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afedecd3 MM |
1 | /* Branch trace support for GDB, the GNU debugger. |
2 | ||
3666a048 | 3 | Copyright (C) 2013-2021 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" |
400b5eca | 39 | #include "gdbsupport/event-loop.h" |
70ad5bff | 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" |
93b54c8e | 45 | #include "async-event.h" |
159ed7d9 | 46 | #include <forward_list> |
afedecd3 | 47 | |
d9f719f1 PA |
48 | static const target_info record_btrace_target_info = { |
49 | "record-btrace", | |
50 | N_("Branch tracing target"), | |
51 | N_("Collect control-flow trace and provide the execution history.") | |
52 | }; | |
53 | ||
afedecd3 | 54 | /* The target_ops of record-btrace. */ |
f6ac5f3d PA |
55 | |
56 | class record_btrace_target final : public target_ops | |
57 | { | |
58 | public: | |
d9f719f1 PA |
59 | const target_info &info () const override |
60 | { return record_btrace_target_info; } | |
f6ac5f3d | 61 | |
66b4deae PA |
62 | strata stratum () const override { return record_stratum; } |
63 | ||
f6ac5f3d PA |
64 | void close () override; |
65 | void async (int) override; | |
66 | ||
67 | void detach (inferior *inf, int from_tty) override | |
68 | { record_detach (this, inf, from_tty); } | |
69 | ||
70 | void disconnect (const char *, int) override; | |
71 | ||
72 | void mourn_inferior () override | |
73 | { record_mourn_inferior (this); } | |
74 | ||
75 | void kill () override | |
76 | { record_kill (this); } | |
77 | ||
78 | enum record_method record_method (ptid_t ptid) override; | |
79 | ||
80 | void stop_recording () override; | |
81 | void info_record () override; | |
82 | ||
83 | void insn_history (int size, gdb_disassembly_flags flags) override; | |
84 | void insn_history_from (ULONGEST from, int size, | |
85 | gdb_disassembly_flags flags) override; | |
86 | void insn_history_range (ULONGEST begin, ULONGEST end, | |
87 | gdb_disassembly_flags flags) override; | |
88 | void call_history (int size, record_print_flags flags) override; | |
89 | void call_history_from (ULONGEST begin, int size, record_print_flags flags) | |
90 | override; | |
91 | void call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) | |
92 | override; | |
93 | ||
57810aa7 PA |
94 | bool record_is_replaying (ptid_t ptid) override; |
95 | bool record_will_replay (ptid_t ptid, int dir) override; | |
f6ac5f3d PA |
96 | void record_stop_replaying () override; |
97 | ||
98 | enum target_xfer_status xfer_partial (enum target_object object, | |
99 | const char *annex, | |
100 | gdb_byte *readbuf, | |
101 | const gdb_byte *writebuf, | |
102 | ULONGEST offset, ULONGEST len, | |
103 | ULONGEST *xfered_len) override; | |
104 | ||
105 | int insert_breakpoint (struct gdbarch *, | |
106 | struct bp_target_info *) override; | |
107 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
108 | enum remove_bp_reason) override; | |
109 | ||
110 | void fetch_registers (struct regcache *, int) override; | |
111 | ||
112 | void store_registers (struct regcache *, int) override; | |
113 | void prepare_to_store (struct regcache *) override; | |
114 | ||
115 | const struct frame_unwind *get_unwinder () override; | |
116 | ||
117 | const struct frame_unwind *get_tailcall_unwinder () override; | |
118 | ||
119 | void commit_resume () override; | |
120 | void resume (ptid_t, int, enum gdb_signal) override; | |
b60cea74 | 121 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
122 | |
123 | void stop (ptid_t) override; | |
124 | void update_thread_list () override; | |
57810aa7 | 125 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
126 | void goto_record_begin () override; |
127 | void goto_record_end () override; | |
128 | void goto_record (ULONGEST insn) override; | |
129 | ||
57810aa7 | 130 | bool can_execute_reverse () override; |
f6ac5f3d | 131 | |
57810aa7 PA |
132 | bool stopped_by_sw_breakpoint () override; |
133 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 134 | |
57810aa7 PA |
135 | bool stopped_by_hw_breakpoint () override; |
136 | bool supports_stopped_by_hw_breakpoint () override; | |
f6ac5f3d PA |
137 | |
138 | enum exec_direction_kind execution_direction () override; | |
139 | void prepare_to_generate_core () override; | |
140 | void done_generating_core () override; | |
141 | }; | |
142 | ||
143 | static record_btrace_target record_btrace_ops; | |
144 | ||
145 | /* Initialize the record-btrace target ops. */ | |
afedecd3 | 146 | |
76727919 TT |
147 | /* Token associated with a new-thread observer enabling branch tracing |
148 | for the new thread. */ | |
3dcfdc58 | 149 | static const gdb::observers::token record_btrace_thread_observer_token {}; |
afedecd3 | 150 | |
67b5c0c1 MM |
151 | /* Memory access types used in set/show record btrace replay-memory-access. */ |
152 | static const char replay_memory_access_read_only[] = "read-only"; | |
153 | static const char replay_memory_access_read_write[] = "read-write"; | |
154 | static const char *const replay_memory_access_types[] = | |
155 | { | |
156 | replay_memory_access_read_only, | |
157 | replay_memory_access_read_write, | |
158 | NULL | |
159 | }; | |
160 | ||
161 | /* The currently allowed replay memory access type. */ | |
162 | static const char *replay_memory_access = replay_memory_access_read_only; | |
163 | ||
4a4495d6 MM |
164 | /* The cpu state kinds. */ |
165 | enum record_btrace_cpu_state_kind | |
166 | { | |
167 | CS_AUTO, | |
168 | CS_NONE, | |
169 | CS_CPU | |
170 | }; | |
171 | ||
172 | /* The current cpu state. */ | |
173 | static enum record_btrace_cpu_state_kind record_btrace_cpu_state = CS_AUTO; | |
174 | ||
175 | /* The current cpu for trace decode. */ | |
176 | static struct btrace_cpu record_btrace_cpu; | |
177 | ||
67b5c0c1 MM |
178 | /* Command lists for "set/show record btrace". */ |
179 | static struct cmd_list_element *set_record_btrace_cmdlist; | |
180 | static struct cmd_list_element *show_record_btrace_cmdlist; | |
633785ff | 181 | |
70ad5bff MM |
182 | /* The execution direction of the last resume we got. See record-full.c. */ |
183 | static enum exec_direction_kind record_btrace_resume_exec_dir = EXEC_FORWARD; | |
184 | ||
185 | /* The async event handler for reverse/replay execution. */ | |
186 | static struct async_event_handler *record_btrace_async_inferior_event_handler; | |
187 | ||
aef92902 MM |
188 | /* A flag indicating that we are currently generating a core file. */ |
189 | static int record_btrace_generating_corefile; | |
190 | ||
f4abbc16 MM |
191 | /* The current branch trace configuration. */ |
192 | static struct btrace_config record_btrace_conf; | |
193 | ||
194 | /* Command list for "record btrace". */ | |
195 | static struct cmd_list_element *record_btrace_cmdlist; | |
196 | ||
d33501a5 MM |
197 | /* Command lists for "set/show record btrace bts". */ |
198 | static struct cmd_list_element *set_record_btrace_bts_cmdlist; | |
199 | static struct cmd_list_element *show_record_btrace_bts_cmdlist; | |
200 | ||
b20a6524 MM |
201 | /* Command lists for "set/show record btrace pt". */ |
202 | static struct cmd_list_element *set_record_btrace_pt_cmdlist; | |
203 | static struct cmd_list_element *show_record_btrace_pt_cmdlist; | |
204 | ||
4a4495d6 MM |
205 | /* Command list for "set record btrace cpu". */ |
206 | static struct cmd_list_element *set_record_btrace_cpu_cmdlist; | |
207 | ||
afedecd3 MM |
208 | /* Print a record-btrace debug message. Use do ... while (0) to avoid |
209 | ambiguities when used in if statements. */ | |
210 | ||
211 | #define DEBUG(msg, args...) \ | |
212 | do \ | |
213 | { \ | |
214 | if (record_debug != 0) \ | |
dda83cd7 | 215 | fprintf_unfiltered (gdb_stdlog, \ |
afedecd3 MM |
216 | "[record-btrace] " msg "\n", ##args); \ |
217 | } \ | |
218 | while (0) | |
219 | ||
220 | ||
4a4495d6 MM |
221 | /* Return the cpu configured by the user. Returns NULL if the cpu was |
222 | configured as auto. */ | |
223 | const struct btrace_cpu * | |
224 | record_btrace_get_cpu (void) | |
225 | { | |
226 | switch (record_btrace_cpu_state) | |
227 | { | |
228 | case CS_AUTO: | |
229 | return nullptr; | |
230 | ||
231 | case CS_NONE: | |
232 | record_btrace_cpu.vendor = CV_UNKNOWN; | |
233 | /* Fall through. */ | |
234 | case CS_CPU: | |
235 | return &record_btrace_cpu; | |
236 | } | |
237 | ||
238 | error (_("Internal error: bad record btrace cpu state.")); | |
239 | } | |
240 | ||
afedecd3 | 241 | /* Update the branch trace for the current thread and return a pointer to its |
066ce621 | 242 | thread_info. |
afedecd3 MM |
243 | |
244 | Throws an error if there is no thread or no trace. This function never | |
245 | returns NULL. */ | |
246 | ||
066ce621 MM |
247 | static struct thread_info * |
248 | require_btrace_thread (void) | |
afedecd3 | 249 | { |
afedecd3 MM |
250 | DEBUG ("require"); |
251 | ||
00431a78 | 252 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
253 | error (_("No thread.")); |
254 | ||
00431a78 PA |
255 | thread_info *tp = inferior_thread (); |
256 | ||
cd4007e4 MM |
257 | validate_registers_access (); |
258 | ||
4a4495d6 | 259 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 260 | |
6e07b1d2 | 261 | if (btrace_is_empty (tp)) |
afedecd3 MM |
262 | error (_("No trace.")); |
263 | ||
066ce621 MM |
264 | return tp; |
265 | } | |
266 | ||
267 | /* Update the branch trace for the current thread and return a pointer to its | |
268 | branch trace information struct. | |
269 | ||
270 | Throws an error if there is no thread or no trace. This function never | |
271 | returns NULL. */ | |
272 | ||
273 | static struct btrace_thread_info * | |
274 | require_btrace (void) | |
275 | { | |
276 | struct thread_info *tp; | |
277 | ||
278 | tp = require_btrace_thread (); | |
279 | ||
280 | return &tp->btrace; | |
afedecd3 MM |
281 | } |
282 | ||
283 | /* Enable branch tracing for one thread. Warn on errors. */ | |
284 | ||
285 | static void | |
286 | record_btrace_enable_warn (struct thread_info *tp) | |
287 | { | |
d89edf9b MM |
288 | /* Ignore this thread if its inferior is not recorded by us. */ |
289 | target_ops *rec = tp->inf->target_at (record_stratum); | |
290 | if (rec != &record_btrace_ops) | |
291 | return; | |
292 | ||
a70b8144 | 293 | try |
492d29ea PA |
294 | { |
295 | btrace_enable (tp, &record_btrace_conf); | |
296 | } | |
230d2906 | 297 | catch (const gdb_exception_error &error) |
492d29ea | 298 | { |
3d6e9d23 | 299 | warning ("%s", error.what ()); |
492d29ea | 300 | } |
afedecd3 MM |
301 | } |
302 | ||
afedecd3 MM |
303 | /* Enable automatic tracing of new threads. */ |
304 | ||
305 | static void | |
306 | record_btrace_auto_enable (void) | |
307 | { | |
308 | DEBUG ("attach thread observer"); | |
309 | ||
76727919 TT |
310 | gdb::observers::new_thread.attach (record_btrace_enable_warn, |
311 | record_btrace_thread_observer_token); | |
afedecd3 MM |
312 | } |
313 | ||
314 | /* Disable automatic tracing of new threads. */ | |
315 | ||
316 | static void | |
317 | record_btrace_auto_disable (void) | |
318 | { | |
afedecd3 MM |
319 | DEBUG ("detach thread observer"); |
320 | ||
76727919 | 321 | gdb::observers::new_thread.detach (record_btrace_thread_observer_token); |
afedecd3 MM |
322 | } |
323 | ||
70ad5bff MM |
324 | /* The record-btrace async event handler function. */ |
325 | ||
326 | static void | |
327 | record_btrace_handle_async_inferior_event (gdb_client_data data) | |
328 | { | |
b1a35af2 | 329 | inferior_event_handler (INF_REG_EVENT); |
70ad5bff MM |
330 | } |
331 | ||
c0272db5 TW |
332 | /* See record-btrace.h. */ |
333 | ||
334 | void | |
335 | record_btrace_push_target (void) | |
336 | { | |
337 | const char *format; | |
338 | ||
339 | record_btrace_auto_enable (); | |
340 | ||
341 | push_target (&record_btrace_ops); | |
342 | ||
343 | record_btrace_async_inferior_event_handler | |
344 | = create_async_event_handler (record_btrace_handle_async_inferior_event, | |
db20ebdf | 345 | NULL, "record-btrace"); |
c0272db5 TW |
346 | record_btrace_generating_corefile = 0; |
347 | ||
348 | format = btrace_format_short_string (record_btrace_conf.format); | |
76727919 | 349 | gdb::observers::record_changed.notify (current_inferior (), 1, "btrace", format); |
c0272db5 TW |
350 | } |
351 | ||
228f1508 SM |
352 | /* Disable btrace on a set of threads on scope exit. */ |
353 | ||
354 | struct scoped_btrace_disable | |
355 | { | |
356 | scoped_btrace_disable () = default; | |
357 | ||
358 | DISABLE_COPY_AND_ASSIGN (scoped_btrace_disable); | |
359 | ||
360 | ~scoped_btrace_disable () | |
361 | { | |
362 | for (thread_info *tp : m_threads) | |
363 | btrace_disable (tp); | |
364 | } | |
365 | ||
366 | void add_thread (thread_info *thread) | |
367 | { | |
368 | m_threads.push_front (thread); | |
369 | } | |
370 | ||
371 | void discard () | |
372 | { | |
373 | m_threads.clear (); | |
374 | } | |
375 | ||
376 | private: | |
377 | std::forward_list<thread_info *> m_threads; | |
378 | }; | |
379 | ||
d9f719f1 | 380 | /* Open target record-btrace. */ |
afedecd3 | 381 | |
d9f719f1 PA |
382 | static void |
383 | record_btrace_target_open (const char *args, int from_tty) | |
afedecd3 | 384 | { |
228f1508 SM |
385 | /* If we fail to enable btrace for one thread, disable it for the threads for |
386 | which it was successfully enabled. */ | |
387 | scoped_btrace_disable btrace_disable; | |
afedecd3 MM |
388 | |
389 | DEBUG ("open"); | |
390 | ||
8213266a | 391 | record_preopen (); |
afedecd3 | 392 | |
55f6301a | 393 | if (!target_has_execution ()) |
afedecd3 MM |
394 | error (_("The program is not being run.")); |
395 | ||
d89edf9b | 396 | for (thread_info *tp : current_inferior ()->non_exited_threads ()) |
5d5658a1 | 397 | if (args == NULL || *args == 0 || number_is_in_list (args, tp->global_num)) |
afedecd3 | 398 | { |
f4abbc16 | 399 | btrace_enable (tp, &record_btrace_conf); |
afedecd3 | 400 | |
228f1508 | 401 | btrace_disable.add_thread (tp); |
afedecd3 MM |
402 | } |
403 | ||
c0272db5 | 404 | record_btrace_push_target (); |
afedecd3 | 405 | |
228f1508 | 406 | btrace_disable.discard (); |
afedecd3 MM |
407 | } |
408 | ||
f6ac5f3d | 409 | /* The stop_recording method of target record-btrace. */ |
afedecd3 | 410 | |
f6ac5f3d PA |
411 | void |
412 | record_btrace_target::stop_recording () | |
afedecd3 | 413 | { |
afedecd3 MM |
414 | DEBUG ("stop recording"); |
415 | ||
416 | record_btrace_auto_disable (); | |
417 | ||
d89edf9b | 418 | for (thread_info *tp : current_inferior ()->non_exited_threads ()) |
afedecd3 MM |
419 | if (tp->btrace.target != NULL) |
420 | btrace_disable (tp); | |
421 | } | |
422 | ||
f6ac5f3d | 423 | /* The disconnect method of target record-btrace. */ |
c0272db5 | 424 | |
f6ac5f3d PA |
425 | void |
426 | record_btrace_target::disconnect (const char *args, | |
427 | int from_tty) | |
c0272db5 | 428 | { |
b6a8c27b | 429 | struct target_ops *beneath = this->beneath (); |
c0272db5 TW |
430 | |
431 | /* Do not stop recording, just clean up GDB side. */ | |
f6ac5f3d | 432 | unpush_target (this); |
c0272db5 TW |
433 | |
434 | /* Forward disconnect. */ | |
f6ac5f3d | 435 | beneath->disconnect (args, from_tty); |
c0272db5 TW |
436 | } |
437 | ||
f6ac5f3d | 438 | /* The close method of target record-btrace. */ |
