Commit | Line | Data |
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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; | |
d55637df TT |
924 | |
925 | if (text[0] == '$') | |
926 | { | |
927 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
928 | if (!isdigit (text[1])) |
929 | complete_internalvar (tracker, &text[1]); | |
930 | return; | |
d55637df TT |
931 | } |
932 | ||
933 | /* We're completing the breakpoint number. */ | |
934 | len = strlen (text); | |
935 | ||
936 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
937 | { |
938 | char number[50]; | |
939 | ||
940 | xsnprintf (number, sizeof (number), "%d", b->number); | |
941 | ||
942 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
943 | { |
944 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
945 | tracker.add_completion (std::move (copy)); | |
946 | } | |
58ce7251 | 947 | } |
d55637df | 948 | |
eb3ff9a5 | 949 | return; |
d55637df TT |
950 | } |
951 | ||
952 | /* We're completing the expression part. */ | |
f1735a53 | 953 | text = skip_spaces (space); |
eb3ff9a5 | 954 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
955 | } |
956 | ||
c906108c SS |
957 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
958 | ||
959 | static void | |
0b39b52e | 960 | condition_command (const char *arg, int from_tty) |
c906108c | 961 | { |
52f0bd74 | 962 | struct breakpoint *b; |
0b39b52e | 963 | const char *p; |
52f0bd74 | 964 | int bnum; |
c906108c SS |
965 | |
966 | if (arg == 0) | |
e2e0b3e5 | 967 | error_no_arg (_("breakpoint number")); |
c906108c SS |
968 | |
969 | p = arg; | |
970 | bnum = get_number (&p); | |
5c44784c | 971 | if (bnum == 0) |
8a3fe4f8 | 972 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
973 | |
974 | ALL_BREAKPOINTS (b) | |
975 | if (b->number == bnum) | |
2f069f6f | 976 | { |
6dddc817 DE |
977 | /* Check if this breakpoint has a "stop" method implemented in an |
978 | extension language. This method and conditions entered into GDB | |
979 | from the CLI are mutually exclusive. */ | |
980 | const struct extension_language_defn *extlang | |
981 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
982 | ||
983 | if (extlang != NULL) | |
984 | { | |
985 | error (_("Only one stop condition allowed. There is currently" | |
986 | " a %s stop condition defined for this breakpoint."), | |
987 | ext_lang_capitalized_name (extlang)); | |
988 | } | |
2566ad2d | 989 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
990 | |
991 | if (is_breakpoint (b)) | |
44702360 | 992 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 993 | |
2f069f6f JB |
994 | return; |
995 | } | |
c906108c | 996 | |
8a3fe4f8 | 997 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
998 | } |
999 | ||
a7bdde9e VP |
1000 | /* Check that COMMAND do not contain commands that are suitable |
1001 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1002 | Throw if any such commands is found. */ |
1003 | ||
a7bdde9e VP |
1004 | static void |
1005 | check_no_tracepoint_commands (struct command_line *commands) | |
1006 | { | |
1007 | struct command_line *c; | |
cc59ec59 | 1008 | |
a7bdde9e VP |
1009 | for (c = commands; c; c = c->next) |
1010 | { | |
1011 | int i; | |
1012 | ||
1013 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1014 | error (_("The 'while-stepping' command can " |
1015 | "only be used for tracepoints")); | |
a7bdde9e VP |
1016 | |
1017 | for (i = 0; i < c->body_count; ++i) | |
1018 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1019 | ||
1020 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1021 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1022 | command directly. */ |
1023 | if (strstr (c->line, "collect ") == c->line) | |
1024 | error (_("The 'collect' command can only be used for tracepoints")); | |
1025 | ||
51661e93 VP |
1026 | if (strstr (c->line, "teval ") == c->line) |
1027 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1028 | } |
1029 | } | |
1030 | ||
c1fc2657 | 1031 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1032 | { |
c1fc2657 | 1033 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1034 | }; |
1035 | ||
d77f58be SS |
1036 | /* Encapsulate tests for different types of tracepoints. */ |
1037 | ||
3b0871f4 SM |
1038 | static bool |
1039 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1040 | { |
1041 | return (type == bp_tracepoint | |
1042 | || type == bp_fast_tracepoint | |
1043 | || type == bp_static_tracepoint); | |
1044 | } | |
1045 | ||
3b0871f4 SM |
1046 | static bool |
1047 | is_longjmp_type (bptype type) | |
1048 | { | |
1049 | return type == bp_longjmp || type == bp_exception; | |
1050 | } | |
1051 | ||
a7bdde9e | 1052 | int |
d77f58be | 1053 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1054 | { |
d9b3f62e | 1055 | return is_tracepoint_type (b->type); |
a7bdde9e | 1056 | } |
d9b3f62e | 1057 | |
a5e364af SM |
1058 | /* Factory function to create an appropriate instance of breakpoint given |
1059 | TYPE. */ | |
1060 | ||
1061 | static std::unique_ptr<breakpoint> | |
1062 | new_breakpoint_from_type (bptype type) | |
1063 | { | |
1064 | breakpoint *b; | |
1065 | ||
1066 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1067 | b = new tracepoint (); |
3b0871f4 | 1068 | else if (is_longjmp_type (type)) |
c1fc2657 | 1069 | b = new longjmp_breakpoint (); |
a5e364af SM |
1070 | else |
1071 | b = new breakpoint (); | |
1072 | ||
1073 | return std::unique_ptr<breakpoint> (b); | |
1074 | } | |
1075 | ||
e5dd4106 | 1076 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1077 | breakpoint. This function will throw an exception if a problem is |
1078 | found. */ | |
48cb2d85 | 1079 | |
95a42b64 TT |
1080 | static void |
1081 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1082 | struct command_line *commands) | |
48cb2d85 | 1083 | { |
d77f58be | 1084 | if (is_tracepoint (b)) |
a7bdde9e | 1085 | { |
c9a6ce02 | 1086 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1087 | struct command_line *c; |
1088 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1089 | |
1090 | /* Reset the while-stepping step count. The previous commands | |
1091 | might have included a while-stepping action, while the new | |
1092 | ones might not. */ | |
1093 | t->step_count = 0; | |
1094 | ||
1095 | /* We need to verify that each top-level element of commands is | |
1096 | valid for tracepoints, that there's at most one | |
1097 | while-stepping element, and that the while-stepping's body | |
1098 | has valid tracing commands excluding nested while-stepping. | |
1099 | We also need to validate the tracepoint action line in the | |
1100 | context of the tracepoint --- validate_actionline actually | |
1101 | has side effects, like setting the tracepoint's | |
1102 | while-stepping STEP_COUNT, in addition to checking if the | |
1103 | collect/teval actions parse and make sense in the | |
1104 | tracepoint's context. */ | |
a7bdde9e VP |
1105 | for (c = commands; c; c = c->next) |
1106 | { | |
a7bdde9e VP |
1107 | if (c->control_type == while_stepping_control) |
1108 | { | |
1109 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1110 | error (_("The 'while-stepping' command " |
1111 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1112 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1113 | error (_("The 'while-stepping' command " |
1114 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1115 | |
1116 | if (while_stepping) | |
3e43a32a MS |
1117 | error (_("The 'while-stepping' command " |
1118 | "can be used only once")); | |
a7bdde9e VP |
1119 | else |
1120 | while_stepping = c; | |
1121 | } | |
c9a6ce02 PA |
1122 | |
1123 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1124 | } |
1125 | if (while_stepping) | |
1126 | { | |
1127 | struct command_line *c2; | |
1128 | ||
1129 | gdb_assert (while_stepping->body_count == 1); | |
1130 | c2 = while_stepping->body_list[0]; | |
1131 | for (; c2; c2 = c2->next) | |
1132 | { | |
a7bdde9e VP |
1133 | if (c2->control_type == while_stepping_control) |
1134 | error (_("The 'while-stepping' command cannot be nested")); | |
1135 | } | |
1136 | } | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | check_no_tracepoint_commands (commands); | |
1141 | } | |
95a42b64 TT |
1142 | } |
1143 | ||
0fb4aa4b PA |
1144 | /* Return a vector of all the static tracepoints set at ADDR. The |
1145 | caller is responsible for releasing the vector. */ | |
1146 | ||
1147 | VEC(breakpoint_p) * | |
1148 | static_tracepoints_here (CORE_ADDR addr) | |
1149 | { | |
1150 | struct breakpoint *b; | |
1151 | VEC(breakpoint_p) *found = 0; | |
1152 | struct bp_location *loc; | |
1153 | ||
1154 | ALL_BREAKPOINTS (b) | |
1155 | if (b->type == bp_static_tracepoint) | |
1156 | { | |
1157 | for (loc = b->loc; loc; loc = loc->next) | |
1158 | if (loc->address == addr) | |
1159 | VEC_safe_push(breakpoint_p, found, b); | |
1160 | } | |
1161 | ||
1162 | return found; | |
1163 | } | |
1164 | ||
95a42b64 | 1165 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1166 | validate that only allowed commands are included. */ |
95a42b64 TT |
1167 | |
1168 | void | |
4a64f543 | 1169 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1170 | command_line_up &&commands) |
95a42b64 | 1171 | { |
93921405 | 1172 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1173 | |
d1b0a7bf | 1174 | b->commands = std::move (commands); |
8d3788bd | 1175 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1176 | } |
1177 | ||
45a43567 TT |
1178 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1179 | is not the same as the "silent" that may appear in the breakpoint's | |
1180 | commands. */ | |
1181 | ||
1182 | void | |
1183 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1184 | { | |
1185 | int old_silent = b->silent; | |
1186 | ||
1187 | b->silent = silent; | |
1188 | if (old_silent != silent) | |
8d3788bd | 1189 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1190 | } |
1191 | ||
1192 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1193 | breakpoint work for any thread. */ | |
1194 | ||
1195 | void | |
1196 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1197 | { | |
1198 | int old_thread = b->thread; | |
1199 | ||
1200 | b->thread = thread; | |
1201 | if (old_thread != thread) | |
8d3788bd | 1202 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1203 | } |
1204 | ||
1205 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1206 | breakpoint work for any task. */ | |
1207 | ||
1208 | void | |
1209 | breakpoint_set_task (struct breakpoint *b, int task) | |
1210 | { | |
1211 | int old_task = b->task; | |
1212 | ||
1213 | b->task = task; | |
1214 | if (old_task != task) | |
8d3788bd | 1215 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1216 | } |
1217 | ||
95a42b64 TT |
1218 | void |
1219 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1220 | { |
9a3c8263 | 1221 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1222 | |
6f937416 | 1223 | validate_actionline (line, b); |
a7bdde9e VP |
1224 | } |
1225 | ||
95a42b64 | 1226 | static void |
896b6bda | 1227 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1228 | struct command_line *control) |
95a42b64 | 1229 | { |
d1b0a7bf | 1230 | counted_command_line cmd; |
95a42b64 | 1231 | |
896b6bda PA |
1232 | std::string new_arg; |
1233 | ||
95a42b64 TT |
1234 | if (arg == NULL || !*arg) |
1235 | { | |
86b17b60 | 1236 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1237 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1238 | breakpoint_count); | |
95a42b64 | 1239 | else if (breakpoint_count > 0) |
896b6bda | 1240 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1241 | arg = new_arg.c_str (); |
1242 | } | |
1243 | ||
1244 | map_breakpoint_numbers | |
1245 | (arg, [&] (breakpoint *b) | |
1246 | { | |
1247 | if (cmd == NULL) | |
1248 | { | |
48649e1b | 1249 | if (control != NULL) |
d1b0a7bf | 1250 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1251 | else |
1252 | { | |
81b1e71c TT |
1253 | std::string str |
1254 | = string_printf (_("Type commands for breakpoint(s) " | |
1255 | "%s, one per line."), | |
1256 | arg); | |
48649e1b | 1257 | |
81b1e71c | 1258 | cmd = read_command_lines (&str[0], |
d1b0a7bf TT |
1259 | from_tty, 1, |
1260 | (is_tracepoint (b) | |
1261 | ? check_tracepoint_command : 0), | |
1262 | b); | |
48649e1b | 1263 | } |
48649e1b TT |
1264 | } |
1265 | ||
1266 | /* If a breakpoint was on the list more than once, we don't need to | |
1267 | do anything. */ | |
1268 | if (b->commands != cmd) | |
1269 | { | |
d1b0a7bf | 1270 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1271 | b->commands = cmd; |
1272 | observer_notify_breakpoint_modified (b); | |
1273 | } | |
1274 | }); | |
95a42b64 TT |
1275 | } |
1276 | ||
1277 | static void | |
0b39b52e | 1278 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1279 | { |
1280 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1281 | } |
40c03ae8 EZ |
1282 | |
1283 | /* Like commands_command, but instead of reading the commands from | |
1284 | input stream, takes them from an already parsed command structure. | |
1285 | ||
1286 | This is used by cli-script.c to DTRT with breakpoint commands | |
1287 | that are part of if and while bodies. */ | |
1288 | enum command_control_type | |
896b6bda | 1289 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1290 | { |
95a42b64 TT |
1291 | commands_command_1 (arg, 0, cmd); |
1292 | return simple_control; | |
40c03ae8 | 1293 | } |
876fa593 JK |
1294 | |
1295 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1296 | ||
1297 | static int | |
1298 | bp_location_has_shadow (struct bp_location *bl) | |
1299 | { | |
1300 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1301 | return 0; | |
1302 | if (!bl->inserted) | |
1303 | return 0; | |
1304 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1305 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1306 | return 0; |
1307 | return 1; | |
1308 | } | |
1309 | ||
9d497a19 PA |
1310 | /* Update BUF, which is LEN bytes read from the target address |
1311 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1312 | contents. | |
1313 | ||
1314 | If READBUF is not NULL, this buffer must not overlap with the of | |
1315 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1316 | failed assertion internal error will be raised. */ | |
1317 | ||
1318 | static void | |
1319 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1320 | const gdb_byte *writebuf_org, | |
1321 | ULONGEST memaddr, LONGEST len, | |
1322 | struct bp_target_info *target_info, | |
1323 | struct gdbarch *gdbarch) | |
1324 | { | |
1325 | /* Now do full processing of the found relevant range of elements. */ | |
1326 | CORE_ADDR bp_addr = 0; | |
1327 | int bp_size = 0; | |
1328 | int bptoffset = 0; | |
1329 | ||
1330 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1331 | current_program_space->aspace, 0)) | |
1332 | { | |
1333 | /* The breakpoint is inserted in a different address space. */ | |
1334 | return; | |
1335 | } | |
1336 | ||
1337 | /* Addresses and length of the part of the breakpoint that | |
1338 | we need to copy. */ | |
1339 | bp_addr = target_info->placed_address; | |
1340 | bp_size = target_info->shadow_len; | |
1341 | ||
1342 | if (bp_addr + bp_size <= memaddr) | |
1343 | { | |
1344 | /* The breakpoint is entirely before the chunk of memory we are | |
1345 | reading. */ | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | if (bp_addr >= memaddr + len) | |
1350 | { | |
1351 | /* The breakpoint is entirely after the chunk of memory we are | |
1352 | reading. */ | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | /* Offset within shadow_contents. */ | |
1357 | if (bp_addr < memaddr) | |
1358 | { | |
1359 | /* Only copy the second part of the breakpoint. */ | |
1360 | bp_size -= memaddr - bp_addr; | |
1361 | bptoffset = memaddr - bp_addr; | |
1362 | bp_addr = memaddr; | |
1363 | } | |
1364 | ||
1365 | if (bp_addr + bp_size > memaddr + len) | |
1366 | { | |
1367 | /* Only copy the first part of the breakpoint. */ | |
1368 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1369 | } | |
1370 | ||
1371 | if (readbuf != NULL) | |
1372 | { | |
1373 | /* Verify that the readbuf buffer does not overlap with the | |
1374 | shadow_contents buffer. */ | |
1375 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1376 | || readbuf >= (target_info->shadow_contents | |
1377 | + target_info->shadow_len)); | |
1378 | ||
1379 | /* Update the read buffer with this inserted breakpoint's | |
1380 | shadow. */ | |
1381 | memcpy (readbuf + bp_addr - memaddr, | |
1382 | target_info->shadow_contents + bptoffset, bp_size); | |
1383 | } | |
1384 | else | |
1385 | { | |
1386 | const unsigned char *bp; | |
0d5ed153 MR |
1387 | CORE_ADDR addr = target_info->reqstd_address; |
1388 | int placed_size; | |
9d497a19 PA |
1389 | |
1390 | /* Update the shadow with what we want to write to memory. */ | |
1391 | memcpy (target_info->shadow_contents + bptoffset, | |
1392 | writebuf_org + bp_addr - memaddr, bp_size); | |
1393 | ||
1394 | /* Determine appropriate breakpoint contents and size for this | |
1395 | address. */ | |
0d5ed153 | 1396 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1397 | |
1398 | /* Update the final write buffer with this inserted | |
1399 | breakpoint's INSN. */ | |
1400 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1401 | } | |
1402 | } | |
1403 | ||
8defab1a | 1404 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1405 | by replacing any memory breakpoints with their shadowed contents. |
1406 | ||
35c63cd8 JB |
1407 | If READBUF is not NULL, this buffer must not overlap with any of |
1408 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1409 | a failed assertion internal error will be raised. | |
1410 | ||
876fa593 | 1411 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1412 | bl->address - bp_locations_placed_address_before_address_max |
1413 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1414 | The range we were requested to resolve shadows for is: |
1415 | memaddr ... memaddr + len | |
1416 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1417 | memaddr + len <= (bl->address |
f5336ca5 | 1418 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1419 | and: |
f5336ca5 | 1420 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1421 | |
8defab1a | 1422 | void |
f0ba3972 PA |
1423 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1424 | const gdb_byte *writebuf_org, | |
1425 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1426 | { |
4a64f543 MS |
1427 | /* Left boundary, right boundary and median element of our binary |
1428 | search. */ | |
876fa593 JK |
1429 | unsigned bc_l, bc_r, bc; |
1430 | ||
4a64f543 MS |
1431 | /* Find BC_L which is a leftmost element which may affect BUF |
1432 | content. It is safe to report lower value but a failure to | |
1433 | report higher one. */ | |
876fa593 JK |
1434 | |
1435 | bc_l = 0; | |
f5336ca5 | 1436 | bc_r = bp_locations_count; |
876fa593 JK |
1437 | while (bc_l + 1 < bc_r) |
1438 | { | |
35df4500 | 1439 | struct bp_location *bl; |
876fa593 JK |
1440 | |
1441 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1442 | bl = bp_locations[bc]; |
876fa593 | 1443 | |
4a64f543 MS |
1444 | /* Check first BL->ADDRESS will not overflow due to the added |
1445 | constant. Then advance the left boundary only if we are sure | |
1446 | the BC element can in no way affect the BUF content (MEMADDR | |
1447 | to MEMADDR + LEN range). | |
876fa593 | 1448 | |
f5336ca5 | 1449 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1450 | offset so that we cannot miss a breakpoint with its shadow |
1451 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1452 | |
f5336ca5 | 1453 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1454 | >= bl->address) |
f5336ca5 | 1455 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1456 | <= memaddr)) |
876fa593 JK |
1457 | bc_l = bc; |
1458 | else | |
1459 | bc_r = bc; | |
1460 | } | |
1461 | ||
128070bb PA |
1462 | /* Due to the binary search above, we need to make sure we pick the |
1463 | first location that's at BC_L's address. E.g., if there are | |
1464 | multiple locations at the same address, BC_L may end up pointing | |
1465 | at a duplicate location, and miss the "master"/"inserted" | |
1466 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1467 | B: | |
1468 | ||
1469 | L1@A, L2@A, L3@B, ... | |
1470 | ||
1471 | BC_L could end up pointing at location L2, while the "master" | |
1472 | location could be L1. Since the `loc->inserted' flag is only set | |
1473 | on "master" locations, we'd forget to restore the shadow of L1 | |
1474 | and L2. */ | |
1475 | while (bc_l > 0 | |
f5336ca5 | 1476 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1477 | bc_l--; |
1478 | ||
876fa593 JK |
1479 | /* Now do full processing of the found relevant range of elements. */ |
1480 | ||
f5336ca5 | 1481 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1482 | { |
f5336ca5 | 1483 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1484 | |
35df4500 TJB |
1485 | /* bp_location array has BL->OWNER always non-NULL. */ |
1486 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1487 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1488 | bl->owner->number); |
ffce0d52 | 1489 | |
e5dd4106 | 1490 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1491 | content. */ |
1492 | ||
f5336ca5 PA |
1493 | if (bl->address >= bp_locations_placed_address_before_address_max |
1494 | && memaddr + len <= (bl->address | |
1495 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1496 | break; |
1497 | ||
35df4500 | 1498 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1499 | continue; |
6c95b8df | 1500 | |
9d497a19 PA |
1501 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1502 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1503 | } | |
c906108c | 1504 | } |
9d497a19 | 1505 | |
c906108c | 1506 | \f |
c5aa993b | 1507 | |
b775012e LM |
1508 | /* Return true if BPT is either a software breakpoint or a hardware |
1509 | breakpoint. */ | |
1510 | ||
1511 | int | |
1512 | is_breakpoint (const struct breakpoint *bpt) | |
1513 | { | |
1514 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1515 | || bpt->type == bp_hardware_breakpoint |
1516 | || bpt->type == bp_dprintf); | |
b775012e LM |
1517 | } |
1518 | ||
60e1c644 PA |
1519 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1520 | ||
a5606eee | 1521 | static int |
d77f58be | 1522 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1523 | { |
1524 | return (bpt->type == bp_hardware_watchpoint | |
1525 | || bpt->type == bp_read_watchpoint | |
1526 | || bpt->type == bp_access_watchpoint); | |
1527 | } | |
7270d8f2 | 1528 | |
60e1c644 PA |
1529 | /* Return true if BPT is of any watchpoint kind, hardware or |
1530 | software. */ | |
1531 | ||
3a5c3e22 | 1532 | int |
d77f58be | 1533 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1534 | { |
1535 | return (is_hardware_watchpoint (bpt) | |
1536 | || bpt->type == bp_watchpoint); | |
1537 | } | |
1538 | ||
3a5c3e22 PA |
1539 | /* Returns true if the current thread and its running state are safe |
1540 | to evaluate or update watchpoint B. Watchpoints on local | |
1541 | expressions need to be evaluated in the context of the thread that | |
1542 | was current when the watchpoint was created, and, that thread needs | |
1543 | to be stopped to be able to select the correct frame context. | |
1544 | Watchpoints on global expressions can be evaluated on any thread, | |
1545 | and in any state. It is presently left to the target allowing | |
1546 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1547 | |
1548 | static int | |
3a5c3e22 | 1549 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1550 | { |
c1fc2657 | 1551 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1552 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1553 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1554 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1555 | } |
1556 | ||
d0fb5eae JK |
1557 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1558 | associated bp_watchpoint_scope breakpoint. */ | |
1559 | ||
1560 | static void | |
3a5c3e22 | 1561 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1562 | { |
c1fc2657 | 1563 | if (w->related_breakpoint != w) |
d0fb5eae | 1564 | { |
c1fc2657 SM |
1565 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1566 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1567 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1568 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1569 | w->related_breakpoint = w; | |
d0fb5eae | 1570 | } |
c1fc2657 | 1571 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1572 | } |
1573 | ||
bb9d5f81 PP |
1574 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1575 | watchpoint W. */ | |
1576 | ||
1577 | static struct value * | |
1578 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1579 | { | |
1580 | struct value *bit_val; | |
1581 | ||
1582 | if (val == NULL) | |
1583 | return NULL; | |
1584 | ||
1585 | bit_val = allocate_value (value_type (val)); | |
1586 | ||
1587 | unpack_value_bitfield (bit_val, | |
1588 | w->val_bitpos, | |
1589 | w->val_bitsize, | |
1590 | value_contents_for_printing (val), | |
1591 | value_offset (val), | |
1592 | val); | |
1593 | ||
1594 | return bit_val; | |
1595 | } | |
1596 | ||
c6d81124 PA |
1597 | /* Allocate a dummy location and add it to B, which must be a software |
1598 | watchpoint. This is required because even if a software watchpoint | |
1599 | is not watching any memory, bpstat_stop_status requires a location | |
1600 | to be able to report stops. */ | |
1601 | ||
1602 | static void | |
1603 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1604 | struct program_space *pspace) | |
1605 | { | |
1606 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1607 | ||
1608 | b->loc = allocate_bp_location (b); | |
1609 | b->loc->pspace = pspace; | |
1610 | b->loc->address = -1; | |
1611 | b->loc->length = -1; | |
1612 | } | |
1613 | ||
1614 | /* Returns true if B is a software watchpoint that is not watching any | |
1615 | memory (e.g., "watch $pc"). */ | |
1616 | ||
1617 | static int | |
1618 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1619 | { | |
1620 | return (b->type == bp_watchpoint | |
1621 | && b->loc != NULL | |
1622 | && b->loc->next == NULL | |
1623 | && b->loc->address == -1 | |
1624 | && b->loc->length == -1); | |
1625 | } | |
1626 | ||
567e1b4e JB |
1627 | /* Assuming that B is a watchpoint: |
1628 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1629 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1630 | - Evaluate the condition if there is one, and store the result |
1631 | in b->loc->cond. | |
a5606eee VP |
1632 | - Update the list of values that must be watched in B->loc. |
1633 | ||
4a64f543 MS |
1634 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1635 | nothing. If this is local watchpoint that is out of scope, delete | |
1636 | it. | |
1637 | ||
1638 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1639 | removed + inserted on each stop here. Normal breakpoints must | |
1640 | never be removed because they might be missed by a running thread | |
1641 | when debugging in non-stop mode. On the other hand, hardware | |
1642 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1643 | to each LWP since they are stored in each LWP's hardware debug | |
1644 | registers. Therefore, such LWP must be stopped first in order to | |
1645 | be able to modify its hardware watchpoints. | |
1646 | ||
1647 | Hardware watchpoints must be reset exactly once after being | |
1648 | presented to the user. It cannot be done sooner, because it would | |
1649 | reset the data used to present the watchpoint hit to the user. And | |
1650 | it must not be done later because it could display the same single | |
1651 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1652 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1653 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1654 | not user-visible - its hit is suppressed if the memory content has | |
1655 | not changed. | |
1656 | ||
1657 | The following constraints influence the location where we can reset | |
1658 | hardware watchpoints: | |
1659 | ||
1660 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1661 | called several times when GDB stops. | |
1662 | ||
1663 | [linux] | |
1664 | * Multiple hardware watchpoints can be hit at the same time, | |
1665 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1666 | hit at a time as the reason for stopping, and all the other hits | |
1667 | are presented later, one after the other, each time the user | |
1668 | requests the execution to be resumed. Execution is not resumed | |
1669 | for the threads still having pending hit event stored in | |
1670 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1671 | the inferior on the first stop the thread hit event is kept being | |
1672 | reported from its cached value by linux_nat_stopped_data_address | |
1673 | until the real thread resume happens after the watchpoint gets | |
1674 | presented and thus its LWP_INFO->STATUS gets reset. | |
1675 | ||
1676 | Therefore the hardware watchpoint hit can get safely reset on the | |
1677 | watchpoint removal from inferior. */ | |
a79d3c27 | 1678 | |
b40ce68a | 1679 | static void |
3a5c3e22 | 1680 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1681 | { |
a5606eee | 1682 | int within_current_scope; |
a5606eee | 1683 | struct frame_id saved_frame_id; |
66076460 | 1684 | int frame_saved; |
a5606eee | 1685 | |
f6bc2008 PA |
1686 | /* If this is a local watchpoint, we only want to check if the |
1687 | watchpoint frame is in scope if the current thread is the thread | |
1688 | that was used to create the watchpoint. */ | |
1689 | if (!watchpoint_in_thread_scope (b)) | |
1690 | return; | |
1691 | ||
c1fc2657 | 1692 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1693 | return; |
1694 | ||
66076460 | 1695 | frame_saved = 0; |
a5606eee VP |
1696 | |
1697 | /* Determine if the watchpoint is within scope. */ | |
1698 | if (b->exp_valid_block == NULL) | |
1699 | within_current_scope = 1; | |
1700 | else | |
1701 | { | |
b5db5dfc UW |
1702 | struct frame_info *fi = get_current_frame (); |
1703 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1704 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1705 | ||
c9cf6e20 MG |
1706 | /* If we're at a point where the stack has been destroyed |
1707 | (e.g. in a function epilogue), unwinding may not work | |
1708 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1709 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1710 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1711 | return; |
66076460 DJ |
1712 | |
1713 | /* Save the current frame's ID so we can restore it after | |
1714 | evaluating the watchpoint expression on its own frame. */ | |
1715 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1716 | took a frame parameter, so that we didn't have to change the | |
1717 | selected frame. */ | |
1718 | frame_saved = 1; | |
1719 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1720 | ||
a5606eee VP |
1721 | fi = frame_find_by_id (b->watchpoint_frame); |
1722 | within_current_scope = (fi != NULL); | |
1723 | if (within_current_scope) | |
1724 | select_frame (fi); | |
1725 | } | |
1726 | ||
b5db5dfc UW |
1727 | /* We don't free locations. They are stored in the bp_location array |
1728 | and update_global_location_list will eventually delete them and | |
1729 | remove breakpoints if needed. */ | |
c1fc2657 | 1730 | b->loc = NULL; |
b5db5dfc | 1731 | |
a5606eee VP |
1732 | if (within_current_scope && reparse) |
1733 | { | |
bbc13ae3 | 1734 | const char *s; |
d63d0675 | 1735 | |
4d01a485 | 1736 | b->exp.reset (); |
d63d0675 | 1737 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1738 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1739 | /* If the meaning of expression itself changed, the old value is |
1740 | no longer relevant. We don't want to report a watchpoint hit | |
1741 | to the user when the old value and the new value may actually | |
1742 | be completely different objects. */ | |
1743 | value_free (b->val); | |
fa4727a6 DJ |
1744 | b->val = NULL; |
1745 | b->val_valid = 0; | |
60e1c644 PA |
1746 | |
1747 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1748 | expression is stored in the breakpoint object, not in the | |
1749 | locations (re)created below. */ | |
c1fc2657 | 1750 | if (b->cond_string != NULL) |
60e1c644 | 1751 | { |
4d01a485 | 1752 | b->cond_exp.reset (); |
60e1c644 | 1753 | |
c1fc2657 | 1754 | s = b->cond_string; |
1bb9788d | 1755 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1756 | } |
a5606eee | 1757 | } |
a5606eee VP |
1758 | |
1759 | /* If we failed to parse the expression, for example because | |
1760 | it refers to a global variable in a not-yet-loaded shared library, | |
1761 | don't try to insert watchpoint. We don't automatically delete | |
1762 | such watchpoint, though, since failure to parse expression | |
1763 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1764 | if (!target_has_execution) |
2d134ed3 PA |
1765 | { |
1766 | /* Without execution, memory can't change. No use to try and | |
1767 | set watchpoint locations. The watchpoint will be reset when | |
1768 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1769 | if (!can_use_hw_watchpoints) |
1770 | { | |
c1fc2657 SM |
1771 | if (b->ops->works_in_software_mode (b)) |
1772 | b->type = bp_watchpoint; | |
e8369a73 | 1773 | else |
638aa5a1 AB |
1774 | error (_("Can't set read/access watchpoint when " |
1775 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1776 | } |
2d134ed3 PA |
1777 | } |
1778 | else if (within_current_scope && b->exp) | |
a5606eee | 1779 | { |
0cf6dd15 | 1780 | int pc = 0; |
fa4727a6 | 1781 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1782 | struct program_space *frame_pspace; |
a5606eee | 1783 | |
4d01a485 | 1784 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1785 | |
a5606eee VP |
1786 | /* Avoid setting b->val if it's already set. The meaning of |
1787 | b->val is 'the last value' user saw, and we should update | |
1788 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1789 | happens, the code that reports it updates b->val directly. |
1790 | We don't keep track of the memory value for masked | |
1791 | watchpoints. */ | |
c1fc2657 | 1792 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1793 | { |
bb9d5f81 PP |
1794 | if (b->val_bitsize != 0) |
1795 | { | |
1796 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1797 | if (v != NULL) | |
1798 | release_value (v); | |
1799 | } | |
fa4727a6 DJ |
1800 | b->val = v; |
1801 | b->val_valid = 1; | |
1802 | } | |
a5606eee | 1803 | |
2d134ed3 PA |
1804 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1805 | ||
a5606eee | 1806 | /* Look at each value on the value chain. */ |
9fa40276 | 1807 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1808 | { |
1809 | /* If it's a memory location, and GDB actually needed | |
1810 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1811 | must watch it. If the first value returned is |
1812 | still lazy, that means an error occurred reading it; | |
1813 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1814 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1815 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1816 | { |
1817 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1818 | |
a5606eee VP |
1819 | /* We only watch structs and arrays if user asked |
1820 | for it explicitly, never if they just happen to | |
1821 | appear in the middle of some value chain. */ | |
fa4727a6 | 1822 | if (v == result |
a5606eee VP |
1823 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1824 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1825 | { | |
1826 | CORE_ADDR addr; | |
f486487f | 1827 | enum target_hw_bp_type type; |
a5606eee | 1828 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1829 | int bitpos = 0, bitsize = 0; |
1830 | ||
1831 | if (value_bitsize (v) != 0) | |
1832 | { | |
1833 | /* Extract the bit parameters out from the bitfield | |
1834 | sub-expression. */ | |
1835 | bitpos = value_bitpos (v); | |
1836 | bitsize = value_bitsize (v); | |
1837 | } | |
1838 | else if (v == result && b->val_bitsize != 0) | |
1839 | { | |
1840 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1841 | lvalue whose bit parameters are saved in the fields | |
1842 | VAL_BITPOS and VAL_BITSIZE. */ | |
1843 | bitpos = b->val_bitpos; | |
1844 | bitsize = b->val_bitsize; | |
1845 | } | |
a5606eee | 1846 | |
42ae5230 | 1847 | addr = value_address (v); |
bb9d5f81 PP |
1848 | if (bitsize != 0) |
1849 | { | |
1850 | /* Skip the bytes that don't contain the bitfield. */ | |
1851 | addr += bitpos / 8; | |
1852 | } | |
1853 | ||
a5606eee | 1854 | type = hw_write; |
c1fc2657 | 1855 | if (b->type == bp_read_watchpoint) |
a5606eee | 1856 | type = hw_read; |
c1fc2657 | 1857 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1858 | type = hw_access; |
3a5c3e22 | 1859 | |
c1fc2657 SM |
1860 | loc = allocate_bp_location (b); |
1861 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1862 | ; |
1863 | *tmp = loc; | |
a6d9a66e | 1864 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1865 | |
1866 | loc->pspace = frame_pspace; | |
f17d9474 | 1867 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1868 | |
1869 | if (bitsize != 0) | |
1870 | { | |
1871 | /* Just cover the bytes that make up the bitfield. */ | |
1872 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1873 | } | |
1874 | else | |
1875 | loc->length = TYPE_LENGTH (value_type (v)); | |
1876 | ||
a5606eee VP |
1877 | loc->watchpoint_type = type; |
1878 | } | |
1879 | } | |
9fa40276 TJB |
1880 | } |
1881 | ||
1882 | /* Change the type of breakpoint between hardware assisted or | |
1883 | an ordinary watchpoint depending on the hardware support | |
1884 | and free hardware slots. REPARSE is set when the inferior | |
1885 | is started. */ | |
a9634178 | 1886 | if (reparse) |
9fa40276 | 1887 | { |
e09342b5 | 1888 | int reg_cnt; |
9fa40276 TJB |
1889 | enum bp_loc_type loc_type; |
1890 | struct bp_location *bl; | |
a5606eee | 1891 | |
a9634178 | 1892 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1893 | |
1894 | if (reg_cnt) | |
9fa40276 TJB |
1895 | { |
1896 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1897 | enum bptype type; |
9fa40276 | 1898 | |
a9634178 TJB |
1899 | /* Use an exact watchpoint when there's only one memory region to be |
1900 | watched, and only one debug register is needed to watch it. */ | |
1901 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1902 | ||
9fa40276 | 1903 | /* We need to determine how many resources are already |
e09342b5 TJB |
1904 | used for all other hardware watchpoints plus this one |
1905 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1906 | this watchpoint in as well. */ |
1907 | ||
1908 | /* If this is a software watchpoint, we try to turn it | |
1909 | to a hardware one -- count resources as if B was of | |
1910 | hardware watchpoint type. */ | |
c1fc2657 | 1911 | type = b->type; |
a1398e0c PA |
1912 | if (type == bp_watchpoint) |
1913 | type = bp_hardware_watchpoint; | |
1914 | ||
1915 | /* This watchpoint may or may not have been placed on | |
1916 | the list yet at this point (it won't be in the list | |
1917 | if we're trying to create it for the first time, | |
1918 | through watch_command), so always account for it | |
1919 | manually. */ | |
1920 | ||
1921 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1922 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1923 | |
1924 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1925 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1926 | |
1927 | target_resources_ok | |
1928 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1929 | if (target_resources_ok <= 0) |
a9634178 | 1930 | { |
c1fc2657 | 1931 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1932 | |
1933 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1934 | error (_("Target does not support this type of " |
1935 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1936 | else if (target_resources_ok < 0 && !sw_mode) |
1937 | error (_("There are not enough available hardware " | |
1938 | "resources for this watchpoint.")); | |
a1398e0c PA |
1939 | |
1940 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1941 | b->type = bp_watchpoint; |
a1398e0c PA |
1942 | } |
1943 | else | |
1944 | { | |
1945 | /* If this was a software watchpoint, we've just | |
1946 | found we have enough resources to turn it to a | |
1947 | hardware watchpoint. Otherwise, this is a | |
1948 | nop. */ | |
c1fc2657 | 1949 | b->type = type; |
a9634178 | 1950 | } |
9fa40276 | 1951 | } |
c1fc2657 | 1952 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1953 | { |
1954 | if (!can_use_hw_watchpoints) | |
1955 | error (_("Can't set read/access watchpoint when " | |
1956 | "hardware watchpoints are disabled.")); | |
1957 | else | |
1958 | error (_("Expression cannot be implemented with " | |
1959 | "read/access watchpoint.")); | |
1960 | } | |
9fa40276 | 1961 | else |
c1fc2657 | 1962 | b->type = bp_watchpoint; |
9fa40276 | 1963 | |
c1fc2657 | 1964 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1965 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1966 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1967 | bl->loc_type = loc_type; |
1968 | } | |
1969 | ||
1970 | for (v = val_chain; v; v = next) | |
1971 | { | |
a5606eee VP |
1972 | next = value_next (v); |
1973 | if (v != b->val) | |
1974 | value_free (v); | |
1975 | } | |
1976 | ||
c7437ca6 PA |
1977 | /* If a software watchpoint is not watching any memory, then the |
1978 | above left it without any location set up. But, | |
1979 | bpstat_stop_status requires a location to be able to report | |
1980 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1981 | if (b->type == bp_watchpoint && b->loc == NULL) |
1982 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1983 | } |
1984 | else if (!within_current_scope) | |
7270d8f2 | 1985 | { |
ac74f770 MS |
1986 | printf_filtered (_("\ |
1987 | Watchpoint %d deleted because the program has left the block\n\ | |
1988 | in which its expression is valid.\n"), | |
c1fc2657 | 1989 | b->number); |
d0fb5eae | 1990 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1991 | } |
a5606eee VP |
1992 | |
1993 | /* Restore the selected frame. */ | |
66076460 DJ |
1994 | if (frame_saved) |
1995 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1996 | } |
1997 | ||
a5606eee | 1998 | |
74960c60 | 1999 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2000 | inserted in the inferior. We don't differentiate the type of BL's owner |
2001 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2002 | breakpoint_ops is not defined, because in insert_bp_location, | |
2003 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2004 | static int |
35df4500 | 2005 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2006 | { |
35df4500 | 2007 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2008 | return 0; |
2009 | ||
35df4500 | 2010 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2011 | return 0; |
2012 | ||
35df4500 | 2013 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2014 | return 0; |
2015 | ||
f8eba3c6 TT |
2016 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2017 | return 0; | |
2018 | ||
56710373 PA |
2019 | /* This is set for example, when we're attached to the parent of a |
2020 | vfork, and have detached from the child. The child is running | |
2021 | free, and we expect it to do an exec or exit, at which point the | |
2022 | OS makes the parent schedulable again (and the target reports | |
2023 | that the vfork is done). Until the child is done with the shared | |
2024 | memory region, do not insert breakpoints in the parent, otherwise | |
2025 | the child could still trip on the parent's breakpoints. Since | |
2026 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2027 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2028 | return 0; |
2029 | ||
31e77af2 | 2030 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2031 | location, except if the breakpoint is a single-step breakpoint, |
2032 | and the breakpoint's thread is the thread which is stepping past | |
2033 | a breakpoint. */ | |
31e77af2 PA |
2034 | if ((bl->loc_type == bp_loc_software_breakpoint |
2035 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2036 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2037 | bl->address) |
2038 | /* The single-step breakpoint may be inserted at the location | |
2039 | we're trying to step if the instruction branches to itself. | |
2040 | However, the instruction won't be executed at all and it may | |
2041 | break the semantics of the instruction, for example, the | |
2042 | instruction is a conditional branch or updates some flags. | |
2043 | We can't fix it unless GDB is able to emulate the instruction | |
2044 | or switch to displaced stepping. */ | |
2045 | && !(bl->owner->type == bp_single_step | |
2046 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2047 | { |
2048 | if (debug_infrun) | |
2049 | { | |
2050 | fprintf_unfiltered (gdb_stdlog, | |
2051 | "infrun: skipping breakpoint: " | |
2052 | "stepping past insn at: %s\n", | |
2053 | paddress (bl->gdbarch, bl->address)); | |
2054 | } | |
2055 | return 0; | |
2056 | } | |
31e77af2 | 2057 | |
963f9c80 PA |
2058 | /* Don't insert watchpoints if we're trying to step past the |
2059 | instruction that triggered one. */ | |
2060 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2061 | && stepping_past_nonsteppable_watchpoint ()) | |
2062 | { | |
2063 | if (debug_infrun) | |
2064 | { | |
2065 | fprintf_unfiltered (gdb_stdlog, | |
2066 | "infrun: stepping past non-steppable watchpoint. " | |
2067 | "skipping watchpoint at %s:%d\n", | |
2068 | paddress (bl->gdbarch, bl->address), | |
2069 | bl->length); | |
2070 | } | |
2071 | return 0; | |
2072 | } | |
2073 | ||
74960c60 VP |
2074 | return 1; |
2075 | } | |
2076 | ||
934709f0 PW |
2077 | /* Same as should_be_inserted but does the check assuming |
2078 | that the location is not duplicated. */ | |
2079 | ||
2080 | static int | |
2081 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2082 | { | |
2083 | int result; | |
2084 | const int save_duplicate = bl->duplicate; | |
2085 | ||
2086 | bl->duplicate = 0; | |
2087 | result = should_be_inserted (bl); | |
2088 | bl->duplicate = save_duplicate; | |
2089 | return result; | |
2090 | } | |
2091 | ||
b775012e LM |
2092 | /* Parses a conditional described by an expression COND into an |
2093 | agent expression bytecode suitable for evaluation | |
2094 | by the bytecode interpreter. Return NULL if there was | |
2095 | any error during parsing. */ | |
2096 | ||
833177a4 | 2097 | static agent_expr_up |
b775012e LM |
2098 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2099 | { | |
833177a4 | 2100 | if (cond == NULL) |
b775012e LM |
2101 | return NULL; |
2102 | ||
833177a4 PA |
2103 | agent_expr_up aexpr; |
2104 | ||
b775012e LM |
2105 | /* We don't want to stop processing, so catch any errors |
2106 | that may show up. */ | |
492d29ea | 2107 | TRY |
b775012e | 2108 | { |
036e657b | 2109 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2110 | } |
2111 | ||
492d29ea | 2112 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2113 | { |
2114 | /* If we got here, it means the condition could not be parsed to a valid | |
2115 | bytecode expression and thus can't be evaluated on the target's side. | |
2116 | It's no use iterating through the conditions. */ | |
b775012e | 2117 | } |
492d29ea | 2118 | END_CATCH |
b775012e LM |
2119 | |
2120 | /* We have a valid agent expression. */ | |
2121 | return aexpr; | |
2122 | } | |
2123 | ||
2124 | /* Based on location BL, create a list of breakpoint conditions to be | |
2125 | passed on to the target. If we have duplicated locations with different | |
2126 | conditions, we will add such conditions to the list. The idea is that the | |
2127 | target will evaluate the list of conditions and will only notify GDB when | |
2128 | one of them is true. */ | |
2129 | ||
2130 | static void | |
2131 | build_target_condition_list (struct bp_location *bl) | |
2132 | { | |
2133 | struct bp_location **locp = NULL, **loc2p; | |
2134 | int null_condition_or_parse_error = 0; | |
2135 | int modified = bl->needs_update; | |
2136 | struct bp_location *loc; | |
2137 | ||
8b4f3082 | 2138 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2139 | bl->target_info.conditions.clear (); |
8b4f3082 | 2140 | |
b775012e LM |
2141 | /* This is only meaningful if the target is |
2142 | evaluating conditions and if the user has | |
2143 | opted for condition evaluation on the target's | |
2144 | side. */ | |
2145 | if (gdb_evaluates_breakpoint_condition_p () | |
2146 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2147 | return; | |
2148 | ||
2149 | /* Do a first pass to check for locations with no assigned | |
2150 | conditions or conditions that fail to parse to a valid agent expression | |
2151 | bytecode. If any of these happen, then it's no use to send conditions | |
2152 | to the target since this location will always trigger and generate a | |
2153 | response back to GDB. */ | |
2154 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2155 | { | |
2156 | loc = (*loc2p); | |
2157 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2158 | { | |
2159 | if (modified) | |
2160 | { | |
b775012e LM |
2161 | /* Re-parse the conditions since something changed. In that |
2162 | case we already freed the condition bytecodes (see | |
2163 | force_breakpoint_reinsertion). We just | |
2164 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2165 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2166 | loc->cond.get ()); | |
b775012e LM |
2167 | } |
2168 | ||
2169 | /* If we have a NULL bytecode expression, it means something | |
2170 | went wrong or we have a null condition expression. */ | |
2171 | if (!loc->cond_bytecode) | |
2172 | { | |
2173 | null_condition_or_parse_error = 1; | |
2174 | break; | |
2175 | } | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | /* If any of these happened, it means we will have to evaluate the conditions | |
2180 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2181 | for all the other duplicate locations, thus we free all of them here. | |
2182 | ||
2183 | This is so we have a finer control over which locations' conditions are | |
2184 | being evaluated by GDB or the remote stub. */ | |
2185 | if (null_condition_or_parse_error) | |
2186 | { | |
2187 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2188 | { | |
2189 | loc = (*loc2p); | |
2190 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2191 | { | |
2192 | /* Only go as far as the first NULL bytecode is | |
2193 | located. */ | |
2194 | if (!loc->cond_bytecode) | |
2195 | return; | |
2196 | ||
833177a4 | 2197 | loc->cond_bytecode.reset (); |
b775012e LM |
2198 | } |
2199 | } | |
2200 | } | |
2201 | ||
2202 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2203 | for this location's address. */ | |
2204 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2205 | { | |
2206 | loc = (*loc2p); | |
2207 | if (loc->cond | |
2208 | && is_breakpoint (loc->owner) | |
2209 | && loc->pspace->num == bl->pspace->num | |
2210 | && loc->owner->enable_state == bp_enabled | |
2211 | && loc->enabled) | |
3cde5c42 PA |
2212 | { |
2213 | /* Add the condition to the vector. This will be used later | |
2214 | to send the conditions to the target. */ | |
2215 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2216 | } | |
b775012e LM |
2217 | } |
2218 | ||
2219 | return; | |
2220 | } | |
2221 | ||
d3ce09f5 SS |
2222 | /* Parses a command described by string CMD into an agent expression |
2223 | bytecode suitable for evaluation by the bytecode interpreter. | |
2224 | Return NULL if there was any error during parsing. */ | |
2225 | ||
833177a4 | 2226 | static agent_expr_up |
d3ce09f5 SS |
2227 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2228 | { | |
bbc13ae3 KS |
2229 | const char *cmdrest; |
2230 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2231 | struct gdbarch *gdbarch = get_current_arch (); |
2232 | ||
833177a4 | 2233 | if (cmd == NULL) |
d3ce09f5 SS |
2234 | return NULL; |
2235 | ||
2236 | cmdrest = cmd; | |
2237 | ||
2238 | if (*cmdrest == ',') | |
2239 | ++cmdrest; | |
f1735a53 | 2240 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2241 | |
2242 | if (*cmdrest++ != '"') | |
2243 | error (_("No format string following the location")); | |
2244 | ||
2245 | format_start = cmdrest; | |
2246 | ||
8e481c3b | 2247 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2248 | |
2249 | format_end = cmdrest; | |
2250 | ||
2251 | if (*cmdrest++ != '"') | |
2252 | error (_("Bad format string, non-terminated '\"'.")); | |
2253 | ||
f1735a53 | 2254 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2255 | |
2256 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2257 | error (_("Invalid argument syntax")); | |
2258 | ||
2259 | if (*cmdrest == ',') | |
2260 | cmdrest++; | |
f1735a53 | 2261 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2262 | |
2263 | /* For each argument, make an expression. */ | |
2264 | ||
8e481c3b | 2265 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2266 | while (*cmdrest != '\0') |
2267 | { | |
bbc13ae3 | 2268 | const char *cmd1; |
d3ce09f5 SS |
2269 | |
2270 | cmd1 = cmdrest; | |
4d01a485 | 2271 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2272 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2273 | cmdrest = cmd1; |
2274 | if (*cmdrest == ',') | |
2275 | ++cmdrest; | |
2276 | } | |
2277 | ||
833177a4 PA |
2278 | agent_expr_up aexpr; |
2279 | ||
d3ce09f5 SS |
2280 | /* We don't want to stop processing, so catch any errors |
2281 | that may show up. */ | |
492d29ea | 2282 | TRY |
d3ce09f5 | 2283 | { |
036e657b JB |
2284 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2285 | format_start, format_end - format_start, | |
8e481c3b | 2286 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2287 | } |
492d29ea | 2288 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2289 | { |
2290 | /* If we got here, it means the command could not be parsed to a valid | |
2291 | bytecode expression and thus can't be evaluated on the target's side. | |
2292 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2293 | } |
492d29ea PA |
2294 | END_CATCH |
2295 | ||
d3ce09f5 SS |
2296 | /* We have a valid agent expression, return it. */ |
2297 | return aexpr; | |
2298 | } | |
2299 | ||
2300 | /* Based on location BL, create a list of breakpoint commands to be | |
