 | ||
2424 | This code assumes that for reverse-stepping, PC points to the last | |
2425 | de-executed instruction, whereas for forward-stepping PC points to the | |
2426 | next to-be-executed instruction. */ | |
2427 | if (record_btrace_replay_at_breakpoint (tp)) | |
2428 | return btrace_step_stopped (); | |
2429 | ||
d825d248 MM |
2430 | return btrace_step_spurious (); |
2431 | } | |
2432 | ||
2433 | /* Step a single thread. */ | |
2434 | ||
2435 | static struct target_waitstatus | |
2436 | record_btrace_step_thread (struct thread_info *tp) | |
2437 | { | |
2438 | struct btrace_thread_info *btinfo; | |
2439 | struct target_waitstatus status; | |
2440 | enum btrace_thread_flag flags; | |
2441 | ||
2442 | btinfo = &tp->btrace; | |
2443 | ||
6e4879f0 MM |
2444 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2445 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2446 | |
43792cf0 | 2447 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d | 2448 | target_pid_to_str (tp->ptid).c_str (), flags, |
987e68b1 | 2449 | btrace_thread_flag_to_str (flags)); |
52834460 | 2450 | |
6e4879f0 MM |
2451 | /* We can't step without an execution history. */ |
2452 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2453 | return btrace_step_no_history (); | |
2454 | ||
52834460 MM |
2455 | switch (flags) |
2456 | { | |
2457 | default: | |
2458 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2459 | ||
6e4879f0 MM |
2460 | case BTHR_STOP: |
2461 | return btrace_step_stopped_on_request (); | |
2462 | ||
52834460 | 2463 | case BTHR_STEP: |
d825d248 MM |
2464 | status = record_btrace_single_step_forward (tp); |
2465 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2466 | break; |
52834460 MM |
2467 | |
2468 | return btrace_step_stopped (); | |
2469 | ||
2470 | case BTHR_RSTEP: | |
d825d248 MM |
2471 | status = record_btrace_single_step_backward (tp); |
2472 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2473 | break; |
52834460 MM |
2474 | |
2475 | return btrace_step_stopped (); | |
2476 | ||
2477 | case BTHR_CONT: | |
e3cfc1c7 MM |
2478 | status = record_btrace_single_step_forward (tp); |
2479 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2480 | break; | |
52834460 | 2481 | |
e3cfc1c7 MM |
2482 | btinfo->flags |= flags; |
2483 | return btrace_step_again (); | |
52834460 MM |
2484 | |
2485 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2486 | status = record_btrace_single_step_backward (tp); |
2487 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2488 | break; | |
52834460 | 2489 | |
e3cfc1c7 MM |
2490 | btinfo->flags |= flags; |
2491 | return btrace_step_again (); | |
2492 | } | |
d825d248 | 2493 | |
f6ac5f3d | 2494 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2495 | method will stop the thread for whom the event is reported. */ |
2496 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2497 | btinfo->flags |= flags; | |
52834460 | 2498 | |
e3cfc1c7 | 2499 | return status; |
b2f4cfde MM |
2500 | } |
2501 | ||
a6b5be76 MM |
2502 | /* Announce further events if necessary. */ |
2503 | ||
2504 | static void | |
53127008 SM |
2505 | record_btrace_maybe_mark_async_event |
2506 | (const std::vector<thread_info *> &moving, | |
2507 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2508 | { |
53127008 SM |
2509 | bool more_moving = !moving.empty (); |
2510 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2511 | |
2512 | if (!more_moving && !more_no_history) | |
2513 | return; | |
2514 | ||
2515 | if (more_moving) | |
2516 | DEBUG ("movers pending"); | |
2517 | ||
2518 | if (more_no_history) | |
2519 | DEBUG ("no-history pending"); | |
2520 | ||
2521 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2522 | } | |
2523 | ||
f6ac5f3d | 2524 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2525 | |
f6ac5f3d PA |
2526 | ptid_t |
2527 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
2528 | int options) | |
b2f4cfde | 2529 | { |
53127008 SM |
2530 | std::vector<thread_info *> moving; |
2531 | std::vector<thread_info *> no_history; | |
52834460 | 2532 | |