afedecd3 | 439 | |
f6ac5f3d PA |
440 | void |
441 | record_btrace_target::close () | |
afedecd3 | 442 | { |
70ad5bff MM |
443 | if (record_btrace_async_inferior_event_handler != NULL) |
444 | delete_async_event_handler (&record_btrace_async_inferior_event_handler); | |
445 | ||
99c819ee MM |
446 | /* Make sure automatic recording gets disabled even if we did not stop |
447 | recording before closing the record-btrace target. */ | |
448 | record_btrace_auto_disable (); | |
449 | ||
568e808b MM |
450 | /* We should have already stopped recording. |
451 | Tear down btrace in case we have not. */ | |
d89edf9b | 452 | for (thread_info *tp : current_inferior ()->non_exited_threads ()) |
568e808b | 453 | btrace_teardown (tp); |
afedecd3 MM |
454 | } |
455 | ||
f6ac5f3d | 456 | /* The async method of target record-btrace. */ |
b7d2e916 | 457 | |
f6ac5f3d PA |
458 | void |
459 | record_btrace_target::async (int enable) | |
b7d2e916 | 460 | { |
6a3753b3 | 461 | if (enable) |
b7d2e916 PA |
462 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
463 | else | |
464 | clear_async_event_handler (record_btrace_async_inferior_event_handler); | |
465 | ||
b6a8c27b | 466 | this->beneath ()->async (enable); |
b7d2e916 PA |
467 | } |
468 | ||
d33501a5 MM |
469 | /* Adjusts the size and returns a human readable size suffix. */ |
470 | ||
471 | static const char * | |
472 | record_btrace_adjust_size (unsigned int *size) | |
473 | { | |
474 | unsigned int sz; | |
475 | ||
476 | sz = *size; | |
477 | ||
478 | if ((sz & ((1u << 30) - 1)) == 0) | |
479 | { | |
480 | *size = sz >> 30; | |
481 | return "GB"; | |
482 | } | |
483 | else if ((sz & ((1u << 20) - 1)) == 0) | |
484 | { | |
485 | *size = sz >> 20; | |
486 | return "MB"; | |
487 | } | |
488 | else if ((sz & ((1u << 10) - 1)) == 0) | |
489 | { | |
490 | *size = sz >> 10; | |
491 | return "kB"; | |
492 | } | |
493 | else | |
494 | return ""; | |
495 | } | |
496 | ||
497 | /* Print a BTS configuration. */ | |
498 | ||
499 | static void | |
500 | record_btrace_print_bts_conf (const struct btrace_config_bts *conf) | |
501 | { | |
502 | const char *suffix; | |
503 | unsigned int size; | |
504 | ||
505 | size = conf->size; | |
506 | if (size > 0) | |
507 | { | |
508 | suffix = record_btrace_adjust_size (&size); | |
509 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
510 | } | |
511 | } | |
512 | ||
bc504a31 | 513 | /* Print an Intel Processor Trace configuration. */ |
b20a6524 MM |
514 | |
515 | static void | |
516 | record_btrace_print_pt_conf (const struct btrace_config_pt *conf) | |
517 | { | |
518 | const char *suffix; | |
519 | unsigned int size; | |
520 | ||
521 | size = conf->size; | |
522 | if (size > 0) | |
523 | { | |
524 | suffix = record_btrace_adjust_size (&size); | |
525 | printf_unfiltered (_("Buffer size: %u%s.\n"), size, suffix); | |
526 | } | |
527 | } | |
528 | ||
d33501a5 MM |
529 | /* Print a branch tracing configuration. */ |
530 | ||
531 | static void | |
532 | record_btrace_print_conf (const struct btrace_config *conf) | |
533 | { | |
534 | printf_unfiltered (_("Recording format: %s.\n"), | |
535 | btrace_format_string (conf->format)); | |
536 | ||
537 | switch (conf->format) | |
538 | { | |
539 | case BTRACE_FORMAT_NONE: | |
540 | return; | |
541 | ||
542 | case BTRACE_FORMAT_BTS: | |
543 | record_btrace_print_bts_conf (&conf->bts); | |
544 | return; | |
b20a6524 MM |
545 | |
546 | case BTRACE_FORMAT_PT: | |
547 | record_btrace_print_pt_conf (&conf->pt); | |
548 | return; | |
d33501a5 MM |
549 | } |
550 | ||
40c94099 | 551 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format.")); |
d33501a5 MM |
552 | } |
553 | ||
f6ac5f3d | 554 | /* The info_record method of target record-btrace. */ |
afedecd3 | 555 | |
f6ac5f3d PA |
556 | void |
557 | record_btrace_target::info_record () | |
afedecd3 MM |
558 | { |
559 | struct btrace_thread_info *btinfo; | |
f4abbc16 | 560 | const struct btrace_config *conf; |
afedecd3 | 561 | struct thread_info *tp; |
31fd9caa | 562 | unsigned int insns, calls, gaps; |
afedecd3 MM |
563 | |
564 | DEBUG ("info"); | |
565 | ||
5b6d1e4f | 566 | if (inferior_ptid == null_ptid) |
afedecd3 MM |
567 | error (_("No thread.")); |
568 | ||
5b6d1e4f PA |
569 | tp = inferior_thread (); |
570 | ||
cd4007e4 MM |
571 | validate_registers_access (); |
572 | ||
f4abbc16 MM |
573 | btinfo = &tp->btrace; |
574 | ||
f6ac5f3d | 575 | conf = ::btrace_conf (btinfo); |
f4abbc16 | 576 | if (conf != NULL) |
d33501a5 | 577 | record_btrace_print_conf (conf); |
f4abbc16 | 578 | |
4a4495d6 | 579 | btrace_fetch (tp, record_btrace_get_cpu ()); |
afedecd3 | 580 | |
23a7fe75 MM |
581 | insns = 0; |
582 | calls = 0; | |
31fd9caa | 583 | gaps = 0; |
23a7fe75 | 584 | |
6e07b1d2 | 585 | if (!btrace_is_empty (tp)) |
23a7fe75 MM |
586 | { |
587 | struct btrace_call_iterator call; | |
588 | struct btrace_insn_iterator insn; | |
589 | ||
590 | btrace_call_end (&call, btinfo); | |
591 | btrace_call_prev (&call, 1); | |
5de9129b | 592 | calls = btrace_call_number (&call); |
23a7fe75 MM |
593 | |
594 | btrace_insn_end (&insn, btinfo); | |
5de9129b | 595 | insns = btrace_insn_number (&insn); |
31fd9caa | 596 | |
69090cee TW |
597 | /* If the last instruction is not a gap, it is the current instruction |
598 | that is not actually part of the record. */ | |
599 | if (btrace_insn_get (&insn) != NULL) | |
600 | insns -= 1; | |
31fd9caa MM |
601 | |
602 | gaps = btinfo->ngaps; | |
23a7fe75 | 603 | } |
afedecd3 | 604 | |
31fd9caa | 605 | printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) " |
43792cf0 | 606 | "for thread %s (%s).\n"), insns, calls, gaps, |
a068643d TT |
607 | print_thread_id (tp), |
608 | target_pid_to_str (tp->ptid).c_str ()); | |
07bbe694 MM |
609 | |
610 | if (btrace_is_replaying (tp)) | |
611 | printf_unfiltered (_("Replay in progress. At instruction %u.\n"), | |
612 | btrace_insn_number (btinfo->replay)); | |
afedecd3 MM |
613 | } |
614 | ||
31fd9caa MM |
615 | /* Print a decode error. */ |
616 | ||
617 | static void | |
618 | btrace_ui_out_decode_error (struct ui_out *uiout, int errcode, | |
619 | enum btrace_format format) | |
620 | { | |
508352a9 | 621 | const char *errstr = btrace_decode_error (format, errcode); |
31fd9caa | 622 | |
112e8700 | 623 | uiout->text (_("[")); |
508352a9 TW |
624 | /* ERRCODE > 0 indicates notifications on BTRACE_FORMAT_PT. */ |
625 | if (!(format == BTRACE_FORMAT_PT && errcode > 0)) | |
31fd9caa | 626 | { |
112e8700 | 627 | uiout->text (_("decode error (")); |
381befee | 628 | uiout->field_signed ("errcode", errcode); |
112e8700 | 629 | uiout->text (_("): ")); |
31fd9caa | 630 | } |
112e8700 SM |
631 | uiout->text (errstr); |
632 | uiout->text (_("]\n")); | |
31fd9caa MM |
633 | } |
634 | ||
f94cc897 MM |
635 | /* A range of source lines. */ |
636 | ||
637 | struct btrace_line_range | |
638 | { | |
639 | /* The symtab this line is from. */ | |
640 | struct symtab *symtab; | |
641 | ||
642 | /* The first line (inclusive). */ | |
643 | int begin; | |
644 | ||
645 | /* The last line (exclusive). */ | |
646 | int end; | |
647 | }; | |
648 | ||
649 | /* Construct a line range. */ | |
650 | ||
651 | static struct btrace_line_range | |
652 | btrace_mk_line_range (struct symtab *symtab, int begin, int end) | |
653 | { | |
654 | struct btrace_line_range range; | |
655 | ||
656 | range.symtab = symtab; | |
657 | range.begin = begin; | |
658 | range.end = end; | |
659 | ||
660 | return range; | |
661 | } | |
662 | ||
663 | /* Add a line to a line range. */ | |
664 | ||
665 | static struct btrace_line_range | |
666 | btrace_line_range_add (struct btrace_line_range range, int line) | |
667 | { | |
668 | if (range.end <= range.begin) | |
669 | { | |
670 | /* This is the first entry. */ | |
671 | range.begin = line; | |
672 | range.end = line + 1; | |
673 | } | |
674 | else if (line < range.begin) | |
675 | range.begin = line; | |
676 | else if (range.end < line) | |
677 | range.end = line; | |
678 | ||
679 | return range; | |
680 | } | |
681 | ||
682 | /* Return non-zero if RANGE is empty, zero otherwise. */ | |
683 | ||
684 | static int | |
685 | btrace_line_range_is_empty (struct btrace_line_range range) | |
686 | { | |
687 | return range.end <= range.begin; | |
688 | } | |
689 | ||
690 | /* Return non-zero if LHS contains RHS, zero otherwise. */ | |
691 | ||
692 | static int | |
693 | btrace_line_range_contains_range (struct btrace_line_range lhs, | |
694 | struct btrace_line_range rhs) | |
695 | { | |
696 | return ((lhs.symtab == rhs.symtab) | |
697 | && (lhs.begin <= rhs.begin) | |
698 | && (rhs.end <= lhs.end)); | |
699 | } | |
700 | ||
701 | /* Find the line range associated with PC. */ | |
702 | ||
703 | static struct btrace_line_range | |
704 | btrace_find_line_range (CORE_ADDR pc) | |
705 | { | |
706 | struct btrace_line_range range; | |
707 | struct linetable_entry *lines; | |
708 | struct linetable *ltable; | |
709 | struct symtab *symtab; | |
710 | int nlines, i; | |
711 | ||
712 | symtab = find_pc_line_symtab (pc); | |
713 | if (symtab == NULL) | |
714 | return btrace_mk_line_range (NULL, 0, 0); | |
715 | ||
716 | ltable = SYMTAB_LINETABLE (symtab); | |
717 | if (ltable == NULL) | |
718 | return btrace_mk_line_range (symtab, 0, 0); | |
719 | ||
720 | nlines = ltable->nitems; | |
721 | lines = ltable->item; | |
722 | if (nlines <= 0) | |
723 | return btrace_mk_line_range (symtab, 0, 0); | |
724 | ||
725 | range = btrace_mk_line_range (symtab, 0, 0); | |
726 | for (i = 0; i < nlines - 1; i++) | |
727 | { | |
8c95582d AB |
728 | /* The test of is_stmt here was added when the is_stmt field was |
729 | introduced to the 'struct linetable_entry' structure. This | |
730 | ensured that this loop maintained the same behaviour as before we | |
731 | introduced is_stmt. That said, it might be that we would be | |
732 | better off not checking is_stmt here, this would lead to us | |
733 | possibly adding more line numbers to the range. At the time this | |
734 | change was made I was unsure how to test this so chose to go with | |
735 | maintaining the existing experience. */ | |
736 | if ((lines[i].pc == pc) && (lines[i].line != 0) | |
737 | && (lines[i].is_stmt == 1)) | |
f94cc897 MM |
738 | range = btrace_line_range_add (range, lines[i].line); |
739 | } | |
740 | ||
741 | return range; | |
742 | } | |
743 | ||
744 | /* Print source lines in LINES to UIOUT. | |
745 | ||
746 | UI_ITEM_CHAIN is a cleanup chain for the last source line and the | |
747 | instructions corresponding to that source line. When printing a new source | |
748 | line, we do the cleanups for the open chain and open a new cleanup chain for | |
749 | the new source line. If the source line range in LINES is not empty, this | |
750 | function will leave the cleanup chain for the last printed source line open | |
751 | so instructions can be added to it. */ | |
752 | ||
753 | static void | |
754 | btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout, | |
7ea78b59 SM |
755 | gdb::optional<ui_out_emit_tuple> *src_and_asm_tuple, |
756 | gdb::optional<ui_out_emit_list> *asm_list, | |
757 | gdb_disassembly_flags flags) | |
f94cc897 | 758 | { |
8d297bbf | 759 | print_source_lines_flags psl_flags; |
f94cc897 | 760 | |
f94cc897 MM |
761 | if (flags & DISASSEMBLY_FILENAME) |
762 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
763 | ||
7ea78b59 | 764 | for (int line = lines.begin; line < lines.end; ++line) |
f94cc897 | 765 | { |
7ea78b59 | 766 | asm_list->reset (); |
f94cc897 | 767 | |
7ea78b59 | 768 | src_and_asm_tuple->emplace (uiout, "src_and_asm_line"); |
f94cc897 MM |
769 | |
770 | print_source_lines (lines.symtab, line, line + 1, psl_flags); | |
771 | ||
7ea78b59 | 772 | asm_list->emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
773 | } |
774 | } | |
775 | ||
afedecd3 MM |
776 | /* Disassemble a section of the recorded instruction trace. */ |
777 | ||
778 | static void | |
23a7fe75 | 779 | btrace_insn_history (struct ui_out *uiout, |
31fd9caa | 780 | const struct btrace_thread_info *btinfo, |
23a7fe75 | 781 | const struct btrace_insn_iterator *begin, |
9a24775b PA |
782 | const struct btrace_insn_iterator *end, |
783 | gdb_disassembly_flags flags) | |
afedecd3 | 784 | { |
9a24775b PA |
785 | DEBUG ("itrace (0x%x): [%u; %u)", (unsigned) flags, |
786 | btrace_insn_number (begin), btrace_insn_number (end)); | |
afedecd3 | 787 | |
f94cc897 MM |
788 | flags |= DISASSEMBLY_SPECULATIVE; |
789 | ||
7ea78b59 SM |
790 | struct gdbarch *gdbarch = target_gdbarch (); |
791 | btrace_line_range last_lines = btrace_mk_line_range (NULL, 0, 0); | |
f94cc897 | 792 | |
7ea78b59 | 793 | ui_out_emit_list list_emitter (uiout, "asm_insns"); |
f94cc897 | 794 | |
7ea78b59 SM |
795 | gdb::optional<ui_out_emit_tuple> src_and_asm_tuple; |
796 | gdb::optional<ui_out_emit_list> asm_list; | |
afedecd3 | 797 | |
046bebe1 | 798 | gdb_pretty_print_disassembler disasm (gdbarch, uiout); |
8b172ce7 | 799 | |
7ea78b59 | 800 | for (btrace_insn_iterator it = *begin; btrace_insn_cmp (&it, end) != 0; |
dda83cd7 | 801 | btrace_insn_next (&it, 1)) |
afedecd3 | 802 | { |
23a7fe75 MM |
803 | const struct btrace_insn *insn; |
804 | ||
805 | insn = btrace_insn_get (&it); | |
806 | ||
31fd9caa MM |
807 | /* A NULL instruction indicates a gap in the trace. */ |
808 | if (insn == NULL) | |
809 | { | |
810 | const struct btrace_config *conf; | |
811 | ||
812 | conf = btrace_conf (btinfo); | |
afedecd3 | 813 | |
31fd9caa MM |
814 | /* We have trace so we must have a configuration. */ |
815 | gdb_assert (conf != NULL); | |
816 | ||
69090cee TW |
817 | uiout->field_fmt ("insn-number", "%u", |
818 | btrace_insn_number (&it)); | |
819 | uiout->text ("\t"); | |
820 | ||
821 | btrace_ui_out_decode_error (uiout, btrace_insn_get_error (&it), | |
31fd9caa MM |
822 | conf->format); |
823 | } | |
824 | else | |
825 | { | |
f94cc897 | 826 | struct disasm_insn dinsn; |
da8c46d2 | 827 | |
f94cc897 | 828 | if ((flags & DISASSEMBLY_SOURCE) != 0) |
da8c46d2 | 829 | { |
f94cc897 MM |
830 | struct btrace_line_range lines; |
831 | ||
832 | lines = btrace_find_line_range (insn->pc); | |
833 | if (!btrace_line_range_is_empty (lines) | |
834 | && !btrace_line_range_contains_range (last_lines, lines)) | |
835 | { | |
7ea78b59 SM |
836 | btrace_print_lines (lines, uiout, &src_and_asm_tuple, &asm_list, |
837 | flags); | |
f94cc897 MM |
838 | last_lines = lines; |
839 | } | |
7ea78b59 | 840 | else if (!src_and_asm_tuple.has_value ()) |
f94cc897 | 841 | { |
7ea78b59 SM |
842 | gdb_assert (!asm_list.has_value ()); |
843 | ||
844 | src_and_asm_tuple.emplace (uiout, "src_and_asm_line"); | |
845 | ||
f94cc897 | 846 | /* No source information. */ |
7ea78b59 | 847 | asm_list.emplace (uiout, "line_asm_insn"); |
f94cc897 MM |
848 | } |
849 | ||
7ea78b59 SM |
850 | gdb_assert (src_and_asm_tuple.has_value ()); |
851 | gdb_assert (asm_list.has_value ()); | |
da8c46d2 | 852 | } |
da8c46d2 | 853 | |
f94cc897 MM |
854 | memset (&dinsn, 0, sizeof (dinsn)); |
855 | dinsn.number = btrace_insn_number (&it); | |
856 | dinsn.addr = insn->pc; | |
31fd9caa | 857 | |
da8c46d2 | 858 | if ((insn->flags & BTRACE_INSN_FLAG_SPECULATIVE) != 0) |
f94cc897 | 859 | dinsn.is_speculative = 1; |
