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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 | |
0b39b52e | 229 | static void trace_pass_command (const char *, int); |
1042e4c0 | 230 | |
558a9d82 YQ |
231 | static void set_tracepoint_count (int num); |
232 | ||
9c06b0b4 TJB |
233 | static int is_masked_watchpoint (const struct breakpoint *b); |
234 | ||
b775012e LM |
235 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
236 | ||
983af33b SDJ |
237 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
238 | otherwise. */ | |
239 | ||
240 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 241 | |
2060206e PA |
242 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
243 | that are implemented on top of software or hardware breakpoints | |
244 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
245 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
246 | ||
247 | /* Internal breakpoints class type. */ | |
06edf0c0 | 248 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
249 | |
250 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
251 | static struct breakpoint_ops momentary_breakpoint_ops; |
252 | ||
2060206e PA |
253 | /* The breakpoint_ops structure to be used in regular user created |
254 | breakpoints. */ | |
255 | struct breakpoint_ops bkpt_breakpoint_ops; | |
256 | ||
55aa24fb SDJ |
257 | /* Breakpoints set on probes. */ |
258 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
259 | ||
e7e0cddf | 260 | /* Dynamic printf class type. */ |
c5867ab6 | 261 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 262 | |
d3ce09f5 SS |
263 | /* The style in which to perform a dynamic printf. This is a user |
264 | option because different output options have different tradeoffs; | |
265 | if GDB does the printing, there is better error handling if there | |
266 | is a problem with any of the arguments, but using an inferior | |
267 | function lets you have special-purpose printers and sending of | |
268 | output to the same place as compiled-in print functions. */ | |
269 | ||
270 | static const char dprintf_style_gdb[] = "gdb"; | |
271 | static const char dprintf_style_call[] = "call"; | |
272 | static const char dprintf_style_agent[] = "agent"; | |
273 | static const char *const dprintf_style_enums[] = { | |
274 | dprintf_style_gdb, | |
275 | dprintf_style_call, | |
276 | dprintf_style_agent, | |
277 | NULL | |
278 | }; | |
279 | static const char *dprintf_style = dprintf_style_gdb; | |
280 | ||
281 | /* The function to use for dynamic printf if the preferred style is to | |
282 | call into the inferior. The value is simply a string that is | |
283 | copied into the command, so it can be anything that GDB can | |
284 | evaluate to a callable address, not necessarily a function name. */ | |
285 | ||
bde6261a | 286 | static char *dprintf_function; |
d3ce09f5 SS |
287 | |
288 | /* The channel to use for dynamic printf if the preferred style is to | |
289 | call into the inferior; if a nonempty string, it will be passed to | |
290 | the call as the first argument, with the format string as the | |
291 | second. As with the dprintf function, this can be anything that | |
292 | GDB knows how to evaluate, so in addition to common choices like | |
293 | "stderr", this could be an app-specific expression like | |
294 | "mystreams[curlogger]". */ | |
295 | ||
bde6261a | 296 | static char *dprintf_channel; |
d3ce09f5 SS |
297 | |
298 | /* True if dprintf commands should continue to operate even if GDB | |
299 | has disconnected. */ | |
300 | static int disconnected_dprintf = 1; | |
301 | ||
5cea2a26 PA |
302 | struct command_line * |
303 | breakpoint_commands (struct breakpoint *b) | |
304 | { | |
d1b0a7bf | 305 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 306 | } |
3daf8fe5 | 307 | |
f3b1572e PA |
308 | /* Flag indicating that a command has proceeded the inferior past the |
309 | current breakpoint. */ | |
310 | ||
311 | static int breakpoint_proceeded; | |
312 | ||
956a9fb9 | 313 | const char * |
2cec12e5 AR |
314 | bpdisp_text (enum bpdisp disp) |
315 | { | |
4a64f543 MS |
316 | /* NOTE: the following values are a part of MI protocol and |
317 | represent values of 'disp' field returned when inferior stops at | |
318 | a breakpoint. */ | |
bc043ef3 | 319 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 320 | |
2cec12e5 AR |
321 | return bpdisps[(int) disp]; |
322 | } | |
c906108c | 323 | |
4a64f543 | 324 | /* Prototypes for exported functions. */ |
c906108c | 325 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 326 | if such is available. */ |
c906108c SS |
327 | static int can_use_hw_watchpoints; |
328 | ||
920d2a44 AC |
329 | static void |
330 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
331 | struct cmd_list_element *c, | |
332 | const char *value) | |
333 | { | |
3e43a32a MS |
334 | fprintf_filtered (file, |
335 | _("Debugger's willingness to use " | |
336 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
337 | value); |
338 | } | |
339 | ||
fa8d40ab JJ |
340 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
341 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 342 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
343 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
344 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
345 | static void |
346 | show_pending_break_support (struct ui_file *file, int from_tty, | |
347 | struct cmd_list_element *c, | |
348 | const char *value) | |
349 | { | |
3e43a32a MS |
350 | fprintf_filtered (file, |
351 | _("Debugger's behavior regarding " | |
352 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
353 | value); |
354 | } | |
fa8d40ab | 355 | |
765dc015 | 356 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 357 | set with "break" but falling in read-only memory. |
765dc015 VP |
358 | If 0, gdb will warn about such breakpoints, but won't automatically |
359 | use hardware breakpoints. */ | |
360 | static int automatic_hardware_breakpoints; | |
361 | static void | |
362 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
363 | struct cmd_list_element *c, | |
364 | const char *value) | |
365 | { | |
3e43a32a MS |
366 | fprintf_filtered (file, |
367 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
368 | value); |
369 | } | |
370 | ||
a25a5a45 PA |
371 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
372 | stopped, and immediately inserts any new breakpoints as soon as | |
373 | they're created. If off (default), GDB keeps breakpoints off of | |
374 | the target as long as possible. That is, it delays inserting | |
375 | breakpoints until the next resume, and removes them again when the | |
376 | target fully stops. This is a bit safer in case GDB crashes while | |
377 | processing user input. */ | |
378 | static int always_inserted_mode = 0; | |
72d0e2c5 | 379 | |
33e5cbd6 | 380 | static void |
74960c60 | 381 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 382 | struct cmd_list_element *c, const char *value) |
74960c60 | 383 | { |
a25a5a45 PA |
384 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
385 | value); | |
74960c60 VP |
386 | } |
387 | ||
b57bacec PA |
388 | /* See breakpoint.h. */ |
389 | ||
33e5cbd6 | 390 | int |
a25a5a45 | 391 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 392 | { |
a25a5a45 PA |
393 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
394 | { | |
395 | /* If breakpoints are global, they should be inserted even if no | |
396 | thread under gdb's control is running, or even if there are | |
397 | no threads under GDB's control yet. */ | |
398 | return 1; | |
399 | } | |
400 | else if (target_has_execution) | |
401 | { | |
372316f1 PA |
402 | struct thread_info *tp; |
403 | ||
a25a5a45 PA |
404 | if (always_inserted_mode) |
405 | { | |
406 | /* The user wants breakpoints inserted even if all threads | |
407 | are stopped. */ | |
408 | return 1; | |
409 | } | |
410 | ||
b57bacec PA |
411 | if (threads_are_executing ()) |
412 | return 1; | |
372316f1 PA |
413 | |
414 | /* Don't remove breakpoints yet if, even though all threads are | |
415 | stopped, we still have events to process. */ | |
416 | ALL_NON_EXITED_THREADS (tp) | |
417 | if (tp->resumed | |
418 | && tp->suspend.waitstatus_pending_p) | |
419 | return 1; | |
a25a5a45 PA |
420 | } |
421 | return 0; | |
33e5cbd6 | 422 | } |
765dc015 | 423 | |
b775012e LM |
424 | static const char condition_evaluation_both[] = "host or target"; |
425 | ||
426 | /* Modes for breakpoint condition evaluation. */ | |
427 | static const char condition_evaluation_auto[] = "auto"; | |
428 | static const char condition_evaluation_host[] = "host"; | |
429 | static const char condition_evaluation_target[] = "target"; | |
430 | static const char *const condition_evaluation_enums[] = { | |
431 | condition_evaluation_auto, | |
432 | condition_evaluation_host, | |
433 | condition_evaluation_target, | |
434 | NULL | |
435 | }; | |
436 | ||
437 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
438 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
439 | ||
440 | /* Global that we use to display information to the user (gets its value from | |
441 | condition_evaluation_mode_1. */ | |
442 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
443 | ||
444 | /* Translate a condition evaluation mode MODE into either "host" | |
445 | or "target". This is used mostly to translate from "auto" to the | |
446 | real setting that is being used. It returns the translated | |
447 | evaluation mode. */ | |
448 | ||
449 | static const char * | |
450 | translate_condition_evaluation_mode (const char *mode) | |
451 | { | |
452 | if (mode == condition_evaluation_auto) | |
453 | { | |
454 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
455 | return condition_evaluation_target; | |
456 | else | |
457 | return condition_evaluation_host; | |
458 | } | |
459 | else | |
460 | return mode; | |
461 | } | |
462 | ||
463 | /* Discovers what condition_evaluation_auto translates to. */ | |
464 | ||
465 | static const char * | |
466 | breakpoint_condition_evaluation_mode (void) | |
467 | { | |
468 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
469 | } | |
470 | ||
471 | /* Return true if GDB should evaluate breakpoint conditions or false | |
472 | otherwise. */ | |
473 | ||
474 | static int | |
475 | gdb_evaluates_breakpoint_condition_p (void) | |
476 | { | |
477 | const char *mode = breakpoint_condition_evaluation_mode (); | |
478 | ||
479 | return (mode == condition_evaluation_host); | |
480 | } | |
481 | ||
c906108c SS |
482 | /* Are we executing breakpoint commands? */ |
483 | static int executing_breakpoint_commands; | |
484 | ||
c02f5703 MS |
485 | /* Are overlay event breakpoints enabled? */ |
486 | static int overlay_events_enabled; | |
487 | ||
e09342b5 TJB |
488 | /* See description in breakpoint.h. */ |
489 | int target_exact_watchpoints = 0; | |
490 | ||
c906108c | 491 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 492 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 493 | current breakpoint. */ |
c906108c | 494 | |
5c44784c | 495 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 496 | |
5c44784c JM |
497 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
498 | for (B = breakpoint_chain; \ | |
499 | B ? (TMP=B->next, 1): 0; \ | |
500 | B = TMP) | |
c906108c | 501 | |
4a64f543 MS |
502 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
503 | not provided so update_global_location_list must not be called | |
504 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 505 | |
876fa593 | 506 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
507 | for (BP_TMP = bp_locations; \ |
508 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 509 | BP_TMP++) |
7cc221ef | 510 | |
b775012e LM |
511 | /* Iterates through locations with address ADDRESS for the currently selected |
512 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
513 | to where the loop should start from. | |
514 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
515 | appropriate location to start with. */ | |
516 | ||
517 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
518 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
519 | BP_LOCP_TMP = BP_LOCP_START; \ | |
520 | BP_LOCP_START \ | |
f5336ca5 | 521 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
522 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
523 | BP_LOCP_TMP++) | |
524 | ||
1042e4c0 SS |
525 | /* Iterator for tracepoints only. */ |
526 | ||
527 | #define ALL_TRACEPOINTS(B) \ | |
528 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 529 | if (is_tracepoint (B)) |
1042e4c0 | 530 | |
7cc221ef | 531 | /* Chains of all breakpoints defined. */ |
c906108c SS |
532 | |
533 | struct breakpoint *breakpoint_chain; | |
534 | ||
f5336ca5 | 535 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 536 | |
f5336ca5 | 537 | static struct bp_location **bp_locations; |
876fa593 | 538 | |
f5336ca5 | 539 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 540 | |
f5336ca5 | 541 | static unsigned bp_locations_count; |
876fa593 | 542 | |
4a64f543 | 543 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 544 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 545 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 546 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 547 | an address you need to read. */ |
876fa593 | 548 | |
f5336ca5 | 549 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 550 | |
4a64f543 MS |
551 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
552 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
553 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
554 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 555 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 556 | |
f5336ca5 | 557 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 558 | |
4a64f543 | 559 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
560 | from the bp_locations array, but for which a hit may still be |
561 | reported by a target. */ | |
20874c92 VP |
562 | VEC(bp_location_p) *moribund_locations = NULL; |
563 | ||
c906108c SS |
564 | /* Number of last breakpoint made. */ |
565 | ||
95a42b64 TT |
566 | static int breakpoint_count; |
567 | ||
86b17b60 PA |
568 | /* The value of `breakpoint_count' before the last command that |
569 | created breakpoints. If the last (break-like) command created more | |
570 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
571 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
572 | static int prev_breakpoint_count; | |
c906108c | 573 | |
1042e4c0 SS |
574 | /* Number of last tracepoint made. */ |
575 | ||
95a42b64 | 576 | static int tracepoint_count; |
1042e4c0 | 577 | |
6149aea9 PA |
578 | static struct cmd_list_element *breakpoint_set_cmdlist; |
579 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 580 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 581 | |
badd37ce SDJ |
582 | /* See declaration at breakpoint.h. */ |
583 | ||
584 | struct breakpoint * | |
585 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
586 | void *user_data) | |
587 | { | |
588 | struct breakpoint *b = NULL; | |
589 | ||
590 | ALL_BREAKPOINTS (b) | |
591 | { | |
592 | if (func (b, user_data) != 0) | |
593 | break; | |
594 | } | |
595 | ||
596 | return b; | |
597 | } | |
598 | ||
468d015d JJ |
599 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
600 | static int | |
601 | breakpoint_enabled (struct breakpoint *b) | |
602 | { | |
0d381245 | 603 | return (b->enable_state == bp_enabled); |
468d015d JJ |
604 | } |
605 | ||
c906108c SS |
606 | /* Set breakpoint count to NUM. */ |
607 | ||
95a42b64 | 608 | static void |
fba45db2 | 609 | set_breakpoint_count (int num) |
c906108c | 610 | { |
86b17b60 | 611 | prev_breakpoint_count = breakpoint_count; |
c906108c | 612 | breakpoint_count = num; |
4fa62494 | 613 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
614 | } |
615 | ||
86b17b60 PA |
616 | /* Used by `start_rbreak_breakpoints' below, to record the current |
617 | breakpoint count before "rbreak" creates any breakpoint. */ | |
618 | static int rbreak_start_breakpoint_count; | |
619 | ||
95a42b64 TT |
620 | /* Called at the start an "rbreak" command to record the first |
621 | breakpoint made. */ | |
86b17b60 | 622 | |
c80049d3 | 623 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 624 | { |
86b17b60 | 625 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
626 | } |
627 | ||
628 | /* Called at the end of an "rbreak" command to record the last | |
629 | breakpoint made. */ | |
86b17b60 | 630 | |
c80049d3 | 631 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 632 | { |
86b17b60 | 633 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
634 | } |
635 | ||
4a64f543 | 636 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
637 | |
638 | void | |
fba45db2 | 639 | clear_breakpoint_hit_counts (void) |
c906108c SS |
640 | { |
641 | struct breakpoint *b; | |
642 | ||
643 | ALL_BREAKPOINTS (b) | |
644 | b->hit_count = 0; | |
645 | } | |
646 | ||
c906108c | 647 | \f |
48cb2d85 VP |
648 | /* Return the breakpoint with the specified number, or NULL |
649 | if the number does not refer to an existing breakpoint. */ | |
650 | ||
651 | struct breakpoint * | |
652 | get_breakpoint (int num) | |
653 | { | |
654 | struct breakpoint *b; | |
655 | ||
656 | ALL_BREAKPOINTS (b) | |
657 | if (b->number == num) | |
658 | return b; | |
659 | ||
660 | return NULL; | |
661 | } | |
5c44784c | 662 | |
c906108c | 663 | \f |
adc36818 | 664 | |
b775012e LM |
665 | /* Mark locations as "conditions have changed" in case the target supports |
666 | evaluating conditions on its side. */ | |
667 | ||
668 | static void | |
669 | mark_breakpoint_modified (struct breakpoint *b) | |
670 | { | |
671 | struct bp_location *loc; | |
672 | ||
673 | /* This is only meaningful if the target is | |
674 | evaluating conditions and if the user has | |
675 | opted for condition evaluation on the target's | |
676 | side. */ | |
677 | if (gdb_evaluates_breakpoint_condition_p () | |
678 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
679 | return; | |
680 | ||
681 | if (!is_breakpoint (b)) | |
682 | return; | |
683 | ||
684 | for (loc = b->loc; loc; loc = loc->next) | |
685 | loc->condition_changed = condition_modified; | |
686 | } | |
687 | ||
688 | /* Mark location as "conditions have changed" in case the target supports | |
689 | evaluating conditions on its side. */ | |
690 | ||
691 | static void | |
692 | mark_breakpoint_location_modified (struct bp_location *loc) | |
693 | { | |
694 | /* This is only meaningful if the target is | |
695 | evaluating conditions and if the user has | |
696 | opted for condition evaluation on the target's | |
697 | side. */ | |
698 | if (gdb_evaluates_breakpoint_condition_p () | |
699 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
700 | ||
701 | return; | |
702 | ||
703 | if (!is_breakpoint (loc->owner)) | |
704 | return; | |
705 | ||
706 | loc->condition_changed = condition_modified; | |
707 | } | |
708 | ||
709 | /* Sets the condition-evaluation mode using the static global | |
710 | condition_evaluation_mode. */ | |
711 | ||
712 | static void | |
eb4c3f4a | 713 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
714 | struct cmd_list_element *c) |
715 | { | |
b775012e LM |
716 | const char *old_mode, *new_mode; |
717 | ||
718 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
719 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
720 | { | |
721 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
722 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
723 | "Using host evaluation mode instead.")); | |
724 | return; | |
725 | } | |
726 | ||
727 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
728 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
729 | ||
abf1152a JK |
730 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
731 | settings was "auto". */ | |
732 | condition_evaluation_mode = condition_evaluation_mode_1; | |
733 | ||
b775012e LM |
734 | /* Only update the mode if the user picked a different one. */ |
735 | if (new_mode != old_mode) | |
736 | { | |
737 | struct bp_location *loc, **loc_tmp; | |
738 | /* If the user switched to a different evaluation mode, we | |
739 | need to synch the changes with the target as follows: | |
740 | ||
741 | "host" -> "target": Send all (valid) conditions to the target. | |
742 | "target" -> "host": Remove all the conditions from the target. | |
743 | */ | |
744 | ||
b775012e LM |
745 | if (new_mode == condition_evaluation_target) |
746 | { | |
747 | /* Mark everything modified and synch conditions with the | |
748 | target. */ | |
749 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
750 | mark_breakpoint_location_modified (loc); | |
751 | } | |
752 | else | |
753 | { | |
754 | /* Manually mark non-duplicate locations to synch conditions | |
755 | with the target. We do this to remove all the conditions the | |
756 | target knows about. */ | |
757 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
758 | if (is_breakpoint (loc->owner) && loc->inserted) | |
759 | loc->needs_update = 1; | |
760 | } | |
761 | ||
762 | /* Do the update. */ | |
44702360 | 763 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
764 | } |
765 | ||
766 | return; | |
767 | } | |
768 | ||
769 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
770 | what "auto" is translating to. */ | |
771 | ||
772 | static void | |
773 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
774 | struct cmd_list_element *c, const char *value) | |
775 | { | |
776 | if (condition_evaluation_mode == condition_evaluation_auto) | |
777 | fprintf_filtered (file, | |
778 | _("Breakpoint condition evaluation " | |
779 | "mode is %s (currently %s).\n"), | |
780 | value, | |
781 | breakpoint_condition_evaluation_mode ()); | |
782 | else | |
783 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
784 | value); | |
785 | } | |
786 | ||
787 | /* A comparison function for bp_location AP and BP that is used by | |
788 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 789 | the more general bp_locations_compare function. */ |
b775012e LM |
790 | |
791 | static int | |
f5336ca5 | 792 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 793 | { |
9a3c8263 SM |
794 | const struct bp_location *a = *(const struct bp_location **) ap; |
795 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
796 | |
797 | if (a->address == b->address) | |
798 | return 0; | |
799 | else | |
800 | return ((a->address > b->address) - (a->address < b->address)); | |
801 | } | |
802 | ||
803 | /* Helper function to skip all bp_locations with addresses | |
804 | less than ADDRESS. It returns the first bp_location that | |
805 | is greater than or equal to ADDRESS. If none is found, just | |
806 | return NULL. */ | |
807 | ||
808 | static struct bp_location ** | |
809 | get_first_locp_gte_addr (CORE_ADDR address) | |
810 | { | |
811 | struct bp_location dummy_loc; | |
812 | struct bp_location *dummy_locp = &dummy_loc; | |
813 | struct bp_location **locp_found = NULL; | |
814 | ||
815 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
816 | dummy_loc.address = address; |
817 | ||
818 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 819 | locp_found = ((struct bp_location **) |
f5336ca5 | 820 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 821 | sizeof (struct bp_location **), |
f5336ca5 | 822 | bp_locations_compare_addrs)); |
b775012e LM |
823 | |
824 | /* Nothing was found, nothing left to do. */ | |
825 | if (locp_found == NULL) | |
826 | return NULL; | |
827 | ||
828 | /* We may have found a location that is at ADDRESS but is not the first in the | |
829 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 830 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
831 | && (*(locp_found - 1))->address == address) |
832 | locp_found--; | |
833 | ||
834 | return locp_found; | |
835 | } | |
836 | ||
adc36818 | 837 | void |
7a26bd4d | 838 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
839 | int from_tty) |
840 | { | |
3a5c3e22 PA |
841 | xfree (b->cond_string); |
842 | b->cond_string = NULL; | |
adc36818 | 843 | |
3a5c3e22 | 844 | if (is_watchpoint (b)) |
adc36818 | 845 | { |
3a5c3e22 PA |
846 | struct watchpoint *w = (struct watchpoint *) b; |
847 | ||
4d01a485 | 848 | w->cond_exp.reset (); |
3a5c3e22 PA |
849 | } |
850 | else | |
851 | { | |
852 | struct bp_location *loc; | |
853 | ||
854 | for (loc = b->loc; loc; loc = loc->next) | |
855 | { | |
4d01a485 | 856 | loc->cond.reset (); |
b775012e LM |
857 | |
858 | /* No need to free the condition agent expression | |
859 | bytecode (if we have one). We will handle this | |
860 | when we go through update_global_location_list. */ | |
3a5c3e22 | 861 | } |
adc36818 | 862 | } |
adc36818 PM |
863 | |
864 | if (*exp == 0) | |
865 | { | |
866 | if (from_tty) | |
867 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
868 | } | |
869 | else | |
870 | { | |
bbc13ae3 | 871 | const char *arg = exp; |
cc59ec59 | 872 | |
adc36818 PM |
873 | /* I don't know if it matters whether this is the string the user |
874 | typed in or the decompiled expression. */ | |
875 | b->cond_string = xstrdup (arg); | |
876 | b->condition_not_parsed = 0; | |
877 | ||
878 | if (is_watchpoint (b)) | |
879 | { | |
3a5c3e22 PA |
880 | struct watchpoint *w = (struct watchpoint *) b; |
881 | ||
adc36818 PM |
882 | innermost_block = NULL; |
883 | arg = exp; | |
1bb9788d | 884 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
885 | if (*arg) |
886 | error (_("Junk at end of expression")); | |
3a5c3e22 | 887 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
888 | } |
889 | else | |
890 | { | |
3a5c3e22 PA |
891 | struct bp_location *loc; |
892 | ||
adc36818 PM |
893 | for (loc = b->loc; loc; loc = loc->next) |
894 | { | |
895 | arg = exp; | |
896 | loc->cond = | |
1bb9788d TT |
897 | parse_exp_1 (&arg, loc->address, |
898 | block_for_pc (loc->address), 0); | |
adc36818 PM |
899 | if (*arg) |
900 | error (_("Junk at end of expression")); | |
901 | } | |
902 | } | |
903 | } | |
b775012e LM |
904 | mark_breakpoint_modified (b); |
905 | ||
8d3788bd | 906 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
907 | } |
908 | ||
d55637df TT |
909 | /* Completion for the "condition" command. */ |
910 | ||
eb3ff9a5 | 911 | static void |
6f937416 | 912 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 913 | completion_tracker &tracker, |
6f937416 | 914 | const char *text, const char *word) |
d55637df | 915 | { |
6f937416 | 916 | const char *space; |
d55637df | 917 | |
f1735a53 TT |
918 | text = skip_spaces (text); |
919 | space = skip_to_space (text); | |
d55637df TT |
920 | if (*space == '\0') |
921 | { | |
922 | int len; | |
923 | struct breakpoint *b; | |
924 | VEC (char_ptr) *result = NULL; | |
925 | ||
926 | if (text[0] == '$') | |
927 | { | |
928 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
929 | if (!isdigit (text[1])) |
930 | complete_internalvar (tracker, &text[1]); | |
931 | return; | |
d55637df TT |
932 | } |
933 | ||
934 | /* We're completing the breakpoint number. */ | |
935 | len = strlen (text); | |
936 | ||
937 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
938 | { |
939 | char number[50]; | |
940 | ||
941 | xsnprintf (number, sizeof (number), "%d", b->number); | |
942 | ||
943 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
944 | { |
945 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
946 | tracker.add_completion (std::move (copy)); | |
947 | } | |
58ce7251 | 948 | } |
d55637df | 949 | |
eb3ff9a5 | 950 | return; |
d55637df TT |
951 | } |
952 | ||
953 | /* We're completing the expression part. */ | |
f1735a53 | 954 | text = skip_spaces (space); |
eb3ff9a5 | 955 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
956 | } |
957 | ||
c906108c SS |
958 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
959 | ||
960 | static void | |
0b39b52e | 961 | condition_command (const char *arg, int from_tty) |
c906108c | 962 | { |
52f0bd74 | 963 | struct breakpoint *b; |
0b39b52e | 964 | const char *p; |
52f0bd74 | 965 | int bnum; |
c906108c SS |
966 | |
967 | if (arg == 0) | |
e2e0b3e5 | 968 | error_no_arg (_("breakpoint number")); |
c906108c SS |
969 | |
970 | p = arg; | |
971 | bnum = get_number (&p); | |
5c44784c | 972 | if (bnum == 0) |
8a3fe4f8 | 973 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
974 | |
975 | ALL_BREAKPOINTS (b) | |
976 | if (b->number == bnum) | |
2f069f6f | 977 | { |
6dddc817 DE |
978 | /* Check if this breakpoint has a "stop" method implemented in an |
979 | extension language. This method and conditions entered into GDB | |
980 | from the CLI are mutually exclusive. */ | |
981 | const struct extension_language_defn *extlang | |
982 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
983 | ||
984 | if (extlang != NULL) | |
985 | { | |
986 | error (_("Only one stop condition allowed. There is currently" | |
987 | " a %s stop condition defined for this breakpoint."), | |
988 | ext_lang_capitalized_name (extlang)); | |
989 | } | |
2566ad2d | 990 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
991 | |
992 | if (is_breakpoint (b)) | |
44702360 | 993 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 994 | |
2f069f6f JB |
995 | return; |
996 | } | |
c906108c | 997 | |
8a3fe4f8 | 998 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
999 | } |
1000 | ||
a7bdde9e VP |
1001 | /* Check that COMMAND do not contain commands that are suitable |
1002 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1003 | Throw if any such commands is found. */ |
1004 | ||
a7bdde9e VP |
1005 | static void |
1006 | check_no_tracepoint_commands (struct command_line *commands) | |
1007 | { | |
1008 | struct command_line *c; | |
cc59ec59 | 1009 | |
a7bdde9e VP |
1010 | for (c = commands; c; c = c->next) |
1011 | { | |
1012 | int i; | |
1013 | ||
1014 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1015 | error (_("The 'while-stepping' command can " |
1016 | "only be used for tracepoints")); | |
a7bdde9e VP |
1017 | |
1018 | for (i = 0; i < c->body_count; ++i) | |
1019 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1020 | ||
1021 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1022 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1023 | command directly. */ |
1024 | if (strstr (c->line, "collect ") == c->line) | |
1025 | error (_("The 'collect' command can only be used for tracepoints")); | |
1026 | ||
51661e93 VP |
1027 | if (strstr (c->line, "teval ") == c->line) |
1028 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1029 | } |
1030 | } | |
1031 | ||
c1fc2657 | 1032 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1033 | { |
c1fc2657 | 1034 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1035 | }; |
1036 | ||
d77f58be SS |
1037 | /* Encapsulate tests for different types of tracepoints. */ |
1038 | ||
3b0871f4 SM |
1039 | static bool |
1040 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1041 | { |
1042 | return (type == bp_tracepoint | |
1043 | || type == bp_fast_tracepoint | |
1044 | || type == bp_static_tracepoint); | |
1045 | } | |
1046 | ||
3b0871f4 SM |
1047 | static bool |
1048 | is_longjmp_type (bptype type) | |
1049 | { | |
1050 | return type == bp_longjmp || type == bp_exception; | |
1051 | } | |
1052 | ||
a7bdde9e | 1053 | int |
d77f58be | 1054 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1055 | { |
d9b3f62e | 1056 | return is_tracepoint_type (b->type); |
a7bdde9e | 1057 | } |
d9b3f62e | 1058 | |
a5e364af SM |
1059 | /* Factory function to create an appropriate instance of breakpoint given |
1060 | TYPE. */ | |
1061 | ||
1062 | static std::unique_ptr<breakpoint> | |
1063 | new_breakpoint_from_type (bptype type) | |
1064 | { | |
1065 | breakpoint *b; | |
1066 | ||
1067 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1068 | b = new tracepoint (); |
3b0871f4 | 1069 | else if (is_longjmp_type (type)) |
c1fc2657 | 1070 | b = new longjmp_breakpoint (); |
a5e364af SM |
1071 | else |
1072 | b = new breakpoint (); | |
1073 | ||
1074 | return std::unique_ptr<breakpoint> (b); | |
1075 | } | |
1076 | ||
e5dd4106 | 1077 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1078 | breakpoint. This function will throw an exception if a problem is |
1079 | found. */ | |
48cb2d85 | 1080 | |
95a42b64 TT |
1081 | static void |
1082 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1083 | struct command_line *commands) | |
48cb2d85 | 1084 | { |
d77f58be | 1085 | if (is_tracepoint (b)) |
a7bdde9e | 1086 | { |
c9a6ce02 | 1087 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1088 | struct command_line *c; |
1089 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1090 | |
1091 | /* Reset the while-stepping step count. The previous commands | |
1092 | might have included a while-stepping action, while the new | |
1093 | ones might not. */ | |
1094 | t->step_count = 0; | |
1095 | ||
1096 | /* We need to verify that each top-level element of commands is | |
1097 | valid for tracepoints, that there's at most one | |
1098 | while-stepping element, and that the while-stepping's body | |
1099 | has valid tracing commands excluding nested while-stepping. | |
1100 | We also need to validate the tracepoint action line in the | |
1101 | context of the tracepoint --- validate_actionline actually | |
1102 | has side effects, like setting the tracepoint's | |
1103 | while-stepping STEP_COUNT, in addition to checking if the | |
1104 | collect/teval actions parse and make sense in the | |
1105 | tracepoint's context. */ | |
a7bdde9e VP |
1106 | for (c = commands; c; c = c->next) |
1107 | { | |
a7bdde9e VP |
1108 | if (c->control_type == while_stepping_control) |
1109 | { | |
1110 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1111 | error (_("The 'while-stepping' command " |
1112 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1113 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1114 | error (_("The 'while-stepping' command " |
1115 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1116 | |
1117 | if (while_stepping) | |
3e43a32a MS |
1118 | error (_("The 'while-stepping' command " |
1119 | "can be used only once")); | |
a7bdde9e VP |
1120 | else |
1121 | while_stepping = c; | |
1122 | } | |
c9a6ce02 PA |
1123 | |
1124 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1125 | } |
1126 | if (while_stepping) | |
1127 | { | |
1128 | struct command_line *c2; | |
1129 | ||
1130 | gdb_assert (while_stepping->body_count == 1); | |
1131 | c2 = while_stepping->body_list[0]; | |
1132 | for (; c2; c2 = c2->next) | |
1133 | { | |
a7bdde9e VP |
1134 | if (c2->control_type == while_stepping_control) |
1135 | error (_("The 'while-stepping' command cannot be nested")); | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | check_no_tracepoint_commands (commands); | |
1142 | } | |
95a42b64 TT |
1143 | } |
1144 | ||
0fb4aa4b PA |
1145 | /* Return a vector of all the static tracepoints set at ADDR. The |
1146 | caller is responsible for releasing the vector. */ | |
1147 | ||
1148 | VEC(breakpoint_p) * | |
1149 | static_tracepoints_here (CORE_ADDR addr) | |
1150 | { | |
1151 | struct breakpoint *b; | |
1152 | VEC(breakpoint_p) *found = 0; | |
1153 | struct bp_location *loc; | |
1154 | ||
1155 | ALL_BREAKPOINTS (b) | |
1156 | if (b->type == bp_static_tracepoint) | |
1157 | { | |
1158 | for (loc = b->loc; loc; loc = loc->next) | |
1159 | if (loc->address == addr) | |
1160 | VEC_safe_push(breakpoint_p, found, b); | |
1161 | } | |
1162 | ||
1163 | return found; | |
1164 | } | |
1165 | ||
95a42b64 | 1166 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1167 | validate that only allowed commands are included. */ |
95a42b64 TT |
1168 | |
1169 | void | |
4a64f543 | 1170 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1171 | command_line_up &&commands) |
95a42b64 | 1172 | { |
93921405 | 1173 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1174 | |
d1b0a7bf | 1175 | b->commands = std::move (commands); |
8d3788bd | 1176 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1177 | } |
1178 | ||
45a43567 TT |
1179 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1180 | is not the same as the "silent" that may appear in the breakpoint's | |
1181 | commands. */ | |
1182 | ||
1183 | void | |
1184 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1185 | { | |
1186 | int old_silent = b->silent; | |
1187 | ||
1188 | b->silent = silent; | |
1189 | if (old_silent != silent) | |
8d3788bd | 1190 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1191 | } |
1192 | ||
1193 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1194 | breakpoint work for any thread. */ | |
1195 | ||
1196 | void | |
1197 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1198 | { | |
1199 | int old_thread = b->thread; | |
1200 | ||
1201 | b->thread = thread; | |
1202 | if (old_thread != thread) | |
8d3788bd | 1203 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1204 | } |
1205 | ||
1206 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1207 | breakpoint work for any task. */ | |
1208 | ||
1209 | void | |
1210 | breakpoint_set_task (struct breakpoint *b, int task) | |
1211 | { | |
1212 | int old_task = b->task; | |
1213 | ||
1214 | b->task = task; | |
1215 | if (old_task != task) | |
8d3788bd | 1216 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1217 | } |
1218 | ||
95a42b64 TT |
1219 | void |
1220 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1221 | { |
9a3c8263 | 1222 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1223 | |
6f937416 | 1224 | validate_actionline (line, b); |
a7bdde9e VP |
1225 | } |
1226 | ||
95a42b64 | 1227 | static void |
896b6bda | 1228 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1229 | struct command_line *control) |
95a42b64 | 1230 | { |
d1b0a7bf | 1231 | counted_command_line cmd; |
95a42b64 | 1232 | |
896b6bda PA |
1233 | std::string new_arg; |
1234 | ||
95a42b64 TT |
1235 | if (arg == NULL || !*arg) |
1236 | { | |
86b17b60 | 1237 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1238 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1239 | breakpoint_count); | |
95a42b64 | 1240 | else if (breakpoint_count > 0) |
896b6bda | 1241 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1242 | arg = new_arg.c_str (); |
1243 | } | |
1244 | ||
1245 | map_breakpoint_numbers | |
1246 | (arg, [&] (breakpoint *b) | |
1247 | { | |
1248 | if (cmd == NULL) | |
1249 | { | |
48649e1b | 1250 | if (control != NULL) |
d1b0a7bf | 1251 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1252 | else |
1253 | { | |
81b1e71c TT |
1254 | std::string str |
1255 | = string_printf (_("Type commands for breakpoint(s) " | |
1256 | "%s, one per line."), | |
1257 | arg); | |
48649e1b | 1258 | |
81b1e71c | 1259 | cmd = read_command_lines (&str[0], |
d1b0a7bf TT |
1260 | from_tty, 1, |
1261 | (is_tracepoint (b) | |
1262 | ? check_tracepoint_command : 0), | |
1263 | b); | |
48649e1b | 1264 | } |
48649e1b TT |
1265 | } |
1266 | ||
1267 | /* If a breakpoint was on the list more than once, we don't need to | |
1268 | do anything. */ | |
1269 | if (b->commands != cmd) | |
1270 | { | |
d1b0a7bf | 1271 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1272 | b->commands = cmd; |
1273 | observer_notify_breakpoint_modified (b); | |
1274 | } | |
1275 | }); | |
95a42b64 | 1276 | |
48649e1b | 1277 | if (cmd == NULL) |
95a42b64 | 1278 | error (_("No breakpoints specified.")); |
95a42b64 TT |
1279 | } |
1280 | ||
1281 | static void | |
0b39b52e | 1282 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1283 | { |
1284 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1285 | } |
40c03ae8 EZ |
1286 | |
1287 | /* Like commands_command, but instead of reading the commands from | |
1288 | input stream, takes them from an already parsed command structure. | |
1289 | ||
1290 | This is used by cli-script.c to DTRT with breakpoint commands | |
1291 | that are part of if and while bodies. */ | |
1292 | enum command_control_type | |
896b6bda | 1293 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1294 | { |
95a42b64 TT |
1295 | commands_command_1 (arg, 0, cmd); |
1296 | return simple_control; | |
40c03ae8 | 1297 | } |
876fa593 JK |
1298 | |
1299 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1300 | ||
1301 | static int | |
1302 | bp_location_has_shadow (struct bp_location *bl) | |
1303 | { | |
1304 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1305 | return 0; | |
1306 | if (!bl->inserted) | |
1307 | return 0; | |
1308 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1309 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1310 | return 0; |
1311 | return 1; | |
1312 | } | |
1313 | ||
9d497a19 PA |
1314 | /* Update BUF, which is LEN bytes read from the target address |
1315 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1316 | contents. | |
1317 | ||
1318 | If READBUF is not NULL, this buffer must not overlap with the of | |
1319 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1320 | failed assertion internal error will be raised. */ | |
1321 | ||
1322 | static void | |
1323 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1324 | const gdb_byte *writebuf_org, | |
1325 | ULONGEST memaddr, LONGEST len, | |
1326 | struct bp_target_info *target_info, | |
1327 | struct gdbarch *gdbarch) | |
1328 | { | |
1329 | /* Now do full processing of the found relevant range of elements. */ | |
1330 | CORE_ADDR bp_addr = 0; | |
1331 | int bp_size = 0; | |
1332 | int bptoffset = 0; | |
1333 | ||
1334 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1335 | current_program_space->aspace, 0)) | |
1336 | { | |
1337 | /* The breakpoint is inserted in a different address space. */ | |
1338 | return; | |
1339 | } | |
1340 | ||
1341 | /* Addresses and length of the part of the breakpoint that | |
1342 | we need to copy. */ | |
1343 | bp_addr = target_info->placed_address; | |
1344 | bp_size = target_info->shadow_len; | |
1345 | ||
1346 | if (bp_addr + bp_size <= memaddr) | |
1347 | { | |
1348 | /* The breakpoint is entirely before the chunk of memory we are | |
1349 | reading. */ | |
1350 | return; | |
1351 | } | |
1352 | ||
1353 | if (bp_addr >= memaddr + len) | |
1354 | { | |
1355 | /* The breakpoint is entirely after the chunk of memory we are | |
1356 | reading. */ | |
1357 | return; | |
1358 | } | |
1359 | ||
1360 | /* Offset within shadow_contents. */ | |
1361 | if (bp_addr < memaddr) | |
1362 | { | |
1363 | /* Only copy the second part of the breakpoint. */ | |
1364 | bp_size -= memaddr - bp_addr; | |
1365 | bptoffset = memaddr - bp_addr; | |
1366 | bp_addr = memaddr; | |
1367 | } | |
1368 | ||
1369 | if (bp_addr + bp_size > memaddr + len) | |
1370 | { | |
1371 | /* Only copy the first part of the breakpoint. */ | |
1372 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1373 | } | |
1374 | ||
1375 | if (readbuf != NULL) | |
1376 | { | |
1377 | /* Verify that the readbuf buffer does not overlap with the | |
1378 | shadow_contents buffer. */ | |
1379 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1380 | || readbuf >= (target_info->shadow_contents | |
1381 | + target_info->shadow_len)); | |
1382 | ||
1383 | /* Update the read buffer with this inserted breakpoint's | |
1384 | shadow. */ | |
1385 | memcpy (readbuf + bp_addr - memaddr, | |
1386 | target_info->shadow_contents + bptoffset, bp_size); | |
1387 | } | |
1388 | else | |
1389 | { | |
1390 | const unsigned char *bp; | |
0d5ed153 MR |
1391 | CORE_ADDR addr = target_info->reqstd_address; |
1392 | int placed_size; | |
9d497a19 PA |
1393 | |
1394 | /* Update the shadow with what we want to write to memory. */ | |
1395 | memcpy (target_info->shadow_contents + bptoffset, | |
1396 | writebuf_org + bp_addr - memaddr, bp_size); | |
1397 | ||
1398 | /* Determine appropriate breakpoint contents and size for this | |
1399 | address. */ | |
0d5ed153 | 1400 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1401 | |
1402 | /* Update the final write buffer with this inserted | |
1403 | breakpoint's INSN. */ | |
1404 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1405 | } | |
1406 | } | |
1407 | ||
8defab1a | 1408 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1409 | by replacing any memory breakpoints with their shadowed contents. |
1410 | ||
35c63cd8 JB |
1411 | If READBUF is not NULL, this buffer must not overlap with any of |
1412 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1413 | a failed assertion internal error will be raised. | |
1414 | ||
876fa593 | 1415 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1416 | bl->address - bp_locations_placed_address_before_address_max |
1417 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1418 | The range we were requested to resolve shadows for is: |
1419 | memaddr ... memaddr + len | |
1420 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1421 | memaddr + len <= (bl->address |
f5336ca5 | 1422 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1423 | and: |
f5336ca5 | 1424 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1425 | |
8defab1a | 1426 | void |
f0ba3972 PA |
1427 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1428 | const gdb_byte *writebuf_org, | |
1429 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1430 | { |
4a64f543 MS |
1431 | /* Left boundary, right boundary and median element of our binary |
1432 | search. */ | |
876fa593 JK |
1433 | unsigned bc_l, bc_r, bc; |
1434 | ||
4a64f543 MS |
1435 | /* Find BC_L which is a leftmost element which may affect BUF |
1436 | content. It is safe to report lower value but a failure to | |
1437 | report higher one. */ | |
876fa593 JK |
1438 | |
1439 | bc_l = 0; | |
f5336ca5 | 1440 | bc_r = bp_locations_count; |
876fa593 JK |
1441 | while (bc_l + 1 < bc_r) |
1442 | { | |
35df4500 | 1443 | struct bp_location *bl; |
876fa593 JK |
1444 | |
1445 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1446 | bl = bp_locations[bc]; |
876fa593 | 1447 | |
4a64f543 MS |
1448 | /* Check first BL->ADDRESS will not overflow due to the added |
1449 | constant. Then advance the left boundary only if we are sure | |
1450 | the BC element can in no way affect the BUF content (MEMADDR | |
1451 | to MEMADDR + LEN range). | |
876fa593 | 1452 | |
f5336ca5 | 1453 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1454 | offset so that we cannot miss a breakpoint with its shadow |
1455 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1456 | |
f5336ca5 | 1457 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1458 | >= bl->address) |
f5336ca5 | 1459 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1460 | <= memaddr)) |
876fa593 JK |
1461 | bc_l = bc; |
1462 | else | |
1463 | bc_r = bc; | |
1464 | } | |
1465 | ||
128070bb PA |
1466 | /* Due to the binary search above, we need to make sure we pick the |
1467 | first location that's at BC_L's address. E.g., if there are | |
1468 | multiple locations at the same address, BC_L may end up pointing | |
1469 | at a duplicate location, and miss the "master"/"inserted" | |
1470 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1471 | B: | |
1472 | ||
1473 | L1@A, L2@A, L3@B, ... | |
1474 | ||
1475 | BC_L could end up pointing at location L2, while the "master" | |
1476 | location could be L1. Since the `loc->inserted' flag is only set | |
1477 | on "master" locations, we'd forget to restore the shadow of L1 | |
1478 | and L2. */ | |
1479 | while (bc_l > 0 | |
f5336ca5 | 1480 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1481 | bc_l--; |
1482 | ||
876fa593 JK |
1483 | /* Now do full processing of the found relevant range of elements. */ |
1484 | ||
f5336ca5 | 1485 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1486 | { |
f5336ca5 | 1487 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1488 | |
35df4500 TJB |
1489 | /* bp_location array has BL->OWNER always non-NULL. */ |
1490 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1491 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1492 | bl->owner->number); |
ffce0d52 | 1493 | |
e5dd4106 | 1494 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1495 | content. */ |
1496 | ||
f5336ca5 PA |
1497 | if (bl->address >= bp_locations_placed_address_before_address_max |
1498 | && memaddr + len <= (bl->address | |
1499 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1500 | break; |
1501 | ||
35df4500 | 1502 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1503 | continue; |
6c95b8df | 1504 | |
9d497a19 PA |
1505 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1506 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1507 | } | |
c906108c | 1508 | } |
9d497a19 | 1509 | |
c906108c | 1510 | \f |
c5aa993b | 1511 | |
b775012e LM |
1512 | /* Return true if BPT is either a software breakpoint or a hardware |
1513 | breakpoint. */ | |
1514 | ||
1515 | int | |
1516 | is_breakpoint (const struct breakpoint *bpt) | |
1517 | { | |
1518 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1519 | || bpt->type == bp_hardware_breakpoint |
1520 | || bpt->type == bp_dprintf); | |
b775012e LM |
1521 | } |
1522 | ||
60e1c644 PA |
1523 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1524 | ||
a5606eee | 1525 | static int |
d77f58be | 1526 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1527 | { |
1528 | return (bpt->type == bp_hardware_watchpoint | |
1529 | || bpt->type == bp_read_watchpoint | |
1530 | || bpt->type == bp_access_watchpoint); | |
1531 | } | |
7270d8f2 | 1532 | |
60e1c644 PA |
1533 | /* Return true if BPT is of any watchpoint kind, hardware or |
1534 | software. */ | |
1535 | ||
3a5c3e22 | 1536 | int |
d77f58be | 1537 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1538 | { |
1539 | return (is_hardware_watchpoint (bpt) | |
1540 | || bpt->type == bp_watchpoint); | |
1541 | } | |
1542 | ||
3a5c3e22 PA |
1543 | /* Returns true if the current thread and its running state are safe |
1544 | to evaluate or update watchpoint B. Watchpoints on local | |
1545 | expressions need to be evaluated in the context of the thread that | |
1546 | was current when the watchpoint was created, and, that thread needs | |
1547 | to be stopped to be able to select the correct frame context. | |
1548 | Watchpoints on global expressions can be evaluated on any thread, | |
1549 | and in any state. It is presently left to the target allowing | |
1550 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1551 | |
1552 | static int | |
3a5c3e22 | 1553 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1554 | { |
c1fc2657 | 1555 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1556 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1557 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1558 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1559 | } |
1560 | ||
d0fb5eae JK |
1561 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1562 | associated bp_watchpoint_scope breakpoint. */ | |
1563 | ||
1564 | static void | |
3a5c3e22 | 1565 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1566 | { |
c1fc2657 | 1567 | if (w->related_breakpoint != w) |
d0fb5eae | 1568 | { |
c1fc2657 SM |
1569 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1570 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1571 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1572 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1573 | w->related_breakpoint = w; | |
d0fb5eae | 1574 | } |
c1fc2657 | 1575 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1576 | } |
1577 | ||
bb9d5f81 PP |
1578 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1579 | watchpoint W. */ | |
1580 | ||
1581 | static struct value * | |
1582 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1583 | { | |
1584 | struct value *bit_val; | |
1585 | ||
1586 | if (val == NULL) | |
1587 | return NULL; | |
1588 | ||
1589 | bit_val = allocate_value (value_type (val)); | |
1590 | ||
1591 | unpack_value_bitfield (bit_val, | |
1592 | w->val_bitpos, | |
1593 | w->val_bitsize, | |
1594 | value_contents_for_printing (val), | |
1595 | value_offset (val), | |
1596 | val); | |
1597 | ||
1598 | return bit_val; | |
1599 | } | |
1600 | ||
c6d81124 PA |
1601 | /* Allocate a dummy location and add it to B, which must be a software |
1602 | watchpoint. This is required because even if a software watchpoint | |
1603 | is not watching any memory, bpstat_stop_status requires a location | |
1604 | to be able to report stops. */ | |
1605 | ||
1606 | static void | |
1607 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1608 | struct program_space *pspace) | |
1609 | { | |
1610 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1611 | ||
1612 | b->loc = allocate_bp_location (b); | |
1613 | b->loc->pspace = pspace; | |
1614 | b->loc->address = -1; | |
1615 | b->loc->length = -1; | |
1616 | } | |
1617 | ||
1618 | /* Returns true if B is a software watchpoint that is not watching any | |
1619 | memory (e.g., "watch $pc"). */ | |
1620 | ||
1621 | static int | |
1622 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1623 | { | |
1624 | return (b->type == bp_watchpoint | |
1625 | && b->loc != NULL | |
1626 | && b->loc->next == NULL | |
1627 | && b->loc->address == -1 | |
1628 | && b->loc->length == -1); | |
1629 | } | |
1630 | ||
567e1b4e JB |
1631 | /* Assuming that B is a watchpoint: |
1632 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1633 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1634 | - Evaluate the condition if there is one, and store the result |
1635 | in b->loc->cond. | |
a5606eee VP |
1636 | - Update the list of values that must be watched in B->loc. |
1637 | ||
4a64f543 MS |
1638 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1639 | nothing. If this is local watchpoint that is out of scope, delete | |
1640 | it. | |
1641 | ||
1642 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1643 | removed + inserted on each stop here. Normal breakpoints must | |
1644 | never be removed because they might be missed by a running thread | |
1645 | when debugging in non-stop mode. On the other hand, hardware | |
1646 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1647 | to each LWP since they are stored in each LWP's hardware debug | |
1648 | registers. Therefore, such LWP must be stopped first in order to | |
1649 | be able to modify its hardware watchpoints. | |
1650 | ||
1651 | Hardware watchpoints must be reset exactly once after being | |
1652 | presented to the user. It cannot be done sooner, because it would | |
1653 | reset the data used to present the watchpoint hit to the user. And | |
1654 | it must not be done later because it could display the same single | |
1655 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1656 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1657 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1658 | not user-visible - its hit is suppressed if the memory content has | |
1659 | not changed. | |
1660 | ||
1661 | The following constraints influence the location where we can reset | |
1662 | hardware watchpoints: | |
1663 | ||
1664 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1665 | called several times when GDB stops. | |
1666 | ||
1667 | [linux] | |
1668 | * Multiple hardware watchpoints can be hit at the same time, | |
1669 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1670 | hit at a time as the reason for stopping, and all the other hits | |
1671 | are presented later, one after the other, each time the user | |
1672 | requests the execution to be resumed. Execution is not resumed | |
1673 | for the threads still having pending hit event stored in | |
1674 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1675 | the inferior on the first stop the thread hit event is kept being | |
1676 | reported from its cached value by linux_nat_stopped_data_address | |
1677 | until the real thread resume happens after the watchpoint gets | |
1678 | presented and thus its LWP_INFO->STATUS gets reset. | |
1679 | ||
1680 | Therefore the hardware watchpoint hit can get safely reset on the | |
1681 | watchpoint removal from inferior. */ | |
a79d3c27 | 1682 | |
b40ce68a | 1683 | static void |
3a5c3e22 | 1684 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1685 | { |
a5606eee | 1686 | int within_current_scope; |
a5606eee | 1687 | struct frame_id saved_frame_id; |
66076460 | 1688 | int frame_saved; |
a5606eee | 1689 | |
f6bc2008 PA |
1690 | /* If this is a local watchpoint, we only want to check if the |
1691 | watchpoint frame is in scope if the current thread is the thread | |
1692 | that was used to create the watchpoint. */ | |
1693 | if (!watchpoint_in_thread_scope (b)) | |
1694 | return; | |
1695 | ||
c1fc2657 | 1696 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1697 | return; |
1698 | ||
66076460 | 1699 | frame_saved = 0; |
a5606eee VP |
1700 | |
1701 | /* Determine if the watchpoint is within scope. */ | |
1702 | if (b->exp_valid_block == NULL) | |
1703 | within_current_scope = 1; | |
1704 | else | |
1705 | { | |
b5db5dfc UW |
1706 | struct frame_info *fi = get_current_frame (); |
1707 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1708 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1709 | ||
c9cf6e20 MG |
1710 | /* If we're at a point where the stack has been destroyed |
1711 | (e.g. in a function epilogue), unwinding may not work | |
1712 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1713 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1714 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1715 | return; |
66076460 DJ |
1716 | |
1717 | /* Save the current frame's ID so we can restore it after | |
1718 | evaluating the watchpoint expression on its own frame. */ | |
1719 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1720 | took a frame parameter, so that we didn't have to change the | |
1721 | selected frame. */ | |
1722 | frame_saved = 1; | |
1723 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1724 | ||
a5606eee VP |
1725 | fi = frame_find_by_id (b->watchpoint_frame); |
1726 | within_current_scope = (fi != NULL); | |
1727 | if (within_current_scope) | |
1728 | select_frame (fi); | |
1729 | } | |
1730 | ||
b5db5dfc UW |
1731 | /* We don't free locations. They are stored in the bp_location array |
1732 | and update_global_location_list will eventually delete them and | |
1733 | remove breakpoints if needed. */ | |
c1fc2657 | 1734 | b->loc = NULL; |
b5db5dfc | 1735 | |
a5606eee VP |
1736 | if (within_current_scope && reparse) |
1737 | { | |
bbc13ae3 | 1738 | const char *s; |
d63d0675 | 1739 | |
4d01a485 | 1740 | b->exp.reset (); |
d63d0675 | 1741 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1742 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1743 | /* If the meaning of expression itself changed, the old value is |
1744 | no longer relevant. We don't want to report a watchpoint hit | |
1745 | to the user when the old value and the new value may actually | |
1746 | be completely different objects. */ | |
1747 | value_free (b->val); | |
fa4727a6 DJ |
1748 | b->val = NULL; |
1749 | b->val_valid = 0; | |
60e1c644 PA |
1750 | |
1751 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1752 | expression is stored in the breakpoint object, not in the | |
1753 | locations (re)created below. */ | |
c1fc2657 | 1754 | if (b->cond_string != NULL) |
60e1c644 | 1755 | { |
4d01a485 | 1756 | b->cond_exp.reset (); |
60e1c644 | 1757 | |
c1fc2657 | 1758 | s = b->cond_string; |
1bb9788d | 1759 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1760 | } |
a5606eee | 1761 | } |
a5606eee VP |
1762 | |
1763 | /* If we failed to parse the expression, for example because | |
1764 | it refers to a global variable in a not-yet-loaded shared library, | |
1765 | don't try to insert watchpoint. We don't automatically delete | |
1766 | such watchpoint, though, since failure to parse expression | |
1767 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1768 | if (!target_has_execution) |
2d134ed3 PA |
1769 | { |
1770 | /* Without execution, memory can't change. No use to try and | |
1771 | set watchpoint locations. The watchpoint will be reset when | |
1772 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1773 | if (!can_use_hw_watchpoints) |
1774 | { | |
c1fc2657 SM |
1775 | if (b->ops->works_in_software_mode (b)) |
1776 | b->type = bp_watchpoint; | |
e8369a73 | 1777 | else |
638aa5a1 AB |
1778 | error (_("Can't set read/access watchpoint when " |
1779 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1780 | } |
2d134ed3 PA |
1781 | } |
1782 | else if (within_current_scope && b->exp) | |
a5606eee | 1783 | { |
0cf6dd15 | 1784 | int pc = 0; |
fa4727a6 | 1785 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1786 | struct program_space *frame_pspace; |
a5606eee | 1787 | |
4d01a485 | 1788 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1789 | |
a5606eee VP |
1790 | /* Avoid setting b->val if it's already set. The meaning of |
1791 | b->val is 'the last value' user saw, and we should update | |
1792 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1793 | happens, the code that reports it updates b->val directly. |
1794 | We don't keep track of the memory value for masked | |
1795 | watchpoints. */ | |
c1fc2657 | 1796 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1797 | { |
bb9d5f81 PP |
1798 | if (b->val_bitsize != 0) |
1799 | { | |
1800 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1801 | if (v != NULL) | |
1802 | release_value (v); | |
1803 | } | |
fa4727a6 DJ |
1804 | b->val = v; |
1805 | b->val_valid = 1; | |
1806 | } | |
a5606eee | 1807 | |
2d134ed3 PA |
1808 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1809 | ||
a5606eee | 1810 | /* Look at each value on the value chain. */ |
9fa40276 | 1811 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1812 | { |
1813 | /* If it's a memory location, and GDB actually needed | |
1814 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1815 | must watch it. If the first value returned is |
1816 | still lazy, that means an error occurred reading it; | |
1817 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1818 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1819 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1820 | { |
1821 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1822 | |
a5606eee VP |
1823 | /* We only watch structs and arrays if user asked |
1824 | for it explicitly, never if they just happen to | |
1825 | appear in the middle of some value chain. */ | |
fa4727a6 | 1826 | if (v == result |
a5606eee VP |
1827 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1828 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1829 | { | |
1830 | CORE_ADDR addr; | |
f486487f | 1831 | enum target_hw_bp_type type; |
a5606eee | 1832 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1833 | int bitpos = 0, bitsize = 0; |
1834 | ||
1835 | if (value_bitsize (v) != 0) | |
1836 | { | |
1837 | /* Extract the bit parameters out from the bitfield | |
1838 | sub-expression. */ | |
1839 | bitpos = value_bitpos (v); | |
1840 | bitsize = value_bitsize (v); | |
1841 | } | |
1842 | else if (v == result && b->val_bitsize != 0) | |
1843 | { | |
1844 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1845 | lvalue whose bit parameters are saved in the fields | |
1846 | VAL_BITPOS and VAL_BITSIZE. */ | |
1847 | bitpos = b->val_bitpos; | |
1848 | bitsize = b->val_bitsize; | |
1849 | } | |
a5606eee | 1850 | |
42ae5230 | 1851 | addr = value_address (v); |
bb9d5f81 PP |
1852 | if (bitsize != 0) |
1853 | { | |
1854 | /* Skip the bytes that don't contain the bitfield. */ | |
1855 | addr += bitpos / 8; | |
1856 | } | |
1857 | ||
a5606eee | 1858 | type = hw_write; |
c1fc2657 | 1859 | if (b->type == bp_read_watchpoint) |
a5606eee | 1860 | type = hw_read; |
c1fc2657 | 1861 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1862 | type = hw_access; |
3a5c3e22 | 1863 | |
c1fc2657 SM |
1864 | loc = allocate_bp_location (b); |
1865 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1866 | ; |
1867 | *tmp = loc; | |
a6d9a66e | 1868 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1869 | |
1870 | loc->pspace = frame_pspace; | |
a5606eee | 1871 | loc->address = addr; |
bb9d5f81 PP |
1872 | |
1873 | if (bitsize != 0) | |
1874 | { | |
1875 | /* Just cover the bytes that make up the bitfield. */ | |
1876 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1877 | } | |
1878 | else | |
1879 | loc->length = TYPE_LENGTH (value_type (v)); | |
1880 | ||
a5606eee VP |
1881 | loc->watchpoint_type = type; |
1882 | } | |
1883 | } | |
9fa40276 TJB |
1884 | } |
1885 | ||
1886 | /* Change the type of breakpoint between hardware assisted or | |
1887 | an ordinary watchpoint depending on the hardware support | |
1888 | and free hardware slots. REPARSE is set when the inferior | |
1889 | is started. */ | |
a9634178 | 1890 | if (reparse) |
9fa40276 | 1891 | { |
e09342b5 | 1892 | int reg_cnt; |
9fa40276 TJB |
1893 | enum bp_loc_type loc_type; |
1894 | struct bp_location *bl; | |
a5606eee | 1895 | |
a9634178 | 1896 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1897 | |
1898 | if (reg_cnt) | |
9fa40276 TJB |
1899 | { |
1900 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1901 | enum bptype type; |
9fa40276 | 1902 | |
a9634178 TJB |
1903 | /* Use an exact watchpoint when there's only one memory region to be |
1904 | watched, and only one debug register is needed to watch it. */ | |
1905 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1906 | ||
9fa40276 | 1907 | /* We need to determine how many resources are already |
e09342b5 TJB |
1908 | used for all other hardware watchpoints plus this one |
1909 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1910 | this watchpoint in as well. */ |
1911 | ||
1912 | /* If this is a software watchpoint, we try to turn it | |
1913 | to a hardware one -- count resources as if B was of | |
1914 | hardware watchpoint type. */ | |
c1fc2657 | 1915 | type = b->type; |
a1398e0c PA |
1916 | if (type == bp_watchpoint) |
1917 | type = bp_hardware_watchpoint; | |
1918 | ||
1919 | /* This watchpoint may or may not have been placed on | |
1920 | the list yet at this point (it won't be in the list | |
1921 | if we're trying to create it for the first time, | |
1922 | through watch_command), so always account for it | |
1923 | manually. */ | |
1924 | ||
1925 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1926 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1927 | |
1928 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1929 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1930 | |
1931 | target_resources_ok | |
1932 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1933 | if (target_resources_ok <= 0) |
a9634178 | 1934 | { |
c1fc2657 | 1935 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1936 | |
1937 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1938 | error (_("Target does not support this type of " |
1939 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1940 | else if (target_resources_ok < 0 && !sw_mode) |
1941 | error (_("There are not enough available hardware " | |
1942 | "resources for this watchpoint.")); | |
a1398e0c PA |
1943 | |
1944 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1945 | b->type = bp_watchpoint; |
a1398e0c PA |
1946 | } |
1947 | else | |
1948 | { | |
1949 | /* If this was a software watchpoint, we've just | |
1950 | found we have enough resources to turn it to a | |
1951 | hardware watchpoint. Otherwise, this is a | |
1952 | nop. */ | |
c1fc2657 | 1953 | b->type = type; |
a9634178 | 1954 | } |
9fa40276 | 1955 | } |
c1fc2657 | 1956 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1957 | { |
1958 | if (!can_use_hw_watchpoints) | |
1959 | error (_("Can't set read/access watchpoint when " | |
1960 | "hardware watchpoints are disabled.")); | |
1961 | else | |
1962 | error (_("Expression cannot be implemented with " | |
1963 | "read/access watchpoint.")); | |
1964 | } | |
9fa40276 | 1965 | else |
c1fc2657 | 1966 | b->type = bp_watchpoint; |
9fa40276 | 1967 | |
c1fc2657 | 1968 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1969 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1970 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1971 | bl->loc_type = loc_type; |
1972 | } | |
1973 | ||
1974 | for (v = val_chain; v; v = next) | |
1975 | { | |
a5606eee VP |
1976 | next = value_next (v); |
1977 | if (v != b->val) | |
1978 | value_free (v); | |
1979 | } | |
1980 | ||
c7437ca6 PA |
1981 | /* If a software watchpoint is not watching any memory, then the |
1982 | above left it without any location set up. But, | |
1983 | bpstat_stop_status requires a location to be able to report | |
1984 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1985 | if (b->type == bp_watchpoint && b->loc == NULL) |
1986 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1987 | } |
1988 | else if (!within_current_scope) | |
7270d8f2 | 1989 | { |
ac74f770 MS |
1990 | printf_filtered (_("\ |
1991 | Watchpoint %d deleted because the program has left the block\n\ | |
1992 | in which its expression is valid.\n"), | |
c1fc2657 | 1993 | b->number); |
d0fb5eae | 1994 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1995 | } |
a5606eee VP |
1996 | |
1997 | /* Restore the selected frame. */ | |
66076460 DJ |
1998 | if (frame_saved) |
1999 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2000 | } |
2001 | ||
a5606eee | 2002 | |
74960c60 | 2003 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2004 | inserted in the inferior. We don't differentiate the type of BL's owner |
2005 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2006 | breakpoint_ops is not defined, because in insert_bp_location, | |
2007 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2008 | static int |
35df4500 | 2009 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2010 | { |
35df4500 | 2011 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2012 | return 0; |
2013 | ||
35df4500 | 2014 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2015 | return 0; |
2016 | ||
35df4500 | 2017 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2018 | return 0; |
2019 | ||
f8eba3c6 TT |
2020 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2021 | return 0; | |
2022 | ||
56710373 PA |
2023 | /* This is set for example, when we're attached to the parent of a |
2024 | vfork, and have detached from the child. The child is running | |
2025 | free, and we expect it to do an exec or exit, at which point the | |
2026 | OS makes the parent schedulable again (and the target reports | |
2027 | that the vfork is done). Until the child is done with the shared | |
2028 | memory region, do not insert breakpoints in the parent, otherwise | |
2029 | the child could still trip on the parent's breakpoints. Since | |
2030 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2031 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2032 | return 0; |
2033 | ||
31e77af2 | 2034 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2035 | location, except if the breakpoint is a single-step breakpoint, |
2036 | and the breakpoint's thread is the thread which is stepping past | |
2037 | a breakpoint. */ | |
31e77af2 PA |
2038 | if ((bl->loc_type == bp_loc_software_breakpoint |
2039 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2040 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2041 | bl->address) |
2042 | /* The single-step breakpoint may be inserted at the location | |
2043 | we're trying to step if the instruction branches to itself. | |
2044 | However, the instruction won't be executed at all and it may | |
2045 | break the semantics of the instruction, for example, the | |
2046 | instruction is a conditional branch or updates some flags. | |
2047 | We can't fix it unless GDB is able to emulate the instruction | |
2048 | or switch to displaced stepping. */ | |
2049 | && !(bl->owner->type == bp_single_step | |
2050 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2051 | { |
2052 | if (debug_infrun) | |
2053 | { | |
2054 | fprintf_unfiltered (gdb_stdlog, | |
2055 | "infrun: skipping breakpoint: " | |
2056 | "stepping past insn at: %s\n", | |
2057 | paddress (bl->gdbarch, bl->address)); | |
2058 | } | |
2059 | return 0; | |
2060 | } | |
31e77af2 | 2061 | |
963f9c80 PA |
2062 | /* Don't insert watchpoints if we're trying to step past the |
2063 | instruction that triggered one. */ | |
2064 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2065 | && stepping_past_nonsteppable_watchpoint ()) | |
2066 | { | |
2067 | if (debug_infrun) | |
2068 | { | |
2069 | fprintf_unfiltered (gdb_stdlog, | |
2070 | "infrun: stepping past non-steppable watchpoint. " | |
2071 | "skipping watchpoint at %s:%d\n", | |
2072 | paddress (bl->gdbarch, bl->address), | |
2073 | bl->length); | |
2074 | } | |
2075 | return 0; | |
2076 | } | |
2077 | ||
74960c60 VP |
2078 | return 1; |
2079 | } | |
2080 | ||
934709f0 PW |
2081 | /* Same as should_be_inserted but does the check assuming |
2082 | that the location is not duplicated. */ | |
2083 | ||
2084 | static int | |
2085 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2086 | { | |
2087 | int result; | |
2088 | const int save_duplicate = bl->duplicate; | |
2089 | ||
2090 | bl->duplicate = 0; | |
2091 | result = should_be_inserted (bl); | |
2092 | bl->duplicate = save_duplicate; | |
2093 | return result; | |
2094 | } | |
2095 | ||
b775012e LM |
2096 | /* Parses a conditional described by an expression COND into an |
2097 | agent expression bytecode suitable for evaluation | |
2098 | by the bytecode interpreter. Return NULL if there was | |
2099 | any error during parsing. */ | |
2100 | ||
833177a4 | 2101 | static agent_expr_up |
b775012e LM |
2102 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2103 | { | |
833177a4 | 2104 | if (cond == NULL) |
b775012e LM |
2105 | return NULL; |
2106 | ||
833177a4 PA |
2107 | agent_expr_up aexpr; |
2108 | ||
b775012e LM |
2109 | /* We don't want to stop processing, so catch any errors |
2110 | that may show up. */ | |
492d29ea | 2111 | TRY |
b775012e | 2112 | { |
036e657b | 2113 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2114 | } |
2115 | ||
492d29ea | 2116 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2117 | { |
2118 | /* If we got here, it means the condition could not be parsed to a valid | |
2119 | bytecode expression and thus can't be evaluated on the target's side. | |
2120 | It's no use iterating through the conditions. */ | |
b775012e | 2121 | } |
492d29ea | 2122 | END_CATCH |
b775012e LM |
2123 | |
2124 | /* We have a valid agent expression. */ | |
2125 | return aexpr; | |
2126 | } | |
2127 | ||
2128 | /* Based on location BL, create a list of breakpoint conditions to be | |
2129 | passed on to the target. If we have duplicated locations with different | |
2130 | conditions, we will add such conditions to the list. The idea is that the | |
2131 | target will evaluate the list of conditions and will only notify GDB when | |
2132 | one of them is true. */ | |
2133 | ||
2134 | static void | |
2135 | build_target_condition_list (struct bp_location *bl) | |
2136 | { | |
2137 | struct bp_location **locp = NULL, **loc2p; | |
2138 | int null_condition_or_parse_error = 0; | |
2139 | int modified = bl->needs_update; | |
2140 | struct bp_location *loc; | |
2141 | ||
8b4f3082 | 2142 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2143 | bl->target_info.conditions.clear (); |
8b4f3082 | 2144 | |
b775012e LM |
2145 | /* This is only meaningful if the target is |
2146 | evaluating conditions and if the user has | |
2147 | opted for condition evaluation on the target's | |
2148 | side. */ | |
2149 | if (gdb_evaluates_breakpoint_condition_p () | |
2150 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2151 | return; | |
2152 | ||
2153 | /* Do a first pass to check for locations with no assigned | |
2154 | conditions or conditions that fail to parse to a valid agent expression | |
2155 | bytecode. If any of these happen, then it's no use to send conditions | |
2156 | to the target since this location will always trigger and generate a | |
2157 | response back to GDB. */ | |
2158 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2159 | { | |
2160 | loc = (*loc2p); | |
2161 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2162 | { | |
2163 | if (modified) | |
2164 | { | |
b775012e LM |
2165 | /* Re-parse the conditions since something changed. In that |
2166 | case we already freed the condition bytecodes (see | |
2167 | force_breakpoint_reinsertion). We just | |
2168 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2169 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2170 | loc->cond.get ()); | |
b775012e LM |
2171 | } |
2172 | ||
2173 | /* If we have a NULL bytecode expression, it means something | |
2174 | went wrong or we have a null condition expression. */ | |
2175 | if (!loc->cond_bytecode) | |
2176 | { | |
2177 | null_condition_or_parse_error = 1; | |
2178 | break; | |
2179 | } | |
2180 | } | |
2181 | } | |
2182 | ||
2183 | /* If any of these happened, it means we will have to evaluate the conditions | |
2184 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2185 | for all the other duplicate locations, thus we free all of them here. | |
2186 | ||
2187 | This is so we have a finer control over which locations' conditions are | |
2188 | being evaluated by GDB or the remote stub. */ | |
2189 | if (null_condition_or_parse_error) | |
2190 | { | |
2191 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2192 | { | |
2193 | loc = (*loc2p); | |
2194 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2195 | { | |
2196 | /* Only go as far as the first NULL bytecode is | |
2197 | located. */ | |
2198 | if (!loc->cond_bytecode) | |
2199 | return; | |
2200 | ||
833177a4 | 2201 | loc->cond_bytecode.reset (); |
b775012e LM |
2202 | } |
2203 | } | |
2204 | } | |
2205 | ||