a068643d | 2533 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid).c_str (), options); |
52834460 | 2534 | |
b2f4cfde | 2535 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2536 | if ((::execution_direction != EXEC_REVERSE) |
2537 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2538 | { |
b6a8c27b | 2539 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2540 | } |
2541 | ||
e3cfc1c7 | 2542 | /* Keep a work list of moving threads. */ |
5b6d1e4f PA |
2543 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2544 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 PA |
2545 | if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) |
2546 | moving.push_back (tp); | |
e3cfc1c7 | 2547 | |
53127008 | 2548 | if (moving.empty ()) |
52834460 | 2549 | { |
e3cfc1c7 | 2550 | *status = btrace_step_no_resumed (); |
52834460 | 2551 | |
a068643d | 2552 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (), |
23fdd69e | 2553 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2554 | |
e3cfc1c7 | 2555 | return null_ptid; |
52834460 MM |
2556 | } |
2557 | ||
e3cfc1c7 MM |
2558 | /* Step moving threads one by one, one step each, until either one thread |
2559 | reports an event or we run out of threads to step. | |
2560 | ||
2561 | When stepping more than one thread, chances are that some threads reach | |
2562 | the end of their execution history earlier than others. If we reported | |
2563 | this immediately, all-stop on top of non-stop would stop all threads and | |
2564 | resume the same threads next time. And we would report the same thread | |
2565 | having reached the end of its execution history again. | |
2566 | ||
2567 | In the worst case, this would starve the other threads. But even if other | |
2568 | threads would be allowed to make progress, this would result in far too | |
2569 | many intermediate stops. | |
2570 | ||
2571 | We therefore delay the reporting of "no execution history" until we have | |
2572 | nothing else to report. By this time, all threads should have moved to | |
2573 | either the beginning or the end of their execution history. There will | |
2574 | be a single user-visible stop. */ | |
53127008 SM |
2575 | struct thread_info *eventing = NULL; |
2576 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2577 | { |
53127008 | 2578 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2579 | { |
53127008 SM |
2580 | thread_info *tp = moving[ix]; |
2581 | ||
e3cfc1c7 MM |
2582 | *status = record_btrace_step_thread (tp); |
2583 | ||
2584 | switch (status->kind) | |
2585 | { | |
2586 | case TARGET_WAITKIND_IGNORE: | |
2587 | ix++; | |
2588 | break; | |
2589 | ||
2590 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2591 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2592 | break; |
2593 | ||
2594 | default: | |
53127008 | 2595 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2596 | break; |
2597 | } | |
2598 | } | |
2599 | } | |
2600 | ||
2601 | if (eventing == NULL) | |
2602 | { | |
2603 | /* We started with at least one moving thread. This thread must have | |
2604 | either stopped or reached the end of its execution history. | |
2605 | ||
2606 | In the former case, EVENTING must not be NULL. | |
2607 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2608 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2609 | |
2610 | /* We kept threads moving at the end of their execution history. Stop | |
2611 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2612 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2613 | eventing->btrace.flags &= ~BTHR_MOVE; |
2614 | ||
2615 | *status = btrace_step_no_history (); | |
2616 | } | |
2617 | ||
2618 | gdb_assert (eventing != NULL); | |
2619 | ||
2620 | /* We kept threads replaying at the end of their execution history. Stop | |
2621 | replaying EVENTING now that we are going to report its stop. */ | |
2622 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2623 | |
2624 | /* Stop all other threads. */ | |
5953356c | 2625 | if (!target_is_non_stop_p ()) |
53127008 | 2626 | { |