2301 | passed on to the target. If we have duplicated locations with | |
2302 | different commands, we will add any such to the list. */ | |
2303 | ||
2304 | static void | |
2305 | build_target_command_list (struct bp_location *bl) | |
2306 | { | |
2307 | struct bp_location **locp = NULL, **loc2p; | |
2308 | int null_command_or_parse_error = 0; | |
2309 | int modified = bl->needs_update; | |
2310 | struct bp_location *loc; | |
2311 | ||
3cde5c42 PA |
2312 | /* Clear commands left over from a previous insert. */ |
2313 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2314 | |
41fac0cf | 2315 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2316 | return; |
2317 | ||
41fac0cf PA |
2318 | /* For now, limit to agent-style dprintf breakpoints. */ |
2319 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2320 | return; |
2321 | ||
41fac0cf PA |
2322 | /* For now, if we have any duplicate location that isn't a dprintf, |
2323 | don't install the target-side commands, as that would make the | |
2324 | breakpoint not be reported to the core, and we'd lose | |
2325 | control. */ | |
2326 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2327 | { | |
2328 | loc = (*loc2p); | |
2329 | if (is_breakpoint (loc->owner) | |
2330 | && loc->pspace->num == bl->pspace->num | |
2331 | && loc->owner->type != bp_dprintf) | |
2332 | return; | |
2333 | } | |
2334 | ||
d3ce09f5 SS |
2335 | /* Do a first pass to check for locations with no assigned |
2336 | conditions or conditions that fail to parse to a valid agent expression | |
2337 | bytecode. If any of these happen, then it's no use to send conditions | |
2338 | to the target since this location will always trigger and generate a | |
2339 | response back to GDB. */ | |
2340 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2341 | { | |
2342 | loc = (*loc2p); | |
2343 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2344 | { | |
2345 | if (modified) | |
2346 | { | |
d3ce09f5 SS |
2347 | /* Re-parse the commands since something changed. In that |
2348 | case we already freed the command bytecodes (see | |
2349 | force_breakpoint_reinsertion). We just | |
2350 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2351 | loc->cmd_bytecode |
2352 | = parse_cmd_to_aexpr (bl->address, | |
2353 | loc->owner->extra_string); | |
d3ce09f5 SS |
2354 | } |
2355 | ||
2356 | /* If we have a NULL bytecode expression, it means something | |
2357 | went wrong or we have a null command expression. */ | |
2358 | if (!loc->cmd_bytecode) | |
2359 | { | |
2360 | null_command_or_parse_error = 1; | |
2361 | break; | |
2362 | } | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | /* If anything failed, then we're not doing target-side commands, | |
2367 | and so clean up. */ | |
2368 | if (null_command_or_parse_error) | |
2369 | { | |
2370 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2371 | { | |
2372 | loc = (*loc2p); | |
2373 | if (is_breakpoint (loc->owner) | |
2374 | && loc->pspace->num == bl->pspace->num) | |
2375 | { | |
2376 | /* Only go as far as the first NULL bytecode is | |
2377 | located. */ | |
40fb6c5e | 2378 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2379 | return; |
2380 | ||
833177a4 | 2381 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2382 | } |
2383 | } | |
2384 | } | |
2385 | ||
2386 | /* No NULL commands or failed bytecode generation. Build a command list | |
2387 | for this location's address. */ | |
2388 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2389 | { | |
2390 | loc = (*loc2p); | |
2391 | if (loc->owner->extra_string | |
2392 | && is_breakpoint (loc->owner) | |
2393 | && loc->pspace->num == bl->pspace->num | |
2394 | && loc->owner->enable_state == bp_enabled | |
2395 | && loc->enabled) | |
3cde5c42 PA |
2396 | { |
2397 | /* Add the command to the vector. This will be used later | |
2398 | to send the commands to the target. */ | |
2399 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2400 | } | |
d3ce09f5 SS |
2401 | } |
2402 | ||
2403 | bl->target_info.persist = 0; | |
2404 | /* Maybe flag this location as persistent. */ | |
2405 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2406 | bl->target_info.persist = 1; | |
2407 | } | |
2408 | ||
833b7ab5 YQ |
2409 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2410 | of breakpoint according to ADDR except single-step breakpoint. | |
2411 | Get the kind of single-step breakpoint according to the current | |
2412 | registers state. */ | |
cd6c3b4f YQ |
2413 | |
2414 | static int | |
2415 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2416 | { | |
833b7ab5 YQ |
2417 | if (bl->owner->type == bp_single_step) |
2418 | { | |
2419 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2420 | struct regcache *regcache; | |
2421 | ||
2422 | regcache = get_thread_regcache (thr->ptid); | |
2423 | ||
2424 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2425 | regcache, addr); | |
2426 | } | |
2427 | else | |
2428 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2429 | } |
2430 | ||
35df4500 TJB |
2431 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2432 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2433 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2434 | Returns 0 for success, 1 if the bp_location type is not supported or |
2435 | -1 for failure. | |
879bfdc2 | 2436 | |
4a64f543 MS |
2437 | NOTE drow/2003-09-09: This routine could be broken down to an |
2438 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2439 | static int |
35df4500 | 2440 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2441 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2442 | int *disabled_breaks, |
dd61ec5c MW |
2443 | int *hw_breakpoint_error, |
2444 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2445 | { |
688fca4f | 2446 | gdb_exception bp_excpt = exception_none; |
879bfdc2 | 2447 | |
b775012e | 2448 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2449 | return 0; |
2450 | ||
35c63cd8 JB |
2451 | /* Note we don't initialize bl->target_info, as that wipes out |
2452 | the breakpoint location's shadow_contents if the breakpoint | |
2453 | is still inserted at that location. This in turn breaks | |
2454 | target_read_memory which depends on these buffers when | |
2455 | a memory read is requested at the breakpoint location: | |
2456 | Once the target_info has been wiped, we fail to see that | |
2457 | we have a breakpoint inserted at that address and thus | |
2458 | read the breakpoint instead of returning the data saved in | |
2459 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2460 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2461 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2462 | bl->target_info.length = bl->length; |
8181d85f | 2463 | |
b775012e LM |
2464 | /* When working with target-side conditions, we must pass all the conditions |
2465 | for the same breakpoint address down to the target since GDB will not | |
2466 | insert those locations. With a list of breakpoint conditions, the target | |
2467 | can decide when to stop and notify GDB. */ | |
2468 | ||
2469 | if (is_breakpoint (bl->owner)) | |
2470 | { | |
2471 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2472 | build_target_command_list (bl); |
2473 | /* Reset the modification marker. */ | |
b775012e LM |
2474 | bl->needs_update = 0; |
2475 | } | |
2476 | ||
35df4500 TJB |
2477 | if (bl->loc_type == bp_loc_software_breakpoint |
2478 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2479 | { |
35df4500 | 2480 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2481 | { |
2482 | /* If the explicitly specified breakpoint type | |
2483 | is not hardware breakpoint, check the memory map to see | |
2484 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2485 | |
765dc015 VP |
2486 | Two important cases are: |
2487 | - location type is not hardware breakpoint, memory | |
2488 | is readonly. We change the type of the location to | |
2489 | hardware breakpoint. | |
4a64f543 MS |
2490 | - location type is hardware breakpoint, memory is |
2491 | read-write. This means we've previously made the | |
2492 | location hardware one, but then the memory map changed, | |
2493 | so we undo. | |
765dc015 | 2494 | |
4a64f543 MS |
2495 | When breakpoints are removed, remove_breakpoints will use |
2496 | location types we've just set here, the only possible | |
2497 | problem is that memory map has changed during running | |
2498 | program, but it's not going to work anyway with current | |
2499 | gdb. */ | |
765dc015 | 2500 | struct mem_region *mr |
0d5ed153 | 2501 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2502 | |
2503 | if (mr) | |
2504 | { | |
2505 | if (automatic_hardware_breakpoints) | |
2506 | { | |
765dc015 VP |
2507 | enum bp_loc_type new_type; |
2508 | ||
2509 | if (mr->attrib.mode != MEM_RW) | |
2510 | new_type = bp_loc_hardware_breakpoint; | |
2511 | else | |
2512 | new_type = bp_loc_software_breakpoint; | |
2513 | ||
35df4500 | 2514 | if (new_type != bl->loc_type) |
765dc015 VP |
2515 | { |
2516 | static int said = 0; | |
cc59ec59 | 2517 | |
35df4500 | 2518 | bl->loc_type = new_type; |
765dc015 VP |
2519 | if (!said) |
2520 | { | |
3e43a32a MS |
2521 | fprintf_filtered (gdb_stdout, |
2522 | _("Note: automatically using " | |
2523 | "hardware breakpoints for " | |
2524 | "read-only addresses.\n")); | |
765dc015 VP |
2525 | said = 1; |
2526 | } | |
2527 | } | |
2528 | } | |
35df4500 | 2529 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2530 | && mr->attrib.mode != MEM_RW) |
2531 | { | |
2532 | fprintf_unfiltered (tmp_error_stream, | |
2533 | _("Cannot insert breakpoint %d.\n" | |
2534 | "Cannot set software breakpoint " | |
2535 | "at read-only address %s\n"), | |
2536 | bl->owner->number, | |
2537 | paddress (bl->gdbarch, bl->address)); | |
2538 | return 1; | |
2539 | } | |
765dc015 VP |
2540 | } |
2541 | } | |
2542 | ||
879bfdc2 DJ |
2543 | /* First check to see if we have to handle an overlay. */ |
2544 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2545 | || bl->section == NULL |
2546 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2547 | { |
2548 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2549 | TRY |
dd61ec5c | 2550 | { |
0000e5cc PA |
2551 | int val; |
2552 | ||
dd61ec5c | 2553 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2554 | if (val) |
688fca4f | 2555 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2556 | } |
492d29ea | 2557 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2558 | { |
688fca4f | 2559 | bp_excpt = e; |
dd61ec5c | 2560 | } |
492d29ea | 2561 | END_CATCH |
879bfdc2 DJ |
2562 | } |
2563 | else | |
2564 | { | |
4a64f543 | 2565 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2566 | Shall we set a breakpoint at the LMA? */ |
2567 | if (!overlay_events_enabled) | |
2568 | { | |
2569 | /* Yes -- overlay event support is not active, | |
2570 | so we must try to set a breakpoint at the LMA. | |
2571 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2572 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2573 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2574 | bl->owner->number); |
879bfdc2 DJ |
2575 | else |
2576 | { | |
35df4500 TJB |
2577 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2578 | bl->section); | |
879bfdc2 | 2579 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2580 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2581 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2582 | |
2583 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2584 | TRY |
0000e5cc PA |
2585 | { |
2586 | int val; | |
2587 | ||
579c6ad9 | 2588 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2589 | = breakpoint_kind (bl, &addr); |
2590 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2591 | val = target_insert_breakpoint (bl->gdbarch, |
2592 | &bl->overlay_target_info); | |
2593 | if (val) | |
688fca4f PA |
2594 | bp_excpt |
2595 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2596 | } |
492d29ea | 2597 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc | 2598 | { |
688fca4f | 2599 | bp_excpt = e; |
0000e5cc | 2600 | } |
492d29ea | 2601 | END_CATCH |
0000e5cc | 2602 | |
688fca4f | 2603 | if (bp_excpt.reason != 0) |
99361f52 | 2604 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2605 | "Overlay breakpoint %d " |
2606 | "failed: in ROM?\n", | |
35df4500 | 2607 | bl->owner->number); |
879bfdc2 DJ |
2608 | } |
2609 | } | |
2610 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2611 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2612 | { |
2613 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2614 | TRY |
dd61ec5c | 2615 | { |
0000e5cc PA |
2616 | int val; |
2617 | ||
dd61ec5c | 2618 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2619 | if (val) |
688fca4f | 2620 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2621 | } |
492d29ea | 2622 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2623 | { |
688fca4f | 2624 | bp_excpt = e; |
dd61ec5c | 2625 | } |
492d29ea | 2626 | END_CATCH |
879bfdc2 DJ |
2627 | } |
2628 | else | |
2629 | { | |
2630 | /* No. This breakpoint will not be inserted. | |
2631 | No error, but do not mark the bp as 'inserted'. */ | |
2632 | return 0; | |
2633 | } | |
2634 | } | |
2635 | ||
688fca4f | 2636 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2637 | { |
2638 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2639 | |
2640 | /* In some cases, we might not be able to insert a | |
2641 | breakpoint in a shared library that has already been | |
2642 | removed, but we have not yet processed the shlib unload | |
2643 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2644 | breakpoint insertion themselves can't tell why the |
2645 | breakpoint insertion failed (e.g., the remote target | |
2646 | doesn't define error codes), so we must treat generic | |
2647 | errors as memory errors. */ | |
688fca4f PA |
2648 | if (bp_excpt.reason == RETURN_ERROR |
2649 | && (bp_excpt.error == GENERIC_ERROR | |
2650 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2651 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2652 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2653 | || shared_objfile_contains_address_p (bl->pspace, |
2654 | bl->address))) | |
879bfdc2 | 2655 | { |
4a64f543 | 2656 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2657 | bl->shlib_disabled = 1; |
8d3788bd | 2658 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2659 | if (!*disabled_breaks) |
2660 | { | |
2661 | fprintf_unfiltered (tmp_error_stream, | |
2662 | "Cannot insert breakpoint %d.\n", | |
2663 | bl->owner->number); | |
2664 | fprintf_unfiltered (tmp_error_stream, | |
2665 | "Temporarily disabling shared " | |
2666 | "library breakpoints:\n"); | |
2667 | } | |
2668 | *disabled_breaks = 1; | |
879bfdc2 | 2669 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2670 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2671 | return 0; |
879bfdc2 DJ |
2672 | } |
2673 | else | |
879bfdc2 | 2674 | { |
35df4500 | 2675 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2676 | { |
0000e5cc | 2677 | *hw_breakpoint_error = 1; |
688fca4f | 2678 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2679 | fprintf_unfiltered (tmp_error_stream, |
2680 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2681 | bl->owner->number, |
2682 | bp_excpt.message ? ":" : ".\n"); | |
2683 | if (bp_excpt.message != NULL) | |
2684 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
2685 | bp_excpt.message); | |
879bfdc2 DJ |
2686 | } |
2687 | else | |
2688 | { | |
688fca4f | 2689 | if (bp_excpt.message == NULL) |
0000e5cc | 2690 | { |
1ccbe998 | 2691 | std::string message |
0000e5cc PA |
2692 | = memory_error_message (TARGET_XFER_E_IO, |
2693 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2694 | |
2695 | fprintf_unfiltered (tmp_error_stream, | |
2696 | "Cannot insert breakpoint %d.\n" | |
2697 | "%s\n", | |
1ccbe998 | 2698 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2699 | } |
2700 | else | |
2701 | { | |
2702 | fprintf_unfiltered (tmp_error_stream, | |
2703 | "Cannot insert breakpoint %d: %s\n", | |
2704 | bl->owner->number, | |
688fca4f | 2705 | bp_excpt.message); |
0000e5cc | 2706 | } |
879bfdc2 | 2707 | } |
0000e5cc | 2708 | return 1; |
879bfdc2 DJ |
2709 | |
2710 | } | |
2711 | } | |
2712 | else | |
35df4500 | 2713 | bl->inserted = 1; |
879bfdc2 | 2714 | |
0000e5cc | 2715 | return 0; |
879bfdc2 DJ |
2716 | } |
2717 | ||
35df4500 | 2718 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2719 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2720 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2721 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2722 | { |
0000e5cc PA |
2723 | int val; |
2724 | ||
77b06cd7 TJB |
2725 | gdb_assert (bl->owner->ops != NULL |
2726 | && bl->owner->ops->insert_location != NULL); | |
2727 | ||
2728 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2729 | |
2730 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2731 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2732 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2733 | { |
2734 | struct bp_location *loc, **loc_temp; | |
2735 | ||
2736 | /* But don't try to insert it, if there's already another | |
2737 | hw_access location that would be considered a duplicate | |
2738 | of this one. */ | |
2739 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2740 | if (loc != bl |
85d721b8 | 2741 | && loc->watchpoint_type == hw_access |
35df4500 | 2742 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2743 | { |
35df4500 TJB |
2744 | bl->duplicate = 1; |
2745 | bl->inserted = 1; | |
2746 | bl->target_info = loc->target_info; | |
2747 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2748 | val = 0; |
2749 | break; | |
2750 | } | |
2751 | ||
2752 | if (val == 1) | |
2753 | { | |
77b06cd7 TJB |
2754 | bl->watchpoint_type = hw_access; |
2755 | val = bl->owner->ops->insert_location (bl); | |
2756 | ||
2757 | if (val) | |
2758 | /* Back to the original value. */ | |
2759 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2760 | } |
2761 | } | |
2762 | ||
35df4500 | 2763 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2764 | } |
2765 | ||
35df4500 | 2766 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2767 | { |
0000e5cc PA |
2768 | int val; |
2769 | ||
77b06cd7 TJB |
2770 | gdb_assert (bl->owner->ops != NULL |
2771 | && bl->owner->ops->insert_location != NULL); | |
2772 | ||
2773 | val = bl->owner->ops->insert_location (bl); | |
2774 | if (val) | |
2775 | { | |
2776 | bl->owner->enable_state = bp_disabled; | |
2777 | ||
2778 | if (val == 1) | |
2779 | warning (_("\ | |
2780 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2781 | of catchpoint."), bl->owner->number); | |
2782 | else | |
2783 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2784 | } | |
2785 | ||
2786 | bl->inserted = (val == 0); | |
1640b821 DJ |
2787 | |
2788 | /* We've already printed an error message if there was a problem | |
2789 | inserting this catchpoint, and we've disabled the catchpoint, | |
2790 | so just return success. */ | |
2791 | return 0; | |
879bfdc2 DJ |
2792 | } |
2793 | ||
2794 | return 0; | |
2795 | } | |
2796 | ||
6c95b8df PA |
2797 | /* This function is called when program space PSPACE is about to be |
2798 | deleted. It takes care of updating breakpoints to not reference | |
2799 | PSPACE anymore. */ | |
2800 | ||
2801 | void | |
2802 | breakpoint_program_space_exit (struct program_space *pspace) | |
2803 | { | |
2804 | struct breakpoint *b, *b_temp; | |
876fa593 | 2805 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2806 | |
2807 | /* Remove any breakpoint that was set through this program space. */ | |
2808 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2809 | { | |
2810 | if (b->pspace == pspace) | |
2811 | delete_breakpoint (b); | |
2812 | } | |
2813 | ||
2814 | /* Breakpoints set through other program spaces could have locations | |
2815 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2816 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2817 | { |
2818 | struct bp_location *tmp; | |
2819 | ||
2820 | if (loc->pspace == pspace) | |
2821 | { | |
2bdf28a0 | 2822 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2823 | if (loc->owner->loc == loc) |
2824 | loc->owner->loc = loc->next; | |
2825 | else | |
2826 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2827 | if (tmp->next == loc) | |
2828 | { | |
2829 | tmp->next = loc->next; | |
2830 | break; | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | /* Now update the global location list to permanently delete the | |
2836 | removed locations above. */ | |
44702360 | 2837 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2838 | } |
2839 | ||
74960c60 VP |
2840 | /* Make sure all breakpoints are inserted in inferior. |
2841 | Throws exception on any error. | |
2842 | A breakpoint that is already inserted won't be inserted | |
2843 | again, so calling this function twice is safe. */ | |
2844 | void | |
2845 | insert_breakpoints (void) | |
2846 | { | |
2847 | struct breakpoint *bpt; | |
2848 | ||
2849 | ALL_BREAKPOINTS (bpt) | |
2850 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2851 | { |
2852 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2853 | ||
2854 | update_watchpoint (w, 0 /* don't reparse. */); | |
2855 | } | |
74960c60 | 2856 | |
04086b45 PA |
2857 | /* Updating watchpoints creates new locations, so update the global |
2858 | location list. Explicitly tell ugll to insert locations and | |
2859 | ignore breakpoints_always_inserted_mode. */ | |
2860 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2861 | } |
2862 | ||
20388dd6 YQ |
2863 | /* Invoke CALLBACK for each of bp_location. */ |
2864 | ||
2865 | void | |
2866 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2867 | { | |
2868 | struct bp_location *loc, **loc_tmp; | |
2869 | ||
2870 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2871 | { | |
2872 | callback (loc, NULL); | |
2873 | } | |
2874 | } | |
2875 | ||
b775012e LM |
2876 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2877 | target. It is the case with deleting and disabling of breakpoints when using | |
2878 | always-inserted mode. */ | |
2879 | ||
2880 | static void | |
2881 | update_inserted_breakpoint_locations (void) | |
2882 | { | |
2883 | struct bp_location *bl, **blp_tmp; | |
2884 | int error_flag = 0; | |
2885 | int val = 0; | |
2886 | int disabled_breaks = 0; | |
2887 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2888 | int hw_bp_details_reported = 0; |
b775012e | 2889 | |
d7e74731 | 2890 | string_file tmp_error_stream; |
b775012e LM |
2891 | |
2892 | /* Explicitly mark the warning -- this will only be printed if | |
2893 | there was an error. */ | |
d7e74731 | 2894 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2895 | |
5ed8105e | 2896 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2897 | |
2898 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2899 | { | |
2900 | /* We only want to update software breakpoints and hardware | |
2901 | breakpoints. */ | |
2902 | if (!is_breakpoint (bl->owner)) | |
2903 | continue; | |
2904 | ||
2905 | /* We only want to update locations that are already inserted | |
2906 | and need updating. This is to avoid unwanted insertion during | |
2907 | deletion of breakpoints. */ | |
2908 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2909 | continue; | |
2910 | ||
2911 | switch_to_program_space_and_thread (bl->pspace); | |
2912 | ||
2913 | /* For targets that support global breakpoints, there's no need | |
2914 | to select an inferior to insert breakpoint to. In fact, even | |
2915 | if we aren't attached to any process yet, we should still | |
2916 | insert breakpoints. */ | |
f5656ead | 2917 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2918 | && ptid_equal (inferior_ptid, null_ptid)) |
2919 | continue; | |
2920 | ||
d7e74731 | 2921 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2922 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2923 | if (val) |
2924 | error_flag = val; | |
2925 | } | |
2926 | ||
2927 | if (error_flag) | |
2928 | { | |
223ffa71 | 2929 | target_terminal::ours_for_output (); |
b775012e LM |
2930 | error_stream (tmp_error_stream); |
2931 | } | |
b775012e LM |
2932 | } |
2933 | ||
c30eee59 | 2934 | /* Used when starting or continuing the program. */ |
c906108c | 2935 | |
74960c60 VP |
2936 | static void |
2937 | insert_breakpoint_locations (void) | |
c906108c | 2938 | { |
a5606eee | 2939 | struct breakpoint *bpt; |
35df4500 | 2940 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2941 | int error_flag = 0; |
c906108c | 2942 | int val = 0; |
3fbb6ffa | 2943 | int disabled_breaks = 0; |
81d0cc19 | 2944 | int hw_breakpoint_error = 0; |
dd61ec5c | 2945 | int hw_bp_error_explained_already = 0; |
c906108c | 2946 | |
d7e74731 PA |
2947 | string_file tmp_error_stream; |
2948 | ||
81d0cc19 GS |
2949 | /* Explicitly mark the warning -- this will only be printed if |
2950 | there was an error. */ | |
d7e74731 | 2951 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2952 | |
5ed8105e | 2953 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2954 | |
35df4500 | 2955 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2956 | { |
b775012e | 2957 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2958 | continue; |
2959 | ||
4a64f543 MS |
2960 | /* There is no point inserting thread-specific breakpoints if |
2961 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2962 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2963 | if (bl->owner->thread != -1 |
5d5658a1 | 2964 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2965 | continue; |
2966 | ||
35df4500 | 2967 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2968 | |
2969 | /* For targets that support global breakpoints, there's no need | |
2970 | to select an inferior to insert breakpoint to. In fact, even | |
2971 | if we aren't attached to any process yet, we should still | |
2972 | insert breakpoints. */ | |
f5656ead | 2973 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2974 | && ptid_equal (inferior_ptid, null_ptid)) |
2975 | continue; | |
2976 | ||
d7e74731 | 2977 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2978 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2979 | if (val) |
eacd795a | 2980 | error_flag = val; |
879bfdc2 | 2981 | } |
c906108c | 2982 | |
4a64f543 MS |
2983 | /* If we failed to insert all locations of a watchpoint, remove |
2984 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2985 | ALL_BREAKPOINTS (bpt) |
2986 | { | |
2987 | int some_failed = 0; | |
2988 | struct bp_location *loc; | |
2989 | ||
2990 | if (!is_hardware_watchpoint (bpt)) | |
2991 | continue; | |
2992 | ||
d6b74ac4 | 2993 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2994 | continue; |
74960c60 VP |
2995 | |
2996 | if (bpt->disposition == disp_del_at_next_stop) | |
2997 | continue; | |
a5606eee VP |
2998 | |
2999 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3000 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3001 | { |
3002 | some_failed = 1; | |
3003 | break; | |
3004 | } | |
3005 | if (some_failed) | |
3006 | { | |
3007 | for (loc = bpt->loc; loc; loc = loc->next) | |
3008 | if (loc->inserted) | |
834c0d03 | 3009 | remove_breakpoint (loc); |
a5606eee VP |
3010 | |
3011 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3012 | tmp_error_stream.printf ("Could not insert " |
3013 | "hardware watchpoint %d.\n", | |
3014 | bpt->number); | |
eacd795a | 3015 | error_flag = -1; |
a5606eee VP |
3016 | } |
3017 | } | |
3018 | ||
eacd795a | 3019 | if (error_flag) |
81d0cc19 GS |
3020 | { |
3021 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3022 | message about possibly exhausted resources. */ | |
dd61ec5c | 3023 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3024 | { |
d7e74731 | 3025 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3026 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3027 | } |
223ffa71 | 3028 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3029 | error_stream (tmp_error_stream); |
3030 | } | |
c906108c SS |
3031 | } |
3032 | ||
c30eee59 TJB |
3033 | /* Used when the program stops. |
3034 | Returns zero if successful, or non-zero if there was a problem | |
3035 | removing a breakpoint location. */ | |
3036 | ||
c906108c | 3037 | int |
fba45db2 | 3038 | remove_breakpoints (void) |
c906108c | 3039 | { |
35df4500 | 3040 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3041 | int val = 0; |
c906108c | 3042 | |
35df4500 | 3043 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3044 | { |
1e4d1764 | 3045 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3046 | val |= remove_breakpoint (bl); |
c5aa993b | 3047 | } |
3a1bae8e | 3048 | return val; |
c906108c SS |
3049 | } |
3050 | ||
49fa26b0 PA |
3051 | /* When a thread exits, remove breakpoints that are related to |
3052 | that thread. */ | |
3053 | ||
3054 | static void | |
3055 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3056 | { | |
3057 | struct breakpoint *b, *b_tmp; | |
3058 | ||
3059 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3060 | { | |
5d5658a1 | 3061 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3062 | { |
3063 | b->disposition = disp_del_at_next_stop; | |
3064 | ||
3065 | printf_filtered (_("\ | |
43792cf0 PA |
3066 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3067 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3068 | |
3069 | /* Hide it from the user. */ | |
3070 | b->number = 0; | |
3071 | } | |
3072 | } | |
3073 | } | |
3074 | ||
6c95b8df PA |
3075 | /* Remove breakpoints of process PID. */ |
3076 | ||
3077 | int | |
3078 | remove_breakpoints_pid (int pid) | |
3079 | { | |
35df4500 | 3080 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3081 | int val; |
3082 | struct inferior *inf = find_inferior_pid (pid); | |
3083 | ||
35df4500 | 3084 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3085 | { |
35df4500 | 3086 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3087 | continue; |
3088 | ||
fc126975 | 3089 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3090 | { |
834c0d03 | 3091 | val = remove_breakpoint (bl); |
6c95b8df PA |
3092 | if (val != 0) |
3093 | return val; | |
3094 | } | |
3095 | } | |
3096 | return 0; | |
3097 | } | |
3098 | ||
e58b0e63 PA |
3099 | static int internal_breakpoint_number = -1; |
3100 | ||
84f4c1fe PM |
3101 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3102 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3103 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3104 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3105 | breakpoint_count and that value incremented. Internal breakpoints |
3106 | do not set the internal var bpnum. */ | |
3107 | static void | |
3108 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3109 | { | |
3110 | if (internal) | |
3111 | b->number = internal_breakpoint_number--; | |
3112 | else | |
3113 | { | |
3114 | set_breakpoint_count (breakpoint_count + 1); | |
3115 | b->number = breakpoint_count; | |
3116 | } | |
3117 | } | |
3118 | ||
e62c965a | 3119 | static struct breakpoint * |
a6d9a66e | 3120 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3121 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3122 | const struct breakpoint_ops *ops) |
e62c965a | 3123 | { |
51abb421 | 3124 | symtab_and_line sal; |
e62c965a PP |
3125 | sal.pc = address; |
3126 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3127 | sal.pspace = current_program_space; |
e62c965a | 3128 | |
51abb421 | 3129 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3130 | b->number = internal_breakpoint_number--; |
3131 | b->disposition = disp_donttouch; | |
3132 | ||
3133 | return b; | |
3134 | } | |
3135 | ||
17450429 PP |
3136 | static const char *const longjmp_names[] = |
3137 | { | |
3138 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3139 | }; | |
3140 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3141 | ||
3142 | /* Per-objfile data private to breakpoint.c. */ | |
3143 | struct breakpoint_objfile_data | |
3144 | { | |
3145 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3146 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3147 | |
3148 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3149 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3150 | |
28106bc2 | 3151 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3152 | int longjmp_searched = 0; |
28106bc2 | 3153 | |
45461e0d SM |
3154 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3155 | references. */ | |
3156 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3157 | |
17450429 | 3158 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3159 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3160 | |
3161 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3162 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3163 | |
3164 | /* True if we have looked for exception probes. */ | |
43dce439 | 3165 | int exception_searched = 0; |
28106bc2 | 3166 | |
45461e0d SM |
3167 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3168 | references. */ | |
3169 | std::vector<probe *> exception_probes; | |
17450429 PP |
3170 | }; |
3171 | ||
3172 | static const struct objfile_data *breakpoint_objfile_key; | |
3173 | ||
3174 | /* Minimal symbol not found sentinel. */ | |
3175 | static struct minimal_symbol msym_not_found; | |
3176 | ||
3177 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3178 | ||
3179 | static int | |
3180 | msym_not_found_p (const struct minimal_symbol *msym) | |
3181 | { | |
3182 | return msym == &msym_not_found; | |
3183 | } | |
3184 | ||
3185 | /* Return per-objfile data needed by breakpoint.c. | |
3186 | Allocate the data if necessary. */ | |
3187 | ||
3188 | static struct breakpoint_objfile_data * | |
3189 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3190 | { | |
3191 | struct breakpoint_objfile_data *bp_objfile_data; | |
3192 | ||
9a3c8263 SM |
3193 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3194 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3195 | if (bp_objfile_data == NULL) |
3196 | { | |
43dce439 | 3197 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3198 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3199 | } | |
3200 | return bp_objfile_data; | |
3201 | } | |
3202 | ||
28106bc2 | 3203 | static void |
43dce439 | 3204 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3205 | { |
9a3c8263 SM |
3206 | struct breakpoint_objfile_data *bp_objfile_data |
3207 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3208 | |
43dce439 | 3209 | delete bp_objfile_data; |
28106bc2 SDJ |
3210 | } |
3211 | ||
e62c965a | 3212 | static void |
af02033e | 3213 | create_overlay_event_breakpoint (void) |
e62c965a | 3214 | { |
69de3c6a | 3215 | struct objfile *objfile; |
af02033e | 3216 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3217 | |
69de3c6a PP |
3218 | ALL_OBJFILES (objfile) |
3219 | { | |
3220 | struct breakpoint *b; | |
17450429 PP |
3221 | struct breakpoint_objfile_data *bp_objfile_data; |
3222 | CORE_ADDR addr; | |
67994074 | 3223 | struct explicit_location explicit_loc; |
69de3c6a | 3224 | |
17450429 PP |
3225 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3226 | ||
3b7344d5 | 3227 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3228 | continue; |
3229 | ||
3b7344d5 | 3230 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3231 | { |
3b7344d5 | 3232 | struct bound_minimal_symbol m; |
17450429 PP |
3233 | |
3234 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3235 | if (m.minsym == NULL) |
17450429 PP |
3236 | { |
3237 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3238 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3239 | continue; |
3240 | } | |
3241 | bp_objfile_data->overlay_msym = m; | |
3242 | } | |
e62c965a | 3243 | |
77e371c0 | 3244 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3245 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3246 | bp_overlay_event, |
3247 | &internal_breakpoint_ops); | |
67994074 KS |
3248 | initialize_explicit_location (&explicit_loc); |
3249 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3250 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3251 | |
69de3c6a PP |
3252 | if (overlay_debugging == ovly_auto) |
3253 | { | |
3254 | b->enable_state = bp_enabled; | |
3255 | overlay_events_enabled = 1; | |
3256 | } | |
3257 | else | |
3258 | { | |
3259 | b->enable_state = bp_disabled; | |
3260 | overlay_events_enabled = 0; | |
3261 | } | |
e62c965a | 3262 | } |
e62c965a PP |
3263 | } |
3264 | ||
0fd8e87f | 3265 | static void |
af02033e | 3266 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3267 | { |
6c95b8df | 3268 | struct program_space *pspace; |
6c95b8df | 3269 | |
5ed8105e | 3270 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3271 | |
6c95b8df | 3272 | ALL_PSPACES (pspace) |
af02033e PP |
3273 | { |
3274 | struct objfile *objfile; | |
3275 | ||
3276 | set_current_program_space (pspace); | |
3277 | ||
3278 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3279 | { |
af02033e PP |
3280 | int i; |
3281 | struct gdbarch *gdbarch; | |
17450429 | 3282 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3283 | |
af02033e | 3284 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3285 | |
17450429 PP |
3286 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3287 | ||
28106bc2 SDJ |
3288 | if (!bp_objfile_data->longjmp_searched) |
3289 | { | |
45461e0d SM |
3290 | std::vector<probe *> ret |
3291 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3292 | |
45461e0d | 3293 | if (!ret.empty ()) |
25f9533e SDJ |
3294 | { |
3295 | /* We are only interested in checking one element. */ | |
45461e0d | 3296 | probe *p = ret[0]; |
25f9533e | 3297 | |
935676c9 | 3298 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3299 | { |
3300 | /* We cannot use the probe interface here, because it does | |
3301 | not know how to evaluate arguments. */ | |
45461e0d | 3302 | ret.clear (); |
25f9533e SDJ |
3303 | } |
3304 | } | |
3305 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3306 | bp_objfile_data->longjmp_searched = 1; |
3307 | } | |
3308 | ||
45461e0d | 3309 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3310 | { |
28106bc2 SDJ |
3311 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
3312 | ||
45461e0d | 3313 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3314 | { |
3315 | struct breakpoint *b; | |
3316 | ||
729662a5 | 3317 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3318 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3319 | bp_longjmp_master, |
3320 | &internal_breakpoint_ops); | |
d28cd78a | 3321 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3322 | b->enable_state = bp_disabled; |
3323 | } | |
3324 | ||
3325 | continue; | |
3326 | } | |
3327 | ||
0569175e TSD |
3328 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3329 | continue; | |
3330 | ||
17450429 | 3331 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3332 | { |
3333 | struct breakpoint *b; | |
af02033e | 3334 | const char *func_name; |
17450429 | 3335 | CORE_ADDR addr; |
67994074 | 3336 | struct explicit_location explicit_loc; |
6c95b8df | 3337 | |
3b7344d5 | 3338 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3339 | continue; |
0fd8e87f | 3340 | |
17450429 | 3341 | func_name = longjmp_names[i]; |
3b7344d5 | 3342 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3343 | { |
3b7344d5 | 3344 | struct bound_minimal_symbol m; |
17450429 PP |
3345 | |
3346 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3347 | if (m.minsym == NULL) |
17450429 PP |
3348 | { |
3349 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3350 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3351 | continue; |
3352 | } | |
3353 | bp_objfile_data->longjmp_msym[i] = m; | |
3354 | } | |
3355 | ||
77e371c0 | 3356 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3357 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3358 | &internal_breakpoint_ops); | |
67994074 KS |
3359 | initialize_explicit_location (&explicit_loc); |
3360 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3361 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3362 | b->enable_state = bp_disabled; |
3363 | } | |
0fd8e87f | 3364 | } |
af02033e | 3365 | } |
0fd8e87f UW |
3366 | } |
3367 | ||
af02033e | 3368 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3369 | static void |
af02033e | 3370 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3371 | { |
3372 | struct program_space *pspace; | |
af02033e | 3373 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3374 | |
5ed8105e | 3375 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3376 | |
3377 | ALL_PSPACES (pspace) | |
17450429 PP |
3378 | { |
3379 | struct objfile *objfile; | |
3380 | CORE_ADDR addr; | |
3381 | ||
3382 | set_current_program_space (pspace); | |
3383 | ||
aa7d318d TT |
3384 | ALL_OBJFILES (objfile) |
3385 | { | |
3386 | struct breakpoint *b; | |
17450429 | 3387 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3388 | struct explicit_location explicit_loc; |
aa7d318d | 3389 | |
17450429 | 3390 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3391 | |
3b7344d5 | 3392 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3393 | continue; |
3394 | ||
3b7344d5 | 3395 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3396 | { |
3b7344d5 | 3397 | struct bound_minimal_symbol m; |
17450429 PP |
3398 | |
3399 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3400 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3401 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3402 | { |
3403 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3404 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3405 | continue; |
3406 | } | |
3407 | bp_objfile_data->terminate_msym = m; | |
3408 | } | |
aa7d318d | 3409 | |
77e371c0 | 3410 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3411 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3412 | bp_std_terminate_master, |
3413 | &internal_breakpoint_ops); | |
67994074 KS |
3414 | initialize_explicit_location (&explicit_loc); |
3415 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3416 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3417 | b->enable_state = bp_disabled; |
3418 | } | |
17450429 | 3419 | } |
aa7d318d TT |
3420 | } |
3421 | ||
186c406b TT |
3422 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3423 | ||
70221824 | 3424 | static void |
186c406b TT |
3425 | create_exception_master_breakpoint (void) |
3426 | { | |
3427 | struct objfile *objfile; | |
17450429 | 3428 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3429 | |
3430 | ALL_OBJFILES (objfile) | |
3431 | { | |
17450429 PP |
3432 | struct breakpoint *b; |
3433 | struct gdbarch *gdbarch; | |
3434 | struct breakpoint_objfile_data *bp_objfile_data; | |
3435 | CORE_ADDR addr; | |
67994074 | 3436 | struct explicit_location explicit_loc; |
17450429 PP |
3437 | |
3438 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3439 | ||
28106bc2 SDJ |
3440 | /* We prefer the SystemTap probe point if it exists. */ |
3441 | if (!bp_objfile_data->exception_searched) | |
3442 | { | |
45461e0d SM |
3443 | std::vector<probe *> ret |
3444 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3445 | |
45461e0d | 3446 | if (!ret.empty ()) |
25f9533e SDJ |
3447 | { |
3448 | /* We are only interested in checking one element. */ | |
45461e0d | 3449 | probe *p = ret[0]; |
25f9533e | 3450 | |
935676c9 | 3451 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3452 | { |
3453 | /* We cannot use the probe interface here, because it does | |
3454 | not know how to evaluate arguments. */ | |
45461e0d | 3455 | ret.clear (); |
25f9533e SDJ |
3456 | } |
3457 | } | |
3458 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3459 | bp_objfile_data->exception_searched = 1; |
3460 | } | |
3461 | ||
45461e0d | 3462 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 SDJ |
3463 | { |
3464 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3465 | |
3466 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3467 | { |
3468 | struct breakpoint *b; | |
3469 | ||
729662a5 | 3470 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3471 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3472 | bp_exception_master, |
3473 | &internal_breakpoint_ops); | |
d28cd78a | 3474 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3475 | b->enable_state = bp_disabled; |
3476 | } | |
3477 | ||
3478 | continue; | |
3479 | } | |
3480 | ||
3481 | /* Otherwise, try the hook function. */ | |
3482 | ||
3b7344d5 | 3483 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3484 | continue; |
3485 | ||
3486 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3487 | |
3b7344d5 | 3488 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3489 | { |
3b7344d5 | 3490 | struct bound_minimal_symbol debug_hook; |
186c406b | 3491 | |
17450429 | 3492 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3493 | if (debug_hook.minsym == NULL) |
17450429 | 3494 | { |
3b7344d5 | 3495 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3496 | continue; |
3497 | } | |
3498 | ||
3499 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3500 | } |
17450429 | 3501 | |
77e371c0 | 3502 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3503 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3504 | ¤t_target); | |
06edf0c0 PA |
3505 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3506 | &internal_breakpoint_ops); | |
67994074 KS |
3507 | initialize_explicit_location (&explicit_loc); |
3508 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3509 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3510 | b->enable_state = bp_disabled; |
186c406b | 3511 | } |
186c406b TT |
3512 | } |
3513 | ||
9ef9e6a6 KS |
3514 | /* Does B have a location spec? */ |
3515 | ||
3516 | static int | |
3517 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3518 | { | |
d28cd78a | 3519 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3520 | } |
3521 | ||
c906108c | 3522 | void |
fba45db2 | 3523 | update_breakpoints_after_exec (void) |
c906108c | 3524 | { |
35df4500 | 3525 | struct breakpoint *b, *b_tmp; |
876fa593 | 3526 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3527 | |
25b22b0a PA |
3528 | /* We're about to delete breakpoints from GDB's lists. If the |
3529 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3530 | writing the breakpoints' "shadow contents" back into memory. The | |
3531 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3532 | do that. Instead, the target is responsible from marking | |
3533 | breakpoints out as soon as it detects an exec. We don't do that | |
3534 | here instead, because there may be other attempts to delete | |
3535 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3536 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3537 | if (bploc->pspace == current_program_space) |
3538 | gdb_assert (!bploc->inserted); | |
c906108c | 3539 | |
35df4500 | 3540 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3541 | { |
6c95b8df PA |
3542 | if (b->pspace != current_program_space) |
3543 | continue; | |
3544 | ||
4a64f543 | 3545 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3546 | if (b->type == bp_shlib_event) |
3547 | { | |
3548 | delete_breakpoint (b); | |
3549 | continue; | |
3550 | } | |
c906108c | 3551 | |
4a64f543 | 3552 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3553 | if (b->type == bp_jit_event) |
3554 | { | |
3555 | delete_breakpoint (b); | |
3556 | continue; | |
3557 | } | |
3558 | ||
1900040c | 3559 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3560 | as must overlay event and longjmp master breakpoints. */ |
3561 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3562 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3563 | || b->type == bp_exception_master) | |
c4093a6a JM |
3564 | { |
3565 | delete_breakpoint (b); | |
3566 | continue; | |
3567 | } | |
3568 | ||
4a64f543 | 3569 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3570 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3571 | { |
3572 | delete_breakpoint (b); | |
3573 | continue; | |
3574 | } | |
3575 | ||
7c16b83e PA |
3576 | /* Just like single-step breakpoints. */ |
3577 | if (b->type == bp_single_step) | |
3578 | { | |
3579 | delete_breakpoint (b); | |
3580 | continue; | |
3581 | } | |
3582 | ||
611c83ae PA |
3583 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3584 | after an exec. */ | |
186c406b | 3585 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3586 | || b->type == bp_longjmp_call_dummy |
186c406b | 3587 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3588 | { |
3589 | delete_breakpoint (b); | |
3590 | continue; | |
3591 | } | |
3592 | ||
ce78b96d JB |
3593 | if (b->type == bp_catchpoint) |
3594 | { | |
3595 | /* For now, none of the bp_catchpoint breakpoints need to | |
3596 | do anything at this point. In the future, if some of | |
3597 | the catchpoints need to something, we will need to add | |
3598 | a new method, and call this method from here. */ | |
3599 | continue; | |
3600 | } | |
3601 | ||
c5aa993b JM |
3602 | /* bp_finish is a special case. The only way we ought to be able |
3603 | to see one of these when an exec() has happened, is if the user | |
3604 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3605 | carries them to the call-site of the current callee, by setting | |
3606 | a temporary bp there and resuming. But in this case, the finish | |
3607 | will carry them entirely through the vfork & exec. | |
3608 | ||
3609 | We don't want to allow a bp_finish to remain inserted now. But | |
3610 | we can't safely delete it, 'cause finish_command has a handle to | |
3611 | the bp on a bpstat, and will later want to delete it. There's a | |
3612 | chance (and I've seen it happen) that if we delete the bp_finish | |
3613 | here, that its storage will get reused by the time finish_command | |
3614 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3615 | We really must allow finish_command to delete a bp_finish. | |
3616 | ||
e5dd4106 | 3617 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3618 | it's safe to delete something others may have handles to?" |
3619 | problem, what we'll do here is just uninsert the bp_finish, and | |
3620 | let finish_command delete it. | |
3621 | ||
3622 | (We know the bp_finish is "doomed" in the sense that it's | |
3623 | momentary, and will be deleted as soon as finish_command sees | |
3624 | the inferior stopped. So it doesn't matter that the bp's | |
3625 | address is probably bogus in the new a.out, unlike e.g., the | |
3626 | solib breakpoints.) */ | |
c5aa993b | 3627 | |
c5aa993b JM |
3628 | if (b->type == bp_finish) |
3629 | { | |
3630 | continue; | |
3631 | } | |
3632 | ||
3633 | /* Without a symbolic address, we have little hope of the | |
3634 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3635 | a.out. */ |
9ef9e6a6 | 3636 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3637 | { |
3638 | delete_breakpoint (b); | |
3639 | continue; | |
3640 | } | |
c5aa993b | 3641 | } |
c906108c SS |
3642 | } |
3643 | ||
3644 | int | |
d80ee84f | 3645 | detach_breakpoints (ptid_t ptid) |
c906108c | 3646 | { |
35df4500 | 3647 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3648 | int val = 0; |
2989a365 | 3649 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3650 | struct inferior *inf = current_inferior (); |
c5aa993b | 3651 | |
dfd4cc63 | 3652 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3653 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3654 | |
6c95b8df | 3655 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3656 | inferior_ptid = ptid; |
35df4500 | 3657 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3658 | { |
35df4500 | 3659 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3660 | continue; |
3661 | ||
bd9673a4 PW |
3662 | /* This function must physically remove breakpoints locations |
3663 | from the specified ptid, without modifying the breakpoint | |
3664 | package's state. Locations of type bp_loc_other are only | |
3665 | maintained at GDB side. So, there is no need to remove | |
3666 | these bp_loc_other locations. Moreover, removing these | |
3667 | would modify the breakpoint package's state. */ | |
3668 | if (bl->loc_type == bp_loc_other) | |
3669 | continue; | |
3670 | ||
35df4500 | 3671 | if (bl->inserted) |
b2b6a7da | 3672 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3673 | } |
d03285ec | 3674 | |
3a1bae8e | 3675 | return val; |
c906108c SS |
3676 | } |
3677 | ||
35df4500 | 3678 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3679 | Note that this is used to detach breakpoints from a child fork. |
3680 | When we get here, the child isn't in the inferior list, and neither | |
3681 | do we have objects to represent its address space --- we should | |
35df4500 | 3682 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3683 | |
c906108c | 3684 | static int |
b2b6a7da | 3685 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3686 | { |
3687 | int val; | |
c5aa993b | 3688 | |
35df4500 TJB |
3689 | /* BL is never in moribund_locations by our callers. */ |
3690 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3691 | |
74960c60 VP |
3692 | /* The type of none suggests that owner is actually deleted. |
3693 | This should not ever happen. */ | |
35df4500 | 3694 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3695 | |
35df4500 TJB |
3696 | if (bl->loc_type == bp_loc_software_breakpoint |
3697 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3698 | { |
c02f5703 MS |
3699 | /* "Normal" instruction breakpoint: either the standard |
3700 | trap-instruction bp (bp_breakpoint), or a | |
3701 | bp_hardware_breakpoint. */ | |
3702 | ||
3703 | /* First check to see if we have to handle an overlay. */ | |
3704 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3705 | || bl->section == NULL |
3706 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3707 | { |
3708 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3709 | |
3710 | /* If we're trying to uninsert a memory breakpoint that we | |
3711 | know is set in a dynamic object that is marked | |
3712 | shlib_disabled, then either the dynamic object was | |
3713 | removed with "remove-symbol-file" or with | |
3714 | "nosharedlibrary". In the former case, we don't know | |
3715 | whether another dynamic object might have loaded over the | |
3716 | breakpoint's address -- the user might well let us know | |
3717 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3718 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3719 | list of dynamically loaded objects). If we have the |
3720 | breakpoint's shadow memory, that is, this is a software | |