2206 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2207 | for this location's address. */ | |
2208 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2209 | { | |
2210 | loc = (*loc2p); | |
2211 | if (loc->cond | |
2212 | && is_breakpoint (loc->owner) | |
2213 | && loc->pspace->num == bl->pspace->num | |
2214 | && loc->owner->enable_state == bp_enabled | |
2215 | && loc->enabled) | |
3cde5c42 PA |
2216 | { |
2217 | /* Add the condition to the vector. This will be used later | |
2218 | to send the conditions to the target. */ | |
2219 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2220 | } | |
b775012e LM |
2221 | } |
2222 | ||
2223 | return; | |
2224 | } | |
2225 | ||
d3ce09f5 SS |
2226 | /* Parses a command described by string CMD into an agent expression |
2227 | bytecode suitable for evaluation by the bytecode interpreter. | |
2228 | Return NULL if there was any error during parsing. */ | |
2229 | ||
833177a4 | 2230 | static agent_expr_up |
d3ce09f5 SS |
2231 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2232 | { | |
2233 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2234 | struct expression **argvec; |
bbc13ae3 KS |
2235 | const char *cmdrest; |
2236 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2237 | struct format_piece *fpieces; |
2238 | int nargs; | |
2239 | struct gdbarch *gdbarch = get_current_arch (); | |
2240 | ||
833177a4 | 2241 | if (cmd == NULL) |
d3ce09f5 SS |
2242 | return NULL; |
2243 | ||
2244 | cmdrest = cmd; | |
2245 | ||
2246 | if (*cmdrest == ',') | |
2247 | ++cmdrest; | |
f1735a53 | 2248 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2249 | |
2250 | if (*cmdrest++ != '"') | |
2251 | error (_("No format string following the location")); | |
2252 | ||
2253 | format_start = cmdrest; | |
2254 | ||
2255 | fpieces = parse_format_string (&cmdrest); | |
2256 | ||
2257 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2258 | ||
2259 | format_end = cmdrest; | |
2260 | ||
2261 | if (*cmdrest++ != '"') | |
2262 | error (_("Bad format string, non-terminated '\"'.")); | |
2263 | ||
f1735a53 | 2264 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2265 | |
2266 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2267 | error (_("Invalid argument syntax")); | |
2268 | ||
2269 | if (*cmdrest == ',') | |
2270 | cmdrest++; | |
f1735a53 | 2271 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2272 | |
2273 | /* For each argument, make an expression. */ | |
2274 | ||
2275 | argvec = (struct expression **) alloca (strlen (cmd) | |
2276 | * sizeof (struct expression *)); | |
2277 | ||
2278 | nargs = 0; | |
2279 | while (*cmdrest != '\0') | |
2280 | { | |
bbc13ae3 | 2281 | const char *cmd1; |
d3ce09f5 SS |
2282 | |
2283 | cmd1 = cmdrest; | |
4d01a485 PA |
2284 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2285 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2286 | cmdrest = cmd1; |
2287 | if (*cmdrest == ',') | |
2288 | ++cmdrest; | |
2289 | } | |
2290 | ||
833177a4 PA |
2291 | agent_expr_up aexpr; |
2292 | ||
d3ce09f5 SS |
2293 | /* We don't want to stop processing, so catch any errors |
2294 | that may show up. */ | |
492d29ea | 2295 | TRY |
d3ce09f5 | 2296 | { |
036e657b JB |
2297 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2298 | format_start, format_end - format_start, | |
2299 | fpieces, nargs, argvec); | |
d3ce09f5 | 2300 | } |
492d29ea | 2301 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2302 | { |
2303 | /* If we got here, it means the command could not be parsed to a valid | |
2304 | bytecode expression and thus can't be evaluated on the target's side. | |
2305 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2306 | } |
492d29ea PA |
2307 | END_CATCH |
2308 | ||
2309 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2310 | |
d3ce09f5 SS |
2311 | /* We have a valid agent expression, return it. */ |
2312 | return aexpr; | |
2313 | } | |
2314 | ||
2315 | /* Based on location BL, create a list of breakpoint commands to be | |
2316 | passed on to the target. If we have duplicated locations with | |
2317 | different commands, we will add any such to the list. */ | |
2318 | ||
2319 | static void | |
2320 | build_target_command_list (struct bp_location *bl) | |
2321 | { | |
2322 | struct bp_location **locp = NULL, **loc2p; | |
2323 | int null_command_or_parse_error = 0; | |
2324 | int modified = bl->needs_update; | |
2325 | struct bp_location *loc; | |
2326 | ||
3cde5c42 PA |
2327 | /* Clear commands left over from a previous insert. */ |
2328 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2329 | |
41fac0cf | 2330 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2331 | return; |
2332 | ||
41fac0cf PA |
2333 | /* For now, limit to agent-style dprintf breakpoints. */ |
2334 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2335 | return; |
2336 | ||
41fac0cf PA |
2337 | /* For now, if we have any duplicate location that isn't a dprintf, |
2338 | don't install the target-side commands, as that would make the | |
2339 | breakpoint not be reported to the core, and we'd lose | |
2340 | control. */ | |
2341 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2342 | { | |
2343 | loc = (*loc2p); | |
2344 | if (is_breakpoint (loc->owner) | |
2345 | && loc->pspace->num == bl->pspace->num | |
2346 | && loc->owner->type != bp_dprintf) | |
2347 | return; | |
2348 | } | |
2349 | ||
d3ce09f5 SS |
2350 | /* Do a first pass to check for locations with no assigned |
2351 | conditions or conditions that fail to parse to a valid agent expression | |
2352 | bytecode. If any of these happen, then it's no use to send conditions | |
2353 | to the target since this location will always trigger and generate a | |
2354 | response back to GDB. */ | |
2355 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2356 | { | |
2357 | loc = (*loc2p); | |
2358 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2359 | { | |
2360 | if (modified) | |
2361 | { | |
d3ce09f5 SS |
2362 | /* Re-parse the commands since something changed. In that |
2363 | case we already freed the command bytecodes (see | |
2364 | force_breakpoint_reinsertion). We just | |
2365 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2366 | loc->cmd_bytecode |
2367 | = parse_cmd_to_aexpr (bl->address, | |
2368 | loc->owner->extra_string); | |
d3ce09f5 SS |
2369 | } |
2370 | ||
2371 | /* If we have a NULL bytecode expression, it means something | |
2372 | went wrong or we have a null command expression. */ | |
2373 | if (!loc->cmd_bytecode) | |
2374 | { | |
2375 | null_command_or_parse_error = 1; | |
2376 | break; | |
2377 | } | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | /* If anything failed, then we're not doing target-side commands, | |
2382 | and so clean up. */ | |
2383 | if (null_command_or_parse_error) | |
2384 | { | |
2385 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2386 | { | |
2387 | loc = (*loc2p); | |
2388 | if (is_breakpoint (loc->owner) | |
2389 | && loc->pspace->num == bl->pspace->num) | |
2390 | { | |
2391 | /* Only go as far as the first NULL bytecode is | |
2392 | located. */ | |
40fb6c5e | 2393 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2394 | return; |
2395 | ||
833177a4 | 2396 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2397 | } |
2398 | } | |
2399 | } | |
2400 | ||
2401 | /* No NULL commands or failed bytecode generation. Build a command list | |
2402 | for this location's address. */ | |
2403 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2404 | { | |
2405 | loc = (*loc2p); | |
2406 | if (loc->owner->extra_string | |
2407 | && is_breakpoint (loc->owner) | |
2408 | && loc->pspace->num == bl->pspace->num | |
2409 | && loc->owner->enable_state == bp_enabled | |
2410 | && loc->enabled) | |
3cde5c42 PA |
2411 | { |
2412 | /* Add the command to the vector. This will be used later | |
2413 | to send the commands to the target. */ | |
2414 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2415 | } | |
d3ce09f5 SS |
2416 | } |
2417 | ||
2418 | bl->target_info.persist = 0; | |
2419 | /* Maybe flag this location as persistent. */ | |
2420 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2421 | bl->target_info.persist = 1; | |
2422 | } | |
2423 | ||
833b7ab5 YQ |
2424 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2425 | of breakpoint according to ADDR except single-step breakpoint. | |
2426 | Get the kind of single-step breakpoint according to the current | |
2427 | registers state. */ | |
cd6c3b4f YQ |
2428 | |
2429 | static int | |
2430 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2431 | { | |
833b7ab5 YQ |
2432 | if (bl->owner->type == bp_single_step) |
2433 | { | |
2434 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2435 | struct regcache *regcache; | |
2436 | ||
2437 | regcache = get_thread_regcache (thr->ptid); | |
2438 | ||
2439 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2440 | regcache, addr); | |
2441 | } | |
2442 | else | |
2443 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2444 | } |
2445 | ||
35df4500 TJB |
2446 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2447 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2448 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2449 | Returns 0 for success, 1 if the bp_location type is not supported or |
2450 | -1 for failure. | |
879bfdc2 | 2451 | |
4a64f543 MS |
2452 | NOTE drow/2003-09-09: This routine could be broken down to an |
2453 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2454 | static int |
35df4500 | 2455 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2456 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2457 | int *disabled_breaks, |
dd61ec5c MW |
2458 | int *hw_breakpoint_error, |
2459 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2460 | { |
0000e5cc PA |
2461 | enum errors bp_err = GDB_NO_ERROR; |
2462 | const char *bp_err_message = NULL; | |
879bfdc2 | 2463 | |
b775012e | 2464 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2465 | return 0; |
2466 | ||
35c63cd8 JB |
2467 | /* Note we don't initialize bl->target_info, as that wipes out |
2468 | the breakpoint location's shadow_contents if the breakpoint | |
2469 | is still inserted at that location. This in turn breaks | |
2470 | target_read_memory which depends on these buffers when | |
2471 | a memory read is requested at the breakpoint location: | |
2472 | Once the target_info has been wiped, we fail to see that | |
2473 | we have a breakpoint inserted at that address and thus | |
2474 | read the breakpoint instead of returning the data saved in | |
2475 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2476 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2477 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2478 | bl->target_info.length = bl->length; |
8181d85f | 2479 | |
b775012e LM |
2480 | /* When working with target-side conditions, we must pass all the conditions |
2481 | for the same breakpoint address down to the target since GDB will not | |
2482 | insert those locations. With a list of breakpoint conditions, the target | |
2483 | can decide when to stop and notify GDB. */ | |
2484 | ||
2485 | if (is_breakpoint (bl->owner)) | |
2486 | { | |
2487 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2488 | build_target_command_list (bl); |
2489 | /* Reset the modification marker. */ | |
b775012e LM |
2490 | bl->needs_update = 0; |
2491 | } | |
2492 | ||
35df4500 TJB |
2493 | if (bl->loc_type == bp_loc_software_breakpoint |
2494 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2495 | { |
35df4500 | 2496 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2497 | { |
2498 | /* If the explicitly specified breakpoint type | |
2499 | is not hardware breakpoint, check the memory map to see | |
2500 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2501 | |
765dc015 VP |
2502 | Two important cases are: |
2503 | - location type is not hardware breakpoint, memory | |
2504 | is readonly. We change the type of the location to | |
2505 | hardware breakpoint. | |
4a64f543 MS |
2506 | - location type is hardware breakpoint, memory is |
2507 | read-write. This means we've previously made the | |
2508 | location hardware one, but then the memory map changed, | |
2509 | so we undo. | |
765dc015 | 2510 | |
4a64f543 MS |
2511 | When breakpoints are removed, remove_breakpoints will use |
2512 | location types we've just set here, the only possible | |
2513 | problem is that memory map has changed during running | |
2514 | program, but it's not going to work anyway with current | |
2515 | gdb. */ | |
765dc015 | 2516 | struct mem_region *mr |
0d5ed153 | 2517 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2518 | |
2519 | if (mr) | |
2520 | { | |
2521 | if (automatic_hardware_breakpoints) | |
2522 | { | |
765dc015 VP |
2523 | enum bp_loc_type new_type; |
2524 | ||
2525 | if (mr->attrib.mode != MEM_RW) | |
2526 | new_type = bp_loc_hardware_breakpoint; | |
2527 | else | |
2528 | new_type = bp_loc_software_breakpoint; | |
2529 | ||
35df4500 | 2530 | if (new_type != bl->loc_type) |
765dc015 VP |
2531 | { |
2532 | static int said = 0; | |
cc59ec59 | 2533 | |
35df4500 | 2534 | bl->loc_type = new_type; |
765dc015 VP |
2535 | if (!said) |
2536 | { | |
3e43a32a MS |
2537 | fprintf_filtered (gdb_stdout, |
2538 | _("Note: automatically using " | |
2539 | "hardware breakpoints for " | |
2540 | "read-only addresses.\n")); | |
765dc015 VP |
2541 | said = 1; |
2542 | } | |
2543 | } | |
2544 | } | |
35df4500 | 2545 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2546 | && mr->attrib.mode != MEM_RW) |
2547 | { | |
2548 | fprintf_unfiltered (tmp_error_stream, | |
2549 | _("Cannot insert breakpoint %d.\n" | |
2550 | "Cannot set software breakpoint " | |
2551 | "at read-only address %s\n"), | |
2552 | bl->owner->number, | |
2553 | paddress (bl->gdbarch, bl->address)); | |
2554 | return 1; | |
2555 | } | |
765dc015 VP |
2556 | } |
2557 | } | |
2558 | ||
879bfdc2 DJ |
2559 | /* First check to see if we have to handle an overlay. */ |
2560 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2561 | || bl->section == NULL |
2562 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2563 | { |
2564 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2565 | TRY |
dd61ec5c | 2566 | { |
0000e5cc PA |
2567 | int val; |
2568 | ||
dd61ec5c | 2569 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2570 | if (val) |
2571 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2572 | } |
492d29ea | 2573 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2574 | { |
0000e5cc PA |
2575 | bp_err = e.error; |
2576 | bp_err_message = e.message; | |
dd61ec5c | 2577 | } |
492d29ea | 2578 | END_CATCH |
879bfdc2 DJ |
2579 | } |
2580 | else | |
2581 | { | |
4a64f543 | 2582 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2583 | Shall we set a breakpoint at the LMA? */ |
2584 | if (!overlay_events_enabled) | |
2585 | { | |
2586 | /* Yes -- overlay event support is not active, | |
2587 | so we must try to set a breakpoint at the LMA. | |
2588 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2589 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2590 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2591 | bl->owner->number); |
879bfdc2 DJ |
2592 | else |
2593 | { | |
35df4500 TJB |
2594 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2595 | bl->section); | |
879bfdc2 | 2596 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2597 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2598 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2599 | |
2600 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2601 | TRY |
0000e5cc PA |
2602 | { |
2603 | int val; | |
2604 | ||
579c6ad9 | 2605 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2606 | = breakpoint_kind (bl, &addr); |
2607 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2608 | val = target_insert_breakpoint (bl->gdbarch, |
2609 | &bl->overlay_target_info); | |
2610 | if (val) | |
2611 | bp_err = GENERIC_ERROR; | |
2612 | } | |
492d29ea | 2613 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2614 | { |
2615 | bp_err = e.error; | |
2616 | bp_err_message = e.message; | |
2617 | } | |
492d29ea | 2618 | END_CATCH |
0000e5cc PA |
2619 | |
2620 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2621 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2622 | "Overlay breakpoint %d " |
2623 | "failed: in ROM?\n", | |
35df4500 | 2624 | bl->owner->number); |
879bfdc2 DJ |
2625 | } |
2626 | } | |
2627 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2628 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2629 | { |
2630 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2631 | TRY |
dd61ec5c | 2632 | { |
0000e5cc PA |
2633 | int val; |
2634 | ||
dd61ec5c | 2635 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2636 | if (val) |
2637 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2638 | } |
492d29ea | 2639 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2640 | { |
0000e5cc PA |
2641 | bp_err = e.error; |
2642 | bp_err_message = e.message; | |
dd61ec5c | 2643 | } |
492d29ea | 2644 | END_CATCH |
879bfdc2 DJ |
2645 | } |
2646 | else | |
2647 | { | |
2648 | /* No. This breakpoint will not be inserted. | |
2649 | No error, but do not mark the bp as 'inserted'. */ | |
2650 | return 0; | |
2651 | } | |
2652 | } | |
2653 | ||
0000e5cc | 2654 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2655 | { |
2656 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2657 | |
2658 | /* In some cases, we might not be able to insert a | |
2659 | breakpoint in a shared library that has already been | |
2660 | removed, but we have not yet processed the shlib unload | |
2661 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2662 | breakpoint insertion themselves can't tell why the |
2663 | breakpoint insertion failed (e.g., the remote target | |
2664 | doesn't define error codes), so we must treat generic | |
2665 | errors as memory errors. */ | |
0000e5cc | 2666 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2667 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2668 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2669 | || shared_objfile_contains_address_p (bl->pspace, |
2670 | bl->address))) | |
879bfdc2 | 2671 | { |
4a64f543 | 2672 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2673 | bl->shlib_disabled = 1; |
8d3788bd | 2674 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2675 | if (!*disabled_breaks) |
2676 | { | |
2677 | fprintf_unfiltered (tmp_error_stream, | |
2678 | "Cannot insert breakpoint %d.\n", | |
2679 | bl->owner->number); | |
2680 | fprintf_unfiltered (tmp_error_stream, | |
2681 | "Temporarily disabling shared " | |
2682 | "library breakpoints:\n"); | |
2683 | } | |
2684 | *disabled_breaks = 1; | |
879bfdc2 | 2685 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2686 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2687 | return 0; |
879bfdc2 DJ |
2688 | } |
2689 | else | |
879bfdc2 | 2690 | { |
35df4500 | 2691 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2692 | { |
0000e5cc PA |
2693 | *hw_breakpoint_error = 1; |
2694 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2695 | fprintf_unfiltered (tmp_error_stream, |
2696 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2697 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2698 | if (bp_err_message != NULL) | |
2699 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2700 | } |
2701 | else | |
2702 | { | |
0000e5cc PA |
2703 | if (bp_err_message == NULL) |
2704 | { | |
1ccbe998 | 2705 | std::string message |
0000e5cc PA |
2706 | = memory_error_message (TARGET_XFER_E_IO, |
2707 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2708 | |
2709 | fprintf_unfiltered (tmp_error_stream, | |
2710 | "Cannot insert breakpoint %d.\n" | |
2711 | "%s\n", | |
1ccbe998 | 2712 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2713 | } |
2714 | else | |
2715 | { | |
2716 | fprintf_unfiltered (tmp_error_stream, | |
2717 | "Cannot insert breakpoint %d: %s\n", | |
2718 | bl->owner->number, | |
2719 | bp_err_message); | |
2720 | } | |
879bfdc2 | 2721 | } |
0000e5cc | 2722 | return 1; |
879bfdc2 DJ |
2723 | |
2724 | } | |
2725 | } | |
2726 | else | |
35df4500 | 2727 | bl->inserted = 1; |
879bfdc2 | 2728 | |
0000e5cc | 2729 | return 0; |
879bfdc2 DJ |
2730 | } |
2731 | ||
35df4500 | 2732 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2733 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2734 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2735 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2736 | { |
0000e5cc PA |
2737 | int val; |
2738 | ||
77b06cd7 TJB |
2739 | gdb_assert (bl->owner->ops != NULL |
2740 | && bl->owner->ops->insert_location != NULL); | |
2741 | ||
2742 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2743 | |
2744 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2745 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2746 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2747 | { |
2748 | struct bp_location *loc, **loc_temp; | |
2749 | ||
2750 | /* But don't try to insert it, if there's already another | |
2751 | hw_access location that would be considered a duplicate | |
2752 | of this one. */ | |
2753 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2754 | if (loc != bl |
85d721b8 | 2755 | && loc->watchpoint_type == hw_access |
35df4500 | 2756 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2757 | { |
35df4500 TJB |
2758 | bl->duplicate = 1; |
2759 | bl->inserted = 1; | |
2760 | bl->target_info = loc->target_info; | |
2761 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2762 | val = 0; |
2763 | break; | |
2764 | } | |
2765 | ||
2766 | if (val == 1) | |
2767 | { | |
77b06cd7 TJB |
2768 | bl->watchpoint_type = hw_access; |
2769 | val = bl->owner->ops->insert_location (bl); | |
2770 | ||
2771 | if (val) | |
2772 | /* Back to the original value. */ | |
2773 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2774 | } |
2775 | } | |
2776 | ||
35df4500 | 2777 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2778 | } |
2779 | ||
35df4500 | 2780 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2781 | { |
0000e5cc PA |
2782 | int val; |
2783 | ||
77b06cd7 TJB |
2784 | gdb_assert (bl->owner->ops != NULL |
2785 | && bl->owner->ops->insert_location != NULL); | |
2786 | ||
2787 | val = bl->owner->ops->insert_location (bl); | |
2788 | if (val) | |
2789 | { | |
2790 | bl->owner->enable_state = bp_disabled; | |
2791 | ||
2792 | if (val == 1) | |
2793 | warning (_("\ | |
2794 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2795 | of catchpoint."), bl->owner->number); | |
2796 | else | |
2797 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2798 | } | |
2799 | ||
2800 | bl->inserted = (val == 0); | |
1640b821 DJ |
2801 | |
2802 | /* We've already printed an error message if there was a problem | |
2803 | inserting this catchpoint, and we've disabled the catchpoint, | |
2804 | so just return success. */ | |
2805 | return 0; | |
879bfdc2 DJ |
2806 | } |
2807 | ||
2808 | return 0; | |
2809 | } | |
2810 | ||
6c95b8df PA |
2811 | /* This function is called when program space PSPACE is about to be |
2812 | deleted. It takes care of updating breakpoints to not reference | |
2813 | PSPACE anymore. */ | |
2814 | ||
2815 | void | |
2816 | breakpoint_program_space_exit (struct program_space *pspace) | |
2817 | { | |
2818 | struct breakpoint *b, *b_temp; | |
876fa593 | 2819 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2820 | |
2821 | /* Remove any breakpoint that was set through this program space. */ | |
2822 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2823 | { | |
2824 | if (b->pspace == pspace) | |
2825 | delete_breakpoint (b); | |
2826 | } | |
2827 | ||
2828 | /* Breakpoints set through other program spaces could have locations | |
2829 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2830 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2831 | { |
2832 | struct bp_location *tmp; | |
2833 | ||
2834 | if (loc->pspace == pspace) | |
2835 | { | |
2bdf28a0 | 2836 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2837 | if (loc->owner->loc == loc) |
2838 | loc->owner->loc = loc->next; | |
2839 | else | |
2840 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2841 | if (tmp->next == loc) | |
2842 | { | |
2843 | tmp->next = loc->next; | |
2844 | break; | |
2845 | } | |
2846 | } | |
2847 | } | |
2848 | ||
2849 | /* Now update the global location list to permanently delete the | |
2850 | removed locations above. */ | |
44702360 | 2851 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2852 | } |
2853 | ||
74960c60 VP |
2854 | /* Make sure all breakpoints are inserted in inferior. |
2855 | Throws exception on any error. | |
2856 | A breakpoint that is already inserted won't be inserted | |
2857 | again, so calling this function twice is safe. */ | |
2858 | void | |
2859 | insert_breakpoints (void) | |
2860 | { | |
2861 | struct breakpoint *bpt; | |
2862 | ||
2863 | ALL_BREAKPOINTS (bpt) | |
2864 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2865 | { |
2866 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2867 | ||
2868 | update_watchpoint (w, 0 /* don't reparse. */); | |
2869 | } | |
74960c60 | 2870 | |
04086b45 PA |
2871 | /* Updating watchpoints creates new locations, so update the global |
2872 | location list. Explicitly tell ugll to insert locations and | |
2873 | ignore breakpoints_always_inserted_mode. */ | |
2874 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2875 | } |
2876 | ||
20388dd6 YQ |
2877 | /* Invoke CALLBACK for each of bp_location. */ |
2878 | ||
2879 | void | |
2880 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2881 | { | |
2882 | struct bp_location *loc, **loc_tmp; | |
2883 | ||
2884 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2885 | { | |
2886 | callback (loc, NULL); | |
2887 | } | |
2888 | } | |
2889 | ||
b775012e LM |
2890 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2891 | target. It is the case with deleting and disabling of breakpoints when using | |
2892 | always-inserted mode. */ | |
2893 | ||
2894 | static void | |
2895 | update_inserted_breakpoint_locations (void) | |
2896 | { | |
2897 | struct bp_location *bl, **blp_tmp; | |
2898 | int error_flag = 0; | |
2899 | int val = 0; | |
2900 | int disabled_breaks = 0; | |
2901 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2902 | int hw_bp_details_reported = 0; |
b775012e | 2903 | |
d7e74731 | 2904 | string_file tmp_error_stream; |
b775012e LM |
2905 | |
2906 | /* Explicitly mark the warning -- this will only be printed if | |
2907 | there was an error. */ | |
d7e74731 | 2908 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2909 | |
5ed8105e | 2910 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2911 | |
2912 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2913 | { | |
2914 | /* We only want to update software breakpoints and hardware | |
2915 | breakpoints. */ | |
2916 | if (!is_breakpoint (bl->owner)) | |
2917 | continue; | |
2918 | ||
2919 | /* We only want to update locations that are already inserted | |
2920 | and need updating. This is to avoid unwanted insertion during | |
2921 | deletion of breakpoints. */ | |
2922 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2923 | continue; | |
2924 | ||
2925 | switch_to_program_space_and_thread (bl->pspace); | |
2926 | ||
2927 | /* For targets that support global breakpoints, there's no need | |
2928 | to select an inferior to insert breakpoint to. In fact, even | |
2929 | if we aren't attached to any process yet, we should still | |
2930 | insert breakpoints. */ | |
f5656ead | 2931 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2932 | && ptid_equal (inferior_ptid, null_ptid)) |
2933 | continue; | |
2934 | ||
d7e74731 | 2935 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2936 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2937 | if (val) |
2938 | error_flag = val; | |
2939 | } | |
2940 | ||
2941 | if (error_flag) | |
2942 | { | |
223ffa71 | 2943 | target_terminal::ours_for_output (); |
b775012e LM |
2944 | error_stream (tmp_error_stream); |
2945 | } | |
b775012e LM |
2946 | } |
2947 | ||
c30eee59 | 2948 | /* Used when starting or continuing the program. */ |
c906108c | 2949 | |
74960c60 VP |
2950 | static void |
2951 | insert_breakpoint_locations (void) | |
c906108c | 2952 | { |
a5606eee | 2953 | struct breakpoint *bpt; |
35df4500 | 2954 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2955 | int error_flag = 0; |
c906108c | 2956 | int val = 0; |
3fbb6ffa | 2957 | int disabled_breaks = 0; |
81d0cc19 | 2958 | int hw_breakpoint_error = 0; |
dd61ec5c | 2959 | int hw_bp_error_explained_already = 0; |
c906108c | 2960 | |
d7e74731 PA |
2961 | string_file tmp_error_stream; |
2962 | ||
81d0cc19 GS |
2963 | /* Explicitly mark the warning -- this will only be printed if |
2964 | there was an error. */ | |
d7e74731 | 2965 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2966 | |
5ed8105e | 2967 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2968 | |
35df4500 | 2969 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2970 | { |
b775012e | 2971 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2972 | continue; |
2973 | ||
4a64f543 MS |
2974 | /* There is no point inserting thread-specific breakpoints if |
2975 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2976 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2977 | if (bl->owner->thread != -1 |
5d5658a1 | 2978 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2979 | continue; |
2980 | ||
35df4500 | 2981 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2982 | |
2983 | /* For targets that support global breakpoints, there's no need | |
2984 | to select an inferior to insert breakpoint to. In fact, even | |
2985 | if we aren't attached to any process yet, we should still | |
2986 | insert breakpoints. */ | |
f5656ead | 2987 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2988 | && ptid_equal (inferior_ptid, null_ptid)) |
2989 | continue; | |
2990 | ||
d7e74731 | 2991 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2992 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2993 | if (val) |
eacd795a | 2994 | error_flag = val; |
879bfdc2 | 2995 | } |
c906108c | 2996 | |
4a64f543 MS |
2997 | /* If we failed to insert all locations of a watchpoint, remove |
2998 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2999 | ALL_BREAKPOINTS (bpt) |
3000 | { | |
3001 | int some_failed = 0; | |
3002 | struct bp_location *loc; | |
3003 | ||
3004 | if (!is_hardware_watchpoint (bpt)) | |
3005 | continue; | |
3006 | ||
d6b74ac4 | 3007 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3008 | continue; |
74960c60 VP |
3009 | |
3010 | if (bpt->disposition == disp_del_at_next_stop) | |
3011 | continue; | |
a5606eee VP |
3012 | |
3013 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3014 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3015 | { |
3016 | some_failed = 1; | |
3017 | break; | |
3018 | } | |
3019 | if (some_failed) | |
3020 | { | |
3021 | for (loc = bpt->loc; loc; loc = loc->next) | |
3022 | if (loc->inserted) | |
834c0d03 | 3023 | remove_breakpoint (loc); |
a5606eee VP |
3024 | |
3025 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3026 | tmp_error_stream.printf ("Could not insert " |
3027 | "hardware watchpoint %d.\n", | |
3028 | bpt->number); | |
eacd795a | 3029 | error_flag = -1; |
a5606eee VP |
3030 | } |
3031 | } | |
3032 | ||
eacd795a | 3033 | if (error_flag) |
81d0cc19 GS |
3034 | { |
3035 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3036 | message about possibly exhausted resources. */ | |
dd61ec5c | 3037 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3038 | { |
d7e74731 | 3039 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3040 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3041 | } |
223ffa71 | 3042 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3043 | error_stream (tmp_error_stream); |
3044 | } | |
c906108c SS |
3045 | } |
3046 | ||
c30eee59 TJB |
3047 | /* Used when the program stops. |
3048 | Returns zero if successful, or non-zero if there was a problem | |
3049 | removing a breakpoint location. */ | |
3050 | ||
c906108c | 3051 | int |
fba45db2 | 3052 | remove_breakpoints (void) |
c906108c | 3053 | { |
35df4500 | 3054 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3055 | int val = 0; |
c906108c | 3056 | |
35df4500 | 3057 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3058 | { |
1e4d1764 | 3059 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3060 | val |= remove_breakpoint (bl); |
c5aa993b | 3061 | } |
3a1bae8e | 3062 | return val; |
c906108c SS |
3063 | } |
3064 | ||
49fa26b0 PA |
3065 | /* When a thread exits, remove breakpoints that are related to |
3066 | that thread. */ | |
3067 | ||
3068 | static void | |
3069 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3070 | { | |
3071 | struct breakpoint *b, *b_tmp; | |
3072 | ||
3073 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3074 | { | |
5d5658a1 | 3075 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3076 | { |
3077 | b->disposition = disp_del_at_next_stop; | |
3078 | ||
3079 | printf_filtered (_("\ | |
43792cf0 PA |
3080 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3081 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3082 | |
3083 | /* Hide it from the user. */ | |
3084 | b->number = 0; | |
3085 | } | |
3086 | } | |
3087 | } | |
3088 | ||
6c95b8df PA |
3089 | /* Remove breakpoints of process PID. */ |
3090 | ||
3091 | int | |
3092 | remove_breakpoints_pid (int pid) | |
3093 | { | |
35df4500 | 3094 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3095 | int val; |
3096 | struct inferior *inf = find_inferior_pid (pid); | |
3097 | ||
35df4500 | 3098 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3099 | { |
35df4500 | 3100 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3101 | continue; |
3102 | ||
fc126975 | 3103 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3104 | { |
834c0d03 | 3105 | val = remove_breakpoint (bl); |
6c95b8df PA |
3106 | if (val != 0) |
3107 | return val; | |
3108 | } | |
3109 | } | |
3110 | return 0; | |
3111 | } | |
3112 | ||
e58b0e63 PA |
3113 | static int internal_breakpoint_number = -1; |
3114 | ||
84f4c1fe PM |
3115 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3116 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3117 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3118 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3119 | breakpoint_count and that value incremented. Internal breakpoints |
3120 | do not set the internal var bpnum. */ | |
3121 | static void | |
3122 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3123 | { | |
3124 | if (internal) | |
3125 | b->number = internal_breakpoint_number--; | |
3126 | else | |
3127 | { | |
3128 | set_breakpoint_count (breakpoint_count + 1); | |
3129 | b->number = breakpoint_count; | |
3130 | } | |
3131 | } | |
3132 | ||
e62c965a | 3133 | static struct breakpoint * |
a6d9a66e | 3134 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3135 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3136 | const struct breakpoint_ops *ops) |
e62c965a | 3137 | { |
51abb421 | 3138 | symtab_and_line sal; |
e62c965a PP |
3139 | sal.pc = address; |
3140 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3141 | sal.pspace = current_program_space; |
e62c965a | 3142 | |
51abb421 | 3143 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3144 | b->number = internal_breakpoint_number--; |
3145 | b->disposition = disp_donttouch; | |
3146 | ||
3147 | return b; | |
3148 | } | |
3149 | ||
17450429 PP |
3150 | static const char *const longjmp_names[] = |
3151 | { | |
3152 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3153 | }; | |
3154 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3155 | ||
3156 | /* Per-objfile data private to breakpoint.c. */ | |
3157 | struct breakpoint_objfile_data | |
3158 | { | |
3159 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3160 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3161 | |
3162 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3163 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3164 | |
28106bc2 | 3165 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3166 | int longjmp_searched = 0; |
28106bc2 | 3167 | |
45461e0d SM |
3168 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3169 | references. */ | |
3170 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3171 | |
17450429 | 3172 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3173 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3174 | |
3175 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3176 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3177 | |
3178 | /* True if we have looked for exception probes. */ | |
43dce439 | 3179 | int exception_searched = 0; |
28106bc2 | 3180 | |
45461e0d SM |
3181 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3182 | references. */ | |
3183 | std::vector<probe *> exception_probes; | |
17450429 PP |
3184 | }; |
3185 | ||
3186 | static const struct objfile_data *breakpoint_objfile_key; | |
3187 | ||
3188 | /* Minimal symbol not found sentinel. */ | |
3189 | static struct minimal_symbol msym_not_found; | |
3190 | ||
3191 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3192 | ||
3193 | static int | |
3194 | msym_not_found_p (const struct minimal_symbol *msym) | |
3195 | { | |
3196 | return msym == &msym_not_found; | |
3197 | } | |
3198 | ||
3199 | /* Return per-objfile data needed by breakpoint.c. | |
3200 | Allocate the data if necessary. */ | |
3201 | ||
3202 | static struct breakpoint_objfile_data * | |
3203 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3204 | { | |
3205 | struct breakpoint_objfile_data *bp_objfile_data; | |
3206 | ||
9a3c8263 SM |
3207 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3208 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3209 | if (bp_objfile_data == NULL) |
3210 | { | |
43dce439 | 3211 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3212 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3213 | } | |
3214 | return bp_objfile_data; | |
3215 | } | |
3216 | ||
28106bc2 | 3217 | static void |
43dce439 | 3218 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3219 | { |
9a3c8263 SM |
3220 | struct breakpoint_objfile_data *bp_objfile_data |
3221 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3222 | |
43dce439 | 3223 | delete bp_objfile_data; |
28106bc2 SDJ |
3224 | } |
3225 | ||
e62c965a | 3226 | static void |
af02033e | 3227 | create_overlay_event_breakpoint (void) |
e62c965a | 3228 | { |
69de3c6a | 3229 | struct objfile *objfile; |
af02033e | 3230 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3231 | |
69de3c6a PP |
3232 | ALL_OBJFILES (objfile) |
3233 | { | |
3234 | struct breakpoint *b; | |
17450429 PP |
3235 | struct breakpoint_objfile_data *bp_objfile_data; |
3236 | CORE_ADDR addr; | |
67994074 | 3237 | struct explicit_location explicit_loc; |
69de3c6a | 3238 | |
17450429 PP |
3239 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3240 | ||
3b7344d5 | 3241 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3242 | continue; |
3243 | ||
3b7344d5 | 3244 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3245 | { |
3b7344d5 | 3246 | struct bound_minimal_symbol m; |
17450429 PP |
3247 | |
3248 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3249 | if (m.minsym == NULL) |
17450429 PP |
3250 | { |
3251 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3252 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3253 | continue; |
3254 | } | |
3255 | bp_objfile_data->overlay_msym = m; | |
3256 | } | |
e62c965a | 3257 | |
77e371c0 | 3258 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3259 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3260 | bp_overlay_event, |
3261 | &internal_breakpoint_ops); | |
67994074 KS |
3262 | initialize_explicit_location (&explicit_loc); |
3263 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3264 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3265 | |
69de3c6a PP |
3266 | if (overlay_debugging == ovly_auto) |
3267 | { | |
3268 | b->enable_state = bp_enabled; | |
3269 | overlay_events_enabled = 1; | |
3270 | } | |
3271 | else | |
3272 | { | |
3273 | b->enable_state = bp_disabled; | |
3274 | overlay_events_enabled = 0; | |
3275 | } | |
e62c965a | 3276 | } |
e62c965a PP |
3277 | } |
3278 | ||
0fd8e87f | 3279 | static void |
af02033e | 3280 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3281 | { |
6c95b8df | 3282 | struct program_space *pspace; |
6c95b8df | 3283 | |
5ed8105e | 3284 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3285 | |
6c95b8df | 3286 | ALL_PSPACES (pspace) |
af02033e PP |
3287 | { |
3288 | struct objfile *objfile; | |
3289 | ||
3290 | set_current_program_space (pspace); | |
3291 | ||
3292 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3293 | { |
af02033e PP |
3294 | int i; |
3295 | struct gdbarch *gdbarch; | |
17450429 | 3296 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3297 | |
af02033e | 3298 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3299 | |
17450429 PP |
3300 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3301 | ||
28106bc2 SDJ |
3302 | if (!bp_objfile_data->longjmp_searched) |
3303 | { | |
45461e0d SM |
3304 | std::vector<probe *> ret |
3305 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3306 | |
45461e0d | 3307 | if (!ret.empty ()) |
25f9533e SDJ |
3308 | { |
3309 | /* We are only interested in checking one element. */ | |
45461e0d | 3310 | probe *p = ret[0]; |
25f9533e SDJ |
3311 | |
3312 | if (!can_evaluate_probe_arguments (p)) | |
3313 | { | |
3314 | /* We cannot use the probe interface here, because it does | |
3315 | not know how to evaluate arguments. */ | |
45461e0d | 3316 | ret.clear (); |
25f9533e SDJ |
3317 | } |
3318 | } | |
3319 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3320 | bp_objfile_data->longjmp_searched = 1; |
3321 | } | |
3322 | ||
45461e0d | 3323 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3324 | { |
28106bc2 SDJ |
3325 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
3326 | ||
45461e0d | 3327 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3328 | { |
3329 | struct breakpoint *b; | |
3330 | ||
729662a5 | 3331 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3332 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3333 | bp_longjmp_master, |
3334 | &internal_breakpoint_ops); | |
d28cd78a | 3335 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3336 | b->enable_state = bp_disabled; |
3337 | } | |
3338 | ||
3339 | continue; | |
3340 | } | |
3341 | ||
0569175e TSD |
3342 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3343 | continue; | |
3344 | ||
17450429 | 3345 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3346 | { |
3347 | struct breakpoint *b; | |
af02033e | 3348 | const char *func_name; |
17450429 | 3349 | CORE_ADDR addr; |
67994074 | 3350 | struct explicit_location explicit_loc; |
6c95b8df | 3351 | |
3b7344d5 | 3352 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3353 | continue; |
0fd8e87f | 3354 | |
17450429 | 3355 | func_name = longjmp_names[i]; |
3b7344d5 | 3356 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3357 | { |
3b7344d5 | 3358 | struct bound_minimal_symbol m; |
17450429 PP |
3359 | |
3360 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3361 | if (m.minsym == NULL) |
17450429 PP |
3362 | { |
3363 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3364 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3365 | continue; |
3366 | } | |
3367 | bp_objfile_data->longjmp_msym[i] = m; | |
3368 | } | |
3369 | ||
77e371c0 | 3370 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3371 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3372 | &internal_breakpoint_ops); | |
67994074 KS |
3373 | initialize_explicit_location (&explicit_loc); |
3374 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3375 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3376 | b->enable_state = bp_disabled; |
3377 | } | |
0fd8e87f | 3378 | } |
af02033e | 3379 | } |
0fd8e87f UW |
3380 | } |
3381 | ||
af02033e | 3382 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3383 | static void |
af02033e | 3384 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3385 | { |
3386 | struct program_space *pspace; | |
af02033e | 3387 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3388 | |
5ed8105e | 3389 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3390 | |
3391 | ALL_PSPACES (pspace) | |
17450429 PP |
3392 | { |
3393 | struct objfile *objfile; | |
3394 | CORE_ADDR addr; | |
3395 | ||
3396 | set_current_program_space (pspace); | |
3397 | ||
aa7d318d TT |
3398 | ALL_OBJFILES (objfile) |
3399 | { | |
3400 | struct breakpoint *b; | |
17450429 | 3401 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3402 | struct explicit_location explicit_loc; |
aa7d318d | 3403 | |
17450429 | 3404 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3405 | |
3b7344d5 | 3406 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3407 | continue; |
3408 | ||
3b7344d5 | 3409 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3410 | { |
3b7344d5 | 3411 | struct bound_minimal_symbol m; |
17450429 PP |
3412 | |
3413 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3414 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3415 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3416 | { |
3417 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3418 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3419 | continue; |
3420 | } | |
3421 | bp_objfile_data->terminate_msym = m; | |
3422 | } | |
aa7d318d | 3423 | |
77e371c0 | 3424 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3425 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3426 | bp_std_terminate_master, |
3427 | &internal_breakpoint_ops); | |
67994074 KS |
3428 | initialize_explicit_location (&explicit_loc); |
3429 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3430 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3431 | b->enable_state = bp_disabled; |
3432 | } | |
17450429 | 3433 | } |
aa7d318d TT |
3434 | } |
3435 | ||
186c406b TT |
3436 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3437 | ||
70221824 | 3438 | static void |
186c406b TT |
3439 | create_exception_master_breakpoint (void) |
3440 | { | |
3441 | struct objfile *objfile; | |
17450429 | 3442 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3443 | |
3444 | ALL_OBJFILES (objfile) | |
3445 | { | |
17450429 PP |
3446 | struct breakpoint *b; |
3447 | struct gdbarch *gdbarch; | |
3448 | struct breakpoint_objfile_data *bp_objfile_data; | |
3449 | CORE_ADDR addr; | |
67994074 | 3450 | struct explicit_location explicit_loc; |
17450429 PP |
3451 | |
3452 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3453 | ||
28106bc2 SDJ |
3454 | /* We prefer the SystemTap probe point if it exists. */ |
3455 | if (!bp_objfile_data->exception_searched) | |
3456 | { | |
45461e0d SM |
3457 | std::vector<probe *> ret |
3458 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3459 | |
45461e0d | 3460 | if (!ret.empty ()) |
25f9533e SDJ |
3461 | { |
3462 | /* We are only interested in checking one element. */ | |
45461e0d | 3463 | probe *p = ret[0]; |
25f9533e SDJ |
3464 | |
3465 | if (!can_evaluate_probe_arguments (p)) | |
3466 | { | |
3467 | /* We cannot use the probe interface here, because it does | |
3468 | not know how to evaluate arguments. */ | |
45461e0d | 3469 | ret.clear (); |
25f9533e SDJ |
3470 | } |
3471 | } | |
3472 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3473 | bp_objfile_data->exception_searched = 1; |
3474 | } | |
3475 | ||
45461e0d | 3476 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 SDJ |
3477 | { |
3478 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3479 | |
3480 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3481 | { |
3482 | struct breakpoint *b; | |
3483 | ||
729662a5 | 3484 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3485 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3486 | bp_exception_master, |
3487 | &internal_breakpoint_ops); | |
d28cd78a | 3488 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3489 | b->enable_state = bp_disabled; |
3490 | } | |
3491 | ||
3492 | continue; | |
3493 | } | |
3494 | ||
3495 | /* Otherwise, try the hook function. */ | |
3496 | ||
3b7344d5 | 3497 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3498 | continue; |
3499 | ||
3500 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3501 | |
3b7344d5 | 3502 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3503 | { |
3b7344d5 | 3504 | struct bound_minimal_symbol debug_hook; |
186c406b | 3505 | |
17450429 | 3506 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3507 | if (debug_hook.minsym == NULL) |
17450429 | 3508 | { |
3b7344d5 | 3509 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3510 | continue; |
3511 | } | |
3512 | ||
3513 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3514 | } |
17450429 | 3515 | |
77e371c0 | 3516 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3517 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3518 | ¤t_target); | |
06edf0c0 PA |
3519 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3520 | &internal_breakpoint_ops); | |
67994074 KS |
3521 | initialize_explicit_location (&explicit_loc); |
3522 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3523 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3524 | b->enable_state = bp_disabled; |
186c406b | 3525 | } |
186c406b TT |
3526 | } |
3527 | ||
9ef9e6a6 KS |
3528 | /* Does B have a location spec? */ |
3529 | ||
3530 | static int | |
3531 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3532 | { | |
d28cd78a | 3533 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3534 | } |
3535 | ||
c906108c | 3536 | void |
fba45db2 | 3537 | update_breakpoints_after_exec (void) |
c906108c | 3538 | { |
35df4500 | 3539 | struct breakpoint *b, *b_tmp; |
876fa593 | 3540 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3541 | |
25b22b0a PA |
3542 | /* We're about to delete breakpoints from GDB's lists. If the |
3543 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3544 | writing the breakpoints' "shadow contents" back into memory. The | |
3545 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3546 | do that. Instead, the target is responsible from marking | |
3547 | breakpoints out as soon as it detects an exec. We don't do that | |
3548 | here instead, because there may be other attempts to delete | |
3549 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3550 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3551 | if (bploc->pspace == current_program_space) |
3552 | gdb_assert (!bploc->inserted); | |
c906108c | 3553 | |
35df4500 | 3554 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3555 | { |
6c95b8df PA |
3556 | if (b->pspace != current_program_space) |
3557 | continue; | |
3558 | ||
4a64f543 | 3559 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3560 | if (b->type == bp_shlib_event) |
3561 | { | |
3562 | delete_breakpoint (b); | |
3563 | continue; | |
3564 | } | |
c906108c | 3565 | |
4a64f543 | 3566 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3567 | if (b->type == bp_jit_event) |
3568 | { | |
3569 | delete_breakpoint (b); | |
3570 | continue; | |
3571 | } | |
3572 | ||
1900040c | 3573 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3574 | as must overlay event and longjmp master breakpoints. */ |
3575 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3576 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3577 | || b->type == bp_exception_master) | |
c4093a6a JM |
3578 | { |
3579 | delete_breakpoint (b); | |
3580 | continue; | |
3581 | } | |
3582 | ||
4a64f543 | 3583 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3584 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3585 | { |
3586 | delete_breakpoint (b); | |
3587 | continue; | |
3588 | } | |
3589 | ||
7c16b83e PA |
3590 | /* Just like single-step breakpoints. */ |
3591 | if (b->type == bp_single_step) | |
3592 | { | |
3593 | delete_breakpoint (b); | |
3594 | continue; | |
3595 | } | |
3596 | ||
611c83ae PA |
3597 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3598 | after an exec. */ | |
186c406b | 3599 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3600 | || b->type == bp_longjmp_call_dummy |
186c406b | 3601 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3602 | { |
3603 | delete_breakpoint (b); | |
3604 | continue; | |
3605 | } | |
3606 | ||
ce78b96d JB |
3607 | if (b->type == bp_catchpoint) |
3608 | { | |
3609 | /* For now, none of the bp_catchpoint breakpoints need to | |
3610 | do anything at this point. In the future, if some of | |
3611 | the catchpoints need to something, we will need to add | |
3612 | a new method, and call this method from here. */ | |
3613 | continue; | |
3614 | } | |
3615 | ||
c5aa993b JM |
3616 | /* bp_finish is a special case. The only way we ought to be able |
3617 | to see one of these when an exec() has happened, is if the user | |
3618 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3619 | carries them to the call-site of the current callee, by setting | |
3620 | a temporary bp there and resuming. But in this case, the finish | |
3621 | will carry them entirely through the vfork & exec. | |
3622 | ||
3623 | We don't want to allow a bp_finish to remain inserted now. But | |
3624 | we can't safely delete it, 'cause finish_command has a handle to | |
3625 | the bp on a bpstat, and will later want to delete it. There's a | |
3626 | chance (and I've seen it happen) that if we delete the bp_finish | |
3627 | here, that its storage will get reused by the time finish_command | |
3628 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3629 | We really must allow finish_command to delete a bp_finish. | |
3630 | ||
e5dd4106 | 3631 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3632 | it's safe to delete something others may have handles to?" |
3633 | problem, what we'll do here is just uninsert the bp_finish, and | |
3634 | let finish_command delete it. | |
3635 | ||
3636 | (We know the bp_finish is "doomed" in the sense that it's | |
3637 | momentary, and will be deleted as soon as finish_command sees | |
3638 | the inferior stopped. So it doesn't matter that the bp's | |
3639 | address is probably bogus in the new a.out, unlike e.g., the | |
3640 | solib breakpoints.) */ | |
c5aa993b | 3641 | |
c5aa993b JM |
3642 | if (b->type == bp_finish) |
3643 | { | |
3644 | continue; | |
3645 | } | |
3646 | ||
3647 | /* Without a symbolic address, we have little hope of the | |
3648 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3649 | a.out. */ |
9ef9e6a6 | 3650 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3651 | { |
3652 | delete_breakpoint (b); | |
3653 | continue; | |
3654 | } | |
c5aa993b | 3655 | } |
c906108c SS |
3656 | } |
3657 | ||
3658 | int | |
d80ee84f | 3659 | detach_breakpoints (ptid_t ptid) |
c906108c | 3660 | { |
35df4500 | 3661 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3662 | int val = 0; |
2989a365 | 3663 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3664 | struct inferior *inf = current_inferior (); |
c5aa993b | 3665 | |
dfd4cc63 | 3666 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3667 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3668 | |
6c95b8df | 3669 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3670 | inferior_ptid = ptid; |
35df4500 | 3671 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3672 | { |
35df4500 | 3673 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3674 | continue; |
3675 | ||
bd9673a4 PW |
3676 | /* This function must physically remove breakpoints locations |
3677 | from the specified ptid, without modifying the breakpoint | |
3678 | package's state. Locations of type bp_loc_other are only | |
3679 | maintained at GDB side. So, there is no need to remove | |
3680 | these bp_loc_other locations. Moreover, removing these | |
3681 | would modify the breakpoint package's state. */ | |
3682 | if (bl->loc_type == bp_loc_other) | |
3683 | continue; | |
3684 | ||
35df4500 | 3685 | if (bl->inserted) |
b2b6a7da | 3686 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3687 | } |
d03285ec | 3688 | |
3a1bae8e | 3689 | return val; |
c906108c SS |
3690 | } |
3691 | ||
35df4500 | 3692 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3693 | Note that this is used to detach breakpoints from a child fork. |
3694 | When we get here, the child isn't in the inferior list, and neither | |
3695 | do we have objects to represent its address space --- we should | |
35df4500 | 3696 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3697 | |
c906108c | 3698 | static int |
b2b6a7da | 3699 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3700 | { |
3701 | int val; | |
c5aa993b | 3702 | |
35df4500 TJB |
3703 | /* BL is never in moribund_locations by our callers. */ |
3704 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3705 | |
74960c60 VP |
3706 | /* The type of none suggests that owner is actually deleted. |
3707 | This should not ever happen. */ | |
35df4500 | 3708 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3709 | |
35df4500 TJB |
3710 | if (bl->loc_type == bp_loc_software_breakpoint |
3711 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3712 | { |
c02f5703 MS |
3713 | /* "Normal" instruction breakpoint: either the standard |
3714 | trap-instruction bp (bp_breakpoint), or a | |
3715 | bp_hardware_breakpoint. */ | |
3716 | ||
3717 | /* First check to see if we have to handle an overlay. */ | |
3718 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3719 | || bl->section == NULL |
3720 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3721 | { |
3722 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3723 | |
3724 | /* If we're trying to uninsert a memory breakpoint that we | |
3725 | know is set in a dynamic object that is marked | |
3726 | shlib_disabled, then either the dynamic object was | |
3727 | removed with "remove-symbol-file" or with | |
3728 | "nosharedlibrary". In the former case, we don't know | |
3729 | whether another dynamic object might have loaded over the | |
3730 | breakpoint's address -- the user might well let us know | |
3731 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3732 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3733 | list of dynamically loaded objects). If we have the |
3734 | breakpoint's shadow memory, that is, this is a software | |
3735 | breakpoint managed by GDB, check whether the breakpoint | |
3736 | is still inserted in memory, to avoid overwriting wrong | |
3737 | code with stale saved shadow contents. Note that HW | |
3738 | breakpoints don't have shadow memory, as they're | |
3739 | implemented using a mechanism that is not dependent on | |
3740 | being able to modify the target's memory, and as such | |
3741 | they should always be removed. */ | |
3742 | if (bl->shlib_disabled | |
3743 | && bl->target_info.shadow_len != 0 | |
3744 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3745 | val = 0; | |
3746 | else | |
73971819 | 3747 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3748 | } |
c906108c SS |
3749 | else |
3750 | { | |
4a64f543 | 3751 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3752 | Did we set a breakpoint at the LMA? */ |
3753 | if (!overlay_events_enabled) | |
3754 | { | |
3755 | /* Yes -- overlay event support is not active, so we | |
3756 | should have set a breakpoint at the LMA. Remove it. | |
3757 | */ | |
c02f5703 MS |
3758 | /* Ignore any failures: if the LMA is in ROM, we will |
3759 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3760 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3761 | target_remove_hw_breakpoint (bl->gdbarch, | |
3762 | &bl->overlay_target_info); | |
c02f5703 | 3763 | else |
35df4500 | 3764 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3765 | &bl->overlay_target_info, |
3766 | reason); | |
c02f5703 MS |
3767 | } |
3768 | /* Did we set a breakpoint at the VMA? | |
3769 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3770 | if (bl->inserted) |
c906108c | 3771 | { |
c02f5703 MS |
3772 | /* Yes -- remove it. Previously we did not bother to |
3773 | remove the breakpoint if the section had been | |
3774 | unmapped, but let's not rely on that being safe. We | |
3775 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3776 | |
3777 | /* However, we should remove *software* breakpoints only | |
3778 | if the section is still mapped, or else we overwrite | |
3779 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3780 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3781 | || section_is_mapped (bl->section)) | |
73971819 | 3782 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3783 | else |
3784 | val = 0; | |
c906108c | 3785 | } |
c02f5703 MS |
3786 | else |
3787 | { | |
3788 | /* No -- not inserted, so no need to remove. No error. */ | |
3789 | val = 0; | |
3790 | } | |
c906108c | 3791 | } |
879d1e6b | 3792 | |
08351840 PA |
3793 | /* In some cases, we might not be able to remove a breakpoint in |
3794 | a shared library that has already been removed, but we have | |
3795 | not yet processed the shlib unload event. Similarly for an | |
3796 | unloaded add-symbol-file object - the user might not yet have | |
3797 | had the chance to remove-symbol-file it. shlib_disabled will | |
3798 | be set if the library/object has already been removed, but | |
3799 | the breakpoint hasn't been uninserted yet, e.g., after | |
3800 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3801 | always-inserted mode. */ | |
076855f9 | 3802 | if (val |
08351840 PA |
3803 | && (bl->loc_type == bp_loc_software_breakpoint |
3804 | && (bl->shlib_disabled | |
3805 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3806 | || shared_objfile_contains_address_p (bl->pspace, |
3807 | bl->address)))) | |
879d1e6b UW |
3808 | val = 0; |
3809 | ||
c906108c SS |
3810 | if (val) |
3811 | return val; | |
b2b6a7da | 3812 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3813 | } |
35df4500 | 3814 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3815 | { |
77b06cd7 TJB |
3816 | gdb_assert (bl->owner->ops != NULL |
3817 | && bl->owner->ops->remove_location != NULL); | |
3818 | ||
b2b6a7da | 3819 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3820 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3821 | |
c906108c | 3822 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3823 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3824 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3825 | bl->owner->number); |
c906108c | 3826 | } |
35df4500 TJB |
3827 | else if (bl->owner->type == bp_catchpoint |
3828 | && breakpoint_enabled (bl->owner) | |
3829 | && !bl->duplicate) | |
ce78b96d | 3830 | { |
77b06cd7 TJB |
3831 | gdb_assert (bl->owner->ops != NULL |
3832 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3833 | |
73971819 | 3834 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3835 | if (val) |
3836 | return val; | |
77b06cd7 | 3837 | |
b2b6a7da | 3838 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3839 | } |
c906108c SS |
3840 | |
3841 | return 0; | |
3842 | } | |
3843 | ||
6c95b8df | 3844 | static int |
834c0d03 | 3845 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3846 | { |
35df4500 TJB |
3847 | /* BL is never in moribund_locations by our callers. */ |
3848 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3849 | |
6c95b8df PA |
3850 | /* The type of none suggests that owner is actually deleted. |
3851 | This should not ever happen. */ | |
35df4500 | 3852 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3853 | |
5ed8105e | 3854 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3855 | |
35df4500 | 3856 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3857 | |
5ed8105e | 3858 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3859 | } |
3860 | ||
c906108c SS |
3861 | /* Clear the "inserted" flag in all breakpoints. */ |
3862 | ||
25b22b0a | 3863 | void |
fba45db2 | 3864 | mark_breakpoints_out (void) |
c906108c | 3865 | { |
35df4500 | 3866 | struct bp_location *bl, **blp_tmp; |
c906108c | 3867 | |
35df4500 | 3868 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3869 | if (bl->pspace == current_program_space) |
35df4500 | 3870 | bl->inserted = 0; |
c906108c SS |
3871 | } |
3872 | ||
53a5351d JM |
3873 | /* Clear the "inserted" flag in all breakpoints and delete any |
3874 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3875 | |
3876 | Plus other such housekeeping that has to be done for breakpoints | |
3877 | between runs. | |
3878 | ||
53a5351d JM |
3879 | Note: this function gets called at the end of a run (by |
3880 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3881 | init_wait_for_inferior). */ |
c906108c SS |
3882 | |
3883 | ||
3884 | ||
3885 | void | |
fba45db2 | 3886 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3887 | { |
35df4500 | 3888 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3889 | struct bp_location *bl; |
1c5cfe86 | 3890 | int ix; |
6c95b8df | 3891 | struct program_space *pspace = current_program_space; |
c906108c | 3892 | |
50c71eaf PA |
3893 | /* If breakpoint locations are shared across processes, then there's |
3894 | nothing to do. */ | |
f5656ead | 3895 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3896 | return; |
3897 | ||
1a853c52 | 3898 | mark_breakpoints_out (); |
075f6582 | 3899 | |
35df4500 | 3900 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3901 | { |
6c95b8df PA |
3902 | if (b->loc && b->loc->pspace != pspace) |
3903 | continue; | |
3904 | ||
c5aa993b JM |
3905 | switch (b->type) |
3906 | { | |
3907 | case bp_call_dummy: | |
e2e4d78b | 3908 | case bp_longjmp_call_dummy: |
c906108c | 3909 | |
c5aa993b | 3910 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3911 | cause problems when the inferior is rerun, so we better get |
3912 | rid of it. */ | |
3913 | ||
3914 | case bp_watchpoint_scope: | |
3915 | ||
3916 | /* Also get rid of scope breakpoints. */ | |
3917 | ||
3918 | case bp_shlib_event: | |
3919 | ||
3920 | /* Also remove solib event breakpoints. Their addresses may | |
3921 | have changed since the last time we ran the program. | |
3922 | Actually we may now be debugging against different target; | |
3923 | and so the solib backend that installed this breakpoint may | |
3924 | not be used in by the target. E.g., | |
3925 | ||
3926 | (gdb) file prog-linux | |
3927 | (gdb) run # native linux target | |
3928 | ... | |
3929 | (gdb) kill | |
3930 | (gdb) file prog-win.exe | |
3931 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3932 | */ | |
c906108c | 3933 | |
f59f708a PA |
3934 | case bp_step_resume: |
3935 | ||
3936 | /* Also remove step-resume breakpoints. */ | |
3937 | ||
7c16b83e PA |
3938 | case bp_single_step: |
3939 | ||
3940 | /* Also remove single-step breakpoints. */ | |
3941 | ||
c5aa993b JM |
3942 | delete_breakpoint (b); |
3943 | break; | |
c906108c | 3944 | |
c5aa993b JM |
3945 | case bp_watchpoint: |
3946 | case bp_hardware_watchpoint: | |
3947 | case bp_read_watchpoint: | |
3948 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3949 | { |
3950 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3951 | |
3a5c3e22 PA |
3952 | /* Likewise for watchpoints on local expressions. */ |
3953 | if (w->exp_valid_block != NULL) | |
3954 | delete_breakpoint (b); | |
63000888 | 3955 | else |
3a5c3e22 | 3956 | { |
63000888 PA |
3957 | /* Get rid of existing locations, which are no longer |
3958 | valid. New ones will be created in | |
3959 | update_watchpoint, when the inferior is restarted. | |
3960 | The next update_global_location_list call will | |
3961 | garbage collect them. */ | |
3962 | b->loc = NULL; | |
3963 | ||
3964 | if (context == inf_starting) | |
3965 | { | |
3966 | /* Reset val field to force reread of starting value in | |
3967 | insert_breakpoints. */ | |
3968 | if (w->val) | |
3969 | value_free (w->val); | |
3970 | w->val = NULL; | |
3971 | w->val_valid = 0; | |
3972 | } | |
3973 | } | |
3a5c3e22 | 3974 | } |
c5aa993b JM |
3975 | break; |
3976 | default: | |
c5aa993b JM |
3977 | break; |
3978 | } | |
3979 | } | |
1c5cfe86 PA |
3980 | |
3981 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3982 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3983 | decref_bp_location (&bl); | |
1c5cfe86 | 3984 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3985 | } |
3986 | ||
6c95b8df PA |
3987 | /* These functions concern about actual breakpoints inserted in the |
3988 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3989 | we need to hop over the bkpt --- so we check for address space | |
3990 | match, not program space. */ | |
3991 | ||
c2c6d25f JM |
3992 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3993 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3994 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3995 | permanent breakpoint. | |
3996 | - When continuing from a location with an ordinary breakpoint, we | |
3997 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3998 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3999 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4000 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4001 | |
c2c6d25f | 4002 | enum breakpoint_here |
accd0bcd | 4003 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4004 | { |
35df4500 | 4005 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4006 | int any_breakpoint_here = 0; |
c906108c | 4007 | |
35df4500 | 4008 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4009 | { |
35df4500 TJB |
4010 | if (bl->loc_type != bp_loc_software_breakpoint |
4011 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4012 | continue; |
4013 | ||
f1310107 | 4014 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4015 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4016 | || bl->permanent) |
f1310107 | 4017 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4018 | { |
4019 | if (overlay_debugging | |
35df4500 TJB |
4020 | && section_is_overlay (bl->section) |
4021 | && !section_is_mapped (bl->section)) | |
075f6582 | 4022 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4023 | else if (bl->permanent) |
075f6582 DJ |
4024 | return permanent_breakpoint_here; |
4025 | else | |
4026 | any_breakpoint_here = 1; | |
4027 | } | |
4028 | } | |
c906108c | 4029 | |
f486487f | 4030 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4031 | } |
4032 | ||
d35ae833 PA |
4033 | /* See breakpoint.h. */ |
4034 | ||
4035 | int | |
accd0bcd | 4036 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4037 | CORE_ADDR addr, ULONGEST len) |
4038 | { | |
4039 | struct bp_location *bl, **blp_tmp; | |
4040 | ||
4041 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4042 | { | |
4043 | if (bl->loc_type != bp_loc_software_breakpoint | |
4044 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4045 | continue; | |
4046 | ||
4047 | if ((breakpoint_enabled (bl->owner) | |
4048 | || bl->permanent) | |
4049 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4050 | addr, len)) | |
4051 | { | |
4052 | if (overlay_debugging | |
4053 | && section_is_overlay (bl->section) | |
4054 | && !section_is_mapped (bl->section)) | |
4055 | { | |
4056 | /* Unmapped overlay -- can't be a match. */ | |
4057 | continue; | |
4058 | } | |
4059 | ||
4060 | return 1; | |
4061 | } | |
4062 | } | |
4063 | ||
4064 | return 0; | |
4065 | } | |
4066 | ||
1c5cfe86 PA |
4067 | /* Return true if there's a moribund breakpoint at PC. */ |
4068 | ||
4069 | int | |
accd0bcd | 4070 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4071 | { |
4072 | struct bp_location *loc; | |
4073 | int ix; | |
4074 | ||
4075 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4076 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4077 | return 1; |
4078 | ||
4079 | return 0; | |
4080 | } | |
c2c6d25f | 4081 | |
f7ce857f PA |
4082 | /* Returns non-zero iff BL is inserted at PC, in address space |
4083 | ASPACE. */ | |
4084 | ||
4085 | static int | |
4086 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4087 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4088 | { |
4089 | if (bl->inserted | |
4090 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4091 | aspace, pc)) | |
4092 | { | |
4093 | if (overlay_debugging | |
4094 | && section_is_overlay (bl->section) | |
4095 | && !section_is_mapped (bl->section)) | |
4096 | return 0; /* unmapped overlay -- can't be a match */ | |
4097 | else | |
4098 | return 1; | |
4099 | } | |
4100 | return 0; | |
4101 | } | |
4102 | ||
a1fd2fa5 | 4103 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4104 | |
4105 | int | |
accd0bcd | 4106 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4107 | { |
f7ce857f | 4108 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4109 | |
f7ce857f | 4110 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4111 | { |
f7ce857f PA |
4112 | struct bp_location *bl = *blp; |
4113 | ||
35df4500 TJB |
4114 | if (bl->loc_type != bp_loc_software_breakpoint |
4115 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4116 | continue; |
4117 | ||
f7ce857f PA |
4118 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4119 | return 1; | |
c5aa993b | 4120 | } |
c36b740a VP |
4121 | return 0; |
4122 | } | |
4123 | ||
a1fd2fa5 PA |
4124 | /* This function returns non-zero iff there is a software breakpoint |
4125 | inserted at PC. */ | |
c36b740a VP |
4126 | |
4127 | int | |
accd0bcd | 4128 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4129 | CORE_ADDR pc) |
4fa8626c | 4130 | { |
f7ce857f | 4131 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4132 | |
f7ce857f | 4133 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4134 | { |
f7ce857f PA |
4135 | struct bp_location *bl = *blp; |
4136 | ||
35df4500 | 4137 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4138 | continue; |
4139 | ||
f7ce857f PA |
4140 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4141 | return 1; | |
4fa8626c DJ |
4142 | } |
4143 | ||
4144 | return 0; | |
9c02b525 PA |
4145 | } |
4146 | ||
4147 | /* See breakpoint.h. */ | |
4148 | ||
4149 | int | |
accd0bcd | 4150 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4151 | CORE_ADDR pc) |
4152 | { | |
4153 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4154 | |
4155 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4156 | { | |
4157 | struct bp_location *bl = *blp; | |
4158 | ||
4159 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4160 | continue; | |
4161 | ||
4162 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4163 | return 1; | |
4164 | } | |
4165 | ||
4166 | return 0; | |
4fa8626c DJ |
4167 | } |
4168 | ||
9093389c | 4169 | int |
accd0bcd | 4170 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4171 | CORE_ADDR addr, ULONGEST len) |
4172 | { | |
4173 | struct breakpoint *bpt; | |
4174 | ||
4175 | ALL_BREAKPOINTS (bpt) | |
4176 | { | |
4177 | struct bp_location *loc; | |
4178 | ||
4179 | if (bpt->type != bp_hardware_watchpoint | |
4180 | && bpt->type != bp_access_watchpoint) | |
4181 | continue; | |
4182 | ||
4183 | if (!breakpoint_enabled (bpt)) | |
4184 | continue; | |
4185 | ||
4186 | for (loc = bpt->loc; loc; loc = loc->next) | |
4187 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4188 | { | |
4189 | CORE_ADDR l, h; | |
4190 | ||
4191 | /* Check for intersection. */ | |
768adc05 PA |
4192 | l = std::max<CORE_ADDR> (loc->address, addr); |
4193 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4194 | if (l < h) |
4195 | return 1; | |
4196 | } | |
4197 | } | |
4198 | return 0; | |
4199 | } | |
c906108c | 4200 | \f |
c5aa993b | 4201 | |
c906108c SS |
4202 | /* bpstat stuff. External routines' interfaces are documented |
4203 | in breakpoint.h. */ | |
4204 | ||
4205 | int | |
c326b90e | 4206 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4207 | { |
533be4dd | 4208 | return (ep->type == bp_catchpoint); |
c906108c SS |
4209 | } |
4210 | ||
f431efe5 PA |
4211 | /* Frees any storage that is part of a bpstat. Does not walk the |
4212 | 'next' chain. */ | |
4213 | ||
04afa70c | 4214 | bpstats::~bpstats () |
198757a8 | 4215 | { |
04afa70c TT |
4216 | if (old_val != NULL) |
4217 | value_free (old_val); | |
04afa70c TT |
4218 | if (bp_location_at != NULL) |
4219 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4220 | } |
4221 | ||
c906108c SS |
4222 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4223 | Also free any storage that is part of a bpstat. */ | |
4224 | ||
4225 | void | |
fba45db2 | 4226 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4227 | { |
4228 | bpstat p; | |
4229 | bpstat q; | |
4230 | ||
4231 | if (bsp == 0) | |
4232 | return; | |
4233 | p = *bsp; | |
4234 | while (p != NULL) | |
4235 | { | |
4236 | q = p->next; | |
04afa70c | 4237 | delete p; |
c906108c SS |
4238 | p = q; |
4239 | } | |
4240 | *bsp = NULL; | |
4241 | } | |
4242 | ||
04afa70c TT |
4243 | bpstats::bpstats (const bpstats &other) |
4244 | : next (NULL), | |
4245 | bp_location_at (other.bp_location_at), | |
4246 | breakpoint_at (other.breakpoint_at), | |
4247 | commands (other.commands), | |
4248 | old_val (other.old_val), | |
4249 | print (other.print), | |
4250 | stop (other.stop), | |
4251 | print_it (other.print_it) | |
4252 | { | |
4253 | if (old_val != NULL) | |
4254 | { | |
4255 | old_val = value_copy (old_val); | |
4256 | release_value (old_val); | |
4257 | } | |
4258 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4259 | } |
4260 | ||
c906108c SS |
4261 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4262 | is part of the bpstat is copied as well. */ | |
4263 | ||
4264 | bpstat | |
fba45db2 | 4265 | bpstat_copy (bpstat bs) |
c906108c SS |
4266 | { |
4267 | bpstat p = NULL; | |
4268 | bpstat tmp; | |
4269 | bpstat retval = NULL; | |
4270 | ||
