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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
45741a9c | 35 | #include "infrun.h" |
c906108c SS |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
38 | #include "language.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
fe898f56 | 49 | #include "block.h" |
a77053c2 | 50 | #include "solib.h" |
84acb35a JJ |
51 | #include "solist.h" |
52 | #include "observer.h" | |
765dc015 | 53 | #include "memattr.h" |
f7f9143b | 54 | #include "ada-lang.h" |
d1aa2f50 | 55 | #include "top.h" |
79a45b7d | 56 | #include "valprint.h" |
4efc6507 | 57 | #include "jit.h" |
65d79d4b | 58 | #include "parser-defs.h" |
55aa24fb SDJ |
59 | #include "gdb_regex.h" |
60 | #include "probe.h" | |
e9cafbcc | 61 | #include "cli/cli-utils.h" |
be34f849 | 62 | #include "continuations.h" |
1bfeeb0f JL |
63 | #include "stack.h" |
64 | #include "skip.h" | |
b775012e | 65 | #include "ax-gdb.h" |
e2e4d78b | 66 | #include "dummy-frame.h" |
5589af0e | 67 | #include "interps.h" |
d3ce09f5 | 68 | #include "format.h" |
cfc31633 | 69 | #include "thread-fsm.h" |
5d5658a1 | 70 | #include "tid-parse.h" |
d3ce09f5 | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
6dddc817 | 80 | #include "extension.h" |
325fac50 | 81 | #include <algorithm> |
5ed8105e | 82 | #include "progspace-and-thread.h" |
6c5b2ebe | 83 | #include "common/array-view.h" |
76f9c9cf | 84 | #include "common/gdb_optional.h" |
104c1213 | 85 | |
e7e8980f YQ |
86 | /* Enums for exception-handling support. */ |
87 | enum exception_event_kind | |
88 | { | |
89 | EX_EVENT_THROW, | |
591f19e8 | 90 | EX_EVENT_RETHROW, |
e7e8980f YQ |
91 | EX_EVENT_CATCH |
92 | }; | |
93 | ||
4a64f543 | 94 | /* Prototypes for local functions. */ |
c906108c | 95 | |
896b6bda | 96 | static void map_breakpoint_numbers (const char *, |
48649e1b | 97 | gdb::function_view<void (breakpoint *)>); |
c906108c | 98 | |
348d480f PA |
99 | static void breakpoint_re_set_default (struct breakpoint *); |
100 | ||
f00aae0f KS |
101 | static void |
102 | create_sals_from_location_default (const struct event_location *location, | |
103 | struct linespec_result *canonical, | |
104 | enum bptype type_wanted); | |
983af33b SDJ |
105 | |
106 | static void create_breakpoints_sal_default (struct gdbarch *, | |
107 | struct linespec_result *, | |
e1e01040 PA |
108 | gdb::unique_xmalloc_ptr<char>, |
109 | gdb::unique_xmalloc_ptr<char>, | |
110 | enum bptype, | |
983af33b SDJ |
111 | enum bpdisp, int, int, |
112 | int, | |
113 | const struct breakpoint_ops *, | |
44f238bb | 114 | int, int, int, unsigned); |
983af33b | 115 | |
6c5b2ebe PA |
116 | static std::vector<symtab_and_line> decode_location_default |
117 | (struct breakpoint *b, const struct event_location *location, | |
118 | struct program_space *search_pspace); | |
983af33b | 119 | |
a9634178 | 120 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 121 | |
a14ed312 | 122 | static void mention (struct breakpoint *); |
c906108c | 123 | |
348d480f PA |
124 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
125 | enum bptype, | |
c0a91b2b | 126 | const struct breakpoint_ops *); |
3742cc8b YQ |
127 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
128 | const struct symtab_and_line *); | |
129 | ||
4a64f543 MS |
130 | /* This function is used in gdbtk sources and thus can not be made |
131 | static. */ | |
63c252f8 | 132 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 133 | struct symtab_and_line, |
c0a91b2b TT |
134 | enum bptype, |
135 | const struct breakpoint_ops *); | |
c906108c | 136 | |
06edf0c0 PA |
137 | static struct breakpoint * |
138 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
139 | enum bptype type, | |
a1aa2221 LM |
140 | const struct breakpoint_ops *ops, |
141 | int loc_enabled); | |
06edf0c0 | 142 | |
76897487 KB |
143 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
144 | ||
a6d9a66e UW |
145 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
146 | CORE_ADDR bpaddr, | |
88f7da05 | 147 | enum bptype bptype); |
76897487 | 148 | |
6c95b8df PA |
149 | static void describe_other_breakpoints (struct gdbarch *, |
150 | struct program_space *, CORE_ADDR, | |
5af949e3 | 151 | struct obj_section *, int); |
c906108c | 152 | |
85d721b8 PA |
153 | static int watchpoint_locations_match (struct bp_location *loc1, |
154 | struct bp_location *loc2); | |
155 | ||
f1310107 | 156 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 157 | const struct address_space *aspace, |
f1310107 TJB |
158 | CORE_ADDR addr); |
159 | ||
d35ae833 | 160 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 161 | const address_space *, |
d35ae833 PA |
162 | CORE_ADDR, int); |
163 | ||
834c0d03 | 164 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 165 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 166 | |
e514a9d6 | 167 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 168 | |
a14ed312 | 169 | static int hw_breakpoint_used_count (void); |
c906108c | 170 | |
a1398e0c PA |
171 | static int hw_watchpoint_use_count (struct breakpoint *); |
172 | ||
173 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
174 | enum bptype type, | |
175 | int *other_type_used); | |
c906108c | 176 | |
816338b5 SS |
177 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
178 | int count); | |
c906108c | 179 | |
fe3f5fa8 | 180 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
181 | static void incref_bp_location (struct bp_location *loc); |
182 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 183 | |
39d61571 | 184 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 185 | |
44702360 PA |
186 | /* update_global_location_list's modes of operation wrt to whether to |
187 | insert locations now. */ | |
188 | enum ugll_insert_mode | |
189 | { | |
190 | /* Don't insert any breakpoint locations into the inferior, only | |
191 | remove already-inserted locations that no longer should be | |
192 | inserted. Functions that delete a breakpoint or breakpoints | |
193 | should specify this mode, so that deleting a breakpoint doesn't | |
194 | have the side effect of inserting the locations of other | |
195 | breakpoints that are marked not-inserted, but should_be_inserted | |
196 | returns true on them. | |
197 | ||
198 | This behavior is useful is situations close to tear-down -- e.g., | |
199 | after an exec, while the target still has execution, but | |
200 | breakpoint shadows of the previous executable image should *NOT* | |
201 | be restored to the new image; or before detaching, where the | |
202 | target still has execution and wants to delete breakpoints from | |
203 | GDB's lists, and all breakpoints had already been removed from | |
204 | the inferior. */ | |
205 | UGLL_DONT_INSERT, | |
206 | ||
a25a5a45 PA |
207 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
208 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
209 | UGLL_MAY_INSERT, |
210 | ||
a25a5a45 PA |
211 | /* Insert locations now, irrespective of |
212 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
213 | stopped right now, and the user did "continue". We need to | |
214 | insert breakpoints _before_ resuming the target, but | |
215 | UGLL_MAY_INSERT wouldn't insert them, because | |
216 | breakpoints_should_be_inserted_now returns false at that point, | |
217 | as no thread is running yet. */ | |
04086b45 | 218 | UGLL_INSERT |
44702360 PA |
219 | }; |
220 | ||
221 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 222 | |
44702360 | 223 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 224 | |
d77f58be | 225 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
226 | |
227 | static void insert_breakpoint_locations (void); | |
a5606eee | 228 | |
1042e4c0 SS |
229 | static void enable_trace_command (char *, int); |
230 | ||
231 | static void disable_trace_command (char *, int); | |
232 | ||
0b39b52e | 233 | static void trace_pass_command (const char *, int); |
1042e4c0 | 234 | |
558a9d82 YQ |
235 | static void set_tracepoint_count (int num); |
236 | ||
9c06b0b4 TJB |
237 | static int is_masked_watchpoint (const struct breakpoint *b); |
238 | ||
b775012e LM |
239 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
240 | ||
983af33b SDJ |
241 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
242 | otherwise. */ | |
243 | ||
244 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 245 | |
2060206e PA |
246 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
247 | that are implemented on top of software or hardware breakpoints | |
248 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
249 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
250 | ||
251 | /* Internal breakpoints class type. */ | |
06edf0c0 | 252 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
253 | |
254 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
255 | static struct breakpoint_ops momentary_breakpoint_ops; |
256 | ||
2060206e PA |
257 | /* The breakpoint_ops structure to be used in regular user created |
258 | breakpoints. */ | |
259 | struct breakpoint_ops bkpt_breakpoint_ops; | |
260 | ||
55aa24fb SDJ |
261 | /* Breakpoints set on probes. */ |
262 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
263 | ||
e7e0cddf | 264 | /* Dynamic printf class type. */ |
c5867ab6 | 265 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 266 | |
d3ce09f5 SS |
267 | /* The style in which to perform a dynamic printf. This is a user |
268 | option because different output options have different tradeoffs; | |
269 | if GDB does the printing, there is better error handling if there | |
270 | is a problem with any of the arguments, but using an inferior | |
271 | function lets you have special-purpose printers and sending of | |
272 | output to the same place as compiled-in print functions. */ | |
273 | ||
274 | static const char dprintf_style_gdb[] = "gdb"; | |
275 | static const char dprintf_style_call[] = "call"; | |
276 | static const char dprintf_style_agent[] = "agent"; | |
277 | static const char *const dprintf_style_enums[] = { | |
278 | dprintf_style_gdb, | |
279 | dprintf_style_call, | |
280 | dprintf_style_agent, | |
281 | NULL | |
282 | }; | |
283 | static const char *dprintf_style = dprintf_style_gdb; | |
284 | ||
285 | /* The function to use for dynamic printf if the preferred style is to | |
286 | call into the inferior. The value is simply a string that is | |
287 | copied into the command, so it can be anything that GDB can | |
288 | evaluate to a callable address, not necessarily a function name. */ | |
289 | ||
bde6261a | 290 | static char *dprintf_function; |
d3ce09f5 SS |
291 | |
292 | /* The channel to use for dynamic printf if the preferred style is to | |
293 | call into the inferior; if a nonempty string, it will be passed to | |
294 | the call as the first argument, with the format string as the | |
295 | second. As with the dprintf function, this can be anything that | |
296 | GDB knows how to evaluate, so in addition to common choices like | |
297 | "stderr", this could be an app-specific expression like | |
298 | "mystreams[curlogger]". */ | |
299 | ||
bde6261a | 300 | static char *dprintf_channel; |
d3ce09f5 SS |
301 | |
302 | /* True if dprintf commands should continue to operate even if GDB | |
303 | has disconnected. */ | |
304 | static int disconnected_dprintf = 1; | |
305 | ||
5cea2a26 PA |
306 | struct command_line * |
307 | breakpoint_commands (struct breakpoint *b) | |
308 | { | |
d1b0a7bf | 309 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 310 | } |
3daf8fe5 | 311 | |
f3b1572e PA |
312 | /* Flag indicating that a command has proceeded the inferior past the |
313 | current breakpoint. */ | |
314 | ||
315 | static int breakpoint_proceeded; | |
316 | ||
956a9fb9 | 317 | const char * |
2cec12e5 AR |
318 | bpdisp_text (enum bpdisp disp) |
319 | { | |
4a64f543 MS |
320 | /* NOTE: the following values are a part of MI protocol and |
321 | represent values of 'disp' field returned when inferior stops at | |
322 | a breakpoint. */ | |
bc043ef3 | 323 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 324 | |
2cec12e5 AR |
325 | return bpdisps[(int) disp]; |
326 | } | |
c906108c | 327 | |
4a64f543 | 328 | /* Prototypes for exported functions. */ |
c906108c | 329 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 330 | if such is available. */ |
c906108c SS |
331 | static int can_use_hw_watchpoints; |
332 | ||
920d2a44 AC |
333 | static void |
334 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
335 | struct cmd_list_element *c, | |
336 | const char *value) | |
337 | { | |
3e43a32a MS |
338 | fprintf_filtered (file, |
339 | _("Debugger's willingness to use " | |
340 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
341 | value); |
342 | } | |
343 | ||
fa8d40ab JJ |
344 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
345 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 346 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
347 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
348 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
349 | static void |
350 | show_pending_break_support (struct ui_file *file, int from_tty, | |
351 | struct cmd_list_element *c, | |
352 | const char *value) | |
353 | { | |
3e43a32a MS |
354 | fprintf_filtered (file, |
355 | _("Debugger's behavior regarding " | |
356 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
357 | value); |
358 | } | |
fa8d40ab | 359 | |
765dc015 | 360 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 361 | set with "break" but falling in read-only memory. |
765dc015 VP |
362 | If 0, gdb will warn about such breakpoints, but won't automatically |
363 | use hardware breakpoints. */ | |
364 | static int automatic_hardware_breakpoints; | |
365 | static void | |
366 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
367 | struct cmd_list_element *c, | |
368 | const char *value) | |
369 | { | |
3e43a32a MS |
370 | fprintf_filtered (file, |
371 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
372 | value); |
373 | } | |
374 | ||
a25a5a45 PA |
375 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
376 | stopped, and immediately inserts any new breakpoints as soon as | |
377 | they're created. If off (default), GDB keeps breakpoints off of | |
378 | the target as long as possible. That is, it delays inserting | |
379 | breakpoints until the next resume, and removes them again when the | |
380 | target fully stops. This is a bit safer in case GDB crashes while | |
381 | processing user input. */ | |
382 | static int always_inserted_mode = 0; | |
72d0e2c5 | 383 | |
33e5cbd6 | 384 | static void |
74960c60 | 385 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 386 | struct cmd_list_element *c, const char *value) |
74960c60 | 387 | { |
a25a5a45 PA |
388 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
389 | value); | |
74960c60 VP |
390 | } |
391 | ||
b57bacec PA |
392 | /* See breakpoint.h. */ |
393 | ||
33e5cbd6 | 394 | int |
a25a5a45 | 395 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 396 | { |
a25a5a45 PA |
397 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
398 | { | |
399 | /* If breakpoints are global, they should be inserted even if no | |
400 | thread under gdb's control is running, or even if there are | |
401 | no threads under GDB's control yet. */ | |
402 | return 1; | |
403 | } | |
404 | else if (target_has_execution) | |
405 | { | |
372316f1 PA |
406 | struct thread_info *tp; |
407 | ||
a25a5a45 PA |
408 | if (always_inserted_mode) |
409 | { | |
410 | /* The user wants breakpoints inserted even if all threads | |
411 | are stopped. */ | |
412 | return 1; | |
413 | } | |
414 | ||
b57bacec PA |
415 | if (threads_are_executing ()) |
416 | return 1; | |
372316f1 PA |
417 | |
418 | /* Don't remove breakpoints yet if, even though all threads are | |
419 | stopped, we still have events to process. */ | |
420 | ALL_NON_EXITED_THREADS (tp) | |
421 | if (tp->resumed | |
422 | && tp->suspend.waitstatus_pending_p) | |
423 | return 1; | |
a25a5a45 PA |
424 | } |
425 | return 0; | |
33e5cbd6 | 426 | } |
765dc015 | 427 | |
b775012e LM |
428 | static const char condition_evaluation_both[] = "host or target"; |
429 | ||
430 | /* Modes for breakpoint condition evaluation. */ | |
431 | static const char condition_evaluation_auto[] = "auto"; | |
432 | static const char condition_evaluation_host[] = "host"; | |
433 | static const char condition_evaluation_target[] = "target"; | |
434 | static const char *const condition_evaluation_enums[] = { | |
435 | condition_evaluation_auto, | |
436 | condition_evaluation_host, | |
437 | condition_evaluation_target, | |
438 | NULL | |
439 | }; | |
440 | ||
441 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
442 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
443 | ||
444 | /* Global that we use to display information to the user (gets its value from | |
445 | condition_evaluation_mode_1. */ | |
446 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
447 | ||
448 | /* Translate a condition evaluation mode MODE into either "host" | |
449 | or "target". This is used mostly to translate from "auto" to the | |
450 | real setting that is being used. It returns the translated | |
451 | evaluation mode. */ | |
452 | ||
453 | static const char * | |
454 | translate_condition_evaluation_mode (const char *mode) | |
455 | { | |
456 | if (mode == condition_evaluation_auto) | |
457 | { | |
458 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
459 | return condition_evaluation_target; | |
460 | else | |
461 | return condition_evaluation_host; | |
462 | } | |
463 | else | |
464 | return mode; | |
465 | } | |
466 | ||
467 | /* Discovers what condition_evaluation_auto translates to. */ | |
468 | ||
469 | static const char * | |
470 | breakpoint_condition_evaluation_mode (void) | |
471 | { | |
472 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
473 | } | |
474 | ||
475 | /* Return true if GDB should evaluate breakpoint conditions or false | |
476 | otherwise. */ | |
477 | ||
478 | static int | |
479 | gdb_evaluates_breakpoint_condition_p (void) | |
480 | { | |
481 | const char *mode = breakpoint_condition_evaluation_mode (); | |
482 | ||
483 | return (mode == condition_evaluation_host); | |
484 | } | |
485 | ||
c906108c SS |
486 | /* Are we executing breakpoint commands? */ |
487 | static int executing_breakpoint_commands; | |
488 | ||
c02f5703 MS |
489 | /* Are overlay event breakpoints enabled? */ |
490 | static int overlay_events_enabled; | |
491 | ||
e09342b5 TJB |
492 | /* See description in breakpoint.h. */ |
493 | int target_exact_watchpoints = 0; | |
494 | ||
c906108c | 495 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 496 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 497 | current breakpoint. */ |
c906108c | 498 | |
5c44784c | 499 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 500 | |
5c44784c JM |
501 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
502 | for (B = breakpoint_chain; \ | |
503 | B ? (TMP=B->next, 1): 0; \ | |
504 | B = TMP) | |
c906108c | 505 | |
4a64f543 MS |
506 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
507 | not provided so update_global_location_list must not be called | |
508 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 509 | |
876fa593 | 510 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
511 | for (BP_TMP = bp_locations; \ |
512 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 513 | BP_TMP++) |
7cc221ef | 514 | |
b775012e LM |
515 | /* Iterates through locations with address ADDRESS for the currently selected |
516 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
517 | to where the loop should start from. | |
518 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
519 | appropriate location to start with. */ | |
520 | ||
521 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
522 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
523 | BP_LOCP_TMP = BP_LOCP_START; \ | |
524 | BP_LOCP_START \ | |
f5336ca5 | 525 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
526 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
527 | BP_LOCP_TMP++) | |
528 | ||
1042e4c0 SS |
529 | /* Iterator for tracepoints only. */ |
530 | ||
531 | #define ALL_TRACEPOINTS(B) \ | |
532 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 533 | if (is_tracepoint (B)) |
1042e4c0 | 534 | |
7cc221ef | 535 | /* Chains of all breakpoints defined. */ |
c906108c SS |
536 | |
537 | struct breakpoint *breakpoint_chain; | |
538 | ||
f5336ca5 | 539 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 540 | |
f5336ca5 | 541 | static struct bp_location **bp_locations; |
876fa593 | 542 | |
f5336ca5 | 543 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 544 | |
f5336ca5 | 545 | static unsigned bp_locations_count; |
876fa593 | 546 | |
4a64f543 | 547 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 548 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 549 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 550 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 551 | an address you need to read. */ |
876fa593 | 552 | |
f5336ca5 | 553 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 554 | |
4a64f543 MS |
555 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
556 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
557 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
558 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 559 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 560 | |
f5336ca5 | 561 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 562 | |
4a64f543 | 563 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
564 | from the bp_locations array, but for which a hit may still be |
565 | reported by a target. */ | |
20874c92 VP |
566 | VEC(bp_location_p) *moribund_locations = NULL; |
567 | ||
c906108c SS |
568 | /* Number of last breakpoint made. */ |
569 | ||
95a42b64 TT |
570 | static int breakpoint_count; |
571 | ||
86b17b60 PA |
572 | /* The value of `breakpoint_count' before the last command that |
573 | created breakpoints. If the last (break-like) command created more | |
574 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
575 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
576 | static int prev_breakpoint_count; | |
c906108c | 577 | |
1042e4c0 SS |
578 | /* Number of last tracepoint made. */ |
579 | ||
95a42b64 | 580 | static int tracepoint_count; |
1042e4c0 | 581 | |
6149aea9 PA |
582 | static struct cmd_list_element *breakpoint_set_cmdlist; |
583 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 584 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 585 | |
badd37ce SDJ |
586 | /* See declaration at breakpoint.h. */ |
587 | ||
588 | struct breakpoint * | |
589 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
590 | void *user_data) | |
591 | { | |
592 | struct breakpoint *b = NULL; | |
593 | ||
594 | ALL_BREAKPOINTS (b) | |
595 | { | |
596 | if (func (b, user_data) != 0) | |
597 | break; | |
598 | } | |
599 | ||
600 | return b; | |
601 | } | |
602 | ||
468d015d JJ |
603 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
604 | static int | |
605 | breakpoint_enabled (struct breakpoint *b) | |
606 | { | |
0d381245 | 607 | return (b->enable_state == bp_enabled); |
468d015d JJ |
608 | } |
609 | ||
c906108c SS |
610 | /* Set breakpoint count to NUM. */ |
611 | ||
95a42b64 | 612 | static void |
fba45db2 | 613 | set_breakpoint_count (int num) |
c906108c | 614 | { |
86b17b60 | 615 | prev_breakpoint_count = breakpoint_count; |
c906108c | 616 | breakpoint_count = num; |
4fa62494 | 617 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
618 | } |
619 | ||
86b17b60 PA |
620 | /* Used by `start_rbreak_breakpoints' below, to record the current |
621 | breakpoint count before "rbreak" creates any breakpoint. */ | |
622 | static int rbreak_start_breakpoint_count; | |
623 | ||
95a42b64 TT |
624 | /* Called at the start an "rbreak" command to record the first |
625 | breakpoint made. */ | |
86b17b60 | 626 | |
c80049d3 | 627 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 628 | { |
86b17b60 | 629 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
630 | } |
631 | ||
632 | /* Called at the end of an "rbreak" command to record the last | |
633 | breakpoint made. */ | |
86b17b60 | 634 | |
c80049d3 | 635 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 636 | { |
86b17b60 | 637 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
638 | } |
639 | ||
4a64f543 | 640 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
641 | |
642 | void | |
fba45db2 | 643 | clear_breakpoint_hit_counts (void) |
c906108c SS |
644 | { |
645 | struct breakpoint *b; | |
646 | ||
647 | ALL_BREAKPOINTS (b) | |
648 | b->hit_count = 0; | |
649 | } | |
650 | ||
c906108c | 651 | \f |
48cb2d85 VP |
652 | /* Return the breakpoint with the specified number, or NULL |
653 | if the number does not refer to an existing breakpoint. */ | |
654 | ||
655 | struct breakpoint * | |
656 | get_breakpoint (int num) | |
657 | { | |
658 | struct breakpoint *b; | |
659 | ||
660 | ALL_BREAKPOINTS (b) | |
661 | if (b->number == num) | |
662 | return b; | |
663 | ||
664 | return NULL; | |
665 | } | |
5c44784c | 666 | |
c906108c | 667 | \f |
adc36818 | 668 | |
b775012e LM |
669 | /* Mark locations as "conditions have changed" in case the target supports |
670 | evaluating conditions on its side. */ | |
671 | ||
672 | static void | |
673 | mark_breakpoint_modified (struct breakpoint *b) | |
674 | { | |
675 | struct bp_location *loc; | |
676 | ||
677 | /* This is only meaningful if the target is | |
678 | evaluating conditions and if the user has | |
679 | opted for condition evaluation on the target's | |
680 | side. */ | |
681 | if (gdb_evaluates_breakpoint_condition_p () | |
682 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
683 | return; | |
684 | ||
685 | if (!is_breakpoint (b)) | |
686 | return; | |
687 | ||
688 | for (loc = b->loc; loc; loc = loc->next) | |
689 | loc->condition_changed = condition_modified; | |
690 | } | |
691 | ||
692 | /* Mark location as "conditions have changed" in case the target supports | |
693 | evaluating conditions on its side. */ | |
694 | ||
695 | static void | |
696 | mark_breakpoint_location_modified (struct bp_location *loc) | |
697 | { | |
698 | /* This is only meaningful if the target is | |
699 | evaluating conditions and if the user has | |
700 | opted for condition evaluation on the target's | |
701 | side. */ | |
702 | if (gdb_evaluates_breakpoint_condition_p () | |
703 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
704 | ||
705 | return; | |
706 | ||
707 | if (!is_breakpoint (loc->owner)) | |
708 | return; | |
709 | ||
710 | loc->condition_changed = condition_modified; | |
711 | } | |
712 | ||
713 | /* Sets the condition-evaluation mode using the static global | |
714 | condition_evaluation_mode. */ | |
715 | ||
716 | static void | |
717 | set_condition_evaluation_mode (char *args, int from_tty, | |
718 | struct cmd_list_element *c) | |
719 | { | |
b775012e LM |
720 | const char *old_mode, *new_mode; |
721 | ||
722 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
723 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
724 | { | |
725 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
726 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
727 | "Using host evaluation mode instead.")); | |
728 | return; | |
729 | } | |
730 | ||
731 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
732 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
733 | ||
abf1152a JK |
734 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
735 | settings was "auto". */ | |
736 | condition_evaluation_mode = condition_evaluation_mode_1; | |
737 | ||
b775012e LM |
738 | /* Only update the mode if the user picked a different one. */ |
739 | if (new_mode != old_mode) | |
740 | { | |
741 | struct bp_location *loc, **loc_tmp; | |
742 | /* If the user switched to a different evaluation mode, we | |
743 | need to synch the changes with the target as follows: | |
744 | ||
745 | "host" -> "target": Send all (valid) conditions to the target. | |
746 | "target" -> "host": Remove all the conditions from the target. | |
747 | */ | |
748 | ||
b775012e LM |
749 | if (new_mode == condition_evaluation_target) |
750 | { | |
751 | /* Mark everything modified and synch conditions with the | |
752 | target. */ | |
753 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
754 | mark_breakpoint_location_modified (loc); | |
755 | } | |
756 | else | |
757 | { | |
758 | /* Manually mark non-duplicate locations to synch conditions | |
759 | with the target. We do this to remove all the conditions the | |
760 | target knows about. */ | |
761 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
762 | if (is_breakpoint (loc->owner) && loc->inserted) | |
763 | loc->needs_update = 1; | |
764 | } | |
765 | ||
766 | /* Do the update. */ | |
44702360 | 767 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
768 | } |
769 | ||
770 | return; | |
771 | } | |
772 | ||
773 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
774 | what "auto" is translating to. */ | |
775 | ||
776 | static void | |
777 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
778 | struct cmd_list_element *c, const char *value) | |
779 | { | |
780 | if (condition_evaluation_mode == condition_evaluation_auto) | |
781 | fprintf_filtered (file, | |
782 | _("Breakpoint condition evaluation " | |
783 | "mode is %s (currently %s).\n"), | |
784 | value, | |
785 | breakpoint_condition_evaluation_mode ()); | |
786 | else | |
787 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
788 | value); | |
789 | } | |
790 | ||
791 | /* A comparison function for bp_location AP and BP that is used by | |
792 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 793 | the more general bp_locations_compare function. */ |
b775012e LM |
794 | |
795 | static int | |
f5336ca5 | 796 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 797 | { |
9a3c8263 SM |
798 | const struct bp_location *a = *(const struct bp_location **) ap; |
799 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
800 | |
801 | if (a->address == b->address) | |
802 | return 0; | |
803 | else | |
804 | return ((a->address > b->address) - (a->address < b->address)); | |
805 | } | |
806 | ||
807 | /* Helper function to skip all bp_locations with addresses | |
808 | less than ADDRESS. It returns the first bp_location that | |
809 | is greater than or equal to ADDRESS. If none is found, just | |
810 | return NULL. */ | |
811 | ||
812 | static struct bp_location ** | |
813 | get_first_locp_gte_addr (CORE_ADDR address) | |
814 | { | |
815 | struct bp_location dummy_loc; | |
816 | struct bp_location *dummy_locp = &dummy_loc; | |
817 | struct bp_location **locp_found = NULL; | |
818 | ||
819 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
820 | dummy_loc.address = address; |
821 | ||
822 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 823 | locp_found = ((struct bp_location **) |
f5336ca5 | 824 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 825 | sizeof (struct bp_location **), |
f5336ca5 | 826 | bp_locations_compare_addrs)); |
b775012e LM |
827 | |
828 | /* Nothing was found, nothing left to do. */ | |
829 | if (locp_found == NULL) | |
830 | return NULL; | |
831 | ||
832 | /* We may have found a location that is at ADDRESS but is not the first in the | |
833 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 834 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
835 | && (*(locp_found - 1))->address == address) |
836 | locp_found--; | |
837 | ||
838 | return locp_found; | |
839 | } | |
840 | ||
adc36818 | 841 | void |
7a26bd4d | 842 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
843 | int from_tty) |
844 | { | |
3a5c3e22 PA |
845 | xfree (b->cond_string); |
846 | b->cond_string = NULL; | |
adc36818 | 847 | |
3a5c3e22 | 848 | if (is_watchpoint (b)) |
adc36818 | 849 | { |
3a5c3e22 PA |
850 | struct watchpoint *w = (struct watchpoint *) b; |
851 | ||
4d01a485 | 852 | w->cond_exp.reset (); |
3a5c3e22 PA |
853 | } |
854 | else | |
855 | { | |
856 | struct bp_location *loc; | |
857 | ||
858 | for (loc = b->loc; loc; loc = loc->next) | |
859 | { | |
4d01a485 | 860 | loc->cond.reset (); |
b775012e LM |
861 | |
862 | /* No need to free the condition agent expression | |
863 | bytecode (if we have one). We will handle this | |
864 | when we go through update_global_location_list. */ | |
3a5c3e22 | 865 | } |
adc36818 | 866 | } |
adc36818 PM |
867 | |
868 | if (*exp == 0) | |
869 | { | |
870 | if (from_tty) | |
871 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
872 | } | |
873 | else | |
874 | { | |
bbc13ae3 | 875 | const char *arg = exp; |
cc59ec59 | 876 | |
adc36818 PM |
877 | /* I don't know if it matters whether this is the string the user |
878 | typed in or the decompiled expression. */ | |
879 | b->cond_string = xstrdup (arg); | |
880 | b->condition_not_parsed = 0; | |
881 | ||
882 | if (is_watchpoint (b)) | |
883 | { | |
3a5c3e22 PA |
884 | struct watchpoint *w = (struct watchpoint *) b; |
885 | ||
adc36818 PM |
886 | innermost_block = NULL; |
887 | arg = exp; | |
1bb9788d | 888 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
889 | if (*arg) |
890 | error (_("Junk at end of expression")); | |
3a5c3e22 | 891 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
892 | } |
893 | else | |
894 | { | |
3a5c3e22 PA |
895 | struct bp_location *loc; |
896 | ||
adc36818 PM |
897 | for (loc = b->loc; loc; loc = loc->next) |
898 | { | |
899 | arg = exp; | |
900 | loc->cond = | |
1bb9788d TT |
901 | parse_exp_1 (&arg, loc->address, |
902 | block_for_pc (loc->address), 0); | |
adc36818 PM |
903 | if (*arg) |
904 | error (_("Junk at end of expression")); | |
905 | } | |
906 | } | |
907 | } | |
b775012e LM |
908 | mark_breakpoint_modified (b); |
909 | ||
8d3788bd | 910 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
911 | } |
912 | ||
d55637df TT |
913 | /* Completion for the "condition" command. */ |
914 | ||
eb3ff9a5 | 915 | static void |
6f937416 | 916 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 917 | completion_tracker &tracker, |
6f937416 | 918 | const char *text, const char *word) |
d55637df | 919 | { |
6f937416 | 920 | const char *space; |
d55637df | 921 | |
f1735a53 TT |
922 | text = skip_spaces (text); |
923 | space = skip_to_space (text); | |
d55637df TT |
924 | if (*space == '\0') |
925 | { | |
926 | int len; | |
927 | struct breakpoint *b; | |
928 | VEC (char_ptr) *result = NULL; | |
929 | ||
930 | if (text[0] == '$') | |
931 | { | |
932 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
933 | if (!isdigit (text[1])) |
934 | complete_internalvar (tracker, &text[1]); | |
935 | return; | |
d55637df TT |
936 | } |
937 | ||
938 | /* We're completing the breakpoint number. */ | |
939 | len = strlen (text); | |
940 | ||
941 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
942 | { |
943 | char number[50]; | |
944 | ||
945 | xsnprintf (number, sizeof (number), "%d", b->number); | |
946 | ||
947 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
948 | { |
949 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
950 | tracker.add_completion (std::move (copy)); | |
951 | } | |
58ce7251 | 952 | } |
d55637df | 953 | |
eb3ff9a5 | 954 | return; |
d55637df TT |
955 | } |
956 | ||
957 | /* We're completing the expression part. */ | |
f1735a53 | 958 | text = skip_spaces (space); |
eb3ff9a5 | 959 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
960 | } |
961 | ||
c906108c SS |
962 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
963 | ||
964 | static void | |
0b39b52e | 965 | condition_command (const char *arg, int from_tty) |
c906108c | 966 | { |
52f0bd74 | 967 | struct breakpoint *b; |
0b39b52e | 968 | const char *p; |
52f0bd74 | 969 | int bnum; |
c906108c SS |
970 | |
971 | if (arg == 0) | |
e2e0b3e5 | 972 | error_no_arg (_("breakpoint number")); |
c906108c SS |
973 | |
974 | p = arg; | |
975 | bnum = get_number (&p); | |
5c44784c | 976 | if (bnum == 0) |
8a3fe4f8 | 977 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
978 | |
979 | ALL_BREAKPOINTS (b) | |
980 | if (b->number == bnum) | |
2f069f6f | 981 | { |
6dddc817 DE |
982 | /* Check if this breakpoint has a "stop" method implemented in an |
983 | extension language. This method and conditions entered into GDB | |
984 | from the CLI are mutually exclusive. */ | |
985 | const struct extension_language_defn *extlang | |
986 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
987 | ||
988 | if (extlang != NULL) | |
989 | { | |
990 | error (_("Only one stop condition allowed. There is currently" | |
991 | " a %s stop condition defined for this breakpoint."), | |
992 | ext_lang_capitalized_name (extlang)); | |
993 | } | |
2566ad2d | 994 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
995 | |
996 | if (is_breakpoint (b)) | |
44702360 | 997 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 998 | |
2f069f6f JB |
999 | return; |
1000 | } | |
c906108c | 1001 | |
8a3fe4f8 | 1002 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1003 | } |
1004 | ||
a7bdde9e VP |
1005 | /* Check that COMMAND do not contain commands that are suitable |
1006 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1007 | Throw if any such commands is found. */ |
1008 | ||
a7bdde9e VP |
1009 | static void |
1010 | check_no_tracepoint_commands (struct command_line *commands) | |
1011 | { | |
1012 | struct command_line *c; | |
cc59ec59 | 1013 | |
a7bdde9e VP |
1014 | for (c = commands; c; c = c->next) |
1015 | { | |
1016 | int i; | |
1017 | ||
1018 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1019 | error (_("The 'while-stepping' command can " |
1020 | "only be used for tracepoints")); | |
a7bdde9e VP |
1021 | |
1022 | for (i = 0; i < c->body_count; ++i) | |
1023 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1024 | ||
1025 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1026 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1027 | command directly. */ |
1028 | if (strstr (c->line, "collect ") == c->line) | |
1029 | error (_("The 'collect' command can only be used for tracepoints")); | |
1030 | ||
51661e93 VP |
1031 | if (strstr (c->line, "teval ") == c->line) |
1032 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1033 | } |
1034 | } | |
1035 | ||
c1fc2657 | 1036 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1037 | { |
c1fc2657 | 1038 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1039 | }; |
1040 | ||
d77f58be SS |
1041 | /* Encapsulate tests for different types of tracepoints. */ |
1042 | ||
3b0871f4 SM |
1043 | static bool |
1044 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1045 | { |
1046 | return (type == bp_tracepoint | |
1047 | || type == bp_fast_tracepoint | |
1048 | || type == bp_static_tracepoint); | |
1049 | } | |
1050 | ||
3b0871f4 SM |
1051 | static bool |
1052 | is_longjmp_type (bptype type) | |
1053 | { | |
1054 | return type == bp_longjmp || type == bp_exception; | |
1055 | } | |
1056 | ||
a7bdde9e | 1057 | int |
d77f58be | 1058 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1059 | { |
d9b3f62e | 1060 | return is_tracepoint_type (b->type); |
a7bdde9e | 1061 | } |
d9b3f62e | 1062 | |
a5e364af SM |
1063 | /* Factory function to create an appropriate instance of breakpoint given |
1064 | TYPE. */ | |
1065 | ||
1066 | static std::unique_ptr<breakpoint> | |
1067 | new_breakpoint_from_type (bptype type) | |
1068 | { | |
1069 | breakpoint *b; | |
1070 | ||
1071 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1072 | b = new tracepoint (); |
3b0871f4 | 1073 | else if (is_longjmp_type (type)) |
c1fc2657 | 1074 | b = new longjmp_breakpoint (); |
a5e364af SM |
1075 | else |
1076 | b = new breakpoint (); | |
1077 | ||
1078 | return std::unique_ptr<breakpoint> (b); | |
1079 | } | |
1080 | ||
e5dd4106 | 1081 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1082 | breakpoint. This function will throw an exception if a problem is |
1083 | found. */ | |
48cb2d85 | 1084 | |
95a42b64 TT |
1085 | static void |
1086 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1087 | struct command_line *commands) | |
48cb2d85 | 1088 | { |
d77f58be | 1089 | if (is_tracepoint (b)) |
a7bdde9e | 1090 | { |
c9a6ce02 | 1091 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1092 | struct command_line *c; |
1093 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1094 | |
1095 | /* Reset the while-stepping step count. The previous commands | |
1096 | might have included a while-stepping action, while the new | |
1097 | ones might not. */ | |
1098 | t->step_count = 0; | |
1099 | ||
1100 | /* We need to verify that each top-level element of commands is | |
1101 | valid for tracepoints, that there's at most one | |
1102 | while-stepping element, and that the while-stepping's body | |
1103 | has valid tracing commands excluding nested while-stepping. | |
1104 | We also need to validate the tracepoint action line in the | |
1105 | context of the tracepoint --- validate_actionline actually | |
1106 | has side effects, like setting the tracepoint's | |
1107 | while-stepping STEP_COUNT, in addition to checking if the | |
1108 | collect/teval actions parse and make sense in the | |
1109 | tracepoint's context. */ | |
a7bdde9e VP |
1110 | for (c = commands; c; c = c->next) |
1111 | { | |
a7bdde9e VP |
1112 | if (c->control_type == while_stepping_control) |
1113 | { | |
1114 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1115 | error (_("The 'while-stepping' command " |
1116 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1117 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1118 | error (_("The 'while-stepping' command " |
1119 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1120 | |
1121 | if (while_stepping) | |
3e43a32a MS |
1122 | error (_("The 'while-stepping' command " |
1123 | "can be used only once")); | |
a7bdde9e VP |
1124 | else |
1125 | while_stepping = c; | |
1126 | } | |
c9a6ce02 PA |
1127 | |
1128 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1129 | } |
1130 | if (while_stepping) | |
1131 | { | |
1132 | struct command_line *c2; | |
1133 | ||
1134 | gdb_assert (while_stepping->body_count == 1); | |
1135 | c2 = while_stepping->body_list[0]; | |
1136 | for (; c2; c2 = c2->next) | |
1137 | { | |
a7bdde9e VP |
1138 | if (c2->control_type == while_stepping_control) |
1139 | error (_("The 'while-stepping' command cannot be nested")); | |
1140 | } | |
1141 | } | |
1142 | } | |
1143 | else | |
1144 | { | |
1145 | check_no_tracepoint_commands (commands); | |
1146 | } | |
95a42b64 TT |
1147 | } |
1148 | ||
0fb4aa4b PA |
1149 | /* Return a vector of all the static tracepoints set at ADDR. The |
1150 | caller is responsible for releasing the vector. */ | |
1151 | ||
1152 | VEC(breakpoint_p) * | |
1153 | static_tracepoints_here (CORE_ADDR addr) | |
1154 | { | |
1155 | struct breakpoint *b; | |
1156 | VEC(breakpoint_p) *found = 0; | |
1157 | struct bp_location *loc; | |
1158 | ||
1159 | ALL_BREAKPOINTS (b) | |
1160 | if (b->type == bp_static_tracepoint) | |
1161 | { | |
1162 | for (loc = b->loc; loc; loc = loc->next) | |
1163 | if (loc->address == addr) | |
1164 | VEC_safe_push(breakpoint_p, found, b); | |
1165 | } | |
1166 | ||
1167 | return found; | |
1168 | } | |
1169 | ||
95a42b64 | 1170 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1171 | validate that only allowed commands are included. */ |
95a42b64 TT |
1172 | |
1173 | void | |
4a64f543 | 1174 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1175 | command_line_up &&commands) |
95a42b64 | 1176 | { |
93921405 | 1177 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1178 | |
d1b0a7bf | 1179 | b->commands = std::move (commands); |
8d3788bd | 1180 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1181 | } |
1182 | ||
45a43567 TT |
1183 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1184 | is not the same as the "silent" that may appear in the breakpoint's | |
1185 | commands. */ | |
1186 | ||
1187 | void | |
1188 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1189 | { | |
1190 | int old_silent = b->silent; | |
1191 | ||
1192 | b->silent = silent; | |
1193 | if (old_silent != silent) | |
8d3788bd | 1194 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1195 | } |
1196 | ||
1197 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1198 | breakpoint work for any thread. */ | |
1199 | ||
1200 | void | |
1201 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1202 | { | |
1203 | int old_thread = b->thread; | |
1204 | ||
1205 | b->thread = thread; | |
1206 | if (old_thread != thread) | |
8d3788bd | 1207 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1208 | } |
1209 | ||
1210 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1211 | breakpoint work for any task. */ | |
1212 | ||
1213 | void | |
1214 | breakpoint_set_task (struct breakpoint *b, int task) | |
1215 | { | |
1216 | int old_task = b->task; | |
1217 | ||
1218 | b->task = task; | |
1219 | if (old_task != task) | |
8d3788bd | 1220 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1221 | } |
1222 | ||
95a42b64 TT |
1223 | void |
1224 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1225 | { |
9a3c8263 | 1226 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1227 | |
6f937416 | 1228 | validate_actionline (line, b); |
a7bdde9e VP |
1229 | } |
1230 | ||
95a42b64 | 1231 | static void |
896b6bda | 1232 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1233 | struct command_line *control) |
95a42b64 | 1234 | { |
d1b0a7bf | 1235 | counted_command_line cmd; |
95a42b64 | 1236 | |
896b6bda PA |
1237 | std::string new_arg; |
1238 | ||
95a42b64 TT |
1239 | if (arg == NULL || !*arg) |
1240 | { | |
86b17b60 | 1241 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1242 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1243 | breakpoint_count); | |
95a42b64 | 1244 | else if (breakpoint_count > 0) |
896b6bda | 1245 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1246 | arg = new_arg.c_str (); |
1247 | } | |
1248 | ||
1249 | map_breakpoint_numbers | |
1250 | (arg, [&] (breakpoint *b) | |
1251 | { | |
1252 | if (cmd == NULL) | |
1253 | { | |
48649e1b | 1254 | if (control != NULL) |
d1b0a7bf | 1255 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1256 | else |
1257 | { | |
81b1e71c TT |
1258 | std::string str |
1259 | = string_printf (_("Type commands for breakpoint(s) " | |
1260 | "%s, one per line."), | |
1261 | arg); | |
48649e1b | 1262 | |
81b1e71c | 1263 | cmd = read_command_lines (&str[0], |
d1b0a7bf TT |
1264 | from_tty, 1, |
1265 | (is_tracepoint (b) | |
1266 | ? check_tracepoint_command : 0), | |
1267 | b); | |
48649e1b | 1268 | } |
48649e1b TT |
1269 | } |
1270 | ||
1271 | /* If a breakpoint was on the list more than once, we don't need to | |
1272 | do anything. */ | |
1273 | if (b->commands != cmd) | |
1274 | { | |
d1b0a7bf | 1275 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1276 | b->commands = cmd; |
1277 | observer_notify_breakpoint_modified (b); | |
1278 | } | |
1279 | }); | |
95a42b64 | 1280 | |
48649e1b | 1281 | if (cmd == NULL) |
95a42b64 | 1282 | error (_("No breakpoints specified.")); |
95a42b64 TT |
1283 | } |
1284 | ||
1285 | static void | |
0b39b52e | 1286 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1287 | { |
1288 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1289 | } |
40c03ae8 EZ |
1290 | |
1291 | /* Like commands_command, but instead of reading the commands from | |
1292 | input stream, takes them from an already parsed command structure. | |
1293 | ||
1294 | This is used by cli-script.c to DTRT with breakpoint commands | |
1295 | that are part of if and while bodies. */ | |
1296 | enum command_control_type | |
896b6bda | 1297 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1298 | { |
95a42b64 TT |
1299 | commands_command_1 (arg, 0, cmd); |
1300 | return simple_control; | |
40c03ae8 | 1301 | } |
876fa593 JK |
1302 | |
1303 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1304 | ||
1305 | static int | |
1306 | bp_location_has_shadow (struct bp_location *bl) | |
1307 | { | |
1308 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1309 | return 0; | |
1310 | if (!bl->inserted) | |
1311 | return 0; | |
1312 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1313 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1314 | return 0; |
1315 | return 1; | |
1316 | } | |
1317 | ||
9d497a19 PA |
1318 | /* Update BUF, which is LEN bytes read from the target address |
1319 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1320 | contents. | |
1321 | ||
1322 | If READBUF is not NULL, this buffer must not overlap with the of | |
1323 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1324 | failed assertion internal error will be raised. */ | |
1325 | ||
1326 | static void | |
1327 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1328 | const gdb_byte *writebuf_org, | |
1329 | ULONGEST memaddr, LONGEST len, | |
1330 | struct bp_target_info *target_info, | |
1331 | struct gdbarch *gdbarch) | |
1332 | { | |
1333 | /* Now do full processing of the found relevant range of elements. */ | |
1334 | CORE_ADDR bp_addr = 0; | |
1335 | int bp_size = 0; | |
1336 | int bptoffset = 0; | |
1337 | ||
1338 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1339 | current_program_space->aspace, 0)) | |
1340 | { | |
1341 | /* The breakpoint is inserted in a different address space. */ | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | /* Addresses and length of the part of the breakpoint that | |
1346 | we need to copy. */ | |
1347 | bp_addr = target_info->placed_address; | |
1348 | bp_size = target_info->shadow_len; | |
1349 | ||
1350 | if (bp_addr + bp_size <= memaddr) | |
1351 | { | |
1352 | /* The breakpoint is entirely before the chunk of memory we are | |
1353 | reading. */ | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | if (bp_addr >= memaddr + len) | |
1358 | { | |
1359 | /* The breakpoint is entirely after the chunk of memory we are | |
1360 | reading. */ | |
1361 | return; | |
1362 | } | |
1363 | ||
1364 | /* Offset within shadow_contents. */ | |
1365 | if (bp_addr < memaddr) | |
1366 | { | |
1367 | /* Only copy the second part of the breakpoint. */ | |
1368 | bp_size -= memaddr - bp_addr; | |
1369 | bptoffset = memaddr - bp_addr; | |
1370 | bp_addr = memaddr; | |
1371 | } | |
1372 | ||
1373 | if (bp_addr + bp_size > memaddr + len) | |
1374 | { | |
1375 | /* Only copy the first part of the breakpoint. */ | |
1376 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1377 | } | |
1378 | ||
1379 | if (readbuf != NULL) | |
1380 | { | |
1381 | /* Verify that the readbuf buffer does not overlap with the | |
1382 | shadow_contents buffer. */ | |
1383 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1384 | || readbuf >= (target_info->shadow_contents | |
1385 | + target_info->shadow_len)); | |
1386 | ||
1387 | /* Update the read buffer with this inserted breakpoint's | |
1388 | shadow. */ | |
1389 | memcpy (readbuf + bp_addr - memaddr, | |
1390 | target_info->shadow_contents + bptoffset, bp_size); | |
1391 | } | |
1392 | else | |
1393 | { | |
1394 | const unsigned char *bp; | |
0d5ed153 MR |
1395 | CORE_ADDR addr = target_info->reqstd_address; |
1396 | int placed_size; | |
9d497a19 PA |
1397 | |
1398 | /* Update the shadow with what we want to write to memory. */ | |
1399 | memcpy (target_info->shadow_contents + bptoffset, | |
1400 | writebuf_org + bp_addr - memaddr, bp_size); | |
1401 | ||
1402 | /* Determine appropriate breakpoint contents and size for this | |
1403 | address. */ | |
0d5ed153 | 1404 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1405 | |
1406 | /* Update the final write buffer with this inserted | |
1407 | breakpoint's INSN. */ | |
1408 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1409 | } | |
1410 | } | |
1411 | ||
8defab1a | 1412 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1413 | by replacing any memory breakpoints with their shadowed contents. |
1414 | ||
35c63cd8 JB |
1415 | If READBUF is not NULL, this buffer must not overlap with any of |
1416 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1417 | a failed assertion internal error will be raised. | |
1418 | ||
876fa593 | 1419 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1420 | bl->address - bp_locations_placed_address_before_address_max |
1421 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1422 | The range we were requested to resolve shadows for is: |
1423 | memaddr ... memaddr + len | |
1424 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1425 | memaddr + len <= (bl->address |
f5336ca5 | 1426 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1427 | and: |
f5336ca5 | 1428 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1429 | |
8defab1a | 1430 | void |
f0ba3972 PA |
1431 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1432 | const gdb_byte *writebuf_org, | |
1433 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1434 | { |
4a64f543 MS |
1435 | /* Left boundary, right boundary and median element of our binary |
1436 | search. */ | |
876fa593 JK |
1437 | unsigned bc_l, bc_r, bc; |
1438 | ||
4a64f543 MS |
1439 | /* Find BC_L which is a leftmost element which may affect BUF |
1440 | content. It is safe to report lower value but a failure to | |
1441 | report higher one. */ | |
876fa593 JK |
1442 | |
1443 | bc_l = 0; | |
f5336ca5 | 1444 | bc_r = bp_locations_count; |
876fa593 JK |
1445 | while (bc_l + 1 < bc_r) |
1446 | { | |
35df4500 | 1447 | struct bp_location *bl; |
876fa593 JK |
1448 | |
1449 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1450 | bl = bp_locations[bc]; |
876fa593 | 1451 | |
4a64f543 MS |
1452 | /* Check first BL->ADDRESS will not overflow due to the added |
1453 | constant. Then advance the left boundary only if we are sure | |
1454 | the BC element can in no way affect the BUF content (MEMADDR | |
1455 | to MEMADDR + LEN range). | |
876fa593 | 1456 | |
f5336ca5 | 1457 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1458 | offset so that we cannot miss a breakpoint with its shadow |
1459 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1460 | |
f5336ca5 | 1461 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1462 | >= bl->address) |
f5336ca5 | 1463 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1464 | <= memaddr)) |
876fa593 JK |
1465 | bc_l = bc; |
1466 | else | |
1467 | bc_r = bc; | |
1468 | } | |
1469 | ||
128070bb PA |
1470 | /* Due to the binary search above, we need to make sure we pick the |
1471 | first location that's at BC_L's address. E.g., if there are | |
1472 | multiple locations at the same address, BC_L may end up pointing | |
1473 | at a duplicate location, and miss the "master"/"inserted" | |
1474 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1475 | B: | |
1476 | ||
1477 | L1@A, L2@A, L3@B, ... | |
1478 | ||
1479 | BC_L could end up pointing at location L2, while the "master" | |
1480 | location could be L1. Since the `loc->inserted' flag is only set | |
1481 | on "master" locations, we'd forget to restore the shadow of L1 | |
1482 | and L2. */ | |
1483 | while (bc_l > 0 | |
f5336ca5 | 1484 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1485 | bc_l--; |
1486 | ||
876fa593 JK |
1487 | /* Now do full processing of the found relevant range of elements. */ |
1488 | ||
f5336ca5 | 1489 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1490 | { |
f5336ca5 | 1491 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1492 | |
35df4500 TJB |
1493 | /* bp_location array has BL->OWNER always non-NULL. */ |
1494 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1495 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1496 | bl->owner->number); |
ffce0d52 | 1497 | |
e5dd4106 | 1498 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1499 | content. */ |
1500 | ||
f5336ca5 PA |
1501 | if (bl->address >= bp_locations_placed_address_before_address_max |
1502 | && memaddr + len <= (bl->address | |
1503 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1504 | break; |
1505 | ||
35df4500 | 1506 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1507 | continue; |
6c95b8df | 1508 | |
9d497a19 PA |
1509 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1510 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1511 | } | |
c906108c | 1512 | } |
9d497a19 | 1513 | |
c906108c | 1514 | \f |
c5aa993b | 1515 | |
b775012e LM |
1516 | /* Return true if BPT is either a software breakpoint or a hardware |
1517 | breakpoint. */ | |
1518 | ||
1519 | int | |
1520 | is_breakpoint (const struct breakpoint *bpt) | |
1521 | { | |
1522 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1523 | || bpt->type == bp_hardware_breakpoint |
1524 | || bpt->type == bp_dprintf); | |
b775012e LM |
1525 | } |
1526 | ||
60e1c644 PA |
1527 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1528 | ||
a5606eee | 1529 | static int |
d77f58be | 1530 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1531 | { |
1532 | return (bpt->type == bp_hardware_watchpoint | |
1533 | || bpt->type == bp_read_watchpoint | |
1534 | || bpt->type == bp_access_watchpoint); | |
1535 | } | |
7270d8f2 | 1536 | |
60e1c644 PA |
1537 | /* Return true if BPT is of any watchpoint kind, hardware or |
1538 | software. */ | |
1539 | ||
3a5c3e22 | 1540 | int |
d77f58be | 1541 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1542 | { |
1543 | return (is_hardware_watchpoint (bpt) | |
1544 | || bpt->type == bp_watchpoint); | |
1545 | } | |
1546 | ||
3a5c3e22 PA |
1547 | /* Returns true if the current thread and its running state are safe |
1548 | to evaluate or update watchpoint B. Watchpoints on local | |
1549 | expressions need to be evaluated in the context of the thread that | |
1550 | was current when the watchpoint was created, and, that thread needs | |
1551 | to be stopped to be able to select the correct frame context. | |
1552 | Watchpoints on global expressions can be evaluated on any thread, | |
1553 | and in any state. It is presently left to the target allowing | |
1554 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1555 | |
1556 | static int | |
3a5c3e22 | 1557 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1558 | { |
c1fc2657 | 1559 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1560 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1561 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1562 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1563 | } |
1564 | ||
d0fb5eae JK |
1565 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1566 | associated bp_watchpoint_scope breakpoint. */ | |
1567 | ||
1568 | static void | |
3a5c3e22 | 1569 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1570 | { |
c1fc2657 | 1571 | if (w->related_breakpoint != w) |
d0fb5eae | 1572 | { |
c1fc2657 SM |
1573 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1574 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1575 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1576 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1577 | w->related_breakpoint = w; | |
d0fb5eae | 1578 | } |
c1fc2657 | 1579 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1580 | } |
1581 | ||
bb9d5f81 PP |
1582 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1583 | watchpoint W. */ | |
1584 | ||
1585 | static struct value * | |
1586 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1587 | { | |
1588 | struct value *bit_val; | |
1589 | ||
1590 | if (val == NULL) | |
1591 | return NULL; | |
1592 | ||
1593 | bit_val = allocate_value (value_type (val)); | |
1594 | ||
1595 | unpack_value_bitfield (bit_val, | |
1596 | w->val_bitpos, | |
1597 | w->val_bitsize, | |
1598 | value_contents_for_printing (val), | |
1599 | value_offset (val), | |
1600 | val); | |
1601 | ||
1602 | return bit_val; | |
1603 | } | |
1604 | ||
c6d81124 PA |
1605 | /* Allocate a dummy location and add it to B, which must be a software |
1606 | watchpoint. This is required because even if a software watchpoint | |
1607 | is not watching any memory, bpstat_stop_status requires a location | |
1608 | to be able to report stops. */ | |
1609 | ||
1610 | static void | |
1611 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1612 | struct program_space *pspace) | |
1613 | { | |
1614 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1615 | ||
1616 | b->loc = allocate_bp_location (b); | |
1617 | b->loc->pspace = pspace; | |
1618 | b->loc->address = -1; | |
1619 | b->loc->length = -1; | |
1620 | } | |
1621 | ||
1622 | /* Returns true if B is a software watchpoint that is not watching any | |
1623 | memory (e.g., "watch $pc"). */ | |
1624 | ||
1625 | static int | |
1626 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1627 | { | |
1628 | return (b->type == bp_watchpoint | |
1629 | && b->loc != NULL | |
1630 | && b->loc->next == NULL | |
1631 | && b->loc->address == -1 | |
1632 | && b->loc->length == -1); | |
1633 | } | |
1634 | ||
567e1b4e JB |
1635 | /* Assuming that B is a watchpoint: |
1636 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1637 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1638 | - Evaluate the condition if there is one, and store the result |
1639 | in b->loc->cond. | |
a5606eee VP |
1640 | - Update the list of values that must be watched in B->loc. |
1641 | ||
4a64f543 MS |
1642 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1643 | nothing. If this is local watchpoint that is out of scope, delete | |
1644 | it. | |
1645 | ||
1646 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1647 | removed + inserted on each stop here. Normal breakpoints must | |
1648 | never be removed because they might be missed by a running thread | |
1649 | when debugging in non-stop mode. On the other hand, hardware | |
1650 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1651 | to each LWP since they are stored in each LWP's hardware debug | |
1652 | registers. Therefore, such LWP must be stopped first in order to | |
1653 | be able to modify its hardware watchpoints. | |
1654 | ||
1655 | Hardware watchpoints must be reset exactly once after being | |
1656 | presented to the user. It cannot be done sooner, because it would | |
1657 | reset the data used to present the watchpoint hit to the user. And | |
1658 | it must not be done later because it could display the same single | |
1659 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1660 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1661 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1662 | not user-visible - its hit is suppressed if the memory content has | |
1663 | not changed. | |
1664 | ||
1665 | The following constraints influence the location where we can reset | |
1666 | hardware watchpoints: | |
1667 | ||
1668 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1669 | called several times when GDB stops. | |
1670 | ||
1671 | [linux] | |
1672 | * Multiple hardware watchpoints can be hit at the same time, | |
1673 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1674 | hit at a time as the reason for stopping, and all the other hits | |
1675 | are presented later, one after the other, each time the user | |
1676 | requests the execution to be resumed. Execution is not resumed | |
1677 | for the threads still having pending hit event stored in | |
1678 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1679 | the inferior on the first stop the thread hit event is kept being | |
1680 | reported from its cached value by linux_nat_stopped_data_address | |
1681 | until the real thread resume happens after the watchpoint gets | |
1682 | presented and thus its LWP_INFO->STATUS gets reset. | |
1683 | ||
1684 | Therefore the hardware watchpoint hit can get safely reset on the | |
1685 | watchpoint removal from inferior. */ | |
a79d3c27 | 1686 | |
b40ce68a | 1687 | static void |
3a5c3e22 | 1688 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1689 | { |
a5606eee | 1690 | int within_current_scope; |
a5606eee | 1691 | struct frame_id saved_frame_id; |
66076460 | 1692 | int frame_saved; |
a5606eee | 1693 | |
f6bc2008 PA |
1694 | /* If this is a local watchpoint, we only want to check if the |
1695 | watchpoint frame is in scope if the current thread is the thread | |
1696 | that was used to create the watchpoint. */ | |
1697 | if (!watchpoint_in_thread_scope (b)) | |
1698 | return; | |
1699 | ||
c1fc2657 | 1700 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1701 | return; |
1702 | ||
66076460 | 1703 | frame_saved = 0; |
a5606eee VP |
1704 | |
1705 | /* Determine if the watchpoint is within scope. */ | |
1706 | if (b->exp_valid_block == NULL) | |
1707 | within_current_scope = 1; | |
1708 | else | |
1709 | { | |
b5db5dfc UW |
1710 | struct frame_info *fi = get_current_frame (); |
1711 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1712 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1713 | ||
c9cf6e20 MG |
1714 | /* If we're at a point where the stack has been destroyed |
1715 | (e.g. in a function epilogue), unwinding may not work | |
1716 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1717 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1718 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1719 | return; |
66076460 DJ |
1720 | |
1721 | /* Save the current frame's ID so we can restore it after | |
1722 | evaluating the watchpoint expression on its own frame. */ | |
1723 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1724 | took a frame parameter, so that we didn't have to change the | |
1725 | selected frame. */ | |
1726 | frame_saved = 1; | |
1727 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1728 | ||
a5606eee VP |
1729 | fi = frame_find_by_id (b->watchpoint_frame); |
1730 | within_current_scope = (fi != NULL); | |
1731 | if (within_current_scope) | |
1732 | select_frame (fi); | |
1733 | } | |
1734 | ||
b5db5dfc UW |
1735 | /* We don't free locations. They are stored in the bp_location array |
1736 | and update_global_location_list will eventually delete them and | |
1737 | remove breakpoints if needed. */ | |
c1fc2657 | 1738 | b->loc = NULL; |
b5db5dfc | 1739 | |
a5606eee VP |
1740 | if (within_current_scope && reparse) |
1741 | { | |
bbc13ae3 | 1742 | const char *s; |
d63d0675 | 1743 | |
4d01a485 | 1744 | b->exp.reset (); |
d63d0675 | 1745 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1746 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1747 | /* If the meaning of expression itself changed, the old value is |
1748 | no longer relevant. We don't want to report a watchpoint hit | |
1749 | to the user when the old value and the new value may actually | |
1750 | be completely different objects. */ | |
1751 | value_free (b->val); | |
fa4727a6 DJ |
1752 | b->val = NULL; |
1753 | b->val_valid = 0; | |
60e1c644 PA |
1754 | |
1755 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1756 | expression is stored in the breakpoint object, not in the | |
1757 | locations (re)created below. */ | |
c1fc2657 | 1758 | if (b->cond_string != NULL) |
60e1c644 | 1759 | { |
4d01a485 | 1760 | b->cond_exp.reset (); |
60e1c644 | 1761 | |
c1fc2657 | 1762 | s = b->cond_string; |
1bb9788d | 1763 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1764 | } |
a5606eee | 1765 | } |
a5606eee VP |
1766 | |
1767 | /* If we failed to parse the expression, for example because | |
1768 | it refers to a global variable in a not-yet-loaded shared library, | |
1769 | don't try to insert watchpoint. We don't automatically delete | |
1770 | such watchpoint, though, since failure to parse expression | |
1771 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1772 | if (!target_has_execution) |
2d134ed3 PA |
1773 | { |
1774 | /* Without execution, memory can't change. No use to try and | |
1775 | set watchpoint locations. The watchpoint will be reset when | |
1776 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1777 | if (!can_use_hw_watchpoints) |
1778 | { | |
c1fc2657 SM |
1779 | if (b->ops->works_in_software_mode (b)) |
1780 | b->type = bp_watchpoint; | |
e8369a73 | 1781 | else |
638aa5a1 AB |
1782 | error (_("Can't set read/access watchpoint when " |
1783 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1784 | } |
2d134ed3 PA |
1785 | } |
1786 | else if (within_current_scope && b->exp) | |
a5606eee | 1787 | { |
0cf6dd15 | 1788 | int pc = 0; |
fa4727a6 | 1789 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1790 | struct program_space *frame_pspace; |
a5606eee | 1791 | |
4d01a485 | 1792 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1793 | |
a5606eee VP |
1794 | /* Avoid setting b->val if it's already set. The meaning of |
1795 | b->val is 'the last value' user saw, and we should update | |
1796 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1797 | happens, the code that reports it updates b->val directly. |
1798 | We don't keep track of the memory value for masked | |
1799 | watchpoints. */ | |
c1fc2657 | 1800 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1801 | { |
bb9d5f81 PP |
1802 | if (b->val_bitsize != 0) |
1803 | { | |
1804 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1805 | if (v != NULL) | |
1806 | release_value (v); | |
1807 | } | |
fa4727a6 DJ |
1808 | b->val = v; |
1809 | b->val_valid = 1; | |
1810 | } | |
a5606eee | 1811 | |
2d134ed3 PA |
1812 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1813 | ||
a5606eee | 1814 | /* Look at each value on the value chain. */ |
9fa40276 | 1815 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1816 | { |
1817 | /* If it's a memory location, and GDB actually needed | |
1818 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1819 | must watch it. If the first value returned is |
1820 | still lazy, that means an error occurred reading it; | |
1821 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1822 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1823 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1824 | { |
1825 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1826 | |
a5606eee VP |
1827 | /* We only watch structs and arrays if user asked |
1828 | for it explicitly, never if they just happen to | |
1829 | appear in the middle of some value chain. */ | |
fa4727a6 | 1830 | if (v == result |
a5606eee VP |
1831 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1832 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1833 | { | |
1834 | CORE_ADDR addr; | |
f486487f | 1835 | enum target_hw_bp_type type; |
a5606eee | 1836 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1837 | int bitpos = 0, bitsize = 0; |
1838 | ||
1839 | if (value_bitsize (v) != 0) | |
1840 | { | |
1841 | /* Extract the bit parameters out from the bitfield | |
1842 | sub-expression. */ | |
1843 | bitpos = value_bitpos (v); | |
1844 | bitsize = value_bitsize (v); | |
1845 | } | |
1846 | else if (v == result && b->val_bitsize != 0) | |
1847 | { | |
1848 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1849 | lvalue whose bit parameters are saved in the fields | |
1850 | VAL_BITPOS and VAL_BITSIZE. */ | |
1851 | bitpos = b->val_bitpos; | |
1852 | bitsize = b->val_bitsize; | |
1853 | } | |
a5606eee | 1854 | |
42ae5230 | 1855 | addr = value_address (v); |
bb9d5f81 PP |
1856 | if (bitsize != 0) |
1857 | { | |
1858 | /* Skip the bytes that don't contain the bitfield. */ | |
1859 | addr += bitpos / 8; | |
1860 | } | |
1861 | ||
a5606eee | 1862 | type = hw_write; |
c1fc2657 | 1863 | if (b->type == bp_read_watchpoint) |
a5606eee | 1864 | type = hw_read; |
c1fc2657 | 1865 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1866 | type = hw_access; |
3a5c3e22 | 1867 | |
c1fc2657 SM |
1868 | loc = allocate_bp_location (b); |
1869 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1870 | ; |
1871 | *tmp = loc; | |
a6d9a66e | 1872 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1873 | |
1874 | loc->pspace = frame_pspace; | |
a5606eee | 1875 | loc->address = addr; |
bb9d5f81 PP |
1876 | |
1877 | if (bitsize != 0) | |
1878 | { | |
1879 | /* Just cover the bytes that make up the bitfield. */ | |
1880 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1881 | } | |
1882 | else | |
1883 | loc->length = TYPE_LENGTH (value_type (v)); | |
1884 | ||
a5606eee VP |
1885 | loc->watchpoint_type = type; |
1886 | } | |
1887 | } | |
9fa40276 TJB |
1888 | } |
1889 | ||
1890 | /* Change the type of breakpoint between hardware assisted or | |
1891 | an ordinary watchpoint depending on the hardware support | |
1892 | and free hardware slots. REPARSE is set when the inferior | |
1893 | is started. */ | |
a9634178 | 1894 | if (reparse) |
9fa40276 | 1895 | { |
e09342b5 | 1896 | int reg_cnt; |
9fa40276 TJB |
1897 | enum bp_loc_type loc_type; |
1898 | struct bp_location *bl; | |
a5606eee | 1899 | |
a9634178 | 1900 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1901 | |
1902 | if (reg_cnt) | |
9fa40276 TJB |
1903 | { |
1904 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1905 | enum bptype type; |
9fa40276 | 1906 | |
a9634178 TJB |
1907 | /* Use an exact watchpoint when there's only one memory region to be |
1908 | watched, and only one debug register is needed to watch it. */ | |
1909 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1910 | ||
9fa40276 | 1911 | /* We need to determine how many resources are already |
e09342b5 TJB |
1912 | used for all other hardware watchpoints plus this one |
1913 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1914 | this watchpoint in as well. */ |
1915 | ||
1916 | /* If this is a software watchpoint, we try to turn it | |
1917 | to a hardware one -- count resources as if B was of | |
1918 | hardware watchpoint type. */ | |
c1fc2657 | 1919 | type = b->type; |
a1398e0c PA |
1920 | if (type == bp_watchpoint) |
1921 | type = bp_hardware_watchpoint; | |
1922 | ||
1923 | /* This watchpoint may or may not have been placed on | |
1924 | the list yet at this point (it won't be in the list | |
1925 | if we're trying to create it for the first time, | |
1926 | through watch_command), so always account for it | |
1927 | manually. */ | |
1928 | ||
1929 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1930 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1931 | |
1932 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1933 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1934 | |
1935 | target_resources_ok | |
1936 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1937 | if (target_resources_ok <= 0) |
a9634178 | 1938 | { |
c1fc2657 | 1939 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1940 | |
1941 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1942 | error (_("Target does not support this type of " |
1943 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1944 | else if (target_resources_ok < 0 && !sw_mode) |
1945 | error (_("There are not enough available hardware " | |
1946 | "resources for this watchpoint.")); | |
a1398e0c PA |
1947 | |
1948 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1949 | b->type = bp_watchpoint; |
a1398e0c PA |
1950 | } |
1951 | else | |
1952 | { | |
1953 | /* If this was a software watchpoint, we've just | |
1954 | found we have enough resources to turn it to a | |
1955 | hardware watchpoint. Otherwise, this is a | |
1956 | nop. */ | |
c1fc2657 | 1957 | b->type = type; |
a9634178 | 1958 | } |
9fa40276 | 1959 | } |
c1fc2657 | 1960 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1961 | { |
1962 | if (!can_use_hw_watchpoints) | |
1963 | error (_("Can't set read/access watchpoint when " | |
1964 | "hardware watchpoints are disabled.")); | |
1965 | else | |
1966 | error (_("Expression cannot be implemented with " | |
1967 | "read/access watchpoint.")); | |
1968 | } | |
9fa40276 | 1969 | else |
c1fc2657 | 1970 | b->type = bp_watchpoint; |
9fa40276 | 1971 | |
c1fc2657 | 1972 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1973 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1974 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1975 | bl->loc_type = loc_type; |
1976 | } | |
1977 | ||
1978 | for (v = val_chain; v; v = next) | |
1979 | { | |
a5606eee VP |
1980 | next = value_next (v); |
1981 | if (v != b->val) | |
1982 | value_free (v); | |
1983 | } | |
1984 | ||
c7437ca6 PA |
1985 | /* If a software watchpoint is not watching any memory, then the |
1986 | above left it without any location set up. But, | |
1987 | bpstat_stop_status requires a location to be able to report | |
1988 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1989 | if (b->type == bp_watchpoint && b->loc == NULL) |
1990 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1991 | } |
1992 | else if (!within_current_scope) | |
7270d8f2 | 1993 | { |
ac74f770 MS |
1994 | printf_filtered (_("\ |
1995 | Watchpoint %d deleted because the program has left the block\n\ | |
1996 | in which its expression is valid.\n"), | |
c1fc2657 | 1997 | b->number); |
d0fb5eae | 1998 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1999 | } |
a5606eee VP |
2000 | |
2001 | /* Restore the selected frame. */ | |
66076460 DJ |
2002 | if (frame_saved) |
2003 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2004 | } |
2005 | ||
a5606eee | 2006 | |
74960c60 | 2007 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2008 | inserted in the inferior. We don't differentiate the type of BL's owner |
2009 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2010 | breakpoint_ops is not defined, because in insert_bp_location, | |
2011 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2012 | static int |
35df4500 | 2013 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2014 | { |
35df4500 | 2015 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2016 | return 0; |
2017 | ||
35df4500 | 2018 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2019 | return 0; |
2020 | ||
35df4500 | 2021 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2022 | return 0; |
2023 | ||
f8eba3c6 TT |
2024 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2025 | return 0; | |
2026 | ||
56710373 PA |
2027 | /* This is set for example, when we're attached to the parent of a |
2028 | vfork, and have detached from the child. The child is running | |
2029 | free, and we expect it to do an exec or exit, at which point the | |
2030 | OS makes the parent schedulable again (and the target reports | |
2031 | that the vfork is done). Until the child is done with the shared | |
2032 | memory region, do not insert breakpoints in the parent, otherwise | |
2033 | the child could still trip on the parent's breakpoints. Since | |
2034 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2035 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2036 | return 0; |
2037 | ||
31e77af2 | 2038 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2039 | location, except if the breakpoint is a single-step breakpoint, |
2040 | and the breakpoint's thread is the thread which is stepping past | |
2041 | a breakpoint. */ | |
31e77af2 PA |