3721 | breakpoint managed by GDB, check whether the breakpoint | |
3722 | is still inserted in memory, to avoid overwriting wrong | |
3723 | code with stale saved shadow contents. Note that HW | |
3724 | breakpoints don't have shadow memory, as they're | |
3725 | implemented using a mechanism that is not dependent on | |
3726 | being able to modify the target's memory, and as such | |
3727 | they should always be removed. */ | |
3728 | if (bl->shlib_disabled | |
3729 | && bl->target_info.shadow_len != 0 | |
3730 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3731 | val = 0; | |
3732 | else | |
73971819 | 3733 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3734 | } |
c906108c SS |
3735 | else |
3736 | { | |
4a64f543 | 3737 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3738 | Did we set a breakpoint at the LMA? */ |
3739 | if (!overlay_events_enabled) | |
3740 | { | |
3741 | /* Yes -- overlay event support is not active, so we | |
3742 | should have set a breakpoint at the LMA. Remove it. | |
3743 | */ | |
c02f5703 MS |
3744 | /* Ignore any failures: if the LMA is in ROM, we will |
3745 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3746 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3747 | target_remove_hw_breakpoint (bl->gdbarch, | |
3748 | &bl->overlay_target_info); | |
c02f5703 | 3749 | else |
35df4500 | 3750 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3751 | &bl->overlay_target_info, |
3752 | reason); | |
c02f5703 MS |
3753 | } |
3754 | /* Did we set a breakpoint at the VMA? | |
3755 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3756 | if (bl->inserted) |
c906108c | 3757 | { |
c02f5703 MS |
3758 | /* Yes -- remove it. Previously we did not bother to |
3759 | remove the breakpoint if the section had been | |
3760 | unmapped, but let's not rely on that being safe. We | |
3761 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3762 | |
3763 | /* However, we should remove *software* breakpoints only | |
3764 | if the section is still mapped, or else we overwrite | |
3765 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3766 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3767 | || section_is_mapped (bl->section)) | |
73971819 | 3768 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3769 | else |
3770 | val = 0; | |
c906108c | 3771 | } |
c02f5703 MS |
3772 | else |
3773 | { | |
3774 | /* No -- not inserted, so no need to remove. No error. */ | |
3775 | val = 0; | |
3776 | } | |
c906108c | 3777 | } |
879d1e6b | 3778 | |
08351840 PA |
3779 | /* In some cases, we might not be able to remove a breakpoint in |
3780 | a shared library that has already been removed, but we have | |
3781 | not yet processed the shlib unload event. Similarly for an | |
3782 | unloaded add-symbol-file object - the user might not yet have | |
3783 | had the chance to remove-symbol-file it. shlib_disabled will | |
3784 | be set if the library/object has already been removed, but | |
3785 | the breakpoint hasn't been uninserted yet, e.g., after | |
3786 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3787 | always-inserted mode. */ | |
076855f9 | 3788 | if (val |
08351840 PA |
3789 | && (bl->loc_type == bp_loc_software_breakpoint |
3790 | && (bl->shlib_disabled | |
3791 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3792 | || shared_objfile_contains_address_p (bl->pspace, |
3793 | bl->address)))) | |
879d1e6b UW |
3794 | val = 0; |
3795 | ||
c906108c SS |
3796 | if (val) |
3797 | return val; | |
b2b6a7da | 3798 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3799 | } |
35df4500 | 3800 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3801 | { |
77b06cd7 TJB |
3802 | gdb_assert (bl->owner->ops != NULL |
3803 | && bl->owner->ops->remove_location != NULL); | |
3804 | ||
b2b6a7da | 3805 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3806 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3807 | |
c906108c | 3808 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3809 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3810 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3811 | bl->owner->number); |
c906108c | 3812 | } |
35df4500 TJB |
3813 | else if (bl->owner->type == bp_catchpoint |
3814 | && breakpoint_enabled (bl->owner) | |
3815 | && !bl->duplicate) | |
ce78b96d | 3816 | { |
77b06cd7 TJB |
3817 | gdb_assert (bl->owner->ops != NULL |
3818 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3819 | |
73971819 | 3820 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3821 | if (val) |
3822 | return val; | |
77b06cd7 | 3823 | |
b2b6a7da | 3824 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3825 | } |
c906108c SS |
3826 | |
3827 | return 0; | |
3828 | } | |
3829 | ||
6c95b8df | 3830 | static int |
834c0d03 | 3831 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3832 | { |
35df4500 TJB |
3833 | /* BL is never in moribund_locations by our callers. */ |
3834 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3835 | |
6c95b8df PA |
3836 | /* The type of none suggests that owner is actually deleted. |
3837 | This should not ever happen. */ | |
35df4500 | 3838 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3839 | |
5ed8105e | 3840 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3841 | |
35df4500 | 3842 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3843 | |
5ed8105e | 3844 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3845 | } |
3846 | ||
c906108c SS |
3847 | /* Clear the "inserted" flag in all breakpoints. */ |
3848 | ||
25b22b0a | 3849 | void |
fba45db2 | 3850 | mark_breakpoints_out (void) |
c906108c | 3851 | { |
35df4500 | 3852 | struct bp_location *bl, **blp_tmp; |
c906108c | 3853 | |
35df4500 | 3854 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3855 | if (bl->pspace == current_program_space) |
35df4500 | 3856 | bl->inserted = 0; |
c906108c SS |
3857 | } |
3858 | ||
53a5351d JM |
3859 | /* Clear the "inserted" flag in all breakpoints and delete any |
3860 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3861 | |
3862 | Plus other such housekeeping that has to be done for breakpoints | |
3863 | between runs. | |
3864 | ||
53a5351d JM |
3865 | Note: this function gets called at the end of a run (by |
3866 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3867 | init_wait_for_inferior). */ |
c906108c SS |
3868 | |
3869 | ||
3870 | ||
3871 | void | |
fba45db2 | 3872 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3873 | { |
35df4500 | 3874 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3875 | struct bp_location *bl; |
1c5cfe86 | 3876 | int ix; |
6c95b8df | 3877 | struct program_space *pspace = current_program_space; |
c906108c | 3878 | |
50c71eaf PA |
3879 | /* If breakpoint locations are shared across processes, then there's |
3880 | nothing to do. */ | |
f5656ead | 3881 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3882 | return; |
3883 | ||
1a853c52 | 3884 | mark_breakpoints_out (); |
075f6582 | 3885 | |
35df4500 | 3886 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3887 | { |
6c95b8df PA |
3888 | if (b->loc && b->loc->pspace != pspace) |
3889 | continue; | |
3890 | ||
c5aa993b JM |
3891 | switch (b->type) |
3892 | { | |
3893 | case bp_call_dummy: | |
e2e4d78b | 3894 | case bp_longjmp_call_dummy: |
c906108c | 3895 | |
c5aa993b | 3896 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3897 | cause problems when the inferior is rerun, so we better get |
3898 | rid of it. */ | |
3899 | ||
3900 | case bp_watchpoint_scope: | |
3901 | ||
3902 | /* Also get rid of scope breakpoints. */ | |
3903 | ||
3904 | case bp_shlib_event: | |
3905 | ||
3906 | /* Also remove solib event breakpoints. Their addresses may | |
3907 | have changed since the last time we ran the program. | |
3908 | Actually we may now be debugging against different target; | |
3909 | and so the solib backend that installed this breakpoint may | |
3910 | not be used in by the target. E.g., | |
3911 | ||
3912 | (gdb) file prog-linux | |
3913 | (gdb) run # native linux target | |
3914 | ... | |
3915 | (gdb) kill | |
3916 | (gdb) file prog-win.exe | |
3917 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3918 | */ | |
c906108c | 3919 | |
f59f708a PA |
3920 | case bp_step_resume: |
3921 | ||
3922 | /* Also remove step-resume breakpoints. */ | |
3923 | ||
7c16b83e PA |
3924 | case bp_single_step: |
3925 | ||
3926 | /* Also remove single-step breakpoints. */ | |
3927 | ||
c5aa993b JM |
3928 | delete_breakpoint (b); |
3929 | break; | |
c906108c | 3930 | |
c5aa993b JM |
3931 | case bp_watchpoint: |
3932 | case bp_hardware_watchpoint: | |
3933 | case bp_read_watchpoint: | |
3934 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3935 | { |
3936 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3937 | |
3a5c3e22 PA |
3938 | /* Likewise for watchpoints on local expressions. */ |
3939 | if (w->exp_valid_block != NULL) | |
3940 | delete_breakpoint (b); | |
63000888 | 3941 | else |
3a5c3e22 | 3942 | { |
63000888 PA |
3943 | /* Get rid of existing locations, which are no longer |
3944 | valid. New ones will be created in | |
3945 | update_watchpoint, when the inferior is restarted. | |
3946 | The next update_global_location_list call will | |
3947 | garbage collect them. */ | |
3948 | b->loc = NULL; | |
3949 | ||
3950 | if (context == inf_starting) | |
3951 | { | |
3952 | /* Reset val field to force reread of starting value in | |
3953 | insert_breakpoints. */ | |
3954 | if (w->val) | |
3955 | value_free (w->val); | |
3956 | w->val = NULL; | |
3957 | w->val_valid = 0; | |
3958 | } | |
3959 | } | |
3a5c3e22 | 3960 | } |
c5aa993b JM |
3961 | break; |
3962 | default: | |
c5aa993b JM |
3963 | break; |
3964 | } | |
3965 | } | |
1c5cfe86 PA |
3966 | |
3967 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3968 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3969 | decref_bp_location (&bl); | |
1c5cfe86 | 3970 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3971 | } |
3972 | ||
6c95b8df PA |
3973 | /* These functions concern about actual breakpoints inserted in the |
3974 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3975 | we need to hop over the bkpt --- so we check for address space | |
3976 | match, not program space. */ | |
3977 | ||
c2c6d25f JM |
3978 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3979 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3980 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3981 | permanent breakpoint. | |
3982 | - When continuing from a location with an ordinary breakpoint, we | |
3983 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3984 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3985 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3986 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3987 | |
c2c6d25f | 3988 | enum breakpoint_here |
accd0bcd | 3989 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3990 | { |
35df4500 | 3991 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3992 | int any_breakpoint_here = 0; |
c906108c | 3993 | |
35df4500 | 3994 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3995 | { |
35df4500 TJB |
3996 | if (bl->loc_type != bp_loc_software_breakpoint |
3997 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3998 | continue; |
3999 | ||
f1310107 | 4000 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4001 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4002 | || bl->permanent) |
f1310107 | 4003 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4004 | { |
4005 | if (overlay_debugging | |
35df4500 TJB |
4006 | && section_is_overlay (bl->section) |
4007 | && !section_is_mapped (bl->section)) | |
075f6582 | 4008 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4009 | else if (bl->permanent) |
075f6582 DJ |
4010 | return permanent_breakpoint_here; |
4011 | else | |
4012 | any_breakpoint_here = 1; | |
4013 | } | |
4014 | } | |
c906108c | 4015 | |
f486487f | 4016 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4017 | } |
4018 | ||
d35ae833 PA |
4019 | /* See breakpoint.h. */ |
4020 | ||
4021 | int | |
accd0bcd | 4022 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4023 | CORE_ADDR addr, ULONGEST len) |
4024 | { | |
4025 | struct bp_location *bl, **blp_tmp; | |
4026 | ||
4027 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4028 | { | |
4029 | if (bl->loc_type != bp_loc_software_breakpoint | |
4030 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4031 | continue; | |
4032 | ||
4033 | if ((breakpoint_enabled (bl->owner) | |
4034 | || bl->permanent) | |
4035 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4036 | addr, len)) | |
4037 | { | |
4038 | if (overlay_debugging | |
4039 | && section_is_overlay (bl->section) | |
4040 | && !section_is_mapped (bl->section)) | |
4041 | { | |
4042 | /* Unmapped overlay -- can't be a match. */ | |
4043 | continue; | |
4044 | } | |
4045 | ||
4046 | return 1; | |
4047 | } | |
4048 | } | |
4049 | ||
4050 | return 0; | |
4051 | } | |
4052 | ||
1c5cfe86 PA |
4053 | /* Return true if there's a moribund breakpoint at PC. */ |
4054 | ||
4055 | int | |
accd0bcd | 4056 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4057 | { |
4058 | struct bp_location *loc; | |
4059 | int ix; | |
4060 | ||
4061 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4062 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4063 | return 1; |
4064 | ||
4065 | return 0; | |
4066 | } | |
c2c6d25f | 4067 | |
f7ce857f PA |
4068 | /* Returns non-zero iff BL is inserted at PC, in address space |
4069 | ASPACE. */ | |
4070 | ||
4071 | static int | |
4072 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4073 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4074 | { |
4075 | if (bl->inserted | |
4076 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4077 | aspace, pc)) | |
4078 | { | |
4079 | if (overlay_debugging | |
4080 | && section_is_overlay (bl->section) | |
4081 | && !section_is_mapped (bl->section)) | |
4082 | return 0; /* unmapped overlay -- can't be a match */ | |
4083 | else | |
4084 | return 1; | |
4085 | } | |
4086 | return 0; | |
4087 | } | |
4088 | ||
a1fd2fa5 | 4089 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4090 | |
4091 | int | |
accd0bcd | 4092 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4093 | { |
f7ce857f | 4094 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4095 | |
f7ce857f | 4096 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4097 | { |
f7ce857f PA |
4098 | struct bp_location *bl = *blp; |
4099 | ||
35df4500 TJB |
4100 | if (bl->loc_type != bp_loc_software_breakpoint |
4101 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4102 | continue; |
4103 | ||
f7ce857f PA |
4104 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4105 | return 1; | |
c5aa993b | 4106 | } |
c36b740a VP |
4107 | return 0; |
4108 | } | |
4109 | ||
a1fd2fa5 PA |
4110 | /* This function returns non-zero iff there is a software breakpoint |
4111 | inserted at PC. */ | |
c36b740a VP |
4112 | |
4113 | int | |
accd0bcd | 4114 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4115 | CORE_ADDR pc) |
4fa8626c | 4116 | { |
f7ce857f | 4117 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4118 | |
f7ce857f | 4119 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4120 | { |
f7ce857f PA |
4121 | struct bp_location *bl = *blp; |
4122 | ||
35df4500 | 4123 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4124 | continue; |
4125 | ||
f7ce857f PA |
4126 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4127 | return 1; | |
4fa8626c DJ |
4128 | } |
4129 | ||
4130 | return 0; | |
9c02b525 PA |
4131 | } |
4132 | ||
4133 | /* See breakpoint.h. */ | |
4134 | ||
4135 | int | |
accd0bcd | 4136 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4137 | CORE_ADDR pc) |
4138 | { | |
4139 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4140 | |
4141 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4142 | { | |
4143 | struct bp_location *bl = *blp; | |
4144 | ||
4145 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4146 | continue; | |
4147 | ||
4148 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4149 | return 1; | |
4150 | } | |
4151 | ||
4152 | return 0; | |
4fa8626c DJ |
4153 | } |
4154 | ||
9093389c | 4155 | int |
accd0bcd | 4156 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4157 | CORE_ADDR addr, ULONGEST len) |
4158 | { | |
4159 | struct breakpoint *bpt; | |
4160 | ||
4161 | ALL_BREAKPOINTS (bpt) | |
4162 | { | |
4163 | struct bp_location *loc; | |
4164 | ||
4165 | if (bpt->type != bp_hardware_watchpoint | |
4166 | && bpt->type != bp_access_watchpoint) | |
4167 | continue; | |
4168 | ||
4169 | if (!breakpoint_enabled (bpt)) | |
4170 | continue; | |
4171 | ||
4172 | for (loc = bpt->loc; loc; loc = loc->next) | |
4173 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4174 | { | |
4175 | CORE_ADDR l, h; | |
4176 | ||
4177 | /* Check for intersection. */ | |
768adc05 PA |
4178 | l = std::max<CORE_ADDR> (loc->address, addr); |
4179 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4180 | if (l < h) |
4181 | return 1; | |
4182 | } | |
4183 | } | |
4184 | return 0; | |
4185 | } | |
c906108c | 4186 | \f |
c5aa993b | 4187 | |
c906108c SS |
4188 | /* bpstat stuff. External routines' interfaces are documented |
4189 | in breakpoint.h. */ | |
4190 | ||
4191 | int | |
c326b90e | 4192 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4193 | { |
533be4dd | 4194 | return (ep->type == bp_catchpoint); |
c906108c SS |
4195 | } |
4196 | ||
f431efe5 PA |
4197 | /* Frees any storage that is part of a bpstat. Does not walk the |
4198 | 'next' chain. */ | |
4199 | ||
04afa70c | 4200 | bpstats::~bpstats () |
198757a8 | 4201 | { |
04afa70c TT |
4202 | if (old_val != NULL) |
4203 | value_free (old_val); | |
04afa70c TT |
4204 | if (bp_location_at != NULL) |
4205 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4206 | } |
4207 | ||
c906108c SS |
4208 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4209 | Also free any storage that is part of a bpstat. */ | |
4210 | ||
4211 | void | |
fba45db2 | 4212 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4213 | { |
4214 | bpstat p; | |
4215 | bpstat q; | |
4216 | ||
4217 | if (bsp == 0) | |
4218 | return; | |
4219 | p = *bsp; | |
4220 | while (p != NULL) | |
4221 | { | |
4222 | q = p->next; | |
04afa70c | 4223 | delete p; |
c906108c SS |
4224 | p = q; |
4225 | } | |
4226 | *bsp = NULL; | |
4227 | } | |
4228 | ||
04afa70c TT |
4229 | bpstats::bpstats (const bpstats &other) |
4230 | : next (NULL), | |
4231 | bp_location_at (other.bp_location_at), | |
4232 | breakpoint_at (other.breakpoint_at), | |
4233 | commands (other.commands), | |
4234 | old_val (other.old_val), | |
4235 | print (other.print), | |
4236 | stop (other.stop), | |
4237 | print_it (other.print_it) | |
4238 | { | |
4239 | if (old_val != NULL) | |
4240 | { | |
4241 | old_val = value_copy (old_val); | |
4242 | release_value (old_val); | |
4243 | } | |
4244 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4245 | } |
4246 | ||
c906108c SS |
4247 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4248 | is part of the bpstat is copied as well. */ | |
4249 | ||
4250 | bpstat | |
fba45db2 | 4251 | bpstat_copy (bpstat bs) |
c906108c SS |
4252 | { |
4253 | bpstat p = NULL; | |
4254 | bpstat tmp; | |
4255 | bpstat retval = NULL; | |
4256 | ||
4257 | if (bs == NULL) | |
4258 | return bs; | |
4259 | ||
4260 | for (; bs != NULL; bs = bs->next) | |
4261 | { | |
04afa70c | 4262 | tmp = new bpstats (*bs); |
31cc81e9 | 4263 | |
c906108c SS |
4264 | if (p == NULL) |
4265 | /* This is the first thing in the chain. */ | |
4266 | retval = tmp; | |
4267 | else | |
4268 | p->next = tmp; | |
4269 | p = tmp; | |
4270 | } | |
4271 | p->next = NULL; | |
4272 | return retval; | |
4273 | } | |
4274 | ||
4a64f543 | 4275 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4276 | |
4277 | bpstat | |
fba45db2 | 4278 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4279 | { |
c5aa993b JM |
4280 | if (bsp == NULL) |
4281 | return NULL; | |
c906108c | 4282 | |
c5aa993b JM |
4283 | for (; bsp != NULL; bsp = bsp->next) |
4284 | { | |
f431efe5 | 4285 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4286 | return bsp; |
4287 | } | |
c906108c SS |
4288 | return NULL; |
4289 | } | |
4290 | ||
ab04a2af TT |
4291 | /* See breakpoint.h. */ |
4292 | ||
47591c29 | 4293 | int |
427cd150 | 4294 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4295 | { |
ab04a2af TT |
4296 | for (; bsp != NULL; bsp = bsp->next) |
4297 | { | |
427cd150 TT |
4298 | if (bsp->breakpoint_at == NULL) |
4299 | { | |
4300 | /* A moribund location can never explain a signal other than | |
4301 | GDB_SIGNAL_TRAP. */ | |
4302 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4303 | return 1; |
427cd150 TT |
4304 | } |
4305 | else | |
47591c29 PA |
4306 | { |
4307 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4308 | sig)) | |
4309 | return 1; | |
4310 | } | |
ab04a2af TT |
4311 | } |
4312 | ||
47591c29 | 4313 | return 0; |
ab04a2af TT |
4314 | } |
4315 | ||
4a64f543 MS |
4316 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4317 | stopped at. *BSP upon return is a bpstat which points to the | |
4318 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4319 | good for anything but further calls to bpstat_num). | |
4320 | ||
8671a17b PA |
4321 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4322 | Return -1 if stopped at a breakpoint that has been deleted since | |
4323 | we set it. | |
4324 | Return 1 otherwise. */ | |
c906108c SS |
4325 | |
4326 | int | |
8671a17b | 4327 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4328 | { |
4329 | struct breakpoint *b; | |
4330 | ||
4331 | if ((*bsp) == NULL) | |
4332 | return 0; /* No more breakpoint values */ | |
8671a17b | 4333 | |
4a64f543 MS |
4334 | /* We assume we'll never have several bpstats that correspond to a |
4335 | single breakpoint -- otherwise, this function might return the | |
4336 | same number more than once and this will look ugly. */ | |
f431efe5 | 4337 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4338 | *bsp = (*bsp)->next; |
4339 | if (b == NULL) | |
4340 | return -1; /* breakpoint that's been deleted since */ | |
4341 | ||
4342 | *num = b->number; /* We have its number */ | |
4343 | return 1; | |
c906108c SS |
4344 | } |
4345 | ||
e93ca019 | 4346 | /* See breakpoint.h. */ |
c906108c SS |
4347 | |
4348 | void | |
e93ca019 | 4349 | bpstat_clear_actions (void) |
c906108c | 4350 | { |
e93ca019 JK |
4351 | struct thread_info *tp; |
4352 | bpstat bs; | |
4353 | ||
4354 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4355 | return; | |
4356 | ||
4357 | tp = find_thread_ptid (inferior_ptid); | |
4358 | if (tp == NULL) | |
4359 | return; | |
4360 | ||
4361 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4362 | { |
d1b0a7bf | 4363 | bs->commands = NULL; |
abf85f46 | 4364 | |
c906108c SS |
4365 | if (bs->old_val != NULL) |
4366 | { | |
4367 | value_free (bs->old_val); | |
4368 | bs->old_val = NULL; | |
4369 | } | |
4370 | } | |
4371 | } | |
4372 | ||
f3b1572e PA |
4373 | /* Called when a command is about to proceed the inferior. */ |
4374 | ||
4375 | static void | |
4376 | breakpoint_about_to_proceed (void) | |
4377 | { | |
4378 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4379 | { | |
4380 | struct thread_info *tp = inferior_thread (); | |
4381 | ||
4382 | /* Allow inferior function calls in breakpoint commands to not | |
4383 | interrupt the command list. When the call finishes | |
4384 | successfully, the inferior will be standing at the same | |
4385 | breakpoint as if nothing happened. */ | |
16c381f0 | 4386 | if (tp->control.in_infcall) |
f3b1572e PA |
4387 | return; |
4388 | } | |
4389 | ||
4390 | breakpoint_proceeded = 1; | |
4391 | } | |
4392 | ||
abf85f46 JK |
4393 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4394 | or its equivalent. */ | |
4395 | ||
4396 | static int | |
4397 | command_line_is_silent (struct command_line *cmd) | |
4398 | { | |
4f45d445 | 4399 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4400 | } |
4401 | ||
4a64f543 MS |
4402 | /* Execute all the commands associated with all the breakpoints at |
4403 | this location. Any of these commands could cause the process to | |
4404 | proceed beyond this point, etc. We look out for such changes by | |
4405 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4406 | |
347bddb7 PA |
4407 | Returns true if a breakpoint command resumed the inferior. In that |
4408 | case, it is the caller's responsibility to recall it again with the | |
4409 | bpstat of the current thread. */ | |
4410 | ||
4411 | static int | |
4412 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4413 | { |
4414 | bpstat bs; | |
347bddb7 | 4415 | int again = 0; |
c906108c SS |
4416 | |
4417 | /* Avoid endless recursion if a `source' command is contained | |
4418 | in bs->commands. */ | |
4419 | if (executing_breakpoint_commands) | |
347bddb7 | 4420 | return 0; |
c906108c | 4421 | |
81b1e71c TT |
4422 | scoped_restore save_executing |
4423 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4424 | |
1ac32117 | 4425 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4426 | |
4a64f543 | 4427 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4428 | bs = *bsp; |
4429 | ||
4430 | breakpoint_proceeded = 0; | |
4431 | for (; bs != NULL; bs = bs->next) | |
4432 | { | |
d1b0a7bf | 4433 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4434 | |
4435 | /* Take ownership of the BSP's command tree, if it has one. | |
4436 | ||
4437 | The command tree could legitimately contain commands like | |
4438 | 'step' and 'next', which call clear_proceed_status, which | |
4439 | frees stop_bpstat's command tree. To make sure this doesn't | |
4440 | free the tree we're executing out from under us, we need to | |
4441 | take ownership of the tree ourselves. Since a given bpstat's | |
4442 | commands are only executed once, we don't need to copy it; we | |
4443 | can clear the pointer in the bpstat, and make sure we free | |
4444 | the tree when we're done. */ | |
d1b0a7bf | 4445 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4446 | bs->commands = NULL; |
d1b0a7bf TT |
4447 | if (ccmd != NULL) |
4448 | cmd = ccmd.get (); | |
abf85f46 JK |
4449 | if (command_line_is_silent (cmd)) |
4450 | { | |
4451 | /* The action has been already done by bpstat_stop_status. */ | |
4452 | cmd = cmd->next; | |
4453 | } | |
6c50ab1c | 4454 | |
c906108c SS |
4455 | while (cmd != NULL) |
4456 | { | |
4457 | execute_control_command (cmd); | |
4458 | ||
4459 | if (breakpoint_proceeded) | |
4460 | break; | |
4461 | else | |
4462 | cmd = cmd->next; | |
4463 | } | |
6c50ab1c | 4464 | |
c906108c | 4465 | if (breakpoint_proceeded) |
32c1e744 | 4466 | { |
cb814510 | 4467 | if (current_ui->async) |
347bddb7 PA |
4468 | /* If we are in async mode, then the target might be still |
4469 | running, not stopped at any breakpoint, so nothing for | |
4470 | us to do here -- just return to the event loop. */ | |
4471 | ; | |
32c1e744 VP |
4472 | else |
4473 | /* In sync mode, when execute_control_command returns | |
4474 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4475 | Breakpoint commands for that stop were not run, since |
4476 | execute_command does not run breakpoint commands -- | |
4477 | only command_line_handler does, but that one is not | |
4478 | involved in execution of breakpoint commands. So, we | |
4479 | can now execute breakpoint commands. It should be | |
4480 | noted that making execute_command do bpstat actions is | |
4481 | not an option -- in this case we'll have recursive | |
4482 | invocation of bpstat for each breakpoint with a | |
4483 | command, and can easily blow up GDB stack. Instead, we | |
4484 | return true, which will trigger the caller to recall us | |
4485 | with the new stop_bpstat. */ | |
4486 | again = 1; | |
4487 | break; | |
32c1e744 | 4488 | } |
c906108c | 4489 | } |
347bddb7 PA |
4490 | return again; |
4491 | } | |
4492 | ||
4493 | void | |
4494 | bpstat_do_actions (void) | |
4495 | { | |
353d1d73 JK |
4496 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4497 | ||
347bddb7 PA |
4498 | /* Do any commands attached to breakpoint we are stopped at. */ |
4499 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4500 | && target_has_execution | |
4501 | && !is_exited (inferior_ptid) | |
4502 | && !is_executing (inferior_ptid)) | |
4503 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4504 | and only return when it is stopped at the next breakpoint, we | |
4505 | keep doing breakpoint actions until it returns false to | |
4506 | indicate the inferior was not resumed. */ | |
16c381f0 | 4507 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4508 | break; |
353d1d73 JK |
4509 | |
4510 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4511 | } |
4512 | ||
fa4727a6 DJ |
4513 | /* Print out the (old or new) value associated with a watchpoint. */ |
4514 | ||
4515 | static void | |
4516 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4517 | { | |
4518 | if (val == NULL) | |
4519 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4520 | else | |
79a45b7d TT |
4521 | { |
4522 | struct value_print_options opts; | |
4523 | get_user_print_options (&opts); | |
4524 | value_print (val, stream, &opts); | |
4525 | } | |
fa4727a6 DJ |
4526 | } |
4527 | ||
f303dbd6 PA |
4528 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4529 | debugging multiple threads. */ | |
4530 | ||
4531 | void | |
4532 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4533 | { | |
112e8700 | 4534 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4535 | return; |
4536 | ||
112e8700 | 4537 | uiout->text ("\n"); |
f303dbd6 PA |
4538 | |
4539 | if (show_thread_that_caused_stop ()) | |
4540 | { | |
4541 | const char *name; | |
4542 | struct thread_info *thr = inferior_thread (); | |
4543 | ||
112e8700 SM |
4544 | uiout->text ("Thread "); |
4545 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4546 | |
4547 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4548 | if (name != NULL) | |
4549 | { | |
112e8700 SM |
4550 | uiout->text (" \""); |
4551 | uiout->field_fmt ("name", "%s", name); | |
4552 | uiout->text ("\""); | |
f303dbd6 PA |
4553 | } |
4554 | ||
112e8700 | 4555 | uiout->text (" hit "); |
f303dbd6 PA |
4556 | } |
4557 | } | |
4558 | ||
e514a9d6 | 4559 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4560 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4561 | 'print_it' in the bpstat structure. Under some circumstances we |
4562 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4563 | normal_stop(). */ |
e514a9d6 JM |
4564 | |
4565 | static enum print_stop_action | |
4566 | print_bp_stop_message (bpstat bs) | |
4567 | { | |
4568 | switch (bs->print_it) | |
4569 | { | |
4570 | case print_it_noop: | |
4a64f543 | 4571 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4572 | return PRINT_UNKNOWN; |
4573 | break; | |
4574 | ||
4575 | case print_it_done: | |
4576 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4577 | relevant messages. */ |
e514a9d6 JM |
4578 | return PRINT_SRC_AND_LOC; |
4579 | break; | |
4580 | ||
4581 | case print_it_normal: | |
4f8d1dc6 | 4582 | { |
f431efe5 PA |
4583 | struct breakpoint *b = bs->breakpoint_at; |
4584 | ||
1a6a67de TJB |
4585 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4586 | which has since been deleted. */ | |
4587 | if (b == NULL) | |
4588 | return PRINT_UNKNOWN; | |
4589 | ||
348d480f PA |
4590 | /* Normal case. Call the breakpoint's print_it method. */ |
4591 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4592 | } |
348d480f | 4593 | break; |
3086aeae | 4594 | |
e514a9d6 | 4595 | default: |
8e65ff28 | 4596 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4597 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4598 | break; |
c906108c | 4599 | } |
c906108c SS |
4600 | } |
4601 | ||
edcc5120 TT |
4602 | /* A helper function that prints a shared library stopped event. */ |
4603 | ||
4604 | static void | |
4605 | print_solib_event (int is_catchpoint) | |
4606 | { | |
4607 | int any_deleted | |
4608 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4609 | int any_added | |
4610 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4611 | ||
4612 | if (!is_catchpoint) | |
4613 | { | |
4614 | if (any_added || any_deleted) | |
112e8700 | 4615 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4616 | else |
112e8700 SM |
4617 | current_uiout->text (_("Stopped due to shared library event (no " |
4618 | "libraries added or removed)\n")); | |
edcc5120 TT |
4619 | } |
4620 | ||
112e8700 SM |
4621 | if (current_uiout->is_mi_like_p ()) |
4622 | current_uiout->field_string ("reason", | |
4623 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4624 | |
4625 | if (any_deleted) | |
4626 | { | |
edcc5120 TT |
4627 | char *name; |
4628 | int ix; | |
4629 | ||
112e8700 | 4630 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4631 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4632 | for (ix = 0; |
4633 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4634 | ix, name); | |
4635 | ++ix) | |
4636 | { | |
4637 | if (ix > 0) | |
112e8700 SM |
4638 | current_uiout->text (" "); |
4639 | current_uiout->field_string ("library", name); | |
4640 | current_uiout->text ("\n"); | |
edcc5120 | 4641 | } |
edcc5120 TT |
4642 | } |
4643 | ||
4644 | if (any_added) | |
4645 | { | |
4646 | struct so_list *iter; | |
4647 | int ix; | |
edcc5120 | 4648 | |
112e8700 | 4649 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4650 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4651 | for (ix = 0; |
4652 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4653 | ix, iter); | |
4654 | ++ix) | |
4655 | { | |
4656 | if (ix > 0) | |
112e8700 SM |
4657 | current_uiout->text (" "); |
4658 | current_uiout->field_string ("library", iter->so_name); | |
4659 | current_uiout->text ("\n"); | |
edcc5120 | 4660 | } |
edcc5120 TT |
4661 | } |
4662 | } | |
4663 | ||
e514a9d6 JM |
4664 | /* Print a message indicating what happened. This is called from |
4665 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4666 | list - a list of the eventpoints that caused this stop. KIND is |
4667 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4668 | routine calls the generic print routine for printing a message |
4669 | about reasons for stopping. This will print (for example) the | |
4670 | "Breakpoint n," part of the output. The return value of this | |
4671 | routine is one of: | |
c906108c | 4672 | |
4a64f543 | 4673 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4674 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4675 | code to print the location. An example is |
c5aa993b JM |
4676 | "Breakpoint 1, " which should be followed by |
4677 | the location. | |
917317f4 | 4678 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4679 | to also print the location part of the message. |
4680 | An example is the catch/throw messages, which | |
4a64f543 | 4681 | don't require a location appended to the end. |
917317f4 | 4682 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4683 | further info to be printed. */ |
c906108c | 4684 | |
917317f4 | 4685 | enum print_stop_action |
36dfb11c | 4686 | bpstat_print (bpstat bs, int kind) |
c906108c | 4687 | { |
f486487f | 4688 | enum print_stop_action val; |
c5aa993b | 4689 | |
c906108c | 4690 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4691 | (Currently all watchpoints go on the bpstat whether hit or not. |
4692 | That probably could (should) be changed, provided care is taken | |
c906108c | 4693 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4694 | for (; bs; bs = bs->next) |
4695 | { | |
4696 | val = print_bp_stop_message (bs); | |
4697 | if (val == PRINT_SRC_ONLY | |
4698 | || val == PRINT_SRC_AND_LOC | |
4699 | || val == PRINT_NOTHING) | |
4700 | return val; | |
4701 | } | |
c906108c | 4702 | |
36dfb11c TT |
4703 | /* If we had hit a shared library event breakpoint, |
4704 | print_bp_stop_message would print out this message. If we hit an | |
4705 | OS-level shared library event, do the same thing. */ | |
4706 | if (kind == TARGET_WAITKIND_LOADED) | |
4707 | { | |
edcc5120 | 4708 | print_solib_event (0); |
36dfb11c TT |
4709 | return PRINT_NOTHING; |
4710 | } | |
4711 | ||
e514a9d6 | 4712 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4713 | with and nothing was printed. */ |
917317f4 | 4714 | return PRINT_UNKNOWN; |
c906108c SS |
4715 | } |
4716 | ||
bf469271 | 4717 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4718 | |
bf469271 PA |
4719 | static bool |
4720 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4721 | { |
278cd55f | 4722 | struct value *mark = value_mark (); |
bf469271 | 4723 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4724 | |
c906108c | 4725 | value_free_to_mark (mark); |
bf469271 | 4726 | return res; |
c906108c SS |
4727 | } |
4728 | ||
5760d0ab | 4729 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4730 | |
04afa70c TT |
4731 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4732 | : next (NULL), | |
4733 | bp_location_at (bl), | |
4734 | breakpoint_at (bl->owner), | |
4735 | commands (NULL), | |
4736 | old_val (NULL), | |
4737 | print (0), | |
4738 | stop (0), | |
4739 | print_it (print_it_normal) | |
c906108c | 4740 | { |
f431efe5 | 4741 | incref_bp_location (bl); |
04afa70c TT |
4742 | **bs_link_pointer = this; |
4743 | *bs_link_pointer = &next; | |
4744 | } | |
4745 | ||
4746 | bpstats::bpstats () | |
4747 | : next (NULL), | |
4748 | bp_location_at (NULL), | |
4749 | breakpoint_at (NULL), | |
4750 | commands (NULL), | |
4751 | old_val (NULL), | |
4752 | print (0), | |
4753 | stop (0), | |
4754 | print_it (print_it_normal) | |
4755 | { | |
c906108c SS |
4756 | } |
4757 | \f | |
d983da9c DJ |
4758 | /* The target has stopped with waitstatus WS. Check if any hardware |
4759 | watchpoints have triggered, according to the target. */ | |
4760 | ||
4761 | int | |
4762 | watchpoints_triggered (struct target_waitstatus *ws) | |
4763 | { | |
d92524f1 | 4764 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4765 | CORE_ADDR addr; |
4766 | struct breakpoint *b; | |
4767 | ||
4768 | if (!stopped_by_watchpoint) | |
4769 | { | |
4770 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4771 | as not triggered. */ | |
4772 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4773 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4774 | { |
4775 | struct watchpoint *w = (struct watchpoint *) b; | |
4776 | ||
4777 | w->watchpoint_triggered = watch_triggered_no; | |
4778 | } | |
d983da9c DJ |
4779 | |
4780 | return 0; | |
4781 | } | |
4782 | ||
4783 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4784 | { | |
4785 | /* We were stopped by a watchpoint, but we don't know where. | |
4786 | Mark all watchpoints as unknown. */ | |
4787 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4788 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4789 | { |
4790 | struct watchpoint *w = (struct watchpoint *) b; | |
4791 | ||
4792 | w->watchpoint_triggered = watch_triggered_unknown; | |
4793 | } | |
d983da9c | 4794 | |
3c4797ba | 4795 | return 1; |
d983da9c DJ |
4796 | } |
4797 | ||
4798 | /* The target could report the data address. Mark watchpoints | |
4799 | affected by this data address as triggered, and all others as not | |
4800 | triggered. */ | |
4801 | ||
4802 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4803 | if (is_hardware_watchpoint (b)) |
d983da9c | 4804 | { |
3a5c3e22 | 4805 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4806 | struct bp_location *loc; |
d983da9c | 4807 | |
3a5c3e22 | 4808 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4809 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4810 | { |
3a5c3e22 | 4811 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4812 | { |
3a5c3e22 PA |
4813 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4814 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4815 | |
4816 | if (newaddr == start) | |
4817 | { | |
3a5c3e22 | 4818 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4819 | break; |
4820 | } | |
4821 | } | |
4822 | /* Exact match not required. Within range is sufficient. */ | |
4823 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4824 | addr, loc->address, | |
4825 | loc->length)) | |
4826 | { | |
3a5c3e22 | 4827 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4828 | break; |
4829 | } | |
4830 | } | |
d983da9c DJ |
4831 | } |
4832 | ||
4833 | return 1; | |
4834 | } | |
4835 | ||
bf469271 PA |
4836 | /* Possible return values for watchpoint_check. */ |
4837 | enum wp_check_result | |
4838 | { | |
4839 | /* The watchpoint has been deleted. */ | |
4840 | WP_DELETED = 1, | |
4841 | ||
4842 | /* The value has changed. */ | |
4843 | WP_VALUE_CHANGED = 2, | |
4844 | ||
4845 | /* The value has not changed. */ | |
4846 | WP_VALUE_NOT_CHANGED = 3, | |
4847 | ||
4848 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4849 | WP_IGNORE = 4, | |
4850 | }; | |
c906108c SS |
4851 | |
4852 | #define BP_TEMPFLAG 1 | |
4853 | #define BP_HARDWAREFLAG 2 | |
4854 | ||
4a64f543 | 4855 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4856 | changed. */ |
553e4c11 | 4857 | |
bf469271 PA |
4858 | static wp_check_result |
4859 | watchpoint_check (bpstat bs) | |
c906108c | 4860 | { |
3a5c3e22 | 4861 | struct watchpoint *b; |
c906108c SS |
4862 | struct frame_info *fr; |
4863 | int within_current_scope; | |
4864 | ||
f431efe5 | 4865 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4866 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4867 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4868 | |
f6bc2008 PA |
4869 | /* If this is a local watchpoint, we only want to check if the |
4870 | watchpoint frame is in scope if the current thread is the thread | |
4871 | that was used to create the watchpoint. */ | |
4872 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4873 | return WP_IGNORE; |
f6bc2008 | 4874 | |
c906108c SS |
4875 | if (b->exp_valid_block == NULL) |
4876 | within_current_scope = 1; | |
4877 | else | |
4878 | { | |
edb3359d DJ |
4879 | struct frame_info *frame = get_current_frame (); |
4880 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4881 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4882 | ||
c9cf6e20 | 4883 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4884 | still in the function but the stack frame has already been |
4885 | invalidated. Since we can't rely on the values of local | |
4886 | variables after the stack has been destroyed, we are treating | |
4887 | the watchpoint in that state as `not changed' without further | |
4888 | checking. Don't mark watchpoints as changed if the current | |
4889 | frame is in an epilogue - even if they are in some other | |
4890 | frame, our view of the stack is likely to be wrong and | |
4891 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4892 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4893 | return WP_IGNORE; |
a0f49112 | 4894 | |
101dcfbe | 4895 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4896 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4897 | |
4898 | /* If we've gotten confused in the unwinder, we might have | |
4899 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4900 | if (within_current_scope) |
4901 | { | |
4902 | struct symbol *function; | |
4903 | ||
4904 | function = get_frame_function (fr); | |
4905 | if (function == NULL | |
4906 | || !contained_in (b->exp_valid_block, | |
4907 | SYMBOL_BLOCK_VALUE (function))) | |
4908 | within_current_scope = 0; | |
4909 | } | |
69fbadd5 | 4910 | |
edb3359d | 4911 | if (within_current_scope) |
c906108c SS |
4912 | /* If we end up stopping, the current frame will get selected |
4913 | in normal_stop. So this call to select_frame won't affect | |
4914 | the user. */ | |
0f7d239c | 4915 | select_frame (fr); |
c906108c | 4916 | } |
c5aa993b | 4917 | |
c906108c SS |
4918 | if (within_current_scope) |
4919 | { | |
4a64f543 MS |
4920 | /* We use value_{,free_to_}mark because it could be a *long* |
4921 | time before we return to the command level and call | |
4922 | free_all_values. We can't call free_all_values because we | |
4923 | might be in the middle of evaluating a function call. */ | |
c906108c | 4924 | |
0cf6dd15 | 4925 | int pc = 0; |
9c06b0b4 | 4926 | struct value *mark; |
fa4727a6 DJ |
4927 | struct value *new_val; |
4928 | ||
c1fc2657 | 4929 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4930 | /* Since we don't know the exact trigger address (from |
4931 | stopped_data_address), just tell the user we've triggered | |
4932 | a mask watchpoint. */ | |
4933 | return WP_VALUE_CHANGED; | |
4934 | ||
4935 | mark = value_mark (); | |
4d01a485 | 4936 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4937 | |
bb9d5f81 PP |
4938 | if (b->val_bitsize != 0) |
4939 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4940 | ||
4a64f543 MS |
4941 | /* We use value_equal_contents instead of value_equal because |
4942 | the latter coerces an array to a pointer, thus comparing just | |
4943 | the address of the array instead of its contents. This is | |
4944 | not what we want. */ | |
fa4727a6 | 4945 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4946 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4947 | { |
fa4727a6 DJ |
4948 | if (new_val != NULL) |
4949 | { | |
4950 | release_value (new_val); | |
4951 | value_free_to_mark (mark); | |
4952 | } | |
c906108c SS |
4953 | bs->old_val = b->val; |
4954 | b->val = new_val; | |
fa4727a6 | 4955 | b->val_valid = 1; |
c906108c SS |
4956 | return WP_VALUE_CHANGED; |
4957 | } | |
4958 | else | |
4959 | { | |
60e1c644 | 4960 | /* Nothing changed. */ |
c906108c | 4961 | value_free_to_mark (mark); |
c906108c SS |
4962 | return WP_VALUE_NOT_CHANGED; |
4963 | } | |
4964 | } | |
4965 | else | |
4966 | { | |
4967 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4968 | if we temporarily ignored the watchpoint, then when |
4969 | we reenter the block in which it is valid it contains | |
4970 | garbage (in the case of a function, it may have two | |
4971 | garbage values, one before and one after the prologue). | |
4972 | So we can't even detect the first assignment to it and | |
4973 | watch after that (since the garbage may or may not equal | |
4974 | the first value assigned). */ | |
348d480f PA |
4975 | /* We print all the stop information in |
4976 | breakpoint_ops->print_it, but in this case, by the time we | |
4977 | call breakpoint_ops->print_it this bp will be deleted | |
4978 | already. So we have no choice but print the information | |
4979 | here. */ | |
468afe6c | 4980 | |
0e454242 | 4981 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4982 | { |
4983 | struct ui_out *uiout = current_uiout; | |
4984 | ||
112e8700 SM |
4985 | if (uiout->is_mi_like_p ()) |
4986 | uiout->field_string | |
4987 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4988 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4989 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4990 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4991 | "which its expression is valid.\n"); |
4992 | } | |
4ce44c66 | 4993 | |
cdac0397 | 4994 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4995 | b->commands = NULL; |
d0fb5eae | 4996 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4997 | |
4998 | return WP_DELETED; | |
4999 | } | |
5000 | } | |
5001 | ||
18a18393 | 5002 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5003 | breakpoint location BL. This function does not check if we should |
5004 | stop, only if BL explains the stop. */ | |
5005 | ||
18a18393 | 5006 | static int |
6c95b8df | 5007 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5008 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5009 | const struct target_waitstatus *ws) |
18a18393 VP |
5010 | { |
5011 | struct breakpoint *b = bl->owner; | |
5012 | ||
348d480f | 5013 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5014 | gdb_assert (b != NULL); |
5015 | ||
bd522513 | 5016 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5017 | } |
5018 | ||
3a5c3e22 PA |
5019 | /* Determine if the watched values have actually changed, and we |
5020 | should stop. If not, set BS->stop to 0. */ | |
5021 | ||
18a18393 VP |
5022 | static void |
5023 | bpstat_check_watchpoint (bpstat bs) | |
5024 | { | |
2bdf28a0 | 5025 | const struct bp_location *bl; |
3a5c3e22 | 5026 | struct watchpoint *b; |
2bdf28a0 JK |
5027 | |
5028 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5029 | bl = bs->bp_location_at; |
2bdf28a0 | 5030 | gdb_assert (bl != NULL); |
3a5c3e22 | 5031 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5032 | gdb_assert (b != NULL); |
18a18393 | 5033 | |
18a18393 | 5034 | { |
18a18393 VP |
5035 | int must_check_value = 0; |
5036 | ||
c1fc2657 | 5037 | if (b->type == bp_watchpoint) |
18a18393 VP |
5038 | /* For a software watchpoint, we must always check the |
5039 | watched value. */ | |
5040 | must_check_value = 1; | |
5041 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5042 | /* We have a hardware watchpoint (read, write, or access) | |
5043 | and the target earlier reported an address watched by | |
5044 | this watchpoint. */ | |
5045 | must_check_value = 1; | |
5046 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5047 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5048 | /* We were stopped by a hardware watchpoint, but the target could |
5049 | not report the data address. We must check the watchpoint's | |
5050 | value. Access and read watchpoints are out of luck; without | |
5051 | a data address, we can't figure it out. */ | |
5052 | must_check_value = 1; | |
3a5c3e22 | 5053 | |
18a18393 VP |
5054 | if (must_check_value) |
5055 | { | |
bf469271 PA |
5056 | wp_check_result e; |
5057 | ||
5058 | TRY | |
5059 | { | |
5060 | e = watchpoint_check (bs); | |
5061 | } | |
5062 | CATCH (ex, RETURN_MASK_ALL) | |
5063 | { | |
5064 | exception_fprintf (gdb_stderr, ex, | |
5065 | "Error evaluating expression " | |
5066 | "for watchpoint %d\n", | |
5067 | b->number); | |
5068 | ||
5069 | SWITCH_THRU_ALL_UIS () | |
5070 | { | |
5071 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5072 | b->number); | |
5073 | } | |
5074 | watchpoint_del_at_next_stop (b); | |
5075 | e = WP_DELETED; | |
5076 | } | |
5077 | END_CATCH | |
5078 | ||
18a18393 VP |
5079 | switch (e) |
5080 | { | |
5081 | case WP_DELETED: | |
5082 | /* We've already printed what needs to be printed. */ | |
5083 | bs->print_it = print_it_done; | |
5084 | /* Stop. */ | |
5085 | break; | |
60e1c644 PA |
5086 | case WP_IGNORE: |
5087 | bs->print_it = print_it_noop; | |
5088 | bs->stop = 0; | |
5089 | break; | |
18a18393 | 5090 | case WP_VALUE_CHANGED: |
c1fc2657 | 5091 | if (b->type == bp_read_watchpoint) |
18a18393 | 5092 | { |
85d721b8 PA |
5093 | /* There are two cases to consider here: |
5094 | ||
4a64f543 | 5095 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5096 | In that case, trust the target, and always report |
5097 | the watchpoint hit to the user. Even though | |
5098 | reads don't cause value changes, the value may | |
5099 | have changed since the last time it was read, and | |
5100 | since we're not trapping writes, we will not see | |
5101 | those, and as such we should ignore our notion of | |
5102 | old value. | |
5103 | ||
4a64f543 | 5104 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5105 | reads and writes. There are two ways this may |
5106 | happen: | |
5107 | ||
4a64f543 | 5108 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5109 | reads only, but can break on accesses (reads or |
5110 | writes), such as e.g., x86. We detect this case | |
5111 | at the time we try to insert read watchpoints. | |
5112 | ||
4a64f543 | 5113 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5114 | watchpoints, but, the user set an access or write |
5115 | watchpoint watching the same memory as this read | |
5116 | watchpoint. | |
5117 | ||
5118 | If we're watching memory writes as well as reads, | |
5119 | ignore watchpoint hits when we find that the | |
5120 | value hasn't changed, as reads don't cause | |
5121 | changes. This still gives false positives when | |
5122 | the program writes the same value to memory as | |
5123 | what there was already in memory (we will confuse | |
5124 | it for a read), but it's much better than | |
5125 | nothing. */ | |
5126 | ||
5127 | int other_write_watchpoint = 0; | |
5128 | ||
5129 | if (bl->watchpoint_type == hw_read) | |
5130 | { | |
5131 | struct breakpoint *other_b; | |
5132 | ||
5133 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5134 | if (other_b->type == bp_hardware_watchpoint |
5135 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5136 | { |
3a5c3e22 PA |
5137 | struct watchpoint *other_w = |
5138 | (struct watchpoint *) other_b; | |
5139 | ||
5140 | if (other_w->watchpoint_triggered | |
5141 | == watch_triggered_yes) | |
5142 | { | |
5143 | other_write_watchpoint = 1; | |
5144 | break; | |
5145 | } | |
85d721b8 PA |
5146 | } |
5147 | } | |
5148 | ||
5149 | if (other_write_watchpoint | |
5150 | || bl->watchpoint_type == hw_access) | |
5151 | { | |
5152 | /* We're watching the same memory for writes, | |
5153 | and the value changed since the last time we | |
5154 | updated it, so this trap must be for a write. | |
5155 | Ignore it. */ | |
5156 | bs->print_it = print_it_noop; | |
5157 | bs->stop = 0; | |
5158 | } | |
18a18393 VP |
5159 | } |
5160 | break; | |
5161 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5162 | if (b->type == bp_hardware_watchpoint |
5163 | || b->type == bp_watchpoint) | |
18a18393 VP |
5164 | { |
5165 | /* Don't stop: write watchpoints shouldn't fire if | |
5166 | the value hasn't changed. */ | |
5167 | bs->print_it = print_it_noop; | |
5168 | bs->stop = 0; | |
5169 | } | |
5170 | /* Stop. */ | |
5171 | break; | |
5172 | default: | |
5173 | /* Can't happen. */ | |
18a18393 VP |
5174 | break; |
5175 | } | |
5176 | } | |
5177 | else /* must_check_value == 0 */ | |
5178 | { | |
5179 | /* This is a case where some watchpoint(s) triggered, but | |
5180 | not at the address of this watchpoint, or else no | |
5181 | watchpoint triggered after all. So don't print | |
5182 | anything for this watchpoint. */ | |
5183 | bs->print_it = print_it_noop; | |
5184 | bs->stop = 0; | |
5185 | } | |
5186 | } | |
5187 | } | |
5188 | ||
7d4df6a4 DE |
5189 | /* For breakpoints that are currently marked as telling gdb to stop, |
5190 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5191 | of breakpoint referred to by BS. If we should not stop for this |
5192 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5193 | |
18a18393 VP |
5194 | static void |
5195 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5196 | { | |
2bdf28a0 JK |