4271 | if (bs == NULL) | |
4272 | return bs; | |
4273 | ||
4274 | for (; bs != NULL; bs = bs->next) | |
4275 | { | |
04afa70c | 4276 | tmp = new bpstats (*bs); |
31cc81e9 | 4277 | |
c906108c SS |
4278 | if (p == NULL) |
4279 | /* This is the first thing in the chain. */ | |
4280 | retval = tmp; | |
4281 | else | |
4282 | p->next = tmp; | |
4283 | p = tmp; | |
4284 | } | |
4285 | p->next = NULL; | |
4286 | return retval; | |
4287 | } | |
4288 | ||
4a64f543 | 4289 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4290 | |
4291 | bpstat | |
fba45db2 | 4292 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4293 | { |
c5aa993b JM |
4294 | if (bsp == NULL) |
4295 | return NULL; | |
c906108c | 4296 | |
c5aa993b JM |
4297 | for (; bsp != NULL; bsp = bsp->next) |
4298 | { | |
f431efe5 | 4299 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4300 | return bsp; |
4301 | } | |
c906108c SS |
4302 | return NULL; |
4303 | } | |
4304 | ||
ab04a2af TT |
4305 | /* See breakpoint.h. */ |
4306 | ||
47591c29 | 4307 | int |
427cd150 | 4308 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4309 | { |
ab04a2af TT |
4310 | for (; bsp != NULL; bsp = bsp->next) |
4311 | { | |
427cd150 TT |
4312 | if (bsp->breakpoint_at == NULL) |
4313 | { | |
4314 | /* A moribund location can never explain a signal other than | |
4315 | GDB_SIGNAL_TRAP. */ | |
4316 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4317 | return 1; |
427cd150 TT |
4318 | } |
4319 | else | |
47591c29 PA |
4320 | { |
4321 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4322 | sig)) | |
4323 | return 1; | |
4324 | } | |
ab04a2af TT |
4325 | } |
4326 | ||
47591c29 | 4327 | return 0; |
ab04a2af TT |
4328 | } |
4329 | ||
4a64f543 MS |
4330 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4331 | stopped at. *BSP upon return is a bpstat which points to the | |
4332 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4333 | good for anything but further calls to bpstat_num). | |
4334 | ||
8671a17b PA |
4335 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4336 | Return -1 if stopped at a breakpoint that has been deleted since | |
4337 | we set it. | |
4338 | Return 1 otherwise. */ | |
c906108c SS |
4339 | |
4340 | int | |
8671a17b | 4341 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4342 | { |
4343 | struct breakpoint *b; | |
4344 | ||
4345 | if ((*bsp) == NULL) | |
4346 | return 0; /* No more breakpoint values */ | |
8671a17b | 4347 | |
4a64f543 MS |
4348 | /* We assume we'll never have several bpstats that correspond to a |
4349 | single breakpoint -- otherwise, this function might return the | |
4350 | same number more than once and this will look ugly. */ | |
f431efe5 | 4351 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4352 | *bsp = (*bsp)->next; |
4353 | if (b == NULL) | |
4354 | return -1; /* breakpoint that's been deleted since */ | |
4355 | ||
4356 | *num = b->number; /* We have its number */ | |
4357 | return 1; | |
c906108c SS |
4358 | } |
4359 | ||
e93ca019 | 4360 | /* See breakpoint.h. */ |
c906108c SS |
4361 | |
4362 | void | |
e93ca019 | 4363 | bpstat_clear_actions (void) |
c906108c | 4364 | { |
e93ca019 JK |
4365 | struct thread_info *tp; |
4366 | bpstat bs; | |
4367 | ||
4368 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4369 | return; | |
4370 | ||
4371 | tp = find_thread_ptid (inferior_ptid); | |
4372 | if (tp == NULL) | |
4373 | return; | |
4374 | ||
4375 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4376 | { |
d1b0a7bf | 4377 | bs->commands = NULL; |
abf85f46 | 4378 | |
c906108c SS |
4379 | if (bs->old_val != NULL) |
4380 | { | |
4381 | value_free (bs->old_val); | |
4382 | bs->old_val = NULL; | |
4383 | } | |
4384 | } | |
4385 | } | |
4386 | ||
f3b1572e PA |
4387 | /* Called when a command is about to proceed the inferior. */ |
4388 | ||
4389 | static void | |
4390 | breakpoint_about_to_proceed (void) | |
4391 | { | |
4392 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4393 | { | |
4394 | struct thread_info *tp = inferior_thread (); | |
4395 | ||
4396 | /* Allow inferior function calls in breakpoint commands to not | |
4397 | interrupt the command list. When the call finishes | |
4398 | successfully, the inferior will be standing at the same | |
4399 | breakpoint as if nothing happened. */ | |
16c381f0 | 4400 | if (tp->control.in_infcall) |
f3b1572e PA |
4401 | return; |
4402 | } | |
4403 | ||
4404 | breakpoint_proceeded = 1; | |
4405 | } | |
4406 | ||
abf85f46 JK |
4407 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4408 | or its equivalent. */ | |
4409 | ||
4410 | static int | |
4411 | command_line_is_silent (struct command_line *cmd) | |
4412 | { | |
4f45d445 | 4413 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4414 | } |
4415 | ||
4a64f543 MS |
4416 | /* Execute all the commands associated with all the breakpoints at |
4417 | this location. Any of these commands could cause the process to | |
4418 | proceed beyond this point, etc. We look out for such changes by | |
4419 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4420 | |
347bddb7 PA |
4421 | Returns true if a breakpoint command resumed the inferior. In that |
4422 | case, it is the caller's responsibility to recall it again with the | |
4423 | bpstat of the current thread. */ | |
4424 | ||
4425 | static int | |
4426 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4427 | { |
4428 | bpstat bs; | |
347bddb7 | 4429 | int again = 0; |
c906108c SS |
4430 | |
4431 | /* Avoid endless recursion if a `source' command is contained | |
4432 | in bs->commands. */ | |
4433 | if (executing_breakpoint_commands) | |
347bddb7 | 4434 | return 0; |
c906108c | 4435 | |
81b1e71c TT |
4436 | scoped_restore save_executing |
4437 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4438 | |
1ac32117 | 4439 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4440 | |
4a64f543 | 4441 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4442 | bs = *bsp; |
4443 | ||
4444 | breakpoint_proceeded = 0; | |
4445 | for (; bs != NULL; bs = bs->next) | |
4446 | { | |
d1b0a7bf | 4447 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4448 | |
4449 | /* Take ownership of the BSP's command tree, if it has one. | |
4450 | ||
4451 | The command tree could legitimately contain commands like | |
4452 | 'step' and 'next', which call clear_proceed_status, which | |
4453 | frees stop_bpstat's command tree. To make sure this doesn't | |
4454 | free the tree we're executing out from under us, we need to | |
4455 | take ownership of the tree ourselves. Since a given bpstat's | |
4456 | commands are only executed once, we don't need to copy it; we | |
4457 | can clear the pointer in the bpstat, and make sure we free | |
4458 | the tree when we're done. */ | |
d1b0a7bf | 4459 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4460 | bs->commands = NULL; |
d1b0a7bf TT |
4461 | if (ccmd != NULL) |
4462 | cmd = ccmd.get (); | |
abf85f46 JK |
4463 | if (command_line_is_silent (cmd)) |
4464 | { | |
4465 | /* The action has been already done by bpstat_stop_status. */ | |
4466 | cmd = cmd->next; | |
4467 | } | |
6c50ab1c | 4468 | |
c906108c SS |
4469 | while (cmd != NULL) |
4470 | { | |
4471 | execute_control_command (cmd); | |
4472 | ||
4473 | if (breakpoint_proceeded) | |
4474 | break; | |
4475 | else | |
4476 | cmd = cmd->next; | |
4477 | } | |
6c50ab1c | 4478 | |
c906108c | 4479 | if (breakpoint_proceeded) |
32c1e744 | 4480 | { |
cb814510 | 4481 | if (current_ui->async) |
347bddb7 PA |
4482 | /* If we are in async mode, then the target might be still |
4483 | running, not stopped at any breakpoint, so nothing for | |
4484 | us to do here -- just return to the event loop. */ | |
4485 | ; | |
32c1e744 VP |
4486 | else |
4487 | /* In sync mode, when execute_control_command returns | |
4488 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4489 | Breakpoint commands for that stop were not run, since |
4490 | execute_command does not run breakpoint commands -- | |
4491 | only command_line_handler does, but that one is not | |
4492 | involved in execution of breakpoint commands. So, we | |
4493 | can now execute breakpoint commands. It should be | |
4494 | noted that making execute_command do bpstat actions is | |
4495 | not an option -- in this case we'll have recursive | |
4496 | invocation of bpstat for each breakpoint with a | |
4497 | command, and can easily blow up GDB stack. Instead, we | |
4498 | return true, which will trigger the caller to recall us | |
4499 | with the new stop_bpstat. */ | |
4500 | again = 1; | |
4501 | break; | |
32c1e744 | 4502 | } |
c906108c | 4503 | } |
347bddb7 PA |
4504 | return again; |
4505 | } | |
4506 | ||
4507 | void | |
4508 | bpstat_do_actions (void) | |
4509 | { | |
353d1d73 JK |
4510 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4511 | ||
347bddb7 PA |
4512 | /* Do any commands attached to breakpoint we are stopped at. */ |
4513 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4514 | && target_has_execution | |
4515 | && !is_exited (inferior_ptid) | |
4516 | && !is_executing (inferior_ptid)) | |
4517 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4518 | and only return when it is stopped at the next breakpoint, we | |
4519 | keep doing breakpoint actions until it returns false to | |
4520 | indicate the inferior was not resumed. */ | |
16c381f0 | 4521 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4522 | break; |
353d1d73 JK |
4523 | |
4524 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4525 | } |
4526 | ||
fa4727a6 DJ |
4527 | /* Print out the (old or new) value associated with a watchpoint. */ |
4528 | ||
4529 | static void | |
4530 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4531 | { | |
4532 | if (val == NULL) | |
4533 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4534 | else | |
79a45b7d TT |
4535 | { |
4536 | struct value_print_options opts; | |
4537 | get_user_print_options (&opts); | |
4538 | value_print (val, stream, &opts); | |
4539 | } | |
fa4727a6 DJ |
4540 | } |
4541 | ||
f303dbd6 PA |
4542 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4543 | debugging multiple threads. */ | |
4544 | ||
4545 | void | |
4546 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4547 | { | |
112e8700 | 4548 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4549 | return; |
4550 | ||
112e8700 | 4551 | uiout->text ("\n"); |
f303dbd6 PA |
4552 | |
4553 | if (show_thread_that_caused_stop ()) | |
4554 | { | |
4555 | const char *name; | |
4556 | struct thread_info *thr = inferior_thread (); | |
4557 | ||
112e8700 SM |
4558 | uiout->text ("Thread "); |
4559 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4560 | |
4561 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4562 | if (name != NULL) | |
4563 | { | |
112e8700 SM |
4564 | uiout->text (" \""); |
4565 | uiout->field_fmt ("name", "%s", name); | |
4566 | uiout->text ("\""); | |
f303dbd6 PA |
4567 | } |
4568 | ||
112e8700 | 4569 | uiout->text (" hit "); |
f303dbd6 PA |
4570 | } |
4571 | } | |
4572 | ||
e514a9d6 | 4573 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4574 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4575 | 'print_it' in the bpstat structure. Under some circumstances we |
4576 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4577 | normal_stop(). */ |
e514a9d6 JM |
4578 | |
4579 | static enum print_stop_action | |
4580 | print_bp_stop_message (bpstat bs) | |
4581 | { | |
4582 | switch (bs->print_it) | |
4583 | { | |
4584 | case print_it_noop: | |
4a64f543 | 4585 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4586 | return PRINT_UNKNOWN; |
4587 | break; | |
4588 | ||
4589 | case print_it_done: | |
4590 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4591 | relevant messages. */ |
e514a9d6 JM |
4592 | return PRINT_SRC_AND_LOC; |
4593 | break; | |
4594 | ||
4595 | case print_it_normal: | |
4f8d1dc6 | 4596 | { |
f431efe5 PA |
4597 | struct breakpoint *b = bs->breakpoint_at; |
4598 | ||
1a6a67de TJB |
4599 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4600 | which has since been deleted. */ | |
4601 | if (b == NULL) | |
4602 | return PRINT_UNKNOWN; | |
4603 | ||
348d480f PA |
4604 | /* Normal case. Call the breakpoint's print_it method. */ |
4605 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4606 | } |
348d480f | 4607 | break; |
3086aeae | 4608 | |
e514a9d6 | 4609 | default: |
8e65ff28 | 4610 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4611 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4612 | break; |
c906108c | 4613 | } |
c906108c SS |
4614 | } |
4615 | ||
edcc5120 TT |
4616 | /* A helper function that prints a shared library stopped event. */ |
4617 | ||
4618 | static void | |
4619 | print_solib_event (int is_catchpoint) | |
4620 | { | |
4621 | int any_deleted | |
4622 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4623 | int any_added | |
4624 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4625 | ||
4626 | if (!is_catchpoint) | |
4627 | { | |
4628 | if (any_added || any_deleted) | |
112e8700 | 4629 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4630 | else |
112e8700 SM |
4631 | current_uiout->text (_("Stopped due to shared library event (no " |
4632 | "libraries added or removed)\n")); | |
edcc5120 TT |
4633 | } |
4634 | ||
112e8700 SM |
4635 | if (current_uiout->is_mi_like_p ()) |
4636 | current_uiout->field_string ("reason", | |
4637 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4638 | |
4639 | if (any_deleted) | |
4640 | { | |
edcc5120 TT |
4641 | char *name; |
4642 | int ix; | |
4643 | ||
112e8700 | 4644 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4645 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4646 | for (ix = 0; |
4647 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4648 | ix, name); | |
4649 | ++ix) | |
4650 | { | |
4651 | if (ix > 0) | |
112e8700 SM |
4652 | current_uiout->text (" "); |
4653 | current_uiout->field_string ("library", name); | |
4654 | current_uiout->text ("\n"); | |
edcc5120 | 4655 | } |
edcc5120 TT |
4656 | } |
4657 | ||
4658 | if (any_added) | |
4659 | { | |
4660 | struct so_list *iter; | |
4661 | int ix; | |
edcc5120 | 4662 | |
112e8700 | 4663 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4664 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4665 | for (ix = 0; |
4666 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4667 | ix, iter); | |
4668 | ++ix) | |
4669 | { | |
4670 | if (ix > 0) | |
112e8700 SM |
4671 | current_uiout->text (" "); |
4672 | current_uiout->field_string ("library", iter->so_name); | |
4673 | current_uiout->text ("\n"); | |
edcc5120 | 4674 | } |
edcc5120 TT |
4675 | } |
4676 | } | |
4677 | ||
e514a9d6 JM |
4678 | /* Print a message indicating what happened. This is called from |
4679 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4680 | list - a list of the eventpoints that caused this stop. KIND is |
4681 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4682 | routine calls the generic print routine for printing a message |
4683 | about reasons for stopping. This will print (for example) the | |
4684 | "Breakpoint n," part of the output. The return value of this | |
4685 | routine is one of: | |
c906108c | 4686 | |
4a64f543 | 4687 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4688 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4689 | code to print the location. An example is |
c5aa993b JM |
4690 | "Breakpoint 1, " which should be followed by |
4691 | the location. | |
917317f4 | 4692 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4693 | to also print the location part of the message. |
4694 | An example is the catch/throw messages, which | |
4a64f543 | 4695 | don't require a location appended to the end. |
917317f4 | 4696 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4697 | further info to be printed. */ |
c906108c | 4698 | |
917317f4 | 4699 | enum print_stop_action |
36dfb11c | 4700 | bpstat_print (bpstat bs, int kind) |
c906108c | 4701 | { |
f486487f | 4702 | enum print_stop_action val; |
c5aa993b | 4703 | |
c906108c | 4704 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4705 | (Currently all watchpoints go on the bpstat whether hit or not. |
4706 | That probably could (should) be changed, provided care is taken | |
c906108c | 4707 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4708 | for (; bs; bs = bs->next) |
4709 | { | |
4710 | val = print_bp_stop_message (bs); | |
4711 | if (val == PRINT_SRC_ONLY | |
4712 | || val == PRINT_SRC_AND_LOC | |
4713 | || val == PRINT_NOTHING) | |
4714 | return val; | |
4715 | } | |
c906108c | 4716 | |
36dfb11c TT |
4717 | /* If we had hit a shared library event breakpoint, |
4718 | print_bp_stop_message would print out this message. If we hit an | |
4719 | OS-level shared library event, do the same thing. */ | |
4720 | if (kind == TARGET_WAITKIND_LOADED) | |
4721 | { | |
edcc5120 | 4722 | print_solib_event (0); |
36dfb11c TT |
4723 | return PRINT_NOTHING; |
4724 | } | |
4725 | ||
e514a9d6 | 4726 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4727 | with and nothing was printed. */ |
917317f4 | 4728 | return PRINT_UNKNOWN; |
c906108c SS |
4729 | } |
4730 | ||
bf469271 | 4731 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4732 | |
bf469271 PA |
4733 | static bool |
4734 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4735 | { |
278cd55f | 4736 | struct value *mark = value_mark (); |
bf469271 | 4737 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4738 | |
c906108c | 4739 | value_free_to_mark (mark); |
bf469271 | 4740 | return res; |
c906108c SS |
4741 | } |
4742 | ||
5760d0ab | 4743 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4744 | |
04afa70c TT |
4745 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4746 | : next (NULL), | |
4747 | bp_location_at (bl), | |
4748 | breakpoint_at (bl->owner), | |
4749 | commands (NULL), | |
4750 | old_val (NULL), | |
4751 | print (0), | |
4752 | stop (0), | |
4753 | print_it (print_it_normal) | |
c906108c | 4754 | { |
f431efe5 | 4755 | incref_bp_location (bl); |
04afa70c TT |
4756 | **bs_link_pointer = this; |
4757 | *bs_link_pointer = &next; | |
4758 | } | |
4759 | ||
4760 | bpstats::bpstats () | |
4761 | : next (NULL), | |
4762 | bp_location_at (NULL), | |
4763 | breakpoint_at (NULL), | |
4764 | commands (NULL), | |
4765 | old_val (NULL), | |
4766 | print (0), | |
4767 | stop (0), | |
4768 | print_it (print_it_normal) | |
4769 | { | |
c906108c SS |
4770 | } |
4771 | \f | |
d983da9c DJ |
4772 | /* The target has stopped with waitstatus WS. Check if any hardware |
4773 | watchpoints have triggered, according to the target. */ | |
4774 | ||
4775 | int | |
4776 | watchpoints_triggered (struct target_waitstatus *ws) | |
4777 | { | |
d92524f1 | 4778 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4779 | CORE_ADDR addr; |
4780 | struct breakpoint *b; | |
4781 | ||
4782 | if (!stopped_by_watchpoint) | |
4783 | { | |
4784 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4785 | as not triggered. */ | |
4786 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4787 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4788 | { |
4789 | struct watchpoint *w = (struct watchpoint *) b; | |
4790 | ||
4791 | w->watchpoint_triggered = watch_triggered_no; | |
4792 | } | |
d983da9c DJ |
4793 | |
4794 | return 0; | |
4795 | } | |
4796 | ||
4797 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4798 | { | |
4799 | /* We were stopped by a watchpoint, but we don't know where. | |
4800 | Mark all watchpoints as unknown. */ | |
4801 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4802 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4803 | { |
4804 | struct watchpoint *w = (struct watchpoint *) b; | |
4805 | ||
4806 | w->watchpoint_triggered = watch_triggered_unknown; | |
4807 | } | |
d983da9c | 4808 | |
3c4797ba | 4809 | return 1; |
d983da9c DJ |
4810 | } |
4811 | ||
4812 | /* The target could report the data address. Mark watchpoints | |
4813 | affected by this data address as triggered, and all others as not | |
4814 | triggered. */ | |
4815 | ||
4816 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4817 | if (is_hardware_watchpoint (b)) |
d983da9c | 4818 | { |
3a5c3e22 | 4819 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4820 | struct bp_location *loc; |
d983da9c | 4821 | |
3a5c3e22 | 4822 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4823 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4824 | { |
3a5c3e22 | 4825 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4826 | { |
3a5c3e22 PA |
4827 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4828 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4829 | |
4830 | if (newaddr == start) | |
4831 | { | |
3a5c3e22 | 4832 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4833 | break; |
4834 | } | |
4835 | } | |
4836 | /* Exact match not required. Within range is sufficient. */ | |
4837 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4838 | addr, loc->address, | |
4839 | loc->length)) | |
4840 | { | |
3a5c3e22 | 4841 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4842 | break; |
4843 | } | |
4844 | } | |
d983da9c DJ |
4845 | } |
4846 | ||
4847 | return 1; | |
4848 | } | |
4849 | ||
bf469271 PA |
4850 | /* Possible return values for watchpoint_check. */ |
4851 | enum wp_check_result | |
4852 | { | |
4853 | /* The watchpoint has been deleted. */ | |
4854 | WP_DELETED = 1, | |
4855 | ||
4856 | /* The value has changed. */ | |
4857 | WP_VALUE_CHANGED = 2, | |
4858 | ||
4859 | /* The value has not changed. */ | |
4860 | WP_VALUE_NOT_CHANGED = 3, | |
4861 | ||
4862 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4863 | WP_IGNORE = 4, | |
4864 | }; | |
c906108c SS |
4865 | |
4866 | #define BP_TEMPFLAG 1 | |
4867 | #define BP_HARDWAREFLAG 2 | |
4868 | ||
4a64f543 | 4869 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4870 | changed. */ |
553e4c11 | 4871 | |
bf469271 PA |
4872 | static wp_check_result |
4873 | watchpoint_check (bpstat bs) | |
c906108c | 4874 | { |
3a5c3e22 | 4875 | struct watchpoint *b; |
c906108c SS |
4876 | struct frame_info *fr; |
4877 | int within_current_scope; | |
4878 | ||
f431efe5 | 4879 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4880 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4881 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4882 | |
f6bc2008 PA |
4883 | /* If this is a local watchpoint, we only want to check if the |
4884 | watchpoint frame is in scope if the current thread is the thread | |
4885 | that was used to create the watchpoint. */ | |
4886 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4887 | return WP_IGNORE; |
f6bc2008 | 4888 | |
c906108c SS |
4889 | if (b->exp_valid_block == NULL) |
4890 | within_current_scope = 1; | |
4891 | else | |
4892 | { | |
edb3359d DJ |
4893 | struct frame_info *frame = get_current_frame (); |
4894 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4895 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4896 | ||
c9cf6e20 | 4897 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4898 | still in the function but the stack frame has already been |
4899 | invalidated. Since we can't rely on the values of local | |
4900 | variables after the stack has been destroyed, we are treating | |
4901 | the watchpoint in that state as `not changed' without further | |
4902 | checking. Don't mark watchpoints as changed if the current | |
4903 | frame is in an epilogue - even if they are in some other | |
4904 | frame, our view of the stack is likely to be wrong and | |
4905 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4906 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4907 | return WP_IGNORE; |
a0f49112 | 4908 | |
101dcfbe | 4909 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4910 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4911 | |
4912 | /* If we've gotten confused in the unwinder, we might have | |
4913 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4914 | if (within_current_scope) |
4915 | { | |
4916 | struct symbol *function; | |
4917 | ||
4918 | function = get_frame_function (fr); | |
4919 | if (function == NULL | |
4920 | || !contained_in (b->exp_valid_block, | |
4921 | SYMBOL_BLOCK_VALUE (function))) | |
4922 | within_current_scope = 0; | |
4923 | } | |
69fbadd5 | 4924 | |
edb3359d | 4925 | if (within_current_scope) |
c906108c SS |
4926 | /* If we end up stopping, the current frame will get selected |
4927 | in normal_stop. So this call to select_frame won't affect | |
4928 | the user. */ | |
0f7d239c | 4929 | select_frame (fr); |
c906108c | 4930 | } |
c5aa993b | 4931 | |
c906108c SS |
4932 | if (within_current_scope) |
4933 | { | |
4a64f543 MS |
4934 | /* We use value_{,free_to_}mark because it could be a *long* |
4935 | time before we return to the command level and call | |
4936 | free_all_values. We can't call free_all_values because we | |
4937 | might be in the middle of evaluating a function call. */ | |
c906108c | 4938 | |
0cf6dd15 | 4939 | int pc = 0; |
9c06b0b4 | 4940 | struct value *mark; |
fa4727a6 DJ |
4941 | struct value *new_val; |
4942 | ||
c1fc2657 | 4943 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4944 | /* Since we don't know the exact trigger address (from |
4945 | stopped_data_address), just tell the user we've triggered | |
4946 | a mask watchpoint. */ | |
4947 | return WP_VALUE_CHANGED; | |
4948 | ||
4949 | mark = value_mark (); | |
4d01a485 | 4950 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4951 | |
bb9d5f81 PP |
4952 | if (b->val_bitsize != 0) |
4953 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4954 | ||
4a64f543 MS |
4955 | /* We use value_equal_contents instead of value_equal because |
4956 | the latter coerces an array to a pointer, thus comparing just | |
4957 | the address of the array instead of its contents. This is | |
4958 | not what we want. */ | |
fa4727a6 | 4959 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4960 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4961 | { |
fa4727a6 DJ |
4962 | if (new_val != NULL) |
4963 | { | |
4964 | release_value (new_val); | |
4965 | value_free_to_mark (mark); | |
4966 | } | |
c906108c SS |
4967 | bs->old_val = b->val; |
4968 | b->val = new_val; | |
fa4727a6 | 4969 | b->val_valid = 1; |
c906108c SS |
4970 | return WP_VALUE_CHANGED; |
4971 | } | |
4972 | else | |
4973 | { | |
60e1c644 | 4974 | /* Nothing changed. */ |
c906108c | 4975 | value_free_to_mark (mark); |
c906108c SS |
4976 | return WP_VALUE_NOT_CHANGED; |
4977 | } | |
4978 | } | |
4979 | else | |
4980 | { | |
4981 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4982 | if we temporarily ignored the watchpoint, then when |
4983 | we reenter the block in which it is valid it contains | |
4984 | garbage (in the case of a function, it may have two | |
4985 | garbage values, one before and one after the prologue). | |
4986 | So we can't even detect the first assignment to it and | |
4987 | watch after that (since the garbage may or may not equal | |
4988 | the first value assigned). */ | |
348d480f PA |
4989 | /* We print all the stop information in |
4990 | breakpoint_ops->print_it, but in this case, by the time we | |
4991 | call breakpoint_ops->print_it this bp will be deleted | |
4992 | already. So we have no choice but print the information | |
4993 | here. */ | |
468afe6c | 4994 | |
0e454242 | 4995 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4996 | { |
4997 | struct ui_out *uiout = current_uiout; | |
4998 | ||
112e8700 SM |
4999 | if (uiout->is_mi_like_p ()) |
5000 | uiout->field_string | |
5001 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5002 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 5003 | uiout->field_int ("wpnum", b->number); |
112e8700 | 5004 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
5005 | "which its expression is valid.\n"); |
5006 | } | |
4ce44c66 | 5007 | |
cdac0397 | 5008 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5009 | b->commands = NULL; |
d0fb5eae | 5010 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5011 | |
5012 | return WP_DELETED; | |
5013 | } | |
5014 | } | |
5015 | ||
18a18393 | 5016 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5017 | breakpoint location BL. This function does not check if we should |
5018 | stop, only if BL explains the stop. */ | |
5019 | ||
18a18393 | 5020 | static int |
6c95b8df | 5021 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5022 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5023 | const struct target_waitstatus *ws) |
18a18393 VP |
5024 | { |
5025 | struct breakpoint *b = bl->owner; | |
5026 | ||
348d480f | 5027 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5028 | gdb_assert (b != NULL); |
5029 | ||
bd522513 | 5030 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5031 | } |
5032 | ||
3a5c3e22 PA |
5033 | /* Determine if the watched values have actually changed, and we |
5034 | should stop. If not, set BS->stop to 0. */ | |
5035 | ||
18a18393 VP |
5036 | static void |
5037 | bpstat_check_watchpoint (bpstat bs) | |
5038 | { | |
2bdf28a0 | 5039 | const struct bp_location *bl; |
3a5c3e22 | 5040 | struct watchpoint *b; |
2bdf28a0 JK |
5041 | |
5042 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5043 | bl = bs->bp_location_at; |
2bdf28a0 | 5044 | gdb_assert (bl != NULL); |
3a5c3e22 | 5045 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5046 | gdb_assert (b != NULL); |
18a18393 | 5047 | |
18a18393 | 5048 | { |
18a18393 VP |
5049 | int must_check_value = 0; |
5050 | ||
c1fc2657 | 5051 | if (b->type == bp_watchpoint) |
18a18393 VP |
5052 | /* For a software watchpoint, we must always check the |
5053 | watched value. */ | |
5054 | must_check_value = 1; | |
5055 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5056 | /* We have a hardware watchpoint (read, write, or access) | |
5057 | and the target earlier reported an address watched by | |
5058 | this watchpoint. */ | |
5059 | must_check_value = 1; | |
5060 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5061 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5062 | /* We were stopped by a hardware watchpoint, but the target could |
5063 | not report the data address. We must check the watchpoint's | |
5064 | value. Access and read watchpoints are out of luck; without | |
5065 | a data address, we can't figure it out. */ | |
5066 | must_check_value = 1; | |
3a5c3e22 | 5067 | |
18a18393 VP |
5068 | if (must_check_value) |
5069 | { | |
bf469271 PA |
5070 | wp_check_result e; |
5071 | ||
5072 | TRY | |
5073 | { | |
5074 | e = watchpoint_check (bs); | |
5075 | } | |
5076 | CATCH (ex, RETURN_MASK_ALL) | |
5077 | { | |
5078 | exception_fprintf (gdb_stderr, ex, | |
5079 | "Error evaluating expression " | |
5080 | "for watchpoint %d\n", | |
5081 | b->number); | |
5082 | ||
5083 | SWITCH_THRU_ALL_UIS () | |
5084 | { | |
5085 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5086 | b->number); | |
5087 | } | |
5088 | watchpoint_del_at_next_stop (b); | |
5089 | e = WP_DELETED; | |
5090 | } | |
5091 | END_CATCH | |
5092 | ||
18a18393 VP |
5093 | switch (e) |
5094 | { | |
5095 | case WP_DELETED: | |
5096 | /* We've already printed what needs to be printed. */ | |
5097 | bs->print_it = print_it_done; | |
5098 | /* Stop. */ | |
5099 | break; | |
60e1c644 PA |
5100 | case WP_IGNORE: |
5101 | bs->print_it = print_it_noop; | |
5102 | bs->stop = 0; | |
5103 | break; | |
18a18393 | 5104 | case WP_VALUE_CHANGED: |
c1fc2657 | 5105 | if (b->type == bp_read_watchpoint) |
18a18393 | 5106 | { |
85d721b8 PA |
5107 | /* There are two cases to consider here: |
5108 | ||
4a64f543 | 5109 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5110 | In that case, trust the target, and always report |
5111 | the watchpoint hit to the user. Even though | |
5112 | reads don't cause value changes, the value may | |
5113 | have changed since the last time it was read, and | |
5114 | since we're not trapping writes, we will not see | |
5115 | those, and as such we should ignore our notion of | |
5116 | old value. | |
5117 | ||
4a64f543 | 5118 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5119 | reads and writes. There are two ways this may |
5120 | happen: | |
5121 | ||
4a64f543 | 5122 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5123 | reads only, but can break on accesses (reads or |
5124 | writes), such as e.g., x86. We detect this case | |
5125 | at the time we try to insert read watchpoints. | |
5126 | ||
4a64f543 | 5127 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5128 | watchpoints, but, the user set an access or write |
5129 | watchpoint watching the same memory as this read | |
5130 | watchpoint. | |
5131 | ||
5132 | If we're watching memory writes as well as reads, | |
5133 | ignore watchpoint hits when we find that the | |
5134 | value hasn't changed, as reads don't cause | |
5135 | changes. This still gives false positives when | |
5136 | the program writes the same value to memory as | |
5137 | what there was already in memory (we will confuse | |
5138 | it for a read), but it's much better than | |
5139 | nothing. */ | |
5140 | ||
5141 | int other_write_watchpoint = 0; | |
5142 | ||
5143 | if (bl->watchpoint_type == hw_read) | |
5144 | { | |
5145 | struct breakpoint *other_b; | |
5146 | ||
5147 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5148 | if (other_b->type == bp_hardware_watchpoint |
5149 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5150 | { |
3a5c3e22 PA |
5151 | struct watchpoint *other_w = |
5152 | (struct watchpoint *) other_b; | |
5153 | ||
5154 | if (other_w->watchpoint_triggered | |
5155 | == watch_triggered_yes) | |
5156 | { | |
5157 | other_write_watchpoint = 1; | |
5158 | break; | |
5159 | } | |
85d721b8 PA |
5160 | } |
5161 | } | |
5162 | ||
5163 | if (other_write_watchpoint | |
5164 | || bl->watchpoint_type == hw_access) | |
5165 | { | |
5166 | /* We're watching the same memory for writes, | |
5167 | and the value changed since the last time we | |
5168 | updated it, so this trap must be for a write. | |
5169 | Ignore it. */ | |
5170 | bs->print_it = print_it_noop; | |
5171 | bs->stop = 0; | |
5172 | } | |
18a18393 VP |
5173 | } |
5174 | break; | |
5175 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5176 | if (b->type == bp_hardware_watchpoint |
5177 | || b->type == bp_watchpoint) | |
18a18393 VP |
5178 | { |
5179 | /* Don't stop: write watchpoints shouldn't fire if | |
5180 | the value hasn't changed. */ | |
5181 | bs->print_it = print_it_noop; | |
5182 | bs->stop = 0; | |
5183 | } | |
5184 | /* Stop. */ | |
5185 | break; | |
5186 | default: | |
5187 | /* Can't happen. */ | |
18a18393 VP |
5188 | break; |
5189 | } | |
5190 | } | |
5191 | else /* must_check_value == 0 */ | |
5192 | { | |
5193 | /* This is a case where some watchpoint(s) triggered, but | |
5194 | not at the address of this watchpoint, or else no | |
5195 | watchpoint triggered after all. So don't print | |
5196 | anything for this watchpoint. */ | |
5197 | bs->print_it = print_it_noop; | |
5198 | bs->stop = 0; | |
5199 | } | |
5200 | } | |
5201 | } | |
5202 | ||
7d4df6a4 DE |
5203 | /* For breakpoints that are currently marked as telling gdb to stop, |
5204 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5205 | of breakpoint referred to by BS. If we should not stop for this |
5206 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5207 | |
18a18393 VP |
5208 | static void |
5209 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5210 | { | |
2bdf28a0 JK |
5211 | const struct bp_location *bl; |
5212 | struct breakpoint *b; | |
bf469271 PA |
5213 | /* Assume stop. */ |
5214 | bool condition_result = true; | |
7d4df6a4 DE |
5215 | struct expression *cond; |
5216 | ||
5217 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5218 | |
5219 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5220 | bl = bs->bp_location_at; |
2bdf28a0 | 5221 | gdb_assert (bl != NULL); |
f431efe5 | 5222 | b = bs->breakpoint_at; |
2bdf28a0 | 5223 | gdb_assert (b != NULL); |
18a18393 | 5224 | |
b775012e LM |
5225 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5226 | need to do so again since GDB does not know if we stopped due to a | |
5227 | breakpoint or a single step breakpoint. */ | |
5228 | ||
18a18393 | 5229 | if (frame_id_p (b->frame_id) |
edb3359d | 5230 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5231 | { |
7d4df6a4 DE |
5232 | bs->stop = 0; |
5233 | return; | |
5234 | } | |
60e1c644 | 5235 | |
12ab52e9 PA |
5236 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5237 | evaluating the condition if this isn't the specified | |
5238 | thread/task. */ | |
5d5658a1 | 5239 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5240 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5241 | ||
6c1b0f7b DE |
5242 | { |
5243 | bs->stop = 0; | |
5244 | return; | |
5245 | } | |
5246 | ||
6dddc817 DE |
5247 | /* Evaluate extension language breakpoints that have a "stop" method |
5248 | implemented. */ | |
5249 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5250 | |
7d4df6a4 DE |
5251 | if (is_watchpoint (b)) |
5252 | { | |
5253 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5254 | |
4d01a485 | 5255 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5256 | } |
5257 | else | |
4d01a485 | 5258 | cond = bl->cond.get (); |
60e1c644 | 5259 | |
7d4df6a4 DE |
5260 | if (cond && b->disposition != disp_del_at_next_stop) |
5261 | { | |
5262 | int within_current_scope = 1; | |
5263 | struct watchpoint * w; | |
60e1c644 | 5264 | |
7d4df6a4 DE |
5265 | /* We use value_mark and value_free_to_mark because it could |
5266 | be a long time before we return to the command level and | |
5267 | call free_all_values. We can't call free_all_values | |
5268 | because we might be in the middle of evaluating a | |
5269 | function call. */ | |
5270 | struct value *mark = value_mark (); | |
5271 | ||
5272 | if (is_watchpoint (b)) | |
5273 | w = (struct watchpoint *) b; | |
5274 | else | |
5275 | w = NULL; | |
5276 | ||
5277 | /* Need to select the frame, with all that implies so that | |
5278 | the conditions will have the right context. Because we | |
5279 | use the frame, we will not see an inlined function's | |
5280 | variables when we arrive at a breakpoint at the start | |
5281 | of the inlined function; the current frame will be the | |
5282 | call site. */ | |
5283 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5284 | select_frame (get_current_frame ()); | |
5285 | else | |
18a18393 | 5286 | { |
7d4df6a4 DE |
5287 | struct frame_info *frame; |
5288 | ||
5289 | /* For local watchpoint expressions, which particular | |
5290 | instance of a local is being watched matters, so we | |
5291 | keep track of the frame to evaluate the expression | |
5292 | in. To evaluate the condition however, it doesn't | |
5293 | really matter which instantiation of the function | |
5294 | where the condition makes sense triggers the | |
5295 | watchpoint. This allows an expression like "watch | |
5296 | global if q > 10" set in `func', catch writes to | |
5297 | global on all threads that call `func', or catch | |
5298 | writes on all recursive calls of `func' by a single | |
5299 | thread. We simply always evaluate the condition in | |
5300 | the innermost frame that's executing where it makes | |
5301 | sense to evaluate the condition. It seems | |
5302 | intuitive. */ | |
5303 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5304 | if (frame != NULL) | |
5305 | select_frame (frame); | |
5306 | else | |
5307 | within_current_scope = 0; | |
18a18393 | 5308 | } |
7d4df6a4 | 5309 | if (within_current_scope) |
bf469271 PA |
5310 | { |
5311 | TRY | |
5312 | { | |
5313 | condition_result = breakpoint_cond_eval (cond); | |
5314 | } | |
5315 | CATCH (ex, RETURN_MASK_ALL) | |
5316 | { | |
5317 | exception_fprintf (gdb_stderr, ex, | |
5318 | "Error in testing breakpoint condition:\n"); | |
5319 | } | |
5320 | END_CATCH | |
5321 | } | |
7d4df6a4 | 5322 | else |
18a18393 | 5323 | { |
7d4df6a4 DE |
5324 | warning (_("Watchpoint condition cannot be tested " |
5325 | "in the current scope")); | |
5326 | /* If we failed to set the right context for this | |
5327 | watchpoint, unconditionally report it. */ | |
18a18393 | 5328 | } |
7d4df6a4 DE |
5329 | /* FIXME-someday, should give breakpoint #. */ |
5330 | value_free_to_mark (mark); | |
18a18393 | 5331 | } |
7d4df6a4 | 5332 | |
bf469271 | 5333 | if (cond && !condition_result) |
7d4df6a4 DE |
5334 | { |
5335 | bs->stop = 0; | |
5336 | } | |
7d4df6a4 DE |
5337 | else if (b->ignore_count > 0) |
5338 | { | |
5339 | b->ignore_count--; | |
5340 | bs->stop = 0; | |
5341 | /* Increase the hit count even though we don't stop. */ | |
5342 | ++(b->hit_count); | |
5343 | observer_notify_breakpoint_modified (b); | |
5344 | } | |
18a18393 VP |
5345 | } |
5346 | ||
1cf4d951 PA |
5347 | /* Returns true if we need to track moribund locations of LOC's type |
5348 | on the current target. */ | |
5349 | ||
5350 | static int | |
5351 | need_moribund_for_location_type (struct bp_location *loc) | |
5352 | { | |
5353 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5354 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5355 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5356 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5357 | } | |
5358 | ||
18a18393 | 5359 | |
9709f61c | 5360 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5361 | BP_ADDR in thread PTID. |
c906108c | 5362 | |
d983da9c | 5363 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5364 | don't understand this stop. Result is a chain of bpstat's such |
5365 | that: | |
c906108c | 5366 | |
c5aa993b | 5367 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5368 | |
c5aa993b | 5369 | if we understand why we stopped, the result is not null. |
c906108c | 5370 | |
c5aa993b JM |
5371 | Each element of the chain refers to a particular breakpoint or |
5372 | watchpoint at which we have stopped. (We may have stopped for | |
5373 | several reasons concurrently.) | |
c906108c | 5374 | |
c5aa993b JM |
5375 | Each element of the chain has valid next, breakpoint_at, |
5376 | commands, FIXME??? fields. */ | |
c906108c SS |
5377 | |
5378 | bpstat | |
accd0bcd | 5379 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5380 | CORE_ADDR bp_addr, ptid_t ptid, |
5381 | const struct target_waitstatus *ws) | |
c906108c | 5382 | { |
0d381245 | 5383 | struct breakpoint *b = NULL; |
afe38095 | 5384 | struct bp_location *bl; |
20874c92 | 5385 | struct bp_location *loc; |
5760d0ab JK |
5386 | /* First item of allocated bpstat's. */ |
5387 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5388 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5389 | bpstat bs; |
20874c92 | 5390 | int ix; |
429374b8 | 5391 | int need_remove_insert; |
f431efe5 | 5392 | int removed_any; |
c906108c | 5393 | |
f431efe5 PA |
5394 | /* First, build the bpstat chain with locations that explain a |
5395 | target stop, while being careful to not set the target running, | |
5396 | as that may invalidate locations (in particular watchpoint | |
5397 | locations are recreated). Resuming will happen here with | |
5398 | breakpoint conditions or watchpoint expressions that include | |
5399 | inferior function calls. */ | |
c5aa993b | 5400 | |
429374b8 JK |
5401 | ALL_BREAKPOINTS (b) |
5402 | { | |
1a853c52 | 5403 | if (!breakpoint_enabled (b)) |
429374b8 | 5404 | continue; |
a5606eee | 5405 | |
429374b8 JK |
5406 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5407 | { | |
4a64f543 MS |
5408 | /* For hardware watchpoints, we look only at the first |
5409 | location. The watchpoint_check function will work on the | |
5410 | entire expression, not the individual locations. For | |
5411 | read watchpoints, the watchpoints_triggered function has | |
5412 | checked all locations already. */ | |
429374b8 JK |
5413 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5414 | break; | |
18a18393 | 5415 | |
f6592439 | 5416 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5417 | continue; |
c5aa993b | 5418 | |
09ac7c10 | 5419 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5420 | continue; |
c5aa993b | 5421 | |
4a64f543 MS |
5422 | /* Come here if it's a watchpoint, or if the break address |
5423 | matches. */ | |
c5aa993b | 5424 | |
04afa70c | 5425 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5426 | explain stop. */ |
c5aa993b | 5427 | |
f431efe5 PA |
5428 | /* Assume we stop. Should we find a watchpoint that is not |
5429 | actually triggered, or if the condition of the breakpoint | |
5430 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5431 | bs->stop = 1; |
5432 | bs->print = 1; | |
d983da9c | 5433 | |
f431efe5 PA |
5434 | /* If this is a scope breakpoint, mark the associated |
5435 | watchpoint as triggered so that we will handle the | |
5436 | out-of-scope event. We'll get to the watchpoint next | |
5437 | iteration. */ | |
d0fb5eae | 5438 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5439 | { |
5440 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5441 | ||
5442 | w->watchpoint_triggered = watch_triggered_yes; | |
5443 | } | |
f431efe5 PA |
5444 | } |
5445 | } | |
5446 | ||
7c16b83e | 5447 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5448 | if (!target_supports_stopped_by_sw_breakpoint () |
5449 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5450 | { |
1cf4d951 | 5451 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5452 | { |
1cf4d951 PA |
5453 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5454 | && need_moribund_for_location_type (loc)) | |
5455 | { | |
04afa70c | 5456 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5457 | /* For hits of moribund locations, we should just proceed. */ |
5458 | bs->stop = 0; | |
5459 | bs->print = 0; | |
5460 | bs->print_it = print_it_noop; | |
5461 | } | |
f431efe5 PA |
5462 | } |
5463 | } | |
5464 | ||
edcc5120 TT |
5465 | /* A bit of special processing for shlib breakpoints. We need to |
5466 | process solib loading here, so that the lists of loaded and | |
5467 | unloaded libraries are correct before we handle "catch load" and | |
5468 | "catch unload". */ | |
5469 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5470 | { | |
5d268276 | 5471 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5472 | { |
5473 | handle_solib_event (); | |
5474 | break; | |
5475 | } | |
5476 | } | |
5477 | ||
f431efe5 PA |
5478 | /* Now go through the locations that caused the target to stop, and |
5479 | check whether we're interested in reporting this stop to higher | |
5480 | layers, or whether we should resume the target transparently. */ | |
5481 | ||
5482 | removed_any = 0; | |
5483 | ||
5760d0ab | 5484 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5485 | { |
5486 | if (!bs->stop) | |
5487 | continue; | |
5488 | ||
f431efe5 | 5489 | b = bs->breakpoint_at; |
348d480f PA |
5490 | b->ops->check_status (bs); |
5491 | if (bs->stop) | |
28010a5d | 5492 | { |
348d480f | 5493 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5494 | |
429374b8 JK |
5495 | if (bs->stop) |
5496 | { | |
5497 | ++(b->hit_count); | |
8d3788bd | 5498 | observer_notify_breakpoint_modified (b); |
c906108c | 5499 | |
4a64f543 | 5500 | /* We will stop here. */ |
429374b8 JK |
5501 | if (b->disposition == disp_disable) |
5502 | { | |
816338b5 | 5503 | --(b->enable_count); |
1a853c52 | 5504 | if (b->enable_count <= 0) |
429374b8 | 5505 | b->enable_state = bp_disabled; |
f431efe5 | 5506 | removed_any = 1; |
429374b8 JK |
5507 | } |
5508 | if (b->silent) | |
5509 | bs->print = 0; | |
5510 | bs->commands = b->commands; | |
abf85f46 | 5511 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5512 | ? bs->commands.get () : NULL)) |
abf85f46 | 5513 | bs->print = 0; |
9d6e6e84 HZ |
5514 | |
5515 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5516 | } |
5517 | ||
348d480f | 5518 | } |
a9b3a50f PA |
5519 | |
5520 | /* Print nothing for this entry if we don't stop or don't | |
5521 | print. */ | |
5522 | if (!bs->stop || !bs->print) | |
5523 | bs->print_it = print_it_noop; | |
429374b8 | 5524 | } |
876fa593 | 5525 | |
d983da9c DJ |
5526 | /* If we aren't stopping, the value of some hardware watchpoint may |
5527 | not have changed, but the intermediate memory locations we are | |
5528 | watching may have. Don't bother if we're stopping; this will get | |
5529 | done later. */ | |
d832cb68 | 5530 | need_remove_insert = 0; |
5760d0ab JK |
5531 | if (! bpstat_causes_stop (bs_head)) |
5532 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5533 | if (!bs->stop |
f431efe5 PA |
5534 | && bs->breakpoint_at |
5535 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5536 | { |
3a5c3e22 PA |
5537 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5538 | ||
5539 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5540 | need_remove_insert = 1; |
d983da9c DJ |
5541 | } |
5542 | ||
d832cb68 | 5543 | if (need_remove_insert) |
44702360 | 5544 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5545 | else if (removed_any) |
44702360 | 5546 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5547 | |
5760d0ab | 5548 | return bs_head; |
c906108c | 5549 | } |
628fe4e4 JK |
5550 | |
5551 | static void | |
5552 | handle_jit_event (void) | |
5553 | { | |
5554 | struct frame_info *frame; | |
5555 | struct gdbarch *gdbarch; | |
5556 | ||
243a9253 PA |
5557 | if (debug_infrun) |
5558 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5559 | ||
628fe4e4 JK |
5560 | /* Switch terminal for any messages produced by |
5561 | breakpoint_re_set. */ | |
223ffa71 | 5562 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5563 | |
5564 | frame = get_current_frame (); | |
5565 | gdbarch = get_frame_arch (frame); | |
5566 | ||
5567 | jit_event_handler (gdbarch); | |
5568 | ||
223ffa71 | 5569 | target_terminal::inferior (); |
628fe4e4 JK |
5570 | } |
5571 | ||
5572 | /* Prepare WHAT final decision for infrun. */ | |
5573 | ||
5574 | /* Decide what infrun needs to do with this bpstat. */ | |
5575 | ||
c906108c | 5576 | struct bpstat_what |
0e30163f | 5577 | bpstat_what (bpstat bs_head) |
c906108c | 5578 | { |
c906108c | 5579 | struct bpstat_what retval; |
0e30163f | 5580 | bpstat bs; |
c906108c | 5581 | |
628fe4e4 | 5582 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5583 | retval.call_dummy = STOP_NONE; |
186c406b | 5584 | retval.is_longjmp = 0; |
628fe4e4 | 5585 | |
0e30163f | 5586 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5587 | { |
628fe4e4 JK |
5588 | /* Extract this BS's action. After processing each BS, we check |
5589 | if its action overrides all we've seem so far. */ | |
5590 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5591 | enum bptype bptype; | |
5592 | ||
c906108c | 5593 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5594 | { |
5595 | /* I suspect this can happen if it was a momentary | |
5596 | breakpoint which has since been deleted. */ | |
5597 | bptype = bp_none; | |
5598 | } | |
20874c92 | 5599 | else |
f431efe5 | 5600 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5601 | |
5602 | switch (bptype) | |
c906108c SS |
5603 | { |
5604 | case bp_none: | |
628fe4e4 | 5605 | break; |
c906108c SS |
5606 | case bp_breakpoint: |
5607 | case bp_hardware_breakpoint: | |
7c16b83e | 5608 | case bp_single_step: |
c906108c SS |
5609 | case bp_until: |
5610 | case bp_finish: | |
a9b3a50f | 5611 | case bp_shlib_event: |
c906108c SS |
5612 | if (bs->stop) |
5613 | { | |
5614 | if (bs->print) | |
628fe4e4 | 5615 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5616 | else |
628fe4e4 | 5617 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5618 | } |
5619 | else | |
628fe4e4 | 5620 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5621 | break; |
5622 | case bp_watchpoint: | |
5623 | case bp_hardware_watchpoint: | |
5624 | case bp_read_watchpoint: | |
5625 | case bp_access_watchpoint: | |
5626 | if (bs->stop) | |
5627 | { | |
5628 | if (bs->print) | |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5630 | else |
628fe4e4 | 5631 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5632 | } |
5633 | else | |
628fe4e4 JK |
5634 | { |
5635 | /* There was a watchpoint, but we're not stopping. | |
5636 | This requires no further action. */ | |
5637 | } | |
c906108c SS |
5638 | break; |
5639 | case bp_longjmp: | |
e2e4d78b | 5640 | case bp_longjmp_call_dummy: |
186c406b | 5641 | case bp_exception: |
0a39bb32 PA |
5642 | if (bs->stop) |
5643 | { | |
5644 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5645 | retval.is_longjmp = bptype != bp_exception; | |
5646 | } | |
5647 | else | |
5648 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5649 | break; |
5650 | case bp_longjmp_resume: | |
186c406b | 5651 | case bp_exception_resume: |
0a39bb32 PA |
5652 | if (bs->stop) |
5653 | { | |
5654 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5655 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5656 | } | |
5657 | else | |
5658 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5659 | break; |
5660 | case bp_step_resume: | |
5661 | if (bs->stop) | |
628fe4e4 JK |
5662 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5663 | else | |
c906108c | 5664 | { |
628fe4e4 JK |
5665 | /* It is for the wrong frame. */ |
5666 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5667 | } |
c906108c | 5668 | break; |
2c03e5be PA |
5669 | case bp_hp_step_resume: |
5670 | if (bs->stop) | |
5671 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5672 | else | |
5673 | { | |
5674 | /* It is for the wrong frame. */ | |
5675 | this_action = BPSTAT_WHAT_SINGLE; | |
5676 | } | |
5677 | break; | |
c906108c | 5678 | case bp_watchpoint_scope: |
c4093a6a | 5679 | case bp_thread_event: |
1900040c | 5680 | case bp_overlay_event: |
0fd8e87f | 5681 | case bp_longjmp_master: |
aa7d318d | 5682 | case bp_std_terminate_master: |
186c406b | 5683 | case bp_exception_master: |
628fe4e4 | 5684 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5685 | break; |
ce78b96d | 5686 | case bp_catchpoint: |
c5aa993b JM |
5687 | if (bs->stop) |
5688 | { | |
5689 | if (bs->print) | |
628fe4e4 | 5690 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5691 | else |
628fe4e4 | 5692 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5693 | } |
5694 | else | |
628fe4e4 JK |
5695 | { |
5696 | /* There was a catchpoint, but we're not stopping. | |
5697 | This requires no further action. */ | |
5698 | } | |
5699 | break; | |
628fe4e4 | 5700 | case bp_jit_event: |
628fe4e4 | 5701 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5702 | break; |
c906108c | 5703 | case bp_call_dummy: |
53a5351d JM |
5704 | /* Make sure the action is stop (silent or noisy), |
5705 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5706 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5707 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5708 | break; |
5709 | case bp_std_terminate: | |
5710 | /* Make sure the action is stop (silent or noisy), | |
5711 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5712 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5713 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5714 | break; |
1042e4c0 | 5715 | case bp_tracepoint: |
7a697b8d | 5716 | case bp_fast_tracepoint: |
0fb4aa4b | 5717 | case bp_static_tracepoint: |
1042e4c0 SS |
5718 | /* Tracepoint hits should not be reported back to GDB, and |
5719 | if one got through somehow, it should have been filtered | |
5720 | out already. */ | |
5721 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5722 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5723 | break; |
5724 | case bp_gnu_ifunc_resolver: | |
5725 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5726 | this_action = BPSTAT_WHAT_SINGLE; | |
5727 | break; | |
5728 | case bp_gnu_ifunc_resolver_return: | |
5729 | /* The breakpoint will be removed, execution will restart from the | |
5730 | PC of the former breakpoint. */ | |
5731 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5732 | break; | |
e7e0cddf SS |
5733 | |
5734 | case bp_dprintf: | |
a11cfd87 HZ |
5735 | if (bs->stop) |
5736 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5737 | else | |
5738 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5739 | break; |
5740 | ||
628fe4e4 JK |
5741 | default: |
5742 | internal_error (__FILE__, __LINE__, | |
5743 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5744 | } |
628fe4e4 | 5745 | |
325fac50 | 5746 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5747 | } |
628fe4e4 | 5748 | |
243a9253 PA |
5749 | return retval; |
5750 | } | |
628fe4e4 | 5751 | |
243a9253 PA |
5752 | void |
5753 | bpstat_run_callbacks (bpstat bs_head) | |
5754 | { | |
5755 | bpstat bs; | |
628fe4e4 | 5756 | |
0e30163f JK |
5757 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5758 | { | |
5759 | struct breakpoint *b = bs->breakpoint_at; | |
5760 | ||
5761 | if (b == NULL) | |
5762 | continue; | |
5763 | switch (b->type) | |
5764 | { | |
243a9253 PA |
5765 | case bp_jit_event: |
5766 | handle_jit_event (); | |
5767 | break; | |
0e30163f JK |
5768 | case bp_gnu_ifunc_resolver: |
5769 | gnu_ifunc_resolver_stop (b); | |
5770 | break; | |
5771 | case bp_gnu_ifunc_resolver_return: | |
5772 | gnu_ifunc_resolver_return_stop (b); | |
5773 | break; | |
5774 | } | |
5775 | } | |
c906108c SS |
5776 | } |
5777 | ||
5778 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5779 | without hardware support). This isn't related to a specific bpstat, | |
5780 | just to things like whether watchpoints are set. */ | |
5781 | ||
c5aa993b | 5782 | int |
fba45db2 | 5783 | bpstat_should_step (void) |
c906108c SS |
5784 | { |
5785 | struct breakpoint *b; | |
cc59ec59 | 5786 | |
c906108c | 5787 | ALL_BREAKPOINTS (b) |
717a8278 | 5788 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5789 | return 1; |
c906108c SS |
5790 | return 0; |
5791 | } | |
5792 | ||
67822962 PA |
5793 | int |
5794 | bpstat_causes_stop (bpstat bs) | |
5795 | { | |
5796 | for (; bs != NULL; bs = bs->next) | |
5797 | if (bs->stop) | |
5798 | return 1; | |
5799 | ||
5800 | return 0; | |
5801 | } | |
5802 | ||
c906108c | 5803 | \f |
c5aa993b | 5804 | |
170b53b2 UW |
5805 | /* Compute a string of spaces suitable to indent the next line |
5806 | so it starts at the position corresponding to the table column | |
5807 | named COL_NAME in the currently active table of UIOUT. */ | |
5808 | ||
5809 | static char * | |
5810 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5811 | { | |
5812 | static char wrap_indent[80]; | |
5813 | int i, total_width, width, align; | |
c5209615 | 5814 | const char *text; |
170b53b2 UW |
5815 | |
5816 | total_width = 0; | |
112e8700 | 5817 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5818 | { |
5819 | if (strcmp (text, col_name) == 0) | |
5820 | { | |
5821 | gdb_assert (total_width < sizeof wrap_indent); | |
5822 | memset (wrap_indent, ' ', total_width); | |
5823 | wrap_indent[total_width] = 0; | |
5824 | ||
5825 | return wrap_indent; | |
5826 | } | |
5827 | ||
5828 | total_width += width + 1; | |
5829 | } | |
5830 | ||
5831 | return NULL; | |
5832 | } | |
5833 | ||
b775012e LM |
5834 | /* Determine if the locations of this breakpoint will have their conditions |
5835 | evaluated by the target, host or a mix of both. Returns the following: | |
5836 | ||
5837 | "host": Host evals condition. | |
5838 | "host or target": Host or Target evals condition. | |
5839 | "target": Target evals condition. | |
5840 | */ | |
5841 | ||
5842 | static const char * | |
5843 | bp_condition_evaluator (struct breakpoint *b) | |
5844 | { | |
5845 | struct bp_location *bl; | |
5846 | char host_evals = 0; | |
5847 | char target_evals = 0; | |
5848 | ||
5849 | if (!b) | |
5850 | return NULL; | |
5851 | ||
5852 | if (!is_breakpoint (b)) | |
5853 | return NULL; | |
5854 | ||
5855 | if (gdb_evaluates_breakpoint_condition_p () | |
5856 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5857 | return condition_evaluation_host; | |
5858 | ||
5859 | for (bl = b->loc; bl; bl = bl->next) | |
5860 | { | |
5861 | if (bl->cond_bytecode) | |
5862 | target_evals++; | |
5863 | else | |
5864 | host_evals++; | |
5865 | } | |
5866 | ||
5867 | if (host_evals && target_evals) | |
5868 | return condition_evaluation_both; | |
5869 | else if (target_evals) | |
5870 | return condition_evaluation_target; | |
5871 | else | |
5872 | return condition_evaluation_host; | |
5873 | } | |
5874 | ||
5875 | /* Determine the breakpoint location's condition evaluator. This is | |
5876 | similar to bp_condition_evaluator, but for locations. */ | |
5877 | ||
5878 | static const char * | |
5879 | bp_location_condition_evaluator (struct bp_location *bl) | |
5880 | { | |
5881 | if (bl && !is_breakpoint (bl->owner)) | |
5882 | return NULL; | |
5883 | ||
5884 | if (gdb_evaluates_breakpoint_condition_p () | |
5885 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5886 | return condition_evaluation_host; | |
5887 | ||
5888 | if (bl && bl->cond_bytecode) | |
5889 | return condition_evaluation_target; | |
5890 | else | |
5891 | return condition_evaluation_host; | |
5892 | } | |
5893 | ||
859825b8 JK |
5894 | /* Print the LOC location out of the list of B->LOC locations. */ |
5895 | ||
170b53b2 UW |
5896 | static void |
5897 | print_breakpoint_location (struct breakpoint *b, | |
5898 | struct bp_location *loc) | |
0d381245 | 5899 | { |
79a45e25 | 5900 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5901 | |
5902 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5903 | |
859825b8 JK |
5904 | if (loc != NULL && loc->shlib_disabled) |
5905 | loc = NULL; | |
5906 | ||
6c95b8df PA |
5907 | if (loc != NULL) |
5908 | set_current_program_space (loc->pspace); | |
5909 | ||
56435ebe | 5910 | if (b->display_canonical) |
d28cd78a | 5911 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5912 | else if (loc && loc->symtab) |
0d381245 | 5913 | { |
4a27f119 KS |
5914 | const struct symbol *sym = loc->symbol; |
5915 | ||
5916 | if (sym == NULL) | |
5917 | sym = find_pc_sect_function (loc->address, loc->section); | |
5918 | ||
0d381245 VP |
5919 | if (sym) |
5920 | { | |
112e8700 SM |
5921 | uiout->text ("in "); |
5922 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5923 | uiout->text (" "); | |
5924 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5925 | uiout->text ("at "); | |
0d381245 | 5926 | } |
112e8700 | 5927 | uiout->field_string ("file", |
05cba821 | 5928 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5929 | uiout->text (":"); |
05cba821 | 5930 | |
112e8700 SM |
5931 | if (uiout->is_mi_like_p ()) |
5932 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5933 | |
112e8700 | 5934 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5935 | } |
859825b8 | 5936 | else if (loc) |
0d381245 | 5937 | { |
d7e74731 | 5938 | string_file stb; |
170b53b2 | 5939 | |
d7e74731 | 5940 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5941 | demangle, ""); |
112e8700 | 5942 | uiout->field_stream ("at", stb); |
0d381245 | 5943 | } |
859825b8 | 5944 | else |
f00aae0f | 5945 | { |
d28cd78a TT |
5946 | uiout->field_string ("pending", |
5947 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5948 | /* If extra_string is available, it could be holding a condition |
5949 | or dprintf arguments. In either case, make sure it is printed, | |
5950 | too, but only for non-MI streams. */ | |
112e8700 | 5951 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5952 | { |
5953 | if (b->type == bp_dprintf) | |
112e8700 | 5954 | uiout->text (","); |
f00aae0f | 5955 | else |
112e8700 SM |
5956 | uiout->text (" "); |
5957 | uiout->text (b->extra_string); | |
f00aae0f KS |
5958 | } |
5959 | } | |
6c95b8df | 5960 | |
b775012e LM |
5961 | if (loc && is_breakpoint (b) |
5962 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5963 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5964 | { | |
112e8700 SM |
5965 | uiout->text (" ("); |
5966 | uiout->field_string ("evaluated-by", | |
b775012e | 5967 | bp_location_condition_evaluator (loc)); |
112e8700 | 5968 | uiout->text (")"); |
b775012e | 5969 | } |
0d381245 VP |
5970 | } |
5971 | ||
269b11a2 PA |
5972 | static const char * |
5973 | bptype_string (enum bptype type) | |
c906108c | 5974 | { |
c4093a6a JM |
5975 | struct ep_type_description |
5976 | { | |
5977 | enum bptype type; | |
a121b7c1 | 5978 | const char *description; |
c4093a6a JM |
5979 | }; |
5980 | static struct ep_type_description bptypes[] = | |
c906108c | 5981 | { |
c5aa993b JM |
5982 | {bp_none, "?deleted?"}, |
5983 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5984 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5985 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5986 | {bp_until, "until"}, |
5987 | {bp_finish, "finish"}, | |
5988 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5989 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5990 | {bp_read_watchpoint, "read watchpoint"}, |
5991 | {bp_access_watchpoint, "acc watchpoint"}, | |
5992 | {bp_longjmp, "longjmp"}, | |
5993 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5994 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5995 | {bp_exception, "exception"}, |
5996 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5997 | {bp_step_resume, "step resume"}, |
2c03e5be | 5998 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5999 | {bp_watchpoint_scope, "watchpoint scope"}, |
6000 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6001 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6002 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6003 | {bp_thread_event, "thread events"}, |
1900040c | 6004 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6005 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6006 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6007 | {bp_exception_master, "exception master"}, |
ce78b96d | 6008 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6009 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6010 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6011 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6012 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6013 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6014 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6015 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6016 | }; |
269b11a2 PA |
6017 | |
6018 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6019 | || ((int) type != bptypes[(int) type].type)) | |
6020 | internal_error (__FILE__, __LINE__, | |
6021 | _("bptypes table does not describe type #%d."), | |
6022 | (int) type); | |
6023 | ||
6024 | return bptypes[(int) type].description; | |
6025 | } | |
6026 | ||
998580f1 MK |
6027 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6028 | For CLI, prefix the list with the string 'inf'. */ | |
6029 | ||
6030 | static void | |
6031 | output_thread_groups (struct ui_out *uiout, | |
6032 | const char *field_name, | |
6033 | VEC(int) *inf_num, | |
6034 | int mi_only) | |
6035 | { | |
112e8700 | 6036 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6037 | int inf; |
6038 | int i; | |
6039 | ||
6040 | /* For backward compatibility, don't display inferiors in CLI unless | |
6041 | there are several. Always display them for MI. */ | |
6042 | if (!is_mi && mi_only) | |
6043 | return; | |
6044 | ||
10f489e5 | 6045 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6046 | |
998580f1 MK |
6047 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6048 | { | |
6049 | if (is_mi) | |
6050 | { | |
6051 | char mi_group[10]; | |
6052 | ||
6053 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
112e8700 | 6054 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6055 | } |
6056 | else | |
6057 | { | |
6058 | if (i == 0) | |
112e8700 | 6059 | uiout->text (" inf "); |
998580f1 | 6060 | else |
112e8700 | 6061 | uiout->text (", "); |
998580f1 | 6062 | |
112e8700 | 6063 | uiout->text (plongest (inf)); |
998580f1 MK |
6064 | } |
6065 | } | |
998580f1 MK |
6066 | } |
6067 | ||
269b11a2 PA |
6068 | /* Print B to gdb_stdout. */ |
6069 | ||
6070 | static void | |
6071 | print_one_breakpoint_location (struct breakpoint *b, | |
6072 | struct bp_location *loc, | |
6073 | int loc_number, | |
6074 | struct bp_location **last_loc, | |
269b11a2 PA |
6075 | int allflag) |
6076 | { | |
6077 | struct command_line *l; | |
c2c6d25f | 6078 | static char bpenables[] = "nynny"; |
c906108c | 6079 | |
79a45e25 | 6080 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6081 | int header_of_multiple = 0; |
6082 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6083 | struct value_print_options opts; |
6084 | ||
6085 | get_user_print_options (&opts); | |
0d381245 VP |
6086 | |
6087 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6088 | /* See comment in print_one_breakpoint concerning treatment of |
6089 | breakpoints with single disabled location. */ | |
0d381245 VP |
6090 | if (loc == NULL |
6091 | && (b->loc != NULL | |
6092 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6093 | header_of_multiple = 1; | |
6094 | if (loc == NULL) | |
6095 | loc = b->loc; | |
6096 | ||
c4093a6a JM |
6097 | annotate_record (); |
6098 | ||
6099 | /* 1 */ | |
6100 | annotate_field (0); | |
0d381245 VP |
6101 | if (part_of_multiple) |
6102 | { | |
6103 | char *formatted; | |
0c6773c1 | 6104 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6105 | uiout->field_string ("number", formatted); |
0d381245 VP |
6106 | xfree (formatted); |
6107 | } | |
6108 | else | |
6109 | { | |
112e8700 | 6110 | uiout->field_int ("number", b->number); |
0d381245 | 6111 | } |
c4093a6a JM |
6112 | |
6113 | /* 2 */ | |
6114 | annotate_field (1); | |
0d381245 | 6115 | if (part_of_multiple) |
112e8700 | 6116 | uiout->field_skip ("type"); |
269b11a2 | 6117 | else |
112e8700 | 6118 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6119 | |
6120 | /* 3 */ | |
6121 | annotate_field (2); | |
0d381245 | 6122 | if (part_of_multiple) |
112e8700 | 6123 | uiout->field_skip ("disp"); |
0d381245 | 6124 | else |
112e8700 | 6125 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6126 | |
c4093a6a JM |
6127 | |
6128 | /* 4 */ | |
6129 | annotate_field (3); | |
0d381245 | 6130 | if (part_of_multiple) |
112e8700 | 6131 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6132 | else |
112e8700 SM |
6133 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6134 | uiout->spaces (2); | |
0d381245 | 6135 | |
c4093a6a JM |
6136 | |
6137 | /* 5 and 6 */ | |
3086aeae | 6138 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6139 | { |
4a64f543 MS |
6140 | /* Although the print_one can possibly print all locations, |
6141 | calling it here is not likely to get any nice result. So, | |
6142 | make sure there's just one location. */ | |
0d381245 | 6143 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6144 | b->ops->print_one (b, last_loc); |
0d381245 | 6145 | } |
3086aeae DJ |
6146 | else |
6147 | switch (b->type) | |
6148 | { | |
6149 | case bp_none: | |
6150 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6151 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6152 | break; |
c906108c | 6153 | |
3086aeae DJ |
6154 | case bp_watchpoint: |
6155 | case bp_hardware_watchpoint: | |
6156 | case bp_read_watchpoint: | |
6157 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6158 | { |
6159 | struct watchpoint *w = (struct watchpoint *) b; | |
6160 | ||
6161 | /* Field 4, the address, is omitted (which makes the columns | |
6162 | not line up too nicely with the headers, but the effect | |
6163 | is relatively readable). */ | |
6164 | if (opts.addressprint) | |
112e8700 | 6165 | uiout->field_skip ("addr"); |
3a5c3e22 | 6166 | annotate_field (5); |
112e8700 | 6167 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6168 | } |
3086aeae DJ |
6169 | break; |
6170 | ||
3086aeae DJ |
6171 | case bp_breakpoint: |
6172 | case bp_hardware_breakpoint: | |
7c16b83e | 6173 | case bp_single_step: |
3086aeae DJ |
6174 | case bp_until: |
6175 | case bp_finish: | |
6176 | case bp_longjmp: | |
6177 | case bp_longjmp_resume: | |
e2e4d78b | 6178 | case bp_longjmp_call_dummy: |
186c406b TT |
6179 | case bp_exception: |
6180 | case bp_exception_resume: | |
3086aeae | 6181 | case bp_step_resume: |
2c03e5be | 6182 | case bp_hp_step_resume: |
3086aeae DJ |
6183 | case bp_watchpoint_scope: |
6184 | case bp_call_dummy: | |
aa7d318d | 6185 | case bp_std_terminate: |
3086aeae DJ |
6186 | case bp_shlib_event: |
6187 | case bp_thread_event: | |
6188 | case bp_overlay_event: | |
0fd8e87f | 6189 | case bp_longjmp_master: |
aa7d318d | 6190 | case bp_std_terminate_master: |
186c406b | 6191 | case bp_exception_master: |
1042e4c0 | 6192 | case bp_tracepoint: |
7a697b8d | 6193 | case bp_fast_tracepoint: |
0fb4aa4b | 6194 | case bp_static_tracepoint: |
e7e0cddf | 6195 | case bp_dprintf: |
4efc6507 | 6196 | case bp_jit_event: |
0e30163f JK |
6197 | case bp_gnu_ifunc_resolver: |
6198 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6199 | if (opts.addressprint) |
3086aeae DJ |
6200 | { |
6201 | annotate_field (4); | |
54e52265 | 6202 | if (header_of_multiple) |
112e8700 | 6203 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6204 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6205 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6206 | else |
112e8700 | 6207 | uiout->field_core_addr ("addr", |
5af949e3 | 6208 | loc->gdbarch, loc->address); |
3086aeae DJ |
6209 | } |
6210 | annotate_field (5); | |
0d381245 | 6211 | if (!header_of_multiple) |
170b53b2 | 6212 | print_breakpoint_location (b, loc); |
0d381245 | 6213 | if (b->loc) |
a6d9a66e | 6214 | *last_loc = b->loc; |
3086aeae DJ |
6215 | break; |
6216 | } | |
c906108c | 6217 | |
6c95b8df | 6218 | |
998580f1 | 6219 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6220 | { |
6221 | struct inferior *inf; | |
998580f1 MK |
6222 | VEC(int) *inf_num = NULL; |
6223 | int mi_only = 1; | |
6c95b8df | 6224 | |
998580f1 | 6225 | ALL_INFERIORS (inf) |
6c95b8df PA |
6226 | { |
6227 | if (inf->pspace == loc->pspace) | |
998580f1 | 6228 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6229 | } |
998580f1 MK |
6230 | |
6231 | /* For backward compatibility, don't display inferiors in CLI unless | |
6232 | there are several. Always display for MI. */ | |
6233 | if (allflag | |
6234 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6235 | && (number_of_program_spaces () > 1 | |
6236 | || number_of_inferiors () > 1) | |
6237 | /* LOC is for existing B, it cannot be in | |
6238 | moribund_locations and thus having NULL OWNER. */ | |
6239 | && loc->owner->type != bp_catchpoint)) | |
6240 | mi_only = 0; | |
6241 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6242 | VEC_free (int, inf_num); | |
6c95b8df PA |
6243 | } |
6244 | ||
4a306c9a | 6245 | if (!part_of_multiple) |
c4093a6a | 6246 | { |
4a306c9a JB |
6247 | if (b->thread != -1) |
6248 | { | |
6249 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6250 | "stop only in" line a little further down. */ |
112e8700 SM |
6251 | uiout->text (" thread "); |
6252 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6253 | } |
6254 | else if (b->task != 0) | |
6255 | { | |
112e8700 SM |
6256 | uiout->text (" task "); |
6257 | uiout->field_int ("task", b->task); | |
4a306c9a | 6258 | } |
c4093a6a | 6259 | } |
f1310107 | 6260 | |
112e8700 | 6261 | uiout->text ("\n"); |
f1310107 | 6262 | |
348d480f | 6263 | if (!part_of_multiple) |
f1310107 TJB |
6264 | b->ops->print_one_detail (b, uiout); |
6265 | ||
0d381245 | 6266 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6267 | { |
6268 | annotate_field (6); | |
112e8700 | 6269 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6270 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6271 | the frame ID. */ |
112e8700 | 6272 | uiout->field_core_addr ("frame", |
5af949e3 | 6273 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6274 | uiout->text ("\n"); |
c4093a6a JM |
6275 | } |
6276 | ||
28010a5d | 6277 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6278 | { |
6279 | annotate_field (7); | |
d77f58be | 6280 | if (is_tracepoint (b)) |
112e8700 | 6281 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6282 | else |
112e8700 SM |
6283 | uiout->text ("\tstop only if "); |
6284 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6285 | |
6286 | /* Print whether the target is doing the breakpoint's condition | |
6287 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6288 | if (is_breakpoint (b) | |
6289 | && breakpoint_condition_evaluation_mode () | |
6290 | == condition_evaluation_target) | |
6291 | { | |
112e8700 SM |
6292 | uiout->text (" ("); |
6293 | uiout->field_string ("evaluated-by", | |
b775012e | 6294 | bp_condition_evaluator (b)); |
112e8700 | 6295 | uiout->text (" evals)"); |
b775012e | 6296 | } |
112e8700 | 6297 | uiout->text ("\n"); |
0101ce28 JJ |
6298 | } |
6299 | ||
0d381245 | 6300 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6301 | { |
4a64f543 | 6302 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6303 | uiout->text ("\tstop only in thread "); |
6304 | if (uiout->is_mi_like_p ()) | |
6305 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6306 | else |
6307 | { | |
6308 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6309 | ||
112e8700 | 6310 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6311 | } |
112e8700 | 6312 | uiout->text ("\n"); |
c4093a6a JM |
6313 | } |
6314 | ||
556ec64d YQ |
6315 | if (!part_of_multiple) |
6316 | { | |
6317 | if (b->hit_count) | |
31f56a27 YQ |
6318 | { |
6319 | /* FIXME should make an annotation for this. */ | |
6320 | if (is_catchpoint (b)) | |
112e8700 | 6321 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6322 | else if (is_tracepoint (b)) |
112e8700 | 6323 | uiout->text ("\ttracepoint"); |
31f56a27 | 6324 | else |
112e8700 SM |
6325 | uiout->text ("\tbreakpoint"); |
6326 | uiout->text (" already hit "); | |
6327 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6328 | if (b->hit_count == 1) |