da8c46d2 | 860 | |
046bebe1 | 861 | disasm.pretty_print_insn (&dinsn, flags); |
31fd9caa | 862 | } |
afedecd3 MM |
863 | } |
864 | } | |
865 | ||
f6ac5f3d | 866 | /* The insn_history method of target record-btrace. */ |
afedecd3 | 867 | |
f6ac5f3d PA |
868 | void |
869 | record_btrace_target::insn_history (int size, gdb_disassembly_flags flags) | |
afedecd3 MM |
870 | { |
871 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
872 | struct btrace_insn_history *history; |
873 | struct btrace_insn_iterator begin, end; | |
afedecd3 | 874 | struct ui_out *uiout; |
23a7fe75 | 875 | unsigned int context, covered; |
afedecd3 MM |
876 | |
877 | uiout = current_uiout; | |
2e783024 | 878 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 879 | context = abs (size); |
afedecd3 MM |
880 | if (context == 0) |
881 | error (_("Bad record instruction-history-size.")); | |
882 | ||
23a7fe75 MM |
883 | btinfo = require_btrace (); |
884 | history = btinfo->insn_history; | |
885 | if (history == NULL) | |
afedecd3 | 886 | { |
07bbe694 | 887 | struct btrace_insn_iterator *replay; |
afedecd3 | 888 | |
9a24775b | 889 | DEBUG ("insn-history (0x%x): %d", (unsigned) flags, size); |
afedecd3 | 890 | |
07bbe694 MM |
891 | /* If we're replaying, we start at the replay position. Otherwise, we |
892 | start at the tail of the trace. */ | |
893 | replay = btinfo->replay; | |
894 | if (replay != NULL) | |
895 | begin = *replay; | |
896 | else | |
897 | btrace_insn_end (&begin, btinfo); | |
898 | ||
899 | /* We start from here and expand in the requested direction. Then we | |
900 | expand in the other direction, as well, to fill up any remaining | |
901 | context. */ | |
902 | end = begin; | |
903 | if (size < 0) | |
904 | { | |
905 | /* We want the current position covered, as well. */ | |
906 | covered = btrace_insn_next (&end, 1); | |
907 | covered += btrace_insn_prev (&begin, context - covered); | |
908 | covered += btrace_insn_next (&end, context - covered); | |
909 | } | |
910 | else | |
911 | { | |
912 | covered = btrace_insn_next (&end, context); | |
913 | covered += btrace_insn_prev (&begin, context - covered); | |
914 | } | |
afedecd3 MM |
915 | } |
916 | else | |
917 | { | |
23a7fe75 MM |
918 | begin = history->begin; |
919 | end = history->end; | |
afedecd3 | 920 | |
9a24775b | 921 | DEBUG ("insn-history (0x%x): %d, prev: [%u; %u)", (unsigned) flags, size, |
23a7fe75 | 922 | btrace_insn_number (&begin), btrace_insn_number (&end)); |
afedecd3 | 923 | |
23a7fe75 MM |
924 | if (size < 0) |
925 | { | |
926 | end = begin; | |
927 | covered = btrace_insn_prev (&begin, context); | |
928 | } | |
929 | else | |
930 | { | |
931 | begin = end; | |
932 | covered = btrace_insn_next (&end, context); | |
933 | } | |
afedecd3 MM |
934 | } |
935 | ||
23a7fe75 | 936 | if (covered > 0) |
31fd9caa | 937 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
938 | else |
939 | { | |
940 | if (size < 0) | |
941 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
942 | else | |
943 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
944 | } | |
afedecd3 | 945 | |
23a7fe75 | 946 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
947 | } |
948 | ||
f6ac5f3d | 949 | /* The insn_history_range method of target record-btrace. */ |
afedecd3 | 950 | |
f6ac5f3d PA |
951 | void |
952 | record_btrace_target::insn_history_range (ULONGEST from, ULONGEST to, | |
953 | gdb_disassembly_flags flags) | |
afedecd3 MM |
954 | { |
955 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 956 | struct btrace_insn_iterator begin, end; |
afedecd3 | 957 | struct ui_out *uiout; |
23a7fe75 MM |
958 | unsigned int low, high; |
959 | int found; | |
afedecd3 MM |
960 | |
961 | uiout = current_uiout; | |
2e783024 | 962 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
23a7fe75 MM |
963 | low = from; |
964 | high = to; | |
afedecd3 | 965 | |
9a24775b | 966 | DEBUG ("insn-history (0x%x): [%u; %u)", (unsigned) flags, low, high); |
afedecd3 MM |
967 | |
968 | /* Check for wrap-arounds. */ | |
23a7fe75 | 969 | if (low != from || high != to) |
afedecd3 MM |
970 | error (_("Bad range.")); |
971 | ||
0688d04e | 972 | if (high < low) |
afedecd3 MM |
973 | error (_("Bad range.")); |
974 | ||
23a7fe75 | 975 | btinfo = require_btrace (); |
afedecd3 | 976 | |
23a7fe75 MM |
977 | found = btrace_find_insn_by_number (&begin, btinfo, low); |
978 | if (found == 0) | |
979 | error (_("Range out of bounds.")); | |
afedecd3 | 980 | |
23a7fe75 MM |
981 | found = btrace_find_insn_by_number (&end, btinfo, high); |
982 | if (found == 0) | |
0688d04e MM |
983 | { |
984 | /* Silently truncate the range. */ | |
985 | btrace_insn_end (&end, btinfo); | |
986 | } | |
987 | else | |
988 | { | |
989 | /* We want both begin and end to be inclusive. */ | |
990 | btrace_insn_next (&end, 1); | |
991 | } | |
afedecd3 | 992 | |
31fd9caa | 993 | btrace_insn_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 994 | btrace_set_insn_history (btinfo, &begin, &end); |
afedecd3 MM |
995 | } |
996 | ||
f6ac5f3d | 997 | /* The insn_history_from method of target record-btrace. */ |
afedecd3 | 998 | |
f6ac5f3d PA |
999 | void |
1000 | record_btrace_target::insn_history_from (ULONGEST from, int size, | |
1001 | gdb_disassembly_flags flags) | |
afedecd3 MM |
1002 | { |
1003 | ULONGEST begin, end, context; | |
1004 | ||
1005 | context = abs (size); | |
0688d04e MM |
1006 | if (context == 0) |
1007 | error (_("Bad record instruction-history-size.")); | |
afedecd3 MM |
1008 | |
1009 | if (size < 0) | |
1010 | { | |
1011 | end = from; | |
1012 | ||
1013 | if (from < context) | |
1014 | begin = 0; | |
1015 | else | |
0688d04e | 1016 | begin = from - context + 1; |
afedecd3 MM |
1017 | } |
1018 | else | |
1019 | { | |
1020 | begin = from; | |
0688d04e | 1021 | end = from + context - 1; |
afedecd3 MM |
1022 | |
1023 | /* Check for wrap-around. */ | |
1024 | if (end < begin) | |
1025 | end = ULONGEST_MAX; | |
1026 | } | |
1027 | ||
f6ac5f3d | 1028 | insn_history_range (begin, end, flags); |
afedecd3 MM |
1029 | } |
1030 | ||
1031 | /* Print the instruction number range for a function call history line. */ | |
1032 | ||
1033 | static void | |
23a7fe75 MM |
1034 | btrace_call_history_insn_range (struct ui_out *uiout, |
1035 | const struct btrace_function *bfun) | |
afedecd3 | 1036 | { |
7acbe133 MM |
1037 | unsigned int begin, end, size; |
1038 | ||
0860c437 | 1039 | size = bfun->insn.size (); |
7acbe133 | 1040 | gdb_assert (size > 0); |
afedecd3 | 1041 | |
23a7fe75 | 1042 | begin = bfun->insn_offset; |
7acbe133 | 1043 | end = begin + size - 1; |
afedecd3 | 1044 | |
1f77b012 | 1045 | uiout->field_unsigned ("insn begin", begin); |
112e8700 | 1046 | uiout->text (","); |
1f77b012 | 1047 | uiout->field_unsigned ("insn end", end); |
afedecd3 MM |
1048 | } |
1049 | ||
ce0dfbea MM |
1050 | /* Compute the lowest and highest source line for the instructions in BFUN |
1051 | and return them in PBEGIN and PEND. | |
1052 | Ignore instructions that can't be mapped to BFUN, e.g. instructions that | |
1053 | result from inlining or macro expansion. */ | |
1054 | ||
1055 | static void | |
1056 | btrace_compute_src_line_range (const struct btrace_function *bfun, | |
1057 | int *pbegin, int *pend) | |
1058 | { | |
ce0dfbea MM |
1059 | struct symtab *symtab; |
1060 | struct symbol *sym; | |
ce0dfbea MM |
1061 | int begin, end; |
1062 | ||
1063 | begin = INT_MAX; | |
1064 | end = INT_MIN; | |
1065 | ||
1066 | sym = bfun->sym; | |
1067 | if (sym == NULL) | |
1068 | goto out; | |
1069 | ||
1070 | symtab = symbol_symtab (sym); | |
1071 | ||
0860c437 | 1072 | for (const btrace_insn &insn : bfun->insn) |
ce0dfbea MM |
1073 | { |
1074 | struct symtab_and_line sal; | |
1075 | ||
0860c437 | 1076 | sal = find_pc_line (insn.pc, 0); |
ce0dfbea MM |
1077 | if (sal.symtab != symtab || sal.line == 0) |
1078 | continue; | |
1079 | ||
325fac50 PA |
1080 | begin = std::min (begin, sal.line); |
1081 | end = std::max (end, sal.line); | |
ce0dfbea MM |
1082 | } |
1083 | ||
1084 | out: | |
1085 | *pbegin = begin; | |
1086 | *pend = end; | |
1087 | } | |
1088 | ||
afedecd3 MM |
1089 | /* Print the source line information for a function call history line. */ |
1090 | ||
1091 | static void | |
23a7fe75 MM |
1092 | btrace_call_history_src_line (struct ui_out *uiout, |
1093 | const struct btrace_function *bfun) | |
afedecd3 MM |
1094 | { |
1095 | struct symbol *sym; | |
23a7fe75 | 1096 | int begin, end; |
afedecd3 MM |
1097 | |
1098 | sym = bfun->sym; | |
1099 | if (sym == NULL) | |
1100 | return; | |
1101 | ||
112e8700 | 1102 | uiout->field_string ("file", |
cbe56571 | 1103 | symtab_to_filename_for_display (symbol_symtab (sym)), |
e43b10e1 | 1104 | file_name_style.style ()); |
afedecd3 | 1105 | |
ce0dfbea | 1106 | btrace_compute_src_line_range (bfun, &begin, &end); |
23a7fe75 | 1107 | if (end < begin) |
afedecd3 MM |
1108 | return; |
1109 | ||
112e8700 | 1110 | uiout->text (":"); |
381befee | 1111 | uiout->field_signed ("min line", begin); |
afedecd3 | 1112 | |
23a7fe75 | 1113 | if (end == begin) |
afedecd3 MM |
1114 | return; |
1115 | ||
112e8700 | 1116 | uiout->text (","); |
381befee | 1117 | uiout->field_signed ("max line", end); |
afedecd3 MM |
1118 | } |
1119 | ||
0b722aec MM |
1120 | /* Get the name of a branch trace function. */ |
1121 | ||
1122 | static const char * | |
1123 | btrace_get_bfun_name (const struct btrace_function *bfun) | |
1124 | { | |
1125 | struct minimal_symbol *msym; | |
1126 | struct symbol *sym; | |
1127 | ||
1128 | if (bfun == NULL) | |
1129 | return "??"; | |
1130 | ||
1131 | msym = bfun->msym; | |
1132 | sym = bfun->sym; | |
1133 | ||
1134 | if (sym != NULL) | |
987012b8 | 1135 | return sym->print_name (); |
0b722aec | 1136 | else if (msym != NULL) |
c9d95fa3 | 1137 | return msym->print_name (); |
0b722aec MM |
1138 | else |
1139 | return "??"; | |
1140 | } | |
1141 | ||
afedecd3 MM |
1142 | /* Disassemble a section of the recorded function trace. */ |
1143 | ||
1144 | static void | |
23a7fe75 | 1145 | btrace_call_history (struct ui_out *uiout, |
8710b709 | 1146 | const struct btrace_thread_info *btinfo, |
23a7fe75 MM |
1147 | const struct btrace_call_iterator *begin, |
1148 | const struct btrace_call_iterator *end, | |
8d297bbf | 1149 | int int_flags) |
afedecd3 | 1150 | { |
23a7fe75 | 1151 | struct btrace_call_iterator it; |
8d297bbf | 1152 | record_print_flags flags = (enum record_print_flag) int_flags; |
afedecd3 | 1153 | |
8d297bbf | 1154 | DEBUG ("ftrace (0x%x): [%u; %u)", int_flags, btrace_call_number (begin), |
23a7fe75 | 1155 | btrace_call_number (end)); |
afedecd3 | 1156 | |
23a7fe75 | 1157 | for (it = *begin; btrace_call_cmp (&it, end) < 0; btrace_call_next (&it, 1)) |
afedecd3 | 1158 | { |
23a7fe75 MM |
1159 | const struct btrace_function *bfun; |
1160 | struct minimal_symbol *msym; | |
1161 | struct symbol *sym; | |
1162 | ||
1163 | bfun = btrace_call_get (&it); | |
23a7fe75 | 1164 | sym = bfun->sym; |
0b722aec | 1165 | msym = bfun->msym; |
23a7fe75 | 1166 | |
afedecd3 | 1167 | /* Print the function index. */ |
1f77b012 | 1168 | uiout->field_unsigned ("index", bfun->number); |
112e8700 | 1169 | uiout->text ("\t"); |
afedecd3 | 1170 | |
31fd9caa MM |
1171 | /* Indicate gaps in the trace. */ |
1172 | if (bfun->errcode != 0) | |
1173 | { | |
1174 | const struct btrace_config *conf; | |
1175 | ||
1176 | conf = btrace_conf (btinfo); | |
1177 | ||
1178 | /* We have trace so we must have a configuration. */ | |
1179 | gdb_assert (conf != NULL); | |
1180 | ||
1181 | btrace_ui_out_decode_error (uiout, bfun->errcode, conf->format); | |
1182 | ||
1183 | continue; | |
1184 | } | |
1185 | ||
8710b709 MM |
1186 | if ((flags & RECORD_PRINT_INDENT_CALLS) != 0) |
1187 | { | |
1188 | int level = bfun->level + btinfo->level, i; | |
1189 | ||
1190 | for (i = 0; i < level; ++i) | |
112e8700 | 1191 | uiout->text (" "); |
8710b709 MM |
1192 | } |
1193 | ||
1194 | if (sym != NULL) | |
987012b8 | 1195 | uiout->field_string ("function", sym->print_name (), |
e43b10e1 | 1196 | function_name_style.style ()); |
8710b709 | 1197 | else if (msym != NULL) |
c9d95fa3 | 1198 | uiout->field_string ("function", msym->print_name (), |
e43b10e1 | 1199 | function_name_style.style ()); |
112e8700 | 1200 | else if (!uiout->is_mi_like_p ()) |
cbe56571 | 1201 | uiout->field_string ("function", "??", |
e43b10e1 | 1202 | function_name_style.style ()); |
8710b709 | 1203 | |
1e038f67 | 1204 | if ((flags & RECORD_PRINT_INSN_RANGE) != 0) |
afedecd3 | 1205 | { |
112e8700 | 1206 | uiout->text (_("\tinst ")); |
23a7fe75 | 1207 | btrace_call_history_insn_range (uiout, bfun); |
afedecd3 MM |
1208 | } |
1209 | ||
1e038f67 | 1210 | if ((flags & RECORD_PRINT_SRC_LINE) != 0) |
afedecd3 | 1211 | { |
112e8700 | 1212 | uiout->text (_("\tat ")); |
23a7fe75 | 1213 | btrace_call_history_src_line (uiout, bfun); |
afedecd3 MM |
1214 | } |
1215 | ||
112e8700 | 1216 | uiout->text ("\n"); |
afedecd3 MM |
1217 | } |
1218 | } | |
1219 | ||
f6ac5f3d | 1220 | /* The call_history method of target record-btrace. */ |
afedecd3 | 1221 | |
f6ac5f3d PA |
1222 | void |
1223 | record_btrace_target::call_history (int size, record_print_flags flags) | |
afedecd3 MM |
1224 | { |
1225 | struct btrace_thread_info *btinfo; | |
23a7fe75 MM |
1226 | struct btrace_call_history *history; |
1227 | struct btrace_call_iterator begin, end; | |
afedecd3 | 1228 | struct ui_out *uiout; |
23a7fe75 | 1229 | unsigned int context, covered; |
afedecd3 MM |
1230 | |
1231 | uiout = current_uiout; | |
2e783024 | 1232 | ui_out_emit_tuple tuple_emitter (uiout, "insn history"); |
afedecd3 | 1233 | context = abs (size); |
afedecd3 MM |
1234 | if (context == 0) |
1235 | error (_("Bad record function-call-history-size.")); | |
1236 | ||
23a7fe75 MM |
1237 | btinfo = require_btrace (); |
1238 | history = btinfo->call_history; | |
1239 | if (history == NULL) | |
afedecd3 | 1240 | { |
07bbe694 | 1241 | struct btrace_insn_iterator *replay; |
afedecd3 | 1242 | |
0cb7c7b0 | 1243 | DEBUG ("call-history (0x%x): %d", (int) flags, size); |
afedecd3 | 1244 | |
07bbe694 MM |
1245 | /* If we're replaying, we start at the replay position. Otherwise, we |
1246 | start at the tail of the trace. */ | |
1247 | replay = btinfo->replay; | |
1248 | if (replay != NULL) | |
1249 | { | |
07bbe694 | 1250 | begin.btinfo = btinfo; |
a0f1b963 | 1251 | begin.index = replay->call_index; |
07bbe694 MM |
1252 | } |
1253 | else | |
1254 | btrace_call_end (&begin, btinfo); | |
1255 | ||
1256 | /* We start from here and expand in the requested direction. Then we | |
1257 | expand in the other direction, as well, to fill up any remaining | |
1258 | context. */ | |
1259 | end = begin; | |
1260 | if (size < 0) | |
1261 | { | |
1262 | /* We want the current position covered, as well. */ | |
1263 | covered = btrace_call_next (&end, 1); | |
1264 | covered += btrace_call_prev (&begin, context - covered); | |
1265 | covered += btrace_call_next (&end, context - covered); | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | covered = btrace_call_next (&end, context); | |
1270 | covered += btrace_call_prev (&begin, context- covered); | |
1271 | } | |
afedecd3 MM |
1272 | } |
1273 | else | |
1274 | { | |
23a7fe75 MM |
1275 | begin = history->begin; |