5197 | const struct bp_location *bl; |
5198 | struct breakpoint *b; | |
bf469271 PA |
5199 | /* Assume stop. */ |
5200 | bool condition_result = true; | |
7d4df6a4 DE |
5201 | struct expression *cond; |
5202 | ||
5203 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5204 | |
5205 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5206 | bl = bs->bp_location_at; |
2bdf28a0 | 5207 | gdb_assert (bl != NULL); |
f431efe5 | 5208 | b = bs->breakpoint_at; |
2bdf28a0 | 5209 | gdb_assert (b != NULL); |
18a18393 | 5210 | |
b775012e LM |
5211 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5212 | need to do so again since GDB does not know if we stopped due to a | |
5213 | breakpoint or a single step breakpoint. */ | |
5214 | ||
18a18393 | 5215 | if (frame_id_p (b->frame_id) |
edb3359d | 5216 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5217 | { |
7d4df6a4 DE |
5218 | bs->stop = 0; |
5219 | return; | |
5220 | } | |
60e1c644 | 5221 | |
12ab52e9 PA |
5222 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5223 | evaluating the condition if this isn't the specified | |
5224 | thread/task. */ | |
5d5658a1 | 5225 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5226 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5227 | ||
6c1b0f7b DE |
5228 | { |
5229 | bs->stop = 0; | |
5230 | return; | |
5231 | } | |
5232 | ||
6dddc817 DE |
5233 | /* Evaluate extension language breakpoints that have a "stop" method |
5234 | implemented. */ | |
5235 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5236 | |
7d4df6a4 DE |
5237 | if (is_watchpoint (b)) |
5238 | { | |
5239 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5240 | |
4d01a485 | 5241 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5242 | } |
5243 | else | |
4d01a485 | 5244 | cond = bl->cond.get (); |
60e1c644 | 5245 | |
7d4df6a4 DE |
5246 | if (cond && b->disposition != disp_del_at_next_stop) |
5247 | { | |
5248 | int within_current_scope = 1; | |
5249 | struct watchpoint * w; | |
60e1c644 | 5250 | |
7d4df6a4 DE |
5251 | /* We use value_mark and value_free_to_mark because it could |
5252 | be a long time before we return to the command level and | |
5253 | call free_all_values. We can't call free_all_values | |
5254 | because we might be in the middle of evaluating a | |
5255 | function call. */ | |
5256 | struct value *mark = value_mark (); | |
5257 | ||
5258 | if (is_watchpoint (b)) | |
5259 | w = (struct watchpoint *) b; | |
5260 | else | |
5261 | w = NULL; | |
5262 | ||
5263 | /* Need to select the frame, with all that implies so that | |
5264 | the conditions will have the right context. Because we | |
5265 | use the frame, we will not see an inlined function's | |
5266 | variables when we arrive at a breakpoint at the start | |
5267 | of the inlined function; the current frame will be the | |
5268 | call site. */ | |
5269 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5270 | select_frame (get_current_frame ()); | |
5271 | else | |
18a18393 | 5272 | { |
7d4df6a4 DE |
5273 | struct frame_info *frame; |
5274 | ||
5275 | /* For local watchpoint expressions, which particular | |
5276 | instance of a local is being watched matters, so we | |
5277 | keep track of the frame to evaluate the expression | |
5278 | in. To evaluate the condition however, it doesn't | |
5279 | really matter which instantiation of the function | |
5280 | where the condition makes sense triggers the | |
5281 | watchpoint. This allows an expression like "watch | |
5282 | global if q > 10" set in `func', catch writes to | |
5283 | global on all threads that call `func', or catch | |
5284 | writes on all recursive calls of `func' by a single | |
5285 | thread. We simply always evaluate the condition in | |
5286 | the innermost frame that's executing where it makes | |
5287 | sense to evaluate the condition. It seems | |
5288 | intuitive. */ | |
5289 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5290 | if (frame != NULL) | |
5291 | select_frame (frame); | |
5292 | else | |
5293 | within_current_scope = 0; | |
18a18393 | 5294 | } |
7d4df6a4 | 5295 | if (within_current_scope) |
bf469271 PA |
5296 | { |
5297 | TRY | |
5298 | { | |
5299 | condition_result = breakpoint_cond_eval (cond); | |
5300 | } | |
5301 | CATCH (ex, RETURN_MASK_ALL) | |
5302 | { | |
5303 | exception_fprintf (gdb_stderr, ex, | |
5304 | "Error in testing breakpoint condition:\n"); | |
5305 | } | |
5306 | END_CATCH | |
5307 | } | |
7d4df6a4 | 5308 | else |
18a18393 | 5309 | { |
7d4df6a4 DE |
5310 | warning (_("Watchpoint condition cannot be tested " |
5311 | "in the current scope")); | |
5312 | /* If we failed to set the right context for this | |
5313 | watchpoint, unconditionally report it. */ | |
18a18393 | 5314 | } |
7d4df6a4 DE |
5315 | /* FIXME-someday, should give breakpoint #. */ |
5316 | value_free_to_mark (mark); | |
18a18393 | 5317 | } |
7d4df6a4 | 5318 | |
bf469271 | 5319 | if (cond && !condition_result) |
7d4df6a4 DE |
5320 | { |
5321 | bs->stop = 0; | |
5322 | } | |
7d4df6a4 DE |
5323 | else if (b->ignore_count > 0) |
5324 | { | |
5325 | b->ignore_count--; | |
5326 | bs->stop = 0; | |
5327 | /* Increase the hit count even though we don't stop. */ | |
5328 | ++(b->hit_count); | |
5329 | observer_notify_breakpoint_modified (b); | |
5330 | } | |
18a18393 VP |
5331 | } |
5332 | ||
1cf4d951 PA |
5333 | /* Returns true if we need to track moribund locations of LOC's type |
5334 | on the current target. */ | |
5335 | ||
5336 | static int | |
5337 | need_moribund_for_location_type (struct bp_location *loc) | |
5338 | { | |
5339 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5340 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5341 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5342 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5343 | } | |
5344 | ||
18a18393 | 5345 | |
9709f61c | 5346 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5347 | BP_ADDR in thread PTID. |
c906108c | 5348 | |
d983da9c | 5349 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5350 | don't understand this stop. Result is a chain of bpstat's such |
5351 | that: | |
c906108c | 5352 | |
c5aa993b | 5353 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5354 | |
c5aa993b | 5355 | if we understand why we stopped, the result is not null. |
c906108c | 5356 | |
c5aa993b JM |
5357 | Each element of the chain refers to a particular breakpoint or |
5358 | watchpoint at which we have stopped. (We may have stopped for | |
5359 | several reasons concurrently.) | |
c906108c | 5360 | |
c5aa993b JM |
5361 | Each element of the chain has valid next, breakpoint_at, |
5362 | commands, FIXME??? fields. */ | |
c906108c SS |
5363 | |
5364 | bpstat | |
accd0bcd | 5365 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5366 | CORE_ADDR bp_addr, ptid_t ptid, |
5367 | const struct target_waitstatus *ws) | |
c906108c | 5368 | { |
0d381245 | 5369 | struct breakpoint *b = NULL; |
afe38095 | 5370 | struct bp_location *bl; |
20874c92 | 5371 | struct bp_location *loc; |
5760d0ab JK |
5372 | /* First item of allocated bpstat's. */ |
5373 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5374 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5375 | bpstat bs; |
20874c92 | 5376 | int ix; |
429374b8 | 5377 | int need_remove_insert; |
f431efe5 | 5378 | int removed_any; |
c906108c | 5379 | |
f431efe5 PA |
5380 | /* First, build the bpstat chain with locations that explain a |
5381 | target stop, while being careful to not set the target running, | |
5382 | as that may invalidate locations (in particular watchpoint | |
5383 | locations are recreated). Resuming will happen here with | |
5384 | breakpoint conditions or watchpoint expressions that include | |
5385 | inferior function calls. */ | |
c5aa993b | 5386 | |
429374b8 JK |
5387 | ALL_BREAKPOINTS (b) |
5388 | { | |
1a853c52 | 5389 | if (!breakpoint_enabled (b)) |
429374b8 | 5390 | continue; |
a5606eee | 5391 | |
429374b8 JK |
5392 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5393 | { | |
4a64f543 MS |
5394 | /* For hardware watchpoints, we look only at the first |
5395 | location. The watchpoint_check function will work on the | |
5396 | entire expression, not the individual locations. For | |
5397 | read watchpoints, the watchpoints_triggered function has | |
5398 | checked all locations already. */ | |
429374b8 JK |
5399 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5400 | break; | |
18a18393 | 5401 | |
f6592439 | 5402 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5403 | continue; |
c5aa993b | 5404 | |
09ac7c10 | 5405 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5406 | continue; |
c5aa993b | 5407 | |
4a64f543 MS |
5408 | /* Come here if it's a watchpoint, or if the break address |
5409 | matches. */ | |
c5aa993b | 5410 | |
04afa70c | 5411 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5412 | explain stop. */ |
c5aa993b | 5413 | |
f431efe5 PA |
5414 | /* Assume we stop. Should we find a watchpoint that is not |
5415 | actually triggered, or if the condition of the breakpoint | |
5416 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5417 | bs->stop = 1; |
5418 | bs->print = 1; | |
d983da9c | 5419 | |
f431efe5 PA |
5420 | /* If this is a scope breakpoint, mark the associated |
5421 | watchpoint as triggered so that we will handle the | |
5422 | out-of-scope event. We'll get to the watchpoint next | |
5423 | iteration. */ | |
d0fb5eae | 5424 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5425 | { |
5426 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5427 | ||
5428 | w->watchpoint_triggered = watch_triggered_yes; | |
5429 | } | |
f431efe5 PA |
5430 | } |
5431 | } | |
5432 | ||
7c16b83e | 5433 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5434 | if (!target_supports_stopped_by_sw_breakpoint () |
5435 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5436 | { |
1cf4d951 | 5437 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5438 | { |
1cf4d951 PA |
5439 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5440 | && need_moribund_for_location_type (loc)) | |
5441 | { | |
04afa70c | 5442 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5443 | /* For hits of moribund locations, we should just proceed. */ |
5444 | bs->stop = 0; | |
5445 | bs->print = 0; | |
5446 | bs->print_it = print_it_noop; | |
5447 | } | |
f431efe5 PA |
5448 | } |
5449 | } | |
5450 | ||
edcc5120 TT |
5451 | /* A bit of special processing for shlib breakpoints. We need to |
5452 | process solib loading here, so that the lists of loaded and | |
5453 | unloaded libraries are correct before we handle "catch load" and | |
5454 | "catch unload". */ | |
5455 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5456 | { | |
5d268276 | 5457 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5458 | { |
5459 | handle_solib_event (); | |
5460 | break; | |
5461 | } | |
5462 | } | |
5463 | ||
f431efe5 PA |
5464 | /* Now go through the locations that caused the target to stop, and |
5465 | check whether we're interested in reporting this stop to higher | |
5466 | layers, or whether we should resume the target transparently. */ | |
5467 | ||
5468 | removed_any = 0; | |
5469 | ||
5760d0ab | 5470 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5471 | { |
5472 | if (!bs->stop) | |
5473 | continue; | |
5474 | ||
f431efe5 | 5475 | b = bs->breakpoint_at; |
348d480f PA |
5476 | b->ops->check_status (bs); |
5477 | if (bs->stop) | |
28010a5d | 5478 | { |
348d480f | 5479 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5480 | |
429374b8 JK |
5481 | if (bs->stop) |
5482 | { | |
5483 | ++(b->hit_count); | |
8d3788bd | 5484 | observer_notify_breakpoint_modified (b); |
c906108c | 5485 | |
4a64f543 | 5486 | /* We will stop here. */ |
429374b8 JK |
5487 | if (b->disposition == disp_disable) |
5488 | { | |
816338b5 | 5489 | --(b->enable_count); |
1a853c52 | 5490 | if (b->enable_count <= 0) |
429374b8 | 5491 | b->enable_state = bp_disabled; |
f431efe5 | 5492 | removed_any = 1; |
429374b8 JK |
5493 | } |
5494 | if (b->silent) | |
5495 | bs->print = 0; | |
5496 | bs->commands = b->commands; | |
abf85f46 | 5497 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5498 | ? bs->commands.get () : NULL)) |
abf85f46 | 5499 | bs->print = 0; |
9d6e6e84 HZ |
5500 | |
5501 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5502 | } |
5503 | ||
348d480f | 5504 | } |
a9b3a50f PA |
5505 | |
5506 | /* Print nothing for this entry if we don't stop or don't | |
5507 | print. */ | |
5508 | if (!bs->stop || !bs->print) | |
5509 | bs->print_it = print_it_noop; | |
429374b8 | 5510 | } |
876fa593 | 5511 | |
d983da9c DJ |
5512 | /* If we aren't stopping, the value of some hardware watchpoint may |
5513 | not have changed, but the intermediate memory locations we are | |
5514 | watching may have. Don't bother if we're stopping; this will get | |
5515 | done later. */ | |
d832cb68 | 5516 | need_remove_insert = 0; |
5760d0ab JK |
5517 | if (! bpstat_causes_stop (bs_head)) |
5518 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5519 | if (!bs->stop |
f431efe5 PA |
5520 | && bs->breakpoint_at |
5521 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5522 | { |
3a5c3e22 PA |
5523 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5524 | ||
5525 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5526 | need_remove_insert = 1; |
d983da9c DJ |
5527 | } |
5528 | ||
d832cb68 | 5529 | if (need_remove_insert) |
44702360 | 5530 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5531 | else if (removed_any) |
44702360 | 5532 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5533 | |
5760d0ab | 5534 | return bs_head; |
c906108c | 5535 | } |
628fe4e4 JK |
5536 | |
5537 | static void | |
5538 | handle_jit_event (void) | |
5539 | { | |
5540 | struct frame_info *frame; | |
5541 | struct gdbarch *gdbarch; | |
5542 | ||
243a9253 PA |
5543 | if (debug_infrun) |
5544 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5545 | ||
628fe4e4 JK |
5546 | /* Switch terminal for any messages produced by |
5547 | breakpoint_re_set. */ | |
223ffa71 | 5548 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5549 | |
5550 | frame = get_current_frame (); | |
5551 | gdbarch = get_frame_arch (frame); | |
5552 | ||
5553 | jit_event_handler (gdbarch); | |
5554 | ||
223ffa71 | 5555 | target_terminal::inferior (); |
628fe4e4 JK |
5556 | } |
5557 | ||
5558 | /* Prepare WHAT final decision for infrun. */ | |
5559 | ||
5560 | /* Decide what infrun needs to do with this bpstat. */ | |
5561 | ||
c906108c | 5562 | struct bpstat_what |
0e30163f | 5563 | bpstat_what (bpstat bs_head) |
c906108c | 5564 | { |
c906108c | 5565 | struct bpstat_what retval; |
0e30163f | 5566 | bpstat bs; |
c906108c | 5567 | |
628fe4e4 | 5568 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5569 | retval.call_dummy = STOP_NONE; |
186c406b | 5570 | retval.is_longjmp = 0; |
628fe4e4 | 5571 | |
0e30163f | 5572 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5573 | { |
628fe4e4 JK |
5574 | /* Extract this BS's action. After processing each BS, we check |
5575 | if its action overrides all we've seem so far. */ | |
5576 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5577 | enum bptype bptype; | |
5578 | ||
c906108c | 5579 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5580 | { |
5581 | /* I suspect this can happen if it was a momentary | |
5582 | breakpoint which has since been deleted. */ | |
5583 | bptype = bp_none; | |
5584 | } | |
20874c92 | 5585 | else |
f431efe5 | 5586 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5587 | |
5588 | switch (bptype) | |
c906108c SS |
5589 | { |
5590 | case bp_none: | |
628fe4e4 | 5591 | break; |
c906108c SS |
5592 | case bp_breakpoint: |
5593 | case bp_hardware_breakpoint: | |
7c16b83e | 5594 | case bp_single_step: |
c906108c SS |
5595 | case bp_until: |
5596 | case bp_finish: | |
a9b3a50f | 5597 | case bp_shlib_event: |
c906108c SS |
5598 | if (bs->stop) |
5599 | { | |
5600 | if (bs->print) | |
628fe4e4 | 5601 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5602 | else |
628fe4e4 | 5603 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5604 | } |
5605 | else | |
628fe4e4 | 5606 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5607 | break; |
5608 | case bp_watchpoint: | |
5609 | case bp_hardware_watchpoint: | |
5610 | case bp_read_watchpoint: | |
5611 | case bp_access_watchpoint: | |
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 JK |
5620 | { |
5621 | /* There was a watchpoint, but we're not stopping. | |
5622 | This requires no further action. */ | |
5623 | } | |
c906108c SS |
5624 | break; |
5625 | case bp_longjmp: | |
e2e4d78b | 5626 | case bp_longjmp_call_dummy: |
186c406b | 5627 | case bp_exception: |
0a39bb32 PA |
5628 | if (bs->stop) |
5629 | { | |
5630 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5631 | retval.is_longjmp = bptype != bp_exception; | |
5632 | } | |
5633 | else | |
5634 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5635 | break; |
5636 | case bp_longjmp_resume: | |
186c406b | 5637 | case bp_exception_resume: |
0a39bb32 PA |
5638 | if (bs->stop) |
5639 | { | |
5640 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5641 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5642 | } | |
5643 | else | |
5644 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5645 | break; |
5646 | case bp_step_resume: | |
5647 | if (bs->stop) | |
628fe4e4 JK |
5648 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5649 | else | |
c906108c | 5650 | { |
628fe4e4 JK |
5651 | /* It is for the wrong frame. */ |
5652 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5653 | } |
c906108c | 5654 | break; |
2c03e5be PA |
5655 | case bp_hp_step_resume: |
5656 | if (bs->stop) | |
5657 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5658 | else | |
5659 | { | |
5660 | /* It is for the wrong frame. */ | |
5661 | this_action = BPSTAT_WHAT_SINGLE; | |
5662 | } | |
5663 | break; | |
c906108c | 5664 | case bp_watchpoint_scope: |
c4093a6a | 5665 | case bp_thread_event: |
1900040c | 5666 | case bp_overlay_event: |
0fd8e87f | 5667 | case bp_longjmp_master: |
aa7d318d | 5668 | case bp_std_terminate_master: |
186c406b | 5669 | case bp_exception_master: |
628fe4e4 | 5670 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5671 | break; |
ce78b96d | 5672 | case bp_catchpoint: |
c5aa993b JM |
5673 | if (bs->stop) |
5674 | { | |
5675 | if (bs->print) | |
628fe4e4 | 5676 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5677 | else |
628fe4e4 | 5678 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5679 | } |
5680 | else | |
628fe4e4 JK |
5681 | { |
5682 | /* There was a catchpoint, but we're not stopping. | |
5683 | This requires no further action. */ | |
5684 | } | |
5685 | break; | |
628fe4e4 | 5686 | case bp_jit_event: |
628fe4e4 | 5687 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5688 | break; |
c906108c | 5689 | case bp_call_dummy: |
53a5351d JM |
5690 | /* Make sure the action is stop (silent or noisy), |
5691 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5692 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5693 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5694 | break; |
5695 | case bp_std_terminate: | |
5696 | /* Make sure the action is stop (silent or noisy), | |
5697 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5698 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5699 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5700 | break; |
1042e4c0 | 5701 | case bp_tracepoint: |
7a697b8d | 5702 | case bp_fast_tracepoint: |
0fb4aa4b | 5703 | case bp_static_tracepoint: |
1042e4c0 SS |
5704 | /* Tracepoint hits should not be reported back to GDB, and |
5705 | if one got through somehow, it should have been filtered | |
5706 | out already. */ | |
5707 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5708 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5709 | break; |
5710 | case bp_gnu_ifunc_resolver: | |
5711 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5712 | this_action = BPSTAT_WHAT_SINGLE; | |
5713 | break; | |
5714 | case bp_gnu_ifunc_resolver_return: | |
5715 | /* The breakpoint will be removed, execution will restart from the | |
5716 | PC of the former breakpoint. */ | |
5717 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5718 | break; | |
e7e0cddf SS |
5719 | |
5720 | case bp_dprintf: | |
a11cfd87 HZ |
5721 | if (bs->stop) |
5722 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5723 | else | |
5724 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5725 | break; |
5726 | ||
628fe4e4 JK |
5727 | default: |
5728 | internal_error (__FILE__, __LINE__, | |
5729 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5730 | } |
628fe4e4 | 5731 | |
325fac50 | 5732 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5733 | } |
628fe4e4 | 5734 | |
243a9253 PA |
5735 | return retval; |
5736 | } | |
628fe4e4 | 5737 | |
243a9253 PA |
5738 | void |
5739 | bpstat_run_callbacks (bpstat bs_head) | |
5740 | { | |
5741 | bpstat bs; | |
628fe4e4 | 5742 | |
0e30163f JK |
5743 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5744 | { | |
5745 | struct breakpoint *b = bs->breakpoint_at; | |
5746 | ||
5747 | if (b == NULL) | |
5748 | continue; | |
5749 | switch (b->type) | |
5750 | { | |
243a9253 PA |
5751 | case bp_jit_event: |
5752 | handle_jit_event (); | |
5753 | break; | |
0e30163f JK |
5754 | case bp_gnu_ifunc_resolver: |
5755 | gnu_ifunc_resolver_stop (b); | |
5756 | break; | |
5757 | case bp_gnu_ifunc_resolver_return: | |
5758 | gnu_ifunc_resolver_return_stop (b); | |
5759 | break; | |
5760 | } | |
5761 | } | |
c906108c SS |
5762 | } |
5763 | ||
5764 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5765 | without hardware support). This isn't related to a specific bpstat, | |
5766 | just to things like whether watchpoints are set. */ | |
5767 | ||
c5aa993b | 5768 | int |
fba45db2 | 5769 | bpstat_should_step (void) |
c906108c SS |
5770 | { |
5771 | struct breakpoint *b; | |
cc59ec59 | 5772 | |
c906108c | 5773 | ALL_BREAKPOINTS (b) |
717a8278 | 5774 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5775 | return 1; |
c906108c SS |
5776 | return 0; |
5777 | } | |
5778 | ||
67822962 PA |
5779 | int |
5780 | bpstat_causes_stop (bpstat bs) | |
5781 | { | |
5782 | for (; bs != NULL; bs = bs->next) | |
5783 | if (bs->stop) | |
5784 | return 1; | |
5785 | ||
5786 | return 0; | |
5787 | } | |
5788 | ||
c906108c | 5789 | \f |
c5aa993b | 5790 | |
170b53b2 UW |
5791 | /* Compute a string of spaces suitable to indent the next line |
5792 | so it starts at the position corresponding to the table column | |
5793 | named COL_NAME in the currently active table of UIOUT. */ | |
5794 | ||
5795 | static char * | |
5796 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5797 | { | |
5798 | static char wrap_indent[80]; | |
5799 | int i, total_width, width, align; | |
c5209615 | 5800 | const char *text; |
170b53b2 UW |
5801 | |
5802 | total_width = 0; | |
112e8700 | 5803 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5804 | { |
5805 | if (strcmp (text, col_name) == 0) | |
5806 | { | |
5807 | gdb_assert (total_width < sizeof wrap_indent); | |
5808 | memset (wrap_indent, ' ', total_width); | |
5809 | wrap_indent[total_width] = 0; | |
5810 | ||
5811 | return wrap_indent; | |
5812 | } | |
5813 | ||
5814 | total_width += width + 1; | |
5815 | } | |
5816 | ||
5817 | return NULL; | |
5818 | } | |
5819 | ||
b775012e LM |
5820 | /* Determine if the locations of this breakpoint will have their conditions |
5821 | evaluated by the target, host or a mix of both. Returns the following: | |
5822 | ||
5823 | "host": Host evals condition. | |
5824 | "host or target": Host or Target evals condition. | |
5825 | "target": Target evals condition. | |
5826 | */ | |
5827 | ||
5828 | static const char * | |
5829 | bp_condition_evaluator (struct breakpoint *b) | |
5830 | { | |
5831 | struct bp_location *bl; | |
5832 | char host_evals = 0; | |
5833 | char target_evals = 0; | |
5834 | ||
5835 | if (!b) | |
5836 | return NULL; | |
5837 | ||
5838 | if (!is_breakpoint (b)) | |
5839 | return NULL; | |
5840 | ||
5841 | if (gdb_evaluates_breakpoint_condition_p () | |
5842 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5843 | return condition_evaluation_host; | |
5844 | ||
5845 | for (bl = b->loc; bl; bl = bl->next) | |
5846 | { | |
5847 | if (bl->cond_bytecode) | |
5848 | target_evals++; | |
5849 | else | |
5850 | host_evals++; | |
5851 | } | |
5852 | ||
5853 | if (host_evals && target_evals) | |
5854 | return condition_evaluation_both; | |
5855 | else if (target_evals) | |
5856 | return condition_evaluation_target; | |
5857 | else | |
5858 | return condition_evaluation_host; | |
5859 | } | |
5860 | ||
5861 | /* Determine the breakpoint location's condition evaluator. This is | |
5862 | similar to bp_condition_evaluator, but for locations. */ | |
5863 | ||
5864 | static const char * | |
5865 | bp_location_condition_evaluator (struct bp_location *bl) | |
5866 | { | |
5867 | if (bl && !is_breakpoint (bl->owner)) | |
5868 | return NULL; | |
5869 | ||
5870 | if (gdb_evaluates_breakpoint_condition_p () | |
5871 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5872 | return condition_evaluation_host; | |
5873 | ||
5874 | if (bl && bl->cond_bytecode) | |
5875 | return condition_evaluation_target; | |
5876 | else | |
5877 | return condition_evaluation_host; | |
5878 | } | |
5879 | ||
859825b8 JK |
5880 | /* Print the LOC location out of the list of B->LOC locations. */ |
5881 | ||
170b53b2 UW |
5882 | static void |
5883 | print_breakpoint_location (struct breakpoint *b, | |
5884 | struct bp_location *loc) | |
0d381245 | 5885 | { |
79a45e25 | 5886 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5887 | |
5888 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5889 | |
859825b8 JK |
5890 | if (loc != NULL && loc->shlib_disabled) |
5891 | loc = NULL; | |
5892 | ||
6c95b8df PA |
5893 | if (loc != NULL) |
5894 | set_current_program_space (loc->pspace); | |
5895 | ||
56435ebe | 5896 | if (b->display_canonical) |
d28cd78a | 5897 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5898 | else if (loc && loc->symtab) |
0d381245 | 5899 | { |
4a27f119 KS |
5900 | const struct symbol *sym = loc->symbol; |
5901 | ||
5902 | if (sym == NULL) | |
5903 | sym = find_pc_sect_function (loc->address, loc->section); | |
5904 | ||
0d381245 VP |
5905 | if (sym) |
5906 | { | |
112e8700 SM |
5907 | uiout->text ("in "); |
5908 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5909 | uiout->text (" "); | |
5910 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5911 | uiout->text ("at "); | |
0d381245 | 5912 | } |
112e8700 | 5913 | uiout->field_string ("file", |
05cba821 | 5914 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5915 | uiout->text (":"); |
05cba821 | 5916 | |
112e8700 SM |
5917 | if (uiout->is_mi_like_p ()) |
5918 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5919 | |
112e8700 | 5920 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5921 | } |
859825b8 | 5922 | else if (loc) |
0d381245 | 5923 | { |
d7e74731 | 5924 | string_file stb; |
170b53b2 | 5925 | |
d7e74731 | 5926 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5927 | demangle, ""); |
112e8700 | 5928 | uiout->field_stream ("at", stb); |
0d381245 | 5929 | } |
859825b8 | 5930 | else |
f00aae0f | 5931 | { |
d28cd78a TT |
5932 | uiout->field_string ("pending", |
5933 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5934 | /* If extra_string is available, it could be holding a condition |
5935 | or dprintf arguments. In either case, make sure it is printed, | |
5936 | too, but only for non-MI streams. */ | |
112e8700 | 5937 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5938 | { |
5939 | if (b->type == bp_dprintf) | |
112e8700 | 5940 | uiout->text (","); |
f00aae0f | 5941 | else |
112e8700 SM |
5942 | uiout->text (" "); |
5943 | uiout->text (b->extra_string); | |
f00aae0f KS |
5944 | } |
5945 | } | |
6c95b8df | 5946 | |
b775012e LM |
5947 | if (loc && is_breakpoint (b) |
5948 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5949 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5950 | { | |
112e8700 SM |
5951 | uiout->text (" ("); |
5952 | uiout->field_string ("evaluated-by", | |
b775012e | 5953 | bp_location_condition_evaluator (loc)); |
112e8700 | 5954 | uiout->text (")"); |
b775012e | 5955 | } |
0d381245 VP |
5956 | } |
5957 | ||
269b11a2 PA |
5958 | static const char * |
5959 | bptype_string (enum bptype type) | |
c906108c | 5960 | { |
c4093a6a JM |
5961 | struct ep_type_description |
5962 | { | |
5963 | enum bptype type; | |
a121b7c1 | 5964 | const char *description; |
c4093a6a JM |
5965 | }; |
5966 | static struct ep_type_description bptypes[] = | |
c906108c | 5967 | { |
c5aa993b JM |
5968 | {bp_none, "?deleted?"}, |
5969 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5970 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5971 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5972 | {bp_until, "until"}, |
5973 | {bp_finish, "finish"}, | |
5974 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5975 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5976 | {bp_read_watchpoint, "read watchpoint"}, |
5977 | {bp_access_watchpoint, "acc watchpoint"}, | |
5978 | {bp_longjmp, "longjmp"}, | |
5979 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5980 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5981 | {bp_exception, "exception"}, |
5982 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5983 | {bp_step_resume, "step resume"}, |
2c03e5be | 5984 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5985 | {bp_watchpoint_scope, "watchpoint scope"}, |
5986 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5987 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5988 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5989 | {bp_thread_event, "thread events"}, |
1900040c | 5990 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5991 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5992 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5993 | {bp_exception_master, "exception master"}, |
ce78b96d | 5994 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5995 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5996 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5997 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5998 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5999 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6000 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6001 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6002 | }; |
269b11a2 PA |
6003 | |
6004 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6005 | || ((int) type != bptypes[(int) type].type)) | |
6006 | internal_error (__FILE__, __LINE__, | |
6007 | _("bptypes table does not describe type #%d."), | |
6008 | (int) type); | |
6009 | ||
6010 | return bptypes[(int) type].description; | |
6011 | } | |
6012 | ||
998580f1 MK |
6013 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6014 | For CLI, prefix the list with the string 'inf'. */ | |
6015 | ||
6016 | static void | |
6017 | output_thread_groups (struct ui_out *uiout, | |
6018 | const char *field_name, | |
5c632425 | 6019 | const std::vector<int> &inf_nums, |
998580f1 MK |
6020 | int mi_only) |
6021 | { | |
112e8700 | 6022 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6023 | |
6024 | /* For backward compatibility, don't display inferiors in CLI unless | |
6025 | there are several. Always display them for MI. */ | |
6026 | if (!is_mi && mi_only) | |
6027 | return; | |
6028 | ||
10f489e5 | 6029 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6030 | |
5c632425 | 6031 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6032 | { |
6033 | if (is_mi) | |
6034 | { | |
6035 | char mi_group[10]; | |
6036 | ||
5c632425 | 6037 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6038 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6039 | } |
6040 | else | |
6041 | { | |
6042 | if (i == 0) | |
112e8700 | 6043 | uiout->text (" inf "); |
998580f1 | 6044 | else |
112e8700 | 6045 | uiout->text (", "); |
998580f1 | 6046 | |
5c632425 | 6047 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6048 | } |
6049 | } | |
998580f1 MK |
6050 | } |
6051 | ||
269b11a2 PA |
6052 | /* Print B to gdb_stdout. */ |
6053 | ||
6054 | static void | |
6055 | print_one_breakpoint_location (struct breakpoint *b, | |
6056 | struct bp_location *loc, | |
6057 | int loc_number, | |
6058 | struct bp_location **last_loc, | |
269b11a2 PA |
6059 | int allflag) |
6060 | { | |
6061 | struct command_line *l; | |
c2c6d25f | 6062 | static char bpenables[] = "nynny"; |
c906108c | 6063 | |
79a45e25 | 6064 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6065 | int header_of_multiple = 0; |
6066 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6067 | struct value_print_options opts; |
6068 | ||
6069 | get_user_print_options (&opts); | |
0d381245 VP |
6070 | |
6071 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6072 | /* See comment in print_one_breakpoint concerning treatment of |
6073 | breakpoints with single disabled location. */ | |
0d381245 VP |
6074 | if (loc == NULL |
6075 | && (b->loc != NULL | |
6076 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6077 | header_of_multiple = 1; | |
6078 | if (loc == NULL) | |
6079 | loc = b->loc; | |
6080 | ||
c4093a6a JM |
6081 | annotate_record (); |
6082 | ||
6083 | /* 1 */ | |
6084 | annotate_field (0); | |
0d381245 VP |
6085 | if (part_of_multiple) |
6086 | { | |
6087 | char *formatted; | |
0c6773c1 | 6088 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6089 | uiout->field_string ("number", formatted); |
0d381245 VP |
6090 | xfree (formatted); |
6091 | } | |
6092 | else | |
6093 | { | |
112e8700 | 6094 | uiout->field_int ("number", b->number); |
0d381245 | 6095 | } |
c4093a6a JM |
6096 | |
6097 | /* 2 */ | |
6098 | annotate_field (1); | |
0d381245 | 6099 | if (part_of_multiple) |
112e8700 | 6100 | uiout->field_skip ("type"); |
269b11a2 | 6101 | else |
112e8700 | 6102 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6103 | |
6104 | /* 3 */ | |
6105 | annotate_field (2); | |
0d381245 | 6106 | if (part_of_multiple) |
112e8700 | 6107 | uiout->field_skip ("disp"); |
0d381245 | 6108 | else |
112e8700 | 6109 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6110 | |
c4093a6a JM |
6111 | |
6112 | /* 4 */ | |
6113 | annotate_field (3); | |
0d381245 | 6114 | if (part_of_multiple) |
112e8700 | 6115 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6116 | else |
112e8700 SM |
6117 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6118 | uiout->spaces (2); | |
0d381245 | 6119 | |
c4093a6a JM |
6120 | |
6121 | /* 5 and 6 */ | |
3086aeae | 6122 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6123 | { |
4a64f543 MS |
6124 | /* Although the print_one can possibly print all locations, |
6125 | calling it here is not likely to get any nice result. So, | |
6126 | make sure there's just one location. */ | |
0d381245 | 6127 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6128 | b->ops->print_one (b, last_loc); |
0d381245 | 6129 | } |
3086aeae DJ |
6130 | else |
6131 | switch (b->type) | |
6132 | { | |
6133 | case bp_none: | |
6134 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6135 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6136 | break; |
c906108c | 6137 | |
3086aeae DJ |
6138 | case bp_watchpoint: |
6139 | case bp_hardware_watchpoint: | |
6140 | case bp_read_watchpoint: | |
6141 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6142 | { |
6143 | struct watchpoint *w = (struct watchpoint *) b; | |
6144 | ||
6145 | /* Field 4, the address, is omitted (which makes the columns | |
6146 | not line up too nicely with the headers, but the effect | |
6147 | is relatively readable). */ | |
6148 | if (opts.addressprint) | |
112e8700 | 6149 | uiout->field_skip ("addr"); |
3a5c3e22 | 6150 | annotate_field (5); |
112e8700 | 6151 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6152 | } |
3086aeae DJ |
6153 | break; |
6154 | ||
3086aeae DJ |
6155 | case bp_breakpoint: |
6156 | case bp_hardware_breakpoint: | |
7c16b83e | 6157 | case bp_single_step: |
3086aeae DJ |
6158 | case bp_until: |
6159 | case bp_finish: | |
6160 | case bp_longjmp: | |
6161 | case bp_longjmp_resume: | |
e2e4d78b | 6162 | case bp_longjmp_call_dummy: |
186c406b TT |
6163 | case bp_exception: |
6164 | case bp_exception_resume: | |
3086aeae | 6165 | case bp_step_resume: |
2c03e5be | 6166 | case bp_hp_step_resume: |
3086aeae DJ |
6167 | case bp_watchpoint_scope: |
6168 | case bp_call_dummy: | |
aa7d318d | 6169 | case bp_std_terminate: |
3086aeae DJ |
6170 | case bp_shlib_event: |
6171 | case bp_thread_event: | |
6172 | case bp_overlay_event: | |
0fd8e87f | 6173 | case bp_longjmp_master: |
aa7d318d | 6174 | case bp_std_terminate_master: |
186c406b | 6175 | case bp_exception_master: |
1042e4c0 | 6176 | case bp_tracepoint: |
7a697b8d | 6177 | case bp_fast_tracepoint: |
0fb4aa4b | 6178 | case bp_static_tracepoint: |
e7e0cddf | 6179 | case bp_dprintf: |
4efc6507 | 6180 | case bp_jit_event: |
0e30163f JK |
6181 | case bp_gnu_ifunc_resolver: |
6182 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6183 | if (opts.addressprint) |
3086aeae DJ |
6184 | { |
6185 | annotate_field (4); | |
54e52265 | 6186 | if (header_of_multiple) |
112e8700 | 6187 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6188 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6189 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6190 | else |
112e8700 | 6191 | uiout->field_core_addr ("addr", |
5af949e3 | 6192 | loc->gdbarch, loc->address); |
3086aeae DJ |
6193 | } |
6194 | annotate_field (5); | |
0d381245 | 6195 | if (!header_of_multiple) |
170b53b2 | 6196 | print_breakpoint_location (b, loc); |
0d381245 | 6197 | if (b->loc) |
a6d9a66e | 6198 | *last_loc = b->loc; |
3086aeae DJ |
6199 | break; |
6200 | } | |
c906108c | 6201 | |
6c95b8df | 6202 | |
998580f1 | 6203 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6204 | { |
6205 | struct inferior *inf; | |
5c632425 | 6206 | std::vector<int> inf_nums; |
998580f1 | 6207 | int mi_only = 1; |
6c95b8df | 6208 | |
998580f1 | 6209 | ALL_INFERIORS (inf) |
6c95b8df PA |
6210 | { |
6211 | if (inf->pspace == loc->pspace) | |
5c632425 | 6212 | inf_nums.push_back (inf->num); |
6c95b8df | 6213 | } |
998580f1 MK |
6214 | |
6215 | /* For backward compatibility, don't display inferiors in CLI unless | |
6216 | there are several. Always display for MI. */ | |
6217 | if (allflag | |
6218 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6219 | && (number_of_program_spaces () > 1 | |
6220 | || number_of_inferiors () > 1) | |
6221 | /* LOC is for existing B, it cannot be in | |
6222 | moribund_locations and thus having NULL OWNER. */ | |
6223 | && loc->owner->type != bp_catchpoint)) | |
6224 | mi_only = 0; | |
5c632425 | 6225 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6226 | } |
6227 | ||
4a306c9a | 6228 | if (!part_of_multiple) |
c4093a6a | 6229 | { |
4a306c9a JB |
6230 | if (b->thread != -1) |
6231 | { | |
6232 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6233 | "stop only in" line a little further down. */ |
112e8700 SM |
6234 | uiout->text (" thread "); |
6235 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6236 | } |
6237 | else if (b->task != 0) | |
6238 | { | |
112e8700 SM |
6239 | uiout->text (" task "); |
6240 | uiout->field_int ("task", b->task); | |
4a306c9a | 6241 | } |
c4093a6a | 6242 | } |
f1310107 | 6243 | |
112e8700 | 6244 | uiout->text ("\n"); |
f1310107 | 6245 | |
348d480f | 6246 | if (!part_of_multiple) |
f1310107 TJB |
6247 | b->ops->print_one_detail (b, uiout); |
6248 | ||
0d381245 | 6249 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6250 | { |
6251 | annotate_field (6); | |
112e8700 | 6252 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6253 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6254 | the frame ID. */ |
112e8700 | 6255 | uiout->field_core_addr ("frame", |
5af949e3 | 6256 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6257 | uiout->text ("\n"); |
c4093a6a JM |
6258 | } |
6259 | ||
28010a5d | 6260 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6261 | { |
6262 | annotate_field (7); | |
d77f58be | 6263 | if (is_tracepoint (b)) |
112e8700 | 6264 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6265 | else |
112e8700 SM |
6266 | uiout->text ("\tstop only if "); |
6267 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6268 | |
6269 | /* Print whether the target is doing the breakpoint's condition | |
6270 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6271 | if (is_breakpoint (b) | |
6272 | && breakpoint_condition_evaluation_mode () | |
6273 | == condition_evaluation_target) | |
6274 | { | |
112e8700 SM |
6275 | uiout->text (" ("); |
6276 | uiout->field_string ("evaluated-by", | |
b775012e | 6277 | bp_condition_evaluator (b)); |
112e8700 | 6278 | uiout->text (" evals)"); |
b775012e | 6279 | } |
112e8700 | 6280 | uiout->text ("\n"); |
0101ce28 JJ |
6281 | } |
6282 | ||
0d381245 | 6283 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6284 | { |
4a64f543 | 6285 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6286 | uiout->text ("\tstop only in thread "); |
6287 | if (uiout->is_mi_like_p ()) | |
6288 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6289 | else |
6290 | { | |
6291 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6292 | ||
112e8700 | 6293 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6294 | } |
112e8700 | 6295 | uiout->text ("\n"); |
c4093a6a JM |
6296 | } |
6297 | ||
556ec64d YQ |
6298 | if (!part_of_multiple) |
6299 | { | |
6300 | if (b->hit_count) | |
31f56a27 YQ |
6301 | { |
6302 | /* FIXME should make an annotation for this. */ | |
6303 | if (is_catchpoint (b)) | |
112e8700 | 6304 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6305 | else if (is_tracepoint (b)) |
112e8700 | 6306 | uiout->text ("\ttracepoint"); |
31f56a27 | 6307 | else |
112e8700 SM |
6308 | uiout->text ("\tbreakpoint"); |
6309 | uiout->text (" already hit "); | |
6310 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6311 | if (b->hit_count == 1) |
112e8700 | 6312 | uiout->text (" time\n"); |
31f56a27 | 6313 | else |
112e8700 | 6314 | uiout->text (" times\n"); |
31f56a27 | 6315 | } |
556ec64d YQ |
6316 | else |
6317 | { | |
31f56a27 | 6318 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6319 | if (uiout->is_mi_like_p ()) |
6320 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6321 | } |
6322 | } | |
8b93c638 | 6323 | |
0d381245 | 6324 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6325 | { |
6326 | annotate_field (8); | |
112e8700 SM |
6327 | uiout->text ("\tignore next "); |
6328 | uiout->field_int ("ignore", b->ignore_count); | |
6329 | uiout->text (" hits\n"); | |
c4093a6a | 6330 | } |
059fb39f | 6331 | |
816338b5 SS |
6332 | /* Note that an enable count of 1 corresponds to "enable once" |
6333 | behavior, which is reported by the combination of enablement and | |
6334 | disposition, so we don't need to mention it here. */ | |
6335 | if (!part_of_multiple && b->enable_count > 1) | |
6336 | { | |
6337 | annotate_field (8); | |
112e8700 | 6338 | uiout->text ("\tdisable after "); |
816338b5 SS |
6339 | /* Tweak the wording to clarify that ignore and enable counts |
6340 | are distinct, and have additive effect. */ | |
6341 | if (b->ignore_count) | |
112e8700 | 6342 | uiout->text ("additional "); |
816338b5 | 6343 | else |
112e8700 SM |
6344 | uiout->text ("next "); |
6345 | uiout->field_int ("enable", b->enable_count); | |
6346 | uiout->text (" hits\n"); | |
816338b5 SS |
6347 | } |
6348 | ||
f196051f SS |
6349 | if (!part_of_multiple && is_tracepoint (b)) |
6350 | { | |
6351 | struct tracepoint *tp = (struct tracepoint *) b; | |
6352 | ||
6353 | if (tp->traceframe_usage) | |
6354 | { | |
112e8700 SM |
6355 | uiout->text ("\ttrace buffer usage "); |
6356 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6357 | uiout->text (" bytes\n"); | |
f196051f SS |
6358 | } |
6359 | } | |
d3ce09f5 | 6360 | |
d1b0a7bf | 6361 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6362 | if (!part_of_multiple && l) |
c4093a6a JM |
6363 | { |
6364 | annotate_field (9); | |
2e783024 | 6365 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6366 | print_command_lines (uiout, l, 4); |
c4093a6a | 6367 | } |
d24317b4 | 6368 | |
d9b3f62e | 6369 | if (is_tracepoint (b)) |
1042e4c0 | 6370 | { |
d9b3f62e PA |
6371 | struct tracepoint *t = (struct tracepoint *) b; |
6372 | ||
6373 | if (!part_of_multiple && t->pass_count) | |
6374 | { | |
6375 | annotate_field (10); | |
112e8700 SM |
6376 | uiout->text ("\tpass count "); |
6377 | uiout->field_int ("pass", t->pass_count); | |
6378 | uiout->text (" \n"); | |
d9b3f62e | 6379 | } |
f2a8bc8a YQ |
6380 | |
6381 | /* Don't display it when tracepoint or tracepoint location is | |
6382 | pending. */ | |
6383 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6384 | { | |
6385 | annotate_field (11); | |
6386 | ||
112e8700 SM |
6387 | if (uiout->is_mi_like_p ()) |
6388 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6389 | loc->inserted ? "y" : "n"); |
6390 | else | |
6391 | { | |
6392 | if (loc->inserted) | |
112e8700 | 6393 | uiout->text ("\t"); |
f2a8bc8a | 6394 | else |
112e8700 SM |
6395 | uiout->text ("\tnot "); |
6396 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6397 | } |
6398 | } | |
1042e4c0 SS |
6399 | } |
6400 | ||
112e8700 | 6401 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6402 | { |
3a5c3e22 PA |
6403 | if (is_watchpoint (b)) |
6404 | { | |
6405 | struct watchpoint *w = (struct watchpoint *) b; | |
6406 | ||
112e8700 | 6407 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6408 | } |
f00aae0f | 6409 | else if (b->location != NULL |
d28cd78a | 6410 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6411 | uiout->field_string ("original-location", |
d28cd78a | 6412 | event_location_to_string (b->location.get ())); |
d24317b4 | 6413 | } |
c4093a6a | 6414 | } |
c5aa993b | 6415 | |
0d381245 VP |
6416 | static void |
6417 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6418 | struct bp_location **last_loc, |
6c95b8df | 6419 | int allflag) |
0d381245 | 6420 | { |
79a45e25 | 6421 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6422 | |
2e783024 TT |
6423 | { |
6424 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6425 | |
2e783024 TT |
6426 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6427 | } | |
0d381245 VP |
6428 | |
6429 | /* If this breakpoint has custom print function, | |
6430 | it's already printed. Otherwise, print individual | |
6431 | locations, if any. */ | |
6432 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6433 | { | |
4a64f543 MS |
6434 | /* If breakpoint has a single location that is disabled, we |
6435 | print it as if it had several locations, since otherwise it's | |
6436 | hard to represent "breakpoint enabled, location disabled" | |
6437 | situation. | |
6438 | ||
6439 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6440 | internally, that's not a property exposed to user. */ |
0d381245 | 6441 | if (b->loc |
a5606eee | 6442 | && !is_hardware_watchpoint (b) |
8d3788bd | 6443 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6444 | { |
6445 | struct bp_location *loc; | |
6446 | int n = 1; | |
8d3788bd | 6447 | |
0d381245 | 6448 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6449 | { |
2e783024 | 6450 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6451 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6452 | } |
0d381245 VP |
6453 | } |
6454 | } | |
6455 | } | |
6456 | ||
a6d9a66e UW |
6457 | static int |
6458 | breakpoint_address_bits (struct breakpoint *b) | |
6459 | { | |
6460 | int print_address_bits = 0; | |
6461 | struct bp_location *loc; | |
6462 | ||
c6d81124 PA |
6463 | /* Software watchpoints that aren't watching memory don't have an |
6464 | address to print. */ | |
6465 | if (is_no_memory_software_watchpoint (b)) | |
6466 | return 0; | |
6467 | ||
a6d9a66e UW |
6468 | for (loc = b->loc; loc; loc = loc->next) |
6469 | { | |
c7437ca6 PA |
6470 | int addr_bit; |
6471 | ||
c7437ca6 | 6472 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6473 | if (addr_bit > print_address_bits) |
6474 | print_address_bits = addr_bit; | |
6475 | } | |
6476 | ||
6477 | return print_address_bits; | |
6478 | } | |
0d381245 | 6479 | |
65630365 | 6480 | /* See breakpoint.h. */ |
c5aa993b | 6481 | |
65630365 PA |
6482 | void |
6483 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6484 | { |
a6d9a66e | 6485 | struct bp_location *dummy_loc = NULL; |
65630365 | 6486 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6487 | } |
c5aa993b | 6488 | |
09d682a4 TT |
6489 | /* Return true if this breakpoint was set by the user, false if it is |
6490 | internal or momentary. */ | |
6491 | ||
6492 | int | |
6493 | user_breakpoint_p (struct breakpoint *b) | |
6494 | { | |
46c6471b | 6495 | return b->number > 0; |
09d682a4 TT |
6496 | } |
6497 | ||
93daf339 TT |
6498 | /* See breakpoint.h. */ |
6499 | ||
6500 | int | |
6501 | pending_breakpoint_p (struct breakpoint *b) | |
6502 | { | |
6503 | return b->loc == NULL; | |
6504 | } | |
6505 | ||
7f3b0473 | 6506 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6507 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6508 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6509 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6510 | ones for which it returns non-zero. Return the total number of | |
6511 | breakpoints listed. */ | |
c906108c | 6512 | |
d77f58be | 6513 | static int |
4495129a | 6514 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6515 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6516 | { |
52f0bd74 | 6517 | struct breakpoint *b; |
a6d9a66e | 6518 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6519 | int nr_printable_breakpoints; |
79a45b7d | 6520 | struct value_print_options opts; |
a6d9a66e | 6521 | int print_address_bits = 0; |
269b11a2 | 6522 | int print_type_col_width = 14; |
79a45e25 | 6523 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6524 | |
79a45b7d TT |
6525 | get_user_print_options (&opts); |
6526 | ||
4a64f543 MS |
6527 | /* Compute the number of rows in the table, as well as the size |
6528 | required for address fields. */ | |
7f3b0473 AC |
6529 | nr_printable_breakpoints = 0; |
6530 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6531 | { |
6532 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6533 | if (filter && !filter (b)) | |
6534 | continue; | |
6535 | ||
6536 | /* If we have an "args" string, it is a list of breakpoints to | |
6537 | accept. Skip the others. */ | |
6538 | if (args != NULL && *args != '\0') | |
6539 | { | |
6540 | if (allflag && parse_and_eval_long (args) != b->number) | |
6541 | continue; | |
6542 | if (!allflag && !number_is_in_list (args, b->number)) | |
6543 | continue; | |
6544 | } | |
269b11a2 | 6545 | |
e5a67952 MS |
6546 | if (allflag || user_breakpoint_p (b)) |
6547 | { | |
6548 | int addr_bit, type_len; | |
a6d9a66e | 6549 | |
e5a67952 MS |
6550 | addr_bit = breakpoint_address_bits (b); |
6551 | if (addr_bit > print_address_bits) | |
6552 | print_address_bits = addr_bit; | |
269b11a2 | 6553 | |
e5a67952 MS |
6554 | type_len = strlen (bptype_string (b->type)); |
6555 | if (type_len > print_type_col_width) | |
6556 | print_type_col_width = type_len; | |
6557 | ||
6558 | nr_printable_breakpoints++; | |
6559 | } | |
6560 | } | |
7f3b0473 | 6561 | |
4a2b031d TT |
6562 | { |
6563 | ui_out_emit_table table_emitter (uiout, | |
6564 | opts.addressprint ? 6 : 5, | |
6565 | nr_printable_breakpoints, | |
6566 | "BreakpointTable"); | |
6567 | ||
6568 | if (nr_printable_breakpoints > 0) | |
6569 | annotate_breakpoints_headers (); | |
6570 | if (nr_printable_breakpoints > 0) | |
6571 | annotate_field (0); | |
6572 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6573 | if (nr_printable_breakpoints > 0) | |
6574 | annotate_field (1); | |
6575 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6576 | if (nr_printable_breakpoints > 0) | |
6577 | annotate_field (2); | |
6578 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6579 | if (nr_printable_breakpoints > 0) | |
6580 | annotate_field (3); | |
6581 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6582 | if (opts.addressprint) | |
6583 | { | |
6584 | if (nr_printable_breakpoints > 0) | |
6585 | annotate_field (4); | |
6586 | if (print_address_bits <= 32) | |
6587 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6588 | else | |
6589 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6590 | } | |
6591 | if (nr_printable_breakpoints > 0) | |
6592 | annotate_field (5); | |
6593 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6594 | uiout->table_body (); | |
6595 | if (nr_printable_breakpoints > 0) | |
6596 | annotate_breakpoints_table (); | |
6597 | ||
6598 | ALL_BREAKPOINTS (b) | |
6599 | { | |
6600 | QUIT; | |
6601 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6602 | if (filter && !filter (b)) | |
6603 | continue; | |
e5a67952 | 6604 | |
4a2b031d TT |
6605 | /* If we have an "args" string, it is a list of breakpoints to |
6606 | accept. Skip the others. */ | |
e5a67952 | 6607 | |
4a2b031d TT |
6608 | if (args != NULL && *args != '\0') |
6609 | { | |
6610 | if (allflag) /* maintenance info breakpoint */ | |
6611 | { | |
6612 | if (parse_and_eval_long (args) != b->number) | |
6613 | continue; | |
6614 | } | |
6615 | else /* all others */ | |
6616 | { | |
6617 | if (!number_is_in_list (args, b->number)) | |
6618 | continue; | |
6619 | } | |
6620 | } | |
6621 | /* We only print out user settable breakpoints unless the | |
6622 | allflag is set. */ | |
6623 | if (allflag || user_breakpoint_p (b)) | |
6624 | print_one_breakpoint (b, &last_loc, allflag); | |
6625 | } | |
6626 | } | |
698384cd | 6627 | |
7f3b0473 | 6628 | if (nr_printable_breakpoints == 0) |
c906108c | 6629 | { |
4a64f543 MS |
6630 | /* If there's a filter, let the caller decide how to report |
6631 | empty list. */ | |
d77f58be SS |
6632 | if (!filter) |
6633 | { | |
e5a67952 | 6634 | if (args == NULL || *args == '\0') |
112e8700 | 6635 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6636 | else |
112e8700 | 6637 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6638 | args); |
d77f58be | 6639 | } |
c906108c SS |
6640 | } |
6641 | else | |
c4093a6a | 6642 | { |
a6d9a66e UW |
6643 | if (last_loc && !server_command) |
6644 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6645 | } |
c906108c | 6646 | |
4a64f543 | 6647 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6648 | there have been breakpoints? */ |
c906108c | 6649 | annotate_breakpoints_table_end (); |
d77f58be SS |
6650 | |