08036331 | 2627 | for (thread_info *tp : all_non_exited_threads ()) |
53127008 SM |
2628 | record_btrace_cancel_resume (tp); |
2629 | } | |
52834460 | 2630 | |
a6b5be76 MM |
2631 | /* In async mode, we need to announce further events. */ |
2632 | if (target_is_async_p ()) | |
2633 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2634 | ||
52834460 | 2635 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2636 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2637 | |
2638 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2639 | registers_changed_thread (eventing); |
e3cfc1c7 | 2640 | |
43792cf0 PA |
2641 | DEBUG ("wait ended by thread %s (%s): %s", |
2642 | print_thread_id (eventing), | |
a068643d | 2643 | target_pid_to_str (eventing->ptid).c_str (), |
23fdd69e | 2644 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2645 | |
e3cfc1c7 | 2646 | return eventing->ptid; |
52834460 MM |
2647 | } |
2648 | ||
f6ac5f3d | 2649 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2650 | |
f6ac5f3d PA |
2651 | void |
2652 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 | 2653 | { |
a068643d | 2654 | DEBUG ("stop %s", target_pid_to_str (ptid).c_str ()); |
6e4879f0 MM |
2655 | |
2656 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2657 | if ((::execution_direction != EXEC_REVERSE) |
2658 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2659 | { |
b6a8c27b | 2660 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2661 | } |
2662 | else | |
2663 | { | |
5b6d1e4f PA |
2664 | process_stratum_target *proc_target |
2665 | = current_inferior ()->process_target (); | |
2666 | ||
2667 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 PA |
2668 | { |
2669 | tp->btrace.flags &= ~BTHR_MOVE; | |
2670 | tp->btrace.flags |= BTHR_STOP; | |
2671 | } | |
6e4879f0 MM |
2672 | } |
2673 | } | |
2674 | ||
f6ac5f3d | 2675 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2676 | |
57810aa7 | 2677 | bool |
f6ac5f3d | 2678 | record_btrace_target::can_execute_reverse () |
52834460 | 2679 | { |
57810aa7 | 2680 | return true; |
52834460 MM |
2681 | } |
2682 | ||
f6ac5f3d | 2683 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2684 | |
57810aa7 | 2685 | bool |
f6ac5f3d | 2686 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2687 | { |
f6ac5f3d | 2688 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2689 | { |
2690 | struct thread_info *tp = inferior_thread (); | |
2691 | ||
2692 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2693 | } | |
2694 | ||
b6a8c27b | 2695 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2696 | } |
2697 | ||
f6ac5f3d | 2698 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2699 | record-btrace. */ |
2700 | ||
57810aa7 | 2701 | bool |
f6ac5f3d | 2702 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2703 | { |
f6ac5f3d | 2704 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2705 | return true; |
9e8915c6 | 2706 | |
b6a8c27b | 2707 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2708 | } |
2709 | ||
f6ac5f3d | 2710 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2711 | |
57810aa7 | 2712 | bool |
f6ac5f3d | 2713 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2714 | { |
f6ac5f3d | 2715 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2716 | { |
2717 | struct thread_info *tp = inferior_thread (); | |
2718 | ||
2719 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2720 | } | |
2721 | ||
b6a8c27b | 2722 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2723 | } |
2724 | ||
f6ac5f3d | 2725 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2726 | record-btrace. */ |
2727 | ||
57810aa7 | 2728 | bool |
f6ac5f3d | 2729 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2730 | { |
f6ac5f3d | 2731 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2732 | return true; |
52834460 | 2733 | |
b6a8c27b | 2734 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2735 | } |
2736 | ||
f6ac5f3d | 2737 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2738 | |
f6ac5f3d PA |
2739 | void |
2740 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2741 | { |