112e8700 | 6329 | uiout->text (" time\n"); |
31f56a27 | 6330 | else |
112e8700 | 6331 | uiout->text (" times\n"); |
31f56a27 | 6332 | } |
556ec64d YQ |
6333 | else |
6334 | { | |
31f56a27 | 6335 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6336 | if (uiout->is_mi_like_p ()) |
6337 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6338 | } |
6339 | } | |
8b93c638 | 6340 | |
0d381245 | 6341 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6342 | { |
6343 | annotate_field (8); | |
112e8700 SM |
6344 | uiout->text ("\tignore next "); |
6345 | uiout->field_int ("ignore", b->ignore_count); | |
6346 | uiout->text (" hits\n"); | |
c4093a6a | 6347 | } |
059fb39f | 6348 | |
816338b5 SS |
6349 | /* Note that an enable count of 1 corresponds to "enable once" |
6350 | behavior, which is reported by the combination of enablement and | |
6351 | disposition, so we don't need to mention it here. */ | |
6352 | if (!part_of_multiple && b->enable_count > 1) | |
6353 | { | |
6354 | annotate_field (8); | |
112e8700 | 6355 | uiout->text ("\tdisable after "); |
816338b5 SS |
6356 | /* Tweak the wording to clarify that ignore and enable counts |
6357 | are distinct, and have additive effect. */ | |
6358 | if (b->ignore_count) | |
112e8700 | 6359 | uiout->text ("additional "); |
816338b5 | 6360 | else |
112e8700 SM |
6361 | uiout->text ("next "); |
6362 | uiout->field_int ("enable", b->enable_count); | |
6363 | uiout->text (" hits\n"); | |
816338b5 SS |
6364 | } |
6365 | ||
f196051f SS |
6366 | if (!part_of_multiple && is_tracepoint (b)) |
6367 | { | |
6368 | struct tracepoint *tp = (struct tracepoint *) b; | |
6369 | ||
6370 | if (tp->traceframe_usage) | |
6371 | { | |
112e8700 SM |
6372 | uiout->text ("\ttrace buffer usage "); |
6373 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6374 | uiout->text (" bytes\n"); | |
f196051f SS |
6375 | } |
6376 | } | |
d3ce09f5 | 6377 | |
d1b0a7bf | 6378 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6379 | if (!part_of_multiple && l) |
c4093a6a JM |
6380 | { |
6381 | annotate_field (9); | |
2e783024 | 6382 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6383 | print_command_lines (uiout, l, 4); |
c4093a6a | 6384 | } |
d24317b4 | 6385 | |
d9b3f62e | 6386 | if (is_tracepoint (b)) |
1042e4c0 | 6387 | { |
d9b3f62e PA |
6388 | struct tracepoint *t = (struct tracepoint *) b; |
6389 | ||
6390 | if (!part_of_multiple && t->pass_count) | |
6391 | { | |
6392 | annotate_field (10); | |
112e8700 SM |
6393 | uiout->text ("\tpass count "); |
6394 | uiout->field_int ("pass", t->pass_count); | |
6395 | uiout->text (" \n"); | |
d9b3f62e | 6396 | } |
f2a8bc8a YQ |
6397 | |
6398 | /* Don't display it when tracepoint or tracepoint location is | |
6399 | pending. */ | |
6400 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6401 | { | |
6402 | annotate_field (11); | |
6403 | ||
112e8700 SM |
6404 | if (uiout->is_mi_like_p ()) |
6405 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6406 | loc->inserted ? "y" : "n"); |
6407 | else | |
6408 | { | |
6409 | if (loc->inserted) | |
112e8700 | 6410 | uiout->text ("\t"); |
f2a8bc8a | 6411 | else |
112e8700 SM |
6412 | uiout->text ("\tnot "); |
6413 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6414 | } |
6415 | } | |
1042e4c0 SS |
6416 | } |
6417 | ||
112e8700 | 6418 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6419 | { |
3a5c3e22 PA |
6420 | if (is_watchpoint (b)) |
6421 | { | |
6422 | struct watchpoint *w = (struct watchpoint *) b; | |
6423 | ||
112e8700 | 6424 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6425 | } |
f00aae0f | 6426 | else if (b->location != NULL |
d28cd78a | 6427 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6428 | uiout->field_string ("original-location", |
d28cd78a | 6429 | event_location_to_string (b->location.get ())); |
d24317b4 | 6430 | } |
c4093a6a | 6431 | } |
c5aa993b | 6432 | |
0d381245 VP |
6433 | static void |
6434 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6435 | struct bp_location **last_loc, |
6c95b8df | 6436 | int allflag) |
0d381245 | 6437 | { |
79a45e25 | 6438 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6439 | |
2e783024 TT |
6440 | { |
6441 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6442 | |
2e783024 TT |
6443 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6444 | } | |
0d381245 VP |
6445 | |
6446 | /* If this breakpoint has custom print function, | |
6447 | it's already printed. Otherwise, print individual | |
6448 | locations, if any. */ | |
6449 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6450 | { | |
4a64f543 MS |
6451 | /* If breakpoint has a single location that is disabled, we |
6452 | print it as if it had several locations, since otherwise it's | |
6453 | hard to represent "breakpoint enabled, location disabled" | |
6454 | situation. | |
6455 | ||
6456 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6457 | internally, that's not a property exposed to user. */ |
0d381245 | 6458 | if (b->loc |
a5606eee | 6459 | && !is_hardware_watchpoint (b) |
8d3788bd | 6460 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6461 | { |
6462 | struct bp_location *loc; | |
6463 | int n = 1; | |
8d3788bd | 6464 | |
0d381245 | 6465 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6466 | { |
2e783024 | 6467 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6468 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6469 | } |
0d381245 VP |
6470 | } |
6471 | } | |
6472 | } | |
6473 | ||
a6d9a66e UW |
6474 | static int |
6475 | breakpoint_address_bits (struct breakpoint *b) | |
6476 | { | |
6477 | int print_address_bits = 0; | |
6478 | struct bp_location *loc; | |
6479 | ||
c6d81124 PA |
6480 | /* Software watchpoints that aren't watching memory don't have an |
6481 | address to print. */ | |
6482 | if (is_no_memory_software_watchpoint (b)) | |
6483 | return 0; | |
6484 | ||
a6d9a66e UW |
6485 | for (loc = b->loc; loc; loc = loc->next) |
6486 | { | |
c7437ca6 PA |
6487 | int addr_bit; |
6488 | ||
c7437ca6 | 6489 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6490 | if (addr_bit > print_address_bits) |
6491 | print_address_bits = addr_bit; | |
6492 | } | |
6493 | ||
6494 | return print_address_bits; | |
6495 | } | |
0d381245 | 6496 | |
65630365 | 6497 | /* See breakpoint.h. */ |
c5aa993b | 6498 | |
65630365 PA |
6499 | void |
6500 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6501 | { |
a6d9a66e | 6502 | struct bp_location *dummy_loc = NULL; |
65630365 | 6503 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6504 | } |
c5aa993b | 6505 | |
09d682a4 TT |
6506 | /* Return true if this breakpoint was set by the user, false if it is |
6507 | internal or momentary. */ | |
6508 | ||
6509 | int | |
6510 | user_breakpoint_p (struct breakpoint *b) | |
6511 | { | |
46c6471b | 6512 | return b->number > 0; |
09d682a4 TT |
6513 | } |
6514 | ||
93daf339 TT |
6515 | /* See breakpoint.h. */ |
6516 | ||
6517 | int | |
6518 | pending_breakpoint_p (struct breakpoint *b) | |
6519 | { | |
6520 | return b->loc == NULL; | |
6521 | } | |
6522 | ||
7f3b0473 | 6523 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6524 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6525 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6526 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6527 | ones for which it returns non-zero. Return the total number of | |
6528 | breakpoints listed. */ | |
c906108c | 6529 | |
d77f58be | 6530 | static int |
4495129a | 6531 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6532 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6533 | { |
52f0bd74 | 6534 | struct breakpoint *b; |
a6d9a66e | 6535 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6536 | int nr_printable_breakpoints; |
79a45b7d | 6537 | struct value_print_options opts; |
a6d9a66e | 6538 | int print_address_bits = 0; |
269b11a2 | 6539 | int print_type_col_width = 14; |
79a45e25 | 6540 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6541 | |
79a45b7d TT |
6542 | get_user_print_options (&opts); |
6543 | ||
4a64f543 MS |
6544 | /* Compute the number of rows in the table, as well as the size |
6545 | required for address fields. */ | |
7f3b0473 AC |
6546 | nr_printable_breakpoints = 0; |
6547 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6548 | { |
6549 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6550 | if (filter && !filter (b)) | |
6551 | continue; | |
6552 | ||
6553 | /* If we have an "args" string, it is a list of breakpoints to | |
6554 | accept. Skip the others. */ | |
6555 | if (args != NULL && *args != '\0') | |
6556 | { | |
6557 | if (allflag && parse_and_eval_long (args) != b->number) | |
6558 | continue; | |
6559 | if (!allflag && !number_is_in_list (args, b->number)) | |
6560 | continue; | |
6561 | } | |
269b11a2 | 6562 | |
e5a67952 MS |
6563 | if (allflag || user_breakpoint_p (b)) |
6564 | { | |
6565 | int addr_bit, type_len; | |
a6d9a66e | 6566 | |
e5a67952 MS |
6567 | addr_bit = breakpoint_address_bits (b); |
6568 | if (addr_bit > print_address_bits) | |
6569 | print_address_bits = addr_bit; | |
269b11a2 | 6570 | |
e5a67952 MS |
6571 | type_len = strlen (bptype_string (b->type)); |
6572 | if (type_len > print_type_col_width) | |
6573 | print_type_col_width = type_len; | |
6574 | ||
6575 | nr_printable_breakpoints++; | |
6576 | } | |
6577 | } | |
7f3b0473 | 6578 | |
4a2b031d TT |
6579 | { |
6580 | ui_out_emit_table table_emitter (uiout, | |
6581 | opts.addressprint ? 6 : 5, | |
6582 | nr_printable_breakpoints, | |
6583 | "BreakpointTable"); | |
6584 | ||
6585 | if (nr_printable_breakpoints > 0) | |
6586 | annotate_breakpoints_headers (); | |
6587 | if (nr_printable_breakpoints > 0) | |
6588 | annotate_field (0); | |
6589 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6590 | if (nr_printable_breakpoints > 0) | |
6591 | annotate_field (1); | |
6592 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6593 | if (nr_printable_breakpoints > 0) | |
6594 | annotate_field (2); | |
6595 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6596 | if (nr_printable_breakpoints > 0) | |
6597 | annotate_field (3); | |
6598 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6599 | if (opts.addressprint) | |
6600 | { | |
6601 | if (nr_printable_breakpoints > 0) | |
6602 | annotate_field (4); | |
6603 | if (print_address_bits <= 32) | |
6604 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6605 | else | |
6606 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6607 | } | |
6608 | if (nr_printable_breakpoints > 0) | |
6609 | annotate_field (5); | |
6610 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6611 | uiout->table_body (); | |
6612 | if (nr_printable_breakpoints > 0) | |
6613 | annotate_breakpoints_table (); | |
6614 | ||
6615 | ALL_BREAKPOINTS (b) | |
6616 | { | |
6617 | QUIT; | |
6618 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6619 | if (filter && !filter (b)) | |
6620 | continue; | |
e5a67952 | 6621 | |
4a2b031d TT |
6622 | /* If we have an "args" string, it is a list of breakpoints to |
6623 | accept. Skip the others. */ | |
e5a67952 | 6624 | |
4a2b031d TT |
6625 | if (args != NULL && *args != '\0') |
6626 | { | |
6627 | if (allflag) /* maintenance info breakpoint */ | |
6628 | { | |
6629 | if (parse_and_eval_long (args) != b->number) | |
6630 | continue; | |
6631 | } | |
6632 | else /* all others */ | |
6633 | { | |
6634 | if (!number_is_in_list (args, b->number)) | |
6635 | continue; | |
6636 | } | |
6637 | } | |
6638 | /* We only print out user settable breakpoints unless the | |
6639 | allflag is set. */ | |
6640 | if (allflag || user_breakpoint_p (b)) | |
6641 | print_one_breakpoint (b, &last_loc, allflag); | |
6642 | } | |
6643 | } | |
698384cd | 6644 | |
7f3b0473 | 6645 | if (nr_printable_breakpoints == 0) |
c906108c | 6646 | { |
4a64f543 MS |
6647 | /* If there's a filter, let the caller decide how to report |
6648 | empty list. */ | |
d77f58be SS |
6649 | if (!filter) |
6650 | { | |
e5a67952 | 6651 | if (args == NULL || *args == '\0') |
112e8700 | 6652 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6653 | else |
112e8700 | 6654 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6655 | args); |
d77f58be | 6656 | } |
c906108c SS |
6657 | } |
6658 | else | |
c4093a6a | 6659 | { |
a6d9a66e UW |
6660 | if (last_loc && !server_command) |
6661 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6662 | } |
c906108c | 6663 | |
4a64f543 | 6664 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6665 | there have been breakpoints? */ |
c906108c | 6666 | annotate_breakpoints_table_end (); |
d77f58be SS |
6667 | |
6668 | return nr_printable_breakpoints; | |
c906108c SS |
6669 | } |
6670 | ||
ad443146 SS |
6671 | /* Display the value of default-collect in a way that is generally |
6672 | compatible with the breakpoint list. */ | |
6673 | ||
6674 | static void | |
6675 | default_collect_info (void) | |
6676 | { | |
79a45e25 PA |
6677 | struct ui_out *uiout = current_uiout; |
6678 | ||
ad443146 SS |
6679 | /* If it has no value (which is frequently the case), say nothing; a |
6680 | message like "No default-collect." gets in user's face when it's | |
6681 | not wanted. */ | |
6682 | if (!*default_collect) | |
6683 | return; | |
6684 | ||
6685 | /* The following phrase lines up nicely with per-tracepoint collect | |
6686 | actions. */ | |
112e8700 SM |
6687 | uiout->text ("default collect "); |
6688 | uiout->field_string ("default-collect", default_collect); | |
6689 | uiout->text (" \n"); | |
ad443146 SS |
6690 | } |
6691 | ||
c906108c | 6692 | static void |
0b39b52e | 6693 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6694 | { |
e5a67952 | 6695 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6696 | |
6697 | default_collect_info (); | |
d77f58be SS |
6698 | } |
6699 | ||
6700 | static void | |
1d12d88f | 6701 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6702 | { |
e5a67952 | 6703 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6704 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6705 | |
6706 | if (num_printed == 0) | |
6707 | { | |
e5a67952 | 6708 | if (args == NULL || *args == '\0') |
112e8700 | 6709 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6710 | else |
112e8700 | 6711 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6712 | } |
c906108c SS |
6713 | } |
6714 | ||
7a292a7a | 6715 | static void |
4495129a | 6716 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6717 | { |
e5a67952 | 6718 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6719 | |
6720 | default_collect_info (); | |
c906108c SS |
6721 | } |
6722 | ||
0d381245 | 6723 | static int |
714835d5 | 6724 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6725 | struct program_space *pspace, |
714835d5 | 6726 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6727 | { |
6728 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6729 | |
0d381245 VP |
6730 | for (; bl; bl = bl->next) |
6731 | { | |
6c95b8df PA |
6732 | if (bl->pspace == pspace |
6733 | && bl->address == pc | |
0d381245 VP |
6734 | && (!overlay_debugging || bl->section == section)) |
6735 | return 1; | |
6736 | } | |
6737 | return 0; | |
6738 | } | |
6739 | ||
672f9b60 | 6740 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6741 | concerns with logical breakpoints, so we match program spaces, not |
6742 | address spaces. */ | |
c906108c SS |
6743 | |
6744 | static void | |
6c95b8df PA |
6745 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6746 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6747 | struct obj_section *section, int thread) |
c906108c | 6748 | { |
52f0bd74 AC |
6749 | int others = 0; |
6750 | struct breakpoint *b; | |
c906108c SS |
6751 | |
6752 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6753 | others += (user_breakpoint_p (b) |
6754 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6755 | if (others > 0) |
6756 | { | |
a3f17187 AC |
6757 | if (others == 1) |
6758 | printf_filtered (_("Note: breakpoint ")); | |
6759 | else /* if (others == ???) */ | |
6760 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6761 | ALL_BREAKPOINTS (b) |
672f9b60 | 6762 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6763 | { |
6764 | others--; | |
6765 | printf_filtered ("%d", b->number); | |
6766 | if (b->thread == -1 && thread != -1) | |
6767 | printf_filtered (" (all threads)"); | |
6768 | else if (b->thread != -1) | |
6769 | printf_filtered (" (thread %d)", b->thread); | |
6770 | printf_filtered ("%s%s ", | |
059fb39f | 6771 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6772 | || b->enable_state == bp_call_disabled) |
0d381245 | 6773 | ? " (disabled)" |
0d381245 VP |
6774 | : ""), |
6775 | (others > 1) ? "," | |
6776 | : ((others == 1) ? " and" : "")); | |
6777 | } | |
a3f17187 | 6778 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6779 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6780 | printf_filtered (".\n"); |
6781 | } | |
6782 | } | |
6783 | \f | |
c906108c | 6784 | |
e4f237da | 6785 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6786 | BPT locations. For some breakpoint types, the locations' address members |
6787 | are irrelevant and it makes no sense to attempt to compare them to other | |
6788 | addresses (or use them for any other purpose either). | |
e4f237da | 6789 | |
4a64f543 | 6790 | More specifically, each of the following breakpoint types will |
244558af | 6791 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6792 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6793 | breakpoint location at address zero: |
e4f237da KB |
6794 | |
6795 | bp_watchpoint | |
2d134ed3 PA |
6796 | bp_catchpoint |
6797 | ||
6798 | */ | |
e4f237da KB |
6799 | |
6800 | static int | |
6801 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6802 | { | |
6803 | enum bptype type = bpt->type; | |
6804 | ||
2d134ed3 PA |
6805 | return (type != bp_watchpoint && type != bp_catchpoint); |
6806 | } | |
6807 | ||
6808 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6809 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6810 | ||
6811 | static int | |
4a64f543 MS |
6812 | watchpoint_locations_match (struct bp_location *loc1, |
6813 | struct bp_location *loc2) | |
2d134ed3 | 6814 | { |
3a5c3e22 PA |
6815 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6816 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6817 | ||
6818 | /* Both of them must exist. */ | |
6819 | gdb_assert (w1 != NULL); | |
6820 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6821 | |
4a64f543 MS |
6822 | /* If the target can evaluate the condition expression in hardware, |
6823 | then we we need to insert both watchpoints even if they are at | |
6824 | the same place. Otherwise the watchpoint will only trigger when | |
6825 | the condition of whichever watchpoint was inserted evaluates to | |
6826 | true, not giving a chance for GDB to check the condition of the | |
6827 | other watchpoint. */ | |
3a5c3e22 | 6828 | if ((w1->cond_exp |
4a64f543 MS |
6829 | && target_can_accel_watchpoint_condition (loc1->address, |
6830 | loc1->length, | |
0cf6dd15 | 6831 | loc1->watchpoint_type, |
4d01a485 | 6832 | w1->cond_exp.get ())) |
3a5c3e22 | 6833 | || (w2->cond_exp |
4a64f543 MS |
6834 | && target_can_accel_watchpoint_condition (loc2->address, |
6835 | loc2->length, | |
0cf6dd15 | 6836 | loc2->watchpoint_type, |
4d01a485 | 6837 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6838 | return 0; |
6839 | ||
85d721b8 PA |
6840 | /* Note that this checks the owner's type, not the location's. In |
6841 | case the target does not support read watchpoints, but does | |
6842 | support access watchpoints, we'll have bp_read_watchpoint | |
6843 | watchpoints with hw_access locations. Those should be considered | |
6844 | duplicates of hw_read locations. The hw_read locations will | |
6845 | become hw_access locations later. */ | |
2d134ed3 PA |
6846 | return (loc1->owner->type == loc2->owner->type |
6847 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6848 | && loc1->address == loc2->address | |
6849 | && loc1->length == loc2->length); | |
e4f237da KB |
6850 | } |
6851 | ||
31e77af2 | 6852 | /* See breakpoint.h. */ |
6c95b8df | 6853 | |
31e77af2 | 6854 | int |
accd0bcd YQ |
6855 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6856 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6857 | { |
f5656ead | 6858 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6859 | || aspace1 == aspace2) |
6860 | && addr1 == addr2); | |
6861 | } | |
6862 | ||
f1310107 TJB |
6863 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6864 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6865 | matches ASPACE2. On targets that have global breakpoints, the address | |
6866 | space doesn't really matter. */ | |
6867 | ||
6868 | static int | |
accd0bcd YQ |
6869 | breakpoint_address_match_range (const address_space *aspace1, |
6870 | CORE_ADDR addr1, | |
6871 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6872 | CORE_ADDR addr2) |
6873 | { | |
f5656ead | 6874 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6875 | || aspace1 == aspace2) |
6876 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6877 | } | |
6878 | ||
6879 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6880 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6881 | matches the breakpoint's address space. On targets that have global | |
6882 | breakpoints, the address space doesn't really matter. */ | |
6883 | ||
6884 | static int | |
6885 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6886 | const address_space *aspace, |
f1310107 TJB |
6887 | CORE_ADDR addr) |
6888 | { | |
6889 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6890 | aspace, addr) | |
6891 | || (bl->length | |
6892 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6893 | bl->address, bl->length, | |
6894 | aspace, addr))); | |
6895 | } | |
6896 | ||
d35ae833 PA |
6897 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6898 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6899 | match happens only if ASPACE matches the breakpoint's address | |
6900 | space. On targets that have global breakpoints, the address space | |
6901 | doesn't really matter. */ | |
6902 | ||
6903 | static int | |
6904 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6905 | const address_space *aspace, |
d35ae833 PA |
6906 | CORE_ADDR addr, int len) |
6907 | { | |
6908 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6909 | || bl->pspace->aspace == aspace) | |
6910 | { | |
6911 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6912 | ||
6913 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6914 | return 1; | |
6915 | } | |
6916 | return 0; | |
6917 | } | |
6918 | ||
1e4d1764 YQ |
6919 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6920 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6921 | true, otherwise returns false. */ | |
6922 | ||
6923 | static int | |
6924 | tracepoint_locations_match (struct bp_location *loc1, | |
6925 | struct bp_location *loc2) | |
6926 | { | |
6927 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6928 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6929 | locations at the same address of different tracepoints are regarded as | |
6930 | different locations. */ | |
6931 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6932 | else | |
6933 | return 0; | |
6934 | } | |
6935 | ||
2d134ed3 PA |
6936 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6937 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6938 | represent the same location. */ | |
6939 | ||
6940 | static int | |
4a64f543 MS |
6941 | breakpoint_locations_match (struct bp_location *loc1, |
6942 | struct bp_location *loc2) | |
2d134ed3 | 6943 | { |
2bdf28a0 JK |
6944 | int hw_point1, hw_point2; |
6945 | ||
6946 | /* Both of them must not be in moribund_locations. */ | |
6947 | gdb_assert (loc1->owner != NULL); | |
6948 | gdb_assert (loc2->owner != NULL); | |
6949 | ||
6950 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6951 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6952 | |
6953 | if (hw_point1 != hw_point2) | |
6954 | return 0; | |
6955 | else if (hw_point1) | |
6956 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6957 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6958 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6959 | else |
f1310107 TJB |
6960 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6961 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6962 | loc2->pspace->aspace, loc2->address) | |
6963 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6964 | } |
6965 | ||
76897487 KB |
6966 | static void |
6967 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6968 | int bnum, int have_bnum) | |
6969 | { | |
f63fbe86 MS |
6970 | /* The longest string possibly returned by hex_string_custom |
6971 | is 50 chars. These must be at least that big for safety. */ | |
6972 | char astr1[64]; | |
6973 | char astr2[64]; | |
76897487 | 6974 | |
bb599908 PH |
6975 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6976 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6977 | if (have_bnum) |
8a3fe4f8 | 6978 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6979 | bnum, astr1, astr2); |
6980 | else | |
8a3fe4f8 | 6981 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6982 | } |
6983 | ||
4a64f543 MS |
6984 | /* Adjust a breakpoint's address to account for architectural |
6985 | constraints on breakpoint placement. Return the adjusted address. | |
6986 | Note: Very few targets require this kind of adjustment. For most | |
6987 | targets, this function is simply the identity function. */ | |
76897487 KB |
6988 | |
6989 | static CORE_ADDR | |
a6d9a66e UW |
6990 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6991 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6992 | { |
a6d9a66e | 6993 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6994 | { |
6995 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6996 | return bpaddr; | |
6997 | } | |
88f7da05 KB |
6998 | else if (bptype == bp_watchpoint |
6999 | || bptype == bp_hardware_watchpoint | |
7000 | || bptype == bp_read_watchpoint | |
7001 | || bptype == bp_access_watchpoint | |
fe798b75 | 7002 | || bptype == bp_catchpoint) |
88f7da05 KB |
7003 | { |
7004 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7005 | have their addresses modified. */ | |
7006 | return bpaddr; | |
7007 | } | |
7c16b83e PA |
7008 | else if (bptype == bp_single_step) |
7009 | { | |
7010 | /* Single-step breakpoints should not have their addresses | |
7011 | modified. If there's any architectural constrain that | |
7012 | applies to this address, then it should have already been | |
7013 | taken into account when the breakpoint was created in the | |
7014 | first place. If we didn't do this, stepping through e.g., | |
7015 | Thumb-2 IT blocks would break. */ | |
7016 | return bpaddr; | |
7017 | } | |
76897487 KB |
7018 | else |
7019 | { | |
7020 | CORE_ADDR adjusted_bpaddr; | |
7021 | ||
7022 | /* Some targets have architectural constraints on the placement | |
7023 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7024 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7025 | |
7026 | /* An adjusted breakpoint address can significantly alter | |
7027 | a user's expectations. Print a warning if an adjustment | |
7028 | is required. */ | |
7029 | if (adjusted_bpaddr != bpaddr) | |
7030 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7031 | ||
7032 | return adjusted_bpaddr; | |
7033 | } | |
7034 | } | |
7035 | ||
5625a286 | 7036 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7037 | { |
5625a286 | 7038 | bp_location *loc = this; |
7cc221ef | 7039 | |
348d480f PA |
7040 | gdb_assert (ops != NULL); |
7041 | ||
28010a5d PA |
7042 | loc->ops = ops; |
7043 | loc->owner = owner; | |
b775012e | 7044 | loc->cond_bytecode = NULL; |
0d381245 VP |
7045 | loc->shlib_disabled = 0; |
7046 | loc->enabled = 1; | |
e049a4b5 | 7047 | |
28010a5d | 7048 | switch (owner->type) |
e049a4b5 DJ |
7049 | { |
7050 | case bp_breakpoint: | |
7c16b83e | 7051 | case bp_single_step: |
e049a4b5 DJ |
7052 | case bp_until: |
7053 | case bp_finish: | |
7054 | case bp_longjmp: | |
7055 | case bp_longjmp_resume: | |
e2e4d78b | 7056 | case bp_longjmp_call_dummy: |
186c406b TT |
7057 | case bp_exception: |
7058 | case bp_exception_resume: | |
e049a4b5 | 7059 | case bp_step_resume: |
2c03e5be | 7060 | case bp_hp_step_resume: |
e049a4b5 DJ |
7061 | case bp_watchpoint_scope: |
7062 | case bp_call_dummy: | |
aa7d318d | 7063 | case bp_std_terminate: |
e049a4b5 DJ |
7064 | case bp_shlib_event: |
7065 | case bp_thread_event: | |
7066 | case bp_overlay_event: | |
4efc6507 | 7067 | case bp_jit_event: |
0fd8e87f | 7068 | case bp_longjmp_master: |
aa7d318d | 7069 | case bp_std_terminate_master: |
186c406b | 7070 | case bp_exception_master: |
0e30163f JK |
7071 | case bp_gnu_ifunc_resolver: |
7072 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7073 | case bp_dprintf: |
e049a4b5 | 7074 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7075 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7076 | break; |
7077 | case bp_hardware_breakpoint: | |
7078 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7079 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7080 | break; |
7081 | case bp_hardware_watchpoint: | |
7082 | case bp_read_watchpoint: | |
7083 | case bp_access_watchpoint: | |
7084 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7085 | break; | |
7086 | case bp_watchpoint: | |
ce78b96d | 7087 | case bp_catchpoint: |
15c3d785 PA |
7088 | case bp_tracepoint: |
7089 | case bp_fast_tracepoint: | |
0fb4aa4b | 7090 | case bp_static_tracepoint: |
e049a4b5 DJ |
7091 | loc->loc_type = bp_loc_other; |
7092 | break; | |
7093 | default: | |
e2e0b3e5 | 7094 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7095 | } |
7096 | ||
f431efe5 | 7097 | loc->refc = 1; |
28010a5d PA |
7098 | } |
7099 | ||
7100 | /* Allocate a struct bp_location. */ | |
7101 | ||
7102 | static struct bp_location * | |
7103 | allocate_bp_location (struct breakpoint *bpt) | |
7104 | { | |
348d480f PA |
7105 | return bpt->ops->allocate_location (bpt); |
7106 | } | |
7cc221ef | 7107 | |
f431efe5 PA |
7108 | static void |
7109 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7110 | { |
348d480f | 7111 | loc->ops->dtor (loc); |
4d01a485 | 7112 | delete loc; |
fe3f5fa8 VP |
7113 | } |
7114 | ||
f431efe5 PA |
7115 | /* Increment reference count. */ |
7116 | ||
7117 | static void | |
7118 | incref_bp_location (struct bp_location *bl) | |
7119 | { | |
7120 | ++bl->refc; | |
7121 | } | |
7122 | ||
7123 | /* Decrement reference count. If the reference count reaches 0, | |
7124 | destroy the bp_location. Sets *BLP to NULL. */ | |
7125 | ||
7126 | static void | |
7127 | decref_bp_location (struct bp_location **blp) | |
7128 | { | |
0807b50c PA |
7129 | gdb_assert ((*blp)->refc > 0); |
7130 | ||
f431efe5 PA |
7131 | if (--(*blp)->refc == 0) |
7132 | free_bp_location (*blp); | |
7133 | *blp = NULL; | |
7134 | } | |
7135 | ||
346774a9 | 7136 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7137 | |
b270e6f9 TT |
7138 | static breakpoint * |
7139 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7140 | { |
346774a9 | 7141 | struct breakpoint *b1; |
b270e6f9 | 7142 | struct breakpoint *result = b.get (); |
c906108c | 7143 | |
346774a9 PA |
7144 | /* Add this breakpoint to the end of the chain so that a list of |
7145 | breakpoints will come out in order of increasing numbers. */ | |
7146 | ||
7147 | b1 = breakpoint_chain; | |
7148 | if (b1 == 0) | |
b270e6f9 | 7149 | breakpoint_chain = b.release (); |
346774a9 PA |
7150 | else |
7151 | { | |
7152 | while (b1->next) | |
7153 | b1 = b1->next; | |
b270e6f9 | 7154 | b1->next = b.release (); |
346774a9 | 7155 | } |
b270e6f9 TT |
7156 | |
7157 | return result; | |
346774a9 PA |
7158 | } |
7159 | ||
7160 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7161 | ||
7162 | static void | |
7163 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7164 | struct gdbarch *gdbarch, | |
28010a5d | 7165 | enum bptype bptype, |
c0a91b2b | 7166 | const struct breakpoint_ops *ops) |
346774a9 | 7167 | { |
348d480f PA |
7168 | gdb_assert (ops != NULL); |
7169 | ||
28010a5d | 7170 | b->ops = ops; |
4d28f7a8 | 7171 | b->type = bptype; |
a6d9a66e | 7172 | b->gdbarch = gdbarch; |
c906108c SS |
7173 | b->language = current_language->la_language; |
7174 | b->input_radix = input_radix; | |
d0fb5eae | 7175 | b->related_breakpoint = b; |
346774a9 PA |
7176 | } |
7177 | ||
7178 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7179 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7180 | |
7181 | static struct breakpoint * | |
7182 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7183 | enum bptype bptype, |
c0a91b2b | 7184 | const struct breakpoint_ops *ops) |
346774a9 | 7185 | { |
3b0871f4 | 7186 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7187 | |
3b0871f4 | 7188 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7189 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7190 | } |
7191 | ||
0e30163f JK |
7192 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7193 | resolutions should be made as the user specified the location explicitly | |
7194 | enough. */ | |
7195 | ||
0d381245 | 7196 | static void |
0e30163f | 7197 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7198 | { |
2bdf28a0 JK |
7199 | gdb_assert (loc->owner != NULL); |
7200 | ||
0d381245 | 7201 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7202 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7203 | || is_tracepoint (loc->owner)) |
0d381245 | 7204 | { |
0e30163f | 7205 | int is_gnu_ifunc; |
2c02bd72 | 7206 | const char *function_name; |
6a3a010b | 7207 | CORE_ADDR func_addr; |
0e30163f | 7208 | |
2c02bd72 | 7209 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7210 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7211 | |
7212 | if (is_gnu_ifunc && !explicit_loc) | |
7213 | { | |
7214 | struct breakpoint *b = loc->owner; | |
7215 | ||
7216 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7217 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7218 | &loc->requested_address)) |
7219 | { | |
7220 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7221 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7222 | loc->requested_address, | |
7223 | b->type); | |
7224 | } | |
7225 | else if (b->type == bp_breakpoint && b->loc == loc | |
7226 | && loc->next == NULL && b->related_breakpoint == b) | |
7227 | { | |
7228 | /* Create only the whole new breakpoint of this type but do not | |
7229 | mess more complicated breakpoints with multiple locations. */ | |
7230 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7231 | /* Remember the resolver's address for use by the return |
7232 | breakpoint. */ | |
7233 | loc->related_address = func_addr; | |
0e30163f JK |
7234 | } |
7235 | } | |
7236 | ||
2c02bd72 DE |
7237 | if (function_name) |
7238 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7239 | } |
7240 | } | |
7241 | ||
a6d9a66e | 7242 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7243 | struct gdbarch * |
a6d9a66e UW |
7244 | get_sal_arch (struct symtab_and_line sal) |
7245 | { | |
7246 | if (sal.section) | |
7247 | return get_objfile_arch (sal.section->objfile); | |
7248 | if (sal.symtab) | |
eb822aa6 | 7249 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7250 | |
7251 | return NULL; | |
7252 | } | |
7253 | ||
346774a9 PA |
7254 | /* Low level routine for partially initializing a breakpoint of type |
7255 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7256 | file name, and line number are provided by SAL. |
0d381245 VP |
7257 | |
7258 | It is expected that the caller will complete the initialization of | |
7259 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7260 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7261 | |
346774a9 PA |
7262 | static void |
7263 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7264 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7265 | const struct breakpoint_ops *ops) |
0d381245 | 7266 | { |
28010a5d | 7267 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7268 | |
3742cc8b | 7269 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7270 | |
6c95b8df PA |
7271 | if (bptype != bp_catchpoint) |
7272 | gdb_assert (sal.pspace != NULL); | |
7273 | ||
f8eba3c6 TT |
7274 | /* Store the program space that was used to set the breakpoint, |
7275 | except for ordinary breakpoints, which are independent of the | |
7276 | program space. */ | |
7277 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7278 | b->pspace = sal.pspace; | |
346774a9 | 7279 | } |
c906108c | 7280 | |
346774a9 PA |
7281 | /* set_raw_breakpoint is a low level routine for allocating and |
7282 | partially initializing a breakpoint of type BPTYPE. The newly | |
7283 | created breakpoint's address, section, source file name, and line | |
7284 | number are provided by SAL. The newly created and partially | |
7285 | initialized breakpoint is added to the breakpoint chain and | |
7286 | is also returned as the value of this function. | |
7287 | ||
7288 | It is expected that the caller will complete the initialization of | |
7289 | the newly created breakpoint struct as well as output any status | |
7290 | information regarding the creation of a new breakpoint. In | |
7291 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7292 | number! Care should be taken to not allow an error to occur | |
7293 | prior to completing the initialization of the breakpoint. If this | |
7294 | should happen, a bogus breakpoint will be left on the chain. */ | |
7295 | ||
7296 | struct breakpoint * | |
7297 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7298 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7299 | const struct breakpoint_ops *ops) |
346774a9 | 7300 | { |
3b0871f4 | 7301 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7302 | |
3b0871f4 | 7303 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7304 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7305 | } |
7306 | ||
53a5351d | 7307 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7308 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7309 | initiated the operation. */ | |
c906108c SS |
7310 | |
7311 | void | |
186c406b | 7312 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7313 | { |
35df4500 | 7314 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7315 | int thread = tp->global_num; |
0fd8e87f UW |
7316 | |
7317 | /* To avoid having to rescan all objfile symbols at every step, | |
7318 | we maintain a list of continually-inserted but always disabled | |
7319 | longjmp "master" breakpoints. Here, we simply create momentary | |
7320 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7321 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7322 | if (b->pspace == current_program_space |
186c406b TT |
7323 | && (b->type == bp_longjmp_master |
7324 | || b->type == bp_exception_master)) | |
0fd8e87f | 7325 | { |
06edf0c0 PA |
7326 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7327 | struct breakpoint *clone; | |
cc59ec59 | 7328 | |
e2e4d78b JK |
7329 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7330 | after their removal. */ | |
06edf0c0 | 7331 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7332 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7333 | clone->thread = thread; |
7334 | } | |
186c406b TT |
7335 | |
7336 | tp->initiating_frame = frame; | |
c906108c SS |
7337 | } |
7338 | ||
611c83ae | 7339 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7340 | void |
611c83ae | 7341 | delete_longjmp_breakpoint (int thread) |
c906108c | 7342 | { |
35df4500 | 7343 | struct breakpoint *b, *b_tmp; |
c906108c | 7344 | |
35df4500 | 7345 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7346 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7347 | { |
7348 | if (b->thread == thread) | |
7349 | delete_breakpoint (b); | |
7350 | } | |
c906108c SS |
7351 | } |
7352 | ||
f59f708a PA |
7353 | void |
7354 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7355 | { | |
7356 | struct breakpoint *b, *b_tmp; | |
7357 | ||
7358 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7359 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7360 | { | |
7361 | if (b->thread == thread) | |
7362 | b->disposition = disp_del_at_next_stop; | |
7363 | } | |
7364 | } | |
7365 | ||
e2e4d78b JK |
7366 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7367 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7368 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7369 | breakpoints. */ | |
7370 | ||
7371 | struct breakpoint * | |
7372 | set_longjmp_breakpoint_for_call_dummy (void) | |
7373 | { | |
7374 | struct breakpoint *b, *retval = NULL; | |
7375 | ||
7376 | ALL_BREAKPOINTS (b) | |
7377 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7378 | { | |
7379 | struct breakpoint *new_b; | |
7380 | ||
7381 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7382 | &momentary_breakpoint_ops, |
7383 | 1); | |
5d5658a1 | 7384 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7385 | |
7386 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7387 | ||
7388 | gdb_assert (new_b->related_breakpoint == new_b); | |
7389 | if (retval == NULL) | |
7390 | retval = new_b; | |
7391 | new_b->related_breakpoint = retval; | |
7392 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7393 | retval = retval->related_breakpoint; | |
7394 | retval->related_breakpoint = new_b; | |
7395 | } | |
7396 | ||
7397 | return retval; | |
7398 | } | |
7399 | ||
7400 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7401 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7402 | stack. |
7403 | ||
7404 | You should call this function only at places where it is safe to currently | |
7405 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7406 | frames. */ | |
7407 | ||
7408 | void | |
b67a2c6f | 7409 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7410 | { |
7411 | struct breakpoint *b, *b_tmp; | |
7412 | ||
7413 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7414 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7415 | { |
7416 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7417 | ||
7418 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7419 | dummy_b = dummy_b->related_breakpoint; | |
7420 | if (dummy_b->type != bp_call_dummy | |
7421 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7422 | continue; | |
7423 | ||
b67a2c6f | 7424 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7425 | |
7426 | while (b->related_breakpoint != b) | |
7427 | { | |
7428 | if (b_tmp == b->related_breakpoint) | |
7429 | b_tmp = b->related_breakpoint->next; | |
7430 | delete_breakpoint (b->related_breakpoint); | |
7431 | } | |
7432 | delete_breakpoint (b); | |
7433 | } | |
7434 | } | |
7435 | ||
1900040c MS |
7436 | void |
7437 | enable_overlay_breakpoints (void) | |
7438 | { | |
52f0bd74 | 7439 | struct breakpoint *b; |
1900040c MS |
7440 | |
7441 | ALL_BREAKPOINTS (b) | |
7442 | if (b->type == bp_overlay_event) | |
7443 | { | |
7444 | b->enable_state = bp_enabled; | |
44702360 | 7445 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7446 | overlay_events_enabled = 1; |
1900040c MS |
7447 | } |
7448 | } | |
7449 | ||
7450 | void | |
7451 | disable_overlay_breakpoints (void) | |
7452 | { | |
52f0bd74 | 7453 | struct breakpoint *b; |
1900040c MS |
7454 | |
7455 | ALL_BREAKPOINTS (b) | |
7456 | if (b->type == bp_overlay_event) | |
7457 | { | |
7458 | b->enable_state = bp_disabled; | |
44702360 | 7459 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7460 | overlay_events_enabled = 0; |
1900040c MS |
7461 | } |
7462 | } | |
7463 | ||
aa7d318d TT |
7464 | /* Set an active std::terminate breakpoint for each std::terminate |
7465 | master breakpoint. */ | |
7466 | void | |
7467 | set_std_terminate_breakpoint (void) | |
7468 | { | |
35df4500 | 7469 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7470 | |
35df4500 | 7471 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7472 | if (b->pspace == current_program_space |
7473 | && b->type == bp_std_terminate_master) | |
7474 | { | |
06edf0c0 | 7475 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7476 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7477 | } |
7478 | } | |
7479 | ||
7480 | /* Delete all the std::terminate breakpoints. */ | |
7481 | void | |
7482 | delete_std_terminate_breakpoint (void) | |
7483 | { | |
35df4500 | 7484 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7485 | |
35df4500 | 7486 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7487 | if (b->type == bp_std_terminate) |
7488 | delete_breakpoint (b); | |
7489 | } | |
7490 | ||
c4093a6a | 7491 | struct breakpoint * |
a6d9a66e | 7492 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7493 | { |
7494 | struct breakpoint *b; | |
c4093a6a | 7495 | |
06edf0c0 PA |
7496 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7497 | &internal_breakpoint_ops); | |
7498 | ||
b5de0fa7 | 7499 | b->enable_state = bp_enabled; |
f00aae0f | 7500 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7501 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7502 | |
44702360 | 7503 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7504 | |
c4093a6a JM |
7505 | return b; |
7506 | } | |
7507 | ||
0101ce28 JJ |
7508 | struct lang_and_radix |
7509 | { | |
7510 | enum language lang; | |
7511 | int radix; | |
7512 | }; | |
7513 | ||
4efc6507 DE |
7514 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7515 | ||
7516 | struct breakpoint * | |
7517 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7518 | { | |
2a7f3dff PA |
7519 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7520 | &internal_breakpoint_ops); | |
4efc6507 | 7521 | } |
0101ce28 | 7522 | |
03673fc7 PP |
7523 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7524 | ||
7525 | void | |
7526 | remove_jit_event_breakpoints (void) | |
7527 | { | |
7528 | struct breakpoint *b, *b_tmp; | |
7529 | ||
7530 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7531 | if (b->type == bp_jit_event | |
7532 | && b->loc->pspace == current_program_space) | |
7533 | delete_breakpoint (b); | |
7534 | } | |
7535 | ||
cae688ec JJ |
7536 | void |
7537 | remove_solib_event_breakpoints (void) | |
7538 | { | |
35df4500 | 7539 | struct breakpoint *b, *b_tmp; |
cae688ec | 7540 | |
35df4500 | 7541 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7542 | if (b->type == bp_shlib_event |
7543 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7544 | delete_breakpoint (b); |
7545 | } | |
7546 | ||
f37f681c PA |
7547 | /* See breakpoint.h. */ |
7548 | ||
7549 | void | |
7550 | remove_solib_event_breakpoints_at_next_stop (void) | |
7551 | { | |
7552 | struct breakpoint *b, *b_tmp; | |
7553 | ||
7554 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7555 | if (b->type == bp_shlib_event | |
7556 | && b->loc->pspace == current_program_space) | |
7557 | b->disposition = disp_del_at_next_stop; | |
7558 | } | |
7559 | ||
04086b45 PA |
7560 | /* Helper for create_solib_event_breakpoint / |
7561 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7562 | INSERT_MODE to pass through to update_global_location_list. */ | |
7563 | ||
7564 | static struct breakpoint * | |
7565 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7566 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7567 | { |
7568 | struct breakpoint *b; | |
7569 | ||
06edf0c0 PA |
7570 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7571 | &internal_breakpoint_ops); | |
04086b45 | 7572 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7573 | return b; |
7574 | } | |
7575 | ||
04086b45 PA |
7576 | struct breakpoint * |
7577 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7578 | { | |
7579 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7580 | } | |
7581 | ||
f37f681c PA |
7582 | /* See breakpoint.h. */ |
7583 | ||
7584 | struct breakpoint * | |
7585 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7586 | { | |
7587 | struct breakpoint *b; | |
7588 | ||
04086b45 PA |
7589 | /* Explicitly tell update_global_location_list to insert |
7590 | locations. */ | |
7591 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7592 | if (!b->loc->inserted) |
7593 | { | |
7594 | delete_breakpoint (b); | |
7595 | return NULL; | |
7596 | } | |
7597 | return b; | |
7598 | } | |
7599 | ||
cae688ec JJ |
7600 | /* Disable any breakpoints that are on code in shared libraries. Only |
7601 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7602 | ||
7603 | void | |
cb851954 | 7604 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7605 | { |
876fa593 | 7606 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7607 | |
876fa593 | 7608 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7609 | { |
2bdf28a0 | 7610 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7611 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7612 | |
4a64f543 MS |
7613 | /* We apply the check to all breakpoints, including disabled for |
7614 | those with loc->duplicate set. This is so that when breakpoint | |
7615 | becomes enabled, or the duplicate is removed, gdb will try to | |
7616 | insert all breakpoints. If we don't set shlib_disabled here, | |
7617 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7618 | if (((b->type == bp_breakpoint) |
508ccb1f | 7619 | || (b->type == bp_jit_event) |
1042e4c0 | 7620 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7621 | || (is_tracepoint (b))) |
6c95b8df | 7622 | && loc->pspace == current_program_space |
0d381245 | 7623 | && !loc->shlib_disabled |
6c95b8df | 7624 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7625 | ) |
0d381245 VP |
7626 | { |
7627 | loc->shlib_disabled = 1; | |
7628 | } | |
cae688ec JJ |
7629 | } |
7630 | } | |
7631 | ||
63644780 NB |
7632 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7633 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7634 | disabled ones can just stay disabled. */ | |
84acb35a | 7635 | |
75149521 | 7636 | static void |
84acb35a JJ |
7637 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7638 | { | |
876fa593 | 7639 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7640 | int disabled_shlib_breaks = 0; |
7641 | ||
876fa593 | 7642 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7643 | { |
2bdf28a0 | 7644 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7645 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7646 | |
1e4d1764 | 7647 | if (solib->pspace == loc->pspace |
e2dd7057 | 7648 | && !loc->shlib_disabled |
1e4d1764 YQ |
7649 | && (((b->type == bp_breakpoint |
7650 | || b->type == bp_jit_event | |
7651 | || b->type == bp_hardware_breakpoint) | |
7652 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7653 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7654 | || is_tracepoint (b)) | |
e2dd7057 | 7655 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7656 | { |
e2dd7057 PP |
7657 | loc->shlib_disabled = 1; |
7658 | /* At this point, we cannot rely on remove_breakpoint | |
7659 | succeeding so we must mark the breakpoint as not inserted | |
7660 | to prevent future errors occurring in remove_breakpoints. */ | |
7661 | loc->inserted = 0; | |
8d3788bd VP |
7662 | |
7663 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7664 | observer_notify_breakpoint_modified (b); | |
7665 | ||
e2dd7057 PP |
7666 | if (!disabled_shlib_breaks) |
7667 | { | |
223ffa71 | 7668 | target_terminal::ours_for_output (); |
3e43a32a MS |
7669 | warning (_("Temporarily disabling breakpoints " |
7670 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7671 | solib->so_name); |
84acb35a | 7672 | } |
e2dd7057 | 7673 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7674 | } |
7675 | } | |
84acb35a JJ |
7676 | } |
7677 | ||
63644780 NB |
7678 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7679 | notification of free_objfile. Only apply to enabled breakpoints, | |
7680 | disabled ones can just stay disabled. */ | |
7681 | ||
7682 | static void | |
7683 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7684 | { | |
7685 | struct breakpoint *b; | |
7686 | ||
7687 | if (objfile == NULL) | |
7688 | return; | |
7689 | ||
d03de421 PA |
7690 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7691 | managed by the user with add-symbol-file/remove-symbol-file. | |
7692 | Similarly to how breakpoints in shared libraries are handled in | |
7693 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7694 | shlib_disabled so they end up uninserted on the next global |
7695 | location list update. Shared libraries not loaded by the user | |
7696 | aren't handled here -- they're already handled in | |
7697 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7698 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7699 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7700 | main objfile). */ | |
7701 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7702 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7703 | return; |
7704 | ||
7705 | ALL_BREAKPOINTS (b) | |
7706 | { | |
7707 | struct bp_location *loc; | |
7708 | int bp_modified = 0; | |
7709 | ||
7710 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7711 | continue; | |
7712 | ||
7713 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7714 | { | |
7715 | CORE_ADDR loc_addr = loc->address; | |
7716 | ||
7717 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7718 | && loc->loc_type != bp_loc_software_breakpoint) | |
7719 | continue; | |
7720 | ||
7721 | if (loc->shlib_disabled != 0) | |
7722 | continue; | |
7723 | ||
7724 | if (objfile->pspace != loc->pspace) | |
7725 | continue; | |
7726 | ||
7727 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7728 | && loc->loc_type != bp_loc_software_breakpoint) | |
7729 | continue; | |
7730 | ||
7731 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7732 | { | |
7733 | loc->shlib_disabled = 1; | |
08351840 PA |
7734 | /* At this point, we don't know whether the object was |
7735 | unmapped from the inferior or not, so leave the | |
7736 | inserted flag alone. We'll handle failure to | |
7737 | uninsert quietly, in case the object was indeed | |
7738 | unmapped. */ | |
63644780 NB |
7739 | |
7740 | mark_breakpoint_location_modified (loc); | |
7741 | ||
7742 | bp_modified = 1; | |
7743 | } | |
7744 | } | |
7745 | ||
7746 | if (bp_modified) | |
7747 | observer_notify_breakpoint_modified (b); | |
7748 | } | |
7749 | } | |
7750 | ||
ce78b96d JB |
7751 | /* FORK & VFORK catchpoints. */ |
7752 | ||
e29a4733 | 7753 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7754 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7755 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7756 | |
c1fc2657 | 7757 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7758 | { |
e29a4733 PA |
7759 | /* Process id of a child process whose forking triggered this |
7760 | catchpoint. This field is only valid immediately after this | |
7761 | catchpoint has triggered. */ | |
7762 | ptid_t forked_inferior_pid; | |
7763 | }; | |
7764 | ||
4a64f543 MS |
7765 | /* Implement the "insert" breakpoint_ops method for fork |
7766 | catchpoints. */ | |
ce78b96d | 7767 | |
77b06cd7 TJB |
7768 | static int |
7769 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7770 | { |
dfd4cc63 | 7771 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7772 | } |
7773 | ||
4a64f543 MS |
7774 | /* Implement the "remove" breakpoint_ops method for fork |
7775 | catchpoints. */ | |
ce78b96d JB |
7776 | |
7777 | static int | |
73971819 | 7778 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7779 | { |
dfd4cc63 | 7780 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7781 | } |
7782 | ||
7783 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7784 | catchpoints. */ | |
7785 | ||
7786 | static int | |
f1310107 | 7787 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7788 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7789 | const struct target_waitstatus *ws) |
ce78b96d | 7790 | { |
e29a4733 PA |
7791 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7792 | ||
f90263c1 TT |
7793 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7794 | return 0; | |
7795 | ||
7796 | c->forked_inferior_pid = ws->value.related_pid; | |
7797 | return 1; | |
ce78b96d JB |
7798 | } |
7799 | ||
4a64f543 MS |
7800 | /* Implement the "print_it" breakpoint_ops method for fork |
7801 | catchpoints. */ | |
ce78b96d JB |
7802 | |
7803 | static enum print_stop_action | |
348d480f | 7804 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7805 | { |
36dfb11c | 7806 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7807 | struct breakpoint *b = bs->breakpoint_at; |
7808 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7809 | |
ce78b96d | 7810 | annotate_catchpoint (b->number); |
f303dbd6 | 7811 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7812 | if (b->disposition == disp_del) |
112e8700 | 7813 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7814 | else |
112e8700 SM |
7815 | uiout->text ("Catchpoint "); |
7816 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7817 | { |
112e8700 SM |
7818 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7819 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7820 | } |
112e8700 SM |
7821 | uiout->field_int ("bkptno", b->number); |
7822 | uiout->text (" (forked process "); | |
7823 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7824 | uiout->text ("), "); | |
ce78b96d JB |
7825 | return PRINT_SRC_AND_LOC; |
7826 | } | |
7827 | ||
4a64f543 MS |
7828 | /* Implement the "print_one" breakpoint_ops method for fork |
7829 | catchpoints. */ | |
ce78b96d JB |
7830 | |
7831 | static void | |
a6d9a66e | 7832 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7833 | { |
e29a4733 | 7834 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7835 | struct value_print_options opts; |
79a45e25 | 7836 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7837 | |
7838 | get_user_print_options (&opts); | |
7839 | ||
4a64f543 MS |
7840 | /* Field 4, the address, is omitted (which makes the columns not |
7841 | line up too nicely with the headers, but the effect is relatively | |
7842 | readable). */ | |
79a45b7d | 7843 | if (opts.addressprint) |
112e8700 | 7844 | uiout->field_skip ("addr"); |
ce78b96d | 7845 | annotate_field (5); |
112e8700 | 7846 | uiout->text ("fork"); |
e29a4733 | 7847 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7848 | { |
112e8700 SM |
7849 | uiout->text (", process "); |
7850 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7851 | uiout->spaces (1); | |
ce78b96d | 7852 | } |
8ac3646f | 7853 | |
112e8700 SM |
7854 | if (uiout->is_mi_like_p ()) |
7855 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7856 | } |
7857 | ||
7858 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7859 | catchpoints. */ | |
7860 | ||
7861 | static void | |
7862 | print_mention_catch_fork (struct breakpoint *b) | |
7863 | { | |
7864 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7865 | } | |
7866 | ||
6149aea9 PA |
7867 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7868 | catchpoints. */ | |
7869 | ||
7870 | static void | |
7871 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7872 | { | |
7873 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7874 | print_recreate_thread (b, fp); |
6149aea9 PA |
7875 | } |
7876 | ||
ce78b96d JB |
7877 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7878 | ||
2060206e | 7879 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7880 | |
4a64f543 MS |
7881 | /* Implement the "insert" breakpoint_ops method for vfork |
7882 | catchpoints. */ | |
ce78b96d | 7883 | |
77b06cd7 TJB |
7884 | static int |
7885 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7886 | { |
dfd4cc63 | 7887 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7888 | } |
7889 | ||
4a64f543 MS |
7890 | /* Implement the "remove" breakpoint_ops method for vfork |
7891 | catchpoints. */ | |
ce78b96d JB |
7892 | |
7893 | static int | |
73971819 | 7894 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7895 | { |
dfd4cc63 | 7896 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7897 | } |
7898 | ||
7899 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7900 | catchpoints. */ | |
7901 | ||
7902 | static int | |
f1310107 | 7903 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7904 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7905 | const struct target_waitstatus *ws) |
ce78b96d | 7906 | { |
e29a4733 PA |
7907 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7908 | ||
f90263c1 TT |
7909 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7910 | return 0; | |
7911 | ||
7912 | c->forked_inferior_pid = ws->value.related_pid; | |
7913 | return 1; | |
ce78b96d JB |
7914 | } |
7915 | ||
4a64f543 MS |
7916 | /* Implement the "print_it" breakpoint_ops method for vfork |
7917 | catchpoints. */ | |
ce78b96d JB |
7918 | |
7919 | static enum print_stop_action | |
348d480f | 7920 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7921 | { |
36dfb11c | 7922 | struct ui_out *uiout = current_uiout; |
348d480f | 7923 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7924 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7925 | ||
ce78b96d | 7926 | annotate_catchpoint (b->number); |
f303dbd6 | 7927 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7928 | if (b->disposition == disp_del) |
112e8700 | 7929 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7930 | else |
112e8700 SM |
7931 | uiout->text ("Catchpoint "); |
7932 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7933 | { |
112e8700 SM |
7934 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7935 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7936 | } |
112e8700 SM |
7937 | uiout->field_int ("bkptno", b->number); |
7938 | uiout->text (" (vforked process "); | |
7939 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7940 | uiout->text ("), "); | |
ce78b96d JB |
7941 | return PRINT_SRC_AND_LOC; |
7942 | } | |
7943 | ||
4a64f543 MS |
7944 | /* Implement the "print_one" breakpoint_ops method for vfork |
7945 | catchpoints. */ | |
ce78b96d JB |
7946 | |
7947 | static void | |
a6d9a66e | 7948 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7949 | { |
e29a4733 | 7950 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7951 | struct value_print_options opts; |
79a45e25 | 7952 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7953 | |
7954 | get_user_print_options (&opts); | |
4a64f543 MS |
7955 | /* Field 4, the address, is omitted (which makes the columns not |
7956 | line up too nicely with the headers, but the effect is relatively | |
7957 | readable). */ | |
79a45b7d | 7958 | if (opts.addressprint) |
112e8700 | 7959 | uiout->field_skip ("addr"); |
ce78b96d | 7960 | annotate_field (5); |
112e8700 | 7961 | uiout->text ("vfork"); |
e29a4733 | 7962 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7963 | { |
112e8700 SM |
7964 | uiout->text (", process "); |
7965 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7966 | uiout->spaces (1); | |
ce78b96d | 7967 | } |
8ac3646f | 7968 | |
112e8700 SM |
7969 | if (uiout->is_mi_like_p ()) |
7970 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7971 | } |
7972 | ||
7973 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7974 | catchpoints. */ | |
7975 | ||
7976 | static void | |
7977 | print_mention_catch_vfork (struct breakpoint *b) | |
7978 | { | |
7979 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7980 | } | |
7981 | ||
6149aea9 PA |
7982 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7983 | catchpoints. */ | |
7984 | ||
7985 | static void | |
7986 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7987 | { | |
7988 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7989 | print_recreate_thread (b, fp); |
6149aea9 PA |
7990 | } |
7991 | ||
ce78b96d JB |
7992 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7993 | ||
2060206e | 7994 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7995 | |
edcc5120 | 7996 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7997 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7998 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7999 | ||
c1fc2657 | 8000 | struct solib_catchpoint : public breakpoint |
edcc5120 | 8001 | { |
c1fc2657 | 8002 | ~solib_catchpoint () override; |
edcc5120 TT |
8003 | |
8004 | /* True for "catch load", false for "catch unload". */ | |
8005 | unsigned char is_load; | |
8006 | ||
8007 | /* Regular expression to match, if any. COMPILED is only valid when | |
8008 | REGEX is non-NULL. */ | |
8009 | char *regex; | |
2d7cc5c7 | 8010 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8011 | }; |
8012 | ||
c1fc2657 | 8013 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8014 | { |
c1fc2657 | 8015 | xfree (this->regex); |
edcc5120 TT |
8016 | } |
8017 | ||
8018 | static int | |
8019 | insert_catch_solib (struct bp_location *ignore) | |
8020 | { | |
8021 | return 0; | |
8022 | } | |
8023 | ||
8024 | static int | |
73971819 | 8025 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8026 | { |
8027 | return 0; | |
8028 | } | |
8029 | ||
8030 | static int | |
8031 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8032 | const address_space *aspace, |
edcc5120 TT |
8033 | CORE_ADDR bp_addr, |
8034 | const struct target_waitstatus *ws) | |
8035 | { | |
8036 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8037 | struct breakpoint *other; | |
8038 | ||
8039 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8040 | return 1; | |
8041 | ||
8042 | ALL_BREAKPOINTS (other) | |
8043 | { | |
8044 | struct bp_location *other_bl; | |
8045 | ||
8046 | if (other == bl->owner) | |
8047 | continue; | |
8048 | ||
8049 | if (other->type != bp_shlib_event) | |
8050 | continue; | |
8051 | ||
c1fc2657 | 8052 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8053 | continue; |
8054 | ||
8055 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8056 | { | |
8057 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8058 | return 1; | |
8059 | } | |
8060 | } | |
8061 | ||
8062 | return 0; | |
8063 | } | |
8064 | ||
8065 | static void | |
8066 | check_status_catch_solib (struct bpstats *bs) | |
8067 | { | |
8068 | struct solib_catchpoint *self | |
8069 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8070 | int ix; | |
8071 | ||
8072 | if (self->is_load) | |
8073 | { | |
8074 | struct so_list *iter; | |
8075 | ||
8076 | for (ix = 0; | |
8077 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8078 | ix, iter); | |
8079 | ++ix) | |
8080 | { | |
8081 | if (!self->regex | |
2d7cc5c7 | 8082 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8083 | return; |
8084 | } | |
8085 | } | |
8086 | else | |
8087 | { | |
8088 | char *iter; | |
8089 | ||
8090 | for (ix = 0; | |
8091 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8092 | ix, iter); | |
8093 | ++ix) | |
8094 | { | |
8095 | if (!self->regex | |
2d7cc5c7 | 8096 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8097 | return; |
8098 | } | |
8099 | } | |
8100 | ||
8101 | bs->stop = 0; | |
8102 | bs->print_it = print_it_noop; | |
8103 | } | |
8104 | ||
8105 | static enum print_stop_action | |
8106 | print_it_catch_solib (bpstat bs) | |
8107 | { | |
8108 | struct breakpoint *b = bs->breakpoint_at; | |
8109 | struct ui_out *uiout = current_uiout; | |
8110 | ||
8111 | annotate_catchpoint (b->number); | |
f303dbd6 | 8112 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8113 | if (b->disposition == disp_del) |
112e8700 | 8114 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8115 | else |
112e8700 SM |
8116 | uiout->text ("Catchpoint "); |
8117 | uiout->field_int ("bkptno", b->number); | |
8118 | uiout->text ("\n"); | |
8119 | if (uiout->is_mi_like_p ()) | |
8120 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8121 | print_solib_event (1); |
8122 | return PRINT_SRC_AND_LOC; | |
8123 | } | |
8124 | ||
8125 | static void | |
8126 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8127 | { | |
8128 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8129 | struct value_print_options opts; | |
8130 | struct ui_out *uiout = current_uiout; | |
8131 | char *msg; | |
8132 | ||
8133 | get_user_print_options (&opts); | |
8134 | /* Field 4, the address, is omitted (which makes the columns not | |
8135 | line up too nicely with the headers, but the effect is relatively | |
8136 | readable). */ | |
8137 | if (opts.addressprint) | |
8138 | { | |
8139 | annotate_field (4); | |
112e8700 | 8140 | uiout->field_skip ("addr"); |
edcc5120 TT |
8141 | } |
8142 | ||
8143 | annotate_field (5); | |
8144 | if (self->is_load) | |
8145 | { | |
8146 | if (self->regex) | |
8147 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8148 | else | |
8149 | msg = xstrdup (_("load of library")); | |
8150 | } | |
8151 | else | |
8152 | { | |
8153 | if (self->regex) | |
8154 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8155 | else | |
8156 | msg = xstrdup (_("unload of library")); | |
8157 | } | |
112e8700 | 8158 | uiout->field_string ("what", msg); |
edcc5120 | 8159 | xfree (msg); |
8ac3646f | 8160 | |
112e8700 SM |
8161 | if (uiout->is_mi_like_p ()) |
8162 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8163 | } |
8164 | ||
8165 | static void | |
8166 | print_mention_catch_solib (struct breakpoint *b) | |
8167 | { | |
8168 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8169 | ||
8170 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8171 | self->is_load ? "load" : "unload"); | |
8172 | } | |
8173 | ||
8174 | static void | |
8175 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8176 | { | |
8177 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8178 | ||
8179 | fprintf_unfiltered (fp, "%s %s", | |
8180 | b->disposition == disp_del ? "tcatch" : "catch", | |
8181 | self->is_load ? "load" : "unload"); | |
8182 | if (self->regex) | |
8183 | fprintf_unfiltered (fp, " %s", self->regex); | |
8184 | fprintf_unfiltered (fp, "\n"); | |
8185 | } | |
8186 | ||
8187 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8188 | ||
91985142 MG |
8189 | /* Shared helper function (MI and CLI) for creating and installing |
8190 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8191 | the events to be caught are load events, otherwise they are | |
8192 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8193 | temporary one. If ENABLED is non-zero the catchpoint is | |
8194 | created in an enabled state. */ | |
edcc5120 | 8195 | |
91985142 | 8196 | void |
a121b7c1 | 8197 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8198 | { |
edcc5120 | 8199 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8200 | |
edcc5120 TT |
8201 | if (!arg) |
8202 | arg = ""; | |
f1735a53 | 8203 | arg = skip_spaces (arg); |
edcc5120 | 8204 | |
36bd8eaa | 8205 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8206 | |
8207 | if (*arg != '\0') | |
8208 | { | |
2d7cc5c7 PA |
8209 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8210 | _("Invalid regexp"))); | |
edcc5120 TT |
8211 | c->regex = xstrdup (arg); |
8212 | } | |
8213 | ||
8214 | c->is_load = is_load; | |
36bd8eaa | 8215 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8216 | &catch_solib_breakpoint_ops); |
8217 | ||
c1fc2657 | 8218 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8219 | |
b270e6f9 | 8220 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8221 | } |
8222 | ||
91985142 MG |
8223 | /* A helper function that does all the work for "catch load" and |
8224 | "catch unload". */ | |
8225 | ||
8226 | static void | |
eb4c3f4a | 8227 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8228 | struct cmd_list_element *command) |
8229 | { | |
8230 | int tempflag; | |
8231 | const int enabled = 1; | |
8232 | ||
8233 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8234 | ||
8235 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8236 | } | |
8237 | ||
edcc5120 | 8238 | static void |
eb4c3f4a | 8239 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8240 | struct cmd_list_element *command) |
8241 | { | |
8242 | catch_load_or_unload (arg, from_tty, 1, command); | |
8243 | } | |
8244 | ||
8245 | static void | |
eb4c3f4a | 8246 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8247 | struct cmd_list_element *command) |
8248 | { | |
8249 | catch_load_or_unload (arg, from_tty, 0, command); | |
8250 | } | |
8251 | ||
346774a9 PA |
8252 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8253 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8254 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8255 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8256 | |
ab04a2af | 8257 | void |
346774a9 PA |
8258 | init_catchpoint (struct breakpoint *b, |
8259 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8260 | const char *cond_string, |
c0a91b2b | 8261 | const struct breakpoint_ops *ops) |
c906108c | 8262 | { |
51abb421 | 8263 | symtab_and_line sal; |
6c95b8df | 8264 | sal.pspace = current_program_space; |
c5aa993b | 8265 | |
28010a5d | 8266 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8267 | |
1b36a34b | 8268 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8269 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8270 | } |
8271 | ||
28010a5d | 8272 | void |
b270e6f9 | 8273 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8274 | { |
b270e6f9 | 8275 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8276 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8277 | if (is_tracepoint (b)) |
8278 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8279 | if (!internal) |
8280 | mention (b); | |
c56053d2 | 8281 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8282 | |
8283 | if (update_gll) | |
44702360 | 8284 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8285 | } |
8286 | ||
9b70b993 | 8287 | static void |
a6d9a66e | 8288 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8289 | int tempflag, const char *cond_string, |
c0a91b2b | 8290 | const struct breakpoint_ops *ops) |
c906108c | 8291 | { |
b270e6f9 | 8292 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8293 | |
b270e6f9 | 8294 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8295 | |
8296 | c->forked_inferior_pid = null_ptid; | |
8297 | ||
b270e6f9 | 8298 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8299 | } |
8300 | ||
fe798b75 JB |
8301 | /* Exec catchpoints. */ |
8302 | ||
b4d90040 | 8303 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8304 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8305 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8306 | ||
c1fc2657 | 8307 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8308 | { |
c1fc2657 | 8309 | ~exec_catchpoint () override; |
b4d90040 PA |
8310 | |
8311 | /* Filename of a program whose exec triggered this catchpoint. | |
8312 | This field is only valid immediately after this catchpoint has | |
8313 | triggered. */ | |
8314 | char *exec_pathname; | |
8315 | }; | |
8316 | ||
c1fc2657 | 8317 | /* Exec catchpoint destructor. */ |
b4d90040 | 8318 | |
c1fc2657 | 8319 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8320 | { |
c1fc2657 | 8321 | xfree (this->exec_pathname); |
b4d90040 PA |
8322 | } |
8323 | ||
77b06cd7 TJB |
8324 | static int |
8325 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8326 | { |
dfd4cc63 | 8327 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8328 | } |
c906108c | 8329 | |
fe798b75 | 8330 | static int |
73971819 | 8331 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8332 | { |
dfd4cc63 | 8333 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8334 | } |
c906108c | 8335 | |
fe798b75 | 8336 | static int |
f1310107 | 8337 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8338 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8339 | const struct target_waitstatus *ws) |
fe798b75 | 8340 | { |
b4d90040 PA |
8341 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8342 | ||
f90263c1 TT |
8343 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8344 | return 0; | |
8345 | ||
8346 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8347 | return 1; | |
fe798b75 | 8348 | } |
c906108c | 8349 | |
fe798b75 | 8350 | static enum print_stop_action |
348d480f | 8351 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8352 | { |
36dfb11c | 8353 | struct ui_out *uiout = current_uiout; |
348d480f | 8354 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8355 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8356 | ||
fe798b75 | 8357 | annotate_catchpoint (b->number); |
f303dbd6 | 8358 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8359 | if (b->disposition == disp_del) |
112e8700 | 8360 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8361 | else |
112e8700 SM |
8362 | uiout->text ("Catchpoint "); |
8363 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8364 | { |
112e8700 SM |
8365 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8366 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8367 | } |
112e8700 SM |
8368 | uiout->field_int ("bkptno", b->number); |
8369 | uiout->text (" (exec'd "); | |
8370 | uiout->field_string ("new-exec", c->exec_pathname); | |
8371 | uiout->text ("), "); | |
36dfb11c | 8372 | |
fe798b75 | 8373 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8374 | } |
8375 | ||
fe798b75 | 8376 | static void |
a6d9a66e | 8377 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8378 | { |
b4d90040 | 8379 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8380 | struct value_print_options opts; |
79a45e25 | 8381 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8382 | |
8383 | get_user_print_options (&opts); | |
8384 | ||
8385 | /* Field 4, the address, is omitted (which makes the columns | |
8386 | not line up too nicely with the headers, but the effect | |
8387 | is relatively readable). */ | |