2042 | if ((bl->loc_type == bp_loc_software_breakpoint |
2043 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2044 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2045 | bl->address) |
2046 | /* The single-step breakpoint may be inserted at the location | |
2047 | we're trying to step if the instruction branches to itself. | |
2048 | However, the instruction won't be executed at all and it may | |
2049 | break the semantics of the instruction, for example, the | |
2050 | instruction is a conditional branch or updates some flags. | |
2051 | We can't fix it unless GDB is able to emulate the instruction | |
2052 | or switch to displaced stepping. */ | |
2053 | && !(bl->owner->type == bp_single_step | |
2054 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2055 | { |
2056 | if (debug_infrun) | |
2057 | { | |
2058 | fprintf_unfiltered (gdb_stdlog, | |
2059 | "infrun: skipping breakpoint: " | |
2060 | "stepping past insn at: %s\n", | |
2061 | paddress (bl->gdbarch, bl->address)); | |
2062 | } | |
2063 | return 0; | |
2064 | } | |
31e77af2 | 2065 | |
963f9c80 PA |
2066 | /* Don't insert watchpoints if we're trying to step past the |
2067 | instruction that triggered one. */ | |
2068 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2069 | && stepping_past_nonsteppable_watchpoint ()) | |
2070 | { | |
2071 | if (debug_infrun) | |
2072 | { | |
2073 | fprintf_unfiltered (gdb_stdlog, | |
2074 | "infrun: stepping past non-steppable watchpoint. " | |
2075 | "skipping watchpoint at %s:%d\n", | |
2076 | paddress (bl->gdbarch, bl->address), | |
2077 | bl->length); | |
2078 | } | |
2079 | return 0; | |
2080 | } | |
2081 | ||
74960c60 VP |
2082 | return 1; |
2083 | } | |
2084 | ||
934709f0 PW |
2085 | /* Same as should_be_inserted but does the check assuming |
2086 | that the location is not duplicated. */ | |
2087 | ||
2088 | static int | |
2089 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2090 | { | |
2091 | int result; | |
2092 | const int save_duplicate = bl->duplicate; | |
2093 | ||
2094 | bl->duplicate = 0; | |
2095 | result = should_be_inserted (bl); | |
2096 | bl->duplicate = save_duplicate; | |
2097 | return result; | |
2098 | } | |
2099 | ||
b775012e LM |
2100 | /* Parses a conditional described by an expression COND into an |
2101 | agent expression bytecode suitable for evaluation | |
2102 | by the bytecode interpreter. Return NULL if there was | |
2103 | any error during parsing. */ | |
2104 | ||
833177a4 | 2105 | static agent_expr_up |
b775012e LM |
2106 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2107 | { | |
833177a4 | 2108 | if (cond == NULL) |
b775012e LM |
2109 | return NULL; |
2110 | ||
833177a4 PA |
2111 | agent_expr_up aexpr; |
2112 | ||
b775012e LM |
2113 | /* We don't want to stop processing, so catch any errors |
2114 | that may show up. */ | |
492d29ea | 2115 | TRY |
b775012e | 2116 | { |
036e657b | 2117 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2118 | } |
2119 | ||
492d29ea | 2120 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2121 | { |
2122 | /* If we got here, it means the condition could not be parsed to a valid | |
2123 | bytecode expression and thus can't be evaluated on the target's side. | |
2124 | It's no use iterating through the conditions. */ | |
b775012e | 2125 | } |
492d29ea | 2126 | END_CATCH |
b775012e LM |
2127 | |
2128 | /* We have a valid agent expression. */ | |
2129 | return aexpr; | |
2130 | } | |
2131 | ||
2132 | /* Based on location BL, create a list of breakpoint conditions to be | |
2133 | passed on to the target. If we have duplicated locations with different | |
2134 | conditions, we will add such conditions to the list. The idea is that the | |
2135 | target will evaluate the list of conditions and will only notify GDB when | |
2136 | one of them is true. */ | |
2137 | ||
2138 | static void | |
2139 | build_target_condition_list (struct bp_location *bl) | |
2140 | { | |
2141 | struct bp_location **locp = NULL, **loc2p; | |
2142 | int null_condition_or_parse_error = 0; | |
2143 | int modified = bl->needs_update; | |
2144 | struct bp_location *loc; | |
2145 | ||
8b4f3082 | 2146 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2147 | bl->target_info.conditions.clear (); |
8b4f3082 | 2148 | |
b775012e LM |
2149 | /* This is only meaningful if the target is |
2150 | evaluating conditions and if the user has | |
2151 | opted for condition evaluation on the target's | |
2152 | side. */ | |
2153 | if (gdb_evaluates_breakpoint_condition_p () | |
2154 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2155 | return; | |
2156 | ||
2157 | /* Do a first pass to check for locations with no assigned | |
2158 | conditions or conditions that fail to parse to a valid agent expression | |
2159 | bytecode. If any of these happen, then it's no use to send conditions | |
2160 | to the target since this location will always trigger and generate a | |
2161 | response back to GDB. */ | |
2162 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2163 | { | |
2164 | loc = (*loc2p); | |
2165 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2166 | { | |
2167 | if (modified) | |
2168 | { | |
b775012e LM |
2169 | /* Re-parse the conditions since something changed. In that |
2170 | case we already freed the condition bytecodes (see | |
2171 | force_breakpoint_reinsertion). We just | |
2172 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2173 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2174 | loc->cond.get ()); | |
b775012e LM |
2175 | } |
2176 | ||
2177 | /* If we have a NULL bytecode expression, it means something | |
2178 | went wrong or we have a null condition expression. */ | |
2179 | if (!loc->cond_bytecode) | |
2180 | { | |
2181 | null_condition_or_parse_error = 1; | |
2182 | break; | |
2183 | } | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /* If any of these happened, it means we will have to evaluate the conditions | |
2188 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2189 | for all the other duplicate locations, thus we free all of them here. | |
2190 | ||
2191 | This is so we have a finer control over which locations' conditions are | |
2192 | being evaluated by GDB or the remote stub. */ | |
2193 | if (null_condition_or_parse_error) | |
2194 | { | |
2195 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2196 | { | |
2197 | loc = (*loc2p); | |
2198 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2199 | { | |
2200 | /* Only go as far as the first NULL bytecode is | |
2201 | located. */ | |
2202 | if (!loc->cond_bytecode) | |
2203 | return; | |
2204 | ||
833177a4 | 2205 | loc->cond_bytecode.reset (); |
b775012e LM |
2206 | } |
2207 | } | |
2208 | } | |
2209 | ||
2210 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2211 | for this location's address. */ | |
2212 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2213 | { | |
2214 | loc = (*loc2p); | |
2215 | if (loc->cond | |
2216 | && is_breakpoint (loc->owner) | |
2217 | && loc->pspace->num == bl->pspace->num | |
2218 | && loc->owner->enable_state == bp_enabled | |
2219 | && loc->enabled) | |
3cde5c42 PA |
2220 | { |
2221 | /* Add the condition to the vector. This will be used later | |
2222 | to send the conditions to the target. */ | |
2223 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2224 | } | |
b775012e LM |
2225 | } |
2226 | ||
2227 | return; | |
2228 | } | |
2229 | ||
d3ce09f5 SS |
2230 | /* Parses a command described by string CMD into an agent expression |
2231 | bytecode suitable for evaluation by the bytecode interpreter. | |
2232 | Return NULL if there was any error during parsing. */ | |
2233 | ||
833177a4 | 2234 | static agent_expr_up |
d3ce09f5 SS |
2235 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2236 | { | |
2237 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2238 | struct expression **argvec; |
bbc13ae3 KS |
2239 | const char *cmdrest; |
2240 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2241 | struct format_piece *fpieces; |
2242 | int nargs; | |
2243 | struct gdbarch *gdbarch = get_current_arch (); | |
2244 | ||
833177a4 | 2245 | if (cmd == NULL) |
d3ce09f5 SS |
2246 | return NULL; |
2247 | ||
2248 | cmdrest = cmd; | |
2249 | ||
2250 | if (*cmdrest == ',') | |
2251 | ++cmdrest; | |
f1735a53 | 2252 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2253 | |
2254 | if (*cmdrest++ != '"') | |
2255 | error (_("No format string following the location")); | |
2256 | ||
2257 | format_start = cmdrest; | |
2258 | ||
2259 | fpieces = parse_format_string (&cmdrest); | |
2260 | ||
2261 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2262 | ||
2263 | format_end = cmdrest; | |
2264 | ||
2265 | if (*cmdrest++ != '"') | |
2266 | error (_("Bad format string, non-terminated '\"'.")); | |
2267 | ||
f1735a53 | 2268 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2269 | |
2270 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2271 | error (_("Invalid argument syntax")); | |
2272 | ||
2273 | if (*cmdrest == ',') | |
2274 | cmdrest++; | |
f1735a53 | 2275 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2276 | |
2277 | /* For each argument, make an expression. */ | |
2278 | ||
2279 | argvec = (struct expression **) alloca (strlen (cmd) | |
2280 | * sizeof (struct expression *)); | |
2281 | ||
2282 | nargs = 0; | |
2283 | while (*cmdrest != '\0') | |
2284 | { | |
bbc13ae3 | 2285 | const char *cmd1; |
d3ce09f5 SS |
2286 | |
2287 | cmd1 = cmdrest; | |
4d01a485 PA |
2288 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2289 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2290 | cmdrest = cmd1; |
2291 | if (*cmdrest == ',') | |
2292 | ++cmdrest; | |
2293 | } | |
2294 | ||
833177a4 PA |
2295 | agent_expr_up aexpr; |
2296 | ||
d3ce09f5 SS |
2297 | /* We don't want to stop processing, so catch any errors |
2298 | that may show up. */ | |
492d29ea | 2299 | TRY |
d3ce09f5 | 2300 | { |
036e657b JB |
2301 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2302 | format_start, format_end - format_start, | |
2303 | fpieces, nargs, argvec); | |
d3ce09f5 | 2304 | } |
492d29ea | 2305 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2306 | { |
2307 | /* If we got here, it means the command could not be parsed to a valid | |
2308 | bytecode expression and thus can't be evaluated on the target's side. | |
2309 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2310 | } |
492d29ea PA |
2311 | END_CATCH |
2312 | ||
2313 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2314 | |
d3ce09f5 SS |
2315 | /* We have a valid agent expression, return it. */ |
2316 | return aexpr; | |
2317 | } | |
2318 | ||
2319 | /* Based on location BL, create a list of breakpoint commands to be | |
2320 | passed on to the target. If we have duplicated locations with | |
2321 | different commands, we will add any such to the list. */ | |
2322 | ||
2323 | static void | |
2324 | build_target_command_list (struct bp_location *bl) | |
2325 | { | |
2326 | struct bp_location **locp = NULL, **loc2p; | |
2327 | int null_command_or_parse_error = 0; | |
2328 | int modified = bl->needs_update; | |
2329 | struct bp_location *loc; | |
2330 | ||
3cde5c42 PA |
2331 | /* Clear commands left over from a previous insert. */ |
2332 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2333 | |
41fac0cf | 2334 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2335 | return; |
2336 | ||
41fac0cf PA |
2337 | /* For now, limit to agent-style dprintf breakpoints. */ |
2338 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2339 | return; |
2340 | ||
41fac0cf PA |
2341 | /* For now, if we have any duplicate location that isn't a dprintf, |
2342 | don't install the target-side commands, as that would make the | |
2343 | breakpoint not be reported to the core, and we'd lose | |
2344 | control. */ | |
2345 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2346 | { | |
2347 | loc = (*loc2p); | |
2348 | if (is_breakpoint (loc->owner) | |
2349 | && loc->pspace->num == bl->pspace->num | |
2350 | && loc->owner->type != bp_dprintf) | |
2351 | return; | |
2352 | } | |
2353 | ||
d3ce09f5 SS |
2354 | /* Do a first pass to check for locations with no assigned |
2355 | conditions or conditions that fail to parse to a valid agent expression | |
2356 | bytecode. If any of these happen, then it's no use to send conditions | |
2357 | to the target since this location will always trigger and generate a | |
2358 | response back to GDB. */ | |
2359 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2360 | { | |
2361 | loc = (*loc2p); | |
2362 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2363 | { | |
2364 | if (modified) | |
2365 | { | |
d3ce09f5 SS |
2366 | /* Re-parse the commands since something changed. In that |
2367 | case we already freed the command bytecodes (see | |
2368 | force_breakpoint_reinsertion). We just | |
2369 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2370 | loc->cmd_bytecode |
2371 | = parse_cmd_to_aexpr (bl->address, | |
2372 | loc->owner->extra_string); | |
d3ce09f5 SS |
2373 | } |
2374 | ||
2375 | /* If we have a NULL bytecode expression, it means something | |
2376 | went wrong or we have a null command expression. */ | |
2377 | if (!loc->cmd_bytecode) | |
2378 | { | |
2379 | null_command_or_parse_error = 1; | |
2380 | break; | |
2381 | } | |
2382 | } | |
2383 | } | |
2384 | ||
2385 | /* If anything failed, then we're not doing target-side commands, | |
2386 | and so clean up. */ | |
2387 | if (null_command_or_parse_error) | |
2388 | { | |
2389 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2390 | { | |
2391 | loc = (*loc2p); | |
2392 | if (is_breakpoint (loc->owner) | |
2393 | && loc->pspace->num == bl->pspace->num) | |
2394 | { | |
2395 | /* Only go as far as the first NULL bytecode is | |
2396 | located. */ | |
40fb6c5e | 2397 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2398 | return; |
2399 | ||
833177a4 | 2400 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2401 | } |
2402 | } | |
2403 | } | |
2404 | ||
2405 | /* No NULL commands or failed bytecode generation. Build a command list | |
2406 | for this location's address. */ | |
2407 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2408 | { | |
2409 | loc = (*loc2p); | |
2410 | if (loc->owner->extra_string | |
2411 | && is_breakpoint (loc->owner) | |
2412 | && loc->pspace->num == bl->pspace->num | |
2413 | && loc->owner->enable_state == bp_enabled | |
2414 | && loc->enabled) | |
3cde5c42 PA |
2415 | { |
2416 | /* Add the command to the vector. This will be used later | |
2417 | to send the commands to the target. */ | |
2418 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2419 | } | |
d3ce09f5 SS |
2420 | } |
2421 | ||
2422 | bl->target_info.persist = 0; | |
2423 | /* Maybe flag this location as persistent. */ | |
2424 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2425 | bl->target_info.persist = 1; | |
2426 | } | |
2427 | ||
833b7ab5 YQ |
2428 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2429 | of breakpoint according to ADDR except single-step breakpoint. | |
2430 | Get the kind of single-step breakpoint according to the current | |
2431 | registers state. */ | |
cd6c3b4f YQ |
2432 | |
2433 | static int | |
2434 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2435 | { | |
833b7ab5 YQ |
2436 | if (bl->owner->type == bp_single_step) |
2437 | { | |
2438 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2439 | struct regcache *regcache; | |
2440 | ||
2441 | regcache = get_thread_regcache (thr->ptid); | |
2442 | ||
2443 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2444 | regcache, addr); | |
2445 | } | |
2446 | else | |
2447 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2448 | } |
2449 | ||
35df4500 TJB |
2450 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2451 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2452 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2453 | Returns 0 for success, 1 if the bp_location type is not supported or |
2454 | -1 for failure. | |
879bfdc2 | 2455 | |
4a64f543 MS |
2456 | NOTE drow/2003-09-09: This routine could be broken down to an |
2457 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2458 | static int |
35df4500 | 2459 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2460 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2461 | int *disabled_breaks, |
dd61ec5c MW |
2462 | int *hw_breakpoint_error, |
2463 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2464 | { |
0000e5cc PA |
2465 | enum errors bp_err = GDB_NO_ERROR; |
2466 | const char *bp_err_message = NULL; | |
879bfdc2 | 2467 | |
b775012e | 2468 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2469 | return 0; |
2470 | ||
35c63cd8 JB |
2471 | /* Note we don't initialize bl->target_info, as that wipes out |
2472 | the breakpoint location's shadow_contents if the breakpoint | |
2473 | is still inserted at that location. This in turn breaks | |
2474 | target_read_memory which depends on these buffers when | |
2475 | a memory read is requested at the breakpoint location: | |
2476 | Once the target_info has been wiped, we fail to see that | |
2477 | we have a breakpoint inserted at that address and thus | |
2478 | read the breakpoint instead of returning the data saved in | |
2479 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2480 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2481 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2482 | bl->target_info.length = bl->length; |
8181d85f | 2483 | |
b775012e LM |
2484 | /* When working with target-side conditions, we must pass all the conditions |
2485 | for the same breakpoint address down to the target since GDB will not | |
2486 | insert those locations. With a list of breakpoint conditions, the target | |
2487 | can decide when to stop and notify GDB. */ | |
2488 | ||
2489 | if (is_breakpoint (bl->owner)) | |
2490 | { | |
2491 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2492 | build_target_command_list (bl); |
2493 | /* Reset the modification marker. */ | |
b775012e LM |
2494 | bl->needs_update = 0; |
2495 | } | |
2496 | ||
35df4500 TJB |
2497 | if (bl->loc_type == bp_loc_software_breakpoint |
2498 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2499 | { |
35df4500 | 2500 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2501 | { |
2502 | /* If the explicitly specified breakpoint type | |
2503 | is not hardware breakpoint, check the memory map to see | |
2504 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2505 | |
765dc015 VP |
2506 | Two important cases are: |
2507 | - location type is not hardware breakpoint, memory | |
2508 | is readonly. We change the type of the location to | |
2509 | hardware breakpoint. | |
4a64f543 MS |
2510 | - location type is hardware breakpoint, memory is |
2511 | read-write. This means we've previously made the | |
2512 | location hardware one, but then the memory map changed, | |
2513 | so we undo. | |
765dc015 | 2514 | |
4a64f543 MS |
2515 | When breakpoints are removed, remove_breakpoints will use |
2516 | location types we've just set here, the only possible | |
2517 | problem is that memory map has changed during running | |
2518 | program, but it's not going to work anyway with current | |
2519 | gdb. */ | |
765dc015 | 2520 | struct mem_region *mr |
0d5ed153 | 2521 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2522 | |
2523 | if (mr) | |
2524 | { | |
2525 | if (automatic_hardware_breakpoints) | |
2526 | { | |
765dc015 VP |
2527 | enum bp_loc_type new_type; |
2528 | ||
2529 | if (mr->attrib.mode != MEM_RW) | |
2530 | new_type = bp_loc_hardware_breakpoint; | |
2531 | else | |
2532 | new_type = bp_loc_software_breakpoint; | |
2533 | ||
35df4500 | 2534 | if (new_type != bl->loc_type) |
765dc015 VP |
2535 | { |
2536 | static int said = 0; | |
cc59ec59 | 2537 | |
35df4500 | 2538 | bl->loc_type = new_type; |
765dc015 VP |
2539 | if (!said) |
2540 | { | |
3e43a32a MS |
2541 | fprintf_filtered (gdb_stdout, |
2542 | _("Note: automatically using " | |
2543 | "hardware breakpoints for " | |
2544 | "read-only addresses.\n")); | |
765dc015 VP |
2545 | said = 1; |
2546 | } | |
2547 | } | |
2548 | } | |
35df4500 | 2549 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2550 | && mr->attrib.mode != MEM_RW) |
2551 | { | |
2552 | fprintf_unfiltered (tmp_error_stream, | |
2553 | _("Cannot insert breakpoint %d.\n" | |
2554 | "Cannot set software breakpoint " | |
2555 | "at read-only address %s\n"), | |
2556 | bl->owner->number, | |
2557 | paddress (bl->gdbarch, bl->address)); | |
2558 | return 1; | |
2559 | } | |
765dc015 VP |
2560 | } |
2561 | } | |
2562 | ||
879bfdc2 DJ |
2563 | /* First check to see if we have to handle an overlay. */ |
2564 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2565 | || bl->section == NULL |
2566 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2567 | { |
2568 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2569 | TRY |
dd61ec5c | 2570 | { |
0000e5cc PA |
2571 | int val; |
2572 | ||
dd61ec5c | 2573 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2574 | if (val) |
2575 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2576 | } |
492d29ea | 2577 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2578 | { |
0000e5cc PA |
2579 | bp_err = e.error; |
2580 | bp_err_message = e.message; | |
dd61ec5c | 2581 | } |
492d29ea | 2582 | END_CATCH |
879bfdc2 DJ |
2583 | } |
2584 | else | |
2585 | { | |
4a64f543 | 2586 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2587 | Shall we set a breakpoint at the LMA? */ |
2588 | if (!overlay_events_enabled) | |
2589 | { | |
2590 | /* Yes -- overlay event support is not active, | |
2591 | so we must try to set a breakpoint at the LMA. | |
2592 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2593 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2594 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2595 | bl->owner->number); |
879bfdc2 DJ |
2596 | else |
2597 | { | |
35df4500 TJB |
2598 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2599 | bl->section); | |
879bfdc2 | 2600 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2601 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2602 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2603 | |
2604 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2605 | TRY |
0000e5cc PA |
2606 | { |
2607 | int val; | |
2608 | ||
579c6ad9 | 2609 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2610 | = breakpoint_kind (bl, &addr); |
2611 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2612 | val = target_insert_breakpoint (bl->gdbarch, |
2613 | &bl->overlay_target_info); | |
2614 | if (val) | |
2615 | bp_err = GENERIC_ERROR; | |
2616 | } | |
492d29ea | 2617 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2618 | { |
2619 | bp_err = e.error; | |
2620 | bp_err_message = e.message; | |
2621 | } | |
492d29ea | 2622 | END_CATCH |
0000e5cc PA |
2623 | |
2624 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2625 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2626 | "Overlay breakpoint %d " |
2627 | "failed: in ROM?\n", | |
35df4500 | 2628 | bl->owner->number); |
879bfdc2 DJ |
2629 | } |
2630 | } | |
2631 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2632 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2633 | { |
2634 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2635 | TRY |
dd61ec5c | 2636 | { |
0000e5cc PA |
2637 | int val; |
2638 | ||
dd61ec5c | 2639 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2640 | if (val) |
2641 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2642 | } |
492d29ea | 2643 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2644 | { |
0000e5cc PA |
2645 | bp_err = e.error; |
2646 | bp_err_message = e.message; | |
dd61ec5c | 2647 | } |
492d29ea | 2648 | END_CATCH |
879bfdc2 DJ |
2649 | } |
2650 | else | |
2651 | { | |
2652 | /* No. This breakpoint will not be inserted. | |
2653 | No error, but do not mark the bp as 'inserted'. */ | |
2654 | return 0; | |
2655 | } | |
2656 | } | |
2657 | ||
0000e5cc | 2658 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2659 | { |
2660 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2661 | |
2662 | /* In some cases, we might not be able to insert a | |
2663 | breakpoint in a shared library that has already been | |
2664 | removed, but we have not yet processed the shlib unload | |
2665 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2666 | breakpoint insertion themselves can't tell why the |
2667 | breakpoint insertion failed (e.g., the remote target | |
2668 | doesn't define error codes), so we must treat generic | |
2669 | errors as memory errors. */ | |
0000e5cc | 2670 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2671 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2672 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2673 | || shared_objfile_contains_address_p (bl->pspace, |
2674 | bl->address))) | |
879bfdc2 | 2675 | { |
4a64f543 | 2676 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2677 | bl->shlib_disabled = 1; |
8d3788bd | 2678 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2679 | if (!*disabled_breaks) |
2680 | { | |
2681 | fprintf_unfiltered (tmp_error_stream, | |
2682 | "Cannot insert breakpoint %d.\n", | |
2683 | bl->owner->number); | |
2684 | fprintf_unfiltered (tmp_error_stream, | |
2685 | "Temporarily disabling shared " | |
2686 | "library breakpoints:\n"); | |
2687 | } | |
2688 | *disabled_breaks = 1; | |
879bfdc2 | 2689 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2690 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2691 | return 0; |
879bfdc2 DJ |
2692 | } |
2693 | else | |
879bfdc2 | 2694 | { |
35df4500 | 2695 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2696 | { |
0000e5cc PA |
2697 | *hw_breakpoint_error = 1; |
2698 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2699 | fprintf_unfiltered (tmp_error_stream, |
2700 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2701 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2702 | if (bp_err_message != NULL) | |
2703 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2704 | } |
2705 | else | |
2706 | { | |
0000e5cc PA |
2707 | if (bp_err_message == NULL) |
2708 | { | |
1ccbe998 | 2709 | std::string message |
0000e5cc PA |
2710 | = memory_error_message (TARGET_XFER_E_IO, |
2711 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2712 | |
2713 | fprintf_unfiltered (tmp_error_stream, | |
2714 | "Cannot insert breakpoint %d.\n" | |
2715 | "%s\n", | |
1ccbe998 | 2716 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2717 | } |
2718 | else | |
2719 | { | |
2720 | fprintf_unfiltered (tmp_error_stream, | |
2721 | "Cannot insert breakpoint %d: %s\n", | |
2722 | bl->owner->number, | |
2723 | bp_err_message); | |
2724 | } | |
879bfdc2 | 2725 | } |
0000e5cc | 2726 | return 1; |
879bfdc2 DJ |
2727 | |
2728 | } | |
2729 | } | |
2730 | else | |
35df4500 | 2731 | bl->inserted = 1; |
879bfdc2 | 2732 | |
0000e5cc | 2733 | return 0; |
879bfdc2 DJ |
2734 | } |
2735 | ||
35df4500 | 2736 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2737 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2738 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2739 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2740 | { |
0000e5cc PA |
2741 | int val; |
2742 | ||
77b06cd7 TJB |
2743 | gdb_assert (bl->owner->ops != NULL |
2744 | && bl->owner->ops->insert_location != NULL); | |
2745 | ||
2746 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2747 | |
2748 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2749 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2750 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2751 | { |
2752 | struct bp_location *loc, **loc_temp; | |
2753 | ||
2754 | /* But don't try to insert it, if there's already another | |
2755 | hw_access location that would be considered a duplicate | |
2756 | of this one. */ | |
2757 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2758 | if (loc != bl |
85d721b8 | 2759 | && loc->watchpoint_type == hw_access |
35df4500 | 2760 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2761 | { |
35df4500 TJB |
2762 | bl->duplicate = 1; |
2763 | bl->inserted = 1; | |
2764 | bl->target_info = loc->target_info; | |
2765 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2766 | val = 0; |
2767 | break; | |
2768 | } | |
2769 | ||
2770 | if (val == 1) | |
2771 | { | |
77b06cd7 TJB |
2772 | bl->watchpoint_type = hw_access; |
2773 | val = bl->owner->ops->insert_location (bl); | |
2774 | ||
2775 | if (val) | |
2776 | /* Back to the original value. */ | |
2777 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2778 | } |
2779 | } | |
2780 | ||
35df4500 | 2781 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2782 | } |
2783 | ||
35df4500 | 2784 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2785 | { |
0000e5cc PA |
2786 | int val; |
2787 | ||
77b06cd7 TJB |
2788 | gdb_assert (bl->owner->ops != NULL |
2789 | && bl->owner->ops->insert_location != NULL); | |
2790 | ||
2791 | val = bl->owner->ops->insert_location (bl); | |
2792 | if (val) | |
2793 | { | |
2794 | bl->owner->enable_state = bp_disabled; | |
2795 | ||
2796 | if (val == 1) | |
2797 | warning (_("\ | |
2798 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2799 | of catchpoint."), bl->owner->number); | |
2800 | else | |
2801 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2802 | } | |
2803 | ||
2804 | bl->inserted = (val == 0); | |
1640b821 DJ |
2805 | |
2806 | /* We've already printed an error message if there was a problem | |
2807 | inserting this catchpoint, and we've disabled the catchpoint, | |
2808 | so just return success. */ | |
2809 | return 0; | |
879bfdc2 DJ |
2810 | } |
2811 | ||
2812 | return 0; | |
2813 | } | |
2814 | ||
6c95b8df PA |
2815 | /* This function is called when program space PSPACE is about to be |
2816 | deleted. It takes care of updating breakpoints to not reference | |
2817 | PSPACE anymore. */ | |
2818 | ||
2819 | void | |
2820 | breakpoint_program_space_exit (struct program_space *pspace) | |
2821 | { | |
2822 | struct breakpoint *b, *b_temp; | |
876fa593 | 2823 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2824 | |
2825 | /* Remove any breakpoint that was set through this program space. */ | |
2826 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2827 | { | |
2828 | if (b->pspace == pspace) | |
2829 | delete_breakpoint (b); | |
2830 | } | |
2831 | ||
2832 | /* Breakpoints set through other program spaces could have locations | |
2833 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2834 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2835 | { |
2836 | struct bp_location *tmp; | |
2837 | ||
2838 | if (loc->pspace == pspace) | |
2839 | { | |
2bdf28a0 | 2840 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2841 | if (loc->owner->loc == loc) |
2842 | loc->owner->loc = loc->next; | |
2843 | else | |
2844 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2845 | if (tmp->next == loc) | |
2846 | { | |
2847 | tmp->next = loc->next; | |
2848 | break; | |
2849 | } | |
2850 | } | |
2851 | } | |
2852 | ||
2853 | /* Now update the global location list to permanently delete the | |
2854 | removed locations above. */ | |
44702360 | 2855 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2856 | } |
2857 | ||
74960c60 VP |
2858 | /* Make sure all breakpoints are inserted in inferior. |
2859 | Throws exception on any error. | |
2860 | A breakpoint that is already inserted won't be inserted | |
2861 | again, so calling this function twice is safe. */ | |
2862 | void | |
2863 | insert_breakpoints (void) | |
2864 | { | |
2865 | struct breakpoint *bpt; | |
2866 | ||
2867 | ALL_BREAKPOINTS (bpt) | |
2868 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2869 | { |
2870 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2871 | ||
2872 | update_watchpoint (w, 0 /* don't reparse. */); | |
2873 | } | |
74960c60 | 2874 | |
04086b45 PA |
2875 | /* Updating watchpoints creates new locations, so update the global |
2876 | location list. Explicitly tell ugll to insert locations and | |
2877 | ignore breakpoints_always_inserted_mode. */ | |
2878 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2879 | } |
2880 | ||
20388dd6 YQ |
2881 | /* Invoke CALLBACK for each of bp_location. */ |
2882 | ||
2883 | void | |
2884 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2885 | { | |
2886 | struct bp_location *loc, **loc_tmp; | |
2887 | ||
2888 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2889 | { | |
2890 | callback (loc, NULL); | |
2891 | } | |
2892 | } | |
2893 | ||
b775012e LM |
2894 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2895 | target. It is the case with deleting and disabling of breakpoints when using | |
2896 | always-inserted mode. */ | |
2897 | ||
2898 | static void | |
2899 | update_inserted_breakpoint_locations (void) | |
2900 | { | |
2901 | struct bp_location *bl, **blp_tmp; | |
2902 | int error_flag = 0; | |
2903 | int val = 0; | |
2904 | int disabled_breaks = 0; | |
2905 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2906 | int hw_bp_details_reported = 0; |
b775012e | 2907 | |
d7e74731 | 2908 | string_file tmp_error_stream; |
b775012e LM |
2909 | |
2910 | /* Explicitly mark the warning -- this will only be printed if | |
2911 | there was an error. */ | |
d7e74731 | 2912 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2913 | |
5ed8105e | 2914 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2915 | |
2916 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2917 | { | |
2918 | /* We only want to update software breakpoints and hardware | |
2919 | breakpoints. */ | |
2920 | if (!is_breakpoint (bl->owner)) | |
2921 | continue; | |
2922 | ||
2923 | /* We only want to update locations that are already inserted | |
2924 | and need updating. This is to avoid unwanted insertion during | |
2925 | deletion of breakpoints. */ | |
2926 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2927 | continue; | |
2928 | ||
2929 | switch_to_program_space_and_thread (bl->pspace); | |
2930 | ||
2931 | /* For targets that support global breakpoints, there's no need | |
2932 | to select an inferior to insert breakpoint to. In fact, even | |
2933 | if we aren't attached to any process yet, we should still | |
2934 | insert breakpoints. */ | |
f5656ead | 2935 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2936 | && ptid_equal (inferior_ptid, null_ptid)) |
2937 | continue; | |
2938 | ||
d7e74731 | 2939 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2940 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2941 | if (val) |
2942 | error_flag = val; | |
2943 | } | |
2944 | ||
2945 | if (error_flag) | |
2946 | { | |
223ffa71 | 2947 | target_terminal::ours_for_output (); |
b775012e LM |
2948 | error_stream (tmp_error_stream); |
2949 | } | |
b775012e LM |
2950 | } |
2951 | ||
c30eee59 | 2952 | /* Used when starting or continuing the program. */ |
c906108c | 2953 | |
74960c60 VP |
2954 | static void |
2955 | insert_breakpoint_locations (void) | |
c906108c | 2956 | { |
a5606eee | 2957 | struct breakpoint *bpt; |
35df4500 | 2958 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2959 | int error_flag = 0; |
c906108c | 2960 | int val = 0; |
3fbb6ffa | 2961 | int disabled_breaks = 0; |
81d0cc19 | 2962 | int hw_breakpoint_error = 0; |
dd61ec5c | 2963 | int hw_bp_error_explained_already = 0; |
c906108c | 2964 | |
d7e74731 PA |
2965 | string_file tmp_error_stream; |
2966 | ||
81d0cc19 GS |
2967 | /* Explicitly mark the warning -- this will only be printed if |
2968 | there was an error. */ | |
d7e74731 | 2969 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2970 | |
5ed8105e | 2971 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2972 | |
35df4500 | 2973 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2974 | { |
b775012e | 2975 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2976 | continue; |
2977 | ||
4a64f543 MS |
2978 | /* There is no point inserting thread-specific breakpoints if |
2979 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2980 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2981 | if (bl->owner->thread != -1 |
5d5658a1 | 2982 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2983 | continue; |
2984 | ||
35df4500 | 2985 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2986 | |
2987 | /* For targets that support global breakpoints, there's no need | |
2988 | to select an inferior to insert breakpoint to. In fact, even | |
2989 | if we aren't attached to any process yet, we should still | |
2990 | insert breakpoints. */ | |
f5656ead | 2991 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2992 | && ptid_equal (inferior_ptid, null_ptid)) |
2993 | continue; | |
2994 | ||
d7e74731 | 2995 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2996 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2997 | if (val) |
eacd795a | 2998 | error_flag = val; |
879bfdc2 | 2999 | } |
c906108c | 3000 | |
4a64f543 MS |
3001 | /* If we failed to insert all locations of a watchpoint, remove |
3002 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3003 | ALL_BREAKPOINTS (bpt) |
3004 | { | |
3005 | int some_failed = 0; | |
3006 | struct bp_location *loc; | |
3007 | ||
3008 | if (!is_hardware_watchpoint (bpt)) | |
3009 | continue; | |
3010 | ||
d6b74ac4 | 3011 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3012 | continue; |
74960c60 VP |
3013 | |
3014 | if (bpt->disposition == disp_del_at_next_stop) | |
3015 | continue; | |
a5606eee VP |
3016 | |
3017 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3018 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3019 | { |
3020 | some_failed = 1; | |
3021 | break; | |
3022 | } | |
3023 | if (some_failed) | |
3024 | { | |
3025 | for (loc = bpt->loc; loc; loc = loc->next) | |
3026 | if (loc->inserted) | |
834c0d03 | 3027 | remove_breakpoint (loc); |
a5606eee VP |
3028 | |
3029 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3030 | tmp_error_stream.printf ("Could not insert " |
3031 | "hardware watchpoint %d.\n", | |
3032 | bpt->number); | |
eacd795a | 3033 | error_flag = -1; |
a5606eee VP |
3034 | } |
3035 | } | |
3036 | ||
eacd795a | 3037 | if (error_flag) |
81d0cc19 GS |
3038 | { |
3039 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3040 | message about possibly exhausted resources. */ | |
dd61ec5c | 3041 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3042 | { |
d7e74731 | 3043 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3044 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3045 | } |
223ffa71 | 3046 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3047 | error_stream (tmp_error_stream); |
3048 | } | |
c906108c SS |
3049 | } |
3050 | ||
c30eee59 TJB |
3051 | /* Used when the program stops. |
3052 | Returns zero if successful, or non-zero if there was a problem | |
3053 | removing a breakpoint location. */ | |
3054 | ||
c906108c | 3055 | int |
fba45db2 | 3056 | remove_breakpoints (void) |
c906108c | 3057 | { |
35df4500 | 3058 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3059 | int val = 0; |
c906108c | 3060 | |
35df4500 | 3061 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3062 | { |
1e4d1764 | 3063 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3064 | val |= remove_breakpoint (bl); |
c5aa993b | 3065 | } |
3a1bae8e | 3066 | return val; |
c906108c SS |
3067 | } |
3068 | ||
49fa26b0 PA |
3069 | /* When a thread exits, remove breakpoints that are related to |
3070 | that thread. */ | |
3071 | ||
3072 | static void | |
3073 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3074 | { | |
3075 | struct breakpoint *b, *b_tmp; | |
3076 | ||
3077 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3078 | { | |
5d5658a1 | 3079 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3080 | { |
3081 | b->disposition = disp_del_at_next_stop; | |
3082 | ||
3083 | printf_filtered (_("\ | |
43792cf0 PA |
3084 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3085 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3086 | |
3087 | /* Hide it from the user. */ | |
3088 | b->number = 0; | |
3089 | } | |
3090 | } | |
3091 | } | |
3092 | ||
6c95b8df PA |
3093 | /* Remove breakpoints of process PID. */ |
3094 | ||
3095 | int | |
3096 | remove_breakpoints_pid (int pid) | |
3097 | { | |
35df4500 | 3098 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3099 | int val; |
3100 | struct inferior *inf = find_inferior_pid (pid); | |
3101 | ||
35df4500 | 3102 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3103 | { |
35df4500 | 3104 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3105 | continue; |
3106 | ||
fc126975 | 3107 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3108 | { |
834c0d03 | 3109 | val = remove_breakpoint (bl); |
6c95b8df PA |
3110 | if (val != 0) |
3111 | return val; | |
3112 | } | |
3113 | } | |
3114 | return 0; | |
3115 | } | |
3116 | ||
e58b0e63 PA |
3117 | static int internal_breakpoint_number = -1; |
3118 | ||
84f4c1fe PM |
3119 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3120 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3121 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3122 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3123 | breakpoint_count and that value incremented. Internal breakpoints |
3124 | do not set the internal var bpnum. */ | |
3125 | static void | |
3126 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3127 | { | |
3128 | if (internal) | |
3129 | b->number = internal_breakpoint_number--; | |
3130 | else | |
3131 | { | |
3132 | set_breakpoint_count (breakpoint_count + 1); | |
3133 | b->number = breakpoint_count; | |
3134 | } | |
3135 | } | |
3136 | ||
e62c965a | 3137 | static struct breakpoint * |
a6d9a66e | 3138 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3139 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3140 | const struct breakpoint_ops *ops) |
e62c965a | 3141 | { |
51abb421 | 3142 | symtab_and_line sal; |
e62c965a PP |
3143 | sal.pc = address; |
3144 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3145 | sal.pspace = current_program_space; |
e62c965a | 3146 | |
51abb421 | 3147 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3148 | b->number = internal_breakpoint_number--; |
3149 | b->disposition = disp_donttouch; | |
3150 | ||
3151 | return b; | |
3152 | } | |
3153 | ||
17450429 PP |
3154 | static const char *const longjmp_names[] = |
3155 | { | |
3156 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3157 | }; | |
3158 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3159 | ||
3160 | /* Per-objfile data private to breakpoint.c. */ | |
3161 | struct breakpoint_objfile_data | |
3162 | { | |
3163 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3164 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3165 | |
3166 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3167 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3168 | |
28106bc2 | 3169 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3170 | int longjmp_searched = 0; |
28106bc2 | 3171 | |
45461e0d SM |
3172 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3173 | references. */ | |
3174 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3175 | |
17450429 | 3176 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3177 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3178 | |
3179 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3180 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3181 | |
3182 | /* True if we have looked for exception probes. */ | |
43dce439 | 3183 | int exception_searched = 0; |
28106bc2 | 3184 | |
45461e0d SM |
3185 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3186 | references. */ | |
3187 | std::vector<probe *> exception_probes; | |
17450429 PP |
3188 | }; |
3189 | ||
3190 | static const struct objfile_data *breakpoint_objfile_key; | |
3191 | ||
3192 | /* Minimal symbol not found sentinel. */ | |
3193 | static struct minimal_symbol msym_not_found; | |
3194 | ||
3195 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3196 | ||
3197 | static int | |
3198 | msym_not_found_p (const struct minimal_symbol *msym) | |
3199 | { | |
3200 | return msym == &msym_not_found; | |
3201 | } | |
3202 | ||
3203 | /* Return per-objfile data needed by breakpoint.c. | |
3204 | Allocate the data if necessary. */ | |
3205 | ||
3206 | static struct breakpoint_objfile_data * | |
3207 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3208 | { | |
3209 | struct breakpoint_objfile_data *bp_objfile_data; | |
3210 | ||
9a3c8263 SM |
3211 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3212 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3213 | if (bp_objfile_data == NULL) |
3214 | { | |
43dce439 | 3215 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3216 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3217 | } | |
3218 | return bp_objfile_data; | |
3219 | } | |
3220 | ||
28106bc2 | 3221 | static void |
43dce439 | 3222 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3223 | { |
9a3c8263 SM |
3224 | struct breakpoint_objfile_data *bp_objfile_data |
3225 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3226 | |
43dce439 | 3227 | delete bp_objfile_data; |
28106bc2 SDJ |
3228 | } |
3229 | ||
e62c965a | 3230 | static void |
af02033e | 3231 | create_overlay_event_breakpoint (void) |
e62c965a | 3232 | { |
69de3c6a | 3233 | struct objfile *objfile; |
af02033e | 3234 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3235 | |
69de3c6a PP |
3236 | ALL_OBJFILES (objfile) |
3237 | { | |
3238 | struct breakpoint *b; | |
17450429 PP |
3239 | struct breakpoint_objfile_data *bp_objfile_data; |
3240 | CORE_ADDR addr; | |
67994074 | 3241 | struct explicit_location explicit_loc; |
69de3c6a | 3242 | |
17450429 PP |
3243 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3244 | ||
3b7344d5 | 3245 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3246 | continue; |
3247 | ||
3b7344d5 | 3248 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3249 | { |
3b7344d5 | 3250 | struct bound_minimal_symbol m; |
17450429 PP |
3251 | |
3252 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3253 | if (m.minsym == NULL) |
17450429 PP |
3254 | { |
3255 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3256 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3257 | continue; |
3258 | } | |
3259 | bp_objfile_data->overlay_msym = m; | |
3260 | } | |
e62c965a | 3261 | |
77e371c0 | 3262 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3263 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3264 | bp_overlay_event, |
3265 | &internal_breakpoint_ops); | |
67994074 KS |
3266 | initialize_explicit_location (&explicit_loc); |
3267 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3268 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3269 | |
69de3c6a PP |
3270 | if (overlay_debugging == ovly_auto) |
3271 | { | |
3272 | b->enable_state = bp_enabled; | |
3273 | overlay_events_enabled = 1; | |
3274 | } | |
3275 | else | |
3276 | { | |
3277 | b->enable_state = bp_disabled; | |
3278 | overlay_events_enabled = 0; | |
3279 | } | |
e62c965a | 3280 | } |
e62c965a PP |
3281 | } |
3282 | ||
0fd8e87f | 3283 | static void |
af02033e | 3284 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3285 | { |
6c95b8df | 3286 | struct program_space *pspace; |
6c95b8df | 3287 | |
5ed8105e | 3288 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3289 | |
6c95b8df | 3290 | ALL_PSPACES (pspace) |
af02033e PP |
3291 | { |
3292 | struct objfile *objfile; | |
3293 | ||
3294 | set_current_program_space (pspace); | |
3295 | ||
3296 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3297 | { |
af02033e PP |
3298 | int i; |
3299 | struct gdbarch *gdbarch; | |
17450429 | 3300 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3301 | |
af02033e | 3302 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3303 | |
17450429 PP |
3304 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3305 | ||
28106bc2 SDJ |
3306 | if (!bp_objfile_data->longjmp_searched) |
3307 | { | |
45461e0d SM |
3308 | std::vector<probe *> ret |
3309 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3310 | |
45461e0d | 3311 | if (!ret.empty ()) |
25f9533e SDJ |
3312 | { |
3313 | /* We are only interested in checking one element. */ | |
45461e0d | 3314 | probe *p = ret[0]; |
25f9533e SDJ |
3315 | |
3316 | if (!can_evaluate_probe_arguments (p)) | |
3317 | { | |
3318 | /* We cannot use the probe interface here, because it does | |
3319 | not know how to evaluate arguments. */ | |
45461e0d | 3320 | ret.clear (); |
25f9533e SDJ |
3321 | } |
3322 | } | |
3323 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3324 | bp_objfile_data->longjmp_searched = 1; |
3325 | } | |
3326 | ||
45461e0d | 3327 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3328 | { |
28106bc2 SDJ |
3329 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
3330 | ||
45461e0d | 3331 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3332 | { |
3333 | struct breakpoint *b; | |
3334 | ||
729662a5 | 3335 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3336 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3337 | bp_longjmp_master, |
3338 | &internal_breakpoint_ops); | |
d28cd78a | 3339 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3340 | b->enable_state = bp_disabled; |
3341 | } | |
3342 | ||
3343 | continue; | |
3344 | } | |
3345 | ||
0569175e TSD |
3346 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3347 | continue; | |
3348 | ||
17450429 | 3349 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3350 | { |
3351 | struct breakpoint *b; | |
af02033e | 3352 | const char *func_name; |
17450429 | 3353 | CORE_ADDR addr; |
67994074 | 3354 | struct explicit_location explicit_loc; |
6c95b8df | 3355 | |
3b7344d5 | 3356 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3357 | continue; |
0fd8e87f | 3358 | |
17450429 | 3359 | func_name = longjmp_names[i]; |
3b7344d5 | 3360 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3361 | { |
3b7344d5 | 3362 | struct bound_minimal_symbol m; |
17450429 PP |
3363 | |
3364 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3365 | if (m.minsym == NULL) |
17450429 PP |
3366 | { |
3367 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3368 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3369 | continue; |
3370 | } | |
3371 | bp_objfile_data->longjmp_msym[i] = m; | |
3372 | } | |
3373 | ||
77e371c0 | 3374 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3375 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3376 | &internal_breakpoint_ops); | |
67994074 KS |
3377 | initialize_explicit_location (&explicit_loc); |
3378 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3379 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3380 | b->enable_state = bp_disabled; |
3381 | } | |
0fd8e87f | 3382 | } |
af02033e | 3383 | } |
0fd8e87f UW |
3384 | } |
3385 | ||
af02033e | 3386 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3387 | static void |
af02033e | 3388 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3389 | { |
3390 | struct program_space *pspace; | |
af02033e | 3391 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3392 | |
5ed8105e | 3393 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3394 | |
3395 | ALL_PSPACES (pspace) | |
17450429 PP |
3396 | { |
3397 | struct objfile *objfile; | |
3398 | CORE_ADDR addr; | |
3399 | ||
3400 | set_current_program_space (pspace); | |
3401 | ||
aa7d318d TT |
3402 | ALL_OBJFILES (objfile) |
3403 | { | |
3404 | struct breakpoint *b; | |
17450429 | 3405 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3406 | struct explicit_location explicit_loc; |
aa7d318d | 3407 | |
17450429 | 3408 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3409 | |
3b7344d5 | 3410 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3411 | continue; |
3412 | ||
3b7344d5 | 3413 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3414 | { |
3b7344d5 | 3415 | struct bound_minimal_symbol m; |
17450429 PP |
3416 | |
3417 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3418 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3419 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3420 | { |
3421 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3422 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3423 | continue; |
3424 | } | |
3425 | bp_objfile_data->terminate_msym = m; | |
3426 | } | |
aa7d318d | 3427 | |
77e371c0 | 3428 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3429 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3430 | bp_std_terminate_master, |
3431 | &internal_breakpoint_ops); | |
67994074 KS |
3432 | initialize_explicit_location (&explicit_loc); |
3433 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3434 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3435 | b->enable_state = bp_disabled; |
3436 | } | |
17450429 | 3437 | } |
aa7d318d TT |
3438 | } |
3439 | ||
186c406b TT |
3440 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3441 | ||
70221824 | 3442 | static void |
186c406b TT |
3443 | create_exception_master_breakpoint (void) |
3444 | { | |
3445 | struct objfile *objfile; | |
17450429 | 3446 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3447 | |
3448 | ALL_OBJFILES (objfile) | |
3449 | { | |
17450429 PP |
3450 | struct breakpoint *b; |
3451 | struct gdbarch *gdbarch; | |
3452 | struct breakpoint_objfile_data *bp_objfile_data; | |
3453 | CORE_ADDR addr; | |
67994074 | 3454 | struct explicit_location explicit_loc; |
17450429 PP |
3455 | |
3456 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3457 | ||
28106bc2 SDJ |
3458 | /* We prefer the SystemTap probe point if it exists. */ |
3459 | if (!bp_objfile_data->exception_searched) | |
3460 | { | |
45461e0d SM |
3461 | std::vector<probe *> ret |
3462 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3463 | |
45461e0d | 3464 | if (!ret.empty ()) |
25f9533e SDJ |
3465 | { |
3466 | /* We are only interested in checking one element. */ | |
45461e0d | 3467 | probe *p = ret[0]; |
25f9533e SDJ |
3468 | |
3469 | if (!can_evaluate_probe_arguments (p)) | |
3470 | { | |
3471 | /* We cannot use the probe interface here, because it does | |
3472 | not know how to evaluate arguments. */ | |
45461e0d | 3473 | ret.clear (); |
25f9533e SDJ |
3474 | } |
3475 | } | |
3476 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3477 | bp_objfile_data->exception_searched = 1; |
3478 | } | |
3479 | ||
45461e0d | 3480 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 SDJ |
3481 | { |
3482 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3483 | |
3484 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3485 | { |
3486 | struct breakpoint *b; | |
3487 | ||
729662a5 | 3488 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3489 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3490 | bp_exception_master, |
3491 | &internal_breakpoint_ops); | |
d28cd78a | 3492 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3493 | b->enable_state = bp_disabled; |
3494 | } | |
3495 | ||
3496 | continue; | |
3497 | } | |
3498 | ||
3499 | /* Otherwise, try the hook function. */ | |
3500 | ||
3b7344d5 | 3501 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3502 | continue; |
3503 | ||
3504 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3505 | |
3b7344d5 | 3506 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3507 | { |
3b7344d5 | 3508 | struct bound_minimal_symbol debug_hook; |
186c406b | 3509 | |
17450429 | 3510 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3511 | if (debug_hook.minsym == NULL) |
17450429 | 3512 | { |
3b7344d5 | 3513 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3514 | continue; |
3515 | } | |
3516 | ||
3517 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3518 | } |
17450429 | 3519 | |
77e371c0 | 3520 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3521 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3522 | ¤t_target); | |
06edf0c0 PA |
3523 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3524 | &internal_breakpoint_ops); | |
67994074 KS |
3525 | initialize_explicit_location (&explicit_loc); |
3526 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3527 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3528 | b->enable_state = bp_disabled; |
186c406b | 3529 | } |
186c406b TT |
3530 | } |
3531 | ||
9ef9e6a6 KS |
3532 | /* Does B have a location spec? */ |
3533 | ||
3534 | static int | |
3535 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3536 | { | |
d28cd78a | 3537 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3538 | } |
3539 | ||
c906108c | 3540 | void |
fba45db2 | 3541 | update_breakpoints_after_exec (void) |
c906108c | 3542 | { |
35df4500 | 3543 | struct breakpoint *b, *b_tmp; |
876fa593 | 3544 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3545 | |
25b22b0a PA |
3546 | /* We're about to delete breakpoints from GDB's lists. If the |
3547 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3548 | writing the breakpoints' "shadow contents" back into memory. The | |
3549 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3550 | do that. Instead, the target is responsible from marking | |
3551 | breakpoints out as soon as it detects an exec. We don't do that | |
3552 | here instead, because there may be other attempts to delete | |
3553 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3554 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3555 | if (bploc->pspace == current_program_space) |
3556 | gdb_assert (!bploc->inserted); | |
c906108c | 3557 | |
35df4500 | 3558 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3559 | { |
6c95b8df PA |
3560 | if (b->pspace != current_program_space) |
3561 | continue; | |
3562 | ||
4a64f543 | 3563 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3564 | if (b->type == bp_shlib_event) |
3565 | { | |
3566 | delete_breakpoint (b); | |
3567 | continue; | |
3568 | } | |
c906108c | 3569 | |
4a64f543 | 3570 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3571 | if (b->type == bp_jit_event) |
3572 | { | |
3573 | delete_breakpoint (b); | |
3574 | continue; | |
3575 | } | |
3576 | ||
1900040c | 3577 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3578 | as must overlay event and longjmp master breakpoints. */ |
3579 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3580 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3581 | || b->type == bp_exception_master) | |
c4093a6a JM |
3582 | { |
3583 | delete_breakpoint (b); | |
3584 | continue; | |
3585 | } | |
3586 | ||
4a64f543 | 3587 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3588 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3589 | { |
3590 | delete_breakpoint (b); | |
3591 | continue; | |
3592 | } | |
3593 | ||
7c16b83e PA |
3594 | /* Just like single-step breakpoints. */ |
3595 | if (b->type == bp_single_step) | |
3596 | { | |
3597 | delete_breakpoint (b); | |
3598 | continue; | |
3599 | } | |
3600 | ||
611c83ae PA |
3601 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3602 | after an exec. */ | |
186c406b | 3603 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3604 | || b->type == bp_longjmp_call_dummy |
186c406b | 3605 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3606 | { |
3607 | delete_breakpoint (b); | |
3608 | continue; | |
3609 | } | |
3610 | ||
ce78b96d JB |
3611 | if (b->type == bp_catchpoint) |
3612 | { | |
3613 | /* For now, none of the bp_catchpoint breakpoints need to | |
3614 | do anything at this point. In the future, if some of | |
3615 | the catchpoints need to something, we will need to add | |
3616 | a new method, and call this method from here. */ | |
3617 | continue; | |
3618 | } | |
3619 | ||
c5aa993b JM |
3620 | /* bp_finish is a special case. The only way we ought to be able |
3621 | to see one of these when an exec() has happened, is if the user | |
3622 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3623 | carries them to the call-site of the current callee, by setting | |
3624 | a temporary bp there and resuming. But in this case, the finish | |
3625 | will carry them entirely through the vfork & exec. | |
3626 | ||
3627 | We don't want to allow a bp_finish to remain inserted now. But | |
3628 | we can't safely delete it, 'cause finish_command has a handle to | |
3629 | the bp on a bpstat, and will later want to delete it. There's a | |
3630 | chance (and I've seen it happen) that if we delete the bp_finish | |
3631 | here, that its storage will get reused by the time finish_command | |
3632 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3633 | We really must allow finish_command to delete a bp_finish. | |
3634 | ||
e5dd4106 | 3635 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3636 | it's safe to delete something others may have handles to?" |
3637 | problem, what we'll do here is just uninsert the bp_finish, and | |
3638 | let finish_command delete it. | |
3639 | ||
3640 | (We know the bp_finish is "doomed" in the sense that it's | |
3641 | momentary, and will be deleted as soon as finish_command sees | |
3642 | the inferior stopped. So it doesn't matter that the bp's | |
3643 | address is probably bogus in the new a.out, unlike e.g., the | |
3644 | solib breakpoints.) */ | |
c5aa993b | 3645 | |
c5aa993b JM |
3646 | if (b->type == bp_finish) |
3647 | { | |
3648 | continue; | |
3649 | } | |
3650 | ||
3651 | /* Without a symbolic address, we have little hope of the | |
3652 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3653 | a.out. */ |
9ef9e6a6 | 3654 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3655 | { |
3656 | delete_breakpoint (b); | |
3657 | continue; | |
3658 | } | |
c5aa993b | 3659 | } |
c906108c SS |
3660 | } |
3661 | ||
3662 | int | |
d80ee84f | 3663 | detach_breakpoints (ptid_t ptid) |
c906108c | 3664 | { |
35df4500 | 3665 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3666 | int val = 0; |
2989a365 | 3667 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3668 | struct inferior *inf = current_inferior (); |
c5aa993b | 3669 | |
dfd4cc63 | 3670 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3671 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3672 | |
6c95b8df | 3673 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3674 | inferior_ptid = ptid; |
35df4500 | 3675 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3676 | { |
35df4500 | 3677 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3678 | continue; |
3679 | ||
bd9673a4 PW |
3680 | /* This function must physically remove breakpoints locations |
3681 | from the specified ptid, without modifying the breakpoint | |
3682 | package's state. Locations of type bp_loc_other are only | |
3683 | maintained at GDB side. So, there is no need to remove | |
3684 | these bp_loc_other locations. Moreover, removing these | |
3685 | would modify the breakpoint package's state. */ | |
3686 | if (bl->loc_type == bp_loc_other) | |
3687 | continue; | |
3688 | ||
35df4500 | 3689 | if (bl->inserted) |
b2b6a7da | 3690 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3691 | } |
d03285ec | 3692 | |
3a1bae8e | 3693 | return val; |
c906108c SS |
3694 | } |
3695 | ||
35df4500 | 3696 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3697 | Note that this is used to detach breakpoints from a child fork. |
3698 | When we get here, the child isn't in the inferior list, and neither | |
3699 | do we have objects to represent its address space --- we should | |
35df4500 | 3700 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3701 | |
c906108c | 3702 | static int |
b2b6a7da | 3703 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3704 | { |
3705 | int val; | |
c5aa993b | 3706 | |
35df4500 TJB |
3707 | /* BL is never in moribund_locations by our callers. */ |
3708 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3709 | |
74960c60 VP |
3710 | /* The type of none suggests that owner is actually deleted. |
3711 | This should not ever happen. */ | |
35df4500 | 3712 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3713 | |
35df4500 TJB |
3714 | if (bl->loc_type == bp_loc_software_breakpoint |
3715 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3716 | { |
c02f5703 MS |
3717 | /* "Normal" instruction breakpoint: either the standard |
3718 | trap-instruction bp (bp_breakpoint), or a | |
3719 | bp_hardware_breakpoint. */ | |
3720 | ||
3721 | /* First check to see if we have to handle an overlay. */ | |
3722 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3723 | || bl->section == NULL |
3724 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3725 | { |
3726 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3727 | |
3728 | /* If we're trying to uninsert a memory breakpoint that we | |
3729 | know is set in a dynamic object that is marked | |
3730 | shlib_disabled, then either the dynamic object was | |
3731 | removed with "remove-symbol-file" or with | |
3732 | "nosharedlibrary". In the former case, we don't know | |
3733 | whether another dynamic object might have loaded over the | |
3734 | breakpoint's address -- the user might well let us know | |
3735 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3736 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3737 | list of dynamically loaded objects). If we have the |
3738 | breakpoint's shadow memory, that is, this is a software | |
3739 | breakpoint managed by GDB, check whether the breakpoint | |
3740 | is still inserted in memory, to avoid overwriting wrong | |
3741 | code with stale saved shadow contents. Note that HW | |
3742 | breakpoints don't have shadow memory, as they're | |
3743 | implemented using a mechanism that is not dependent on | |
3744 | being able to modify the target's memory, and as such | |
3745 | they should always be removed. */ | |
3746 | if (bl->shlib_disabled | |
3747 | && bl->target_info.shadow_len != 0 | |
3748 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3749 | val = 0; | |
3750 | else | |
73971819 | 3751 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3752 | } |
c906108c SS |
3753 | else |
3754 | { | |
4a64f543 | 3755 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3756 | Did we set a breakpoint at the LMA? */ |
3757 | if (!overlay_events_enabled) | |
3758 | { | |
3759 | /* Yes -- overlay event support is not active, so we | |
3760 | should have set a breakpoint at the LMA. Remove it. | |
3761 | */ | |
c02f5703 MS |
3762 | /* Ignore any failures: if the LMA is in ROM, we will |
3763 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3764 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3765 | target_remove_hw_breakpoint (bl->gdbarch, | |
3766 | &bl->overlay_target_info); | |
c02f5703 | 3767 | else |
35df4500 | 3768 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3769 | &bl->overlay_target_info, |
3770 | reason); | |
c02f5703 MS |
3771 | } |
3772 | /* Did we set a breakpoint at the VMA? | |
3773 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3774 | if (bl->inserted) |
c906108c | 3775 | { |
c02f5703 MS |
3776 | /* Yes -- remove it. Previously we did not bother to |
3777 | remove the breakpoint if the section had been | |
3778 | unmapped, but let's not rely on that being safe. We | |
3779 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3780 | |
3781 | /* However, we should remove *software* breakpoints only | |
3782 | if the section is still mapped, or else we overwrite | |
3783 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3784 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3785 | || section_is_mapped (bl->section)) | |
73971819 | 3786 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3787 | else |
3788 | val = 0; | |
c906108c | 3789 | } |
c02f5703 MS |
3790 | else |
3791 | { | |
3792 | /* No -- not inserted, so no need to remove. No error. */ | |
3793 | val = 0; | |
3794 | } | |
c906108c | 3795 | } |
879d1e6b | 3796 | |
08351840 PA |
3797 | /* In some cases, we might not be able to remove a breakpoint in |
3798 | a shared library that has already been removed, but we have | |
3799 | not yet processed the shlib unload event. Similarly for an | |
3800 | unloaded add-symbol-file object - the user might not yet have | |
3801 | had the chance to remove-symbol-file it. shlib_disabled will | |
3802 | be set if the library/object has already been removed, but | |
3803 | the breakpoint hasn't been uninserted yet, e.g., after | |
3804 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3805 | always-inserted mode. */ | |
076855f9 | 3806 | if (val |
08351840 PA |
3807 | && (bl->loc_type == bp_loc_software_breakpoint |
3808 | && (bl->shlib_disabled | |
3809 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3810 | || shared_objfile_contains_address_p (bl->pspace, |
3811 | bl->address)))) | |
879d1e6b UW |
3812 | val = 0; |
3813 | ||
c906108c SS |
3814 | if (val) |
3815 | return val; | |
b2b6a7da | 3816 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3817 | } |
35df4500 | 3818 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3819 | { |
77b06cd7 TJB |
3820 | gdb_assert (bl->owner->ops != NULL |
3821 | && bl->owner->ops->remove_location != NULL); | |
3822 | ||
b2b6a7da | 3823 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3824 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3825 | |
c906108c | 3826 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3827 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3828 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3829 | bl->owner->number); |
c906108c | 3830 | } |
35df4500 TJB |
3831 | else if (bl->owner->type == bp_catchpoint |
3832 | && breakpoint_enabled (bl->owner) | |
3833 | && !bl->duplicate) | |
ce78b96d | 3834 | { |
77b06cd7 TJB |
3835 | gdb_assert (bl->owner->ops != NULL |
3836 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3837 | |
73971819 | 3838 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3839 | if (val) |
3840 | return val; | |
77b06cd7 | 3841 | |
b2b6a7da | 3842 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3843 | } |
c906108c SS |
3844 | |
3845 | return 0; | |
3846 | } | |
3847 | ||
6c95b8df | 3848 | static int |
834c0d03 | 3849 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3850 | { |
35df4500 TJB |
3851 | /* BL is never in moribund_locations by our callers. */ |
3852 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3853 | |
6c95b8df PA |
3854 | /* The type of none suggests that owner is actually deleted. |
3855 | This should not ever happen. */ | |
35df4500 | 3856 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3857 | |
5ed8105e | 3858 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3859 | |
35df4500 | 3860 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3861 | |
5ed8105e | 3862 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3863 | } |
3864 | ||
c906108c SS |
3865 | /* Clear the "inserted" flag in all breakpoints. */ |
3866 | ||
25b22b0a | 3867 | void |
fba45db2 | 3868 | mark_breakpoints_out (void) |
c906108c | 3869 | { |
35df4500 | 3870 | struct bp_location *bl, **blp_tmp; |
c906108c | 3871 | |
35df4500 | 3872 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3873 | if (bl->pspace == current_program_space) |
35df4500 | 3874 | bl->inserted = 0; |
c906108c SS |
3875 | } |
3876 | ||
53a5351d JM |
3877 | /* Clear the "inserted" flag in all breakpoints and delete any |
3878 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3879 | |
3880 | Plus other such housekeeping that has to be done for breakpoints | |
3881 | between runs. | |
3882 | ||
53a5351d JM |
3883 | Note: this function gets called at the end of a run (by |
3884 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3885 | init_wait_for_inferior). */ |
c906108c SS |
3886 | |
3887 | ||
3888 | ||
3889 | void | |
fba45db2 | 3890 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3891 | { |
35df4500 | 3892 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3893 | struct bp_location *bl; |
1c5cfe86 | 3894 | int ix; |
6c95b8df | 3895 | struct program_space *pspace = current_program_space; |
c906108c | 3896 | |
50c71eaf PA |
3897 | /* If breakpoint locations are shared across processes, then there's |
3898 | nothing to do. */ | |
f5656ead | 3899 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3900 | return; |
3901 | ||
1a853c52 | 3902 | mark_breakpoints_out (); |
075f6582 | 3903 | |
35df4500 | 3904 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3905 | { |
6c95b8df PA |
3906 | if (b->loc && b->loc->pspace != pspace) |
3907 | continue; | |
3908 | ||
c5aa993b JM |
3909 | switch (b->type) |
3910 | { | |
3911 | case bp_call_dummy: | |
e2e4d78b | 3912 | case bp_longjmp_call_dummy: |
c906108c | 3913 | |
c5aa993b | 3914 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3915 | cause problems when the inferior is rerun, so we better get |
3916 | rid of it. */ | |
3917 | ||
3918 | case bp_watchpoint_scope: | |
3919 | ||
3920 | /* Also get rid of scope breakpoints. */ | |
3921 | ||
3922 | case bp_shlib_event: | |
3923 | ||
3924 | /* Also remove solib event breakpoints. Their addresses may | |
3925 | have changed since the last time we ran the program. | |
3926 | Actually we may now be debugging against different target; | |
3927 | and so the solib backend that installed this breakpoint may | |
3928 | not be used in by the target. E.g., | |
3929 | ||
3930 | (gdb) file prog-linux | |
3931 | (gdb) run # native linux target | |
3932 | ... | |
3933 | (gdb) kill | |
3934 | (gdb) file prog-win.exe | |
3935 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3936 | */ | |
c906108c | 3937 | |
f59f708a PA |
3938 | case bp_step_resume: |
3939 | ||
3940 | /* Also remove step-resume breakpoints. */ | |
3941 | ||
7c16b83e PA |
3942 | case bp_single_step: |
3943 | ||
3944 | /* Also remove single-step breakpoints. */ | |
3945 | ||
c5aa993b JM |
3946 | delete_breakpoint (b); |
3947 | break; | |
c906108c | 3948 | |
c5aa993b JM |
3949 | case bp_watchpoint: |
3950 | case bp_hardware_watchpoint: | |
3951 | case bp_read_watchpoint: | |
3952 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3953 | { |
3954 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3955 | |
3a5c3e22 PA |
3956 | /* Likewise for watchpoints on local expressions. */ |
3957 | if (w->exp_valid_block != NULL) | |
3958 | delete_breakpoint (b); | |
63000888 | 3959 | else |
3a5c3e22 | 3960 | { |
63000888 PA |
3961 | /* Get rid of existing locations, which are no longer |
3962 | valid. New ones will be created in | |
3963 | update_watchpoint, when the inferior is restarted. | |
3964 | The next update_global_location_list call will | |
3965 | garbage collect them. */ | |
3966 | b->loc = NULL; | |
3967 | ||
3968 | if (context == inf_starting) | |
3969 | { | |
3970 | /* Reset val field to force reread of starting value in | |
3971 | insert_breakpoints. */ | |
3972 | if (w->val) | |
3973 | value_free (w->val); | |
3974 | w->val = NULL; | |
3975 | w->val_valid = 0; | |
3976 | } | |
3977 | } | |
3a5c3e22 | 3978 | } |
c5aa993b JM |
3979 | break; |
3980 | default: | |
c5aa993b JM |
3981 | break; |
3982 | } | |
3983 | } | |
1c5cfe86 PA |
3984 | |
3985 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3986 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3987 | decref_bp_location (&bl); | |
1c5cfe86 | 3988 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3989 | } |
3990 | ||
6c95b8df PA |
3991 | /* These functions concern about actual breakpoints inserted in the |
3992 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3993 | we need to hop over the bkpt --- so we check for address space | |
3994 | match, not program space. */ | |
3995 | ||
c2c6d25f JM |
3996 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3997 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3998 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3999 | permanent breakpoint. | |
4000 | - When continuing from a location with an ordinary breakpoint, we | |
4001 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4002 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4003 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4004 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4005 | |
c2c6d25f | 4006 | enum breakpoint_here |
accd0bcd | 4007 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4008 | { |
35df4500 | 4009 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4010 | int any_breakpoint_here = 0; |
c906108c | 4011 | |
35df4500 | 4012 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4013 | { |
35df4500 TJB |
4014 | if (bl->loc_type != bp_loc_software_breakpoint |
4015 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4016 | continue; |
4017 | ||
f1310107 | 4018 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4019 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4020 | || bl->permanent) |
f1310107 | 4021 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4022 | { |
4023 | if (overlay_debugging | |
35df4500 TJB |
4024 | && section_is_overlay (bl->section) |
4025 | && !section_is_mapped (bl->section)) | |
075f6582 | 4026 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4027 | else if (bl->permanent) |
075f6582 DJ |
4028 | return permanent_breakpoint_here; |
4029 | else | |
4030 | any_breakpoint_here = 1; | |
4031 | } | |
4032 | } | |
c906108c | 4033 | |
f486487f | 4034 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4035 | } |
4036 | ||
d35ae833 PA |
4037 | /* See breakpoint.h. */ |
4038 | ||
4039 | int | |
accd0bcd | 4040 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4041 | CORE_ADDR addr, ULONGEST len) |
4042 | { | |
4043 | struct bp_location *bl, **blp_tmp; | |
4044 | ||
4045 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4046 | { | |
4047 | if (bl->loc_type != bp_loc_software_breakpoint | |
4048 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4049 | continue; | |
4050 | ||
4051 | if ((breakpoint_enabled (bl->owner) | |
4052 | || bl->permanent) | |
4053 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4054 | addr, len)) | |
4055 | { | |
4056 | if (overlay_debugging | |
4057 | && section_is_overlay (bl->section) | |
4058 | && !section_is_mapped (bl->section)) | |
4059 | { | |
4060 | /* Unmapped overlay -- can't be a match. */ | |
4061 | continue; | |
4062 | } | |
4063 | ||
4064 | return 1; | |
4065 | } | |
4066 | } | |
4067 | ||
4068 | return 0; | |
4069 | } | |
4070 | ||
1c5cfe86 PA |
4071 | /* Return true if there's a moribund breakpoint at PC. */ |
4072 | ||
4073 | int | |
accd0bcd | 4074 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4075 | { |
4076 | struct bp_location *loc; | |
4077 | int ix; | |
4078 | ||
4079 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4080 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4081 | return 1; |
4082 | ||
4083 | return 0; | |
4084 | } | |
c2c6d25f | 4085 | |
f7ce857f PA |
4086 | /* Returns non-zero iff BL is inserted at PC, in address space |
4087 | ASPACE. */ | |
4088 | ||
4089 | static int | |