e8032dde | 2742 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2743 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2744 | return; |
2745 | ||
2746 | /* Forward the request. */ | |
b6a8c27b | 2747 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2748 | } |
2749 | ||
f6ac5f3d | 2750 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2751 | |
57810aa7 | 2752 | bool |
f6ac5f3d | 2753 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2754 | { |
2755 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2756 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2757 | return true; |
e2887aa3 MM |
2758 | |
2759 | /* Forward the request. */ | |
b6a8c27b | 2760 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2761 | } |
2762 | ||
066ce621 MM |
2763 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2764 | is stopped. */ | |
2765 | ||
2766 | static void | |
2767 | record_btrace_set_replay (struct thread_info *tp, | |
2768 | const struct btrace_insn_iterator *it) | |
2769 | { | |
2770 | struct btrace_thread_info *btinfo; | |
2771 | ||
2772 | btinfo = &tp->btrace; | |
2773 | ||
a0f1b963 | 2774 | if (it == NULL) |
52834460 | 2775 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2776 | else |
2777 | { | |
2778 | if (btinfo->replay == NULL) | |
52834460 | 2779 | record_btrace_start_replaying (tp); |
066ce621 MM |
2780 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2781 | return; | |
2782 | ||
2783 | *btinfo->replay = *it; | |
00431a78 | 2784 | registers_changed_thread (tp); |
066ce621 MM |
2785 | } |
2786 | ||
52834460 MM |
2787 | /* Start anew from the new replay position. */ |
2788 | record_btrace_clear_histories (btinfo); | |
485668e5 | 2789 | |
f2ffa92b PA |
2790 | inferior_thread ()->suspend.stop_pc |
2791 | = regcache_read_pc (get_current_regcache ()); | |
485668e5 | 2792 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
066ce621 MM |
2793 | } |
2794 | ||
f6ac5f3d | 2795 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2796 | |
f6ac5f3d PA |
2797 | void |
2798 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2799 | { |
2800 | struct thread_info *tp; | |
2801 | struct btrace_insn_iterator begin; | |
2802 | ||
2803 | tp = require_btrace_thread (); | |
2804 | ||
2805 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2806 | |
2807 | /* Skip gaps at the beginning of the trace. */ | |
2808 | while (btrace_insn_get (&begin) == NULL) | |
2809 | { | |
2810 | unsigned int steps; | |
2811 | ||
2812 | steps = btrace_insn_next (&begin, 1); | |
2813 | if (steps == 0) | |
2814 | error (_("No trace.")); | |
2815 | } | |
2816 | ||
066ce621 | 2817 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2818 | } |
2819 | ||
f6ac5f3d | 2820 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2821 | |
f6ac5f3d PA |
2822 | void |
2823 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2824 | { |
2825 | struct thread_info *tp; | |
2826 | ||
2827 | tp = require_btrace_thread (); | |
2828 | ||
2829 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2830 | } |
2831 | ||
f6ac5f3d | 2832 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2833 | |
f6ac5f3d PA |
2834 | void |
2835 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2836 | { |
2837 | struct thread_info *tp; | |
2838 | struct btrace_insn_iterator it; | |
2839 | unsigned int number; | |
2840 | int found; | |
2841 | ||
2842 | number = insn; | |
2843 | ||
2844 | /* Check for wrap-arounds. */ | |
2845 | if (number != insn) | |
2846 | error (_("Instruction number out of range.")); | |
2847 | ||
2848 | tp = require_btrace_thread (); | |
2849 | ||
2850 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2851 | |
2852 | /* Check if the instruction could not be found or is a gap. */ | |
2853 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2854 | error (_("No such instruction.")); |
2855 | ||
2856 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2857 | } |
2858 | ||
f6ac5f3d | 2859 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2860 | |
f6ac5f3d PA |
2861 | void |
2862 | record_btrace_target::record_stop_replaying () | |