8388 | if (opts.addressprint) | |
112e8700 | 8389 | uiout->field_skip ("addr"); |
fe798b75 | 8390 | annotate_field (5); |
112e8700 | 8391 | uiout->text ("exec"); |
b4d90040 | 8392 | if (c->exec_pathname != NULL) |
fe798b75 | 8393 | { |
112e8700 SM |
8394 | uiout->text (", program \""); |
8395 | uiout->field_string ("what", c->exec_pathname); | |
8396 | uiout->text ("\" "); | |
fe798b75 | 8397 | } |
8ac3646f | 8398 | |
112e8700 SM |
8399 | if (uiout->is_mi_like_p ()) |
8400 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8401 | } |
8402 | ||
8403 | static void | |
8404 | print_mention_catch_exec (struct breakpoint *b) | |
8405 | { | |
8406 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8407 | } | |
8408 | ||
6149aea9 PA |
8409 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8410 | catchpoints. */ | |
8411 | ||
8412 | static void | |
8413 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8414 | { | |
8415 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8416 | print_recreate_thread (b, fp); |
6149aea9 PA |
8417 | } |
8418 | ||
2060206e | 8419 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8420 | |
c906108c | 8421 | static int |
fba45db2 | 8422 | hw_breakpoint_used_count (void) |
c906108c | 8423 | { |
c906108c | 8424 | int i = 0; |
f1310107 TJB |
8425 | struct breakpoint *b; |
8426 | struct bp_location *bl; | |
c906108c SS |
8427 | |
8428 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8429 | { |
d6b74ac4 | 8430 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8431 | for (bl = b->loc; bl; bl = bl->next) |
8432 | { | |
8433 | /* Special types of hardware breakpoints may use more than | |
8434 | one register. */ | |
348d480f | 8435 | i += b->ops->resources_needed (bl); |
f1310107 | 8436 | } |
c5aa993b | 8437 | } |
c906108c SS |
8438 | |
8439 | return i; | |
8440 | } | |
8441 | ||
a1398e0c PA |
8442 | /* Returns the resources B would use if it were a hardware |
8443 | watchpoint. */ | |
8444 | ||
c906108c | 8445 | static int |
a1398e0c | 8446 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8447 | { |
c906108c | 8448 | int i = 0; |
e09342b5 | 8449 | struct bp_location *bl; |
c906108c | 8450 | |
a1398e0c PA |
8451 | if (!breakpoint_enabled (b)) |
8452 | return 0; | |
8453 | ||
8454 | for (bl = b->loc; bl; bl = bl->next) | |
8455 | { | |
8456 | /* Special types of hardware watchpoints may use more than | |
8457 | one register. */ | |
8458 | i += b->ops->resources_needed (bl); | |
8459 | } | |
8460 | ||
8461 | return i; | |
8462 | } | |
8463 | ||
8464 | /* Returns the sum the used resources of all hardware watchpoints of | |
8465 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8466 | the sum of the used resources of all hardware watchpoints of other | |
8467 | types _not_ TYPE. */ | |
8468 | ||
8469 | static int | |
8470 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8471 | enum bptype type, int *other_type_used) | |
8472 | { | |
8473 | int i = 0; | |
8474 | struct breakpoint *b; | |
8475 | ||
c906108c SS |
8476 | *other_type_used = 0; |
8477 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8478 | { |
a1398e0c PA |
8479 | if (b == except) |
8480 | continue; | |
e09342b5 TJB |
8481 | if (!breakpoint_enabled (b)) |
8482 | continue; | |
8483 | ||
a1398e0c PA |
8484 | if (b->type == type) |
8485 | i += hw_watchpoint_use_count (b); | |
8486 | else if (is_hardware_watchpoint (b)) | |
8487 | *other_type_used = 1; | |
e09342b5 TJB |
8488 | } |
8489 | ||
c906108c SS |
8490 | return i; |
8491 | } | |
8492 | ||
c906108c | 8493 | void |
fba45db2 | 8494 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8495 | { |
c5aa993b | 8496 | struct breakpoint *b; |
c906108c SS |
8497 | |
8498 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8499 | { |
cc60f2e3 | 8500 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8501 | { |
b5de0fa7 | 8502 | b->enable_state = bp_call_disabled; |
44702360 | 8503 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8504 | } |
8505 | } | |
c906108c SS |
8506 | } |
8507 | ||
8508 | void | |
fba45db2 | 8509 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8510 | { |
c5aa993b | 8511 | struct breakpoint *b; |
c906108c SS |
8512 | |
8513 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8514 | { |
cc60f2e3 | 8515 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8516 | { |
b5de0fa7 | 8517 | b->enable_state = bp_enabled; |
44702360 | 8518 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8519 | } |
8520 | } | |
c906108c SS |
8521 | } |
8522 | ||
8bea4e01 UW |
8523 | void |
8524 | disable_breakpoints_before_startup (void) | |
8525 | { | |
6c95b8df | 8526 | current_program_space->executing_startup = 1; |
44702360 | 8527 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8528 | } |
8529 | ||
8530 | void | |
8531 | enable_breakpoints_after_startup (void) | |
8532 | { | |
6c95b8df | 8533 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8534 | breakpoint_re_set (); |
8bea4e01 UW |
8535 | } |
8536 | ||
7c16b83e PA |
8537 | /* Create a new single-step breakpoint for thread THREAD, with no |
8538 | locations. */ | |
c906108c | 8539 | |
7c16b83e PA |
8540 | static struct breakpoint * |
8541 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8542 | { | |
b270e6f9 | 8543 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8544 | |
b270e6f9 | 8545 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8546 | &momentary_breakpoint_ops); |
8547 | ||
8548 | b->disposition = disp_donttouch; | |
8549 | b->frame_id = null_frame_id; | |
8550 | ||
8551 | b->thread = thread; | |
8552 | gdb_assert (b->thread != 0); | |
8553 | ||
b270e6f9 | 8554 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8555 | } |
8556 | ||
8557 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8558 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8559 | frame. */ | |
c906108c | 8560 | |
454dafbd | 8561 | breakpoint_up |
a6d9a66e UW |
8562 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8563 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8564 | { |
52f0bd74 | 8565 | struct breakpoint *b; |
edb3359d | 8566 | |
193facb3 JK |
8567 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8568 | tail-called one. */ | |
8569 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8570 | |
06edf0c0 | 8571 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8572 | b->enable_state = bp_enabled; |
8573 | b->disposition = disp_donttouch; | |
818dd999 | 8574 | b->frame_id = frame_id; |
c906108c | 8575 | |
4a64f543 MS |
8576 | /* If we're debugging a multi-threaded program, then we want |
8577 | momentary breakpoints to be active in only a single thread of | |
8578 | control. */ | |
39f77062 | 8579 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8580 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8581 | |
44702360 | 8582 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8583 | |
454dafbd | 8584 | return breakpoint_up (b); |
c906108c | 8585 | } |
611c83ae | 8586 | |
06edf0c0 | 8587 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8588 | The new breakpoint will have type TYPE, use OPS as its |
8589 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8590 | |
06edf0c0 PA |
8591 | static struct breakpoint * |
8592 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8593 | enum bptype type, | |
a1aa2221 LM |
8594 | const struct breakpoint_ops *ops, |
8595 | int loc_enabled) | |
e58b0e63 PA |
8596 | { |
8597 | struct breakpoint *copy; | |
8598 | ||
06edf0c0 | 8599 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8600 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8601 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8602 | |
a6d9a66e | 8603 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8604 | copy->loc->requested_address = orig->loc->requested_address; |
8605 | copy->loc->address = orig->loc->address; | |
8606 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8607 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8608 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8609 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8610 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8611 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8612 | copy->frame_id = orig->frame_id; |
8613 | copy->thread = orig->thread; | |
6c95b8df | 8614 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8615 | |
8616 | copy->enable_state = bp_enabled; | |
8617 | copy->disposition = disp_donttouch; | |
8618 | copy->number = internal_breakpoint_number--; | |
8619 | ||
44702360 | 8620 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8621 | return copy; |
8622 | } | |
8623 | ||
06edf0c0 PA |
8624 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8625 | ORIG is NULL. */ | |
8626 | ||
8627 | struct breakpoint * | |
8628 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8629 | { | |
8630 | /* If there's nothing to clone, then return nothing. */ | |
8631 | if (orig == NULL) | |
8632 | return NULL; | |
8633 | ||
a1aa2221 | 8634 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8635 | } |
8636 | ||
454dafbd | 8637 | breakpoint_up |
a6d9a66e UW |
8638 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8639 | enum bptype type) | |
611c83ae PA |
8640 | { |
8641 | struct symtab_and_line sal; | |
8642 | ||
8643 | sal = find_pc_line (pc, 0); | |
8644 | sal.pc = pc; | |
8645 | sal.section = find_pc_overlay (pc); | |
8646 | sal.explicit_pc = 1; | |
8647 | ||
a6d9a66e | 8648 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8649 | } |
c906108c | 8650 | \f |
c5aa993b | 8651 | |
c906108c SS |
8652 | /* Tell the user we have just set a breakpoint B. */ |
8653 | ||
8654 | static void | |
fba45db2 | 8655 | mention (struct breakpoint *b) |
c906108c | 8656 | { |
348d480f | 8657 | b->ops->print_mention (b); |
112e8700 | 8658 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8659 | return; |
c906108c SS |
8660 | printf_filtered ("\n"); |
8661 | } | |
c906108c | 8662 | \f |
c5aa993b | 8663 | |
1a853c52 PA |
8664 | static int bp_loc_is_permanent (struct bp_location *loc); |
8665 | ||
0d381245 | 8666 | static struct bp_location * |
39d61571 | 8667 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8668 | const struct symtab_and_line *sal) |
8669 | { | |
8670 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8671 | CORE_ADDR adjusted_address; |
8672 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8673 | ||
8674 | if (loc_gdbarch == NULL) | |
8675 | loc_gdbarch = b->gdbarch; | |
8676 | ||
8677 | /* Adjust the breakpoint's address prior to allocating a location. | |
8678 | Once we call allocate_bp_location(), that mostly uninitialized | |
8679 | location will be placed on the location chain. Adjustment of the | |
8680 | breakpoint may cause target_read_memory() to be called and we do | |
8681 | not want its scan of the location chain to find a breakpoint and | |
8682 | location that's only been partially initialized. */ | |
8683 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8684 | sal->pc, b->type); | |
0d381245 | 8685 | |
d30113d4 | 8686 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8687 | loc = allocate_bp_location (b); |
d30113d4 JK |
8688 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8689 | tmp = &((*tmp)->next)) | |
0d381245 | 8690 | ; |
d30113d4 | 8691 | loc->next = *tmp; |
0d381245 | 8692 | *tmp = loc; |
3742cc8b | 8693 | |
0d381245 | 8694 | loc->requested_address = sal->pc; |
3742cc8b | 8695 | loc->address = adjusted_address; |
6c95b8df | 8696 | loc->pspace = sal->pspace; |
729662a5 TT |
8697 | loc->probe.probe = sal->probe; |
8698 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8699 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8700 | loc->section = sal->section; |
3742cc8b | 8701 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8702 | loc->line_number = sal->line; |
2f202fde | 8703 | loc->symtab = sal->symtab; |
4a27f119 | 8704 | loc->symbol = sal->symbol; |
f8eba3c6 | 8705 | |
0e30163f JK |
8706 | set_breakpoint_location_function (loc, |
8707 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8708 | |
6ae88661 LM |
8709 | /* While by definition, permanent breakpoints are already present in the |
8710 | code, we don't mark the location as inserted. Normally one would expect | |
8711 | that GDB could rely on that breakpoint instruction to stop the program, | |
8712 | thus removing the need to insert its own breakpoint, except that executing | |
8713 | the breakpoint instruction can kill the target instead of reporting a | |
8714 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8715 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8716 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8717 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8718 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8719 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8720 | it manually increments the PC, thus avoiding executing the breakpoint | |
8721 | instruction.) */ | |
1a853c52 | 8722 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8723 | loc->permanent = 1; |
1a853c52 | 8724 | |
0d381245 VP |
8725 | return loc; |
8726 | } | |
514f746b AR |
8727 | \f |
8728 | ||
1cf4d951 | 8729 | /* See breakpoint.h. */ |
514f746b | 8730 | |
1cf4d951 PA |
8731 | int |
8732 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8733 | { |
8734 | int len; | |
8735 | CORE_ADDR addr; | |
1afeeb75 | 8736 | const gdb_byte *bpoint; |
514f746b AR |
8737 | gdb_byte *target_mem; |
8738 | ||
1cf4d951 PA |
8739 | addr = address; |
8740 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8741 | ||
8742 | /* Software breakpoints unsupported? */ | |
8743 | if (bpoint == NULL) | |
8744 | return 0; | |
8745 | ||
224c3ddb | 8746 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8747 | |
8748 | /* Enable the automatic memory restoration from breakpoints while | |
8749 | we read the memory. Otherwise we could say about our temporary | |
8750 | breakpoints they are permanent. */ | |
cb85b21b TT |
8751 | scoped_restore restore_memory |
8752 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8753 | |
8754 | if (target_read_memory (address, target_mem, len) == 0 | |
8755 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8756 | return 1; |
1cf4d951 | 8757 | |
cb85b21b | 8758 | return 0; |
1cf4d951 PA |
8759 | } |
8760 | ||
8761 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8762 | return 0 otherwise. */ | |
8763 | ||
8764 | static int | |
8765 | bp_loc_is_permanent (struct bp_location *loc) | |
8766 | { | |
514f746b AR |
8767 | gdb_assert (loc != NULL); |
8768 | ||
244558af LM |
8769 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8770 | attempt to read from the addresses the locations of these breakpoint types | |
8771 | point to. program_breakpoint_here_p, below, will attempt to read | |
8772 | memory. */ | |
8773 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8774 | return 0; | |
8775 | ||
5ed8105e | 8776 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8777 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8778 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8779 | } |
8780 | ||
e7e0cddf SS |
8781 | /* Build a command list for the dprintf corresponding to the current |
8782 | settings of the dprintf style options. */ | |
8783 | ||
8784 | static void | |
8785 | update_dprintf_command_list (struct breakpoint *b) | |
8786 | { | |
8787 | char *dprintf_args = b->extra_string; | |
8788 | char *printf_line = NULL; | |
8789 | ||
8790 | if (!dprintf_args) | |
8791 | return; | |
8792 | ||
8793 | dprintf_args = skip_spaces (dprintf_args); | |
8794 | ||
8795 | /* Allow a comma, as it may have terminated a location, but don't | |
8796 | insist on it. */ | |
8797 | if (*dprintf_args == ',') | |
8798 | ++dprintf_args; | |
8799 | dprintf_args = skip_spaces (dprintf_args); | |
8800 | ||
8801 | if (*dprintf_args != '"') | |
8802 | error (_("Bad format string, missing '\"'.")); | |
8803 | ||
d3ce09f5 | 8804 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8805 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8806 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8807 | { |
8808 | if (!dprintf_function) | |
8809 | error (_("No function supplied for dprintf call")); | |
8810 | ||
8811 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8812 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8813 | dprintf_function, | |
8814 | dprintf_channel, | |
8815 | dprintf_args); | |
8816 | else | |
8817 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8818 | dprintf_function, | |
8819 | dprintf_args); | |
8820 | } | |
d3ce09f5 SS |
8821 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8822 | { | |
8823 | if (target_can_run_breakpoint_commands ()) | |
8824 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8825 | else | |
8826 | { | |
8827 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8828 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8829 | } | |
8830 | } | |
e7e0cddf SS |
8831 | else |
8832 | internal_error (__FILE__, __LINE__, | |
8833 | _("Invalid dprintf style.")); | |
8834 | ||
f28045c2 | 8835 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8836 | /* Manufacture a printf sequence. */ |
f28045c2 | 8837 | { |
8d749320 | 8838 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8839 | |
f28045c2 YQ |
8840 | printf_cmd_line->control_type = simple_control; |
8841 | printf_cmd_line->body_count = 0; | |
8842 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8843 | printf_cmd_line->next = NULL; |
f28045c2 | 8844 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8845 | |
93921405 | 8846 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8847 | } |
e7e0cddf SS |
8848 | } |
8849 | ||
8850 | /* Update all dprintf commands, making their command lists reflect | |
8851 | current style settings. */ | |
8852 | ||
8853 | static void | |
eb4c3f4a | 8854 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8855 | struct cmd_list_element *c) |
8856 | { | |
8857 | struct breakpoint *b; | |
8858 | ||
8859 | ALL_BREAKPOINTS (b) | |
8860 | { | |
8861 | if (b->type == bp_dprintf) | |
8862 | update_dprintf_command_list (b); | |
8863 | } | |
8864 | } | |
c3f6f71d | 8865 | |
f00aae0f KS |
8866 | /* Create a breakpoint with SAL as location. Use LOCATION |
8867 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8868 | as condition expression. If LOCATION is NULL then create an |
8869 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8870 | |
8871 | static void | |
d9b3f62e | 8872 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8873 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8874 | event_location_up &&location, |
e1e01040 PA |
8875 | gdb::unique_xmalloc_ptr<char> filter, |
8876 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8877 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8878 | enum bptype type, enum bpdisp disposition, |
8879 | int thread, int task, int ignore_count, | |
c0a91b2b | 8880 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8881 | int enabled, int internal, unsigned flags, |
8882 | int display_canonical) | |
018d34a4 | 8883 | { |
0d381245 | 8884 | int i; |
018d34a4 VP |
8885 | |
8886 | if (type == bp_hardware_breakpoint) | |
8887 | { | |
fbbd034e AS |
8888 | int target_resources_ok; |
8889 | ||
8890 | i = hw_breakpoint_used_count (); | |
8891 | target_resources_ok = | |
8892 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8893 | i + 1, 0); |
8894 | if (target_resources_ok == 0) | |
8895 | error (_("No hardware breakpoint support in the target.")); | |
8896 | else if (target_resources_ok < 0) | |
8897 | error (_("Hardware breakpoints used exceeds limit.")); | |
8898 | } | |
8899 | ||
6c5b2ebe | 8900 | gdb_assert (!sals.empty ()); |
6c95b8df | 8901 | |
6c5b2ebe | 8902 | for (const auto &sal : sals) |
0d381245 | 8903 | { |
0d381245 VP |
8904 | struct bp_location *loc; |
8905 | ||
8906 | if (from_tty) | |
5af949e3 UW |
8907 | { |
8908 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8909 | if (!loc_gdbarch) | |
8910 | loc_gdbarch = gdbarch; | |
8911 | ||
8912 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8913 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8914 | } |
0d381245 | 8915 | |
6c5b2ebe | 8916 | if (&sal == &sals[0]) |
0d381245 | 8917 | { |
d9b3f62e | 8918 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8919 | b->thread = thread; |
4a306c9a | 8920 | b->task = task; |
855a6e68 | 8921 | |
e1e01040 PA |
8922 | b->cond_string = cond_string.release (); |
8923 | b->extra_string = extra_string.release (); | |
0d381245 | 8924 | b->ignore_count = ignore_count; |
41447f92 | 8925 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8926 | b->disposition = disposition; |
6c95b8df | 8927 | |
44f238bb PA |
8928 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8929 | b->loc->inserted = 1; | |
8930 | ||
0fb4aa4b PA |
8931 | if (type == bp_static_tracepoint) |
8932 | { | |
d9b3f62e | 8933 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8934 | struct static_tracepoint_marker marker; |
8935 | ||
983af33b | 8936 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8937 | { |
8938 | /* We already know the marker exists, otherwise, we | |
8939 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8940 | const char *p |
8941 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8942 | const char *endp; |
0fb4aa4b | 8943 | char *marker_str; |
0fb4aa4b | 8944 | |
f1735a53 | 8945 | p = skip_spaces (p); |
0fb4aa4b | 8946 | |
f1735a53 | 8947 | endp = skip_to_space (p); |
0fb4aa4b PA |
8948 | |
8949 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8950 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8951 | |
3e43a32a MS |
8952 | printf_filtered (_("Probed static tracepoint " |
8953 | "marker \"%s\"\n"), | |
d9b3f62e | 8954 | t->static_trace_marker_id); |
0fb4aa4b PA |
8955 | } |
8956 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8957 | { | |
d9b3f62e | 8958 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8959 | release_static_tracepoint_marker (&marker); |
8960 | ||
3e43a32a MS |
8961 | printf_filtered (_("Probed static tracepoint " |
8962 | "marker \"%s\"\n"), | |
d9b3f62e | 8963 | t->static_trace_marker_id); |
0fb4aa4b PA |
8964 | } |
8965 | else | |
3e43a32a MS |
8966 | warning (_("Couldn't determine the static " |
8967 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8968 | } |
8969 | ||
0d381245 VP |
8970 | loc = b->loc; |
8971 | } | |
8972 | else | |
018d34a4 | 8973 | { |
39d61571 | 8974 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8975 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8976 | loc->inserted = 1; | |
0d381245 VP |
8977 | } |
8978 | ||
8979 | if (b->cond_string) | |
8980 | { | |
bbc13ae3 KS |
8981 | const char *arg = b->cond_string; |
8982 | ||
1bb9788d TT |
8983 | loc->cond = parse_exp_1 (&arg, loc->address, |
8984 | block_for_pc (loc->address), 0); | |
0d381245 | 8985 | if (*arg) |
588ae58c | 8986 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8987 | } |
e7e0cddf SS |
8988 | |
8989 | /* Dynamic printf requires and uses additional arguments on the | |
8990 | command line, otherwise it's an error. */ | |
8991 | if (type == bp_dprintf) | |
8992 | { | |
8993 | if (b->extra_string) | |
8994 | update_dprintf_command_list (b); | |
8995 | else | |
8996 | error (_("Format string required")); | |
8997 | } | |
8998 | else if (b->extra_string) | |
588ae58c | 8999 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9000 | } |
018d34a4 | 9001 | |
56435ebe | 9002 | b->display_canonical = display_canonical; |
f00aae0f | 9003 | if (location != NULL) |
d28cd78a | 9004 | b->location = std::move (location); |
018d34a4 | 9005 | else |
d28cd78a | 9006 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 9007 | b->filter = filter.release (); |
d9b3f62e | 9008 | } |
018d34a4 | 9009 | |
d9b3f62e PA |
9010 | static void |
9011 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 9012 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9013 | event_location_up &&location, |
e1e01040 PA |
9014 | gdb::unique_xmalloc_ptr<char> filter, |
9015 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9016 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9017 | enum bptype type, enum bpdisp disposition, |
9018 | int thread, int task, int ignore_count, | |
c0a91b2b | 9019 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9020 | int enabled, int internal, unsigned flags, |
9021 | int display_canonical) | |
d9b3f62e | 9022 | { |
a5e364af | 9023 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9024 | |
a5e364af | 9025 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9026 | sals, std::move (location), |
e1e01040 PA |
9027 | std::move (filter), |
9028 | std::move (cond_string), | |
9029 | std::move (extra_string), | |
d9b3f62e PA |
9030 | type, disposition, |
9031 | thread, task, ignore_count, | |
9032 | ops, from_tty, | |
44f238bb PA |
9033 | enabled, internal, flags, |
9034 | display_canonical); | |
d9b3f62e | 9035 | |
b270e6f9 | 9036 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9037 | } |
9038 | ||
9039 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9040 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9041 | value. COND_STRING, if not NULL, specified the condition to be | |
9042 | used for all breakpoints. Essentially the only case where | |
9043 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9044 | function. In that case, it's still not possible to specify | |
9045 | separate conditions for different overloaded functions, so | |
9046 | we take just a single condition string. | |
9047 | ||
c3f6f71d | 9048 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9049 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9050 | array contents). If the function fails (error() is called), the |
9051 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9052 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9053 | |
9054 | static void | |
8cdf0e15 | 9055 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9056 | struct linespec_result *canonical, |
e1e01040 PA |
9057 | gdb::unique_xmalloc_ptr<char> cond_string, |
9058 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9059 | enum bptype type, enum bpdisp disposition, |
9060 | int thread, int task, int ignore_count, | |
c0a91b2b | 9061 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9062 | int enabled, int internal, unsigned flags) |
c906108c | 9063 | { |
f8eba3c6 | 9064 | if (canonical->pre_expanded) |
6c5b2ebe | 9065 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9066 | |
6c5b2ebe | 9067 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9068 | { |
f00aae0f | 9069 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9070 | 'break', without arguments. */ |
ffc2605c | 9071 | event_location_up location |
f00aae0f | 9072 | = (canonical->location != NULL |
8e9e35b1 | 9073 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9074 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9075 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9076 | |
6c5b2ebe | 9077 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9078 | std::move (location), |
e1e01040 PA |
9079 | std::move (filter_string), |
9080 | std::move (cond_string), | |
9081 | std::move (extra_string), | |
e7e0cddf | 9082 | type, disposition, |
84f4c1fe | 9083 | thread, task, ignore_count, ops, |
44f238bb | 9084 | from_tty, enabled, internal, flags, |
56435ebe | 9085 | canonical->special_display); |
c3f6f71d | 9086 | } |
c3f6f71d | 9087 | } |
c906108c | 9088 | |
f00aae0f | 9089 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9090 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9091 | addresses found. LOCATION points to the end of the SAL (for |
9092 | linespec locations). | |
9998af43 TJB |
9093 | |
9094 | The array and the line spec strings are allocated on the heap, it is | |
9095 | the caller's responsibility to free them. */ | |
c906108c | 9096 | |
b9362cc7 | 9097 | static void |
f00aae0f | 9098 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9099 | struct linespec_result *canonical) |
c3f6f71d | 9100 | { |
f00aae0f KS |
9101 | struct symtab_and_line cursal; |
9102 | ||
9103 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9104 | { | |
9105 | const char *address = get_linespec_location (location); | |
9106 | ||
9107 | if (address == NULL) | |
9108 | { | |
9109 | /* The last displayed codepoint, if it's valid, is our default | |
9110 | breakpoint address. */ | |
9111 | if (last_displayed_sal_is_valid ()) | |
9112 | { | |
f00aae0f KS |
9113 | /* Set sal's pspace, pc, symtab, and line to the values |
9114 | corresponding to the last call to print_frame_info. | |
9115 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9116 | as the breakpoint line number is inappropriate otherwise. | |
9117 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9118 | symtab_and_line sal = get_last_displayed_sal (); |
9119 | CORE_ADDR pc = sal.pc; | |
9120 | ||
f00aae0f KS |
9121 | sal = find_pc_line (pc, 0); |
9122 | ||
9123 | /* "break" without arguments is equivalent to "break *PC" | |
9124 | where PC is the last displayed codepoint's address. So | |
9125 | make sure to set sal.explicit_pc to prevent GDB from | |
9126 | trying to expand the list of sals to include all other | |
9127 | instances with the same symtab and line. */ | |
9128 | sal.pc = pc; | |
9129 | sal.explicit_pc = 1; | |
9130 | ||
6c5b2ebe PA |
9131 | struct linespec_sals lsal; |
9132 | lsal.sals = {sal}; | |
f00aae0f KS |
9133 | lsal.canonical = NULL; |
9134 | ||
6c5b2ebe | 9135 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9136 | return; |
9137 | } | |
9138 | else | |
9139 | error (_("No default breakpoint address now.")); | |
c906108c | 9140 | } |
c906108c | 9141 | } |
f00aae0f KS |
9142 | |
9143 | /* Force almost all breakpoints to be in terms of the | |
9144 | current_source_symtab (which is decode_line_1's default). | |
9145 | This should produce the results we want almost all of the | |
9146 | time while leaving default_breakpoint_* alone. | |
9147 | ||
9148 | ObjC: However, don't match an Objective-C method name which | |
9149 | may have a '+' or '-' succeeded by a '['. */ | |
9150 | cursal = get_current_source_symtab_and_line (); | |
9151 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9152 | { |
f00aae0f | 9153 | const char *address = NULL; |
cc80f267 | 9154 | |
f00aae0f KS |
9155 | if (event_location_type (location) == LINESPEC_LOCATION) |
9156 | address = get_linespec_location (location); | |
cc80f267 | 9157 | |
f00aae0f KS |
9158 | if (!cursal.symtab |
9159 | || (address != NULL | |
9160 | && strchr ("+-", address[0]) != NULL | |
9161 | && address[1] != '[')) | |
9162 | { | |
c2f4122d | 9163 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9164 | get_last_displayed_symtab (), |
9165 | get_last_displayed_line (), | |
9166 | canonical, NULL, NULL); | |
9167 | return; | |
9168 | } | |
c906108c | 9169 | } |
f00aae0f | 9170 | |
c2f4122d | 9171 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9172 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9173 | } |
c906108c | 9174 | |
c906108c | 9175 | |
c3f6f71d | 9176 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9177 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9178 | |
b9362cc7 | 9179 | static void |
6c5b2ebe | 9180 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9181 | { |
6c5b2ebe PA |
9182 | for (auto &sal : sals) |
9183 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9184 | } |
9185 | ||
7a697b8d SS |
9186 | /* Fast tracepoints may have restrictions on valid locations. For |
9187 | instance, a fast tracepoint using a jump instead of a trap will | |
9188 | likely have to overwrite more bytes than a trap would, and so can | |
9189 | only be placed where the instruction is longer than the jump, or a | |
9190 | multi-instruction sequence does not have a jump into the middle of | |
9191 | it, etc. */ | |
9192 | ||
9193 | static void | |
9194 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9195 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9196 | { |
6c5b2ebe | 9197 | int rslt; |
7a697b8d SS |
9198 | char *msg; |
9199 | struct cleanup *old_chain; | |
9200 | ||
6c5b2ebe | 9201 | for (const auto &sal : sals) |
7a697b8d | 9202 | { |
f8eba3c6 TT |
9203 | struct gdbarch *sarch; |
9204 | ||
6c5b2ebe | 9205 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9206 | /* We fall back to GDBARCH if there is no architecture |
9207 | associated with SAL. */ | |
9208 | if (sarch == NULL) | |
9209 | sarch = gdbarch; | |
6c5b2ebe | 9210 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9211 | old_chain = make_cleanup (xfree, msg); |
9212 | ||
9213 | if (!rslt) | |
53c3572a | 9214 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9215 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9216 | |
9217 | do_cleanups (old_chain); | |
9218 | } | |
9219 | } | |
9220 | ||
018d34a4 VP |
9221 | /* Given TOK, a string specification of condition and thread, as |
9222 | accepted by the 'break' command, extract the condition | |
9223 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9224 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9225 | If no condition is found, *COND_STRING is set to NULL. |
9226 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9227 | |
9228 | static void | |
bbc13ae3 | 9229 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9230 | char **cond_string, int *thread, int *task, |
9231 | char **rest) | |
018d34a4 VP |
9232 | { |
9233 | *cond_string = NULL; | |
9234 | *thread = -1; | |
ed1d1739 KS |
9235 | *task = 0; |
9236 | *rest = NULL; | |
9237 | ||
018d34a4 VP |
9238 | while (tok && *tok) |
9239 | { | |
bbc13ae3 | 9240 | const char *end_tok; |
018d34a4 | 9241 | int toklen; |
bbc13ae3 KS |
9242 | const char *cond_start = NULL; |
9243 | const char *cond_end = NULL; | |
cc59ec59 | 9244 | |
f1735a53 | 9245 | tok = skip_spaces (tok); |
e7e0cddf SS |
9246 | |
9247 | if ((*tok == '"' || *tok == ',') && rest) | |
9248 | { | |
9249 | *rest = savestring (tok, strlen (tok)); | |
9250 | return; | |
9251 | } | |
9252 | ||
f1735a53 | 9253 | end_tok = skip_to_space (tok); |
d634f2de | 9254 | |
018d34a4 | 9255 | toklen = end_tok - tok; |
d634f2de | 9256 | |
018d34a4 VP |
9257 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9258 | { | |
9259 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9260 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9261 | cond_end = tok; |
d634f2de | 9262 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9263 | } |
9264 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9265 | { | |
5d5658a1 PA |
9266 | const char *tmptok; |
9267 | struct thread_info *thr; | |
d634f2de | 9268 | |
018d34a4 | 9269 | tok = end_tok + 1; |
5d5658a1 | 9270 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9271 | if (tok == tmptok) |
9272 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9273 | *thread = thr->global_num; |
bbc13ae3 | 9274 | tok = tmptok; |
018d34a4 | 9275 | } |
4a306c9a JB |
9276 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9277 | { | |
9278 | char *tmptok; | |
9279 | ||
9280 | tok = end_tok + 1; | |
bbc13ae3 | 9281 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9282 | if (tok == tmptok) |
9283 | error (_("Junk after task keyword.")); | |
9284 | if (!valid_task_id (*task)) | |
b6199126 | 9285 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9286 | tok = tmptok; |
4a306c9a | 9287 | } |
e7e0cddf SS |
9288 | else if (rest) |
9289 | { | |
9290 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9291 | return; |
e7e0cddf | 9292 | } |
018d34a4 VP |
9293 | else |
9294 | error (_("Junk at end of arguments.")); | |
9295 | } | |
9296 | } | |
9297 | ||
0fb4aa4b PA |
9298 | /* Decode a static tracepoint marker spec. */ |
9299 | ||
6c5b2ebe | 9300 | static std::vector<symtab_and_line> |
f00aae0f | 9301 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9302 | { |
9303 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
f00aae0f KS |
9304 | const char *p = &(*arg_p)[3]; |
9305 | const char *endp; | |
0fb4aa4b PA |
9306 | int i; |
9307 | ||
f1735a53 | 9308 | p = skip_spaces (p); |
0fb4aa4b | 9309 | |
f1735a53 | 9310 | endp = skip_to_space (p); |
0fb4aa4b | 9311 | |
81b1e71c | 9312 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9313 | |
81b1e71c | 9314 | markers = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); |
0fb4aa4b | 9315 | if (VEC_empty(static_tracepoint_marker_p, markers)) |
81b1e71c TT |
9316 | error (_("No known static tracepoint marker named %s"), |
9317 | marker_str.c_str ()); | |
0fb4aa4b | 9318 | |
6c5b2ebe PA |
9319 | std::vector<symtab_and_line> sals; |
9320 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9321 | |
6c5b2ebe | 9322 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9323 | { |
9324 | struct static_tracepoint_marker *marker; | |
9325 | ||
9326 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9327 | ||
51abb421 | 9328 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9329 | sal.pc = marker->address; |
9330 | sals.push_back (sal); | |
0fb4aa4b PA |
9331 | |
9332 | release_static_tracepoint_marker (marker); | |
9333 | } | |
9334 | ||
0fb4aa4b PA |
9335 | *arg_p = endp; |
9336 | return sals; | |
9337 | } | |
9338 | ||
f00aae0f | 9339 | /* See breakpoint.h. */ |
0101ce28 | 9340 | |
8cdf0e15 VP |
9341 | int |
9342 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9343 | const struct event_location *location, |
9344 | const char *cond_string, | |
9345 | int thread, const char *extra_string, | |
f00aae0f | 9346 | int parse_extra, |
0fb4aa4b | 9347 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9348 | int ignore_count, |
9349 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9350 | const struct breakpoint_ops *ops, |
44f238bb PA |
9351 | int from_tty, int enabled, int internal, |
9352 | unsigned flags) | |
c3f6f71d | 9353 | { |
7efd8fc2 | 9354 | struct linespec_result canonical; |
80c99de1 | 9355 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9356 | int pending = 0; |
4a306c9a | 9357 | int task = 0; |
86b17b60 | 9358 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9359 | |
348d480f PA |
9360 | gdb_assert (ops != NULL); |
9361 | ||
f00aae0f KS |
9362 | /* If extra_string isn't useful, set it to NULL. */ |
9363 | if (extra_string != NULL && *extra_string == '\0') | |
9364 | extra_string = NULL; | |
9365 | ||
492d29ea | 9366 | TRY |
b78a6381 | 9367 | { |
f00aae0f | 9368 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9369 | } |
492d29ea | 9370 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9371 | { |
492d29ea PA |
9372 | /* If caller is interested in rc value from parse, set |
9373 | value. */ | |
9374 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9375 | { |
05ff989b AC |
9376 | /* If pending breakpoint support is turned off, throw |
9377 | error. */ | |
fa8d40ab JJ |
9378 | |
9379 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9380 | throw_exception (e); |
9381 | ||
9382 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9383 | |
05ff989b AC |
9384 | /* If pending breakpoint support is auto query and the user |
9385 | selects no, then simply return the error code. */ | |
059fb39f | 9386 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9387 | && !nquery (_("Make %s pending on future shared library load? "), |
9388 | bptype_string (type_wanted))) | |
fd9b8c24 | 9389 | return 0; |
fa8d40ab | 9390 | |
05ff989b AC |
9391 | /* At this point, either the user was queried about setting |
9392 | a pending breakpoint and selected yes, or pending | |
9393 | breakpoint behavior is on and thus a pending breakpoint | |
9394 | is defaulted on behalf of the user. */ | |
f00aae0f | 9395 | pending = 1; |
0101ce28 | 9396 | } |
492d29ea PA |
9397 | else |
9398 | throw_exception (e); | |
0101ce28 | 9399 | } |
492d29ea PA |
9400 | END_CATCH |
9401 | ||
6c5b2ebe | 9402 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9403 | return 0; |
c3f6f71d | 9404 | |
c3f6f71d JM |
9405 | /* ----------------------------- SNIP ----------------------------- |
9406 | Anything added to the cleanup chain beyond this point is assumed | |
9407 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9408 | then the memory is not reclaimed. */ |
9409 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9410 | |
c3f6f71d JM |
9411 | /* Resolve all line numbers to PC's and verify that the addresses |
9412 | are ok for the target. */ | |
0101ce28 | 9413 | if (!pending) |
f8eba3c6 | 9414 | { |
6c5b2ebe PA |
9415 | for (auto &lsal : canonical.lsals) |
9416 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9417 | } |
c3f6f71d | 9418 | |
7a697b8d | 9419 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9420 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9421 | { |
6c5b2ebe PA |
9422 | for (const auto &lsal : canonical.lsals) |
9423 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9424 | } |
7a697b8d | 9425 | |
c3f6f71d JM |
9426 | /* Verify that condition can be parsed, before setting any |
9427 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9428 | breakpoint. */ |
0101ce28 | 9429 | if (!pending) |
c3f6f71d | 9430 | { |
e1e01040 PA |
9431 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9432 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9433 | ||
f00aae0f | 9434 | if (parse_extra) |
72b2ff0e | 9435 | { |
0878d0fa | 9436 | char *rest; |
e1e01040 | 9437 | char *cond; |
52d361e1 | 9438 | |
6c5b2ebe | 9439 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9440 | |
0878d0fa YQ |
9441 | /* Here we only parse 'arg' to separate condition |
9442 | from thread number, so parsing in context of first | |
9443 | sal is OK. When setting the breakpoint we'll | |
9444 | re-parse it in context of each sal. */ | |
9445 | ||
6c5b2ebe | 9446 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9447 | &cond, &thread, &task, &rest); |
9448 | cond_string_copy.reset (cond); | |
9449 | extra_string_copy.reset (rest); | |
72b2ff0e | 9450 | } |
2f069f6f | 9451 | else |
72b2ff0e | 9452 | { |
f00aae0f KS |
9453 | if (type_wanted != bp_dprintf |
9454 | && extra_string != NULL && *extra_string != '\0') | |
9455 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9456 | |
9457 | /* Create a private copy of condition string. */ | |
9458 | if (cond_string) | |
e1e01040 | 9459 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9460 | /* Create a private copy of any extra string. */ |
9461 | if (extra_string) | |
e1e01040 | 9462 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9463 | } |
0fb4aa4b | 9464 | |
52d361e1 | 9465 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9466 | std::move (cond_string_copy), |
9467 | std::move (extra_string_copy), | |
9468 | type_wanted, | |
d9b3f62e PA |
9469 | tempflag ? disp_del : disp_donttouch, |
9470 | thread, task, ignore_count, ops, | |
44f238bb | 9471 | from_tty, enabled, internal, flags); |
c906108c | 9472 | } |
0101ce28 JJ |
9473 | else |
9474 | { | |
a5e364af | 9475 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9476 | |
a5e364af | 9477 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9478 | b->location = copy_event_location (location); |
bfccc43c | 9479 | |
f00aae0f KS |
9480 | if (parse_extra) |
9481 | b->cond_string = NULL; | |
e12c7713 MK |
9482 | else |
9483 | { | |
9484 | /* Create a private copy of condition string. */ | |
e1e01040 | 9485 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9486 | b->thread = thread; |
e12c7713 | 9487 | } |
f00aae0f KS |
9488 | |
9489 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9490 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9491 | b->ignore_count = ignore_count; |
0101ce28 | 9492 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9493 | b->condition_not_parsed = 1; |
41447f92 | 9494 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9495 | if ((type_wanted != bp_breakpoint |
9496 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9497 | b->pspace = current_program_space; |
8bea4e01 | 9498 | |
b270e6f9 | 9499 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9500 | } |
9501 | ||
6c5b2ebe | 9502 | if (canonical.lsals.size () > 1) |
95a42b64 | 9503 | { |
3e43a32a MS |
9504 | warning (_("Multiple breakpoints were set.\nUse the " |
9505 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9506 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9507 | } |
9508 | ||
80c99de1 PA |
9509 | /* That's it. Discard the cleanups for data inserted into the |
9510 | breakpoint. */ | |
9511 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9512 | |
80c99de1 | 9513 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9514 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9515 | |
9516 | return 1; | |
c3f6f71d | 9517 | } |
c906108c | 9518 | |
348d480f | 9519 | /* Set a breakpoint. |
72b2ff0e VP |
9520 | ARG is a string describing breakpoint address, |
9521 | condition, and thread. | |
9522 | FLAG specifies if a breakpoint is hardware on, | |
9523 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9524 | and BP_TEMPFLAG. */ | |
348d480f | 9525 | |
98deb0da | 9526 | static void |
f2fc3015 | 9527 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9528 | { |
72b2ff0e | 9529 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9530 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9531 | ? bp_hardware_breakpoint | |
9532 | : bp_breakpoint); | |
55aa24fb | 9533 | struct breakpoint_ops *ops; |
f00aae0f | 9534 | |
ffc2605c | 9535 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9536 | |
9537 | /* Matching breakpoints on probes. */ | |
5b56227b | 9538 | if (location != NULL |
ffc2605c | 9539 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9540 | ops = &bkpt_probe_breakpoint_ops; |
9541 | else | |
9542 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9543 | |
8cdf0e15 | 9544 | create_breakpoint (get_current_arch (), |
ffc2605c | 9545 | location.get (), |
f00aae0f | 9546 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9547 | tempflag, type_wanted, |
8cdf0e15 VP |
9548 | 0 /* Ignore count */, |
9549 | pending_break_support, | |
55aa24fb | 9550 | ops, |
8cdf0e15 | 9551 | from_tty, |
84f4c1fe | 9552 | 1 /* enabled */, |
44f238bb PA |
9553 | 0 /* internal */, |
9554 | 0); | |
c906108c SS |
9555 | } |
9556 | ||
c906108c SS |
9557 | /* Helper function for break_command_1 and disassemble_command. */ |
9558 | ||
9559 | void | |
fba45db2 | 9560 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9561 | { |
9562 | CORE_ADDR pc; | |
9563 | ||
9564 | if (sal->pc == 0 && sal->symtab != NULL) | |
9565 | { | |
9566 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9567 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9568 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9569 | sal->pc = pc; |
6a048695 | 9570 | |
4a64f543 MS |
9571 | /* If this SAL corresponds to a breakpoint inserted using a line |
9572 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9573 | if (sal->explicit_line) |
059acae7 | 9574 | skip_prologue_sal (sal); |
c906108c SS |
9575 | } |
9576 | ||
9577 | if (sal->section == 0 && sal->symtab != NULL) | |
9578 | { | |
346d1dfe | 9579 | const struct blockvector *bv; |
3977b71f | 9580 | const struct block *b; |
c5aa993b | 9581 | struct symbol *sym; |
c906108c | 9582 | |
43f3e411 DE |
9583 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9584 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9585 | if (bv != NULL) |
9586 | { | |
7f0df278 | 9587 | sym = block_linkage_function (b); |
c906108c SS |
9588 | if (sym != NULL) |
9589 | { | |
eb822aa6 DE |
9590 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9591 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9592 | sym); | |
c906108c SS |
9593 | } |
9594 | else | |
9595 | { | |
4a64f543 MS |
9596 | /* It really is worthwhile to have the section, so we'll |
9597 | just have to look harder. This case can be executed | |
9598 | if we have line numbers but no functions (as can | |
9599 | happen in assembly source). */ | |
c906108c | 9600 | |
5ed8105e | 9601 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9602 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9603 | |
5ed8105e | 9604 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9605 | if (msym.minsym) |
efd66ac6 | 9606 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9607 | } |
9608 | } | |
9609 | } | |
9610 | } | |
9611 | ||
9612 | void | |
0b39b52e | 9613 | break_command (const char *arg, int from_tty) |
c906108c | 9614 | { |
db107f19 | 9615 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9616 | } |
9617 | ||
c906108c | 9618 | void |
0b39b52e | 9619 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9620 | { |
db107f19 | 9621 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9622 | } |
9623 | ||
c906108c | 9624 | static void |
0b39b52e | 9625 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9626 | { |
db107f19 | 9627 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9628 | } |
9629 | ||
9630 | static void | |
0b39b52e | 9631 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9632 | { |
db107f19 | 9633 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9634 | } |
9635 | ||
9636 | static void | |
ee7ddd71 | 9637 | stop_command (const char *arg, int from_tty) |
c906108c | 9638 | { |
a3f17187 | 9639 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9640 | Usage: stop in <function | address>\n\ |
a3f17187 | 9641 | stop at <line>\n")); |
c906108c SS |
9642 | } |
9643 | ||
9644 | static void | |
4495129a | 9645 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9646 | { |
9647 | int badInput = 0; | |
9648 | ||
c5aa993b | 9649 | if (arg == (char *) NULL) |
c906108c SS |
9650 | badInput = 1; |
9651 | else if (*arg != '*') | |
9652 | { | |
4495129a | 9653 | const char *argptr = arg; |
c906108c SS |
9654 | int hasColon = 0; |
9655 | ||
4a64f543 | 9656 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9657 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9658 | function/method name. */ |
c906108c | 9659 | while (*argptr && !hasColon) |
c5aa993b JM |
9660 | { |
9661 | hasColon = (*argptr == ':'); | |
9662 | argptr++; | |
9663 | } | |
c906108c SS |
9664 | |
9665 | if (hasColon) | |
c5aa993b | 9666 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9667 | else |
c5aa993b | 9668 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9669 | } |
9670 | ||
9671 | if (badInput) | |
a3f17187 | 9672 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9673 | else |
db107f19 | 9674 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9675 | } |
9676 | ||
9677 | static void | |
4495129a | 9678 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9679 | { |
9680 | int badInput = 0; | |
9681 | ||
c5aa993b | 9682 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9683 | badInput = 1; |
9684 | else | |
9685 | { | |
4495129a | 9686 | const char *argptr = arg; |
c906108c SS |
9687 | int hasColon = 0; |
9688 | ||
4a64f543 MS |
9689 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9690 | it is probably a line number. */ | |
c906108c | 9691 | while (*argptr && !hasColon) |
c5aa993b JM |
9692 | { |
9693 | hasColon = (*argptr == ':'); | |
9694 | argptr++; | |
9695 | } | |
c906108c SS |
9696 | |
9697 | if (hasColon) | |
c5aa993b | 9698 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9699 | else |
c5aa993b | 9700 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9701 | } |
9702 | ||
9703 | if (badInput) | |
a3f17187 | 9704 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9705 | else |
db107f19 | 9706 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9707 | } |
9708 | ||
e7e0cddf SS |
9709 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9710 | with a prewired command list consisting of a single output command, | |
9711 | built from extra arguments supplied on the dprintf command | |
9712 | line. */ | |
9713 | ||
da821c7b | 9714 | static void |
0b39b52e | 9715 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9716 | { |
ffc2605c | 9717 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9718 | |
9719 | /* If non-NULL, ARG should have been advanced past the location; | |
9720 | the next character must be ','. */ | |
9721 | if (arg != NULL) | |
9722 | { | |
9723 | if (arg[0] != ',' || arg[1] == '\0') | |
9724 | error (_("Format string required")); | |
9725 | else | |
9726 | { | |
9727 | /* Skip the comma. */ | |
9728 | ++arg; | |
9729 | } | |
9730 | } | |
9731 | ||
e7e0cddf | 9732 | create_breakpoint (get_current_arch (), |
ffc2605c | 9733 | location.get (), |
f00aae0f | 9734 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9735 | 0, bp_dprintf, |
9736 | 0 /* Ignore count */, | |
9737 | pending_break_support, | |
9738 | &dprintf_breakpoint_ops, | |
9739 | from_tty, | |
9740 | 1 /* enabled */, | |
9741 | 0 /* internal */, | |
9742 | 0); | |
9743 | } | |
9744 | ||
d3ce09f5 | 9745 | static void |
0b39b52e | 9746 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9747 | { |
9748 | error (_("May only run agent-printf on the target")); | |
9749 | } | |
9750 | ||
f1310107 TJB |
9751 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9752 | ranged breakpoints. */ | |
9753 | ||
9754 | static int | |
9755 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9756 | const address_space *aspace, |
09ac7c10 TT |
9757 | CORE_ADDR bp_addr, |
9758 | const struct target_waitstatus *ws) | |
f1310107 | 9759 | { |
09ac7c10 | 9760 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9761 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9762 | return 0; |
9763 | ||
f1310107 TJB |
9764 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9765 | bl->length, aspace, bp_addr); | |
9766 | } | |
9767 | ||
9768 | /* Implement the "resources_needed" breakpoint_ops method for | |
9769 | ranged breakpoints. */ | |
9770 | ||
9771 | static int | |
9772 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9773 | { | |
9774 | return target_ranged_break_num_registers (); | |
9775 | } | |
9776 | ||
9777 | /* Implement the "print_it" breakpoint_ops method for | |
9778 | ranged breakpoints. */ | |
9779 | ||
9780 | static enum print_stop_action | |
348d480f | 9781 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9782 | { |
348d480f | 9783 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9784 | struct bp_location *bl = b->loc; |
79a45e25 | 9785 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9786 | |
9787 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9788 | ||
9789 | /* Ranged breakpoints have only one location. */ | |
9790 | gdb_assert (bl && bl->next == NULL); | |
9791 | ||
9792 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9793 | |
9794 | maybe_print_thread_hit_breakpoint (uiout); | |
9795 | ||
f1310107 | 9796 | if (b->disposition == disp_del) |
112e8700 | 9797 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9798 | else |
112e8700 SM |
9799 | uiout->text ("Ranged breakpoint "); |
9800 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9801 | { |
112e8700 | 9802 | uiout->field_string ("reason", |
f1310107 | 9803 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9804 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9805 | } |
112e8700 SM |
9806 | uiout->field_int ("bkptno", b->number); |
9807 | uiout->text (", "); | |
f1310107 TJB |
9808 | |
9809 | return PRINT_SRC_AND_LOC; | |
9810 | } | |
9811 | ||
9812 | /* Implement the "print_one" breakpoint_ops method for | |
9813 | ranged breakpoints. */ | |
9814 | ||
9815 | static void | |
9816 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9817 | struct bp_location **last_loc) | |
9818 | { | |
9819 | struct bp_location *bl = b->loc; | |
9820 | struct value_print_options opts; | |
79a45e25 | 9821 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9822 | |
9823 | /* Ranged breakpoints have only one location. */ | |
9824 | gdb_assert (bl && bl->next == NULL); | |
9825 | ||
9826 | get_user_print_options (&opts); | |
9827 | ||
9828 | if (opts.addressprint) | |
9829 | /* We don't print the address range here, it will be printed later | |
9830 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9831 | uiout->field_skip ("addr"); |
f1310107 TJB |
9832 | annotate_field (5); |
9833 | print_breakpoint_location (b, bl); | |
9834 | *last_loc = bl; | |
9835 | } | |
9836 | ||
9837 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9838 | ranged breakpoints. */ | |
9839 | ||
9840 | static void | |
9841 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9842 | struct ui_out *uiout) | |
9843 | { | |
9844 | CORE_ADDR address_start, address_end; | |
9845 | struct bp_location *bl = b->loc; | |
d7e74731 | 9846 | string_file stb; |
f1310107 TJB |
9847 | |
9848 | gdb_assert (bl); | |
9849 | ||
9850 | address_start = bl->address; | |
9851 | address_end = address_start + bl->length - 1; | |
9852 | ||
112e8700 | 9853 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9854 | stb.printf ("[%s, %s]", |
9855 | print_core_address (bl->gdbarch, address_start), | |
9856 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9857 | uiout->field_stream ("addr", stb); |
9858 | uiout->text ("\n"); | |
f1310107 TJB |
9859 | } |
9860 | ||
9861 | /* Implement the "print_mention" breakpoint_ops method for | |
9862 | ranged breakpoints. */ | |
9863 | ||
9864 | static void | |
9865 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9866 | { | |
9867 | struct bp_location *bl = b->loc; | |
79a45e25 | 9868 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9869 | |
9870 | gdb_assert (bl); | |
9871 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9872 | ||
112e8700 | 9873 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9874 | return; |
9875 | ||
9876 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9877 | b->number, paddress (bl->gdbarch, bl->address), | |
9878 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9879 | } | |
9880 | ||
9881 | /* Implement the "print_recreate" breakpoint_ops method for | |
9882 | ranged breakpoints. */ | |
9883 | ||
9884 | static void | |
9885 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9886 | { | |
f00aae0f | 9887 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9888 | event_location_to_string (b->location.get ()), |
9889 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9890 | print_recreate_thread (b, fp); |
f1310107 TJB |
9891 | } |
9892 | ||
9893 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9894 | ||
2060206e | 9895 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9896 | |
9897 | /* Find the address where the end of the breakpoint range should be | |
9898 | placed, given the SAL of the end of the range. This is so that if | |
9899 | the user provides a line number, the end of the range is set to the | |
9900 | last instruction of the given line. */ | |
9901 | ||
9902 | static CORE_ADDR | |
9903 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9904 | { | |
9905 | CORE_ADDR end; | |
9906 | ||
9907 | /* If the user provided a PC value, use it. Otherwise, | |
9908 | find the address of the end of the given location. */ | |
9909 | if (sal.explicit_pc) | |
9910 | end = sal.pc; | |
9911 | else | |
9912 | { | |
9913 | int ret; | |
9914 | CORE_ADDR start; | |
9915 | ||
9916 | ret = find_line_pc_range (sal, &start, &end); | |
9917 | if (!ret) | |
9918 | error (_("Could not find location of the end of the range.")); | |
9919 | ||
9920 | /* find_line_pc_range returns the start of the next line. */ | |
9921 | end--; | |
9922 | } | |
9923 | ||
9924 | return end; | |
9925 | } | |
9926 | ||
9927 | /* Implement the "break-range" CLI command. */ | |
9928 | ||
9929 | static void | |
0b39b52e | 9930 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9931 | { |
f2fc3015 | 9932 | const char *arg_start; |
f1310107 TJB |
9933 | struct linespec_result canonical_start, canonical_end; |
9934 | int bp_count, can_use_bp, length; | |
9935 | CORE_ADDR end; | |
9936 | struct breakpoint *b; | |
f1310107 TJB |
9937 | |
9938 | /* We don't support software ranged breakpoints. */ | |
9939 | if (target_ranged_break_num_registers () < 0) | |
9940 | error (_("This target does not support hardware ranged breakpoints.")); | |
9941 | ||
9942 | bp_count = hw_breakpoint_used_count (); | |
9943 | bp_count += target_ranged_break_num_registers (); | |
9944 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9945 | bp_count, 0); | |
9946 | if (can_use_bp < 0) | |
9947 | error (_("Hardware breakpoints used exceeds limit.")); | |
9948 | ||
f8eba3c6 | 9949 | arg = skip_spaces (arg); |
f1310107 TJB |
9950 | if (arg == NULL || arg[0] == '\0') |
9951 | error(_("No address range specified.")); | |
9952 | ||
f8eba3c6 | 9953 | arg_start = arg; |
ffc2605c TT |
9954 | event_location_up start_location = string_to_event_location (&arg, |
9955 | current_language); | |
9956 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9957 | |
9958 | if (arg[0] != ',') | |
9959 | error (_("Too few arguments.")); | |
6c5b2ebe | 9960 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9961 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9962 | |
6c5b2ebe | 9963 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9964 | |
6c5b2ebe PA |
9965 | if (canonical_start.lsals.size () > 1 |
9966 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9967 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9968 | ||
6c5b2ebe | 9969 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9970 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9971 | |
9972 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9973 | arg = skip_spaces (arg); |
f1310107 TJB |
9974 | |
9975 | /* Parse the end location. */ | |
9976 | ||
f1310107 TJB |
9977 | arg_start = arg; |
9978 | ||
f8eba3c6 | 9979 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9980 | parse_breakpoint_sals because we need to specify the start location's |
9981 | symtab and line as the default symtab and line for the end of the | |
9982 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9983 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9984 | event_location_up end_location = string_to_event_location (&arg, |
9985 | current_language); | |
9986 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9987 | sal_start.symtab, sal_start.line, |
9988 | &canonical_end, NULL, NULL); | |
9989 | ||
6c5b2ebe | 9990 | if (canonical_end.lsals.empty ()) |
f1310107 | 9991 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9992 | |
6c5b2ebe PA |
9993 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9994 | if (canonical_end.lsals.size () > 1 | |
9995 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9996 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9997 | ||
6c5b2ebe | 9998 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9999 | |
10000 | end = find_breakpoint_range_end (sal_end); | |
10001 | if (sal_start.pc > end) | |
177b42fe | 10002 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10003 | |
10004 | length = end - sal_start.pc + 1; | |
10005 | if (length < 0) | |
10006 | /* Length overflowed. */ | |
10007 | error (_("Address range too large.")); | |
10008 | else if (length == 1) | |
10009 | { | |
10010 | /* This range is simple enough to be handled by | |
10011 | the `hbreak' command. */ | |
81b1e71c | 10012 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10013 | |
10014 | return; | |
10015 | } | |
10016 | ||
10017 | /* Now set up the breakpoint. */ | |
10018 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10019 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10020 | set_breakpoint_count (breakpoint_count + 1); |
10021 | b->number = breakpoint_count; | |
10022 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10023 | b->location = std::move (start_location); |
10024 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10025 | b->loc->length = length; |
10026 | ||
f1310107 | 10027 | mention (b); |
8d3788bd | 10028 | observer_notify_breakpoint_created (b); |
44702360 | 10029 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10030 | } |
10031 | ||
4a64f543 MS |
10032 | /* Return non-zero if EXP is verified as constant. Returned zero |
10033 | means EXP is variable. Also the constant detection may fail for | |
10034 | some constant expressions and in such case still falsely return | |
10035 | zero. */ | |
2e6e3d9c | 10036 | |
65d79d4b SDJ |
10037 | static int |
10038 | watchpoint_exp_is_const (const struct expression *exp) | |
10039 | { | |
10040 | int i = exp->nelts; | |
10041 | ||
10042 | while (i > 0) | |
10043 | { | |
10044 | int oplenp, argsp; | |
10045 | ||
10046 | /* We are only interested in the descriptor of each element. */ | |
10047 | operator_length (exp, i, &oplenp, &argsp); | |
10048 | i -= oplenp; | |
10049 | ||
10050 | switch (exp->elts[i].opcode) | |
10051 | { | |
10052 | case BINOP_ADD: | |
10053 | case BINOP_SUB: | |
10054 | case BINOP_MUL: | |
10055 | case BINOP_DIV: | |
10056 | case BINOP_REM: | |
10057 | case BINOP_MOD: | |
10058 | case BINOP_LSH: | |
10059 | case BINOP_RSH: | |
10060 | case BINOP_LOGICAL_AND: | |
10061 | case BINOP_LOGICAL_OR: | |
10062 | case BINOP_BITWISE_AND: | |
10063 | case BINOP_BITWISE_IOR: | |
10064 | case BINOP_BITWISE_XOR: | |
10065 | case BINOP_EQUAL: | |
10066 | case BINOP_NOTEQUAL: | |
10067 | case BINOP_LESS: | |
10068 | case BINOP_GTR: | |
10069 | case BINOP_LEQ: | |
10070 | case BINOP_GEQ: | |
10071 | case BINOP_REPEAT: | |
10072 | case BINOP_COMMA: | |
10073 | case BINOP_EXP: | |
10074 | case BINOP_MIN: | |
10075 | case BINOP_MAX: | |
10076 | case BINOP_INTDIV: | |
10077 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10078 | case TERNOP_COND: |
10079 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10080 | |
10081 | case OP_LONG: | |
edd079d9 | 10082 | case OP_FLOAT: |
65d79d4b SDJ |
10083 | case OP_LAST: |
10084 | case OP_COMPLEX: | |
10085 | case OP_STRING: | |
65d79d4b SDJ |
10086 | case OP_ARRAY: |
10087 | case OP_TYPE: | |
608b4967 TT |
10088 | case OP_TYPEOF: |
10089 | case OP_DECLTYPE: | |
6e72ca20 | 10090 | case OP_TYPEID: |
65d79d4b SDJ |
10091 | case OP_NAME: |
10092 | case OP_OBJC_NSSTRING: | |
10093 | ||
10094 | case UNOP_NEG: | |
10095 | case UNOP_LOGICAL_NOT: | |
10096 | case UNOP_COMPLEMENT: | |
10097 | case UNOP_ADDR: | |
10098 | case UNOP_HIGH: | |
aeaa2474 | 10099 | case UNOP_CAST: |
9eaf6705 TT |
10100 | |
10101 | case UNOP_CAST_TYPE: | |
10102 | case UNOP_REINTERPRET_CAST: | |
10103 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10104 | /* Unary, binary and ternary operators: We have to check |
10105 | their operands. If they are constant, then so is the | |
10106 | result of that operation. For instance, if A and B are | |
10107 | determined to be constants, then so is "A + B". | |
10108 | ||
10109 | UNOP_IND is one exception to the rule above, because the | |
10110 | value of *ADDR is not necessarily a constant, even when | |
10111 | ADDR is. */ | |
65d79d4b SDJ |
10112 | break; |
10113 | ||
10114 | case OP_VAR_VALUE: | |
10115 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10116 | |
65d79d4b | 10117 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10118 | possible that a buggy compiler could mark a variable as |
10119 | constant even when it is not, and TYPE_CONST would return | |
10120 | true in this case, while SYMBOL_CLASS wouldn't. | |
10121 | ||
10122 | We also have to check for function symbols because they | |
10123 | are always constant. */ | |
65d79d4b SDJ |
10124 | { |
10125 | struct symbol *s = exp->elts[i + 2].symbol; | |
10126 | ||
10127 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10128 | && SYMBOL_CLASS (s) != LOC_CONST | |
10129 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10130 | return 0; | |
10131 | break; | |
10132 | } | |
10133 | ||
10134 | /* The default action is to return 0 because we are using | |
10135 | the optimistic approach here: If we don't know something, | |
10136 | then it is not a constant. */ | |
10137 | default: | |
10138 | return 0; | |
10139 | } | |
10140 | } | |
10141 | ||
10142 | return 1; | |
10143 | } | |
10144 | ||
c1fc2657 | 10145 | /* Watchpoint destructor. */ |
3a5c3e22 | 10146 | |
c1fc2657 | 10147 | watchpoint::~watchpoint () |
3a5c3e22 | 10148 | { |
c1fc2657 SM |
10149 | xfree (this->exp_string); |
10150 | xfree (this->exp_string_reparse); | |
10151 | value_free (this->val); | |
3a5c3e22 PA |
10152 | } |
10153 | ||
348d480f PA |
10154 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10155 | ||
10156 | static void | |
10157 | re_set_watchpoint (struct breakpoint *b) | |
10158 | { | |
3a5c3e22 PA |
10159 | struct watchpoint *w = (struct watchpoint *) b; |
10160 | ||
348d480f PA |
10161 | /* Watchpoint can be either on expression using entirely global |
10162 | variables, or it can be on local variables. | |
10163 | ||
10164 | Watchpoints of the first kind are never auto-deleted, and even | |
10165 | persist across program restarts. Since they can use variables | |
10166 | from shared libraries, we need to reparse expression as libraries | |
10167 | are loaded and unloaded. | |
10168 | ||
10169 | Watchpoints on local variables can also change meaning as result | |
10170 | of solib event. For example, if a watchpoint uses both a local | |
10171 | and a global variables in expression, it's a local watchpoint, | |
10172 | but unloading of a shared library will make the expression | |
10173 | invalid. This is not a very common use case, but we still | |
10174 | re-evaluate expression, to avoid surprises to the user. | |
10175 | ||
10176 | Note that for local watchpoints, we re-evaluate it only if | |
10177 | watchpoints frame id is still valid. If it's not, it means the | |
10178 | watchpoint is out of scope and will be deleted soon. In fact, | |
10179 | I'm not sure we'll ever be called in this case. | |
10180 | ||
10181 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10182 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10183 | |
3a5c3e22 PA |
10184 | Don't do anything about disabled watchpoints, since they will be |
10185 | reevaluated again when enabled. */ | |
10186 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10187 | } |
10188 | ||
77b06cd7 TJB |
10189 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10190 | ||
10191 | static int | |
10192 | insert_watchpoint (struct bp_location *bl) | |
10193 | { | |
3a5c3e22 PA |
10194 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10195 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10196 | |
10197 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10198 | w->cond_exp.get ()); |
77b06cd7 TJB |
10199 | } |
10200 | ||
10201 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10202 | ||
10203 | static int | |
73971819 | 10204 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10205 | { |
3a5c3e22 PA |
10206 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10207 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10208 | |
10209 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10210 | w->cond_exp.get ()); |
e09342b5 TJB |
10211 | } |
10212 | ||
e09342b5 | 10213 | static int |
348d480f | 10214 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10215 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10216 | const struct target_waitstatus *ws) |
e09342b5 | 10217 | { |
348d480f | 10218 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10219 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10220 | |
348d480f PA |
10221 | /* Continuable hardware watchpoints are treated as non-existent if the |
10222 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10223 | some data address). Otherwise gdb won't stop on a break instruction | |
10224 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10225 | been defined. Also skip watchpoints which we know did not trigger | |
10226 | (did not match the data address). */ | |
10227 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10228 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10229 | return 0; |
9c06b0b4 | 10230 | |
348d480f | 10231 | return 1; |
9c06b0b4 TJB |
10232 | } |
10233 | ||
348d480f PA |
10234 | static void |
10235 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10236 | { |
348d480f | 10237 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10238 | |
348d480f | 10239 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10240 | } |
10241 | ||
10242 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10243 | hardware watchpoints. */ |
9c06b0b4 TJB |
10244 | |
10245 | static int | |
348d480f | 10246 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10247 | { |
3a5c3e22 PA |
10248 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10249 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10250 | |
10251 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10252 | } |
10253 | ||
10254 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10255 | hardware watchpoints. */ |
9c06b0b4 TJB |
10256 | |
10257 | static int | |
348d480f | 10258 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10259 | { |
efa80663 PA |
10260 | /* Read and access watchpoints only work with hardware support. */ |
10261 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10262 | } |
10263 | ||
9c06b0b4 | 10264 | static enum print_stop_action |
348d480f | 10265 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10266 | { |
348d480f | 10267 | struct breakpoint *b; |
348d480f | 10268 | enum print_stop_action result; |
3a5c3e22 | 10269 | struct watchpoint *w; |
79a45e25 | 10270 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10271 | |
10272 | gdb_assert (bs->bp_location_at != NULL); | |
10273 | ||
348d480f | 10274 | b = bs->breakpoint_at; |
3a5c3e22 | 10275 | w = (struct watchpoint *) b; |
348d480f | 10276 | |
f303dbd6 PA |
10277 | annotate_watchpoint (b->number); |
10278 | maybe_print_thread_hit_breakpoint (uiout); | |
10279 | ||
d7e74731 PA |
10280 | string_file stb; |
10281 | ||
76f9c9cf | 10282 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10283 | switch (b->type) |
10284 | { | |
348d480f | 10285 | case bp_watchpoint: |
9c06b0b4 | 10286 | case bp_hardware_watchpoint: |
112e8700 SM |
10287 | if (uiout->is_mi_like_p ()) |
10288 | uiout->field_string | |
10289 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10290 | mention (b); |
76f9c9cf | 10291 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10292 | uiout->text ("\nOld value = "); |
d7e74731 | 10293 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10294 | uiout->field_stream ("old", stb); |
10295 | uiout->text ("\nNew value = "); | |
d7e74731 | 10296 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10297 | uiout->field_stream ("new", stb); |
10298 | uiout->text ("\n"); | |
348d480f PA |
10299 | /* More than one watchpoint may have been triggered. */ |
10300 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10301 | break; |
10302 | ||
10303 | case bp_read_watchpoint: | |
112e8700 SM |
10304 | if (uiout->is_mi_like_p ()) |
10305 | uiout->field_string | |
10306 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10307 | mention (b); |
76f9c9cf | 10308 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10309 | uiout->text ("\nValue = "); |
d7e74731 | 10310 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10311 | uiout->field_stream ("value", stb); |
10312 | uiout->text ("\n"); | |
348d480f | 10313 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10314 | break; |
10315 | ||
10316 | case bp_access_watchpoint: | |
348d480f PA |
10317 | if (bs->old_val != NULL) |
10318 | { | |
112e8700 SM |
10319 | if (uiout->is_mi_like_p ()) |
10320 | uiout->field_string | |
10321 | ("reason", | |
348d480f PA |
10322 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10323 | mention (b); | |
76f9c9cf | 10324 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10325 | uiout->text ("\nOld value = "); |
d7e74731 | 10326 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10327 | uiout->field_stream ("old", stb); |
10328 | uiout->text ("\nNew value = "); | |
348d480f PA |
10329 | } |
10330 | else | |
10331 | { | |
10332 | mention (b); | |
112e8700 SM |
10333 | if (uiout->is_mi_like_p ()) |
10334 | uiout->field_string | |
10335 | ("reason", | |
348d480f | 10336 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10337 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10338 | uiout->text ("\nValue = "); |
348d480f | 10339 | } |
d7e74731 | 10340 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10341 | uiout->field_stream ("new", stb); |
10342 | uiout->text ("\n"); | |
348d480f | 10343 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10344 | break; |
10345 | default: | |
348d480f | 10346 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10347 | } |
10348 | ||
348d480f PA |
10349 | return result; |
10350 | } | |
10351 | ||
10352 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10353 | watchpoints. */ | |
10354 | ||
10355 | static void | |
10356 | print_mention_watchpoint (struct breakpoint *b) | |
10357 | { | |
3a5c3e22 | 10358 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10359 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10360 | const char *tuple_name; |
348d480f PA |
10361 | |
10362 | switch (b->type) | |
10363 | { | |
10364 | case bp_watchpoint: | |
112e8700 | 10365 | uiout->text ("Watchpoint "); |
46b9c129 | 10366 | tuple_name = "wpt"; |
348d480f PA |
10367 | break; |
10368 | case bp_hardware_watchpoint: | |
112e8700 | 10369 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10370 | tuple_name = "wpt"; |
348d480f PA |
10371 | break; |
10372 | case bp_read_watchpoint: | |
112e8700 | 10373 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10374 | tuple_name = "hw-rwpt"; |
348d480f PA |
10375 | break; |
10376 | case bp_access_watchpoint: | |
112e8700 | 10377 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10378 | tuple_name = "hw-awpt"; |
348d480f PA |
10379 | break; |
10380 | default: | |
10381 | internal_error (__FILE__, __LINE__, | |
10382 | _("Invalid hardware watchpoint type.")); | |
10383 | } | |
10384 | ||
46b9c129 | 10385 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10386 | uiout->field_int ("number", b->number); |