4090 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4091 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4092 | { |
4093 | if (bl->inserted | |
4094 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4095 | aspace, pc)) | |
4096 | { | |
4097 | if (overlay_debugging | |
4098 | && section_is_overlay (bl->section) | |
4099 | && !section_is_mapped (bl->section)) | |
4100 | return 0; /* unmapped overlay -- can't be a match */ | |
4101 | else | |
4102 | return 1; | |
4103 | } | |
4104 | return 0; | |
4105 | } | |
4106 | ||
a1fd2fa5 | 4107 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4108 | |
4109 | int | |
accd0bcd | 4110 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4111 | { |
f7ce857f | 4112 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4113 | |
f7ce857f | 4114 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4115 | { |
f7ce857f PA |
4116 | struct bp_location *bl = *blp; |
4117 | ||
35df4500 TJB |
4118 | if (bl->loc_type != bp_loc_software_breakpoint |
4119 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4120 | continue; |
4121 | ||
f7ce857f PA |
4122 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4123 | return 1; | |
c5aa993b | 4124 | } |
c36b740a VP |
4125 | return 0; |
4126 | } | |
4127 | ||
a1fd2fa5 PA |
4128 | /* This function returns non-zero iff there is a software breakpoint |
4129 | inserted at PC. */ | |
c36b740a VP |
4130 | |
4131 | int | |
accd0bcd | 4132 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4133 | CORE_ADDR pc) |
4fa8626c | 4134 | { |
f7ce857f | 4135 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4136 | |
f7ce857f | 4137 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4138 | { |
f7ce857f PA |
4139 | struct bp_location *bl = *blp; |
4140 | ||
35df4500 | 4141 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4142 | continue; |
4143 | ||
f7ce857f PA |
4144 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4145 | return 1; | |
4fa8626c DJ |
4146 | } |
4147 | ||
4148 | return 0; | |
9c02b525 PA |
4149 | } |
4150 | ||
4151 | /* See breakpoint.h. */ | |
4152 | ||
4153 | int | |
accd0bcd | 4154 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4155 | CORE_ADDR pc) |
4156 | { | |
4157 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4158 | |
4159 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4160 | { | |
4161 | struct bp_location *bl = *blp; | |
4162 | ||
4163 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4164 | continue; | |
4165 | ||
4166 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4167 | return 1; | |
4168 | } | |
4169 | ||
4170 | return 0; | |
4fa8626c DJ |
4171 | } |
4172 | ||
9093389c | 4173 | int |
accd0bcd | 4174 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4175 | CORE_ADDR addr, ULONGEST len) |
4176 | { | |
4177 | struct breakpoint *bpt; | |
4178 | ||
4179 | ALL_BREAKPOINTS (bpt) | |
4180 | { | |
4181 | struct bp_location *loc; | |
4182 | ||
4183 | if (bpt->type != bp_hardware_watchpoint | |
4184 | && bpt->type != bp_access_watchpoint) | |
4185 | continue; | |
4186 | ||
4187 | if (!breakpoint_enabled (bpt)) | |
4188 | continue; | |
4189 | ||
4190 | for (loc = bpt->loc; loc; loc = loc->next) | |
4191 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4192 | { | |
4193 | CORE_ADDR l, h; | |
4194 | ||
4195 | /* Check for intersection. */ | |
768adc05 PA |
4196 | l = std::max<CORE_ADDR> (loc->address, addr); |
4197 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4198 | if (l < h) |
4199 | return 1; | |
4200 | } | |
4201 | } | |
4202 | return 0; | |
4203 | } | |
c906108c | 4204 | \f |
c5aa993b | 4205 | |
c906108c SS |
4206 | /* bpstat stuff. External routines' interfaces are documented |
4207 | in breakpoint.h. */ | |
4208 | ||
4209 | int | |
c326b90e | 4210 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4211 | { |
533be4dd | 4212 | return (ep->type == bp_catchpoint); |
c906108c SS |
4213 | } |
4214 | ||
f431efe5 PA |
4215 | /* Frees any storage that is part of a bpstat. Does not walk the |
4216 | 'next' chain. */ | |
4217 | ||
04afa70c | 4218 | bpstats::~bpstats () |
198757a8 | 4219 | { |
04afa70c TT |
4220 | if (old_val != NULL) |
4221 | value_free (old_val); | |
04afa70c TT |
4222 | if (bp_location_at != NULL) |
4223 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4224 | } |
4225 | ||
c906108c SS |
4226 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4227 | Also free any storage that is part of a bpstat. */ | |
4228 | ||
4229 | void | |
fba45db2 | 4230 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4231 | { |
4232 | bpstat p; | |
4233 | bpstat q; | |
4234 | ||
4235 | if (bsp == 0) | |
4236 | return; | |
4237 | p = *bsp; | |
4238 | while (p != NULL) | |
4239 | { | |
4240 | q = p->next; | |
04afa70c | 4241 | delete p; |
c906108c SS |
4242 | p = q; |
4243 | } | |
4244 | *bsp = NULL; | |
4245 | } | |
4246 | ||
04afa70c TT |
4247 | bpstats::bpstats (const bpstats &other) |
4248 | : next (NULL), | |
4249 | bp_location_at (other.bp_location_at), | |
4250 | breakpoint_at (other.breakpoint_at), | |
4251 | commands (other.commands), | |
4252 | old_val (other.old_val), | |
4253 | print (other.print), | |
4254 | stop (other.stop), | |
4255 | print_it (other.print_it) | |
4256 | { | |
4257 | if (old_val != NULL) | |
4258 | { | |
4259 | old_val = value_copy (old_val); | |
4260 | release_value (old_val); | |
4261 | } | |
4262 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4263 | } |
4264 | ||
c906108c SS |
4265 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4266 | is part of the bpstat is copied as well. */ | |
4267 | ||
4268 | bpstat | |
fba45db2 | 4269 | bpstat_copy (bpstat bs) |
c906108c SS |
4270 | { |
4271 | bpstat p = NULL; | |
4272 | bpstat tmp; | |
4273 | bpstat retval = NULL; | |
4274 | ||
4275 | if (bs == NULL) | |
4276 | return bs; | |
4277 | ||
4278 | for (; bs != NULL; bs = bs->next) | |
4279 | { | |
04afa70c | 4280 | tmp = new bpstats (*bs); |
31cc81e9 | 4281 | |
c906108c SS |
4282 | if (p == NULL) |
4283 | /* This is the first thing in the chain. */ | |
4284 | retval = tmp; | |
4285 | else | |
4286 | p->next = tmp; | |
4287 | p = tmp; | |
4288 | } | |
4289 | p->next = NULL; | |
4290 | return retval; | |
4291 | } | |
4292 | ||
4a64f543 | 4293 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4294 | |
4295 | bpstat | |
fba45db2 | 4296 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4297 | { |
c5aa993b JM |
4298 | if (bsp == NULL) |
4299 | return NULL; | |
c906108c | 4300 | |
c5aa993b JM |
4301 | for (; bsp != NULL; bsp = bsp->next) |
4302 | { | |
f431efe5 | 4303 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4304 | return bsp; |
4305 | } | |
c906108c SS |
4306 | return NULL; |
4307 | } | |
4308 | ||
ab04a2af TT |
4309 | /* See breakpoint.h. */ |
4310 | ||
47591c29 | 4311 | int |
427cd150 | 4312 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4313 | { |
ab04a2af TT |
4314 | for (; bsp != NULL; bsp = bsp->next) |
4315 | { | |
427cd150 TT |
4316 | if (bsp->breakpoint_at == NULL) |
4317 | { | |
4318 | /* A moribund location can never explain a signal other than | |
4319 | GDB_SIGNAL_TRAP. */ | |
4320 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4321 | return 1; |
427cd150 TT |
4322 | } |
4323 | else | |
47591c29 PA |
4324 | { |
4325 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4326 | sig)) | |
4327 | return 1; | |
4328 | } | |
ab04a2af TT |
4329 | } |
4330 | ||
47591c29 | 4331 | return 0; |
ab04a2af TT |
4332 | } |
4333 | ||
4a64f543 MS |
4334 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4335 | stopped at. *BSP upon return is a bpstat which points to the | |
4336 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4337 | good for anything but further calls to bpstat_num). | |
4338 | ||
8671a17b PA |
4339 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4340 | Return -1 if stopped at a breakpoint that has been deleted since | |
4341 | we set it. | |
4342 | Return 1 otherwise. */ | |
c906108c SS |
4343 | |
4344 | int | |
8671a17b | 4345 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4346 | { |
4347 | struct breakpoint *b; | |
4348 | ||
4349 | if ((*bsp) == NULL) | |
4350 | return 0; /* No more breakpoint values */ | |
8671a17b | 4351 | |
4a64f543 MS |
4352 | /* We assume we'll never have several bpstats that correspond to a |
4353 | single breakpoint -- otherwise, this function might return the | |
4354 | same number more than once and this will look ugly. */ | |
f431efe5 | 4355 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4356 | *bsp = (*bsp)->next; |
4357 | if (b == NULL) | |
4358 | return -1; /* breakpoint that's been deleted since */ | |
4359 | ||
4360 | *num = b->number; /* We have its number */ | |
4361 | return 1; | |
c906108c SS |
4362 | } |
4363 | ||
e93ca019 | 4364 | /* See breakpoint.h. */ |
c906108c SS |
4365 | |
4366 | void | |
e93ca019 | 4367 | bpstat_clear_actions (void) |
c906108c | 4368 | { |
e93ca019 JK |
4369 | struct thread_info *tp; |
4370 | bpstat bs; | |
4371 | ||
4372 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4373 | return; | |
4374 | ||
4375 | tp = find_thread_ptid (inferior_ptid); | |
4376 | if (tp == NULL) | |
4377 | return; | |
4378 | ||
4379 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4380 | { |
d1b0a7bf | 4381 | bs->commands = NULL; |
abf85f46 | 4382 | |
c906108c SS |
4383 | if (bs->old_val != NULL) |
4384 | { | |
4385 | value_free (bs->old_val); | |
4386 | bs->old_val = NULL; | |
4387 | } | |
4388 | } | |
4389 | } | |
4390 | ||
f3b1572e PA |
4391 | /* Called when a command is about to proceed the inferior. */ |
4392 | ||
4393 | static void | |
4394 | breakpoint_about_to_proceed (void) | |
4395 | { | |
4396 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4397 | { | |
4398 | struct thread_info *tp = inferior_thread (); | |
4399 | ||
4400 | /* Allow inferior function calls in breakpoint commands to not | |
4401 | interrupt the command list. When the call finishes | |
4402 | successfully, the inferior will be standing at the same | |
4403 | breakpoint as if nothing happened. */ | |
16c381f0 | 4404 | if (tp->control.in_infcall) |
f3b1572e PA |
4405 | return; |
4406 | } | |
4407 | ||
4408 | breakpoint_proceeded = 1; | |
4409 | } | |
4410 | ||
abf85f46 JK |
4411 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4412 | or its equivalent. */ | |
4413 | ||
4414 | static int | |
4415 | command_line_is_silent (struct command_line *cmd) | |
4416 | { | |
4f45d445 | 4417 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4418 | } |
4419 | ||
4a64f543 MS |
4420 | /* Execute all the commands associated with all the breakpoints at |
4421 | this location. Any of these commands could cause the process to | |
4422 | proceed beyond this point, etc. We look out for such changes by | |
4423 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4424 | |
347bddb7 PA |
4425 | Returns true if a breakpoint command resumed the inferior. In that |
4426 | case, it is the caller's responsibility to recall it again with the | |
4427 | bpstat of the current thread. */ | |
4428 | ||
4429 | static int | |
4430 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4431 | { |
4432 | bpstat bs; | |
347bddb7 | 4433 | int again = 0; |
c906108c SS |
4434 | |
4435 | /* Avoid endless recursion if a `source' command is contained | |
4436 | in bs->commands. */ | |
4437 | if (executing_breakpoint_commands) | |
347bddb7 | 4438 | return 0; |
c906108c | 4439 | |
81b1e71c TT |
4440 | scoped_restore save_executing |
4441 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4442 | |
1ac32117 | 4443 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4444 | |
4a64f543 | 4445 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4446 | bs = *bsp; |
4447 | ||
4448 | breakpoint_proceeded = 0; | |
4449 | for (; bs != NULL; bs = bs->next) | |
4450 | { | |
d1b0a7bf | 4451 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4452 | |
4453 | /* Take ownership of the BSP's command tree, if it has one. | |
4454 | ||
4455 | The command tree could legitimately contain commands like | |
4456 | 'step' and 'next', which call clear_proceed_status, which | |
4457 | frees stop_bpstat's command tree. To make sure this doesn't | |
4458 | free the tree we're executing out from under us, we need to | |
4459 | take ownership of the tree ourselves. Since a given bpstat's | |
4460 | commands are only executed once, we don't need to copy it; we | |
4461 | can clear the pointer in the bpstat, and make sure we free | |
4462 | the tree when we're done. */ | |
d1b0a7bf | 4463 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4464 | bs->commands = NULL; |
d1b0a7bf TT |
4465 | if (ccmd != NULL) |
4466 | cmd = ccmd.get (); | |
abf85f46 JK |
4467 | if (command_line_is_silent (cmd)) |
4468 | { | |
4469 | /* The action has been already done by bpstat_stop_status. */ | |
4470 | cmd = cmd->next; | |
4471 | } | |
6c50ab1c | 4472 | |
c906108c SS |
4473 | while (cmd != NULL) |
4474 | { | |
4475 | execute_control_command (cmd); | |
4476 | ||
4477 | if (breakpoint_proceeded) | |
4478 | break; | |
4479 | else | |
4480 | cmd = cmd->next; | |
4481 | } | |
6c50ab1c | 4482 | |
c906108c | 4483 | if (breakpoint_proceeded) |
32c1e744 | 4484 | { |
cb814510 | 4485 | if (current_ui->async) |
347bddb7 PA |
4486 | /* If we are in async mode, then the target might be still |
4487 | running, not stopped at any breakpoint, so nothing for | |
4488 | us to do here -- just return to the event loop. */ | |
4489 | ; | |
32c1e744 VP |
4490 | else |
4491 | /* In sync mode, when execute_control_command returns | |
4492 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4493 | Breakpoint commands for that stop were not run, since |
4494 | execute_command does not run breakpoint commands -- | |
4495 | only command_line_handler does, but that one is not | |
4496 | involved in execution of breakpoint commands. So, we | |
4497 | can now execute breakpoint commands. It should be | |
4498 | noted that making execute_command do bpstat actions is | |
4499 | not an option -- in this case we'll have recursive | |
4500 | invocation of bpstat for each breakpoint with a | |
4501 | command, and can easily blow up GDB stack. Instead, we | |
4502 | return true, which will trigger the caller to recall us | |
4503 | with the new stop_bpstat. */ | |
4504 | again = 1; | |
4505 | break; | |
32c1e744 | 4506 | } |
c906108c | 4507 | } |
347bddb7 PA |
4508 | return again; |
4509 | } | |
4510 | ||
4511 | void | |
4512 | bpstat_do_actions (void) | |
4513 | { | |
353d1d73 JK |
4514 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4515 | ||
347bddb7 PA |
4516 | /* Do any commands attached to breakpoint we are stopped at. */ |
4517 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4518 | && target_has_execution | |
4519 | && !is_exited (inferior_ptid) | |
4520 | && !is_executing (inferior_ptid)) | |
4521 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4522 | and only return when it is stopped at the next breakpoint, we | |
4523 | keep doing breakpoint actions until it returns false to | |
4524 | indicate the inferior was not resumed. */ | |
16c381f0 | 4525 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4526 | break; |
353d1d73 JK |
4527 | |
4528 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4529 | } |
4530 | ||
fa4727a6 DJ |
4531 | /* Print out the (old or new) value associated with a watchpoint. */ |
4532 | ||
4533 | static void | |
4534 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4535 | { | |
4536 | if (val == NULL) | |
4537 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4538 | else | |
79a45b7d TT |
4539 | { |
4540 | struct value_print_options opts; | |
4541 | get_user_print_options (&opts); | |
4542 | value_print (val, stream, &opts); | |
4543 | } | |
fa4727a6 DJ |
4544 | } |
4545 | ||
f303dbd6 PA |
4546 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4547 | debugging multiple threads. */ | |
4548 | ||
4549 | void | |
4550 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4551 | { | |
112e8700 | 4552 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4553 | return; |
4554 | ||
112e8700 | 4555 | uiout->text ("\n"); |
f303dbd6 PA |
4556 | |
4557 | if (show_thread_that_caused_stop ()) | |
4558 | { | |
4559 | const char *name; | |
4560 | struct thread_info *thr = inferior_thread (); | |
4561 | ||
112e8700 SM |
4562 | uiout->text ("Thread "); |
4563 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4564 | |
4565 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4566 | if (name != NULL) | |
4567 | { | |
112e8700 SM |
4568 | uiout->text (" \""); |
4569 | uiout->field_fmt ("name", "%s", name); | |
4570 | uiout->text ("\""); | |
f303dbd6 PA |
4571 | } |
4572 | ||
112e8700 | 4573 | uiout->text (" hit "); |
f303dbd6 PA |
4574 | } |
4575 | } | |
4576 | ||
e514a9d6 | 4577 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4578 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4579 | 'print_it' in the bpstat structure. Under some circumstances we |
4580 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4581 | normal_stop(). */ |
e514a9d6 JM |
4582 | |
4583 | static enum print_stop_action | |
4584 | print_bp_stop_message (bpstat bs) | |
4585 | { | |
4586 | switch (bs->print_it) | |
4587 | { | |
4588 | case print_it_noop: | |
4a64f543 | 4589 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4590 | return PRINT_UNKNOWN; |
4591 | break; | |
4592 | ||
4593 | case print_it_done: | |
4594 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4595 | relevant messages. */ |
e514a9d6 JM |
4596 | return PRINT_SRC_AND_LOC; |
4597 | break; | |
4598 | ||
4599 | case print_it_normal: | |
4f8d1dc6 | 4600 | { |
f431efe5 PA |
4601 | struct breakpoint *b = bs->breakpoint_at; |
4602 | ||
1a6a67de TJB |
4603 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4604 | which has since been deleted. */ | |
4605 | if (b == NULL) | |
4606 | return PRINT_UNKNOWN; | |
4607 | ||
348d480f PA |
4608 | /* Normal case. Call the breakpoint's print_it method. */ |
4609 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4610 | } |
348d480f | 4611 | break; |
3086aeae | 4612 | |
e514a9d6 | 4613 | default: |
8e65ff28 | 4614 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4615 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4616 | break; |
c906108c | 4617 | } |
c906108c SS |
4618 | } |
4619 | ||
edcc5120 TT |
4620 | /* A helper function that prints a shared library stopped event. */ |
4621 | ||
4622 | static void | |
4623 | print_solib_event (int is_catchpoint) | |
4624 | { | |
4625 | int any_deleted | |
4626 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4627 | int any_added | |
4628 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4629 | ||
4630 | if (!is_catchpoint) | |
4631 | { | |
4632 | if (any_added || any_deleted) | |
112e8700 | 4633 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4634 | else |
112e8700 SM |
4635 | current_uiout->text (_("Stopped due to shared library event (no " |
4636 | "libraries added or removed)\n")); | |
edcc5120 TT |
4637 | } |
4638 | ||
112e8700 SM |
4639 | if (current_uiout->is_mi_like_p ()) |
4640 | current_uiout->field_string ("reason", | |
4641 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4642 | |
4643 | if (any_deleted) | |
4644 | { | |
edcc5120 TT |
4645 | char *name; |
4646 | int ix; | |
4647 | ||
112e8700 | 4648 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4649 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4650 | for (ix = 0; |
4651 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4652 | ix, name); | |
4653 | ++ix) | |
4654 | { | |
4655 | if (ix > 0) | |
112e8700 SM |
4656 | current_uiout->text (" "); |
4657 | current_uiout->field_string ("library", name); | |
4658 | current_uiout->text ("\n"); | |
edcc5120 | 4659 | } |
edcc5120 TT |
4660 | } |
4661 | ||
4662 | if (any_added) | |
4663 | { | |
4664 | struct so_list *iter; | |
4665 | int ix; | |
edcc5120 | 4666 | |
112e8700 | 4667 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4668 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4669 | for (ix = 0; |
4670 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4671 | ix, iter); | |
4672 | ++ix) | |
4673 | { | |
4674 | if (ix > 0) | |
112e8700 SM |
4675 | current_uiout->text (" "); |
4676 | current_uiout->field_string ("library", iter->so_name); | |
4677 | current_uiout->text ("\n"); | |
edcc5120 | 4678 | } |
edcc5120 TT |
4679 | } |
4680 | } | |
4681 | ||
e514a9d6 JM |
4682 | /* Print a message indicating what happened. This is called from |
4683 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4684 | list - a list of the eventpoints that caused this stop. KIND is |
4685 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4686 | routine calls the generic print routine for printing a message |
4687 | about reasons for stopping. This will print (for example) the | |
4688 | "Breakpoint n," part of the output. The return value of this | |
4689 | routine is one of: | |
c906108c | 4690 | |
4a64f543 | 4691 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4692 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4693 | code to print the location. An example is |
c5aa993b JM |
4694 | "Breakpoint 1, " which should be followed by |
4695 | the location. | |
917317f4 | 4696 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4697 | to also print the location part of the message. |
4698 | An example is the catch/throw messages, which | |
4a64f543 | 4699 | don't require a location appended to the end. |
917317f4 | 4700 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4701 | further info to be printed. */ |
c906108c | 4702 | |
917317f4 | 4703 | enum print_stop_action |
36dfb11c | 4704 | bpstat_print (bpstat bs, int kind) |
c906108c | 4705 | { |
f486487f | 4706 | enum print_stop_action val; |
c5aa993b | 4707 | |
c906108c | 4708 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4709 | (Currently all watchpoints go on the bpstat whether hit or not. |
4710 | That probably could (should) be changed, provided care is taken | |
c906108c | 4711 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4712 | for (; bs; bs = bs->next) |
4713 | { | |
4714 | val = print_bp_stop_message (bs); | |
4715 | if (val == PRINT_SRC_ONLY | |
4716 | || val == PRINT_SRC_AND_LOC | |
4717 | || val == PRINT_NOTHING) | |
4718 | return val; | |
4719 | } | |
c906108c | 4720 | |
36dfb11c TT |
4721 | /* If we had hit a shared library event breakpoint, |
4722 | print_bp_stop_message would print out this message. If we hit an | |
4723 | OS-level shared library event, do the same thing. */ | |
4724 | if (kind == TARGET_WAITKIND_LOADED) | |
4725 | { | |
edcc5120 | 4726 | print_solib_event (0); |
36dfb11c TT |
4727 | return PRINT_NOTHING; |
4728 | } | |
4729 | ||
e514a9d6 | 4730 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4731 | with and nothing was printed. */ |
917317f4 | 4732 | return PRINT_UNKNOWN; |
c906108c SS |
4733 | } |
4734 | ||
bf469271 | 4735 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4736 | |
bf469271 PA |
4737 | static bool |
4738 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4739 | { |
278cd55f | 4740 | struct value *mark = value_mark (); |
bf469271 | 4741 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4742 | |
c906108c | 4743 | value_free_to_mark (mark); |
bf469271 | 4744 | return res; |
c906108c SS |
4745 | } |
4746 | ||
5760d0ab | 4747 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4748 | |
04afa70c TT |
4749 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4750 | : next (NULL), | |
4751 | bp_location_at (bl), | |
4752 | breakpoint_at (bl->owner), | |
4753 | commands (NULL), | |
4754 | old_val (NULL), | |
4755 | print (0), | |
4756 | stop (0), | |
4757 | print_it (print_it_normal) | |
c906108c | 4758 | { |
f431efe5 | 4759 | incref_bp_location (bl); |
04afa70c TT |
4760 | **bs_link_pointer = this; |
4761 | *bs_link_pointer = &next; | |
4762 | } | |
4763 | ||
4764 | bpstats::bpstats () | |
4765 | : next (NULL), | |
4766 | bp_location_at (NULL), | |
4767 | breakpoint_at (NULL), | |
4768 | commands (NULL), | |
4769 | old_val (NULL), | |
4770 | print (0), | |
4771 | stop (0), | |
4772 | print_it (print_it_normal) | |
4773 | { | |
c906108c SS |
4774 | } |
4775 | \f | |
d983da9c DJ |
4776 | /* The target has stopped with waitstatus WS. Check if any hardware |
4777 | watchpoints have triggered, according to the target. */ | |
4778 | ||
4779 | int | |
4780 | watchpoints_triggered (struct target_waitstatus *ws) | |
4781 | { | |
d92524f1 | 4782 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4783 | CORE_ADDR addr; |
4784 | struct breakpoint *b; | |
4785 | ||
4786 | if (!stopped_by_watchpoint) | |
4787 | { | |
4788 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4789 | as not triggered. */ | |
4790 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4791 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4792 | { |
4793 | struct watchpoint *w = (struct watchpoint *) b; | |
4794 | ||
4795 | w->watchpoint_triggered = watch_triggered_no; | |
4796 | } | |
d983da9c DJ |
4797 | |
4798 | return 0; | |
4799 | } | |
4800 | ||
4801 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4802 | { | |
4803 | /* We were stopped by a watchpoint, but we don't know where. | |
4804 | Mark all watchpoints as unknown. */ | |
4805 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4806 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4807 | { |
4808 | struct watchpoint *w = (struct watchpoint *) b; | |
4809 | ||
4810 | w->watchpoint_triggered = watch_triggered_unknown; | |
4811 | } | |
d983da9c | 4812 | |
3c4797ba | 4813 | return 1; |
d983da9c DJ |
4814 | } |
4815 | ||
4816 | /* The target could report the data address. Mark watchpoints | |
4817 | affected by this data address as triggered, and all others as not | |
4818 | triggered. */ | |
4819 | ||
4820 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4821 | if (is_hardware_watchpoint (b)) |
d983da9c | 4822 | { |
3a5c3e22 | 4823 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4824 | struct bp_location *loc; |
d983da9c | 4825 | |
3a5c3e22 | 4826 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4827 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4828 | { |
3a5c3e22 | 4829 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4830 | { |
3a5c3e22 PA |
4831 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4832 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4833 | |
4834 | if (newaddr == start) | |
4835 | { | |
3a5c3e22 | 4836 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4837 | break; |
4838 | } | |
4839 | } | |
4840 | /* Exact match not required. Within range is sufficient. */ | |
4841 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4842 | addr, loc->address, | |
4843 | loc->length)) | |
4844 | { | |
3a5c3e22 | 4845 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4846 | break; |
4847 | } | |
4848 | } | |
d983da9c DJ |
4849 | } |
4850 | ||
4851 | return 1; | |
4852 | } | |
4853 | ||
bf469271 PA |
4854 | /* Possible return values for watchpoint_check. */ |
4855 | enum wp_check_result | |
4856 | { | |
4857 | /* The watchpoint has been deleted. */ | |
4858 | WP_DELETED = 1, | |
4859 | ||
4860 | /* The value has changed. */ | |
4861 | WP_VALUE_CHANGED = 2, | |
4862 | ||
4863 | /* The value has not changed. */ | |
4864 | WP_VALUE_NOT_CHANGED = 3, | |
4865 | ||
4866 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4867 | WP_IGNORE = 4, | |
4868 | }; | |
c906108c SS |
4869 | |
4870 | #define BP_TEMPFLAG 1 | |
4871 | #define BP_HARDWAREFLAG 2 | |
4872 | ||
4a64f543 | 4873 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4874 | changed. */ |
553e4c11 | 4875 | |
bf469271 PA |
4876 | static wp_check_result |
4877 | watchpoint_check (bpstat bs) | |
c906108c | 4878 | { |
3a5c3e22 | 4879 | struct watchpoint *b; |
c906108c SS |
4880 | struct frame_info *fr; |
4881 | int within_current_scope; | |
4882 | ||
f431efe5 | 4883 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4884 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4885 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4886 | |
f6bc2008 PA |
4887 | /* If this is a local watchpoint, we only want to check if the |
4888 | watchpoint frame is in scope if the current thread is the thread | |
4889 | that was used to create the watchpoint. */ | |
4890 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4891 | return WP_IGNORE; |
f6bc2008 | 4892 | |
c906108c SS |
4893 | if (b->exp_valid_block == NULL) |
4894 | within_current_scope = 1; | |
4895 | else | |
4896 | { | |
edb3359d DJ |
4897 | struct frame_info *frame = get_current_frame (); |
4898 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4899 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4900 | ||
c9cf6e20 | 4901 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4902 | still in the function but the stack frame has already been |
4903 | invalidated. Since we can't rely on the values of local | |
4904 | variables after the stack has been destroyed, we are treating | |
4905 | the watchpoint in that state as `not changed' without further | |
4906 | checking. Don't mark watchpoints as changed if the current | |
4907 | frame is in an epilogue - even if they are in some other | |
4908 | frame, our view of the stack is likely to be wrong and | |
4909 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4910 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4911 | return WP_IGNORE; |
a0f49112 | 4912 | |
101dcfbe | 4913 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4914 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4915 | |
4916 | /* If we've gotten confused in the unwinder, we might have | |
4917 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4918 | if (within_current_scope) |
4919 | { | |
4920 | struct symbol *function; | |
4921 | ||
4922 | function = get_frame_function (fr); | |
4923 | if (function == NULL | |
4924 | || !contained_in (b->exp_valid_block, | |
4925 | SYMBOL_BLOCK_VALUE (function))) | |
4926 | within_current_scope = 0; | |
4927 | } | |
69fbadd5 | 4928 | |
edb3359d | 4929 | if (within_current_scope) |
c906108c SS |
4930 | /* If we end up stopping, the current frame will get selected |
4931 | in normal_stop. So this call to select_frame won't affect | |
4932 | the user. */ | |
0f7d239c | 4933 | select_frame (fr); |
c906108c | 4934 | } |
c5aa993b | 4935 | |
c906108c SS |
4936 | if (within_current_scope) |
4937 | { | |
4a64f543 MS |
4938 | /* We use value_{,free_to_}mark because it could be a *long* |
4939 | time before we return to the command level and call | |
4940 | free_all_values. We can't call free_all_values because we | |
4941 | might be in the middle of evaluating a function call. */ | |
c906108c | 4942 | |
0cf6dd15 | 4943 | int pc = 0; |
9c06b0b4 | 4944 | struct value *mark; |
fa4727a6 DJ |
4945 | struct value *new_val; |
4946 | ||
c1fc2657 | 4947 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4948 | /* Since we don't know the exact trigger address (from |
4949 | stopped_data_address), just tell the user we've triggered | |
4950 | a mask watchpoint. */ | |
4951 | return WP_VALUE_CHANGED; | |
4952 | ||
4953 | mark = value_mark (); | |
4d01a485 | 4954 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4955 | |
bb9d5f81 PP |
4956 | if (b->val_bitsize != 0) |
4957 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4958 | ||
4a64f543 MS |
4959 | /* We use value_equal_contents instead of value_equal because |
4960 | the latter coerces an array to a pointer, thus comparing just | |
4961 | the address of the array instead of its contents. This is | |
4962 | not what we want. */ | |
fa4727a6 | 4963 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4964 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4965 | { |
fa4727a6 DJ |
4966 | if (new_val != NULL) |
4967 | { | |
4968 | release_value (new_val); | |
4969 | value_free_to_mark (mark); | |
4970 | } | |
c906108c SS |
4971 | bs->old_val = b->val; |
4972 | b->val = new_val; | |
fa4727a6 | 4973 | b->val_valid = 1; |
c906108c SS |
4974 | return WP_VALUE_CHANGED; |
4975 | } | |
4976 | else | |
4977 | { | |
60e1c644 | 4978 | /* Nothing changed. */ |
c906108c | 4979 | value_free_to_mark (mark); |
c906108c SS |
4980 | return WP_VALUE_NOT_CHANGED; |
4981 | } | |
4982 | } | |
4983 | else | |
4984 | { | |
4985 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4986 | if we temporarily ignored the watchpoint, then when |
4987 | we reenter the block in which it is valid it contains | |
4988 | garbage (in the case of a function, it may have two | |
4989 | garbage values, one before and one after the prologue). | |
4990 | So we can't even detect the first assignment to it and | |
4991 | watch after that (since the garbage may or may not equal | |
4992 | the first value assigned). */ | |
348d480f PA |
4993 | /* We print all the stop information in |
4994 | breakpoint_ops->print_it, but in this case, by the time we | |
4995 | call breakpoint_ops->print_it this bp will be deleted | |
4996 | already. So we have no choice but print the information | |
4997 | here. */ | |
468afe6c | 4998 | |
0e454242 | 4999 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5000 | { |
5001 | struct ui_out *uiout = current_uiout; | |
5002 | ||
112e8700 SM |
5003 | if (uiout->is_mi_like_p ()) |
5004 | uiout->field_string | |
5005 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5006 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 5007 | uiout->field_int ("wpnum", b->number); |
112e8700 | 5008 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
5009 | "which its expression is valid.\n"); |
5010 | } | |
4ce44c66 | 5011 | |
cdac0397 | 5012 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5013 | b->commands = NULL; |
d0fb5eae | 5014 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5015 | |
5016 | return WP_DELETED; | |
5017 | } | |
5018 | } | |
5019 | ||
18a18393 | 5020 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5021 | breakpoint location BL. This function does not check if we should |
5022 | stop, only if BL explains the stop. */ | |
5023 | ||
18a18393 | 5024 | static int |
6c95b8df | 5025 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5026 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5027 | const struct target_waitstatus *ws) |
18a18393 VP |
5028 | { |
5029 | struct breakpoint *b = bl->owner; | |
5030 | ||
348d480f | 5031 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5032 | gdb_assert (b != NULL); |
5033 | ||
bd522513 | 5034 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5035 | } |
5036 | ||
3a5c3e22 PA |
5037 | /* Determine if the watched values have actually changed, and we |
5038 | should stop. If not, set BS->stop to 0. */ | |
5039 | ||
18a18393 VP |
5040 | static void |
5041 | bpstat_check_watchpoint (bpstat bs) | |
5042 | { | |
2bdf28a0 | 5043 | const struct bp_location *bl; |
3a5c3e22 | 5044 | struct watchpoint *b; |
2bdf28a0 JK |
5045 | |
5046 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5047 | bl = bs->bp_location_at; |
2bdf28a0 | 5048 | gdb_assert (bl != NULL); |
3a5c3e22 | 5049 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5050 | gdb_assert (b != NULL); |
18a18393 | 5051 | |
18a18393 | 5052 | { |
18a18393 VP |
5053 | int must_check_value = 0; |
5054 | ||
c1fc2657 | 5055 | if (b->type == bp_watchpoint) |
18a18393 VP |
5056 | /* For a software watchpoint, we must always check the |
5057 | watched value. */ | |
5058 | must_check_value = 1; | |
5059 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5060 | /* We have a hardware watchpoint (read, write, or access) | |
5061 | and the target earlier reported an address watched by | |
5062 | this watchpoint. */ | |
5063 | must_check_value = 1; | |
5064 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5065 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5066 | /* We were stopped by a hardware watchpoint, but the target could |
5067 | not report the data address. We must check the watchpoint's | |
5068 | value. Access and read watchpoints are out of luck; without | |
5069 | a data address, we can't figure it out. */ | |
5070 | must_check_value = 1; | |
3a5c3e22 | 5071 | |
18a18393 VP |
5072 | if (must_check_value) |
5073 | { | |
bf469271 PA |
5074 | wp_check_result e; |
5075 | ||
5076 | TRY | |
5077 | { | |
5078 | e = watchpoint_check (bs); | |
5079 | } | |
5080 | CATCH (ex, RETURN_MASK_ALL) | |
5081 | { | |
5082 | exception_fprintf (gdb_stderr, ex, | |
5083 | "Error evaluating expression " | |
5084 | "for watchpoint %d\n", | |
5085 | b->number); | |
5086 | ||
5087 | SWITCH_THRU_ALL_UIS () | |
5088 | { | |
5089 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5090 | b->number); | |
5091 | } | |
5092 | watchpoint_del_at_next_stop (b); | |
5093 | e = WP_DELETED; | |
5094 | } | |
5095 | END_CATCH | |
5096 | ||
18a18393 VP |
5097 | switch (e) |
5098 | { | |
5099 | case WP_DELETED: | |
5100 | /* We've already printed what needs to be printed. */ | |
5101 | bs->print_it = print_it_done; | |
5102 | /* Stop. */ | |
5103 | break; | |
60e1c644 PA |
5104 | case WP_IGNORE: |
5105 | bs->print_it = print_it_noop; | |
5106 | bs->stop = 0; | |
5107 | break; | |
18a18393 | 5108 | case WP_VALUE_CHANGED: |
c1fc2657 | 5109 | if (b->type == bp_read_watchpoint) |
18a18393 | 5110 | { |
85d721b8 PA |
5111 | /* There are two cases to consider here: |
5112 | ||
4a64f543 | 5113 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5114 | In that case, trust the target, and always report |
5115 | the watchpoint hit to the user. Even though | |
5116 | reads don't cause value changes, the value may | |
5117 | have changed since the last time it was read, and | |
5118 | since we're not trapping writes, we will not see | |
5119 | those, and as such we should ignore our notion of | |
5120 | old value. | |
5121 | ||
4a64f543 | 5122 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5123 | reads and writes. There are two ways this may |
5124 | happen: | |
5125 | ||
4a64f543 | 5126 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5127 | reads only, but can break on accesses (reads or |
5128 | writes), such as e.g., x86. We detect this case | |
5129 | at the time we try to insert read watchpoints. | |
5130 | ||
4a64f543 | 5131 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5132 | watchpoints, but, the user set an access or write |
5133 | watchpoint watching the same memory as this read | |
5134 | watchpoint. | |
5135 | ||
5136 | If we're watching memory writes as well as reads, | |
5137 | ignore watchpoint hits when we find that the | |
5138 | value hasn't changed, as reads don't cause | |
5139 | changes. This still gives false positives when | |
5140 | the program writes the same value to memory as | |
5141 | what there was already in memory (we will confuse | |
5142 | it for a read), but it's much better than | |
5143 | nothing. */ | |
5144 | ||
5145 | int other_write_watchpoint = 0; | |
5146 | ||
5147 | if (bl->watchpoint_type == hw_read) | |
5148 | { | |
5149 | struct breakpoint *other_b; | |
5150 | ||
5151 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5152 | if (other_b->type == bp_hardware_watchpoint |
5153 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5154 | { |
3a5c3e22 PA |
5155 | struct watchpoint *other_w = |
5156 | (struct watchpoint *) other_b; | |
5157 | ||
5158 | if (other_w->watchpoint_triggered | |
5159 | == watch_triggered_yes) | |
5160 | { | |
5161 | other_write_watchpoint = 1; | |
5162 | break; | |
5163 | } | |
85d721b8 PA |
5164 | } |
5165 | } | |
5166 | ||
5167 | if (other_write_watchpoint | |
5168 | || bl->watchpoint_type == hw_access) | |
5169 | { | |
5170 | /* We're watching the same memory for writes, | |
5171 | and the value changed since the last time we | |
5172 | updated it, so this trap must be for a write. | |
5173 | Ignore it. */ | |
5174 | bs->print_it = print_it_noop; | |
5175 | bs->stop = 0; | |
5176 | } | |
18a18393 VP |
5177 | } |
5178 | break; | |
5179 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5180 | if (b->type == bp_hardware_watchpoint |
5181 | || b->type == bp_watchpoint) | |
18a18393 VP |
5182 | { |
5183 | /* Don't stop: write watchpoints shouldn't fire if | |
5184 | the value hasn't changed. */ | |
5185 | bs->print_it = print_it_noop; | |
5186 | bs->stop = 0; | |
5187 | } | |
5188 | /* Stop. */ | |
5189 | break; | |
5190 | default: | |
5191 | /* Can't happen. */ | |
18a18393 VP |
5192 | break; |
5193 | } | |
5194 | } | |
5195 | else /* must_check_value == 0 */ | |
5196 | { | |
5197 | /* This is a case where some watchpoint(s) triggered, but | |
5198 | not at the address of this watchpoint, or else no | |
5199 | watchpoint triggered after all. So don't print | |
5200 | anything for this watchpoint. */ | |
5201 | bs->print_it = print_it_noop; | |
5202 | bs->stop = 0; | |
5203 | } | |
5204 | } | |
5205 | } | |
5206 | ||
7d4df6a4 DE |
5207 | /* For breakpoints that are currently marked as telling gdb to stop, |
5208 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5209 | of breakpoint referred to by BS. If we should not stop for this |
5210 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5211 | |
18a18393 VP |
5212 | static void |
5213 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5214 | { | |
2bdf28a0 JK |
5215 | const struct bp_location *bl; |
5216 | struct breakpoint *b; | |
bf469271 PA |
5217 | /* Assume stop. */ |
5218 | bool condition_result = true; | |
7d4df6a4 DE |
5219 | struct expression *cond; |
5220 | ||
5221 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5222 | |
5223 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5224 | bl = bs->bp_location_at; |
2bdf28a0 | 5225 | gdb_assert (bl != NULL); |
f431efe5 | 5226 | b = bs->breakpoint_at; |
2bdf28a0 | 5227 | gdb_assert (b != NULL); |
18a18393 | 5228 | |
b775012e LM |
5229 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5230 | need to do so again since GDB does not know if we stopped due to a | |
5231 | breakpoint or a single step breakpoint. */ | |
5232 | ||
18a18393 | 5233 | if (frame_id_p (b->frame_id) |
edb3359d | 5234 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5235 | { |
7d4df6a4 DE |
5236 | bs->stop = 0; |
5237 | return; | |
5238 | } | |
60e1c644 | 5239 | |
12ab52e9 PA |
5240 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5241 | evaluating the condition if this isn't the specified | |
5242 | thread/task. */ | |
5d5658a1 | 5243 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5244 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5245 | ||
6c1b0f7b DE |
5246 | { |
5247 | bs->stop = 0; | |
5248 | return; | |
5249 | } | |
5250 | ||
6dddc817 DE |
5251 | /* Evaluate extension language breakpoints that have a "stop" method |
5252 | implemented. */ | |
5253 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5254 | |
7d4df6a4 DE |
5255 | if (is_watchpoint (b)) |
5256 | { | |
5257 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5258 | |
4d01a485 | 5259 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5260 | } |
5261 | else | |
4d01a485 | 5262 | cond = bl->cond.get (); |
60e1c644 | 5263 | |
7d4df6a4 DE |
5264 | if (cond && b->disposition != disp_del_at_next_stop) |
5265 | { | |
5266 | int within_current_scope = 1; | |
5267 | struct watchpoint * w; | |
60e1c644 | 5268 | |
7d4df6a4 DE |
5269 | /* We use value_mark and value_free_to_mark because it could |
5270 | be a long time before we return to the command level and | |
5271 | call free_all_values. We can't call free_all_values | |
5272 | because we might be in the middle of evaluating a | |
5273 | function call. */ | |
5274 | struct value *mark = value_mark (); | |
5275 | ||
5276 | if (is_watchpoint (b)) | |
5277 | w = (struct watchpoint *) b; | |
5278 | else | |
5279 | w = NULL; | |
5280 | ||
5281 | /* Need to select the frame, with all that implies so that | |
5282 | the conditions will have the right context. Because we | |
5283 | use the frame, we will not see an inlined function's | |
5284 | variables when we arrive at a breakpoint at the start | |
5285 | of the inlined function; the current frame will be the | |
5286 | call site. */ | |
5287 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5288 | select_frame (get_current_frame ()); | |
5289 | else | |
18a18393 | 5290 | { |
7d4df6a4 DE |
5291 | struct frame_info *frame; |
5292 | ||
5293 | /* For local watchpoint expressions, which particular | |
5294 | instance of a local is being watched matters, so we | |
5295 | keep track of the frame to evaluate the expression | |
5296 | in. To evaluate the condition however, it doesn't | |
5297 | really matter which instantiation of the function | |
5298 | where the condition makes sense triggers the | |
5299 | watchpoint. This allows an expression like "watch | |
5300 | global if q > 10" set in `func', catch writes to | |
5301 | global on all threads that call `func', or catch | |
5302 | writes on all recursive calls of `func' by a single | |
5303 | thread. We simply always evaluate the condition in | |
5304 | the innermost frame that's executing where it makes | |
5305 | sense to evaluate the condition. It seems | |
5306 | intuitive. */ | |
5307 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5308 | if (frame != NULL) | |
5309 | select_frame (frame); | |
5310 | else | |
5311 | within_current_scope = 0; | |
18a18393 | 5312 | } |
7d4df6a4 | 5313 | if (within_current_scope) |
bf469271 PA |
5314 | { |
5315 | TRY | |
5316 | { | |
5317 | condition_result = breakpoint_cond_eval (cond); | |
5318 | } | |
5319 | CATCH (ex, RETURN_MASK_ALL) | |
5320 | { | |
5321 | exception_fprintf (gdb_stderr, ex, | |
5322 | "Error in testing breakpoint condition:\n"); | |
5323 | } | |
5324 | END_CATCH | |
5325 | } | |
7d4df6a4 | 5326 | else |
18a18393 | 5327 | { |
7d4df6a4 DE |
5328 | warning (_("Watchpoint condition cannot be tested " |
5329 | "in the current scope")); | |
5330 | /* If we failed to set the right context for this | |
5331 | watchpoint, unconditionally report it. */ | |
18a18393 | 5332 | } |
7d4df6a4 DE |
5333 | /* FIXME-someday, should give breakpoint #. */ |
5334 | value_free_to_mark (mark); | |
18a18393 | 5335 | } |
7d4df6a4 | 5336 | |
bf469271 | 5337 | if (cond && !condition_result) |
7d4df6a4 DE |
5338 | { |
5339 | bs->stop = 0; | |
5340 | } | |
7d4df6a4 DE |
5341 | else if (b->ignore_count > 0) |
5342 | { | |
5343 | b->ignore_count--; | |
5344 | bs->stop = 0; | |
5345 | /* Increase the hit count even though we don't stop. */ | |
5346 | ++(b->hit_count); | |
5347 | observer_notify_breakpoint_modified (b); | |
5348 | } | |
18a18393 VP |
5349 | } |
5350 | ||
1cf4d951 PA |
5351 | /* Returns true if we need to track moribund locations of LOC's type |
5352 | on the current target. */ | |
5353 | ||
5354 | static int | |
5355 | need_moribund_for_location_type (struct bp_location *loc) | |
5356 | { | |
5357 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5358 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5359 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5360 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5361 | } | |
5362 | ||
18a18393 | 5363 | |
9709f61c | 5364 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5365 | BP_ADDR in thread PTID. |
c906108c | 5366 | |
d983da9c | 5367 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5368 | don't understand this stop. Result is a chain of bpstat's such |
5369 | that: | |
c906108c | 5370 | |
c5aa993b | 5371 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5372 | |
c5aa993b | 5373 | if we understand why we stopped, the result is not null. |
c906108c | 5374 | |
c5aa993b JM |
5375 | Each element of the chain refers to a particular breakpoint or |
5376 | watchpoint at which we have stopped. (We may have stopped for | |
5377 | several reasons concurrently.) | |
c906108c | 5378 | |
c5aa993b JM |
5379 | Each element of the chain has valid next, breakpoint_at, |
5380 | commands, FIXME??? fields. */ | |
c906108c SS |
5381 | |
5382 | bpstat | |
accd0bcd | 5383 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5384 | CORE_ADDR bp_addr, ptid_t ptid, |
5385 | const struct target_waitstatus *ws) | |
c906108c | 5386 | { |
0d381245 | 5387 | struct breakpoint *b = NULL; |
afe38095 | 5388 | struct bp_location *bl; |
20874c92 | 5389 | struct bp_location *loc; |
5760d0ab JK |
5390 | /* First item of allocated bpstat's. */ |
5391 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5392 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5393 | bpstat bs; |
20874c92 | 5394 | int ix; |
429374b8 | 5395 | int need_remove_insert; |
f431efe5 | 5396 | int removed_any; |
c906108c | 5397 | |
f431efe5 PA |
5398 | /* First, build the bpstat chain with locations that explain a |
5399 | target stop, while being careful to not set the target running, | |
5400 | as that may invalidate locations (in particular watchpoint | |
5401 | locations are recreated). Resuming will happen here with | |
5402 | breakpoint conditions or watchpoint expressions that include | |
5403 | inferior function calls. */ | |
c5aa993b | 5404 | |
429374b8 JK |
5405 | ALL_BREAKPOINTS (b) |
5406 | { | |
1a853c52 | 5407 | if (!breakpoint_enabled (b)) |
429374b8 | 5408 | continue; |
a5606eee | 5409 | |
429374b8 JK |
5410 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5411 | { | |
4a64f543 MS |
5412 | /* For hardware watchpoints, we look only at the first |
5413 | location. The watchpoint_check function will work on the | |
5414 | entire expression, not the individual locations. For | |
5415 | read watchpoints, the watchpoints_triggered function has | |
5416 | checked all locations already. */ | |
429374b8 JK |
5417 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5418 | break; | |
18a18393 | 5419 | |
f6592439 | 5420 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5421 | continue; |
c5aa993b | 5422 | |
09ac7c10 | 5423 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5424 | continue; |
c5aa993b | 5425 | |
4a64f543 MS |
5426 | /* Come here if it's a watchpoint, or if the break address |
5427 | matches. */ | |
c5aa993b | 5428 | |
04afa70c | 5429 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5430 | explain stop. */ |
c5aa993b | 5431 | |
f431efe5 PA |
5432 | /* Assume we stop. Should we find a watchpoint that is not |
5433 | actually triggered, or if the condition of the breakpoint | |
5434 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5435 | bs->stop = 1; |
5436 | bs->print = 1; | |
d983da9c | 5437 | |
f431efe5 PA |
5438 | /* If this is a scope breakpoint, mark the associated |
5439 | watchpoint as triggered so that we will handle the | |
5440 | out-of-scope event. We'll get to the watchpoint next | |
5441 | iteration. */ | |
d0fb5eae | 5442 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5443 | { |
5444 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5445 | ||
5446 | w->watchpoint_triggered = watch_triggered_yes; | |
5447 | } | |
f431efe5 PA |
5448 | } |
5449 | } | |
5450 | ||
7c16b83e | 5451 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5452 | if (!target_supports_stopped_by_sw_breakpoint () |
5453 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5454 | { |
1cf4d951 | 5455 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5456 | { |
1cf4d951 PA |
5457 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5458 | && need_moribund_for_location_type (loc)) | |
5459 | { | |
04afa70c | 5460 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5461 | /* For hits of moribund locations, we should just proceed. */ |
5462 | bs->stop = 0; | |
5463 | bs->print = 0; | |
5464 | bs->print_it = print_it_noop; | |
5465 | } | |
f431efe5 PA |
5466 | } |
5467 | } | |
5468 | ||
edcc5120 TT |
5469 | /* A bit of special processing for shlib breakpoints. We need to |
5470 | process solib loading here, so that the lists of loaded and | |
5471 | unloaded libraries are correct before we handle "catch load" and | |
5472 | "catch unload". */ | |
5473 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5474 | { | |
5d268276 | 5475 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5476 | { |
5477 | handle_solib_event (); | |
5478 | break; | |
5479 | } | |
5480 | } | |
5481 | ||
f431efe5 PA |
5482 | /* Now go through the locations that caused the target to stop, and |
5483 | check whether we're interested in reporting this stop to higher | |
5484 | layers, or whether we should resume the target transparently. */ | |
5485 | ||
5486 | removed_any = 0; | |
5487 | ||
5760d0ab | 5488 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5489 | { |
5490 | if (!bs->stop) | |
5491 | continue; | |
5492 | ||
f431efe5 | 5493 | b = bs->breakpoint_at; |
348d480f PA |
5494 | b->ops->check_status (bs); |
5495 | if (bs->stop) | |
28010a5d | 5496 | { |
348d480f | 5497 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5498 | |
429374b8 JK |
5499 | if (bs->stop) |
5500 | { | |
5501 | ++(b->hit_count); | |
8d3788bd | 5502 | observer_notify_breakpoint_modified (b); |
c906108c | 5503 | |
4a64f543 | 5504 | /* We will stop here. */ |
429374b8 JK |
5505 | if (b->disposition == disp_disable) |
5506 | { | |
816338b5 | 5507 | --(b->enable_count); |
1a853c52 | 5508 | if (b->enable_count <= 0) |
429374b8 | 5509 | b->enable_state = bp_disabled; |
f431efe5 | 5510 | removed_any = 1; |
429374b8 JK |
5511 | } |
5512 | if (b->silent) | |
5513 | bs->print = 0; | |
5514 | bs->commands = b->commands; | |
abf85f46 | 5515 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5516 | ? bs->commands.get () : NULL)) |
abf85f46 | 5517 | bs->print = 0; |
9d6e6e84 HZ |
5518 | |
5519 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5520 | } |
5521 | ||
348d480f | 5522 | } |
a9b3a50f PA |
5523 | |
5524 | /* Print nothing for this entry if we don't stop or don't | |
5525 | print. */ | |
5526 | if (!bs->stop || !bs->print) | |
5527 | bs->print_it = print_it_noop; | |
429374b8 | 5528 | } |
876fa593 | 5529 | |
d983da9c DJ |
5530 | /* If we aren't stopping, the value of some hardware watchpoint may |
5531 | not have changed, but the intermediate memory locations we are | |
5532 | watching may have. Don't bother if we're stopping; this will get | |
5533 | done later. */ | |
d832cb68 | 5534 | need_remove_insert = 0; |
5760d0ab JK |
5535 | if (! bpstat_causes_stop (bs_head)) |
5536 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5537 | if (!bs->stop |
f431efe5 PA |
5538 | && bs->breakpoint_at |
5539 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5540 | { |
3a5c3e22 PA |
5541 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5542 | ||
5543 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5544 | need_remove_insert = 1; |
d983da9c DJ |
5545 | } |
5546 | ||
d832cb68 | 5547 | if (need_remove_insert) |
44702360 | 5548 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5549 | else if (removed_any) |
44702360 | 5550 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5551 | |
5760d0ab | 5552 | return bs_head; |
c906108c | 5553 | } |
628fe4e4 JK |
5554 | |
5555 | static void | |
5556 | handle_jit_event (void) | |
5557 | { | |
5558 | struct frame_info *frame; | |
5559 | struct gdbarch *gdbarch; | |
5560 | ||
243a9253 PA |
5561 | if (debug_infrun) |
5562 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5563 | ||
628fe4e4 JK |
5564 | /* Switch terminal for any messages produced by |
5565 | breakpoint_re_set. */ | |
223ffa71 | 5566 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5567 | |
5568 | frame = get_current_frame (); | |
5569 | gdbarch = get_frame_arch (frame); | |
5570 | ||
5571 | jit_event_handler (gdbarch); | |
5572 | ||
223ffa71 | 5573 | target_terminal::inferior (); |
628fe4e4 JK |
5574 | } |
5575 | ||
5576 | /* Prepare WHAT final decision for infrun. */ | |
5577 | ||
5578 | /* Decide what infrun needs to do with this bpstat. */ | |
5579 | ||
c906108c | 5580 | struct bpstat_what |
0e30163f | 5581 | bpstat_what (bpstat bs_head) |
c906108c | 5582 | { |
c906108c | 5583 | struct bpstat_what retval; |
0e30163f | 5584 | bpstat bs; |
c906108c | 5585 | |
628fe4e4 | 5586 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5587 | retval.call_dummy = STOP_NONE; |
186c406b | 5588 | retval.is_longjmp = 0; |
628fe4e4 | 5589 | |
0e30163f | 5590 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5591 | { |
628fe4e4 JK |
5592 | /* Extract this BS's action. After processing each BS, we check |
5593 | if its action overrides all we've seem so far. */ | |
5594 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5595 | enum bptype bptype; | |
5596 | ||
c906108c | 5597 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5598 | { |
5599 | /* I suspect this can happen if it was a momentary | |
5600 | breakpoint which has since been deleted. */ | |
5601 | bptype = bp_none; | |
5602 | } | |
20874c92 | 5603 | else |
f431efe5 | 5604 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5605 | |
5606 | switch (bptype) | |
c906108c SS |
5607 | { |
5608 | case bp_none: | |
628fe4e4 | 5609 | break; |
c906108c SS |
5610 | case bp_breakpoint: |
5611 | case bp_hardware_breakpoint: | |
7c16b83e | 5612 | case bp_single_step: |
c906108c SS |
5613 | case bp_until: |
5614 | case bp_finish: | |
a9b3a50f | 5615 | case bp_shlib_event: |
c906108c SS |
5616 | if (bs->stop) |
5617 | { | |
5618 | if (bs->print) | |
628fe4e4 | 5619 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5620 | else |
628fe4e4 | 5621 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5622 | } |
5623 | else | |
628fe4e4 | 5624 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5625 | break; |
5626 | case bp_watchpoint: | |
5627 | case bp_hardware_watchpoint: | |
5628 | case bp_read_watchpoint: | |
5629 | case bp_access_watchpoint: | |
5630 | if (bs->stop) | |
5631 | { | |
5632 | if (bs->print) | |
628fe4e4 | 5633 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5634 | else |
628fe4e4 | 5635 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5636 | } |
5637 | else | |
628fe4e4 JK |
5638 | { |
5639 | /* There was a watchpoint, but we're not stopping. | |
5640 | This requires no further action. */ | |
5641 | } | |
c906108c SS |
5642 | break; |
5643 | case bp_longjmp: | |
e2e4d78b | 5644 | case bp_longjmp_call_dummy: |
186c406b | 5645 | case bp_exception: |
0a39bb32 PA |
5646 | if (bs->stop) |
5647 | { | |
5648 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5649 | retval.is_longjmp = bptype != bp_exception; | |
5650 | } | |
5651 | else | |
5652 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5653 | break; |
5654 | case bp_longjmp_resume: | |
186c406b | 5655 | case bp_exception_resume: |
0a39bb32 PA |
5656 | if (bs->stop) |
5657 | { | |
5658 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5659 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5660 | } | |
5661 | else | |
5662 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5663 | break; |
5664 | case bp_step_resume: | |
5665 | if (bs->stop) | |
628fe4e4 JK |
5666 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5667 | else | |
c906108c | 5668 | { |
628fe4e4 JK |
5669 | /* It is for the wrong frame. */ |
5670 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5671 | } |
c906108c | 5672 | break; |
2c03e5be PA |
5673 | case bp_hp_step_resume: |
5674 | if (bs->stop) | |
5675 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5676 | else | |
5677 | { | |
5678 | /* It is for the wrong frame. */ | |
5679 | this_action = BPSTAT_WHAT_SINGLE; | |
5680 | } | |
5681 | break; | |
c906108c | 5682 | case bp_watchpoint_scope: |
c4093a6a | 5683 | case bp_thread_event: |
1900040c | 5684 | case bp_overlay_event: |
0fd8e87f | 5685 | case bp_longjmp_master: |
aa7d318d | 5686 | case bp_std_terminate_master: |
186c406b | 5687 | case bp_exception_master: |
628fe4e4 | 5688 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5689 | break; |
ce78b96d | 5690 | case bp_catchpoint: |
c5aa993b JM |
5691 | if (bs->stop) |
5692 | { | |
5693 | if (bs->print) | |
628fe4e4 | 5694 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5695 | else |
628fe4e4 | 5696 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5697 | } |
5698 | else | |
628fe4e4 JK |
5699 | { |
5700 | /* There was a catchpoint, but we're not stopping. | |
5701 | This requires no further action. */ | |
5702 | } | |
5703 | break; | |
628fe4e4 | 5704 | case bp_jit_event: |
628fe4e4 | 5705 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5706 | break; |
c906108c | 5707 | case bp_call_dummy: |
53a5351d JM |
5708 | /* Make sure the action is stop (silent or noisy), |
5709 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5710 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5711 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5712 | break; |
5713 | case bp_std_terminate: | |
5714 | /* Make sure the action is stop (silent or noisy), | |
5715 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5716 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5717 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5718 | break; |
1042e4c0 | 5719 | case bp_tracepoint: |
7a697b8d | 5720 | case bp_fast_tracepoint: |
0fb4aa4b | 5721 | case bp_static_tracepoint: |
1042e4c0 SS |
5722 | /* Tracepoint hits should not be reported back to GDB, and |
5723 | if one got through somehow, it should have been filtered | |
5724 | out already. */ | |
5725 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5726 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5727 | break; |
5728 | case bp_gnu_ifunc_resolver: | |
5729 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5730 | this_action = BPSTAT_WHAT_SINGLE; | |
5731 | break; | |
5732 | case bp_gnu_ifunc_resolver_return: | |
5733 | /* The breakpoint will be removed, execution will restart from the | |
5734 | PC of the former breakpoint. */ | |
5735 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5736 | break; | |
e7e0cddf SS |
5737 | |
5738 | case bp_dprintf: | |
a11cfd87 HZ |
5739 | if (bs->stop) |
5740 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5741 | else | |
5742 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5743 | break; |
5744 | ||
628fe4e4 JK |
5745 | default: |
5746 | internal_error (__FILE__, __LINE__, | |
5747 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5748 | } |
628fe4e4 | 5749 | |
325fac50 | 5750 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5751 | } |
628fe4e4 | 5752 | |
243a9253 PA |
5753 | return retval; |
5754 | } | |
628fe4e4 | 5755 | |
243a9253 PA |
5756 | void |
5757 | bpstat_run_callbacks (bpstat bs_head) | |
5758 | { | |
5759 | bpstat bs; | |
628fe4e4 | 5760 | |
0e30163f JK |
5761 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5762 | { | |
5763 | struct breakpoint *b = bs->breakpoint_at; | |
5764 | ||
5765 | if (b == NULL) | |
5766 | continue; | |
5767 | switch (b->type) | |
5768 | { | |
243a9253 PA |
5769 | case bp_jit_event: |
5770 | handle_jit_event (); | |
5771 | break; | |
0e30163f JK |
5772 | case bp_gnu_ifunc_resolver: |
5773 | gnu_ifunc_resolver_stop (b); | |
5774 | break; | |
5775 | case bp_gnu_ifunc_resolver_return: | |
5776 | gnu_ifunc_resolver_return_stop (b); | |
5777 | break; | |
5778 | } | |
5779 | } | |
c906108c SS |
5780 | } |
5781 | ||
5782 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5783 | without hardware support). This isn't related to a specific bpstat, | |
5784 | just to things like whether watchpoints are set. */ | |
5785 | ||
c5aa993b | 5786 | int |
fba45db2 | 5787 | bpstat_should_step (void) |
c906108c SS |
5788 | { |
5789 | struct breakpoint *b; | |
cc59ec59 | 5790 | |
c906108c | 5791 | ALL_BREAKPOINTS (b) |
717a8278 | 5792 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5793 | return 1; |
c906108c SS |
5794 | return 0; |
5795 | } | |
5796 | ||
67822962 PA |
5797 | int |
5798 | bpstat_causes_stop (bpstat bs) | |
5799 | { | |
5800 | for (; bs != NULL; bs = bs->next) | |
5801 | if (bs->stop) | |
5802 | return 1; | |
5803 | ||
5804 | return 0; | |
5805 | } | |
5806 | ||
c906108c | 5807 | \f |
c5aa993b | 5808 | |
170b53b2 UW |
5809 | /* Compute a string of spaces suitable to indent the next line |
5810 | so it starts at the position corresponding to the table column | |
5811 | named COL_NAME in the currently active table of UIOUT. */ | |
5812 | ||
5813 | static char * | |
5814 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5815 | { | |
5816 | static char wrap_indent[80]; | |
5817 | int i, total_width, width, align; | |
c5209615 | 5818 | const char *text; |
170b53b2 UW |
5819 | |
5820 | total_width = 0; | |
112e8700 | 5821 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5822 | { |
5823 | if (strcmp (text, col_name) == 0) | |
5824 | { | |
5825 | gdb_assert (total_width < sizeof wrap_indent); | |
5826 | memset (wrap_indent, ' ', total_width); | |
5827 | wrap_indent[total_width] = 0; | |
5828 | ||
5829 | return wrap_indent; | |
5830 | } | |
5831 | ||
5832 | total_width += width + 1; | |
5833 | } | |
5834 | ||
5835 | return NULL; | |
5836 | } | |
5837 | ||
b775012e LM |
5838 | /* Determine if the locations of this breakpoint will have their conditions |
5839 | evaluated by the target, host or a mix of both. Returns the following: | |
5840 | ||
5841 | "host": Host evals condition. | |
5842 | "host or target": Host or Target evals condition. | |
5843 | "target": Target evals condition. | |
5844 | */ | |
5845 | ||
5846 | static const char * | |
5847 | bp_condition_evaluator (struct breakpoint *b) | |
5848 | { | |
5849 | struct bp_location *bl; | |
5850 | char host_evals = 0; | |
5851 | char target_evals = 0; | |
5852 | ||
5853 | if (!b) | |
5854 | return NULL; | |
5855 | ||
5856 | if (!is_breakpoint (b)) | |
5857 | return NULL; | |
5858 | ||
5859 | if (gdb_evaluates_breakpoint_condition_p () | |
5860 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5861 | return condition_evaluation_host; | |
5862 | ||
5863 | for (bl = b->loc; bl; bl = bl->next) | |
5864 | { | |
5865 | if (bl->cond_bytecode) | |
5866 | target_evals++; | |
5867 | else | |
5868 | host_evals++; | |
5869 | } | |
5870 | ||
5871 | if (host_evals && target_evals) | |
5872 | return condition_evaluation_both; | |
5873 | else if (target_evals) | |
5874 | return condition_evaluation_target; | |
5875 | else | |
5876 | return condition_evaluation_host; | |
5877 | } | |
5878 | ||
5879 | /* Determine the breakpoint location's condition evaluator. This is | |
5880 | similar to bp_condition_evaluator, but for locations. */ | |
5881 | ||
5882 | static const char * | |
5883 | bp_location_condition_evaluator (struct bp_location *bl) | |
5884 | { | |
5885 | if (bl && !is_breakpoint (bl->owner)) | |
5886 | return NULL; | |
5887 | ||
5888 | if (gdb_evaluates_breakpoint_condition_p () | |
5889 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5890 | return condition_evaluation_host; | |
5891 | ||
5892 | if (bl && bl->cond_bytecode) | |
5893 | return condition_evaluation_target; | |
5894 | else | |
5895 | return condition_evaluation_host; | |
5896 | } | |
5897 | ||
859825b8 JK |
5898 | /* Print the LOC location out of the list of B->LOC locations. */ |
5899 | ||
170b53b2 UW |
5900 | static void |
5901 | print_breakpoint_location (struct breakpoint *b, | |
5902 | struct bp_location *loc) | |
0d381245 | 5903 | { |
79a45e25 | 5904 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5905 | |
5906 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5907 | |
859825b8 JK |
5908 | if (loc != NULL && loc->shlib_disabled) |
5909 | loc = NULL; | |
5910 | ||
6c95b8df PA |
5911 | if (loc != NULL) |
5912 | set_current_program_space (loc->pspace); | |
5913 | ||
56435ebe | 5914 | if (b->display_canonical) |
d28cd78a | 5915 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5916 | else if (loc && loc->symtab) |
0d381245 | 5917 | { |
4a27f119 KS |
5918 | const struct symbol *sym = loc->symbol; |
5919 | ||
5920 | if (sym == NULL) | |
5921 | sym = find_pc_sect_function (loc->address, loc->section); | |
5922 | ||
0d381245 VP |
5923 | if (sym) |
5924 | { | |
112e8700 SM |
5925 | uiout->text ("in "); |
5926 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5927 | uiout->text (" "); | |
5928 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5929 | uiout->text ("at "); | |
0d381245 | 5930 | } |
112e8700 | 5931 | uiout->field_string ("file", |
05cba821 | 5932 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5933 | uiout->text (":"); |
05cba821 | 5934 | |
112e8700 SM |
5935 | if (uiout->is_mi_like_p ()) |
5936 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5937 | |
112e8700 | 5938 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5939 | } |
859825b8 | 5940 | else if (loc) |
0d381245 | 5941 | { |
d7e74731 | 5942 | string_file stb; |
170b53b2 | 5943 | |
d7e74731 | 5944 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5945 | demangle, ""); |
112e8700 | 5946 | uiout->field_stream ("at", stb); |
0d381245 | 5947 | } |
859825b8 | 5948 | else |
f00aae0f | 5949 | { |
d28cd78a TT |
5950 | uiout->field_string ("pending", |
5951 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5952 | /* If extra_string is available, it could be holding a condition |
5953 | or dprintf arguments. In either case, make sure it is printed, | |
5954 | too, but only for non-MI streams. */ | |
112e8700 | 5955 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5956 | { |
5957 | if (b->type == bp_dprintf) | |
112e8700 | 5958 | uiout->text (","); |
f00aae0f | 5959 | else |
112e8700 SM |
5960 | uiout->text (" "); |
5961 | uiout->text (b->extra_string); | |
f00aae0f KS |
5962 | } |
5963 | } | |
6c95b8df | 5964 | |
b775012e LM |
5965 | if (loc && is_breakpoint (b) |
5966 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5967 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5968 | { | |
112e8700 SM |
5969 | uiout->text (" ("); |
5970 | uiout->field_string ("evaluated-by", | |
b775012e | 5971 | bp_location_condition_evaluator (loc)); |
112e8700 | 5972 | uiout->text (")"); |
b775012e | 5973 | } |
0d381245 VP |
5974 | } |
5975 | ||
269b11a2 PA |
5976 | static const char * |
5977 | bptype_string (enum bptype type) | |
c906108c | 5978 | { |
c4093a6a JM |
5979 | struct ep_type_description |
5980 | { | |
5981 | enum bptype type; | |
a121b7c1 | 5982 | const char *description; |
c4093a6a JM |
5983 | }; |
5984 | static struct ep_type_description bptypes[] = | |
c906108c | 5985 | { |
c5aa993b JM |
5986 | {bp_none, "?deleted?"}, |
5987 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5988 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5989 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5990 | {bp_until, "until"}, |
5991 | {bp_finish, "finish"}, | |
5992 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5993 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5994 | {bp_read_watchpoint, "read watchpoint"}, |
5995 | {bp_access_watchpoint, "acc watchpoint"}, | |
5996 | {bp_longjmp, "longjmp"}, | |
5997 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5998 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5999 | {bp_exception, "exception"}, |
6000 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6001 | {bp_step_resume, "step resume"}, |
2c03e5be | 6002 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6003 | {bp_watchpoint_scope, "watchpoint scope"}, |
6004 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6005 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6006 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6007 | {bp_thread_event, "thread events"}, |
1900040c | 6008 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6009 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6010 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6011 | {bp_exception_master, "exception master"}, |
ce78b96d | 6012 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6013 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6014 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6015 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6016 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6017 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6018 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6019 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6020 | }; |
269b11a2 PA |
6021 | |
6022 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6023 | || ((int) type != bptypes[(int) type].type)) | |
6024 | internal_error (__FILE__, __LINE__, | |
6025 | _("bptypes table does not describe type #%d."), | |
6026 | (int) type); | |
6027 | ||
6028 | return bptypes[(int) type].description; | |
6029 | } | |
6030 | ||
998580f1 MK |
6031 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6032 | For CLI, prefix the list with the string 'inf'. */ | |
6033 | ||
6034 | static void | |
6035 | output_thread_groups (struct ui_out *uiout, | |
6036 | const char *field_name, | |
6037 | VEC(int) *inf_num, | |
6038 | int mi_only) | |
6039 | { | |
112e8700 | 6040 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6041 | int inf; |
6042 | int i; | |
6043 | ||
6044 | /* For backward compatibility, don't display inferiors in CLI unless | |
6045 | there are several. Always display them for MI. */ | |
6046 | if (!is_mi && mi_only) | |
6047 | return; | |
6048 | ||
10f489e5 | 6049 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6050 | |
998580f1 MK |
6051 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6052 | { | |
6053 | if (is_mi) | |
6054 | { | |
6055 | char mi_group[10]; | |
6056 | ||
6057 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
112e8700 | 6058 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6059 | } |
6060 | else | |
6061 | { | |
6062 | if (i == 0) | |
112e8700 | 6063 | uiout->text (" inf "); |
998580f1 | 6064 | else |
112e8700 | 6065 | uiout->text (", "); |
998580f1 | 6066 | |
112e8700 | 6067 | uiout->text (plongest (inf)); |
998580f1 MK |
6068 | } |
6069 | } | |
998580f1 MK |
6070 | } |
6071 | ||
269b11a2 PA |
6072 | /* Print B to gdb_stdout. */ |
6073 | ||
6074 | static void | |
6075 | print_one_breakpoint_location (struct breakpoint *b, | |
6076 | struct bp_location *loc, | |
6077 | int loc_number, | |
6078 | struct bp_location **last_loc, | |
269b11a2 PA |
6079 | int allflag) |
6080 | { | |
6081 | struct command_line *l; | |
c2c6d25f | 6082 | static char bpenables[] = "nynny"; |
c906108c | 6083 | |
79a45e25 | 6084 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6085 | int header_of_multiple = 0; |
6086 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6087 | struct value_print_options opts; |
6088 | ||
6089 | get_user_print_options (&opts); | |
0d381245 VP |
6090 | |
6091 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6092 | /* See comment in print_one_breakpoint concerning treatment of |
6093 | breakpoints with single disabled location. */ | |
0d381245 VP |
6094 | if (loc == NULL |
6095 | && (b->loc != NULL | |
6096 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6097 | header_of_multiple = 1; | |
6098 | if (loc == NULL) | |
6099 | loc = b->loc; | |
6100 | ||
c4093a6a JM |
6101 | annotate_record (); |
6102 | ||
6103 | /* 1 */ | |
6104 | annotate_field (0); | |
0d381245 VP |
6105 | if (part_of_multiple) |
6106 | { | |
6107 | char *formatted; | |
0c6773c1 | 6108 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6109 | uiout->field_string ("number", formatted); |
0d381245 VP |
6110 | xfree (formatted); |
6111 | } | |
6112 | else | |
6113 | { | |
112e8700 | 6114 | uiout->field_int ("number", b->number); |
0d381245 | 6115 | } |
c4093a6a JM |
6116 | |
6117 | /* 2 */ | |
6118 | annotate_field (1); | |
0d381245 | 6119 | if (part_of_multiple) |
112e8700 | 6120 | uiout->field_skip ("type"); |
269b11a2 | 6121 | else |
112e8700 | 6122 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6123 | |
6124 | /* 3 */ | |
6125 | annotate_field (2); | |
0d381245 | 6126 | if (part_of_multiple) |
112e8700 | 6127 | uiout->field_skip ("disp"); |
0d381245 | 6128 | else |
112e8700 | 6129 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6130 | |
c4093a6a JM |
6131 | |
6132 | /* 4 */ | |
6133 | annotate_field (3); | |
0d381245 | 6134 | if (part_of_multiple) |
112e8700 | 6135 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6136 | else |
112e8700 SM |
6137 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6138 | uiout->spaces (2); | |
0d381245 | 6139 | |
c4093a6a JM |
6140 | |
6141 | /* 5 and 6 */ | |
3086aeae | 6142 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6143 | { |
4a64f543 MS |
6144 | /* Although the print_one can possibly print all locations, |
6145 | calling it here is not likely to get any nice result. So, | |
6146 | make sure there's just one location. */ | |
0d381245 | 6147 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6148 | b->ops->print_one (b, last_loc); |
0d381245 | 6149 | } |
3086aeae DJ |
6150 | else |
6151 | switch (b->type) | |
6152 | { | |
6153 | case bp_none: | |
6154 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6155 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6156 | break; |
c906108c | 6157 | |
3086aeae DJ |
6158 | case bp_watchpoint: |
6159 | case bp_hardware_watchpoint: | |
6160 | case bp_read_watchpoint: | |
6161 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6162 | { |
6163 | struct watchpoint *w = (struct watchpoint *) b; | |
6164 | ||
6165 | /* Field 4, the address, is omitted (which makes the columns | |
6166 | not line up too nicely with the headers, but the effect | |
6167 | is relatively readable). */ | |
6168 | if (opts.addressprint) | |
112e8700 | 6169 | uiout->field_skip ("addr"); |
3a5c3e22 | 6170 | annotate_field (5); |
112e8700 | 6171 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6172 | } |
3086aeae DJ |
6173 | break; |
6174 | ||
3086aeae DJ |
6175 | case bp_breakpoint: |
6176 | case bp_hardware_breakpoint: | |
7c16b83e | 6177 | case bp_single_step: |
3086aeae DJ |
6178 | case bp_until: |
6179 | case bp_finish: | |
6180 | case bp_longjmp: | |
6181 | case bp_longjmp_resume: | |
e2e4d78b | 6182 | case bp_longjmp_call_dummy: |
186c406b TT |
6183 | case bp_exception: |
6184 | case bp_exception_resume: | |
3086aeae | 6185 | case bp_step_resume: |
2c03e5be | 6186 | case bp_hp_step_resume: |
3086aeae DJ |
6187 | case bp_watchpoint_scope: |
6188 | case bp_call_dummy: | |
aa7d318d | 6189 | case bp_std_terminate: |
3086aeae DJ |
6190 | case bp_shlib_event: |
6191 | case bp_thread_event: | |
6192 | case bp_overlay_event: | |
0fd8e87f | 6193 | case bp_longjmp_master: |
aa7d318d | 6194 | case bp_std_terminate_master: |
186c406b | 6195 | case bp_exception_master: |
1042e4c0 | 6196 | case bp_tracepoint: |
7a697b8d | 6197 | case bp_fast_tracepoint: |
0fb4aa4b | 6198 | case bp_static_tracepoint: |
e7e0cddf | 6199 | case bp_dprintf: |
4efc6507 | 6200 | case bp_jit_event: |
0e30163f JK |
6201 | case bp_gnu_ifunc_resolver: |
6202 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6203 | if (opts.addressprint) |
3086aeae DJ |
6204 | { |
6205 | annotate_field (4); | |
54e52265 | 6206 | if (header_of_multiple) |