1276 | end = history->end; | |
afedecd3 | 1277 | |
0cb7c7b0 | 1278 | DEBUG ("call-history (0x%x): %d, prev: [%u; %u)", (int) flags, size, |
23a7fe75 | 1279 | btrace_call_number (&begin), btrace_call_number (&end)); |
afedecd3 | 1280 | |
23a7fe75 MM |
1281 | if (size < 0) |
1282 | { | |
1283 | end = begin; | |
1284 | covered = btrace_call_prev (&begin, context); | |
1285 | } | |
1286 | else | |
1287 | { | |
1288 | begin = end; | |
1289 | covered = btrace_call_next (&end, context); | |
1290 | } | |
afedecd3 MM |
1291 | } |
1292 | ||
23a7fe75 | 1293 | if (covered > 0) |
8710b709 | 1294 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 MM |
1295 | else |
1296 | { | |
1297 | if (size < 0) | |
1298 | printf_unfiltered (_("At the start of the branch trace record.\n")); | |
1299 | else | |
1300 | printf_unfiltered (_("At the end of the branch trace record.\n")); | |
1301 | } | |
afedecd3 | 1302 | |
23a7fe75 | 1303 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1304 | } |
1305 | ||
f6ac5f3d | 1306 | /* The call_history_range method of target record-btrace. */ |
afedecd3 | 1307 | |
f6ac5f3d PA |
1308 | void |
1309 | record_btrace_target::call_history_range (ULONGEST from, ULONGEST to, | |
1310 | record_print_flags flags) | |
afedecd3 MM |
1311 | { |
1312 | struct btrace_thread_info *btinfo; | |
23a7fe75 | 1313 | struct btrace_call_iterator begin, end; |
afedecd3 | 1314 | struct ui_out *uiout; |
23a7fe75 MM |
1315 | unsigned int low, high; |
1316 | int found; | |
afedecd3 MM |
1317 | |
1318 | uiout = current_uiout; | |
2e783024 | 1319 | ui_out_emit_tuple tuple_emitter (uiout, "func history"); |
23a7fe75 MM |
1320 | low = from; |
1321 | high = to; | |
afedecd3 | 1322 | |
0cb7c7b0 | 1323 | DEBUG ("call-history (0x%x): [%u; %u)", (int) flags, low, high); |
afedecd3 MM |
1324 | |
1325 | /* Check for wrap-arounds. */ | |
23a7fe75 | 1326 | if (low != from || high != to) |
afedecd3 MM |
1327 | error (_("Bad range.")); |
1328 | ||
0688d04e | 1329 | if (high < low) |
afedecd3 MM |
1330 | error (_("Bad range.")); |
1331 | ||
23a7fe75 | 1332 | btinfo = require_btrace (); |
afedecd3 | 1333 | |
23a7fe75 MM |
1334 | found = btrace_find_call_by_number (&begin, btinfo, low); |
1335 | if (found == 0) | |
1336 | error (_("Range out of bounds.")); | |
afedecd3 | 1337 | |
23a7fe75 MM |
1338 | found = btrace_find_call_by_number (&end, btinfo, high); |
1339 | if (found == 0) | |
0688d04e MM |
1340 | { |
1341 | /* Silently truncate the range. */ | |
1342 | btrace_call_end (&end, btinfo); | |
1343 | } | |
1344 | else | |
1345 | { | |
1346 | /* We want both begin and end to be inclusive. */ | |
1347 | btrace_call_next (&end, 1); | |
1348 | } | |
afedecd3 | 1349 | |
8710b709 | 1350 | btrace_call_history (uiout, btinfo, &begin, &end, flags); |
23a7fe75 | 1351 | btrace_set_call_history (btinfo, &begin, &end); |
afedecd3 MM |
1352 | } |
1353 | ||
f6ac5f3d | 1354 | /* The call_history_from method of target record-btrace. */ |
afedecd3 | 1355 | |
f6ac5f3d PA |
1356 | void |
1357 | record_btrace_target::call_history_from (ULONGEST from, int size, | |
1358 | record_print_flags flags) | |
afedecd3 MM |
1359 | { |
1360 | ULONGEST begin, end, context; | |
1361 | ||
1362 | context = abs (size); | |
0688d04e MM |
1363 | if (context == 0) |
1364 | error (_("Bad record function-call-history-size.")); | |
afedecd3 MM |
1365 | |
1366 | if (size < 0) | |
1367 | { | |
1368 | end = from; | |
1369 | ||
1370 | if (from < context) | |
1371 | begin = 0; | |
1372 | else | |
0688d04e | 1373 | begin = from - context + 1; |
afedecd3 MM |
1374 | } |
1375 | else | |
1376 | { | |
1377 | begin = from; | |
0688d04e | 1378 | end = from + context - 1; |
afedecd3 MM |
1379 | |
1380 | /* Check for wrap-around. */ | |
1381 | if (end < begin) | |
1382 | end = ULONGEST_MAX; | |
1383 | } | |
1384 | ||
f6ac5f3d | 1385 | call_history_range ( begin, end, flags); |
afedecd3 MM |
1386 | } |
1387 | ||
f6ac5f3d | 1388 | /* The record_method method of target record-btrace. */ |
b158a20f | 1389 | |
f6ac5f3d PA |
1390 | enum record_method |
1391 | record_btrace_target::record_method (ptid_t ptid) | |
b158a20f | 1392 | { |
5b6d1e4f PA |
1393 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
1394 | thread_info *const tp = find_thread_ptid (proc_target, ptid); | |
b158a20f TW |
1395 | |
1396 | if (tp == NULL) | |
1397 | error (_("No thread.")); | |
1398 | ||
1399 | if (tp->btrace.target == NULL) | |
1400 | return RECORD_METHOD_NONE; | |
1401 | ||
1402 | return RECORD_METHOD_BTRACE; | |
1403 | } | |
1404 | ||
f6ac5f3d | 1405 | /* The record_is_replaying method of target record-btrace. */ |
07bbe694 | 1406 | |
57810aa7 | 1407 | bool |
f6ac5f3d | 1408 | record_btrace_target::record_is_replaying (ptid_t ptid) |
07bbe694 | 1409 | { |
5b6d1e4f PA |
1410 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
1411 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 | 1412 | if (btrace_is_replaying (tp)) |
57810aa7 | 1413 | return true; |
07bbe694 | 1414 | |
57810aa7 | 1415 | return false; |
07bbe694 MM |
1416 | } |
1417 | ||
f6ac5f3d | 1418 | /* The record_will_replay method of target record-btrace. */ |
7ff27e9b | 1419 | |
57810aa7 | 1420 | bool |
f6ac5f3d | 1421 | record_btrace_target::record_will_replay (ptid_t ptid, int dir) |
7ff27e9b | 1422 | { |
f6ac5f3d | 1423 | return dir == EXEC_REVERSE || record_is_replaying (ptid); |
7ff27e9b MM |
1424 | } |
1425 | ||
f6ac5f3d | 1426 | /* The xfer_partial method of target record-btrace. */ |
633785ff | 1427 | |
f6ac5f3d PA |
1428 | enum target_xfer_status |
1429 | record_btrace_target::xfer_partial (enum target_object object, | |
1430 | const char *annex, gdb_byte *readbuf, | |
1431 | const gdb_byte *writebuf, ULONGEST offset, | |
1432 | ULONGEST len, ULONGEST *xfered_len) | |
633785ff | 1433 | { |
633785ff | 1434 | /* Filter out requests that don't make sense during replay. */ |
67b5c0c1 | 1435 | if (replay_memory_access == replay_memory_access_read_only |
aef92902 | 1436 | && !record_btrace_generating_corefile |
f6ac5f3d | 1437 | && record_is_replaying (inferior_ptid)) |
633785ff MM |
1438 | { |
1439 | switch (object) | |
1440 | { | |
1441 | case TARGET_OBJECT_MEMORY: | |
1442 | { | |
1443 | struct target_section *section; | |
1444 | ||
1445 | /* We do not allow writing memory in general. */ | |
1446 | if (writebuf != NULL) | |
9b409511 YQ |
1447 | { |
1448 | *xfered_len = len; | |
bc113b4e | 1449 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1450 | } |
633785ff MM |
1451 | |
1452 | /* We allow reading readonly memory. */ | |
f6ac5f3d | 1453 | section = target_section_by_addr (this, offset); |
633785ff MM |
1454 | if (section != NULL) |
1455 | { | |
1456 | /* Check if the section we found is readonly. */ | |
fd361982 | 1457 | if ((bfd_section_flags (section->the_bfd_section) |
633785ff MM |
1458 | & SEC_READONLY) != 0) |
1459 | { | |
1460 | /* Truncate the request to fit into this section. */ | |
325fac50 | 1461 | len = std::min (len, section->endaddr - offset); |
633785ff MM |
1462 | break; |
1463 | } | |
1464 | } | |
1465 | ||
9b409511 | 1466 | *xfered_len = len; |
bc113b4e | 1467 | return TARGET_XFER_UNAVAILABLE; |
633785ff MM |
1468 | } |
1469 | } | |
1470 | } | |
1471 | ||
1472 | /* Forward the request. */ | |
b6a8c27b PA |
1473 | return this->beneath ()->xfer_partial (object, annex, readbuf, writebuf, |
1474 | offset, len, xfered_len); | |
633785ff MM |
1475 | } |
1476 | ||
f6ac5f3d | 1477 | /* The insert_breakpoint method of target record-btrace. */ |
633785ff | 1478 | |
f6ac5f3d PA |
1479 | int |
1480 | record_btrace_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1481 | struct bp_target_info *bp_tgt) | |
633785ff | 1482 | { |
67b5c0c1 MM |
1483 | const char *old; |
1484 | int ret; | |
633785ff MM |
1485 | |
1486 | /* Inserting breakpoints requires accessing memory. Allow it for the | |
1487 | duration of this function. */ | |
67b5c0c1 MM |
1488 | old = replay_memory_access; |
1489 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1490 | |
1491 | ret = 0; | |
a70b8144 | 1492 | try |
492d29ea | 1493 | { |
b6a8c27b | 1494 | ret = this->beneath ()->insert_breakpoint (gdbarch, bp_tgt); |
492d29ea | 1495 | } |
230d2906 | 1496 | catch (const gdb_exception &except) |
492d29ea | 1497 | { |
6c63c96a | 1498 | replay_memory_access = old; |
eedc3f4f | 1499 | throw; |
492d29ea | 1500 | } |
6c63c96a | 1501 | replay_memory_access = old; |
633785ff MM |
1502 | |
1503 | return ret; | |
1504 | } | |
1505 | ||
f6ac5f3d | 1506 | /* The remove_breakpoint method of target record-btrace. */ |
633785ff | 1507 | |
f6ac5f3d PA |
1508 | int |
1509 | record_btrace_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1510 | struct bp_target_info *bp_tgt, | |
1511 | enum remove_bp_reason reason) | |
633785ff | 1512 | { |
67b5c0c1 MM |
1513 | const char *old; |
1514 | int ret; | |
633785ff MM |
1515 | |
1516 | /* Removing breakpoints requires accessing memory. Allow it for the | |
1517 | duration of this function. */ | |
67b5c0c1 MM |
1518 | old = replay_memory_access; |
1519 | replay_memory_access = replay_memory_access_read_write; | |
633785ff MM |
1520 | |
1521 | ret = 0; | |
a70b8144 | 1522 | try |
492d29ea | 1523 | { |
b6a8c27b | 1524 | ret = this->beneath ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
492d29ea | 1525 | } |
230d2906 | 1526 | catch (const gdb_exception &except) |
492d29ea | 1527 | { |
6c63c96a | 1528 | replay_memory_access = old; |
eedc3f4f | 1529 | throw; |
492d29ea | 1530 | } |
6c63c96a | 1531 | replay_memory_access = old; |
633785ff MM |
1532 | |
1533 | return ret; | |
1534 | } | |
1535 | ||
f6ac5f3d | 1536 | /* The fetch_registers method of target record-btrace. */ |
1f3ef581 | 1537 | |
f6ac5f3d PA |
1538 | void |
1539 | record_btrace_target::fetch_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1540 | { |
1a476b6d MM |
1541 | btrace_insn_iterator *replay = nullptr; |
1542 | ||
1543 | /* Thread-db may ask for a thread's registers before GDB knows about the | |
1544 | thread. We forward the request to the target beneath in this | |
1545 | case. */ | |
5b6d1e4f | 1546 | thread_info *tp = find_thread_ptid (regcache->target (), regcache->ptid ()); |
1a476b6d MM |
1547 | if (tp != nullptr) |
1548 | replay = tp->btrace.replay; | |
1f3ef581 | 1549 | |
1a476b6d | 1550 | if (replay != nullptr && !record_btrace_generating_corefile) |
1f3ef581 MM |
1551 | { |
1552 | const struct btrace_insn *insn; | |
1553 | struct gdbarch *gdbarch; | |
1554 | int pcreg; | |
1555 | ||
ac7936df | 1556 | gdbarch = regcache->arch (); |
1f3ef581 MM |
1557 | pcreg = gdbarch_pc_regnum (gdbarch); |
1558 | if (pcreg < 0) | |
1559 | return; | |
1560 | ||
1561 | /* We can only provide the PC register. */ | |
1562 | if (regno >= 0 && regno != pcreg) | |
1563 | return; | |
1564 | ||
1565 | insn = btrace_insn_get (replay); | |
1566 | gdb_assert (insn != NULL); | |
1567 | ||
73e1c03f | 1568 | regcache->raw_supply (regno, &insn->pc); |
1f3ef581 MM |
1569 | } |
1570 | else | |
b6a8c27b | 1571 | this->beneath ()->fetch_registers (regcache, regno); |
1f3ef581 MM |
1572 | } |
1573 | ||
f6ac5f3d | 1574 | /* The store_registers method of target record-btrace. */ |
1f3ef581 | 1575 | |
f6ac5f3d PA |
1576 | void |
1577 | record_btrace_target::store_registers (struct regcache *regcache, int regno) | |
1f3ef581 | 1578 | { |
a52eab48 | 1579 | if (!record_btrace_generating_corefile |
222312d3 | 1580 | && record_is_replaying (regcache->ptid ())) |
4d10e986 | 1581 | error (_("Cannot write registers while replaying.")); |
1f3ef581 | 1582 | |
491144b5 | 1583 | gdb_assert (may_write_registers); |
1f3ef581 | 1584 | |
b6a8c27b | 1585 | this->beneath ()->store_registers (regcache, regno); |
1f3ef581 MM |
1586 | } |
1587 | ||
f6ac5f3d | 1588 | /* The prepare_to_store method of target record-btrace. */ |
1f3ef581 | 1589 | |
f6ac5f3d PA |
1590 | void |
1591 | record_btrace_target::prepare_to_store (struct regcache *regcache) | |
1f3ef581 | 1592 | { |
a52eab48 | 1593 | if (!record_btrace_generating_corefile |
222312d3 | 1594 | && record_is_replaying (regcache->ptid ())) |
1f3ef581 MM |
1595 | return; |
1596 | ||
b6a8c27b | 1597 | this->beneath ()->prepare_to_store (regcache); |
1f3ef581 MM |
1598 | } |
1599 | ||
0b722aec MM |
1600 | /* The branch trace frame cache. */ |
1601 | ||
1602 | struct btrace_frame_cache | |
1603 | { | |
1604 | /* The thread. */ | |
1605 | struct thread_info *tp; | |
1606 | ||
1607 | /* The frame info. */ | |
1608 | struct frame_info *frame; | |
1609 | ||
1610 | /* The branch trace function segment. */ | |
1611 | const struct btrace_function *bfun; | |
1612 | }; | |
1613 | ||
1614 | /* A struct btrace_frame_cache hash table indexed by NEXT. */ | |
1615 | ||
1616 | static htab_t bfcache; | |
1617 | ||
1618 | /* hash_f for htab_create_alloc of bfcache. */ | |
1619 | ||
1620 | static hashval_t | |
1621 | bfcache_hash (const void *arg) | |
1622 | { | |
19ba03f4 SM |
1623 | const struct btrace_frame_cache *cache |
1624 | = (const struct btrace_frame_cache *) arg; | |
0b722aec MM |
1625 | |
1626 | return htab_hash_pointer (cache->frame); | |
1627 | } | |
1628 | ||
1629 | /* eq_f for htab_create_alloc of bfcache. */ | |
1630 | ||
1631 | static int | |
1632 | bfcache_eq (const void *arg1, const void *arg2) | |
1633 | { | |
19ba03f4 SM |
1634 | const struct btrace_frame_cache *cache1 |
1635 | = (const struct btrace_frame_cache *) arg1; | |
1636 | const struct btrace_frame_cache *cache2 | |
1637 | = (const struct btrace_frame_cache *) arg2; | |
0b722aec MM |
1638 | |
1639 | return cache1->frame == cache2->frame; | |
1640 | } | |
1641 | ||
1642 | /* Create a new btrace frame cache. */ | |
1643 | ||
1644 | static struct btrace_frame_cache * | |
1645 | bfcache_new (struct frame_info *frame) | |
1646 | { | |
1647 | struct btrace_frame_cache *cache; | |
1648 | void **slot; | |
1649 | ||
1650 | cache = FRAME_OBSTACK_ZALLOC (struct btrace_frame_cache); | |
1651 | cache->frame = frame; | |
1652 | ||
1653 | slot = htab_find_slot (bfcache, cache, INSERT); | |
1654 | gdb_assert (*slot == NULL); | |
1655 | *slot = cache; | |
1656 | ||
1657 | return cache; | |
1658 | } | |
1659 | ||
1660 | /* Extract the branch trace function from a branch trace frame. */ | |
1661 | ||
1662 | static const struct btrace_function * | |
1663 | btrace_get_frame_function (struct frame_info *frame) | |
1664 | { | |
1665 | const struct btrace_frame_cache *cache; | |
0b722aec MM |
1666 | struct btrace_frame_cache pattern; |
1667 | void **slot; | |
1668 | ||
1669 | pattern.frame = frame; | |
1670 | ||
1671 | slot = htab_find_slot (bfcache, &pattern, NO_INSERT); | |
1672 | if (slot == NULL) | |
1673 | return NULL; | |
1674 | ||
19ba03f4 | 1675 | cache = (const struct btrace_frame_cache *) *slot; |
0b722aec MM |
1676 | return cache->bfun; |
1677 | } | |
1678 | ||
cecac1ab MM |
1679 | /* Implement stop_reason method for record_btrace_frame_unwind. */ |
1680 | ||
1681 | static enum unwind_stop_reason | |
1682 | record_btrace_frame_unwind_stop_reason (struct frame_info *this_frame, | |
1683 | void **this_cache) | |
1684 | { | |
0b722aec MM |
1685 | const struct btrace_frame_cache *cache; |
1686 | const struct btrace_function *bfun; | |
1687 | ||