10387 | uiout->text (": "); | |
10388 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10389 | } |
10390 | ||
10391 | /* Implement the "print_recreate" breakpoint_ops method for | |
10392 | watchpoints. */ | |
10393 | ||
10394 | static void | |
10395 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10396 | { | |
3a5c3e22 PA |
10397 | struct watchpoint *w = (struct watchpoint *) b; |
10398 | ||
348d480f PA |
10399 | switch (b->type) |
10400 | { | |
10401 | case bp_watchpoint: | |
10402 | case bp_hardware_watchpoint: | |
10403 | fprintf_unfiltered (fp, "watch"); | |
10404 | break; | |
10405 | case bp_read_watchpoint: | |
10406 | fprintf_unfiltered (fp, "rwatch"); | |
10407 | break; | |
10408 | case bp_access_watchpoint: | |
10409 | fprintf_unfiltered (fp, "awatch"); | |
10410 | break; | |
10411 | default: | |
10412 | internal_error (__FILE__, __LINE__, | |
10413 | _("Invalid watchpoint type.")); | |
10414 | } | |
10415 | ||
3a5c3e22 | 10416 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10417 | print_recreate_thread (b, fp); |
348d480f PA |
10418 | } |
10419 | ||
427cd150 TT |
10420 | /* Implement the "explains_signal" breakpoint_ops method for |
10421 | watchpoints. */ | |
10422 | ||
47591c29 | 10423 | static int |
427cd150 TT |
10424 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10425 | { | |
10426 | /* A software watchpoint cannot cause a signal other than | |
10427 | GDB_SIGNAL_TRAP. */ | |
10428 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10429 | return 0; |
427cd150 | 10430 | |
47591c29 | 10431 | return 1; |
427cd150 TT |
10432 | } |
10433 | ||
348d480f PA |
10434 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10435 | ||
2060206e | 10436 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10437 | |
10438 | /* Implement the "insert" breakpoint_ops method for | |
10439 | masked hardware watchpoints. */ | |
10440 | ||
10441 | static int | |
10442 | insert_masked_watchpoint (struct bp_location *bl) | |
10443 | { | |
3a5c3e22 PA |
10444 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10445 | ||
10446 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10447 | bl->watchpoint_type); |
10448 | } | |
10449 | ||
10450 | /* Implement the "remove" breakpoint_ops method for | |
10451 | masked hardware watchpoints. */ | |
10452 | ||
10453 | static int | |
73971819 | 10454 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10455 | { |
3a5c3e22 PA |
10456 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10457 | ||
10458 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10459 | bl->watchpoint_type); |
10460 | } | |
10461 | ||
10462 | /* Implement the "resources_needed" breakpoint_ops method for | |
10463 | masked hardware watchpoints. */ | |
10464 | ||
10465 | static int | |
10466 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10467 | { | |
3a5c3e22 PA |
10468 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10469 | ||
10470 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10471 | } |
10472 | ||
10473 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10474 | masked hardware watchpoints. */ | |
10475 | ||
10476 | static int | |
10477 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10478 | { | |
10479 | return 0; | |
10480 | } | |
10481 | ||
10482 | /* Implement the "print_it" breakpoint_ops method for | |
10483 | masked hardware watchpoints. */ | |
10484 | ||
10485 | static enum print_stop_action | |
10486 | print_it_masked_watchpoint (bpstat bs) | |
10487 | { | |
10488 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10489 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10490 | |
10491 | /* Masked watchpoints have only one location. */ | |
10492 | gdb_assert (b->loc && b->loc->next == NULL); | |
10493 | ||
f303dbd6 PA |
10494 | annotate_watchpoint (b->number); |
10495 | maybe_print_thread_hit_breakpoint (uiout); | |
10496 | ||
348d480f PA |
10497 | switch (b->type) |
10498 | { | |
10499 | case bp_hardware_watchpoint: | |
112e8700 SM |
10500 | if (uiout->is_mi_like_p ()) |
10501 | uiout->field_string | |
10502 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10503 | break; |
10504 | ||
10505 | case bp_read_watchpoint: | |
112e8700 SM |
10506 | if (uiout->is_mi_like_p ()) |
10507 | uiout->field_string | |
10508 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10509 | break; |
10510 | ||
10511 | case bp_access_watchpoint: | |
112e8700 SM |
10512 | if (uiout->is_mi_like_p ()) |
10513 | uiout->field_string | |
10514 | ("reason", | |
348d480f PA |
10515 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10516 | break; | |
10517 | default: | |
10518 | internal_error (__FILE__, __LINE__, | |
10519 | _("Invalid hardware watchpoint type.")); | |
10520 | } | |
10521 | ||
10522 | mention (b); | |
112e8700 | 10523 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10524 | Check the underlying instruction at PC for the memory\n\ |
10525 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10526 | uiout->text ("\n"); |
9c06b0b4 TJB |
10527 | |
10528 | /* More than one watchpoint may have been triggered. */ | |
10529 | return PRINT_UNKNOWN; | |
10530 | } | |
10531 | ||
10532 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10533 | masked hardware watchpoints. */ | |
10534 | ||
10535 | static void | |
10536 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10537 | struct ui_out *uiout) | |
10538 | { | |
3a5c3e22 PA |
10539 | struct watchpoint *w = (struct watchpoint *) b; |
10540 | ||
9c06b0b4 TJB |
10541 | /* Masked watchpoints have only one location. */ |
10542 | gdb_assert (b->loc && b->loc->next == NULL); | |
10543 | ||
112e8700 SM |
10544 | uiout->text ("\tmask "); |
10545 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10546 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10547 | } |
10548 | ||
10549 | /* Implement the "print_mention" breakpoint_ops method for | |
10550 | masked hardware watchpoints. */ | |
10551 | ||
10552 | static void | |
10553 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10554 | { | |
3a5c3e22 | 10555 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10556 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10557 | const char *tuple_name; |
9c06b0b4 TJB |
10558 | |
10559 | switch (b->type) | |
10560 | { | |
10561 | case bp_hardware_watchpoint: | |
112e8700 | 10562 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10563 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10564 | break; |
10565 | case bp_read_watchpoint: | |
112e8700 | 10566 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10567 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10568 | break; |
10569 | case bp_access_watchpoint: | |
112e8700 | 10570 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10571 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10572 | break; |
10573 | default: | |
10574 | internal_error (__FILE__, __LINE__, | |
10575 | _("Invalid hardware watchpoint type.")); | |
10576 | } | |
10577 | ||
46b9c129 | 10578 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10579 | uiout->field_int ("number", b->number); |
10580 | uiout->text (": "); | |
10581 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10582 | } |
10583 | ||
10584 | /* Implement the "print_recreate" breakpoint_ops method for | |
10585 | masked hardware watchpoints. */ | |
10586 | ||
10587 | static void | |
10588 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10589 | { | |
3a5c3e22 | 10590 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10591 | char tmp[40]; |
10592 | ||
10593 | switch (b->type) | |
10594 | { | |
10595 | case bp_hardware_watchpoint: | |
10596 | fprintf_unfiltered (fp, "watch"); | |
10597 | break; | |
10598 | case bp_read_watchpoint: | |
10599 | fprintf_unfiltered (fp, "rwatch"); | |
10600 | break; | |
10601 | case bp_access_watchpoint: | |
10602 | fprintf_unfiltered (fp, "awatch"); | |
10603 | break; | |
10604 | default: | |
10605 | internal_error (__FILE__, __LINE__, | |
10606 | _("Invalid hardware watchpoint type.")); | |
10607 | } | |
10608 | ||
3a5c3e22 PA |
10609 | sprintf_vma (tmp, w->hw_wp_mask); |
10610 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10611 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10612 | } |
10613 | ||
10614 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10615 | ||
2060206e | 10616 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10617 | |
10618 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10619 | ||
10620 | static int | |
10621 | is_masked_watchpoint (const struct breakpoint *b) | |
10622 | { | |
10623 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10624 | } | |
10625 | ||
53a5351d JM |
10626 | /* accessflag: hw_write: watch write, |
10627 | hw_read: watch read, | |
10628 | hw_access: watch access (read or write) */ | |
c906108c | 10629 | static void |
bbc13ae3 | 10630 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10631 | int just_location, int internal) |
c906108c | 10632 | { |
c1fc2657 | 10633 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10634 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10635 | struct value *val, *mark, *result; |
bb9d5f81 | 10636 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10637 | const char *exp_start = NULL; |
10638 | const char *exp_end = NULL; | |
10639 | const char *tok, *end_tok; | |
9c06b0b4 | 10640 | int toklen = -1; |
bbc13ae3 KS |
10641 | const char *cond_start = NULL; |
10642 | const char *cond_end = NULL; | |
c906108c | 10643 | enum bptype bp_type; |
37e4754d | 10644 | int thread = -1; |
0cf6dd15 | 10645 | int pc = 0; |
9c06b0b4 TJB |
10646 | /* Flag to indicate whether we are going to use masks for |
10647 | the hardware watchpoint. */ | |
10648 | int use_mask = 0; | |
10649 | CORE_ADDR mask = 0; | |
c906108c | 10650 | |
37e4754d LM |
10651 | /* Make sure that we actually have parameters to parse. */ |
10652 | if (arg != NULL && arg[0] != '\0') | |
10653 | { | |
bbc13ae3 KS |
10654 | const char *value_start; |
10655 | ||
10656 | exp_end = arg + strlen (arg); | |
37e4754d | 10657 | |
9c06b0b4 TJB |
10658 | /* Look for "parameter value" pairs at the end |
10659 | of the arguments string. */ | |
bbc13ae3 | 10660 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10661 | { |
10662 | /* Skip whitespace at the end of the argument list. */ | |
10663 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10664 | tok--; | |
10665 | ||
10666 | /* Find the beginning of the last token. | |
10667 | This is the value of the parameter. */ | |
10668 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10669 | tok--; | |
10670 | value_start = tok + 1; | |
10671 | ||
10672 | /* Skip whitespace. */ | |
10673 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10674 | tok--; | |
10675 | ||
10676 | end_tok = tok; | |
10677 | ||
10678 | /* Find the beginning of the second to last token. | |
10679 | This is the parameter itself. */ | |
10680 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10681 | tok--; | |
10682 | tok++; | |
10683 | toklen = end_tok - tok + 1; | |
10684 | ||
61012eef | 10685 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10686 | { |
5d5658a1 | 10687 | struct thread_info *thr; |
9c06b0b4 TJB |
10688 | /* At this point we've found a "thread" token, which means |
10689 | the user is trying to set a watchpoint that triggers | |
10690 | only in a specific thread. */ | |
5d5658a1 | 10691 | const char *endp; |
37e4754d | 10692 | |
9c06b0b4 TJB |
10693 | if (thread != -1) |
10694 | error(_("You can specify only one thread.")); | |
37e4754d | 10695 | |
9c06b0b4 | 10696 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10697 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10698 | |
5d5658a1 | 10699 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10700 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10701 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10702 | |
5d5658a1 | 10703 | thread = thr->global_num; |
9c06b0b4 | 10704 | } |
61012eef | 10705 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10706 | { |
10707 | /* We've found a "mask" token, which means the user wants to | |
10708 | create a hardware watchpoint that is going to have the mask | |
10709 | facility. */ | |
10710 | struct value *mask_value, *mark; | |
37e4754d | 10711 | |
9c06b0b4 TJB |
10712 | if (use_mask) |
10713 | error(_("You can specify only one mask.")); | |
37e4754d | 10714 | |
9c06b0b4 | 10715 | use_mask = just_location = 1; |
37e4754d | 10716 | |
9c06b0b4 TJB |
10717 | mark = value_mark (); |
10718 | mask_value = parse_to_comma_and_eval (&value_start); | |
10719 | mask = value_as_address (mask_value); | |
10720 | value_free_to_mark (mark); | |
10721 | } | |
10722 | else | |
10723 | /* We didn't recognize what we found. We should stop here. */ | |
10724 | break; | |
37e4754d | 10725 | |
9c06b0b4 TJB |
10726 | /* Truncate the string and get rid of the "parameter value" pair before |
10727 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10728 | exp_end = tok; |
9c06b0b4 | 10729 | } |
37e4754d | 10730 | } |
bbc13ae3 KS |
10731 | else |
10732 | exp_end = arg; | |
37e4754d | 10733 | |
bbc13ae3 KS |
10734 | /* Parse the rest of the arguments. From here on out, everything |
10735 | is in terms of a newly allocated string instead of the original | |
10736 | ARG. */ | |
c906108c | 10737 | innermost_block = NULL; |
81b1e71c TT |
10738 | std::string expression (arg, exp_end - arg); |
10739 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10740 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10741 | exp_end = arg; |
fa8a61dc TT |
10742 | /* Remove trailing whitespace from the expression before saving it. |
10743 | This makes the eventual display of the expression string a bit | |
10744 | prettier. */ | |
10745 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10746 | --exp_end; | |
10747 | ||
65d79d4b | 10748 | /* Checking if the expression is not constant. */ |
4d01a485 | 10749 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10750 | { |
10751 | int len; | |
10752 | ||
10753 | len = exp_end - exp_start; | |
10754 | while (len > 0 && isspace (exp_start[len - 1])) | |
10755 | len--; | |
10756 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10757 | } | |
10758 | ||
c906108c SS |
10759 | exp_valid_block = innermost_block; |
10760 | mark = value_mark (); | |
4d01a485 | 10761 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10762 | |
bb9d5f81 PP |
10763 | if (val != NULL && just_location) |
10764 | { | |
10765 | saved_bitpos = value_bitpos (val); | |
10766 | saved_bitsize = value_bitsize (val); | |
10767 | } | |
10768 | ||
06a64a0b TT |
10769 | if (just_location) |
10770 | { | |
9c06b0b4 TJB |
10771 | int ret; |
10772 | ||
06a64a0b | 10773 | exp_valid_block = NULL; |
a1442452 | 10774 | val = value_addr (result); |
06a64a0b TT |
10775 | release_value (val); |
10776 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10777 | |
10778 | if (use_mask) | |
10779 | { | |
10780 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10781 | mask); | |
10782 | if (ret == -1) | |
10783 | error (_("This target does not support masked watchpoints.")); | |
10784 | else if (ret == -2) | |
10785 | error (_("Invalid mask or memory region.")); | |
10786 | } | |
06a64a0b TT |
10787 | } |
10788 | else if (val != NULL) | |
fa4727a6 | 10789 | release_value (val); |
c906108c | 10790 | |
f1735a53 TT |
10791 | tok = skip_spaces (arg); |
10792 | end_tok = skip_to_space (tok); | |
c906108c SS |
10793 | |
10794 | toklen = end_tok - tok; | |
10795 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10796 | { | |
60e1c644 | 10797 | innermost_block = NULL; |
c906108c | 10798 | tok = cond_start = end_tok + 1; |
4d01a485 | 10799 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10800 | |
10801 | /* The watchpoint expression may not be local, but the condition | |
10802 | may still be. E.g.: `watch global if local > 0'. */ | |
10803 | cond_exp_valid_block = innermost_block; | |
10804 | ||
c906108c SS |
10805 | cond_end = tok; |
10806 | } | |
10807 | if (*tok) | |
8a3fe4f8 | 10808 | error (_("Junk at end of command.")); |
c906108c | 10809 | |
441d7c93 PA |
10810 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10811 | ||
10812 | /* Save this because create_internal_breakpoint below invalidates | |
10813 | 'wp_frame'. */ | |
10814 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10815 | |
10816 | /* If the expression is "local", then set up a "watchpoint scope" | |
10817 | breakpoint at the point where we've left the scope of the watchpoint | |
10818 | expression. Create the scope breakpoint before the watchpoint, so | |
10819 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10820 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10821 | { |
441d7c93 PA |
10822 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10823 | ||
10824 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10825 | { |
441d7c93 PA |
10826 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10827 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10828 | ||
edb3359d | 10829 | scope_breakpoint |
441d7c93 | 10830 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10831 | bp_watchpoint_scope, |
10832 | &momentary_breakpoint_ops); | |
d983da9c | 10833 | |
441d7c93 PA |
10834 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10835 | wp_frame = NULL; | |
10836 | ||
edb3359d | 10837 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10838 | |
edb3359d DJ |
10839 | /* Automatically delete the breakpoint when it hits. */ |
10840 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10841 | |
edb3359d | 10842 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10843 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10844 | |
edb3359d | 10845 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10846 | scope_breakpoint->loc->gdbarch = caller_arch; |
10847 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10848 | scope_breakpoint->loc->address |
a6d9a66e UW |
10849 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10850 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10851 | scope_breakpoint->type); |
10852 | } | |
d983da9c DJ |
10853 | } |
10854 | ||
e8369a73 AB |
10855 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10856 | watchpoints here even if hardware watchpoints are turned off, a call | |
10857 | to update_watchpoint later in this function will cause the type to | |
10858 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10859 | ||
10860 | if (accessflag == hw_read) | |
10861 | bp_type = bp_read_watchpoint; | |
10862 | else if (accessflag == hw_access) | |
10863 | bp_type = bp_access_watchpoint; | |
10864 | else | |
10865 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10866 | |
b270e6f9 | 10867 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10868 | |
348d480f | 10869 | if (use_mask) |
b270e6f9 | 10870 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10871 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10872 | else |
b270e6f9 | 10873 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10874 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10875 | w->thread = thread; |
10876 | w->disposition = disp_donttouch; | |
10877 | w->pspace = current_program_space; | |
b22e99fd | 10878 | w->exp = std::move (exp); |
3a5c3e22 PA |
10879 | w->exp_valid_block = exp_valid_block; |
10880 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10881 | if (just_location) |
10882 | { | |
10883 | struct type *t = value_type (val); | |
10884 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 10885 | |
43cc5389 TT |
10886 | w->exp_string_reparse |
10887 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10888 | |
3a5c3e22 | 10889 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10890 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10891 | } |
10892 | else | |
3a5c3e22 | 10893 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10894 | |
10895 | if (use_mask) | |
10896 | { | |
3a5c3e22 | 10897 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10898 | } |
10899 | else | |
10900 | { | |
3a5c3e22 | 10901 | w->val = val; |
bb9d5f81 PP |
10902 | w->val_bitpos = saved_bitpos; |
10903 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10904 | w->val_valid = 1; |
9c06b0b4 | 10905 | } |
77b06cd7 | 10906 | |
c906108c | 10907 | if (cond_start) |
c1fc2657 | 10908 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10909 | else |
c1fc2657 | 10910 | w->cond_string = 0; |
c5aa993b | 10911 | |
441d7c93 | 10912 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10913 | { |
441d7c93 | 10914 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10915 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10916 | } |
c906108c | 10917 | else |
f6bc2008 | 10918 | { |
3a5c3e22 PA |
10919 | w->watchpoint_frame = null_frame_id; |
10920 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10921 | } |
c906108c | 10922 | |
d983da9c | 10923 | if (scope_breakpoint != NULL) |
c906108c | 10924 | { |
d983da9c DJ |
10925 | /* The scope breakpoint is related to the watchpoint. We will |
10926 | need to act on them together. */ | |
c1fc2657 | 10927 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10928 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10929 | } |
d983da9c | 10930 | |
06a64a0b TT |
10931 | if (!just_location) |
10932 | value_free_to_mark (mark); | |
2d134ed3 | 10933 | |
b270e6f9 TT |
10934 | /* Finally update the new watchpoint. This creates the locations |
10935 | that should be inserted. */ | |
10936 | update_watchpoint (w.get (), 1); | |
a9634178 | 10937 | |
b270e6f9 | 10938 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10939 | } |
10940 | ||
e09342b5 | 10941 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10942 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10943 | |
c906108c | 10944 | static int |
a9634178 | 10945 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10946 | { |
10947 | int found_memory_cnt = 0; | |
2e70b7b9 | 10948 | struct value *head = v; |
c906108c SS |
10949 | |
10950 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10951 | if (!can_use_hw_watchpoints) |
c906108c | 10952 | return 0; |
c5aa993b | 10953 | |
5c44784c JM |
10954 | /* Make sure that the value of the expression depends only upon |
10955 | memory contents, and values computed from them within GDB. If we | |
10956 | find any register references or function calls, we can't use a | |
10957 | hardware watchpoint. | |
10958 | ||
10959 | The idea here is that evaluating an expression generates a series | |
10960 | of values, one holding the value of every subexpression. (The | |
10961 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10962 | a*b+c.) GDB's values hold almost enough information to establish | |
10963 | the criteria given above --- they identify memory lvalues, | |
10964 | register lvalues, computed values, etcetera. So we can evaluate | |
10965 | the expression, and then scan the chain of values that leaves | |
10966 | behind to decide whether we can detect any possible change to the | |
10967 | expression's final value using only hardware watchpoints. | |
10968 | ||
10969 | However, I don't think that the values returned by inferior | |
10970 | function calls are special in any way. So this function may not | |
10971 | notice that an expression involving an inferior function call | |
10972 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 10973 | for (; v; v = value_next (v)) |
c906108c | 10974 | { |
5c44784c | 10975 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10976 | { |
8464be76 DJ |
10977 | if (v != head && value_lazy (v)) |
10978 | /* A lazy memory lvalue in the chain is one that GDB never | |
10979 | needed to fetch; we either just used its address (e.g., | |
10980 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10981 | in `a,b'). This doesn't apply to HEAD; if that is | |
10982 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10983 | ; |
53a5351d | 10984 | else |
5c44784c JM |
10985 | { |
10986 | /* Ahh, memory we actually used! Check if we can cover | |
10987 | it with hardware watchpoints. */ | |
df407dfe | 10988 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10989 | |
10990 | /* We only watch structs and arrays if user asked for it | |
10991 | explicitly, never if they just happen to appear in a | |
10992 | middle of some value chain. */ | |
10993 | if (v == head | |
10994 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10995 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10996 | { | |
42ae5230 | 10997 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10998 | int len; |
10999 | int num_regs; | |
11000 | ||
a9634178 | 11001 | len = (target_exact_watchpoints |
e09342b5 TJB |
11002 | && is_scalar_type_recursive (vtype))? |
11003 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11004 | |
e09342b5 TJB |
11005 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11006 | if (!num_regs) | |
2e70b7b9 MS |
11007 | return 0; |
11008 | else | |
e09342b5 | 11009 | found_memory_cnt += num_regs; |
2e70b7b9 | 11010 | } |
5c44784c | 11011 | } |
c5aa993b | 11012 | } |
5086187c AC |
11013 | else if (VALUE_LVAL (v) != not_lval |
11014 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11015 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11016 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11017 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11018 | } |
11019 | ||
11020 | /* The expression itself looks suitable for using a hardware | |
11021 | watchpoint, but give the target machine a chance to reject it. */ | |
11022 | return found_memory_cnt; | |
11023 | } | |
11024 | ||
8b93c638 | 11025 | void |
f2fc3015 | 11026 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11027 | { |
84f4c1fe | 11028 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11029 | } |
11030 | ||
06a64a0b TT |
11031 | /* A helper function that looks for the "-location" argument and then |
11032 | calls watch_command_1. */ | |
11033 | ||
11034 | static void | |
0b39b52e | 11035 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
11036 | { |
11037 | int just_location = 0; | |
11038 | ||
11039 | if (arg | |
11040 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11041 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11042 | { | |
e9cafbcc | 11043 | arg = skip_spaces (arg); |
06a64a0b TT |
11044 | just_location = 1; |
11045 | } | |
11046 | ||
84f4c1fe | 11047 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11048 | } |
8926118c | 11049 | |
c5aa993b | 11050 | static void |
0b39b52e | 11051 | watch_command (const char *arg, int from_tty) |
c906108c | 11052 | { |
06a64a0b | 11053 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11054 | } |
11055 | ||
8b93c638 | 11056 | void |
f2fc3015 | 11057 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11058 | { |
84f4c1fe | 11059 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11060 | } |
8926118c | 11061 | |
c5aa993b | 11062 | static void |
0b39b52e | 11063 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11064 | { |
06a64a0b | 11065 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11066 | } |
11067 | ||
8b93c638 | 11068 | void |
f2fc3015 | 11069 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11070 | { |
84f4c1fe | 11071 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11072 | } |
8926118c | 11073 | |
c5aa993b | 11074 | static void |
0b39b52e | 11075 | awatch_command (const char *arg, int from_tty) |
c906108c | 11076 | { |
06a64a0b | 11077 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11078 | } |
c906108c | 11079 | \f |
c5aa993b | 11080 | |
cfc31633 PA |
11081 | /* Data for the FSM that manages the until(location)/advance commands |
11082 | in infcmd.c. Here because it uses the mechanisms of | |
11083 | breakpoints. */ | |
c906108c | 11084 | |
cfc31633 | 11085 | struct until_break_fsm |
bfec99b2 | 11086 | { |
cfc31633 PA |
11087 | /* The base class. */ |
11088 | struct thread_fsm thread_fsm; | |
11089 | ||
11090 | /* The thread that as current when the command was executed. */ | |
11091 | int thread; | |
11092 | ||
11093 | /* The breakpoint set at the destination location. */ | |
11094 | struct breakpoint *location_breakpoint; | |
11095 | ||
11096 | /* Breakpoint set at the return address in the caller frame. May be | |
11097 | NULL. */ | |
11098 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11099 | }; |
11100 | ||
8980e177 PA |
11101 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11102 | struct thread_info *thread); | |
11103 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11104 | struct thread_info *thread); | |
cfc31633 PA |
11105 | static enum async_reply_reason |
11106 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11107 | ||
11108 | /* until_break_fsm's vtable. */ | |
11109 | ||
11110 | static struct thread_fsm_ops until_break_fsm_ops = | |
11111 | { | |
11112 | NULL, /* dtor */ | |
11113 | until_break_fsm_clean_up, | |
11114 | until_break_fsm_should_stop, | |
11115 | NULL, /* return_value */ | |
11116 | until_break_fsm_async_reply_reason, | |
11117 | }; | |
11118 | ||
11119 | /* Allocate a new until_break_command_fsm. */ | |
11120 | ||
11121 | static struct until_break_fsm * | |
8980e177 | 11122 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11123 | breakpoint_up &&location_breakpoint, |
11124 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11125 | { |
11126 | struct until_break_fsm *sm; | |
11127 | ||
11128 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11129 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11130 | |
11131 | sm->thread = thread; | |
454dafbd TT |
11132 | sm->location_breakpoint = location_breakpoint.release (); |
11133 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11134 | |
11135 | return sm; | |
11136 | } | |
11137 | ||
11138 | /* Implementation of the 'should_stop' FSM method for the | |
11139 | until(location)/advance commands. */ | |
11140 | ||
11141 | static int | |
8980e177 PA |
11142 | until_break_fsm_should_stop (struct thread_fsm *self, |
11143 | struct thread_info *tp) | |
cfc31633 PA |
11144 | { |
11145 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11146 | |
11147 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11148 | sm->location_breakpoint) != NULL | |
11149 | || (sm->caller_breakpoint != NULL | |
11150 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11151 | sm->caller_breakpoint) != NULL)) | |
11152 | thread_fsm_set_finished (self); | |
11153 | ||
11154 | return 1; | |
11155 | } | |
11156 | ||
11157 | /* Implementation of the 'clean_up' FSM method for the | |
11158 | until(location)/advance commands. */ | |
11159 | ||
c2c6d25f | 11160 | static void |
8980e177 PA |
11161 | until_break_fsm_clean_up (struct thread_fsm *self, |
11162 | struct thread_info *thread) | |
43ff13b4 | 11163 | { |
cfc31633 | 11164 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11165 | |
cfc31633 PA |
11166 | /* Clean up our temporary breakpoints. */ |
11167 | if (sm->location_breakpoint != NULL) | |
11168 | { | |
11169 | delete_breakpoint (sm->location_breakpoint); | |
11170 | sm->location_breakpoint = NULL; | |
11171 | } | |
11172 | if (sm->caller_breakpoint != NULL) | |
11173 | { | |
11174 | delete_breakpoint (sm->caller_breakpoint); | |
11175 | sm->caller_breakpoint = NULL; | |
11176 | } | |
11177 | delete_longjmp_breakpoint (sm->thread); | |
11178 | } | |
11179 | ||
11180 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11181 | until(location)/advance commands. */ | |
11182 | ||
11183 | static enum async_reply_reason | |
11184 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11185 | { | |
11186 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11187 | } |
11188 | ||
c906108c | 11189 | void |
f2fc3015 | 11190 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11191 | { |
8556afb4 PA |
11192 | struct frame_info *frame; |
11193 | struct gdbarch *frame_gdbarch; | |
11194 | struct frame_id stack_frame_id; | |
11195 | struct frame_id caller_frame_id; | |
ffc2605c | 11196 | struct cleanup *old_chain; |
186c406b TT |
11197 | int thread; |
11198 | struct thread_info *tp; | |
cfc31633 | 11199 | struct until_break_fsm *sm; |
c906108c | 11200 | |
70509625 | 11201 | clear_proceed_status (0); |
c906108c SS |
11202 | |
11203 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11204 | this function. */ |
c5aa993b | 11205 | |
ffc2605c | 11206 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11207 | |
6c5b2ebe PA |
11208 | std::vector<symtab_and_line> sals |
11209 | = (last_displayed_sal_is_valid () | |
11210 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11211 | get_last_displayed_symtab (), | |
11212 | get_last_displayed_line ()) | |
11213 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11214 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11215 | |
6c5b2ebe | 11216 | if (sals.size () != 1) |
8a3fe4f8 | 11217 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11218 | |
6c5b2ebe | 11219 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11220 | |
c906108c | 11221 | if (*arg) |
8a3fe4f8 | 11222 | error (_("Junk at end of arguments.")); |
c5aa993b | 11223 | |
c906108c | 11224 | resolve_sal_pc (&sal); |
c5aa993b | 11225 | |
186c406b | 11226 | tp = inferior_thread (); |
5d5658a1 | 11227 | thread = tp->global_num; |
186c406b | 11228 | |
883bc8d1 PA |
11229 | old_chain = make_cleanup (null_cleanup, NULL); |
11230 | ||
8556afb4 PA |
11231 | /* Note linespec handling above invalidates the frame chain. |
11232 | Installing a breakpoint also invalidates the frame chain (as it | |
11233 | may need to switch threads), so do any frame handling before | |
11234 | that. */ | |
11235 | ||
11236 | frame = get_selected_frame (NULL); | |
11237 | frame_gdbarch = get_frame_arch (frame); | |
11238 | stack_frame_id = get_stack_frame_id (frame); | |
11239 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11240 | |
ae66c1fc EZ |
11241 | /* Keep within the current frame, or in frames called by the current |
11242 | one. */ | |
edb3359d | 11243 | |
454dafbd | 11244 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11245 | if (frame_id_p (caller_frame_id)) |
c906108c | 11246 | { |
883bc8d1 | 11247 | struct symtab_and_line sal2; |
cfc31633 | 11248 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11249 | |
11250 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11251 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11252 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11253 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11254 | sal2, | |
11255 | caller_frame_id, | |
11256 | bp_until); | |
186c406b | 11257 | |
883bc8d1 | 11258 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11259 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11260 | } |
c5aa993b | 11261 | |
c70a6932 JK |
11262 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11263 | frame = NULL; | |
11264 | ||
454dafbd | 11265 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11266 | if (anywhere) |
11267 | /* If the user told us to continue until a specified location, | |
11268 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11269 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11270 | null_frame_id, bp_until); | |
883bc8d1 PA |
11271 | else |
11272 | /* Otherwise, specify the selected frame, because we want to stop | |
11273 | only at the very same frame. */ | |
cfc31633 PA |
11274 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11275 | stack_frame_id, bp_until); | |
883bc8d1 | 11276 | |
8980e177 | 11277 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11278 | std::move (location_breakpoint), |
11279 | std::move (caller_breakpoint)); | |
cfc31633 | 11280 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11281 | |
cfc31633 | 11282 | discard_cleanups (old_chain); |
f107f563 | 11283 | |
cfc31633 | 11284 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11285 | } |
ae66c1fc | 11286 | |
c906108c SS |
11287 | /* This function attempts to parse an optional "if <cond>" clause |
11288 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11289 | |
c906108c SS |
11290 | Else, it returns a pointer to the condition string. (It does not |
11291 | attempt to evaluate the string against a particular block.) And, | |
11292 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11293 | if clause in the arg string. */ |
53a5351d | 11294 | |
63160a43 PA |
11295 | const char * |
11296 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11297 | { |
63160a43 | 11298 | const char *cond_string; |
c5aa993b JM |
11299 | |
11300 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11301 | return NULL; |
c5aa993b | 11302 | |
4a64f543 | 11303 | /* Skip the "if" keyword. */ |
c906108c | 11304 | (*arg) += 2; |
c5aa993b | 11305 | |
c906108c | 11306 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11307 | condition string. */ |
f1735a53 | 11308 | *arg = skip_spaces (*arg); |
c906108c | 11309 | cond_string = *arg; |
c5aa993b | 11310 | |
4a64f543 MS |
11311 | /* Assume that the condition occupies the remainder of the arg |
11312 | string. */ | |
c906108c | 11313 | (*arg) += strlen (cond_string); |
c5aa993b | 11314 | |
c906108c SS |
11315 | return cond_string; |
11316 | } | |
c5aa993b | 11317 | |
c906108c SS |
11318 | /* Commands to deal with catching events, such as signals, exceptions, |
11319 | process start/exit, etc. */ | |
c5aa993b JM |
11320 | |
11321 | typedef enum | |
11322 | { | |
44feb3ce TT |
11323 | catch_fork_temporary, catch_vfork_temporary, |
11324 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11325 | } |
11326 | catch_fork_kind; | |
11327 | ||
c906108c | 11328 | static void |
eb4c3f4a | 11329 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11330 | struct cmd_list_element *command) |
c906108c | 11331 | { |
a6d9a66e | 11332 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11333 | const char *cond_string = NULL; |
44feb3ce TT |
11334 | catch_fork_kind fork_kind; |
11335 | int tempflag; | |
11336 | ||
11337 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11338 | tempflag = (fork_kind == catch_fork_temporary | |
11339 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11340 | |
44feb3ce TT |
11341 | if (!arg) |
11342 | arg = ""; | |
f1735a53 | 11343 | arg = skip_spaces (arg); |
c5aa993b | 11344 | |
c906108c | 11345 | /* The allowed syntax is: |
c5aa993b JM |
11346 | catch [v]fork |
11347 | catch [v]fork if <cond> | |
11348 | ||
4a64f543 | 11349 | First, check if there's an if clause. */ |
c906108c | 11350 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11351 | |
c906108c | 11352 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11353 | error (_("Junk at end of arguments.")); |
c5aa993b | 11354 | |
c906108c | 11355 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11356 | and enable reporting of such events. */ |
c5aa993b JM |
11357 | switch (fork_kind) |
11358 | { | |
44feb3ce TT |
11359 | case catch_fork_temporary: |
11360 | case catch_fork_permanent: | |
a6d9a66e | 11361 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11362 | &catch_fork_breakpoint_ops); |
c906108c | 11363 | break; |
44feb3ce TT |
11364 | case catch_vfork_temporary: |
11365 | case catch_vfork_permanent: | |
a6d9a66e | 11366 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11367 | &catch_vfork_breakpoint_ops); |
c906108c | 11368 | break; |
c5aa993b | 11369 | default: |
8a3fe4f8 | 11370 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11371 | break; |
c5aa993b | 11372 | } |
c906108c SS |
11373 | } |
11374 | ||
11375 | static void | |
eb4c3f4a | 11376 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11377 | struct cmd_list_element *command) |
c906108c | 11378 | { |
a6d9a66e | 11379 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11380 | int tempflag; |
63160a43 | 11381 | const char *cond_string = NULL; |
c906108c | 11382 | |
44feb3ce TT |
11383 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11384 | ||
11385 | if (!arg) | |
11386 | arg = ""; | |
f1735a53 | 11387 | arg = skip_spaces (arg); |
c906108c SS |
11388 | |
11389 | /* The allowed syntax is: | |
c5aa993b JM |
11390 | catch exec |
11391 | catch exec if <cond> | |
c906108c | 11392 | |
4a64f543 | 11393 | First, check if there's an if clause. */ |
c906108c SS |
11394 | cond_string = ep_parse_optional_if_clause (&arg); |
11395 | ||
11396 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11397 | error (_("Junk at end of arguments.")); |
c906108c | 11398 | |
b270e6f9 TT |
11399 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11400 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11401 | &catch_exec_breakpoint_ops); |
11402 | c->exec_pathname = NULL; | |
11403 | ||
b270e6f9 | 11404 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11405 | } |
c5aa993b | 11406 | |
9ac4176b | 11407 | void |
28010a5d PA |
11408 | init_ada_exception_breakpoint (struct breakpoint *b, |
11409 | struct gdbarch *gdbarch, | |
11410 | struct symtab_and_line sal, | |
f2fc3015 | 11411 | const char *addr_string, |
c0a91b2b | 11412 | const struct breakpoint_ops *ops, |
28010a5d | 11413 | int tempflag, |
349774ef | 11414 | int enabled, |
28010a5d | 11415 | int from_tty) |
f7f9143b | 11416 | { |
f7f9143b JB |
11417 | if (from_tty) |
11418 | { | |
5af949e3 UW |
11419 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11420 | if (!loc_gdbarch) | |
11421 | loc_gdbarch = gdbarch; | |
11422 | ||
6c95b8df PA |
11423 | describe_other_breakpoints (loc_gdbarch, |
11424 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11425 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11426 | version for exception catchpoints, because two catchpoints | |
11427 | used for different exception names will use the same address. | |
11428 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11429 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11430 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11431 | the user what type of catchpoint it is. The above is good |
11432 | enough for now, though. */ | |
11433 | } | |
11434 | ||
28010a5d | 11435 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11436 | |
349774ef | 11437 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11438 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11439 | b->location = string_to_event_location (&addr_string, |
11440 | language_def (language_ada)); | |
f7f9143b | 11441 | b->language = language_ada; |
f7f9143b JB |
11442 | } |
11443 | ||
c906108c | 11444 | static void |
981a3fb3 | 11445 | catch_command (const char *arg, int from_tty) |
c906108c | 11446 | { |
44feb3ce | 11447 | error (_("Catch requires an event name.")); |
c906108c SS |
11448 | } |
11449 | \f | |
11450 | ||
11451 | static void | |
981a3fb3 | 11452 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11453 | { |
44feb3ce | 11454 | error (_("Catch requires an event name.")); |
c906108c SS |
11455 | } |
11456 | ||
81b1e71c | 11457 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11458 | |
11459 | static int | |
81b1e71c | 11460 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11461 | { |
81b1e71c TT |
11462 | uintptr_t ua = (uintptr_t) a; |
11463 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11464 | |
81b1e71c | 11465 | if (a->number < b->number) |
8a2c437b | 11466 | return -1; |
81b1e71c | 11467 | else if (a->number > b->number) |
8a2c437b TT |
11468 | return 1; |
11469 | ||
11470 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11471 | the number 0. */ | |
11472 | if (ua < ub) | |
11473 | return -1; | |
94b0e70d | 11474 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11475 | } |
11476 | ||
80f8a6eb | 11477 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11478 | |
11479 | static void | |
0b39b52e | 11480 | clear_command (const char *arg, int from_tty) |
c906108c | 11481 | { |
81b1e71c | 11482 | struct breakpoint *b; |
c906108c | 11483 | int default_match; |
c906108c SS |
11484 | int i; |
11485 | ||
6c5b2ebe PA |
11486 | std::vector<symtab_and_line> decoded_sals; |
11487 | symtab_and_line last_sal; | |
11488 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11489 | if (arg) |
11490 | { | |
6c5b2ebe PA |
11491 | decoded_sals |
11492 | = decode_line_with_current_source (arg, | |
11493 | (DECODE_LINE_FUNFIRSTLINE | |
11494 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11495 | default_match = 0; |
6c5b2ebe | 11496 | sals = decoded_sals; |
c906108c SS |
11497 | } |
11498 | else | |
11499 | { | |
1bfeeb0f JL |
11500 | /* Set sal's line, symtab, pc, and pspace to the values |
11501 | corresponding to the last call to print_frame_info. If the | |
11502 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11503 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11504 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11505 | error (_("No source file specified.")); |
c906108c | 11506 | |
c906108c | 11507 | default_match = 1; |
6c5b2ebe | 11508 | sals = last_sal; |
c906108c SS |
11509 | } |
11510 | ||
4a64f543 MS |
11511 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11512 | seems, because all existing breakpoints typically have both | |
11513 | file/line and pc set. So, if clear is given file/line, we can | |
11514 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11515 | |
11516 | We only support clearing given the address explicitly | |
11517 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11518 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11519 | due to optimization, all in one block. |
4a64f543 MS |
11520 | |
11521 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11522 | PC corresponding to the same file:line, the breakpoint won't |
11523 | be cleared. We probably can still clear the breakpoint, but | |
11524 | since the other PC value is never presented to user, user | |
11525 | can only find it by guessing, and it does not seem important | |
11526 | to support that. */ | |
11527 | ||
4a64f543 MS |
11528 | /* For each line spec given, delete bps which correspond to it. Do |
11529 | it in two passes, solely to preserve the current behavior that | |
11530 | from_tty is forced true if we delete more than one | |
11531 | breakpoint. */ | |
c906108c | 11532 | |
81b1e71c | 11533 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11534 | for (const auto &sal : sals) |
c906108c | 11535 | { |
05cba821 JK |
11536 | const char *sal_fullname; |
11537 | ||
c906108c | 11538 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11539 | If line given (pc == 0), clear all bpts on specified line. |
11540 | If defaulting, clear all bpts on default line | |
c906108c | 11541 | or at default pc. |
c5aa993b JM |
11542 | |
11543 | defaulting sal.pc != 0 tests to do | |
11544 | ||
11545 | 0 1 pc | |
11546 | 1 1 pc _and_ line | |
11547 | 0 0 line | |
11548 | 1 0 <can't happen> */ | |
c906108c | 11549 | |
05cba821 JK |
11550 | sal_fullname = (sal.symtab == NULL |
11551 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11552 | |
4a64f543 | 11553 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11554 | ALL_BREAKPOINTS (b) |
c5aa993b | 11555 | { |
0d381245 | 11556 | int match = 0; |
4a64f543 | 11557 | /* Are we going to delete b? */ |
cc60f2e3 | 11558 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11559 | { |
11560 | struct bp_location *loc = b->loc; | |
11561 | for (; loc; loc = loc->next) | |
11562 | { | |
f8eba3c6 TT |
11563 | /* If the user specified file:line, don't allow a PC |
11564 | match. This matches historical gdb behavior. */ | |
11565 | int pc_match = (!sal.explicit_line | |
11566 | && sal.pc | |
11567 | && (loc->pspace == sal.pspace) | |
11568 | && (loc->address == sal.pc) | |
11569 | && (!section_is_overlay (loc->section) | |
11570 | || loc->section == sal.section)); | |
4aac40c8 TT |
11571 | int line_match = 0; |
11572 | ||
11573 | if ((default_match || sal.explicit_line) | |
2f202fde | 11574 | && loc->symtab != NULL |
05cba821 | 11575 | && sal_fullname != NULL |
4aac40c8 | 11576 | && sal.pspace == loc->pspace |
05cba821 JK |
11577 | && loc->line_number == sal.line |
11578 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11579 | sal_fullname) == 0) | |
11580 | line_match = 1; | |
4aac40c8 | 11581 | |
0d381245 VP |
11582 | if (pc_match || line_match) |
11583 | { | |
11584 | match = 1; | |
11585 | break; | |
11586 | } | |
11587 | } | |
11588 | } | |
11589 | ||
11590 | if (match) | |
81b1e71c | 11591 | found.push_back (b); |
c906108c | 11592 | } |
80f8a6eb | 11593 | } |
8a2c437b | 11594 | |
80f8a6eb | 11595 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11596 | if (found.empty ()) |
80f8a6eb MS |
11597 | { |
11598 | if (arg) | |
8a3fe4f8 | 11599 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11600 | else |
8a3fe4f8 | 11601 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11602 | } |
c906108c | 11603 | |
8a2c437b | 11604 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11605 | std::sort (found.begin (), found.end (), |
11606 | [] (const breakpoint *a, const breakpoint *b) | |
11607 | { | |
11608 | return compare_breakpoints (a, b) < 0; | |
11609 | }); | |
11610 | found.erase (std::unique (found.begin (), found.end (), | |
11611 | [] (const breakpoint *a, const breakpoint *b) | |
11612 | { | |
11613 | return compare_breakpoints (a, b) == 0; | |
11614 | }), | |
11615 | found.end ()); | |
8a2c437b | 11616 | |
81b1e71c | 11617 | if (found.size () > 1) |
4a64f543 | 11618 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11619 | if (from_tty) |
a3f17187 | 11620 | { |
81b1e71c | 11621 | if (found.size () == 1) |
a3f17187 AC |
11622 | printf_unfiltered (_("Deleted breakpoint ")); |
11623 | else | |
11624 | printf_unfiltered (_("Deleted breakpoints ")); | |
11625 | } | |
d6e956e5 | 11626 | |
81b1e71c | 11627 | for (breakpoint *iter : found) |
80f8a6eb | 11628 | { |
c5aa993b | 11629 | if (from_tty) |
81b1e71c TT |
11630 | printf_unfiltered ("%d ", iter->number); |
11631 | delete_breakpoint (iter); | |
c906108c | 11632 | } |
80f8a6eb MS |
11633 | if (from_tty) |
11634 | putchar_unfiltered ('\n'); | |
c906108c SS |
11635 | } |
11636 | \f | |
11637 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11638 | all breakpoints that are marked for deletion, whether hit or not. | |
11639 | This is called after any breakpoint is hit, or after errors. */ | |
11640 | ||
11641 | void | |
fba45db2 | 11642 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11643 | { |
35df4500 | 11644 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11645 | |
11646 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11647 | if (bs->breakpoint_at |
11648 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11649 | && bs->stop) |
f431efe5 | 11650 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11651 | |
35df4500 | 11652 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11653 | { |
b5de0fa7 | 11654 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11655 | delete_breakpoint (b); |
11656 | } | |
c906108c SS |
11657 | } |
11658 | ||
4a64f543 MS |
11659 | /* A comparison function for bp_location AP and BP being interfaced to |
11660 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11661 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11662 | secondarily by ordering first permanent elements and |
4a64f543 | 11663 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11664 | qsort being an unstable algorithm. */ |
876fa593 JK |
11665 | |
11666 | static int | |
f5336ca5 | 11667 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11668 | { |
9a3c8263 SM |
11669 | const struct bp_location *a = *(const struct bp_location **) ap; |
11670 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11671 | |
11672 | if (a->address != b->address) | |
11673 | return (a->address > b->address) - (a->address < b->address); | |
11674 | ||
dea2aa5f LM |
11675 | /* Sort locations at the same address by their pspace number, keeping |
11676 | locations of the same inferior (in a multi-inferior environment) | |
11677 | grouped. */ | |
11678 | ||
11679 | if (a->pspace->num != b->pspace->num) | |
11680 | return ((a->pspace->num > b->pspace->num) | |
11681 | - (a->pspace->num < b->pspace->num)); | |
11682 | ||
876fa593 | 11683 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11684 | if (a->permanent != b->permanent) |
11685 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11686 | |
c56a97f9 JK |
11687 | /* Make the internal GDB representation stable across GDB runs |
11688 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11689 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11690 | |
11691 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11692 | return ((a->owner->number > b->owner->number) |
11693 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11694 | |
11695 | return (a > b) - (a < b); | |
11696 | } | |
11697 | ||
f5336ca5 PA |
11698 | /* Set bp_locations_placed_address_before_address_max and |
11699 | bp_locations_shadow_len_after_address_max according to the current | |
11700 | content of the bp_locations array. */ | |
f7545552 TT |
11701 | |
11702 | static void | |
f5336ca5 | 11703 | bp_locations_target_extensions_update (void) |
f7545552 | 11704 | { |
876fa593 JK |
11705 | struct bp_location *bl, **blp_tmp; |
11706 | ||
f5336ca5 PA |
11707 | bp_locations_placed_address_before_address_max = 0; |
11708 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11709 | |
11710 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11711 | { | |
11712 | CORE_ADDR start, end, addr; | |
11713 | ||
11714 | if (!bp_location_has_shadow (bl)) | |
11715 | continue; | |
11716 | ||
11717 | start = bl->target_info.placed_address; | |
11718 | end = start + bl->target_info.shadow_len; | |
11719 | ||
11720 | gdb_assert (bl->address >= start); | |
11721 | addr = bl->address - start; | |
f5336ca5 PA |
11722 | if (addr > bp_locations_placed_address_before_address_max) |
11723 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11724 | |
11725 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11726 | ||
11727 | gdb_assert (bl->address < end); | |
11728 | addr = end - bl->address; | |
f5336ca5 PA |
11729 | if (addr > bp_locations_shadow_len_after_address_max) |
11730 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11731 | } |
f7545552 TT |
11732 | } |
11733 | ||
1e4d1764 YQ |
11734 | /* Download tracepoint locations if they haven't been. */ |
11735 | ||
11736 | static void | |
11737 | download_tracepoint_locations (void) | |
11738 | { | |
7ed2c994 | 11739 | struct breakpoint *b; |
dd2e65cc | 11740 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11741 | |
5ed8105e | 11742 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11743 | |
7ed2c994 | 11744 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11745 | { |
7ed2c994 | 11746 | struct bp_location *bl; |
1e4d1764 | 11747 | struct tracepoint *t; |
f2a8bc8a | 11748 | int bp_location_downloaded = 0; |
1e4d1764 | 11749 | |
7ed2c994 | 11750 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11751 | ? !may_insert_fast_tracepoints |
11752 | : !may_insert_tracepoints)) | |
11753 | continue; | |
11754 | ||
dd2e65cc YQ |
11755 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11756 | { | |
11757 | if (target_can_download_tracepoint ()) | |
11758 | can_download_tracepoint = TRIBOOL_TRUE; | |
11759 | else | |
11760 | can_download_tracepoint = TRIBOOL_FALSE; | |
11761 | } | |
11762 | ||
11763 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11764 | break; | |
11765 | ||
7ed2c994 YQ |
11766 | for (bl = b->loc; bl; bl = bl->next) |
11767 | { | |
11768 | /* In tracepoint, locations are _never_ duplicated, so | |
11769 | should_be_inserted is equivalent to | |
11770 | unduplicated_should_be_inserted. */ | |
11771 | if (!should_be_inserted (bl) || bl->inserted) | |
11772 | continue; | |
1e4d1764 | 11773 | |
7ed2c994 | 11774 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11775 | |
7ed2c994 | 11776 | target_download_tracepoint (bl); |
1e4d1764 | 11777 | |
7ed2c994 | 11778 | bl->inserted = 1; |
f2a8bc8a | 11779 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11780 | } |
11781 | t = (struct tracepoint *) b; | |
11782 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11783 | if (bp_location_downloaded) |
11784 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11785 | } |
1e4d1764 YQ |
11786 | } |
11787 | ||
934709f0 PW |
11788 | /* Swap the insertion/duplication state between two locations. */ |
11789 | ||
11790 | static void | |
11791 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11792 | { | |
11793 | const int left_inserted = left->inserted; | |
11794 | const int left_duplicate = left->duplicate; | |
b775012e | 11795 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11796 | const struct bp_target_info left_target_info = left->target_info; |
11797 | ||
1e4d1764 YQ |
11798 | /* Locations of tracepoints can never be duplicated. */ |
11799 | if (is_tracepoint (left->owner)) | |
11800 | gdb_assert (!left->duplicate); | |
11801 | if (is_tracepoint (right->owner)) | |
11802 | gdb_assert (!right->duplicate); | |
11803 | ||
934709f0 PW |
11804 | left->inserted = right->inserted; |
11805 | left->duplicate = right->duplicate; | |
b775012e | 11806 | left->needs_update = right->needs_update; |
934709f0 PW |
11807 | left->target_info = right->target_info; |
11808 | right->inserted = left_inserted; | |
11809 | right->duplicate = left_duplicate; | |
b775012e | 11810 | right->needs_update = left_needs_update; |
934709f0 PW |
11811 | right->target_info = left_target_info; |
11812 | } | |
11813 | ||
b775012e LM |
11814 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11815 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11816 | conditions on the target's side. Such conditions need to be updated on | |
11817 | the target. */ | |
11818 | ||
11819 | static void | |
11820 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11821 | { | |
11822 | struct bp_location **locp = NULL, **loc2p; | |
11823 | struct bp_location *loc; | |
11824 | CORE_ADDR address = 0; | |
11825 | int pspace_num; | |
11826 | ||
11827 | address = bl->address; | |
11828 | pspace_num = bl->pspace->num; | |
11829 | ||
11830 | /* This is only meaningful if the target is | |
11831 | evaluating conditions and if the user has | |
11832 | opted for condition evaluation on the target's | |
11833 | side. */ | |
11834 | if (gdb_evaluates_breakpoint_condition_p () | |
11835 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11836 | return; | |
11837 | ||
11838 | /* Flag all breakpoint locations with this address and | |
11839 | the same program space as the location | |
11840 | as "its condition has changed". We need to | |
11841 | update the conditions on the target's side. */ | |
11842 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11843 | { | |
11844 | loc = *loc2p; | |
11845 | ||
11846 | if (!is_breakpoint (loc->owner) | |
11847 | || pspace_num != loc->pspace->num) | |
11848 | continue; | |
11849 | ||
11850 | /* Flag the location appropriately. We use a different state to | |
11851 | let everyone know that we already updated the set of locations | |
11852 | with addr bl->address and program space bl->pspace. This is so | |
11853 | we don't have to keep calling these functions just to mark locations | |
11854 | that have already been marked. */ | |
11855 | loc->condition_changed = condition_updated; | |
11856 | ||
11857 | /* Free the agent expression bytecode as well. We will compute | |
11858 | it later on. */ | |
833177a4 | 11859 | loc->cond_bytecode.reset (); |
b775012e LM |
11860 | } |
11861 | } | |
44702360 PA |
11862 | /* Called whether new breakpoints are created, or existing breakpoints |
11863 | deleted, to update the global location list and recompute which | |
11864 | locations are duplicate of which. | |
b775012e | 11865 | |
04086b45 PA |
11866 | The INSERT_MODE flag determines whether locations may not, may, or |
11867 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11868 | info. */ | |
b60e7edf | 11869 | |
0d381245 | 11870 | static void |
44702360 | 11871 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11872 | { |
74960c60 | 11873 | struct breakpoint *b; |
876fa593 | 11874 | struct bp_location **locp, *loc; |
b775012e LM |
11875 | /* Last breakpoint location address that was marked for update. */ |
11876 | CORE_ADDR last_addr = 0; | |
11877 | /* Last breakpoint location program space that was marked for update. */ | |
11878 | int last_pspace_num = -1; | |
f7545552 | 11879 | |
2d134ed3 PA |
11880 | /* Used in the duplicates detection below. When iterating over all |
11881 | bp_locations, points to the first bp_location of a given address. | |
11882 | Breakpoints and watchpoints of different types are never | |
11883 | duplicates of each other. Keep one pointer for each type of | |
11884 | breakpoint/watchpoint, so we only need to loop over all locations | |
11885 | once. */ | |
11886 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11887 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11888 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11889 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11890 | |
f5336ca5 PA |
11891 | /* Saved former bp_locations array which we compare against the newly |
11892 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11893 | struct bp_location **old_locp; |
f5336ca5 | 11894 | unsigned old_locations_count; |
81b1e71c | 11895 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11896 | |
f5336ca5 PA |
11897 | old_locations_count = bp_locations_count; |
11898 | bp_locations = NULL; | |
11899 | bp_locations_count = 0; | |
0d381245 | 11900 | |
74960c60 | 11901 | ALL_BREAKPOINTS (b) |
876fa593 | 11902 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11903 | bp_locations_count++; |
876fa593 | 11904 | |
f5336ca5 PA |
11905 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11906 | locp = bp_locations; | |
876fa593 JK |
11907 | ALL_BREAKPOINTS (b) |
11908 | for (loc = b->loc; loc; loc = loc->next) | |
11909 | *locp++ = loc; | |
f5336ca5 PA |
11910 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11911 | bp_locations_compare); | |
876fa593 | 11912 | |
f5336ca5 | 11913 | bp_locations_target_extensions_update (); |
74960c60 | 11914 | |
4a64f543 MS |
11915 | /* Identify bp_location instances that are no longer present in the |
11916 | new list, and therefore should be freed. Note that it's not | |
11917 | necessary that those locations should be removed from inferior -- | |
11918 | if there's another location at the same address (previously | |
11919 | marked as duplicate), we don't need to remove/insert the | |
11920 | location. | |
876fa593 | 11921 | |
4a64f543 MS |
11922 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11923 | and former bp_location array state respectively. */ | |
876fa593 | 11924 | |
f5336ca5 | 11925 | locp = bp_locations; |
81b1e71c TT |
11926 | for (old_locp = old_locations.get (); |
11927 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11928 | old_locp++) |
74960c60 | 11929 | { |
876fa593 | 11930 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11931 | struct bp_location **loc2p; |
876fa593 | 11932 | |
e5dd4106 | 11933 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11934 | not, we have to free it. */ |
c7d46a38 | 11935 | int found_object = 0; |
20874c92 VP |
11936 | /* Tells if the location should remain inserted in the target. */ |
11937 | int keep_in_target = 0; | |
11938 | int removed = 0; | |
876fa593 | 11939 | |
4a64f543 MS |
11940 | /* Skip LOCP entries which will definitely never be needed. |
11941 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11942 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11943 | && (*locp)->address < old_loc->address) |
876fa593 | 11944 | locp++; |
c7d46a38 PA |
11945 | |
11946 | for (loc2p = locp; | |
f5336ca5 | 11947 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11948 | && (*loc2p)->address == old_loc->address); |
11949 | loc2p++) | |
11950 | { | |
b775012e LM |
11951 | /* Check if this is a new/duplicated location or a duplicated |
11952 | location that had its condition modified. If so, we want to send | |
11953 | its condition to the target if evaluation of conditions is taking | |
11954 | place there. */ | |
11955 | if ((*loc2p)->condition_changed == condition_modified | |
11956 | && (last_addr != old_loc->address | |
11957 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11958 | { |
b775012e LM |
11959 | force_breakpoint_reinsertion (*loc2p); |
11960 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11961 | } |
b775012e LM |
11962 | |
11963 | if (*loc2p == old_loc) | |
11964 | found_object = 1; | |
c7d46a38 | 11965 | } |
74960c60 | 11966 | |
b775012e LM |
11967 | /* We have already handled this address, update it so that we don't |
11968 | have to go through updates again. */ | |
11969 | last_addr = old_loc->address; | |
11970 | ||
11971 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11972 | if (!found_object) | |
11973 | force_breakpoint_reinsertion (old_loc); | |
11974 | ||
4a64f543 MS |
11975 | /* If this location is no longer present, and inserted, look if |
11976 | there's maybe a new location at the same address. If so, | |
11977 | mark that one inserted, and don't remove this one. This is | |
11978 | needed so that we don't have a time window where a breakpoint | |
11979 | at certain location is not inserted. */ | |
74960c60 | 11980 | |
876fa593 | 11981 | if (old_loc->inserted) |
0d381245 | 11982 | { |
4a64f543 MS |
11983 | /* If the location is inserted now, we might have to remove |
11984 | it. */ | |
74960c60 | 11985 | |
876fa593 | 11986 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11987 | { |
4a64f543 MS |
11988 | /* The location is still present in the location list, |
11989 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11990 | keep_in_target = 1; |
74960c60 VP |
11991 | } |
11992 | else | |
11993 | { | |
b775012e LM |
11994 | /* This location still exists, but it won't be kept in the |
11995 | target since it may have been disabled. We proceed to | |
11996 | remove its target-side condition. */ | |
11997 | ||
4a64f543 MS |
11998 | /* The location is either no longer present, or got |
11999 | disabled. See if there's another location at the | |
12000 | same address, in which case we don't need to remove | |
12001 | this one from the target. */ | |
876fa593 | 12002 | |
2bdf28a0 | 12003 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12004 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12005 | { | |
876fa593 | 12006 | for (loc2p = locp; |
f5336ca5 | 12007 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12008 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12009 | loc2p++) |
12010 | { | |
12011 | struct bp_location *loc2 = *loc2p; | |
12012 | ||
2d134ed3 | 12013 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12014 | { |
85d721b8 PA |
12015 | /* Read watchpoint locations are switched to |
12016 | access watchpoints, if the former are not | |
12017 | supported, but the latter are. */ | |
12018 | if (is_hardware_watchpoint (old_loc->owner)) | |
12019 | { | |
12020 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12021 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12022 | } | |
12023 | ||
934709f0 PW |
12024 | /* loc2 is a duplicated location. We need to check |
12025 | if it should be inserted in case it will be | |
12026 | unduplicated. */ | |
12027 | if (loc2 != old_loc | |
12028 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12029 | { |
934709f0 | 12030 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12031 | keep_in_target = 1; |
12032 | break; | |
12033 | } | |
876fa593 JK |
12034 | } |
12035 | } | |
12036 | } | |
74960c60 VP |
12037 | } |
12038 | ||
20874c92 VP |
12039 | if (!keep_in_target) |
12040 | { | |
834c0d03 | 12041 | if (remove_breakpoint (old_loc)) |
20874c92 | 12042 | { |
4a64f543 MS |
12043 | /* This is just about all we can do. We could keep |
12044 | this location on the global list, and try to | |
12045 | remove it next time, but there's no particular | |
12046 | reason why we will succeed next time. | |
20874c92 | 12047 | |
4a64f543 MS |
12048 | Note that at this point, old_loc->owner is still |
12049 | valid, as delete_breakpoint frees the breakpoint | |
12050 | only after calling us. */ | |
3e43a32a MS |
12051 | printf_filtered (_("warning: Error removing " |
12052 | "breakpoint %d\n"), | |
876fa593 | 12053 | old_loc->owner->number); |
20874c92 VP |
12054 | } |
12055 | removed = 1; | |
12056 | } | |
0d381245 | 12057 | } |
74960c60 VP |
12058 | |
12059 | if (!found_object) | |
1c5cfe86 | 12060 | { |
fbea99ea | 12061 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12062 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12063 | { |
db82e815 PA |
12064 | /* This location was removed from the target. In |
12065 | non-stop mode, a race condition is possible where | |
12066 | we've removed a breakpoint, but stop events for that | |
12067 | breakpoint are already queued and will arrive later. | |
12068 | We apply an heuristic to be able to distinguish such | |
12069 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12070 | breakpoint location for a bit, and will retire it | |
12071 | after we see some number of events. The theory here | |
12072 | is that reporting of events should, "on the average", | |
12073 | be fair, so after a while we'll see events from all | |
12074 | threads that have anything of interest, and no longer | |
12075 | need to keep this breakpoint location around. We | |
12076 | don't hold locations forever so to reduce chances of | |
12077 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12078 | SIGTRAP. | |
12079 | ||
12080 | The heuristic failing can be disastrous on | |
12081 | decr_pc_after_break targets. | |
12082 | ||
12083 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12084 | if we fail to recognize a late breakpoint SIGTRAP, | |
12085 | because events_till_retirement has reached 0 too | |
12086 | soon, we'll fail to do the PC adjustment, and report | |
12087 | a random SIGTRAP to the user. When the user resumes | |
12088 | the inferior, it will most likely immediately crash | |
2dec564e | 12089 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12090 | corrupted, because of being resumed e.g., in the |
12091 | middle of a multi-byte instruction, or skipped a | |
12092 | one-byte instruction. This was actually seen happen | |
12093 | on native x86-linux, and should be less rare on | |
12094 | targets that do not support new thread events, like | |
12095 | remote, due to the heuristic depending on | |
12096 | thread_count. | |
12097 | ||
12098 | Mistaking a random SIGTRAP for a breakpoint trap | |
12099 | causes similar symptoms (PC adjustment applied when | |
12100 | it shouldn't), but then again, playing with SIGTRAPs | |
12101 | behind the debugger's back is asking for trouble. | |
12102 | ||
12103 | Since hardware watchpoint traps are always | |
12104 | distinguishable from other traps, so we don't need to | |
12105 | apply keep hardware watchpoint moribund locations | |
12106 | around. We simply always ignore hardware watchpoint | |
12107 | traps we can no longer explain. */ | |
12108 | ||
876fa593 JK |
12109 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12110 | old_loc->owner = NULL; | |
20874c92 | 12111 | |
876fa593 | 12112 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12113 | } |
12114 | else | |
f431efe5 PA |
12115 | { |
12116 | old_loc->owner = NULL; | |
12117 | decref_bp_location (&old_loc); | |
12118 | } | |
20874c92 | 12119 | } |
74960c60 | 12120 | } |
1c5cfe86 | 12121 | |
348d480f PA |
12122 | /* Rescan breakpoints at the same address and section, marking the |
12123 | first one as "first" and any others as "duplicates". This is so | |
12124 | that the bpt instruction is only inserted once. If we have a | |
12125 | permanent breakpoint at the same place as BPT, make that one the | |
12126 | official one, and the rest as duplicates. Permanent breakpoints | |
12127 | are sorted first for the same address. | |
12128 | ||
12129 | Do the same for hardware watchpoints, but also considering the | |
12130 | watchpoint's type (regular/access/read) and length. */ | |
12131 | ||
12132 | bp_loc_first = NULL; | |
12133 | wp_loc_first = NULL; | |
12134 | awp_loc_first = NULL; | |
12135 | rwp_loc_first = NULL; | |
12136 | ALL_BP_LOCATIONS (loc, locp) | |
12137 | { | |
12138 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12139 | non-NULL. */ | |
348d480f | 12140 | struct bp_location **loc_first_p; |
d3fbdd86 | 12141 | b = loc->owner; |
348d480f | 12142 | |
6f380991 | 12143 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12144 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12145 | /* Don't detect duplicate for tracepoint locations because they are |
12146 | never duplicated. See the comments in field `duplicate' of | |
12147 | `struct bp_location'. */ | |
348d480f | 12148 | || is_tracepoint (b)) |
b775012e LM |
12149 | { |
12150 | /* Clear the condition modification flag. */ | |
12151 | loc->condition_changed = condition_unchanged; | |
12152 | continue; | |
12153 | } | |
348d480f | 12154 | |
348d480f PA |
12155 | if (b->type == bp_hardware_watchpoint) |
12156 | loc_first_p = &wp_loc_first; | |
12157 | else if (b->type == bp_read_watchpoint) | |
12158 | loc_first_p = &rwp_loc_first; | |
12159 | else if (b->type == bp_access_watchpoint) | |
12160 | loc_first_p = &awp_loc_first; | |
12161 | else | |
12162 | loc_first_p = &bp_loc_first; | |
12163 | ||
12164 | if (*loc_first_p == NULL | |
12165 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12166 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12167 | { | |
12168 | *loc_first_p = loc; | |
12169 | loc->duplicate = 0; | |
b775012e LM |
12170 | |
12171 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12172 | { | |
12173 | loc->needs_update = 1; | |
12174 | /* Clear the condition modification flag. */ | |
12175 | loc->condition_changed = condition_unchanged; | |
12176 | } | |
348d480f PA |
12177 | continue; |
12178 | } | |
12179 | ||
934709f0 PW |
12180 | |
12181 | /* This and the above ensure the invariant that the first location | |
12182 | is not duplicated, and is the inserted one. | |
12183 | All following are marked as duplicated, and are not inserted. */ | |
12184 | if (loc->inserted) | |
12185 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12186 | loc->duplicate = 1; |
12187 | ||
b775012e LM |
12188 | /* Clear the condition modification flag. */ |
12189 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12190 | } |
12191 | ||
a25a5a45 | 12192 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12193 | { |
04086b45 | 12194 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12195 | insert_breakpoint_locations (); |
12196 | else | |
12197 | { | |
44702360 PA |
12198 | /* Even though the caller told us to not insert new |
12199 | locations, we may still need to update conditions on the | |
12200 | target's side of breakpoints that were already inserted | |
12201 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12202 | only update conditions for locations that are marked |
12203 | "needs_update". */ | |
12204 | update_inserted_breakpoint_locations (); | |
12205 | } | |
12206 | } | |
348d480f | 12207 | |
04086b45 | 12208 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12209 | download_tracepoint_locations (); |
348d480f PA |
12210 | } |
12211 | ||
12212 | void | |
12213 | breakpoint_retire_moribund (void) | |
12214 | { | |
12215 | struct bp_location *loc; | |
12216 | int ix; | |
12217 | ||
12218 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12219 | if (--(loc->events_till_retirement) == 0) | |
12220 | { | |
12221 | decref_bp_location (&loc); | |
12222 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12223 | --ix; | |
12224 | } | |
12225 | } | |
12226 | ||
12227 | static void | |
44702360 | 12228 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12229 | { |
348d480f | 12230 | |
492d29ea PA |
12231 | TRY |
12232 | { | |
12233 | update_global_location_list (insert_mode); | |
12234 | } | |
12235 | CATCH (e, RETURN_MASK_ERROR) | |
12236 | { | |
12237 | } | |
12238 | END_CATCH | |
348d480f PA |
12239 | } |
12240 | ||
12241 | /* Clear BKP from a BPS. */ | |
12242 | ||
12243 | static void | |
12244 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12245 | { | |
12246 | bpstat bs; | |
12247 | ||
12248 | for (bs = bps; bs; bs = bs->next) | |
12249 | if (bs->breakpoint_at == bpt) | |
12250 | { | |
12251 | bs->breakpoint_at = NULL; | |
12252 | bs->old_val = NULL; | |
12253 | /* bs->commands will be freed later. */ | |
12254 | } | |
12255 | } | |
12256 | ||
12257 | /* Callback for iterate_over_threads. */ | |
12258 | static int | |
12259 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12260 | { | |
9a3c8263 | 12261 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12262 | |
12263 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12264 | return 0; | |
12265 | } | |
12266 | ||
12267 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12268 | callbacks. */ | |
12269 | ||
12270 | static void | |
12271 | say_where (struct breakpoint *b) | |
12272 | { | |
12273 | struct value_print_options opts; | |
12274 | ||
12275 | get_user_print_options (&opts); | |
12276 | ||
12277 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12278 | single string. */ | |
12279 | if (b->loc == NULL) | |
12280 | { | |
f00aae0f KS |
12281 | /* For pending locations, the output differs slightly based |
12282 | on b->extra_string. If this is non-NULL, it contains either | |
12283 | a condition or dprintf arguments. */ | |
12284 | if (b->extra_string == NULL) | |
12285 | { | |
12286 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12287 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12288 | } |
12289 | else if (b->type == bp_dprintf) | |
12290 | { | |