112e8700 | 6207 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6208 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6209 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6210 | else |
112e8700 | 6211 | uiout->field_core_addr ("addr", |
5af949e3 | 6212 | loc->gdbarch, loc->address); |
3086aeae DJ |
6213 | } |
6214 | annotate_field (5); | |
0d381245 | 6215 | if (!header_of_multiple) |
170b53b2 | 6216 | print_breakpoint_location (b, loc); |
0d381245 | 6217 | if (b->loc) |
a6d9a66e | 6218 | *last_loc = b->loc; |
3086aeae DJ |
6219 | break; |
6220 | } | |
c906108c | 6221 | |
6c95b8df | 6222 | |
998580f1 | 6223 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6224 | { |
6225 | struct inferior *inf; | |
998580f1 MK |
6226 | VEC(int) *inf_num = NULL; |
6227 | int mi_only = 1; | |
6c95b8df | 6228 | |
998580f1 | 6229 | ALL_INFERIORS (inf) |
6c95b8df PA |
6230 | { |
6231 | if (inf->pspace == loc->pspace) | |
998580f1 | 6232 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6233 | } |
998580f1 MK |
6234 | |
6235 | /* For backward compatibility, don't display inferiors in CLI unless | |
6236 | there are several. Always display for MI. */ | |
6237 | if (allflag | |
6238 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6239 | && (number_of_program_spaces () > 1 | |
6240 | || number_of_inferiors () > 1) | |
6241 | /* LOC is for existing B, it cannot be in | |
6242 | moribund_locations and thus having NULL OWNER. */ | |
6243 | && loc->owner->type != bp_catchpoint)) | |
6244 | mi_only = 0; | |
6245 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6246 | VEC_free (int, inf_num); | |
6c95b8df PA |
6247 | } |
6248 | ||
4a306c9a | 6249 | if (!part_of_multiple) |
c4093a6a | 6250 | { |
4a306c9a JB |
6251 | if (b->thread != -1) |
6252 | { | |
6253 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6254 | "stop only in" line a little further down. */ |
112e8700 SM |
6255 | uiout->text (" thread "); |
6256 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6257 | } |
6258 | else if (b->task != 0) | |
6259 | { | |
112e8700 SM |
6260 | uiout->text (" task "); |
6261 | uiout->field_int ("task", b->task); | |
4a306c9a | 6262 | } |
c4093a6a | 6263 | } |
f1310107 | 6264 | |
112e8700 | 6265 | uiout->text ("\n"); |
f1310107 | 6266 | |
348d480f | 6267 | if (!part_of_multiple) |
f1310107 TJB |
6268 | b->ops->print_one_detail (b, uiout); |
6269 | ||
0d381245 | 6270 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6271 | { |
6272 | annotate_field (6); | |
112e8700 | 6273 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6274 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6275 | the frame ID. */ |
112e8700 | 6276 | uiout->field_core_addr ("frame", |
5af949e3 | 6277 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6278 | uiout->text ("\n"); |
c4093a6a JM |
6279 | } |
6280 | ||
28010a5d | 6281 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6282 | { |
6283 | annotate_field (7); | |
d77f58be | 6284 | if (is_tracepoint (b)) |
112e8700 | 6285 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6286 | else |
112e8700 SM |
6287 | uiout->text ("\tstop only if "); |
6288 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6289 | |
6290 | /* Print whether the target is doing the breakpoint's condition | |
6291 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6292 | if (is_breakpoint (b) | |
6293 | && breakpoint_condition_evaluation_mode () | |
6294 | == condition_evaluation_target) | |
6295 | { | |
112e8700 SM |
6296 | uiout->text (" ("); |
6297 | uiout->field_string ("evaluated-by", | |
b775012e | 6298 | bp_condition_evaluator (b)); |
112e8700 | 6299 | uiout->text (" evals)"); |
b775012e | 6300 | } |
112e8700 | 6301 | uiout->text ("\n"); |
0101ce28 JJ |
6302 | } |
6303 | ||
0d381245 | 6304 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6305 | { |
4a64f543 | 6306 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6307 | uiout->text ("\tstop only in thread "); |
6308 | if (uiout->is_mi_like_p ()) | |
6309 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6310 | else |
6311 | { | |
6312 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6313 | ||
112e8700 | 6314 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6315 | } |
112e8700 | 6316 | uiout->text ("\n"); |
c4093a6a JM |
6317 | } |
6318 | ||
556ec64d YQ |
6319 | if (!part_of_multiple) |
6320 | { | |
6321 | if (b->hit_count) | |
31f56a27 YQ |
6322 | { |
6323 | /* FIXME should make an annotation for this. */ | |
6324 | if (is_catchpoint (b)) | |
112e8700 | 6325 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6326 | else if (is_tracepoint (b)) |
112e8700 | 6327 | uiout->text ("\ttracepoint"); |
31f56a27 | 6328 | else |
112e8700 SM |
6329 | uiout->text ("\tbreakpoint"); |
6330 | uiout->text (" already hit "); | |
6331 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6332 | if (b->hit_count == 1) |
112e8700 | 6333 | uiout->text (" time\n"); |
31f56a27 | 6334 | else |
112e8700 | 6335 | uiout->text (" times\n"); |
31f56a27 | 6336 | } |
556ec64d YQ |
6337 | else |
6338 | { | |
31f56a27 | 6339 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6340 | if (uiout->is_mi_like_p ()) |
6341 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6342 | } |
6343 | } | |
8b93c638 | 6344 | |
0d381245 | 6345 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6346 | { |
6347 | annotate_field (8); | |
112e8700 SM |
6348 | uiout->text ("\tignore next "); |
6349 | uiout->field_int ("ignore", b->ignore_count); | |
6350 | uiout->text (" hits\n"); | |
c4093a6a | 6351 | } |
059fb39f | 6352 | |
816338b5 SS |
6353 | /* Note that an enable count of 1 corresponds to "enable once" |
6354 | behavior, which is reported by the combination of enablement and | |
6355 | disposition, so we don't need to mention it here. */ | |
6356 | if (!part_of_multiple && b->enable_count > 1) | |
6357 | { | |
6358 | annotate_field (8); | |
112e8700 | 6359 | uiout->text ("\tdisable after "); |
816338b5 SS |
6360 | /* Tweak the wording to clarify that ignore and enable counts |
6361 | are distinct, and have additive effect. */ | |
6362 | if (b->ignore_count) | |
112e8700 | 6363 | uiout->text ("additional "); |
816338b5 | 6364 | else |
112e8700 SM |
6365 | uiout->text ("next "); |
6366 | uiout->field_int ("enable", b->enable_count); | |
6367 | uiout->text (" hits\n"); | |
816338b5 SS |
6368 | } |
6369 | ||
f196051f SS |
6370 | if (!part_of_multiple && is_tracepoint (b)) |
6371 | { | |
6372 | struct tracepoint *tp = (struct tracepoint *) b; | |
6373 | ||
6374 | if (tp->traceframe_usage) | |
6375 | { | |
112e8700 SM |
6376 | uiout->text ("\ttrace buffer usage "); |
6377 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6378 | uiout->text (" bytes\n"); | |
f196051f SS |
6379 | } |
6380 | } | |
d3ce09f5 | 6381 | |
d1b0a7bf | 6382 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6383 | if (!part_of_multiple && l) |
c4093a6a JM |
6384 | { |
6385 | annotate_field (9); | |
2e783024 | 6386 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6387 | print_command_lines (uiout, l, 4); |
c4093a6a | 6388 | } |
d24317b4 | 6389 | |
d9b3f62e | 6390 | if (is_tracepoint (b)) |
1042e4c0 | 6391 | { |
d9b3f62e PA |
6392 | struct tracepoint *t = (struct tracepoint *) b; |
6393 | ||
6394 | if (!part_of_multiple && t->pass_count) | |
6395 | { | |
6396 | annotate_field (10); | |
112e8700 SM |
6397 | uiout->text ("\tpass count "); |
6398 | uiout->field_int ("pass", t->pass_count); | |
6399 | uiout->text (" \n"); | |
d9b3f62e | 6400 | } |
f2a8bc8a YQ |
6401 | |
6402 | /* Don't display it when tracepoint or tracepoint location is | |
6403 | pending. */ | |
6404 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6405 | { | |
6406 | annotate_field (11); | |
6407 | ||
112e8700 SM |
6408 | if (uiout->is_mi_like_p ()) |
6409 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6410 | loc->inserted ? "y" : "n"); |
6411 | else | |
6412 | { | |
6413 | if (loc->inserted) | |
112e8700 | 6414 | uiout->text ("\t"); |
f2a8bc8a | 6415 | else |
112e8700 SM |
6416 | uiout->text ("\tnot "); |
6417 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6418 | } |
6419 | } | |
1042e4c0 SS |
6420 | } |
6421 | ||
112e8700 | 6422 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6423 | { |
3a5c3e22 PA |
6424 | if (is_watchpoint (b)) |
6425 | { | |
6426 | struct watchpoint *w = (struct watchpoint *) b; | |
6427 | ||
112e8700 | 6428 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6429 | } |
f00aae0f | 6430 | else if (b->location != NULL |
d28cd78a | 6431 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6432 | uiout->field_string ("original-location", |
d28cd78a | 6433 | event_location_to_string (b->location.get ())); |
d24317b4 | 6434 | } |
c4093a6a | 6435 | } |
c5aa993b | 6436 | |
0d381245 VP |
6437 | static void |
6438 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6439 | struct bp_location **last_loc, |
6c95b8df | 6440 | int allflag) |
0d381245 | 6441 | { |
79a45e25 | 6442 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6443 | |
2e783024 TT |
6444 | { |
6445 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6446 | |
2e783024 TT |
6447 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6448 | } | |
0d381245 VP |
6449 | |
6450 | /* If this breakpoint has custom print function, | |
6451 | it's already printed. Otherwise, print individual | |
6452 | locations, if any. */ | |
6453 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6454 | { | |
4a64f543 MS |
6455 | /* If breakpoint has a single location that is disabled, we |
6456 | print it as if it had several locations, since otherwise it's | |
6457 | hard to represent "breakpoint enabled, location disabled" | |
6458 | situation. | |
6459 | ||
6460 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6461 | internally, that's not a property exposed to user. */ |
0d381245 | 6462 | if (b->loc |
a5606eee | 6463 | && !is_hardware_watchpoint (b) |
8d3788bd | 6464 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6465 | { |
6466 | struct bp_location *loc; | |
6467 | int n = 1; | |
8d3788bd | 6468 | |
0d381245 | 6469 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6470 | { |
2e783024 | 6471 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6472 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6473 | } |
0d381245 VP |
6474 | } |
6475 | } | |
6476 | } | |
6477 | ||
a6d9a66e UW |
6478 | static int |
6479 | breakpoint_address_bits (struct breakpoint *b) | |
6480 | { | |
6481 | int print_address_bits = 0; | |
6482 | struct bp_location *loc; | |
6483 | ||
c6d81124 PA |
6484 | /* Software watchpoints that aren't watching memory don't have an |
6485 | address to print. */ | |
6486 | if (is_no_memory_software_watchpoint (b)) | |
6487 | return 0; | |
6488 | ||
a6d9a66e UW |
6489 | for (loc = b->loc; loc; loc = loc->next) |
6490 | { | |
c7437ca6 PA |
6491 | int addr_bit; |
6492 | ||
c7437ca6 | 6493 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6494 | if (addr_bit > print_address_bits) |
6495 | print_address_bits = addr_bit; | |
6496 | } | |
6497 | ||
6498 | return print_address_bits; | |
6499 | } | |
0d381245 | 6500 | |
65630365 | 6501 | /* See breakpoint.h. */ |
c5aa993b | 6502 | |
65630365 PA |
6503 | void |
6504 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6505 | { |
a6d9a66e | 6506 | struct bp_location *dummy_loc = NULL; |
65630365 | 6507 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6508 | } |
c5aa993b | 6509 | |
09d682a4 TT |
6510 | /* Return true if this breakpoint was set by the user, false if it is |
6511 | internal or momentary. */ | |
6512 | ||
6513 | int | |
6514 | user_breakpoint_p (struct breakpoint *b) | |
6515 | { | |
46c6471b | 6516 | return b->number > 0; |
09d682a4 TT |
6517 | } |
6518 | ||
93daf339 TT |
6519 | /* See breakpoint.h. */ |
6520 | ||
6521 | int | |
6522 | pending_breakpoint_p (struct breakpoint *b) | |
6523 | { | |
6524 | return b->loc == NULL; | |
6525 | } | |
6526 | ||
7f3b0473 | 6527 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6528 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6529 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6530 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6531 | ones for which it returns non-zero. Return the total number of | |
6532 | breakpoints listed. */ | |
c906108c | 6533 | |
d77f58be | 6534 | static int |
4495129a | 6535 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6536 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6537 | { |
52f0bd74 | 6538 | struct breakpoint *b; |
a6d9a66e | 6539 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6540 | int nr_printable_breakpoints; |
79a45b7d | 6541 | struct value_print_options opts; |
a6d9a66e | 6542 | int print_address_bits = 0; |
269b11a2 | 6543 | int print_type_col_width = 14; |
79a45e25 | 6544 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6545 | |
79a45b7d TT |
6546 | get_user_print_options (&opts); |
6547 | ||
4a64f543 MS |
6548 | /* Compute the number of rows in the table, as well as the size |
6549 | required for address fields. */ | |
7f3b0473 AC |
6550 | nr_printable_breakpoints = 0; |
6551 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6552 | { |
6553 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6554 | if (filter && !filter (b)) | |
6555 | continue; | |
6556 | ||
6557 | /* If we have an "args" string, it is a list of breakpoints to | |
6558 | accept. Skip the others. */ | |
6559 | if (args != NULL && *args != '\0') | |
6560 | { | |
6561 | if (allflag && parse_and_eval_long (args) != b->number) | |
6562 | continue; | |
6563 | if (!allflag && !number_is_in_list (args, b->number)) | |
6564 | continue; | |
6565 | } | |
269b11a2 | 6566 | |
e5a67952 MS |
6567 | if (allflag || user_breakpoint_p (b)) |
6568 | { | |
6569 | int addr_bit, type_len; | |
a6d9a66e | 6570 | |
e5a67952 MS |
6571 | addr_bit = breakpoint_address_bits (b); |
6572 | if (addr_bit > print_address_bits) | |
6573 | print_address_bits = addr_bit; | |
269b11a2 | 6574 | |
e5a67952 MS |
6575 | type_len = strlen (bptype_string (b->type)); |
6576 | if (type_len > print_type_col_width) | |
6577 | print_type_col_width = type_len; | |
6578 | ||
6579 | nr_printable_breakpoints++; | |
6580 | } | |
6581 | } | |
7f3b0473 | 6582 | |
4a2b031d TT |
6583 | { |
6584 | ui_out_emit_table table_emitter (uiout, | |
6585 | opts.addressprint ? 6 : 5, | |
6586 | nr_printable_breakpoints, | |
6587 | "BreakpointTable"); | |
6588 | ||
6589 | if (nr_printable_breakpoints > 0) | |
6590 | annotate_breakpoints_headers (); | |
6591 | if (nr_printable_breakpoints > 0) | |
6592 | annotate_field (0); | |
6593 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6594 | if (nr_printable_breakpoints > 0) | |
6595 | annotate_field (1); | |
6596 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6597 | if (nr_printable_breakpoints > 0) | |
6598 | annotate_field (2); | |
6599 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6600 | if (nr_printable_breakpoints > 0) | |
6601 | annotate_field (3); | |
6602 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6603 | if (opts.addressprint) | |
6604 | { | |
6605 | if (nr_printable_breakpoints > 0) | |
6606 | annotate_field (4); | |
6607 | if (print_address_bits <= 32) | |
6608 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6609 | else | |
6610 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6611 | } | |
6612 | if (nr_printable_breakpoints > 0) | |
6613 | annotate_field (5); | |
6614 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6615 | uiout->table_body (); | |
6616 | if (nr_printable_breakpoints > 0) | |
6617 | annotate_breakpoints_table (); | |
6618 | ||
6619 | ALL_BREAKPOINTS (b) | |
6620 | { | |
6621 | QUIT; | |
6622 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6623 | if (filter && !filter (b)) | |
6624 | continue; | |
e5a67952 | 6625 | |
4a2b031d TT |
6626 | /* If we have an "args" string, it is a list of breakpoints to |
6627 | accept. Skip the others. */ | |
e5a67952 | 6628 | |
4a2b031d TT |
6629 | if (args != NULL && *args != '\0') |
6630 | { | |
6631 | if (allflag) /* maintenance info breakpoint */ | |
6632 | { | |
6633 | if (parse_and_eval_long (args) != b->number) | |
6634 | continue; | |
6635 | } | |
6636 | else /* all others */ | |
6637 | { | |
6638 | if (!number_is_in_list (args, b->number)) | |
6639 | continue; | |
6640 | } | |
6641 | } | |
6642 | /* We only print out user settable breakpoints unless the | |
6643 | allflag is set. */ | |
6644 | if (allflag || user_breakpoint_p (b)) | |
6645 | print_one_breakpoint (b, &last_loc, allflag); | |
6646 | } | |
6647 | } | |
698384cd | 6648 | |
7f3b0473 | 6649 | if (nr_printable_breakpoints == 0) |
c906108c | 6650 | { |
4a64f543 MS |
6651 | /* If there's a filter, let the caller decide how to report |
6652 | empty list. */ | |
d77f58be SS |
6653 | if (!filter) |
6654 | { | |
e5a67952 | 6655 | if (args == NULL || *args == '\0') |
112e8700 | 6656 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6657 | else |
112e8700 | 6658 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6659 | args); |
d77f58be | 6660 | } |
c906108c SS |
6661 | } |
6662 | else | |
c4093a6a | 6663 | { |
a6d9a66e UW |
6664 | if (last_loc && !server_command) |
6665 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6666 | } |
c906108c | 6667 | |
4a64f543 | 6668 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6669 | there have been breakpoints? */ |
c906108c | 6670 | annotate_breakpoints_table_end (); |
d77f58be SS |
6671 | |
6672 | return nr_printable_breakpoints; | |
c906108c SS |
6673 | } |
6674 | ||
ad443146 SS |
6675 | /* Display the value of default-collect in a way that is generally |
6676 | compatible with the breakpoint list. */ | |
6677 | ||
6678 | static void | |
6679 | default_collect_info (void) | |
6680 | { | |
79a45e25 PA |
6681 | struct ui_out *uiout = current_uiout; |
6682 | ||
ad443146 SS |
6683 | /* If it has no value (which is frequently the case), say nothing; a |
6684 | message like "No default-collect." gets in user's face when it's | |
6685 | not wanted. */ | |
6686 | if (!*default_collect) | |
6687 | return; | |
6688 | ||
6689 | /* The following phrase lines up nicely with per-tracepoint collect | |
6690 | actions. */ | |
112e8700 SM |
6691 | uiout->text ("default collect "); |
6692 | uiout->field_string ("default-collect", default_collect); | |
6693 | uiout->text (" \n"); | |
ad443146 SS |
6694 | } |
6695 | ||
c906108c | 6696 | static void |
0b39b52e | 6697 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6698 | { |
e5a67952 | 6699 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6700 | |
6701 | default_collect_info (); | |
d77f58be SS |
6702 | } |
6703 | ||
6704 | static void | |
1d12d88f | 6705 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6706 | { |
e5a67952 | 6707 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6708 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6709 | |
6710 | if (num_printed == 0) | |
6711 | { | |
e5a67952 | 6712 | if (args == NULL || *args == '\0') |
112e8700 | 6713 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6714 | else |
112e8700 | 6715 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6716 | } |
c906108c SS |
6717 | } |
6718 | ||
7a292a7a | 6719 | static void |
4495129a | 6720 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6721 | { |
e5a67952 | 6722 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6723 | |
6724 | default_collect_info (); | |
c906108c SS |
6725 | } |
6726 | ||
0d381245 | 6727 | static int |
714835d5 | 6728 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6729 | struct program_space *pspace, |
714835d5 | 6730 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6731 | { |
6732 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6733 | |
0d381245 VP |
6734 | for (; bl; bl = bl->next) |
6735 | { | |
6c95b8df PA |
6736 | if (bl->pspace == pspace |
6737 | && bl->address == pc | |
0d381245 VP |
6738 | && (!overlay_debugging || bl->section == section)) |
6739 | return 1; | |
6740 | } | |
6741 | return 0; | |
6742 | } | |
6743 | ||
672f9b60 | 6744 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6745 | concerns with logical breakpoints, so we match program spaces, not |
6746 | address spaces. */ | |
c906108c SS |
6747 | |
6748 | static void | |
6c95b8df PA |
6749 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6750 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6751 | struct obj_section *section, int thread) |
c906108c | 6752 | { |
52f0bd74 AC |
6753 | int others = 0; |
6754 | struct breakpoint *b; | |
c906108c SS |
6755 | |
6756 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6757 | others += (user_breakpoint_p (b) |
6758 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6759 | if (others > 0) |
6760 | { | |
a3f17187 AC |
6761 | if (others == 1) |
6762 | printf_filtered (_("Note: breakpoint ")); | |
6763 | else /* if (others == ???) */ | |
6764 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6765 | ALL_BREAKPOINTS (b) |
672f9b60 | 6766 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6767 | { |
6768 | others--; | |
6769 | printf_filtered ("%d", b->number); | |
6770 | if (b->thread == -1 && thread != -1) | |
6771 | printf_filtered (" (all threads)"); | |
6772 | else if (b->thread != -1) | |
6773 | printf_filtered (" (thread %d)", b->thread); | |
6774 | printf_filtered ("%s%s ", | |
059fb39f | 6775 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6776 | || b->enable_state == bp_call_disabled) |
0d381245 | 6777 | ? " (disabled)" |
0d381245 VP |
6778 | : ""), |
6779 | (others > 1) ? "," | |
6780 | : ((others == 1) ? " and" : "")); | |
6781 | } | |
a3f17187 | 6782 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6783 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6784 | printf_filtered (".\n"); |
6785 | } | |
6786 | } | |
6787 | \f | |
c906108c | 6788 | |
e4f237da | 6789 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6790 | BPT locations. For some breakpoint types, the locations' address members |
6791 | are irrelevant and it makes no sense to attempt to compare them to other | |
6792 | addresses (or use them for any other purpose either). | |
e4f237da | 6793 | |
4a64f543 | 6794 | More specifically, each of the following breakpoint types will |
244558af | 6795 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6796 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6797 | breakpoint location at address zero: |
e4f237da KB |
6798 | |
6799 | bp_watchpoint | |
2d134ed3 PA |
6800 | bp_catchpoint |
6801 | ||
6802 | */ | |
e4f237da KB |
6803 | |
6804 | static int | |
6805 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6806 | { | |
6807 | enum bptype type = bpt->type; | |
6808 | ||
2d134ed3 PA |
6809 | return (type != bp_watchpoint && type != bp_catchpoint); |
6810 | } | |
6811 | ||
6812 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6813 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6814 | ||
6815 | static int | |
4a64f543 MS |
6816 | watchpoint_locations_match (struct bp_location *loc1, |
6817 | struct bp_location *loc2) | |
2d134ed3 | 6818 | { |
3a5c3e22 PA |
6819 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6820 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6821 | ||
6822 | /* Both of them must exist. */ | |
6823 | gdb_assert (w1 != NULL); | |
6824 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6825 | |
4a64f543 MS |
6826 | /* If the target can evaluate the condition expression in hardware, |
6827 | then we we need to insert both watchpoints even if they are at | |
6828 | the same place. Otherwise the watchpoint will only trigger when | |
6829 | the condition of whichever watchpoint was inserted evaluates to | |
6830 | true, not giving a chance for GDB to check the condition of the | |
6831 | other watchpoint. */ | |
3a5c3e22 | 6832 | if ((w1->cond_exp |
4a64f543 MS |
6833 | && target_can_accel_watchpoint_condition (loc1->address, |
6834 | loc1->length, | |
0cf6dd15 | 6835 | loc1->watchpoint_type, |
4d01a485 | 6836 | w1->cond_exp.get ())) |
3a5c3e22 | 6837 | || (w2->cond_exp |
4a64f543 MS |
6838 | && target_can_accel_watchpoint_condition (loc2->address, |
6839 | loc2->length, | |
0cf6dd15 | 6840 | loc2->watchpoint_type, |
4d01a485 | 6841 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6842 | return 0; |
6843 | ||
85d721b8 PA |
6844 | /* Note that this checks the owner's type, not the location's. In |
6845 | case the target does not support read watchpoints, but does | |
6846 | support access watchpoints, we'll have bp_read_watchpoint | |
6847 | watchpoints with hw_access locations. Those should be considered | |
6848 | duplicates of hw_read locations. The hw_read locations will | |
6849 | become hw_access locations later. */ | |
2d134ed3 PA |
6850 | return (loc1->owner->type == loc2->owner->type |
6851 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6852 | && loc1->address == loc2->address | |
6853 | && loc1->length == loc2->length); | |
e4f237da KB |
6854 | } |
6855 | ||
31e77af2 | 6856 | /* See breakpoint.h. */ |
6c95b8df | 6857 | |
31e77af2 | 6858 | int |
accd0bcd YQ |
6859 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6860 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6861 | { |
f5656ead | 6862 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6863 | || aspace1 == aspace2) |
6864 | && addr1 == addr2); | |
6865 | } | |
6866 | ||
f1310107 TJB |
6867 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6868 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6869 | matches ASPACE2. On targets that have global breakpoints, the address | |
6870 | space doesn't really matter. */ | |
6871 | ||
6872 | static int | |
accd0bcd YQ |
6873 | breakpoint_address_match_range (const address_space *aspace1, |
6874 | CORE_ADDR addr1, | |
6875 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6876 | CORE_ADDR addr2) |
6877 | { | |
f5656ead | 6878 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6879 | || aspace1 == aspace2) |
6880 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6881 | } | |
6882 | ||
6883 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6884 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6885 | matches the breakpoint's address space. On targets that have global | |
6886 | breakpoints, the address space doesn't really matter. */ | |
6887 | ||
6888 | static int | |
6889 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6890 | const address_space *aspace, |
f1310107 TJB |
6891 | CORE_ADDR addr) |
6892 | { | |
6893 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6894 | aspace, addr) | |
6895 | || (bl->length | |
6896 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6897 | bl->address, bl->length, | |
6898 | aspace, addr))); | |
6899 | } | |
6900 | ||
d35ae833 PA |
6901 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6902 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6903 | match happens only if ASPACE matches the breakpoint's address | |
6904 | space. On targets that have global breakpoints, the address space | |
6905 | doesn't really matter. */ | |
6906 | ||
6907 | static int | |
6908 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6909 | const address_space *aspace, |
d35ae833 PA |
6910 | CORE_ADDR addr, int len) |
6911 | { | |
6912 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6913 | || bl->pspace->aspace == aspace) | |
6914 | { | |
6915 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6916 | ||
6917 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6918 | return 1; | |
6919 | } | |
6920 | return 0; | |
6921 | } | |
6922 | ||
1e4d1764 YQ |
6923 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6924 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6925 | true, otherwise returns false. */ | |
6926 | ||
6927 | static int | |
6928 | tracepoint_locations_match (struct bp_location *loc1, | |
6929 | struct bp_location *loc2) | |
6930 | { | |
6931 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6932 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6933 | locations at the same address of different tracepoints are regarded as | |
6934 | different locations. */ | |
6935 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6936 | else | |
6937 | return 0; | |
6938 | } | |
6939 | ||
2d134ed3 PA |
6940 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6941 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6942 | represent the same location. */ | |
6943 | ||
6944 | static int | |
4a64f543 MS |
6945 | breakpoint_locations_match (struct bp_location *loc1, |
6946 | struct bp_location *loc2) | |
2d134ed3 | 6947 | { |
2bdf28a0 JK |
6948 | int hw_point1, hw_point2; |
6949 | ||
6950 | /* Both of them must not be in moribund_locations. */ | |
6951 | gdb_assert (loc1->owner != NULL); | |
6952 | gdb_assert (loc2->owner != NULL); | |
6953 | ||
6954 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6955 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6956 | |
6957 | if (hw_point1 != hw_point2) | |
6958 | return 0; | |
6959 | else if (hw_point1) | |
6960 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6961 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6962 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6963 | else |
f1310107 TJB |
6964 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6965 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6966 | loc2->pspace->aspace, loc2->address) | |
6967 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6968 | } |
6969 | ||
76897487 KB |
6970 | static void |
6971 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6972 | int bnum, int have_bnum) | |
6973 | { | |
f63fbe86 MS |
6974 | /* The longest string possibly returned by hex_string_custom |
6975 | is 50 chars. These must be at least that big for safety. */ | |
6976 | char astr1[64]; | |
6977 | char astr2[64]; | |
76897487 | 6978 | |
bb599908 PH |
6979 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6980 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6981 | if (have_bnum) |
8a3fe4f8 | 6982 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6983 | bnum, astr1, astr2); |
6984 | else | |
8a3fe4f8 | 6985 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6986 | } |
6987 | ||
4a64f543 MS |
6988 | /* Adjust a breakpoint's address to account for architectural |
6989 | constraints on breakpoint placement. Return the adjusted address. | |
6990 | Note: Very few targets require this kind of adjustment. For most | |
6991 | targets, this function is simply the identity function. */ | |
76897487 KB |
6992 | |
6993 | static CORE_ADDR | |
a6d9a66e UW |
6994 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6995 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6996 | { |
a6d9a66e | 6997 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6998 | { |
6999 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7000 | return bpaddr; | |
7001 | } | |
88f7da05 KB |
7002 | else if (bptype == bp_watchpoint |
7003 | || bptype == bp_hardware_watchpoint | |
7004 | || bptype == bp_read_watchpoint | |
7005 | || bptype == bp_access_watchpoint | |
fe798b75 | 7006 | || bptype == bp_catchpoint) |
88f7da05 KB |
7007 | { |
7008 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7009 | have their addresses modified. */ | |
7010 | return bpaddr; | |
7011 | } | |
7c16b83e PA |
7012 | else if (bptype == bp_single_step) |
7013 | { | |
7014 | /* Single-step breakpoints should not have their addresses | |
7015 | modified. If there's any architectural constrain that | |
7016 | applies to this address, then it should have already been | |
7017 | taken into account when the breakpoint was created in the | |
7018 | first place. If we didn't do this, stepping through e.g., | |
7019 | Thumb-2 IT blocks would break. */ | |
7020 | return bpaddr; | |
7021 | } | |
76897487 KB |
7022 | else |
7023 | { | |
7024 | CORE_ADDR adjusted_bpaddr; | |
7025 | ||
7026 | /* Some targets have architectural constraints on the placement | |
7027 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7028 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7029 | |
7030 | /* An adjusted breakpoint address can significantly alter | |
7031 | a user's expectations. Print a warning if an adjustment | |
7032 | is required. */ | |
7033 | if (adjusted_bpaddr != bpaddr) | |
7034 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7035 | ||
7036 | return adjusted_bpaddr; | |
7037 | } | |
7038 | } | |
7039 | ||
5625a286 | 7040 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7041 | { |
5625a286 | 7042 | bp_location *loc = this; |
7cc221ef | 7043 | |
348d480f PA |
7044 | gdb_assert (ops != NULL); |
7045 | ||
28010a5d PA |
7046 | loc->ops = ops; |
7047 | loc->owner = owner; | |
b775012e | 7048 | loc->cond_bytecode = NULL; |
0d381245 VP |
7049 | loc->shlib_disabled = 0; |
7050 | loc->enabled = 1; | |
e049a4b5 | 7051 | |
28010a5d | 7052 | switch (owner->type) |
e049a4b5 DJ |
7053 | { |
7054 | case bp_breakpoint: | |
7c16b83e | 7055 | case bp_single_step: |
e049a4b5 DJ |
7056 | case bp_until: |
7057 | case bp_finish: | |
7058 | case bp_longjmp: | |
7059 | case bp_longjmp_resume: | |
e2e4d78b | 7060 | case bp_longjmp_call_dummy: |
186c406b TT |
7061 | case bp_exception: |
7062 | case bp_exception_resume: | |
e049a4b5 | 7063 | case bp_step_resume: |
2c03e5be | 7064 | case bp_hp_step_resume: |
e049a4b5 DJ |
7065 | case bp_watchpoint_scope: |
7066 | case bp_call_dummy: | |
aa7d318d | 7067 | case bp_std_terminate: |
e049a4b5 DJ |
7068 | case bp_shlib_event: |
7069 | case bp_thread_event: | |
7070 | case bp_overlay_event: | |
4efc6507 | 7071 | case bp_jit_event: |
0fd8e87f | 7072 | case bp_longjmp_master: |
aa7d318d | 7073 | case bp_std_terminate_master: |
186c406b | 7074 | case bp_exception_master: |
0e30163f JK |
7075 | case bp_gnu_ifunc_resolver: |
7076 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7077 | case bp_dprintf: |
e049a4b5 | 7078 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7079 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7080 | break; |
7081 | case bp_hardware_breakpoint: | |
7082 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7083 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7084 | break; |
7085 | case bp_hardware_watchpoint: | |
7086 | case bp_read_watchpoint: | |
7087 | case bp_access_watchpoint: | |
7088 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7089 | break; | |
7090 | case bp_watchpoint: | |
ce78b96d | 7091 | case bp_catchpoint: |
15c3d785 PA |
7092 | case bp_tracepoint: |
7093 | case bp_fast_tracepoint: | |
0fb4aa4b | 7094 | case bp_static_tracepoint: |
e049a4b5 DJ |
7095 | loc->loc_type = bp_loc_other; |
7096 | break; | |
7097 | default: | |
e2e0b3e5 | 7098 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7099 | } |
7100 | ||
f431efe5 | 7101 | loc->refc = 1; |
28010a5d PA |
7102 | } |
7103 | ||
7104 | /* Allocate a struct bp_location. */ | |
7105 | ||
7106 | static struct bp_location * | |
7107 | allocate_bp_location (struct breakpoint *bpt) | |
7108 | { | |
348d480f PA |
7109 | return bpt->ops->allocate_location (bpt); |
7110 | } | |
7cc221ef | 7111 | |
f431efe5 PA |
7112 | static void |
7113 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7114 | { |
348d480f | 7115 | loc->ops->dtor (loc); |
4d01a485 | 7116 | delete loc; |
fe3f5fa8 VP |
7117 | } |
7118 | ||
f431efe5 PA |
7119 | /* Increment reference count. */ |
7120 | ||
7121 | static void | |
7122 | incref_bp_location (struct bp_location *bl) | |
7123 | { | |
7124 | ++bl->refc; | |
7125 | } | |
7126 | ||
7127 | /* Decrement reference count. If the reference count reaches 0, | |
7128 | destroy the bp_location. Sets *BLP to NULL. */ | |
7129 | ||
7130 | static void | |
7131 | decref_bp_location (struct bp_location **blp) | |
7132 | { | |
0807b50c PA |
7133 | gdb_assert ((*blp)->refc > 0); |
7134 | ||
f431efe5 PA |
7135 | if (--(*blp)->refc == 0) |
7136 | free_bp_location (*blp); | |
7137 | *blp = NULL; | |
7138 | } | |
7139 | ||
346774a9 | 7140 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7141 | |
b270e6f9 TT |
7142 | static breakpoint * |
7143 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7144 | { |
346774a9 | 7145 | struct breakpoint *b1; |
b270e6f9 | 7146 | struct breakpoint *result = b.get (); |
c906108c | 7147 | |
346774a9 PA |
7148 | /* Add this breakpoint to the end of the chain so that a list of |
7149 | breakpoints will come out in order of increasing numbers. */ | |
7150 | ||
7151 | b1 = breakpoint_chain; | |
7152 | if (b1 == 0) | |
b270e6f9 | 7153 | breakpoint_chain = b.release (); |
346774a9 PA |
7154 | else |
7155 | { | |
7156 | while (b1->next) | |
7157 | b1 = b1->next; | |
b270e6f9 | 7158 | b1->next = b.release (); |
346774a9 | 7159 | } |
b270e6f9 TT |
7160 | |
7161 | return result; | |
346774a9 PA |
7162 | } |
7163 | ||
7164 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7165 | ||
7166 | static void | |
7167 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7168 | struct gdbarch *gdbarch, | |
28010a5d | 7169 | enum bptype bptype, |
c0a91b2b | 7170 | const struct breakpoint_ops *ops) |
346774a9 | 7171 | { |
348d480f PA |
7172 | gdb_assert (ops != NULL); |
7173 | ||
28010a5d | 7174 | b->ops = ops; |
4d28f7a8 | 7175 | b->type = bptype; |
a6d9a66e | 7176 | b->gdbarch = gdbarch; |
c906108c SS |
7177 | b->language = current_language->la_language; |
7178 | b->input_radix = input_radix; | |
d0fb5eae | 7179 | b->related_breakpoint = b; |
346774a9 PA |
7180 | } |
7181 | ||
7182 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7183 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7184 | |
7185 | static struct breakpoint * | |
7186 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7187 | enum bptype bptype, |
c0a91b2b | 7188 | const struct breakpoint_ops *ops) |
346774a9 | 7189 | { |
3b0871f4 | 7190 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7191 | |
3b0871f4 | 7192 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7193 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7194 | } |
7195 | ||
0e30163f JK |
7196 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7197 | resolutions should be made as the user specified the location explicitly | |
7198 | enough. */ | |
7199 | ||
0d381245 | 7200 | static void |
0e30163f | 7201 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7202 | { |
2bdf28a0 JK |
7203 | gdb_assert (loc->owner != NULL); |
7204 | ||
0d381245 | 7205 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7206 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7207 | || is_tracepoint (loc->owner)) |
0d381245 | 7208 | { |
0e30163f | 7209 | int is_gnu_ifunc; |
2c02bd72 | 7210 | const char *function_name; |
6a3a010b | 7211 | CORE_ADDR func_addr; |
0e30163f | 7212 | |
2c02bd72 | 7213 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7214 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7215 | |
7216 | if (is_gnu_ifunc && !explicit_loc) | |
7217 | { | |
7218 | struct breakpoint *b = loc->owner; | |
7219 | ||
7220 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7221 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7222 | &loc->requested_address)) |
7223 | { | |
7224 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7225 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7226 | loc->requested_address, | |
7227 | b->type); | |
7228 | } | |
7229 | else if (b->type == bp_breakpoint && b->loc == loc | |
7230 | && loc->next == NULL && b->related_breakpoint == b) | |
7231 | { | |
7232 | /* Create only the whole new breakpoint of this type but do not | |
7233 | mess more complicated breakpoints with multiple locations. */ | |
7234 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7235 | /* Remember the resolver's address for use by the return |
7236 | breakpoint. */ | |
7237 | loc->related_address = func_addr; | |
0e30163f JK |
7238 | } |
7239 | } | |
7240 | ||
2c02bd72 DE |
7241 | if (function_name) |
7242 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7243 | } |
7244 | } | |
7245 | ||
a6d9a66e | 7246 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7247 | struct gdbarch * |
a6d9a66e UW |
7248 | get_sal_arch (struct symtab_and_line sal) |
7249 | { | |
7250 | if (sal.section) | |
7251 | return get_objfile_arch (sal.section->objfile); | |
7252 | if (sal.symtab) | |
eb822aa6 | 7253 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7254 | |
7255 | return NULL; | |
7256 | } | |
7257 | ||
346774a9 PA |
7258 | /* Low level routine for partially initializing a breakpoint of type |
7259 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7260 | file name, and line number are provided by SAL. |
0d381245 VP |
7261 | |
7262 | It is expected that the caller will complete the initialization of | |
7263 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7264 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7265 | |
346774a9 PA |
7266 | static void |
7267 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7268 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7269 | const struct breakpoint_ops *ops) |
0d381245 | 7270 | { |
28010a5d | 7271 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7272 | |
3742cc8b | 7273 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7274 | |
6c95b8df PA |
7275 | if (bptype != bp_catchpoint) |
7276 | gdb_assert (sal.pspace != NULL); | |
7277 | ||
f8eba3c6 TT |
7278 | /* Store the program space that was used to set the breakpoint, |
7279 | except for ordinary breakpoints, which are independent of the | |
7280 | program space. */ | |
7281 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7282 | b->pspace = sal.pspace; | |
346774a9 | 7283 | } |
c906108c | 7284 | |
346774a9 PA |
7285 | /* set_raw_breakpoint is a low level routine for allocating and |
7286 | partially initializing a breakpoint of type BPTYPE. The newly | |
7287 | created breakpoint's address, section, source file name, and line | |
7288 | number are provided by SAL. The newly created and partially | |
7289 | initialized breakpoint is added to the breakpoint chain and | |
7290 | is also returned as the value of this function. | |
7291 | ||
7292 | It is expected that the caller will complete the initialization of | |
7293 | the newly created breakpoint struct as well as output any status | |
7294 | information regarding the creation of a new breakpoint. In | |
7295 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7296 | number! Care should be taken to not allow an error to occur | |
7297 | prior to completing the initialization of the breakpoint. If this | |
7298 | should happen, a bogus breakpoint will be left on the chain. */ | |
7299 | ||
7300 | struct breakpoint * | |
7301 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7302 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7303 | const struct breakpoint_ops *ops) |
346774a9 | 7304 | { |
3b0871f4 | 7305 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7306 | |
3b0871f4 | 7307 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7308 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7309 | } |
7310 | ||
53a5351d | 7311 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7312 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7313 | initiated the operation. */ | |
c906108c SS |
7314 | |
7315 | void | |
186c406b | 7316 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7317 | { |
35df4500 | 7318 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7319 | int thread = tp->global_num; |
0fd8e87f UW |
7320 | |
7321 | /* To avoid having to rescan all objfile symbols at every step, | |
7322 | we maintain a list of continually-inserted but always disabled | |
7323 | longjmp "master" breakpoints. Here, we simply create momentary | |
7324 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7325 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7326 | if (b->pspace == current_program_space |
186c406b TT |
7327 | && (b->type == bp_longjmp_master |
7328 | || b->type == bp_exception_master)) | |
0fd8e87f | 7329 | { |
06edf0c0 PA |
7330 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7331 | struct breakpoint *clone; | |
cc59ec59 | 7332 | |
e2e4d78b JK |
7333 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7334 | after their removal. */ | |
06edf0c0 | 7335 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7336 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7337 | clone->thread = thread; |
7338 | } | |
186c406b TT |
7339 | |
7340 | tp->initiating_frame = frame; | |
c906108c SS |
7341 | } |
7342 | ||
611c83ae | 7343 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7344 | void |
611c83ae | 7345 | delete_longjmp_breakpoint (int thread) |
c906108c | 7346 | { |
35df4500 | 7347 | struct breakpoint *b, *b_tmp; |
c906108c | 7348 | |
35df4500 | 7349 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7350 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7351 | { |
7352 | if (b->thread == thread) | |
7353 | delete_breakpoint (b); | |
7354 | } | |
c906108c SS |
7355 | } |
7356 | ||
f59f708a PA |
7357 | void |
7358 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7359 | { | |
7360 | struct breakpoint *b, *b_tmp; | |
7361 | ||
7362 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7363 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7364 | { | |
7365 | if (b->thread == thread) | |
7366 | b->disposition = disp_del_at_next_stop; | |
7367 | } | |
7368 | } | |
7369 | ||
e2e4d78b JK |
7370 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7371 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7372 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7373 | breakpoints. */ | |
7374 | ||
7375 | struct breakpoint * | |
7376 | set_longjmp_breakpoint_for_call_dummy (void) | |
7377 | { | |
7378 | struct breakpoint *b, *retval = NULL; | |
7379 | ||
7380 | ALL_BREAKPOINTS (b) | |
7381 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7382 | { | |
7383 | struct breakpoint *new_b; | |
7384 | ||
7385 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7386 | &momentary_breakpoint_ops, |
7387 | 1); | |
5d5658a1 | 7388 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7389 | |
7390 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7391 | ||
7392 | gdb_assert (new_b->related_breakpoint == new_b); | |
7393 | if (retval == NULL) | |
7394 | retval = new_b; | |
7395 | new_b->related_breakpoint = retval; | |
7396 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7397 | retval = retval->related_breakpoint; | |
7398 | retval->related_breakpoint = new_b; | |
7399 | } | |
7400 | ||
7401 | return retval; | |
7402 | } | |
7403 | ||
7404 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7405 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7406 | stack. |
7407 | ||
7408 | You should call this function only at places where it is safe to currently | |
7409 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7410 | frames. */ | |
7411 | ||
7412 | void | |
b67a2c6f | 7413 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7414 | { |
7415 | struct breakpoint *b, *b_tmp; | |
7416 | ||
7417 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7418 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7419 | { |
7420 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7421 | ||
7422 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7423 | dummy_b = dummy_b->related_breakpoint; | |
7424 | if (dummy_b->type != bp_call_dummy | |
7425 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7426 | continue; | |
7427 | ||
b67a2c6f | 7428 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7429 | |
7430 | while (b->related_breakpoint != b) | |
7431 | { | |
7432 | if (b_tmp == b->related_breakpoint) | |
7433 | b_tmp = b->related_breakpoint->next; | |
7434 | delete_breakpoint (b->related_breakpoint); | |
7435 | } | |
7436 | delete_breakpoint (b); | |
7437 | } | |
7438 | } | |
7439 | ||
1900040c MS |
7440 | void |
7441 | enable_overlay_breakpoints (void) | |
7442 | { | |
52f0bd74 | 7443 | struct breakpoint *b; |
1900040c MS |
7444 | |
7445 | ALL_BREAKPOINTS (b) | |
7446 | if (b->type == bp_overlay_event) | |
7447 | { | |
7448 | b->enable_state = bp_enabled; | |
44702360 | 7449 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7450 | overlay_events_enabled = 1; |
1900040c MS |
7451 | } |
7452 | } | |
7453 | ||
7454 | void | |
7455 | disable_overlay_breakpoints (void) | |
7456 | { | |
52f0bd74 | 7457 | struct breakpoint *b; |
1900040c MS |
7458 | |
7459 | ALL_BREAKPOINTS (b) | |
7460 | if (b->type == bp_overlay_event) | |
7461 | { | |
7462 | b->enable_state = bp_disabled; | |
44702360 | 7463 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7464 | overlay_events_enabled = 0; |
1900040c MS |
7465 | } |
7466 | } | |
7467 | ||
aa7d318d TT |
7468 | /* Set an active std::terminate breakpoint for each std::terminate |
7469 | master breakpoint. */ | |
7470 | void | |
7471 | set_std_terminate_breakpoint (void) | |
7472 | { | |
35df4500 | 7473 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7474 | |
35df4500 | 7475 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7476 | if (b->pspace == current_program_space |
7477 | && b->type == bp_std_terminate_master) | |
7478 | { | |
06edf0c0 | 7479 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7480 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7481 | } |
7482 | } | |
7483 | ||
7484 | /* Delete all the std::terminate breakpoints. */ | |
7485 | void | |
7486 | delete_std_terminate_breakpoint (void) | |
7487 | { | |
35df4500 | 7488 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7489 | |
35df4500 | 7490 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7491 | if (b->type == bp_std_terminate) |
7492 | delete_breakpoint (b); | |
7493 | } | |
7494 | ||
c4093a6a | 7495 | struct breakpoint * |
a6d9a66e | 7496 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7497 | { |
7498 | struct breakpoint *b; | |
c4093a6a | 7499 | |
06edf0c0 PA |
7500 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7501 | &internal_breakpoint_ops); | |
7502 | ||
b5de0fa7 | 7503 | b->enable_state = bp_enabled; |
f00aae0f | 7504 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7505 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7506 | |
44702360 | 7507 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7508 | |
c4093a6a JM |
7509 | return b; |
7510 | } | |
7511 | ||
0101ce28 JJ |
7512 | struct lang_and_radix |
7513 | { | |
7514 | enum language lang; | |
7515 | int radix; | |
7516 | }; | |
7517 | ||
4efc6507 DE |
7518 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7519 | ||
7520 | struct breakpoint * | |
7521 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7522 | { | |
2a7f3dff PA |
7523 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7524 | &internal_breakpoint_ops); | |
4efc6507 | 7525 | } |
0101ce28 | 7526 | |
03673fc7 PP |
7527 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7528 | ||
7529 | void | |
7530 | remove_jit_event_breakpoints (void) | |
7531 | { | |
7532 | struct breakpoint *b, *b_tmp; | |
7533 | ||
7534 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7535 | if (b->type == bp_jit_event | |
7536 | && b->loc->pspace == current_program_space) | |
7537 | delete_breakpoint (b); | |
7538 | } | |
7539 | ||
cae688ec JJ |
7540 | void |
7541 | remove_solib_event_breakpoints (void) | |
7542 | { | |
35df4500 | 7543 | struct breakpoint *b, *b_tmp; |
cae688ec | 7544 | |
35df4500 | 7545 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7546 | if (b->type == bp_shlib_event |
7547 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7548 | delete_breakpoint (b); |
7549 | } | |
7550 | ||
f37f681c PA |
7551 | /* See breakpoint.h. */ |
7552 | ||
7553 | void | |
7554 | remove_solib_event_breakpoints_at_next_stop (void) | |
7555 | { | |
7556 | struct breakpoint *b, *b_tmp; | |
7557 | ||
7558 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7559 | if (b->type == bp_shlib_event | |
7560 | && b->loc->pspace == current_program_space) | |
7561 | b->disposition = disp_del_at_next_stop; | |
7562 | } | |
7563 | ||
04086b45 PA |
7564 | /* Helper for create_solib_event_breakpoint / |
7565 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7566 | INSERT_MODE to pass through to update_global_location_list. */ | |
7567 | ||
7568 | static struct breakpoint * | |
7569 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7570 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7571 | { |
7572 | struct breakpoint *b; | |
7573 | ||
06edf0c0 PA |
7574 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7575 | &internal_breakpoint_ops); | |
04086b45 | 7576 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7577 | return b; |
7578 | } | |
7579 | ||
04086b45 PA |
7580 | struct breakpoint * |
7581 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7582 | { | |
7583 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7584 | } | |
7585 | ||
f37f681c PA |
7586 | /* See breakpoint.h. */ |
7587 | ||
7588 | struct breakpoint * | |
7589 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7590 | { | |
7591 | struct breakpoint *b; | |
7592 | ||
04086b45 PA |
7593 | /* Explicitly tell update_global_location_list to insert |
7594 | locations. */ | |
7595 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7596 | if (!b->loc->inserted) |
7597 | { | |
7598 | delete_breakpoint (b); | |
7599 | return NULL; | |
7600 | } | |
7601 | return b; | |
7602 | } | |
7603 | ||
cae688ec JJ |
7604 | /* Disable any breakpoints that are on code in shared libraries. Only |
7605 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7606 | ||
7607 | void | |
cb851954 | 7608 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7609 | { |
876fa593 | 7610 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7611 | |
876fa593 | 7612 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7613 | { |
2bdf28a0 | 7614 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7615 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7616 | |
4a64f543 MS |
7617 | /* We apply the check to all breakpoints, including disabled for |
7618 | those with loc->duplicate set. This is so that when breakpoint | |
7619 | becomes enabled, or the duplicate is removed, gdb will try to | |
7620 | insert all breakpoints. If we don't set shlib_disabled here, | |
7621 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7622 | if (((b->type == bp_breakpoint) |
508ccb1f | 7623 | || (b->type == bp_jit_event) |
1042e4c0 | 7624 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7625 | || (is_tracepoint (b))) |
6c95b8df | 7626 | && loc->pspace == current_program_space |
0d381245 | 7627 | && !loc->shlib_disabled |
6c95b8df | 7628 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7629 | ) |
0d381245 VP |
7630 | { |
7631 | loc->shlib_disabled = 1; | |
7632 | } | |
cae688ec JJ |
7633 | } |
7634 | } | |
7635 | ||
63644780 NB |
7636 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7637 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7638 | disabled ones can just stay disabled. */ | |
84acb35a | 7639 | |
75149521 | 7640 | static void |
84acb35a JJ |
7641 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7642 | { | |
876fa593 | 7643 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7644 | int disabled_shlib_breaks = 0; |
7645 | ||
876fa593 | 7646 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7647 | { |
2bdf28a0 | 7648 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7649 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7650 | |
1e4d1764 | 7651 | if (solib->pspace == loc->pspace |
e2dd7057 | 7652 | && !loc->shlib_disabled |
1e4d1764 YQ |
7653 | && (((b->type == bp_breakpoint |
7654 | || b->type == bp_jit_event | |
7655 | || b->type == bp_hardware_breakpoint) | |
7656 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7657 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7658 | || is_tracepoint (b)) | |
e2dd7057 | 7659 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7660 | { |
e2dd7057 PP |
7661 | loc->shlib_disabled = 1; |
7662 | /* At this point, we cannot rely on remove_breakpoint | |
7663 | succeeding so we must mark the breakpoint as not inserted | |
7664 | to prevent future errors occurring in remove_breakpoints. */ | |
7665 | loc->inserted = 0; | |
8d3788bd VP |
7666 | |
7667 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7668 | observer_notify_breakpoint_modified (b); | |
7669 | ||
e2dd7057 PP |
7670 | if (!disabled_shlib_breaks) |
7671 | { | |
223ffa71 | 7672 | target_terminal::ours_for_output (); |
3e43a32a MS |
7673 | warning (_("Temporarily disabling breakpoints " |
7674 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7675 | solib->so_name); |
84acb35a | 7676 | } |
e2dd7057 | 7677 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7678 | } |
7679 | } | |
84acb35a JJ |
7680 | } |
7681 | ||
63644780 NB |
7682 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7683 | notification of free_objfile. Only apply to enabled breakpoints, | |
7684 | disabled ones can just stay disabled. */ | |
7685 | ||
7686 | static void | |
7687 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7688 | { | |
7689 | struct breakpoint *b; | |
7690 | ||
7691 | if (objfile == NULL) | |
7692 | return; | |
7693 | ||
d03de421 PA |
7694 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7695 | managed by the user with add-symbol-file/remove-symbol-file. | |
7696 | Similarly to how breakpoints in shared libraries are handled in | |
7697 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7698 | shlib_disabled so they end up uninserted on the next global |
7699 | location list update. Shared libraries not loaded by the user | |
7700 | aren't handled here -- they're already handled in | |
7701 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7702 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7703 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7704 | main objfile). */ | |
7705 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7706 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7707 | return; |
7708 | ||
7709 | ALL_BREAKPOINTS (b) | |
7710 | { | |
7711 | struct bp_location *loc; | |
7712 | int bp_modified = 0; | |
7713 | ||
7714 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7715 | continue; | |
7716 | ||
7717 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7718 | { | |
7719 | CORE_ADDR loc_addr = loc->address; | |
7720 | ||
7721 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7722 | && loc->loc_type != bp_loc_software_breakpoint) | |
7723 | continue; | |
7724 | ||
7725 | if (loc->shlib_disabled != 0) | |
7726 | continue; | |
7727 | ||
7728 | if (objfile->pspace != loc->pspace) | |
7729 | continue; | |
7730 | ||
7731 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7732 | && loc->loc_type != bp_loc_software_breakpoint) | |
7733 | continue; | |
7734 | ||
7735 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7736 | { | |
7737 | loc->shlib_disabled = 1; | |
08351840 PA |
7738 | /* At this point, we don't know whether the object was |
7739 | unmapped from the inferior or not, so leave the | |
7740 | inserted flag alone. We'll handle failure to | |
7741 | uninsert quietly, in case the object was indeed | |
7742 | unmapped. */ | |
63644780 NB |
7743 | |
7744 | mark_breakpoint_location_modified (loc); | |
7745 | ||
7746 | bp_modified = 1; | |
7747 | } | |
7748 | } | |
7749 | ||
7750 | if (bp_modified) | |
7751 | observer_notify_breakpoint_modified (b); | |
7752 | } | |
7753 | } | |
7754 | ||
ce78b96d JB |
7755 | /* FORK & VFORK catchpoints. */ |
7756 | ||
e29a4733 | 7757 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7758 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7759 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7760 | |
c1fc2657 | 7761 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7762 | { |
e29a4733 PA |
7763 | /* Process id of a child process whose forking triggered this |
7764 | catchpoint. This field is only valid immediately after this | |
7765 | catchpoint has triggered. */ | |
7766 | ptid_t forked_inferior_pid; | |
7767 | }; | |
7768 | ||
4a64f543 MS |
7769 | /* Implement the "insert" breakpoint_ops method for fork |
7770 | catchpoints. */ | |
ce78b96d | 7771 | |
77b06cd7 TJB |
7772 | static int |
7773 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7774 | { |
dfd4cc63 | 7775 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7776 | } |
7777 | ||
4a64f543 MS |
7778 | /* Implement the "remove" breakpoint_ops method for fork |
7779 | catchpoints. */ | |
ce78b96d JB |
7780 | |
7781 | static int | |
73971819 | 7782 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7783 | { |
dfd4cc63 | 7784 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7785 | } |
7786 | ||
7787 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7788 | catchpoints. */ | |
7789 | ||
7790 | static int | |
f1310107 | 7791 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7792 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7793 | const struct target_waitstatus *ws) |
ce78b96d | 7794 | { |
e29a4733 PA |
7795 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7796 | ||
f90263c1 TT |
7797 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7798 | return 0; | |
7799 | ||
7800 | c->forked_inferior_pid = ws->value.related_pid; | |
7801 | return 1; | |
ce78b96d JB |
7802 | } |
7803 | ||
4a64f543 MS |
7804 | /* Implement the "print_it" breakpoint_ops method for fork |
7805 | catchpoints. */ | |
ce78b96d JB |
7806 | |
7807 | static enum print_stop_action | |
348d480f | 7808 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7809 | { |
36dfb11c | 7810 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7811 | struct breakpoint *b = bs->breakpoint_at; |
7812 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7813 | |
ce78b96d | 7814 | annotate_catchpoint (b->number); |
f303dbd6 | 7815 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7816 | if (b->disposition == disp_del) |
112e8700 | 7817 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7818 | else |
112e8700 SM |
7819 | uiout->text ("Catchpoint "); |
7820 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7821 | { |
112e8700 SM |
7822 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7823 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7824 | } |
112e8700 SM |
7825 | uiout->field_int ("bkptno", b->number); |
7826 | uiout->text (" (forked process "); | |
7827 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7828 | uiout->text ("), "); | |
ce78b96d JB |
7829 | return PRINT_SRC_AND_LOC; |
7830 | } | |
7831 | ||
4a64f543 MS |
7832 | /* Implement the "print_one" breakpoint_ops method for fork |
7833 | catchpoints. */ | |
ce78b96d JB |
7834 | |
7835 | static void | |
a6d9a66e | 7836 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7837 | { |
e29a4733 | 7838 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7839 | struct value_print_options opts; |
79a45e25 | 7840 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7841 | |
7842 | get_user_print_options (&opts); | |
7843 | ||
4a64f543 MS |
7844 | /* Field 4, the address, is omitted (which makes the columns not |
7845 | line up too nicely with the headers, but the effect is relatively | |
7846 | readable). */ | |
79a45b7d | 7847 | if (opts.addressprint) |
112e8700 | 7848 | uiout->field_skip ("addr"); |
ce78b96d | 7849 | annotate_field (5); |
112e8700 | 7850 | uiout->text ("fork"); |
e29a4733 | 7851 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7852 | { |
112e8700 SM |
7853 | uiout->text (", process "); |
7854 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7855 | uiout->spaces (1); | |
ce78b96d | 7856 | } |
8ac3646f | 7857 | |
112e8700 SM |
7858 | if (uiout->is_mi_like_p ()) |
7859 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7860 | } |
7861 | ||
7862 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7863 | catchpoints. */ | |
7864 | ||
7865 | static void | |
7866 | print_mention_catch_fork (struct breakpoint *b) | |
7867 | { | |
7868 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7869 | } | |
7870 | ||
6149aea9 PA |
7871 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7872 | catchpoints. */ | |
7873 | ||
7874 | static void | |
7875 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7876 | { | |
7877 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7878 | print_recreate_thread (b, fp); |
6149aea9 PA |
7879 | } |
7880 | ||
ce78b96d JB |
7881 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7882 | ||
2060206e | 7883 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7884 | |
4a64f543 MS |
7885 | /* Implement the "insert" breakpoint_ops method for vfork |
7886 | catchpoints. */ | |
ce78b96d | 7887 | |
77b06cd7 TJB |
7888 | static int |
7889 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7890 | { |
dfd4cc63 | 7891 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7892 | } |
7893 | ||
4a64f543 MS |
7894 | /* Implement the "remove" breakpoint_ops method for vfork |
7895 | catchpoints. */ | |
ce78b96d JB |
7896 | |
7897 | static int | |
73971819 | 7898 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7899 | { |
dfd4cc63 | 7900 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7901 | } |
7902 | ||
7903 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7904 | catchpoints. */ | |
7905 | ||
7906 | static int | |
f1310107 | 7907 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7908 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7909 | const struct target_waitstatus *ws) |
ce78b96d | 7910 | { |
e29a4733 PA |
7911 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7912 | ||
f90263c1 TT |
7913 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7914 | return 0; | |
7915 | ||
7916 | c->forked_inferior_pid = ws->value.related_pid; | |
7917 | return 1; | |
ce78b96d JB |
7918 | } |
7919 | ||
4a64f543 MS |
7920 | /* Implement the "print_it" breakpoint_ops method for vfork |
7921 | catchpoints. */ | |
ce78b96d JB |
7922 | |
7923 | static enum print_stop_action | |
348d480f | 7924 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7925 | { |
36dfb11c | 7926 | struct ui_out *uiout = current_uiout; |
348d480f | 7927 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7928 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7929 | ||
ce78b96d | 7930 | annotate_catchpoint (b->number); |
f303dbd6 | 7931 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7932 | if (b->disposition == disp_del) |
112e8700 | 7933 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7934 | else |
112e8700 SM |
7935 | uiout->text ("Catchpoint "); |
7936 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7937 | { |
112e8700 SM |
7938 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7939 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7940 | } |
112e8700 SM |
7941 | uiout->field_int ("bkptno", b->number); |
7942 | uiout->text (" (vforked process "); | |
7943 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7944 | uiout->text ("), "); | |
ce78b96d JB |
7945 | return PRINT_SRC_AND_LOC; |
7946 | } | |
7947 | ||
4a64f543 MS |
7948 | /* Implement the "print_one" breakpoint_ops method for vfork |
7949 | catchpoints. */ | |
ce78b96d JB |
7950 | |
7951 | static void | |
a6d9a66e | 7952 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7953 | { |
e29a4733 | 7954 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7955 | struct value_print_options opts; |
79a45e25 | 7956 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7957 | |
7958 | get_user_print_options (&opts); | |
4a64f543 MS |
7959 | /* Field 4, the address, is omitted (which makes the columns not |
7960 | line up too nicely with the headers, but the effect is relatively | |
7961 | readable). */ | |
79a45b7d | 7962 | if (opts.addressprint) |
112e8700 | 7963 | uiout->field_skip ("addr"); |
ce78b96d | 7964 | annotate_field (5); |
112e8700 | 7965 | uiout->text ("vfork"); |
e29a4733 | 7966 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7967 | { |
112e8700 SM |
7968 | uiout->text (", process "); |
7969 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7970 | uiout->spaces (1); | |
ce78b96d | 7971 | } |
8ac3646f | 7972 | |
112e8700 SM |
7973 | if (uiout->is_mi_like_p ()) |
7974 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7975 | } |
7976 | ||
7977 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7978 | catchpoints. */ | |
7979 | ||
7980 | static void | |
7981 | print_mention_catch_vfork (struct breakpoint *b) | |
7982 | { | |
7983 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7984 | } | |
7985 | ||
6149aea9 PA |
7986 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7987 | catchpoints. */ | |
7988 | ||
7989 | static void | |
7990 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7991 | { | |
7992 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7993 | print_recreate_thread (b, fp); |
6149aea9 PA |
7994 | } |
7995 | ||
ce78b96d JB |
7996 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7997 | ||
2060206e | 7998 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7999 | |
edcc5120 | 8000 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 8001 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
8002 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
8003 | ||
c1fc2657 | 8004 | struct solib_catchpoint : public breakpoint |
edcc5120 | 8005 | { |
c1fc2657 | 8006 | ~solib_catchpoint () override; |
edcc5120 TT |
8007 | |
8008 | /* True for "catch load", false for "catch unload". */ | |
8009 | unsigned char is_load; | |
8010 | ||
8011 | /* Regular expression to match, if any. COMPILED is only valid when | |
8012 | REGEX is non-NULL. */ | |
8013 | char *regex; | |
2d7cc5c7 | 8014 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8015 | }; |
8016 | ||
c1fc2657 | 8017 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8018 | { |
c1fc2657 | 8019 | xfree (this->regex); |
edcc5120 TT |
8020 | } |
8021 | ||
8022 | static int | |
8023 | insert_catch_solib (struct bp_location *ignore) | |
8024 | { | |
8025 | return 0; | |
8026 | } | |
8027 | ||
8028 | static int | |
73971819 | 8029 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8030 | { |
8031 | return 0; | |
8032 | } | |
8033 | ||
8034 | static int | |
8035 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8036 | const address_space *aspace, |
edcc5120 TT |
8037 | CORE_ADDR bp_addr, |
8038 | const struct target_waitstatus *ws) | |
8039 | { | |
8040 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8041 | struct breakpoint *other; | |
8042 | ||
8043 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8044 | return 1; | |
8045 | ||
8046 | ALL_BREAKPOINTS (other) | |
8047 | { | |
8048 | struct bp_location *other_bl; | |
8049 | ||
8050 | if (other == bl->owner) | |
8051 | continue; | |
8052 | ||
8053 | if (other->type != bp_shlib_event) | |
8054 | continue; | |
8055 | ||
c1fc2657 | 8056 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8057 | continue; |
8058 | ||
8059 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8060 | { | |
8061 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8062 | return 1; | |
8063 | } | |
8064 | } | |
8065 | ||
8066 | return 0; | |
8067 | } | |
8068 | ||
8069 | static void | |
8070 | check_status_catch_solib (struct bpstats *bs) | |
8071 | { | |
8072 | struct solib_catchpoint *self | |
8073 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8074 | int ix; | |
8075 | ||
8076 | if (self->is_load) | |
8077 | { | |
8078 | struct so_list *iter; | |
8079 | ||
8080 | for (ix = 0; | |
8081 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8082 | ix, iter); | |
8083 | ++ix) | |
8084 | { | |
8085 | if (!self->regex | |
2d7cc5c7 | 8086 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8087 | return; |
8088 | } | |
8089 | } | |
8090 | else | |
8091 | { | |
8092 | char *iter; | |
8093 | ||
8094 | for (ix = 0; | |
8095 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8096 | ix, iter); | |
8097 | ++ix) | |
8098 | { | |
8099 | if (!self->regex | |
2d7cc5c7 | 8100 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8101 | return; |
8102 | } | |
8103 | } | |
8104 | ||
8105 | bs->stop = 0; | |
8106 | bs->print_it = print_it_noop; | |
8107 | } | |
8108 | ||
8109 | static enum print_stop_action | |
8110 | print_it_catch_solib (bpstat bs) | |
8111 | { | |
8112 | struct breakpoint *b = bs->breakpoint_at; | |
8113 | struct ui_out *uiout = current_uiout; | |
8114 | ||
8115 | annotate_catchpoint (b->number); | |
f303dbd6 | 8116 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8117 | if (b->disposition == disp_del) |
112e8700 | 8118 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8119 | else |
112e8700 SM |
8120 | uiout->text ("Catchpoint "); |
8121 | uiout->field_int ("bkptno", b->number); | |
8122 | uiout->text ("\n"); | |
8123 | if (uiout->is_mi_like_p ()) | |
8124 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8125 | print_solib_event (1); |
8126 | return PRINT_SRC_AND_LOC; | |
8127 | } | |
8128 | ||
8129 | static void | |
8130 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8131 | { | |
8132 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8133 | struct value_print_options opts; | |
8134 | struct ui_out *uiout = current_uiout; | |
8135 | char *msg; | |
8136 | ||
8137 | get_user_print_options (&opts); | |
8138 | /* Field 4, the address, is omitted (which makes the columns not | |
8139 | line up too nicely with the headers, but the effect is relatively | |
8140 | readable). */ | |
8141 | if (opts.addressprint) | |
8142 | { | |
8143 | annotate_field (4); | |
112e8700 | 8144 | uiout->field_skip ("addr"); |
edcc5120 TT |
8145 | } |
8146 | ||
8147 | annotate_field (5); | |
8148 | if (self->is_load) | |
8149 | { | |
8150 | if (self->regex) | |
8151 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8152 | else | |
8153 | msg = xstrdup (_("load of library")); | |
8154 | } | |
8155 | else | |
8156 | { | |
8157 | if (self->regex) | |
8158 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8159 | else | |
8160 | msg = xstrdup (_("unload of library")); | |
8161 | } | |
112e8700 | 8162 | uiout->field_string ("what", msg); |
edcc5120 | 8163 | xfree (msg); |
8ac3646f | 8164 | |
112e8700 SM |
8165 | if (uiout->is_mi_like_p ()) |
8166 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8167 | } |
8168 | ||
8169 | static void | |
8170 | print_mention_catch_solib (struct breakpoint *b) | |
8171 | { | |
8172 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8173 | ||
8174 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8175 | self->is_load ? "load" : "unload"); | |
8176 | } | |
8177 | ||
8178 | static void | |
8179 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8180 | { | |
8181 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8182 | ||
8183 | fprintf_unfiltered (fp, "%s %s", | |
8184 | b->disposition == disp_del ? "tcatch" : "catch", | |
8185 | self->is_load ? "load" : "unload"); | |
8186 | if (self->regex) | |
8187 | fprintf_unfiltered (fp, " %s", self->regex); | |
8188 | fprintf_unfiltered (fp, "\n"); | |
8189 | } | |
8190 | ||
8191 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8192 | ||
91985142 MG |
8193 | /* Shared helper function (MI and CLI) for creating and installing |
8194 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8195 | the events to be caught are load events, otherwise they are | |
8196 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8197 | temporary one. If ENABLED is non-zero the catchpoint is | |
8198 | created in an enabled state. */ | |
edcc5120 | 8199 | |
91985142 | 8200 | void |
a121b7c1 | 8201 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8202 | { |
edcc5120 | 8203 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8204 | |
edcc5120 TT |
8205 | if (!arg) |
8206 | arg = ""; | |
f1735a53 | 8207 | arg = skip_spaces (arg); |
edcc5120 | 8208 | |
36bd8eaa | 8209 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8210 | |
8211 | if (*arg != '\0') | |
8212 | { | |
2d7cc5c7 PA |
8213 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8214 | _("Invalid regexp"))); | |
edcc5120 TT |
8215 | c->regex = xstrdup (arg); |
8216 | } | |
8217 | ||
8218 | c->is_load = is_load; | |
36bd8eaa | 8219 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8220 | &catch_solib_breakpoint_ops); |
8221 | ||
c1fc2657 | 8222 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8223 | |
b270e6f9 | 8224 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8225 | } |
8226 | ||
91985142 MG |
8227 | /* A helper function that does all the work for "catch load" and |
8228 | "catch unload". */ | |
8229 | ||
8230 | static void | |
8231 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8232 | struct cmd_list_element *command) | |
8233 | { | |
8234 | int tempflag; | |
8235 | const int enabled = 1; | |
8236 | ||
8237 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8238 | ||
8239 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8240 | } | |
8241 | ||
edcc5120 TT |
8242 | static void |
8243 | catch_load_command_1 (char *arg, int from_tty, | |
8244 | struct cmd_list_element *command) | |
8245 | { | |
8246 | catch_load_or_unload (arg, from_tty, 1, command); | |
8247 | } | |
8248 | ||
8249 | static void | |
8250 | catch_unload_command_1 (char *arg, int from_tty, | |
8251 | struct cmd_list_element *command) | |
8252 | { | |
8253 | catch_load_or_unload (arg, from_tty, 0, command); | |
8254 | } | |
8255 | ||
346774a9 PA |
8256 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8257 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8258 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8259 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8260 | |
ab04a2af | 8261 | void |
346774a9 PA |
8262 | init_catchpoint (struct breakpoint *b, |
8263 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8264 | const char *cond_string, |
c0a91b2b | 8265 | const struct breakpoint_ops *ops) |
c906108c | 8266 | { |
51abb421 | 8267 | symtab_and_line sal; |
6c95b8df | 8268 | sal.pspace = current_program_space; |
c5aa993b | 8269 | |
28010a5d | 8270 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8271 | |
1b36a34b | 8272 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8273 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8274 | } |
8275 | ||
28010a5d | 8276 | void |
b270e6f9 | 8277 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8278 | { |
b270e6f9 | 8279 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8280 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8281 | if (is_tracepoint (b)) |
8282 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8283 | if (!internal) |
8284 | mention (b); | |
c56053d2 | 8285 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8286 | |
8287 | if (update_gll) | |
44702360 | 8288 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8289 | } |
8290 | ||
9b70b993 | 8291 | static void |
a6d9a66e | 8292 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8293 | int tempflag, const char *cond_string, |
c0a91b2b | 8294 | const struct breakpoint_ops *ops) |
c906108c | 8295 | { |
b270e6f9 | 8296 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8297 | |