797094dd | 2863 | { |
08036331 | 2864 | for (thread_info *tp : all_non_exited_threads ()) |
797094dd MM |
2865 | record_btrace_stop_replaying (tp); |
2866 | } | |
2867 | ||
f6ac5f3d | 2868 | /* The execution_direction target method. */ |
70ad5bff | 2869 | |
f6ac5f3d PA |
2870 | enum exec_direction_kind |
2871 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2872 | { |
2873 | return record_btrace_resume_exec_dir; | |
2874 | } | |
2875 | ||
f6ac5f3d | 2876 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2877 | |
f6ac5f3d PA |
2878 | void |
2879 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2880 | { |
2881 | record_btrace_generating_corefile = 1; | |
2882 | } | |
2883 | ||
f6ac5f3d | 2884 | /* The done_generating_core target method. */ |
aef92902 | 2885 | |
f6ac5f3d PA |
2886 | void |
2887 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2888 | { |
2889 | record_btrace_generating_corefile = 0; | |
2890 | } | |
2891 | ||
f4abbc16 MM |
2892 | /* Start recording in BTS format. */ |
2893 | ||
2894 | static void | |
cdb34d4a | 2895 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2896 | { |
f4abbc16 MM |
2897 | if (args != NULL && *args != 0) |
2898 | error (_("Invalid argument.")); | |
2899 | ||
2900 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2901 | ||
a70b8144 | 2902 | try |
492d29ea | 2903 | { |
95a6b0a1 | 2904 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2905 | } |
230d2906 | 2906 | catch (const gdb_exception &exception) |
f4abbc16 MM |
2907 | { |
2908 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2909 | throw; |
f4abbc16 MM |
2910 | } |
2911 | } | |
2912 | ||
bc504a31 | 2913 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2914 | |
2915 | static void | |
cdb34d4a | 2916 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2917 | { |
2918 | if (args != NULL && *args != 0) | |
2919 | error (_("Invalid argument.")); | |
2920 | ||
b20a6524 | 2921 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2922 | |
a70b8144 | 2923 | try |
492d29ea | 2924 | { |
95a6b0a1 | 2925 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2926 | } |
230d2906 | 2927 | catch (const gdb_exception &exception) |
492d29ea PA |
2928 | { |
2929 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2930 | throw; |
492d29ea | 2931 | } |
afedecd3 MM |
2932 | } |
2933 | ||
b20a6524 MM |
2934 | /* Alias for "target record". */ |
2935 | ||
2936 | static void | |
981a3fb3 | 2937 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2938 | { |
2939 | if (args != NULL && *args != 0) | |
2940 | error (_("Invalid argument.")); | |
2941 | ||
2942 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2943 | ||
a70b8144 | 2944 | try |
b20a6524 | 2945 | { |
95a6b0a1 | 2946 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2947 | } |
230d2906 | 2948 | catch (const gdb_exception &exception) |
b20a6524 MM |
2949 | { |
2950 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2951 | ||
a70b8144 | 2952 | try |
b20a6524 | 2953 | { |
95a6b0a1 | 2954 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2955 | } |
230d2906 | 2956 | catch (const gdb_exception &ex) |
b20a6524 MM |
2957 | { |
2958 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2959 | throw; |
b20a6524 | 2960 | } |
b20a6524 | 2961 | } |
b20a6524 MM |
2962 | } |
2963 | ||
67b5c0c1 MM |
2964 | /* The "set record btrace" command. */ |
2965 | ||
2966 | static void | |
981a3fb3 | 2967 | cmd_set_record_btrace (const char *args, int from_tty) |
67b5c0c1 | 2968 | { |
b85310e1 MM |
2969 | printf_unfiltered (_("\"set record btrace\" must be followed " |
2970 | "by an appropriate subcommand.\n")); | |
2971 | help_list (set_record_btrace_cmdlist, "set record btrace ", | |
2972 | all_commands, gdb_stdout); | |
67b5c0c1 MM |
2973 | } |
2974 | ||
2975 | /* The "show record btrace" command. */ | |
2976 | ||
2977 | static void | |
981a3fb3 | 2978 | cmd_show_record_btrace (const char *args, int from_tty) |
67b5c0c1 MM |
2979 | { |
2980 | cmd_show_list (show_record_btrace_cmdlist, from_tty, ""); | |
2981 | } | |