6651 | return nr_printable_breakpoints; | |
c906108c SS |
6652 | } |
6653 | ||
ad443146 SS |
6654 | /* Display the value of default-collect in a way that is generally |
6655 | compatible with the breakpoint list. */ | |
6656 | ||
6657 | static void | |
6658 | default_collect_info (void) | |
6659 | { | |
79a45e25 PA |
6660 | struct ui_out *uiout = current_uiout; |
6661 | ||
ad443146 SS |
6662 | /* If it has no value (which is frequently the case), say nothing; a |
6663 | message like "No default-collect." gets in user's face when it's | |
6664 | not wanted. */ | |
6665 | if (!*default_collect) | |
6666 | return; | |
6667 | ||
6668 | /* The following phrase lines up nicely with per-tracepoint collect | |
6669 | actions. */ | |
112e8700 SM |
6670 | uiout->text ("default collect "); |
6671 | uiout->field_string ("default-collect", default_collect); | |
6672 | uiout->text (" \n"); | |
ad443146 SS |
6673 | } |
6674 | ||
c906108c | 6675 | static void |
0b39b52e | 6676 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6677 | { |
e5a67952 | 6678 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6679 | |
6680 | default_collect_info (); | |
d77f58be SS |
6681 | } |
6682 | ||
6683 | static void | |
1d12d88f | 6684 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6685 | { |
e5a67952 | 6686 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6687 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6688 | |
6689 | if (num_printed == 0) | |
6690 | { | |
e5a67952 | 6691 | if (args == NULL || *args == '\0') |
112e8700 | 6692 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6693 | else |
112e8700 | 6694 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6695 | } |
c906108c SS |
6696 | } |
6697 | ||
7a292a7a | 6698 | static void |
4495129a | 6699 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6700 | { |
e5a67952 | 6701 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6702 | |
6703 | default_collect_info (); | |
c906108c SS |
6704 | } |
6705 | ||
0d381245 | 6706 | static int |
714835d5 | 6707 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6708 | struct program_space *pspace, |
714835d5 | 6709 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6710 | { |
6711 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6712 | |
0d381245 VP |
6713 | for (; bl; bl = bl->next) |
6714 | { | |
6c95b8df PA |
6715 | if (bl->pspace == pspace |
6716 | && bl->address == pc | |
0d381245 VP |
6717 | && (!overlay_debugging || bl->section == section)) |
6718 | return 1; | |
6719 | } | |
6720 | return 0; | |
6721 | } | |
6722 | ||
672f9b60 | 6723 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6724 | concerns with logical breakpoints, so we match program spaces, not |
6725 | address spaces. */ | |
c906108c SS |
6726 | |
6727 | static void | |
6c95b8df PA |
6728 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6729 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6730 | struct obj_section *section, int thread) |
c906108c | 6731 | { |
52f0bd74 AC |
6732 | int others = 0; |
6733 | struct breakpoint *b; | |
c906108c SS |
6734 | |
6735 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6736 | others += (user_breakpoint_p (b) |
6737 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6738 | if (others > 0) |
6739 | { | |
a3f17187 AC |
6740 | if (others == 1) |
6741 | printf_filtered (_("Note: breakpoint ")); | |
6742 | else /* if (others == ???) */ | |
6743 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6744 | ALL_BREAKPOINTS (b) |
672f9b60 | 6745 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6746 | { |
6747 | others--; | |
6748 | printf_filtered ("%d", b->number); | |
6749 | if (b->thread == -1 && thread != -1) | |
6750 | printf_filtered (" (all threads)"); | |
6751 | else if (b->thread != -1) | |
6752 | printf_filtered (" (thread %d)", b->thread); | |
6753 | printf_filtered ("%s%s ", | |
059fb39f | 6754 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6755 | || b->enable_state == bp_call_disabled) |
0d381245 | 6756 | ? " (disabled)" |
0d381245 VP |
6757 | : ""), |
6758 | (others > 1) ? "," | |
6759 | : ((others == 1) ? " and" : "")); | |
6760 | } | |
a3f17187 | 6761 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6762 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6763 | printf_filtered (".\n"); |
6764 | } | |
6765 | } | |
6766 | \f | |
c906108c | 6767 | |
e4f237da | 6768 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6769 | BPT locations. For some breakpoint types, the locations' address members |
6770 | are irrelevant and it makes no sense to attempt to compare them to other | |
6771 | addresses (or use them for any other purpose either). | |
e4f237da | 6772 | |
4a64f543 | 6773 | More specifically, each of the following breakpoint types will |
244558af | 6774 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6775 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6776 | breakpoint location at address zero: |
e4f237da KB |
6777 | |
6778 | bp_watchpoint | |
2d134ed3 PA |
6779 | bp_catchpoint |
6780 | ||
6781 | */ | |
e4f237da KB |
6782 | |
6783 | static int | |
6784 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6785 | { | |
6786 | enum bptype type = bpt->type; | |
6787 | ||
2d134ed3 PA |
6788 | return (type != bp_watchpoint && type != bp_catchpoint); |
6789 | } | |
6790 | ||
6791 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6792 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6793 | ||
6794 | static int | |
4a64f543 MS |
6795 | watchpoint_locations_match (struct bp_location *loc1, |
6796 | struct bp_location *loc2) | |
2d134ed3 | 6797 | { |
3a5c3e22 PA |
6798 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6799 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6800 | ||
6801 | /* Both of them must exist. */ | |
6802 | gdb_assert (w1 != NULL); | |
6803 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6804 | |
4a64f543 MS |
6805 | /* If the target can evaluate the condition expression in hardware, |
6806 | then we we need to insert both watchpoints even if they are at | |
6807 | the same place. Otherwise the watchpoint will only trigger when | |
6808 | the condition of whichever watchpoint was inserted evaluates to | |
6809 | true, not giving a chance for GDB to check the condition of the | |
6810 | other watchpoint. */ | |
3a5c3e22 | 6811 | if ((w1->cond_exp |
4a64f543 MS |
6812 | && target_can_accel_watchpoint_condition (loc1->address, |
6813 | loc1->length, | |
0cf6dd15 | 6814 | loc1->watchpoint_type, |
4d01a485 | 6815 | w1->cond_exp.get ())) |
3a5c3e22 | 6816 | || (w2->cond_exp |
4a64f543 MS |
6817 | && target_can_accel_watchpoint_condition (loc2->address, |
6818 | loc2->length, | |
0cf6dd15 | 6819 | loc2->watchpoint_type, |
4d01a485 | 6820 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6821 | return 0; |
6822 | ||
85d721b8 PA |
6823 | /* Note that this checks the owner's type, not the location's. In |
6824 | case the target does not support read watchpoints, but does | |
6825 | support access watchpoints, we'll have bp_read_watchpoint | |
6826 | watchpoints with hw_access locations. Those should be considered | |
6827 | duplicates of hw_read locations. The hw_read locations will | |
6828 | become hw_access locations later. */ | |
2d134ed3 PA |
6829 | return (loc1->owner->type == loc2->owner->type |
6830 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6831 | && loc1->address == loc2->address | |
6832 | && loc1->length == loc2->length); | |
e4f237da KB |
6833 | } |
6834 | ||
31e77af2 | 6835 | /* See breakpoint.h. */ |
6c95b8df | 6836 | |
31e77af2 | 6837 | int |
accd0bcd YQ |
6838 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6839 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6840 | { |
f5656ead | 6841 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6842 | || aspace1 == aspace2) |
6843 | && addr1 == addr2); | |
6844 | } | |
6845 | ||
f1310107 TJB |
6846 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6847 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6848 | matches ASPACE2. On targets that have global breakpoints, the address | |
6849 | space doesn't really matter. */ | |
6850 | ||
6851 | static int | |
accd0bcd YQ |
6852 | breakpoint_address_match_range (const address_space *aspace1, |
6853 | CORE_ADDR addr1, | |
6854 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6855 | CORE_ADDR addr2) |
6856 | { | |
f5656ead | 6857 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6858 | || aspace1 == aspace2) |
6859 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6860 | } | |
6861 | ||
6862 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6863 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6864 | matches the breakpoint's address space. On targets that have global | |
6865 | breakpoints, the address space doesn't really matter. */ | |
6866 | ||
6867 | static int | |
6868 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6869 | const address_space *aspace, |
f1310107 TJB |
6870 | CORE_ADDR addr) |
6871 | { | |
6872 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6873 | aspace, addr) | |
6874 | || (bl->length | |
6875 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6876 | bl->address, bl->length, | |
6877 | aspace, addr))); | |
6878 | } | |
6879 | ||
d35ae833 PA |
6880 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6881 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6882 | match happens only if ASPACE matches the breakpoint's address | |
6883 | space. On targets that have global breakpoints, the address space | |
6884 | doesn't really matter. */ | |
6885 | ||
6886 | static int | |
6887 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6888 | const address_space *aspace, |
d35ae833 PA |
6889 | CORE_ADDR addr, int len) |
6890 | { | |
6891 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6892 | || bl->pspace->aspace == aspace) | |
6893 | { | |
6894 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6895 | ||
6896 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6897 | return 1; | |
6898 | } | |
6899 | return 0; | |
6900 | } | |
6901 | ||
1e4d1764 YQ |
6902 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6903 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6904 | true, otherwise returns false. */ | |
6905 | ||
6906 | static int | |
6907 | tracepoint_locations_match (struct bp_location *loc1, | |
6908 | struct bp_location *loc2) | |
6909 | { | |
6910 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6911 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6912 | locations at the same address of different tracepoints are regarded as | |
6913 | different locations. */ | |
6914 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6915 | else | |
6916 | return 0; | |
6917 | } | |
6918 | ||
2d134ed3 PA |
6919 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6920 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6921 | represent the same location. */ | |
6922 | ||
6923 | static int | |
4a64f543 MS |
6924 | breakpoint_locations_match (struct bp_location *loc1, |
6925 | struct bp_location *loc2) | |
2d134ed3 | 6926 | { |
2bdf28a0 JK |
6927 | int hw_point1, hw_point2; |
6928 | ||
6929 | /* Both of them must not be in moribund_locations. */ | |
6930 | gdb_assert (loc1->owner != NULL); | |
6931 | gdb_assert (loc2->owner != NULL); | |
6932 | ||
6933 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6934 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6935 | |
6936 | if (hw_point1 != hw_point2) | |
6937 | return 0; | |
6938 | else if (hw_point1) | |
6939 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6940 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6941 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6942 | else |
f1310107 TJB |
6943 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6944 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6945 | loc2->pspace->aspace, loc2->address) | |
6946 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6947 | } |
6948 | ||
76897487 KB |
6949 | static void |
6950 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6951 | int bnum, int have_bnum) | |
6952 | { | |
f63fbe86 MS |
6953 | /* The longest string possibly returned by hex_string_custom |
6954 | is 50 chars. These must be at least that big for safety. */ | |
6955 | char astr1[64]; | |
6956 | char astr2[64]; | |
76897487 | 6957 | |
bb599908 PH |
6958 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6959 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6960 | if (have_bnum) |
8a3fe4f8 | 6961 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6962 | bnum, astr1, astr2); |
6963 | else | |
8a3fe4f8 | 6964 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6965 | } |
6966 | ||
4a64f543 MS |
6967 | /* Adjust a breakpoint's address to account for architectural |
6968 | constraints on breakpoint placement. Return the adjusted address. | |
6969 | Note: Very few targets require this kind of adjustment. For most | |
6970 | targets, this function is simply the identity function. */ | |
76897487 KB |
6971 | |
6972 | static CORE_ADDR | |
a6d9a66e UW |
6973 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6974 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6975 | { |
a0de8c21 YQ |
6976 | if (bptype == bp_watchpoint |
6977 | || bptype == bp_hardware_watchpoint | |
6978 | || bptype == bp_read_watchpoint | |
6979 | || bptype == bp_access_watchpoint | |
6980 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6981 | { |
6982 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6983 | have their addresses modified. */ | |
6984 | return bpaddr; | |
6985 | } | |
7c16b83e PA |
6986 | else if (bptype == bp_single_step) |
6987 | { | |
6988 | /* Single-step breakpoints should not have their addresses | |
6989 | modified. If there's any architectural constrain that | |
6990 | applies to this address, then it should have already been | |
6991 | taken into account when the breakpoint was created in the | |
6992 | first place. If we didn't do this, stepping through e.g., | |
6993 | Thumb-2 IT blocks would break. */ | |
6994 | return bpaddr; | |
6995 | } | |
76897487 KB |
6996 | else |
6997 | { | |
a0de8c21 YQ |
6998 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6999 | ||
7000 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7001 | { | |
7002 | /* Some targets have architectural constraints on the placement | |
7003 | of breakpoint instructions. Obtain the adjusted address. */ | |
7004 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7005 | } | |
76897487 | 7006 | |
a0de8c21 | 7007 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7008 | |
7009 | /* An adjusted breakpoint address can significantly alter | |
7010 | a user's expectations. Print a warning if an adjustment | |
7011 | is required. */ | |
7012 | if (adjusted_bpaddr != bpaddr) | |
7013 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7014 | ||
7015 | return adjusted_bpaddr; | |
7016 | } | |
7017 | } | |
7018 | ||
5625a286 | 7019 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7020 | { |
5625a286 | 7021 | bp_location *loc = this; |
7cc221ef | 7022 | |
348d480f PA |
7023 | gdb_assert (ops != NULL); |
7024 | ||
28010a5d PA |
7025 | loc->ops = ops; |
7026 | loc->owner = owner; | |
b775012e | 7027 | loc->cond_bytecode = NULL; |
0d381245 VP |
7028 | loc->shlib_disabled = 0; |
7029 | loc->enabled = 1; | |
e049a4b5 | 7030 | |
28010a5d | 7031 | switch (owner->type) |
e049a4b5 DJ |
7032 | { |
7033 | case bp_breakpoint: | |
7c16b83e | 7034 | case bp_single_step: |
e049a4b5 DJ |
7035 | case bp_until: |
7036 | case bp_finish: | |
7037 | case bp_longjmp: | |
7038 | case bp_longjmp_resume: | |
e2e4d78b | 7039 | case bp_longjmp_call_dummy: |
186c406b TT |
7040 | case bp_exception: |
7041 | case bp_exception_resume: | |
e049a4b5 | 7042 | case bp_step_resume: |
2c03e5be | 7043 | case bp_hp_step_resume: |
e049a4b5 DJ |
7044 | case bp_watchpoint_scope: |
7045 | case bp_call_dummy: | |
aa7d318d | 7046 | case bp_std_terminate: |
e049a4b5 DJ |
7047 | case bp_shlib_event: |
7048 | case bp_thread_event: | |
7049 | case bp_overlay_event: | |
4efc6507 | 7050 | case bp_jit_event: |
0fd8e87f | 7051 | case bp_longjmp_master: |
aa7d318d | 7052 | case bp_std_terminate_master: |
186c406b | 7053 | case bp_exception_master: |
0e30163f JK |
7054 | case bp_gnu_ifunc_resolver: |
7055 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7056 | case bp_dprintf: |
e049a4b5 | 7057 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7058 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7059 | break; |
7060 | case bp_hardware_breakpoint: | |
7061 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7062 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7063 | break; |
7064 | case bp_hardware_watchpoint: | |
7065 | case bp_read_watchpoint: | |
7066 | case bp_access_watchpoint: | |
7067 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7068 | break; | |
7069 | case bp_watchpoint: | |
ce78b96d | 7070 | case bp_catchpoint: |
15c3d785 PA |
7071 | case bp_tracepoint: |
7072 | case bp_fast_tracepoint: | |
0fb4aa4b | 7073 | case bp_static_tracepoint: |
e049a4b5 DJ |
7074 | loc->loc_type = bp_loc_other; |
7075 | break; | |
7076 | default: | |
e2e0b3e5 | 7077 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7078 | } |
7079 | ||
f431efe5 | 7080 | loc->refc = 1; |
28010a5d PA |
7081 | } |
7082 | ||
7083 | /* Allocate a struct bp_location. */ | |
7084 | ||
7085 | static struct bp_location * | |
7086 | allocate_bp_location (struct breakpoint *bpt) | |
7087 | { | |
348d480f PA |
7088 | return bpt->ops->allocate_location (bpt); |
7089 | } | |
7cc221ef | 7090 | |
f431efe5 PA |
7091 | static void |
7092 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7093 | { |
348d480f | 7094 | loc->ops->dtor (loc); |
4d01a485 | 7095 | delete loc; |
fe3f5fa8 VP |
7096 | } |
7097 | ||
f431efe5 PA |
7098 | /* Increment reference count. */ |
7099 | ||
7100 | static void | |
7101 | incref_bp_location (struct bp_location *bl) | |
7102 | { | |
7103 | ++bl->refc; | |
7104 | } | |
7105 | ||
7106 | /* Decrement reference count. If the reference count reaches 0, | |
7107 | destroy the bp_location. Sets *BLP to NULL. */ | |
7108 | ||
7109 | static void | |
7110 | decref_bp_location (struct bp_location **blp) | |
7111 | { | |
0807b50c PA |
7112 | gdb_assert ((*blp)->refc > 0); |
7113 | ||
f431efe5 PA |
7114 | if (--(*blp)->refc == 0) |
7115 | free_bp_location (*blp); | |
7116 | *blp = NULL; | |
7117 | } | |
7118 | ||
346774a9 | 7119 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7120 | |
b270e6f9 TT |
7121 | static breakpoint * |
7122 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7123 | { |
346774a9 | 7124 | struct breakpoint *b1; |
b270e6f9 | 7125 | struct breakpoint *result = b.get (); |
c906108c | 7126 | |
346774a9 PA |
7127 | /* Add this breakpoint to the end of the chain so that a list of |
7128 | breakpoints will come out in order of increasing numbers. */ | |
7129 | ||
7130 | b1 = breakpoint_chain; | |
7131 | if (b1 == 0) | |
b270e6f9 | 7132 | breakpoint_chain = b.release (); |
346774a9 PA |
7133 | else |
7134 | { | |
7135 | while (b1->next) | |
7136 | b1 = b1->next; | |
b270e6f9 | 7137 | b1->next = b.release (); |
346774a9 | 7138 | } |
b270e6f9 TT |
7139 | |
7140 | return result; | |
346774a9 PA |
7141 | } |
7142 | ||
7143 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7144 | ||
7145 | static void | |
7146 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7147 | struct gdbarch *gdbarch, | |
28010a5d | 7148 | enum bptype bptype, |
c0a91b2b | 7149 | const struct breakpoint_ops *ops) |
346774a9 | 7150 | { |
348d480f PA |
7151 | gdb_assert (ops != NULL); |
7152 | ||
28010a5d | 7153 | b->ops = ops; |
4d28f7a8 | 7154 | b->type = bptype; |
a6d9a66e | 7155 | b->gdbarch = gdbarch; |
c906108c SS |
7156 | b->language = current_language->la_language; |
7157 | b->input_radix = input_radix; | |
d0fb5eae | 7158 | b->related_breakpoint = b; |
346774a9 PA |
7159 | } |
7160 | ||
7161 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7162 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7163 | |
7164 | static struct breakpoint * | |
7165 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7166 | enum bptype bptype, |
c0a91b2b | 7167 | const struct breakpoint_ops *ops) |
346774a9 | 7168 | { |
3b0871f4 | 7169 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7170 | |
3b0871f4 | 7171 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7172 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7173 | } |
7174 | ||
0e30163f JK |
7175 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7176 | resolutions should be made as the user specified the location explicitly | |
7177 | enough. */ | |
7178 | ||
0d381245 | 7179 | static void |
0e30163f | 7180 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7181 | { |
2bdf28a0 JK |
7182 | gdb_assert (loc->owner != NULL); |
7183 | ||
0d381245 | 7184 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7185 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7186 | || is_tracepoint (loc->owner)) |
0d381245 | 7187 | { |
0e30163f | 7188 | int is_gnu_ifunc; |
2c02bd72 | 7189 | const char *function_name; |
6a3a010b | 7190 | CORE_ADDR func_addr; |
0e30163f | 7191 | |
2c02bd72 | 7192 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7193 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7194 | |
7195 | if (is_gnu_ifunc && !explicit_loc) | |
7196 | { | |
7197 | struct breakpoint *b = loc->owner; | |
7198 | ||
7199 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7200 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7201 | &loc->requested_address)) |
7202 | { | |
7203 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7204 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7205 | loc->requested_address, | |
7206 | b->type); | |
7207 | } | |
7208 | else if (b->type == bp_breakpoint && b->loc == loc | |
7209 | && loc->next == NULL && b->related_breakpoint == b) | |
7210 | { | |
7211 | /* Create only the whole new breakpoint of this type but do not | |
7212 | mess more complicated breakpoints with multiple locations. */ | |
7213 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7214 | /* Remember the resolver's address for use by the return |
7215 | breakpoint. */ | |
7216 | loc->related_address = func_addr; | |
0e30163f JK |
7217 | } |
7218 | } | |
7219 | ||
2c02bd72 DE |
7220 | if (function_name) |
7221 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7222 | } |
7223 | } | |
7224 | ||
a6d9a66e | 7225 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7226 | struct gdbarch * |
a6d9a66e UW |
7227 | get_sal_arch (struct symtab_and_line sal) |
7228 | { | |
7229 | if (sal.section) | |
7230 | return get_objfile_arch (sal.section->objfile); | |
7231 | if (sal.symtab) | |
eb822aa6 | 7232 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7233 | |
7234 | return NULL; | |
7235 | } | |
7236 | ||
346774a9 PA |
7237 | /* Low level routine for partially initializing a breakpoint of type |
7238 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7239 | file name, and line number are provided by SAL. |
0d381245 VP |
7240 | |
7241 | It is expected that the caller will complete the initialization of | |
7242 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7243 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7244 | |
346774a9 PA |
7245 | static void |
7246 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7247 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7248 | const struct breakpoint_ops *ops) |
0d381245 | 7249 | { |
28010a5d | 7250 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7251 | |
3742cc8b | 7252 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7253 | |
6c95b8df PA |
7254 | if (bptype != bp_catchpoint) |
7255 | gdb_assert (sal.pspace != NULL); | |
7256 | ||
f8eba3c6 TT |
7257 | /* Store the program space that was used to set the breakpoint, |
7258 | except for ordinary breakpoints, which are independent of the | |
7259 | program space. */ | |
7260 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7261 | b->pspace = sal.pspace; | |
346774a9 | 7262 | } |
c906108c | 7263 | |
346774a9 PA |
7264 | /* set_raw_breakpoint is a low level routine for allocating and |
7265 | partially initializing a breakpoint of type BPTYPE. The newly | |
7266 | created breakpoint's address, section, source file name, and line | |
7267 | number are provided by SAL. The newly created and partially | |
7268 | initialized breakpoint is added to the breakpoint chain and | |
7269 | is also returned as the value of this function. | |
7270 | ||
7271 | It is expected that the caller will complete the initialization of | |
7272 | the newly created breakpoint struct as well as output any status | |
7273 | information regarding the creation of a new breakpoint. In | |
7274 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7275 | number! Care should be taken to not allow an error to occur | |
7276 | prior to completing the initialization of the breakpoint. If this | |
7277 | should happen, a bogus breakpoint will be left on the chain. */ | |
7278 | ||
7279 | struct breakpoint * | |
7280 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7281 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7282 | const struct breakpoint_ops *ops) |
346774a9 | 7283 | { |
3b0871f4 | 7284 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7285 | |
3b0871f4 | 7286 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7287 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7288 | } |
7289 | ||
53a5351d | 7290 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7291 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7292 | initiated the operation. */ | |
c906108c SS |
7293 | |
7294 | void | |
186c406b | 7295 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7296 | { |
35df4500 | 7297 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7298 | int thread = tp->global_num; |
0fd8e87f UW |
7299 | |
7300 | /* To avoid having to rescan all objfile symbols at every step, | |
7301 | we maintain a list of continually-inserted but always disabled | |
7302 | longjmp "master" breakpoints. Here, we simply create momentary | |
7303 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7304 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7305 | if (b->pspace == current_program_space |
186c406b TT |
7306 | && (b->type == bp_longjmp_master |
7307 | || b->type == bp_exception_master)) | |
0fd8e87f | 7308 | { |
06edf0c0 PA |
7309 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7310 | struct breakpoint *clone; | |
cc59ec59 | 7311 | |
e2e4d78b JK |
7312 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7313 | after their removal. */ | |
06edf0c0 | 7314 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7315 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7316 | clone->thread = thread; |
7317 | } | |
186c406b TT |
7318 | |
7319 | tp->initiating_frame = frame; | |
c906108c SS |
7320 | } |
7321 | ||
611c83ae | 7322 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7323 | void |
611c83ae | 7324 | delete_longjmp_breakpoint (int thread) |
c906108c | 7325 | { |
35df4500 | 7326 | struct breakpoint *b, *b_tmp; |
c906108c | 7327 | |
35df4500 | 7328 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7329 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7330 | { |
7331 | if (b->thread == thread) | |
7332 | delete_breakpoint (b); | |
7333 | } | |
c906108c SS |
7334 | } |
7335 | ||
f59f708a PA |
7336 | void |
7337 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7338 | { | |
7339 | struct breakpoint *b, *b_tmp; | |
7340 | ||
7341 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7342 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7343 | { | |
7344 | if (b->thread == thread) | |
7345 | b->disposition = disp_del_at_next_stop; | |
7346 | } | |
7347 | } | |
7348 | ||
e2e4d78b JK |
7349 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7350 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7351 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7352 | breakpoints. */ | |
7353 | ||
7354 | struct breakpoint * | |
7355 | set_longjmp_breakpoint_for_call_dummy (void) | |
7356 | { | |
7357 | struct breakpoint *b, *retval = NULL; | |
7358 | ||
7359 | ALL_BREAKPOINTS (b) | |
7360 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7361 | { | |
7362 | struct breakpoint *new_b; | |
7363 | ||
7364 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7365 | &momentary_breakpoint_ops, |
7366 | 1); | |
5d5658a1 | 7367 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7368 | |
7369 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7370 | ||
7371 | gdb_assert (new_b->related_breakpoint == new_b); | |
7372 | if (retval == NULL) | |
7373 | retval = new_b; | |
7374 | new_b->related_breakpoint = retval; | |
7375 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7376 | retval = retval->related_breakpoint; | |
7377 | retval->related_breakpoint = new_b; | |
7378 | } | |
7379 | ||
7380 | return retval; | |
7381 | } | |
7382 | ||
7383 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7384 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7385 | stack. |
7386 | ||
7387 | You should call this function only at places where it is safe to currently | |
7388 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7389 | frames. */ | |
7390 | ||
7391 | void | |
b67a2c6f | 7392 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7393 | { |
7394 | struct breakpoint *b, *b_tmp; | |
7395 | ||
7396 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7397 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7398 | { |
7399 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7400 | ||
7401 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7402 | dummy_b = dummy_b->related_breakpoint; | |
7403 | if (dummy_b->type != bp_call_dummy | |
7404 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7405 | continue; | |
7406 | ||
b67a2c6f | 7407 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7408 | |
7409 | while (b->related_breakpoint != b) | |
7410 | { | |
7411 | if (b_tmp == b->related_breakpoint) | |
7412 | b_tmp = b->related_breakpoint->next; | |
7413 | delete_breakpoint (b->related_breakpoint); | |
7414 | } | |
7415 | delete_breakpoint (b); | |
7416 | } | |
7417 | } | |
7418 | ||
1900040c MS |
7419 | void |
7420 | enable_overlay_breakpoints (void) | |
7421 | { | |
52f0bd74 | 7422 | struct breakpoint *b; |
1900040c MS |
7423 | |
7424 | ALL_BREAKPOINTS (b) | |
7425 | if (b->type == bp_overlay_event) | |
7426 | { | |
7427 | b->enable_state = bp_enabled; | |
44702360 | 7428 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7429 | overlay_events_enabled = 1; |
1900040c MS |
7430 | } |
7431 | } | |
7432 | ||
7433 | void | |
7434 | disable_overlay_breakpoints (void) | |
7435 | { | |
52f0bd74 | 7436 | struct breakpoint *b; |
1900040c MS |
7437 | |
7438 | ALL_BREAKPOINTS (b) | |
7439 | if (b->type == bp_overlay_event) | |
7440 | { | |
7441 | b->enable_state = bp_disabled; | |
44702360 | 7442 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7443 | overlay_events_enabled = 0; |
1900040c MS |
7444 | } |
7445 | } | |
7446 | ||
aa7d318d TT |
7447 | /* Set an active std::terminate breakpoint for each std::terminate |
7448 | master breakpoint. */ | |
7449 | void | |
7450 | set_std_terminate_breakpoint (void) | |
7451 | { | |
35df4500 | 7452 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7453 | |
35df4500 | 7454 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7455 | if (b->pspace == current_program_space |
7456 | && b->type == bp_std_terminate_master) | |
7457 | { | |
06edf0c0 | 7458 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7459 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7460 | } |
7461 | } | |
7462 | ||
7463 | /* Delete all the std::terminate breakpoints. */ | |
7464 | void | |
7465 | delete_std_terminate_breakpoint (void) | |
7466 | { | |
35df4500 | 7467 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7468 | |
35df4500 | 7469 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7470 | if (b->type == bp_std_terminate) |
7471 | delete_breakpoint (b); | |
7472 | } | |
7473 | ||
c4093a6a | 7474 | struct breakpoint * |
a6d9a66e | 7475 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7476 | { |
7477 | struct breakpoint *b; | |
c4093a6a | 7478 | |
06edf0c0 PA |
7479 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7480 | &internal_breakpoint_ops); | |
7481 | ||
b5de0fa7 | 7482 | b->enable_state = bp_enabled; |
f00aae0f | 7483 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7484 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7485 | |
44702360 | 7486 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7487 | |
c4093a6a JM |
7488 | return b; |
7489 | } | |
7490 | ||
0101ce28 JJ |
7491 | struct lang_and_radix |
7492 | { | |
7493 | enum language lang; | |
7494 | int radix; | |
7495 | }; | |
7496 | ||
4efc6507 DE |
7497 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7498 | ||
7499 | struct breakpoint * | |
7500 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7501 | { | |
2a7f3dff PA |
7502 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7503 | &internal_breakpoint_ops); | |
4efc6507 | 7504 | } |
0101ce28 | 7505 | |
03673fc7 PP |
7506 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7507 | ||
7508 | void | |
7509 | remove_jit_event_breakpoints (void) | |
7510 | { | |
7511 | struct breakpoint *b, *b_tmp; | |
7512 | ||
7513 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7514 | if (b->type == bp_jit_event | |
7515 | && b->loc->pspace == current_program_space) | |
7516 | delete_breakpoint (b); | |
7517 | } | |
7518 | ||
cae688ec JJ |
7519 | void |
7520 | remove_solib_event_breakpoints (void) | |
7521 | { | |
35df4500 | 7522 | struct breakpoint *b, *b_tmp; |
cae688ec | 7523 | |
35df4500 | 7524 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7525 | if (b->type == bp_shlib_event |
7526 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7527 | delete_breakpoint (b); |
7528 | } | |
7529 | ||
f37f681c PA |
7530 | /* See breakpoint.h. */ |
7531 | ||
7532 | void | |
7533 | remove_solib_event_breakpoints_at_next_stop (void) | |
7534 | { | |
7535 | struct breakpoint *b, *b_tmp; | |
7536 | ||
7537 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7538 | if (b->type == bp_shlib_event | |
7539 | && b->loc->pspace == current_program_space) | |
7540 | b->disposition = disp_del_at_next_stop; | |
7541 | } | |
7542 | ||
04086b45 PA |
7543 | /* Helper for create_solib_event_breakpoint / |
7544 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7545 | INSERT_MODE to pass through to update_global_location_list. */ | |
7546 | ||
7547 | static struct breakpoint * | |
7548 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7549 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7550 | { |
7551 | struct breakpoint *b; | |
7552 | ||
06edf0c0 PA |
7553 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7554 | &internal_breakpoint_ops); | |
04086b45 | 7555 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7556 | return b; |
7557 | } | |
7558 | ||
04086b45 PA |
7559 | struct breakpoint * |
7560 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7561 | { | |
7562 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7563 | } | |
7564 | ||
f37f681c PA |
7565 | /* See breakpoint.h. */ |
7566 | ||
7567 | struct breakpoint * | |
7568 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7569 | { | |
7570 | struct breakpoint *b; | |
7571 | ||
04086b45 PA |
7572 | /* Explicitly tell update_global_location_list to insert |
7573 | locations. */ | |
7574 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7575 | if (!b->loc->inserted) |
7576 | { | |
7577 | delete_breakpoint (b); | |
7578 | return NULL; | |
7579 | } | |
7580 | return b; | |
7581 | } | |
7582 | ||
cae688ec JJ |
7583 | /* Disable any breakpoints that are on code in shared libraries. Only |
7584 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7585 | ||
7586 | void | |
cb851954 | 7587 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7588 | { |
876fa593 | 7589 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7590 | |
876fa593 | 7591 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7592 | { |
2bdf28a0 | 7593 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7594 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7595 | |
4a64f543 MS |
7596 | /* We apply the check to all breakpoints, including disabled for |
7597 | those with loc->duplicate set. This is so that when breakpoint | |
7598 | becomes enabled, or the duplicate is removed, gdb will try to | |
7599 | insert all breakpoints. If we don't set shlib_disabled here, | |
7600 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7601 | if (((b->type == bp_breakpoint) |
508ccb1f | 7602 | || (b->type == bp_jit_event) |
1042e4c0 | 7603 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7604 | || (is_tracepoint (b))) |
6c95b8df | 7605 | && loc->pspace == current_program_space |
0d381245 | 7606 | && !loc->shlib_disabled |
6c95b8df | 7607 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7608 | ) |
0d381245 VP |
7609 | { |
7610 | loc->shlib_disabled = 1; | |
7611 | } | |
cae688ec JJ |
7612 | } |
7613 | } | |
7614 | ||
63644780 NB |
7615 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7616 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7617 | disabled ones can just stay disabled. */ | |
84acb35a | 7618 | |
75149521 | 7619 | static void |
84acb35a JJ |
7620 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7621 | { | |
876fa593 | 7622 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7623 | int disabled_shlib_breaks = 0; |
7624 | ||
876fa593 | 7625 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7626 | { |
2bdf28a0 | 7627 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7628 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7629 | |
1e4d1764 | 7630 | if (solib->pspace == loc->pspace |
e2dd7057 | 7631 | && !loc->shlib_disabled |
1e4d1764 YQ |
7632 | && (((b->type == bp_breakpoint |
7633 | || b->type == bp_jit_event | |
7634 | || b->type == bp_hardware_breakpoint) | |
7635 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7636 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7637 | || is_tracepoint (b)) | |
e2dd7057 | 7638 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7639 | { |
e2dd7057 PP |
7640 | loc->shlib_disabled = 1; |
7641 | /* At this point, we cannot rely on remove_breakpoint | |
7642 | succeeding so we must mark the breakpoint as not inserted | |
7643 | to prevent future errors occurring in remove_breakpoints. */ | |
7644 | loc->inserted = 0; | |
8d3788bd VP |
7645 | |
7646 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7647 | observer_notify_breakpoint_modified (b); | |
7648 | ||
e2dd7057 PP |
7649 | if (!disabled_shlib_breaks) |
7650 | { | |
223ffa71 | 7651 | target_terminal::ours_for_output (); |
3e43a32a MS |
7652 | warning (_("Temporarily disabling breakpoints " |
7653 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7654 | solib->so_name); |
84acb35a | 7655 | } |
e2dd7057 | 7656 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7657 | } |
7658 | } | |
84acb35a JJ |
7659 | } |
7660 | ||
63644780 NB |
7661 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7662 | notification of free_objfile. Only apply to enabled breakpoints, | |
7663 | disabled ones can just stay disabled. */ | |
7664 | ||
7665 | static void | |
7666 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7667 | { | |
7668 | struct breakpoint *b; | |
7669 | ||
7670 | if (objfile == NULL) | |
7671 | return; | |
7672 | ||
d03de421 PA |
7673 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7674 | managed by the user with add-symbol-file/remove-symbol-file. | |
7675 | Similarly to how breakpoints in shared libraries are handled in | |
7676 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7677 | shlib_disabled so they end up uninserted on the next global |
7678 | location list update. Shared libraries not loaded by the user | |
7679 | aren't handled here -- they're already handled in | |
7680 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7681 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7682 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7683 | main objfile). */ | |
7684 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7685 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7686 | return; |
7687 | ||
7688 | ALL_BREAKPOINTS (b) | |
7689 | { | |
7690 | struct bp_location *loc; | |
7691 | int bp_modified = 0; | |
7692 | ||
7693 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7694 | continue; | |
7695 | ||
7696 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7697 | { | |
7698 | CORE_ADDR loc_addr = loc->address; | |
7699 | ||
7700 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7701 | && loc->loc_type != bp_loc_software_breakpoint) | |
7702 | continue; | |
7703 | ||
7704 | if (loc->shlib_disabled != 0) | |
7705 | continue; | |
7706 | ||
7707 | if (objfile->pspace != loc->pspace) | |
7708 | continue; | |
7709 | ||
7710 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7711 | && loc->loc_type != bp_loc_software_breakpoint) | |
7712 | continue; | |
7713 | ||
7714 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7715 | { | |
7716 | loc->shlib_disabled = 1; | |
08351840 PA |
7717 | /* At this point, we don't know whether the object was |
7718 | unmapped from the inferior or not, so leave the | |
7719 | inserted flag alone. We'll handle failure to | |
7720 | uninsert quietly, in case the object was indeed | |
7721 | unmapped. */ | |
63644780 NB |
7722 | |
7723 | mark_breakpoint_location_modified (loc); | |
7724 | ||
7725 | bp_modified = 1; | |
7726 | } | |
7727 | } | |
7728 | ||
7729 | if (bp_modified) | |
7730 | observer_notify_breakpoint_modified (b); | |
7731 | } | |
7732 | } | |
7733 | ||
ce78b96d JB |
7734 | /* FORK & VFORK catchpoints. */ |
7735 | ||
e29a4733 | 7736 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7737 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7738 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7739 | |
c1fc2657 | 7740 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7741 | { |
e29a4733 PA |
7742 | /* Process id of a child process whose forking triggered this |
7743 | catchpoint. This field is only valid immediately after this | |
7744 | catchpoint has triggered. */ | |
7745 | ptid_t forked_inferior_pid; | |
7746 | }; | |
7747 | ||
4a64f543 MS |
7748 | /* Implement the "insert" breakpoint_ops method for fork |
7749 | catchpoints. */ | |
ce78b96d | 7750 | |
77b06cd7 TJB |
7751 | static int |
7752 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7753 | { |
dfd4cc63 | 7754 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7755 | } |
7756 | ||
4a64f543 MS |
7757 | /* Implement the "remove" breakpoint_ops method for fork |
7758 | catchpoints. */ | |
ce78b96d JB |
7759 | |
7760 | static int | |
73971819 | 7761 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7762 | { |
dfd4cc63 | 7763 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7764 | } |
7765 | ||
7766 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7767 | catchpoints. */ | |
7768 | ||
7769 | static int | |
f1310107 | 7770 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7771 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7772 | const struct target_waitstatus *ws) |
ce78b96d | 7773 | { |
e29a4733 PA |
7774 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7775 | ||
f90263c1 TT |
7776 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7777 | return 0; | |
7778 | ||
7779 | c->forked_inferior_pid = ws->value.related_pid; | |
7780 | return 1; | |
ce78b96d JB |
7781 | } |
7782 | ||
4a64f543 MS |
7783 | /* Implement the "print_it" breakpoint_ops method for fork |
7784 | catchpoints. */ | |
ce78b96d JB |
7785 | |
7786 | static enum print_stop_action | |
348d480f | 7787 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7788 | { |
36dfb11c | 7789 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7790 | struct breakpoint *b = bs->breakpoint_at; |
7791 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7792 | |
ce78b96d | 7793 | annotate_catchpoint (b->number); |
f303dbd6 | 7794 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7795 | if (b->disposition == disp_del) |
112e8700 | 7796 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7797 | else |
112e8700 SM |
7798 | uiout->text ("Catchpoint "); |
7799 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7800 | { |
112e8700 SM |
7801 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7802 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7803 | } |
112e8700 SM |
7804 | uiout->field_int ("bkptno", b->number); |
7805 | uiout->text (" (forked process "); | |
7806 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7807 | uiout->text ("), "); | |
ce78b96d JB |
7808 | return PRINT_SRC_AND_LOC; |
7809 | } | |
7810 | ||
4a64f543 MS |
7811 | /* Implement the "print_one" breakpoint_ops method for fork |
7812 | catchpoints. */ | |
ce78b96d JB |
7813 | |
7814 | static void | |
a6d9a66e | 7815 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7816 | { |
e29a4733 | 7817 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7818 | struct value_print_options opts; |
79a45e25 | 7819 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7820 | |
7821 | get_user_print_options (&opts); | |
7822 | ||
4a64f543 MS |
7823 | /* Field 4, the address, is omitted (which makes the columns not |
7824 | line up too nicely with the headers, but the effect is relatively | |
7825 | readable). */ | |
79a45b7d | 7826 | if (opts.addressprint) |
112e8700 | 7827 | uiout->field_skip ("addr"); |
ce78b96d | 7828 | annotate_field (5); |
112e8700 | 7829 | uiout->text ("fork"); |
e29a4733 | 7830 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7831 | { |
112e8700 SM |
7832 | uiout->text (", process "); |
7833 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7834 | uiout->spaces (1); | |
ce78b96d | 7835 | } |
8ac3646f | 7836 | |
112e8700 SM |
7837 | if (uiout->is_mi_like_p ()) |
7838 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7839 | } |
7840 | ||
7841 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7842 | catchpoints. */ | |
7843 | ||
7844 | static void | |
7845 | print_mention_catch_fork (struct breakpoint *b) | |
7846 | { | |
7847 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7848 | } | |
7849 | ||
6149aea9 PA |
7850 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7851 | catchpoints. */ | |
7852 | ||
7853 | static void | |
7854 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7855 | { | |
7856 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7857 | print_recreate_thread (b, fp); |
6149aea9 PA |
7858 | } |
7859 | ||
ce78b96d JB |
7860 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7861 | ||
2060206e | 7862 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7863 | |
4a64f543 MS |
7864 | /* Implement the "insert" breakpoint_ops method for vfork |
7865 | catchpoints. */ | |
ce78b96d | 7866 | |
77b06cd7 TJB |
7867 | static int |
7868 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7869 | { |
dfd4cc63 | 7870 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7871 | } |
7872 | ||
4a64f543 MS |
7873 | /* Implement the "remove" breakpoint_ops method for vfork |
7874 | catchpoints. */ | |
ce78b96d JB |
7875 | |
7876 | static int | |
73971819 | 7877 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7878 | { |
dfd4cc63 | 7879 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7880 | } |
7881 | ||
7882 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7883 | catchpoints. */ | |
7884 | ||
7885 | static int | |
f1310107 | 7886 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7887 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7888 | const struct target_waitstatus *ws) |
ce78b96d | 7889 | { |
e29a4733 PA |
7890 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7891 | ||
f90263c1 TT |
7892 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7893 | return 0; | |
7894 | ||
7895 | c->forked_inferior_pid = ws->value.related_pid; | |
7896 | return 1; | |
ce78b96d JB |
7897 | } |
7898 | ||
4a64f543 MS |
7899 | /* Implement the "print_it" breakpoint_ops method for vfork |
7900 | catchpoints. */ | |
ce78b96d JB |
7901 | |
7902 | static enum print_stop_action | |
348d480f | 7903 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7904 | { |
36dfb11c | 7905 | struct ui_out *uiout = current_uiout; |
348d480f | 7906 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7907 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7908 | ||
ce78b96d | 7909 | annotate_catchpoint (b->number); |
f303dbd6 | 7910 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7911 | if (b->disposition == disp_del) |
112e8700 | 7912 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7913 | else |
112e8700 SM |
7914 | uiout->text ("Catchpoint "); |
7915 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7916 | { |
112e8700 SM |
7917 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7918 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7919 | } |
112e8700 SM |
7920 | uiout->field_int ("bkptno", b->number); |
7921 | uiout->text (" (vforked process "); | |
7922 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7923 | uiout->text ("), "); | |
ce78b96d JB |
7924 | return PRINT_SRC_AND_LOC; |
7925 | } | |
7926 | ||
4a64f543 MS |
7927 | /* Implement the "print_one" breakpoint_ops method for vfork |
7928 | catchpoints. */ | |
ce78b96d JB |
7929 | |
7930 | static void | |
a6d9a66e | 7931 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7932 | { |
e29a4733 | 7933 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7934 | struct value_print_options opts; |
79a45e25 | 7935 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7936 | |
7937 | get_user_print_options (&opts); | |
4a64f543 MS |
7938 | /* Field 4, the address, is omitted (which makes the columns not |
7939 | line up too nicely with the headers, but the effect is relatively | |
7940 | readable). */ | |
79a45b7d | 7941 | if (opts.addressprint) |
112e8700 | 7942 | uiout->field_skip ("addr"); |
ce78b96d | 7943 | annotate_field (5); |
112e8700 | 7944 | uiout->text ("vfork"); |
e29a4733 | 7945 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7946 | { |
112e8700 SM |
7947 | uiout->text (", process "); |
7948 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7949 | uiout->spaces (1); | |
ce78b96d | 7950 | } |
8ac3646f | 7951 | |
112e8700 SM |
7952 | if (uiout->is_mi_like_p ()) |
7953 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7954 | } |
7955 | ||
7956 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7957 | catchpoints. */ | |
7958 | ||
7959 | static void | |
7960 | print_mention_catch_vfork (struct breakpoint *b) | |
7961 | { | |
7962 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7963 | } | |
7964 | ||
6149aea9 PA |
7965 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7966 | catchpoints. */ | |
7967 | ||
7968 | static void | |
7969 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7970 | { | |
7971 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7972 | print_recreate_thread (b, fp); |
6149aea9 PA |
7973 | } |
7974 | ||
ce78b96d JB |
7975 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7976 | ||
2060206e | 7977 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7978 | |
edcc5120 | 7979 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7980 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7981 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7982 | ||
c1fc2657 | 7983 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7984 | { |
c1fc2657 | 7985 | ~solib_catchpoint () override; |
edcc5120 TT |
7986 | |
7987 | /* True for "catch load", false for "catch unload". */ | |
7988 | unsigned char is_load; | |
7989 | ||
7990 | /* Regular expression to match, if any. COMPILED is only valid when | |
7991 | REGEX is non-NULL. */ | |
7992 | char *regex; | |
2d7cc5c7 | 7993 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7994 | }; |
7995 | ||
c1fc2657 | 7996 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7997 | { |
c1fc2657 | 7998 | xfree (this->regex); |
edcc5120 TT |
7999 | } |
8000 | ||
8001 | static int | |
8002 | insert_catch_solib (struct bp_location *ignore) | |
8003 | { | |
8004 | return 0; | |
8005 | } | |
8006 | ||
8007 | static int | |
73971819 | 8008 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8009 | { |
8010 | return 0; | |
8011 | } | |
8012 | ||
8013 | static int | |
8014 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8015 | const address_space *aspace, |
edcc5120 TT |
8016 | CORE_ADDR bp_addr, |
8017 | const struct target_waitstatus *ws) | |
8018 | { | |
8019 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8020 | struct breakpoint *other; | |
8021 | ||
8022 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8023 | return 1; | |
8024 | ||
8025 | ALL_BREAKPOINTS (other) | |
8026 | { | |
8027 | struct bp_location *other_bl; | |
8028 | ||
8029 | if (other == bl->owner) | |
8030 | continue; | |
8031 | ||
8032 | if (other->type != bp_shlib_event) | |
8033 | continue; | |
8034 | ||
c1fc2657 | 8035 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8036 | continue; |
8037 | ||
8038 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8039 | { | |
8040 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8041 | return 1; | |
8042 | } | |
8043 | } | |
8044 | ||
8045 | return 0; | |
8046 | } | |
8047 | ||
8048 | static void | |
8049 | check_status_catch_solib (struct bpstats *bs) | |
8050 | { | |
8051 | struct solib_catchpoint *self | |
8052 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8053 | int ix; | |
8054 | ||
8055 | if (self->is_load) | |
8056 | { | |
8057 | struct so_list *iter; | |
8058 | ||
8059 | for (ix = 0; | |
8060 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8061 | ix, iter); | |
8062 | ++ix) | |
8063 | { | |
8064 | if (!self->regex | |
2d7cc5c7 | 8065 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8066 | return; |
8067 | } | |
8068 | } | |
8069 | else | |
8070 | { | |
8071 | char *iter; | |
8072 | ||
8073 | for (ix = 0; | |
8074 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8075 | ix, iter); | |
8076 | ++ix) | |
8077 | { | |
8078 | if (!self->regex | |
2d7cc5c7 | 8079 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8080 | return; |
8081 | } | |
8082 | } | |
8083 | ||
8084 | bs->stop = 0; | |
8085 | bs->print_it = print_it_noop; | |
8086 | } | |
8087 | ||
8088 | static enum print_stop_action | |
8089 | print_it_catch_solib (bpstat bs) | |
8090 | { | |
8091 | struct breakpoint *b = bs->breakpoint_at; | |
8092 | struct ui_out *uiout = current_uiout; | |