b270e6f9 | 8298 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8299 | |
8300 | c->forked_inferior_pid = null_ptid; | |
8301 | ||
b270e6f9 | 8302 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8303 | } |
8304 | ||
fe798b75 JB |
8305 | /* Exec catchpoints. */ |
8306 | ||
b4d90040 | 8307 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8308 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8309 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8310 | ||
c1fc2657 | 8311 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8312 | { |
c1fc2657 | 8313 | ~exec_catchpoint () override; |
b4d90040 PA |
8314 | |
8315 | /* Filename of a program whose exec triggered this catchpoint. | |
8316 | This field is only valid immediately after this catchpoint has | |
8317 | triggered. */ | |
8318 | char *exec_pathname; | |
8319 | }; | |
8320 | ||
c1fc2657 | 8321 | /* Exec catchpoint destructor. */ |
b4d90040 | 8322 | |
c1fc2657 | 8323 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8324 | { |
c1fc2657 | 8325 | xfree (this->exec_pathname); |
b4d90040 PA |
8326 | } |
8327 | ||
77b06cd7 TJB |
8328 | static int |
8329 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8330 | { |
dfd4cc63 | 8331 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8332 | } |
c906108c | 8333 | |
fe798b75 | 8334 | static int |
73971819 | 8335 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8336 | { |
dfd4cc63 | 8337 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8338 | } |
c906108c | 8339 | |
fe798b75 | 8340 | static int |
f1310107 | 8341 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8342 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8343 | const struct target_waitstatus *ws) |
fe798b75 | 8344 | { |
b4d90040 PA |
8345 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8346 | ||
f90263c1 TT |
8347 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8348 | return 0; | |
8349 | ||
8350 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8351 | return 1; | |
fe798b75 | 8352 | } |
c906108c | 8353 | |
fe798b75 | 8354 | static enum print_stop_action |
348d480f | 8355 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8356 | { |
36dfb11c | 8357 | struct ui_out *uiout = current_uiout; |
348d480f | 8358 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8359 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8360 | ||
fe798b75 | 8361 | annotate_catchpoint (b->number); |
f303dbd6 | 8362 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8363 | if (b->disposition == disp_del) |
112e8700 | 8364 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8365 | else |
112e8700 SM |
8366 | uiout->text ("Catchpoint "); |
8367 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8368 | { |
112e8700 SM |
8369 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8370 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8371 | } |
112e8700 SM |
8372 | uiout->field_int ("bkptno", b->number); |
8373 | uiout->text (" (exec'd "); | |
8374 | uiout->field_string ("new-exec", c->exec_pathname); | |
8375 | uiout->text ("), "); | |
36dfb11c | 8376 | |
fe798b75 | 8377 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8378 | } |
8379 | ||
fe798b75 | 8380 | static void |
a6d9a66e | 8381 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8382 | { |
b4d90040 | 8383 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8384 | struct value_print_options opts; |
79a45e25 | 8385 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8386 | |
8387 | get_user_print_options (&opts); | |
8388 | ||
8389 | /* Field 4, the address, is omitted (which makes the columns | |
8390 | not line up too nicely with the headers, but the effect | |
8391 | is relatively readable). */ | |
8392 | if (opts.addressprint) | |
112e8700 | 8393 | uiout->field_skip ("addr"); |
fe798b75 | 8394 | annotate_field (5); |
112e8700 | 8395 | uiout->text ("exec"); |
b4d90040 | 8396 | if (c->exec_pathname != NULL) |
fe798b75 | 8397 | { |
112e8700 SM |
8398 | uiout->text (", program \""); |
8399 | uiout->field_string ("what", c->exec_pathname); | |
8400 | uiout->text ("\" "); | |
fe798b75 | 8401 | } |
8ac3646f | 8402 | |
112e8700 SM |
8403 | if (uiout->is_mi_like_p ()) |
8404 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8405 | } |
8406 | ||
8407 | static void | |
8408 | print_mention_catch_exec (struct breakpoint *b) | |
8409 | { | |
8410 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8411 | } | |
8412 | ||
6149aea9 PA |
8413 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8414 | catchpoints. */ | |
8415 | ||
8416 | static void | |
8417 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8418 | { | |
8419 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8420 | print_recreate_thread (b, fp); |
6149aea9 PA |
8421 | } |
8422 | ||
2060206e | 8423 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8424 | |
c906108c | 8425 | static int |
fba45db2 | 8426 | hw_breakpoint_used_count (void) |
c906108c | 8427 | { |
c906108c | 8428 | int i = 0; |
f1310107 TJB |
8429 | struct breakpoint *b; |
8430 | struct bp_location *bl; | |
c906108c SS |
8431 | |
8432 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8433 | { |
d6b74ac4 | 8434 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8435 | for (bl = b->loc; bl; bl = bl->next) |
8436 | { | |
8437 | /* Special types of hardware breakpoints may use more than | |
8438 | one register. */ | |
348d480f | 8439 | i += b->ops->resources_needed (bl); |
f1310107 | 8440 | } |
c5aa993b | 8441 | } |
c906108c SS |
8442 | |
8443 | return i; | |
8444 | } | |
8445 | ||
a1398e0c PA |
8446 | /* Returns the resources B would use if it were a hardware |
8447 | watchpoint. */ | |
8448 | ||
c906108c | 8449 | static int |
a1398e0c | 8450 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8451 | { |
c906108c | 8452 | int i = 0; |
e09342b5 | 8453 | struct bp_location *bl; |
c906108c | 8454 | |
a1398e0c PA |
8455 | if (!breakpoint_enabled (b)) |
8456 | return 0; | |
8457 | ||
8458 | for (bl = b->loc; bl; bl = bl->next) | |
8459 | { | |
8460 | /* Special types of hardware watchpoints may use more than | |
8461 | one register. */ | |
8462 | i += b->ops->resources_needed (bl); | |
8463 | } | |
8464 | ||
8465 | return i; | |
8466 | } | |
8467 | ||
8468 | /* Returns the sum the used resources of all hardware watchpoints of | |
8469 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8470 | the sum of the used resources of all hardware watchpoints of other | |
8471 | types _not_ TYPE. */ | |
8472 | ||
8473 | static int | |
8474 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8475 | enum bptype type, int *other_type_used) | |
8476 | { | |
8477 | int i = 0; | |
8478 | struct breakpoint *b; | |
8479 | ||
c906108c SS |
8480 | *other_type_used = 0; |
8481 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8482 | { |
a1398e0c PA |
8483 | if (b == except) |
8484 | continue; | |
e09342b5 TJB |
8485 | if (!breakpoint_enabled (b)) |
8486 | continue; | |
8487 | ||
a1398e0c PA |
8488 | if (b->type == type) |
8489 | i += hw_watchpoint_use_count (b); | |
8490 | else if (is_hardware_watchpoint (b)) | |
8491 | *other_type_used = 1; | |
e09342b5 TJB |
8492 | } |
8493 | ||
c906108c SS |
8494 | return i; |
8495 | } | |
8496 | ||
c906108c | 8497 | void |
fba45db2 | 8498 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8499 | { |
c5aa993b | 8500 | struct breakpoint *b; |
c906108c SS |
8501 | |
8502 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8503 | { |
cc60f2e3 | 8504 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8505 | { |
b5de0fa7 | 8506 | b->enable_state = bp_call_disabled; |
44702360 | 8507 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8508 | } |
8509 | } | |
c906108c SS |
8510 | } |
8511 | ||
8512 | void | |
fba45db2 | 8513 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8514 | { |
c5aa993b | 8515 | struct breakpoint *b; |
c906108c SS |
8516 | |
8517 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8518 | { |
cc60f2e3 | 8519 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8520 | { |
b5de0fa7 | 8521 | b->enable_state = bp_enabled; |
44702360 | 8522 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8523 | } |
8524 | } | |
c906108c SS |
8525 | } |
8526 | ||
8bea4e01 UW |
8527 | void |
8528 | disable_breakpoints_before_startup (void) | |
8529 | { | |
6c95b8df | 8530 | current_program_space->executing_startup = 1; |
44702360 | 8531 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8532 | } |
8533 | ||
8534 | void | |
8535 | enable_breakpoints_after_startup (void) | |
8536 | { | |
6c95b8df | 8537 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8538 | breakpoint_re_set (); |
8bea4e01 UW |
8539 | } |
8540 | ||
7c16b83e PA |
8541 | /* Create a new single-step breakpoint for thread THREAD, with no |
8542 | locations. */ | |
c906108c | 8543 | |
7c16b83e PA |
8544 | static struct breakpoint * |
8545 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8546 | { | |
b270e6f9 | 8547 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8548 | |
b270e6f9 | 8549 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8550 | &momentary_breakpoint_ops); |
8551 | ||
8552 | b->disposition = disp_donttouch; | |
8553 | b->frame_id = null_frame_id; | |
8554 | ||
8555 | b->thread = thread; | |
8556 | gdb_assert (b->thread != 0); | |
8557 | ||
b270e6f9 | 8558 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8559 | } |
8560 | ||
8561 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8562 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8563 | frame. */ | |
c906108c | 8564 | |
454dafbd | 8565 | breakpoint_up |
a6d9a66e UW |
8566 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8567 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8568 | { |
52f0bd74 | 8569 | struct breakpoint *b; |
edb3359d | 8570 | |
193facb3 JK |
8571 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8572 | tail-called one. */ | |
8573 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8574 | |
06edf0c0 | 8575 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8576 | b->enable_state = bp_enabled; |
8577 | b->disposition = disp_donttouch; | |
818dd999 | 8578 | b->frame_id = frame_id; |
c906108c | 8579 | |
4a64f543 MS |
8580 | /* If we're debugging a multi-threaded program, then we want |
8581 | momentary breakpoints to be active in only a single thread of | |
8582 | control. */ | |
39f77062 | 8583 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8584 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8585 | |
44702360 | 8586 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8587 | |
454dafbd | 8588 | return breakpoint_up (b); |
c906108c | 8589 | } |
611c83ae | 8590 | |
06edf0c0 | 8591 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8592 | The new breakpoint will have type TYPE, use OPS as its |
8593 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8594 | |
06edf0c0 PA |
8595 | static struct breakpoint * |
8596 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8597 | enum bptype type, | |
a1aa2221 LM |
8598 | const struct breakpoint_ops *ops, |
8599 | int loc_enabled) | |
e58b0e63 PA |
8600 | { |
8601 | struct breakpoint *copy; | |
8602 | ||
06edf0c0 | 8603 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8604 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8605 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8606 | |
a6d9a66e | 8607 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8608 | copy->loc->requested_address = orig->loc->requested_address; |
8609 | copy->loc->address = orig->loc->address; | |
8610 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8611 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8612 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8613 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8614 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8615 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8616 | copy->frame_id = orig->frame_id; |
8617 | copy->thread = orig->thread; | |
6c95b8df | 8618 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8619 | |
8620 | copy->enable_state = bp_enabled; | |
8621 | copy->disposition = disp_donttouch; | |
8622 | copy->number = internal_breakpoint_number--; | |
8623 | ||
44702360 | 8624 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8625 | return copy; |
8626 | } | |
8627 | ||
06edf0c0 PA |
8628 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8629 | ORIG is NULL. */ | |
8630 | ||
8631 | struct breakpoint * | |
8632 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8633 | { | |
8634 | /* If there's nothing to clone, then return nothing. */ | |
8635 | if (orig == NULL) | |
8636 | return NULL; | |
8637 | ||
a1aa2221 | 8638 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8639 | } |
8640 | ||
454dafbd | 8641 | breakpoint_up |
a6d9a66e UW |
8642 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8643 | enum bptype type) | |
611c83ae PA |
8644 | { |
8645 | struct symtab_and_line sal; | |
8646 | ||
8647 | sal = find_pc_line (pc, 0); | |
8648 | sal.pc = pc; | |
8649 | sal.section = find_pc_overlay (pc); | |
8650 | sal.explicit_pc = 1; | |
8651 | ||
a6d9a66e | 8652 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8653 | } |
c906108c | 8654 | \f |
c5aa993b | 8655 | |
c906108c SS |
8656 | /* Tell the user we have just set a breakpoint B. */ |
8657 | ||
8658 | static void | |
fba45db2 | 8659 | mention (struct breakpoint *b) |
c906108c | 8660 | { |
348d480f | 8661 | b->ops->print_mention (b); |
112e8700 | 8662 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8663 | return; |
c906108c SS |
8664 | printf_filtered ("\n"); |
8665 | } | |
c906108c | 8666 | \f |
c5aa993b | 8667 | |
1a853c52 PA |
8668 | static int bp_loc_is_permanent (struct bp_location *loc); |
8669 | ||
0d381245 | 8670 | static struct bp_location * |
39d61571 | 8671 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8672 | const struct symtab_and_line *sal) |
8673 | { | |
8674 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8675 | CORE_ADDR adjusted_address; |
8676 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8677 | ||
8678 | if (loc_gdbarch == NULL) | |
8679 | loc_gdbarch = b->gdbarch; | |
8680 | ||
8681 | /* Adjust the breakpoint's address prior to allocating a location. | |
8682 | Once we call allocate_bp_location(), that mostly uninitialized | |
8683 | location will be placed on the location chain. Adjustment of the | |
8684 | breakpoint may cause target_read_memory() to be called and we do | |
8685 | not want its scan of the location chain to find a breakpoint and | |
8686 | location that's only been partially initialized. */ | |
8687 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8688 | sal->pc, b->type); | |
0d381245 | 8689 | |
d30113d4 | 8690 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8691 | loc = allocate_bp_location (b); |
d30113d4 JK |
8692 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8693 | tmp = &((*tmp)->next)) | |
0d381245 | 8694 | ; |
d30113d4 | 8695 | loc->next = *tmp; |
0d381245 | 8696 | *tmp = loc; |
3742cc8b | 8697 | |
0d381245 | 8698 | loc->requested_address = sal->pc; |
3742cc8b | 8699 | loc->address = adjusted_address; |
6c95b8df | 8700 | loc->pspace = sal->pspace; |
729662a5 TT |
8701 | loc->probe.probe = sal->probe; |
8702 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8703 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8704 | loc->section = sal->section; |
3742cc8b | 8705 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8706 | loc->line_number = sal->line; |
2f202fde | 8707 | loc->symtab = sal->symtab; |
4a27f119 | 8708 | loc->symbol = sal->symbol; |
f8eba3c6 | 8709 | |
0e30163f JK |
8710 | set_breakpoint_location_function (loc, |
8711 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8712 | |
6ae88661 LM |
8713 | /* While by definition, permanent breakpoints are already present in the |
8714 | code, we don't mark the location as inserted. Normally one would expect | |
8715 | that GDB could rely on that breakpoint instruction to stop the program, | |
8716 | thus removing the need to insert its own breakpoint, except that executing | |
8717 | the breakpoint instruction can kill the target instead of reporting a | |
8718 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8719 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8720 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8721 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8722 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8723 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8724 | it manually increments the PC, thus avoiding executing the breakpoint | |
8725 | instruction.) */ | |
1a853c52 | 8726 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8727 | loc->permanent = 1; |
1a853c52 | 8728 | |
0d381245 VP |
8729 | return loc; |
8730 | } | |
514f746b AR |
8731 | \f |
8732 | ||
1cf4d951 | 8733 | /* See breakpoint.h. */ |
514f746b | 8734 | |
1cf4d951 PA |
8735 | int |
8736 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8737 | { |
8738 | int len; | |
8739 | CORE_ADDR addr; | |
1afeeb75 | 8740 | const gdb_byte *bpoint; |
514f746b AR |
8741 | gdb_byte *target_mem; |
8742 | ||
1cf4d951 PA |
8743 | addr = address; |
8744 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8745 | ||
8746 | /* Software breakpoints unsupported? */ | |
8747 | if (bpoint == NULL) | |
8748 | return 0; | |
8749 | ||
224c3ddb | 8750 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8751 | |
8752 | /* Enable the automatic memory restoration from breakpoints while | |
8753 | we read the memory. Otherwise we could say about our temporary | |
8754 | breakpoints they are permanent. */ | |
cb85b21b TT |
8755 | scoped_restore restore_memory |
8756 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8757 | |
8758 | if (target_read_memory (address, target_mem, len) == 0 | |
8759 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8760 | return 1; |
1cf4d951 | 8761 | |
cb85b21b | 8762 | return 0; |
1cf4d951 PA |
8763 | } |
8764 | ||
8765 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8766 | return 0 otherwise. */ | |
8767 | ||
8768 | static int | |
8769 | bp_loc_is_permanent (struct bp_location *loc) | |
8770 | { | |
514f746b AR |
8771 | gdb_assert (loc != NULL); |
8772 | ||
244558af LM |
8773 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8774 | attempt to read from the addresses the locations of these breakpoint types | |
8775 | point to. program_breakpoint_here_p, below, will attempt to read | |
8776 | memory. */ | |
8777 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8778 | return 0; | |
8779 | ||
5ed8105e | 8780 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8781 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8782 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8783 | } |
8784 | ||
e7e0cddf SS |
8785 | /* Build a command list for the dprintf corresponding to the current |
8786 | settings of the dprintf style options. */ | |
8787 | ||
8788 | static void | |
8789 | update_dprintf_command_list (struct breakpoint *b) | |
8790 | { | |
8791 | char *dprintf_args = b->extra_string; | |
8792 | char *printf_line = NULL; | |
8793 | ||
8794 | if (!dprintf_args) | |
8795 | return; | |
8796 | ||
8797 | dprintf_args = skip_spaces (dprintf_args); | |
8798 | ||
8799 | /* Allow a comma, as it may have terminated a location, but don't | |
8800 | insist on it. */ | |
8801 | if (*dprintf_args == ',') | |
8802 | ++dprintf_args; | |
8803 | dprintf_args = skip_spaces (dprintf_args); | |
8804 | ||
8805 | if (*dprintf_args != '"') | |
8806 | error (_("Bad format string, missing '\"'.")); | |
8807 | ||
d3ce09f5 | 8808 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8809 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8810 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8811 | { |
8812 | if (!dprintf_function) | |
8813 | error (_("No function supplied for dprintf call")); | |
8814 | ||
8815 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8816 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8817 | dprintf_function, | |
8818 | dprintf_channel, | |
8819 | dprintf_args); | |
8820 | else | |
8821 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8822 | dprintf_function, | |
8823 | dprintf_args); | |
8824 | } | |
d3ce09f5 SS |
8825 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8826 | { | |
8827 | if (target_can_run_breakpoint_commands ()) | |
8828 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8829 | else | |
8830 | { | |
8831 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8832 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8833 | } | |
8834 | } | |
e7e0cddf SS |
8835 | else |
8836 | internal_error (__FILE__, __LINE__, | |
8837 | _("Invalid dprintf style.")); | |
8838 | ||
f28045c2 | 8839 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8840 | /* Manufacture a printf sequence. */ |
f28045c2 | 8841 | { |
8d749320 | 8842 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8843 | |
f28045c2 YQ |
8844 | printf_cmd_line->control_type = simple_control; |
8845 | printf_cmd_line->body_count = 0; | |
8846 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8847 | printf_cmd_line->next = NULL; |
f28045c2 | 8848 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8849 | |
93921405 | 8850 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8851 | } |
e7e0cddf SS |
8852 | } |
8853 | ||
8854 | /* Update all dprintf commands, making their command lists reflect | |
8855 | current style settings. */ | |
8856 | ||
8857 | static void | |
8858 | update_dprintf_commands (char *args, int from_tty, | |
8859 | struct cmd_list_element *c) | |
8860 | { | |
8861 | struct breakpoint *b; | |
8862 | ||
8863 | ALL_BREAKPOINTS (b) | |
8864 | { | |
8865 | if (b->type == bp_dprintf) | |
8866 | update_dprintf_command_list (b); | |
8867 | } | |
8868 | } | |
c3f6f71d | 8869 | |
f00aae0f KS |
8870 | /* Create a breakpoint with SAL as location. Use LOCATION |
8871 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8872 | as condition expression. If LOCATION is NULL then create an |
8873 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8874 | |
8875 | static void | |
d9b3f62e | 8876 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8877 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8878 | event_location_up &&location, |
e1e01040 PA |
8879 | gdb::unique_xmalloc_ptr<char> filter, |
8880 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8881 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8882 | enum bptype type, enum bpdisp disposition, |
8883 | int thread, int task, int ignore_count, | |
c0a91b2b | 8884 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8885 | int enabled, int internal, unsigned flags, |
8886 | int display_canonical) | |
018d34a4 | 8887 | { |
0d381245 | 8888 | int i; |
018d34a4 VP |
8889 | |
8890 | if (type == bp_hardware_breakpoint) | |
8891 | { | |
fbbd034e AS |
8892 | int target_resources_ok; |
8893 | ||
8894 | i = hw_breakpoint_used_count (); | |
8895 | target_resources_ok = | |
8896 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8897 | i + 1, 0); |
8898 | if (target_resources_ok == 0) | |
8899 | error (_("No hardware breakpoint support in the target.")); | |
8900 | else if (target_resources_ok < 0) | |
8901 | error (_("Hardware breakpoints used exceeds limit.")); | |
8902 | } | |
8903 | ||
6c5b2ebe | 8904 | gdb_assert (!sals.empty ()); |
6c95b8df | 8905 | |
6c5b2ebe | 8906 | for (const auto &sal : sals) |
0d381245 | 8907 | { |
0d381245 VP |
8908 | struct bp_location *loc; |
8909 | ||
8910 | if (from_tty) | |
5af949e3 UW |
8911 | { |
8912 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8913 | if (!loc_gdbarch) | |
8914 | loc_gdbarch = gdbarch; | |
8915 | ||
8916 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8917 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8918 | } |
0d381245 | 8919 | |
6c5b2ebe | 8920 | if (&sal == &sals[0]) |
0d381245 | 8921 | { |
d9b3f62e | 8922 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8923 | b->thread = thread; |
4a306c9a | 8924 | b->task = task; |
855a6e68 | 8925 | |
e1e01040 PA |
8926 | b->cond_string = cond_string.release (); |
8927 | b->extra_string = extra_string.release (); | |
0d381245 | 8928 | b->ignore_count = ignore_count; |
41447f92 | 8929 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8930 | b->disposition = disposition; |
6c95b8df | 8931 | |
44f238bb PA |
8932 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8933 | b->loc->inserted = 1; | |
8934 | ||
0fb4aa4b PA |
8935 | if (type == bp_static_tracepoint) |
8936 | { | |
d9b3f62e | 8937 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8938 | struct static_tracepoint_marker marker; |
8939 | ||
983af33b | 8940 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8941 | { |
8942 | /* We already know the marker exists, otherwise, we | |
8943 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8944 | const char *p |
8945 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8946 | const char *endp; |
0fb4aa4b | 8947 | char *marker_str; |
0fb4aa4b | 8948 | |
f1735a53 | 8949 | p = skip_spaces (p); |
0fb4aa4b | 8950 | |
f1735a53 | 8951 | endp = skip_to_space (p); |
0fb4aa4b PA |
8952 | |
8953 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8954 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8955 | |
3e43a32a MS |
8956 | printf_filtered (_("Probed static tracepoint " |
8957 | "marker \"%s\"\n"), | |
d9b3f62e | 8958 | t->static_trace_marker_id); |
0fb4aa4b PA |
8959 | } |
8960 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8961 | { | |
d9b3f62e | 8962 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8963 | release_static_tracepoint_marker (&marker); |
8964 | ||
3e43a32a MS |
8965 | printf_filtered (_("Probed static tracepoint " |
8966 | "marker \"%s\"\n"), | |
d9b3f62e | 8967 | t->static_trace_marker_id); |
0fb4aa4b PA |
8968 | } |
8969 | else | |
3e43a32a MS |
8970 | warning (_("Couldn't determine the static " |
8971 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8972 | } |
8973 | ||
0d381245 VP |
8974 | loc = b->loc; |
8975 | } | |
8976 | else | |
018d34a4 | 8977 | { |
39d61571 | 8978 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8979 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8980 | loc->inserted = 1; | |
0d381245 VP |
8981 | } |
8982 | ||
8983 | if (b->cond_string) | |
8984 | { | |
bbc13ae3 KS |
8985 | const char *arg = b->cond_string; |
8986 | ||
1bb9788d TT |
8987 | loc->cond = parse_exp_1 (&arg, loc->address, |
8988 | block_for_pc (loc->address), 0); | |
0d381245 | 8989 | if (*arg) |
588ae58c | 8990 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8991 | } |
e7e0cddf SS |
8992 | |
8993 | /* Dynamic printf requires and uses additional arguments on the | |
8994 | command line, otherwise it's an error. */ | |
8995 | if (type == bp_dprintf) | |
8996 | { | |
8997 | if (b->extra_string) | |
8998 | update_dprintf_command_list (b); | |
8999 | else | |
9000 | error (_("Format string required")); | |
9001 | } | |
9002 | else if (b->extra_string) | |
588ae58c | 9003 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9004 | } |
018d34a4 | 9005 | |
56435ebe | 9006 | b->display_canonical = display_canonical; |
f00aae0f | 9007 | if (location != NULL) |
d28cd78a | 9008 | b->location = std::move (location); |
018d34a4 | 9009 | else |
d28cd78a | 9010 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 9011 | b->filter = filter.release (); |
d9b3f62e | 9012 | } |
018d34a4 | 9013 | |
d9b3f62e PA |
9014 | static void |
9015 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 9016 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9017 | event_location_up &&location, |
e1e01040 PA |
9018 | gdb::unique_xmalloc_ptr<char> filter, |
9019 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9020 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9021 | enum bptype type, enum bpdisp disposition, |
9022 | int thread, int task, int ignore_count, | |
c0a91b2b | 9023 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9024 | int enabled, int internal, unsigned flags, |
9025 | int display_canonical) | |
d9b3f62e | 9026 | { |
a5e364af | 9027 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9028 | |
a5e364af | 9029 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9030 | sals, std::move (location), |
e1e01040 PA |
9031 | std::move (filter), |
9032 | std::move (cond_string), | |
9033 | std::move (extra_string), | |
d9b3f62e PA |
9034 | type, disposition, |
9035 | thread, task, ignore_count, | |
9036 | ops, from_tty, | |
44f238bb PA |
9037 | enabled, internal, flags, |
9038 | display_canonical); | |
d9b3f62e | 9039 | |
b270e6f9 | 9040 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9041 | } |
9042 | ||
9043 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9044 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9045 | value. COND_STRING, if not NULL, specified the condition to be | |
9046 | used for all breakpoints. Essentially the only case where | |
9047 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9048 | function. In that case, it's still not possible to specify | |
9049 | separate conditions for different overloaded functions, so | |
9050 | we take just a single condition string. | |
9051 | ||
c3f6f71d | 9052 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9053 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9054 | array contents). If the function fails (error() is called), the |
9055 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9056 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9057 | |
9058 | static void | |
8cdf0e15 | 9059 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9060 | struct linespec_result *canonical, |
e1e01040 PA |
9061 | gdb::unique_xmalloc_ptr<char> cond_string, |
9062 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9063 | enum bptype type, enum bpdisp disposition, |
9064 | int thread, int task, int ignore_count, | |
c0a91b2b | 9065 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9066 | int enabled, int internal, unsigned flags) |
c906108c | 9067 | { |
f8eba3c6 | 9068 | if (canonical->pre_expanded) |
6c5b2ebe | 9069 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9070 | |
6c5b2ebe | 9071 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9072 | { |
f00aae0f | 9073 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9074 | 'break', without arguments. */ |
ffc2605c | 9075 | event_location_up location |
f00aae0f | 9076 | = (canonical->location != NULL |
8e9e35b1 | 9077 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9078 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9079 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9080 | |
6c5b2ebe | 9081 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9082 | std::move (location), |
e1e01040 PA |
9083 | std::move (filter_string), |
9084 | std::move (cond_string), | |
9085 | std::move (extra_string), | |
e7e0cddf | 9086 | type, disposition, |
84f4c1fe | 9087 | thread, task, ignore_count, ops, |
44f238bb | 9088 | from_tty, enabled, internal, flags, |
56435ebe | 9089 | canonical->special_display); |
c3f6f71d | 9090 | } |
c3f6f71d | 9091 | } |
c906108c | 9092 | |
f00aae0f | 9093 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9094 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9095 | addresses found. LOCATION points to the end of the SAL (for |
9096 | linespec locations). | |
9998af43 TJB |
9097 | |
9098 | The array and the line spec strings are allocated on the heap, it is | |
9099 | the caller's responsibility to free them. */ | |
c906108c | 9100 | |
b9362cc7 | 9101 | static void |
f00aae0f | 9102 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9103 | struct linespec_result *canonical) |
c3f6f71d | 9104 | { |
f00aae0f KS |
9105 | struct symtab_and_line cursal; |
9106 | ||
9107 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9108 | { | |
9109 | const char *address = get_linespec_location (location); | |
9110 | ||
9111 | if (address == NULL) | |
9112 | { | |
9113 | /* The last displayed codepoint, if it's valid, is our default | |
9114 | breakpoint address. */ | |
9115 | if (last_displayed_sal_is_valid ()) | |
9116 | { | |
f00aae0f KS |
9117 | /* Set sal's pspace, pc, symtab, and line to the values |
9118 | corresponding to the last call to print_frame_info. | |
9119 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9120 | as the breakpoint line number is inappropriate otherwise. | |
9121 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9122 | symtab_and_line sal = get_last_displayed_sal (); |
9123 | CORE_ADDR pc = sal.pc; | |
9124 | ||
f00aae0f KS |
9125 | sal = find_pc_line (pc, 0); |
9126 | ||
9127 | /* "break" without arguments is equivalent to "break *PC" | |
9128 | where PC is the last displayed codepoint's address. So | |
9129 | make sure to set sal.explicit_pc to prevent GDB from | |
9130 | trying to expand the list of sals to include all other | |
9131 | instances with the same symtab and line. */ | |
9132 | sal.pc = pc; | |
9133 | sal.explicit_pc = 1; | |
9134 | ||
6c5b2ebe PA |
9135 | struct linespec_sals lsal; |
9136 | lsal.sals = {sal}; | |
f00aae0f KS |
9137 | lsal.canonical = NULL; |
9138 | ||
6c5b2ebe | 9139 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9140 | return; |
9141 | } | |
9142 | else | |
9143 | error (_("No default breakpoint address now.")); | |
c906108c | 9144 | } |
c906108c | 9145 | } |
f00aae0f KS |
9146 | |
9147 | /* Force almost all breakpoints to be in terms of the | |
9148 | current_source_symtab (which is decode_line_1's default). | |
9149 | This should produce the results we want almost all of the | |
9150 | time while leaving default_breakpoint_* alone. | |
9151 | ||
9152 | ObjC: However, don't match an Objective-C method name which | |
9153 | may have a '+' or '-' succeeded by a '['. */ | |
9154 | cursal = get_current_source_symtab_and_line (); | |
9155 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9156 | { |
f00aae0f | 9157 | const char *address = NULL; |
cc80f267 | 9158 | |
f00aae0f KS |
9159 | if (event_location_type (location) == LINESPEC_LOCATION) |
9160 | address = get_linespec_location (location); | |
cc80f267 | 9161 | |
f00aae0f KS |
9162 | if (!cursal.symtab |
9163 | || (address != NULL | |
9164 | && strchr ("+-", address[0]) != NULL | |
9165 | && address[1] != '[')) | |
9166 | { | |
c2f4122d | 9167 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9168 | get_last_displayed_symtab (), |
9169 | get_last_displayed_line (), | |
9170 | canonical, NULL, NULL); | |
9171 | return; | |
9172 | } | |
c906108c | 9173 | } |
f00aae0f | 9174 | |
c2f4122d | 9175 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9176 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9177 | } |
c906108c | 9178 | |
c906108c | 9179 | |
c3f6f71d | 9180 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9181 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9182 | |
b9362cc7 | 9183 | static void |
6c5b2ebe | 9184 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9185 | { |
6c5b2ebe PA |
9186 | for (auto &sal : sals) |
9187 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9188 | } |
9189 | ||
7a697b8d SS |
9190 | /* Fast tracepoints may have restrictions on valid locations. For |
9191 | instance, a fast tracepoint using a jump instead of a trap will | |
9192 | likely have to overwrite more bytes than a trap would, and so can | |
9193 | only be placed where the instruction is longer than the jump, or a | |
9194 | multi-instruction sequence does not have a jump into the middle of | |
9195 | it, etc. */ | |
9196 | ||
9197 | static void | |
9198 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9199 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9200 | { |
6c5b2ebe | 9201 | int rslt; |
7a697b8d SS |
9202 | char *msg; |
9203 | struct cleanup *old_chain; | |
9204 | ||
6c5b2ebe | 9205 | for (const auto &sal : sals) |
7a697b8d | 9206 | { |
f8eba3c6 TT |
9207 | struct gdbarch *sarch; |
9208 | ||
6c5b2ebe | 9209 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9210 | /* We fall back to GDBARCH if there is no architecture |
9211 | associated with SAL. */ | |
9212 | if (sarch == NULL) | |
9213 | sarch = gdbarch; | |
6c5b2ebe | 9214 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9215 | old_chain = make_cleanup (xfree, msg); |
9216 | ||
9217 | if (!rslt) | |
53c3572a | 9218 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9219 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9220 | |
9221 | do_cleanups (old_chain); | |
9222 | } | |
9223 | } | |
9224 | ||
018d34a4 VP |
9225 | /* Given TOK, a string specification of condition and thread, as |
9226 | accepted by the 'break' command, extract the condition | |
9227 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9228 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9229 | If no condition is found, *COND_STRING is set to NULL. |
9230 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9231 | |
9232 | static void | |
bbc13ae3 | 9233 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9234 | char **cond_string, int *thread, int *task, |
9235 | char **rest) | |
018d34a4 VP |
9236 | { |
9237 | *cond_string = NULL; | |
9238 | *thread = -1; | |
ed1d1739 KS |
9239 | *task = 0; |
9240 | *rest = NULL; | |
9241 | ||
018d34a4 VP |
9242 | while (tok && *tok) |
9243 | { | |
bbc13ae3 | 9244 | const char *end_tok; |
018d34a4 | 9245 | int toklen; |
bbc13ae3 KS |
9246 | const char *cond_start = NULL; |
9247 | const char *cond_end = NULL; | |
cc59ec59 | 9248 | |
f1735a53 | 9249 | tok = skip_spaces (tok); |
e7e0cddf SS |
9250 | |
9251 | if ((*tok == '"' || *tok == ',') && rest) | |
9252 | { | |
9253 | *rest = savestring (tok, strlen (tok)); | |
9254 | return; | |
9255 | } | |
9256 | ||
f1735a53 | 9257 | end_tok = skip_to_space (tok); |
d634f2de | 9258 | |
018d34a4 | 9259 | toklen = end_tok - tok; |
d634f2de | 9260 | |
018d34a4 VP |
9261 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9262 | { | |
9263 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9264 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9265 | cond_end = tok; |
d634f2de | 9266 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9267 | } |
9268 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9269 | { | |
5d5658a1 PA |
9270 | const char *tmptok; |
9271 | struct thread_info *thr; | |
d634f2de | 9272 | |
018d34a4 | 9273 | tok = end_tok + 1; |
5d5658a1 | 9274 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9275 | if (tok == tmptok) |
9276 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9277 | *thread = thr->global_num; |
bbc13ae3 | 9278 | tok = tmptok; |
018d34a4 | 9279 | } |
4a306c9a JB |
9280 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9281 | { | |
9282 | char *tmptok; | |
9283 | ||
9284 | tok = end_tok + 1; | |
bbc13ae3 | 9285 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9286 | if (tok == tmptok) |
9287 | error (_("Junk after task keyword.")); | |
9288 | if (!valid_task_id (*task)) | |
b6199126 | 9289 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9290 | tok = tmptok; |
4a306c9a | 9291 | } |
e7e0cddf SS |
9292 | else if (rest) |
9293 | { | |
9294 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9295 | return; |
e7e0cddf | 9296 | } |
018d34a4 VP |
9297 | else |
9298 | error (_("Junk at end of arguments.")); | |
9299 | } | |
9300 | } | |
9301 | ||
0fb4aa4b PA |
9302 | /* Decode a static tracepoint marker spec. */ |
9303 | ||
6c5b2ebe | 9304 | static std::vector<symtab_and_line> |
f00aae0f | 9305 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9306 | { |
9307 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
f00aae0f KS |
9308 | const char *p = &(*arg_p)[3]; |
9309 | const char *endp; | |
0fb4aa4b PA |
9310 | int i; |
9311 | ||
f1735a53 | 9312 | p = skip_spaces (p); |
0fb4aa4b | 9313 | |
f1735a53 | 9314 | endp = skip_to_space (p); |
0fb4aa4b | 9315 | |
81b1e71c | 9316 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9317 | |
81b1e71c | 9318 | markers = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); |
0fb4aa4b | 9319 | if (VEC_empty(static_tracepoint_marker_p, markers)) |
81b1e71c TT |
9320 | error (_("No known static tracepoint marker named %s"), |
9321 | marker_str.c_str ()); | |
0fb4aa4b | 9322 | |
6c5b2ebe PA |
9323 | std::vector<symtab_and_line> sals; |
9324 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9325 | |
6c5b2ebe | 9326 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9327 | { |
9328 | struct static_tracepoint_marker *marker; | |
9329 | ||
9330 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9331 | ||
51abb421 | 9332 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9333 | sal.pc = marker->address; |
9334 | sals.push_back (sal); | |
0fb4aa4b PA |
9335 | |
9336 | release_static_tracepoint_marker (marker); | |
9337 | } | |
9338 | ||
0fb4aa4b PA |
9339 | *arg_p = endp; |
9340 | return sals; | |
9341 | } | |
9342 | ||
f00aae0f | 9343 | /* See breakpoint.h. */ |
0101ce28 | 9344 | |
8cdf0e15 VP |
9345 | int |
9346 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9347 | const struct event_location *location, |
9348 | const char *cond_string, | |
9349 | int thread, const char *extra_string, | |
f00aae0f | 9350 | int parse_extra, |
0fb4aa4b | 9351 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9352 | int ignore_count, |
9353 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9354 | const struct breakpoint_ops *ops, |
44f238bb PA |
9355 | int from_tty, int enabled, int internal, |
9356 | unsigned flags) | |
c3f6f71d | 9357 | { |
7efd8fc2 | 9358 | struct linespec_result canonical; |
80c99de1 | 9359 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9360 | int pending = 0; |
4a306c9a | 9361 | int task = 0; |
86b17b60 | 9362 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9363 | |
348d480f PA |
9364 | gdb_assert (ops != NULL); |
9365 | ||
f00aae0f KS |
9366 | /* If extra_string isn't useful, set it to NULL. */ |
9367 | if (extra_string != NULL && *extra_string == '\0') | |
9368 | extra_string = NULL; | |
9369 | ||
492d29ea | 9370 | TRY |
b78a6381 | 9371 | { |
f00aae0f | 9372 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9373 | } |
492d29ea | 9374 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9375 | { |
492d29ea PA |
9376 | /* If caller is interested in rc value from parse, set |
9377 | value. */ | |
9378 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9379 | { |
05ff989b AC |
9380 | /* If pending breakpoint support is turned off, throw |
9381 | error. */ | |
fa8d40ab JJ |
9382 | |
9383 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9384 | throw_exception (e); |
9385 | ||
9386 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9387 | |
05ff989b AC |
9388 | /* If pending breakpoint support is auto query and the user |
9389 | selects no, then simply return the error code. */ | |
059fb39f | 9390 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9391 | && !nquery (_("Make %s pending on future shared library load? "), |
9392 | bptype_string (type_wanted))) | |
fd9b8c24 | 9393 | return 0; |
fa8d40ab | 9394 | |
05ff989b AC |
9395 | /* At this point, either the user was queried about setting |
9396 | a pending breakpoint and selected yes, or pending | |
9397 | breakpoint behavior is on and thus a pending breakpoint | |
9398 | is defaulted on behalf of the user. */ | |
f00aae0f | 9399 | pending = 1; |
0101ce28 | 9400 | } |
492d29ea PA |
9401 | else |
9402 | throw_exception (e); | |
0101ce28 | 9403 | } |
492d29ea PA |
9404 | END_CATCH |
9405 | ||
6c5b2ebe | 9406 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9407 | return 0; |
c3f6f71d | 9408 | |
c3f6f71d JM |
9409 | /* ----------------------------- SNIP ----------------------------- |
9410 | Anything added to the cleanup chain beyond this point is assumed | |
9411 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9412 | then the memory is not reclaimed. */ |
9413 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9414 | |
c3f6f71d JM |
9415 | /* Resolve all line numbers to PC's and verify that the addresses |
9416 | are ok for the target. */ | |
0101ce28 | 9417 | if (!pending) |
f8eba3c6 | 9418 | { |
6c5b2ebe PA |
9419 | for (auto &lsal : canonical.lsals) |
9420 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9421 | } |
c3f6f71d | 9422 | |
7a697b8d | 9423 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9424 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9425 | { |
6c5b2ebe PA |
9426 | for (const auto &lsal : canonical.lsals) |
9427 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9428 | } |
7a697b8d | 9429 | |
c3f6f71d JM |
9430 | /* Verify that condition can be parsed, before setting any |
9431 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9432 | breakpoint. */ |
0101ce28 | 9433 | if (!pending) |
c3f6f71d | 9434 | { |
e1e01040 PA |
9435 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9436 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9437 | ||
f00aae0f | 9438 | if (parse_extra) |
72b2ff0e | 9439 | { |
0878d0fa | 9440 | char *rest; |
e1e01040 | 9441 | char *cond; |
52d361e1 | 9442 | |
6c5b2ebe | 9443 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9444 | |
0878d0fa YQ |
9445 | /* Here we only parse 'arg' to separate condition |
9446 | from thread number, so parsing in context of first | |
9447 | sal is OK. When setting the breakpoint we'll | |
9448 | re-parse it in context of each sal. */ | |
9449 | ||
6c5b2ebe | 9450 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9451 | &cond, &thread, &task, &rest); |
9452 | cond_string_copy.reset (cond); | |
9453 | extra_string_copy.reset (rest); | |
72b2ff0e | 9454 | } |
2f069f6f | 9455 | else |
72b2ff0e | 9456 | { |
f00aae0f KS |
9457 | if (type_wanted != bp_dprintf |
9458 | && extra_string != NULL && *extra_string != '\0') | |
9459 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9460 | |
9461 | /* Create a private copy of condition string. */ | |
9462 | if (cond_string) | |
e1e01040 | 9463 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9464 | /* Create a private copy of any extra string. */ |
9465 | if (extra_string) | |
e1e01040 | 9466 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9467 | } |
0fb4aa4b | 9468 | |
52d361e1 | 9469 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9470 | std::move (cond_string_copy), |
9471 | std::move (extra_string_copy), | |
9472 | type_wanted, | |
d9b3f62e PA |
9473 | tempflag ? disp_del : disp_donttouch, |
9474 | thread, task, ignore_count, ops, | |
44f238bb | 9475 | from_tty, enabled, internal, flags); |
c906108c | 9476 | } |
0101ce28 JJ |
9477 | else |
9478 | { | |
a5e364af | 9479 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9480 | |
a5e364af | 9481 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9482 | b->location = copy_event_location (location); |
bfccc43c | 9483 | |
f00aae0f KS |
9484 | if (parse_extra) |
9485 | b->cond_string = NULL; | |
e12c7713 MK |
9486 | else |
9487 | { | |
9488 | /* Create a private copy of condition string. */ | |
e1e01040 | 9489 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9490 | b->thread = thread; |
e12c7713 | 9491 | } |
f00aae0f KS |
9492 | |
9493 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9494 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9495 | b->ignore_count = ignore_count; |
0101ce28 | 9496 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9497 | b->condition_not_parsed = 1; |
41447f92 | 9498 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9499 | if ((type_wanted != bp_breakpoint |
9500 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9501 | b->pspace = current_program_space; |
8bea4e01 | 9502 | |
b270e6f9 | 9503 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9504 | } |
9505 | ||
6c5b2ebe | 9506 | if (canonical.lsals.size () > 1) |
95a42b64 | 9507 | { |
3e43a32a MS |
9508 | warning (_("Multiple breakpoints were set.\nUse the " |
9509 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9510 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9511 | } |
9512 | ||
80c99de1 PA |
9513 | /* That's it. Discard the cleanups for data inserted into the |
9514 | breakpoint. */ | |
9515 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9516 | |
80c99de1 | 9517 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9518 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9519 | |
9520 | return 1; | |
c3f6f71d | 9521 | } |
c906108c | 9522 | |
348d480f | 9523 | /* Set a breakpoint. |
72b2ff0e VP |
9524 | ARG is a string describing breakpoint address, |
9525 | condition, and thread. | |
9526 | FLAG specifies if a breakpoint is hardware on, | |
9527 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9528 | and BP_TEMPFLAG. */ | |
348d480f | 9529 | |
98deb0da | 9530 | static void |
f2fc3015 | 9531 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9532 | { |
72b2ff0e | 9533 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9534 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9535 | ? bp_hardware_breakpoint | |
9536 | : bp_breakpoint); | |
55aa24fb | 9537 | struct breakpoint_ops *ops; |
f00aae0f | 9538 | |
ffc2605c | 9539 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9540 | |
9541 | /* Matching breakpoints on probes. */ | |
5b56227b | 9542 | if (location != NULL |
ffc2605c | 9543 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9544 | ops = &bkpt_probe_breakpoint_ops; |
9545 | else | |
9546 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9547 | |
8cdf0e15 | 9548 | create_breakpoint (get_current_arch (), |
ffc2605c | 9549 | location.get (), |
f00aae0f | 9550 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9551 | tempflag, type_wanted, |
8cdf0e15 VP |
9552 | 0 /* Ignore count */, |
9553 | pending_break_support, | |
55aa24fb | 9554 | ops, |
8cdf0e15 | 9555 | from_tty, |
84f4c1fe | 9556 | 1 /* enabled */, |
44f238bb PA |
9557 | 0 /* internal */, |
9558 | 0); | |
c906108c SS |
9559 | } |
9560 | ||
c906108c SS |
9561 | /* Helper function for break_command_1 and disassemble_command. */ |
9562 | ||
9563 | void | |
fba45db2 | 9564 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9565 | { |
9566 | CORE_ADDR pc; | |
9567 | ||
9568 | if (sal->pc == 0 && sal->symtab != NULL) | |
9569 | { | |
9570 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9571 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9572 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9573 | sal->pc = pc; |
6a048695 | 9574 | |
4a64f543 MS |
9575 | /* If this SAL corresponds to a breakpoint inserted using a line |
9576 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9577 | if (sal->explicit_line) |
059acae7 | 9578 | skip_prologue_sal (sal); |
c906108c SS |
9579 | } |
9580 | ||
9581 | if (sal->section == 0 && sal->symtab != NULL) | |
9582 | { | |
346d1dfe | 9583 | const struct blockvector *bv; |
3977b71f | 9584 | const struct block *b; |
c5aa993b | 9585 | struct symbol *sym; |
c906108c | 9586 | |
43f3e411 DE |
9587 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9588 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9589 | if (bv != NULL) |
9590 | { | |
7f0df278 | 9591 | sym = block_linkage_function (b); |
c906108c SS |
9592 | if (sym != NULL) |
9593 | { | |
eb822aa6 DE |
9594 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9595 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9596 | sym); | |
c906108c SS |
9597 | } |
9598 | else | |
9599 | { | |
4a64f543 MS |
9600 | /* It really is worthwhile to have the section, so we'll |
9601 | just have to look harder. This case can be executed | |
9602 | if we have line numbers but no functions (as can | |
9603 | happen in assembly source). */ | |
c906108c | 9604 | |
5ed8105e | 9605 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9606 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9607 | |
5ed8105e | 9608 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9609 | if (msym.minsym) |
efd66ac6 | 9610 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9611 | } |
9612 | } | |
9613 | } | |
9614 | } | |
9615 | ||
9616 | void | |
0b39b52e | 9617 | break_command (const char *arg, int from_tty) |
c906108c | 9618 | { |
db107f19 | 9619 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9620 | } |
9621 | ||
c906108c | 9622 | void |
0b39b52e | 9623 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9624 | { |
db107f19 | 9625 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9626 | } |
9627 | ||
c906108c | 9628 | static void |
0b39b52e | 9629 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9630 | { |
db107f19 | 9631 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9632 | } |
9633 | ||
9634 | static void | |
0b39b52e | 9635 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9636 | { |
db107f19 | 9637 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9638 | } |
9639 | ||
9640 | static void | |
ee7ddd71 | 9641 | stop_command (const char *arg, int from_tty) |
c906108c | 9642 | { |
a3f17187 | 9643 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9644 | Usage: stop in <function | address>\n\ |
a3f17187 | 9645 | stop at <line>\n")); |
c906108c SS |
9646 | } |
9647 | ||
9648 | static void | |
4495129a | 9649 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9650 | { |
9651 | int badInput = 0; | |
9652 | ||
c5aa993b | 9653 | if (arg == (char *) NULL) |
c906108c SS |
9654 | badInput = 1; |
9655 | else if (*arg != '*') | |
9656 | { | |
4495129a | 9657 | const char *argptr = arg; |
c906108c SS |
9658 | int hasColon = 0; |
9659 | ||
4a64f543 | 9660 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9661 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9662 | function/method name. */ |
c906108c | 9663 | while (*argptr && !hasColon) |
c5aa993b JM |
9664 | { |
9665 | hasColon = (*argptr == ':'); | |
9666 | argptr++; | |
9667 | } | |
c906108c SS |
9668 | |
9669 | if (hasColon) | |
c5aa993b | 9670 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9671 | else |
c5aa993b | 9672 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9673 | } |
9674 | ||
9675 | if (badInput) | |
a3f17187 | 9676 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9677 | else |
db107f19 | 9678 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9679 | } |
9680 | ||
9681 | static void | |
4495129a | 9682 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9683 | { |
9684 | int badInput = 0; | |
9685 | ||
c5aa993b | 9686 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9687 | badInput = 1; |
9688 | else | |
9689 | { | |
4495129a | 9690 | const char *argptr = arg; |
c906108c SS |
9691 | int hasColon = 0; |
9692 | ||
4a64f543 MS |
9693 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9694 | it is probably a line number. */ | |
c906108c | 9695 | while (*argptr && !hasColon) |
c5aa993b JM |
9696 | { |
9697 | hasColon = (*argptr == ':'); | |
9698 | argptr++; | |
9699 | } | |
c906108c SS |
9700 | |
9701 | if (hasColon) | |
c5aa993b | 9702 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9703 | else |
c5aa993b | 9704 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9705 | } |
9706 | ||
9707 | if (badInput) | |
a3f17187 | 9708 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9709 | else |
db107f19 | 9710 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9711 | } |
9712 | ||
e7e0cddf SS |
9713 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9714 | with a prewired command list consisting of a single output command, | |
9715 | built from extra arguments supplied on the dprintf command | |
9716 | line. */ | |
9717 | ||
da821c7b | 9718 | static void |
0b39b52e | 9719 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9720 | { |
ffc2605c | 9721 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9722 | |
9723 | /* If non-NULL, ARG should have been advanced past the location; | |
9724 | the next character must be ','. */ | |
9725 | if (arg != NULL) | |
9726 | { | |
9727 | if (arg[0] != ',' || arg[1] == '\0') | |
9728 | error (_("Format string required")); | |
9729 | else | |
9730 | { | |
9731 | /* Skip the comma. */ | |
9732 | ++arg; | |
9733 | } | |
9734 | } | |
9735 | ||
e7e0cddf | 9736 | create_breakpoint (get_current_arch (), |
ffc2605c | 9737 | location.get (), |
f00aae0f | 9738 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9739 | 0, bp_dprintf, |
9740 | 0 /* Ignore count */, | |
9741 | pending_break_support, | |
9742 | &dprintf_breakpoint_ops, | |
9743 | from_tty, | |
9744 | 1 /* enabled */, | |
9745 | 0 /* internal */, | |
9746 | 0); | |
9747 | } | |
9748 | ||
d3ce09f5 | 9749 | static void |
0b39b52e | 9750 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9751 | { |
9752 | error (_("May only run agent-printf on the target")); | |
9753 | } | |
9754 | ||
f1310107 TJB |
9755 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9756 | ranged breakpoints. */ | |
9757 | ||
9758 | static int | |
9759 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9760 | const address_space *aspace, |
09ac7c10 TT |
9761 | CORE_ADDR bp_addr, |
9762 | const struct target_waitstatus *ws) | |
f1310107 | 9763 | { |
09ac7c10 | 9764 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9765 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9766 | return 0; |
9767 | ||
f1310107 TJB |
9768 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9769 | bl->length, aspace, bp_addr); | |
9770 | } | |
9771 | ||
9772 | /* Implement the "resources_needed" breakpoint_ops method for | |
9773 | ranged breakpoints. */ | |
9774 | ||
9775 | static int | |
9776 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9777 | { | |
9778 | return target_ranged_break_num_registers (); | |
9779 | } | |
9780 | ||
9781 | /* Implement the "print_it" breakpoint_ops method for | |
9782 | ranged breakpoints. */ | |
9783 | ||
9784 | static enum print_stop_action | |
348d480f | 9785 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9786 | { |
348d480f | 9787 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9788 | struct bp_location *bl = b->loc; |
79a45e25 | 9789 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9790 | |
9791 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9792 | ||
9793 | /* Ranged breakpoints have only one location. */ | |
9794 | gdb_assert (bl && bl->next == NULL); | |
9795 | ||
9796 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9797 | |
9798 | maybe_print_thread_hit_breakpoint (uiout); | |
9799 | ||
f1310107 | 9800 | if (b->disposition == disp_del) |
112e8700 | 9801 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9802 | else |
112e8700 SM |
9803 | uiout->text ("Ranged breakpoint "); |
9804 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9805 | { |
112e8700 | 9806 | uiout->field_string ("reason", |
f1310107 | 9807 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9808 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9809 | } |
112e8700 SM |
9810 | uiout->field_int ("bkptno", b->number); |
9811 | uiout->text (", "); | |
f1310107 TJB |
9812 | |
9813 | return PRINT_SRC_AND_LOC; | |
9814 | } | |
9815 | ||
9816 | /* Implement the "print_one" breakpoint_ops method for | |
9817 | ranged breakpoints. */ | |
9818 | ||
9819 | static void | |
9820 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9821 | struct bp_location **last_loc) | |
9822 | { | |
9823 | struct bp_location *bl = b->loc; | |
9824 | struct value_print_options opts; | |
79a45e25 | 9825 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9826 | |
9827 | /* Ranged breakpoints have only one location. */ | |
9828 | gdb_assert (bl && bl->next == NULL); | |
9829 | ||
9830 | get_user_print_options (&opts); | |
9831 | ||
9832 | if (opts.addressprint) | |
9833 | /* We don't print the address range here, it will be printed later | |
9834 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9835 | uiout->field_skip ("addr"); |
f1310107 TJB |
9836 | annotate_field (5); |
9837 | print_breakpoint_location (b, bl); | |
9838 | *last_loc = bl; | |
9839 | } | |
9840 | ||
9841 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9842 | ranged breakpoints. */ | |
9843 | ||
9844 | static void | |
9845 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9846 | struct ui_out *uiout) | |
9847 | { | |
9848 | CORE_ADDR address_start, address_end; | |
9849 | struct bp_location *bl = b->loc; | |
d7e74731 | 9850 | string_file stb; |
f1310107 TJB |
9851 | |
9852 | gdb_assert (bl); | |
9853 | ||
9854 | address_start = bl->address; | |
9855 | address_end = address_start + bl->length - 1; | |
9856 | ||
112e8700 | 9857 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9858 | stb.printf ("[%s, %s]", |
9859 | print_core_address (bl->gdbarch, address_start), | |
9860 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9861 | uiout->field_stream ("addr", stb); |
9862 | uiout->text ("\n"); | |
f1310107 TJB |
9863 | } |
9864 | ||
9865 | /* Implement the "print_mention" breakpoint_ops method for | |
9866 | ranged breakpoints. */ | |
9867 | ||
9868 | static void | |
9869 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9870 | { | |
9871 | struct bp_location *bl = b->loc; | |
79a45e25 | 9872 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9873 | |
9874 | gdb_assert (bl); | |
9875 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9876 | ||
112e8700 | 9877 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9878 | return; |
9879 | ||
9880 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9881 | b->number, paddress (bl->gdbarch, bl->address), | |
9882 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9883 | } | |
9884 | ||
9885 | /* Implement the "print_recreate" breakpoint_ops method for | |
9886 | ranged breakpoints. */ | |
9887 | ||
9888 | static void | |
9889 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9890 | { | |
f00aae0f | 9891 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9892 | event_location_to_string (b->location.get ()), |
9893 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9894 | print_recreate_thread (b, fp); |
f1310107 TJB |
9895 | } |
9896 | ||
9897 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9898 | ||
2060206e | 9899 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9900 | |
9901 | /* Find the address where the end of the breakpoint range should be | |
9902 | placed, given the SAL of the end of the range. This is so that if | |
9903 | the user provides a line number, the end of the range is set to the | |
9904 | last instruction of the given line. */ | |
9905 | ||
9906 | static CORE_ADDR | |
9907 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9908 | { | |
9909 | CORE_ADDR end; | |
9910 | ||
9911 | /* If the user provided a PC value, use it. Otherwise, | |
9912 | find the address of the end of the given location. */ | |
9913 | if (sal.explicit_pc) | |
9914 | end = sal.pc; | |
9915 | else | |
9916 | { | |
9917 | int ret; | |
9918 | CORE_ADDR start; | |
9919 | ||
9920 | ret = find_line_pc_range (sal, &start, &end); | |
9921 | if (!ret) | |
9922 | error (_("Could not find location of the end of the range.")); | |
9923 | ||
9924 | /* find_line_pc_range returns the start of the next line. */ | |
9925 | end--; | |
9926 | } | |
9927 | ||
9928 | return end; | |
9929 | } | |
9930 | ||
9931 | /* Implement the "break-range" CLI command. */ | |
9932 | ||
9933 | static void | |
0b39b52e | 9934 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9935 | { |
f2fc3015 | 9936 | const char *arg_start; |
f1310107 TJB |
9937 | struct linespec_result canonical_start, canonical_end; |
9938 | int bp_count, can_use_bp, length; | |
9939 | CORE_ADDR end; | |
9940 | struct breakpoint *b; | |
f1310107 TJB |
9941 | |
9942 | /* We don't support software ranged breakpoints. */ | |
9943 | if (target_ranged_break_num_registers () < 0) | |
9944 | error (_("This target does not support hardware ranged breakpoints.")); | |
9945 | ||
9946 | bp_count = hw_breakpoint_used_count (); | |
9947 | bp_count += target_ranged_break_num_registers (); | |
9948 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9949 | bp_count, 0); | |
9950 | if (can_use_bp < 0) | |
9951 | error (_("Hardware breakpoints used exceeds limit.")); | |
9952 | ||
f8eba3c6 | 9953 | arg = skip_spaces (arg); |
f1310107 TJB |
9954 | if (arg == NULL || arg[0] == '\0') |
9955 | error(_("No address range specified.")); | |
9956 | ||
f8eba3c6 | 9957 | arg_start = arg; |
ffc2605c TT |
9958 | event_location_up start_location = string_to_event_location (&arg, |
9959 | current_language); | |
9960 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9961 | |
9962 | if (arg[0] != ',') | |
9963 | error (_("Too few arguments.")); | |
6c5b2ebe | 9964 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9965 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9966 | |
6c5b2ebe | 9967 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9968 | |
6c5b2ebe PA |
9969 | if (canonical_start.lsals.size () > 1 |
9970 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9971 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9972 | ||
6c5b2ebe | 9973 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9974 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9975 | |
9976 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9977 | arg = skip_spaces (arg); |
f1310107 TJB |
9978 | |
9979 | /* Parse the end location. */ | |
9980 | ||
f1310107 TJB |
9981 | arg_start = arg; |
9982 | ||
f8eba3c6 | 9983 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9984 | parse_breakpoint_sals because we need to specify the start location's |
9985 | symtab and line as the default symtab and line for the end of the | |
9986 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9987 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9988 | event_location_up end_location = string_to_event_location (&arg, |
9989 | current_language); | |
9990 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9991 | sal_start.symtab, sal_start.line, |
9992 | &canonical_end, NULL, NULL); | |
9993 | ||
6c5b2ebe | 9994 | if (canonical_end.lsals.empty ()) |
f1310107 | 9995 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9996 | |
6c5b2ebe PA |
9997 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9998 | if (canonical_end.lsals.size () > 1 | |
9999 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10000 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10001 | ||
6c5b2ebe | 10002 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10003 | |
10004 | end = find_breakpoint_range_end (sal_end); | |
10005 | if (sal_start.pc > end) | |
177b42fe | 10006 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10007 | |
10008 | length = end - sal_start.pc + 1; | |
10009 | if (length < 0) | |
10010 | /* Length overflowed. */ | |
10011 | error (_("Address range too large.")); | |
10012 | else if (length == 1) | |
10013 | { | |
10014 | /* This range is simple enough to be handled by | |
10015 | the `hbreak' command. */ | |
81b1e71c | 10016 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10017 | |
10018 | return; | |
10019 | } | |
10020 | ||
10021 | /* Now set up the breakpoint. */ | |
10022 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10023 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10024 | set_breakpoint_count (breakpoint_count + 1); |
10025 | b->number = breakpoint_count; | |
10026 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10027 | b->location = std::move (start_location); |
10028 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10029 | b->loc->length = length; |
10030 | ||
f1310107 | 10031 | mention (b); |
8d3788bd | 10032 | observer_notify_breakpoint_created (b); |
44702360 | 10033 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10034 | } |
10035 | ||
4a64f543 MS |
10036 | /* Return non-zero if EXP is verified as constant. Returned zero |
10037 | means EXP is variable. Also the constant detection may fail for | |
10038 | some constant expressions and in such case still falsely return | |
10039 | zero. */ | |
2e6e3d9c | 10040 | |
65d79d4b SDJ |
10041 | static int |
10042 | watchpoint_exp_is_const (const struct expression *exp) | |
10043 | { | |
10044 | int i = exp->nelts; | |
10045 | ||
10046 | while (i > 0) | |
10047 | { | |
10048 | int oplenp, argsp; | |
10049 | ||
10050 | /* We are only interested in the descriptor of each element. */ | |
10051 | operator_length (exp, i, &oplenp, &argsp); | |
10052 | i -= oplenp; | |
10053 | ||
10054 | switch (exp->elts[i].opcode) | |
10055 | { | |
10056 | case BINOP_ADD: | |
10057 | case BINOP_SUB: | |
10058 | case BINOP_MUL: | |
10059 | case BINOP_DIV: | |
10060 | case BINOP_REM: | |
10061 | case BINOP_MOD: | |
10062 | case BINOP_LSH: | |
10063 | case BINOP_RSH: | |
10064 | case BINOP_LOGICAL_AND: | |
10065 | case BINOP_LOGICAL_OR: | |
10066 | case BINOP_BITWISE_AND: | |
10067 | case BINOP_BITWISE_IOR: | |
10068 | case BINOP_BITWISE_XOR: | |
10069 | case BINOP_EQUAL: | |
10070 | case BINOP_NOTEQUAL: | |
10071 | case BINOP_LESS: | |
10072 | case BINOP_GTR: | |
10073 | case BINOP_LEQ: | |
10074 | case BINOP_GEQ: | |
10075 | case BINOP_REPEAT: | |
10076 | case BINOP_COMMA: | |
10077 | case BINOP_EXP: | |
10078 | case BINOP_MIN: | |
10079 | case BINOP_MAX: | |
10080 | case BINOP_INTDIV: | |
10081 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10082 | case TERNOP_COND: |
10083 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10084 | |
10085 | case OP_LONG: | |
edd079d9 | 10086 | case OP_FLOAT: |
65d79d4b SDJ |
10087 | case OP_LAST: |
10088 | case OP_COMPLEX: | |
10089 | case OP_STRING: | |
65d79d4b SDJ |
10090 | case OP_ARRAY: |
10091 | case OP_TYPE: | |
608b4967 TT |
10092 | case OP_TYPEOF: |
10093 | case OP_DECLTYPE: | |
6e72ca20 | 10094 | case OP_TYPEID: |
65d79d4b SDJ |
10095 | case OP_NAME: |
10096 | case OP_OBJC_NSSTRING: | |
10097 | ||
10098 | case UNOP_NEG: | |
10099 | case UNOP_LOGICAL_NOT: | |
10100 | case UNOP_COMPLEMENT: | |
10101 | case UNOP_ADDR: | |
10102 | case UNOP_HIGH: | |
aeaa2474 | 10103 | case UNOP_CAST: |
9eaf6705 TT |
10104 | |
10105 | case UNOP_CAST_TYPE: | |
10106 | case UNOP_REINTERPRET_CAST: | |
10107 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10108 | /* Unary, binary and ternary operators: We have to check |
10109 | their operands. If they are constant, then so is the | |
10110 | result of that operation. For instance, if A and B are | |
10111 | determined to be constants, then so is "A + B". | |
10112 | ||
10113 | UNOP_IND is one exception to the rule above, because the | |
10114 | value of *ADDR is not necessarily a constant, even when | |
10115 | ADDR is. */ | |
65d79d4b SDJ |
10116 | break; |
10117 | ||
10118 | case OP_VAR_VALUE: | |
10119 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10120 | |
65d79d4b | 10121 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10122 | possible that a buggy compiler could mark a variable as |
10123 | constant even when it is not, and TYPE_CONST would return | |
10124 | true in this case, while SYMBOL_CLASS wouldn't. | |
10125 | ||
10126 | We also have to check for function symbols because they | |
10127 | are always constant. */ | |
65d79d4b SDJ |
10128 | { |
10129 | struct symbol *s = exp->elts[i + 2].symbol; | |
10130 | ||
10131 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10132 | && SYMBOL_CLASS (s) != LOC_CONST | |
10133 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10134 | return 0; | |
10135 | break; | |
10136 | } | |
10137 | ||
10138 | /* The default action is to return 0 because we are using | |
10139 | the optimistic approach here: If we don't know something, | |
10140 | then it is not a constant. */ | |
10141 | default: | |
10142 | return 0; | |
10143 | } | |
10144 | } | |
10145 | ||
10146 | return 1; | |
10147 | } | |
10148 | ||
c1fc2657 | 10149 | /* Watchpoint destructor. */ |
3a5c3e22 | 10150 | |
c1fc2657 | 10151 | watchpoint::~watchpoint () |
3a5c3e22 | 10152 | { |
c1fc2657 SM |
10153 | xfree (this->exp_string); |
10154 | xfree (this->exp_string_reparse); | |
10155 | value_free (this->val); | |
3a5c3e22 PA |
10156 | } |
10157 | ||
348d480f PA |
10158 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10159 | ||
10160 | static void | |
10161 | re_set_watchpoint (struct breakpoint *b) | |
10162 | { | |
3a5c3e22 PA |
10163 | struct watchpoint *w = (struct watchpoint *) b; |
10164 | ||
348d480f PA |
10165 | /* Watchpoint can be either on expression using entirely global |
10166 | variables, or it can be on local variables. | |
10167 | ||
10168 | Watchpoints of the first kind are never auto-deleted, and even | |
10169 | persist across program restarts. Since they can use variables | |
10170 | from shared libraries, we need to reparse expression as libraries | |
10171 | are loaded and unloaded. | |
10172 | ||
10173 | Watchpoints on local variables can also change meaning as result | |
10174 | of solib event. For example, if a watchpoint uses both a local | |
10175 | and a global variables in expression, it's a local watchpoint, | |
10176 | but unloading of a shared library will make the expression | |
10177 | invalid. This is not a very common use case, but we still | |
10178 | re-evaluate expression, to avoid surprises to the user. | |
10179 | ||
10180 | Note that for local watchpoints, we re-evaluate it only if | |
10181 | watchpoints frame id is still valid. If it's not, it means the | |
10182 | watchpoint is out of scope and will be deleted soon. In fact, | |
10183 | I'm not sure we'll ever be called in this case. | |
10184 | ||
10185 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10186 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10187 | |
3a5c3e22 PA |
10188 | Don't do anything about disabled watchpoints, since they will be |
10189 | reevaluated again when enabled. */ | |
10190 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10191 | } |
10192 | ||
77b06cd7 TJB |
10193 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10194 | ||
10195 | static int | |
10196 | insert_watchpoint (struct bp_location *bl) | |
10197 | { | |
3a5c3e22 PA |
10198 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10199 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10200 | |
10201 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10202 | w->cond_exp.get ()); |
77b06cd7 TJB |
10203 | } |
10204 | ||
10205 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10206 | ||
10207 | static int | |
73971819 | 10208 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10209 | { |
3a5c3e22 PA |
10210 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10211 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10212 | |
10213 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10214 | w->cond_exp.get ()); |
e09342b5 TJB |
10215 | } |
10216 | ||
e09342b5 | 10217 | static int |
348d480f | 10218 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10219 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10220 | const struct target_waitstatus *ws) |
e09342b5 | 10221 | { |
348d480f | 10222 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10223 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10224 | |
348d480f PA |
10225 | /* Continuable hardware watchpoints are treated as non-existent if the |
10226 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10227 | some data address). Otherwise gdb won't stop on a break instruction | |
10228 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10229 | been defined. Also skip watchpoints which we know did not trigger | |
10230 | (did not match the data address). */ | |
10231 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10232 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10233 | return 0; |
9c06b0b4 | 10234 | |
348d480f | 10235 | return 1; |
9c06b0b4 TJB |
10236 | } |
10237 | ||
348d480f PA |
10238 | static void |
10239 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10240 | { |
348d480f | 10241 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10242 | |
348d480f | 10243 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10244 | } |
10245 | ||
10246 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10247 | hardware watchpoints. */ |
9c06b0b4 TJB |
10248 | |
10249 | static int | |
348d480f | 10250 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10251 | { |
3a5c3e22 PA |
10252 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10253 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10254 | |
10255 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10256 | } |
10257 | ||
10258 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10259 | hardware watchpoints. */ |
9c06b0b4 TJB |
10260 | |
10261 | static int | |
348d480f | 10262 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10263 | { |
efa80663 PA |
10264 | /* Read and access watchpoints only work with hardware support. */ |
10265 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10266 | } |
10267 | ||
9c06b0b4 | 10268 | static enum print_stop_action |
348d480f | 10269 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10270 | { |
348d480f | 10271 | struct breakpoint *b; |
348d480f | 10272 | enum print_stop_action result; |
3a5c3e22 | 10273 | struct watchpoint *w; |
79a45e25 | 10274 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10275 | |
10276 | gdb_assert (bs->bp_location_at != NULL); | |
10277 | ||
348d480f | 10278 | b = bs->breakpoint_at; |
3a5c3e22 | 10279 | w = (struct watchpoint *) b; |
348d480f | 10280 | |
f303dbd6 PA |
10281 | annotate_watchpoint (b->number); |
10282 | maybe_print_thread_hit_breakpoint (uiout); | |
10283 | ||
d7e74731 PA |
10284 | string_file stb; |
10285 | ||
76f9c9cf | 10286 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10287 | switch (b->type) |
10288 | { | |
348d480f | 10289 | case bp_watchpoint: |
9c06b0b4 | 10290 | case bp_hardware_watchpoint: |
112e8700 SM |
10291 | if (uiout->is_mi_like_p ()) |
10292 | uiout->field_string | |
10293 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10294 | mention (b); |
76f9c9cf | 10295 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10296 | uiout->text ("\nOld value = "); |
d7e74731 | 10297 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10298 | uiout->field_stream ("old", stb); |
10299 | uiout->text ("\nNew value = "); | |
d7e74731 | 10300 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10301 | uiout->field_stream ("new", stb); |
10302 | uiout->text ("\n"); | |
348d480f PA |
10303 | /* More than one watchpoint may have been triggered. */ |
10304 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10305 | break; |
10306 | ||
10307 | case bp_read_watchpoint: | |
112e8700 SM |
10308 | if (uiout->is_mi_like_p ()) |
10309 | uiout->field_string | |
10310 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10311 | mention (b); |
76f9c9cf | 10312 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10313 | uiout->text ("\nValue = "); |
d7e74731 | 10314 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10315 | uiout->field_stream ("value", stb); |
10316 | uiout->text ("\n"); | |