2982 | ||
2983 | /* The "show record btrace replay-memory-access" command. */ | |
2984 | ||
2985 | static void | |
2986 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2987 | struct cmd_list_element *c, const char *value) | |
2988 | { | |
2989 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2990 | replay_memory_access); | |
2991 | } | |
2992 | ||
4a4495d6 MM |
2993 | /* The "set record btrace cpu none" command. */ |
2994 | ||
2995 | static void | |
2996 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
2997 | { | |
2998 | if (args != nullptr && *args != 0) | |
2999 | error (_("Trailing junk: '%s'."), args); | |
3000 | ||
3001 | record_btrace_cpu_state = CS_NONE; | |
3002 | } | |
3003 | ||
3004 | /* The "set record btrace cpu auto" command. */ | |
3005 | ||
3006 | static void | |
3007 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3008 | { | |
3009 | if (args != nullptr && *args != 0) | |
3010 | error (_("Trailing junk: '%s'."), args); | |
3011 | ||
3012 | record_btrace_cpu_state = CS_AUTO; | |
3013 | } | |
3014 | ||
3015 | /* The "set record btrace cpu" command. */ | |
3016 | ||
3017 | static void | |
3018 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3019 | { | |
3020 | if (args == nullptr) | |
3021 | args = ""; | |
3022 | ||
3023 | /* We use a hard-coded vendor string for now. */ | |
3024 | unsigned int family, model, stepping; | |
3025 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3026 | &model, &l1, &stepping, &l2); | |
3027 | if (matches == 3) | |
3028 | { | |
3029 | if (strlen (args) != l2) | |
3030 | error (_("Trailing junk: '%s'."), args + l2); | |
3031 | } | |
3032 | else if (matches == 2) | |
3033 | { | |
3034 | if (strlen (args) != l1) | |
3035 | error (_("Trailing junk: '%s'."), args + l1); | |
3036 | ||
3037 | stepping = 0; | |
3038 | } | |
3039 | else | |
3040 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3041 | ||
3042 | if (USHRT_MAX < family) | |
3043 | error (_("Cpu family too big.")); | |
3044 | ||
3045 | if (UCHAR_MAX < model) | |
3046 | error (_("Cpu model too big.")); | |
3047 | ||
3048 | if (UCHAR_MAX < stepping) | |
3049 | error (_("Cpu stepping too big.")); | |
3050 | ||
3051 | record_btrace_cpu.vendor = CV_INTEL; | |
3052 | record_btrace_cpu.family = family; | |
3053 | record_btrace_cpu.model = model; | |
3054 | record_btrace_cpu.stepping = stepping; | |
3055 | ||
3056 | record_btrace_cpu_state = CS_CPU; | |
3057 | } | |
3058 | ||
3059 | /* The "show record btrace cpu" command. */ | |
3060 | ||
3061 | static void | |
3062 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3063 | { | |
4a4495d6 MM |
3064 | if (args != nullptr && *args != 0) |
3065 | error (_("Trailing junk: '%s'."), args); | |
3066 | ||
3067 | switch (record_btrace_cpu_state) | |
3068 | { | |
3069 | case CS_AUTO: | |
3070 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3071 | return; | |
3072 | ||
3073 | case CS_NONE: | |
3074 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3075 | return; | |
3076 | ||
3077 | case CS_CPU: | |
3078 | switch (record_btrace_cpu.vendor) | |
3079 | { | |
3080 | case CV_INTEL: | |
3081 | if (record_btrace_cpu.stepping == 0) | |
3082 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3083 | record_btrace_cpu.family, | |
3084 | record_btrace_cpu.model); | |
3085 | else | |
3086 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3087 | record_btrace_cpu.family, | |
3088 | record_btrace_cpu.model, | |
3089 | record_btrace_cpu.stepping); | |
3090 | return; | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | error (_("Internal error: bad cpu state.")); | |
3095 | } | |
3096 | ||
3097 | /* The "s record btrace bts" command. */ | |
d33501a5 MM |
3098 | |
3099 | static void | |
981a3fb3 | 3100 | cmd_set_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3101 | { |
3102 | printf_unfiltered (_("\"set record btrace bts\" must be followed " | |
b20a6524 | 3103 | "by an appropriate subcommand.\n")); |
d33501a5 MM |
3104 | help_list (set_record_btrace_bts_cmdlist, "set record btrace bts ", |
3105 | all_commands, gdb_stdout); | |