8093 | ||
8094 | annotate_catchpoint (b->number); | |
f303dbd6 | 8095 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8096 | if (b->disposition == disp_del) |
112e8700 | 8097 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8098 | else |
112e8700 SM |
8099 | uiout->text ("Catchpoint "); |
8100 | uiout->field_int ("bkptno", b->number); | |
8101 | uiout->text ("\n"); | |
8102 | if (uiout->is_mi_like_p ()) | |
8103 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8104 | print_solib_event (1); |
8105 | return PRINT_SRC_AND_LOC; | |
8106 | } | |
8107 | ||
8108 | static void | |
8109 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8110 | { | |
8111 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8112 | struct value_print_options opts; | |
8113 | struct ui_out *uiout = current_uiout; | |
8114 | char *msg; | |
8115 | ||
8116 | get_user_print_options (&opts); | |
8117 | /* Field 4, the address, is omitted (which makes the columns not | |
8118 | line up too nicely with the headers, but the effect is relatively | |
8119 | readable). */ | |
8120 | if (opts.addressprint) | |
8121 | { | |
8122 | annotate_field (4); | |
112e8700 | 8123 | uiout->field_skip ("addr"); |
edcc5120 TT |
8124 | } |
8125 | ||
8126 | annotate_field (5); | |
8127 | if (self->is_load) | |
8128 | { | |
8129 | if (self->regex) | |
8130 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8131 | else | |
8132 | msg = xstrdup (_("load of library")); | |
8133 | } | |
8134 | else | |
8135 | { | |
8136 | if (self->regex) | |
8137 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8138 | else | |
8139 | msg = xstrdup (_("unload of library")); | |
8140 | } | |
112e8700 | 8141 | uiout->field_string ("what", msg); |
edcc5120 | 8142 | xfree (msg); |
8ac3646f | 8143 | |
112e8700 SM |
8144 | if (uiout->is_mi_like_p ()) |
8145 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8146 | } |
8147 | ||
8148 | static void | |
8149 | print_mention_catch_solib (struct breakpoint *b) | |
8150 | { | |
8151 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8152 | ||
8153 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8154 | self->is_load ? "load" : "unload"); | |
8155 | } | |
8156 | ||
8157 | static void | |
8158 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8159 | { | |
8160 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8161 | ||
8162 | fprintf_unfiltered (fp, "%s %s", | |
8163 | b->disposition == disp_del ? "tcatch" : "catch", | |
8164 | self->is_load ? "load" : "unload"); | |
8165 | if (self->regex) | |
8166 | fprintf_unfiltered (fp, " %s", self->regex); | |
8167 | fprintf_unfiltered (fp, "\n"); | |
8168 | } | |
8169 | ||
8170 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8171 | ||
91985142 MG |
8172 | /* Shared helper function (MI and CLI) for creating and installing |
8173 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8174 | the events to be caught are load events, otherwise they are | |
8175 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8176 | temporary one. If ENABLED is non-zero the catchpoint is | |
8177 | created in an enabled state. */ | |
edcc5120 | 8178 | |
91985142 | 8179 | void |
a121b7c1 | 8180 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8181 | { |
edcc5120 | 8182 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8183 | |
edcc5120 TT |
8184 | if (!arg) |
8185 | arg = ""; | |
f1735a53 | 8186 | arg = skip_spaces (arg); |
edcc5120 | 8187 | |
36bd8eaa | 8188 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8189 | |
8190 | if (*arg != '\0') | |
8191 | { | |
2d7cc5c7 PA |
8192 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8193 | _("Invalid regexp"))); | |
edcc5120 TT |
8194 | c->regex = xstrdup (arg); |
8195 | } | |
8196 | ||
8197 | c->is_load = is_load; | |
36bd8eaa | 8198 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8199 | &catch_solib_breakpoint_ops); |
8200 | ||
c1fc2657 | 8201 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8202 | |
b270e6f9 | 8203 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8204 | } |
8205 | ||
91985142 MG |
8206 | /* A helper function that does all the work for "catch load" and |
8207 | "catch unload". */ | |
8208 | ||
8209 | static void | |
eb4c3f4a | 8210 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8211 | struct cmd_list_element *command) |
8212 | { | |
8213 | int tempflag; | |
8214 | const int enabled = 1; | |
8215 | ||
8216 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8217 | ||
8218 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8219 | } | |
8220 | ||
edcc5120 | 8221 | static void |
eb4c3f4a | 8222 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8223 | struct cmd_list_element *command) |
8224 | { | |
8225 | catch_load_or_unload (arg, from_tty, 1, command); | |
8226 | } | |
8227 | ||
8228 | static void | |
eb4c3f4a | 8229 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8230 | struct cmd_list_element *command) |
8231 | { | |
8232 | catch_load_or_unload (arg, from_tty, 0, command); | |
8233 | } | |
8234 | ||
346774a9 PA |
8235 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8236 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8237 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8238 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8239 | |
ab04a2af | 8240 | void |
346774a9 PA |
8241 | init_catchpoint (struct breakpoint *b, |
8242 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8243 | const char *cond_string, |
c0a91b2b | 8244 | const struct breakpoint_ops *ops) |
c906108c | 8245 | { |
51abb421 | 8246 | symtab_and_line sal; |
6c95b8df | 8247 | sal.pspace = current_program_space; |
c5aa993b | 8248 | |
28010a5d | 8249 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8250 | |
1b36a34b | 8251 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8252 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8253 | } |
8254 | ||
28010a5d | 8255 | void |
b270e6f9 | 8256 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8257 | { |
b270e6f9 | 8258 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8259 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8260 | if (is_tracepoint (b)) |
8261 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8262 | if (!internal) |
8263 | mention (b); | |
c56053d2 | 8264 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8265 | |
8266 | if (update_gll) | |
44702360 | 8267 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8268 | } |
8269 | ||
9b70b993 | 8270 | static void |
a6d9a66e | 8271 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8272 | int tempflag, const char *cond_string, |
c0a91b2b | 8273 | const struct breakpoint_ops *ops) |
c906108c | 8274 | { |
b270e6f9 | 8275 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8276 | |
b270e6f9 | 8277 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8278 | |
8279 | c->forked_inferior_pid = null_ptid; | |
8280 | ||
b270e6f9 | 8281 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8282 | } |
8283 | ||
fe798b75 JB |
8284 | /* Exec catchpoints. */ |
8285 | ||
b4d90040 | 8286 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8287 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8288 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8289 | ||
c1fc2657 | 8290 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8291 | { |
c1fc2657 | 8292 | ~exec_catchpoint () override; |
b4d90040 PA |
8293 | |
8294 | /* Filename of a program whose exec triggered this catchpoint. | |
8295 | This field is only valid immediately after this catchpoint has | |
8296 | triggered. */ | |
8297 | char *exec_pathname; | |
8298 | }; | |
8299 | ||
c1fc2657 | 8300 | /* Exec catchpoint destructor. */ |
b4d90040 | 8301 | |
c1fc2657 | 8302 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8303 | { |
c1fc2657 | 8304 | xfree (this->exec_pathname); |
b4d90040 PA |
8305 | } |
8306 | ||
77b06cd7 TJB |
8307 | static int |
8308 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8309 | { |
dfd4cc63 | 8310 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8311 | } |
c906108c | 8312 | |
fe798b75 | 8313 | static int |
73971819 | 8314 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8315 | { |
dfd4cc63 | 8316 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8317 | } |
c906108c | 8318 | |
fe798b75 | 8319 | static int |
f1310107 | 8320 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8321 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8322 | const struct target_waitstatus *ws) |
fe798b75 | 8323 | { |
b4d90040 PA |
8324 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8325 | ||
f90263c1 TT |
8326 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8327 | return 0; | |
8328 | ||
8329 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8330 | return 1; | |
fe798b75 | 8331 | } |
c906108c | 8332 | |
fe798b75 | 8333 | static enum print_stop_action |
348d480f | 8334 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8335 | { |
36dfb11c | 8336 | struct ui_out *uiout = current_uiout; |
348d480f | 8337 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8338 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8339 | ||
fe798b75 | 8340 | annotate_catchpoint (b->number); |
f303dbd6 | 8341 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8342 | if (b->disposition == disp_del) |
112e8700 | 8343 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8344 | else |
112e8700 SM |
8345 | uiout->text ("Catchpoint "); |
8346 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8347 | { |
112e8700 SM |
8348 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8349 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8350 | } |
112e8700 SM |
8351 | uiout->field_int ("bkptno", b->number); |
8352 | uiout->text (" (exec'd "); | |
8353 | uiout->field_string ("new-exec", c->exec_pathname); | |
8354 | uiout->text ("), "); | |
36dfb11c | 8355 | |
fe798b75 | 8356 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8357 | } |
8358 | ||
fe798b75 | 8359 | static void |
a6d9a66e | 8360 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8361 | { |
b4d90040 | 8362 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8363 | struct value_print_options opts; |
79a45e25 | 8364 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8365 | |
8366 | get_user_print_options (&opts); | |
8367 | ||
8368 | /* Field 4, the address, is omitted (which makes the columns | |
8369 | not line up too nicely with the headers, but the effect | |
8370 | is relatively readable). */ | |
8371 | if (opts.addressprint) | |
112e8700 | 8372 | uiout->field_skip ("addr"); |
fe798b75 | 8373 | annotate_field (5); |
112e8700 | 8374 | uiout->text ("exec"); |
b4d90040 | 8375 | if (c->exec_pathname != NULL) |
fe798b75 | 8376 | { |
112e8700 SM |
8377 | uiout->text (", program \""); |
8378 | uiout->field_string ("what", c->exec_pathname); | |
8379 | uiout->text ("\" "); | |
fe798b75 | 8380 | } |
8ac3646f | 8381 | |
112e8700 SM |
8382 | if (uiout->is_mi_like_p ()) |
8383 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8384 | } |
8385 | ||
8386 | static void | |
8387 | print_mention_catch_exec (struct breakpoint *b) | |
8388 | { | |
8389 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8390 | } | |
8391 | ||
6149aea9 PA |
8392 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8393 | catchpoints. */ | |
8394 | ||
8395 | static void | |
8396 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8397 | { | |
8398 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8399 | print_recreate_thread (b, fp); |
6149aea9 PA |
8400 | } |
8401 | ||
2060206e | 8402 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8403 | |
c906108c | 8404 | static int |
fba45db2 | 8405 | hw_breakpoint_used_count (void) |
c906108c | 8406 | { |
c906108c | 8407 | int i = 0; |
f1310107 TJB |
8408 | struct breakpoint *b; |
8409 | struct bp_location *bl; | |
c906108c SS |
8410 | |
8411 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8412 | { |
d6b74ac4 | 8413 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8414 | for (bl = b->loc; bl; bl = bl->next) |
8415 | { | |
8416 | /* Special types of hardware breakpoints may use more than | |
8417 | one register. */ | |
348d480f | 8418 | i += b->ops->resources_needed (bl); |
f1310107 | 8419 | } |
c5aa993b | 8420 | } |
c906108c SS |
8421 | |
8422 | return i; | |
8423 | } | |
8424 | ||
a1398e0c PA |
8425 | /* Returns the resources B would use if it were a hardware |
8426 | watchpoint. */ | |
8427 | ||
c906108c | 8428 | static int |
a1398e0c | 8429 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8430 | { |
c906108c | 8431 | int i = 0; |
e09342b5 | 8432 | struct bp_location *bl; |
c906108c | 8433 | |
a1398e0c PA |
8434 | if (!breakpoint_enabled (b)) |
8435 | return 0; | |
8436 | ||
8437 | for (bl = b->loc; bl; bl = bl->next) | |
8438 | { | |
8439 | /* Special types of hardware watchpoints may use more than | |
8440 | one register. */ | |
8441 | i += b->ops->resources_needed (bl); | |
8442 | } | |
8443 | ||
8444 | return i; | |
8445 | } | |
8446 | ||
8447 | /* Returns the sum the used resources of all hardware watchpoints of | |
8448 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8449 | the sum of the used resources of all hardware watchpoints of other | |
8450 | types _not_ TYPE. */ | |
8451 | ||
8452 | static int | |
8453 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8454 | enum bptype type, int *other_type_used) | |
8455 | { | |
8456 | int i = 0; | |
8457 | struct breakpoint *b; | |
8458 | ||
c906108c SS |
8459 | *other_type_used = 0; |
8460 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8461 | { |
a1398e0c PA |
8462 | if (b == except) |
8463 | continue; | |
e09342b5 TJB |
8464 | if (!breakpoint_enabled (b)) |
8465 | continue; | |
8466 | ||
a1398e0c PA |
8467 | if (b->type == type) |
8468 | i += hw_watchpoint_use_count (b); | |
8469 | else if (is_hardware_watchpoint (b)) | |
8470 | *other_type_used = 1; | |
e09342b5 TJB |
8471 | } |
8472 | ||
c906108c SS |
8473 | return i; |
8474 | } | |
8475 | ||
c906108c | 8476 | void |
fba45db2 | 8477 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8478 | { |
c5aa993b | 8479 | struct breakpoint *b; |
c906108c SS |
8480 | |
8481 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8482 | { |
cc60f2e3 | 8483 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8484 | { |
b5de0fa7 | 8485 | b->enable_state = bp_call_disabled; |
44702360 | 8486 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8487 | } |
8488 | } | |
c906108c SS |
8489 | } |
8490 | ||
8491 | void | |
fba45db2 | 8492 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8493 | { |
c5aa993b | 8494 | struct breakpoint *b; |
c906108c SS |
8495 | |
8496 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8497 | { |
cc60f2e3 | 8498 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8499 | { |
b5de0fa7 | 8500 | b->enable_state = bp_enabled; |
44702360 | 8501 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8502 | } |
8503 | } | |
c906108c SS |
8504 | } |
8505 | ||
8bea4e01 UW |
8506 | void |
8507 | disable_breakpoints_before_startup (void) | |
8508 | { | |
6c95b8df | 8509 | current_program_space->executing_startup = 1; |
44702360 | 8510 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8511 | } |
8512 | ||
8513 | void | |
8514 | enable_breakpoints_after_startup (void) | |
8515 | { | |
6c95b8df | 8516 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8517 | breakpoint_re_set (); |
8bea4e01 UW |
8518 | } |
8519 | ||
7c16b83e PA |
8520 | /* Create a new single-step breakpoint for thread THREAD, with no |
8521 | locations. */ | |
c906108c | 8522 | |
7c16b83e PA |
8523 | static struct breakpoint * |
8524 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8525 | { | |
b270e6f9 | 8526 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8527 | |
b270e6f9 | 8528 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8529 | &momentary_breakpoint_ops); |
8530 | ||
8531 | b->disposition = disp_donttouch; | |
8532 | b->frame_id = null_frame_id; | |
8533 | ||
8534 | b->thread = thread; | |
8535 | gdb_assert (b->thread != 0); | |
8536 | ||
b270e6f9 | 8537 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8538 | } |
8539 | ||
8540 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8541 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8542 | frame. */ | |
c906108c | 8543 | |
454dafbd | 8544 | breakpoint_up |
a6d9a66e UW |
8545 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8546 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8547 | { |
52f0bd74 | 8548 | struct breakpoint *b; |
edb3359d | 8549 | |
193facb3 JK |
8550 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8551 | tail-called one. */ | |
8552 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8553 | |
06edf0c0 | 8554 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8555 | b->enable_state = bp_enabled; |
8556 | b->disposition = disp_donttouch; | |
818dd999 | 8557 | b->frame_id = frame_id; |
c906108c | 8558 | |
4a64f543 MS |
8559 | /* If we're debugging a multi-threaded program, then we want |
8560 | momentary breakpoints to be active in only a single thread of | |
8561 | control. */ | |
39f77062 | 8562 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8563 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8564 | |
44702360 | 8565 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8566 | |
454dafbd | 8567 | return breakpoint_up (b); |
c906108c | 8568 | } |
611c83ae | 8569 | |
06edf0c0 | 8570 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8571 | The new breakpoint will have type TYPE, use OPS as its |
8572 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8573 | |
06edf0c0 PA |
8574 | static struct breakpoint * |
8575 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8576 | enum bptype type, | |
a1aa2221 LM |
8577 | const struct breakpoint_ops *ops, |
8578 | int loc_enabled) | |
e58b0e63 PA |
8579 | { |
8580 | struct breakpoint *copy; | |
8581 | ||
06edf0c0 | 8582 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8583 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8584 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8585 | |
a6d9a66e | 8586 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8587 | copy->loc->requested_address = orig->loc->requested_address; |
8588 | copy->loc->address = orig->loc->address; | |
8589 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8590 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8591 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8592 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8593 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8594 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8595 | copy->frame_id = orig->frame_id; |
8596 | copy->thread = orig->thread; | |
6c95b8df | 8597 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8598 | |
8599 | copy->enable_state = bp_enabled; | |
8600 | copy->disposition = disp_donttouch; | |
8601 | copy->number = internal_breakpoint_number--; | |
8602 | ||
44702360 | 8603 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8604 | return copy; |
8605 | } | |
8606 | ||
06edf0c0 PA |
8607 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8608 | ORIG is NULL. */ | |
8609 | ||
8610 | struct breakpoint * | |
8611 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8612 | { | |
8613 | /* If there's nothing to clone, then return nothing. */ | |
8614 | if (orig == NULL) | |
8615 | return NULL; | |
8616 | ||
a1aa2221 | 8617 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8618 | } |
8619 | ||
454dafbd | 8620 | breakpoint_up |
a6d9a66e UW |
8621 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8622 | enum bptype type) | |
611c83ae PA |
8623 | { |
8624 | struct symtab_and_line sal; | |
8625 | ||
8626 | sal = find_pc_line (pc, 0); | |
8627 | sal.pc = pc; | |
8628 | sal.section = find_pc_overlay (pc); | |
8629 | sal.explicit_pc = 1; | |
8630 | ||
a6d9a66e | 8631 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8632 | } |
c906108c | 8633 | \f |
c5aa993b | 8634 | |
c906108c SS |
8635 | /* Tell the user we have just set a breakpoint B. */ |
8636 | ||
8637 | static void | |
fba45db2 | 8638 | mention (struct breakpoint *b) |
c906108c | 8639 | { |
348d480f | 8640 | b->ops->print_mention (b); |
112e8700 | 8641 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8642 | return; |
c906108c SS |
8643 | printf_filtered ("\n"); |
8644 | } | |
c906108c | 8645 | \f |
c5aa993b | 8646 | |
1a853c52 PA |
8647 | static int bp_loc_is_permanent (struct bp_location *loc); |
8648 | ||
0d381245 | 8649 | static struct bp_location * |
39d61571 | 8650 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8651 | const struct symtab_and_line *sal) |
8652 | { | |
8653 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8654 | CORE_ADDR adjusted_address; |
8655 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8656 | ||
8657 | if (loc_gdbarch == NULL) | |
8658 | loc_gdbarch = b->gdbarch; | |
8659 | ||
8660 | /* Adjust the breakpoint's address prior to allocating a location. | |
8661 | Once we call allocate_bp_location(), that mostly uninitialized | |
8662 | location will be placed on the location chain. Adjustment of the | |
8663 | breakpoint may cause target_read_memory() to be called and we do | |
8664 | not want its scan of the location chain to find a breakpoint and | |
8665 | location that's only been partially initialized. */ | |
8666 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8667 | sal->pc, b->type); | |
0d381245 | 8668 | |
d30113d4 | 8669 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8670 | loc = allocate_bp_location (b); |
d30113d4 JK |
8671 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8672 | tmp = &((*tmp)->next)) | |
0d381245 | 8673 | ; |
d30113d4 | 8674 | loc->next = *tmp; |
0d381245 | 8675 | *tmp = loc; |
3742cc8b | 8676 | |
0d381245 | 8677 | loc->requested_address = sal->pc; |
3742cc8b | 8678 | loc->address = adjusted_address; |
6c95b8df | 8679 | loc->pspace = sal->pspace; |
935676c9 | 8680 | loc->probe.prob = sal->prob; |
729662a5 | 8681 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8682 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8683 | loc->section = sal->section; |
3742cc8b | 8684 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8685 | loc->line_number = sal->line; |
2f202fde | 8686 | loc->symtab = sal->symtab; |
4a27f119 | 8687 | loc->symbol = sal->symbol; |
f8eba3c6 | 8688 | |
0e30163f JK |
8689 | set_breakpoint_location_function (loc, |
8690 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8691 | |
6ae88661 LM |
8692 | /* While by definition, permanent breakpoints are already present in the |
8693 | code, we don't mark the location as inserted. Normally one would expect | |
8694 | that GDB could rely on that breakpoint instruction to stop the program, | |
8695 | thus removing the need to insert its own breakpoint, except that executing | |
8696 | the breakpoint instruction can kill the target instead of reporting a | |
8697 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8698 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8699 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8700 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8701 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8702 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8703 | it manually increments the PC, thus avoiding executing the breakpoint | |
8704 | instruction.) */ | |
1a853c52 | 8705 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8706 | loc->permanent = 1; |
1a853c52 | 8707 | |
0d381245 VP |
8708 | return loc; |
8709 | } | |
514f746b AR |
8710 | \f |
8711 | ||
1cf4d951 | 8712 | /* See breakpoint.h. */ |
514f746b | 8713 | |
1cf4d951 PA |
8714 | int |
8715 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8716 | { |
8717 | int len; | |
8718 | CORE_ADDR addr; | |
1afeeb75 | 8719 | const gdb_byte *bpoint; |
514f746b AR |
8720 | gdb_byte *target_mem; |
8721 | ||
1cf4d951 PA |
8722 | addr = address; |
8723 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8724 | ||
8725 | /* Software breakpoints unsupported? */ | |
8726 | if (bpoint == NULL) | |
8727 | return 0; | |
8728 | ||
224c3ddb | 8729 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8730 | |
8731 | /* Enable the automatic memory restoration from breakpoints while | |
8732 | we read the memory. Otherwise we could say about our temporary | |
8733 | breakpoints they are permanent. */ | |
cb85b21b TT |
8734 | scoped_restore restore_memory |
8735 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8736 | |
8737 | if (target_read_memory (address, target_mem, len) == 0 | |
8738 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8739 | return 1; |
1cf4d951 | 8740 | |
cb85b21b | 8741 | return 0; |
1cf4d951 PA |
8742 | } |
8743 | ||
8744 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8745 | return 0 otherwise. */ | |
8746 | ||
8747 | static int | |
8748 | bp_loc_is_permanent (struct bp_location *loc) | |
8749 | { | |
514f746b AR |
8750 | gdb_assert (loc != NULL); |
8751 | ||
244558af LM |
8752 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8753 | attempt to read from the addresses the locations of these breakpoint types | |
8754 | point to. program_breakpoint_here_p, below, will attempt to read | |
8755 | memory. */ | |
8756 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8757 | return 0; | |
8758 | ||
5ed8105e | 8759 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8760 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8761 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8762 | } |
8763 | ||
e7e0cddf SS |
8764 | /* Build a command list for the dprintf corresponding to the current |
8765 | settings of the dprintf style options. */ | |
8766 | ||
8767 | static void | |
8768 | update_dprintf_command_list (struct breakpoint *b) | |
8769 | { | |
8770 | char *dprintf_args = b->extra_string; | |
8771 | char *printf_line = NULL; | |
8772 | ||
8773 | if (!dprintf_args) | |
8774 | return; | |
8775 | ||
8776 | dprintf_args = skip_spaces (dprintf_args); | |
8777 | ||
8778 | /* Allow a comma, as it may have terminated a location, but don't | |
8779 | insist on it. */ | |
8780 | if (*dprintf_args == ',') | |
8781 | ++dprintf_args; | |
8782 | dprintf_args = skip_spaces (dprintf_args); | |
8783 | ||
8784 | if (*dprintf_args != '"') | |
8785 | error (_("Bad format string, missing '\"'.")); | |
8786 | ||
d3ce09f5 | 8787 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8788 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8789 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8790 | { |
8791 | if (!dprintf_function) | |
8792 | error (_("No function supplied for dprintf call")); | |
8793 | ||
8794 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8795 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8796 | dprintf_function, | |
8797 | dprintf_channel, | |
8798 | dprintf_args); | |
8799 | else | |
8800 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8801 | dprintf_function, | |
8802 | dprintf_args); | |
8803 | } | |
d3ce09f5 SS |
8804 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8805 | { | |
8806 | if (target_can_run_breakpoint_commands ()) | |
8807 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8808 | else | |
8809 | { | |
8810 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8811 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8812 | } | |
8813 | } | |
e7e0cddf SS |
8814 | else |
8815 | internal_error (__FILE__, __LINE__, | |
8816 | _("Invalid dprintf style.")); | |
8817 | ||
f28045c2 | 8818 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8819 | /* Manufacture a printf sequence. */ |
f28045c2 | 8820 | { |
8d749320 | 8821 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8822 | |
f28045c2 YQ |
8823 | printf_cmd_line->control_type = simple_control; |
8824 | printf_cmd_line->body_count = 0; | |
8825 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8826 | printf_cmd_line->next = NULL; |
f28045c2 | 8827 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8828 | |
93921405 | 8829 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8830 | } |
e7e0cddf SS |
8831 | } |
8832 | ||
8833 | /* Update all dprintf commands, making their command lists reflect | |
8834 | current style settings. */ | |
8835 | ||
8836 | static void | |
eb4c3f4a | 8837 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8838 | struct cmd_list_element *c) |
8839 | { | |
8840 | struct breakpoint *b; | |
8841 | ||
8842 | ALL_BREAKPOINTS (b) | |
8843 | { | |
8844 | if (b->type == bp_dprintf) | |
8845 | update_dprintf_command_list (b); | |
8846 | } | |
8847 | } | |
c3f6f71d | 8848 | |
f00aae0f KS |
8849 | /* Create a breakpoint with SAL as location. Use LOCATION |
8850 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8851 | as condition expression. If LOCATION is NULL then create an |
8852 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8853 | |
8854 | static void | |
d9b3f62e | 8855 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8856 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8857 | event_location_up &&location, |
e1e01040 PA |
8858 | gdb::unique_xmalloc_ptr<char> filter, |
8859 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8860 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8861 | enum bptype type, enum bpdisp disposition, |
8862 | int thread, int task, int ignore_count, | |
c0a91b2b | 8863 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8864 | int enabled, int internal, unsigned flags, |
8865 | int display_canonical) | |
018d34a4 | 8866 | { |
0d381245 | 8867 | int i; |
018d34a4 VP |
8868 | |
8869 | if (type == bp_hardware_breakpoint) | |
8870 | { | |
fbbd034e AS |
8871 | int target_resources_ok; |
8872 | ||
8873 | i = hw_breakpoint_used_count (); | |
8874 | target_resources_ok = | |
8875 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8876 | i + 1, 0); |
8877 | if (target_resources_ok == 0) | |
8878 | error (_("No hardware breakpoint support in the target.")); | |
8879 | else if (target_resources_ok < 0) | |
8880 | error (_("Hardware breakpoints used exceeds limit.")); | |
8881 | } | |
8882 | ||
6c5b2ebe | 8883 | gdb_assert (!sals.empty ()); |
6c95b8df | 8884 | |
6c5b2ebe | 8885 | for (const auto &sal : sals) |
0d381245 | 8886 | { |
0d381245 VP |
8887 | struct bp_location *loc; |
8888 | ||
8889 | if (from_tty) | |
5af949e3 UW |
8890 | { |
8891 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8892 | if (!loc_gdbarch) | |
8893 | loc_gdbarch = gdbarch; | |
8894 | ||
8895 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8896 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8897 | } |
0d381245 | 8898 | |
6c5b2ebe | 8899 | if (&sal == &sals[0]) |
0d381245 | 8900 | { |
d9b3f62e | 8901 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8902 | b->thread = thread; |
4a306c9a | 8903 | b->task = task; |
855a6e68 | 8904 | |
e1e01040 PA |
8905 | b->cond_string = cond_string.release (); |
8906 | b->extra_string = extra_string.release (); | |
0d381245 | 8907 | b->ignore_count = ignore_count; |
41447f92 | 8908 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8909 | b->disposition = disposition; |
6c95b8df | 8910 | |
44f238bb PA |
8911 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8912 | b->loc->inserted = 1; | |
8913 | ||
0fb4aa4b PA |
8914 | if (type == bp_static_tracepoint) |
8915 | { | |
d9b3f62e | 8916 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8917 | struct static_tracepoint_marker marker; |
8918 | ||
983af33b | 8919 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8920 | { |
8921 | /* We already know the marker exists, otherwise, we | |
8922 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8923 | const char *p |
8924 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8925 | const char *endp; |
0fb4aa4b | 8926 | char *marker_str; |
0fb4aa4b | 8927 | |
f1735a53 | 8928 | p = skip_spaces (p); |
0fb4aa4b | 8929 | |
f1735a53 | 8930 | endp = skip_to_space (p); |
0fb4aa4b PA |
8931 | |
8932 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8933 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8934 | |
3e43a32a MS |
8935 | printf_filtered (_("Probed static tracepoint " |
8936 | "marker \"%s\"\n"), | |
d9b3f62e | 8937 | t->static_trace_marker_id); |
0fb4aa4b PA |
8938 | } |
8939 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8940 | { | |
d9b3f62e | 8941 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8942 | release_static_tracepoint_marker (&marker); |
8943 | ||
3e43a32a MS |
8944 | printf_filtered (_("Probed static tracepoint " |
8945 | "marker \"%s\"\n"), | |
d9b3f62e | 8946 | t->static_trace_marker_id); |
0fb4aa4b PA |
8947 | } |
8948 | else | |
3e43a32a MS |
8949 | warning (_("Couldn't determine the static " |
8950 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8951 | } |
8952 | ||
0d381245 VP |
8953 | loc = b->loc; |
8954 | } | |
8955 | else | |
018d34a4 | 8956 | { |
39d61571 | 8957 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8958 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8959 | loc->inserted = 1; | |
0d381245 VP |
8960 | } |
8961 | ||
8962 | if (b->cond_string) | |
8963 | { | |
bbc13ae3 KS |
8964 | const char *arg = b->cond_string; |
8965 | ||
1bb9788d TT |
8966 | loc->cond = parse_exp_1 (&arg, loc->address, |
8967 | block_for_pc (loc->address), 0); | |
0d381245 | 8968 | if (*arg) |
588ae58c | 8969 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8970 | } |
e7e0cddf SS |
8971 | |
8972 | /* Dynamic printf requires and uses additional arguments on the | |
8973 | command line, otherwise it's an error. */ | |
8974 | if (type == bp_dprintf) | |
8975 | { | |
8976 | if (b->extra_string) | |
8977 | update_dprintf_command_list (b); | |
8978 | else | |
8979 | error (_("Format string required")); | |
8980 | } | |
8981 | else if (b->extra_string) | |
588ae58c | 8982 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8983 | } |
018d34a4 | 8984 | |
56435ebe | 8985 | b->display_canonical = display_canonical; |
f00aae0f | 8986 | if (location != NULL) |
d28cd78a | 8987 | b->location = std::move (location); |
018d34a4 | 8988 | else |
d28cd78a | 8989 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8990 | b->filter = filter.release (); |
d9b3f62e | 8991 | } |
018d34a4 | 8992 | |
d9b3f62e PA |
8993 | static void |
8994 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8995 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8996 | event_location_up &&location, |
e1e01040 PA |
8997 | gdb::unique_xmalloc_ptr<char> filter, |
8998 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8999 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9000 | enum bptype type, enum bpdisp disposition, |
9001 | int thread, int task, int ignore_count, | |
c0a91b2b | 9002 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9003 | int enabled, int internal, unsigned flags, |
9004 | int display_canonical) | |
d9b3f62e | 9005 | { |
a5e364af | 9006 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9007 | |
a5e364af | 9008 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9009 | sals, std::move (location), |
e1e01040 PA |
9010 | std::move (filter), |
9011 | std::move (cond_string), | |
9012 | std::move (extra_string), | |
d9b3f62e PA |
9013 | type, disposition, |
9014 | thread, task, ignore_count, | |
9015 | ops, from_tty, | |
44f238bb PA |
9016 | enabled, internal, flags, |
9017 | display_canonical); | |
d9b3f62e | 9018 | |
b270e6f9 | 9019 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9020 | } |
9021 | ||
9022 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9023 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9024 | value. COND_STRING, if not NULL, specified the condition to be | |
9025 | used for all breakpoints. Essentially the only case where | |
9026 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9027 | function. In that case, it's still not possible to specify | |
9028 | separate conditions for different overloaded functions, so | |
9029 | we take just a single condition string. | |
9030 | ||
c3f6f71d | 9031 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9032 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9033 | array contents). If the function fails (error() is called), the |
9034 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9035 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9036 | |
9037 | static void | |
8cdf0e15 | 9038 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9039 | struct linespec_result *canonical, |
e1e01040 PA |
9040 | gdb::unique_xmalloc_ptr<char> cond_string, |
9041 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9042 | enum bptype type, enum bpdisp disposition, |
9043 | int thread, int task, int ignore_count, | |
c0a91b2b | 9044 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9045 | int enabled, int internal, unsigned flags) |
c906108c | 9046 | { |
f8eba3c6 | 9047 | if (canonical->pre_expanded) |
6c5b2ebe | 9048 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9049 | |
6c5b2ebe | 9050 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9051 | { |
f00aae0f | 9052 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9053 | 'break', without arguments. */ |
ffc2605c | 9054 | event_location_up location |
f00aae0f | 9055 | = (canonical->location != NULL |
8e9e35b1 | 9056 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9057 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9058 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9059 | |
6c5b2ebe | 9060 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9061 | std::move (location), |
e1e01040 PA |
9062 | std::move (filter_string), |
9063 | std::move (cond_string), | |
9064 | std::move (extra_string), | |
e7e0cddf | 9065 | type, disposition, |
84f4c1fe | 9066 | thread, task, ignore_count, ops, |
44f238bb | 9067 | from_tty, enabled, internal, flags, |
56435ebe | 9068 | canonical->special_display); |
c3f6f71d | 9069 | } |
c3f6f71d | 9070 | } |
c906108c | 9071 | |
f00aae0f | 9072 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9073 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9074 | addresses found. LOCATION points to the end of the SAL (for |
9075 | linespec locations). | |
9998af43 TJB |
9076 | |
9077 | The array and the line spec strings are allocated on the heap, it is | |
9078 | the caller's responsibility to free them. */ | |
c906108c | 9079 | |
b9362cc7 | 9080 | static void |
f00aae0f | 9081 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9082 | struct linespec_result *canonical) |
c3f6f71d | 9083 | { |
f00aae0f KS |
9084 | struct symtab_and_line cursal; |
9085 | ||
9086 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9087 | { | |
a20714ff | 9088 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9089 | |
a20714ff | 9090 | if (spec == NULL) |
f00aae0f KS |
9091 | { |
9092 | /* The last displayed codepoint, if it's valid, is our default | |
9093 | breakpoint address. */ | |
9094 | if (last_displayed_sal_is_valid ()) | |
9095 | { | |
f00aae0f KS |
9096 | /* Set sal's pspace, pc, symtab, and line to the values |
9097 | corresponding to the last call to print_frame_info. | |
9098 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9099 | as the breakpoint line number is inappropriate otherwise. | |
9100 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9101 | symtab_and_line sal = get_last_displayed_sal (); |
9102 | CORE_ADDR pc = sal.pc; | |
9103 | ||
f00aae0f KS |
9104 | sal = find_pc_line (pc, 0); |
9105 | ||
9106 | /* "break" without arguments is equivalent to "break *PC" | |
9107 | where PC is the last displayed codepoint's address. So | |
9108 | make sure to set sal.explicit_pc to prevent GDB from | |
9109 | trying to expand the list of sals to include all other | |
9110 | instances with the same symtab and line. */ | |
9111 | sal.pc = pc; | |
9112 | sal.explicit_pc = 1; | |
9113 | ||
6c5b2ebe PA |
9114 | struct linespec_sals lsal; |
9115 | lsal.sals = {sal}; | |
f00aae0f KS |
9116 | lsal.canonical = NULL; |
9117 | ||
6c5b2ebe | 9118 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9119 | return; |
9120 | } | |
9121 | else | |
9122 | error (_("No default breakpoint address now.")); | |
c906108c | 9123 | } |
c906108c | 9124 | } |
f00aae0f KS |
9125 | |
9126 | /* Force almost all breakpoints to be in terms of the | |
9127 | current_source_symtab (which is decode_line_1's default). | |
9128 | This should produce the results we want almost all of the | |
9129 | time while leaving default_breakpoint_* alone. | |
9130 | ||
9131 | ObjC: However, don't match an Objective-C method name which | |
9132 | may have a '+' or '-' succeeded by a '['. */ | |
9133 | cursal = get_current_source_symtab_and_line (); | |
9134 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9135 | { |
a20714ff | 9136 | const char *spec = NULL; |
cc80f267 | 9137 | |
f00aae0f | 9138 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9139 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9140 | |
f00aae0f | 9141 | if (!cursal.symtab |
a20714ff PA |
9142 | || (spec != NULL |
9143 | && strchr ("+-", spec[0]) != NULL | |
9144 | && spec[1] != '[')) | |
f00aae0f | 9145 | { |
c2f4122d | 9146 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9147 | get_last_displayed_symtab (), |
9148 | get_last_displayed_line (), | |
9149 | canonical, NULL, NULL); | |
9150 | return; | |
9151 | } | |
c906108c | 9152 | } |
f00aae0f | 9153 | |
c2f4122d | 9154 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9155 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9156 | } |
c906108c | 9157 | |
c906108c | 9158 | |
c3f6f71d | 9159 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9160 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9161 | |
b9362cc7 | 9162 | static void |
6c5b2ebe | 9163 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9164 | { |
6c5b2ebe PA |
9165 | for (auto &sal : sals) |
9166 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9167 | } |
9168 | ||
7a697b8d SS |
9169 | /* Fast tracepoints may have restrictions on valid locations. For |
9170 | instance, a fast tracepoint using a jump instead of a trap will | |
9171 | likely have to overwrite more bytes than a trap would, and so can | |
9172 | only be placed where the instruction is longer than the jump, or a | |
9173 | multi-instruction sequence does not have a jump into the middle of | |
9174 | it, etc. */ | |
9175 | ||
9176 | static void | |
9177 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9178 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9179 | { |
6c5b2ebe | 9180 | int rslt; |
7a697b8d SS |
9181 | char *msg; |
9182 | struct cleanup *old_chain; | |
9183 | ||
6c5b2ebe | 9184 | for (const auto &sal : sals) |
7a697b8d | 9185 | { |
f8eba3c6 TT |
9186 | struct gdbarch *sarch; |
9187 | ||
6c5b2ebe | 9188 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9189 | /* We fall back to GDBARCH if there is no architecture |
9190 | associated with SAL. */ | |
9191 | if (sarch == NULL) | |
9192 | sarch = gdbarch; | |
6c5b2ebe | 9193 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9194 | old_chain = make_cleanup (xfree, msg); |
9195 | ||
9196 | if (!rslt) | |
53c3572a | 9197 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9198 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9199 | |
9200 | do_cleanups (old_chain); | |
9201 | } | |
9202 | } | |
9203 | ||
018d34a4 VP |
9204 | /* Given TOK, a string specification of condition and thread, as |
9205 | accepted by the 'break' command, extract the condition | |
9206 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9207 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9208 | If no condition is found, *COND_STRING is set to NULL. |
9209 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9210 | |
9211 | static void | |
bbc13ae3 | 9212 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9213 | char **cond_string, int *thread, int *task, |
9214 | char **rest) | |
018d34a4 VP |
9215 | { |
9216 | *cond_string = NULL; | |
9217 | *thread = -1; | |
ed1d1739 KS |
9218 | *task = 0; |
9219 | *rest = NULL; | |
9220 | ||
018d34a4 VP |
9221 | while (tok && *tok) |
9222 | { | |
bbc13ae3 | 9223 | const char *end_tok; |
018d34a4 | 9224 | int toklen; |
bbc13ae3 KS |
9225 | const char *cond_start = NULL; |
9226 | const char *cond_end = NULL; | |
cc59ec59 | 9227 | |
f1735a53 | 9228 | tok = skip_spaces (tok); |
e7e0cddf SS |
9229 | |
9230 | if ((*tok == '"' || *tok == ',') && rest) | |
9231 | { | |
9232 | *rest = savestring (tok, strlen (tok)); | |
9233 | return; | |
9234 | } | |
9235 | ||
f1735a53 | 9236 | end_tok = skip_to_space (tok); |
d634f2de | 9237 | |
018d34a4 | 9238 | toklen = end_tok - tok; |
d634f2de | 9239 | |
018d34a4 VP |
9240 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9241 | { | |
9242 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9243 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9244 | cond_end = tok; |
d634f2de | 9245 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9246 | } |
9247 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9248 | { | |
5d5658a1 PA |
9249 | const char *tmptok; |
9250 | struct thread_info *thr; | |
d634f2de | 9251 | |
018d34a4 | 9252 | tok = end_tok + 1; |
5d5658a1 | 9253 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9254 | if (tok == tmptok) |
9255 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9256 | *thread = thr->global_num; |
bbc13ae3 | 9257 | tok = tmptok; |
018d34a4 | 9258 | } |
4a306c9a JB |
9259 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9260 | { | |
9261 | char *tmptok; | |
9262 | ||
9263 | tok = end_tok + 1; | |
bbc13ae3 | 9264 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9265 | if (tok == tmptok) |
9266 | error (_("Junk after task keyword.")); | |
9267 | if (!valid_task_id (*task)) | |
b6199126 | 9268 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9269 | tok = tmptok; |
4a306c9a | 9270 | } |
e7e0cddf SS |
9271 | else if (rest) |
9272 | { | |
9273 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9274 | return; |
e7e0cddf | 9275 | } |
018d34a4 VP |
9276 | else |
9277 | error (_("Junk at end of arguments.")); | |
9278 | } | |
9279 | } | |
9280 | ||
0fb4aa4b PA |
9281 | /* Decode a static tracepoint marker spec. */ |
9282 | ||
6c5b2ebe | 9283 | static std::vector<symtab_and_line> |
f00aae0f | 9284 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9285 | { |
9286 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
f00aae0f KS |
9287 | const char *p = &(*arg_p)[3]; |
9288 | const char *endp; | |
0fb4aa4b PA |
9289 | int i; |
9290 | ||
f1735a53 | 9291 | p = skip_spaces (p); |
0fb4aa4b | 9292 | |
f1735a53 | 9293 | endp = skip_to_space (p); |
0fb4aa4b | 9294 | |
81b1e71c | 9295 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9296 | |
81b1e71c | 9297 | markers = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); |
0fb4aa4b | 9298 | if (VEC_empty(static_tracepoint_marker_p, markers)) |
81b1e71c TT |
9299 | error (_("No known static tracepoint marker named %s"), |
9300 | marker_str.c_str ()); | |
0fb4aa4b | 9301 | |
6c5b2ebe PA |
9302 | std::vector<symtab_and_line> sals; |
9303 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9304 | |
6c5b2ebe | 9305 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9306 | { |
9307 | struct static_tracepoint_marker *marker; | |
9308 | ||
9309 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9310 | ||
51abb421 | 9311 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9312 | sal.pc = marker->address; |
9313 | sals.push_back (sal); | |
0fb4aa4b PA |
9314 | |
9315 | release_static_tracepoint_marker (marker); | |
9316 | } | |
9317 | ||
0fb4aa4b PA |
9318 | *arg_p = endp; |
9319 | return sals; | |
9320 | } | |
9321 | ||
f00aae0f | 9322 | /* See breakpoint.h. */ |
0101ce28 | 9323 | |
8cdf0e15 VP |
9324 | int |
9325 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9326 | const struct event_location *location, |
9327 | const char *cond_string, | |
9328 | int thread, const char *extra_string, | |
f00aae0f | 9329 | int parse_extra, |
0fb4aa4b | 9330 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9331 | int ignore_count, |
9332 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9333 | const struct breakpoint_ops *ops, |
44f238bb PA |
9334 | int from_tty, int enabled, int internal, |
9335 | unsigned flags) | |
c3f6f71d | 9336 | { |
7efd8fc2 | 9337 | struct linespec_result canonical; |
80c99de1 | 9338 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9339 | int pending = 0; |
4a306c9a | 9340 | int task = 0; |
86b17b60 | 9341 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9342 | |
348d480f PA |
9343 | gdb_assert (ops != NULL); |
9344 | ||
f00aae0f KS |
9345 | /* If extra_string isn't useful, set it to NULL. */ |
9346 | if (extra_string != NULL && *extra_string == '\0') | |
9347 | extra_string = NULL; | |
9348 | ||
492d29ea | 9349 | TRY |
b78a6381 | 9350 | { |
f00aae0f | 9351 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9352 | } |
492d29ea | 9353 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9354 | { |
492d29ea PA |
9355 | /* If caller is interested in rc value from parse, set |
9356 | value. */ | |
9357 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9358 | { |
05ff989b AC |
9359 | /* If pending breakpoint support is turned off, throw |
9360 | error. */ | |
fa8d40ab JJ |
9361 | |
9362 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9363 | throw_exception (e); |
9364 | ||
9365 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9366 | |
05ff989b AC |
9367 | /* If pending breakpoint support is auto query and the user |
9368 | selects no, then simply return the error code. */ | |
059fb39f | 9369 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9370 | && !nquery (_("Make %s pending on future shared library load? "), |
9371 | bptype_string (type_wanted))) | |
fd9b8c24 | 9372 | return 0; |
fa8d40ab | 9373 | |
05ff989b AC |
9374 | /* At this point, either the user was queried about setting |
9375 | a pending breakpoint and selected yes, or pending | |
9376 | breakpoint behavior is on and thus a pending breakpoint | |
9377 | is defaulted on behalf of the user. */ | |
f00aae0f | 9378 | pending = 1; |
0101ce28 | 9379 | } |
492d29ea PA |
9380 | else |
9381 | throw_exception (e); | |
0101ce28 | 9382 | } |
492d29ea PA |
9383 | END_CATCH |
9384 | ||
6c5b2ebe | 9385 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9386 | return 0; |
c3f6f71d | 9387 | |
c3f6f71d JM |
9388 | /* ----------------------------- SNIP ----------------------------- |
9389 | Anything added to the cleanup chain beyond this point is assumed | |
9390 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9391 | then the memory is not reclaimed. */ |
9392 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9393 | |
c3f6f71d JM |
9394 | /* Resolve all line numbers to PC's and verify that the addresses |
9395 | are ok for the target. */ | |
0101ce28 | 9396 | if (!pending) |
f8eba3c6 | 9397 | { |
6c5b2ebe PA |
9398 | for (auto &lsal : canonical.lsals) |
9399 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9400 | } |
c3f6f71d | 9401 | |
7a697b8d | 9402 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9403 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9404 | { |
6c5b2ebe PA |
9405 | for (const auto &lsal : canonical.lsals) |
9406 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9407 | } |
7a697b8d | 9408 | |
c3f6f71d JM |
9409 | /* Verify that condition can be parsed, before setting any |
9410 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9411 | breakpoint. */ |
0101ce28 | 9412 | if (!pending) |
c3f6f71d | 9413 | { |
e1e01040 PA |
9414 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9415 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9416 | ||
f00aae0f | 9417 | if (parse_extra) |
72b2ff0e | 9418 | { |
0878d0fa | 9419 | char *rest; |
e1e01040 | 9420 | char *cond; |
52d361e1 | 9421 | |
6c5b2ebe | 9422 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9423 | |
0878d0fa YQ |
9424 | /* Here we only parse 'arg' to separate condition |
9425 | from thread number, so parsing in context of first | |
9426 | sal is OK. When setting the breakpoint we'll | |
9427 | re-parse it in context of each sal. */ | |
9428 | ||
6c5b2ebe | 9429 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9430 | &cond, &thread, &task, &rest); |
9431 | cond_string_copy.reset (cond); | |
9432 | extra_string_copy.reset (rest); | |
72b2ff0e | 9433 | } |
2f069f6f | 9434 | else |
72b2ff0e | 9435 | { |
f00aae0f KS |
9436 | if (type_wanted != bp_dprintf |
9437 | && extra_string != NULL && *extra_string != '\0') | |
9438 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9439 | |
9440 | /* Create a private copy of condition string. */ | |
9441 | if (cond_string) | |
e1e01040 | 9442 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9443 | /* Create a private copy of any extra string. */ |
9444 | if (extra_string) | |
e1e01040 | 9445 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9446 | } |
0fb4aa4b | 9447 | |
52d361e1 | 9448 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9449 | std::move (cond_string_copy), |
9450 | std::move (extra_string_copy), | |
9451 | type_wanted, | |
d9b3f62e PA |
9452 | tempflag ? disp_del : disp_donttouch, |
9453 | thread, task, ignore_count, ops, | |
44f238bb | 9454 | from_tty, enabled, internal, flags); |
c906108c | 9455 | } |
0101ce28 JJ |
9456 | else |
9457 | { | |
a5e364af | 9458 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9459 | |
a5e364af | 9460 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9461 | b->location = copy_event_location (location); |
bfccc43c | 9462 | |
f00aae0f KS |
9463 | if (parse_extra) |
9464 | b->cond_string = NULL; | |
e12c7713 MK |
9465 | else |
9466 | { | |
9467 | /* Create a private copy of condition string. */ | |
e1e01040 | 9468 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9469 | b->thread = thread; |
e12c7713 | 9470 | } |
f00aae0f KS |
9471 | |
9472 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9473 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9474 | b->ignore_count = ignore_count; |
0101ce28 | 9475 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9476 | b->condition_not_parsed = 1; |
41447f92 | 9477 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9478 | if ((type_wanted != bp_breakpoint |
9479 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9480 | b->pspace = current_program_space; |
8bea4e01 | 9481 | |
b270e6f9 | 9482 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9483 | } |
9484 | ||
6c5b2ebe | 9485 | if (canonical.lsals.size () > 1) |
95a42b64 | 9486 | { |
3e43a32a MS |
9487 | warning (_("Multiple breakpoints were set.\nUse the " |
9488 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9489 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9490 | } |
9491 | ||