19ba03f4 | 1688 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1689 | bfun = cache->bfun; |
1690 | gdb_assert (bfun != NULL); | |
1691 | ||
42bfe59e | 1692 | if (bfun->up == 0) |
0b722aec MM |
1693 | return UNWIND_UNAVAILABLE; |
1694 | ||
1695 | return UNWIND_NO_REASON; | |
cecac1ab MM |
1696 | } |
1697 | ||
1698 | /* Implement this_id method for record_btrace_frame_unwind. */ | |
1699 | ||
1700 | static void | |
1701 | record_btrace_frame_this_id (struct frame_info *this_frame, void **this_cache, | |
1702 | struct frame_id *this_id) | |
1703 | { | |
0b722aec MM |
1704 | const struct btrace_frame_cache *cache; |
1705 | const struct btrace_function *bfun; | |
4aeb0dfc | 1706 | struct btrace_call_iterator it; |
0b722aec MM |
1707 | CORE_ADDR code, special; |
1708 | ||
19ba03f4 | 1709 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1710 | |
1711 | bfun = cache->bfun; | |
1712 | gdb_assert (bfun != NULL); | |
1713 | ||
4aeb0dfc TW |
1714 | while (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->prev) != 0) |
1715 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1716 | |
1717 | code = get_frame_func (this_frame); | |
1718 | special = bfun->number; | |
1719 | ||
1720 | *this_id = frame_id_build_unavailable_stack_special (code, special); | |
1721 | ||
1722 | DEBUG ("[frame] %s id: (!stack, pc=%s, special=%s)", | |
1723 | btrace_get_bfun_name (cache->bfun), | |
1724 | core_addr_to_string_nz (this_id->code_addr), | |
1725 | core_addr_to_string_nz (this_id->special_addr)); | |
cecac1ab MM |
1726 | } |
1727 | ||
1728 | /* Implement prev_register method for record_btrace_frame_unwind. */ | |
1729 | ||
1730 | static struct value * | |
1731 | record_btrace_frame_prev_register (struct frame_info *this_frame, | |
1732 | void **this_cache, | |
1733 | int regnum) | |
1734 | { | |
0b722aec MM |
1735 | const struct btrace_frame_cache *cache; |
1736 | const struct btrace_function *bfun, *caller; | |
42bfe59e | 1737 | struct btrace_call_iterator it; |
0b722aec MM |
1738 | struct gdbarch *gdbarch; |
1739 | CORE_ADDR pc; | |
1740 | int pcreg; | |
1741 | ||
1742 | gdbarch = get_frame_arch (this_frame); | |
1743 | pcreg = gdbarch_pc_regnum (gdbarch); | |
1744 | if (pcreg < 0 || regnum != pcreg) | |
1745 | throw_error (NOT_AVAILABLE_ERROR, | |
1746 | _("Registers are not available in btrace record history")); | |
1747 | ||
19ba03f4 | 1748 | cache = (const struct btrace_frame_cache *) *this_cache; |
0b722aec MM |
1749 | bfun = cache->bfun; |
1750 | gdb_assert (bfun != NULL); | |
1751 | ||
42bfe59e | 1752 | if (btrace_find_call_by_number (&it, &cache->tp->btrace, bfun->up) == 0) |
0b722aec MM |
1753 | throw_error (NOT_AVAILABLE_ERROR, |
1754 | _("No caller in btrace record history")); | |
1755 | ||
42bfe59e TW |
1756 | caller = btrace_call_get (&it); |
1757 | ||
0b722aec | 1758 | if ((bfun->flags & BFUN_UP_LINKS_TO_RET) != 0) |
0860c437 | 1759 | pc = caller->insn.front ().pc; |
0b722aec MM |
1760 | else |
1761 | { | |
0860c437 | 1762 | pc = caller->insn.back ().pc; |
0b722aec MM |
1763 | pc += gdb_insn_length (gdbarch, pc); |
1764 | } | |
1765 | ||
1766 | DEBUG ("[frame] unwound PC in %s on level %d: %s", | |
1767 | btrace_get_bfun_name (bfun), bfun->level, | |
1768 | core_addr_to_string_nz (pc)); | |
1769 | ||
1770 | return frame_unwind_got_address (this_frame, regnum, pc); | |
cecac1ab MM |
1771 | } |
1772 | ||
1773 | /* Implement sniffer method for record_btrace_frame_unwind. */ | |
1774 | ||
1775 | static int | |
1776 | record_btrace_frame_sniffer (const struct frame_unwind *self, | |
1777 | struct frame_info *this_frame, | |
1778 | void **this_cache) | |
1779 | { | |
0b722aec MM |
1780 | const struct btrace_function *bfun; |
1781 | struct btrace_frame_cache *cache; | |
cecac1ab | 1782 | struct thread_info *tp; |
0b722aec | 1783 | struct frame_info *next; |
cecac1ab MM |
1784 | |
1785 | /* THIS_FRAME does not contain a reference to its thread. */ | |
00431a78 | 1786 | tp = inferior_thread (); |
cecac1ab | 1787 | |
0b722aec MM |
1788 | bfun = NULL; |
1789 | next = get_next_frame (this_frame); | |
1790 | if (next == NULL) | |
1791 | { | |
1792 | const struct btrace_insn_iterator *replay; | |
1793 | ||
1794 | replay = tp->btrace.replay; | |
1795 | if (replay != NULL) | |
08c3f6d2 | 1796 | bfun = &replay->btinfo->functions[replay->call_index]; |
0b722aec MM |
1797 | } |
1798 | else | |
1799 | { | |
1800 | const struct btrace_function *callee; | |
42bfe59e | 1801 | struct btrace_call_iterator it; |
0b722aec MM |
1802 | |
1803 | callee = btrace_get_frame_function (next); | |
42bfe59e TW |
1804 | if (callee == NULL || (callee->flags & BFUN_UP_LINKS_TO_TAILCALL) != 0) |
1805 | return 0; | |
1806 | ||
1807 | if (btrace_find_call_by_number (&it, &tp->btrace, callee->up) == 0) | |
1808 | return 0; | |
1809 | ||
1810 | bfun = btrace_call_get (&it); | |
0b722aec MM |
1811 | } |
1812 | ||
1813 | if (bfun == NULL) | |
1814 | return 0; | |
1815 | ||
1816 | DEBUG ("[frame] sniffed frame for %s on level %d", | |
1817 | btrace_get_bfun_name (bfun), bfun->level); | |
1818 | ||
1819 | /* This is our frame. Initialize the frame cache. */ | |
1820 | cache = bfcache_new (this_frame); | |
1821 | cache->tp = tp; | |
1822 | cache->bfun = bfun; | |
1823 | ||
1824 | *this_cache = cache; | |
1825 | return 1; | |
1826 | } | |
1827 | ||
1828 | /* Implement sniffer method for record_btrace_tailcall_frame_unwind. */ | |
1829 | ||
1830 | static int | |
1831 | record_btrace_tailcall_frame_sniffer (const struct frame_unwind *self, | |
1832 | struct frame_info *this_frame, | |
1833 | void **this_cache) | |
1834 | { | |
1835 | const struct btrace_function *bfun, *callee; | |
1836 | struct btrace_frame_cache *cache; | |
42bfe59e | 1837 | struct btrace_call_iterator it; |
0b722aec | 1838 | struct frame_info *next; |
42bfe59e | 1839 | struct thread_info *tinfo; |
0b722aec MM |
1840 | |
1841 | next = get_next_frame (this_frame); | |
1842 | if (next == NULL) | |
1843 | return 0; | |
1844 | ||
1845 | callee = btrace_get_frame_function (next); | |
1846 | if (callee == NULL) | |
1847 | return 0; | |
1848 | ||
1849 | if ((callee->flags & BFUN_UP_LINKS_TO_TAILCALL) == 0) | |
1850 | return 0; | |
1851 | ||
00431a78 | 1852 | tinfo = inferior_thread (); |
42bfe59e | 1853 | if (btrace_find_call_by_number (&it, &tinfo->btrace, callee->up) == 0) |
0b722aec MM |
1854 | return 0; |
1855 | ||
42bfe59e TW |
1856 | bfun = btrace_call_get (&it); |
1857 | ||
0b722aec MM |
1858 | DEBUG ("[frame] sniffed tailcall frame for %s on level %d", |
1859 | btrace_get_bfun_name (bfun), bfun->level); | |
1860 | ||
1861 | /* This is our frame. Initialize the frame cache. */ | |
1862 | cache = bfcache_new (this_frame); | |
42bfe59e | 1863 | cache->tp = tinfo; |
0b722aec MM |
1864 | cache->bfun = bfun; |
1865 | ||
1866 | *this_cache = cache; | |
1867 | return 1; | |
1868 | } | |
1869 | ||
1870 | static void | |
1871 | record_btrace_frame_dealloc_cache (struct frame_info *self, void *this_cache) | |
1872 | { | |
1873 | struct btrace_frame_cache *cache; | |
1874 | void **slot; | |
1875 | ||
19ba03f4 | 1876 | cache = (struct btrace_frame_cache *) this_cache; |
0b722aec MM |
1877 | |
1878 | slot = htab_find_slot (bfcache, cache, NO_INSERT); | |
1879 | gdb_assert (slot != NULL); | |
1880 | ||
1881 | htab_remove_elt (bfcache, cache); | |
cecac1ab MM |
1882 | } |
1883 | ||
1884 | /* btrace recording does not store previous memory content, neither the stack | |
30baf67b | 1885 | frames content. Any unwinding would return erroneous results as the stack |
cecac1ab MM |
1886 | contents no longer matches the changed PC value restored from history. |
1887 | Therefore this unwinder reports any possibly unwound registers as | |
1888 | <unavailable>. */ | |
1889 | ||
0b722aec | 1890 | const struct frame_unwind record_btrace_frame_unwind = |
cecac1ab MM |
1891 | { |
1892 | NORMAL_FRAME, | |
1893 | record_btrace_frame_unwind_stop_reason, | |
1894 | record_btrace_frame_this_id, | |
1895 | record_btrace_frame_prev_register, | |
1896 | NULL, | |
0b722aec MM |
1897 | record_btrace_frame_sniffer, |
1898 | record_btrace_frame_dealloc_cache | |
1899 | }; | |
1900 | ||
1901 | const struct frame_unwind record_btrace_tailcall_frame_unwind = | |
1902 | { | |
1903 | TAILCALL_FRAME, | |
1904 | record_btrace_frame_unwind_stop_reason, | |
1905 | record_btrace_frame_this_id, | |
1906 | record_btrace_frame_prev_register, | |
1907 | NULL, | |
1908 | record_btrace_tailcall_frame_sniffer, | |
1909 | record_btrace_frame_dealloc_cache | |
cecac1ab | 1910 | }; |
b2f4cfde | 1911 | |
f6ac5f3d | 1912 | /* Implement the get_unwinder method. */ |
ac01945b | 1913 | |
f6ac5f3d PA |
1914 | const struct frame_unwind * |
1915 | record_btrace_target::get_unwinder () | |
ac01945b TT |
1916 | { |
1917 | return &record_btrace_frame_unwind; | |
1918 | } | |
1919 | ||
f6ac5f3d | 1920 | /* Implement the get_tailcall_unwinder method. */ |
ac01945b | 1921 | |
f6ac5f3d PA |
1922 | const struct frame_unwind * |
1923 | record_btrace_target::get_tailcall_unwinder () | |
ac01945b TT |
1924 | { |
1925 | return &record_btrace_tailcall_frame_unwind; | |
1926 | } | |
1927 | ||
987e68b1 MM |
1928 | /* Return a human-readable string for FLAG. */ |
1929 | ||
1930 | static const char * | |
04902b09 | 1931 | btrace_thread_flag_to_str (btrace_thread_flags flag) |
987e68b1 MM |
1932 | { |
1933 | switch (flag) | |
1934 | { | |
1935 | case BTHR_STEP: | |
1936 | return "step"; | |
1937 | ||
1938 | case BTHR_RSTEP: | |
1939 | return "reverse-step"; | |
1940 | ||
1941 | case BTHR_CONT: | |
1942 | return "cont"; | |
1943 | ||
1944 | case BTHR_RCONT: | |
1945 | return "reverse-cont"; | |
1946 | ||
1947 | case BTHR_STOP: | |
1948 | return "stop"; | |
1949 | } | |
1950 | ||
1951 | return "<invalid>"; | |
1952 | } | |
1953 | ||
52834460 MM |
1954 | /* Indicate that TP should be resumed according to FLAG. */ |
1955 | ||
1956 | static void | |
1957 | record_btrace_resume_thread (struct thread_info *tp, | |
1958 | enum btrace_thread_flag flag) | |
1959 | { | |
1960 | struct btrace_thread_info *btinfo; | |
1961 | ||
43792cf0 | 1962 | DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp), |
a068643d TT |
1963 | target_pid_to_str (tp->ptid).c_str (), flag, |
1964 | btrace_thread_flag_to_str (flag)); | |
52834460 MM |
1965 | |
1966 | btinfo = &tp->btrace; | |
1967 | ||
52834460 | 1968 | /* Fetch the latest branch trace. */ |
4a4495d6 | 1969 | btrace_fetch (tp, record_btrace_get_cpu ()); |
52834460 | 1970 | |
0ca912df MM |
1971 | /* A resume request overwrites a preceding resume or stop request. */ |
1972 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 MM |
1973 | btinfo->flags |= flag; |
1974 | } | |
1975 | ||
ec71cc2f MM |
1976 | /* Get the current frame for TP. */ |
1977 | ||
79b8d3b0 TT |
1978 | static struct frame_id |
1979 | get_thread_current_frame_id (struct thread_info *tp) | |
ec71cc2f | 1980 | { |
79b8d3b0 | 1981 | struct frame_id id; |
719546c4 | 1982 | bool executing; |
ec71cc2f | 1983 | |
00431a78 PA |
1984 | /* Set current thread, which is implicitly used by |
1985 | get_current_frame. */ | |
1986 | scoped_restore_current_thread restore_thread; | |
1987 | ||
1988 | switch_to_thread (tp); | |
ec71cc2f | 1989 | |
5b6d1e4f PA |
1990 | process_stratum_target *proc_target = tp->inf->process_target (); |
1991 | ||
ec71cc2f MM |
1992 | /* Clear the executing flag to allow changes to the current frame. |
1993 | We are not actually running, yet. We just started a reverse execution | |
1994 | command or a record goto command. | |
1995 | For the latter, EXECUTING is false and this has no effect. | |
f6ac5f3d | 1996 | For the former, EXECUTING is true and we're in wait, about to |
ec71cc2f | 1997 | move the thread. Since we need to recompute the stack, we temporarily |
85102364 | 1998 | set EXECUTING to false. */ |
00431a78 | 1999 | executing = tp->executing; |
5b6d1e4f | 2000 | set_executing (proc_target, inferior_ptid, false); |
ec71cc2f | 2001 | |
79b8d3b0 | 2002 | id = null_frame_id; |
a70b8144 | 2003 | try |
ec71cc2f | 2004 | { |
79b8d3b0 | 2005 | id = get_frame_id (get_current_frame ()); |
ec71cc2f | 2006 | } |
230d2906 | 2007 | catch (const gdb_exception &except) |
ec71cc2f MM |
2008 | { |
2009 | /* Restore the previous execution state. */ | |
5b6d1e4f | 2010 | set_executing (proc_target, inferior_ptid, executing); |
ec71cc2f | 2011 | |
eedc3f4f | 2012 | throw; |
ec71cc2f | 2013 | } |
ec71cc2f MM |
2014 | |
2015 | /* Restore the previous execution state. */ | |
5b6d1e4f | 2016 | set_executing (proc_target, inferior_ptid, executing); |
ec71cc2f | 2017 | |
79b8d3b0 | 2018 | return id; |
ec71cc2f MM |
2019 | } |
2020 | ||
52834460 MM |
2021 | /* Start replaying a thread. */ |
2022 | ||
2023 | static struct btrace_insn_iterator * | |
2024 | record_btrace_start_replaying (struct thread_info *tp) | |
2025 | { | |
52834460 MM |
2026 | struct btrace_insn_iterator *replay; |
2027 | struct btrace_thread_info *btinfo; | |
52834460 MM |
2028 | |
2029 | btinfo = &tp->btrace; | |
2030 | replay = NULL; | |
2031 | ||
2032 | /* We can't start replaying without trace. */ | |
b54b03bd | 2033 | if (btinfo->functions.empty ()) |
52834460 MM |
2034 | return NULL; |
2035 | ||
52834460 MM |
2036 | /* GDB stores the current frame_id when stepping in order to detects steps |
2037 | into subroutines. | |
2038 | Since frames are computed differently when we're replaying, we need to | |
2039 | recompute those stored frames and fix them up so we can still detect | |
2040 | subroutines after we started replaying. */ | |
a70b8144 | 2041 | try |
52834460 | 2042 | { |
52834460 MM |
2043 | struct frame_id frame_id; |
2044 | int upd_step_frame_id, upd_step_stack_frame_id; | |
2045 | ||
2046 | /* The current frame without replaying - computed via normal unwind. */ | |
79b8d3b0 | 2047 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2048 | |
2049 | /* Check if we need to update any stepping-related frame id's. */ | |
2050 | upd_step_frame_id = frame_id_eq (frame_id, | |
2051 | tp->control.step_frame_id); | |
2052 | upd_step_stack_frame_id = frame_id_eq (frame_id, | |
2053 | tp->control.step_stack_frame_id); | |
2054 | ||
2055 | /* We start replaying at the end of the branch trace. This corresponds | |
2056 | to the current instruction. */ | |
8d749320 | 2057 | replay = XNEW (struct btrace_insn_iterator); |
52834460 MM |
2058 | btrace_insn_end (replay, btinfo); |
2059 | ||
31fd9caa MM |
2060 | /* Skip gaps at the end of the trace. */ |
2061 | while (btrace_insn_get (replay) == NULL) | |
2062 | { | |
2063 | unsigned int steps; | |
2064 | ||
2065 | steps = btrace_insn_prev (replay, 1); | |
2066 | if (steps == 0) | |
2067 | error (_("No trace.")); | |
2068 | } | |
2069 | ||
52834460 MM |
2070 | /* We're not replaying, yet. */ |
2071 | gdb_assert (btinfo->replay == NULL); | |
2072 | btinfo->replay = replay; | |
2073 | ||
2074 | /* Make sure we're not using any stale registers. */ | |
00431a78 | 2075 | registers_changed_thread (tp); |
52834460 MM |
2076 | |
2077 | /* The current frame with replaying - computed via btrace unwind. */ | |
79b8d3b0 | 2078 | frame_id = get_thread_current_frame_id (tp); |
52834460 MM |
2079 | |
2080 | /* Replace stepping related frames where necessary. */ | |