3106 | } | |
3107 | ||
3108 | /* The "show record btrace bts" command. */ | |
3109 | ||
3110 | static void | |
981a3fb3 | 3111 | cmd_show_record_btrace_bts (const char *args, int from_tty) |
d33501a5 MM |
3112 | { |
3113 | cmd_show_list (show_record_btrace_bts_cmdlist, from_tty, ""); | |
3114 | } | |
3115 | ||
b20a6524 MM |
3116 | /* The "set record btrace pt" command. */ |
3117 | ||
3118 | static void | |
981a3fb3 | 3119 | cmd_set_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3120 | { |
3121 | printf_unfiltered (_("\"set record btrace pt\" must be followed " | |
3122 | "by an appropriate subcommand.\n")); | |
3123 | help_list (set_record_btrace_pt_cmdlist, "set record btrace pt ", | |
3124 | all_commands, gdb_stdout); | |
3125 | } | |
3126 | ||
3127 | /* The "show record btrace pt" command. */ | |
3128 | ||
3129 | static void | |
981a3fb3 | 3130 | cmd_show_record_btrace_pt (const char *args, int from_tty) |
b20a6524 MM |
3131 | { |
3132 | cmd_show_list (show_record_btrace_pt_cmdlist, from_tty, ""); | |
3133 | } | |
3134 | ||
3135 | /* The "record bts buffer-size" show value function. */ | |
3136 | ||
3137 | static void | |
3138 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3139 | struct cmd_list_element *c, | |
3140 | const char *value) | |
3141 | { | |
3142 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3143 | value); | |
3144 | } | |
3145 | ||
3146 | /* The "record pt buffer-size" show value function. */ | |
3147 | ||
3148 | static void | |
3149 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3150 | struct cmd_list_element *c, | |
3151 | const char *value) | |
3152 | { | |
3153 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3154 | value); | |
3155 | } | |
3156 | ||
afedecd3 MM |
3157 | /* Initialize btrace commands. */ |
3158 | ||
6c265988 | 3159 | void _initialize_record_btrace (); |
afedecd3 | 3160 | void |
6c265988 | 3161 | _initialize_record_btrace () |
afedecd3 | 3162 | { |
f4abbc16 MM |
3163 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3164 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3165 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3166 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3167 | ||
f4abbc16 MM |
3168 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3169 | _("\ | |
3170 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3171 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3172 | This format may not be available on all processors."), | |
3173 | &record_btrace_cmdlist); | |
3174 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3175 | ||
b20a6524 MM |
3176 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3177 | _("\ | |
bc504a31 | 3178 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3179 | This format may not be available on all processors."), |
3180 | &record_btrace_cmdlist); | |
3181 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3182 | ||
67b5c0c1 | 3183 | add_prefix_cmd ("btrace", class_support, cmd_set_record_btrace, |
590042fc | 3184 | _("Set record options."), &set_record_btrace_cmdlist, |
67b5c0c1 MM |
3185 | "set record btrace ", 0, &set_record_cmdlist); |
3186 | ||
3187 | add_prefix_cmd ("btrace", class_support, cmd_show_record_btrace, | |
590042fc | 3188 | _("Show record options."), &show_record_btrace_cmdlist, |
67b5c0c1 MM |
3189 | "show record btrace ", 0, &show_record_cmdlist); |
3190 | ||
3191 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3192 | replay_memory_access_types, &replay_memory_access, _("\ | |
3193 | Set what memory accesses are allowed during replay."), _("\ | |
3194 | Show what memory accesses are allowed during replay."), | |
3195 | _("Default is READ-ONLY.\n\n\ | |
3196 | The btrace record target does not trace data.\n\ | |
3197 | The memory therefore corresponds to the live target and not \ | |
3198 | to the current replay position.\n\n\ | |
3199 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3200 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3201 | replay."), | |
3202 | NULL, cmd_show_replay_memory_access, | |
