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