2081 | if (upd_step_frame_id) | |
2082 | tp->control.step_frame_id = frame_id; | |
2083 | if (upd_step_stack_frame_id) | |
2084 | tp->control.step_stack_frame_id = frame_id; | |
2085 | } | |
230d2906 | 2086 | catch (const gdb_exception &except) |
52834460 MM |
2087 | { |
2088 | xfree (btinfo->replay); | |
2089 | btinfo->replay = NULL; | |
2090 | ||
00431a78 | 2091 | registers_changed_thread (tp); |
52834460 | 2092 | |
eedc3f4f | 2093 | throw; |
52834460 MM |
2094 | } |
2095 | ||
2096 | return replay; | |
2097 | } | |
2098 | ||
2099 | /* Stop replaying a thread. */ | |
2100 | ||
2101 | static void | |
2102 | record_btrace_stop_replaying (struct thread_info *tp) | |
2103 | { | |
2104 | struct btrace_thread_info *btinfo; | |
2105 | ||
2106 | btinfo = &tp->btrace; | |
2107 | ||
2108 | xfree (btinfo->replay); | |
2109 | btinfo->replay = NULL; | |
2110 | ||
2111 | /* Make sure we're not leaving any stale registers. */ | |
00431a78 | 2112 | registers_changed_thread (tp); |
52834460 MM |
2113 | } |
2114 | ||
e3cfc1c7 MM |
2115 | /* Stop replaying TP if it is at the end of its execution history. */ |
2116 | ||
2117 | static void | |
2118 | record_btrace_stop_replaying_at_end (struct thread_info *tp) | |
2119 | { | |
2120 | struct btrace_insn_iterator *replay, end; | |
2121 | struct btrace_thread_info *btinfo; | |
2122 | ||
2123 | btinfo = &tp->btrace; | |
2124 | replay = btinfo->replay; | |
2125 | ||
2126 | if (replay == NULL) | |
2127 | return; | |
2128 | ||
2129 | btrace_insn_end (&end, btinfo); | |
2130 | ||
2131 | if (btrace_insn_cmp (replay, &end) == 0) | |
2132 | record_btrace_stop_replaying (tp); | |
2133 | } | |
2134 | ||
f6ac5f3d | 2135 | /* The resume method of target record-btrace. */ |
b2f4cfde | 2136 | |
f6ac5f3d PA |
2137 | void |
2138 | record_btrace_target::resume (ptid_t ptid, int step, enum gdb_signal signal) | |
b2f4cfde | 2139 | { |
d2939ba2 | 2140 | enum btrace_thread_flag flag, cflag; |
52834460 | 2141 | |
a068643d | 2142 | DEBUG ("resume %s: %s%s", target_pid_to_str (ptid).c_str (), |
f6ac5f3d | 2143 | ::execution_direction == EXEC_REVERSE ? "reverse-" : "", |
987e68b1 | 2144 | step ? "step" : "cont"); |
52834460 | 2145 | |
0ca912df MM |
2146 | /* Store the execution direction of the last resume. |
2147 | ||
f6ac5f3d | 2148 | If there is more than one resume call, we have to rely on infrun |
0ca912df | 2149 | to not change the execution direction in-between. */ |
f6ac5f3d | 2150 | record_btrace_resume_exec_dir = ::execution_direction; |
70ad5bff | 2151 | |
0ca912df | 2152 | /* As long as we're not replaying, just forward the request. |
52834460 | 2153 | |
0ca912df MM |
2154 | For non-stop targets this means that no thread is replaying. In order to |
2155 | make progress, we may need to explicitly move replaying threads to the end | |
2156 | of their execution history. */ | |
f6ac5f3d PA |
2157 | if ((::execution_direction != EXEC_REVERSE) |
2158 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2159 | { |
b6a8c27b | 2160 | this->beneath ()->resume (ptid, step, signal); |
04c4fe8c | 2161 | return; |
b2f4cfde MM |
2162 | } |
2163 | ||
52834460 | 2164 | /* Compute the btrace thread flag for the requested move. */ |
f6ac5f3d | 2165 | if (::execution_direction == EXEC_REVERSE) |
d2939ba2 MM |
2166 | { |
2167 | flag = step == 0 ? BTHR_RCONT : BTHR_RSTEP; | |
2168 | cflag = BTHR_RCONT; | |
2169 | } | |
52834460 | 2170 | else |
d2939ba2 MM |
2171 | { |
2172 | flag = step == 0 ? BTHR_CONT : BTHR_STEP; | |
2173 | cflag = BTHR_CONT; | |
2174 | } | |
52834460 | 2175 | |
52834460 | 2176 | /* We just indicate the resume intent here. The actual stepping happens in |
d2939ba2 MM |
2177 | record_btrace_wait below. |
2178 | ||
2179 | For all-stop targets, we only step INFERIOR_PTID and continue others. */ | |
5b6d1e4f PA |
2180 | |
2181 | process_stratum_target *proc_target = current_inferior ()->process_target (); | |
2182 | ||
d2939ba2 MM |
2183 | if (!target_is_non_stop_p ()) |
2184 | { | |
26a57c92 | 2185 | gdb_assert (inferior_ptid.matches (ptid)); |
d2939ba2 | 2186 | |
5b6d1e4f | 2187 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) |
08036331 PA |
2188 | { |
2189 | if (tp->ptid.matches (inferior_ptid)) | |
2190 | record_btrace_resume_thread (tp, flag); | |
2191 | else | |
2192 | record_btrace_resume_thread (tp, cflag); | |
2193 | } | |
d2939ba2 MM |
2194 | } |
2195 | else | |
2196 | { | |
5b6d1e4f | 2197 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) |
08036331 | 2198 | record_btrace_resume_thread (tp, flag); |
d2939ba2 | 2199 | } |
70ad5bff MM |
2200 | |
2201 | /* Async support. */ | |
2202 | if (target_can_async_p ()) | |
2203 | { | |
6a3753b3 | 2204 | target_async (1); |
70ad5bff MM |
2205 | mark_async_event_handler (record_btrace_async_inferior_event_handler); |
2206 | } | |
52834460 MM |
2207 | } |
2208 | ||
f6ac5f3d | 2209 | /* The commit_resume method of target record-btrace. */ |
85ad3aaf | 2210 | |
f6ac5f3d PA |
2211 | void |
2212 | record_btrace_target::commit_resume () | |
85ad3aaf | 2213 | { |
f6ac5f3d PA |
2214 | if ((::execution_direction != EXEC_REVERSE) |
2215 | && !record_is_replaying (minus_one_ptid)) | |
b6a8c27b | 2216 | beneath ()->commit_resume (); |
85ad3aaf PA |
2217 | } |
2218 | ||
987e68b1 MM |
2219 | /* Cancel resuming TP. */ |
2220 | ||
2221 | static void | |
2222 | record_btrace_cancel_resume (struct thread_info *tp) | |
2223 | { | |
04902b09 | 2224 | btrace_thread_flags flags; |
987e68b1 MM |
2225 | |
2226 | flags = tp->btrace.flags & (BTHR_MOVE | BTHR_STOP); | |
2227 | if (flags == 0) | |
2228 | return; | |
2229 | ||
43792cf0 PA |
2230 | DEBUG ("cancel resume thread %s (%s): %x (%s)", |
2231 | print_thread_id (tp), | |
04902b09 | 2232 | target_pid_to_str (tp->ptid).c_str (), flags.raw (), |
987e68b1 MM |
2233 | btrace_thread_flag_to_str (flags)); |
2234 | ||
2235 | tp->btrace.flags &= ~(BTHR_MOVE | BTHR_STOP); | |
e3cfc1c7 | 2236 | record_btrace_stop_replaying_at_end (tp); |
52834460 MM |
2237 | } |
2238 | ||
2239 | /* Return a target_waitstatus indicating that we ran out of history. */ | |
2240 | ||
2241 | static struct target_waitstatus | |
2242 | btrace_step_no_history (void) | |
2243 | { | |
2244 | struct target_waitstatus status; | |
2245 | ||
2246 | status.kind = TARGET_WAITKIND_NO_HISTORY; | |
2247 | ||
2248 | return status; | |
2249 | } | |
2250 | ||
2251 | /* Return a target_waitstatus indicating that a step finished. */ | |
2252 | ||
2253 | static struct target_waitstatus | |
2254 | btrace_step_stopped (void) | |
2255 | { | |
2256 | struct target_waitstatus status; | |
2257 | ||
2258 | status.kind = TARGET_WAITKIND_STOPPED; | |
2259 | status.value.sig = GDB_SIGNAL_TRAP; | |
2260 | ||
2261 | return status; | |
2262 | } | |
2263 | ||
6e4879f0 MM |
2264 | /* Return a target_waitstatus indicating that a thread was stopped as |
2265 | requested. */ | |
2266 | ||
2267 | static struct target_waitstatus | |
2268 | btrace_step_stopped_on_request (void) | |
2269 | { | |
2270 | struct target_waitstatus status; | |
2271 | ||
2272 | status.kind = TARGET_WAITKIND_STOPPED; | |
2273 | status.value.sig = GDB_SIGNAL_0; | |
2274 | ||
2275 | return status; | |
2276 | } | |
2277 | ||
d825d248 MM |
2278 | /* Return a target_waitstatus indicating a spurious stop. */ |
2279 | ||
2280 | static struct target_waitstatus | |
2281 | btrace_step_spurious (void) | |
2282 | { | |
2283 | struct target_waitstatus status; | |
2284 | ||
2285 | status.kind = TARGET_WAITKIND_SPURIOUS; | |
2286 | ||
2287 | return status; | |
2288 | } | |
2289 | ||
e3cfc1c7 MM |
2290 | /* Return a target_waitstatus indicating that the thread was not resumed. */ |
2291 | ||
2292 | static struct target_waitstatus | |
2293 | btrace_step_no_resumed (void) | |
2294 | { | |
2295 | struct target_waitstatus status; | |
2296 | ||
2297 | status.kind = TARGET_WAITKIND_NO_RESUMED; | |
2298 | ||
2299 | return status; | |
2300 | } | |
2301 | ||
2302 | /* Return a target_waitstatus indicating that we should wait again. */ | |
2303 | ||
2304 | static struct target_waitstatus | |
2305 | btrace_step_again (void) | |
2306 | { | |
2307 | struct target_waitstatus status; | |
2308 | ||
2309 | status.kind = TARGET_WAITKIND_IGNORE; | |
2310 | ||
2311 | return status; | |
2312 | } | |
2313 | ||
52834460 MM |
2314 | /* Clear the record histories. */ |
2315 | ||
2316 | static void | |
2317 | record_btrace_clear_histories (struct btrace_thread_info *btinfo) | |
2318 | { | |
2319 | xfree (btinfo->insn_history); | |
2320 | xfree (btinfo->call_history); | |
2321 | ||
2322 | btinfo->insn_history = NULL; | |
2323 | btinfo->call_history = NULL; | |
2324 | } | |
2325 | ||
3c615f99 MM |
2326 | /* Check whether TP's current replay position is at a breakpoint. */ |
2327 | ||
2328 | static int | |
2329 | record_btrace_replay_at_breakpoint (struct thread_info *tp) | |
2330 | { | |
2331 | struct btrace_insn_iterator *replay; | |
2332 | struct btrace_thread_info *btinfo; | |
2333 | const struct btrace_insn *insn; | |
3c615f99 MM |
2334 | |
2335 | btinfo = &tp->btrace; | |
2336 | replay = btinfo->replay; | |
2337 | ||
2338 | if (replay == NULL) | |
2339 | return 0; | |
2340 | ||
2341 | insn = btrace_insn_get (replay); | |
2342 | if (insn == NULL) | |
2343 | return 0; | |
2344 | ||
00431a78 | 2345 | return record_check_stopped_by_breakpoint (tp->inf->aspace, insn->pc, |
3c615f99 MM |
2346 | &btinfo->stop_reason); |
2347 | } | |
2348 | ||
d825d248 | 2349 | /* Step one instruction in forward direction. */ |
52834460 MM |
2350 | |
2351 | static struct target_waitstatus | |
d825d248 | 2352 | record_btrace_single_step_forward (struct thread_info *tp) |
52834460 | 2353 | { |
b61ce85c | 2354 | struct btrace_insn_iterator *replay, end, start; |
52834460 | 2355 | struct btrace_thread_info *btinfo; |
52834460 | 2356 | |
d825d248 MM |
2357 | btinfo = &tp->btrace; |
2358 | replay = btinfo->replay; | |
2359 | ||
2360 | /* We're done if we're not replaying. */ | |
2361 | if (replay == NULL) | |
2362 | return btrace_step_no_history (); | |
2363 | ||
011c71b6 MM |
2364 | /* Check if we're stepping a breakpoint. */ |
2365 | if (record_btrace_replay_at_breakpoint (tp)) | |
2366 | return btrace_step_stopped (); | |
2367 | ||
b61ce85c MM |
2368 | /* Skip gaps during replay. If we end up at a gap (at the end of the trace), |
2369 | jump back to the instruction at which we started. */ | |
2370 | start = *replay; | |
d825d248 MM |
2371 | do |
2372 | { | |
2373 | unsigned int steps; | |
2374 | ||
e3cfc1c7 MM |
2375 | /* We will bail out here if we continue stepping after reaching the end |
2376 | of the execution history. */ | |
d825d248 MM |
2377 | steps = btrace_insn_next (replay, 1); |
2378 | if (steps == 0) | |
b61ce85c MM |
2379 | { |
2380 | *replay = start; | |
2381 | return btrace_step_no_history (); | |
2382 | } | |
d825d248 MM |
2383 | } |
2384 | while (btrace_insn_get (replay) == NULL); | |
2385 | ||
2386 | /* Determine the end of the instruction trace. */ | |
2387 | btrace_insn_end (&end, btinfo); | |
2388 | ||
e3cfc1c7 MM |
2389 | /* The execution trace contains (and ends with) the current instruction. |
2390 | This instruction has not been executed, yet, so the trace really ends | |
2391 | one instruction earlier. */ | |
d825d248 | 2392 | if (btrace_insn_cmp (replay, &end) == 0) |
e3cfc1c7 | 2393 | return btrace_step_no_history (); |
d825d248 MM |
2394 | |
2395 | return btrace_step_spurious (); | |
2396 | } | |
2397 | ||
2398 | /* Step one instruction in backward direction. */ | |
2399 | ||
2400 | static struct target_waitstatus | |
2401 | record_btrace_single_step_backward (struct thread_info *tp) | |
2402 | { | |
b61ce85c | 2403 | struct btrace_insn_iterator *replay, start; |
d825d248 | 2404 | struct btrace_thread_info *btinfo; |
e59fa00f | 2405 | |
52834460 MM |
2406 | btinfo = &tp->btrace; |
2407 | replay = btinfo->replay; | |
2408 | ||
d825d248 MM |
2409 | /* Start replaying if we're not already doing so. */ |
2410 | if (replay == NULL) | |
2411 | replay = record_btrace_start_replaying (tp); | |
2412 | ||
2413 | /* If we can't step any further, we reached the end of the history. | |
b61ce85c MM |
2414 | Skip gaps during replay. If we end up at a gap (at the beginning of |
2415 | the trace), jump back to the instruction at which we started. */ | |
2416 | start = *replay; | |
d825d248 MM |
2417 | do |
2418 | { | |
2419 | unsigned int steps; | |
2420 | ||
2421 | steps = btrace_insn_prev (replay, 1); | |
2422 | if (steps == 0) | |
b61ce85c MM |
2423 | { |
2424 | *replay = start; | |
2425 | return btrace_step_no_history (); | |
2426 | } | |
d825d248 MM |
2427 | } |
2428 | while (btrace_insn_get (replay) == NULL); | |
2429 | ||
011c71b6 MM |
2430 | /* Check if we're stepping a breakpoint. |
2431 | ||
2432 | For reverse-stepping, this check is after the step. There is logic in | |
2433 | infrun.c that handles reverse-stepping separately. See, for example, | |
2434 | proceed and adjust_pc_after_break. | |
2435 | ||
2436 | This code assumes that for reverse-stepping, PC points to the last | |
2437 | de-executed instruction, whereas for forward-stepping PC points to the | |
2438 | next to-be-executed instruction. */ | |
2439 | if (record_btrace_replay_at_breakpoint (tp)) | |
2440 | return btrace_step_stopped (); | |
2441 | ||
d825d248 MM |
2442 | return btrace_step_spurious (); |
2443 | } | |
2444 | ||
2445 | /* Step a single thread. */ | |
2446 | ||
2447 | static struct target_waitstatus | |
2448 | record_btrace_step_thread (struct thread_info *tp) | |
2449 | { | |
2450 | struct btrace_thread_info *btinfo; | |
2451 | struct target_waitstatus status; | |
04902b09 | 2452 | btrace_thread_flags flags; |
d825d248 MM |
2453 | |
2454 | btinfo = &tp->btrace; | |
2455 | ||
6e4879f0 MM |
2456 | flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP); |
2457 | btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP); | |
52834460 | 2458 | |
43792cf0 | 2459 | DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp), |
04902b09 | 2460 | target_pid_to_str (tp->ptid).c_str (), flags.raw (), |
987e68b1 | 2461 | btrace_thread_flag_to_str (flags)); |
52834460 | 2462 | |
6e4879f0 MM |
2463 | /* We can't step without an execution history. */ |
2464 | if ((flags & BTHR_MOVE) != 0 && btrace_is_empty (tp)) | |
2465 | return btrace_step_no_history (); | |
2466 | ||
52834460 MM |
2467 | switch (flags) |
2468 | { | |
2469 | default: | |
2470 | internal_error (__FILE__, __LINE__, _("invalid stepping type.")); | |
2471 | ||
6e4879f0 MM |
2472 | case BTHR_STOP: |
2473 | return btrace_step_stopped_on_request (); | |
2474 | ||
52834460 | 2475 | case BTHR_STEP: |
d825d248 MM |
2476 | status = record_btrace_single_step_forward (tp); |
2477 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2478 | break; |
52834460 MM |
2479 | |
2480 | return btrace_step_stopped (); | |
2481 | ||
2482 | case BTHR_RSTEP: | |
d825d248 MM |
2483 | status = record_btrace_single_step_backward (tp); |
2484 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
e3cfc1c7 | 2485 | break; |
52834460 MM |
2486 | |
2487 | return btrace_step_stopped (); | |
2488 | ||
2489 | case BTHR_CONT: | |
e3cfc1c7 MM |
2490 | status = record_btrace_single_step_forward (tp); |