80c99de1 PA |
9492 | /* That's it. Discard the cleanups for data inserted into the |
9493 | breakpoint. */ | |
9494 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9495 | |
80c99de1 | 9496 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9497 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9498 | |
9499 | return 1; | |
c3f6f71d | 9500 | } |
c906108c | 9501 | |
348d480f | 9502 | /* Set a breakpoint. |
72b2ff0e VP |
9503 | ARG is a string describing breakpoint address, |
9504 | condition, and thread. | |
9505 | FLAG specifies if a breakpoint is hardware on, | |
9506 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9507 | and BP_TEMPFLAG. */ | |
348d480f | 9508 | |
98deb0da | 9509 | static void |
f2fc3015 | 9510 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9511 | { |
72b2ff0e | 9512 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9513 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9514 | ? bp_hardware_breakpoint | |
9515 | : bp_breakpoint); | |
55aa24fb | 9516 | struct breakpoint_ops *ops; |
f00aae0f | 9517 | |
ffc2605c | 9518 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9519 | |
9520 | /* Matching breakpoints on probes. */ | |
5b56227b | 9521 | if (location != NULL |
ffc2605c | 9522 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9523 | ops = &bkpt_probe_breakpoint_ops; |
9524 | else | |
9525 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9526 | |
8cdf0e15 | 9527 | create_breakpoint (get_current_arch (), |
ffc2605c | 9528 | location.get (), |
f00aae0f | 9529 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9530 | tempflag, type_wanted, |
8cdf0e15 VP |
9531 | 0 /* Ignore count */, |
9532 | pending_break_support, | |
55aa24fb | 9533 | ops, |
8cdf0e15 | 9534 | from_tty, |
84f4c1fe | 9535 | 1 /* enabled */, |
44f238bb PA |
9536 | 0 /* internal */, |
9537 | 0); | |
c906108c SS |
9538 | } |
9539 | ||
c906108c SS |
9540 | /* Helper function for break_command_1 and disassemble_command. */ |
9541 | ||
9542 | void | |
fba45db2 | 9543 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9544 | { |
9545 | CORE_ADDR pc; | |
9546 | ||
9547 | if (sal->pc == 0 && sal->symtab != NULL) | |
9548 | { | |
9549 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9550 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9551 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9552 | sal->pc = pc; |
6a048695 | 9553 | |
4a64f543 MS |
9554 | /* If this SAL corresponds to a breakpoint inserted using a line |
9555 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9556 | if (sal->explicit_line) |
059acae7 | 9557 | skip_prologue_sal (sal); |
c906108c SS |
9558 | } |
9559 | ||
9560 | if (sal->section == 0 && sal->symtab != NULL) | |
9561 | { | |
346d1dfe | 9562 | const struct blockvector *bv; |
3977b71f | 9563 | const struct block *b; |
c5aa993b | 9564 | struct symbol *sym; |
c906108c | 9565 | |
43f3e411 DE |
9566 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9567 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9568 | if (bv != NULL) |
9569 | { | |
7f0df278 | 9570 | sym = block_linkage_function (b); |
c906108c SS |
9571 | if (sym != NULL) |
9572 | { | |
eb822aa6 DE |
9573 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9574 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9575 | sym); | |
c906108c SS |
9576 | } |
9577 | else | |
9578 | { | |
4a64f543 MS |
9579 | /* It really is worthwhile to have the section, so we'll |
9580 | just have to look harder. This case can be executed | |
9581 | if we have line numbers but no functions (as can | |
9582 | happen in assembly source). */ | |
c906108c | 9583 | |
5ed8105e | 9584 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9585 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9586 | |
5ed8105e | 9587 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9588 | if (msym.minsym) |
efd66ac6 | 9589 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9590 | } |
9591 | } | |
9592 | } | |
9593 | } | |
9594 | ||
9595 | void | |
0b39b52e | 9596 | break_command (const char *arg, int from_tty) |
c906108c | 9597 | { |
db107f19 | 9598 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9599 | } |
9600 | ||
c906108c | 9601 | void |
0b39b52e | 9602 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9603 | { |
db107f19 | 9604 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9605 | } |
9606 | ||
c906108c | 9607 | static void |
0b39b52e | 9608 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9609 | { |
db107f19 | 9610 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9611 | } |
9612 | ||
9613 | static void | |
0b39b52e | 9614 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9615 | { |
db107f19 | 9616 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9617 | } |
9618 | ||
9619 | static void | |
ee7ddd71 | 9620 | stop_command (const char *arg, int from_tty) |
c906108c | 9621 | { |
a3f17187 | 9622 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9623 | Usage: stop in <function | address>\n\ |
a3f17187 | 9624 | stop at <line>\n")); |
c906108c SS |
9625 | } |
9626 | ||
9627 | static void | |
4495129a | 9628 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9629 | { |
9630 | int badInput = 0; | |
9631 | ||
c5aa993b | 9632 | if (arg == (char *) NULL) |
c906108c SS |
9633 | badInput = 1; |
9634 | else if (*arg != '*') | |
9635 | { | |
4495129a | 9636 | const char *argptr = arg; |
c906108c SS |
9637 | int hasColon = 0; |
9638 | ||
4a64f543 | 9639 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9640 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9641 | function/method name. */ |
c906108c | 9642 | while (*argptr && !hasColon) |
c5aa993b JM |
9643 | { |
9644 | hasColon = (*argptr == ':'); | |
9645 | argptr++; | |
9646 | } | |
c906108c SS |
9647 | |
9648 | if (hasColon) | |
c5aa993b | 9649 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9650 | else |
c5aa993b | 9651 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9652 | } |
9653 | ||
9654 | if (badInput) | |
a3f17187 | 9655 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9656 | else |
db107f19 | 9657 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9658 | } |
9659 | ||
9660 | static void | |
4495129a | 9661 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9662 | { |
9663 | int badInput = 0; | |
9664 | ||
c5aa993b | 9665 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9666 | badInput = 1; |
9667 | else | |
9668 | { | |
4495129a | 9669 | const char *argptr = arg; |
c906108c SS |
9670 | int hasColon = 0; |
9671 | ||
4a64f543 MS |
9672 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9673 | it is probably a line number. */ | |
c906108c | 9674 | while (*argptr && !hasColon) |
c5aa993b JM |
9675 | { |
9676 | hasColon = (*argptr == ':'); | |
9677 | argptr++; | |
9678 | } | |
c906108c SS |
9679 | |
9680 | if (hasColon) | |
c5aa993b | 9681 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9682 | else |
c5aa993b | 9683 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9684 | } |
9685 | ||
9686 | if (badInput) | |
a3f17187 | 9687 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9688 | else |
db107f19 | 9689 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9690 | } |
9691 | ||
e7e0cddf SS |
9692 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9693 | with a prewired command list consisting of a single output command, | |
9694 | built from extra arguments supplied on the dprintf command | |
9695 | line. */ | |
9696 | ||
da821c7b | 9697 | static void |
0b39b52e | 9698 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9699 | { |
ffc2605c | 9700 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9701 | |
9702 | /* If non-NULL, ARG should have been advanced past the location; | |
9703 | the next character must be ','. */ | |
9704 | if (arg != NULL) | |
9705 | { | |
9706 | if (arg[0] != ',' || arg[1] == '\0') | |
9707 | error (_("Format string required")); | |
9708 | else | |
9709 | { | |
9710 | /* Skip the comma. */ | |
9711 | ++arg; | |
9712 | } | |
9713 | } | |
9714 | ||
e7e0cddf | 9715 | create_breakpoint (get_current_arch (), |
ffc2605c | 9716 | location.get (), |
f00aae0f | 9717 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9718 | 0, bp_dprintf, |
9719 | 0 /* Ignore count */, | |
9720 | pending_break_support, | |
9721 | &dprintf_breakpoint_ops, | |
9722 | from_tty, | |
9723 | 1 /* enabled */, | |
9724 | 0 /* internal */, | |
9725 | 0); | |
9726 | } | |
9727 | ||
d3ce09f5 | 9728 | static void |
0b39b52e | 9729 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9730 | { |
9731 | error (_("May only run agent-printf on the target")); | |
9732 | } | |
9733 | ||
f1310107 TJB |
9734 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9735 | ranged breakpoints. */ | |
9736 | ||
9737 | static int | |
9738 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9739 | const address_space *aspace, |
09ac7c10 TT |
9740 | CORE_ADDR bp_addr, |
9741 | const struct target_waitstatus *ws) | |
f1310107 | 9742 | { |
09ac7c10 | 9743 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9744 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9745 | return 0; |
9746 | ||
f1310107 TJB |
9747 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9748 | bl->length, aspace, bp_addr); | |
9749 | } | |
9750 | ||
9751 | /* Implement the "resources_needed" breakpoint_ops method for | |
9752 | ranged breakpoints. */ | |
9753 | ||
9754 | static int | |
9755 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9756 | { | |
9757 | return target_ranged_break_num_registers (); | |
9758 | } | |
9759 | ||
9760 | /* Implement the "print_it" breakpoint_ops method for | |
9761 | ranged breakpoints. */ | |
9762 | ||
9763 | static enum print_stop_action | |
348d480f | 9764 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9765 | { |
348d480f | 9766 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9767 | struct bp_location *bl = b->loc; |
79a45e25 | 9768 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9769 | |
9770 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9771 | ||
9772 | /* Ranged breakpoints have only one location. */ | |
9773 | gdb_assert (bl && bl->next == NULL); | |
9774 | ||
9775 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9776 | |
9777 | maybe_print_thread_hit_breakpoint (uiout); | |
9778 | ||
f1310107 | 9779 | if (b->disposition == disp_del) |
112e8700 | 9780 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9781 | else |
112e8700 SM |
9782 | uiout->text ("Ranged breakpoint "); |
9783 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9784 | { |
112e8700 | 9785 | uiout->field_string ("reason", |
f1310107 | 9786 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9787 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9788 | } |
112e8700 SM |
9789 | uiout->field_int ("bkptno", b->number); |
9790 | uiout->text (", "); | |
f1310107 TJB |
9791 | |
9792 | return PRINT_SRC_AND_LOC; | |
9793 | } | |
9794 | ||
9795 | /* Implement the "print_one" breakpoint_ops method for | |
9796 | ranged breakpoints. */ | |
9797 | ||
9798 | static void | |
9799 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9800 | struct bp_location **last_loc) | |
9801 | { | |
9802 | struct bp_location *bl = b->loc; | |
9803 | struct value_print_options opts; | |
79a45e25 | 9804 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9805 | |
9806 | /* Ranged breakpoints have only one location. */ | |
9807 | gdb_assert (bl && bl->next == NULL); | |
9808 | ||
9809 | get_user_print_options (&opts); | |
9810 | ||
9811 | if (opts.addressprint) | |
9812 | /* We don't print the address range here, it will be printed later | |
9813 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9814 | uiout->field_skip ("addr"); |
f1310107 TJB |
9815 | annotate_field (5); |
9816 | print_breakpoint_location (b, bl); | |
9817 | *last_loc = bl; | |
9818 | } | |
9819 | ||
9820 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9821 | ranged breakpoints. */ | |
9822 | ||
9823 | static void | |
9824 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9825 | struct ui_out *uiout) | |
9826 | { | |
9827 | CORE_ADDR address_start, address_end; | |
9828 | struct bp_location *bl = b->loc; | |
d7e74731 | 9829 | string_file stb; |
f1310107 TJB |
9830 | |
9831 | gdb_assert (bl); | |
9832 | ||
9833 | address_start = bl->address; | |
9834 | address_end = address_start + bl->length - 1; | |
9835 | ||
112e8700 | 9836 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9837 | stb.printf ("[%s, %s]", |
9838 | print_core_address (bl->gdbarch, address_start), | |
9839 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9840 | uiout->field_stream ("addr", stb); |
9841 | uiout->text ("\n"); | |
f1310107 TJB |
9842 | } |
9843 | ||
9844 | /* Implement the "print_mention" breakpoint_ops method for | |
9845 | ranged breakpoints. */ | |
9846 | ||
9847 | static void | |
9848 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9849 | { | |
9850 | struct bp_location *bl = b->loc; | |
79a45e25 | 9851 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9852 | |
9853 | gdb_assert (bl); | |
9854 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9855 | ||
112e8700 | 9856 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9857 | return; |
9858 | ||
9859 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9860 | b->number, paddress (bl->gdbarch, bl->address), | |
9861 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9862 | } | |
9863 | ||
9864 | /* Implement the "print_recreate" breakpoint_ops method for | |
9865 | ranged breakpoints. */ | |
9866 | ||
9867 | static void | |
9868 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9869 | { | |
f00aae0f | 9870 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9871 | event_location_to_string (b->location.get ()), |
9872 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9873 | print_recreate_thread (b, fp); |
f1310107 TJB |
9874 | } |
9875 | ||
9876 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9877 | ||
2060206e | 9878 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9879 | |
9880 | /* Find the address where the end of the breakpoint range should be | |
9881 | placed, given the SAL of the end of the range. This is so that if | |
9882 | the user provides a line number, the end of the range is set to the | |
9883 | last instruction of the given line. */ | |
9884 | ||
9885 | static CORE_ADDR | |
9886 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9887 | { | |
9888 | CORE_ADDR end; | |
9889 | ||
9890 | /* If the user provided a PC value, use it. Otherwise, | |
9891 | find the address of the end of the given location. */ | |
9892 | if (sal.explicit_pc) | |
9893 | end = sal.pc; | |
9894 | else | |
9895 | { | |
9896 | int ret; | |
9897 | CORE_ADDR start; | |
9898 | ||
9899 | ret = find_line_pc_range (sal, &start, &end); | |
9900 | if (!ret) | |
9901 | error (_("Could not find location of the end of the range.")); | |
9902 | ||
9903 | /* find_line_pc_range returns the start of the next line. */ | |
9904 | end--; | |
9905 | } | |
9906 | ||
9907 | return end; | |
9908 | } | |
9909 | ||
9910 | /* Implement the "break-range" CLI command. */ | |
9911 | ||
9912 | static void | |
0b39b52e | 9913 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9914 | { |
f2fc3015 | 9915 | const char *arg_start; |
f1310107 TJB |
9916 | struct linespec_result canonical_start, canonical_end; |
9917 | int bp_count, can_use_bp, length; | |
9918 | CORE_ADDR end; | |
9919 | struct breakpoint *b; | |
f1310107 TJB |
9920 | |
9921 | /* We don't support software ranged breakpoints. */ | |
9922 | if (target_ranged_break_num_registers () < 0) | |
9923 | error (_("This target does not support hardware ranged breakpoints.")); | |
9924 | ||
9925 | bp_count = hw_breakpoint_used_count (); | |
9926 | bp_count += target_ranged_break_num_registers (); | |
9927 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9928 | bp_count, 0); | |
9929 | if (can_use_bp < 0) | |
9930 | error (_("Hardware breakpoints used exceeds limit.")); | |
9931 | ||
f8eba3c6 | 9932 | arg = skip_spaces (arg); |
f1310107 TJB |
9933 | if (arg == NULL || arg[0] == '\0') |
9934 | error(_("No address range specified.")); | |
9935 | ||
f8eba3c6 | 9936 | arg_start = arg; |
ffc2605c TT |
9937 | event_location_up start_location = string_to_event_location (&arg, |
9938 | current_language); | |
9939 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9940 | |
9941 | if (arg[0] != ',') | |
9942 | error (_("Too few arguments.")); | |
6c5b2ebe | 9943 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9944 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9945 | |
6c5b2ebe | 9946 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9947 | |
6c5b2ebe PA |
9948 | if (canonical_start.lsals.size () > 1 |
9949 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9950 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9951 | ||
6c5b2ebe | 9952 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9953 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9954 | |
9955 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9956 | arg = skip_spaces (arg); |
f1310107 TJB |
9957 | |
9958 | /* Parse the end location. */ | |
9959 | ||
f1310107 TJB |
9960 | arg_start = arg; |
9961 | ||
f8eba3c6 | 9962 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9963 | parse_breakpoint_sals because we need to specify the start location's |
9964 | symtab and line as the default symtab and line for the end of the | |
9965 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9966 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9967 | event_location_up end_location = string_to_event_location (&arg, |
9968 | current_language); | |
9969 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9970 | sal_start.symtab, sal_start.line, |
9971 | &canonical_end, NULL, NULL); | |
9972 | ||
6c5b2ebe | 9973 | if (canonical_end.lsals.empty ()) |
f1310107 | 9974 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9975 | |
6c5b2ebe PA |
9976 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9977 | if (canonical_end.lsals.size () > 1 | |
9978 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9979 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9980 | ||
6c5b2ebe | 9981 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9982 | |
9983 | end = find_breakpoint_range_end (sal_end); | |
9984 | if (sal_start.pc > end) | |
177b42fe | 9985 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9986 | |
9987 | length = end - sal_start.pc + 1; | |
9988 | if (length < 0) | |
9989 | /* Length overflowed. */ | |
9990 | error (_("Address range too large.")); | |
9991 | else if (length == 1) | |
9992 | { | |
9993 | /* This range is simple enough to be handled by | |
9994 | the `hbreak' command. */ | |
81b1e71c | 9995 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9996 | |
9997 | return; | |
9998 | } | |
9999 | ||
10000 | /* Now set up the breakpoint. */ | |
10001 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10002 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10003 | set_breakpoint_count (breakpoint_count + 1); |
10004 | b->number = breakpoint_count; | |
10005 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10006 | b->location = std::move (start_location); |
10007 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10008 | b->loc->length = length; |
10009 | ||
f1310107 | 10010 | mention (b); |
8d3788bd | 10011 | observer_notify_breakpoint_created (b); |
44702360 | 10012 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10013 | } |
10014 | ||
4a64f543 MS |
10015 | /* Return non-zero if EXP is verified as constant. Returned zero |
10016 | means EXP is variable. Also the constant detection may fail for | |
10017 | some constant expressions and in such case still falsely return | |
10018 | zero. */ | |
2e6e3d9c | 10019 | |
65d79d4b SDJ |
10020 | static int |
10021 | watchpoint_exp_is_const (const struct expression *exp) | |
10022 | { | |
10023 | int i = exp->nelts; | |
10024 | ||
10025 | while (i > 0) | |
10026 | { | |
10027 | int oplenp, argsp; | |
10028 | ||
10029 | /* We are only interested in the descriptor of each element. */ | |
10030 | operator_length (exp, i, &oplenp, &argsp); | |
10031 | i -= oplenp; | |
10032 | ||
10033 | switch (exp->elts[i].opcode) | |
10034 | { | |
10035 | case BINOP_ADD: | |
10036 | case BINOP_SUB: | |
10037 | case BINOP_MUL: | |
10038 | case BINOP_DIV: | |
10039 | case BINOP_REM: | |
10040 | case BINOP_MOD: | |
10041 | case BINOP_LSH: | |
10042 | case BINOP_RSH: | |
10043 | case BINOP_LOGICAL_AND: | |
10044 | case BINOP_LOGICAL_OR: | |
10045 | case BINOP_BITWISE_AND: | |
10046 | case BINOP_BITWISE_IOR: | |
10047 | case BINOP_BITWISE_XOR: | |
10048 | case BINOP_EQUAL: | |
10049 | case BINOP_NOTEQUAL: | |
10050 | case BINOP_LESS: | |
10051 | case BINOP_GTR: | |
10052 | case BINOP_LEQ: | |
10053 | case BINOP_GEQ: | |
10054 | case BINOP_REPEAT: | |
10055 | case BINOP_COMMA: | |
10056 | case BINOP_EXP: | |
10057 | case BINOP_MIN: | |
10058 | case BINOP_MAX: | |
10059 | case BINOP_INTDIV: | |
10060 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10061 | case TERNOP_COND: |
10062 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10063 | |
10064 | case OP_LONG: | |
edd079d9 | 10065 | case OP_FLOAT: |
65d79d4b SDJ |
10066 | case OP_LAST: |
10067 | case OP_COMPLEX: | |
10068 | case OP_STRING: | |
65d79d4b SDJ |
10069 | case OP_ARRAY: |
10070 | case OP_TYPE: | |
608b4967 TT |
10071 | case OP_TYPEOF: |
10072 | case OP_DECLTYPE: | |
6e72ca20 | 10073 | case OP_TYPEID: |
65d79d4b SDJ |
10074 | case OP_NAME: |
10075 | case OP_OBJC_NSSTRING: | |
10076 | ||
10077 | case UNOP_NEG: | |
10078 | case UNOP_LOGICAL_NOT: | |
10079 | case UNOP_COMPLEMENT: | |
10080 | case UNOP_ADDR: | |
10081 | case UNOP_HIGH: | |
aeaa2474 | 10082 | case UNOP_CAST: |
9eaf6705 TT |
10083 | |
10084 | case UNOP_CAST_TYPE: | |
10085 | case UNOP_REINTERPRET_CAST: | |
10086 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10087 | /* Unary, binary and ternary operators: We have to check |
10088 | their operands. If they are constant, then so is the | |
10089 | result of that operation. For instance, if A and B are | |
10090 | determined to be constants, then so is "A + B". | |
10091 | ||
10092 | UNOP_IND is one exception to the rule above, because the | |
10093 | value of *ADDR is not necessarily a constant, even when | |
10094 | ADDR is. */ | |
65d79d4b SDJ |
10095 | break; |
10096 | ||
10097 | case OP_VAR_VALUE: | |
10098 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10099 | |
65d79d4b | 10100 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10101 | possible that a buggy compiler could mark a variable as |
10102 | constant even when it is not, and TYPE_CONST would return | |
10103 | true in this case, while SYMBOL_CLASS wouldn't. | |
10104 | ||
10105 | We also have to check for function symbols because they | |
10106 | are always constant. */ | |
65d79d4b SDJ |
10107 | { |
10108 | struct symbol *s = exp->elts[i + 2].symbol; | |
10109 | ||
10110 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10111 | && SYMBOL_CLASS (s) != LOC_CONST | |
10112 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10113 | return 0; | |
10114 | break; | |
10115 | } | |
10116 | ||
10117 | /* The default action is to return 0 because we are using | |
10118 | the optimistic approach here: If we don't know something, | |
10119 | then it is not a constant. */ | |
10120 | default: | |
10121 | return 0; | |
10122 | } | |
10123 | } | |
10124 | ||
10125 | return 1; | |
10126 | } | |
10127 | ||
c1fc2657 | 10128 | /* Watchpoint destructor. */ |
3a5c3e22 | 10129 | |
c1fc2657 | 10130 | watchpoint::~watchpoint () |
3a5c3e22 | 10131 | { |
c1fc2657 SM |
10132 | xfree (this->exp_string); |
10133 | xfree (this->exp_string_reparse); | |
10134 | value_free (this->val); | |
3a5c3e22 PA |
10135 | } |
10136 | ||
348d480f PA |
10137 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10138 | ||
10139 | static void | |
10140 | re_set_watchpoint (struct breakpoint *b) | |
10141 | { | |
3a5c3e22 PA |
10142 | struct watchpoint *w = (struct watchpoint *) b; |
10143 | ||
348d480f PA |
10144 | /* Watchpoint can be either on expression using entirely global |
10145 | variables, or it can be on local variables. | |
10146 | ||
10147 | Watchpoints of the first kind are never auto-deleted, and even | |
10148 | persist across program restarts. Since they can use variables | |
10149 | from shared libraries, we need to reparse expression as libraries | |
10150 | are loaded and unloaded. | |
10151 | ||
10152 | Watchpoints on local variables can also change meaning as result | |
10153 | of solib event. For example, if a watchpoint uses both a local | |
10154 | and a global variables in expression, it's a local watchpoint, | |
10155 | but unloading of a shared library will make the expression | |
10156 | invalid. This is not a very common use case, but we still | |
10157 | re-evaluate expression, to avoid surprises to the user. | |
10158 | ||
10159 | Note that for local watchpoints, we re-evaluate it only if | |
10160 | watchpoints frame id is still valid. If it's not, it means the | |
10161 | watchpoint is out of scope and will be deleted soon. In fact, | |
10162 | I'm not sure we'll ever be called in this case. | |
10163 | ||
10164 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10165 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10166 | |
3a5c3e22 PA |
10167 | Don't do anything about disabled watchpoints, since they will be |
10168 | reevaluated again when enabled. */ | |
10169 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10170 | } |
10171 | ||
77b06cd7 TJB |
10172 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10173 | ||
10174 | static int | |
10175 | insert_watchpoint (struct bp_location *bl) | |
10176 | { | |
3a5c3e22 PA |
10177 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10178 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10179 | |
10180 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10181 | w->cond_exp.get ()); |
77b06cd7 TJB |
10182 | } |
10183 | ||
10184 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10185 | ||
10186 | static int | |
73971819 | 10187 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10188 | { |
3a5c3e22 PA |
10189 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10190 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10191 | |
10192 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10193 | w->cond_exp.get ()); |
e09342b5 TJB |
10194 | } |
10195 | ||
e09342b5 | 10196 | static int |
348d480f | 10197 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10198 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10199 | const struct target_waitstatus *ws) |
e09342b5 | 10200 | { |
348d480f | 10201 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10202 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10203 | |
348d480f PA |
10204 | /* Continuable hardware watchpoints are treated as non-existent if the |
10205 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10206 | some data address). Otherwise gdb won't stop on a break instruction | |
10207 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10208 | been defined. Also skip watchpoints which we know did not trigger | |
10209 | (did not match the data address). */ | |
10210 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10211 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10212 | return 0; |
9c06b0b4 | 10213 | |
348d480f | 10214 | return 1; |
9c06b0b4 TJB |
10215 | } |
10216 | ||
348d480f PA |
10217 | static void |
10218 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10219 | { |
348d480f | 10220 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10221 | |
348d480f | 10222 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10223 | } |
10224 | ||
10225 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10226 | hardware watchpoints. */ |
9c06b0b4 TJB |
10227 | |
10228 | static int | |
348d480f | 10229 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10230 | { |
3a5c3e22 PA |
10231 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10232 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10233 | |
10234 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10235 | } |
10236 | ||
10237 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10238 | hardware watchpoints. */ |
9c06b0b4 TJB |
10239 | |
10240 | static int | |
348d480f | 10241 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10242 | { |
efa80663 PA |
10243 | /* Read and access watchpoints only work with hardware support. */ |
10244 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10245 | } |
10246 | ||
9c06b0b4 | 10247 | static enum print_stop_action |
348d480f | 10248 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10249 | { |
348d480f | 10250 | struct breakpoint *b; |
348d480f | 10251 | enum print_stop_action result; |
3a5c3e22 | 10252 | struct watchpoint *w; |
79a45e25 | 10253 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10254 | |
10255 | gdb_assert (bs->bp_location_at != NULL); | |
10256 | ||
348d480f | 10257 | b = bs->breakpoint_at; |
3a5c3e22 | 10258 | w = (struct watchpoint *) b; |
348d480f | 10259 | |
f303dbd6 PA |
10260 | annotate_watchpoint (b->number); |
10261 | maybe_print_thread_hit_breakpoint (uiout); | |
10262 | ||
d7e74731 PA |
10263 | string_file stb; |
10264 | ||
76f9c9cf | 10265 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10266 | switch (b->type) |
10267 | { | |
348d480f | 10268 | case bp_watchpoint: |
9c06b0b4 | 10269 | case bp_hardware_watchpoint: |
112e8700 SM |
10270 | if (uiout->is_mi_like_p ()) |
10271 | uiout->field_string | |
10272 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10273 | mention (b); |
76f9c9cf | 10274 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10275 | uiout->text ("\nOld value = "); |
d7e74731 | 10276 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10277 | uiout->field_stream ("old", stb); |
10278 | uiout->text ("\nNew value = "); | |
d7e74731 | 10279 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10280 | uiout->field_stream ("new", stb); |
10281 | uiout->text ("\n"); | |
348d480f PA |
10282 | /* More than one watchpoint may have been triggered. */ |
10283 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10284 | break; |
10285 | ||
10286 | case bp_read_watchpoint: | |
112e8700 SM |
10287 | if (uiout->is_mi_like_p ()) |
10288 | uiout->field_string | |
10289 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10290 | mention (b); |
76f9c9cf | 10291 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10292 | uiout->text ("\nValue = "); |
d7e74731 | 10293 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10294 | uiout->field_stream ("value", stb); |
10295 | uiout->text ("\n"); | |
348d480f | 10296 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10297 | break; |
10298 | ||
10299 | case bp_access_watchpoint: | |
348d480f PA |
10300 | if (bs->old_val != NULL) |
10301 | { | |
112e8700 SM |
10302 | if (uiout->is_mi_like_p ()) |
10303 | uiout->field_string | |
10304 | ("reason", | |
348d480f PA |
10305 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10306 | mention (b); | |
76f9c9cf | 10307 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10308 | uiout->text ("\nOld value = "); |
d7e74731 | 10309 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10310 | uiout->field_stream ("old", stb); |
10311 | uiout->text ("\nNew value = "); | |
348d480f PA |
10312 | } |
10313 | else | |
10314 | { | |
10315 | mention (b); | |
112e8700 SM |
10316 | if (uiout->is_mi_like_p ()) |
10317 | uiout->field_string | |
10318 | ("reason", | |
348d480f | 10319 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10320 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10321 | uiout->text ("\nValue = "); |
348d480f | 10322 | } |
d7e74731 | 10323 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10324 | uiout->field_stream ("new", stb); |
10325 | uiout->text ("\n"); | |
348d480f | 10326 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10327 | break; |
10328 | default: | |
348d480f | 10329 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10330 | } |
10331 | ||
348d480f PA |
10332 | return result; |
10333 | } | |
10334 | ||
10335 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10336 | watchpoints. */ | |
10337 | ||
10338 | static void | |
10339 | print_mention_watchpoint (struct breakpoint *b) | |
10340 | { | |
3a5c3e22 | 10341 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10342 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10343 | const char *tuple_name; |
348d480f PA |
10344 | |
10345 | switch (b->type) | |
10346 | { | |
10347 | case bp_watchpoint: | |
112e8700 | 10348 | uiout->text ("Watchpoint "); |
46b9c129 | 10349 | tuple_name = "wpt"; |
348d480f PA |
10350 | break; |
10351 | case bp_hardware_watchpoint: | |
112e8700 | 10352 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10353 | tuple_name = "wpt"; |
348d480f PA |
10354 | break; |
10355 | case bp_read_watchpoint: | |
112e8700 | 10356 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10357 | tuple_name = "hw-rwpt"; |
348d480f PA |
10358 | break; |
10359 | case bp_access_watchpoint: | |
112e8700 | 10360 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10361 | tuple_name = "hw-awpt"; |
348d480f PA |
10362 | break; |
10363 | default: | |
10364 | internal_error (__FILE__, __LINE__, | |
10365 | _("Invalid hardware watchpoint type.")); | |
10366 | } | |
10367 | ||
46b9c129 | 10368 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10369 | uiout->field_int ("number", b->number); |
10370 | uiout->text (": "); | |
10371 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10372 | } |
10373 | ||
10374 | /* Implement the "print_recreate" breakpoint_ops method for | |
10375 | watchpoints. */ | |
10376 | ||
10377 | static void | |
10378 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10379 | { | |
3a5c3e22 PA |
10380 | struct watchpoint *w = (struct watchpoint *) b; |
10381 | ||
348d480f PA |
10382 | switch (b->type) |
10383 | { | |
10384 | case bp_watchpoint: | |
10385 | case bp_hardware_watchpoint: | |
10386 | fprintf_unfiltered (fp, "watch"); | |
10387 | break; | |
10388 | case bp_read_watchpoint: | |
10389 | fprintf_unfiltered (fp, "rwatch"); | |
10390 | break; | |
10391 | case bp_access_watchpoint: | |
10392 | fprintf_unfiltered (fp, "awatch"); | |
10393 | break; | |
10394 | default: | |
10395 | internal_error (__FILE__, __LINE__, | |
10396 | _("Invalid watchpoint type.")); | |
10397 | } | |
10398 | ||
3a5c3e22 | 10399 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10400 | print_recreate_thread (b, fp); |
348d480f PA |
10401 | } |
10402 | ||
427cd150 TT |
10403 | /* Implement the "explains_signal" breakpoint_ops method for |
10404 | watchpoints. */ | |
10405 | ||
47591c29 | 10406 | static int |
427cd150 TT |
10407 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10408 | { | |
10409 | /* A software watchpoint cannot cause a signal other than | |
10410 | GDB_SIGNAL_TRAP. */ | |
10411 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10412 | return 0; |
427cd150 | 10413 | |
47591c29 | 10414 | return 1; |
427cd150 TT |
10415 | } |
10416 | ||
348d480f PA |
10417 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10418 | ||
2060206e | 10419 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10420 | |
10421 | /* Implement the "insert" breakpoint_ops method for | |
10422 | masked hardware watchpoints. */ | |
10423 | ||
10424 | static int | |
10425 | insert_masked_watchpoint (struct bp_location *bl) | |
10426 | { | |
3a5c3e22 PA |
10427 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10428 | ||
10429 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10430 | bl->watchpoint_type); |
10431 | } | |
10432 | ||
10433 | /* Implement the "remove" breakpoint_ops method for | |
10434 | masked hardware watchpoints. */ | |
10435 | ||
10436 | static int | |
73971819 | 10437 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10438 | { |
3a5c3e22 PA |
10439 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10440 | ||
10441 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10442 | bl->watchpoint_type); |
10443 | } | |
10444 | ||
10445 | /* Implement the "resources_needed" breakpoint_ops method for | |
10446 | masked hardware watchpoints. */ | |
10447 | ||
10448 | static int | |
10449 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10450 | { | |
3a5c3e22 PA |
10451 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10452 | ||
10453 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10454 | } |
10455 | ||
10456 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10457 | masked hardware watchpoints. */ | |
10458 | ||
10459 | static int | |
10460 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10461 | { | |
10462 | return 0; | |
10463 | } | |
10464 | ||
10465 | /* Implement the "print_it" breakpoint_ops method for | |
10466 | masked hardware watchpoints. */ | |
10467 | ||
10468 | static enum print_stop_action | |
10469 | print_it_masked_watchpoint (bpstat bs) | |
10470 | { | |
10471 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10472 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10473 | |
10474 | /* Masked watchpoints have only one location. */ | |
10475 | gdb_assert (b->loc && b->loc->next == NULL); | |
10476 | ||
f303dbd6 PA |
10477 | annotate_watchpoint (b->number); |
10478 | maybe_print_thread_hit_breakpoint (uiout); | |
10479 | ||
348d480f PA |
10480 | switch (b->type) |
10481 | { | |
10482 | case bp_hardware_watchpoint: | |
112e8700 SM |
10483 | if (uiout->is_mi_like_p ()) |
10484 | uiout->field_string | |
10485 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10486 | break; |
10487 | ||
10488 | case bp_read_watchpoint: | |
112e8700 SM |
10489 | if (uiout->is_mi_like_p ()) |
10490 | uiout->field_string | |
10491 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10492 | break; |
10493 | ||
10494 | case bp_access_watchpoint: | |
112e8700 SM |
10495 | if (uiout->is_mi_like_p ()) |
10496 | uiout->field_string | |
10497 | ("reason", | |
348d480f PA |
10498 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10499 | break; | |
10500 | default: | |
10501 | internal_error (__FILE__, __LINE__, | |
10502 | _("Invalid hardware watchpoint type.")); | |
10503 | } | |
10504 | ||
10505 | mention (b); | |
112e8700 | 10506 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10507 | Check the underlying instruction at PC for the memory\n\ |
10508 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10509 | uiout->text ("\n"); |
9c06b0b4 TJB |
10510 | |
10511 | /* More than one watchpoint may have been triggered. */ | |
10512 | return PRINT_UNKNOWN; | |
10513 | } | |
10514 | ||
10515 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10516 | masked hardware watchpoints. */ | |
10517 | ||
10518 | static void | |
10519 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10520 | struct ui_out *uiout) | |
10521 | { | |
3a5c3e22 PA |
10522 | struct watchpoint *w = (struct watchpoint *) b; |
10523 | ||
9c06b0b4 TJB |
10524 | /* Masked watchpoints have only one location. */ |
10525 | gdb_assert (b->loc && b->loc->next == NULL); | |
10526 | ||
112e8700 SM |
10527 | uiout->text ("\tmask "); |
10528 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10529 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10530 | } |
10531 | ||
10532 | /* Implement the "print_mention" breakpoint_ops method for | |
10533 | masked hardware watchpoints. */ | |
10534 | ||
10535 | static void | |
10536 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10537 | { | |
3a5c3e22 | 10538 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10539 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10540 | const char *tuple_name; |
9c06b0b4 TJB |
10541 | |
10542 | switch (b->type) | |
10543 | { | |
10544 | case bp_hardware_watchpoint: | |
112e8700 | 10545 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10546 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10547 | break; |
10548 | case bp_read_watchpoint: | |
112e8700 | 10549 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10550 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10551 | break; |
10552 | case bp_access_watchpoint: | |
112e8700 | 10553 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10554 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10555 | break; |
10556 | default: | |
10557 | internal_error (__FILE__, __LINE__, | |
10558 | _("Invalid hardware watchpoint type.")); | |
10559 | } | |
10560 | ||
46b9c129 | 10561 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10562 | uiout->field_int ("number", b->number); |
10563 | uiout->text (": "); | |
10564 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10565 | } |
10566 | ||
10567 | /* Implement the "print_recreate" breakpoint_ops method for | |
10568 | masked hardware watchpoints. */ | |
10569 | ||
10570 | static void | |
10571 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10572 | { | |
3a5c3e22 | 10573 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10574 | char tmp[40]; |
10575 | ||
10576 | switch (b->type) | |
10577 | { | |
10578 | case bp_hardware_watchpoint: | |
10579 | fprintf_unfiltered (fp, "watch"); | |
10580 | break; | |
10581 | case bp_read_watchpoint: | |
10582 | fprintf_unfiltered (fp, "rwatch"); | |
10583 | break; | |
10584 | case bp_access_watchpoint: | |
10585 | fprintf_unfiltered (fp, "awatch"); | |
10586 | break; | |
10587 | default: | |
10588 | internal_error (__FILE__, __LINE__, | |
10589 | _("Invalid hardware watchpoint type.")); | |
10590 | } | |
10591 | ||
3a5c3e22 PA |
10592 | sprintf_vma (tmp, w->hw_wp_mask); |
10593 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10594 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10595 | } |
10596 | ||
10597 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10598 | ||
2060206e | 10599 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10600 | |
10601 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10602 | ||
10603 | static int | |
10604 | is_masked_watchpoint (const struct breakpoint *b) | |
10605 | { | |
10606 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10607 | } | |
10608 | ||
53a5351d JM |
10609 | /* accessflag: hw_write: watch write, |
10610 | hw_read: watch read, | |
10611 | hw_access: watch access (read or write) */ | |
c906108c | 10612 | static void |
bbc13ae3 | 10613 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10614 | int just_location, int internal) |
c906108c | 10615 | { |
c1fc2657 | 10616 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10617 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10618 | struct value *val, *mark, *result; |
bb9d5f81 | 10619 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10620 | const char *exp_start = NULL; |
10621 | const char *exp_end = NULL; | |
10622 | const char *tok, *end_tok; | |
9c06b0b4 | 10623 | int toklen = -1; |
bbc13ae3 KS |
10624 | const char *cond_start = NULL; |
10625 | const char *cond_end = NULL; | |
c906108c | 10626 | enum bptype bp_type; |
37e4754d | 10627 | int thread = -1; |
0cf6dd15 | 10628 | int pc = 0; |
9c06b0b4 TJB |
10629 | /* Flag to indicate whether we are going to use masks for |
10630 | the hardware watchpoint. */ | |
10631 | int use_mask = 0; | |
10632 | CORE_ADDR mask = 0; | |
c906108c | 10633 | |
37e4754d LM |
10634 | /* Make sure that we actually have parameters to parse. */ |
10635 | if (arg != NULL && arg[0] != '\0') | |
10636 | { | |
bbc13ae3 KS |
10637 | const char *value_start; |
10638 | ||
10639 | exp_end = arg + strlen (arg); | |
37e4754d | 10640 | |
9c06b0b4 TJB |
10641 | /* Look for "parameter value" pairs at the end |
10642 | of the arguments string. */ | |
bbc13ae3 | 10643 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10644 | { |
10645 | /* Skip whitespace at the end of the argument list. */ | |
10646 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10647 | tok--; | |
10648 | ||
10649 | /* Find the beginning of the last token. | |
10650 | This is the value of the parameter. */ | |
10651 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10652 | tok--; | |
10653 | value_start = tok + 1; | |
10654 | ||
10655 | /* Skip whitespace. */ | |
10656 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10657 | tok--; | |
10658 | ||
10659 | end_tok = tok; | |
10660 | ||
10661 | /* Find the beginning of the second to last token. | |
10662 | This is the parameter itself. */ | |
10663 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10664 | tok--; | |
10665 | tok++; | |
10666 | toklen = end_tok - tok + 1; | |
10667 | ||
61012eef | 10668 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10669 | { |
5d5658a1 | 10670 | struct thread_info *thr; |
9c06b0b4 TJB |
10671 | /* At this point we've found a "thread" token, which means |
10672 | the user is trying to set a watchpoint that triggers | |
10673 | only in a specific thread. */ | |
5d5658a1 | 10674 | const char *endp; |
37e4754d | 10675 | |
9c06b0b4 TJB |
10676 | if (thread != -1) |
10677 | error(_("You can specify only one thread.")); | |
37e4754d | 10678 | |
9c06b0b4 | 10679 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10680 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10681 | |
5d5658a1 | 10682 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10683 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10684 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10685 | |
5d5658a1 | 10686 | thread = thr->global_num; |
9c06b0b4 | 10687 | } |
61012eef | 10688 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10689 | { |
10690 | /* We've found a "mask" token, which means the user wants to | |
10691 | create a hardware watchpoint that is going to have the mask | |
10692 | facility. */ | |
10693 | struct value *mask_value, *mark; | |
37e4754d | 10694 | |
9c06b0b4 TJB |
10695 | if (use_mask) |
10696 | error(_("You can specify only one mask.")); | |
37e4754d | 10697 | |
9c06b0b4 | 10698 | use_mask = just_location = 1; |
37e4754d | 10699 | |
9c06b0b4 TJB |
10700 | mark = value_mark (); |
10701 | mask_value = parse_to_comma_and_eval (&value_start); | |
10702 | mask = value_as_address (mask_value); | |
10703 | value_free_to_mark (mark); | |
10704 | } | |
10705 | else | |
10706 | /* We didn't recognize what we found. We should stop here. */ | |
10707 | break; | |
37e4754d | 10708 | |
9c06b0b4 TJB |
10709 | /* Truncate the string and get rid of the "parameter value" pair before |
10710 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10711 | exp_end = tok; |
9c06b0b4 | 10712 | } |
37e4754d | 10713 | } |
bbc13ae3 KS |
10714 | else |
10715 | exp_end = arg; | |
37e4754d | 10716 | |
bbc13ae3 KS |
10717 | /* Parse the rest of the arguments. From here on out, everything |
10718 | is in terms of a newly allocated string instead of the original | |
10719 | ARG. */ | |
c906108c | 10720 | innermost_block = NULL; |
81b1e71c TT |
10721 | std::string expression (arg, exp_end - arg); |
10722 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10723 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10724 | exp_end = arg; |
fa8a61dc TT |
10725 | /* Remove trailing whitespace from the expression before saving it. |
10726 | This makes the eventual display of the expression string a bit | |
10727 | prettier. */ | |
10728 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10729 | --exp_end; | |
10730 | ||
65d79d4b | 10731 | /* Checking if the expression is not constant. */ |
4d01a485 | 10732 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10733 | { |
10734 | int len; | |
10735 | ||
10736 | len = exp_end - exp_start; | |
10737 | while (len > 0 && isspace (exp_start[len - 1])) | |
10738 | len--; | |
10739 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10740 | } | |
10741 | ||
c906108c SS |
10742 | exp_valid_block = innermost_block; |
10743 | mark = value_mark (); | |
4d01a485 | 10744 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10745 | |
bb9d5f81 PP |
10746 | if (val != NULL && just_location) |
10747 | { | |
10748 | saved_bitpos = value_bitpos (val); | |
10749 | saved_bitsize = value_bitsize (val); | |
10750 | } | |
10751 | ||
06a64a0b TT |
10752 | if (just_location) |
10753 | { | |
9c06b0b4 TJB |
10754 | int ret; |
10755 | ||
06a64a0b | 10756 | exp_valid_block = NULL; |
a1442452 | 10757 | val = value_addr (result); |
06a64a0b TT |
10758 | release_value (val); |
10759 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10760 | |
10761 | if (use_mask) | |
10762 | { | |
10763 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10764 | mask); | |
10765 | if (ret == -1) | |
10766 | error (_("This target does not support masked watchpoints.")); | |
10767 | else if (ret == -2) | |
10768 | error (_("Invalid mask or memory region.")); | |
10769 | } | |
06a64a0b TT |
10770 | } |
10771 | else if (val != NULL) | |
fa4727a6 | 10772 | release_value (val); |
c906108c | 10773 | |
f1735a53 TT |
10774 | tok = skip_spaces (arg); |
10775 | end_tok = skip_to_space (tok); | |
c906108c SS |
10776 | |
10777 | toklen = end_tok - tok; | |
10778 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10779 | { | |
60e1c644 | 10780 | innermost_block = NULL; |
c906108c | 10781 | tok = cond_start = end_tok + 1; |
4d01a485 | 10782 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10783 | |
10784 | /* The watchpoint expression may not be local, but the condition | |
10785 | may still be. E.g.: `watch global if local > 0'. */ | |
10786 | cond_exp_valid_block = innermost_block; | |
10787 | ||
c906108c SS |
10788 | cond_end = tok; |
10789 | } | |
10790 | if (*tok) | |
8a3fe4f8 | 10791 | error (_("Junk at end of command.")); |
c906108c | 10792 | |
441d7c93 PA |
10793 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10794 | ||
10795 | /* Save this because create_internal_breakpoint below invalidates | |
10796 | 'wp_frame'. */ | |
10797 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10798 | |
10799 | /* If the expression is "local", then set up a "watchpoint scope" | |
10800 | breakpoint at the point where we've left the scope of the watchpoint | |
10801 | expression. Create the scope breakpoint before the watchpoint, so | |
10802 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10803 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10804 | { |
441d7c93 PA |
10805 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10806 | ||
10807 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10808 | { |
441d7c93 PA |
10809 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10810 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10811 | ||
edb3359d | 10812 | scope_breakpoint |
441d7c93 | 10813 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10814 | bp_watchpoint_scope, |
10815 | &momentary_breakpoint_ops); | |
d983da9c | 10816 | |
441d7c93 PA |
10817 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10818 | wp_frame = NULL; | |
10819 | ||
edb3359d | 10820 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10821 | |
edb3359d DJ |
10822 | /* Automatically delete the breakpoint when it hits. */ |
10823 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10824 | |
edb3359d | 10825 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10826 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10827 | |
edb3359d | 10828 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10829 | scope_breakpoint->loc->gdbarch = caller_arch; |
10830 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10831 | scope_breakpoint->loc->address |
a6d9a66e UW |
10832 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10833 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10834 | scope_breakpoint->type); |
10835 | } | |
d983da9c DJ |
10836 | } |
10837 | ||
e8369a73 AB |
10838 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10839 | watchpoints here even if hardware watchpoints are turned off, a call | |
10840 | to update_watchpoint later in this function will cause the type to | |
10841 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10842 | ||
10843 | if (accessflag == hw_read) | |
10844 | bp_type = bp_read_watchpoint; | |
10845 | else if (accessflag == hw_access) | |
10846 | bp_type = bp_access_watchpoint; | |
10847 | else | |
10848 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10849 | |
b270e6f9 | 10850 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10851 | |
348d480f | 10852 | if (use_mask) |
b270e6f9 | 10853 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10854 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10855 | else |
b270e6f9 | 10856 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10857 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10858 | w->thread = thread; |
10859 | w->disposition = disp_donttouch; | |
10860 | w->pspace = current_program_space; | |
b22e99fd | 10861 | w->exp = std::move (exp); |
3a5c3e22 PA |
10862 | w->exp_valid_block = exp_valid_block; |
10863 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10864 | if (just_location) |
10865 | { | |
10866 | struct type *t = value_type (val); | |
10867 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 10868 | |
43cc5389 TT |
10869 | w->exp_string_reparse |
10870 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10871 | |
3a5c3e22 | 10872 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10873 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10874 | } |
10875 | else | |
3a5c3e22 | 10876 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10877 | |
10878 | if (use_mask) | |
10879 | { | |
3a5c3e22 | 10880 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10881 | } |
10882 | else | |
10883 | { | |
3a5c3e22 | 10884 | w->val = val; |
bb9d5f81 PP |
10885 | w->val_bitpos = saved_bitpos; |
10886 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10887 | w->val_valid = 1; |
9c06b0b4 | 10888 | } |
77b06cd7 | 10889 | |
c906108c | 10890 | if (cond_start) |
c1fc2657 | 10891 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10892 | else |
c1fc2657 | 10893 | w->cond_string = 0; |
c5aa993b | 10894 | |
441d7c93 | 10895 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10896 | { |
441d7c93 | 10897 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10898 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10899 | } |
c906108c | 10900 | else |
f6bc2008 | 10901 | { |
3a5c3e22 PA |
10902 | w->watchpoint_frame = null_frame_id; |
10903 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10904 | } |
c906108c | 10905 | |
d983da9c | 10906 | if (scope_breakpoint != NULL) |
c906108c | 10907 | { |
d983da9c DJ |
10908 | /* The scope breakpoint is related to the watchpoint. We will |
10909 | need to act on them together. */ | |
c1fc2657 | 10910 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10911 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10912 | } |