3203 | &set_record_btrace_cmdlist, | |
3204 | &show_record_btrace_cmdlist); | |
3205 | ||
4a4495d6 MM |
3206 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3207 | _("\ | |
3208 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3209 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3210 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3211 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3212 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3213 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3214 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3215 | When set to \"none\", errata workarounds are disabled."), | |
3216 | &set_record_btrace_cpu_cmdlist, | |
590042fc | 3217 | "set record btrace cpu ", 1, |
4a4495d6 MM |
3218 | &set_record_btrace_cmdlist); |
3219 | ||
3220 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3221 | Automatically determine the cpu to be used for trace decode."), | |
3222 | &set_record_btrace_cpu_cmdlist); | |
3223 | ||
3224 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3225 | Do not enable errata workarounds for trace decode."), | |
3226 | &set_record_btrace_cpu_cmdlist); | |
3227 | ||
3228 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3229 | Show the cpu to be used for trace decode."), | |
3230 | &show_record_btrace_cmdlist); | |
3231 | ||
d33501a5 | 3232 | add_prefix_cmd ("bts", class_support, cmd_set_record_btrace_bts, |
590042fc | 3233 | _("Set record btrace bts options."), |
d33501a5 MM |
3234 | &set_record_btrace_bts_cmdlist, |
3235 | "set record btrace bts ", 0, &set_record_btrace_cmdlist); | |
3236 | ||
3237 | add_prefix_cmd ("bts", class_support, cmd_show_record_btrace_bts, | |
590042fc | 3238 | _("Show record btrace bts options."), |
d33501a5 MM |
3239 | &show_record_btrace_bts_cmdlist, |
3240 | "show record btrace bts ", 0, &show_record_btrace_cmdlist); | |
3241 | ||
3242 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3243 | &record_btrace_conf.bts.size, | |
3244 | _("Set the record/replay bts buffer size."), | |
3245 | _("Show the record/replay bts buffer size."), _("\ | |
3246 | When starting recording request a trace buffer of this size. \ | |
3247 | The actual buffer size may differ from the requested size. \ | |
3248 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3249 | Bigger buffers allow longer recording but also take more time to process \ | |
3250 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3251 | The trace buffer size may not be changed while recording."), NULL, |
3252 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3253 | &set_record_btrace_bts_cmdlist, |
3254 | &show_record_btrace_bts_cmdlist); | |
3255 | ||
b20a6524 | 3256 | add_prefix_cmd ("pt", class_support, cmd_set_record_btrace_pt, |
590042fc | 3257 | _("Set record btrace pt options."), |
b20a6524 MM |
3258 | &set_record_btrace_pt_cmdlist, |
3259 | "set record btrace pt ", 0, &set_record_btrace_cmdlist); | |
3260 | ||
3261 | add_prefix_cmd ("pt", class_support, cmd_show_record_btrace_pt, | |
590042fc | 3262 | _("Show record btrace pt options."), |
b20a6524 MM |
3263 | &show_record_btrace_pt_cmdlist, |
3264 | "show record btrace pt ", 0, &show_record_btrace_cmdlist); | |
3265 | ||
3266 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3267 | &record_btrace_conf.pt.size, | |
3268 | _("Set the record/replay pt buffer size."), | |
3269 | _("Show the record/replay pt buffer size."), _("\ | |
3270 | Bigger buffers allow longer recording but also take more time to process \ | |
3271 | the recorded execution.\n\ | |
3272 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3273 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3274 | &set_record_btrace_pt_cmdlist, | |
3275 | &show_record_btrace_pt_cmdlist); | |
3276 | ||
d9f719f1 | 3277 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3278 | |
3279 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3280 | xcalloc, xfree); | |
d33501a5 MM |
3281 | |
3282 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3283 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3284 | } |