2491 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2492 | break; | |
52834460 | 2493 | |
e3cfc1c7 MM |
2494 | btinfo->flags |= flags; |
2495 | return btrace_step_again (); | |
52834460 MM |
2496 | |
2497 | case BTHR_RCONT: | |
e3cfc1c7 MM |
2498 | status = record_btrace_single_step_backward (tp); |
2499 | if (status.kind != TARGET_WAITKIND_SPURIOUS) | |
2500 | break; | |
52834460 | 2501 | |
e3cfc1c7 MM |
2502 | btinfo->flags |= flags; |
2503 | return btrace_step_again (); | |
2504 | } | |
d825d248 | 2505 | |
f6ac5f3d | 2506 | /* We keep threads moving at the end of their execution history. The wait |
e3cfc1c7 MM |
2507 | method will stop the thread for whom the event is reported. */ |
2508 | if (status.kind == TARGET_WAITKIND_NO_HISTORY) | |
2509 | btinfo->flags |= flags; | |
52834460 | 2510 | |
e3cfc1c7 | 2511 | return status; |
b2f4cfde MM |
2512 | } |
2513 | ||
a6b5be76 MM |
2514 | /* Announce further events if necessary. */ |
2515 | ||
2516 | static void | |
53127008 SM |
2517 | record_btrace_maybe_mark_async_event |
2518 | (const std::vector<thread_info *> &moving, | |
2519 | const std::vector<thread_info *> &no_history) | |
a6b5be76 | 2520 | { |
53127008 SM |
2521 | bool more_moving = !moving.empty (); |
2522 | bool more_no_history = !no_history.empty ();; | |
a6b5be76 MM |
2523 | |
2524 | if (!more_moving && !more_no_history) | |
2525 | return; | |
2526 | ||
2527 | if (more_moving) | |
2528 | DEBUG ("movers pending"); | |
2529 | ||
2530 | if (more_no_history) | |
2531 | DEBUG ("no-history pending"); | |
2532 | ||
2533 | mark_async_event_handler (record_btrace_async_inferior_event_handler); | |
2534 | } | |
2535 | ||
f6ac5f3d | 2536 | /* The wait method of target record-btrace. */ |
b2f4cfde | 2537 | |
f6ac5f3d PA |
2538 | ptid_t |
2539 | record_btrace_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2540 | target_wait_flags options) |
b2f4cfde | 2541 | { |
53127008 SM |
2542 | std::vector<thread_info *> moving; |
2543 | std::vector<thread_info *> no_history; | |
52834460 | 2544 | |
b60cea74 TT |
2545 | DEBUG ("wait %s (0x%x)", target_pid_to_str (ptid).c_str (), |
2546 | (unsigned) options); | |
52834460 | 2547 | |
b2f4cfde | 2548 | /* As long as we're not replaying, just forward the request. */ |
f6ac5f3d PA |
2549 | if ((::execution_direction != EXEC_REVERSE) |
2550 | && !record_is_replaying (minus_one_ptid)) | |
b2f4cfde | 2551 | { |
b6a8c27b | 2552 | return this->beneath ()->wait (ptid, status, options); |
b2f4cfde MM |
2553 | } |
2554 | ||
e3cfc1c7 | 2555 | /* Keep a work list of moving threads. */ |
5b6d1e4f PA |
2556 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2557 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 PA |
2558 | if ((tp->btrace.flags & (BTHR_MOVE | BTHR_STOP)) != 0) |
2559 | moving.push_back (tp); | |
e3cfc1c7 | 2560 | |
53127008 | 2561 | if (moving.empty ()) |
52834460 | 2562 | { |
e3cfc1c7 | 2563 | *status = btrace_step_no_resumed (); |
52834460 | 2564 | |
a068643d | 2565 | DEBUG ("wait ended by %s: %s", target_pid_to_str (null_ptid).c_str (), |
23fdd69e | 2566 | target_waitstatus_to_string (status).c_str ()); |
e3cfc1c7 | 2567 | |
e3cfc1c7 | 2568 | return null_ptid; |
52834460 MM |
2569 | } |
2570 | ||
e3cfc1c7 MM |
2571 | /* Step moving threads one by one, one step each, until either one thread |
2572 | reports an event or we run out of threads to step. | |
2573 | ||
2574 | When stepping more than one thread, chances are that some threads reach | |
2575 | the end of their execution history earlier than others. If we reported | |
2576 | this immediately, all-stop on top of non-stop would stop all threads and | |
2577 | resume the same threads next time. And we would report the same thread | |
2578 | having reached the end of its execution history again. | |
2579 | ||
2580 | In the worst case, this would starve the other threads. But even if other | |
2581 | threads would be allowed to make progress, this would result in far too | |
2582 | many intermediate stops. | |
2583 | ||
2584 | We therefore delay the reporting of "no execution history" until we have | |
2585 | nothing else to report. By this time, all threads should have moved to | |
2586 | either the beginning or the end of their execution history. There will | |
2587 | be a single user-visible stop. */ | |
53127008 SM |
2588 | struct thread_info *eventing = NULL; |
2589 | while ((eventing == NULL) && !moving.empty ()) | |
e3cfc1c7 | 2590 | { |
53127008 | 2591 | for (unsigned int ix = 0; eventing == NULL && ix < moving.size ();) |
e3cfc1c7 | 2592 | { |
53127008 SM |
2593 | thread_info *tp = moving[ix]; |
2594 | ||
e3cfc1c7 MM |
2595 | *status = record_btrace_step_thread (tp); |
2596 | ||
2597 | switch (status->kind) | |
2598 | { | |
2599 | case TARGET_WAITKIND_IGNORE: | |
2600 | ix++; | |
2601 | break; | |
2602 | ||
2603 | case TARGET_WAITKIND_NO_HISTORY: | |
53127008 | 2604 | no_history.push_back (ordered_remove (moving, ix)); |
e3cfc1c7 MM |
2605 | break; |
2606 | ||
2607 | default: | |
53127008 | 2608 | eventing = unordered_remove (moving, ix); |
e3cfc1c7 MM |
2609 | break; |
2610 | } | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | if (eventing == NULL) | |
2615 | { | |
2616 | /* We started with at least one moving thread. This thread must have | |
2617 | either stopped or reached the end of its execution history. | |
2618 | ||
2619 | In the former case, EVENTING must not be NULL. | |
2620 | In the latter case, NO_HISTORY must not be empty. */ | |
53127008 | 2621 | gdb_assert (!no_history.empty ()); |
e3cfc1c7 MM |
2622 | |
2623 | /* We kept threads moving at the end of their execution history. Stop | |
2624 | EVENTING now that we are going to report its stop. */ | |
53127008 | 2625 | eventing = unordered_remove (no_history, 0); |
e3cfc1c7 MM |
2626 | eventing->btrace.flags &= ~BTHR_MOVE; |
2627 | ||
2628 | *status = btrace_step_no_history (); | |
2629 | } | |
2630 | ||
2631 | gdb_assert (eventing != NULL); | |
2632 | ||
2633 | /* We kept threads replaying at the end of their execution history. Stop | |
2634 | replaying EVENTING now that we are going to report its stop. */ | |
2635 | record_btrace_stop_replaying_at_end (eventing); | |
52834460 MM |
2636 | |
2637 | /* Stop all other threads. */ | |
5953356c | 2638 | if (!target_is_non_stop_p ()) |
53127008 | 2639 | { |
d89edf9b | 2640 | for (thread_info *tp : current_inferior ()->non_exited_threads ()) |
53127008 SM |
2641 | record_btrace_cancel_resume (tp); |
2642 | } | |
52834460 | 2643 | |
a6b5be76 MM |
2644 | /* In async mode, we need to announce further events. */ |
2645 | if (target_is_async_p ()) | |
2646 | record_btrace_maybe_mark_async_event (moving, no_history); | |
2647 | ||
52834460 | 2648 | /* Start record histories anew from the current position. */ |
e3cfc1c7 | 2649 | record_btrace_clear_histories (&eventing->btrace); |
52834460 MM |
2650 | |
2651 | /* We moved the replay position but did not update registers. */ | |
00431a78 | 2652 | registers_changed_thread (eventing); |
e3cfc1c7 | 2653 | |
43792cf0 PA |
2654 | DEBUG ("wait ended by thread %s (%s): %s", |
2655 | print_thread_id (eventing), | |
a068643d | 2656 | target_pid_to_str (eventing->ptid).c_str (), |
23fdd69e | 2657 | target_waitstatus_to_string (status).c_str ()); |
52834460 | 2658 | |
e3cfc1c7 | 2659 | return eventing->ptid; |
52834460 MM |
2660 | } |
2661 | ||
f6ac5f3d | 2662 | /* The stop method of target record-btrace. */ |
6e4879f0 | 2663 | |
f6ac5f3d PA |
2664 | void |
2665 | record_btrace_target::stop (ptid_t ptid) | |
6e4879f0 | 2666 | { |
a068643d | 2667 | DEBUG ("stop %s", target_pid_to_str (ptid).c_str ()); |
6e4879f0 MM |
2668 | |
2669 | /* As long as we're not replaying, just forward the request. */ | |
f6ac5f3d PA |
2670 | if ((::execution_direction != EXEC_REVERSE) |
2671 | && !record_is_replaying (minus_one_ptid)) | |
6e4879f0 | 2672 | { |
b6a8c27b | 2673 | this->beneath ()->stop (ptid); |
6e4879f0 MM |
2674 | } |
2675 | else | |
2676 | { | |
5b6d1e4f PA |
2677 | process_stratum_target *proc_target |
2678 | = current_inferior ()->process_target (); | |
2679 | ||
2680 | for (thread_info *tp : all_non_exited_threads (proc_target, ptid)) | |
08036331 PA |
2681 | { |
2682 | tp->btrace.flags &= ~BTHR_MOVE; | |
2683 | tp->btrace.flags |= BTHR_STOP; | |
2684 | } | |
6e4879f0 MM |
2685 | } |
2686 | } | |
2687 | ||
f6ac5f3d | 2688 | /* The can_execute_reverse method of target record-btrace. */ |
52834460 | 2689 | |
57810aa7 | 2690 | bool |
f6ac5f3d | 2691 | record_btrace_target::can_execute_reverse () |
52834460 | 2692 | { |
57810aa7 | 2693 | return true; |
52834460 MM |
2694 | } |
2695 | ||
f6ac5f3d | 2696 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
52834460 | 2697 | |
57810aa7 | 2698 | bool |
f6ac5f3d | 2699 | record_btrace_target::stopped_by_sw_breakpoint () |
52834460 | 2700 | { |
f6ac5f3d | 2701 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2702 | { |
2703 | struct thread_info *tp = inferior_thread (); | |
2704 | ||
2705 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
2706 | } | |
2707 | ||
b6a8c27b | 2708 | return this->beneath ()->stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2709 | } |
2710 | ||
f6ac5f3d | 2711 | /* The supports_stopped_by_sw_breakpoint method of target |
9e8915c6 PA |
2712 | record-btrace. */ |
2713 | ||
57810aa7 | 2714 | bool |
f6ac5f3d | 2715 | record_btrace_target::supports_stopped_by_sw_breakpoint () |
9e8915c6 | 2716 | { |
f6ac5f3d | 2717 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2718 | return true; |
9e8915c6 | 2719 | |
b6a8c27b | 2720 | return this->beneath ()->supports_stopped_by_sw_breakpoint (); |
9e8915c6 PA |
2721 | } |
2722 | ||
f6ac5f3d | 2723 | /* The stopped_by_sw_breakpoint method of target record-btrace. */ |
9e8915c6 | 2724 | |
57810aa7 | 2725 | bool |
f6ac5f3d | 2726 | record_btrace_target::stopped_by_hw_breakpoint () |
9e8915c6 | 2727 | { |
f6ac5f3d | 2728 | if (record_is_replaying (minus_one_ptid)) |
9e8915c6 PA |
2729 | { |
2730 | struct thread_info *tp = inferior_thread (); | |
2731 | ||
2732 | return tp->btrace.stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
2733 | } | |
2734 | ||
b6a8c27b | 2735 | return this->beneath ()->stopped_by_hw_breakpoint (); |
9e8915c6 PA |
2736 | } |
2737 | ||
f6ac5f3d | 2738 | /* The supports_stopped_by_hw_breakpoint method of target |
9e8915c6 PA |
2739 | record-btrace. */ |
2740 | ||
57810aa7 | 2741 | bool |
f6ac5f3d | 2742 | record_btrace_target::supports_stopped_by_hw_breakpoint () |
9e8915c6 | 2743 | { |
f6ac5f3d | 2744 | if (record_is_replaying (minus_one_ptid)) |
57810aa7 | 2745 | return true; |
52834460 | 2746 | |
b6a8c27b | 2747 | return this->beneath ()->supports_stopped_by_hw_breakpoint (); |
b2f4cfde MM |
2748 | } |
2749 | ||
f6ac5f3d | 2750 | /* The update_thread_list method of target record-btrace. */ |
e2887aa3 | 2751 | |
f6ac5f3d PA |
2752 | void |
2753 | record_btrace_target::update_thread_list () | |
e2887aa3 | 2754 | { |
e8032dde | 2755 | /* We don't add or remove threads during replay. */ |
f6ac5f3d | 2756 | if (record_is_replaying (minus_one_ptid)) |
e2887aa3 MM |
2757 | return; |
2758 | ||
2759 | /* Forward the request. */ | |
b6a8c27b | 2760 | this->beneath ()->update_thread_list (); |
e2887aa3 MM |
2761 | } |
2762 | ||
f6ac5f3d | 2763 | /* The thread_alive method of target record-btrace. */ |
e2887aa3 | 2764 | |
57810aa7 | 2765 | bool |
f6ac5f3d | 2766 | record_btrace_target::thread_alive (ptid_t ptid) |
e2887aa3 MM |
2767 | { |
2768 | /* We don't add or remove threads during replay. */ | |
f6ac5f3d | 2769 | if (record_is_replaying (minus_one_ptid)) |
00431a78 | 2770 | return true; |
e2887aa3 MM |
2771 | |
2772 | /* Forward the request. */ | |
b6a8c27b | 2773 | return this->beneath ()->thread_alive (ptid); |
e2887aa3 MM |
2774 | } |
2775 | ||
066ce621 MM |
2776 | /* Set the replay branch trace instruction iterator. If IT is NULL, replay |
2777 | is stopped. */ | |
2778 | ||
2779 | static void | |
2780 | record_btrace_set_replay (struct thread_info *tp, | |
2781 | const struct btrace_insn_iterator *it) | |
2782 | { | |
2783 | struct btrace_thread_info *btinfo; | |
2784 | ||
2785 | btinfo = &tp->btrace; | |
2786 | ||
a0f1b963 | 2787 | if (it == NULL) |
52834460 | 2788 | record_btrace_stop_replaying (tp); |
066ce621 MM |
2789 | else |
2790 | { | |
2791 | if (btinfo->replay == NULL) | |
52834460 | 2792 | record_btrace_start_replaying (tp); |
066ce621 MM |
2793 | else if (btrace_insn_cmp (btinfo->replay, it) == 0) |
2794 | return; | |
2795 | ||
2796 | *btinfo->replay = *it; | |
00431a78 | 2797 | registers_changed_thread (tp); |
066ce621 MM |
2798 | } |
2799 | ||
52834460 MM |
2800 | /* Start anew from the new replay position. */ |
2801 | record_btrace_clear_histories (btinfo); | |
485668e5 | 2802 | |
f2ffa92b PA |
2803 | inferior_thread ()->suspend.stop_pc |
2804 | = regcache_read_pc (get_current_regcache ()); | |
485668e5 | 2805 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
066ce621 MM |
2806 | } |
2807 | ||
f6ac5f3d | 2808 | /* The goto_record_begin method of target record-btrace. */ |
066ce621 | 2809 | |
f6ac5f3d PA |
2810 | void |
2811 | record_btrace_target::goto_record_begin () | |
066ce621 MM |
2812 | { |
2813 | struct thread_info *tp; | |
2814 | struct btrace_insn_iterator begin; | |
2815 | ||
2816 | tp = require_btrace_thread (); | |
2817 | ||
2818 | btrace_insn_begin (&begin, &tp->btrace); | |
b61ce85c MM |
2819 | |
2820 | /* Skip gaps at the beginning of the trace. */ | |
2821 | while (btrace_insn_get (&begin) == NULL) | |
2822 | { | |
2823 | unsigned int steps; | |
2824 | ||
2825 | steps = btrace_insn_next (&begin, 1); | |
2826 | if (steps == 0) | |
2827 | error (_("No trace.")); | |
2828 | } | |
2829 | ||
066ce621 | 2830 | record_btrace_set_replay (tp, &begin); |
066ce621 MM |
2831 | } |
2832 | ||
f6ac5f3d | 2833 | /* The goto_record_end method of target record-btrace. */ |
066ce621 | 2834 | |
f6ac5f3d PA |
2835 | void |
2836 | record_btrace_target::goto_record_end () | |
066ce621 MM |
2837 | { |
2838 | struct thread_info *tp; | |
2839 | ||
2840 | tp = require_btrace_thread (); | |
2841 | ||
2842 | record_btrace_set_replay (tp, NULL); | |
066ce621 MM |
2843 | } |
2844 | ||
f6ac5f3d | 2845 | /* The goto_record method of target record-btrace. */ |
066ce621 | 2846 | |
f6ac5f3d PA |
2847 | void |
2848 | record_btrace_target::goto_record (ULONGEST insn) | |
066ce621 MM |
2849 | { |
2850 | struct thread_info *tp; | |
2851 | struct btrace_insn_iterator it; | |
2852 | unsigned int number; | |
2853 | int found; | |
2854 | ||
2855 | number = insn; | |
2856 | ||
2857 | /* Check for wrap-arounds. */ | |
2858 | if (number != insn) | |
2859 | error (_("Instruction number out of range.")); | |
2860 | ||
2861 | tp = require_btrace_thread (); | |
2862 | ||
2863 | found = btrace_find_insn_by_number (&it, &tp->btrace, number); | |
69090cee TW |
2864 | |
2865 | /* Check if the instruction could not be found or is a gap. */ | |
2866 | if (found == 0 || btrace_insn_get (&it) == NULL) | |
066ce621 MM |
2867 | error (_("No such instruction.")); |
2868 | ||
2869 | record_btrace_set_replay (tp, &it); | |
066ce621 MM |
2870 | } |
2871 | ||