12291 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12292 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12293 | b->extra_string); |
12294 | } | |
12295 | else | |
12296 | { | |
12297 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12298 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12299 | b->extra_string); |
12300 | } | |
348d480f PA |
12301 | } |
12302 | else | |
12303 | { | |
2f202fde | 12304 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12305 | { |
12306 | printf_filtered (" at "); | |
12307 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12308 | gdb_stdout); | |
12309 | } | |
2f202fde | 12310 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12311 | { |
12312 | /* If there is a single location, we can print the location | |
12313 | more nicely. */ | |
12314 | if (b->loc->next == NULL) | |
12315 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12316 | symtab_to_filename_for_display (b->loc->symtab), |
12317 | b->loc->line_number); | |
f8eba3c6 TT |
12318 | else |
12319 | /* This is not ideal, but each location may have a | |
12320 | different file name, and this at least reflects the | |
12321 | real situation somewhat. */ | |
f00aae0f | 12322 | printf_filtered (": %s.", |
d28cd78a | 12323 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12324 | } |
348d480f PA |
12325 | |
12326 | if (b->loc->next) | |
12327 | { | |
12328 | struct bp_location *loc = b->loc; | |
12329 | int n = 0; | |
12330 | for (; loc; loc = loc->next) | |
12331 | ++n; | |
12332 | printf_filtered (" (%d locations)", n); | |
12333 | } | |
12334 | } | |
12335 | } | |
12336 | ||
348d480f PA |
12337 | /* Default bp_location_ops methods. */ |
12338 | ||
12339 | static void | |
12340 | bp_location_dtor (struct bp_location *self) | |
12341 | { | |
348d480f PA |
12342 | xfree (self->function_name); |
12343 | } | |
12344 | ||
12345 | static const struct bp_location_ops bp_location_ops = | |
12346 | { | |
12347 | bp_location_dtor | |
12348 | }; | |
12349 | ||
c1fc2657 | 12350 | /* Destructor for the breakpoint base class. */ |
348d480f | 12351 | |
c1fc2657 | 12352 | breakpoint::~breakpoint () |
348d480f | 12353 | { |
c1fc2657 SM |
12354 | xfree (this->cond_string); |
12355 | xfree (this->extra_string); | |
12356 | xfree (this->filter); | |
348d480f PA |
12357 | } |
12358 | ||
2060206e PA |
12359 | static struct bp_location * |
12360 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12361 | { |
5625a286 | 12362 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12363 | } |
12364 | ||
2060206e PA |
12365 | static void |
12366 | base_breakpoint_re_set (struct breakpoint *b) | |
12367 | { | |
12368 | /* Nothing to re-set. */ | |
12369 | } | |
12370 | ||
12371 | #define internal_error_pure_virtual_called() \ | |
12372 | gdb_assert_not_reached ("pure virtual function called") | |
12373 | ||
12374 | static int | |
12375 | base_breakpoint_insert_location (struct bp_location *bl) | |
12376 | { | |
12377 | internal_error_pure_virtual_called (); | |
12378 | } | |
12379 | ||
12380 | static int | |
73971819 PA |
12381 | base_breakpoint_remove_location (struct bp_location *bl, |
12382 | enum remove_bp_reason reason) | |
2060206e PA |
12383 | { |
12384 | internal_error_pure_virtual_called (); | |
12385 | } | |
12386 | ||
12387 | static int | |
12388 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12389 | const address_space *aspace, |
09ac7c10 TT |
12390 | CORE_ADDR bp_addr, |
12391 | const struct target_waitstatus *ws) | |
2060206e PA |
12392 | { |
12393 | internal_error_pure_virtual_called (); | |
12394 | } | |
12395 | ||
12396 | static void | |
12397 | base_breakpoint_check_status (bpstat bs) | |
12398 | { | |
12399 | /* Always stop. */ | |
12400 | } | |
12401 | ||
12402 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12403 | errors. */ | |
12404 | ||
12405 | static int | |
12406 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12407 | { | |
12408 | internal_error_pure_virtual_called (); | |
12409 | } | |
12410 | ||
12411 | /* A "resources_needed" breakpoint_ops method that just internal | |
12412 | errors. */ | |
12413 | ||
12414 | static int | |
12415 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12416 | { | |
12417 | internal_error_pure_virtual_called (); | |
12418 | } | |
12419 | ||
12420 | static enum print_stop_action | |
12421 | base_breakpoint_print_it (bpstat bs) | |
12422 | { | |
12423 | internal_error_pure_virtual_called (); | |
12424 | } | |
12425 | ||
12426 | static void | |
12427 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12428 | struct ui_out *uiout) | |
12429 | { | |
12430 | /* nothing */ | |
12431 | } | |
12432 | ||
12433 | static void | |
12434 | base_breakpoint_print_mention (struct breakpoint *b) | |
12435 | { | |
12436 | internal_error_pure_virtual_called (); | |
12437 | } | |
12438 | ||
12439 | static void | |
12440 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12441 | { | |
12442 | internal_error_pure_virtual_called (); | |
12443 | } | |
12444 | ||
983af33b | 12445 | static void |
f00aae0f KS |
12446 | base_breakpoint_create_sals_from_location |
12447 | (const struct event_location *location, | |
12448 | struct linespec_result *canonical, | |
12449 | enum bptype type_wanted) | |
983af33b SDJ |
12450 | { |
12451 | internal_error_pure_virtual_called (); | |
12452 | } | |
12453 | ||
12454 | static void | |
12455 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12456 | struct linespec_result *c, | |
e1e01040 PA |
12457 | gdb::unique_xmalloc_ptr<char> cond_string, |
12458 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12459 | enum bptype type_wanted, |
12460 | enum bpdisp disposition, | |
12461 | int thread, | |
12462 | int task, int ignore_count, | |
12463 | const struct breakpoint_ops *o, | |
12464 | int from_tty, int enabled, | |
44f238bb | 12465 | int internal, unsigned flags) |
983af33b SDJ |
12466 | { |
12467 | internal_error_pure_virtual_called (); | |
12468 | } | |
12469 | ||
6c5b2ebe | 12470 | static std::vector<symtab_and_line> |
f00aae0f KS |
12471 | base_breakpoint_decode_location (struct breakpoint *b, |
12472 | const struct event_location *location, | |
6c5b2ebe | 12473 | struct program_space *search_pspace) |
983af33b SDJ |
12474 | { |
12475 | internal_error_pure_virtual_called (); | |
12476 | } | |
12477 | ||
ab04a2af TT |
12478 | /* The default 'explains_signal' method. */ |
12479 | ||
47591c29 | 12480 | static int |
427cd150 | 12481 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12482 | { |
47591c29 | 12483 | return 1; |
ab04a2af TT |
12484 | } |
12485 | ||
9d6e6e84 HZ |
12486 | /* The default "after_condition_true" method. */ |
12487 | ||
12488 | static void | |
12489 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12490 | { | |
12491 | /* Nothing to do. */ | |
12492 | } | |
12493 | ||
ab04a2af | 12494 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12495 | { |
2060206e PA |
12496 | base_breakpoint_allocate_location, |
12497 | base_breakpoint_re_set, | |
12498 | base_breakpoint_insert_location, | |
12499 | base_breakpoint_remove_location, | |
12500 | base_breakpoint_breakpoint_hit, | |
12501 | base_breakpoint_check_status, | |
12502 | base_breakpoint_resources_needed, | |
12503 | base_breakpoint_works_in_software_mode, | |
12504 | base_breakpoint_print_it, | |
12505 | NULL, | |
12506 | base_breakpoint_print_one_detail, | |
12507 | base_breakpoint_print_mention, | |
983af33b | 12508 | base_breakpoint_print_recreate, |
5f700d83 | 12509 | base_breakpoint_create_sals_from_location, |
983af33b | 12510 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12511 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12512 | base_breakpoint_explains_signal, |
12513 | base_breakpoint_after_condition_true, | |
2060206e PA |
12514 | }; |
12515 | ||
12516 | /* Default breakpoint_ops methods. */ | |
12517 | ||
12518 | static void | |
348d480f PA |
12519 | bkpt_re_set (struct breakpoint *b) |
12520 | { | |
06edf0c0 | 12521 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12522 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12523 | { |
f00aae0f | 12524 | /* Anything without a location can't be re-set. */ |
348d480f | 12525 | delete_breakpoint (b); |
06edf0c0 | 12526 | return; |
348d480f | 12527 | } |
06edf0c0 PA |
12528 | |
12529 | breakpoint_re_set_default (b); | |
348d480f PA |
12530 | } |
12531 | ||
2060206e | 12532 | static int |
348d480f PA |
12533 | bkpt_insert_location (struct bp_location *bl) |
12534 | { | |
cd6c3b4f YQ |
12535 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12536 | ||
579c6ad9 | 12537 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12538 | bl->target_info.placed_address = addr; |
12539 | ||
348d480f | 12540 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12541 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12542 | else |
7c16b83e | 12543 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12544 | } |
12545 | ||
2060206e | 12546 | static int |
73971819 | 12547 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12548 | { |
12549 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12550 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12551 | else | |
73971819 | 12552 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12553 | } |
12554 | ||
2060206e | 12555 | static int |
348d480f | 12556 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12557 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12558 | const struct target_waitstatus *ws) |
348d480f | 12559 | { |
09ac7c10 | 12560 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12561 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12562 | return 0; |
12563 | ||
348d480f PA |
12564 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12565 | aspace, bp_addr)) | |
12566 | return 0; | |
12567 | ||
12568 | if (overlay_debugging /* unmapped overlay section */ | |
12569 | && section_is_overlay (bl->section) | |
12570 | && !section_is_mapped (bl->section)) | |
12571 | return 0; | |
12572 | ||
12573 | return 1; | |
12574 | } | |
12575 | ||
cd1608cc PA |
12576 | static int |
12577 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12578 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12579 | const struct target_waitstatus *ws) |
12580 | { | |
12581 | if (dprintf_style == dprintf_style_agent | |
12582 | && target_can_run_breakpoint_commands ()) | |
12583 | { | |
12584 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12585 | for this address it must be for a breakpoint that happens to | |
12586 | be set at the same address. */ | |
12587 | return 0; | |
12588 | } | |
12589 | ||
12590 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12591 | } | |
12592 | ||
2060206e | 12593 | static int |
348d480f PA |
12594 | bkpt_resources_needed (const struct bp_location *bl) |
12595 | { | |
12596 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12597 | ||
12598 | return 1; | |
12599 | } | |
12600 | ||
2060206e | 12601 | static enum print_stop_action |
348d480f PA |
12602 | bkpt_print_it (bpstat bs) |
12603 | { | |
348d480f PA |
12604 | struct breakpoint *b; |
12605 | const struct bp_location *bl; | |
001c8c33 | 12606 | int bp_temp; |
79a45e25 | 12607 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12608 | |
12609 | gdb_assert (bs->bp_location_at != NULL); | |
12610 | ||
12611 | bl = bs->bp_location_at; | |
12612 | b = bs->breakpoint_at; | |
12613 | ||
001c8c33 PA |
12614 | bp_temp = b->disposition == disp_del; |
12615 | if (bl->address != bl->requested_address) | |
12616 | breakpoint_adjustment_warning (bl->requested_address, | |
12617 | bl->address, | |
12618 | b->number, 1); | |
12619 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12620 | maybe_print_thread_hit_breakpoint (uiout); |
12621 | ||
001c8c33 | 12622 | if (bp_temp) |
112e8700 | 12623 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12624 | else |
112e8700 SM |
12625 | uiout->text ("Breakpoint "); |
12626 | if (uiout->is_mi_like_p ()) | |
348d480f | 12627 | { |
112e8700 | 12628 | uiout->field_string ("reason", |
001c8c33 | 12629 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12630 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12631 | } |
112e8700 SM |
12632 | uiout->field_int ("bkptno", b->number); |
12633 | uiout->text (", "); | |
06edf0c0 | 12634 | |
001c8c33 | 12635 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12636 | } |
12637 | ||
2060206e | 12638 | static void |
06edf0c0 PA |
12639 | bkpt_print_mention (struct breakpoint *b) |
12640 | { | |
112e8700 | 12641 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12642 | return; |
12643 | ||
12644 | switch (b->type) | |
12645 | { | |
12646 | case bp_breakpoint: | |
12647 | case bp_gnu_ifunc_resolver: | |
12648 | if (b->disposition == disp_del) | |
12649 | printf_filtered (_("Temporary breakpoint")); | |
12650 | else | |
12651 | printf_filtered (_("Breakpoint")); | |
12652 | printf_filtered (_(" %d"), b->number); | |
12653 | if (b->type == bp_gnu_ifunc_resolver) | |
12654 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12655 | break; | |
12656 | case bp_hardware_breakpoint: | |
12657 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12658 | break; | |
e7e0cddf SS |
12659 | case bp_dprintf: |
12660 | printf_filtered (_("Dprintf %d"), b->number); | |
12661 | break; | |
06edf0c0 PA |
12662 | } |
12663 | ||
12664 | say_where (b); | |
12665 | } | |
12666 | ||
2060206e | 12667 | static void |
06edf0c0 PA |
12668 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12669 | { | |
12670 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12671 | fprintf_unfiltered (fp, "tbreak"); | |
12672 | else if (tp->type == bp_breakpoint) | |
12673 | fprintf_unfiltered (fp, "break"); | |
12674 | else if (tp->type == bp_hardware_breakpoint | |
12675 | && tp->disposition == disp_del) | |
12676 | fprintf_unfiltered (fp, "thbreak"); | |
12677 | else if (tp->type == bp_hardware_breakpoint) | |
12678 | fprintf_unfiltered (fp, "hbreak"); | |
12679 | else | |
12680 | internal_error (__FILE__, __LINE__, | |
12681 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12682 | ||
f00aae0f | 12683 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12684 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12685 | |
12686 | /* Print out extra_string if this breakpoint is pending. It might | |
12687 | contain, for example, conditions that were set by the user. */ | |
12688 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12689 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12690 | ||
dd11a36c | 12691 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12692 | } |
12693 | ||
983af33b | 12694 | static void |
f00aae0f KS |
12695 | bkpt_create_sals_from_location (const struct event_location *location, |
12696 | struct linespec_result *canonical, | |
12697 | enum bptype type_wanted) | |
983af33b | 12698 | { |
f00aae0f | 12699 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12700 | } |
12701 | ||
12702 | static void | |
12703 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12704 | struct linespec_result *canonical, | |
e1e01040 PA |
12705 | gdb::unique_xmalloc_ptr<char> cond_string, |
12706 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12707 | enum bptype type_wanted, |
12708 | enum bpdisp disposition, | |
12709 | int thread, | |
12710 | int task, int ignore_count, | |
12711 | const struct breakpoint_ops *ops, | |
12712 | int from_tty, int enabled, | |
44f238bb | 12713 | int internal, unsigned flags) |
983af33b | 12714 | { |
023fa29b | 12715 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12716 | std::move (cond_string), |
12717 | std::move (extra_string), | |
e7e0cddf | 12718 | type_wanted, |
983af33b SDJ |
12719 | disposition, thread, task, |
12720 | ignore_count, ops, from_tty, | |
44f238bb | 12721 | enabled, internal, flags); |
983af33b SDJ |
12722 | } |
12723 | ||
6c5b2ebe | 12724 | static std::vector<symtab_and_line> |
f00aae0f KS |
12725 | bkpt_decode_location (struct breakpoint *b, |
12726 | const struct event_location *location, | |
6c5b2ebe | 12727 | struct program_space *search_pspace) |
983af33b | 12728 | { |
6c5b2ebe | 12729 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12730 | } |
12731 | ||
06edf0c0 PA |
12732 | /* Virtual table for internal breakpoints. */ |
12733 | ||
12734 | static void | |
12735 | internal_bkpt_re_set (struct breakpoint *b) | |
12736 | { | |
12737 | switch (b->type) | |
12738 | { | |
12739 | /* Delete overlay event and longjmp master breakpoints; they | |
12740 | will be reset later by breakpoint_re_set. */ | |
12741 | case bp_overlay_event: | |
12742 | case bp_longjmp_master: | |
12743 | case bp_std_terminate_master: | |
12744 | case bp_exception_master: | |
12745 | delete_breakpoint (b); | |
12746 | break; | |
12747 | ||
12748 | /* This breakpoint is special, it's set up when the inferior | |
12749 | starts and we really don't want to touch it. */ | |
12750 | case bp_shlib_event: | |
12751 | ||
12752 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12753 | it is set up, we do not want to touch it. */ | |
12754 | case bp_thread_event: | |
12755 | break; | |
12756 | } | |
12757 | } | |
12758 | ||
12759 | static void | |
12760 | internal_bkpt_check_status (bpstat bs) | |
12761 | { | |
a9b3a50f PA |
12762 | if (bs->breakpoint_at->type == bp_shlib_event) |
12763 | { | |
12764 | /* If requested, stop when the dynamic linker notifies GDB of | |
12765 | events. This allows the user to get control and place | |
12766 | breakpoints in initializer routines for dynamically loaded | |
12767 | objects (among other things). */ | |
12768 | bs->stop = stop_on_solib_events; | |
12769 | bs->print = stop_on_solib_events; | |
12770 | } | |
12771 | else | |
12772 | bs->stop = 0; | |
06edf0c0 PA |
12773 | } |
12774 | ||
12775 | static enum print_stop_action | |
12776 | internal_bkpt_print_it (bpstat bs) | |
12777 | { | |
06edf0c0 | 12778 | struct breakpoint *b; |
06edf0c0 | 12779 | |
06edf0c0 PA |
12780 | b = bs->breakpoint_at; |
12781 | ||
06edf0c0 PA |
12782 | switch (b->type) |
12783 | { | |
348d480f PA |
12784 | case bp_shlib_event: |
12785 | /* Did we stop because the user set the stop_on_solib_events | |
12786 | variable? (If so, we report this as a generic, "Stopped due | |
12787 | to shlib event" message.) */ | |
edcc5120 | 12788 | print_solib_event (0); |
348d480f PA |
12789 | break; |
12790 | ||
12791 | case bp_thread_event: | |
12792 | /* Not sure how we will get here. | |
12793 | GDB should not stop for these breakpoints. */ | |
12794 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12795 | break; |
12796 | ||
12797 | case bp_overlay_event: | |
12798 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12799 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12800 | break; |
12801 | ||
12802 | case bp_longjmp_master: | |
12803 | /* These should never be enabled. */ | |
12804 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12805 | break; |
12806 | ||
12807 | case bp_std_terminate_master: | |
12808 | /* These should never be enabled. */ | |
12809 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12810 | "gdb should not stop!\n")); | |
348d480f PA |
12811 | break; |
12812 | ||
12813 | case bp_exception_master: | |
12814 | /* These should never be enabled. */ | |
12815 | printf_filtered (_("Exception Master Breakpoint: " | |
12816 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12817 | break; |
12818 | } | |
12819 | ||
001c8c33 | 12820 | return PRINT_NOTHING; |
06edf0c0 PA |
12821 | } |
12822 | ||
12823 | static void | |
12824 | internal_bkpt_print_mention (struct breakpoint *b) | |
12825 | { | |
12826 | /* Nothing to mention. These breakpoints are internal. */ | |
12827 | } | |
12828 | ||
06edf0c0 PA |
12829 | /* Virtual table for momentary breakpoints */ |
12830 | ||
12831 | static void | |
12832 | momentary_bkpt_re_set (struct breakpoint *b) | |
12833 | { | |
12834 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12835 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12836 | Otherwise these should have been blown away via the cleanup chain |
12837 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12838 | } | |
12839 | ||
12840 | static void | |
12841 | momentary_bkpt_check_status (bpstat bs) | |
12842 | { | |
12843 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12844 | } | |
12845 | ||
12846 | static enum print_stop_action | |
12847 | momentary_bkpt_print_it (bpstat bs) | |
12848 | { | |
001c8c33 | 12849 | return PRINT_UNKNOWN; |
348d480f PA |
12850 | } |
12851 | ||
06edf0c0 PA |
12852 | static void |
12853 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12854 | { |
06edf0c0 | 12855 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12856 | } |
12857 | ||
e2e4d78b JK |
12858 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12859 | ||
12860 | It gets cleared already on the removal of the first one of such placed | |
12861 | breakpoints. This is OK as they get all removed altogether. */ | |
12862 | ||
c1fc2657 | 12863 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12864 | { |
c1fc2657 | 12865 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12866 | |
c1fc2657 | 12867 | if (tp != NULL) |
e2e4d78b | 12868 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12869 | } |
12870 | ||
55aa24fb SDJ |
12871 | /* Specific methods for probe breakpoints. */ |
12872 | ||
12873 | static int | |
12874 | bkpt_probe_insert_location (struct bp_location *bl) | |
12875 | { | |
12876 | int v = bkpt_insert_location (bl); | |
12877 | ||
12878 | if (v == 0) | |
12879 | { | |
12880 | /* The insertion was successful, now let's set the probe's semaphore | |
12881 | if needed. */ | |
0ea5cda8 SDJ |
12882 | if (bl->probe.probe->pops->set_semaphore != NULL) |
12883 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
12884 | bl->probe.objfile, | |
12885 | bl->gdbarch); | |
55aa24fb SDJ |
12886 | } |
12887 | ||
12888 | return v; | |
12889 | } | |
12890 | ||
12891 | static int | |
73971819 PA |
12892 | bkpt_probe_remove_location (struct bp_location *bl, |
12893 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12894 | { |
12895 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
12896 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
12897 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
12898 | bl->probe.objfile, | |
12899 | bl->gdbarch); | |
55aa24fb | 12900 | |
73971819 | 12901 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12902 | } |
12903 | ||
12904 | static void | |
f00aae0f | 12905 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12906 | struct linespec_result *canonical, |
f00aae0f | 12907 | enum bptype type_wanted) |
55aa24fb SDJ |
12908 | { |
12909 | struct linespec_sals lsal; | |
12910 | ||
c2f4122d | 12911 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12912 | lsal.canonical |
12913 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12914 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12915 | } |
12916 | ||
6c5b2ebe | 12917 | static std::vector<symtab_and_line> |
f00aae0f KS |
12918 | bkpt_probe_decode_location (struct breakpoint *b, |
12919 | const struct event_location *location, | |
6c5b2ebe | 12920 | struct program_space *search_pspace) |
55aa24fb | 12921 | { |
6c5b2ebe PA |
12922 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12923 | if (sals.empty ()) | |
55aa24fb | 12924 | error (_("probe not found")); |
6c5b2ebe | 12925 | return sals; |
55aa24fb SDJ |
12926 | } |
12927 | ||
348d480f | 12928 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12929 | |
348d480f PA |
12930 | static void |
12931 | tracepoint_re_set (struct breakpoint *b) | |
12932 | { | |
12933 | breakpoint_re_set_default (b); | |
12934 | } | |
876fa593 | 12935 | |
348d480f PA |
12936 | static int |
12937 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12938 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12939 | const struct target_waitstatus *ws) |
348d480f PA |
12940 | { |
12941 | /* By definition, the inferior does not report stops at | |
12942 | tracepoints. */ | |
12943 | return 0; | |
74960c60 VP |
12944 | } |
12945 | ||
12946 | static void | |
348d480f PA |
12947 | tracepoint_print_one_detail (const struct breakpoint *self, |
12948 | struct ui_out *uiout) | |
74960c60 | 12949 | { |
d9b3f62e PA |
12950 | struct tracepoint *tp = (struct tracepoint *) self; |
12951 | if (tp->static_trace_marker_id) | |
348d480f PA |
12952 | { |
12953 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12954 | |
112e8700 SM |
12955 | uiout->text ("\tmarker id is "); |
12956 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12957 | tp->static_trace_marker_id); |
112e8700 | 12958 | uiout->text ("\n"); |
348d480f | 12959 | } |
0d381245 VP |
12960 | } |
12961 | ||
a474d7c2 | 12962 | static void |
348d480f | 12963 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12964 | { |
112e8700 | 12965 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12966 | return; |
cc59ec59 | 12967 | |
348d480f PA |
12968 | switch (b->type) |
12969 | { | |
12970 | case bp_tracepoint: | |
12971 | printf_filtered (_("Tracepoint")); | |
12972 | printf_filtered (_(" %d"), b->number); | |
12973 | break; | |
12974 | case bp_fast_tracepoint: | |
12975 | printf_filtered (_("Fast tracepoint")); | |
12976 | printf_filtered (_(" %d"), b->number); | |
12977 | break; | |
12978 | case bp_static_tracepoint: | |
12979 | printf_filtered (_("Static tracepoint")); | |
12980 | printf_filtered (_(" %d"), b->number); | |
12981 | break; | |
12982 | default: | |
12983 | internal_error (__FILE__, __LINE__, | |
12984 | _("unhandled tracepoint type %d"), (int) b->type); | |
12985 | } | |
12986 | ||
12987 | say_where (b); | |
a474d7c2 PA |
12988 | } |
12989 | ||
348d480f | 12990 | static void |
d9b3f62e | 12991 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12992 | { |
d9b3f62e PA |
12993 | struct tracepoint *tp = (struct tracepoint *) self; |
12994 | ||
12995 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12996 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12997 | else if (self->type == bp_static_tracepoint) |
348d480f | 12998 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12999 | else if (self->type == bp_tracepoint) |
348d480f PA |
13000 | fprintf_unfiltered (fp, "trace"); |
13001 | else | |
13002 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13003 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13004 | |
f00aae0f | 13005 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13006 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13007 | print_recreate_thread (self, fp); |
13008 | ||
13009 | if (tp->pass_count) | |
13010 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13011 | } |
13012 | ||
983af33b | 13013 | static void |
f00aae0f KS |
13014 | tracepoint_create_sals_from_location (const struct event_location *location, |
13015 | struct linespec_result *canonical, | |
13016 | enum bptype type_wanted) | |
983af33b | 13017 | { |
f00aae0f | 13018 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13019 | } |
13020 | ||
13021 | static void | |
13022 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13023 | struct linespec_result *canonical, | |
e1e01040 PA |
13024 | gdb::unique_xmalloc_ptr<char> cond_string, |
13025 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13026 | enum bptype type_wanted, |
13027 | enum bpdisp disposition, | |
13028 | int thread, | |
13029 | int task, int ignore_count, | |
13030 | const struct breakpoint_ops *ops, | |
13031 | int from_tty, int enabled, | |
44f238bb | 13032 | int internal, unsigned flags) |
983af33b | 13033 | { |
023fa29b | 13034 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13035 | std::move (cond_string), |
13036 | std::move (extra_string), | |
e7e0cddf | 13037 | type_wanted, |
983af33b SDJ |
13038 | disposition, thread, task, |
13039 | ignore_count, ops, from_tty, | |
44f238bb | 13040 | enabled, internal, flags); |
983af33b SDJ |
13041 | } |
13042 | ||
6c5b2ebe | 13043 | static std::vector<symtab_and_line> |
f00aae0f KS |
13044 | tracepoint_decode_location (struct breakpoint *b, |
13045 | const struct event_location *location, | |
6c5b2ebe | 13046 | struct program_space *search_pspace) |
983af33b | 13047 | { |
6c5b2ebe | 13048 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13049 | } |
13050 | ||
2060206e | 13051 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13052 | |
55aa24fb SDJ |
13053 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13054 | static probe. */ | |
13055 | ||
13056 | static void | |
f00aae0f KS |
13057 | tracepoint_probe_create_sals_from_location |
13058 | (const struct event_location *location, | |
13059 | struct linespec_result *canonical, | |
13060 | enum bptype type_wanted) | |
55aa24fb SDJ |
13061 | { |
13062 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13063 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13064 | } |
13065 | ||
6c5b2ebe | 13066 | static std::vector<symtab_and_line> |
f00aae0f KS |
13067 | tracepoint_probe_decode_location (struct breakpoint *b, |
13068 | const struct event_location *location, | |
6c5b2ebe | 13069 | struct program_space *search_pspace) |
55aa24fb SDJ |
13070 | { |
13071 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13072 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13073 | } |
13074 | ||
13075 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13076 | ||
5c2b4418 HZ |
13077 | /* Dprintf breakpoint_ops methods. */ |
13078 | ||
13079 | static void | |
13080 | dprintf_re_set (struct breakpoint *b) | |
13081 | { | |
13082 | breakpoint_re_set_default (b); | |
13083 | ||
f00aae0f KS |
13084 | /* extra_string should never be non-NULL for dprintf. */ |
13085 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13086 | |
13087 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13088 | 2 - create a dprintf, which resolves fine. | |
13089 | 3 - disconnect from target 1 | |
13090 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13091 | ||
13092 | After steps #3/#4, you'll want the dprintf command list to | |
13093 | be updated, because target 1 and 2 may well return different | |
13094 | answers for target_can_run_breakpoint_commands(). | |
13095 | Given absence of finer grained resetting, we get to do | |
13096 | it all the time. */ | |
13097 | if (b->extra_string != NULL) | |
13098 | update_dprintf_command_list (b); | |
13099 | } | |
13100 | ||
2d9442cc HZ |
13101 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13102 | ||
13103 | static void | |
13104 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13105 | { | |
f00aae0f | 13106 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13107 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13108 | tp->extra_string); |
13109 | print_recreate_thread (tp, fp); | |
13110 | } | |
13111 | ||
9d6e6e84 HZ |
13112 | /* Implement the "after_condition_true" breakpoint_ops method for |
13113 | dprintf. | |
13114 | ||
13115 | dprintf's are implemented with regular commands in their command | |
13116 | list, but we run the commands here instead of before presenting the | |
13117 | stop to the user, as dprintf's don't actually cause a stop. This | |
13118 | also makes it so that the commands of multiple dprintfs at the same | |
13119 | address are all handled. */ | |
13120 | ||
13121 | static void | |
13122 | dprintf_after_condition_true (struct bpstats *bs) | |
13123 | { | |
04afa70c | 13124 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13125 | struct bpstats *tmp_bs_p = &tmp_bs; |
13126 | ||
13127 | /* dprintf's never cause a stop. This wasn't set in the | |
13128 | check_status hook instead because that would make the dprintf's | |
13129 | condition not be evaluated. */ | |
13130 | bs->stop = 0; | |
13131 | ||
13132 | /* Run the command list here. Take ownership of it instead of | |
13133 | copying. We never want these commands to run later in | |
13134 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13135 | be set at same address as this dprintf, or even if running the | |
13136 | commands here throws. */ | |
13137 | tmp_bs.commands = bs->commands; | |
13138 | bs->commands = NULL; | |
9d6e6e84 HZ |
13139 | |
13140 | bpstat_do_actions_1 (&tmp_bs_p); | |
13141 | ||
13142 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13143 | bpstat_do_actions_1 may return early without processing the whole | |
13144 | list. */ | |
9d6e6e84 HZ |
13145 | } |
13146 | ||
983af33b SDJ |
13147 | /* The breakpoint_ops structure to be used on static tracepoints with |
13148 | markers (`-m'). */ | |
13149 | ||
13150 | static void | |
f00aae0f | 13151 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13152 | struct linespec_result *canonical, |
f00aae0f | 13153 | enum bptype type_wanted) |
983af33b SDJ |
13154 | { |
13155 | struct linespec_sals lsal; | |
f00aae0f | 13156 | const char *arg_start, *arg; |
983af33b | 13157 | |
f00aae0f KS |
13158 | arg = arg_start = get_linespec_location (location); |
13159 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13160 | |
f2fc3015 TT |
13161 | std::string str (arg_start, arg - arg_start); |
13162 | const char *ptr = str.c_str (); | |
13163 | canonical->location = new_linespec_location (&ptr); | |
983af33b | 13164 | |
8e9e35b1 TT |
13165 | lsal.canonical |
13166 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13167 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13168 | } |
13169 | ||
13170 | static void | |
13171 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13172 | struct linespec_result *canonical, | |
e1e01040 PA |
13173 | gdb::unique_xmalloc_ptr<char> cond_string, |
13174 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13175 | enum bptype type_wanted, |
13176 | enum bpdisp disposition, | |
13177 | int thread, | |
13178 | int task, int ignore_count, | |
13179 | const struct breakpoint_ops *ops, | |
13180 | int from_tty, int enabled, | |
44f238bb | 13181 | int internal, unsigned flags) |
983af33b | 13182 | { |
6c5b2ebe | 13183 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13184 | |
13185 | /* If the user is creating a static tracepoint by marker id | |
13186 | (strace -m MARKER_ID), then store the sals index, so that | |
13187 | breakpoint_re_set can try to match up which of the newly | |
13188 | found markers corresponds to this one, and, don't try to | |
13189 | expand multiple locations for each sal, given than SALS | |
13190 | already should contain all sals for MARKER_ID. */ | |
13191 | ||
6c5b2ebe | 13192 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13193 | { |
6c5b2ebe PA |
13194 | event_location_up location |
13195 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13196 | |
b270e6f9 | 13197 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13198 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13199 | std::move (location), NULL, |
e1e01040 PA |
13200 | std::move (cond_string), |
13201 | std::move (extra_string), | |
e7e0cddf | 13202 | type_wanted, disposition, |
983af33b | 13203 | thread, task, ignore_count, ops, |
44f238bb | 13204 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13205 | canonical->special_display); |
13206 | /* Given that its possible to have multiple markers with | |
13207 | the same string id, if the user is creating a static | |
13208 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13209 | store the sals index, so that breakpoint_re_set can | |
13210 | try to match up which of the newly found markers | |
13211 | corresponds to this one */ | |
13212 | tp->static_trace_marker_id_idx = i; | |
13213 | ||
b270e6f9 | 13214 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13215 | } |
13216 | } | |
13217 | ||
6c5b2ebe | 13218 | static std::vector<symtab_and_line> |
f00aae0f KS |
13219 | strace_marker_decode_location (struct breakpoint *b, |
13220 | const struct event_location *location, | |
6c5b2ebe | 13221 | struct program_space *search_pspace) |
983af33b SDJ |
13222 | { |
13223 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13224 | const char *s = get_linespec_location (location); |
983af33b | 13225 | |
6c5b2ebe PA |
13226 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13227 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13228 | { |
6c5b2ebe PA |
13229 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13230 | sals.resize (1); | |
13231 | return sals; | |
983af33b SDJ |
13232 | } |
13233 | else | |
13234 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13235 | } | |
13236 | ||
13237 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13238 | ||
13239 | static int | |
13240 | strace_marker_p (struct breakpoint *b) | |
13241 | { | |
13242 | return b->ops == &strace_marker_breakpoint_ops; | |
13243 | } | |
13244 | ||
53a5351d | 13245 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13246 | structures. */ |
c906108c SS |
13247 | |
13248 | void | |
fba45db2 | 13249 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13250 | { |
52f0bd74 | 13251 | struct breakpoint *b; |
c906108c | 13252 | |
8a3fe4f8 | 13253 | gdb_assert (bpt != NULL); |
c906108c | 13254 | |
4a64f543 MS |
13255 | /* Has this bp already been deleted? This can happen because |
13256 | multiple lists can hold pointers to bp's. bpstat lists are | |
13257 | especial culprits. | |
13258 | ||
13259 | One example of this happening is a watchpoint's scope bp. When | |
13260 | the scope bp triggers, we notice that the watchpoint is out of | |
13261 | scope, and delete it. We also delete its scope bp. But the | |
13262 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13263 | That bpstat is then checked for auto-deleting bp's, which are | |
13264 | deleted. | |
13265 | ||
13266 | A real solution to this problem might involve reference counts in | |
13267 | bp's, and/or giving them pointers back to their referencing | |
13268 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13269 | storage when no more references were extent. A cheaper bandaid | |
13270 | was chosen. */ | |
c906108c SS |
13271 | if (bpt->type == bp_none) |
13272 | return; | |
13273 | ||
4a64f543 MS |
13274 | /* At least avoid this stale reference until the reference counting |
13275 | of breakpoints gets resolved. */ | |
d0fb5eae | 13276 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13277 | { |
d0fb5eae | 13278 | struct breakpoint *related; |
3a5c3e22 | 13279 | struct watchpoint *w; |
d0fb5eae JK |
13280 | |
13281 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13282 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13283 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13284 | w = (struct watchpoint *) bpt; |
13285 | else | |
13286 | w = NULL; | |
13287 | if (w != NULL) | |
13288 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13289 | |
13290 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13291 | for (related = bpt; related->related_breakpoint != bpt; | |
13292 | related = related->related_breakpoint); | |
13293 | related->related_breakpoint = bpt->related_breakpoint; | |
13294 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13295 | } |
13296 | ||
a9634178 TJB |
13297 | /* watch_command_1 creates a watchpoint but only sets its number if |
13298 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13299 | a problem in that process, we'll be asked to delete the half-created | |
13300 | watchpoint. In that case, don't announce the deletion. */ | |
13301 | if (bpt->number) | |
13302 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13303 | |
c906108c SS |
13304 | if (breakpoint_chain == bpt) |
13305 | breakpoint_chain = bpt->next; | |
13306 | ||
c906108c SS |
13307 | ALL_BREAKPOINTS (b) |
13308 | if (b->next == bpt) | |
c5aa993b JM |
13309 | { |
13310 | b->next = bpt->next; | |
13311 | break; | |
13312 | } | |
c906108c | 13313 | |
f431efe5 PA |
13314 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13315 | been freed. */ | |
13316 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13317 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13318 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13319 | commands are associated with the bpstat; if we remove it here, | |
13320 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13321 | event-top.c won't do anything, and temporary breakpoints with | |
13322 | commands won't work. */ | |
13323 | ||
13324 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13325 | ||
4a64f543 MS |
13326 | /* Now that breakpoint is removed from breakpoint list, update the |
13327 | global location list. This will remove locations that used to | |
13328 | belong to this breakpoint. Do this before freeing the breakpoint | |
13329 | itself, since remove_breakpoint looks at location's owner. It | |
13330 | might be better design to have location completely | |
13331 | self-contained, but it's not the case now. */ | |
44702360 | 13332 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13333 | |
4a64f543 MS |
13334 | /* On the chance that someone will soon try again to delete this |
13335 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13336 | bpt->type = bp_none; |
4d01a485 | 13337 | delete bpt; |
c906108c SS |
13338 | } |
13339 | ||
51be5b68 PA |
13340 | /* Iterator function to call a user-provided callback function once |
13341 | for each of B and its related breakpoints. */ | |
13342 | ||
13343 | static void | |
13344 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13345 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13346 | { |
13347 | struct breakpoint *related; | |
13348 | ||
13349 | related = b; | |
13350 | do | |
13351 | { | |
13352 | struct breakpoint *next; | |
13353 | ||
13354 | /* FUNCTION may delete RELATED. */ | |
13355 | next = related->related_breakpoint; | |
13356 | ||
13357 | if (next == related) | |
13358 | { | |
13359 | /* RELATED is the last ring entry. */ | |
48649e1b | 13360 | function (related); |
51be5b68 PA |
13361 | |
13362 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13363 | B. There's nothing left to do anyway, so just break | |
13364 | out. */ | |
13365 | break; | |
13366 | } | |
13367 | else | |
48649e1b | 13368 | function (related); |
51be5b68 PA |
13369 | |
13370 | related = next; | |
13371 | } | |
13372 | while (related != b); | |
13373 | } | |
95a42b64 | 13374 | |
4495129a | 13375 | static void |
981a3fb3 | 13376 | delete_command (const char *arg, int from_tty) |
c906108c | 13377 | { |
35df4500 | 13378 | struct breakpoint *b, *b_tmp; |
c906108c | 13379 | |
ea9365bb TT |
13380 | dont_repeat (); |
13381 | ||
c906108c SS |
13382 | if (arg == 0) |
13383 | { | |
13384 | int breaks_to_delete = 0; | |
13385 | ||
46c6471b PA |
13386 | /* Delete all breakpoints if no argument. Do not delete |
13387 | internal breakpoints, these have to be deleted with an | |
13388 | explicit breakpoint number argument. */ | |
c5aa993b | 13389 | ALL_BREAKPOINTS (b) |
46c6471b | 13390 | if (user_breakpoint_p (b)) |
973d738b DJ |
13391 | { |
13392 | breaks_to_delete = 1; | |
13393 | break; | |
13394 | } | |
c906108c SS |
13395 | |
13396 | /* Ask user only if there are some breakpoints to delete. */ | |
13397 | if (!from_tty | |
e2e0b3e5 | 13398 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13399 | { |
35df4500 | 13400 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13401 | if (user_breakpoint_p (b)) |
c5aa993b | 13402 | delete_breakpoint (b); |
c906108c SS |
13403 | } |
13404 | } | |
13405 | else | |
48649e1b TT |
13406 | map_breakpoint_numbers |
13407 | (arg, [&] (breakpoint *b) | |
13408 | { | |
13409 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13410 | }); | |
c906108c SS |
13411 | } |
13412 | ||
c2f4122d PA |
13413 | /* Return true if all locations of B bound to PSPACE are pending. If |
13414 | PSPACE is NULL, all locations of all program spaces are | |
13415 | considered. */ | |
13416 | ||
0d381245 | 13417 | static int |
c2f4122d | 13418 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13419 | { |
c2f4122d PA |
13420 | struct bp_location *loc; |
13421 | ||
13422 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13423 | if ((pspace == NULL | |
13424 | || loc->pspace == pspace) | |
13425 | && !loc->shlib_disabled | |
8645ff69 | 13426 | && !loc->pspace->executing_startup) |
0d381245 VP |
13427 | return 0; |
13428 | return 1; | |
fe3f5fa8 VP |
13429 | } |
13430 | ||
776592bf DE |
13431 | /* Subroutine of update_breakpoint_locations to simplify it. |
13432 | Return non-zero if multiple fns in list LOC have the same name. | |
13433 | Null names are ignored. */ | |
13434 | ||
13435 | static int | |
13436 | ambiguous_names_p (struct bp_location *loc) | |
13437 | { | |
13438 | struct bp_location *l; | |
13439 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13440 | (int (*) (const void *, |
13441 | const void *)) streq, | |
776592bf DE |
13442 | NULL, xcalloc, xfree); |
13443 | ||
13444 | for (l = loc; l != NULL; l = l->next) | |
13445 | { | |
13446 | const char **slot; | |
13447 | const char *name = l->function_name; | |
13448 | ||
13449 | /* Allow for some names to be NULL, ignore them. */ | |
13450 | if (name == NULL) | |
13451 | continue; | |
13452 | ||
13453 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13454 | INSERT); | |
4a64f543 MS |
13455 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13456 | returns NULL. */ | |
776592bf DE |
13457 | if (*slot != NULL) |
13458 | { | |
13459 | htab_delete (htab); | |
13460 | return 1; | |
13461 | } | |
13462 | *slot = name; | |
13463 | } | |
13464 | ||
13465 | htab_delete (htab); | |
13466 | return 0; | |
13467 | } | |
13468 | ||
0fb4aa4b PA |
13469 | /* When symbols change, it probably means the sources changed as well, |
13470 | and it might mean the static tracepoint markers are no longer at | |
13471 | the same address or line numbers they used to be at last we | |
13472 | checked. Losing your static tracepoints whenever you rebuild is | |
13473 | undesirable. This function tries to resync/rematch gdb static | |
13474 | tracepoints with the markers on the target, for static tracepoints | |
13475 | that have not been set by marker id. Static tracepoint that have | |
13476 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13477 | The heuristic is: | |
13478 | ||
13479 | 1) For a tracepoint set at a specific address, look for a marker at | |
13480 | the old PC. If one is found there, assume to be the same marker. | |
13481 | If the name / string id of the marker found is different from the | |
13482 | previous known name, assume that means the user renamed the marker | |
13483 | in the sources, and output a warning. | |
13484 | ||
13485 | 2) For a tracepoint set at a given line number, look for a marker | |
13486 | at the new address of the old line number. If one is found there, | |
13487 | assume to be the same marker. If the name / string id of the | |
13488 | marker found is different from the previous known name, assume that | |
13489 | means the user renamed the marker in the sources, and output a | |
13490 | warning. | |
13491 | ||
13492 | 3) If a marker is no longer found at the same address or line, it | |
13493 | may mean the marker no longer exists. But it may also just mean | |
13494 | the code changed a bit. Maybe the user added a few lines of code | |
13495 | that made the marker move up or down (in line number terms). Ask | |
13496 | the target for info about the marker with the string id as we knew | |
13497 | it. If found, update line number and address in the matching | |
13498 | static tracepoint. This will get confused if there's more than one | |
13499 | marker with the same ID (possible in UST, although unadvised | |
13500 | precisely because it confuses tools). */ | |
13501 | ||
13502 | static struct symtab_and_line | |
13503 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13504 | { | |
d9b3f62e | 13505 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13506 | struct static_tracepoint_marker marker; |
13507 | CORE_ADDR pc; | |
0fb4aa4b PA |
13508 | |
13509 | pc = sal.pc; | |
13510 | if (sal.line) | |
13511 | find_line_pc (sal.symtab, sal.line, &pc); | |
13512 | ||
13513 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13514 | { | |
d9b3f62e | 13515 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13516 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13517 | b->number, | |
d9b3f62e | 13518 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13519 | |
d9b3f62e PA |
13520 | xfree (tp->static_trace_marker_id); |
13521 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13522 | release_static_tracepoint_marker (&marker); |
13523 | ||
13524 | return sal; | |
13525 | } | |
13526 | ||
13527 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13528 | by string ID. */ | |
13529 | if (!sal.explicit_pc | |
13530 | && sal.line != 0 | |
13531 | && sal.symtab != NULL | |
d9b3f62e | 13532 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13533 | { |
13534 | VEC(static_tracepoint_marker_p) *markers; | |
13535 | ||
13536 | markers | |
d9b3f62e | 13537 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13538 | |
13539 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13540 | { | |
0fb4aa4b | 13541 | struct symbol *sym; |
80e1d417 | 13542 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13543 | struct ui_out *uiout = current_uiout; |
67994074 | 13544 | struct explicit_location explicit_loc; |
0fb4aa4b | 13545 | |
80e1d417 | 13546 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13547 | |
d9b3f62e | 13548 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13549 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13550 | |
13551 | warning (_("marker for static tracepoint %d (%s) not " | |
13552 | "found at previous line number"), | |
d9b3f62e | 13553 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13554 | |
51abb421 | 13555 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13556 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13557 | uiout->text ("Now in "); |
0fb4aa4b PA |
13558 | if (sym) |
13559 | { | |
112e8700 SM |
13560 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13561 | uiout->text (" at "); | |
0fb4aa4b | 13562 | } |
112e8700 | 13563 | uiout->field_string ("file", |
05cba821 | 13564 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13565 | uiout->text (":"); |
0fb4aa4b | 13566 | |
112e8700 | 13567 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13568 | { |
0b0865da | 13569 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13570 | |
112e8700 | 13571 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13572 | } |
13573 | ||
112e8700 SM |
13574 | uiout->field_int ("line", sal2.line); |
13575 | uiout->text ("\n"); | |
0fb4aa4b | 13576 | |
80e1d417 | 13577 | b->loc->line_number = sal2.line; |
2f202fde | 13578 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13579 | |
d28cd78a | 13580 | b->location.reset (NULL); |
67994074 KS |
13581 | initialize_explicit_location (&explicit_loc); |
13582 | explicit_loc.source_filename | |
00e52e53 | 13583 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13584 | explicit_loc.line_offset.offset = b->loc->line_number; |
13585 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13586 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13587 | |
13588 | /* Might be nice to check if function changed, and warn if | |
13589 | so. */ | |
13590 | ||
80e1d417 | 13591 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13592 | } |
13593 | } | |
13594 | return sal; | |
13595 | } | |
13596 | ||
8d3788bd VP |
13597 | /* Returns 1 iff locations A and B are sufficiently same that |
13598 | we don't need to report breakpoint as changed. */ | |
13599 | ||
13600 | static int | |
13601 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13602 | { | |
13603 | while (a && b) | |
13604 | { | |
13605 | if (a->address != b->address) | |
13606 | return 0; | |
13607 | ||
13608 | if (a->shlib_disabled != b->shlib_disabled) | |
13609 | return 0; | |
13610 | ||
13611 | if (a->enabled != b->enabled) | |
13612 | return 0; | |
13613 | ||
13614 | a = a->next; | |
13615 | b = b->next; | |
13616 | } | |
13617 | ||
13618 | if ((a == NULL) != (b == NULL)) | |
13619 | return 0; | |
13620 | ||
13621 | return 1; | |
13622 | } | |
13623 | ||
c2f4122d PA |
13624 | /* Split all locations of B that are bound to PSPACE out of B's |
13625 | location list to a separate list and return that list's head. If | |
13626 | PSPACE is NULL, hoist out all locations of B. */ | |
13627 | ||
13628 | static struct bp_location * | |
13629 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13630 | { | |
13631 | struct bp_location head; | |
13632 | struct bp_location *i = b->loc; | |
13633 | struct bp_location **i_link = &b->loc; | |
13634 | struct bp_location *hoisted = &head; | |
13635 | ||
13636 | if (pspace == NULL) | |
13637 | { | |
13638 | i = b->loc; | |
13639 | b->loc = NULL; | |
13640 | return i; | |
13641 | } | |
13642 | ||
13643 | head.next = NULL; | |
13644 | ||
13645 | while (i != NULL) | |
13646 | { | |
13647 | if (i->pspace == pspace) | |
13648 | { | |
13649 | *i_link = i->next; | |
13650 | i->next = NULL; | |
13651 | hoisted->next = i; | |
13652 | hoisted = i; | |
13653 | } | |
13654 | else | |
13655 | i_link = &i->next; | |
13656 | i = *i_link; | |
13657 | } | |
13658 | ||
13659 | return head.next; | |
13660 | } | |
13661 | ||
13662 | /* Create new breakpoint locations for B (a hardware or software | |
13663 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13664 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13665 | FILTER_PSPACE. Locations of other program spaces are left | |
13666 | untouched. */ | |
f1310107 | 13667 | |
0e30163f | 13668 | void |
0d381245 | 13669 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13670 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13671 | gdb::array_view<const symtab_and_line> sals, |
13672 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 VP |
13673 | { |
13674 | int i; | |
c2f4122d | 13675 | struct bp_location *existing_locations; |
0d381245 | 13676 | |
6c5b2ebe | 13677 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13678 | { |
13679 | /* Ranged breakpoints have only one start location and one end | |
13680 | location. */ | |
13681 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13682 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13683 | "multiple locations found\n"), | |
13684 | b->number); | |
13685 | return; | |
13686 | } | |
f1310107 | 13687 | |
4a64f543 MS |
13688 | /* If there's no new locations, and all existing locations are |
13689 | pending, don't do anything. This optimizes the common case where | |
13690 | all locations are in the same shared library, that was unloaded. | |
13691 | We'd like to retain the location, so that when the library is | |
13692 | loaded again, we don't loose the enabled/disabled status of the | |
13693 | individual locations. */ | |
6c5b2ebe | 13694 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13695 | return; |
13696 | ||
c2f4122d | 13697 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13698 | |
6c5b2ebe | 13699 | for (const auto &sal : sals) |
fe3f5fa8 | 13700 | { |
f8eba3c6 TT |
13701 | struct bp_location *new_loc; |
13702 | ||
6c5b2ebe | 13703 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13704 | |
6c5b2ebe | 13705 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13706 | |
0d381245 VP |
13707 | /* Reparse conditions, they might contain references to the |
13708 | old symtab. */ | |
13709 | if (b->cond_string != NULL) | |
13710 | { | |
bbc13ae3 | 13711 | const char *s; |
fe3f5fa8 | 13712 | |
0d381245 | 13713 | s = b->cond_string; |
492d29ea | 13714 | TRY |
0d381245 | 13715 | { |
6c5b2ebe PA |
13716 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13717 | block_for_pc (sal.pc), | |
0d381245 VP |
13718 | 0); |
13719 | } | |
492d29ea | 13720 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13721 | { |
3e43a32a MS |
13722 | warning (_("failed to reevaluate condition " |
13723 | "for breakpoint %d: %s"), | |
0d381245 VP |
13724 | b->number, e.message); |
13725 | new_loc->enabled = 0; | |
13726 | } | |
492d29ea | 13727 | END_CATCH |
0d381245 | 13728 | } |
fe3f5fa8 | 13729 | |
6c5b2ebe | 13730 | if (!sals_end.empty ()) |
f1310107 | 13731 | { |
6c5b2ebe | 13732 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13733 | |
6c5b2ebe | 13734 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13735 | } |
0d381245 | 13736 | } |
fe3f5fa8 | 13737 | |
4a64f543 MS |
13738 | /* If possible, carry over 'disable' status from existing |
13739 | breakpoints. */ | |
0d381245 VP |
13740 | { |
13741 | struct bp_location *e = existing_locations; | |
776592bf DE |
13742 | /* If there are multiple breakpoints with the same function name, |
13743 | e.g. for inline functions, comparing function names won't work. | |
13744 | Instead compare pc addresses; this is just a heuristic as things | |
13745 | may have moved, but in practice it gives the correct answer | |
13746 | often enough until a better solution is found. */ | |
13747 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13748 | ||
0d381245 VP |
13749 | for (; e; e = e->next) |
13750 | { | |
13751 | if (!e->enabled && e->function_name) | |
13752 | { | |
13753 | struct bp_location *l = b->loc; | |
776592bf DE |
13754 | if (have_ambiguous_names) |
13755 | { | |
13756 | for (; l; l = l->next) | |
f1310107 | 13757 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13758 | { |
13759 | l->enabled = 0; | |
13760 | break; | |
13761 | } | |
13762 | } | |
13763 | else | |
13764 | { | |
13765 | for (; l; l = l->next) | |
13766 | if (l->function_name | |
13767 | && strcmp (e->function_name, l->function_name) == 0) | |
13768 | { | |
13769 | l->enabled = 0; | |
13770 | break; | |
13771 | } | |
13772 | } | |
0d381245 VP |
13773 | } |
13774 | } | |
13775 | } | |
fe3f5fa8 | 13776 | |
8d3788bd VP |
13777 | if (!locations_are_equal (existing_locations, b->loc)) |
13778 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13779 | } |
13780 | ||
f00aae0f | 13781 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13782 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13783 | ||
6c5b2ebe | 13784 | static std::vector<symtab_and_line> |
f00aae0f | 13785 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13786 | struct program_space *search_pspace, int *found) |
ef23e705 | 13787 | { |
492d29ea | 13788 | struct gdb_exception exception = exception_none; |
ef23e705 | 13789 | |
983af33b | 13790 | gdb_assert (b->ops != NULL); |
ef23e705 | 13791 | |
6c5b2ebe PA |
13792 | std::vector<symtab_and_line> sals; |
13793 | ||
492d29ea | 13794 | TRY |
ef23e705 | 13795 | { |
6c5b2ebe | 13796 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13797 | } |
492d29ea | 13798 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13799 | { |
13800 | int not_found_and_ok = 0; | |
492d29ea PA |
13801 | |
13802 | exception = e; | |
13803 | ||
ef23e705 TJB |
13804 | /* For pending breakpoints, it's expected that parsing will |
13805 | fail until the right shared library is loaded. User has | |
13806 | already told to create pending breakpoints and don't need | |
13807 | extra messages. If breakpoint is in bp_shlib_disabled | |
13808 | state, then user already saw the message about that | |
13809 | breakpoint being disabled, and don't want to see more | |
13810 | errors. */ | |
58438ac1 | 13811 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13812 | && (b->condition_not_parsed |
13813 | || (b->loc != NULL | |
13814 | && search_pspace != NULL | |
13815 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13816 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13817 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13818 | || b->enable_state == bp_disabled)) |
13819 | not_found_and_ok = 1; | |
13820 | ||
13821 | if (!not_found_and_ok) | |
13822 | { | |
13823 | /* We surely don't want to warn about the same breakpoint | |
13824 | 10 times. One solution, implemented here, is disable | |
13825 | the breakpoint on error. Another solution would be to | |
13826 | have separate 'warning emitted' flag. Since this | |
13827 | happens only when a binary has changed, I don't know | |
13828 | which approach is better. */ | |
13829 | b->enable_state = bp_disabled; | |
13830 | throw_exception (e); | |
13831 | } | |
13832 | } | |
492d29ea | 13833 | END_CATCH |
ef23e705 | 13834 | |
492d29ea | 13835 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13836 | { |
6c5b2ebe PA |
13837 | for (auto &sal : sals) |
13838 | resolve_sal_pc (&sal); | |
f00aae0f | 13839 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13840 | { |
ed1d1739 KS |
13841 | char *cond_string, *extra_string; |
13842 | int thread, task; | |
ef23e705 | 13843 | |
6c5b2ebe | 13844 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13845 | &cond_string, &thread, &task, |
13846 | &extra_string); | |
f00aae0f | 13847 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13848 | if (cond_string) |
13849 | b->cond_string = cond_string; | |
13850 | b->thread = thread; | |
13851 | b->task = task; | |
e7e0cddf | 13852 | if (extra_string) |
f00aae0f KS |
13853 | { |
13854 | xfree (b->extra_string); | |
13855 | b->extra_string = extra_string; | |
13856 | } | |
ef23e705 TJB |
13857 | b->condition_not_parsed = 0; |
13858 | } | |
13859 | ||
983af33b | 13860 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13861 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13862 | |
58438ac1 TT |
13863 | *found = 1; |
13864 | } | |
13865 | else | |
13866 | *found = 0; | |
ef23e705 TJB |
13867 | |
13868 | return sals; | |
13869 | } | |
13870 | ||
348d480f PA |
13871 | /* The default re_set method, for typical hardware or software |
13872 | breakpoints. Reevaluate the breakpoint and recreate its | |
13873 | locations. */ | |
13874 | ||
13875 | static void | |
28010a5d | 13876 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13877 | { |
c2f4122d | 13878 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13879 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13880 | |
6c5b2ebe PA |
13881 | int found; |
13882 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13883 | filter_pspace, &found); | |
ef23e705 | 13884 | if (found) |
6c5b2ebe | 13885 | expanded = std::move (sals); |
ef23e705 | 13886 | |
f00aae0f | 13887 | if (b->location_range_end != NULL) |
f1310107 | 13888 | { |
6c5b2ebe PA |
13889 | std::vector<symtab_and_line> sals_end |
13890 | = location_to_sals (b, b->location_range_end.get (), | |
13891 | filter_pspace, &found); | |
f1310107 | 13892 | if (found) |
6c5b2ebe | 13893 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13894 | } |
13895 | ||
c2f4122d | 13896 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13897 | } |
13898 | ||
983af33b SDJ |
13899 | /* Default method for creating SALs from an address string. It basically |
13900 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13901 | ||
13902 | static void | |
f00aae0f KS |
13903 | create_sals_from_location_default (const struct event_location *location, |
13904 | struct linespec_result *canonical, | |
13905 | enum bptype type_wanted) | |
983af33b | 13906 | { |
f00aae0f | 13907 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13908 | } |
13909 | ||
13910 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13911 | function for the `create_breakpoints_sal' method of | |
13912 | breakpoint_ops. */ | |
13913 | ||
13914 | static void | |
13915 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13916 | struct linespec_result *canonical, | |
e1e01040 PA |
13917 | gdb::unique_xmalloc_ptr<char> cond_string, |
13918 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13919 | enum bptype type_wanted, |
13920 | enum bpdisp disposition, | |
13921 | int thread, | |
13922 | int task, int ignore_count, | |
13923 | const struct breakpoint_ops *ops, | |
13924 | int from_tty, int enabled, | |
44f238bb | 13925 | int internal, unsigned flags) |
983af33b | 13926 | { |
e1e01040 PA |
13927 | create_breakpoints_sal (gdbarch, canonical, |
13928 | std::move (cond_string), | |
13929 | std::move (extra_string), | |
983af33b SDJ |
13930 | type_wanted, disposition, |
13931 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13932 | enabled, internal, flags); |
983af33b SDJ |
13933 | } |
13934 | ||
13935 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13936 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13937 | |
6c5b2ebe | 13938 | static std::vector<symtab_and_line> |
f00aae0f KS |
13939 | decode_location_default (struct breakpoint *b, |
13940 | const struct event_location *location, | |
6c5b2ebe | 13941 | struct program_space *search_pspace) |
983af33b SDJ |
13942 | { |
13943 | struct linespec_result canonical; | |
13944 | ||
c2f4122d | 13945 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13946 | (struct symtab *) NULL, 0, |
13947 | &canonical, multiple_symbols_all, | |
13948 | b->filter); | |
13949 | ||
13950 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13951 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13952 | |
6c5b2ebe | 13953 | if (!canonical.lsals.empty ()) |
983af33b | 13954 | { |
6c5b2ebe PA |
13955 | const linespec_sals &lsal = canonical.lsals[0]; |
13956 | return std::move (lsal.sals); | |
983af33b | 13957 | } |
6c5b2ebe | 13958 | return {}; |
983af33b SDJ |
13959 | } |
13960 | ||
bf469271 | 13961 | /* Reset a breakpoint. */ |
c906108c | 13962 | |
bf469271 PA |
13963 | static void |
13964 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13965 | { |
fdf44873 TT |
13966 | input_radix = b->input_radix; |
13967 | set_language (b->language); | |
c906108c | 13968 | |
348d480f | 13969 | b->ops->re_set (b); |
c906108c SS |
13970 | } |
13971 | ||
c2f4122d PA |
13972 | /* Re-set breakpoint locations for the current program space. |
13973 | Locations bound to other program spaces are left untouched. */ | |
13974 | ||
c906108c | 13975 | void |
69de3c6a | 13976 | breakpoint_re_set (void) |
c906108c | 13977 | { |
35df4500 | 13978 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13979 | |
c5aa993b | 13980 | { |
fdf44873 TT |
13981 | scoped_restore_current_language save_language; |
13982 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13983 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13984 | |
5ed8105e PA |
13985 | /* Note: we must not try to insert locations until after all |
13986 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13987 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13988 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13989 | |
5ed8105e PA |
13990 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13991 | { | |
bf469271 PA |
13992 | TRY |
13993 | { | |
13994 | breakpoint_re_set_one (b); | |
13995 | } | |
13996 | CATCH (ex, RETURN_MASK_ALL) | |
13997 | { | |
13998 | exception_fprintf (gdb_stderr, ex, | |
13999 | "Error in re-setting breakpoint %d: ", | |
14000 | b->number); | |
14001 | } | |
14002 | END_CATCH | |
5ed8105e | 14003 | } |
5ed8105e PA |
14004 | |
14005 | jit_breakpoint_re_set (); | |
14006 | } | |
6c95b8df | 14007 | |
af02033e PP |
14008 | create_overlay_event_breakpoint (); |
14009 | create_longjmp_master_breakpoint (); | |
14010 | create_std_terminate_master_breakpoint (); | |
186c406b | 14011 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14012 | |
14013 | /* Now we can insert. */ | |
14014 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14015 | } |
14016 | \f | |
c906108c SS |
14017 | /* Reset the thread number of this breakpoint: |
14018 | ||
14019 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14020 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14021 | void |
fba45db2 | 14022 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14023 | { |
14024 | if (b->thread != -1) | |
14025 | { | |
39f77062 | 14026 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14027 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14028 | |
14029 | /* We're being called after following a fork. The new fork is | |
14030 | selected as current, and unless this was a vfork will have a | |
14031 | different program space from the original thread. Reset that | |
14032 | as well. */ | |
14033 | b->loc->pspace = current_program_space; | |
c906108c SS |
14034 | } |
14035 | } | |
14036 | ||
03ac34d5 MS |
14037 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14038 | If from_tty is nonzero, it prints a message to that effect, | |
14039 | which ends with a period (no newline). */ | |
14040 | ||
c906108c | 14041 | void |
fba45db2 | 14042 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14043 | { |
52f0bd74 | 14044 | struct breakpoint *b; |
c906108c SS |
14045 | |
14046 | if (count < 0) | |
14047 | count = 0; | |
14048 | ||
14049 | ALL_BREAKPOINTS (b) | |
14050 | if (b->number == bptnum) | |
c5aa993b | 14051 | { |
d77f58be SS |
14052 | if (is_tracepoint (b)) |
14053 | { | |
14054 | if (from_tty && count != 0) | |
14055 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14056 | bptnum); | |
14057 | return; | |
14058 | } | |
14059 | ||
c5aa993b | 14060 | b->ignore_count = count; |
221ea385 KS |
14061 | if (from_tty) |
14062 | { | |
14063 | if (count == 0) | |
3e43a32a MS |
14064 | printf_filtered (_("Will stop next time " |
14065 | "breakpoint %d is reached."), | |
221ea385 KS |
14066 | bptnum); |
14067 | else if (count == 1) | |
a3f17187 | 14068 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14069 | bptnum); |
14070 | else | |
3e43a32a MS |
14071 | printf_filtered (_("Will ignore next %d " |
14072 | "crossings of breakpoint %d."), | |
221ea385 KS |
14073 | count, bptnum); |
14074 | } | |
8d3788bd | 14075 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14076 | return; |
14077 | } | |
c906108c | 14078 | |
8a3fe4f8 | 14079 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14080 | } |
14081 | ||
c906108c SS |
14082 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14083 | ||
14084 | static void | |
0b39b52e | 14085 | ignore_command (const char *args, int from_tty) |
c906108c | 14086 | { |
0b39b52e | 14087 | const char *p = args; |
52f0bd74 | 14088 | int num; |
c906108c SS |
14089 | |
14090 | if (p == 0) | |
e2e0b3e5 | 14091 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14092 | |
c906108c | 14093 | num = get_number (&p); |
5c44784c | 14094 | if (num == 0) |
8a3fe4f8 | 14095 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14096 | if (*p == 0) |
8a3fe4f8 | 14097 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14098 | |
14099 | set_ignore_count (num, | |
14100 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14101 | from_tty); | |
221ea385 KS |
14102 | if (from_tty) |
14103 | printf_filtered ("\n"); | |
c906108c SS |
14104 | } |
14105 | \f | |
d0fe4701 XR |
14106 | |
14107 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14108 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14109 | |
14110 | static void | |
d0fe4701 XR |
14111 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14112 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14113 | { |
d0fe4701 XR |
14114 | if (bp_num_range.first == 0) |
14115 | { | |
14116 | warning (_("bad breakpoint number at or near '%d'"), | |
14117 | bp_num_range.first); | |
14118 | } | |
14119 | else | |
c906108c | 14120 | { |
d0fe4701 | 14121 | struct breakpoint *b, *tmp; |
197f0a60 | 14122 | |
d0fe4701 | 14123 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14124 | { |
d0fe4701 XR |
14125 | bool match = false; |
14126 | ||
5c44784c | 14127 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14128 | if (b->number == i) |
5c44784c | 14129 | { |
bfd28288 | 14130 | match = true; |
48649e1b | 14131 | function (b); |
11cf8741 | 14132 | break; |
5c44784c | 14133 | } |
bfd28288 | 14134 | if (!match) |
d0fe4701 | 14135 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14136 | } |
c906108c SS |
14137 | } |
14138 | } | |
14139 | ||
d0fe4701 XR |
14140 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14141 | ARGS. */ | |
14142 | ||
14143 | static void | |
14144 | map_breakpoint_numbers (const char *args, | |
14145 | gdb::function_view<void (breakpoint *)> function) | |
14146 | { | |
14147 | if (args == NULL || *args == '\0') | |
14148 | error_no_arg (_("one or more breakpoint numbers")); | |
14149 | ||
14150 | number_or_range_parser parser (args); | |
14151 | ||
14152 | while (!parser.finished ()) | |
14153 | { | |
14154 | int num = parser.get_number (); | |
14155 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14156 | } | |
14157 | } | |
14158 | ||
14159 | /* Return the breakpoint location structure corresponding to the | |
14160 | BP_NUM and LOC_NUM values. */ | |
14161 | ||
0d381245 | 14162 | static struct bp_location * |
d0fe4701 | 14163 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14164 | { |
0d381245 | 14165 | struct breakpoint *b; |
0d381245 VP |
14166 | |
14167 | ALL_BREAKPOINTS (b) | |
14168 | if (b->number == bp_num) | |
14169 | { | |
14170 | break; | |
14171 | } | |
14172 | ||
14173 | if (!b || b->number != bp_num) | |
d0fe4701 | 14174 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14175 | |
0d381245 | 14176 | if (loc_num == 0) |
d0fe4701 | 14177 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14178 | |
d0fe4701 XR |
14179 | int n = 0; |
14180 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14181 | if (++n == loc_num) | |
14182 | return loc; | |
14183 | ||
14184 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14185 | } |
14186 | ||
95e95a6d PA |
14187 | /* Modes of operation for extract_bp_num. */ |
14188 | enum class extract_bp_kind | |
14189 | { | |
14190 | /* Extracting a breakpoint number. */ | |
14191 | bp, | |
14192 | ||
14193 | /* Extracting a location number. */ | |
14194 | loc, | |
14195 | }; | |
14196 | ||
14197 | /* Extract a breakpoint or location number (as determined by KIND) | |
14198 | from the string starting at START. TRAILER is a character which | |
14199 | can be found after the number. If you don't want a trailer, use | |
14200 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14201 | string. This always returns a positive integer. */ | |
14202 | ||
14203 | static int | |
14204 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14205 | int trailer, const char **end_out = NULL) | |
14206 | { | |
14207 | const char *end = start; | |
14208 | int num = get_number_trailer (&end, trailer); | |
14209 | if (num < 0) | |
14210 | error (kind == extract_bp_kind::bp | |
14211 | ? _("Negative breakpoint number '%.*s'") | |
14212 | : _("Negative breakpoint location number '%.*s'"), | |
14213 | int (end - start), start); | |
14214 | if (num == 0) | |
14215 | error (kind == extract_bp_kind::bp | |
14216 | ? _("Bad breakpoint number '%.*s'") | |
14217 | : _("Bad breakpoint location number '%.*s'"), | |
14218 | int (end - start), start); | |
14219 | ||
14220 | if (end_out != NULL) | |
14221 | *end_out = end; | |
14222 | return num; | |
14223 | } | |
14224 | ||
14225 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14226 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14227 | representing the (inclusive) range. The returned pair's elements | |
14228 | are always positive integers. */ | |
14229 | ||
14230 | static std::pair<int, int> | |
14231 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14232 | const std::string &arg, | |
14233 | std::string::size_type arg_offset) | |
14234 | { | |
14235 | std::pair<int, int> range; | |
14236 | const char *bp_loc = &arg[arg_offset]; | |
14237 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14238 | if (dash != std::string::npos) | |
14239 | { | |
14240 | /* bp_loc is a range (x-z). */ | |
14241 | if (arg.length () == dash + 1) | |
14242 | error (kind == extract_bp_kind::bp | |
14243 | ? _("Bad breakpoint number at or near: '%s'") | |
14244 | : _("Bad breakpoint location number at or near: '%s'"), | |
14245 | bp_loc); | |
14246 | ||
14247 | const char *end; | |
14248 | const char *start_first = bp_loc; | |
14249 | const char *start_second = &arg[dash + 1]; | |
14250 | range.first = extract_bp_num (kind, start_first, '-'); | |
14251 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14252 | ||
14253 | if (range.first > range.second) | |
14254 | error (kind == extract_bp_kind::bp | |
14255 | ? _("Inverted breakpoint range at '%.*s'") | |
14256 | : _("Inverted breakpoint location range at '%.*s'"), | |
14257 | int (end - start_first), start_first); | |
14258 | } | |
14259 | else | |
14260 | { | |
14261 | /* bp_loc is a single value. */ | |
14262 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14263 | range.second = range.first; | |
14264 | } | |
14265 | return range; | |
14266 | } | |
14267 | ||
d0fe4701 XR |
14268 | /* Extract the breakpoint/location range specified by ARG. Returns |
14269 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14270 | BP_LOC_RANGE. | |
14271 | ||
14272 | ARG may be in any of the following forms: | |
14273 | ||
14274 | x where 'x' is a breakpoint number. | |
14275 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14276 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14277 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14278 | location number range. | |
14279 | */ | |
14280 | ||
cc638e86 | 14281 | static void |
d0fe4701 XR |
14282 | extract_bp_number_and_location (const std::string &arg, |
14283 | std::pair<int, int> &bp_num_range, | |
14284 | std::pair<int, int> &bp_loc_range) | |
14285 | { | |
14286 | std::string::size_type dot = arg.find ('.'); | |
14287 | ||
14288 | if (dot != std::string::npos) | |
14289 | { | |
14290 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14291 | ||
14292 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14293 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14294 | |
95e95a6d PA |
14295 | bp_num_range.first |
14296 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14297 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14298 | |
95e95a6d PA |
14299 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14300 | arg, dot + 1); | |
d0fe4701 XR |
14301 | } |
14302 | else | |
14303 | { | |
14304 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14305 | |