348d480f | 10317 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10318 | break; |
10319 | ||
10320 | case bp_access_watchpoint: | |
348d480f PA |
10321 | if (bs->old_val != NULL) |
10322 | { | |
112e8700 SM |
10323 | if (uiout->is_mi_like_p ()) |
10324 | uiout->field_string | |
10325 | ("reason", | |
348d480f PA |
10326 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10327 | mention (b); | |
76f9c9cf | 10328 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10329 | uiout->text ("\nOld value = "); |
d7e74731 | 10330 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10331 | uiout->field_stream ("old", stb); |
10332 | uiout->text ("\nNew value = "); | |
348d480f PA |
10333 | } |
10334 | else | |
10335 | { | |
10336 | mention (b); | |
112e8700 SM |
10337 | if (uiout->is_mi_like_p ()) |
10338 | uiout->field_string | |
10339 | ("reason", | |
348d480f | 10340 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10341 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10342 | uiout->text ("\nValue = "); |
348d480f | 10343 | } |
d7e74731 | 10344 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10345 | uiout->field_stream ("new", stb); |
10346 | uiout->text ("\n"); | |
348d480f | 10347 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10348 | break; |
10349 | default: | |
348d480f | 10350 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10351 | } |
10352 | ||
348d480f PA |
10353 | return result; |
10354 | } | |
10355 | ||
10356 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10357 | watchpoints. */ | |
10358 | ||
10359 | static void | |
10360 | print_mention_watchpoint (struct breakpoint *b) | |
10361 | { | |
3a5c3e22 | 10362 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10363 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10364 | const char *tuple_name; |
348d480f PA |
10365 | |
10366 | switch (b->type) | |
10367 | { | |
10368 | case bp_watchpoint: | |
112e8700 | 10369 | uiout->text ("Watchpoint "); |
46b9c129 | 10370 | tuple_name = "wpt"; |
348d480f PA |
10371 | break; |
10372 | case bp_hardware_watchpoint: | |
112e8700 | 10373 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10374 | tuple_name = "wpt"; |
348d480f PA |
10375 | break; |
10376 | case bp_read_watchpoint: | |
112e8700 | 10377 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10378 | tuple_name = "hw-rwpt"; |
348d480f PA |
10379 | break; |
10380 | case bp_access_watchpoint: | |
112e8700 | 10381 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10382 | tuple_name = "hw-awpt"; |
348d480f PA |
10383 | break; |
10384 | default: | |
10385 | internal_error (__FILE__, __LINE__, | |
10386 | _("Invalid hardware watchpoint type.")); | |
10387 | } | |
10388 | ||
46b9c129 | 10389 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10390 | uiout->field_int ("number", b->number); |
10391 | uiout->text (": "); | |
10392 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10393 | } |
10394 | ||
10395 | /* Implement the "print_recreate" breakpoint_ops method for | |
10396 | watchpoints. */ | |
10397 | ||
10398 | static void | |
10399 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10400 | { | |
3a5c3e22 PA |
10401 | struct watchpoint *w = (struct watchpoint *) b; |
10402 | ||
348d480f PA |
10403 | switch (b->type) |
10404 | { | |
10405 | case bp_watchpoint: | |
10406 | case bp_hardware_watchpoint: | |
10407 | fprintf_unfiltered (fp, "watch"); | |
10408 | break; | |
10409 | case bp_read_watchpoint: | |
10410 | fprintf_unfiltered (fp, "rwatch"); | |
10411 | break; | |
10412 | case bp_access_watchpoint: | |
10413 | fprintf_unfiltered (fp, "awatch"); | |
10414 | break; | |
10415 | default: | |
10416 | internal_error (__FILE__, __LINE__, | |
10417 | _("Invalid watchpoint type.")); | |
10418 | } | |
10419 | ||
3a5c3e22 | 10420 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10421 | print_recreate_thread (b, fp); |
348d480f PA |
10422 | } |
10423 | ||
427cd150 TT |
10424 | /* Implement the "explains_signal" breakpoint_ops method for |
10425 | watchpoints. */ | |
10426 | ||
47591c29 | 10427 | static int |
427cd150 TT |
10428 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10429 | { | |
10430 | /* A software watchpoint cannot cause a signal other than | |
10431 | GDB_SIGNAL_TRAP. */ | |
10432 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10433 | return 0; |
427cd150 | 10434 | |
47591c29 | 10435 | return 1; |
427cd150 TT |
10436 | } |
10437 | ||
348d480f PA |
10438 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10439 | ||
2060206e | 10440 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10441 | |
10442 | /* Implement the "insert" breakpoint_ops method for | |
10443 | masked hardware watchpoints. */ | |
10444 | ||
10445 | static int | |
10446 | insert_masked_watchpoint (struct bp_location *bl) | |
10447 | { | |
3a5c3e22 PA |
10448 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10449 | ||
10450 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10451 | bl->watchpoint_type); |
10452 | } | |
10453 | ||
10454 | /* Implement the "remove" breakpoint_ops method for | |
10455 | masked hardware watchpoints. */ | |
10456 | ||
10457 | static int | |
73971819 | 10458 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10459 | { |
3a5c3e22 PA |
10460 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10461 | ||
10462 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10463 | bl->watchpoint_type); |
10464 | } | |
10465 | ||
10466 | /* Implement the "resources_needed" breakpoint_ops method for | |
10467 | masked hardware watchpoints. */ | |
10468 | ||
10469 | static int | |
10470 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10471 | { | |
3a5c3e22 PA |
10472 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10473 | ||
10474 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10475 | } |
10476 | ||
10477 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10478 | masked hardware watchpoints. */ | |
10479 | ||
10480 | static int | |
10481 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10482 | { | |
10483 | return 0; | |
10484 | } | |
10485 | ||
10486 | /* Implement the "print_it" breakpoint_ops method for | |
10487 | masked hardware watchpoints. */ | |
10488 | ||
10489 | static enum print_stop_action | |
10490 | print_it_masked_watchpoint (bpstat bs) | |
10491 | { | |
10492 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10493 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10494 | |
10495 | /* Masked watchpoints have only one location. */ | |
10496 | gdb_assert (b->loc && b->loc->next == NULL); | |
10497 | ||
f303dbd6 PA |
10498 | annotate_watchpoint (b->number); |
10499 | maybe_print_thread_hit_breakpoint (uiout); | |
10500 | ||
348d480f PA |
10501 | switch (b->type) |
10502 | { | |
10503 | case bp_hardware_watchpoint: | |
112e8700 SM |
10504 | if (uiout->is_mi_like_p ()) |
10505 | uiout->field_string | |
10506 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10507 | break; |
10508 | ||
10509 | case bp_read_watchpoint: | |
112e8700 SM |
10510 | if (uiout->is_mi_like_p ()) |
10511 | uiout->field_string | |
10512 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10513 | break; |
10514 | ||
10515 | case bp_access_watchpoint: | |
112e8700 SM |
10516 | if (uiout->is_mi_like_p ()) |
10517 | uiout->field_string | |
10518 | ("reason", | |
348d480f PA |
10519 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10520 | break; | |
10521 | default: | |
10522 | internal_error (__FILE__, __LINE__, | |
10523 | _("Invalid hardware watchpoint type.")); | |
10524 | } | |
10525 | ||
10526 | mention (b); | |
112e8700 | 10527 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10528 | Check the underlying instruction at PC for the memory\n\ |
10529 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10530 | uiout->text ("\n"); |
9c06b0b4 TJB |
10531 | |
10532 | /* More than one watchpoint may have been triggered. */ | |
10533 | return PRINT_UNKNOWN; | |
10534 | } | |
10535 | ||
10536 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10537 | masked hardware watchpoints. */ | |
10538 | ||
10539 | static void | |
10540 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10541 | struct ui_out *uiout) | |
10542 | { | |
3a5c3e22 PA |
10543 | struct watchpoint *w = (struct watchpoint *) b; |
10544 | ||
9c06b0b4 TJB |
10545 | /* Masked watchpoints have only one location. */ |
10546 | gdb_assert (b->loc && b->loc->next == NULL); | |
10547 | ||
112e8700 SM |
10548 | uiout->text ("\tmask "); |
10549 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10550 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10551 | } |
10552 | ||
10553 | /* Implement the "print_mention" breakpoint_ops method for | |
10554 | masked hardware watchpoints. */ | |
10555 | ||
10556 | static void | |
10557 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10558 | { | |
3a5c3e22 | 10559 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10560 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10561 | const char *tuple_name; |
9c06b0b4 TJB |
10562 | |
10563 | switch (b->type) | |
10564 | { | |
10565 | case bp_hardware_watchpoint: | |
112e8700 | 10566 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10567 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10568 | break; |
10569 | case bp_read_watchpoint: | |
112e8700 | 10570 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10571 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10572 | break; |
10573 | case bp_access_watchpoint: | |
112e8700 | 10574 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10575 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10576 | break; |
10577 | default: | |
10578 | internal_error (__FILE__, __LINE__, | |
10579 | _("Invalid hardware watchpoint type.")); | |
10580 | } | |
10581 | ||
46b9c129 | 10582 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10583 | uiout->field_int ("number", b->number); |
10584 | uiout->text (": "); | |
10585 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10586 | } |
10587 | ||
10588 | /* Implement the "print_recreate" breakpoint_ops method for | |
10589 | masked hardware watchpoints. */ | |
10590 | ||
10591 | static void | |
10592 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10593 | { | |
3a5c3e22 | 10594 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10595 | char tmp[40]; |
10596 | ||
10597 | switch (b->type) | |
10598 | { | |
10599 | case bp_hardware_watchpoint: | |
10600 | fprintf_unfiltered (fp, "watch"); | |
10601 | break; | |
10602 | case bp_read_watchpoint: | |
10603 | fprintf_unfiltered (fp, "rwatch"); | |
10604 | break; | |
10605 | case bp_access_watchpoint: | |
10606 | fprintf_unfiltered (fp, "awatch"); | |
10607 | break; | |
10608 | default: | |
10609 | internal_error (__FILE__, __LINE__, | |
10610 | _("Invalid hardware watchpoint type.")); | |
10611 | } | |
10612 | ||
3a5c3e22 PA |
10613 | sprintf_vma (tmp, w->hw_wp_mask); |
10614 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10615 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10616 | } |
10617 | ||
10618 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10619 | ||
2060206e | 10620 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10621 | |
10622 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10623 | ||
10624 | static int | |
10625 | is_masked_watchpoint (const struct breakpoint *b) | |
10626 | { | |
10627 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10628 | } | |
10629 | ||
53a5351d JM |
10630 | /* accessflag: hw_write: watch write, |
10631 | hw_read: watch read, | |
10632 | hw_access: watch access (read or write) */ | |
c906108c | 10633 | static void |
bbc13ae3 | 10634 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10635 | int just_location, int internal) |
c906108c | 10636 | { |
c1fc2657 | 10637 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10638 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10639 | struct value *val, *mark, *result; |
bb9d5f81 | 10640 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10641 | const char *exp_start = NULL; |
10642 | const char *exp_end = NULL; | |
10643 | const char *tok, *end_tok; | |
9c06b0b4 | 10644 | int toklen = -1; |
bbc13ae3 KS |
10645 | const char *cond_start = NULL; |
10646 | const char *cond_end = NULL; | |
c906108c | 10647 | enum bptype bp_type; |
37e4754d | 10648 | int thread = -1; |
0cf6dd15 | 10649 | int pc = 0; |
9c06b0b4 TJB |
10650 | /* Flag to indicate whether we are going to use masks for |
10651 | the hardware watchpoint. */ | |
10652 | int use_mask = 0; | |
10653 | CORE_ADDR mask = 0; | |
c906108c | 10654 | |
37e4754d LM |
10655 | /* Make sure that we actually have parameters to parse. */ |
10656 | if (arg != NULL && arg[0] != '\0') | |
10657 | { | |
bbc13ae3 KS |
10658 | const char *value_start; |
10659 | ||
10660 | exp_end = arg + strlen (arg); | |
37e4754d | 10661 | |
9c06b0b4 TJB |
10662 | /* Look for "parameter value" pairs at the end |
10663 | of the arguments string. */ | |
bbc13ae3 | 10664 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10665 | { |
10666 | /* Skip whitespace at the end of the argument list. */ | |
10667 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10668 | tok--; | |
10669 | ||
10670 | /* Find the beginning of the last token. | |
10671 | This is the value of the parameter. */ | |
10672 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10673 | tok--; | |
10674 | value_start = tok + 1; | |
10675 | ||
10676 | /* Skip whitespace. */ | |
10677 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10678 | tok--; | |
10679 | ||
10680 | end_tok = tok; | |
10681 | ||
10682 | /* Find the beginning of the second to last token. | |
10683 | This is the parameter itself. */ | |
10684 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10685 | tok--; | |
10686 | tok++; | |
10687 | toklen = end_tok - tok + 1; | |
10688 | ||
61012eef | 10689 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10690 | { |
5d5658a1 | 10691 | struct thread_info *thr; |
9c06b0b4 TJB |
10692 | /* At this point we've found a "thread" token, which means |
10693 | the user is trying to set a watchpoint that triggers | |
10694 | only in a specific thread. */ | |
5d5658a1 | 10695 | const char *endp; |
37e4754d | 10696 | |
9c06b0b4 TJB |
10697 | if (thread != -1) |
10698 | error(_("You can specify only one thread.")); | |
37e4754d | 10699 | |
9c06b0b4 | 10700 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10701 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10702 | |
5d5658a1 | 10703 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10704 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10705 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10706 | |
5d5658a1 | 10707 | thread = thr->global_num; |
9c06b0b4 | 10708 | } |
61012eef | 10709 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10710 | { |
10711 | /* We've found a "mask" token, which means the user wants to | |
10712 | create a hardware watchpoint that is going to have the mask | |
10713 | facility. */ | |
10714 | struct value *mask_value, *mark; | |
37e4754d | 10715 | |
9c06b0b4 TJB |
10716 | if (use_mask) |
10717 | error(_("You can specify only one mask.")); | |
37e4754d | 10718 | |
9c06b0b4 | 10719 | use_mask = just_location = 1; |
37e4754d | 10720 | |
9c06b0b4 TJB |
10721 | mark = value_mark (); |
10722 | mask_value = parse_to_comma_and_eval (&value_start); | |
10723 | mask = value_as_address (mask_value); | |
10724 | value_free_to_mark (mark); | |
10725 | } | |
10726 | else | |
10727 | /* We didn't recognize what we found. We should stop here. */ | |
10728 | break; | |
37e4754d | 10729 | |
9c06b0b4 TJB |
10730 | /* Truncate the string and get rid of the "parameter value" pair before |
10731 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10732 | exp_end = tok; |
9c06b0b4 | 10733 | } |
37e4754d | 10734 | } |
bbc13ae3 KS |
10735 | else |
10736 | exp_end = arg; | |
37e4754d | 10737 | |
bbc13ae3 KS |
10738 | /* Parse the rest of the arguments. From here on out, everything |
10739 | is in terms of a newly allocated string instead of the original | |
10740 | ARG. */ | |
c906108c | 10741 | innermost_block = NULL; |
81b1e71c TT |
10742 | std::string expression (arg, exp_end - arg); |
10743 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10744 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10745 | exp_end = arg; |
fa8a61dc TT |
10746 | /* Remove trailing whitespace from the expression before saving it. |
10747 | This makes the eventual display of the expression string a bit | |
10748 | prettier. */ | |
10749 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10750 | --exp_end; | |
10751 | ||
65d79d4b | 10752 | /* Checking if the expression is not constant. */ |
4d01a485 | 10753 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10754 | { |
10755 | int len; | |
10756 | ||
10757 | len = exp_end - exp_start; | |
10758 | while (len > 0 && isspace (exp_start[len - 1])) | |
10759 | len--; | |
10760 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10761 | } | |
10762 | ||
c906108c SS |
10763 | exp_valid_block = innermost_block; |
10764 | mark = value_mark (); | |
4d01a485 | 10765 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10766 | |
bb9d5f81 PP |
10767 | if (val != NULL && just_location) |
10768 | { | |
10769 | saved_bitpos = value_bitpos (val); | |
10770 | saved_bitsize = value_bitsize (val); | |
10771 | } | |
10772 | ||
06a64a0b TT |
10773 | if (just_location) |
10774 | { | |
9c06b0b4 TJB |
10775 | int ret; |
10776 | ||
06a64a0b | 10777 | exp_valid_block = NULL; |
a1442452 | 10778 | val = value_addr (result); |
06a64a0b TT |
10779 | release_value (val); |
10780 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10781 | |
10782 | if (use_mask) | |
10783 | { | |
10784 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10785 | mask); | |
10786 | if (ret == -1) | |
10787 | error (_("This target does not support masked watchpoints.")); | |
10788 | else if (ret == -2) | |
10789 | error (_("Invalid mask or memory region.")); | |
10790 | } | |
06a64a0b TT |
10791 | } |
10792 | else if (val != NULL) | |
fa4727a6 | 10793 | release_value (val); |
c906108c | 10794 | |
f1735a53 TT |
10795 | tok = skip_spaces (arg); |
10796 | end_tok = skip_to_space (tok); | |
c906108c SS |
10797 | |
10798 | toklen = end_tok - tok; | |
10799 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10800 | { | |
60e1c644 | 10801 | innermost_block = NULL; |
c906108c | 10802 | tok = cond_start = end_tok + 1; |
4d01a485 | 10803 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10804 | |
10805 | /* The watchpoint expression may not be local, but the condition | |
10806 | may still be. E.g.: `watch global if local > 0'. */ | |
10807 | cond_exp_valid_block = innermost_block; | |
10808 | ||
c906108c SS |
10809 | cond_end = tok; |
10810 | } | |
10811 | if (*tok) | |
8a3fe4f8 | 10812 | error (_("Junk at end of command.")); |
c906108c | 10813 | |
441d7c93 PA |
10814 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10815 | ||
10816 | /* Save this because create_internal_breakpoint below invalidates | |
10817 | 'wp_frame'. */ | |
10818 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10819 | |
10820 | /* If the expression is "local", then set up a "watchpoint scope" | |
10821 | breakpoint at the point where we've left the scope of the watchpoint | |
10822 | expression. Create the scope breakpoint before the watchpoint, so | |
10823 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10824 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10825 | { |
441d7c93 PA |
10826 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10827 | ||
10828 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10829 | { |
441d7c93 PA |
10830 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10831 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10832 | ||
edb3359d | 10833 | scope_breakpoint |
441d7c93 | 10834 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10835 | bp_watchpoint_scope, |
10836 | &momentary_breakpoint_ops); | |
d983da9c | 10837 | |
441d7c93 PA |
10838 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10839 | wp_frame = NULL; | |
10840 | ||
edb3359d | 10841 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10842 | |
edb3359d DJ |
10843 | /* Automatically delete the breakpoint when it hits. */ |
10844 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10845 | |
edb3359d | 10846 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10847 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10848 | |
edb3359d | 10849 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10850 | scope_breakpoint->loc->gdbarch = caller_arch; |
10851 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10852 | scope_breakpoint->loc->address |
a6d9a66e UW |
10853 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10854 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10855 | scope_breakpoint->type); |
10856 | } | |
d983da9c DJ |
10857 | } |
10858 | ||
e8369a73 AB |
10859 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10860 | watchpoints here even if hardware watchpoints are turned off, a call | |
10861 | to update_watchpoint later in this function will cause the type to | |
10862 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10863 | ||
10864 | if (accessflag == hw_read) | |
10865 | bp_type = bp_read_watchpoint; | |
10866 | else if (accessflag == hw_access) | |
10867 | bp_type = bp_access_watchpoint; | |
10868 | else | |
10869 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10870 | |
b270e6f9 | 10871 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10872 | |
348d480f | 10873 | if (use_mask) |
b270e6f9 | 10874 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10875 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10876 | else |
b270e6f9 | 10877 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10878 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10879 | w->thread = thread; |
10880 | w->disposition = disp_donttouch; | |
10881 | w->pspace = current_program_space; | |
b22e99fd | 10882 | w->exp = std::move (exp); |
3a5c3e22 PA |
10883 | w->exp_valid_block = exp_valid_block; |
10884 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10885 | if (just_location) |
10886 | { | |
10887 | struct type *t = value_type (val); | |
10888 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 10889 | |
43cc5389 TT |
10890 | w->exp_string_reparse |
10891 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10892 | |
3a5c3e22 | 10893 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10894 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10895 | } |
10896 | else | |
3a5c3e22 | 10897 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10898 | |
10899 | if (use_mask) | |
10900 | { | |
3a5c3e22 | 10901 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10902 | } |
10903 | else | |
10904 | { | |
3a5c3e22 | 10905 | w->val = val; |
bb9d5f81 PP |
10906 | w->val_bitpos = saved_bitpos; |
10907 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10908 | w->val_valid = 1; |
9c06b0b4 | 10909 | } |
77b06cd7 | 10910 | |
c906108c | 10911 | if (cond_start) |
c1fc2657 | 10912 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10913 | else |
c1fc2657 | 10914 | w->cond_string = 0; |
c5aa993b | 10915 | |
441d7c93 | 10916 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10917 | { |
441d7c93 | 10918 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10919 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10920 | } |
c906108c | 10921 | else |
f6bc2008 | 10922 | { |
3a5c3e22 PA |
10923 | w->watchpoint_frame = null_frame_id; |
10924 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10925 | } |
c906108c | 10926 | |
d983da9c | 10927 | if (scope_breakpoint != NULL) |
c906108c | 10928 | { |
d983da9c DJ |
10929 | /* The scope breakpoint is related to the watchpoint. We will |
10930 | need to act on them together. */ | |
c1fc2657 | 10931 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10932 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10933 | } |
d983da9c | 10934 | |
06a64a0b TT |
10935 | if (!just_location) |
10936 | value_free_to_mark (mark); | |
2d134ed3 | 10937 | |
b270e6f9 TT |
10938 | /* Finally update the new watchpoint. This creates the locations |
10939 | that should be inserted. */ | |
10940 | update_watchpoint (w.get (), 1); | |
a9634178 | 10941 | |
b270e6f9 | 10942 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10943 | } |
10944 | ||
e09342b5 | 10945 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10946 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10947 | |
c906108c | 10948 | static int |
a9634178 | 10949 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10950 | { |
10951 | int found_memory_cnt = 0; | |
2e70b7b9 | 10952 | struct value *head = v; |
c906108c SS |
10953 | |
10954 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10955 | if (!can_use_hw_watchpoints) |
c906108c | 10956 | return 0; |
c5aa993b | 10957 | |
5c44784c JM |
10958 | /* Make sure that the value of the expression depends only upon |
10959 | memory contents, and values computed from them within GDB. If we | |
10960 | find any register references or function calls, we can't use a | |
10961 | hardware watchpoint. | |
10962 | ||
10963 | The idea here is that evaluating an expression generates a series | |
10964 | of values, one holding the value of every subexpression. (The | |
10965 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10966 | a*b+c.) GDB's values hold almost enough information to establish | |
10967 | the criteria given above --- they identify memory lvalues, | |
10968 | register lvalues, computed values, etcetera. So we can evaluate | |
10969 | the expression, and then scan the chain of values that leaves | |
10970 | behind to decide whether we can detect any possible change to the | |
10971 | expression's final value using only hardware watchpoints. | |
10972 | ||
10973 | However, I don't think that the values returned by inferior | |
10974 | function calls are special in any way. So this function may not | |
10975 | notice that an expression involving an inferior function call | |
10976 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 10977 | for (; v; v = value_next (v)) |
c906108c | 10978 | { |
5c44784c | 10979 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10980 | { |
8464be76 DJ |
10981 | if (v != head && value_lazy (v)) |
10982 | /* A lazy memory lvalue in the chain is one that GDB never | |
10983 | needed to fetch; we either just used its address (e.g., | |
10984 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10985 | in `a,b'). This doesn't apply to HEAD; if that is | |
10986 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10987 | ; |
53a5351d | 10988 | else |
5c44784c JM |
10989 | { |
10990 | /* Ahh, memory we actually used! Check if we can cover | |
10991 | it with hardware watchpoints. */ | |
df407dfe | 10992 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10993 | |
10994 | /* We only watch structs and arrays if user asked for it | |
10995 | explicitly, never if they just happen to appear in a | |
10996 | middle of some value chain. */ | |
10997 | if (v == head | |
10998 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10999 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11000 | { | |
42ae5230 | 11001 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11002 | int len; |
11003 | int num_regs; | |
11004 | ||
a9634178 | 11005 | len = (target_exact_watchpoints |
e09342b5 TJB |
11006 | && is_scalar_type_recursive (vtype))? |
11007 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11008 | |
e09342b5 TJB |
11009 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11010 | if (!num_regs) | |
2e70b7b9 MS |
11011 | return 0; |
11012 | else | |
e09342b5 | 11013 | found_memory_cnt += num_regs; |
2e70b7b9 | 11014 | } |
5c44784c | 11015 | } |
c5aa993b | 11016 | } |
5086187c AC |
11017 | else if (VALUE_LVAL (v) != not_lval |
11018 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11019 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11020 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11021 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11022 | } |
11023 | ||
11024 | /* The expression itself looks suitable for using a hardware | |
11025 | watchpoint, but give the target machine a chance to reject it. */ | |
11026 | return found_memory_cnt; | |
11027 | } | |
11028 | ||
8b93c638 | 11029 | void |
f2fc3015 | 11030 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11031 | { |
84f4c1fe | 11032 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11033 | } |
11034 | ||
06a64a0b TT |
11035 | /* A helper function that looks for the "-location" argument and then |
11036 | calls watch_command_1. */ | |
11037 | ||
11038 | static void | |
0b39b52e | 11039 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
11040 | { |
11041 | int just_location = 0; | |
11042 | ||
11043 | if (arg | |
11044 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11045 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11046 | { | |
e9cafbcc | 11047 | arg = skip_spaces (arg); |
06a64a0b TT |
11048 | just_location = 1; |
11049 | } | |
11050 | ||
84f4c1fe | 11051 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11052 | } |
8926118c | 11053 | |
c5aa993b | 11054 | static void |
0b39b52e | 11055 | watch_command (const char *arg, int from_tty) |
c906108c | 11056 | { |
06a64a0b | 11057 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11058 | } |
11059 | ||
8b93c638 | 11060 | void |
f2fc3015 | 11061 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11062 | { |
84f4c1fe | 11063 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11064 | } |
8926118c | 11065 | |
c5aa993b | 11066 | static void |
0b39b52e | 11067 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11068 | { |
06a64a0b | 11069 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11070 | } |
11071 | ||
8b93c638 | 11072 | void |
f2fc3015 | 11073 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11074 | { |
84f4c1fe | 11075 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11076 | } |
8926118c | 11077 | |
c5aa993b | 11078 | static void |
0b39b52e | 11079 | awatch_command (const char *arg, int from_tty) |
c906108c | 11080 | { |
06a64a0b | 11081 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11082 | } |
c906108c | 11083 | \f |
c5aa993b | 11084 | |
cfc31633 PA |
11085 | /* Data for the FSM that manages the until(location)/advance commands |
11086 | in infcmd.c. Here because it uses the mechanisms of | |
11087 | breakpoints. */ | |
c906108c | 11088 | |
cfc31633 | 11089 | struct until_break_fsm |
bfec99b2 | 11090 | { |
cfc31633 PA |
11091 | /* The base class. */ |
11092 | struct thread_fsm thread_fsm; | |
11093 | ||
11094 | /* The thread that as current when the command was executed. */ | |
11095 | int thread; | |
11096 | ||
11097 | /* The breakpoint set at the destination location. */ | |
11098 | struct breakpoint *location_breakpoint; | |
11099 | ||
11100 | /* Breakpoint set at the return address in the caller frame. May be | |
11101 | NULL. */ | |
11102 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11103 | }; |
11104 | ||
8980e177 PA |
11105 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11106 | struct thread_info *thread); | |
11107 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11108 | struct thread_info *thread); | |
cfc31633 PA |
11109 | static enum async_reply_reason |
11110 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11111 | ||
11112 | /* until_break_fsm's vtable. */ | |
11113 | ||
11114 | static struct thread_fsm_ops until_break_fsm_ops = | |
11115 | { | |
11116 | NULL, /* dtor */ | |
11117 | until_break_fsm_clean_up, | |
11118 | until_break_fsm_should_stop, | |
11119 | NULL, /* return_value */ | |
11120 | until_break_fsm_async_reply_reason, | |
11121 | }; | |
11122 | ||
11123 | /* Allocate a new until_break_command_fsm. */ | |
11124 | ||
11125 | static struct until_break_fsm * | |
8980e177 | 11126 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11127 | breakpoint_up &&location_breakpoint, |
11128 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11129 | { |
11130 | struct until_break_fsm *sm; | |
11131 | ||
11132 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11133 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11134 | |
11135 | sm->thread = thread; | |
454dafbd TT |
11136 | sm->location_breakpoint = location_breakpoint.release (); |
11137 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11138 | |
11139 | return sm; | |
11140 | } | |
11141 | ||
11142 | /* Implementation of the 'should_stop' FSM method for the | |
11143 | until(location)/advance commands. */ | |
11144 | ||
11145 | static int | |
8980e177 PA |
11146 | until_break_fsm_should_stop (struct thread_fsm *self, |
11147 | struct thread_info *tp) | |
cfc31633 PA |
11148 | { |
11149 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11150 | |
11151 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11152 | sm->location_breakpoint) != NULL | |
11153 | || (sm->caller_breakpoint != NULL | |
11154 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11155 | sm->caller_breakpoint) != NULL)) | |
11156 | thread_fsm_set_finished (self); | |
11157 | ||
11158 | return 1; | |
11159 | } | |
11160 | ||
11161 | /* Implementation of the 'clean_up' FSM method for the | |
11162 | until(location)/advance commands. */ | |
11163 | ||
c2c6d25f | 11164 | static void |
8980e177 PA |
11165 | until_break_fsm_clean_up (struct thread_fsm *self, |
11166 | struct thread_info *thread) | |
43ff13b4 | 11167 | { |
cfc31633 | 11168 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11169 | |
cfc31633 PA |
11170 | /* Clean up our temporary breakpoints. */ |
11171 | if (sm->location_breakpoint != NULL) | |
11172 | { | |
11173 | delete_breakpoint (sm->location_breakpoint); | |
11174 | sm->location_breakpoint = NULL; | |
11175 | } | |
11176 | if (sm->caller_breakpoint != NULL) | |
11177 | { | |
11178 | delete_breakpoint (sm->caller_breakpoint); | |
11179 | sm->caller_breakpoint = NULL; | |
11180 | } | |
11181 | delete_longjmp_breakpoint (sm->thread); | |
11182 | } | |
11183 | ||
11184 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11185 | until(location)/advance commands. */ | |
11186 | ||
11187 | static enum async_reply_reason | |
11188 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11189 | { | |
11190 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11191 | } |
11192 | ||
c906108c | 11193 | void |
f2fc3015 | 11194 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11195 | { |
8556afb4 PA |
11196 | struct frame_info *frame; |
11197 | struct gdbarch *frame_gdbarch; | |
11198 | struct frame_id stack_frame_id; | |
11199 | struct frame_id caller_frame_id; | |
ffc2605c | 11200 | struct cleanup *old_chain; |
186c406b TT |
11201 | int thread; |
11202 | struct thread_info *tp; | |
cfc31633 | 11203 | struct until_break_fsm *sm; |
c906108c | 11204 | |
70509625 | 11205 | clear_proceed_status (0); |
c906108c SS |
11206 | |
11207 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11208 | this function. */ |
c5aa993b | 11209 | |
ffc2605c | 11210 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11211 | |
6c5b2ebe PA |
11212 | std::vector<symtab_and_line> sals |
11213 | = (last_displayed_sal_is_valid () | |
11214 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11215 | get_last_displayed_symtab (), | |
11216 | get_last_displayed_line ()) | |
11217 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11218 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11219 | |
6c5b2ebe | 11220 | if (sals.size () != 1) |
8a3fe4f8 | 11221 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11222 | |
6c5b2ebe | 11223 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11224 | |
c906108c | 11225 | if (*arg) |
8a3fe4f8 | 11226 | error (_("Junk at end of arguments.")); |
c5aa993b | 11227 | |
c906108c | 11228 | resolve_sal_pc (&sal); |
c5aa993b | 11229 | |
186c406b | 11230 | tp = inferior_thread (); |
5d5658a1 | 11231 | thread = tp->global_num; |
186c406b | 11232 | |
883bc8d1 PA |
11233 | old_chain = make_cleanup (null_cleanup, NULL); |
11234 | ||
8556afb4 PA |
11235 | /* Note linespec handling above invalidates the frame chain. |
11236 | Installing a breakpoint also invalidates the frame chain (as it | |
11237 | may need to switch threads), so do any frame handling before | |
11238 | that. */ | |
11239 | ||
11240 | frame = get_selected_frame (NULL); | |
11241 | frame_gdbarch = get_frame_arch (frame); | |
11242 | stack_frame_id = get_stack_frame_id (frame); | |
11243 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11244 | |
ae66c1fc EZ |
11245 | /* Keep within the current frame, or in frames called by the current |
11246 | one. */ | |
edb3359d | 11247 | |
454dafbd | 11248 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11249 | if (frame_id_p (caller_frame_id)) |
c906108c | 11250 | { |
883bc8d1 | 11251 | struct symtab_and_line sal2; |
cfc31633 | 11252 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11253 | |
11254 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11255 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11256 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11257 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11258 | sal2, | |
11259 | caller_frame_id, | |
11260 | bp_until); | |
186c406b | 11261 | |
883bc8d1 | 11262 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11263 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11264 | } |
c5aa993b | 11265 | |
c70a6932 JK |
11266 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11267 | frame = NULL; | |
11268 | ||
454dafbd | 11269 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11270 | if (anywhere) |
11271 | /* If the user told us to continue until a specified location, | |
11272 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11273 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11274 | null_frame_id, bp_until); | |
883bc8d1 PA |
11275 | else |
11276 | /* Otherwise, specify the selected frame, because we want to stop | |
11277 | only at the very same frame. */ | |
cfc31633 PA |
11278 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11279 | stack_frame_id, bp_until); | |
883bc8d1 | 11280 | |
8980e177 | 11281 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11282 | std::move (location_breakpoint), |
11283 | std::move (caller_breakpoint)); | |
cfc31633 | 11284 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11285 | |
cfc31633 | 11286 | discard_cleanups (old_chain); |
f107f563 | 11287 | |
cfc31633 | 11288 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11289 | } |
ae66c1fc | 11290 | |
c906108c SS |
11291 | /* This function attempts to parse an optional "if <cond>" clause |
11292 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11293 | |
c906108c SS |
11294 | Else, it returns a pointer to the condition string. (It does not |
11295 | attempt to evaluate the string against a particular block.) And, | |
11296 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11297 | if clause in the arg string. */ |
53a5351d | 11298 | |
63160a43 PA |
11299 | const char * |
11300 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11301 | { |
63160a43 | 11302 | const char *cond_string; |
c5aa993b JM |
11303 | |
11304 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11305 | return NULL; |
c5aa993b | 11306 | |
4a64f543 | 11307 | /* Skip the "if" keyword. */ |
c906108c | 11308 | (*arg) += 2; |
c5aa993b | 11309 | |
c906108c | 11310 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11311 | condition string. */ |
f1735a53 | 11312 | *arg = skip_spaces (*arg); |
c906108c | 11313 | cond_string = *arg; |
c5aa993b | 11314 | |
4a64f543 MS |
11315 | /* Assume that the condition occupies the remainder of the arg |
11316 | string. */ | |
c906108c | 11317 | (*arg) += strlen (cond_string); |
c5aa993b | 11318 | |
c906108c SS |
11319 | return cond_string; |
11320 | } | |
c5aa993b | 11321 | |
c906108c SS |
11322 | /* Commands to deal with catching events, such as signals, exceptions, |
11323 | process start/exit, etc. */ | |
c5aa993b JM |
11324 | |
11325 | typedef enum | |
11326 | { | |
44feb3ce TT |
11327 | catch_fork_temporary, catch_vfork_temporary, |
11328 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11329 | } |
11330 | catch_fork_kind; | |
11331 | ||
c906108c | 11332 | static void |
63160a43 | 11333 | catch_fork_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11334 | struct cmd_list_element *command) |
c906108c | 11335 | { |
63160a43 | 11336 | const char *arg = arg_entry; |
a6d9a66e | 11337 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11338 | const char *cond_string = NULL; |
44feb3ce TT |
11339 | catch_fork_kind fork_kind; |
11340 | int tempflag; | |
11341 | ||
11342 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11343 | tempflag = (fork_kind == catch_fork_temporary | |
11344 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11345 | |
44feb3ce TT |
11346 | if (!arg) |
11347 | arg = ""; | |
f1735a53 | 11348 | arg = skip_spaces (arg); |
c5aa993b | 11349 | |
c906108c | 11350 | /* The allowed syntax is: |
c5aa993b JM |
11351 | catch [v]fork |
11352 | catch [v]fork if <cond> | |
11353 | ||
4a64f543 | 11354 | First, check if there's an if clause. */ |
c906108c | 11355 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11356 | |
c906108c | 11357 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11358 | error (_("Junk at end of arguments.")); |
c5aa993b | 11359 | |
c906108c | 11360 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11361 | and enable reporting of such events. */ |
c5aa993b JM |
11362 | switch (fork_kind) |
11363 | { | |
44feb3ce TT |
11364 | case catch_fork_temporary: |
11365 | case catch_fork_permanent: | |
a6d9a66e | 11366 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11367 | &catch_fork_breakpoint_ops); |
c906108c | 11368 | break; |
44feb3ce TT |
11369 | case catch_vfork_temporary: |
11370 | case catch_vfork_permanent: | |
a6d9a66e | 11371 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11372 | &catch_vfork_breakpoint_ops); |
c906108c | 11373 | break; |
c5aa993b | 11374 | default: |
8a3fe4f8 | 11375 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11376 | break; |
c5aa993b | 11377 | } |
c906108c SS |
11378 | } |
11379 | ||
11380 | static void | |
63160a43 | 11381 | catch_exec_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11382 | struct cmd_list_element *command) |
c906108c | 11383 | { |
63160a43 | 11384 | const char *arg = arg_entry; |
a6d9a66e | 11385 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11386 | int tempflag; |
63160a43 | 11387 | const char *cond_string = NULL; |
c906108c | 11388 | |
44feb3ce TT |
11389 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11390 | ||
11391 | if (!arg) | |
11392 | arg = ""; | |
f1735a53 | 11393 | arg = skip_spaces (arg); |
c906108c SS |
11394 | |
11395 | /* The allowed syntax is: | |
c5aa993b JM |
11396 | catch exec |
11397 | catch exec if <cond> | |
c906108c | 11398 | |
4a64f543 | 11399 | First, check if there's an if clause. */ |
c906108c SS |
11400 | cond_string = ep_parse_optional_if_clause (&arg); |
11401 | ||
11402 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11403 | error (_("Junk at end of arguments.")); |
c906108c | 11404 | |
b270e6f9 TT |
11405 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11406 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11407 | &catch_exec_breakpoint_ops); |
11408 | c->exec_pathname = NULL; | |
11409 | ||
b270e6f9 | 11410 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11411 | } |
c5aa993b | 11412 | |
9ac4176b | 11413 | void |
28010a5d PA |
11414 | init_ada_exception_breakpoint (struct breakpoint *b, |
11415 | struct gdbarch *gdbarch, | |
11416 | struct symtab_and_line sal, | |
f2fc3015 | 11417 | const char *addr_string, |
c0a91b2b | 11418 | const struct breakpoint_ops *ops, |
28010a5d | 11419 | int tempflag, |
349774ef | 11420 | int enabled, |
28010a5d | 11421 | int from_tty) |
f7f9143b | 11422 | { |
f7f9143b JB |
11423 | if (from_tty) |
11424 | { | |
5af949e3 UW |
11425 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11426 | if (!loc_gdbarch) | |
11427 | loc_gdbarch = gdbarch; | |
11428 | ||
6c95b8df PA |
11429 | describe_other_breakpoints (loc_gdbarch, |
11430 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11431 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11432 | version for exception catchpoints, because two catchpoints | |
11433 | used for different exception names will use the same address. | |
11434 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11435 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11436 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11437 | the user what type of catchpoint it is. The above is good |
11438 | enough for now, though. */ | |
11439 | } | |
11440 | ||
28010a5d | 11441 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11442 | |
349774ef | 11443 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11444 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11445 | b->location = string_to_event_location (&addr_string, |
11446 | language_def (language_ada)); | |
f7f9143b | 11447 | b->language = language_ada; |
f7f9143b JB |
11448 | } |
11449 | ||
c906108c | 11450 | static void |
981a3fb3 | 11451 | catch_command (const char *arg, int from_tty) |
c906108c | 11452 | { |
44feb3ce | 11453 | error (_("Catch requires an event name.")); |
c906108c SS |
11454 | } |
11455 | \f | |
11456 | ||
11457 | static void | |
981a3fb3 | 11458 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11459 | { |
44feb3ce | 11460 | error (_("Catch requires an event name.")); |
c906108c SS |
11461 | } |
11462 | ||
81b1e71c | 11463 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11464 | |
11465 | static int | |
81b1e71c | 11466 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11467 | { |
81b1e71c TT |
11468 | uintptr_t ua = (uintptr_t) a; |
11469 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11470 | |
81b1e71c | 11471 | if (a->number < b->number) |
8a2c437b | 11472 | return -1; |
81b1e71c | 11473 | else if (a->number > b->number) |
8a2c437b TT |
11474 | return 1; |
11475 | ||
11476 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11477 | the number 0. */ | |
11478 | if (ua < ub) | |
11479 | return -1; | |
94b0e70d | 11480 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11481 | } |
11482 | ||
80f8a6eb | 11483 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11484 | |
11485 | static void | |
0b39b52e | 11486 | clear_command (const char *arg, int from_tty) |
c906108c | 11487 | { |
81b1e71c | 11488 | struct breakpoint *b; |
c906108c | 11489 | int default_match; |
c906108c SS |
11490 | int i; |
11491 | ||
6c5b2ebe PA |
11492 | std::vector<symtab_and_line> decoded_sals; |
11493 | symtab_and_line last_sal; | |
11494 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11495 | if (arg) |
11496 | { | |
6c5b2ebe PA |
11497 | decoded_sals |
11498 | = decode_line_with_current_source (arg, | |
11499 | (DECODE_LINE_FUNFIRSTLINE | |
11500 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11501 | default_match = 0; |
6c5b2ebe | 11502 | sals = decoded_sals; |
c906108c SS |
11503 | } |
11504 | else | |
11505 | { | |
1bfeeb0f JL |
11506 | /* Set sal's line, symtab, pc, and pspace to the values |
11507 | corresponding to the last call to print_frame_info. If the | |
11508 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11509 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11510 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11511 | error (_("No source file specified.")); |
c906108c | 11512 | |
c906108c | 11513 | default_match = 1; |
6c5b2ebe | 11514 | sals = last_sal; |
c906108c SS |
11515 | } |
11516 | ||
4a64f543 MS |
11517 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11518 | seems, because all existing breakpoints typically have both | |
11519 | file/line and pc set. So, if clear is given file/line, we can | |
11520 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11521 | |
11522 | We only support clearing given the address explicitly | |
11523 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11524 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11525 | due to optimization, all in one block. |
4a64f543 MS |
11526 | |
11527 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11528 | PC corresponding to the same file:line, the breakpoint won't |
11529 | be cleared. We probably can still clear the breakpoint, but | |
11530 | since the other PC value is never presented to user, user | |
11531 | can only find it by guessing, and it does not seem important | |
11532 | to support that. */ | |
11533 | ||
4a64f543 MS |
11534 | /* For each line spec given, delete bps which correspond to it. Do |
11535 | it in two passes, solely to preserve the current behavior that | |
11536 | from_tty is forced true if we delete more than one | |
11537 | breakpoint. */ | |
c906108c | 11538 | |
81b1e71c | 11539 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11540 | for (const auto &sal : sals) |
c906108c | 11541 | { |
05cba821 JK |
11542 | const char *sal_fullname; |
11543 | ||
c906108c | 11544 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11545 | If line given (pc == 0), clear all bpts on specified line. |
11546 | If defaulting, clear all bpts on default line | |
c906108c | 11547 | or at default pc. |
c5aa993b JM |
11548 | |
11549 | defaulting sal.pc != 0 tests to do | |
11550 | ||
11551 | 0 1 pc | |
11552 | 1 1 pc _and_ line | |
11553 | 0 0 line | |
11554 | 1 0 <can't happen> */ | |
c906108c | 11555 | |
05cba821 JK |
11556 | sal_fullname = (sal.symtab == NULL |
11557 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11558 | |
4a64f543 | 11559 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11560 | ALL_BREAKPOINTS (b) |
c5aa993b | 11561 | { |
0d381245 | 11562 | int match = 0; |
4a64f543 | 11563 | /* Are we going to delete b? */ |
cc60f2e3 | 11564 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11565 | { |
11566 | struct bp_location *loc = b->loc; | |
11567 | for (; loc; loc = loc->next) | |
11568 | { | |
f8eba3c6 TT |
11569 | /* If the user specified file:line, don't allow a PC |
11570 | match. This matches historical gdb behavior. */ | |
11571 | int pc_match = (!sal.explicit_line | |
11572 | && sal.pc | |
11573 | && (loc->pspace == sal.pspace) | |
11574 | && (loc->address == sal.pc) | |
11575 | && (!section_is_overlay (loc->section) | |
11576 | || loc->section == sal.section)); | |
4aac40c8 TT |
11577 | int line_match = 0; |
11578 | ||
11579 | if ((default_match || sal.explicit_line) | |
2f202fde | 11580 | && loc->symtab != NULL |
05cba821 | 11581 | && sal_fullname != NULL |
4aac40c8 | 11582 | && sal.pspace == loc->pspace |
05cba821 JK |
11583 | && loc->line_number == sal.line |
11584 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11585 | sal_fullname) == 0) | |
11586 | line_match = 1; | |
4aac40c8 | 11587 | |
0d381245 VP |
11588 | if (pc_match || line_match) |
11589 | { | |
11590 | match = 1; | |
11591 | break; | |
11592 | } | |
11593 | } | |
11594 | } | |
11595 | ||
11596 | if (match) | |
81b1e71c | 11597 | found.push_back (b); |
c906108c | 11598 | } |
80f8a6eb | 11599 | } |
8a2c437b | 11600 | |
80f8a6eb | 11601 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11602 | if (found.empty ()) |
80f8a6eb MS |
11603 | { |
11604 | if (arg) | |
8a3fe4f8 | 11605 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11606 | else |
8a3fe4f8 | 11607 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11608 | } |
c906108c | 11609 | |
8a2c437b | 11610 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11611 | std::sort (found.begin (), found.end (), |
11612 | [] (const breakpoint *a, const breakpoint *b) | |
11613 | { | |
11614 | return compare_breakpoints (a, b) < 0; | |
11615 | }); | |
11616 | found.erase (std::unique (found.begin (), found.end (), | |
11617 | [] (const breakpoint *a, const breakpoint *b) | |
11618 | { | |
11619 | return compare_breakpoints (a, b) == 0; | |
11620 | }), | |
11621 | found.end ()); | |
8a2c437b | 11622 | |
81b1e71c | 11623 | if (found.size () > 1) |
4a64f543 | 11624 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11625 | if (from_tty) |
a3f17187 | 11626 | { |
81b1e71c | 11627 | if (found.size () == 1) |
a3f17187 AC |
11628 | printf_unfiltered (_("Deleted breakpoint ")); |
11629 | else | |
11630 | printf_unfiltered (_("Deleted breakpoints ")); | |
11631 | } | |
d6e956e5 | 11632 | |
81b1e71c | 11633 | for (breakpoint *iter : found) |
80f8a6eb | 11634 | { |
c5aa993b | 11635 | if (from_tty) |
81b1e71c TT |
11636 | printf_unfiltered ("%d ", iter->number); |
11637 | delete_breakpoint (iter); | |
c906108c | 11638 | } |
80f8a6eb MS |
11639 | if (from_tty) |
11640 | putchar_unfiltered ('\n'); | |
c906108c SS |
11641 | } |
11642 | \f | |
11643 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11644 | all breakpoints that are marked for deletion, whether hit or not. | |
11645 | This is called after any breakpoint is hit, or after errors. */ | |
11646 | ||
11647 | void | |
fba45db2 | 11648 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11649 | { |
35df4500 | 11650 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11651 | |
11652 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11653 | if (bs->breakpoint_at |
11654 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11655 | && bs->stop) |
f431efe5 | 11656 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11657 | |
35df4500 | 11658 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11659 | { |
b5de0fa7 | 11660 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11661 | delete_breakpoint (b); |
11662 | } | |
c906108c SS |
11663 | } |
11664 | ||
4a64f543 MS |
11665 | /* A comparison function for bp_location AP and BP being interfaced to |
11666 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11667 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11668 | secondarily by ordering first permanent elements and |
4a64f543 | 11669 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11670 | qsort being an unstable algorithm. */ |
876fa593 JK |
11671 | |
11672 | static int | |
f5336ca5 | 11673 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11674 | { |
9a3c8263 SM |
11675 | const struct bp_location *a = *(const struct bp_location **) ap; |
11676 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11677 | |
11678 | if (a->address != b->address) | |
11679 | return (a->address > b->address) - (a->address < b->address); | |
11680 | ||
dea2aa5f LM |
11681 | /* Sort locations at the same address by their pspace number, keeping |
11682 | locations of the same inferior (in a multi-inferior environment) | |
11683 | grouped. */ | |
11684 | ||
11685 | if (a->pspace->num != b->pspace->num) | |
11686 | return ((a->pspace->num > b->pspace->num) | |
11687 | - (a->pspace->num < b->pspace->num)); | |
11688 | ||
876fa593 | 11689 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11690 | if (a->permanent != b->permanent) |
11691 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11692 | |
c56a97f9 JK |
11693 | /* Make the internal GDB representation stable across GDB runs |
11694 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11695 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11696 | |
11697 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11698 | return ((a->owner->number > b->owner->number) |
11699 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11700 | |
11701 | return (a > b) - (a < b); | |
11702 | } | |
11703 | ||
f5336ca5 PA |
11704 | /* Set bp_locations_placed_address_before_address_max and |
11705 | bp_locations_shadow_len_after_address_max according to the current | |
11706 | content of the bp_locations array. */ | |
f7545552 TT |
11707 | |
11708 | static void | |
f5336ca5 | 11709 | bp_locations_target_extensions_update (void) |
f7545552 | 11710 | { |
876fa593 JK |
11711 | struct bp_location *bl, **blp_tmp; |
11712 | ||
f5336ca5 PA |
11713 | bp_locations_placed_address_before_address_max = 0; |
11714 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11715 | |
11716 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11717 | { | |
11718 | CORE_ADDR start, end, addr; | |
11719 | ||
11720 | if (!bp_location_has_shadow (bl)) | |
11721 | continue; | |
11722 | ||
11723 | start = bl->target_info.placed_address; | |
11724 | end = start + bl->target_info.shadow_len; | |
11725 | ||
11726 | gdb_assert (bl->address >= start); | |
11727 | addr = bl->address - start; | |
f5336ca5 PA |
11728 | if (addr > bp_locations_placed_address_before_address_max) |
11729 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11730 | |
11731 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11732 | ||
11733 | gdb_assert (bl->address < end); | |
11734 | addr = end - bl->address; | |
f5336ca5 PA |
11735 | if (addr > bp_locations_shadow_len_after_address_max) |
11736 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11737 | } |
f7545552 TT |
11738 | } |
11739 | ||
1e4d1764 YQ |
11740 | /* Download tracepoint locations if they haven't been. */ |
11741 | ||
11742 | static void | |
11743 | download_tracepoint_locations (void) | |
11744 | { | |
7ed2c994 | 11745 | struct breakpoint *b; |
dd2e65cc | 11746 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11747 | |
5ed8105e | 11748 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11749 | |
7ed2c994 | 11750 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11751 | { |
7ed2c994 | 11752 | struct bp_location *bl; |
1e4d1764 | 11753 | struct tracepoint *t; |
f2a8bc8a | 11754 | int bp_location_downloaded = 0; |
1e4d1764 | 11755 | |
7ed2c994 | 11756 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11757 | ? !may_insert_fast_tracepoints |
11758 | : !may_insert_tracepoints)) | |
11759 | continue; | |
11760 | ||
dd2e65cc YQ |
11761 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11762 | { | |
11763 | if (target_can_download_tracepoint ()) | |
11764 | can_download_tracepoint = TRIBOOL_TRUE; | |
11765 | else | |
11766 | can_download_tracepoint = TRIBOOL_FALSE; | |
11767 | } | |
11768 | ||
11769 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11770 | break; | |
11771 | ||
7ed2c994 YQ |
11772 | for (bl = b->loc; bl; bl = bl->next) |
11773 | { | |
11774 | /* In tracepoint, locations are _never_ duplicated, so | |
11775 | should_be_inserted is equivalent to | |
11776 | unduplicated_should_be_inserted. */ | |
11777 | if (!should_be_inserted (bl) || bl->inserted) | |
11778 | continue; | |
1e4d1764 | 11779 | |
7ed2c994 | 11780 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11781 | |
7ed2c994 | 11782 | target_download_tracepoint (bl); |
1e4d1764 | 11783 | |
7ed2c994 | 11784 | bl->inserted = 1; |
f2a8bc8a | 11785 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11786 | } |
11787 | t = (struct tracepoint *) b; | |
11788 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11789 | if (bp_location_downloaded) |
11790 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11791 | } |
1e4d1764 YQ |
11792 | } |
11793 | ||
934709f0 PW |
11794 | /* Swap the insertion/duplication state between two locations. */ |
11795 | ||
11796 | static void | |
11797 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11798 | { | |
11799 | const int left_inserted = left->inserted; | |
11800 | const int left_duplicate = left->duplicate; | |
b775012e | 11801 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11802 | const struct bp_target_info left_target_info = left->target_info; |
11803 | ||
1e4d1764 YQ |
11804 | /* Locations of tracepoints can never be duplicated. */ |
11805 | if (is_tracepoint (left->owner)) | |
11806 | gdb_assert (!left->duplicate); | |
11807 | if (is_tracepoint (right->owner)) | |
11808 | gdb_assert (!right->duplicate); | |
11809 | ||
934709f0 PW |
11810 | left->inserted = right->inserted; |
11811 | left->duplicate = right->duplicate; | |
b775012e | 11812 | left->needs_update = right->needs_update; |
934709f0 PW |
11813 | left->target_info = right->target_info; |
11814 | right->inserted = left_inserted; | |
11815 | right->duplicate = left_duplicate; | |
b775012e | 11816 | right->needs_update = left_needs_update; |
934709f0 PW |
11817 | right->target_info = left_target_info; |
11818 | } | |
11819 | ||
b775012e LM |
11820 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11821 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11822 | conditions on the target's side. Such conditions need to be updated on | |
11823 | the target. */ | |
11824 | ||
11825 | static void | |
11826 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11827 | { | |
11828 | struct bp_location **locp = NULL, **loc2p; | |
11829 | struct bp_location *loc; | |
11830 | CORE_ADDR address = 0; | |
11831 | int pspace_num; | |
11832 | ||
11833 | address = bl->address; | |
11834 | pspace_num = bl->pspace->num; | |
11835 | ||
11836 | /* This is only meaningful if the target is | |
11837 | evaluating conditions and if the user has | |
11838 | opted for condition evaluation on the target's | |
11839 | side. */ | |
11840 | if (gdb_evaluates_breakpoint_condition_p () | |
11841 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11842 | return; | |
11843 | ||
11844 | /* Flag all breakpoint locations with this address and | |
11845 | the same program space as the location | |
11846 | as "its condition has changed". We need to | |
11847 | update the conditions on the target's side. */ | |
11848 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11849 | { | |
11850 | loc = *loc2p; | |
11851 | ||
11852 | if (!is_breakpoint (loc->owner) | |
11853 | || pspace_num != loc->pspace->num) | |
11854 | continue; | |
11855 | ||
11856 | /* Flag the location appropriately. We use a different state to | |
11857 | let everyone know that we already updated the set of locations | |
11858 | with addr bl->address and program space bl->pspace. This is so | |
11859 | we don't have to keep calling these functions just to mark locations | |
11860 | that have already been marked. */ | |
11861 | loc->condition_changed = condition_updated; | |
11862 | ||
11863 | /* Free the agent expression bytecode as well. We will compute | |
11864 | it later on. */ | |
833177a4 | 11865 | loc->cond_bytecode.reset (); |
b775012e LM |
11866 | } |
11867 | } | |
44702360 PA |
11868 | /* Called whether new breakpoints are created, or existing breakpoints |
11869 | deleted, to update the global location list and recompute which | |
11870 | locations are duplicate of which. | |
b775012e | 11871 | |
04086b45 PA |
11872 | The INSERT_MODE flag determines whether locations may not, may, or |
11873 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11874 | info. */ | |
b60e7edf | 11875 | |
0d381245 | 11876 | static void |
44702360 | 11877 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11878 | { |
74960c60 | 11879 | struct breakpoint *b; |
876fa593 | 11880 | struct bp_location **locp, *loc; |
b775012e LM |
11881 | /* Last breakpoint location address that was marked for update. */ |
11882 | CORE_ADDR last_addr = 0; | |
11883 | /* Last breakpoint location program space that was marked for update. */ | |
11884 | int last_pspace_num = -1; | |
f7545552 | 11885 | |
2d134ed3 PA |
11886 | /* Used in the duplicates detection below. When iterating over all |
11887 | bp_locations, points to the first bp_location of a given address. | |
11888 | Breakpoints and watchpoints of different types are never | |
11889 | duplicates of each other. Keep one pointer for each type of | |
11890 | breakpoint/watchpoint, so we only need to loop over all locations | |
11891 | once. */ | |
11892 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11893 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11894 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11895 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11896 | |
f5336ca5 PA |
11897 | /* Saved former bp_locations array which we compare against the newly |
11898 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11899 | struct bp_location **old_locp; |
f5336ca5 | 11900 | unsigned old_locations_count; |
81b1e71c | 11901 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11902 | |
f5336ca5 PA |
11903 | old_locations_count = bp_locations_count; |
11904 | bp_locations = NULL; | |
11905 | bp_locations_count = 0; | |
0d381245 | 11906 | |
74960c60 | 11907 | ALL_BREAKPOINTS (b) |
876fa593 | 11908 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11909 | bp_locations_count++; |
876fa593 | 11910 | |
f5336ca5 PA |
11911 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11912 | locp = bp_locations; | |
876fa593 JK |
11913 | ALL_BREAKPOINTS (b) |
11914 | for (loc = b->loc; loc; loc = loc->next) | |
11915 | *locp++ = loc; | |
f5336ca5 PA |
11916 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11917 | bp_locations_compare); | |
876fa593 | 11918 | |
f5336ca5 | 11919 | bp_locations_target_extensions_update (); |
74960c60 | 11920 | |
4a64f543 MS |
11921 | /* Identify bp_location instances that are no longer present in the |
11922 | new list, and therefore should be freed. Note that it's not | |
11923 | necessary that those locations should be removed from inferior -- | |
11924 | if there's another location at the same address (previously | |
11925 | marked as duplicate), we don't need to remove/insert the | |
11926 | location. | |
876fa593 | 11927 | |
4a64f543 MS |
11928 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11929 | and former bp_location array state respectively. */ | |
876fa593 | 11930 | |
f5336ca5 | 11931 | locp = bp_locations; |
81b1e71c TT |
11932 | for (old_locp = old_locations.get (); |
11933 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11934 | old_locp++) |
74960c60 | 11935 | { |
876fa593 | 11936 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11937 | struct bp_location **loc2p; |
876fa593 | 11938 | |
e5dd4106 | 11939 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11940 | not, we have to free it. */ |
c7d46a38 | 11941 | int found_object = 0; |
20874c92 VP |
11942 | /* Tells if the location should remain inserted in the target. */ |
11943 | int keep_in_target = 0; | |
11944 | int removed = 0; | |
876fa593 | 11945 | |
4a64f543 MS |
11946 | /* Skip LOCP entries which will definitely never be needed. |
11947 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11948 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11949 | && (*locp)->address < old_loc->address) |
876fa593 | 11950 | locp++; |
c7d46a38 PA |
11951 | |
11952 | for (loc2p = locp; | |
f5336ca5 | 11953 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11954 | && (*loc2p)->address == old_loc->address); |
11955 | loc2p++) | |
11956 | { | |
b775012e LM |
11957 | /* Check if this is a new/duplicated location or a duplicated |
11958 | location that had its condition modified. If so, we want to send | |
11959 | its condition to the target if evaluation of conditions is taking | |
11960 | place there. */ | |
11961 | if ((*loc2p)->condition_changed == condition_modified | |
11962 | && (last_addr != old_loc->address | |
11963 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11964 | { |
b775012e LM |
11965 | force_breakpoint_reinsertion (*loc2p); |
11966 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11967 | } |
b775012e LM |
11968 | |
11969 | if (*loc2p == old_loc) | |
11970 | found_object = 1; | |
c7d46a38 | 11971 | } |
74960c60 | 11972 | |
b775012e LM |
11973 | /* We have already handled this address, update it so that we don't |
11974 | have to go through updates again. */ | |
11975 | last_addr = old_loc->address; | |
11976 | ||
11977 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11978 | if (!found_object) | |
11979 | force_breakpoint_reinsertion (old_loc); | |
11980 | ||
4a64f543 MS |
11981 | /* If this location is no longer present, and inserted, look if |
11982 | there's maybe a new location at the same address. If so, | |
11983 | mark that one inserted, and don't remove this one. This is | |
11984 | needed so that we don't have a time window where a breakpoint | |
11985 | at certain location is not inserted. */ | |
74960c60 | 11986 | |
876fa593 | 11987 | if (old_loc->inserted) |
0d381245 | 11988 | { |
4a64f543 MS |
11989 | /* If the location is inserted now, we might have to remove |
11990 | it. */ | |
74960c60 | 11991 | |
876fa593 | 11992 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11993 | { |
4a64f543 MS |
11994 | /* The location is still present in the location list, |
11995 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11996 | keep_in_target = 1; |
74960c60 VP |
11997 | } |
11998 | else | |
11999 | { | |
b775012e LM |
12000 | /* This location still exists, but it won't be kept in the |
12001 | target since it may have been disabled. We proceed to | |
12002 | remove its target-side condition. */ | |
12003 | ||
4a64f543 MS |
12004 | /* The location is either no longer present, or got |
12005 | disabled. See if there's another location at the | |
12006 | same address, in which case we don't need to remove | |
12007 | this one from the target. */ | |
876fa593 | 12008 | |
2bdf28a0 | 12009 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12010 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12011 | { | |
876fa593 | 12012 | for (loc2p = locp; |
f5336ca5 | 12013 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12014 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12015 | loc2p++) |
12016 | { | |
12017 | struct bp_location *loc2 = *loc2p; | |
12018 | ||
2d134ed3 | 12019 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12020 | { |
85d721b8 PA |
12021 | /* Read watchpoint locations are switched to |
12022 | access watchpoints, if the former are not | |
12023 | supported, but the latter are. */ | |
12024 | if (is_hardware_watchpoint (old_loc->owner)) | |
12025 | { | |
12026 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12027 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12028 | } | |
12029 | ||
934709f0 PW |
12030 | /* loc2 is a duplicated location. We need to check |
12031 | if it should be inserted in case it will be | |
12032 | unduplicated. */ | |
12033 | if (loc2 != old_loc | |
12034 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12035 | { |
934709f0 | 12036 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12037 | keep_in_target = 1; |
12038 | break; | |
12039 | } | |
876fa593 JK |
12040 | } |
12041 | } | |
12042 | } | |
74960c60 VP |
12043 | } |
12044 | ||
20874c92 VP |
12045 | if (!keep_in_target) |
12046 | { | |
834c0d03 | 12047 | if (remove_breakpoint (old_loc)) |
20874c92 | 12048 | { |
4a64f543 MS |
12049 | /* This is just about all we can do. We could keep |
12050 | this location on the global list, and try to | |
12051 | remove it next time, but there's no particular | |
12052 | reason why we will succeed next time. | |
20874c92 | 12053 | |
4a64f543 MS |
12054 | Note that at this point, old_loc->owner is still |
12055 | valid, as delete_breakpoint frees the breakpoint | |
12056 | only after calling us. */ | |
3e43a32a MS |
12057 | printf_filtered (_("warning: Error removing " |
12058 | "breakpoint %d\n"), | |
876fa593 | 12059 | old_loc->owner->number); |
20874c92 VP |
12060 | } |
12061 | removed = 1; | |
12062 | } | |
0d381245 | 12063 | } |
74960c60 VP |
12064 | |
12065 | if (!found_object) | |
1c5cfe86 | 12066 | { |
fbea99ea | 12067 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12068 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12069 | { |
db82e815 PA |
12070 | /* This location was removed from the target. In |
12071 | non-stop mode, a race condition is possible where | |
12072 | we've removed a breakpoint, but stop events for that | |
12073 | breakpoint are already queued and will arrive later. | |
12074 | We apply an heuristic to be able to distinguish such | |
12075 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12076 | breakpoint location for a bit, and will retire it | |
12077 | after we see some number of events. The theory here | |
12078 | is that reporting of events should, "on the average", | |
12079 | be fair, so after a while we'll see events from all | |
12080 | threads that have anything of interest, and no longer | |
12081 | need to keep this breakpoint location around. We | |
12082 | don't hold locations forever so to reduce chances of | |
12083 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12084 | SIGTRAP. | |
12085 | ||
12086 | The heuristic failing can be disastrous on | |
12087 | decr_pc_after_break targets. | |
12088 | ||
12089 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12090 | if we fail to recognize a late breakpoint SIGTRAP, | |
12091 | because events_till_retirement has reached 0 too | |
12092 | soon, we'll fail to do the PC adjustment, and report | |
12093 | a random SIGTRAP to the user. When the user resumes | |
12094 | the inferior, it will most likely immediately crash | |
2dec564e | 12095 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12096 | corrupted, because of being resumed e.g., in the |
12097 | middle of a multi-byte instruction, or skipped a | |
12098 | one-byte instruction. This was actually seen happen | |
12099 | on native x86-linux, and should be less rare on | |
12100 | targets that do not support new thread events, like | |
12101 | remote, due to the heuristic depending on | |
12102 | thread_count. | |
12103 | ||
12104 | Mistaking a random SIGTRAP for a breakpoint trap | |
12105 | causes similar symptoms (PC adjustment applied when | |
12106 | it shouldn't), but then again, playing with SIGTRAPs | |
12107 | behind the debugger's back is asking for trouble. | |
12108 | ||
12109 | Since hardware watchpoint traps are always | |
12110 | distinguishable from other traps, so we don't need to | |
12111 | apply keep hardware watchpoint moribund locations | |
12112 | around. We simply always ignore hardware watchpoint | |
12113 | traps we can no longer explain. */ | |
12114 | ||
876fa593 JK |
12115 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12116 | old_loc->owner = NULL; | |
20874c92 | 12117 | |
876fa593 | 12118 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12119 | } |
12120 | else | |
f431efe5 PA |
12121 | { |
12122 | old_loc->owner = NULL; | |
12123 | decref_bp_location (&old_loc); | |
12124 | } | |
20874c92 | 12125 | } |
74960c60 | 12126 | } |
1c5cfe86 | 12127 | |
348d480f PA |
12128 | /* Rescan breakpoints at the same address and section, marking the |
12129 | first one as "first" and any others as "duplicates". This is so | |
12130 | that the bpt instruction is only inserted once. If we have a | |
12131 | permanent breakpoint at the same place as BPT, make that one the | |
12132 | official one, and the rest as duplicates. Permanent breakpoints | |
12133 | are sorted first for the same address. | |
12134 | ||
12135 | Do the same for hardware watchpoints, but also considering the | |
12136 | watchpoint's type (regular/access/read) and length. */ | |
12137 | ||
12138 | bp_loc_first = NULL; | |
12139 | wp_loc_first = NULL; | |
12140 | awp_loc_first = NULL; | |
12141 | rwp_loc_first = NULL; | |
12142 | ALL_BP_LOCATIONS (loc, locp) | |
12143 | { | |
12144 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12145 | non-NULL. */ | |
348d480f | 12146 | struct bp_location **loc_first_p; |
d3fbdd86 | 12147 | b = loc->owner; |
348d480f | 12148 | |
6f380991 | 12149 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12150 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12151 | /* Don't detect duplicate for tracepoint locations because they are |
12152 | never duplicated. See the comments in field `duplicate' of | |
12153 | `struct bp_location'. */ | |
348d480f | 12154 | || is_tracepoint (b)) |
b775012e LM |
12155 | { |
12156 | /* Clear the condition modification flag. */ | |
12157 | loc->condition_changed = condition_unchanged; | |
12158 | continue; | |
12159 | } | |
348d480f | 12160 | |
348d480f PA |
12161 | if (b->type == bp_hardware_watchpoint) |
12162 | loc_first_p = &wp_loc_first; | |
12163 | else if (b->type == bp_read_watchpoint) | |
12164 | loc_first_p = &rwp_loc_first; | |
12165 | else if (b->type == bp_access_watchpoint) | |
12166 | loc_first_p = &awp_loc_first; | |
12167 | else | |
12168 | loc_first_p = &bp_loc_first; | |
12169 | ||
12170 | if (*loc_first_p == NULL | |
12171 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12172 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12173 | { | |
12174 | *loc_first_p = loc; | |
12175 | loc->duplicate = 0; | |
b775012e LM |
12176 | |
12177 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12178 | { | |
12179 | loc->needs_update = 1; | |
12180 | /* Clear the condition modification flag. */ | |
12181 | loc->condition_changed = condition_unchanged; | |
12182 | } | |
348d480f PA |
12183 | continue; |
12184 | } | |
12185 | ||
934709f0 PW |
12186 | |
12187 | /* This and the above ensure the invariant that the first location | |
12188 | is not duplicated, and is the inserted one. | |
12189 | All following are marked as duplicated, and are not inserted. */ | |
12190 | if (loc->inserted) | |
12191 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12192 | loc->duplicate = 1; |
12193 | ||
b775012e LM |
12194 | /* Clear the condition modification flag. */ |
12195 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12196 | } |
12197 | ||
a25a5a45 | 12198 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12199 | { |
04086b45 | 12200 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12201 | insert_breakpoint_locations (); |
12202 | else | |
12203 | { | |
44702360 PA |
12204 | /* Even though the caller told us to not insert new |
12205 | locations, we may still need to update conditions on the | |
12206 | target's side of breakpoints that were already inserted | |
12207 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12208 | only update conditions for locations that are marked |
12209 | "needs_update". */ | |
12210 | update_inserted_breakpoint_locations (); | |
12211 | } | |
12212 | } | |
348d480f | 12213 | |
04086b45 | 12214 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12215 | download_tracepoint_locations (); |
348d480f PA |
12216 | } |
12217 | ||
12218 | void | |
12219 | breakpoint_retire_moribund (void) | |
12220 | { | |
12221 | struct bp_location *loc; | |
12222 | int ix; | |
12223 | ||
12224 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12225 | if (--(loc->events_till_retirement) == 0) | |
12226 | { | |
12227 | decref_bp_location (&loc); | |
12228 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12229 | --ix; | |
12230 | } | |
12231 | } | |
12232 | ||
12233 | static void | |
44702360 | 12234 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12235 | { |
348d480f | 12236 | |
492d29ea PA |
12237 | TRY |
12238 | { | |
12239 | update_global_location_list (insert_mode); | |