f6ac5f3d | 2872 | /* The record_stop_replaying method of target record-btrace. */ |
797094dd | 2873 | |
f6ac5f3d PA |
2874 | void |
2875 | record_btrace_target::record_stop_replaying () | |
797094dd | 2876 | { |
d89edf9b | 2877 | for (thread_info *tp : current_inferior ()->non_exited_threads ()) |
797094dd MM |
2878 | record_btrace_stop_replaying (tp); |
2879 | } | |
2880 | ||
f6ac5f3d | 2881 | /* The execution_direction target method. */ |
70ad5bff | 2882 | |
f6ac5f3d PA |
2883 | enum exec_direction_kind |
2884 | record_btrace_target::execution_direction () | |
70ad5bff MM |
2885 | { |
2886 | return record_btrace_resume_exec_dir; | |
2887 | } | |
2888 | ||
f6ac5f3d | 2889 | /* The prepare_to_generate_core target method. */ |
aef92902 | 2890 | |
f6ac5f3d PA |
2891 | void |
2892 | record_btrace_target::prepare_to_generate_core () | |
aef92902 MM |
2893 | { |
2894 | record_btrace_generating_corefile = 1; | |
2895 | } | |
2896 | ||
f6ac5f3d | 2897 | /* The done_generating_core target method. */ |
aef92902 | 2898 | |
f6ac5f3d PA |
2899 | void |
2900 | record_btrace_target::done_generating_core () | |
aef92902 MM |
2901 | { |
2902 | record_btrace_generating_corefile = 0; | |
2903 | } | |
2904 | ||
f4abbc16 MM |
2905 | /* Start recording in BTS format. */ |
2906 | ||
2907 | static void | |
cdb34d4a | 2908 | cmd_record_btrace_bts_start (const char *args, int from_tty) |
f4abbc16 | 2909 | { |
f4abbc16 MM |
2910 | if (args != NULL && *args != 0) |
2911 | error (_("Invalid argument.")); | |
2912 | ||
2913 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2914 | ||
a70b8144 | 2915 | try |
492d29ea | 2916 | { |
95a6b0a1 | 2917 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2918 | } |
230d2906 | 2919 | catch (const gdb_exception &exception) |
f4abbc16 MM |
2920 | { |
2921 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2922 | throw; |
f4abbc16 MM |
2923 | } |
2924 | } | |
2925 | ||
bc504a31 | 2926 | /* Start recording in Intel Processor Trace format. */ |
afedecd3 MM |
2927 | |
2928 | static void | |
cdb34d4a | 2929 | cmd_record_btrace_pt_start (const char *args, int from_tty) |
afedecd3 MM |
2930 | { |
2931 | if (args != NULL && *args != 0) | |
2932 | error (_("Invalid argument.")); | |
2933 | ||
b20a6524 | 2934 | record_btrace_conf.format = BTRACE_FORMAT_PT; |
f4abbc16 | 2935 | |
a70b8144 | 2936 | try |
492d29ea | 2937 | { |
95a6b0a1 | 2938 | execute_command ("target record-btrace", from_tty); |
492d29ea | 2939 | } |
230d2906 | 2940 | catch (const gdb_exception &exception) |
492d29ea PA |
2941 | { |
2942 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2943 | throw; |
492d29ea | 2944 | } |
afedecd3 MM |
2945 | } |
2946 | ||
b20a6524 MM |
2947 | /* Alias for "target record". */ |
2948 | ||
2949 | static void | |
981a3fb3 | 2950 | cmd_record_btrace_start (const char *args, int from_tty) |
b20a6524 MM |
2951 | { |
2952 | if (args != NULL && *args != 0) | |
2953 | error (_("Invalid argument.")); | |
2954 | ||
2955 | record_btrace_conf.format = BTRACE_FORMAT_PT; | |
2956 | ||
a70b8144 | 2957 | try |
b20a6524 | 2958 | { |
95a6b0a1 | 2959 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2960 | } |
230d2906 | 2961 | catch (const gdb_exception &exception) |
b20a6524 MM |
2962 | { |
2963 | record_btrace_conf.format = BTRACE_FORMAT_BTS; | |
2964 | ||
a70b8144 | 2965 | try |
b20a6524 | 2966 | { |
95a6b0a1 | 2967 | execute_command ("target record-btrace", from_tty); |
b20a6524 | 2968 | } |
230d2906 | 2969 | catch (const gdb_exception &ex) |
b20a6524 MM |
2970 | { |
2971 | record_btrace_conf.format = BTRACE_FORMAT_NONE; | |
eedc3f4f | 2972 | throw; |
b20a6524 | 2973 | } |
b20a6524 | 2974 | } |
b20a6524 MM |
2975 | } |
2976 | ||
67b5c0c1 MM |
2977 | /* The "show record btrace replay-memory-access" command. */ |
2978 | ||
2979 | static void | |
2980 | cmd_show_replay_memory_access (struct ui_file *file, int from_tty, | |
2981 | struct cmd_list_element *c, const char *value) | |
2982 | { | |
2983 | fprintf_filtered (gdb_stdout, _("Replay memory access is %s.\n"), | |
2984 | replay_memory_access); | |
2985 | } | |
2986 | ||
4a4495d6 MM |
2987 | /* The "set record btrace cpu none" command. */ |
2988 | ||
2989 | static void | |
2990 | cmd_set_record_btrace_cpu_none (const char *args, int from_tty) | |
2991 | { | |
2992 | if (args != nullptr && *args != 0) | |
2993 | error (_("Trailing junk: '%s'."), args); | |
2994 | ||
2995 | record_btrace_cpu_state = CS_NONE; | |
2996 | } | |
2997 | ||
2998 | /* The "set record btrace cpu auto" command. */ | |
2999 | ||
3000 | static void | |
3001 | cmd_set_record_btrace_cpu_auto (const char *args, int from_tty) | |
3002 | { | |
3003 | if (args != nullptr && *args != 0) | |
3004 | error (_("Trailing junk: '%s'."), args); | |
3005 | ||
3006 | record_btrace_cpu_state = CS_AUTO; | |
3007 | } | |
3008 | ||
3009 | /* The "set record btrace cpu" command. */ | |
3010 | ||
3011 | static void | |
3012 | cmd_set_record_btrace_cpu (const char *args, int from_tty) | |
3013 | { | |
3014 | if (args == nullptr) | |
3015 | args = ""; | |
3016 | ||
3017 | /* We use a hard-coded vendor string for now. */ | |
3018 | unsigned int family, model, stepping; | |
3019 | int l1, l2, matches = sscanf (args, "intel: %u/%u%n/%u%n", &family, | |
3020 | &model, &l1, &stepping, &l2); | |
3021 | if (matches == 3) | |
3022 | { | |
3023 | if (strlen (args) != l2) | |
3024 | error (_("Trailing junk: '%s'."), args + l2); | |
3025 | } | |
3026 | else if (matches == 2) | |
3027 | { | |
3028 | if (strlen (args) != l1) | |
3029 | error (_("Trailing junk: '%s'."), args + l1); | |
3030 | ||
3031 | stepping = 0; | |
3032 | } | |
3033 | else | |
3034 | error (_("Bad format. See \"help set record btrace cpu\".")); | |
3035 | ||
3036 | if (USHRT_MAX < family) | |
3037 | error (_("Cpu family too big.")); | |
3038 | ||
3039 | if (UCHAR_MAX < model) | |
3040 | error (_("Cpu model too big.")); | |
3041 | ||
3042 | if (UCHAR_MAX < stepping) | |
3043 | error (_("Cpu stepping too big.")); | |
3044 | ||
3045 | record_btrace_cpu.vendor = CV_INTEL; | |
3046 | record_btrace_cpu.family = family; | |
3047 | record_btrace_cpu.model = model; | |
3048 | record_btrace_cpu.stepping = stepping; | |
3049 | ||
3050 | record_btrace_cpu_state = CS_CPU; | |
3051 | } | |
3052 | ||
3053 | /* The "show record btrace cpu" command. */ | |
3054 | ||
3055 | static void | |
3056 | cmd_show_record_btrace_cpu (const char *args, int from_tty) | |
3057 | { | |
4a4495d6 MM |
3058 | if (args != nullptr && *args != 0) |
3059 | error (_("Trailing junk: '%s'."), args); | |
3060 | ||
3061 | switch (record_btrace_cpu_state) | |
3062 | { | |
3063 | case CS_AUTO: | |
3064 | printf_unfiltered (_("btrace cpu is 'auto'.\n")); | |
3065 | return; | |
3066 | ||
3067 | case CS_NONE: | |
3068 | printf_unfiltered (_("btrace cpu is 'none'.\n")); | |
3069 | return; | |
3070 | ||
3071 | case CS_CPU: | |
3072 | switch (record_btrace_cpu.vendor) | |
3073 | { | |
3074 | case CV_INTEL: | |
3075 | if (record_btrace_cpu.stepping == 0) | |
3076 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u'.\n"), | |
3077 | record_btrace_cpu.family, | |
3078 | record_btrace_cpu.model); | |
3079 | else | |
3080 | printf_unfiltered (_("btrace cpu is 'intel: %u/%u/%u'.\n"), | |
3081 | record_btrace_cpu.family, | |
3082 | record_btrace_cpu.model, | |
3083 | record_btrace_cpu.stepping); | |
3084 | return; | |
3085 | } | |
3086 | } | |
3087 | ||
3088 | error (_("Internal error: bad cpu state.")); | |
3089 | } | |
3090 | ||
b20a6524 MM |
3091 | /* The "record bts buffer-size" show value function. */ |
3092 | ||
3093 | static void | |
3094 | show_record_bts_buffer_size_value (struct ui_file *file, int from_tty, | |
3095 | struct cmd_list_element *c, | |
3096 | const char *value) | |
3097 | { | |
3098 | fprintf_filtered (file, _("The record/replay bts buffer size is %s.\n"), | |
3099 | value); | |
3100 | } | |
3101 | ||
3102 | /* The "record pt buffer-size" show value function. */ | |
3103 | ||
3104 | static void | |
3105 | show_record_pt_buffer_size_value (struct ui_file *file, int from_tty, | |
3106 | struct cmd_list_element *c, | |
3107 | const char *value) | |
3108 | { | |
3109 | fprintf_filtered (file, _("The record/replay pt buffer size is %s.\n"), | |
3110 | value); | |
3111 | } | |
3112 | ||
afedecd3 MM |
3113 | /* Initialize btrace commands. */ |
3114 | ||
6c265988 | 3115 | void _initialize_record_btrace (); |
afedecd3 | 3116 | void |
6c265988 | 3117 | _initialize_record_btrace () |
afedecd3 | 3118 | { |
f4abbc16 MM |
3119 | add_prefix_cmd ("btrace", class_obscure, cmd_record_btrace_start, |
3120 | _("Start branch trace recording."), &record_btrace_cmdlist, | |
3121 | "record btrace ", 0, &record_cmdlist); | |
afedecd3 MM |
3122 | add_alias_cmd ("b", "btrace", class_obscure, 1, &record_cmdlist); |
3123 | ||
f4abbc16 MM |
3124 | add_cmd ("bts", class_obscure, cmd_record_btrace_bts_start, |
3125 | _("\ | |
3126 | Start branch trace recording in Branch Trace Store (BTS) format.\n\n\ | |
3127 | The processor stores a from/to record for each branch into a cyclic buffer.\n\ | |
3128 | This format may not be available on all processors."), | |
3129 | &record_btrace_cmdlist); | |
3130 | add_alias_cmd ("bts", "btrace bts", class_obscure, 1, &record_cmdlist); | |
3131 | ||
b20a6524 MM |
3132 | add_cmd ("pt", class_obscure, cmd_record_btrace_pt_start, |
3133 | _("\ | |
bc504a31 | 3134 | Start branch trace recording in Intel Processor Trace format.\n\n\ |
b20a6524 MM |
3135 | This format may not be available on all processors."), |
3136 | &record_btrace_cmdlist); | |
3137 | add_alias_cmd ("pt", "btrace pt", class_obscure, 1, &record_cmdlist); | |
3138 | ||
0743fc83 TT |
3139 | add_basic_prefix_cmd ("btrace", class_support, |
3140 | _("Set record options."), &set_record_btrace_cmdlist, | |
3141 | "set record btrace ", 0, &set_record_cmdlist); | |
67b5c0c1 | 3142 | |
0743fc83 TT |
3143 | add_show_prefix_cmd ("btrace", class_support, |
3144 | _("Show record options."), &show_record_btrace_cmdlist, | |
3145 | "show record btrace ", 0, &show_record_cmdlist); | |
67b5c0c1 MM |
3146 | |
3147 | add_setshow_enum_cmd ("replay-memory-access", no_class, | |
3148 | replay_memory_access_types, &replay_memory_access, _("\ | |
3149 | Set what memory accesses are allowed during replay."), _("\ | |
3150 | Show what memory accesses are allowed during replay."), | |
3151 | _("Default is READ-ONLY.\n\n\ | |
3152 | The btrace record target does not trace data.\n\ | |
3153 | The memory therefore corresponds to the live target and not \ | |
3154 | to the current replay position.\n\n\ | |
3155 | When READ-ONLY, allow accesses to read-only memory during replay.\n\ | |
3156 | When READ-WRITE, allow accesses to read-only and read-write memory during \ | |
3157 | replay."), | |
3158 | NULL, cmd_show_replay_memory_access, | |
3159 | &set_record_btrace_cmdlist, | |
3160 | &show_record_btrace_cmdlist); | |
3161 | ||
4a4495d6 MM |
3162 | add_prefix_cmd ("cpu", class_support, cmd_set_record_btrace_cpu, |
3163 | _("\ | |
3164 | Set the cpu to be used for trace decode.\n\n\ | |
55063ddb TT |
3165 | The format is \"VENDOR:IDENTIFIER\" or \"none\" or \"auto\" (default).\n\ |
3166 | For vendor \"intel\" the format is \"FAMILY/MODEL[/STEPPING]\".\n\n\ | |
4a4495d6 MM |
3167 | When decoding branch trace, enable errata workarounds for the specified cpu.\n\ |
3168 | The default is \"auto\", which uses the cpu on which the trace was recorded.\n\ | |
3169 | When GDB does not support that cpu, this option can be used to enable\n\ | |
3170 | workarounds for a similar cpu that GDB supports.\n\n\ | |
3171 | When set to \"none\", errata workarounds are disabled."), | |
3172 | &set_record_btrace_cpu_cmdlist, | |
590042fc | 3173 | "set record btrace cpu ", 1, |
4a4495d6 MM |
3174 | &set_record_btrace_cmdlist); |
3175 | ||
3176 | add_cmd ("auto", class_support, cmd_set_record_btrace_cpu_auto, _("\ | |
3177 | Automatically determine the cpu to be used for trace decode."), | |
3178 | &set_record_btrace_cpu_cmdlist); | |
3179 | ||
3180 | add_cmd ("none", class_support, cmd_set_record_btrace_cpu_none, _("\ | |
3181 | Do not enable errata workarounds for trace decode."), | |
3182 | &set_record_btrace_cpu_cmdlist); | |
3183 | ||
3184 | add_cmd ("cpu", class_support, cmd_show_record_btrace_cpu, _("\ | |
3185 | Show the cpu to be used for trace decode."), | |
3186 | &show_record_btrace_cmdlist); | |
3187 | ||
0743fc83 TT |
3188 | add_basic_prefix_cmd ("bts", class_support, |
3189 | _("Set record btrace bts options."), | |
3190 | &set_record_btrace_bts_cmdlist, | |
3191 | "set record btrace bts ", 0, | |
3192 | &set_record_btrace_cmdlist); | |
d33501a5 | 3193 | |
0743fc83 TT |
3194 | add_show_prefix_cmd ("bts", class_support, |
3195 | _("Show record btrace bts options."), | |
3196 | &show_record_btrace_bts_cmdlist, | |
3197 | "show record btrace bts ", 0, | |
3198 | &show_record_btrace_cmdlist); | |
d33501a5 MM |
3199 | |
3200 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3201 | &record_btrace_conf.bts.size, | |
3202 | _("Set the record/replay bts buffer size."), | |
3203 | _("Show the record/replay bts buffer size."), _("\ | |
3204 | When starting recording request a trace buffer of this size. \ | |
3205 | The actual buffer size may differ from the requested size. \ | |
3206 | Use \"info record\" to see the actual buffer size.\n\n\ | |
3207 | Bigger buffers allow longer recording but also take more time to process \ | |
3208 | the recorded execution trace.\n\n\ | |
b20a6524 MM |
3209 | The trace buffer size may not be changed while recording."), NULL, |
3210 | show_record_bts_buffer_size_value, | |
d33501a5 MM |
3211 | &set_record_btrace_bts_cmdlist, |
3212 | &show_record_btrace_bts_cmdlist); | |
3213 | ||
0743fc83 TT |
3214 | add_basic_prefix_cmd ("pt", class_support, |
3215 | _("Set record btrace pt options."), | |
3216 | &set_record_btrace_pt_cmdlist, | |
3217 | "set record btrace pt ", 0, | |
3218 | &set_record_btrace_cmdlist); | |
3219 | ||
3220 | add_show_prefix_cmd ("pt", class_support, | |
3221 | _("Show record btrace pt options."), | |
3222 | &show_record_btrace_pt_cmdlist, | |
3223 | "show record btrace pt ", 0, | |
3224 | &show_record_btrace_cmdlist); | |
b20a6524 MM |
3225 | |
3226 | add_setshow_uinteger_cmd ("buffer-size", no_class, | |
3227 | &record_btrace_conf.pt.size, | |
3228 | _("Set the record/replay pt buffer size."), | |
3229 | _("Show the record/replay pt buffer size."), _("\ | |
3230 | Bigger buffers allow longer recording but also take more time to process \ | |
3231 | the recorded execution.\n\ | |
3232 | The actual buffer size may differ from the requested size. Use \"info record\" \ | |
3233 | to see the actual buffer size."), NULL, show_record_pt_buffer_size_value, | |
3234 | &set_record_btrace_pt_cmdlist, | |
3235 | &show_record_btrace_pt_cmdlist); | |
3236 | ||
d9f719f1 | 3237 | add_target (record_btrace_target_info, record_btrace_target_open); |
0b722aec MM |
3238 | |
3239 | bfcache = htab_create_alloc (50, bfcache_hash, bfcache_eq, NULL, | |
3240 | xcalloc, xfree); | |
d33501a5 MM |
3241 | |
3242 | record_btrace_conf.bts.size = 64 * 1024; | |
b20a6524 | 3243 | record_btrace_conf.pt.size = 16 * 1024; |
afedecd3 | 3244 | } |