95e95a6d | 14306 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14307 | bp_loc_range.first = 0; |
14308 | bp_loc_range.second = 0; | |
14309 | } | |
d0fe4701 XR |
14310 | } |
14311 | ||
14312 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14313 | specifies whether to enable or disable. */ | |
14314 | ||
14315 | static void | |
14316 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14317 | { | |
14318 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14319 | if (loc != NULL) | |
14320 | { | |
14321 | if (loc->enabled != enable) | |
14322 | { | |
14323 | loc->enabled = enable; | |
14324 | mark_breakpoint_location_modified (loc); | |
14325 | } | |
14326 | if (target_supports_enable_disable_tracepoint () | |
14327 | && current_trace_status ()->running && loc->owner | |
14328 | && is_tracepoint (loc->owner)) | |
14329 | target_disable_tracepoint (loc); | |
14330 | } | |
14331 | update_global_location_list (UGLL_DONT_INSERT); | |
14332 | } | |
14333 | ||
14334 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14335 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14336 | (inclusive) range of location numbers of that breakpoint to | |
14337 | enable/disable. ENABLE specifies whether to enable or disable the | |
14338 | location. */ | |
14339 | ||
14340 | static void | |
14341 | enable_disable_breakpoint_location_range (int bp_num, | |
14342 | std::pair<int, int> &bp_loc_range, | |
14343 | bool enable) | |
14344 | { | |
14345 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14346 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14347 | } | |
0d381245 | 14348 | |
1900040c MS |
14349 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14350 | If from_tty is nonzero, it prints a message to that effect, | |
14351 | which ends with a period (no newline). */ | |
14352 | ||
c906108c | 14353 | void |
fba45db2 | 14354 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14355 | { |
14356 | /* Never disable a watchpoint scope breakpoint; we want to | |
14357 | hit them when we leave scope so we can delete both the | |
14358 | watchpoint and its scope breakpoint at that time. */ | |
14359 | if (bpt->type == bp_watchpoint_scope) | |
14360 | return; | |
14361 | ||
b5de0fa7 | 14362 | bpt->enable_state = bp_disabled; |
c906108c | 14363 | |
b775012e LM |
14364 | /* Mark breakpoint locations modified. */ |
14365 | mark_breakpoint_modified (bpt); | |
14366 | ||
d248b706 KY |
14367 | if (target_supports_enable_disable_tracepoint () |
14368 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14369 | { | |
14370 | struct bp_location *location; | |
14371 | ||
14372 | for (location = bpt->loc; location; location = location->next) | |
14373 | target_disable_tracepoint (location); | |
14374 | } | |
14375 | ||
44702360 | 14376 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14377 | |
8d3788bd | 14378 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14379 | } |
14380 | ||
d0fe4701 XR |
14381 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14382 | specified in ARGS. ARGS may be in any of the formats handled by | |
14383 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14384 | or disable the breakpoints/locations. */ | |
14385 | ||
c906108c | 14386 | static void |
d0fe4701 | 14387 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14388 | { |
c906108c | 14389 | if (args == 0) |
46c6471b PA |
14390 | { |
14391 | struct breakpoint *bpt; | |
14392 | ||
14393 | ALL_BREAKPOINTS (bpt) | |
14394 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14395 | { |
14396 | if (enable) | |
14397 | enable_breakpoint (bpt); | |
14398 | else | |
14399 | disable_breakpoint (bpt); | |
14400 | } | |
46c6471b | 14401 | } |
9eaabc75 | 14402 | else |
0d381245 | 14403 | { |
cb791d59 | 14404 | std::string num = extract_arg (&args); |
9eaabc75 | 14405 | |
cb791d59 | 14406 | while (!num.empty ()) |
d248b706 | 14407 | { |
d0fe4701 | 14408 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14409 | |
cc638e86 PA |
14410 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14411 | ||
14412 | if (bp_loc_range.first == bp_loc_range.second | |
14413 | && bp_loc_range.first == 0) | |
d0fe4701 | 14414 | { |
cc638e86 PA |
14415 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14416 | map_breakpoint_number_range (bp_num_range, | |
14417 | enable | |
14418 | ? enable_breakpoint | |
14419 | : disable_breakpoint); | |
14420 | } | |
14421 | else | |
14422 | { | |
14423 | /* Handle breakpoint ids with formats 'x.y' or | |
14424 | 'x.y-z'. */ | |
14425 | enable_disable_breakpoint_location_range | |
14426 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14427 | } |
9eaabc75 | 14428 | num = extract_arg (&args); |
d248b706 | 14429 | } |
0d381245 | 14430 | } |
c906108c SS |
14431 | } |
14432 | ||
d0fe4701 XR |
14433 | /* The disable command disables the specified breakpoints/locations |
14434 | (or all defined breakpoints) so they're no longer effective in | |
14435 | stopping the inferior. ARGS may be in any of the forms defined in | |
14436 | extract_bp_number_and_location. */ | |
14437 | ||
14438 | static void | |
14439 | disable_command (const char *args, int from_tty) | |
14440 | { | |
14441 | enable_disable_command (args, from_tty, false); | |
14442 | } | |
14443 | ||
c906108c | 14444 | static void |
816338b5 SS |
14445 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14446 | int count) | |
c906108c | 14447 | { |
afe38095 | 14448 | int target_resources_ok; |
c906108c SS |
14449 | |
14450 | if (bpt->type == bp_hardware_breakpoint) | |
14451 | { | |
14452 | int i; | |
c5aa993b | 14453 | i = hw_breakpoint_used_count (); |
53a5351d | 14454 | target_resources_ok = |
d92524f1 | 14455 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14456 | i + 1, 0); |
c906108c | 14457 | if (target_resources_ok == 0) |
8a3fe4f8 | 14458 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14459 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14460 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14461 | } |
14462 | ||
cc60f2e3 | 14463 | if (is_watchpoint (bpt)) |
c906108c | 14464 | { |
d07205c2 | 14465 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14466 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14467 | |
492d29ea | 14468 | TRY |
c906108c | 14469 | { |
3a5c3e22 PA |
14470 | struct watchpoint *w = (struct watchpoint *) bpt; |
14471 | ||
1e718ff1 TJB |
14472 | orig_enable_state = bpt->enable_state; |
14473 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14474 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14475 | } |
492d29ea | 14476 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14477 | { |
1e718ff1 | 14478 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14479 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14480 | bpt->number); | |
14481 | return; | |
c5aa993b | 14482 | } |
492d29ea | 14483 | END_CATCH |
c906108c | 14484 | } |
0101ce28 | 14485 | |
b775012e LM |
14486 | bpt->enable_state = bp_enabled; |
14487 | ||
14488 | /* Mark breakpoint locations modified. */ | |
14489 | mark_breakpoint_modified (bpt); | |
14490 | ||
d248b706 KY |
14491 | if (target_supports_enable_disable_tracepoint () |
14492 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14493 | { | |
14494 | struct bp_location *location; | |
14495 | ||
14496 | for (location = bpt->loc; location; location = location->next) | |
14497 | target_enable_tracepoint (location); | |
14498 | } | |
14499 | ||
b4c291bb | 14500 | bpt->disposition = disposition; |
816338b5 | 14501 | bpt->enable_count = count; |
44702360 | 14502 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14503 | |
8d3788bd | 14504 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14505 | } |
14506 | ||
fe3f5fa8 | 14507 | |
c906108c | 14508 | void |
fba45db2 | 14509 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14510 | { |
816338b5 | 14511 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14512 | } |
14513 | ||
d0fe4701 XR |
14514 | /* The enable command enables the specified breakpoints/locations (or |
14515 | all defined breakpoints) so they once again become (or continue to | |
14516 | be) effective in stopping the inferior. ARGS may be in any of the | |
14517 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14518 | |
c906108c | 14519 | static void |
981a3fb3 | 14520 | enable_command (const char *args, int from_tty) |
c906108c | 14521 | { |
d0fe4701 | 14522 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14523 | } |
14524 | ||
c906108c | 14525 | static void |
4495129a | 14526 | enable_once_command (const char *args, int from_tty) |
c906108c | 14527 | { |
48649e1b TT |
14528 | map_breakpoint_numbers |
14529 | (args, [&] (breakpoint *b) | |
14530 | { | |
14531 | iterate_over_related_breakpoints | |
14532 | (b, [&] (breakpoint *bpt) | |
14533 | { | |
14534 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14535 | }); | |
14536 | }); | |
816338b5 SS |
14537 | } |
14538 | ||
14539 | static void | |
4495129a | 14540 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14541 | { |
b9d61307 SM |
14542 | int count; |
14543 | ||
14544 | if (args == NULL) | |
14545 | error_no_arg (_("hit count")); | |
14546 | ||
14547 | count = get_number (&args); | |
816338b5 | 14548 | |
48649e1b TT |
14549 | map_breakpoint_numbers |
14550 | (args, [&] (breakpoint *b) | |
14551 | { | |
14552 | iterate_over_related_breakpoints | |
14553 | (b, [&] (breakpoint *bpt) | |
14554 | { | |
14555 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14556 | }); | |
14557 | }); | |
c906108c SS |
14558 | } |
14559 | ||
c906108c | 14560 | static void |
4495129a | 14561 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14562 | { |
48649e1b TT |
14563 | map_breakpoint_numbers |
14564 | (args, [&] (breakpoint *b) | |
14565 | { | |
14566 | iterate_over_related_breakpoints | |
14567 | (b, [&] (breakpoint *bpt) | |
14568 | { | |
14569 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14570 | }); | |
14571 | }); | |
c906108c SS |
14572 | } |
14573 | \f | |
fa8d40ab | 14574 | static void |
981a3fb3 | 14575 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14576 | { |
14577 | } | |
14578 | ||
14579 | static void | |
981a3fb3 | 14580 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14581 | { |
14582 | } | |
14583 | ||
1f3b5d1b PP |
14584 | /* Invalidate last known value of any hardware watchpoint if |
14585 | the memory which that value represents has been written to by | |
14586 | GDB itself. */ | |
14587 | ||
14588 | static void | |
8de0566d YQ |
14589 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14590 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14591 | const bfd_byte *data) |
14592 | { | |
14593 | struct breakpoint *bp; | |
14594 | ||
14595 | ALL_BREAKPOINTS (bp) | |
14596 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14597 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14598 | { |
3a5c3e22 | 14599 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14600 | |
3a5c3e22 PA |
14601 | if (wp->val_valid && wp->val) |
14602 | { | |
14603 | struct bp_location *loc; | |
14604 | ||
14605 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14606 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14607 | && loc->address + loc->length > addr | |
14608 | && addr + len > loc->address) | |
14609 | { | |
14610 | value_free (wp->val); | |
14611 | wp->val = NULL; | |
14612 | wp->val_valid = 0; | |
14613 | } | |
14614 | } | |
1f3b5d1b PP |
14615 | } |
14616 | } | |
14617 | ||
8181d85f DJ |
14618 | /* Create and insert a breakpoint for software single step. */ |
14619 | ||
14620 | void | |
6c95b8df | 14621 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14622 | const address_space *aspace, |
4a64f543 | 14623 | CORE_ADDR next_pc) |
8181d85f | 14624 | { |
7c16b83e PA |
14625 | struct thread_info *tp = inferior_thread (); |
14626 | struct symtab_and_line sal; | |
14627 | CORE_ADDR pc = next_pc; | |
8181d85f | 14628 | |
34b7e8a6 PA |
14629 | if (tp->control.single_step_breakpoints == NULL) |
14630 | { | |
14631 | tp->control.single_step_breakpoints | |
5d5658a1 | 14632 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14633 | } |
8181d85f | 14634 | |
7c16b83e PA |
14635 | sal = find_pc_line (pc, 0); |
14636 | sal.pc = pc; | |
14637 | sal.section = find_pc_overlay (pc); | |
14638 | sal.explicit_pc = 1; | |
34b7e8a6 | 14639 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14640 | |
7c16b83e | 14641 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14642 | } |
14643 | ||
93f9a11f YQ |
14644 | /* Insert single step breakpoints according to the current state. */ |
14645 | ||
14646 | int | |
14647 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14648 | { | |
f5ea389a | 14649 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14650 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14651 | |
f5ea389a | 14652 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14653 | |
a0ff9e1a | 14654 | if (!next_pcs.empty ()) |
93f9a11f | 14655 | { |
f5ea389a | 14656 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14657 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14658 | |
a0ff9e1a | 14659 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14660 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14661 | ||
93f9a11f YQ |
14662 | return 1; |
14663 | } | |
14664 | else | |
14665 | return 0; | |
14666 | } | |
14667 | ||
34b7e8a6 | 14668 | /* See breakpoint.h. */ |
f02253f1 HZ |
14669 | |
14670 | int | |
7c16b83e | 14671 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14672 | const address_space *aspace, |
7c16b83e | 14673 | CORE_ADDR pc) |
1aafd4da | 14674 | { |
7c16b83e | 14675 | struct bp_location *loc; |
1aafd4da | 14676 | |
7c16b83e PA |
14677 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14678 | if (loc->inserted | |
14679 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14680 | return 1; | |
1aafd4da | 14681 | |
7c16b83e | 14682 | return 0; |
ef370185 JB |
14683 | } |
14684 | ||
14685 | /* Check whether a software single-step breakpoint is inserted at | |
14686 | PC. */ | |
14687 | ||
14688 | int | |
accd0bcd | 14689 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14690 | CORE_ADDR pc) |
14691 | { | |
34b7e8a6 PA |
14692 | struct breakpoint *bpt; |
14693 | ||
14694 | ALL_BREAKPOINTS (bpt) | |
14695 | { | |
14696 | if (bpt->type == bp_single_step | |
14697 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14698 | return 1; | |
14699 | } | |
14700 | return 0; | |
1aafd4da UW |
14701 | } |
14702 | ||
1042e4c0 SS |
14703 | /* Tracepoint-specific operations. */ |
14704 | ||
14705 | /* Set tracepoint count to NUM. */ | |
14706 | static void | |
14707 | set_tracepoint_count (int num) | |
14708 | { | |
14709 | tracepoint_count = num; | |
4fa62494 | 14710 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14711 | } |
14712 | ||
70221824 | 14713 | static void |
0b39b52e | 14714 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14715 | { |
55aa24fb | 14716 | struct breakpoint_ops *ops; |
55aa24fb | 14717 | |
ffc2605c TT |
14718 | event_location_up location = string_to_event_location (&arg, |
14719 | current_language); | |
5b56227b | 14720 | if (location != NULL |
ffc2605c | 14721 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14722 | ops = &tracepoint_probe_breakpoint_ops; |
14723 | else | |
14724 | ops = &tracepoint_breakpoint_ops; | |
14725 | ||
558a9d82 | 14726 | create_breakpoint (get_current_arch (), |
ffc2605c | 14727 | location.get (), |
f00aae0f | 14728 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14729 | 0 /* tempflag */, |
14730 | bp_tracepoint /* type_wanted */, | |
14731 | 0 /* Ignore count */, | |
14732 | pending_break_support, | |
14733 | ops, | |
14734 | from_tty, | |
14735 | 1 /* enabled */, | |
14736 | 0 /* internal */, 0); | |
1042e4c0 SS |
14737 | } |
14738 | ||
70221824 | 14739 | static void |
0b39b52e | 14740 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14741 | { |
ffc2605c TT |
14742 | event_location_up location = string_to_event_location (&arg, |
14743 | current_language); | |
558a9d82 | 14744 | create_breakpoint (get_current_arch (), |
ffc2605c | 14745 | location.get (), |
f00aae0f | 14746 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14747 | 0 /* tempflag */, |
14748 | bp_fast_tracepoint /* type_wanted */, | |
14749 | 0 /* Ignore count */, | |
14750 | pending_break_support, | |
14751 | &tracepoint_breakpoint_ops, | |
14752 | from_tty, | |
14753 | 1 /* enabled */, | |
14754 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14755 | } |
14756 | ||
14757 | /* strace command implementation. Creates a static tracepoint. */ | |
14758 | ||
70221824 | 14759 | static void |
0b39b52e | 14760 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14761 | { |
983af33b | 14762 | struct breakpoint_ops *ops; |
ffc2605c | 14763 | event_location_up location; |
983af33b SDJ |
14764 | |
14765 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14766 | or with a normal static tracepoint. */ | |
61012eef | 14767 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14768 | { |
14769 | ops = &strace_marker_breakpoint_ops; | |
14770 | location = new_linespec_location (&arg); | |
14771 | } | |
983af33b | 14772 | else |
f00aae0f KS |
14773 | { |
14774 | ops = &tracepoint_breakpoint_ops; | |
14775 | location = string_to_event_location (&arg, current_language); | |
14776 | } | |
983af33b | 14777 | |
558a9d82 | 14778 | create_breakpoint (get_current_arch (), |
ffc2605c | 14779 | location.get (), |
f00aae0f | 14780 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14781 | 0 /* tempflag */, |
14782 | bp_static_tracepoint /* type_wanted */, | |
14783 | 0 /* Ignore count */, | |
14784 | pending_break_support, | |
14785 | ops, | |
14786 | from_tty, | |
14787 | 1 /* enabled */, | |
14788 | 0 /* internal */, 0); | |
7a697b8d SS |
14789 | } |
14790 | ||
409873ef SS |
14791 | /* Set up a fake reader function that gets command lines from a linked |
14792 | list that was acquired during tracepoint uploading. */ | |
14793 | ||
14794 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14795 | static int next_cmd; |
409873ef SS |
14796 | |
14797 | static char * | |
14798 | read_uploaded_action (void) | |
14799 | { | |
14800 | char *rslt; | |
14801 | ||
3149d8c1 | 14802 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14803 | |
3149d8c1 | 14804 | next_cmd++; |
409873ef SS |
14805 | |
14806 | return rslt; | |
14807 | } | |
14808 | ||
00bf0b85 SS |
14809 | /* Given information about a tracepoint as recorded on a target (which |
14810 | can be either a live system or a trace file), attempt to create an | |
14811 | equivalent GDB tracepoint. This is not a reliable process, since | |
14812 | the target does not necessarily have all the information used when | |
14813 | the tracepoint was originally defined. */ | |
14814 | ||
d9b3f62e | 14815 | struct tracepoint * |
00bf0b85 | 14816 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14817 | { |
f2fc3015 TT |
14818 | const char *addr_str; |
14819 | char small_buf[100]; | |
d9b3f62e | 14820 | struct tracepoint *tp; |
fd9b8c24 | 14821 | |
409873ef SS |
14822 | if (utp->at_string) |
14823 | addr_str = utp->at_string; | |
14824 | else | |
14825 | { | |
14826 | /* In the absence of a source location, fall back to raw | |
14827 | address. Since there is no way to confirm that the address | |
14828 | means the same thing as when the trace was started, warn the | |
14829 | user. */ | |
3e43a32a MS |
14830 | warning (_("Uploaded tracepoint %d has no " |
14831 | "source location, using raw address"), | |
409873ef | 14832 | utp->number); |
8c042590 | 14833 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14834 | addr_str = small_buf; |
14835 | } | |
14836 | ||
14837 | /* There's not much we can do with a sequence of bytecodes. */ | |
14838 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14839 | warning (_("Uploaded tracepoint %d condition " |
14840 | "has no source form, ignoring it"), | |
409873ef | 14841 | utp->number); |
d5551862 | 14842 | |
ffc2605c TT |
14843 | event_location_up location = string_to_event_location (&addr_str, |
14844 | current_language); | |
8cdf0e15 | 14845 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14846 | location.get (), |
f00aae0f | 14847 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14848 | 0 /* parse cond/thread */, |
8cdf0e15 | 14849 | 0 /* tempflag */, |
0fb4aa4b | 14850 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14851 | 0 /* Ignore count */, |
14852 | pending_break_support, | |
348d480f | 14853 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14854 | 0 /* from_tty */, |
84f4c1fe | 14855 | utp->enabled /* enabled */, |
44f238bb PA |
14856 | 0 /* internal */, |
14857 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14858 | return NULL; |
fd9b8c24 | 14859 | |
409873ef | 14860 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14861 | tp = get_tracepoint (tracepoint_count); |
14862 | gdb_assert (tp != NULL); | |
d5551862 | 14863 | |
00bf0b85 SS |
14864 | if (utp->pass > 0) |
14865 | { | |
8c042590 | 14866 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14867 | tp->number); |
00bf0b85 | 14868 | |
409873ef | 14869 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14870 | } |
14871 | ||
409873ef SS |
14872 | /* If we have uploaded versions of the original commands, set up a |
14873 | special-purpose "reader" function and call the usual command line | |
14874 | reader, then pass the result to the breakpoint command-setting | |
14875 | function. */ | |
3149d8c1 | 14876 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14877 | { |
93921405 | 14878 | command_line_up cmd_list; |
00bf0b85 | 14879 | |
409873ef | 14880 | this_utp = utp; |
3149d8c1 | 14881 | next_cmd = 0; |
d5551862 | 14882 | |
409873ef SS |
14883 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14884 | ||
c1fc2657 | 14885 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14886 | } |
3149d8c1 SS |
14887 | else if (!VEC_empty (char_ptr, utp->actions) |
14888 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14889 | warning (_("Uploaded tracepoint %d actions " |
14890 | "have no source form, ignoring them"), | |
409873ef | 14891 | utp->number); |
00bf0b85 | 14892 | |
f196051f | 14893 | /* Copy any status information that might be available. */ |
c1fc2657 | 14894 | tp->hit_count = utp->hit_count; |
f196051f SS |
14895 | tp->traceframe_usage = utp->traceframe_usage; |
14896 | ||
00bf0b85 | 14897 | return tp; |
d9b3f62e | 14898 | } |
00bf0b85 | 14899 | |
1042e4c0 SS |
14900 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14901 | omitted. */ | |
14902 | ||
14903 | static void | |
1d12d88f | 14904 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14905 | { |
79a45e25 | 14906 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14907 | int num_printed; |
1042e4c0 | 14908 | |
e5a67952 | 14909 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14910 | |
14911 | if (num_printed == 0) | |
1042e4c0 | 14912 | { |
e5a67952 | 14913 | if (args == NULL || *args == '\0') |
112e8700 | 14914 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14915 | else |
112e8700 | 14916 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14917 | } |
ad443146 SS |
14918 | |
14919 | default_collect_info (); | |
1042e4c0 SS |
14920 | } |
14921 | ||
4a64f543 | 14922 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14923 | Not supported by all targets. */ |
14924 | static void | |
5fed81ff | 14925 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14926 | { |
14927 | enable_command (args, from_tty); | |
14928 | } | |
14929 | ||
4a64f543 | 14930 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14931 | Not supported by all targets. */ |
14932 | static void | |
5fed81ff | 14933 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14934 | { |
14935 | disable_command (args, from_tty); | |
14936 | } | |
14937 | ||
4a64f543 | 14938 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14939 | static void |
4495129a | 14940 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14941 | { |
35df4500 | 14942 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14943 | |
14944 | dont_repeat (); | |
14945 | ||
14946 | if (arg == 0) | |
14947 | { | |
14948 | int breaks_to_delete = 0; | |
14949 | ||
14950 | /* Delete all breakpoints if no argument. | |
14951 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14952 | have to be deleted with an explicit breakpoint number |
14953 | argument. */ | |
1042e4c0 | 14954 | ALL_TRACEPOINTS (b) |
46c6471b | 14955 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14956 | { |
14957 | breaks_to_delete = 1; | |
14958 | break; | |
14959 | } | |
1042e4c0 SS |
14960 | |
14961 | /* Ask user only if there are some breakpoints to delete. */ | |
14962 | if (!from_tty | |
14963 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14964 | { | |
35df4500 | 14965 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14966 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14967 | delete_breakpoint (b); |
1042e4c0 SS |
14968 | } |
14969 | } | |
14970 | else | |
48649e1b TT |
14971 | map_breakpoint_numbers |
14972 | (arg, [&] (breakpoint *b) | |
14973 | { | |
14974 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14975 | }); | |
1042e4c0 SS |
14976 | } |
14977 | ||
197f0a60 TT |
14978 | /* Helper function for trace_pass_command. */ |
14979 | ||
14980 | static void | |
d9b3f62e | 14981 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14982 | { |
d9b3f62e | 14983 | tp->pass_count = count; |
c1fc2657 | 14984 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
14985 | if (from_tty) |
14986 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14987 | tp->number, count); |
197f0a60 TT |
14988 | } |
14989 | ||
1042e4c0 SS |
14990 | /* Set passcount for tracepoint. |
14991 | ||
14992 | First command argument is passcount, second is tracepoint number. | |
14993 | If tracepoint number omitted, apply to most recently defined. | |
14994 | Also accepts special argument "all". */ | |
14995 | ||
14996 | static void | |
0b39b52e | 14997 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14998 | { |
d9b3f62e | 14999 | struct tracepoint *t1; |
0b39b52e | 15000 | ULONGEST count; |
1042e4c0 SS |
15001 | |
15002 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15003 | error (_("passcount command requires an " |
15004 | "argument (count + optional TP num)")); | |
1042e4c0 | 15005 | |
0b39b52e | 15006 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15007 | |
529480d0 | 15008 | args = skip_spaces (args); |
1042e4c0 SS |
15009 | if (*args && strncasecmp (args, "all", 3) == 0) |
15010 | { | |
d9b3f62e PA |
15011 | struct breakpoint *b; |
15012 | ||
1042e4c0 | 15013 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15014 | if (*args) |
15015 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15016 | |
d9b3f62e | 15017 | ALL_TRACEPOINTS (b) |
197f0a60 | 15018 | { |
d9b3f62e | 15019 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15020 | trace_pass_set_count (t1, count, from_tty); |
15021 | } | |
15022 | } | |
15023 | else if (*args == '\0') | |
1042e4c0 | 15024 | { |
5fa1d40e | 15025 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15026 | if (t1) |
197f0a60 TT |
15027 | trace_pass_set_count (t1, count, from_tty); |
15028 | } | |
15029 | else | |
15030 | { | |
bfd28288 PA |
15031 | number_or_range_parser parser (args); |
15032 | while (!parser.finished ()) | |
1042e4c0 | 15033 | { |
bfd28288 | 15034 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15035 | if (t1) |
15036 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15037 | } |
15038 | } | |
1042e4c0 SS |
15039 | } |
15040 | ||
d9b3f62e | 15041 | struct tracepoint * |
1042e4c0 SS |
15042 | get_tracepoint (int num) |
15043 | { | |
15044 | struct breakpoint *t; | |
15045 | ||
15046 | ALL_TRACEPOINTS (t) | |
15047 | if (t->number == num) | |
d9b3f62e | 15048 | return (struct tracepoint *) t; |
1042e4c0 SS |
15049 | |
15050 | return NULL; | |
15051 | } | |
15052 | ||
d5551862 SS |
15053 | /* Find the tracepoint with the given target-side number (which may be |
15054 | different from the tracepoint number after disconnecting and | |
15055 | reconnecting). */ | |
15056 | ||
d9b3f62e | 15057 | struct tracepoint * |
d5551862 SS |
15058 | get_tracepoint_by_number_on_target (int num) |
15059 | { | |
d9b3f62e | 15060 | struct breakpoint *b; |
d5551862 | 15061 | |
d9b3f62e PA |
15062 | ALL_TRACEPOINTS (b) |
15063 | { | |
15064 | struct tracepoint *t = (struct tracepoint *) b; | |
15065 | ||
15066 | if (t->number_on_target == num) | |
15067 | return t; | |
15068 | } | |
d5551862 SS |
15069 | |
15070 | return NULL; | |
15071 | } | |
15072 | ||
1042e4c0 | 15073 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15074 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15075 | If the argument is missing, the most recent tracepoint |
15076 | (tracepoint_count) is returned. */ | |
15077 | ||
d9b3f62e | 15078 | struct tracepoint * |
0b39b52e | 15079 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15080 | number_or_range_parser *parser) |
1042e4c0 | 15081 | { |
1042e4c0 SS |
15082 | struct breakpoint *t; |
15083 | int tpnum; | |
0b39b52e | 15084 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15085 | |
bfd28288 | 15086 | if (parser != NULL) |
197f0a60 | 15087 | { |
bfd28288 PA |
15088 | gdb_assert (!parser->finished ()); |
15089 | tpnum = parser->get_number (); | |
197f0a60 TT |
15090 | } |
15091 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15092 | tpnum = tracepoint_count; |
1042e4c0 | 15093 | else |
197f0a60 | 15094 | tpnum = get_number (arg); |
1042e4c0 SS |
15095 | |
15096 | if (tpnum <= 0) | |
15097 | { | |
15098 | if (instring && *instring) | |
15099 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15100 | instring); | |
15101 | else | |
5fa1d40e | 15102 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15103 | return NULL; |
15104 | } | |
15105 | ||
15106 | ALL_TRACEPOINTS (t) | |
15107 | if (t->number == tpnum) | |
15108 | { | |
d9b3f62e | 15109 | return (struct tracepoint *) t; |
1042e4c0 SS |
15110 | } |
15111 | ||
1042e4c0 SS |
15112 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15113 | return NULL; | |
15114 | } | |
15115 | ||
d9b3f62e PA |
15116 | void |
15117 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15118 | { | |
15119 | if (b->thread != -1) | |
15120 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15121 | ||
15122 | if (b->task != 0) | |
15123 | fprintf_unfiltered (fp, " task %d", b->task); | |
15124 | ||
15125 | fprintf_unfiltered (fp, "\n"); | |
15126 | } | |
15127 | ||
6149aea9 PA |
15128 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15129 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15130 | on each breakpoint and only include the ones for which it returns | |
15131 | non-zero. */ | |
15132 | ||
1042e4c0 | 15133 | static void |
4495129a | 15134 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15135 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15136 | { |
15137 | struct breakpoint *tp; | |
6149aea9 | 15138 | int any = 0; |
6149aea9 | 15139 | int extra_trace_bits = 0; |
1042e4c0 | 15140 | |
6149aea9 PA |
15141 | if (filename == 0 || *filename == 0) |
15142 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15143 | |
15144 | /* See if we have anything to save. */ | |
6149aea9 | 15145 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15146 | { |
6149aea9 | 15147 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15148 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15149 | continue; |
15150 | ||
15151 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15152 | if (filter && !filter (tp)) | |
15153 | continue; | |
15154 | ||
15155 | any = 1; | |
15156 | ||
15157 | if (is_tracepoint (tp)) | |
15158 | { | |
15159 | extra_trace_bits = 1; | |
15160 | ||
15161 | /* We can stop searching. */ | |
15162 | break; | |
15163 | } | |
1042e4c0 | 15164 | } |
6149aea9 PA |
15165 | |
15166 | if (!any) | |
1042e4c0 | 15167 | { |
6149aea9 | 15168 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15169 | return; |
15170 | } | |
15171 | ||
ee0c3293 | 15172 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15173 | |
15174 | stdio_file fp; | |
15175 | ||
ee0c3293 | 15176 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15177 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15178 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15179 | |
6149aea9 | 15180 | if (extra_trace_bits) |
d7e74731 | 15181 | save_trace_state_variables (&fp); |
8bf6485c | 15182 | |
6149aea9 | 15183 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15184 | { |
6149aea9 | 15185 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15186 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15187 | continue; |
8bf6485c | 15188 | |
6149aea9 PA |
15189 | /* If we have a filter, only save the breakpoints it accepts. */ |
15190 | if (filter && !filter (tp)) | |
15191 | continue; | |
15192 | ||
d7e74731 | 15193 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15194 | |
6149aea9 PA |
15195 | /* Note, we can't rely on tp->number for anything, as we can't |
15196 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15197 | instead. */ | |
15198 | ||
15199 | if (tp->cond_string) | |
d7e74731 | 15200 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15201 | |
15202 | if (tp->ignore_count) | |
d7e74731 | 15203 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15204 | |
2d9442cc | 15205 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15206 | { |
d7e74731 | 15207 | fp.puts (" commands\n"); |
a7bdde9e | 15208 | |
d7e74731 | 15209 | current_uiout->redirect (&fp); |
492d29ea | 15210 | TRY |
1042e4c0 | 15211 | { |
d1b0a7bf | 15212 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15213 | } |
492d29ea PA |
15214 | CATCH (ex, RETURN_MASK_ALL) |
15215 | { | |
112e8700 | 15216 | current_uiout->redirect (NULL); |
492d29ea PA |
15217 | throw_exception (ex); |
15218 | } | |
15219 | END_CATCH | |
1042e4c0 | 15220 | |
112e8700 | 15221 | current_uiout->redirect (NULL); |
d7e74731 | 15222 | fp.puts (" end\n"); |
1042e4c0 | 15223 | } |
6149aea9 PA |
15224 | |
15225 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15226 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15227 | |
15228 | /* If this is a multi-location breakpoint, check if the locations | |
15229 | should be individually disabled. Watchpoint locations are | |
15230 | special, and not user visible. */ | |
15231 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15232 | { | |
15233 | struct bp_location *loc; | |
15234 | int n = 1; | |
15235 | ||
15236 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15237 | if (!loc->enabled) | |
d7e74731 | 15238 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15239 | } |
1042e4c0 | 15240 | } |
8bf6485c | 15241 | |
6149aea9 | 15242 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15243 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15244 | |
1042e4c0 | 15245 | if (from_tty) |
ee0c3293 | 15246 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15247 | } |
15248 | ||
15249 | /* The `save breakpoints' command. */ | |
15250 | ||
15251 | static void | |
4495129a | 15252 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15253 | { |
15254 | save_breakpoints (args, from_tty, NULL); | |
15255 | } | |
15256 | ||
15257 | /* The `save tracepoints' command. */ | |
15258 | ||
15259 | static void | |
4495129a | 15260 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15261 | { |
15262 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15263 | } |
15264 | ||
15265 | /* Create a vector of all tracepoints. */ | |
15266 | ||
15267 | VEC(breakpoint_p) * | |
eeae04df | 15268 | all_tracepoints (void) |
1042e4c0 SS |
15269 | { |
15270 | VEC(breakpoint_p) *tp_vec = 0; | |
15271 | struct breakpoint *tp; | |
15272 | ||
15273 | ALL_TRACEPOINTS (tp) | |
15274 | { | |
15275 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15276 | } | |
15277 | ||
15278 | return tp_vec; | |
15279 | } | |
15280 | ||
c906108c | 15281 | \f |
629500fa KS |
15282 | /* This help string is used to consolidate all the help string for specifying |
15283 | locations used by several commands. */ | |
15284 | ||
15285 | #define LOCATION_HELP_STRING \ | |
15286 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15287 | source filename, function name, label name, and line number.\n\ | |
15288 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15289 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15290 | \"factorial.c:fact:the_top\".\n\ | |
15291 | \n\ | |
15292 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15293 | program. Example: To specify the fourth byte past the start function\n\ | |
15294 | \"main\", use \"*main + 4\".\n\ | |
15295 | \n\ | |
15296 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15297 | syntax to specify location parameters.\n\ | |
15298 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15299 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15300 | -function fact -label the_top\".\n" | |
15301 | ||
4a64f543 MS |
15302 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15303 | commands. It is defined as a macro to prevent duplication. | |
15304 | COMMAND should be a string constant containing the name of the | |
15305 | command. */ | |
629500fa | 15306 | |
31e2b00f | 15307 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15308 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15309 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15310 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15311 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15312 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15313 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15314 | below.\n\ | |
15315 | \n\ | |
dc10affe PA |
15316 | With no LOCATION, uses current execution address of the selected\n\ |
15317 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15318 | \n\ |
15319 | THREADNUM is the number from \"info threads\".\n\ | |
15320 | CONDITION is a boolean expression.\n\ | |
629500fa | 15321 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15322 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15323 | conditions are different.\n\ | |
31e2b00f AS |
15324 | \n\ |
15325 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15326 | ||
44feb3ce TT |
15327 | /* List of subcommands for "catch". */ |
15328 | static struct cmd_list_element *catch_cmdlist; | |
15329 | ||
15330 | /* List of subcommands for "tcatch". */ | |
15331 | static struct cmd_list_element *tcatch_cmdlist; | |
15332 | ||
9ac4176b | 15333 | void |
a121b7c1 | 15334 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15335 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15336 | completer_ftype *completer, |
44feb3ce TT |
15337 | void *user_data_catch, |
15338 | void *user_data_tcatch) | |
15339 | { | |
15340 | struct cmd_list_element *command; | |
15341 | ||
0450cc4c | 15342 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15343 | &catch_cmdlist); |
15344 | set_cmd_sfunc (command, sfunc); | |
15345 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15346 | set_cmd_completer (command, completer); |
44feb3ce | 15347 | |
0450cc4c | 15348 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15349 | &tcatch_cmdlist); |
15350 | set_cmd_sfunc (command, sfunc); | |
15351 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15352 | set_cmd_completer (command, completer); |
44feb3ce TT |
15353 | } |
15354 | ||
6149aea9 | 15355 | static void |
981a3fb3 | 15356 | save_command (const char *arg, int from_tty) |
6149aea9 | 15357 | { |
3e43a32a MS |
15358 | printf_unfiltered (_("\"save\" must be followed by " |
15359 | "the name of a save subcommand.\n")); | |
635c7e8a | 15360 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15361 | } |
15362 | ||
84f4c1fe PM |
15363 | struct breakpoint * |
15364 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15365 | void *data) | |
15366 | { | |
35df4500 | 15367 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15368 | |
35df4500 | 15369 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15370 | { |
15371 | if ((*callback) (b, data)) | |
15372 | return b; | |
15373 | } | |
15374 | ||
15375 | return NULL; | |
15376 | } | |
15377 | ||
0574c78f GB |
15378 | /* Zero if any of the breakpoint's locations could be a location where |
15379 | functions have been inlined, nonzero otherwise. */ | |
15380 | ||
15381 | static int | |
15382 | is_non_inline_function (struct breakpoint *b) | |
15383 | { | |
15384 | /* The shared library event breakpoint is set on the address of a | |
15385 | non-inline function. */ | |
15386 | if (b->type == bp_shlib_event) | |
15387 | return 1; | |
15388 | ||
15389 | return 0; | |
15390 | } | |
15391 | ||
15392 | /* Nonzero if the specified PC cannot be a location where functions | |
15393 | have been inlined. */ | |
15394 | ||
15395 | int | |
accd0bcd | 15396 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15397 | const struct target_waitstatus *ws) |
0574c78f GB |
15398 | { |
15399 | struct breakpoint *b; | |
15400 | struct bp_location *bl; | |
15401 | ||
15402 | ALL_BREAKPOINTS (b) | |
15403 | { | |
15404 | if (!is_non_inline_function (b)) | |
15405 | continue; | |
15406 | ||
15407 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15408 | { | |
15409 | if (!bl->shlib_disabled | |
09ac7c10 | 15410 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15411 | return 1; |
15412 | } | |
15413 | } | |
15414 | ||
15415 | return 0; | |
15416 | } | |
15417 | ||
2f202fde JK |
15418 | /* Remove any references to OBJFILE which is going to be freed. */ |
15419 | ||
15420 | void | |
15421 | breakpoint_free_objfile (struct objfile *objfile) | |
15422 | { | |
15423 | struct bp_location **locp, *loc; | |
15424 | ||
15425 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15426 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15427 | loc->symtab = NULL; |
15428 | } | |
15429 | ||
2060206e PA |
15430 | void |
15431 | initialize_breakpoint_ops (void) | |
15432 | { | |
15433 | static int initialized = 0; | |
15434 | ||
15435 | struct breakpoint_ops *ops; | |
15436 | ||
15437 | if (initialized) | |
15438 | return; | |
15439 | initialized = 1; | |
15440 | ||
15441 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15442 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15443 | internal and momentary breakpoints, etc.). */ | |
15444 | ops = &bkpt_base_breakpoint_ops; | |
15445 | *ops = base_breakpoint_ops; | |
15446 | ops->re_set = bkpt_re_set; | |
15447 | ops->insert_location = bkpt_insert_location; | |
15448 | ops->remove_location = bkpt_remove_location; | |
15449 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15450 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15451 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15452 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15453 | |
15454 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15455 | ops = &bkpt_breakpoint_ops; | |
15456 | *ops = bkpt_base_breakpoint_ops; | |
15457 | ops->re_set = bkpt_re_set; | |
15458 | ops->resources_needed = bkpt_resources_needed; | |
15459 | ops->print_it = bkpt_print_it; | |
15460 | ops->print_mention = bkpt_print_mention; | |
15461 | ops->print_recreate = bkpt_print_recreate; | |
15462 | ||
15463 | /* Ranged breakpoints. */ | |
15464 | ops = &ranged_breakpoint_ops; | |
15465 | *ops = bkpt_breakpoint_ops; | |
15466 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15467 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15468 | ops->print_it = print_it_ranged_breakpoint; | |
15469 | ops->print_one = print_one_ranged_breakpoint; | |
15470 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15471 | ops->print_mention = print_mention_ranged_breakpoint; | |
15472 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15473 | ||
15474 | /* Internal breakpoints. */ | |
15475 | ops = &internal_breakpoint_ops; | |
15476 | *ops = bkpt_base_breakpoint_ops; | |
15477 | ops->re_set = internal_bkpt_re_set; | |
15478 | ops->check_status = internal_bkpt_check_status; | |
15479 | ops->print_it = internal_bkpt_print_it; | |
15480 | ops->print_mention = internal_bkpt_print_mention; | |
15481 | ||
15482 | /* Momentary breakpoints. */ | |
15483 | ops = &momentary_breakpoint_ops; | |
15484 | *ops = bkpt_base_breakpoint_ops; | |
15485 | ops->re_set = momentary_bkpt_re_set; | |
15486 | ops->check_status = momentary_bkpt_check_status; | |
15487 | ops->print_it = momentary_bkpt_print_it; | |
15488 | ops->print_mention = momentary_bkpt_print_mention; | |
15489 | ||
55aa24fb SDJ |
15490 | /* Probe breakpoints. */ |
15491 | ops = &bkpt_probe_breakpoint_ops; | |
15492 | *ops = bkpt_breakpoint_ops; | |
15493 | ops->insert_location = bkpt_probe_insert_location; | |
15494 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15495 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15496 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15497 | |
2060206e PA |
15498 | /* Watchpoints. */ |
15499 | ops = &watchpoint_breakpoint_ops; | |
15500 | *ops = base_breakpoint_ops; | |
15501 | ops->re_set = re_set_watchpoint; | |
15502 | ops->insert_location = insert_watchpoint; | |
15503 | ops->remove_location = remove_watchpoint; | |
15504 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15505 | ops->check_status = check_status_watchpoint; | |
15506 | ops->resources_needed = resources_needed_watchpoint; | |
15507 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15508 | ops->print_it = print_it_watchpoint; | |
15509 | ops->print_mention = print_mention_watchpoint; | |
15510 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15511 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15512 | |
15513 | /* Masked watchpoints. */ | |
15514 | ops = &masked_watchpoint_breakpoint_ops; | |
15515 | *ops = watchpoint_breakpoint_ops; | |
15516 | ops->insert_location = insert_masked_watchpoint; | |
15517 | ops->remove_location = remove_masked_watchpoint; | |
15518 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15519 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15520 | ops->print_it = print_it_masked_watchpoint; | |
15521 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15522 | ops->print_mention = print_mention_masked_watchpoint; | |
15523 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15524 | ||
15525 | /* Tracepoints. */ | |
15526 | ops = &tracepoint_breakpoint_ops; | |
15527 | *ops = base_breakpoint_ops; | |
15528 | ops->re_set = tracepoint_re_set; | |
15529 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15530 | ops->print_one_detail = tracepoint_print_one_detail; | |
15531 | ops->print_mention = tracepoint_print_mention; | |
15532 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15533 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15534 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15535 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15536 | |
55aa24fb SDJ |
15537 | /* Probe tracepoints. */ |
15538 | ops = &tracepoint_probe_breakpoint_ops; | |
15539 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15540 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15541 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15542 | |
983af33b SDJ |
15543 | /* Static tracepoints with marker (`-m'). */ |
15544 | ops = &strace_marker_breakpoint_ops; | |
15545 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15546 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15547 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15548 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15549 | |
15550 | /* Fork catchpoints. */ | |
15551 | ops = &catch_fork_breakpoint_ops; | |
15552 | *ops = base_breakpoint_ops; | |
15553 | ops->insert_location = insert_catch_fork; | |
15554 | ops->remove_location = remove_catch_fork; | |
15555 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15556 | ops->print_it = print_it_catch_fork; | |
15557 | ops->print_one = print_one_catch_fork; | |
15558 | ops->print_mention = print_mention_catch_fork; | |
15559 | ops->print_recreate = print_recreate_catch_fork; | |
15560 | ||
15561 | /* Vfork catchpoints. */ | |
15562 | ops = &catch_vfork_breakpoint_ops; | |
15563 | *ops = base_breakpoint_ops; | |
15564 | ops->insert_location = insert_catch_vfork; | |
15565 | ops->remove_location = remove_catch_vfork; | |
15566 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15567 | ops->print_it = print_it_catch_vfork; | |
15568 | ops->print_one = print_one_catch_vfork; | |
15569 | ops->print_mention = print_mention_catch_vfork; | |
15570 | ops->print_recreate = print_recreate_catch_vfork; | |
15571 | ||
15572 | /* Exec catchpoints. */ | |
15573 | ops = &catch_exec_breakpoint_ops; | |
15574 | *ops = base_breakpoint_ops; | |
2060206e PA |
15575 | ops->insert_location = insert_catch_exec; |
15576 | ops->remove_location = remove_catch_exec; | |
15577 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15578 | ops->print_it = print_it_catch_exec; | |
15579 | ops->print_one = print_one_catch_exec; | |
15580 | ops->print_mention = print_mention_catch_exec; | |
15581 | ops->print_recreate = print_recreate_catch_exec; | |
15582 | ||
edcc5120 TT |
15583 | /* Solib-related catchpoints. */ |
15584 | ops = &catch_solib_breakpoint_ops; | |
15585 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15586 | ops->insert_location = insert_catch_solib; |
15587 | ops->remove_location = remove_catch_solib; | |
15588 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15589 | ops->check_status = check_status_catch_solib; | |
15590 | ops->print_it = print_it_catch_solib; | |
15591 | ops->print_one = print_one_catch_solib; | |
15592 | ops->print_mention = print_mention_catch_solib; | |
15593 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15594 | |
15595 | ops = &dprintf_breakpoint_ops; | |
15596 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15597 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15598 | ops->resources_needed = bkpt_resources_needed; |
15599 | ops->print_it = bkpt_print_it; | |
15600 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15601 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15602 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15603 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15604 | } |
15605 | ||
8bfd80db YQ |
15606 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15607 | ||
15608 | static struct cmd_list_element *enablebreaklist = NULL; | |
15609 | ||
c906108c | 15610 | void |
fba45db2 | 15611 | _initialize_breakpoint (void) |
c906108c SS |
15612 | { |
15613 | struct cmd_list_element *c; | |
15614 | ||
2060206e PA |
15615 | initialize_breakpoint_ops (); |
15616 | ||
84acb35a | 15617 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15618 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15619 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15620 | |
55aa24fb | 15621 | breakpoint_objfile_key |
43dce439 | 15622 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15623 | |
c906108c SS |
15624 | breakpoint_chain = 0; |
15625 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15626 | before a breakpoint is set. */ | |
15627 | breakpoint_count = 0; | |
15628 | ||
1042e4c0 SS |
15629 | tracepoint_count = 0; |
15630 | ||
1bedd215 AC |
15631 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15632 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15633 | Usage is `ignore N COUNT'.")); | |
c906108c | 15634 | |
1bedd215 | 15635 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15636 | Set commands to be executed when the given breakpoints are hit.\n\ |
15637 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15638 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15639 | (e.g. `5-7').\n\ | |
c906108c SS |
15640 | With no argument, the targeted breakpoint is the last one set.\n\ |
15641 | The commands themselves follow starting on the next line.\n\ | |
15642 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15643 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15644 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15645 | |
d55637df | 15646 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15647 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15648 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15649 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15650 | set_cmd_completer (c, condition_completer); |
c906108c | 15651 | |
1bedd215 | 15652 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15653 | Set a temporary breakpoint.\n\ |
c906108c SS |
15654 | Like \"break\" except the breakpoint is only temporary,\n\ |
15655 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15656 | by using \"enable delete\" on the breakpoint number.\n\ |
15657 | \n" | |
15658 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15659 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15660 | |
1bedd215 | 15661 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15662 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15663 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15664 | some target hardware may not have this support.\n\ |
15665 | \n" | |
15666 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15667 | set_cmd_completer (c, location_completer); |
c906108c | 15668 | |
1bedd215 | 15669 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15670 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15671 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15672 | so it will be deleted when hit.\n\ |
15673 | \n" | |
15674 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15675 | set_cmd_completer (c, location_completer); |
c906108c | 15676 | |
1bedd215 AC |
15677 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15678 | Enable some breakpoints.\n\ | |
c906108c SS |
15679 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15680 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15681 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15682 | With a subcommand you can enable temporarily."), |
c906108c | 15683 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15684 | |
15685 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15686 | ||
84951ab5 | 15687 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15688 | Enable some breakpoints.\n\ |
c906108c SS |
15689 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15690 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15691 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15692 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15693 | |
1a966eab AC |
15694 | add_cmd ("once", no_class, enable_once_command, _("\ |
15695 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15696 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15697 | &enablebreaklist); |
15698 | ||
1a966eab AC |
15699 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15700 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15701 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15702 | &enablebreaklist); |
15703 | ||
816338b5 SS |
15704 | add_cmd ("count", no_class, enable_count_command, _("\ |
15705 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15706 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15707 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15708 | &enablebreaklist); | |
15709 | ||
1a966eab AC |
15710 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15711 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15712 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15713 | &enablelist); |
15714 | ||
1a966eab AC |
15715 | add_cmd ("once", no_class, enable_once_command, _("\ |
15716 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15717 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15718 | &enablelist); |
15719 | ||
15720 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15721 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15722 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15723 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15724 | &enablelist); |
15725 | ||
1bedd215 AC |
15726 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15727 | Disable some breakpoints.\n\ | |
c906108c SS |
15728 | Arguments are breakpoint numbers with spaces in between.\n\ |
15729 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15730 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15731 | &disablelist, "disable ", 1, &cmdlist); |
15732 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15733 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15734 | |
1a966eab AC |
15735 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15736 | Disable some breakpoints.\n\ | |
c906108c SS |
15737 | Arguments are breakpoint numbers with spaces in between.\n\ |
15738 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15739 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15740 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15741 | &disablelist); |
15742 | ||
1bedd215 AC |
15743 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15744 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15745 | Arguments are breakpoint numbers with spaces in between.\n\ |
15746 | To delete all breakpoints, give no argument.\n\ | |
15747 | \n\ | |
15748 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15749 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15750 | &deletelist, "delete ", 1, &cmdlist); |
15751 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15752 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15753 | |
1a966eab AC |
15754 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15755 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15756 | Arguments are breakpoint numbers with spaces in between.\n\ |
15757 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15758 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15759 | &deletelist); |
15760 | ||
1bedd215 | 15761 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15762 | Clear breakpoint at specified location.\n\ |
15763 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15764 | \n\ |
15765 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15766 | is executing in.\n" |
15767 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15768 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15769 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15770 | |
1bedd215 | 15771 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15772 | Set breakpoint at specified location.\n" |
31e2b00f | 15773 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15774 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15775 | |
c906108c SS |
15776 | add_com_alias ("b", "break", class_run, 1); |
15777 | add_com_alias ("br", "break", class_run, 1); | |
15778 | add_com_alias ("bre", "break", class_run, 1); | |
15779 | add_com_alias ("brea", "break", class_run, 1); | |
15780 | ||
c906108c SS |
15781 | if (dbx_commands) |
15782 | { | |
1bedd215 AC |
15783 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15784 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15785 | &stoplist, "stop ", 1, &cmdlist); |
15786 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15787 | _("Break in function or address."), &stoplist); |
c5aa993b | 15788 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15789 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15790 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15791 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15792 | The \"Type\" column indicates one of:\n\ |
15793 | \tbreakpoint - normal breakpoint\n\ | |
15794 | \twatchpoint - watchpoint\n\ | |
15795 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15796 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15797 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15798 | address and file/line number respectively.\n\ |
15799 | \n\ | |
15800 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15801 | are set to the address of the last breakpoint listed unless the command\n\ |
15802 | is prefixed with \"server \".\n\n\ | |
c906108c | 15803 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15804 | breakpoint set.")); |
c906108c SS |
15805 | } |
15806 | ||
11db9430 | 15807 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15808 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15809 | The \"Type\" column indicates one of:\n\ |
15810 | \tbreakpoint - normal breakpoint\n\ | |
15811 | \twatchpoint - watchpoint\n\ | |
15812 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15813 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15814 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15815 | address and file/line number respectively.\n\ |
15816 | \n\ | |
15817 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15818 | are set to the address of the last breakpoint listed unless the command\n\ |
15819 | is prefixed with \"server \".\n\n\ | |
c906108c | 15820 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15821 | breakpoint set.")); |
c906108c | 15822 | |
6b04bdb7 MS |
15823 | add_info_alias ("b", "breakpoints", 1); |
15824 | ||
1a966eab AC |
15825 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15826 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15827 | The \"Type\" column indicates one of:\n\ |
15828 | \tbreakpoint - normal breakpoint\n\ | |
15829 | \twatchpoint - watchpoint\n\ | |
15830 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15831 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15832 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15833 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15834 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15835 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15836 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15837 | address and file/line number respectively.\n\ |
15838 | \n\ | |
15839 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15840 | are set to the address of the last breakpoint listed unless the command\n\ |
15841 | is prefixed with \"server \".\n\n\ | |
c906108c | 15842 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15843 | breakpoint set."), |
c906108c SS |
15844 | &maintenanceinfolist); |
15845 | ||
44feb3ce TT |
15846 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15847 | Set catchpoints to catch events."), | |
15848 | &catch_cmdlist, "catch ", | |
15849 | 0/*allow-unknown*/, &cmdlist); | |
15850 | ||
15851 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15852 | Set temporary catchpoints to catch events."), | |
15853 | &tcatch_cmdlist, "tcatch ", | |
15854 | 0/*allow-unknown*/, &cmdlist); | |
15855 | ||
44feb3ce TT |
15856 | add_catch_command ("fork", _("Catch calls to fork."), |
15857 | catch_fork_command_1, | |
a96d9b2e | 15858 | NULL, |
44feb3ce TT |
15859 | (void *) (uintptr_t) catch_fork_permanent, |
15860 | (void *) (uintptr_t) catch_fork_temporary); | |
15861 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15862 | catch_fork_command_1, | |
a96d9b2e | 15863 | NULL, |
44feb3ce TT |
15864 | (void *) (uintptr_t) catch_vfork_permanent, |
15865 | (void *) (uintptr_t) catch_vfork_temporary); | |
15866 | add_catch_command ("exec", _("Catch calls to exec."), | |
15867 | catch_exec_command_1, | |
a96d9b2e SDJ |
15868 | NULL, |
15869 | CATCH_PERMANENT, | |
15870 | CATCH_TEMPORARY); | |
edcc5120 TT |
15871 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15872 | Usage: catch load [REGEX]\n\ | |
15873 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15874 | catch_load_command_1, | |
15875 | NULL, | |
15876 | CATCH_PERMANENT, | |
15877 | CATCH_TEMPORARY); | |
15878 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15879 | Usage: catch unload [REGEX]\n\ | |
15880 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15881 | catch_unload_command_1, | |
15882 | NULL, | |
15883 | CATCH_PERMANENT, | |
15884 | CATCH_TEMPORARY); | |
c5aa993b | 15885 | |
1bedd215 AC |
15886 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15887 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15888 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15889 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15890 | an expression changes.\n\ |
15891 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15892 | the memory to which it refers.")); | |
65d12d83 | 15893 | set_cmd_completer (c, expression_completer); |
c906108c | 15894 | |
1bedd215 AC |
15895 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15896 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15897 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15898 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15899 | an expression is read.\n\ |
15900 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15901 | the memory to which it refers.")); | |
65d12d83 | 15902 | set_cmd_completer (c, expression_completer); |
c906108c | 15903 | |
1bedd215 AC |
15904 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15905 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15906 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15907 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15908 | an expression is either read or written.\n\ |
15909 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15910 | the memory to which it refers.")); | |
65d12d83 | 15911 | set_cmd_completer (c, expression_completer); |
c906108c | 15912 | |
11db9430 | 15913 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15914 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15915 | |
920d2a44 AC |
15916 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15917 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15918 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15919 | &can_use_hw_watchpoints, _("\ | |
15920 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15921 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15922 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15923 | such is available. (However, any hardware watchpoints that were\n\ | |
15924 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15925 | hardware.)"), |
15926 | NULL, | |
920d2a44 | 15927 | show_can_use_hw_watchpoints, |
85c07804 | 15928 | &setlist, &showlist); |
c906108c SS |
15929 | |
15930 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15931 | |
1042e4c0 SS |
15932 | /* Tracepoint manipulation commands. */ |
15933 | ||
15934 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15935 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15936 | \n" |
15937 | BREAK_ARGS_HELP ("trace") "\n\ | |
15938 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15939 | set_cmd_completer (c, location_completer); | |
15940 | ||
15941 | add_com_alias ("tp", "trace", class_alias, 0); | |
15942 | add_com_alias ("tr", "trace", class_alias, 1); | |
15943 | add_com_alias ("tra", "trace", class_alias, 1); | |
15944 | add_com_alias ("trac", "trace", class_alias, 1); | |
15945 | ||
7a697b8d | 15946 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15947 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15948 | \n" |
15949 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15950 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15951 | set_cmd_completer (c, location_completer); | |
15952 | ||
0fb4aa4b | 15953 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15954 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15955 | \n\ |
15956 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15957 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15958 | or -m MARKER_ID.\n\n\ | |
15959 | If a marker id is specified, probe the marker with that name. With\n\ | |
15960 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15961 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15962 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15963 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15964 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15965 | \n\ | |
15966 | CONDITION is a boolean expression.\n\ | |
629500fa | 15967 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15968 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15969 | conditions are different.\n\ | |
0fb4aa4b PA |
15970 | \n\ |
15971 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15972 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15973 | set_cmd_completer (c, location_completer); | |
15974 | ||
11db9430 | 15975 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15976 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15977 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15978 | last tracepoint set.")); | |
15979 | ||
15980 | add_info_alias ("tp", "tracepoints", 1); | |
15981 | ||
15982 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15983 | Delete specified tracepoints.\n\ | |
15984 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15985 | No argument means delete all tracepoints."), | |
15986 | &deletelist); | |
7e20dfcd | 15987 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15988 | |
15989 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15990 | Disable specified tracepoints.\n\ | |
15991 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15992 | No argument means disable all tracepoints."), | |
15993 | &disablelist); | |
15994 | deprecate_cmd (c, "disable"); | |
15995 | ||
15996 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15997 | Enable specified tracepoints.\n\ | |
15998 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15999 | No argument means enable all tracepoints."), | |
16000 | &enablelist); | |
16001 | deprecate_cmd (c, "enable"); | |
16002 | ||
16003 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16004 | Set the passcount for a tracepoint.\n\ | |
16005 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16006 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16007 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16008 | ||
6149aea9 PA |
16009 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16010 | _("Save breakpoint definitions as a script."), | |
16011 | &save_cmdlist, "save ", | |
16012 | 0/*allow-unknown*/, &cmdlist); | |
16013 | ||
16014 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16015 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16016 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16017 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16018 | session to restore them."), | |
16019 | &save_cmdlist); | |
16020 | set_cmd_completer (c, filename_completer); | |
16021 | ||
16022 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16023 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16024 | Use the 'source' command in another debug session to restore them."), |
16025 | &save_cmdlist); | |
1042e4c0 SS |
16026 | set_cmd_completer (c, filename_completer); |
16027 | ||
6149aea9 PA |
16028 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16029 | deprecate_cmd (c, "save tracepoints"); | |
16030 | ||
1bedd215 | 16031 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16032 | Breakpoint specific settings\n\ |
16033 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16034 | pending breakpoint behavior"), |
fa8d40ab JJ |
16035 | &breakpoint_set_cmdlist, "set breakpoint ", |
16036 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16037 | add_prefix_cmd ("breakpoint", class_maintenance, show_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_show_cmdlist, "show breakpoint ", |
16042 | 0/*allow-unknown*/, &showlist); | |
16043 | ||
7915a72c AC |
16044 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16045 | &pending_break_support, _("\ | |
16046 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16047 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16048 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16049 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16050 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16051 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16052 | NULL, |
920d2a44 | 16053 | show_pending_break_support, |
6e1d7d6c AC |
16054 | &breakpoint_set_cmdlist, |
16055 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16056 | |
16057 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16058 | |
16059 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16060 | &automatic_hardware_breakpoints, _("\ | |
16061 | Set automatic usage of hardware breakpoints."), _("\ | |
16062 | Show automatic usage of hardware breakpoints."), _("\ | |
16063 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16064 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16065 | a warning will be emitted for such breakpoints."), | |
16066 | NULL, | |
16067 | show_automatic_hardware_breakpoints, | |
16068 | &breakpoint_set_cmdlist, | |
16069 | &breakpoint_show_cmdlist); | |
74960c60 | 16070 | |
a25a5a45 PA |
16071 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16072 | &always_inserted_mode, _("\ | |
74960c60 VP |
16073 | Set mode for inserting breakpoints."), _("\ |
16074 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16075 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16076 | they're created, kept inserted even when execution stops, and removed\n\ | |
16077 | only when the user deletes them. When this mode is off (the default),\n\ | |
16078 | breakpoints are inserted only when execution continues, and removed\n\ | |
16079 | when execution stops."), | |
72d0e2c5 YQ |
16080 | NULL, |
16081 | &show_always_inserted_mode, | |
16082 | &breakpoint_set_cmdlist, | |
16083 | &breakpoint_show_cmdlist); | |
f1310107 | 16084 | |
b775012e LM |
16085 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16086 | condition_evaluation_enums, | |
16087 | &condition_evaluation_mode_1, _("\ | |
16088 | Set mode of breakpoint condition evaluation."), _("\ | |
16089 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16090 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16091 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16092 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16093 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16094 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16095 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16096 | be set to \"gdb\""), | |
16097 | &set_condition_evaluation_mode, | |
16098 | &show_condition_evaluation_mode, | |
16099 | &breakpoint_set_cmdlist, | |
16100 | &breakpoint_show_cmdlist); | |
16101 | ||
f1310107 TJB |
16102 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16103 | Set a breakpoint for an address range.\n\ | |
16104 | break-range START-LOCATION, END-LOCATION\n\ | |
16105 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16106 | LINENUM, for that line in the current file,\n\ | |
16107 | FILE:LINENUM, for that line in that file,\n\ | |
16108 | +OFFSET, for that number of lines after the current line\n\ | |
16109 | or the start of the range\n\ | |
16110 | FUNCTION, for the first line in that function,\n\ | |
16111 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16112 | *ADDRESS, for the instruction at that address.\n\ | |
16113 | \n\ | |
16114 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16115 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16116 | range (including START-LOCATION and END-LOCATION).")); | |
16117 | ||
e7e0cddf | 16118 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16119 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16120 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16121 | location may be a linespec, explicit, or address location.\n" |
16122 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16123 | set_cmd_completer (c, location_completer); |
16124 | ||
16125 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16126 | dprintf_style_enums, &dprintf_style, _("\ | |
16127 | Set the style of usage for dynamic printf."), _("\ | |
16128 | Show the style of usage for dynamic printf."), _("\ | |
16129 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16130 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16131 | console, as with the \"printf\" command.\n\ | |
16132 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16133 | program; by default printf(), but you can choose a different function or\n\ | |
16134 | output stream by setting dprintf-function and dprintf-channel."), | |
16135 | update_dprintf_commands, NULL, | |
16136 | &setlist, &showlist); | |
16137 | ||
16138 | dprintf_function = xstrdup ("printf"); | |
16139 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16140 | &dprintf_function, _("\ | |
16141 | Set the function to use for dynamic printf"), _("\ | |
16142 | Show the function to use for dynamic printf"), NULL, | |
16143 | update_dprintf_commands, NULL, | |
16144 | &setlist, &showlist); | |
16145 | ||
16146 | dprintf_channel = xstrdup (""); | |
16147 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16148 | &dprintf_channel, _("\ | |
16149 | Set the channel to use for dynamic printf"), _("\ | |
16150 | Show the channel to use for dynamic printf"), NULL, | |
16151 | update_dprintf_commands, NULL, | |
16152 | &setlist, &showlist); | |
16153 | ||
d3ce09f5 SS |
16154 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16155 | &disconnected_dprintf, _("\ | |
16156 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16157 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16158 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16159 | even if GDB disconnects or detaches from the target."), | |
16160 | NULL, | |
16161 | NULL, | |
16162 | &setlist, &showlist); | |
16163 | ||
16164 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16165 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16166 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16167 | ||
765dc015 | 16168 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16169 | |
16170 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16171 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16172 | } |