12240 | } | |
12241 | CATCH (e, RETURN_MASK_ERROR) | |
12242 | { | |
12243 | } | |
12244 | END_CATCH | |
348d480f PA |
12245 | } |
12246 | ||
12247 | /* Clear BKP from a BPS. */ | |
12248 | ||
12249 | static void | |
12250 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12251 | { | |
12252 | bpstat bs; | |
12253 | ||
12254 | for (bs = bps; bs; bs = bs->next) | |
12255 | if (bs->breakpoint_at == bpt) | |
12256 | { | |
12257 | bs->breakpoint_at = NULL; | |
12258 | bs->old_val = NULL; | |
12259 | /* bs->commands will be freed later. */ | |
12260 | } | |
12261 | } | |
12262 | ||
12263 | /* Callback for iterate_over_threads. */ | |
12264 | static int | |
12265 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12266 | { | |
9a3c8263 | 12267 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12268 | |
12269 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12270 | return 0; | |
12271 | } | |
12272 | ||
12273 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12274 | callbacks. */ | |
12275 | ||
12276 | static void | |
12277 | say_where (struct breakpoint *b) | |
12278 | { | |
12279 | struct value_print_options opts; | |
12280 | ||
12281 | get_user_print_options (&opts); | |
12282 | ||
12283 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12284 | single string. */ | |
12285 | if (b->loc == NULL) | |
12286 | { | |
f00aae0f KS |
12287 | /* For pending locations, the output differs slightly based |
12288 | on b->extra_string. If this is non-NULL, it contains either | |
12289 | a condition or dprintf arguments. */ | |
12290 | if (b->extra_string == NULL) | |
12291 | { | |
12292 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12293 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12294 | } |
12295 | else if (b->type == bp_dprintf) | |
12296 | { | |
12297 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12298 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12299 | b->extra_string); |
12300 | } | |
12301 | else | |
12302 | { | |
12303 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12304 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12305 | b->extra_string); |
12306 | } | |
348d480f PA |
12307 | } |
12308 | else | |
12309 | { | |
2f202fde | 12310 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12311 | { |
12312 | printf_filtered (" at "); | |
12313 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12314 | gdb_stdout); | |
12315 | } | |
2f202fde | 12316 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12317 | { |
12318 | /* If there is a single location, we can print the location | |
12319 | more nicely. */ | |
12320 | if (b->loc->next == NULL) | |
12321 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12322 | symtab_to_filename_for_display (b->loc->symtab), |
12323 | b->loc->line_number); | |
f8eba3c6 TT |
12324 | else |
12325 | /* This is not ideal, but each location may have a | |
12326 | different file name, and this at least reflects the | |
12327 | real situation somewhat. */ | |
f00aae0f | 12328 | printf_filtered (": %s.", |
d28cd78a | 12329 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12330 | } |
348d480f PA |
12331 | |
12332 | if (b->loc->next) | |
12333 | { | |
12334 | struct bp_location *loc = b->loc; | |
12335 | int n = 0; | |
12336 | for (; loc; loc = loc->next) | |
12337 | ++n; | |
12338 | printf_filtered (" (%d locations)", n); | |
12339 | } | |
12340 | } | |
12341 | } | |
12342 | ||
348d480f PA |
12343 | /* Default bp_location_ops methods. */ |
12344 | ||
12345 | static void | |
12346 | bp_location_dtor (struct bp_location *self) | |
12347 | { | |
348d480f PA |
12348 | xfree (self->function_name); |
12349 | } | |
12350 | ||
12351 | static const struct bp_location_ops bp_location_ops = | |
12352 | { | |
12353 | bp_location_dtor | |
12354 | }; | |
12355 | ||
c1fc2657 | 12356 | /* Destructor for the breakpoint base class. */ |
348d480f | 12357 | |
c1fc2657 | 12358 | breakpoint::~breakpoint () |
348d480f | 12359 | { |
c1fc2657 SM |
12360 | xfree (this->cond_string); |
12361 | xfree (this->extra_string); | |
12362 | xfree (this->filter); | |
348d480f PA |
12363 | } |
12364 | ||
2060206e PA |
12365 | static struct bp_location * |
12366 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12367 | { |
5625a286 | 12368 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12369 | } |
12370 | ||
2060206e PA |
12371 | static void |
12372 | base_breakpoint_re_set (struct breakpoint *b) | |
12373 | { | |
12374 | /* Nothing to re-set. */ | |
12375 | } | |
12376 | ||
12377 | #define internal_error_pure_virtual_called() \ | |
12378 | gdb_assert_not_reached ("pure virtual function called") | |
12379 | ||
12380 | static int | |
12381 | base_breakpoint_insert_location (struct bp_location *bl) | |
12382 | { | |
12383 | internal_error_pure_virtual_called (); | |
12384 | } | |
12385 | ||
12386 | static int | |
73971819 PA |
12387 | base_breakpoint_remove_location (struct bp_location *bl, |
12388 | enum remove_bp_reason reason) | |
2060206e PA |
12389 | { |
12390 | internal_error_pure_virtual_called (); | |
12391 | } | |
12392 | ||
12393 | static int | |
12394 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12395 | const address_space *aspace, |
09ac7c10 TT |
12396 | CORE_ADDR bp_addr, |
12397 | const struct target_waitstatus *ws) | |
2060206e PA |
12398 | { |
12399 | internal_error_pure_virtual_called (); | |
12400 | } | |
12401 | ||
12402 | static void | |
12403 | base_breakpoint_check_status (bpstat bs) | |
12404 | { | |
12405 | /* Always stop. */ | |
12406 | } | |
12407 | ||
12408 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12409 | errors. */ | |
12410 | ||
12411 | static int | |
12412 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12413 | { | |
12414 | internal_error_pure_virtual_called (); | |
12415 | } | |
12416 | ||
12417 | /* A "resources_needed" breakpoint_ops method that just internal | |
12418 | errors. */ | |
12419 | ||
12420 | static int | |
12421 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12422 | { | |
12423 | internal_error_pure_virtual_called (); | |
12424 | } | |
12425 | ||
12426 | static enum print_stop_action | |
12427 | base_breakpoint_print_it (bpstat bs) | |
12428 | { | |
12429 | internal_error_pure_virtual_called (); | |
12430 | } | |
12431 | ||
12432 | static void | |
12433 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12434 | struct ui_out *uiout) | |
12435 | { | |
12436 | /* nothing */ | |
12437 | } | |
12438 | ||
12439 | static void | |
12440 | base_breakpoint_print_mention (struct breakpoint *b) | |
12441 | { | |
12442 | internal_error_pure_virtual_called (); | |
12443 | } | |
12444 | ||
12445 | static void | |
12446 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12447 | { | |
12448 | internal_error_pure_virtual_called (); | |
12449 | } | |
12450 | ||
983af33b | 12451 | static void |
f00aae0f KS |
12452 | base_breakpoint_create_sals_from_location |
12453 | (const struct event_location *location, | |
12454 | struct linespec_result *canonical, | |
12455 | enum bptype type_wanted) | |
983af33b SDJ |
12456 | { |
12457 | internal_error_pure_virtual_called (); | |
12458 | } | |
12459 | ||
12460 | static void | |
12461 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12462 | struct linespec_result *c, | |
e1e01040 PA |
12463 | gdb::unique_xmalloc_ptr<char> cond_string, |
12464 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12465 | enum bptype type_wanted, |
12466 | enum bpdisp disposition, | |
12467 | int thread, | |
12468 | int task, int ignore_count, | |
12469 | const struct breakpoint_ops *o, | |
12470 | int from_tty, int enabled, | |
44f238bb | 12471 | int internal, unsigned flags) |
983af33b SDJ |
12472 | { |
12473 | internal_error_pure_virtual_called (); | |
12474 | } | |
12475 | ||
6c5b2ebe | 12476 | static std::vector<symtab_and_line> |
f00aae0f KS |
12477 | base_breakpoint_decode_location (struct breakpoint *b, |
12478 | const struct event_location *location, | |
6c5b2ebe | 12479 | struct program_space *search_pspace) |
983af33b SDJ |
12480 | { |
12481 | internal_error_pure_virtual_called (); | |
12482 | } | |
12483 | ||
ab04a2af TT |
12484 | /* The default 'explains_signal' method. */ |
12485 | ||
47591c29 | 12486 | static int |
427cd150 | 12487 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12488 | { |
47591c29 | 12489 | return 1; |
ab04a2af TT |
12490 | } |
12491 | ||
9d6e6e84 HZ |
12492 | /* The default "after_condition_true" method. */ |
12493 | ||
12494 | static void | |
12495 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12496 | { | |
12497 | /* Nothing to do. */ | |
12498 | } | |
12499 | ||
ab04a2af | 12500 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12501 | { |
2060206e PA |
12502 | base_breakpoint_allocate_location, |
12503 | base_breakpoint_re_set, | |
12504 | base_breakpoint_insert_location, | |
12505 | base_breakpoint_remove_location, | |
12506 | base_breakpoint_breakpoint_hit, | |
12507 | base_breakpoint_check_status, | |
12508 | base_breakpoint_resources_needed, | |
12509 | base_breakpoint_works_in_software_mode, | |
12510 | base_breakpoint_print_it, | |
12511 | NULL, | |
12512 | base_breakpoint_print_one_detail, | |
12513 | base_breakpoint_print_mention, | |
983af33b | 12514 | base_breakpoint_print_recreate, |
5f700d83 | 12515 | base_breakpoint_create_sals_from_location, |
983af33b | 12516 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12517 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12518 | base_breakpoint_explains_signal, |
12519 | base_breakpoint_after_condition_true, | |
2060206e PA |
12520 | }; |
12521 | ||
12522 | /* Default breakpoint_ops methods. */ | |
12523 | ||
12524 | static void | |
348d480f PA |
12525 | bkpt_re_set (struct breakpoint *b) |
12526 | { | |
06edf0c0 | 12527 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12528 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12529 | { |
f00aae0f | 12530 | /* Anything without a location can't be re-set. */ |
348d480f | 12531 | delete_breakpoint (b); |
06edf0c0 | 12532 | return; |
348d480f | 12533 | } |
06edf0c0 PA |
12534 | |
12535 | breakpoint_re_set_default (b); | |
348d480f PA |
12536 | } |
12537 | ||
2060206e | 12538 | static int |
348d480f PA |
12539 | bkpt_insert_location (struct bp_location *bl) |
12540 | { | |
cd6c3b4f YQ |
12541 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12542 | ||
579c6ad9 | 12543 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12544 | bl->target_info.placed_address = addr; |
12545 | ||
348d480f | 12546 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12547 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12548 | else |
7c16b83e | 12549 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12550 | } |
12551 | ||
2060206e | 12552 | static int |
73971819 | 12553 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12554 | { |
12555 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12556 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12557 | else | |
73971819 | 12558 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12559 | } |
12560 | ||
2060206e | 12561 | static int |
348d480f | 12562 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12563 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12564 | const struct target_waitstatus *ws) |
348d480f | 12565 | { |
09ac7c10 | 12566 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12567 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12568 | return 0; |
12569 | ||
348d480f PA |
12570 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12571 | aspace, bp_addr)) | |
12572 | return 0; | |
12573 | ||
12574 | if (overlay_debugging /* unmapped overlay section */ | |
12575 | && section_is_overlay (bl->section) | |
12576 | && !section_is_mapped (bl->section)) | |
12577 | return 0; | |
12578 | ||
12579 | return 1; | |
12580 | } | |
12581 | ||
cd1608cc PA |
12582 | static int |
12583 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12584 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12585 | const struct target_waitstatus *ws) |
12586 | { | |
12587 | if (dprintf_style == dprintf_style_agent | |
12588 | && target_can_run_breakpoint_commands ()) | |
12589 | { | |
12590 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12591 | for this address it must be for a breakpoint that happens to | |
12592 | be set at the same address. */ | |
12593 | return 0; | |
12594 | } | |
12595 | ||
12596 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12597 | } | |
12598 | ||
2060206e | 12599 | static int |
348d480f PA |
12600 | bkpt_resources_needed (const struct bp_location *bl) |
12601 | { | |
12602 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12603 | ||
12604 | return 1; | |
12605 | } | |
12606 | ||
2060206e | 12607 | static enum print_stop_action |
348d480f PA |
12608 | bkpt_print_it (bpstat bs) |
12609 | { | |
348d480f PA |
12610 | struct breakpoint *b; |
12611 | const struct bp_location *bl; | |
001c8c33 | 12612 | int bp_temp; |
79a45e25 | 12613 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12614 | |
12615 | gdb_assert (bs->bp_location_at != NULL); | |
12616 | ||
12617 | bl = bs->bp_location_at; | |
12618 | b = bs->breakpoint_at; | |
12619 | ||
001c8c33 PA |
12620 | bp_temp = b->disposition == disp_del; |
12621 | if (bl->address != bl->requested_address) | |
12622 | breakpoint_adjustment_warning (bl->requested_address, | |
12623 | bl->address, | |
12624 | b->number, 1); | |
12625 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12626 | maybe_print_thread_hit_breakpoint (uiout); |
12627 | ||
001c8c33 | 12628 | if (bp_temp) |
112e8700 | 12629 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12630 | else |
112e8700 SM |
12631 | uiout->text ("Breakpoint "); |
12632 | if (uiout->is_mi_like_p ()) | |
348d480f | 12633 | { |
112e8700 | 12634 | uiout->field_string ("reason", |
001c8c33 | 12635 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12636 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12637 | } |
112e8700 SM |
12638 | uiout->field_int ("bkptno", b->number); |
12639 | uiout->text (", "); | |
06edf0c0 | 12640 | |
001c8c33 | 12641 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12642 | } |
12643 | ||
2060206e | 12644 | static void |
06edf0c0 PA |
12645 | bkpt_print_mention (struct breakpoint *b) |
12646 | { | |
112e8700 | 12647 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12648 | return; |
12649 | ||
12650 | switch (b->type) | |
12651 | { | |
12652 | case bp_breakpoint: | |
12653 | case bp_gnu_ifunc_resolver: | |
12654 | if (b->disposition == disp_del) | |
12655 | printf_filtered (_("Temporary breakpoint")); | |
12656 | else | |
12657 | printf_filtered (_("Breakpoint")); | |
12658 | printf_filtered (_(" %d"), b->number); | |
12659 | if (b->type == bp_gnu_ifunc_resolver) | |
12660 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12661 | break; | |
12662 | case bp_hardware_breakpoint: | |
12663 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12664 | break; | |
e7e0cddf SS |
12665 | case bp_dprintf: |
12666 | printf_filtered (_("Dprintf %d"), b->number); | |
12667 | break; | |
06edf0c0 PA |
12668 | } |
12669 | ||
12670 | say_where (b); | |
12671 | } | |
12672 | ||
2060206e | 12673 | static void |
06edf0c0 PA |
12674 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12675 | { | |
12676 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12677 | fprintf_unfiltered (fp, "tbreak"); | |
12678 | else if (tp->type == bp_breakpoint) | |
12679 | fprintf_unfiltered (fp, "break"); | |
12680 | else if (tp->type == bp_hardware_breakpoint | |
12681 | && tp->disposition == disp_del) | |
12682 | fprintf_unfiltered (fp, "thbreak"); | |
12683 | else if (tp->type == bp_hardware_breakpoint) | |
12684 | fprintf_unfiltered (fp, "hbreak"); | |
12685 | else | |
12686 | internal_error (__FILE__, __LINE__, | |
12687 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12688 | ||
f00aae0f | 12689 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12690 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12691 | |
12692 | /* Print out extra_string if this breakpoint is pending. It might | |
12693 | contain, for example, conditions that were set by the user. */ | |
12694 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12695 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12696 | ||
dd11a36c | 12697 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12698 | } |
12699 | ||
983af33b | 12700 | static void |
f00aae0f KS |
12701 | bkpt_create_sals_from_location (const struct event_location *location, |
12702 | struct linespec_result *canonical, | |
12703 | enum bptype type_wanted) | |
983af33b | 12704 | { |
f00aae0f | 12705 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12706 | } |
12707 | ||
12708 | static void | |
12709 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12710 | struct linespec_result *canonical, | |
e1e01040 PA |
12711 | gdb::unique_xmalloc_ptr<char> cond_string, |
12712 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12713 | enum bptype type_wanted, |
12714 | enum bpdisp disposition, | |
12715 | int thread, | |
12716 | int task, int ignore_count, | |
12717 | const struct breakpoint_ops *ops, | |
12718 | int from_tty, int enabled, | |
44f238bb | 12719 | int internal, unsigned flags) |
983af33b | 12720 | { |
023fa29b | 12721 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12722 | std::move (cond_string), |
12723 | std::move (extra_string), | |
e7e0cddf | 12724 | type_wanted, |
983af33b SDJ |
12725 | disposition, thread, task, |
12726 | ignore_count, ops, from_tty, | |
44f238bb | 12727 | enabled, internal, flags); |
983af33b SDJ |
12728 | } |
12729 | ||
6c5b2ebe | 12730 | static std::vector<symtab_and_line> |
f00aae0f KS |
12731 | bkpt_decode_location (struct breakpoint *b, |
12732 | const struct event_location *location, | |
6c5b2ebe | 12733 | struct program_space *search_pspace) |
983af33b | 12734 | { |
6c5b2ebe | 12735 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12736 | } |
12737 | ||
06edf0c0 PA |
12738 | /* Virtual table for internal breakpoints. */ |
12739 | ||
12740 | static void | |
12741 | internal_bkpt_re_set (struct breakpoint *b) | |
12742 | { | |
12743 | switch (b->type) | |
12744 | { | |
12745 | /* Delete overlay event and longjmp master breakpoints; they | |
12746 | will be reset later by breakpoint_re_set. */ | |
12747 | case bp_overlay_event: | |
12748 | case bp_longjmp_master: | |
12749 | case bp_std_terminate_master: | |
12750 | case bp_exception_master: | |
12751 | delete_breakpoint (b); | |
12752 | break; | |
12753 | ||
12754 | /* This breakpoint is special, it's set up when the inferior | |
12755 | starts and we really don't want to touch it. */ | |
12756 | case bp_shlib_event: | |
12757 | ||
12758 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12759 | it is set up, we do not want to touch it. */ | |
12760 | case bp_thread_event: | |
12761 | break; | |
12762 | } | |
12763 | } | |
12764 | ||
12765 | static void | |
12766 | internal_bkpt_check_status (bpstat bs) | |
12767 | { | |
a9b3a50f PA |
12768 | if (bs->breakpoint_at->type == bp_shlib_event) |
12769 | { | |
12770 | /* If requested, stop when the dynamic linker notifies GDB of | |
12771 | events. This allows the user to get control and place | |
12772 | breakpoints in initializer routines for dynamically loaded | |
12773 | objects (among other things). */ | |
12774 | bs->stop = stop_on_solib_events; | |
12775 | bs->print = stop_on_solib_events; | |
12776 | } | |
12777 | else | |
12778 | bs->stop = 0; | |
06edf0c0 PA |
12779 | } |
12780 | ||
12781 | static enum print_stop_action | |
12782 | internal_bkpt_print_it (bpstat bs) | |
12783 | { | |
06edf0c0 | 12784 | struct breakpoint *b; |
06edf0c0 | 12785 | |
06edf0c0 PA |
12786 | b = bs->breakpoint_at; |
12787 | ||
06edf0c0 PA |
12788 | switch (b->type) |
12789 | { | |
348d480f PA |
12790 | case bp_shlib_event: |
12791 | /* Did we stop because the user set the stop_on_solib_events | |
12792 | variable? (If so, we report this as a generic, "Stopped due | |
12793 | to shlib event" message.) */ | |
edcc5120 | 12794 | print_solib_event (0); |
348d480f PA |
12795 | break; |
12796 | ||
12797 | case bp_thread_event: | |
12798 | /* Not sure how we will get here. | |
12799 | GDB should not stop for these breakpoints. */ | |
12800 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12801 | break; |
12802 | ||
12803 | case bp_overlay_event: | |
12804 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12805 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12806 | break; |
12807 | ||
12808 | case bp_longjmp_master: | |
12809 | /* These should never be enabled. */ | |
12810 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12811 | break; |
12812 | ||
12813 | case bp_std_terminate_master: | |
12814 | /* These should never be enabled. */ | |
12815 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12816 | "gdb should not stop!\n")); | |
348d480f PA |
12817 | break; |
12818 | ||
12819 | case bp_exception_master: | |
12820 | /* These should never be enabled. */ | |
12821 | printf_filtered (_("Exception Master Breakpoint: " | |
12822 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12823 | break; |
12824 | } | |
12825 | ||
001c8c33 | 12826 | return PRINT_NOTHING; |
06edf0c0 PA |
12827 | } |
12828 | ||
12829 | static void | |
12830 | internal_bkpt_print_mention (struct breakpoint *b) | |
12831 | { | |
12832 | /* Nothing to mention. These breakpoints are internal. */ | |
12833 | } | |
12834 | ||
06edf0c0 PA |
12835 | /* Virtual table for momentary breakpoints */ |
12836 | ||
12837 | static void | |
12838 | momentary_bkpt_re_set (struct breakpoint *b) | |
12839 | { | |
12840 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12841 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12842 | Otherwise these should have been blown away via the cleanup chain |
12843 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12844 | } | |
12845 | ||
12846 | static void | |
12847 | momentary_bkpt_check_status (bpstat bs) | |
12848 | { | |
12849 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12850 | } | |
12851 | ||
12852 | static enum print_stop_action | |
12853 | momentary_bkpt_print_it (bpstat bs) | |
12854 | { | |
001c8c33 | 12855 | return PRINT_UNKNOWN; |
348d480f PA |
12856 | } |
12857 | ||
06edf0c0 PA |
12858 | static void |
12859 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12860 | { |
06edf0c0 | 12861 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12862 | } |
12863 | ||
e2e4d78b JK |
12864 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12865 | ||
12866 | It gets cleared already on the removal of the first one of such placed | |
12867 | breakpoints. This is OK as they get all removed altogether. */ | |
12868 | ||
c1fc2657 | 12869 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12870 | { |
c1fc2657 | 12871 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12872 | |
c1fc2657 | 12873 | if (tp != NULL) |
e2e4d78b | 12874 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12875 | } |
12876 | ||
55aa24fb SDJ |
12877 | /* Specific methods for probe breakpoints. */ |
12878 | ||
12879 | static int | |
12880 | bkpt_probe_insert_location (struct bp_location *bl) | |
12881 | { | |
12882 | int v = bkpt_insert_location (bl); | |
12883 | ||
12884 | if (v == 0) | |
12885 | { | |
12886 | /* The insertion was successful, now let's set the probe's semaphore | |
12887 | if needed. */ | |
0ea5cda8 SDJ |
12888 | if (bl->probe.probe->pops->set_semaphore != NULL) |
12889 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
12890 | bl->probe.objfile, | |
12891 | bl->gdbarch); | |
55aa24fb SDJ |
12892 | } |
12893 | ||
12894 | return v; | |
12895 | } | |
12896 | ||
12897 | static int | |
73971819 PA |
12898 | bkpt_probe_remove_location (struct bp_location *bl, |
12899 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12900 | { |
12901 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
12902 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
12903 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
12904 | bl->probe.objfile, | |
12905 | bl->gdbarch); | |
55aa24fb | 12906 | |
73971819 | 12907 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12908 | } |
12909 | ||
12910 | static void | |
f00aae0f | 12911 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12912 | struct linespec_result *canonical, |
f00aae0f | 12913 | enum bptype type_wanted) |
55aa24fb SDJ |
12914 | { |
12915 | struct linespec_sals lsal; | |
12916 | ||
c2f4122d | 12917 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12918 | lsal.canonical |
12919 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12920 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12921 | } |
12922 | ||
6c5b2ebe | 12923 | static std::vector<symtab_and_line> |
f00aae0f KS |
12924 | bkpt_probe_decode_location (struct breakpoint *b, |
12925 | const struct event_location *location, | |
6c5b2ebe | 12926 | struct program_space *search_pspace) |
55aa24fb | 12927 | { |
6c5b2ebe PA |
12928 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12929 | if (sals.empty ()) | |
55aa24fb | 12930 | error (_("probe not found")); |
6c5b2ebe | 12931 | return sals; |
55aa24fb SDJ |
12932 | } |
12933 | ||
348d480f | 12934 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12935 | |
348d480f PA |
12936 | static void |
12937 | tracepoint_re_set (struct breakpoint *b) | |
12938 | { | |
12939 | breakpoint_re_set_default (b); | |
12940 | } | |
876fa593 | 12941 | |
348d480f PA |
12942 | static int |
12943 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12944 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12945 | const struct target_waitstatus *ws) |
348d480f PA |
12946 | { |
12947 | /* By definition, the inferior does not report stops at | |
12948 | tracepoints. */ | |
12949 | return 0; | |
74960c60 VP |
12950 | } |
12951 | ||
12952 | static void | |
348d480f PA |
12953 | tracepoint_print_one_detail (const struct breakpoint *self, |
12954 | struct ui_out *uiout) | |
74960c60 | 12955 | { |
d9b3f62e PA |
12956 | struct tracepoint *tp = (struct tracepoint *) self; |
12957 | if (tp->static_trace_marker_id) | |
348d480f PA |
12958 | { |
12959 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12960 | |
112e8700 SM |
12961 | uiout->text ("\tmarker id is "); |
12962 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12963 | tp->static_trace_marker_id); |
112e8700 | 12964 | uiout->text ("\n"); |
348d480f | 12965 | } |
0d381245 VP |
12966 | } |
12967 | ||
a474d7c2 | 12968 | static void |
348d480f | 12969 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12970 | { |
112e8700 | 12971 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12972 | return; |
cc59ec59 | 12973 | |
348d480f PA |
12974 | switch (b->type) |
12975 | { | |
12976 | case bp_tracepoint: | |
12977 | printf_filtered (_("Tracepoint")); | |
12978 | printf_filtered (_(" %d"), b->number); | |
12979 | break; | |
12980 | case bp_fast_tracepoint: | |
12981 | printf_filtered (_("Fast tracepoint")); | |
12982 | printf_filtered (_(" %d"), b->number); | |
12983 | break; | |
12984 | case bp_static_tracepoint: | |
12985 | printf_filtered (_("Static tracepoint")); | |
12986 | printf_filtered (_(" %d"), b->number); | |
12987 | break; | |
12988 | default: | |
12989 | internal_error (__FILE__, __LINE__, | |
12990 | _("unhandled tracepoint type %d"), (int) b->type); | |
12991 | } | |
12992 | ||
12993 | say_where (b); | |
a474d7c2 PA |
12994 | } |
12995 | ||
348d480f | 12996 | static void |
d9b3f62e | 12997 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12998 | { |
d9b3f62e PA |
12999 | struct tracepoint *tp = (struct tracepoint *) self; |
13000 | ||
13001 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13002 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13003 | else if (self->type == bp_static_tracepoint) |
348d480f | 13004 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13005 | else if (self->type == bp_tracepoint) |
348d480f PA |
13006 | fprintf_unfiltered (fp, "trace"); |
13007 | else | |
13008 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13009 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13010 | |
f00aae0f | 13011 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13012 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13013 | print_recreate_thread (self, fp); |
13014 | ||
13015 | if (tp->pass_count) | |
13016 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13017 | } |
13018 | ||
983af33b | 13019 | static void |
f00aae0f KS |
13020 | tracepoint_create_sals_from_location (const struct event_location *location, |
13021 | struct linespec_result *canonical, | |
13022 | enum bptype type_wanted) | |
983af33b | 13023 | { |
f00aae0f | 13024 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13025 | } |
13026 | ||
13027 | static void | |
13028 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13029 | struct linespec_result *canonical, | |
e1e01040 PA |
13030 | gdb::unique_xmalloc_ptr<char> cond_string, |
13031 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13032 | enum bptype type_wanted, |
13033 | enum bpdisp disposition, | |
13034 | int thread, | |
13035 | int task, int ignore_count, | |
13036 | const struct breakpoint_ops *ops, | |
13037 | int from_tty, int enabled, | |
44f238bb | 13038 | int internal, unsigned flags) |
983af33b | 13039 | { |
023fa29b | 13040 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13041 | std::move (cond_string), |
13042 | std::move (extra_string), | |
e7e0cddf | 13043 | type_wanted, |
983af33b SDJ |
13044 | disposition, thread, task, |
13045 | ignore_count, ops, from_tty, | |
44f238bb | 13046 | enabled, internal, flags); |
983af33b SDJ |
13047 | } |
13048 | ||
6c5b2ebe | 13049 | static std::vector<symtab_and_line> |
f00aae0f KS |
13050 | tracepoint_decode_location (struct breakpoint *b, |
13051 | const struct event_location *location, | |
6c5b2ebe | 13052 | struct program_space *search_pspace) |
983af33b | 13053 | { |
6c5b2ebe | 13054 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13055 | } |
13056 | ||
2060206e | 13057 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13058 | |
55aa24fb SDJ |
13059 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13060 | static probe. */ | |
13061 | ||
13062 | static void | |
f00aae0f KS |
13063 | tracepoint_probe_create_sals_from_location |
13064 | (const struct event_location *location, | |
13065 | struct linespec_result *canonical, | |
13066 | enum bptype type_wanted) | |
55aa24fb SDJ |
13067 | { |
13068 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13069 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13070 | } |
13071 | ||
6c5b2ebe | 13072 | static std::vector<symtab_and_line> |
f00aae0f KS |
13073 | tracepoint_probe_decode_location (struct breakpoint *b, |
13074 | const struct event_location *location, | |
6c5b2ebe | 13075 | struct program_space *search_pspace) |
55aa24fb SDJ |
13076 | { |
13077 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13078 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13079 | } |
13080 | ||
13081 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13082 | ||
5c2b4418 HZ |
13083 | /* Dprintf breakpoint_ops methods. */ |
13084 | ||
13085 | static void | |
13086 | dprintf_re_set (struct breakpoint *b) | |
13087 | { | |
13088 | breakpoint_re_set_default (b); | |
13089 | ||
f00aae0f KS |
13090 | /* extra_string should never be non-NULL for dprintf. */ |
13091 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13092 | |
13093 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13094 | 2 - create a dprintf, which resolves fine. | |
13095 | 3 - disconnect from target 1 | |
13096 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13097 | ||
13098 | After steps #3/#4, you'll want the dprintf command list to | |
13099 | be updated, because target 1 and 2 may well return different | |
13100 | answers for target_can_run_breakpoint_commands(). | |
13101 | Given absence of finer grained resetting, we get to do | |
13102 | it all the time. */ | |
13103 | if (b->extra_string != NULL) | |
13104 | update_dprintf_command_list (b); | |
13105 | } | |
13106 | ||
2d9442cc HZ |
13107 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13108 | ||
13109 | static void | |
13110 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13111 | { | |
f00aae0f | 13112 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13113 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13114 | tp->extra_string); |
13115 | print_recreate_thread (tp, fp); | |
13116 | } | |
13117 | ||
9d6e6e84 HZ |
13118 | /* Implement the "after_condition_true" breakpoint_ops method for |
13119 | dprintf. | |
13120 | ||
13121 | dprintf's are implemented with regular commands in their command | |
13122 | list, but we run the commands here instead of before presenting the | |
13123 | stop to the user, as dprintf's don't actually cause a stop. This | |
13124 | also makes it so that the commands of multiple dprintfs at the same | |
13125 | address are all handled. */ | |
13126 | ||
13127 | static void | |
13128 | dprintf_after_condition_true (struct bpstats *bs) | |
13129 | { | |
04afa70c | 13130 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13131 | struct bpstats *tmp_bs_p = &tmp_bs; |
13132 | ||
13133 | /* dprintf's never cause a stop. This wasn't set in the | |
13134 | check_status hook instead because that would make the dprintf's | |
13135 | condition not be evaluated. */ | |
13136 | bs->stop = 0; | |
13137 | ||
13138 | /* Run the command list here. Take ownership of it instead of | |
13139 | copying. We never want these commands to run later in | |
13140 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13141 | be set at same address as this dprintf, or even if running the | |
13142 | commands here throws. */ | |
13143 | tmp_bs.commands = bs->commands; | |
13144 | bs->commands = NULL; | |
9d6e6e84 HZ |
13145 | |
13146 | bpstat_do_actions_1 (&tmp_bs_p); | |
13147 | ||
13148 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13149 | bpstat_do_actions_1 may return early without processing the whole | |
13150 | list. */ | |
9d6e6e84 HZ |
13151 | } |
13152 | ||
983af33b SDJ |
13153 | /* The breakpoint_ops structure to be used on static tracepoints with |
13154 | markers (`-m'). */ | |
13155 | ||
13156 | static void | |
f00aae0f | 13157 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13158 | struct linespec_result *canonical, |
f00aae0f | 13159 | enum bptype type_wanted) |
983af33b SDJ |
13160 | { |
13161 | struct linespec_sals lsal; | |
f00aae0f | 13162 | const char *arg_start, *arg; |
983af33b | 13163 | |
f00aae0f KS |
13164 | arg = arg_start = get_linespec_location (location); |
13165 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13166 | |
f2fc3015 TT |
13167 | std::string str (arg_start, arg - arg_start); |
13168 | const char *ptr = str.c_str (); | |
13169 | canonical->location = new_linespec_location (&ptr); | |
983af33b | 13170 | |
8e9e35b1 TT |
13171 | lsal.canonical |
13172 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13173 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13174 | } |
13175 | ||
13176 | static void | |
13177 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13178 | struct linespec_result *canonical, | |
e1e01040 PA |
13179 | gdb::unique_xmalloc_ptr<char> cond_string, |
13180 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13181 | enum bptype type_wanted, |
13182 | enum bpdisp disposition, | |
13183 | int thread, | |
13184 | int task, int ignore_count, | |
13185 | const struct breakpoint_ops *ops, | |
13186 | int from_tty, int enabled, | |
44f238bb | 13187 | int internal, unsigned flags) |
983af33b | 13188 | { |
6c5b2ebe | 13189 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13190 | |
13191 | /* If the user is creating a static tracepoint by marker id | |
13192 | (strace -m MARKER_ID), then store the sals index, so that | |
13193 | breakpoint_re_set can try to match up which of the newly | |
13194 | found markers corresponds to this one, and, don't try to | |
13195 | expand multiple locations for each sal, given than SALS | |
13196 | already should contain all sals for MARKER_ID. */ | |
13197 | ||
6c5b2ebe | 13198 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13199 | { |
6c5b2ebe PA |
13200 | event_location_up location |
13201 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13202 | |
b270e6f9 | 13203 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13204 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13205 | std::move (location), NULL, |
e1e01040 PA |
13206 | std::move (cond_string), |
13207 | std::move (extra_string), | |
e7e0cddf | 13208 | type_wanted, disposition, |
983af33b | 13209 | thread, task, ignore_count, ops, |
44f238bb | 13210 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13211 | canonical->special_display); |
13212 | /* Given that its possible to have multiple markers with | |
13213 | the same string id, if the user is creating a static | |
13214 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13215 | store the sals index, so that breakpoint_re_set can | |
13216 | try to match up which of the newly found markers | |
13217 | corresponds to this one */ | |
13218 | tp->static_trace_marker_id_idx = i; | |
13219 | ||
b270e6f9 | 13220 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13221 | } |
13222 | } | |
13223 | ||
6c5b2ebe | 13224 | static std::vector<symtab_and_line> |
f00aae0f KS |
13225 | strace_marker_decode_location (struct breakpoint *b, |
13226 | const struct event_location *location, | |
6c5b2ebe | 13227 | struct program_space *search_pspace) |
983af33b SDJ |
13228 | { |
13229 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13230 | const char *s = get_linespec_location (location); |
983af33b | 13231 | |
6c5b2ebe PA |
13232 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13233 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13234 | { |
6c5b2ebe PA |
13235 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13236 | sals.resize (1); | |
13237 | return sals; | |
983af33b SDJ |
13238 | } |
13239 | else | |
13240 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13241 | } | |
13242 | ||
13243 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13244 | ||
13245 | static int | |
13246 | strace_marker_p (struct breakpoint *b) | |
13247 | { | |
13248 | return b->ops == &strace_marker_breakpoint_ops; | |
13249 | } | |
13250 | ||
53a5351d | 13251 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13252 | structures. */ |
c906108c SS |
13253 | |
13254 | void | |
fba45db2 | 13255 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13256 | { |
52f0bd74 | 13257 | struct breakpoint *b; |
c906108c | 13258 | |
8a3fe4f8 | 13259 | gdb_assert (bpt != NULL); |
c906108c | 13260 | |
4a64f543 MS |
13261 | /* Has this bp already been deleted? This can happen because |
13262 | multiple lists can hold pointers to bp's. bpstat lists are | |
13263 | especial culprits. | |
13264 | ||
13265 | One example of this happening is a watchpoint's scope bp. When | |
13266 | the scope bp triggers, we notice that the watchpoint is out of | |
13267 | scope, and delete it. We also delete its scope bp. But the | |
13268 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13269 | That bpstat is then checked for auto-deleting bp's, which are | |
13270 | deleted. | |
13271 | ||
13272 | A real solution to this problem might involve reference counts in | |
13273 | bp's, and/or giving them pointers back to their referencing | |
13274 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13275 | storage when no more references were extent. A cheaper bandaid | |
13276 | was chosen. */ | |
c906108c SS |
13277 | if (bpt->type == bp_none) |
13278 | return; | |
13279 | ||
4a64f543 MS |
13280 | /* At least avoid this stale reference until the reference counting |
13281 | of breakpoints gets resolved. */ | |
d0fb5eae | 13282 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13283 | { |
d0fb5eae | 13284 | struct breakpoint *related; |
3a5c3e22 | 13285 | struct watchpoint *w; |
d0fb5eae JK |
13286 | |
13287 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13288 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13289 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13290 | w = (struct watchpoint *) bpt; |
13291 | else | |
13292 | w = NULL; | |
13293 | if (w != NULL) | |
13294 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13295 | |
13296 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13297 | for (related = bpt; related->related_breakpoint != bpt; | |
13298 | related = related->related_breakpoint); | |
13299 | related->related_breakpoint = bpt->related_breakpoint; | |
13300 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13301 | } |
13302 | ||
a9634178 TJB |
13303 | /* watch_command_1 creates a watchpoint but only sets its number if |
13304 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13305 | a problem in that process, we'll be asked to delete the half-created | |
13306 | watchpoint. In that case, don't announce the deletion. */ | |
13307 | if (bpt->number) | |
13308 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13309 | |
c906108c SS |
13310 | if (breakpoint_chain == bpt) |
13311 | breakpoint_chain = bpt->next; | |
13312 | ||
c906108c SS |
13313 | ALL_BREAKPOINTS (b) |
13314 | if (b->next == bpt) | |
c5aa993b JM |
13315 | { |
13316 | b->next = bpt->next; | |
13317 | break; | |
13318 | } | |
c906108c | 13319 | |
f431efe5 PA |
13320 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13321 | been freed. */ | |
13322 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13323 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13324 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13325 | commands are associated with the bpstat; if we remove it here, | |
13326 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13327 | event-top.c won't do anything, and temporary breakpoints with | |
13328 | commands won't work. */ | |
13329 | ||
13330 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13331 | ||
4a64f543 MS |
13332 | /* Now that breakpoint is removed from breakpoint list, update the |
13333 | global location list. This will remove locations that used to | |
13334 | belong to this breakpoint. Do this before freeing the breakpoint | |
13335 | itself, since remove_breakpoint looks at location's owner. It | |
13336 | might be better design to have location completely | |
13337 | self-contained, but it's not the case now. */ | |
44702360 | 13338 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13339 | |
4a64f543 MS |
13340 | /* On the chance that someone will soon try again to delete this |
13341 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13342 | bpt->type = bp_none; |
4d01a485 | 13343 | delete bpt; |
c906108c SS |
13344 | } |
13345 | ||
51be5b68 PA |
13346 | /* Iterator function to call a user-provided callback function once |
13347 | for each of B and its related breakpoints. */ | |
13348 | ||
13349 | static void | |
13350 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13351 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13352 | { |
13353 | struct breakpoint *related; | |
13354 | ||
13355 | related = b; | |
13356 | do | |
13357 | { | |
13358 | struct breakpoint *next; | |
13359 | ||
13360 | /* FUNCTION may delete RELATED. */ | |
13361 | next = related->related_breakpoint; | |
13362 | ||
13363 | if (next == related) | |
13364 | { | |
13365 | /* RELATED is the last ring entry. */ | |
48649e1b | 13366 | function (related); |
51be5b68 PA |
13367 | |
13368 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13369 | B. There's nothing left to do anyway, so just break | |
13370 | out. */ | |
13371 | break; | |
13372 | } | |
13373 | else | |
48649e1b | 13374 | function (related); |
51be5b68 PA |
13375 | |
13376 | related = next; | |
13377 | } | |
13378 | while (related != b); | |
13379 | } | |
95a42b64 | 13380 | |
4495129a | 13381 | static void |
981a3fb3 | 13382 | delete_command (const char *arg, int from_tty) |
c906108c | 13383 | { |
35df4500 | 13384 | struct breakpoint *b, *b_tmp; |
c906108c | 13385 | |
ea9365bb TT |
13386 | dont_repeat (); |
13387 | ||
c906108c SS |
13388 | if (arg == 0) |
13389 | { | |
13390 | int breaks_to_delete = 0; | |
13391 | ||
46c6471b PA |
13392 | /* Delete all breakpoints if no argument. Do not delete |
13393 | internal breakpoints, these have to be deleted with an | |
13394 | explicit breakpoint number argument. */ | |
c5aa993b | 13395 | ALL_BREAKPOINTS (b) |
46c6471b | 13396 | if (user_breakpoint_p (b)) |
973d738b DJ |
13397 | { |
13398 | breaks_to_delete = 1; | |
13399 | break; | |
13400 | } | |
c906108c SS |
13401 | |
13402 | /* Ask user only if there are some breakpoints to delete. */ | |
13403 | if (!from_tty | |
e2e0b3e5 | 13404 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13405 | { |
35df4500 | 13406 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13407 | if (user_breakpoint_p (b)) |
c5aa993b | 13408 | delete_breakpoint (b); |
c906108c SS |
13409 | } |
13410 | } | |
13411 | else | |
48649e1b TT |
13412 | map_breakpoint_numbers |
13413 | (arg, [&] (breakpoint *b) | |
13414 | { | |
13415 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13416 | }); | |
c906108c SS |
13417 | } |
13418 | ||
c2f4122d PA |
13419 | /* Return true if all locations of B bound to PSPACE are pending. If |
13420 | PSPACE is NULL, all locations of all program spaces are | |
13421 | considered. */ | |
13422 | ||
0d381245 | 13423 | static int |
c2f4122d | 13424 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13425 | { |
c2f4122d PA |
13426 | struct bp_location *loc; |
13427 | ||
13428 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13429 | if ((pspace == NULL | |
13430 | || loc->pspace == pspace) | |
13431 | && !loc->shlib_disabled | |
8645ff69 | 13432 | && !loc->pspace->executing_startup) |
0d381245 VP |
13433 | return 0; |
13434 | return 1; | |
fe3f5fa8 VP |
13435 | } |
13436 | ||
776592bf DE |
13437 | /* Subroutine of update_breakpoint_locations to simplify it. |
13438 | Return non-zero if multiple fns in list LOC have the same name. | |
13439 | Null names are ignored. */ | |
13440 | ||
13441 | static int | |
13442 | ambiguous_names_p (struct bp_location *loc) | |
13443 | { | |
13444 | struct bp_location *l; | |
13445 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13446 | (int (*) (const void *, |
13447 | const void *)) streq, | |
776592bf DE |
13448 | NULL, xcalloc, xfree); |
13449 | ||
13450 | for (l = loc; l != NULL; l = l->next) | |
13451 | { | |
13452 | const char **slot; | |
13453 | const char *name = l->function_name; | |
13454 | ||
13455 | /* Allow for some names to be NULL, ignore them. */ | |
13456 | if (name == NULL) | |
13457 | continue; | |
13458 | ||
13459 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13460 | INSERT); | |
4a64f543 MS |
13461 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13462 | returns NULL. */ | |
776592bf DE |
13463 | if (*slot != NULL) |
13464 | { | |
13465 | htab_delete (htab); | |
13466 | return 1; | |
13467 | } | |
13468 | *slot = name; | |
13469 | } | |
13470 | ||
13471 | htab_delete (htab); | |
13472 | return 0; | |
13473 | } | |
13474 | ||
0fb4aa4b PA |
13475 | /* When symbols change, it probably means the sources changed as well, |
13476 | and it might mean the static tracepoint markers are no longer at | |
13477 | the same address or line numbers they used to be at last we | |
13478 | checked. Losing your static tracepoints whenever you rebuild is | |
13479 | undesirable. This function tries to resync/rematch gdb static | |
13480 | tracepoints with the markers on the target, for static tracepoints | |
13481 | that have not been set by marker id. Static tracepoint that have | |
13482 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13483 | The heuristic is: | |
13484 | ||
13485 | 1) For a tracepoint set at a specific address, look for a marker at | |
13486 | the old PC. If one is found there, assume to be the same marker. | |
13487 | If the name / string id of the marker found is different from the | |
13488 | previous known name, assume that means the user renamed the marker | |
13489 | in the sources, and output a warning. | |
13490 | ||
13491 | 2) For a tracepoint set at a given line number, look for a marker | |
13492 | at the new address of the old line number. If one is found there, | |
13493 | assume to be the same marker. If the name / string id of the | |
13494 | marker found is different from the previous known name, assume that | |
13495 | means the user renamed the marker in the sources, and output a | |
13496 | warning. | |
13497 | ||
13498 | 3) If a marker is no longer found at the same address or line, it | |
13499 | may mean the marker no longer exists. But it may also just mean | |
13500 | the code changed a bit. Maybe the user added a few lines of code | |
13501 | that made the marker move up or down (in line number terms). Ask | |
13502 | the target for info about the marker with the string id as we knew | |
13503 | it. If found, update line number and address in the matching | |
13504 | static tracepoint. This will get confused if there's more than one | |
13505 | marker with the same ID (possible in UST, although unadvised | |
13506 | precisely because it confuses tools). */ | |
13507 | ||
13508 | static struct symtab_and_line | |
13509 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13510 | { | |
d9b3f62e | 13511 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13512 | struct static_tracepoint_marker marker; |
13513 | CORE_ADDR pc; | |
0fb4aa4b PA |
13514 | |
13515 | pc = sal.pc; | |
13516 | if (sal.line) | |
13517 | find_line_pc (sal.symtab, sal.line, &pc); | |
13518 | ||
13519 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13520 | { | |
d9b3f62e | 13521 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13522 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13523 | b->number, | |
d9b3f62e | 13524 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13525 | |
d9b3f62e PA |
13526 | xfree (tp->static_trace_marker_id); |
13527 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13528 | release_static_tracepoint_marker (&marker); |
13529 | ||
13530 | return sal; | |
13531 | } | |
13532 | ||
13533 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13534 | by string ID. */ | |
13535 | if (!sal.explicit_pc | |
13536 | && sal.line != 0 | |
13537 | && sal.symtab != NULL | |
d9b3f62e | 13538 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13539 | { |
13540 | VEC(static_tracepoint_marker_p) *markers; | |
13541 | ||
13542 | markers | |
d9b3f62e | 13543 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13544 | |
13545 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13546 | { | |
0fb4aa4b | 13547 | struct symbol *sym; |
80e1d417 | 13548 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13549 | struct ui_out *uiout = current_uiout; |
67994074 | 13550 | struct explicit_location explicit_loc; |
0fb4aa4b | 13551 | |
80e1d417 | 13552 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13553 | |
d9b3f62e | 13554 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13555 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13556 | |
13557 | warning (_("marker for static tracepoint %d (%s) not " | |
13558 | "found at previous line number"), | |
d9b3f62e | 13559 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13560 | |
51abb421 | 13561 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13562 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13563 | uiout->text ("Now in "); |
0fb4aa4b PA |
13564 | if (sym) |
13565 | { | |
112e8700 SM |
13566 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13567 | uiout->text (" at "); | |
0fb4aa4b | 13568 | } |
112e8700 | 13569 | uiout->field_string ("file", |
05cba821 | 13570 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13571 | uiout->text (":"); |
0fb4aa4b | 13572 | |
112e8700 | 13573 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13574 | { |
0b0865da | 13575 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13576 | |
112e8700 | 13577 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13578 | } |
13579 | ||
112e8700 SM |
13580 | uiout->field_int ("line", sal2.line); |
13581 | uiout->text ("\n"); | |
0fb4aa4b | 13582 | |
80e1d417 | 13583 | b->loc->line_number = sal2.line; |
2f202fde | 13584 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13585 | |
d28cd78a | 13586 | b->location.reset (NULL); |
67994074 KS |
13587 | initialize_explicit_location (&explicit_loc); |
13588 | explicit_loc.source_filename | |
00e52e53 | 13589 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13590 | explicit_loc.line_offset.offset = b->loc->line_number; |
13591 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13592 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13593 | |
13594 | /* Might be nice to check if function changed, and warn if | |
13595 | so. */ | |
13596 | ||
80e1d417 | 13597 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13598 | } |
13599 | } | |
13600 | return sal; | |
13601 | } | |
13602 | ||
8d3788bd VP |
13603 | /* Returns 1 iff locations A and B are sufficiently same that |
13604 | we don't need to report breakpoint as changed. */ | |
13605 | ||
13606 | static int | |
13607 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13608 | { | |
13609 | while (a && b) | |
13610 | { | |
13611 | if (a->address != b->address) | |
13612 | return 0; | |
13613 | ||
13614 | if (a->shlib_disabled != b->shlib_disabled) | |
13615 | return 0; | |
13616 | ||
13617 | if (a->enabled != b->enabled) | |
13618 | return 0; | |
13619 | ||
13620 | a = a->next; | |
13621 | b = b->next; | |
13622 | } | |
13623 | ||
13624 | if ((a == NULL) != (b == NULL)) | |
13625 | return 0; | |
13626 | ||
13627 | return 1; | |
13628 | } | |
13629 | ||
c2f4122d PA |
13630 | /* Split all locations of B that are bound to PSPACE out of B's |
13631 | location list to a separate list and return that list's head. If | |
13632 | PSPACE is NULL, hoist out all locations of B. */ | |
13633 | ||
13634 | static struct bp_location * | |
13635 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13636 | { | |
13637 | struct bp_location head; | |
13638 | struct bp_location *i = b->loc; | |
13639 | struct bp_location **i_link = &b->loc; | |
13640 | struct bp_location *hoisted = &head; | |
13641 | ||
13642 | if (pspace == NULL) | |
13643 | { | |
13644 | i = b->loc; | |
13645 | b->loc = NULL; | |
13646 | return i; | |
13647 | } | |
13648 | ||
13649 | head.next = NULL; | |
13650 | ||
13651 | while (i != NULL) | |
13652 | { | |
13653 | if (i->pspace == pspace) | |
13654 | { | |
13655 | *i_link = i->next; | |
13656 | i->next = NULL; | |
13657 | hoisted->next = i; | |
13658 | hoisted = i; | |
13659 | } | |
13660 | else | |
13661 | i_link = &i->next; | |
13662 | i = *i_link; | |
13663 | } | |
13664 | ||
13665 | return head.next; | |
13666 | } | |
13667 | ||
13668 | /* Create new breakpoint locations for B (a hardware or software | |
13669 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13670 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13671 | FILTER_PSPACE. Locations of other program spaces are left | |
13672 | untouched. */ | |
f1310107 | 13673 | |
0e30163f | 13674 | void |
0d381245 | 13675 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13676 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13677 | gdb::array_view<const symtab_and_line> sals, |
13678 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 VP |
13679 | { |
13680 | int i; | |
c2f4122d | 13681 | struct bp_location *existing_locations; |
0d381245 | 13682 | |
6c5b2ebe | 13683 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13684 | { |
13685 | /* Ranged breakpoints have only one start location and one end | |
13686 | location. */ | |
13687 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13688 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13689 | "multiple locations found\n"), | |
13690 | b->number); | |
13691 | return; | |
13692 | } | |
f1310107 | 13693 | |
4a64f543 MS |
13694 | /* If there's no new locations, and all existing locations are |
13695 | pending, don't do anything. This optimizes the common case where | |
13696 | all locations are in the same shared library, that was unloaded. | |
13697 | We'd like to retain the location, so that when the library is | |
13698 | loaded again, we don't loose the enabled/disabled status of the | |
13699 | individual locations. */ | |
6c5b2ebe | 13700 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13701 | return; |
13702 | ||
c2f4122d | 13703 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13704 | |
6c5b2ebe | 13705 | for (const auto &sal : sals) |
fe3f5fa8 | 13706 | { |
f8eba3c6 TT |
13707 | struct bp_location *new_loc; |
13708 | ||
6c5b2ebe | 13709 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13710 | |
6c5b2ebe | 13711 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13712 | |
0d381245 VP |
13713 | /* Reparse conditions, they might contain references to the |
13714 | old symtab. */ | |
13715 | if (b->cond_string != NULL) | |
13716 | { | |
bbc13ae3 | 13717 | const char *s; |
fe3f5fa8 | 13718 | |
0d381245 | 13719 | s = b->cond_string; |
492d29ea | 13720 | TRY |
0d381245 | 13721 | { |
6c5b2ebe PA |
13722 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13723 | block_for_pc (sal.pc), | |
0d381245 VP |
13724 | 0); |
13725 | } | |
492d29ea | 13726 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13727 | { |
3e43a32a MS |
13728 | warning (_("failed to reevaluate condition " |
13729 | "for breakpoint %d: %s"), | |
0d381245 VP |
13730 | b->number, e.message); |
13731 | new_loc->enabled = 0; | |
13732 | } | |
492d29ea | 13733 | END_CATCH |
0d381245 | 13734 | } |
fe3f5fa8 | 13735 | |
6c5b2ebe | 13736 | if (!sals_end.empty ()) |
f1310107 | 13737 | { |
6c5b2ebe | 13738 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13739 | |
6c5b2ebe | 13740 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13741 | } |
0d381245 | 13742 | } |
fe3f5fa8 | 13743 | |
4a64f543 MS |
13744 | /* If possible, carry over 'disable' status from existing |
13745 | breakpoints. */ | |
0d381245 VP |
13746 | { |
13747 | struct bp_location *e = existing_locations; | |
776592bf DE |
13748 | /* If there are multiple breakpoints with the same function name, |
13749 | e.g. for inline functions, comparing function names won't work. | |
13750 | Instead compare pc addresses; this is just a heuristic as things | |
13751 | may have moved, but in practice it gives the correct answer | |
13752 | often enough until a better solution is found. */ | |
13753 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13754 | ||
0d381245 VP |
13755 | for (; e; e = e->next) |
13756 | { | |
13757 | if (!e->enabled && e->function_name) | |
13758 | { | |
13759 | struct bp_location *l = b->loc; | |
776592bf DE |
13760 | if (have_ambiguous_names) |
13761 | { | |
13762 | for (; l; l = l->next) | |
f1310107 | 13763 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13764 | { |
13765 | l->enabled = 0; | |
13766 | break; | |
13767 | } | |
13768 | } | |
13769 | else | |
13770 | { | |
13771 | for (; l; l = l->next) | |
13772 | if (l->function_name | |
13773 | && strcmp (e->function_name, l->function_name) == 0) | |
13774 | { | |
13775 | l->enabled = 0; | |
13776 | break; | |
13777 | } | |
13778 | } | |
0d381245 VP |
13779 | } |
13780 | } | |
13781 | } | |
fe3f5fa8 | 13782 | |
8d3788bd VP |
13783 | if (!locations_are_equal (existing_locations, b->loc)) |
13784 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13785 | } |
13786 | ||
f00aae0f | 13787 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13788 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13789 | ||
6c5b2ebe | 13790 | static std::vector<symtab_and_line> |
f00aae0f | 13791 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13792 | struct program_space *search_pspace, int *found) |
ef23e705 | 13793 | { |
492d29ea | 13794 | struct gdb_exception exception = exception_none; |
ef23e705 | 13795 | |
983af33b | 13796 | gdb_assert (b->ops != NULL); |
ef23e705 | 13797 | |
6c5b2ebe PA |
13798 | std::vector<symtab_and_line> sals; |
13799 | ||
492d29ea | 13800 | TRY |
ef23e705 | 13801 | { |
6c5b2ebe | 13802 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13803 | } |
492d29ea | 13804 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13805 | { |
13806 | int not_found_and_ok = 0; | |
492d29ea PA |
13807 | |
13808 | exception = e; | |
13809 | ||
ef23e705 TJB |
13810 | /* For pending breakpoints, it's expected that parsing will |
13811 | fail until the right shared library is loaded. User has | |
13812 | already told to create pending breakpoints and don't need | |
13813 | extra messages. If breakpoint is in bp_shlib_disabled | |
13814 | state, then user already saw the message about that | |
13815 | breakpoint being disabled, and don't want to see more | |
13816 | errors. */ | |
58438ac1 | 13817 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13818 | && (b->condition_not_parsed |
13819 | || (b->loc != NULL | |
13820 | && search_pspace != NULL | |
13821 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13822 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13823 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13824 | || b->enable_state == bp_disabled)) |
13825 | not_found_and_ok = 1; | |
13826 | ||
13827 | if (!not_found_and_ok) | |
13828 | { | |
13829 | /* We surely don't want to warn about the same breakpoint | |
13830 | 10 times. One solution, implemented here, is disable | |
13831 | the breakpoint on error. Another solution would be to | |
13832 | have separate 'warning emitted' flag. Since this | |
13833 | happens only when a binary has changed, I don't know | |
13834 | which approach is better. */ | |
13835 | b->enable_state = bp_disabled; | |
13836 | throw_exception (e); | |
13837 | } | |
13838 | } | |
492d29ea | 13839 | END_CATCH |
ef23e705 | 13840 | |
492d29ea | 13841 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13842 | { |
6c5b2ebe PA |
13843 | for (auto &sal : sals) |
13844 | resolve_sal_pc (&sal); | |
f00aae0f | 13845 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13846 | { |
ed1d1739 KS |
13847 | char *cond_string, *extra_string; |
13848 | int thread, task; | |
ef23e705 | 13849 | |
6c5b2ebe | 13850 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13851 | &cond_string, &thread, &task, |
13852 | &extra_string); | |
f00aae0f | 13853 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13854 | if (cond_string) |
13855 | b->cond_string = cond_string; | |
13856 | b->thread = thread; | |
13857 | b->task = task; | |
e7e0cddf | 13858 | if (extra_string) |
f00aae0f KS |
13859 | { |
13860 | xfree (b->extra_string); | |
13861 | b->extra_string = extra_string; | |
13862 | } | |
ef23e705 TJB |
13863 | b->condition_not_parsed = 0; |
13864 | } | |
13865 | ||
983af33b | 13866 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13867 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13868 | |
58438ac1 TT |
13869 | *found = 1; |
13870 | } | |
13871 | else | |
13872 | *found = 0; | |
ef23e705 TJB |
13873 | |
13874 | return sals; | |
13875 | } | |
13876 | ||
348d480f PA |
13877 | /* The default re_set method, for typical hardware or software |
13878 | breakpoints. Reevaluate the breakpoint and recreate its | |
13879 | locations. */ | |
13880 | ||
13881 | static void | |
28010a5d | 13882 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13883 | { |
c2f4122d | 13884 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13885 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13886 | |
6c5b2ebe PA |
13887 | int found; |
13888 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13889 | filter_pspace, &found); | |
ef23e705 | 13890 | if (found) |
6c5b2ebe | 13891 | expanded = std::move (sals); |
ef23e705 | 13892 | |
f00aae0f | 13893 | if (b->location_range_end != NULL) |
f1310107 | 13894 | { |
6c5b2ebe PA |
13895 | std::vector<symtab_and_line> sals_end |
13896 | = location_to_sals (b, b->location_range_end.get (), | |
13897 | filter_pspace, &found); | |
f1310107 | 13898 | if (found) |
6c5b2ebe | 13899 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13900 | } |
13901 | ||
c2f4122d | 13902 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13903 | } |
13904 | ||
983af33b SDJ |
13905 | /* Default method for creating SALs from an address string. It basically |
13906 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13907 | ||
13908 | static void | |
f00aae0f KS |
13909 | create_sals_from_location_default (const struct event_location *location, |
13910 | struct linespec_result *canonical, | |
13911 | enum bptype type_wanted) | |
983af33b | 13912 | { |
f00aae0f | 13913 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13914 | } |
13915 | ||
13916 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13917 | function for the `create_breakpoints_sal' method of | |
13918 | breakpoint_ops. */ | |
13919 | ||
13920 | static void | |
13921 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13922 | struct linespec_result *canonical, | |
e1e01040 PA |
13923 | gdb::unique_xmalloc_ptr<char> cond_string, |
13924 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13925 | enum bptype type_wanted, |
13926 | enum bpdisp disposition, | |
13927 | int thread, | |
13928 | int task, int ignore_count, | |
13929 | const struct breakpoint_ops *ops, | |
13930 | int from_tty, int enabled, | |
44f238bb | 13931 | int internal, unsigned flags) |
983af33b | 13932 | { |
e1e01040 PA |
13933 | create_breakpoints_sal (gdbarch, canonical, |
13934 | std::move (cond_string), | |
13935 | std::move (extra_string), | |
983af33b SDJ |
13936 | type_wanted, disposition, |
13937 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13938 | enabled, internal, flags); |
983af33b SDJ |
13939 | } |
13940 | ||
13941 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13942 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13943 | |
6c5b2ebe | 13944 | static std::vector<symtab_and_line> |
f00aae0f KS |
13945 | decode_location_default (struct breakpoint *b, |
13946 | const struct event_location *location, | |
6c5b2ebe | 13947 | struct program_space *search_pspace) |
983af33b SDJ |
13948 | { |
13949 | struct linespec_result canonical; | |
13950 | ||
c2f4122d | 13951 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13952 | (struct symtab *) NULL, 0, |
13953 | &canonical, multiple_symbols_all, | |
13954 | b->filter); | |
13955 | ||
13956 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13957 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13958 | |
6c5b2ebe | 13959 | if (!canonical.lsals.empty ()) |
983af33b | 13960 | { |
6c5b2ebe PA |
13961 | const linespec_sals &lsal = canonical.lsals[0]; |
13962 | return std::move (lsal.sals); | |
983af33b | 13963 | } |
6c5b2ebe | 13964 | return {}; |
983af33b SDJ |
13965 | } |
13966 | ||
bf469271 | 13967 | /* Reset a breakpoint. */ |
c906108c | 13968 | |
bf469271 PA |
13969 | static void |
13970 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13971 | { |
fdf44873 TT |
13972 | input_radix = b->input_radix; |
13973 | set_language (b->language); | |
c906108c | 13974 | |
348d480f | 13975 | b->ops->re_set (b); |
c906108c SS |
13976 | } |
13977 | ||
c2f4122d PA |
13978 | /* Re-set breakpoint locations for the current program space. |
13979 | Locations bound to other program spaces are left untouched. */ | |
13980 | ||
c906108c | 13981 | void |
69de3c6a | 13982 | breakpoint_re_set (void) |
c906108c | 13983 | { |
35df4500 | 13984 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13985 | |
c5aa993b | 13986 | { |
fdf44873 TT |
13987 | scoped_restore_current_language save_language; |
13988 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13989 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13990 | |
5ed8105e PA |
13991 | /* Note: we must not try to insert locations until after all |
13992 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13993 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13994 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13995 | |
5ed8105e PA |
13996 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13997 | { | |
bf469271 PA |
13998 | TRY |
13999 | { | |
14000 | breakpoint_re_set_one (b); | |
14001 | } | |
14002 | CATCH (ex, RETURN_MASK_ALL) | |
14003 | { | |
14004 | exception_fprintf (gdb_stderr, ex, | |
14005 | "Error in re-setting breakpoint %d: ", | |
14006 | b->number); | |
14007 | } | |
14008 | END_CATCH | |
5ed8105e | 14009 | } |
5ed8105e PA |
14010 | |
14011 | jit_breakpoint_re_set (); | |
14012 | } | |
6c95b8df | 14013 | |
af02033e PP |
14014 | create_overlay_event_breakpoint (); |
14015 | create_longjmp_master_breakpoint (); | |
14016 | create_std_terminate_master_breakpoint (); | |
186c406b | 14017 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14018 | |
14019 | /* Now we can insert. */ | |
14020 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14021 | } |
14022 | \f | |
c906108c SS |
14023 | /* Reset the thread number of this breakpoint: |
14024 | ||
14025 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14026 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14027 | void |
fba45db2 | 14028 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14029 | { |
14030 | if (b->thread != -1) | |
14031 | { | |
39f77062 | 14032 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14033 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14034 | |
14035 | /* We're being called after following a fork. The new fork is | |
14036 | selected as current, and unless this was a vfork will have a | |
14037 | different program space from the original thread. Reset that | |
14038 | as well. */ | |
14039 | b->loc->pspace = current_program_space; | |
c906108c SS |
14040 | } |
14041 | } | |
14042 | ||
03ac34d5 MS |
14043 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14044 | If from_tty is nonzero, it prints a message to that effect, | |
14045 | which ends with a period (no newline). */ | |
14046 | ||
c906108c | 14047 | void |
fba45db2 | 14048 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14049 | { |
52f0bd74 | 14050 | struct breakpoint *b; |
c906108c SS |
14051 | |
14052 | if (count < 0) | |
14053 | count = 0; | |
14054 | ||
14055 | ALL_BREAKPOINTS (b) | |
14056 | if (b->number == bptnum) | |
c5aa993b | 14057 | { |
d77f58be SS |
14058 | if (is_tracepoint (b)) |
14059 | { | |
14060 | if (from_tty && count != 0) | |
14061 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14062 | bptnum); | |
14063 | return; | |
14064 | } | |
14065 | ||
c5aa993b | 14066 | b->ignore_count = count; |
221ea385 KS |
14067 | if (from_tty) |
14068 | { | |
14069 | if (count == 0) | |
3e43a32a MS |
14070 | printf_filtered (_("Will stop next time " |
14071 | "breakpoint %d is reached."), | |
221ea385 KS |
14072 | bptnum); |
14073 | else if (count == 1) | |
a3f17187 | 14074 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14075 | bptnum); |
14076 | else | |
3e43a32a MS |
14077 | printf_filtered (_("Will ignore next %d " |
14078 | "crossings of breakpoint %d."), | |
221ea385 KS |
14079 | count, bptnum); |
14080 | } | |
8d3788bd | 14081 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14082 | return; |
14083 | } | |
c906108c | 14084 | |
8a3fe4f8 | 14085 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14086 | } |
14087 | ||
c906108c SS |
14088 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14089 | ||
14090 | static void | |
0b39b52e | 14091 | ignore_command (const char *args, int from_tty) |
c906108c | 14092 | { |
0b39b52e | 14093 | const char *p = args; |
52f0bd74 | 14094 | int num; |
c906108c SS |
14095 | |
14096 | if (p == 0) | |
e2e0b3e5 | 14097 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14098 | |
c906108c | 14099 | num = get_number (&p); |
5c44784c | 14100 | if (num == 0) |
8a3fe4f8 | 14101 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14102 | if (*p == 0) |
8a3fe4f8 | 14103 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14104 | |
14105 | set_ignore_count (num, | |
14106 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14107 | from_tty); | |
221ea385 KS |
14108 | if (from_tty) |
14109 | printf_filtered ("\n"); | |
c906108c SS |
14110 | } |
14111 | \f | |
d0fe4701 XR |
14112 | |
14113 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14114 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14115 | |
14116 | static void | |
d0fe4701 XR |
14117 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14118 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14119 | { |
d0fe4701 XR |
14120 | if (bp_num_range.first == 0) |
14121 | { | |
14122 | warning (_("bad breakpoint number at or near '%d'"), | |
14123 | bp_num_range.first); | |
14124 | } | |
14125 | else | |
c906108c | 14126 | { |
d0fe4701 | 14127 | struct breakpoint *b, *tmp; |
197f0a60 | 14128 | |
d0fe4701 | 14129 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14130 | { |
d0fe4701 XR |
14131 | bool match = false; |
14132 | ||
5c44784c | 14133 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14134 | if (b->number == i) |
5c44784c | 14135 | { |
bfd28288 | 14136 | match = true; |
48649e1b | 14137 | function (b); |
11cf8741 | 14138 | break; |
5c44784c | 14139 | } |
bfd28288 | 14140 | if (!match) |
d0fe4701 | 14141 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14142 | } |
c906108c SS |
14143 | } |
14144 | } | |
14145 | ||
d0fe4701 XR |
14146 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14147 | ARGS. */ | |
14148 | ||
14149 | static void | |
14150 | map_breakpoint_numbers (const char *args, | |
14151 | gdb::function_view<void (breakpoint *)> function) | |
14152 | { | |
14153 | if (args == NULL || *args == '\0') | |
14154 | error_no_arg (_("one or more breakpoint numbers")); | |
14155 | ||
14156 | number_or_range_parser parser (args); | |
14157 | ||
14158 | while (!parser.finished ()) | |
14159 | { | |
14160 | int num = parser.get_number (); | |
14161 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14162 | } | |
14163 | } | |
14164 | ||
14165 | /* Return the breakpoint location structure corresponding to the | |
14166 | BP_NUM and LOC_NUM values. */ | |
14167 | ||
0d381245 | 14168 | static struct bp_location * |
d0fe4701 | 14169 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14170 | { |
0d381245 | 14171 | struct breakpoint *b; |
0d381245 VP |
14172 | |
14173 | ALL_BREAKPOINTS (b) | |
14174 | if (b->number == bp_num) | |
14175 | { | |
14176 | break; | |
14177 | } | |
14178 | ||
14179 | if (!b || b->number != bp_num) | |
d0fe4701 | 14180 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14181 | |
0d381245 | 14182 | if (loc_num == 0) |
d0fe4701 | 14183 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14184 | |
d0fe4701 XR |
14185 | int n = 0; |
14186 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14187 | if (++n == loc_num) | |
14188 | return loc; | |
14189 | ||
14190 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14191 | } |
14192 | ||
95e95a6d PA |
14193 | /* Modes of operation for extract_bp_num. */ |
14194 | enum class extract_bp_kind | |
14195 | { | |
14196 | /* Extracting a breakpoint number. */ | |
14197 | bp, | |
14198 | ||
14199 | /* Extracting a location number. */ | |
14200 | loc, | |
14201 | }; | |
14202 | ||
14203 | /* Extract a breakpoint or location number (as determined by KIND) | |
14204 | from the string starting at START. TRAILER is a character which | |
14205 | can be found after the number. If you don't want a trailer, use | |
14206 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14207 | string. This always returns a positive integer. */ | |
14208 | ||
14209 | static int | |
14210 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14211 | int trailer, const char **end_out = NULL) | |
14212 | { | |
14213 | const char *end = start; | |
14214 | int num = get_number_trailer (&end, trailer); | |
14215 | if (num < 0) | |
14216 | error (kind == extract_bp_kind::bp | |
14217 | ? _("Negative breakpoint number '%.*s'") | |
14218 | : _("Negative breakpoint location number '%.*s'"), | |
14219 | int (end - start), start); | |
14220 | if (num == 0) | |
14221 | error (kind == extract_bp_kind::bp | |
14222 | ? _("Bad breakpoint number '%.*s'") | |
14223 | : _("Bad breakpoint location number '%.*s'"), | |
14224 | int (end - start), start); | |
14225 | ||
14226 | if (end_out != NULL) | |
14227 | *end_out = end; | |
14228 | return num; | |
14229 | } | |
14230 | ||
14231 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14232 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14233 | representing the (inclusive) range. The returned pair's elements | |
14234 | are always positive integers. */ | |
14235 | ||
14236 | static std::pair<int, int> | |
14237 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14238 | const std::string &arg, | |
14239 | std::string::size_type arg_offset) | |
14240 | { | |
14241 | std::pair<int, int> range; | |
14242 | const char *bp_loc = &arg[arg_offset]; | |
14243 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14244 | if (dash != std::string::npos) | |
14245 | { | |
14246 | /* bp_loc is a range (x-z). */ | |
14247 | if (arg.length () == dash + 1) | |
14248 | error (kind == extract_bp_kind::bp | |
14249 | ? _("Bad breakpoint number at or near: '%s'") | |
14250 | : _("Bad breakpoint location number at or near: '%s'"), | |
14251 | bp_loc); | |
14252 | ||
14253 | const char *end; | |
14254 | const char *start_first = bp_loc; | |
14255 | const char *start_second = &arg[dash + 1]; | |
14256 | range.first = extract_bp_num (kind, start_first, '-'); | |
14257 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14258 | ||
14259 | if (range.first > range.second) | |
14260 | error (kind == extract_bp_kind::bp | |
14261 | ? _("Inverted breakpoint range at '%.*s'") | |
14262 | : _("Inverted breakpoint location range at '%.*s'"), | |
14263 | int (end - start_first), start_first); | |
14264 | } | |
14265 | else | |
14266 | { | |
14267 | /* bp_loc is a single value. */ | |
14268 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14269 | range.second = range.first; | |
14270 | } | |
14271 | return range; | |
14272 | } | |
14273 | ||
d0fe4701 XR |
14274 | /* Extract the breakpoint/location range specified by ARG. Returns |
14275 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14276 | BP_LOC_RANGE. | |
14277 | ||
14278 | ARG may be in any of the following forms: | |
14279 | ||
14280 | x where 'x' is a breakpoint number. | |
14281 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14282 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14283 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14284 | location number range. | |
14285 | */ | |
14286 | ||
cc638e86 | 14287 | static void |
d0fe4701 XR |
14288 | extract_bp_number_and_location (const std::string &arg, |
14289 | std::pair<int, int> &bp_num_range, | |
14290 | std::pair<int, int> &bp_loc_range) | |
14291 | { | |
14292 | std::string::size_type dot = arg.find ('.'); | |
14293 | ||
14294 | if (dot != std::string::npos) | |
14295 | { | |
14296 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14297 | ||
14298 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14299 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14300 | |
95e95a6d PA |
14301 | bp_num_range.first |
14302 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14303 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14304 | |
95e95a6d PA |
14305 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14306 | arg, dot + 1); | |
d0fe4701 XR |
14307 | } |
14308 | else | |
14309 | { | |
14310 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14311 | |
95e95a6d | 14312 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14313 | bp_loc_range.first = 0; |
14314 | bp_loc_range.second = 0; | |
14315 | } | |
d0fe4701 XR |
14316 | } |
14317 | ||
14318 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14319 | specifies whether to enable or disable. */ | |
14320 | ||
14321 | static void | |
14322 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14323 | { | |
14324 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14325 | if (loc != NULL) | |
14326 | { | |
14327 | if (loc->enabled != enable) | |
14328 | { | |
14329 | loc->enabled = enable; | |
14330 | mark_breakpoint_location_modified (loc); | |
14331 | } | |
14332 | if (target_supports_enable_disable_tracepoint () | |
14333 | && current_trace_status ()->running && loc->owner | |
14334 | && is_tracepoint (loc->owner)) | |
14335 | target_disable_tracepoint (loc); | |
14336 | } | |
14337 | update_global_location_list (UGLL_DONT_INSERT); | |
14338 | } | |
14339 | ||
14340 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14341 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14342 | (inclusive) range of location numbers of that breakpoint to | |
14343 | enable/disable. ENABLE specifies whether to enable or disable the | |
14344 | location. */ | |
14345 | ||
14346 | static void | |
14347 | enable_disable_breakpoint_location_range (int bp_num, | |
14348 | std::pair<int, int> &bp_loc_range, | |
14349 | bool enable) | |
14350 | { | |
14351 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14352 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14353 | } | |
0d381245 | 14354 | |
1900040c MS |
14355 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14356 | If from_tty is nonzero, it prints a message to that effect, | |
14357 | which ends with a period (no newline). */ | |
14358 | ||
c906108c | 14359 | void |
fba45db2 | 14360 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14361 | { |
14362 | /* Never disable a watchpoint scope breakpoint; we want to | |
14363 | hit them when we leave scope so we can delete both the | |
14364 | watchpoint and its scope breakpoint at that time. */ | |
14365 | if (bpt->type == bp_watchpoint_scope) | |
14366 | return; | |
14367 | ||
b5de0fa7 | 14368 | bpt->enable_state = bp_disabled; |
c906108c | 14369 | |
b775012e LM |
14370 | /* Mark breakpoint locations modified. */ |
14371 | mark_breakpoint_modified (bpt); | |
14372 | ||
d248b706 KY |
14373 | if (target_supports_enable_disable_tracepoint () |
14374 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14375 | { | |
14376 | struct bp_location *location; | |
14377 | ||
14378 | for (location = bpt->loc; location; location = location->next) | |
14379 | target_disable_tracepoint (location); | |
14380 | } | |
14381 | ||
44702360 | 14382 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14383 | |
8d3788bd | 14384 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14385 | } |
14386 | ||
d0fe4701 XR |
14387 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14388 | specified in ARGS. ARGS may be in any of the formats handled by | |
14389 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14390 | or disable the breakpoints/locations. */ | |
14391 | ||
c906108c | 14392 | static void |
d0fe4701 | 14393 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14394 | { |
c906108c | 14395 | if (args == 0) |
46c6471b PA |
14396 | { |
14397 | struct breakpoint *bpt; | |
14398 | ||
14399 | ALL_BREAKPOINTS (bpt) | |
14400 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14401 | { |
14402 | if (enable) | |
14403 | enable_breakpoint (bpt); | |
14404 | else | |
14405 | disable_breakpoint (bpt); | |
14406 | } | |
46c6471b | 14407 | } |
9eaabc75 | 14408 | else |
0d381245 | 14409 | { |
cb791d59 | 14410 | std::string num = extract_arg (&args); |
9eaabc75 | 14411 | |
cb791d59 | 14412 | while (!num.empty ()) |
d248b706 | 14413 | { |
d0fe4701 | 14414 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14415 | |
cc638e86 PA |
14416 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14417 | ||
14418 | if (bp_loc_range.first == bp_loc_range.second | |
14419 | && bp_loc_range.first == 0) | |
d0fe4701 | 14420 | { |
cc638e86 PA |
14421 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14422 | map_breakpoint_number_range (bp_num_range, | |
14423 | enable | |
14424 | ? enable_breakpoint | |
14425 | : disable_breakpoint); | |
14426 | } | |
14427 | else | |
14428 | { | |
14429 | /* Handle breakpoint ids with formats 'x.y' or | |
14430 | 'x.y-z'. */ | |
14431 | enable_disable_breakpoint_location_range | |
14432 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14433 | } |
9eaabc75 | 14434 | num = extract_arg (&args); |
d248b706 | 14435 | } |
0d381245 | 14436 | } |
c906108c SS |
14437 | } |
14438 | ||
d0fe4701 XR |
14439 | /* The disable command disables the specified breakpoints/locations |
14440 | (or all defined breakpoints) so they're no longer effective in | |
14441 | stopping the inferior. ARGS may be in any of the forms defined in | |
14442 | extract_bp_number_and_location. */ | |
14443 | ||
14444 | static void | |
14445 | disable_command (const char *args, int from_tty) | |
14446 | { | |
14447 | enable_disable_command (args, from_tty, false); | |
14448 | } | |
14449 | ||
c906108c | 14450 | static void |
816338b5 SS |
14451 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14452 | int count) | |
c906108c | 14453 | { |
afe38095 | 14454 | int target_resources_ok; |
c906108c SS |
14455 | |
14456 | if (bpt->type == bp_hardware_breakpoint) | |
14457 | { | |
14458 | int i; | |
c5aa993b | 14459 | i = hw_breakpoint_used_count (); |
53a5351d | 14460 | target_resources_ok = |
d92524f1 | 14461 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14462 | i + 1, 0); |
c906108c | 14463 | if (target_resources_ok == 0) |
8a3fe4f8 | 14464 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14465 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14466 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14467 | } |
14468 | ||
cc60f2e3 | 14469 | if (is_watchpoint (bpt)) |
c906108c | 14470 | { |
d07205c2 | 14471 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14472 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14473 | |
492d29ea | 14474 | TRY |
c906108c | 14475 | { |
3a5c3e22 PA |
14476 | struct watchpoint *w = (struct watchpoint *) bpt; |
14477 | ||
1e718ff1 TJB |
14478 | orig_enable_state = bpt->enable_state; |
14479 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14480 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14481 | } |
492d29ea | 14482 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14483 | { |
1e718ff1 | 14484 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14485 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14486 | bpt->number); | |
14487 | return; | |
c5aa993b | 14488 | } |
492d29ea | 14489 | END_CATCH |
c906108c | 14490 | } |
0101ce28 | 14491 | |
b775012e LM |
14492 | bpt->enable_state = bp_enabled; |
14493 | ||
14494 | /* Mark breakpoint locations modified. */ | |
14495 | mark_breakpoint_modified (bpt); | |
14496 | ||
d248b706 KY |
14497 | if (target_supports_enable_disable_tracepoint () |
14498 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14499 | { | |
14500 | struct bp_location *location; | |
14501 | ||
14502 | for (location = bpt->loc; location; location = location->next) | |
14503 | target_enable_tracepoint (location); | |
14504 | } | |
14505 | ||
b4c291bb | 14506 | bpt->disposition = disposition; |
816338b5 | 14507 | bpt->enable_count = count; |
44702360 | 14508 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14509 | |
8d3788bd | 14510 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14511 | } |
14512 | ||
fe3f5fa8 | 14513 | |
c906108c | 14514 | void |
fba45db2 | 14515 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14516 | { |
816338b5 | 14517 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14518 | } |
14519 | ||
d0fe4701 XR |
14520 | /* The enable command enables the specified breakpoints/locations (or |
14521 | all defined breakpoints) so they once again become (or continue to | |
14522 | be) effective in stopping the inferior. ARGS may be in any of the | |
14523 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14524 | |
c906108c | 14525 | static void |
981a3fb3 | 14526 | enable_command (const char *args, int from_tty) |
c906108c | 14527 | { |
d0fe4701 | 14528 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14529 | } |
14530 | ||
c906108c | 14531 | static void |
4495129a | 14532 | enable_once_command (const char *args, int from_tty) |
c906108c | 14533 | { |
48649e1b TT |
14534 | map_breakpoint_numbers |
14535 | (args, [&] (breakpoint *b) | |
14536 | { | |
14537 | iterate_over_related_breakpoints | |
14538 | (b, [&] (breakpoint *bpt) | |
14539 | { | |
14540 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14541 | }); | |
14542 | }); | |
816338b5 SS |
14543 | } |
14544 | ||
14545 | static void | |
4495129a | 14546 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14547 | { |
b9d61307 SM |
14548 | int count; |
14549 | ||
14550 | if (args == NULL) | |
14551 | error_no_arg (_("hit count")); | |
14552 | ||
14553 | count = get_number (&args); | |
816338b5 | 14554 | |
48649e1b TT |
14555 | map_breakpoint_numbers |
14556 | (args, [&] (breakpoint *b) | |
14557 | { | |
14558 | iterate_over_related_breakpoints | |
14559 | (b, [&] (breakpoint *bpt) | |
14560 | { | |
14561 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14562 | }); | |
14563 | }); | |
c906108c SS |
14564 | } |
14565 | ||
c906108c | 14566 | static void |
4495129a | 14567 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14568 | { |
48649e1b TT |
14569 | map_breakpoint_numbers |
14570 | (args, [&] (breakpoint *b) | |
14571 | { | |
14572 | iterate_over_related_breakpoints | |
14573 | (b, [&] (breakpoint *bpt) | |
14574 | { | |
14575 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14576 | }); | |
14577 | }); | |
c906108c SS |
14578 | } |
14579 | \f | |
fa8d40ab | 14580 | static void |
981a3fb3 | 14581 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14582 | { |
14583 | } | |
14584 | ||
14585 | static void | |
981a3fb3 | 14586 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14587 | { |
14588 | } | |
14589 | ||
1f3b5d1b PP |
14590 | /* Invalidate last known value of any hardware watchpoint if |
14591 | the memory which that value represents has been written to by | |
14592 | GDB itself. */ | |
14593 | ||
14594 | static void | |
8de0566d YQ |
14595 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14596 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14597 | const bfd_byte *data) |
14598 | { | |
14599 | struct breakpoint *bp; | |
14600 | ||
14601 | ALL_BREAKPOINTS (bp) | |
14602 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14603 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14604 | { |
3a5c3e22 | 14605 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14606 | |
3a5c3e22 PA |
14607 | if (wp->val_valid && wp->val) |
14608 | { | |
14609 | struct bp_location *loc; | |
14610 | ||
14611 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14612 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14613 | && loc->address + loc->length > addr | |
14614 | && addr + len > loc->address) | |
14615 | { | |
14616 | value_free (wp->val); | |
14617 | wp->val = NULL; | |
14618 | wp->val_valid = 0; | |
14619 | } | |
14620 | } | |
1f3b5d1b PP |
14621 | } |
14622 | } | |
14623 | ||
8181d85f DJ |
14624 | /* Create and insert a breakpoint for software single step. */ |
14625 | ||
14626 | void | |
6c95b8df | 14627 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14628 | const address_space *aspace, |
4a64f543 | 14629 | CORE_ADDR next_pc) |
8181d85f | 14630 | { |
7c16b83e PA |
14631 | struct thread_info *tp = inferior_thread (); |
14632 | struct symtab_and_line sal; | |
14633 | CORE_ADDR pc = next_pc; | |
8181d85f | 14634 | |
34b7e8a6 PA |
14635 | if (tp->control.single_step_breakpoints == NULL) |
14636 | { | |
14637 | tp->control.single_step_breakpoints | |
5d5658a1 | 14638 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14639 | } |
8181d85f | 14640 | |
7c16b83e PA |
14641 | sal = find_pc_line (pc, 0); |
14642 | sal.pc = pc; | |
14643 | sal.section = find_pc_overlay (pc); | |
14644 | sal.explicit_pc = 1; | |
34b7e8a6 | 14645 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14646 | |
7c16b83e | 14647 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14648 | } |
14649 | ||
93f9a11f YQ |
14650 | /* Insert single step breakpoints according to the current state. */ |
14651 | ||
14652 | int | |
14653 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14654 | { | |
f5ea389a | 14655 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14656 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14657 | |
f5ea389a | 14658 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14659 | |
a0ff9e1a | 14660 | if (!next_pcs.empty ()) |
93f9a11f | 14661 | { |
f5ea389a | 14662 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14663 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14664 | |
a0ff9e1a | 14665 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14666 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14667 | ||
93f9a11f YQ |
14668 | return 1; |
14669 | } | |
14670 | else | |
14671 | return 0; | |
14672 | } | |
14673 | ||
34b7e8a6 | 14674 | /* See breakpoint.h. */ |
f02253f1 HZ |
14675 | |
14676 | int | |
7c16b83e | 14677 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14678 | const address_space *aspace, |
7c16b83e | 14679 | CORE_ADDR pc) |
1aafd4da | 14680 | { |
7c16b83e | 14681 | struct bp_location *loc; |
1aafd4da | 14682 | |
7c16b83e PA |
14683 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14684 | if (loc->inserted | |
14685 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14686 | return 1; | |
1aafd4da | 14687 | |
7c16b83e | 14688 | return 0; |
ef370185 JB |
14689 | } |
14690 | ||
14691 | /* Check whether a software single-step breakpoint is inserted at | |
14692 | PC. */ | |
14693 | ||
14694 | int | |
accd0bcd | 14695 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14696 | CORE_ADDR pc) |
14697 | { | |
34b7e8a6 PA |
14698 | struct breakpoint *bpt; |
14699 | ||
14700 | ALL_BREAKPOINTS (bpt) | |
14701 | { | |
14702 | if (bpt->type == bp_single_step | |
14703 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14704 | return 1; | |
14705 | } | |
14706 | return 0; | |
1aafd4da UW |
14707 | } |
14708 | ||
1042e4c0 SS |
14709 | /* Tracepoint-specific operations. */ |
14710 | ||
14711 | /* Set tracepoint count to NUM. */ | |
14712 | static void | |
14713 | set_tracepoint_count (int num) | |
14714 | { | |
14715 | tracepoint_count = num; | |
4fa62494 | 14716 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14717 | } |
14718 | ||
70221824 | 14719 | static void |
0b39b52e | 14720 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14721 | { |
55aa24fb | 14722 | struct breakpoint_ops *ops; |
55aa24fb | 14723 | |
ffc2605c TT |
14724 | event_location_up location = string_to_event_location (&arg, |
14725 | current_language); | |
5b56227b | 14726 | if (location != NULL |
ffc2605c | 14727 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14728 | ops = &tracepoint_probe_breakpoint_ops; |
14729 | else | |
14730 | ops = &tracepoint_breakpoint_ops; | |
14731 | ||
558a9d82 | 14732 | create_breakpoint (get_current_arch (), |
ffc2605c | 14733 | location.get (), |
f00aae0f | 14734 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14735 | 0 /* tempflag */, |
14736 | bp_tracepoint /* type_wanted */, | |
14737 | 0 /* Ignore count */, | |
14738 | pending_break_support, | |
14739 | ops, | |
14740 | from_tty, | |
14741 | 1 /* enabled */, | |
14742 | 0 /* internal */, 0); | |
1042e4c0 SS |
14743 | } |
14744 | ||
70221824 | 14745 | static void |
0b39b52e | 14746 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14747 | { |
ffc2605c TT |
14748 | event_location_up location = string_to_event_location (&arg, |
14749 | current_language); | |
558a9d82 | 14750 | create_breakpoint (get_current_arch (), |
ffc2605c | 14751 | location.get (), |
f00aae0f | 14752 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14753 | 0 /* tempflag */, |
14754 | bp_fast_tracepoint /* type_wanted */, | |
14755 | 0 /* Ignore count */, | |
14756 | pending_break_support, | |
14757 | &tracepoint_breakpoint_ops, | |
14758 | from_tty, | |
14759 | 1 /* enabled */, | |
14760 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14761 | } |
14762 | ||
14763 | /* strace command implementation. Creates a static tracepoint. */ | |
14764 | ||
70221824 | 14765 | static void |
0b39b52e | 14766 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14767 | { |
983af33b | 14768 | struct breakpoint_ops *ops; |
ffc2605c | 14769 | event_location_up location; |
983af33b SDJ |
14770 | |
14771 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14772 | or with a normal static tracepoint. */ | |
61012eef | 14773 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14774 | { |
14775 | ops = &strace_marker_breakpoint_ops; | |
14776 | location = new_linespec_location (&arg); | |
14777 | } | |
983af33b | 14778 | else |
f00aae0f KS |
14779 | { |
14780 | ops = &tracepoint_breakpoint_ops; | |
14781 | location = string_to_event_location (&arg, current_language); | |
14782 | } | |
983af33b | 14783 | |
558a9d82 | 14784 | create_breakpoint (get_current_arch (), |
ffc2605c | 14785 | location.get (), |
f00aae0f | 14786 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14787 | 0 /* tempflag */, |
14788 | bp_static_tracepoint /* type_wanted */, | |
14789 | 0 /* Ignore count */, | |
14790 | pending_break_support, | |
14791 | ops, | |
14792 | from_tty, | |
14793 | 1 /* enabled */, | |
14794 | 0 /* internal */, 0); | |
7a697b8d SS |
14795 | } |
14796 | ||
409873ef SS |
14797 | /* Set up a fake reader function that gets command lines from a linked |
14798 | list that was acquired during tracepoint uploading. */ | |
14799 | ||
14800 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14801 | static int next_cmd; |
409873ef SS |
14802 | |
14803 | static char * | |
14804 | read_uploaded_action (void) | |
14805 | { | |
14806 | char *rslt; | |
14807 | ||
3149d8c1 | 14808 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14809 | |
3149d8c1 | 14810 | next_cmd++; |
409873ef SS |
14811 | |
14812 | return rslt; | |
14813 | } | |
14814 | ||
00bf0b85 SS |
14815 | /* Given information about a tracepoint as recorded on a target (which |
14816 | can be either a live system or a trace file), attempt to create an | |
14817 | equivalent GDB tracepoint. This is not a reliable process, since | |
14818 | the target does not necessarily have all the information used when | |
14819 | the tracepoint was originally defined. */ | |
14820 | ||
d9b3f62e | 14821 | struct tracepoint * |
00bf0b85 | 14822 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14823 | { |
f2fc3015 TT |
14824 | const char *addr_str; |
14825 | char small_buf[100]; | |
d9b3f62e | 14826 | struct tracepoint *tp; |
fd9b8c24 | 14827 | |
409873ef SS |
14828 | if (utp->at_string) |
14829 | addr_str = utp->at_string; | |
14830 | else | |
14831 | { | |
14832 | /* In the absence of a source location, fall back to raw | |
14833 | address. Since there is no way to confirm that the address | |
14834 | means the same thing as when the trace was started, warn the | |
14835 | user. */ | |
3e43a32a MS |
14836 | warning (_("Uploaded tracepoint %d has no " |
14837 | "source location, using raw address"), | |
409873ef | 14838 | utp->number); |
8c042590 | 14839 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14840 | addr_str = small_buf; |
14841 | } | |
14842 | ||
14843 | /* There's not much we can do with a sequence of bytecodes. */ | |
14844 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14845 | warning (_("Uploaded tracepoint %d condition " |
14846 | "has no source form, ignoring it"), | |
409873ef | 14847 | utp->number); |
d5551862 | 14848 | |
ffc2605c TT |
14849 | event_location_up location = string_to_event_location (&addr_str, |
14850 | current_language); | |
8cdf0e15 | 14851 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14852 | location.get (), |
f00aae0f | 14853 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14854 | 0 /* parse cond/thread */, |
8cdf0e15 | 14855 | 0 /* tempflag */, |
0fb4aa4b | 14856 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14857 | 0 /* Ignore count */, |
14858 | pending_break_support, | |
348d480f | 14859 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14860 | 0 /* from_tty */, |
84f4c1fe | 14861 | utp->enabled /* enabled */, |
44f238bb PA |
14862 | 0 /* internal */, |
14863 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14864 | return NULL; |
fd9b8c24 | 14865 | |
409873ef | 14866 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14867 | tp = get_tracepoint (tracepoint_count); |
14868 | gdb_assert (tp != NULL); | |
d5551862 | 14869 | |
00bf0b85 SS |
14870 | if (utp->pass > 0) |
14871 | { | |
8c042590 | 14872 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14873 | tp->number); |
00bf0b85 | 14874 | |
409873ef | 14875 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14876 | } |
14877 | ||
409873ef SS |
14878 | /* If we have uploaded versions of the original commands, set up a |
14879 | special-purpose "reader" function and call the usual command line | |
14880 | reader, then pass the result to the breakpoint command-setting | |
14881 | function. */ | |
3149d8c1 | 14882 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14883 | { |
93921405 | 14884 | command_line_up cmd_list; |
00bf0b85 | 14885 | |
409873ef | 14886 | this_utp = utp; |
3149d8c1 | 14887 | next_cmd = 0; |
d5551862 | 14888 | |
409873ef SS |
14889 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14890 | ||
c1fc2657 | 14891 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14892 | } |
3149d8c1 SS |
14893 | else if (!VEC_empty (char_ptr, utp->actions) |
14894 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14895 | warning (_("Uploaded tracepoint %d actions " |
14896 | "have no source form, ignoring them"), | |
409873ef | 14897 | utp->number); |
00bf0b85 | 14898 | |
f196051f | 14899 | /* Copy any status information that might be available. */ |
c1fc2657 | 14900 | tp->hit_count = utp->hit_count; |
f196051f SS |
14901 | tp->traceframe_usage = utp->traceframe_usage; |
14902 | ||
00bf0b85 | 14903 | return tp; |
d9b3f62e | 14904 | } |
00bf0b85 | 14905 | |
1042e4c0 SS |
14906 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14907 | omitted. */ | |
14908 | ||
14909 | static void | |
1d12d88f | 14910 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14911 | { |
79a45e25 | 14912 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14913 | int num_printed; |
1042e4c0 | 14914 | |
e5a67952 | 14915 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14916 | |
14917 | if (num_printed == 0) | |
1042e4c0 | 14918 | { |
e5a67952 | 14919 | if (args == NULL || *args == '\0') |
112e8700 | 14920 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14921 | else |
112e8700 | 14922 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14923 | } |
ad443146 SS |
14924 | |
14925 | default_collect_info (); | |
1042e4c0 SS |
14926 | } |
14927 | ||
4a64f543 | 14928 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14929 | Not supported by all targets. */ |
14930 | static void | |
14931 | enable_trace_command (char *args, int from_tty) | |
14932 | { | |
14933 | enable_command (args, from_tty); | |
14934 | } | |
14935 | ||
4a64f543 | 14936 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14937 | Not supported by all targets. */ |
14938 | static void | |
14939 | disable_trace_command (char *args, int from_tty) | |
14940 | { | |
14941 | disable_command (args, from_tty); | |
14942 | } | |
14943 | ||
4a64f543 | 14944 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14945 | static void |
4495129a | 14946 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14947 | { |
35df4500 | 14948 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14949 | |
14950 | dont_repeat (); | |
14951 | ||
14952 | if (arg == 0) | |
14953 | { | |
14954 | int breaks_to_delete = 0; | |
14955 | ||
14956 | /* Delete all breakpoints if no argument. | |
14957 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14958 | have to be deleted with an explicit breakpoint number |
14959 | argument. */ | |
1042e4c0 | 14960 | ALL_TRACEPOINTS (b) |
46c6471b | 14961 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14962 | { |
14963 | breaks_to_delete = 1; | |
14964 | break; | |
14965 | } | |
1042e4c0 SS |
14966 | |
14967 | /* Ask user only if there are some breakpoints to delete. */ | |
14968 | if (!from_tty | |
14969 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14970 | { | |
35df4500 | 14971 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14972 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14973 | delete_breakpoint (b); |
1042e4c0 SS |
14974 | } |
14975 | } | |
14976 | else | |
48649e1b TT |
14977 | map_breakpoint_numbers |
14978 | (arg, [&] (breakpoint *b) | |
14979 | { | |
14980 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14981 | }); | |
1042e4c0 SS |
14982 | } |
14983 | ||
197f0a60 TT |
14984 | /* Helper function for trace_pass_command. */ |
14985 | ||
14986 | static void | |
d9b3f62e | 14987 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14988 | { |
d9b3f62e | 14989 | tp->pass_count = count; |
c1fc2657 | 14990 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
14991 | if (from_tty) |
14992 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14993 | tp->number, count); |
197f0a60 TT |
14994 | } |
14995 | ||
1042e4c0 SS |
14996 | /* Set passcount for tracepoint. |
14997 | ||
14998 | First command argument is passcount, second is tracepoint number. | |
14999 | If tracepoint number omitted, apply to most recently defined. | |
15000 | Also accepts special argument "all". */ | |
15001 | ||
15002 | static void | |
0b39b52e | 15003 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 15004 | { |
d9b3f62e | 15005 | struct tracepoint *t1; |
0b39b52e | 15006 | ULONGEST count; |
1042e4c0 SS |
15007 | |
15008 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15009 | error (_("passcount command requires an " |
15010 | "argument (count + optional TP num)")); | |
1042e4c0 | 15011 | |
0b39b52e | 15012 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15013 | |
529480d0 | 15014 | args = skip_spaces (args); |
1042e4c0 SS |
15015 | if (*args && strncasecmp (args, "all", 3) == 0) |
15016 | { | |
d9b3f62e PA |
15017 | struct breakpoint *b; |
15018 | ||
1042e4c0 | 15019 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15020 | if (*args) |
15021 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15022 | |
d9b3f62e | 15023 | ALL_TRACEPOINTS (b) |
197f0a60 | 15024 | { |
d9b3f62e | 15025 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15026 | trace_pass_set_count (t1, count, from_tty); |
15027 | } | |
15028 | } | |
15029 | else if (*args == '\0') | |
1042e4c0 | 15030 | { |
5fa1d40e | 15031 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15032 | if (t1) |
197f0a60 TT |
15033 | trace_pass_set_count (t1, count, from_tty); |
15034 | } | |
15035 | else | |
15036 | { | |
bfd28288 PA |
15037 | number_or_range_parser parser (args); |
15038 | while (!parser.finished ()) | |
1042e4c0 | 15039 | { |
bfd28288 | 15040 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15041 | if (t1) |
15042 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15043 | } |
15044 | } | |
1042e4c0 SS |
15045 | } |
15046 | ||
d9b3f62e | 15047 | struct tracepoint * |
1042e4c0 SS |
15048 | get_tracepoint (int num) |
15049 | { | |
15050 | struct breakpoint *t; | |
15051 | ||
15052 | ALL_TRACEPOINTS (t) | |
15053 | if (t->number == num) | |
d9b3f62e | 15054 | return (struct tracepoint *) t; |
1042e4c0 SS |
15055 | |
15056 | return NULL; | |
15057 | } | |
15058 | ||
d5551862 SS |
15059 | /* Find the tracepoint with the given target-side number (which may be |
15060 | different from the tracepoint number after disconnecting and | |
15061 | reconnecting). */ | |
15062 | ||
d9b3f62e | 15063 | struct tracepoint * |
d5551862 SS |
15064 | get_tracepoint_by_number_on_target (int num) |
15065 | { | |
d9b3f62e | 15066 | struct breakpoint *b; |
d5551862 | 15067 | |
d9b3f62e PA |
15068 | ALL_TRACEPOINTS (b) |
15069 | { | |
15070 | struct tracepoint *t = (struct tracepoint *) b; | |
15071 | ||
15072 | if (t->number_on_target == num) | |
15073 | return t; | |
15074 | } | |
d5551862 SS |
15075 | |
15076 | return NULL; | |
15077 | } | |
15078 | ||
1042e4c0 | 15079 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15080 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15081 | If the argument is missing, the most recent tracepoint |
15082 | (tracepoint_count) is returned. */ | |
15083 | ||
d9b3f62e | 15084 | struct tracepoint * |
0b39b52e | 15085 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15086 | number_or_range_parser *parser) |
1042e4c0 | 15087 | { |
1042e4c0 SS |
15088 | struct breakpoint *t; |
15089 | int tpnum; | |
0b39b52e | 15090 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15091 | |
bfd28288 | 15092 | if (parser != NULL) |
197f0a60 | 15093 | { |
bfd28288 PA |
15094 | gdb_assert (!parser->finished ()); |
15095 | tpnum = parser->get_number (); | |
197f0a60 TT |
15096 | } |
15097 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15098 | tpnum = tracepoint_count; |
1042e4c0 | 15099 | else |
197f0a60 | 15100 | tpnum = get_number (arg); |
1042e4c0 SS |
15101 | |
15102 | if (tpnum <= 0) | |
15103 | { | |
15104 | if (instring && *instring) | |
15105 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15106 | instring); | |
15107 | else | |
5fa1d40e | 15108 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15109 | return NULL; |
15110 | } | |
15111 | ||
15112 | ALL_TRACEPOINTS (t) | |
15113 | if (t->number == tpnum) | |
15114 | { | |
d9b3f62e | 15115 | return (struct tracepoint *) t; |
1042e4c0 SS |
15116 | } |
15117 | ||
1042e4c0 SS |
15118 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15119 | return NULL; | |
15120 | } | |
15121 | ||
d9b3f62e PA |
15122 | void |
15123 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15124 | { | |
15125 | if (b->thread != -1) | |
15126 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15127 | ||
15128 | if (b->task != 0) | |
15129 | fprintf_unfiltered (fp, " task %d", b->task); | |
15130 | ||
15131 | fprintf_unfiltered (fp, "\n"); | |
15132 | } | |
15133 | ||
6149aea9 PA |
15134 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15135 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15136 | on each breakpoint and only include the ones for which it returns | |
15137 | non-zero. */ | |
15138 | ||
1042e4c0 | 15139 | static void |
4495129a | 15140 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15141 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15142 | { |
15143 | struct breakpoint *tp; | |
6149aea9 | 15144 | int any = 0; |
6149aea9 | 15145 | int extra_trace_bits = 0; |
1042e4c0 | 15146 | |
6149aea9 PA |
15147 | if (filename == 0 || *filename == 0) |
15148 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15149 | |
15150 | /* See if we have anything to save. */ | |
6149aea9 | 15151 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15152 | { |
6149aea9 | 15153 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15154 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15155 | continue; |
15156 | ||
15157 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15158 | if (filter && !filter (tp)) | |
15159 | continue; | |
15160 | ||
15161 | any = 1; | |
15162 | ||
15163 | if (is_tracepoint (tp)) | |
15164 | { | |
15165 | extra_trace_bits = 1; | |
15166 | ||
15167 | /* We can stop searching. */ | |
15168 | break; | |
15169 | } | |
1042e4c0 | 15170 | } |
6149aea9 PA |
15171 | |
15172 | if (!any) | |
1042e4c0 | 15173 | { |
6149aea9 | 15174 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15175 | return; |
15176 | } | |
15177 | ||
ee0c3293 | 15178 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15179 | |
15180 | stdio_file fp; | |
15181 | ||
ee0c3293 | 15182 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15183 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15184 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15185 | |
6149aea9 | 15186 | if (extra_trace_bits) |
d7e74731 | 15187 | save_trace_state_variables (&fp); |
8bf6485c | 15188 | |
6149aea9 | 15189 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15190 | { |
6149aea9 | 15191 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15192 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15193 | continue; |
8bf6485c | 15194 | |
6149aea9 PA |
15195 | /* If we have a filter, only save the breakpoints it accepts. */ |
15196 | if (filter && !filter (tp)) | |
15197 | continue; | |
15198 | ||
d7e74731 | 15199 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15200 | |
6149aea9 PA |
15201 | /* Note, we can't rely on tp->number for anything, as we can't |
15202 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15203 | instead. */ | |
15204 | ||
15205 | if (tp->cond_string) | |
d7e74731 | 15206 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15207 | |
15208 | if (tp->ignore_count) | |
d7e74731 | 15209 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15210 | |
2d9442cc | 15211 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15212 | { |
d7e74731 | 15213 | fp.puts (" commands\n"); |
a7bdde9e | 15214 | |
d7e74731 | 15215 | current_uiout->redirect (&fp); |
492d29ea | 15216 | TRY |
1042e4c0 | 15217 | { |
d1b0a7bf | 15218 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15219 | } |
492d29ea PA |
15220 | CATCH (ex, RETURN_MASK_ALL) |
15221 | { | |
112e8700 | 15222 | current_uiout->redirect (NULL); |
492d29ea PA |
15223 | throw_exception (ex); |
15224 | } | |
15225 | END_CATCH | |
1042e4c0 | 15226 | |
112e8700 | 15227 | current_uiout->redirect (NULL); |
d7e74731 | 15228 | fp.puts (" end\n"); |
1042e4c0 | 15229 | } |
6149aea9 PA |
15230 | |
15231 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15232 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15233 | |
15234 | /* If this is a multi-location breakpoint, check if the locations | |
15235 | should be individually disabled. Watchpoint locations are | |
15236 | special, and not user visible. */ | |
15237 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15238 | { | |
15239 | struct bp_location *loc; | |
15240 | int n = 1; | |
15241 | ||
15242 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15243 | if (!loc->enabled) | |
d7e74731 | 15244 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15245 | } |
1042e4c0 | 15246 | } |
8bf6485c | 15247 | |
6149aea9 | 15248 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15249 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15250 | |
1042e4c0 | 15251 | if (from_tty) |
ee0c3293 | 15252 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15253 | } |
15254 | ||
15255 | /* The `save breakpoints' command. */ | |
15256 | ||
15257 | static void | |
4495129a | 15258 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15259 | { |
15260 | save_breakpoints (args, from_tty, NULL); | |
15261 | } | |
15262 | ||
15263 | /* The `save tracepoints' command. */ | |
15264 | ||
15265 | static void | |
4495129a | 15266 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15267 | { |
15268 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15269 | } |
15270 | ||
15271 | /* Create a vector of all tracepoints. */ | |
15272 | ||
15273 | VEC(breakpoint_p) * | |
eeae04df | 15274 | all_tracepoints (void) |
1042e4c0 SS |
15275 | { |
15276 | VEC(breakpoint_p) *tp_vec = 0; | |
15277 | struct breakpoint *tp; | |
15278 | ||
15279 | ALL_TRACEPOINTS (tp) | |
15280 | { | |
15281 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15282 | } | |
15283 | ||
15284 | return tp_vec; | |
15285 | } | |
15286 | ||
c906108c | 15287 | \f |
629500fa KS |
15288 | /* This help string is used to consolidate all the help string for specifying |
15289 | locations used by several commands. */ | |
15290 | ||
15291 | #define LOCATION_HELP_STRING \ | |
15292 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15293 | source filename, function name, label name, and line number.\n\ | |
15294 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15295 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15296 | \"factorial.c:fact:the_top\".\n\ | |
15297 | \n\ | |
15298 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15299 | program. Example: To specify the fourth byte past the start function\n\ | |
15300 | \"main\", use \"*main + 4\".\n\ | |
15301 | \n\ | |
15302 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15303 | syntax to specify location parameters.\n\ | |
15304 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15305 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15306 | -function fact -label the_top\".\n" | |
15307 | ||
4a64f543 MS |
15308 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15309 | commands. It is defined as a macro to prevent duplication. | |
15310 | COMMAND should be a string constant containing the name of the | |
15311 | command. */ | |
629500fa | 15312 | |
31e2b00f | 15313 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15314 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15315 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15316 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15317 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15318 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15319 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15320 | below.\n\ | |
15321 | \n\ | |
dc10affe PA |
15322 | With no LOCATION, uses current execution address of the selected\n\ |
15323 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15324 | \n\ |
15325 | THREADNUM is the number from \"info threads\".\n\ | |
15326 | CONDITION is a boolean expression.\n\ | |
629500fa | 15327 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15328 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15329 | conditions are different.\n\ | |
31e2b00f AS |
15330 | \n\ |
15331 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15332 | ||
44feb3ce TT |
15333 | /* List of subcommands for "catch". */ |
15334 | static struct cmd_list_element *catch_cmdlist; | |
15335 | ||
15336 | /* List of subcommands for "tcatch". */ | |
15337 | static struct cmd_list_element *tcatch_cmdlist; | |
15338 | ||
9ac4176b | 15339 | void |
a121b7c1 | 15340 | add_catch_command (const char *name, const char *docstring, |
82ae6c8d | 15341 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15342 | completer_ftype *completer, |
44feb3ce TT |
15343 | void *user_data_catch, |
15344 | void *user_data_tcatch) | |
15345 | { | |
15346 | struct cmd_list_element *command; | |
15347 | ||
0450cc4c | 15348 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15349 | &catch_cmdlist); |
15350 | set_cmd_sfunc (command, sfunc); | |
15351 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15352 | set_cmd_completer (command, completer); |
44feb3ce | 15353 | |
0450cc4c | 15354 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15355 | &tcatch_cmdlist); |
15356 | set_cmd_sfunc (command, sfunc); | |
15357 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15358 | set_cmd_completer (command, completer); |
44feb3ce TT |
15359 | } |
15360 | ||
6149aea9 | 15361 | static void |
981a3fb3 | 15362 | save_command (const char *arg, int from_tty) |
6149aea9 | 15363 | { |
3e43a32a MS |
15364 | printf_unfiltered (_("\"save\" must be followed by " |
15365 | "the name of a save subcommand.\n")); | |
635c7e8a | 15366 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15367 | } |
15368 | ||
84f4c1fe PM |
15369 | struct breakpoint * |
15370 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15371 | void *data) | |
15372 | { | |
35df4500 | 15373 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15374 | |
35df4500 | 15375 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15376 | { |
15377 | if ((*callback) (b, data)) | |
15378 | return b; | |
15379 | } | |
15380 | ||
15381 | return NULL; | |
15382 | } | |
15383 | ||
0574c78f GB |
15384 | /* Zero if any of the breakpoint's locations could be a location where |
15385 | functions have been inlined, nonzero otherwise. */ | |
15386 | ||
15387 | static int | |
15388 | is_non_inline_function (struct breakpoint *b) | |
15389 | { | |
15390 | /* The shared library event breakpoint is set on the address of a | |
15391 | non-inline function. */ | |
15392 | if (b->type == bp_shlib_event) | |
15393 | return 1; | |
15394 | ||
15395 | return 0; | |
15396 | } | |
15397 | ||
15398 | /* Nonzero if the specified PC cannot be a location where functions | |
15399 | have been inlined. */ | |
15400 | ||
15401 | int | |
accd0bcd | 15402 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15403 | const struct target_waitstatus *ws) |
0574c78f GB |
15404 | { |
15405 | struct breakpoint *b; | |
15406 | struct bp_location *bl; | |
15407 | ||
15408 | ALL_BREAKPOINTS (b) | |
15409 | { | |
15410 | if (!is_non_inline_function (b)) | |
15411 | continue; | |
15412 | ||
15413 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15414 | { | |
15415 | if (!bl->shlib_disabled | |
09ac7c10 | 15416 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15417 | return 1; |
15418 | } | |
15419 | } | |
15420 | ||
15421 | return 0; | |
15422 | } | |
15423 | ||
2f202fde JK |
15424 | /* Remove any references to OBJFILE which is going to be freed. */ |
15425 | ||
15426 | void | |
15427 | breakpoint_free_objfile (struct objfile *objfile) | |
15428 | { | |
15429 | struct bp_location **locp, *loc; | |
15430 | ||
15431 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15432 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15433 | loc->symtab = NULL; |
15434 | } | |
15435 | ||
2060206e PA |
15436 | void |
15437 | initialize_breakpoint_ops (void) | |
15438 | { | |
15439 | static int initialized = 0; | |
15440 | ||
15441 | struct breakpoint_ops *ops; | |
15442 | ||
15443 | if (initialized) | |
15444 | return; | |
15445 | initialized = 1; | |
15446 | ||
15447 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15448 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15449 | internal and momentary breakpoints, etc.). */ | |
15450 | ops = &bkpt_base_breakpoint_ops; | |
15451 | *ops = base_breakpoint_ops; | |
15452 | ops->re_set = bkpt_re_set; | |
15453 | ops->insert_location = bkpt_insert_location; | |
15454 | ops->remove_location = bkpt_remove_location; | |
15455 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15456 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15457 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15458 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15459 | |
15460 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15461 | ops = &bkpt_breakpoint_ops; | |
15462 | *ops = bkpt_base_breakpoint_ops; | |
15463 | ops->re_set = bkpt_re_set; | |
15464 | ops->resources_needed = bkpt_resources_needed; | |
15465 | ops->print_it = bkpt_print_it; | |
15466 | ops->print_mention = bkpt_print_mention; | |
15467 | ops->print_recreate = bkpt_print_recreate; | |
15468 | ||
15469 | /* Ranged breakpoints. */ | |
15470 | ops = &ranged_breakpoint_ops; | |
15471 | *ops = bkpt_breakpoint_ops; | |
15472 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15473 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15474 | ops->print_it = print_it_ranged_breakpoint; | |
15475 | ops->print_one = print_one_ranged_breakpoint; | |
15476 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15477 | ops->print_mention = print_mention_ranged_breakpoint; | |
15478 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15479 | ||
15480 | /* Internal breakpoints. */ | |
15481 | ops = &internal_breakpoint_ops; | |
15482 | *ops = bkpt_base_breakpoint_ops; | |
15483 | ops->re_set = internal_bkpt_re_set; | |
15484 | ops->check_status = internal_bkpt_check_status; | |
15485 | ops->print_it = internal_bkpt_print_it; | |
15486 | ops->print_mention = internal_bkpt_print_mention; | |
15487 | ||
15488 | /* Momentary breakpoints. */ | |
15489 | ops = &momentary_breakpoint_ops; | |
15490 | *ops = bkpt_base_breakpoint_ops; | |
15491 | ops->re_set = momentary_bkpt_re_set; | |
15492 | ops->check_status = momentary_bkpt_check_status; | |
15493 | ops->print_it = momentary_bkpt_print_it; | |
15494 | ops->print_mention = momentary_bkpt_print_mention; | |
15495 | ||
55aa24fb SDJ |
15496 | /* Probe breakpoints. */ |
15497 | ops = &bkpt_probe_breakpoint_ops; | |
15498 | *ops = bkpt_breakpoint_ops; | |
15499 | ops->insert_location = bkpt_probe_insert_location; | |
15500 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15501 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15502 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15503 | |
2060206e PA |
15504 | /* Watchpoints. */ |
15505 | ops = &watchpoint_breakpoint_ops; | |
15506 | *ops = base_breakpoint_ops; | |
15507 | ops->re_set = re_set_watchpoint; | |
15508 | ops->insert_location = insert_watchpoint; | |
15509 | ops->remove_location = remove_watchpoint; | |
15510 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15511 | ops->check_status = check_status_watchpoint; | |
15512 | ops->resources_needed = resources_needed_watchpoint; | |
15513 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15514 | ops->print_it = print_it_watchpoint; | |
15515 | ops->print_mention = print_mention_watchpoint; | |
15516 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15517 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15518 | |
15519 | /* Masked watchpoints. */ | |
15520 | ops = &masked_watchpoint_breakpoint_ops; | |
15521 | *ops = watchpoint_breakpoint_ops; | |
15522 | ops->insert_location = insert_masked_watchpoint; | |
15523 | ops->remove_location = remove_masked_watchpoint; | |
15524 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15525 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15526 | ops->print_it = print_it_masked_watchpoint; | |
15527 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15528 | ops->print_mention = print_mention_masked_watchpoint; | |
15529 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15530 | ||
15531 | /* Tracepoints. */ | |
15532 | ops = &tracepoint_breakpoint_ops; | |
15533 | *ops = base_breakpoint_ops; | |
15534 | ops->re_set = tracepoint_re_set; | |
15535 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15536 | ops->print_one_detail = tracepoint_print_one_detail; | |
15537 | ops->print_mention = tracepoint_print_mention; | |
15538 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15539 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15540 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15541 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15542 | |
55aa24fb SDJ |
15543 | /* Probe tracepoints. */ |
15544 | ops = &tracepoint_probe_breakpoint_ops; | |
15545 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15546 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15547 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15548 | |
983af33b SDJ |
15549 | /* Static tracepoints with marker (`-m'). */ |
15550 | ops = &strace_marker_breakpoint_ops; | |
15551 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15552 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15553 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15554 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15555 | |
15556 | /* Fork catchpoints. */ | |
15557 | ops = &catch_fork_breakpoint_ops; | |
15558 | *ops = base_breakpoint_ops; | |
15559 | ops->insert_location = insert_catch_fork; | |
15560 | ops->remove_location = remove_catch_fork; | |
15561 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15562 | ops->print_it = print_it_catch_fork; | |
15563 | ops->print_one = print_one_catch_fork; | |
15564 | ops->print_mention = print_mention_catch_fork; | |
15565 | ops->print_recreate = print_recreate_catch_fork; | |
15566 | ||
15567 | /* Vfork catchpoints. */ | |
15568 | ops = &catch_vfork_breakpoint_ops; | |
15569 | *ops = base_breakpoint_ops; | |
15570 | ops->insert_location = insert_catch_vfork; | |
15571 | ops->remove_location = remove_catch_vfork; | |
15572 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15573 | ops->print_it = print_it_catch_vfork; | |
15574 | ops->print_one = print_one_catch_vfork; | |
15575 | ops->print_mention = print_mention_catch_vfork; | |
15576 | ops->print_recreate = print_recreate_catch_vfork; | |
15577 | ||
15578 | /* Exec catchpoints. */ | |
15579 | ops = &catch_exec_breakpoint_ops; | |
15580 | *ops = base_breakpoint_ops; | |
2060206e PA |
15581 | ops->insert_location = insert_catch_exec; |
15582 | ops->remove_location = remove_catch_exec; | |
15583 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15584 | ops->print_it = print_it_catch_exec; | |
15585 | ops->print_one = print_one_catch_exec; | |
15586 | ops->print_mention = print_mention_catch_exec; | |
15587 | ops->print_recreate = print_recreate_catch_exec; | |
15588 | ||
edcc5120 TT |
15589 | /* Solib-related catchpoints. */ |
15590 | ops = &catch_solib_breakpoint_ops; | |
15591 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15592 | ops->insert_location = insert_catch_solib; |
15593 | ops->remove_location = remove_catch_solib; | |
15594 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15595 | ops->check_status = check_status_catch_solib; | |
15596 | ops->print_it = print_it_catch_solib; | |
15597 | ops->print_one = print_one_catch_solib; | |
15598 | ops->print_mention = print_mention_catch_solib; | |
15599 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15600 | |
15601 | ops = &dprintf_breakpoint_ops; | |
15602 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15603 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15604 | ops->resources_needed = bkpt_resources_needed; |
15605 | ops->print_it = bkpt_print_it; | |
15606 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15607 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15608 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15609 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15610 | } |
15611 | ||
8bfd80db YQ |
15612 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15613 | ||
15614 | static struct cmd_list_element *enablebreaklist = NULL; | |
15615 | ||
c906108c | 15616 | void |
fba45db2 | 15617 | _initialize_breakpoint (void) |
c906108c SS |
15618 | { |
15619 | struct cmd_list_element *c; | |
15620 | ||
2060206e PA |
15621 | initialize_breakpoint_ops (); |
15622 | ||
84acb35a | 15623 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15624 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15625 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15626 | |
55aa24fb | 15627 | breakpoint_objfile_key |
43dce439 | 15628 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15629 | |
c906108c SS |
15630 | breakpoint_chain = 0; |
15631 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15632 | before a breakpoint is set. */ | |
15633 | breakpoint_count = 0; | |
15634 | ||
1042e4c0 SS |
15635 | tracepoint_count = 0; |
15636 | ||
1bedd215 AC |
15637 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15638 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15639 | Usage is `ignore N COUNT'.")); | |
c906108c | 15640 | |
1bedd215 | 15641 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15642 | Set commands to be executed when the given breakpoints are hit.\n\ |
15643 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15644 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15645 | (e.g. `5-7').\n\ | |
c906108c SS |
15646 | With no argument, the targeted breakpoint is the last one set.\n\ |
15647 | The commands themselves follow starting on the next line.\n\ | |
15648 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15649 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15650 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15651 | |
d55637df | 15652 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15653 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15654 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15655 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15656 | set_cmd_completer (c, condition_completer); |
c906108c | 15657 | |
1bedd215 | 15658 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15659 | Set a temporary breakpoint.\n\ |
c906108c SS |
15660 | Like \"break\" except the breakpoint is only temporary,\n\ |
15661 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15662 | by using \"enable delete\" on the breakpoint number.\n\ |
15663 | \n" | |
15664 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15665 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15666 | |
1bedd215 | 15667 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15668 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15669 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15670 | some target hardware may not have this support.\n\ |
15671 | \n" | |
15672 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15673 | set_cmd_completer (c, location_completer); |
c906108c | 15674 | |
1bedd215 | 15675 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15676 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15677 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15678 | so it will be deleted when hit.\n\ |
15679 | \n" | |
15680 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15681 | set_cmd_completer (c, location_completer); |
c906108c | 15682 | |
1bedd215 AC |
15683 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15684 | Enable some breakpoints.\n\ | |
c906108c SS |
15685 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15686 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15687 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15688 | With a subcommand you can enable temporarily."), |
c906108c | 15689 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15690 | |
15691 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15692 | ||
84951ab5 | 15693 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15694 | Enable some breakpoints.\n\ |
c906108c SS |
15695 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15696 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15697 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15698 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15699 | |
1a966eab AC |
15700 | add_cmd ("once", no_class, enable_once_command, _("\ |
15701 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15702 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15703 | &enablebreaklist); |
15704 | ||
1a966eab AC |
15705 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15706 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15707 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15708 | &enablebreaklist); |
15709 | ||
816338b5 SS |
15710 | add_cmd ("count", no_class, enable_count_command, _("\ |
15711 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15712 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15713 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15714 | &enablebreaklist); | |
15715 | ||
1a966eab AC |
15716 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15717 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15718 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15719 | &enablelist); |
15720 | ||
1a966eab AC |
15721 | add_cmd ("once", no_class, enable_once_command, _("\ |
15722 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15723 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15724 | &enablelist); |
15725 | ||
15726 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15727 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15728 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15729 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15730 | &enablelist); |
15731 | ||
1bedd215 AC |
15732 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15733 | Disable some breakpoints.\n\ | |
c906108c SS |
15734 | Arguments are breakpoint numbers with spaces in between.\n\ |
15735 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15736 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15737 | &disablelist, "disable ", 1, &cmdlist); |
15738 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15739 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15740 | |
1a966eab AC |
15741 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15742 | Disable some breakpoints.\n\ | |
c906108c SS |
15743 | Arguments are breakpoint numbers with spaces in between.\n\ |
15744 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15745 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15746 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15747 | &disablelist); |
15748 | ||
1bedd215 AC |
15749 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15750 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15751 | Arguments are breakpoint numbers with spaces in between.\n\ |
15752 | To delete all breakpoints, give no argument.\n\ | |
15753 | \n\ | |
15754 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15755 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15756 | &deletelist, "delete ", 1, &cmdlist); |
15757 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15758 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15759 | |
1a966eab AC |
15760 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15761 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15762 | Arguments are breakpoint numbers with spaces in between.\n\ |
15763 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15764 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15765 | &deletelist); |
15766 | ||
1bedd215 | 15767 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15768 | Clear breakpoint at specified location.\n\ |
15769 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15770 | \n\ |
15771 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15772 | is executing in.\n" |
15773 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15774 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15775 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15776 | |
1bedd215 | 15777 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15778 | Set breakpoint at specified location.\n" |
31e2b00f | 15779 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15780 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15781 | |
c906108c SS |
15782 | add_com_alias ("b", "break", class_run, 1); |
15783 | add_com_alias ("br", "break", class_run, 1); | |
15784 | add_com_alias ("bre", "break", class_run, 1); | |
15785 | add_com_alias ("brea", "break", class_run, 1); | |
15786 | ||
c906108c SS |
15787 | if (dbx_commands) |
15788 | { | |
1bedd215 AC |
15789 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15790 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15791 | &stoplist, "stop ", 1, &cmdlist); |
15792 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15793 | _("Break in function or address."), &stoplist); |
c5aa993b | 15794 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15795 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15796 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15797 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15798 | The \"Type\" column indicates one of:\n\ |
15799 | \tbreakpoint - normal breakpoint\n\ | |
15800 | \twatchpoint - watchpoint\n\ | |
15801 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15802 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15803 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15804 | address and file/line number respectively.\n\ |
15805 | \n\ | |
15806 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15807 | are set to the address of the last breakpoint listed unless the command\n\ |
15808 | is prefixed with \"server \".\n\n\ | |
c906108c | 15809 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15810 | breakpoint set.")); |
c906108c SS |
15811 | } |
15812 | ||
11db9430 | 15813 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15814 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15815 | The \"Type\" column indicates one of:\n\ |
15816 | \tbreakpoint - normal breakpoint\n\ | |
15817 | \twatchpoint - watchpoint\n\ | |
15818 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15819 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15820 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15821 | address and file/line number respectively.\n\ |
15822 | \n\ | |
15823 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15824 | are set to the address of the last breakpoint listed unless the command\n\ |
15825 | is prefixed with \"server \".\n\n\ | |
c906108c | 15826 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15827 | breakpoint set.")); |
c906108c | 15828 | |
6b04bdb7 MS |
15829 | add_info_alias ("b", "breakpoints", 1); |
15830 | ||
1a966eab AC |
15831 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15832 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15833 | The \"Type\" column indicates one of:\n\ |
15834 | \tbreakpoint - normal breakpoint\n\ | |
15835 | \twatchpoint - watchpoint\n\ | |
15836 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15837 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15838 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15839 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15840 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15841 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15842 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15843 | address and file/line number respectively.\n\ |
15844 | \n\ | |
15845 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15846 | are set to the address of the last breakpoint listed unless the command\n\ |
15847 | is prefixed with \"server \".\n\n\ | |
c906108c | 15848 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15849 | breakpoint set."), |
c906108c SS |
15850 | &maintenanceinfolist); |
15851 | ||
44feb3ce TT |
15852 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15853 | Set catchpoints to catch events."), | |
15854 | &catch_cmdlist, "catch ", | |
15855 | 0/*allow-unknown*/, &cmdlist); | |
15856 | ||
15857 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15858 | Set temporary catchpoints to catch events."), | |
15859 | &tcatch_cmdlist, "tcatch ", | |
15860 | 0/*allow-unknown*/, &cmdlist); | |
15861 | ||
44feb3ce TT |
15862 | add_catch_command ("fork", _("Catch calls to fork."), |
15863 | catch_fork_command_1, | |
a96d9b2e | 15864 | NULL, |
44feb3ce TT |
15865 | (void *) (uintptr_t) catch_fork_permanent, |
15866 | (void *) (uintptr_t) catch_fork_temporary); | |
15867 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15868 | catch_fork_command_1, | |
a96d9b2e | 15869 | NULL, |
44feb3ce TT |
15870 | (void *) (uintptr_t) catch_vfork_permanent, |
15871 | (void *) (uintptr_t) catch_vfork_temporary); | |
15872 | add_catch_command ("exec", _("Catch calls to exec."), | |
15873 | catch_exec_command_1, | |
a96d9b2e SDJ |
15874 | NULL, |
15875 | CATCH_PERMANENT, | |
15876 | CATCH_TEMPORARY); | |
edcc5120 TT |
15877 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15878 | Usage: catch load [REGEX]\n\ | |
15879 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15880 | catch_load_command_1, | |
15881 | NULL, | |
15882 | CATCH_PERMANENT, | |
15883 | CATCH_TEMPORARY); | |
15884 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15885 | Usage: catch unload [REGEX]\n\ | |
15886 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15887 | catch_unload_command_1, | |
15888 | NULL, | |
15889 | CATCH_PERMANENT, | |
15890 | CATCH_TEMPORARY); | |
c5aa993b | 15891 | |
1bedd215 AC |
15892 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15893 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15894 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15895 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15896 | an expression changes.\n\ |
15897 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15898 | the memory to which it refers.")); | |
65d12d83 | 15899 | set_cmd_completer (c, expression_completer); |
c906108c | 15900 | |
1bedd215 AC |
15901 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15902 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15903 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15904 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15905 | an expression is read.\n\ |
15906 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15907 | the memory to which it refers.")); | |
65d12d83 | 15908 | set_cmd_completer (c, expression_completer); |
c906108c | 15909 | |
1bedd215 AC |
15910 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15911 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15912 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15913 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15914 | an expression is either read or written.\n\ |
15915 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15916 | the memory to which it refers.")); | |
65d12d83 | 15917 | set_cmd_completer (c, expression_completer); |
c906108c | 15918 | |
11db9430 | 15919 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15920 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15921 | |
920d2a44 AC |
15922 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15923 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15924 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15925 | &can_use_hw_watchpoints, _("\ | |
15926 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15927 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15928 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15929 | such is available. (However, any hardware watchpoints that were\n\ | |
15930 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15931 | hardware.)"), |
15932 | NULL, | |
920d2a44 | 15933 | show_can_use_hw_watchpoints, |
85c07804 | 15934 | &setlist, &showlist); |
c906108c SS |
15935 | |
15936 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15937 | |
1042e4c0 SS |
15938 | /* Tracepoint manipulation commands. */ |
15939 | ||
15940 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15941 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15942 | \n" |
15943 | BREAK_ARGS_HELP ("trace") "\n\ | |
15944 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15945 | set_cmd_completer (c, location_completer); | |
15946 | ||
15947 | add_com_alias ("tp", "trace", class_alias, 0); | |
15948 | add_com_alias ("tr", "trace", class_alias, 1); | |
15949 | add_com_alias ("tra", "trace", class_alias, 1); | |
15950 | add_com_alias ("trac", "trace", class_alias, 1); | |
15951 | ||
7a697b8d | 15952 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15953 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15954 | \n" |
15955 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15956 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15957 | set_cmd_completer (c, location_completer); | |
15958 | ||
0fb4aa4b | 15959 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15960 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15961 | \n\ |
15962 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15963 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15964 | or -m MARKER_ID.\n\n\ | |
15965 | If a marker id is specified, probe the marker with that name. With\n\ | |
15966 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15967 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15968 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15969 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15970 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15971 | \n\ | |
15972 | CONDITION is a boolean expression.\n\ | |
629500fa | 15973 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15974 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15975 | conditions are different.\n\ | |
0fb4aa4b PA |
15976 | \n\ |
15977 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15978 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15979 | set_cmd_completer (c, location_completer); | |
15980 | ||
11db9430 | 15981 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15982 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15983 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15984 | last tracepoint set.")); | |
15985 | ||
15986 | add_info_alias ("tp", "tracepoints", 1); | |
15987 | ||
15988 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15989 | Delete specified tracepoints.\n\ | |
15990 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15991 | No argument means delete all tracepoints."), | |
15992 | &deletelist); | |
7e20dfcd | 15993 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15994 | |
15995 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15996 | Disable specified tracepoints.\n\ | |
15997 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15998 | No argument means disable all tracepoints."), | |
15999 | &disablelist); | |
16000 | deprecate_cmd (c, "disable"); | |
16001 | ||
16002 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16003 | Enable specified tracepoints.\n\ | |
16004 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16005 | No argument means enable all tracepoints."), | |
16006 | &enablelist); | |
16007 | deprecate_cmd (c, "enable"); | |
16008 | ||
16009 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16010 | Set the passcount for a tracepoint.\n\ | |
16011 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16012 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16013 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16014 | ||
6149aea9 PA |
16015 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16016 | _("Save breakpoint definitions as a script."), | |
16017 | &save_cmdlist, "save ", | |
16018 | 0/*allow-unknown*/, &cmdlist); | |
16019 | ||
16020 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16021 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16022 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16023 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16024 | session to restore them."), | |
16025 | &save_cmdlist); | |
16026 | set_cmd_completer (c, filename_completer); | |
16027 | ||
16028 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16029 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16030 | Use the 'source' command in another debug session to restore them."), |
16031 | &save_cmdlist); | |
1042e4c0 SS |
16032 | set_cmd_completer (c, filename_completer); |
16033 | ||
6149aea9 PA |
16034 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16035 | deprecate_cmd (c, "save tracepoints"); | |
16036 | ||
1bedd215 | 16037 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16038 | Breakpoint specific settings\n\ |
16039 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16040 | pending breakpoint behavior"), |
fa8d40ab JJ |
16041 | &breakpoint_set_cmdlist, "set breakpoint ", |
16042 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16043 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16044 | Breakpoint specific settings\n\ |
16045 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16046 | pending breakpoint behavior"), |
fa8d40ab JJ |
16047 | &breakpoint_show_cmdlist, "show breakpoint ", |
16048 | 0/*allow-unknown*/, &showlist); | |
16049 | ||
7915a72c AC |
16050 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16051 | &pending_break_support, _("\ | |
16052 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16053 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16054 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16055 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16056 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16057 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16058 | NULL, |
920d2a44 | 16059 | show_pending_break_support, |
6e1d7d6c AC |
16060 | &breakpoint_set_cmdlist, |
16061 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16062 | |
16063 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16064 | |
16065 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16066 | &automatic_hardware_breakpoints, _("\ | |
16067 | Set automatic usage of hardware breakpoints."), _("\ | |
16068 | Show automatic usage of hardware breakpoints."), _("\ | |
16069 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16070 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16071 | a warning will be emitted for such breakpoints."), | |
16072 | NULL, | |
16073 | show_automatic_hardware_breakpoints, | |
16074 | &breakpoint_set_cmdlist, | |
16075 | &breakpoint_show_cmdlist); | |
74960c60 | 16076 | |
a25a5a45 PA |
16077 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16078 | &always_inserted_mode, _("\ | |
74960c60 VP |
16079 | Set mode for inserting breakpoints."), _("\ |
16080 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16081 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16082 | they're created, kept inserted even when execution stops, and removed\n\ | |
16083 | only when the user deletes them. When this mode is off (the default),\n\ | |
16084 | breakpoints are inserted only when execution continues, and removed\n\ | |
16085 | when execution stops."), | |
72d0e2c5 YQ |
16086 | NULL, |
16087 | &show_always_inserted_mode, | |
16088 | &breakpoint_set_cmdlist, | |
16089 | &breakpoint_show_cmdlist); | |
f1310107 | 16090 | |
b775012e LM |
16091 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16092 | condition_evaluation_enums, | |
16093 | &condition_evaluation_mode_1, _("\ | |
16094 | Set mode of breakpoint condition evaluation."), _("\ | |
16095 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16096 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16097 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16098 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16099 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16100 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16101 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16102 | be set to \"gdb\""), | |
16103 | &set_condition_evaluation_mode, | |
16104 | &show_condition_evaluation_mode, | |
16105 | &breakpoint_set_cmdlist, | |
16106 | &breakpoint_show_cmdlist); | |
16107 | ||
f1310107 TJB |
16108 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16109 | Set a breakpoint for an address range.\n\ | |
16110 | break-range START-LOCATION, END-LOCATION\n\ | |
16111 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16112 | LINENUM, for that line in the current file,\n\ | |
16113 | FILE:LINENUM, for that line in that file,\n\ | |
16114 | +OFFSET, for that number of lines after the current line\n\ | |
16115 | or the start of the range\n\ | |
16116 | FUNCTION, for the first line in that function,\n\ | |
16117 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16118 | *ADDRESS, for the instruction at that address.\n\ | |
16119 | \n\ | |
16120 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16121 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16122 | range (including START-LOCATION and END-LOCATION).")); | |
16123 | ||
e7e0cddf | 16124 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16125 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16126 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16127 | location may be a linespec, explicit, or address location.\n" |
16128 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16129 | set_cmd_completer (c, location_completer); |
16130 | ||
16131 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16132 | dprintf_style_enums, &dprintf_style, _("\ | |
16133 | Set the style of usage for dynamic printf."), _("\ | |
16134 | Show the style of usage for dynamic printf."), _("\ | |
16135 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16136 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16137 | console, as with the \"printf\" command.\n\ | |
16138 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16139 | program; by default printf(), but you can choose a different function or\n\ | |
16140 | output stream by setting dprintf-function and dprintf-channel."), | |
16141 | update_dprintf_commands, NULL, | |
16142 | &setlist, &showlist); | |
16143 | ||
16144 | dprintf_function = xstrdup ("printf"); | |
16145 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16146 | &dprintf_function, _("\ | |
16147 | Set the function to use for dynamic printf"), _("\ | |
16148 | Show the function to use for dynamic printf"), NULL, | |
16149 | update_dprintf_commands, NULL, | |
16150 | &setlist, &showlist); | |
16151 | ||
16152 | dprintf_channel = xstrdup (""); | |
16153 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16154 | &dprintf_channel, _("\ | |
16155 | Set the channel to use for dynamic printf"), _("\ | |
16156 | Show the channel to use for dynamic printf"), NULL, | |
16157 | update_dprintf_commands, NULL, | |
16158 | &setlist, &showlist); | |
16159 | ||
d3ce09f5 SS |
16160 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16161 | &disconnected_dprintf, _("\ | |
16162 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16163 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16164 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16165 | even if GDB disconnects or detaches from the target."), | |
16166 | NULL, | |
16167 | NULL, | |
16168 | &setlist, &showlist); | |
16169 | ||
16170 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16171 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16172 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16173 | ||
765dc015 | 16174 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16175 | |
16176 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16177 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16178 | } |