d983da9c | 10913 | |
06a64a0b TT |
10914 | if (!just_location) |
10915 | value_free_to_mark (mark); | |
2d134ed3 | 10916 | |
b270e6f9 TT |
10917 | /* Finally update the new watchpoint. This creates the locations |
10918 | that should be inserted. */ | |
10919 | update_watchpoint (w.get (), 1); | |
a9634178 | 10920 | |
b270e6f9 | 10921 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10922 | } |
10923 | ||
e09342b5 | 10924 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10925 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10926 | |
c906108c | 10927 | static int |
a9634178 | 10928 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10929 | { |
10930 | int found_memory_cnt = 0; | |
2e70b7b9 | 10931 | struct value *head = v; |
c906108c SS |
10932 | |
10933 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10934 | if (!can_use_hw_watchpoints) |
c906108c | 10935 | return 0; |
c5aa993b | 10936 | |
5c44784c JM |
10937 | /* Make sure that the value of the expression depends only upon |
10938 | memory contents, and values computed from them within GDB. If we | |
10939 | find any register references or function calls, we can't use a | |
10940 | hardware watchpoint. | |
10941 | ||
10942 | The idea here is that evaluating an expression generates a series | |
10943 | of values, one holding the value of every subexpression. (The | |
10944 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10945 | a*b+c.) GDB's values hold almost enough information to establish | |
10946 | the criteria given above --- they identify memory lvalues, | |
10947 | register lvalues, computed values, etcetera. So we can evaluate | |
10948 | the expression, and then scan the chain of values that leaves | |
10949 | behind to decide whether we can detect any possible change to the | |
10950 | expression's final value using only hardware watchpoints. | |
10951 | ||
10952 | However, I don't think that the values returned by inferior | |
10953 | function calls are special in any way. So this function may not | |
10954 | notice that an expression involving an inferior function call | |
10955 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 10956 | for (; v; v = value_next (v)) |
c906108c | 10957 | { |
5c44784c | 10958 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10959 | { |
8464be76 DJ |
10960 | if (v != head && value_lazy (v)) |
10961 | /* A lazy memory lvalue in the chain is one that GDB never | |
10962 | needed to fetch; we either just used its address (e.g., | |
10963 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10964 | in `a,b'). This doesn't apply to HEAD; if that is | |
10965 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10966 | ; |
53a5351d | 10967 | else |
5c44784c JM |
10968 | { |
10969 | /* Ahh, memory we actually used! Check if we can cover | |
10970 | it with hardware watchpoints. */ | |
df407dfe | 10971 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10972 | |
10973 | /* We only watch structs and arrays if user asked for it | |
10974 | explicitly, never if they just happen to appear in a | |
10975 | middle of some value chain. */ | |
10976 | if (v == head | |
10977 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10978 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10979 | { | |
42ae5230 | 10980 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10981 | int len; |
10982 | int num_regs; | |
10983 | ||
a9634178 | 10984 | len = (target_exact_watchpoints |
e09342b5 TJB |
10985 | && is_scalar_type_recursive (vtype))? |
10986 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10987 | |
e09342b5 TJB |
10988 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10989 | if (!num_regs) | |
2e70b7b9 MS |
10990 | return 0; |
10991 | else | |
e09342b5 | 10992 | found_memory_cnt += num_regs; |
2e70b7b9 | 10993 | } |
5c44784c | 10994 | } |
c5aa993b | 10995 | } |
5086187c AC |
10996 | else if (VALUE_LVAL (v) != not_lval |
10997 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10998 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10999 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11000 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11001 | } |
11002 | ||
11003 | /* The expression itself looks suitable for using a hardware | |
11004 | watchpoint, but give the target machine a chance to reject it. */ | |
11005 | return found_memory_cnt; | |
11006 | } | |
11007 | ||
8b93c638 | 11008 | void |
f2fc3015 | 11009 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11010 | { |
84f4c1fe | 11011 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11012 | } |
11013 | ||
06a64a0b TT |
11014 | /* A helper function that looks for the "-location" argument and then |
11015 | calls watch_command_1. */ | |
11016 | ||
11017 | static void | |
0b39b52e | 11018 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
11019 | { |
11020 | int just_location = 0; | |
11021 | ||
11022 | if (arg | |
11023 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11024 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11025 | { | |
e9cafbcc | 11026 | arg = skip_spaces (arg); |
06a64a0b TT |
11027 | just_location = 1; |
11028 | } | |
11029 | ||
84f4c1fe | 11030 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11031 | } |
8926118c | 11032 | |
c5aa993b | 11033 | static void |
0b39b52e | 11034 | watch_command (const char *arg, int from_tty) |
c906108c | 11035 | { |
06a64a0b | 11036 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11037 | } |
11038 | ||
8b93c638 | 11039 | void |
f2fc3015 | 11040 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11041 | { |
84f4c1fe | 11042 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11043 | } |
8926118c | 11044 | |
c5aa993b | 11045 | static void |
0b39b52e | 11046 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11047 | { |
06a64a0b | 11048 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11049 | } |
11050 | ||
8b93c638 | 11051 | void |
f2fc3015 | 11052 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11053 | { |
84f4c1fe | 11054 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11055 | } |
8926118c | 11056 | |
c5aa993b | 11057 | static void |
0b39b52e | 11058 | awatch_command (const char *arg, int from_tty) |
c906108c | 11059 | { |
06a64a0b | 11060 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11061 | } |
c906108c | 11062 | \f |
c5aa993b | 11063 | |
cfc31633 PA |
11064 | /* Data for the FSM that manages the until(location)/advance commands |
11065 | in infcmd.c. Here because it uses the mechanisms of | |
11066 | breakpoints. */ | |
c906108c | 11067 | |
cfc31633 | 11068 | struct until_break_fsm |
bfec99b2 | 11069 | { |
cfc31633 PA |
11070 | /* The base class. */ |
11071 | struct thread_fsm thread_fsm; | |
11072 | ||
11073 | /* The thread that as current when the command was executed. */ | |
11074 | int thread; | |
11075 | ||
11076 | /* The breakpoint set at the destination location. */ | |
11077 | struct breakpoint *location_breakpoint; | |
11078 | ||
11079 | /* Breakpoint set at the return address in the caller frame. May be | |
11080 | NULL. */ | |
11081 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11082 | }; |
11083 | ||
8980e177 PA |
11084 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11085 | struct thread_info *thread); | |
11086 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11087 | struct thread_info *thread); | |
cfc31633 PA |
11088 | static enum async_reply_reason |
11089 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11090 | ||
11091 | /* until_break_fsm's vtable. */ | |
11092 | ||
11093 | static struct thread_fsm_ops until_break_fsm_ops = | |
11094 | { | |
11095 | NULL, /* dtor */ | |
11096 | until_break_fsm_clean_up, | |
11097 | until_break_fsm_should_stop, | |
11098 | NULL, /* return_value */ | |
11099 | until_break_fsm_async_reply_reason, | |
11100 | }; | |
11101 | ||
11102 | /* Allocate a new until_break_command_fsm. */ | |
11103 | ||
11104 | static struct until_break_fsm * | |
8980e177 | 11105 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11106 | breakpoint_up &&location_breakpoint, |
11107 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11108 | { |
11109 | struct until_break_fsm *sm; | |
11110 | ||
11111 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11112 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11113 | |
11114 | sm->thread = thread; | |
454dafbd TT |
11115 | sm->location_breakpoint = location_breakpoint.release (); |
11116 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11117 | |
11118 | return sm; | |
11119 | } | |
11120 | ||
11121 | /* Implementation of the 'should_stop' FSM method for the | |
11122 | until(location)/advance commands. */ | |
11123 | ||
11124 | static int | |
8980e177 PA |
11125 | until_break_fsm_should_stop (struct thread_fsm *self, |
11126 | struct thread_info *tp) | |
cfc31633 PA |
11127 | { |
11128 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11129 | |
11130 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11131 | sm->location_breakpoint) != NULL | |
11132 | || (sm->caller_breakpoint != NULL | |
11133 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11134 | sm->caller_breakpoint) != NULL)) | |
11135 | thread_fsm_set_finished (self); | |
11136 | ||
11137 | return 1; | |
11138 | } | |
11139 | ||
11140 | /* Implementation of the 'clean_up' FSM method for the | |
11141 | until(location)/advance commands. */ | |
11142 | ||
c2c6d25f | 11143 | static void |
8980e177 PA |
11144 | until_break_fsm_clean_up (struct thread_fsm *self, |
11145 | struct thread_info *thread) | |
43ff13b4 | 11146 | { |
cfc31633 | 11147 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11148 | |
cfc31633 PA |
11149 | /* Clean up our temporary breakpoints. */ |
11150 | if (sm->location_breakpoint != NULL) | |
11151 | { | |
11152 | delete_breakpoint (sm->location_breakpoint); | |
11153 | sm->location_breakpoint = NULL; | |
11154 | } | |
11155 | if (sm->caller_breakpoint != NULL) | |
11156 | { | |
11157 | delete_breakpoint (sm->caller_breakpoint); | |
11158 | sm->caller_breakpoint = NULL; | |
11159 | } | |
11160 | delete_longjmp_breakpoint (sm->thread); | |
11161 | } | |
11162 | ||
11163 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11164 | until(location)/advance commands. */ | |
11165 | ||
11166 | static enum async_reply_reason | |
11167 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11168 | { | |
11169 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11170 | } |
11171 | ||
c906108c | 11172 | void |
f2fc3015 | 11173 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11174 | { |
8556afb4 PA |
11175 | struct frame_info *frame; |
11176 | struct gdbarch *frame_gdbarch; | |
11177 | struct frame_id stack_frame_id; | |
11178 | struct frame_id caller_frame_id; | |
ffc2605c | 11179 | struct cleanup *old_chain; |
186c406b TT |
11180 | int thread; |
11181 | struct thread_info *tp; | |
cfc31633 | 11182 | struct until_break_fsm *sm; |
c906108c | 11183 | |
70509625 | 11184 | clear_proceed_status (0); |
c906108c SS |
11185 | |
11186 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11187 | this function. */ |
c5aa993b | 11188 | |
ffc2605c | 11189 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11190 | |
6c5b2ebe PA |
11191 | std::vector<symtab_and_line> sals |
11192 | = (last_displayed_sal_is_valid () | |
11193 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11194 | get_last_displayed_symtab (), | |
11195 | get_last_displayed_line ()) | |
11196 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11197 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11198 | |
6c5b2ebe | 11199 | if (sals.size () != 1) |
8a3fe4f8 | 11200 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11201 | |
6c5b2ebe | 11202 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11203 | |
c906108c | 11204 | if (*arg) |
8a3fe4f8 | 11205 | error (_("Junk at end of arguments.")); |
c5aa993b | 11206 | |
c906108c | 11207 | resolve_sal_pc (&sal); |
c5aa993b | 11208 | |
186c406b | 11209 | tp = inferior_thread (); |
5d5658a1 | 11210 | thread = tp->global_num; |
186c406b | 11211 | |
883bc8d1 PA |
11212 | old_chain = make_cleanup (null_cleanup, NULL); |
11213 | ||
8556afb4 PA |
11214 | /* Note linespec handling above invalidates the frame chain. |
11215 | Installing a breakpoint also invalidates the frame chain (as it | |
11216 | may need to switch threads), so do any frame handling before | |
11217 | that. */ | |
11218 | ||
11219 | frame = get_selected_frame (NULL); | |
11220 | frame_gdbarch = get_frame_arch (frame); | |
11221 | stack_frame_id = get_stack_frame_id (frame); | |
11222 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11223 | |
ae66c1fc EZ |
11224 | /* Keep within the current frame, or in frames called by the current |
11225 | one. */ | |
edb3359d | 11226 | |
454dafbd | 11227 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11228 | if (frame_id_p (caller_frame_id)) |
c906108c | 11229 | { |
883bc8d1 | 11230 | struct symtab_and_line sal2; |
cfc31633 | 11231 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11232 | |
11233 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11234 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11235 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11236 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11237 | sal2, | |
11238 | caller_frame_id, | |
11239 | bp_until); | |
186c406b | 11240 | |
883bc8d1 | 11241 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11242 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11243 | } |
c5aa993b | 11244 | |
c70a6932 JK |
11245 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11246 | frame = NULL; | |
11247 | ||
454dafbd | 11248 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11249 | if (anywhere) |
11250 | /* If the user told us to continue until a specified location, | |
11251 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11252 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11253 | null_frame_id, bp_until); | |
883bc8d1 PA |
11254 | else |
11255 | /* Otherwise, specify the selected frame, because we want to stop | |
11256 | only at the very same frame. */ | |
cfc31633 PA |
11257 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11258 | stack_frame_id, bp_until); | |
883bc8d1 | 11259 | |
8980e177 | 11260 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11261 | std::move (location_breakpoint), |
11262 | std::move (caller_breakpoint)); | |
cfc31633 | 11263 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11264 | |
cfc31633 | 11265 | discard_cleanups (old_chain); |
f107f563 | 11266 | |
cfc31633 | 11267 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11268 | } |
ae66c1fc | 11269 | |
c906108c SS |
11270 | /* This function attempts to parse an optional "if <cond>" clause |
11271 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11272 | |
c906108c SS |
11273 | Else, it returns a pointer to the condition string. (It does not |
11274 | attempt to evaluate the string against a particular block.) And, | |
11275 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11276 | if clause in the arg string. */ |
53a5351d | 11277 | |
63160a43 PA |
11278 | const char * |
11279 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11280 | { |
63160a43 | 11281 | const char *cond_string; |
c5aa993b JM |
11282 | |
11283 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11284 | return NULL; |
c5aa993b | 11285 | |
4a64f543 | 11286 | /* Skip the "if" keyword. */ |
c906108c | 11287 | (*arg) += 2; |
c5aa993b | 11288 | |
c906108c | 11289 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11290 | condition string. */ |
f1735a53 | 11291 | *arg = skip_spaces (*arg); |
c906108c | 11292 | cond_string = *arg; |
c5aa993b | 11293 | |
4a64f543 MS |
11294 | /* Assume that the condition occupies the remainder of the arg |
11295 | string. */ | |
c906108c | 11296 | (*arg) += strlen (cond_string); |
c5aa993b | 11297 | |
c906108c SS |
11298 | return cond_string; |
11299 | } | |
c5aa993b | 11300 | |
c906108c SS |
11301 | /* Commands to deal with catching events, such as signals, exceptions, |
11302 | process start/exit, etc. */ | |
c5aa993b JM |
11303 | |
11304 | typedef enum | |
11305 | { | |
44feb3ce TT |
11306 | catch_fork_temporary, catch_vfork_temporary, |
11307 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11308 | } |
11309 | catch_fork_kind; | |
11310 | ||
c906108c | 11311 | static void |
eb4c3f4a | 11312 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11313 | struct cmd_list_element *command) |
c906108c | 11314 | { |
a6d9a66e | 11315 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11316 | const char *cond_string = NULL; |
44feb3ce TT |
11317 | catch_fork_kind fork_kind; |
11318 | int tempflag; | |
11319 | ||
11320 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11321 | tempflag = (fork_kind == catch_fork_temporary | |
11322 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11323 | |
44feb3ce TT |
11324 | if (!arg) |
11325 | arg = ""; | |
f1735a53 | 11326 | arg = skip_spaces (arg); |
c5aa993b | 11327 | |
c906108c | 11328 | /* The allowed syntax is: |
c5aa993b JM |
11329 | catch [v]fork |
11330 | catch [v]fork if <cond> | |
11331 | ||
4a64f543 | 11332 | First, check if there's an if clause. */ |
c906108c | 11333 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11334 | |
c906108c | 11335 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11336 | error (_("Junk at end of arguments.")); |
c5aa993b | 11337 | |
c906108c | 11338 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11339 | and enable reporting of such events. */ |
c5aa993b JM |
11340 | switch (fork_kind) |
11341 | { | |
44feb3ce TT |
11342 | case catch_fork_temporary: |
11343 | case catch_fork_permanent: | |
a6d9a66e | 11344 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11345 | &catch_fork_breakpoint_ops); |
c906108c | 11346 | break; |
44feb3ce TT |
11347 | case catch_vfork_temporary: |
11348 | case catch_vfork_permanent: | |
a6d9a66e | 11349 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11350 | &catch_vfork_breakpoint_ops); |
c906108c | 11351 | break; |
c5aa993b | 11352 | default: |
8a3fe4f8 | 11353 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11354 | break; |
c5aa993b | 11355 | } |
c906108c SS |
11356 | } |
11357 | ||
11358 | static void | |
eb4c3f4a | 11359 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11360 | struct cmd_list_element *command) |
c906108c | 11361 | { |
a6d9a66e | 11362 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11363 | int tempflag; |
63160a43 | 11364 | const char *cond_string = NULL; |
c906108c | 11365 | |
44feb3ce TT |
11366 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11367 | ||
11368 | if (!arg) | |
11369 | arg = ""; | |
f1735a53 | 11370 | arg = skip_spaces (arg); |
c906108c SS |
11371 | |
11372 | /* The allowed syntax is: | |
c5aa993b JM |
11373 | catch exec |
11374 | catch exec if <cond> | |
c906108c | 11375 | |
4a64f543 | 11376 | First, check if there's an if clause. */ |
c906108c SS |
11377 | cond_string = ep_parse_optional_if_clause (&arg); |
11378 | ||
11379 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11380 | error (_("Junk at end of arguments.")); |
c906108c | 11381 | |
b270e6f9 TT |
11382 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11383 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11384 | &catch_exec_breakpoint_ops); |
11385 | c->exec_pathname = NULL; | |
11386 | ||
b270e6f9 | 11387 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11388 | } |
c5aa993b | 11389 | |
9ac4176b | 11390 | void |
28010a5d PA |
11391 | init_ada_exception_breakpoint (struct breakpoint *b, |
11392 | struct gdbarch *gdbarch, | |
11393 | struct symtab_and_line sal, | |
f2fc3015 | 11394 | const char *addr_string, |
c0a91b2b | 11395 | const struct breakpoint_ops *ops, |
28010a5d | 11396 | int tempflag, |
349774ef | 11397 | int enabled, |
28010a5d | 11398 | int from_tty) |
f7f9143b | 11399 | { |
f7f9143b JB |
11400 | if (from_tty) |
11401 | { | |
5af949e3 UW |
11402 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11403 | if (!loc_gdbarch) | |
11404 | loc_gdbarch = gdbarch; | |
11405 | ||
6c95b8df PA |
11406 | describe_other_breakpoints (loc_gdbarch, |
11407 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11408 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11409 | version for exception catchpoints, because two catchpoints | |
11410 | used for different exception names will use the same address. | |
11411 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11412 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11413 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11414 | the user what type of catchpoint it is. The above is good |
11415 | enough for now, though. */ | |
11416 | } | |
11417 | ||
28010a5d | 11418 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11419 | |
349774ef | 11420 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11421 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11422 | b->location = string_to_event_location (&addr_string, |
11423 | language_def (language_ada)); | |
f7f9143b | 11424 | b->language = language_ada; |
f7f9143b JB |
11425 | } |
11426 | ||
c906108c | 11427 | static void |
981a3fb3 | 11428 | catch_command (const char *arg, int from_tty) |
c906108c | 11429 | { |
44feb3ce | 11430 | error (_("Catch requires an event name.")); |
c906108c SS |
11431 | } |
11432 | \f | |
11433 | ||
11434 | static void | |
981a3fb3 | 11435 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11436 | { |
44feb3ce | 11437 | error (_("Catch requires an event name.")); |
c906108c SS |
11438 | } |
11439 | ||
81b1e71c | 11440 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11441 | |
11442 | static int | |
81b1e71c | 11443 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11444 | { |
81b1e71c TT |
11445 | uintptr_t ua = (uintptr_t) a; |
11446 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11447 | |
81b1e71c | 11448 | if (a->number < b->number) |
8a2c437b | 11449 | return -1; |
81b1e71c | 11450 | else if (a->number > b->number) |
8a2c437b TT |
11451 | return 1; |
11452 | ||
11453 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11454 | the number 0. */ | |
11455 | if (ua < ub) | |
11456 | return -1; | |
94b0e70d | 11457 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11458 | } |
11459 | ||
80f8a6eb | 11460 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11461 | |
11462 | static void | |
0b39b52e | 11463 | clear_command (const char *arg, int from_tty) |
c906108c | 11464 | { |
81b1e71c | 11465 | struct breakpoint *b; |
c906108c | 11466 | int default_match; |
c906108c | 11467 | |
6c5b2ebe PA |
11468 | std::vector<symtab_and_line> decoded_sals; |
11469 | symtab_and_line last_sal; | |
11470 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11471 | if (arg) |
11472 | { | |
6c5b2ebe PA |
11473 | decoded_sals |
11474 | = decode_line_with_current_source (arg, | |
11475 | (DECODE_LINE_FUNFIRSTLINE | |
11476 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11477 | default_match = 0; |
6c5b2ebe | 11478 | sals = decoded_sals; |
c906108c SS |
11479 | } |
11480 | else | |
11481 | { | |
1bfeeb0f JL |
11482 | /* Set sal's line, symtab, pc, and pspace to the values |
11483 | corresponding to the last call to print_frame_info. If the | |
11484 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11485 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11486 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11487 | error (_("No source file specified.")); |
c906108c | 11488 | |
c906108c | 11489 | default_match = 1; |
6c5b2ebe | 11490 | sals = last_sal; |
c906108c SS |
11491 | } |
11492 | ||
4a64f543 MS |
11493 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11494 | seems, because all existing breakpoints typically have both | |
11495 | file/line and pc set. So, if clear is given file/line, we can | |
11496 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11497 | |
11498 | We only support clearing given the address explicitly | |
11499 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11500 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11501 | due to optimization, all in one block. |
4a64f543 MS |
11502 | |
11503 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11504 | PC corresponding to the same file:line, the breakpoint won't |
11505 | be cleared. We probably can still clear the breakpoint, but | |
11506 | since the other PC value is never presented to user, user | |
11507 | can only find it by guessing, and it does not seem important | |
11508 | to support that. */ | |
11509 | ||
4a64f543 MS |
11510 | /* For each line spec given, delete bps which correspond to it. Do |
11511 | it in two passes, solely to preserve the current behavior that | |
11512 | from_tty is forced true if we delete more than one | |
11513 | breakpoint. */ | |
c906108c | 11514 | |
81b1e71c | 11515 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11516 | for (const auto &sal : sals) |
c906108c | 11517 | { |
05cba821 JK |
11518 | const char *sal_fullname; |
11519 | ||
c906108c | 11520 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11521 | If line given (pc == 0), clear all bpts on specified line. |
11522 | If defaulting, clear all bpts on default line | |
c906108c | 11523 | or at default pc. |
c5aa993b JM |
11524 | |
11525 | defaulting sal.pc != 0 tests to do | |
11526 | ||
11527 | 0 1 pc | |
11528 | 1 1 pc _and_ line | |
11529 | 0 0 line | |
11530 | 1 0 <can't happen> */ | |
c906108c | 11531 | |
05cba821 JK |
11532 | sal_fullname = (sal.symtab == NULL |
11533 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11534 | |
4a64f543 | 11535 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11536 | ALL_BREAKPOINTS (b) |
c5aa993b | 11537 | { |
0d381245 | 11538 | int match = 0; |
4a64f543 | 11539 | /* Are we going to delete b? */ |
cc60f2e3 | 11540 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11541 | { |
11542 | struct bp_location *loc = b->loc; | |
11543 | for (; loc; loc = loc->next) | |
11544 | { | |
f8eba3c6 TT |
11545 | /* If the user specified file:line, don't allow a PC |
11546 | match. This matches historical gdb behavior. */ | |
11547 | int pc_match = (!sal.explicit_line | |
11548 | && sal.pc | |
11549 | && (loc->pspace == sal.pspace) | |
11550 | && (loc->address == sal.pc) | |
11551 | && (!section_is_overlay (loc->section) | |
11552 | || loc->section == sal.section)); | |
4aac40c8 TT |
11553 | int line_match = 0; |
11554 | ||
11555 | if ((default_match || sal.explicit_line) | |
2f202fde | 11556 | && loc->symtab != NULL |
05cba821 | 11557 | && sal_fullname != NULL |
4aac40c8 | 11558 | && sal.pspace == loc->pspace |
05cba821 JK |
11559 | && loc->line_number == sal.line |
11560 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11561 | sal_fullname) == 0) | |
11562 | line_match = 1; | |
4aac40c8 | 11563 | |
0d381245 VP |
11564 | if (pc_match || line_match) |
11565 | { | |
11566 | match = 1; | |
11567 | break; | |
11568 | } | |
11569 | } | |
11570 | } | |
11571 | ||
11572 | if (match) | |
81b1e71c | 11573 | found.push_back (b); |
c906108c | 11574 | } |
80f8a6eb | 11575 | } |
8a2c437b | 11576 | |
80f8a6eb | 11577 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11578 | if (found.empty ()) |
80f8a6eb MS |
11579 | { |
11580 | if (arg) | |
8a3fe4f8 | 11581 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11582 | else |
8a3fe4f8 | 11583 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11584 | } |
c906108c | 11585 | |
8a2c437b | 11586 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11587 | std::sort (found.begin (), found.end (), |
11588 | [] (const breakpoint *a, const breakpoint *b) | |
11589 | { | |
11590 | return compare_breakpoints (a, b) < 0; | |
11591 | }); | |
11592 | found.erase (std::unique (found.begin (), found.end (), | |
11593 | [] (const breakpoint *a, const breakpoint *b) | |
11594 | { | |
11595 | return compare_breakpoints (a, b) == 0; | |
11596 | }), | |
11597 | found.end ()); | |
8a2c437b | 11598 | |
81b1e71c | 11599 | if (found.size () > 1) |
4a64f543 | 11600 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11601 | if (from_tty) |
a3f17187 | 11602 | { |
81b1e71c | 11603 | if (found.size () == 1) |
a3f17187 AC |
11604 | printf_unfiltered (_("Deleted breakpoint ")); |
11605 | else | |
11606 | printf_unfiltered (_("Deleted breakpoints ")); | |
11607 | } | |
d6e956e5 | 11608 | |
81b1e71c | 11609 | for (breakpoint *iter : found) |
80f8a6eb | 11610 | { |
c5aa993b | 11611 | if (from_tty) |
81b1e71c TT |
11612 | printf_unfiltered ("%d ", iter->number); |
11613 | delete_breakpoint (iter); | |
c906108c | 11614 | } |
80f8a6eb MS |
11615 | if (from_tty) |
11616 | putchar_unfiltered ('\n'); | |
c906108c SS |
11617 | } |
11618 | \f | |
11619 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11620 | all breakpoints that are marked for deletion, whether hit or not. | |
11621 | This is called after any breakpoint is hit, or after errors. */ | |
11622 | ||
11623 | void | |
fba45db2 | 11624 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11625 | { |
35df4500 | 11626 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11627 | |
11628 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11629 | if (bs->breakpoint_at |
11630 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11631 | && bs->stop) |
f431efe5 | 11632 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11633 | |
35df4500 | 11634 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11635 | { |
b5de0fa7 | 11636 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11637 | delete_breakpoint (b); |
11638 | } | |
c906108c SS |
11639 | } |
11640 | ||
4a64f543 MS |
11641 | /* A comparison function for bp_location AP and BP being interfaced to |
11642 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11643 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11644 | secondarily by ordering first permanent elements and |
4a64f543 | 11645 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11646 | qsort being an unstable algorithm. */ |
876fa593 JK |
11647 | |
11648 | static int | |
f5336ca5 | 11649 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11650 | { |
9a3c8263 SM |
11651 | const struct bp_location *a = *(const struct bp_location **) ap; |
11652 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11653 | |
11654 | if (a->address != b->address) | |
11655 | return (a->address > b->address) - (a->address < b->address); | |
11656 | ||
dea2aa5f LM |
11657 | /* Sort locations at the same address by their pspace number, keeping |
11658 | locations of the same inferior (in a multi-inferior environment) | |
11659 | grouped. */ | |
11660 | ||
11661 | if (a->pspace->num != b->pspace->num) | |
11662 | return ((a->pspace->num > b->pspace->num) | |
11663 | - (a->pspace->num < b->pspace->num)); | |
11664 | ||
876fa593 | 11665 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11666 | if (a->permanent != b->permanent) |
11667 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11668 | |
c56a97f9 JK |
11669 | /* Make the internal GDB representation stable across GDB runs |
11670 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11671 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11672 | |
11673 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11674 | return ((a->owner->number > b->owner->number) |
11675 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11676 | |
11677 | return (a > b) - (a < b); | |
11678 | } | |
11679 | ||
f5336ca5 PA |
11680 | /* Set bp_locations_placed_address_before_address_max and |
11681 | bp_locations_shadow_len_after_address_max according to the current | |
11682 | content of the bp_locations array. */ | |
f7545552 TT |
11683 | |
11684 | static void | |
f5336ca5 | 11685 | bp_locations_target_extensions_update (void) |
f7545552 | 11686 | { |
876fa593 JK |
11687 | struct bp_location *bl, **blp_tmp; |
11688 | ||
f5336ca5 PA |
11689 | bp_locations_placed_address_before_address_max = 0; |
11690 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11691 | |
11692 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11693 | { | |
11694 | CORE_ADDR start, end, addr; | |
11695 | ||
11696 | if (!bp_location_has_shadow (bl)) | |
11697 | continue; | |
11698 | ||
11699 | start = bl->target_info.placed_address; | |
11700 | end = start + bl->target_info.shadow_len; | |
11701 | ||
11702 | gdb_assert (bl->address >= start); | |
11703 | addr = bl->address - start; | |
f5336ca5 PA |
11704 | if (addr > bp_locations_placed_address_before_address_max) |
11705 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11706 | |
11707 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11708 | ||
11709 | gdb_assert (bl->address < end); | |
11710 | addr = end - bl->address; | |
f5336ca5 PA |
11711 | if (addr > bp_locations_shadow_len_after_address_max) |
11712 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11713 | } |
f7545552 TT |
11714 | } |
11715 | ||
1e4d1764 YQ |
11716 | /* Download tracepoint locations if they haven't been. */ |
11717 | ||
11718 | static void | |
11719 | download_tracepoint_locations (void) | |
11720 | { | |
7ed2c994 | 11721 | struct breakpoint *b; |
dd2e65cc | 11722 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11723 | |
5ed8105e | 11724 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11725 | |
7ed2c994 | 11726 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11727 | { |
7ed2c994 | 11728 | struct bp_location *bl; |
1e4d1764 | 11729 | struct tracepoint *t; |
f2a8bc8a | 11730 | int bp_location_downloaded = 0; |
1e4d1764 | 11731 | |
7ed2c994 | 11732 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11733 | ? !may_insert_fast_tracepoints |
11734 | : !may_insert_tracepoints)) | |
11735 | continue; | |
11736 | ||
dd2e65cc YQ |
11737 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11738 | { | |
11739 | if (target_can_download_tracepoint ()) | |
11740 | can_download_tracepoint = TRIBOOL_TRUE; | |
11741 | else | |
11742 | can_download_tracepoint = TRIBOOL_FALSE; | |
11743 | } | |
11744 | ||
11745 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11746 | break; | |
11747 | ||
7ed2c994 YQ |
11748 | for (bl = b->loc; bl; bl = bl->next) |
11749 | { | |
11750 | /* In tracepoint, locations are _never_ duplicated, so | |
11751 | should_be_inserted is equivalent to | |
11752 | unduplicated_should_be_inserted. */ | |
11753 | if (!should_be_inserted (bl) || bl->inserted) | |
11754 | continue; | |
1e4d1764 | 11755 | |
7ed2c994 | 11756 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11757 | |
7ed2c994 | 11758 | target_download_tracepoint (bl); |
1e4d1764 | 11759 | |
7ed2c994 | 11760 | bl->inserted = 1; |
f2a8bc8a | 11761 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11762 | } |
11763 | t = (struct tracepoint *) b; | |
11764 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11765 | if (bp_location_downloaded) |
11766 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11767 | } |
1e4d1764 YQ |
11768 | } |
11769 | ||
934709f0 PW |
11770 | /* Swap the insertion/duplication state between two locations. */ |
11771 | ||
11772 | static void | |
11773 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11774 | { | |
11775 | const int left_inserted = left->inserted; | |
11776 | const int left_duplicate = left->duplicate; | |
b775012e | 11777 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11778 | const struct bp_target_info left_target_info = left->target_info; |
11779 | ||
1e4d1764 YQ |
11780 | /* Locations of tracepoints can never be duplicated. */ |
11781 | if (is_tracepoint (left->owner)) | |
11782 | gdb_assert (!left->duplicate); | |
11783 | if (is_tracepoint (right->owner)) | |
11784 | gdb_assert (!right->duplicate); | |
11785 | ||
934709f0 PW |
11786 | left->inserted = right->inserted; |
11787 | left->duplicate = right->duplicate; | |
b775012e | 11788 | left->needs_update = right->needs_update; |
934709f0 PW |
11789 | left->target_info = right->target_info; |
11790 | right->inserted = left_inserted; | |
11791 | right->duplicate = left_duplicate; | |
b775012e | 11792 | right->needs_update = left_needs_update; |
934709f0 PW |
11793 | right->target_info = left_target_info; |
11794 | } | |
11795 | ||
b775012e LM |
11796 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11797 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11798 | conditions on the target's side. Such conditions need to be updated on | |
11799 | the target. */ | |
11800 | ||
11801 | static void | |
11802 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11803 | { | |
11804 | struct bp_location **locp = NULL, **loc2p; | |
11805 | struct bp_location *loc; | |
11806 | CORE_ADDR address = 0; | |
11807 | int pspace_num; | |
11808 | ||
11809 | address = bl->address; | |
11810 | pspace_num = bl->pspace->num; | |
11811 | ||
11812 | /* This is only meaningful if the target is | |
11813 | evaluating conditions and if the user has | |
11814 | opted for condition evaluation on the target's | |
11815 | side. */ | |
11816 | if (gdb_evaluates_breakpoint_condition_p () | |
11817 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11818 | return; | |
11819 | ||
11820 | /* Flag all breakpoint locations with this address and | |
11821 | the same program space as the location | |
11822 | as "its condition has changed". We need to | |
11823 | update the conditions on the target's side. */ | |
11824 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11825 | { | |
11826 | loc = *loc2p; | |
11827 | ||
11828 | if (!is_breakpoint (loc->owner) | |
11829 | || pspace_num != loc->pspace->num) | |
11830 | continue; | |
11831 | ||
11832 | /* Flag the location appropriately. We use a different state to | |
11833 | let everyone know that we already updated the set of locations | |
11834 | with addr bl->address and program space bl->pspace. This is so | |
11835 | we don't have to keep calling these functions just to mark locations | |
11836 | that have already been marked. */ | |
11837 | loc->condition_changed = condition_updated; | |
11838 | ||
11839 | /* Free the agent expression bytecode as well. We will compute | |
11840 | it later on. */ | |
833177a4 | 11841 | loc->cond_bytecode.reset (); |
b775012e LM |
11842 | } |
11843 | } | |
44702360 PA |
11844 | /* Called whether new breakpoints are created, or existing breakpoints |
11845 | deleted, to update the global location list and recompute which | |
11846 | locations are duplicate of which. | |
b775012e | 11847 | |
04086b45 PA |
11848 | The INSERT_MODE flag determines whether locations may not, may, or |
11849 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11850 | info. */ | |
b60e7edf | 11851 | |
0d381245 | 11852 | static void |
44702360 | 11853 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11854 | { |
74960c60 | 11855 | struct breakpoint *b; |
876fa593 | 11856 | struct bp_location **locp, *loc; |
b775012e LM |
11857 | /* Last breakpoint location address that was marked for update. */ |
11858 | CORE_ADDR last_addr = 0; | |
11859 | /* Last breakpoint location program space that was marked for update. */ | |
11860 | int last_pspace_num = -1; | |
f7545552 | 11861 | |
2d134ed3 PA |
11862 | /* Used in the duplicates detection below. When iterating over all |
11863 | bp_locations, points to the first bp_location of a given address. | |
11864 | Breakpoints and watchpoints of different types are never | |
11865 | duplicates of each other. Keep one pointer for each type of | |
11866 | breakpoint/watchpoint, so we only need to loop over all locations | |
11867 | once. */ | |
11868 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11869 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11870 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11871 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11872 | |
f5336ca5 PA |
11873 | /* Saved former bp_locations array which we compare against the newly |
11874 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11875 | struct bp_location **old_locp; |
f5336ca5 | 11876 | unsigned old_locations_count; |
81b1e71c | 11877 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11878 | |
f5336ca5 PA |
11879 | old_locations_count = bp_locations_count; |
11880 | bp_locations = NULL; | |
11881 | bp_locations_count = 0; | |
0d381245 | 11882 | |
74960c60 | 11883 | ALL_BREAKPOINTS (b) |
876fa593 | 11884 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11885 | bp_locations_count++; |
876fa593 | 11886 | |
f5336ca5 PA |
11887 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11888 | locp = bp_locations; | |
876fa593 JK |
11889 | ALL_BREAKPOINTS (b) |
11890 | for (loc = b->loc; loc; loc = loc->next) | |
11891 | *locp++ = loc; | |
f5336ca5 PA |
11892 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11893 | bp_locations_compare); | |
876fa593 | 11894 | |
f5336ca5 | 11895 | bp_locations_target_extensions_update (); |
74960c60 | 11896 | |
4a64f543 MS |
11897 | /* Identify bp_location instances that are no longer present in the |
11898 | new list, and therefore should be freed. Note that it's not | |
11899 | necessary that those locations should be removed from inferior -- | |
11900 | if there's another location at the same address (previously | |
11901 | marked as duplicate), we don't need to remove/insert the | |
11902 | location. | |
876fa593 | 11903 | |
4a64f543 MS |
11904 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11905 | and former bp_location array state respectively. */ | |
876fa593 | 11906 | |
f5336ca5 | 11907 | locp = bp_locations; |
81b1e71c TT |
11908 | for (old_locp = old_locations.get (); |
11909 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11910 | old_locp++) |
74960c60 | 11911 | { |
876fa593 | 11912 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11913 | struct bp_location **loc2p; |
876fa593 | 11914 | |
e5dd4106 | 11915 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11916 | not, we have to free it. */ |
c7d46a38 | 11917 | int found_object = 0; |
20874c92 VP |
11918 | /* Tells if the location should remain inserted in the target. */ |
11919 | int keep_in_target = 0; | |
11920 | int removed = 0; | |
876fa593 | 11921 | |
4a64f543 MS |
11922 | /* Skip LOCP entries which will definitely never be needed. |
11923 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11924 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11925 | && (*locp)->address < old_loc->address) |
876fa593 | 11926 | locp++; |
c7d46a38 PA |
11927 | |
11928 | for (loc2p = locp; | |
f5336ca5 | 11929 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11930 | && (*loc2p)->address == old_loc->address); |
11931 | loc2p++) | |
11932 | { | |
b775012e LM |
11933 | /* Check if this is a new/duplicated location or a duplicated |
11934 | location that had its condition modified. If so, we want to send | |
11935 | its condition to the target if evaluation of conditions is taking | |
11936 | place there. */ | |
11937 | if ((*loc2p)->condition_changed == condition_modified | |
11938 | && (last_addr != old_loc->address | |
11939 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11940 | { |
b775012e LM |
11941 | force_breakpoint_reinsertion (*loc2p); |
11942 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11943 | } |
b775012e LM |
11944 | |
11945 | if (*loc2p == old_loc) | |
11946 | found_object = 1; | |
c7d46a38 | 11947 | } |
74960c60 | 11948 | |
b775012e LM |
11949 | /* We have already handled this address, update it so that we don't |
11950 | have to go through updates again. */ | |
11951 | last_addr = old_loc->address; | |
11952 | ||
11953 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11954 | if (!found_object) | |
11955 | force_breakpoint_reinsertion (old_loc); | |
11956 | ||
4a64f543 MS |
11957 | /* If this location is no longer present, and inserted, look if |
11958 | there's maybe a new location at the same address. If so, | |
11959 | mark that one inserted, and don't remove this one. This is | |
11960 | needed so that we don't have a time window where a breakpoint | |
11961 | at certain location is not inserted. */ | |
74960c60 | 11962 | |
876fa593 | 11963 | if (old_loc->inserted) |
0d381245 | 11964 | { |
4a64f543 MS |
11965 | /* If the location is inserted now, we might have to remove |
11966 | it. */ | |
74960c60 | 11967 | |
876fa593 | 11968 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11969 | { |
4a64f543 MS |
11970 | /* The location is still present in the location list, |
11971 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11972 | keep_in_target = 1; |
74960c60 VP |
11973 | } |
11974 | else | |
11975 | { | |
b775012e LM |
11976 | /* This location still exists, but it won't be kept in the |
11977 | target since it may have been disabled. We proceed to | |
11978 | remove its target-side condition. */ | |
11979 | ||
4a64f543 MS |
11980 | /* The location is either no longer present, or got |
11981 | disabled. See if there's another location at the | |
11982 | same address, in which case we don't need to remove | |
11983 | this one from the target. */ | |
876fa593 | 11984 | |
2bdf28a0 | 11985 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11986 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11987 | { | |
876fa593 | 11988 | for (loc2p = locp; |
f5336ca5 | 11989 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11990 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11991 | loc2p++) |
11992 | { | |
11993 | struct bp_location *loc2 = *loc2p; | |
11994 | ||
2d134ed3 | 11995 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11996 | { |
85d721b8 PA |
11997 | /* Read watchpoint locations are switched to |
11998 | access watchpoints, if the former are not | |
11999 | supported, but the latter are. */ | |
12000 | if (is_hardware_watchpoint (old_loc->owner)) | |
12001 | { | |
12002 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12003 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12004 | } | |
12005 | ||
934709f0 PW |
12006 | /* loc2 is a duplicated location. We need to check |
12007 | if it should be inserted in case it will be | |
12008 | unduplicated. */ | |
12009 | if (loc2 != old_loc | |
12010 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12011 | { |
934709f0 | 12012 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12013 | keep_in_target = 1; |
12014 | break; | |
12015 | } | |
876fa593 JK |
12016 | } |
12017 | } | |
12018 | } | |
74960c60 VP |
12019 | } |
12020 | ||
20874c92 VP |
12021 | if (!keep_in_target) |
12022 | { | |
834c0d03 | 12023 | if (remove_breakpoint (old_loc)) |
20874c92 | 12024 | { |
4a64f543 MS |
12025 | /* This is just about all we can do. We could keep |
12026 | this location on the global list, and try to | |
12027 | remove it next time, but there's no particular | |
12028 | reason why we will succeed next time. | |
20874c92 | 12029 | |
4a64f543 MS |
12030 | Note that at this point, old_loc->owner is still |
12031 | valid, as delete_breakpoint frees the breakpoint | |
12032 | only after calling us. */ | |
3e43a32a MS |
12033 | printf_filtered (_("warning: Error removing " |
12034 | "breakpoint %d\n"), | |
876fa593 | 12035 | old_loc->owner->number); |
20874c92 VP |
12036 | } |
12037 | removed = 1; | |
12038 | } | |
0d381245 | 12039 | } |
74960c60 VP |
12040 | |
12041 | if (!found_object) | |
1c5cfe86 | 12042 | { |
fbea99ea | 12043 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12044 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12045 | { |
db82e815 PA |
12046 | /* This location was removed from the target. In |
12047 | non-stop mode, a race condition is possible where | |
12048 | we've removed a breakpoint, but stop events for that | |
12049 | breakpoint are already queued and will arrive later. | |
12050 | We apply an heuristic to be able to distinguish such | |
12051 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12052 | breakpoint location for a bit, and will retire it | |
12053 | after we see some number of events. The theory here | |
12054 | is that reporting of events should, "on the average", | |
12055 | be fair, so after a while we'll see events from all | |
12056 | threads that have anything of interest, and no longer | |
12057 | need to keep this breakpoint location around. We | |
12058 | don't hold locations forever so to reduce chances of | |
12059 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12060 | SIGTRAP. | |
12061 | ||
12062 | The heuristic failing can be disastrous on | |
12063 | decr_pc_after_break targets. | |
12064 | ||
12065 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12066 | if we fail to recognize a late breakpoint SIGTRAP, | |
12067 | because events_till_retirement has reached 0 too | |
12068 | soon, we'll fail to do the PC adjustment, and report | |
12069 | a random SIGTRAP to the user. When the user resumes | |
12070 | the inferior, it will most likely immediately crash | |
2dec564e | 12071 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12072 | corrupted, because of being resumed e.g., in the |
12073 | middle of a multi-byte instruction, or skipped a | |
12074 | one-byte instruction. This was actually seen happen | |
12075 | on native x86-linux, and should be less rare on | |
12076 | targets that do not support new thread events, like | |
12077 | remote, due to the heuristic depending on | |
12078 | thread_count. | |
12079 | ||
12080 | Mistaking a random SIGTRAP for a breakpoint trap | |
12081 | causes similar symptoms (PC adjustment applied when | |
12082 | it shouldn't), but then again, playing with SIGTRAPs | |
12083 | behind the debugger's back is asking for trouble. | |
12084 | ||
12085 | Since hardware watchpoint traps are always | |
12086 | distinguishable from other traps, so we don't need to | |
12087 | apply keep hardware watchpoint moribund locations | |
12088 | around. We simply always ignore hardware watchpoint | |
12089 | traps we can no longer explain. */ | |
12090 | ||
876fa593 JK |
12091 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12092 | old_loc->owner = NULL; | |
20874c92 | 12093 | |
876fa593 | 12094 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12095 | } |
12096 | else | |
f431efe5 PA |
12097 | { |
12098 | old_loc->owner = NULL; | |
12099 | decref_bp_location (&old_loc); | |
12100 | } | |
20874c92 | 12101 | } |
74960c60 | 12102 | } |
1c5cfe86 | 12103 | |
348d480f PA |
12104 | /* Rescan breakpoints at the same address and section, marking the |
12105 | first one as "first" and any others as "duplicates". This is so | |
12106 | that the bpt instruction is only inserted once. If we have a | |
12107 | permanent breakpoint at the same place as BPT, make that one the | |
12108 | official one, and the rest as duplicates. Permanent breakpoints | |
12109 | are sorted first for the same address. | |
12110 | ||
12111 | Do the same for hardware watchpoints, but also considering the | |
12112 | watchpoint's type (regular/access/read) and length. */ | |
12113 | ||
12114 | bp_loc_first = NULL; | |
12115 | wp_loc_first = NULL; | |
12116 | awp_loc_first = NULL; | |
12117 | rwp_loc_first = NULL; | |
12118 | ALL_BP_LOCATIONS (loc, locp) | |
12119 | { | |
12120 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12121 | non-NULL. */ | |
348d480f | 12122 | struct bp_location **loc_first_p; |
d3fbdd86 | 12123 | b = loc->owner; |
348d480f | 12124 | |
6f380991 | 12125 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12126 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12127 | /* Don't detect duplicate for tracepoint locations because they are |
12128 | never duplicated. See the comments in field `duplicate' of | |
12129 | `struct bp_location'. */ | |
348d480f | 12130 | || is_tracepoint (b)) |
b775012e LM |
12131 | { |
12132 | /* Clear the condition modification flag. */ | |
12133 | loc->condition_changed = condition_unchanged; | |
12134 | continue; | |
12135 | } | |
348d480f | 12136 | |
348d480f PA |
12137 | if (b->type == bp_hardware_watchpoint) |
12138 | loc_first_p = &wp_loc_first; | |
12139 | else if (b->type == bp_read_watchpoint) | |
12140 | loc_first_p = &rwp_loc_first; | |
12141 | else if (b->type == bp_access_watchpoint) | |
12142 | loc_first_p = &awp_loc_first; | |
12143 | else | |
12144 | loc_first_p = &bp_loc_first; | |
12145 | ||
12146 | if (*loc_first_p == NULL | |
12147 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12148 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12149 | { | |
12150 | *loc_first_p = loc; | |
12151 | loc->duplicate = 0; | |
b775012e LM |
12152 | |
12153 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12154 | { | |
12155 | loc->needs_update = 1; | |
12156 | /* Clear the condition modification flag. */ | |
12157 | loc->condition_changed = condition_unchanged; | |
12158 | } | |
348d480f PA |
12159 | continue; |
12160 | } | |
12161 | ||
934709f0 PW |
12162 | |
12163 | /* This and the above ensure the invariant that the first location | |
12164 | is not duplicated, and is the inserted one. | |
12165 | All following are marked as duplicated, and are not inserted. */ | |
12166 | if (loc->inserted) | |
12167 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12168 | loc->duplicate = 1; |
12169 | ||
b775012e LM |
12170 | /* Clear the condition modification flag. */ |
12171 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12172 | } |
12173 | ||
a25a5a45 | 12174 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12175 | { |
04086b45 | 12176 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12177 | insert_breakpoint_locations (); |
12178 | else | |
12179 | { | |
44702360 PA |
12180 | /* Even though the caller told us to not insert new |
12181 | locations, we may still need to update conditions on the | |
12182 | target's side of breakpoints that were already inserted | |
12183 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12184 | only update conditions for locations that are marked |
12185 | "needs_update". */ | |
12186 | update_inserted_breakpoint_locations (); | |
12187 | } | |
12188 | } | |
348d480f | 12189 | |
04086b45 | 12190 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12191 | download_tracepoint_locations (); |
348d480f PA |
12192 | } |
12193 | ||
12194 | void | |
12195 | breakpoint_retire_moribund (void) | |
12196 | { | |
12197 | struct bp_location *loc; | |
12198 | int ix; | |
12199 | ||
12200 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12201 | if (--(loc->events_till_retirement) == 0) | |
12202 | { | |
12203 | decref_bp_location (&loc); | |
12204 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12205 | --ix; | |
12206 | } | |
12207 | } | |
12208 | ||
12209 | static void | |
44702360 | 12210 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12211 | { |
348d480f | 12212 | |
492d29ea PA |
12213 | TRY |
12214 | { | |
12215 | update_global_location_list (insert_mode); | |
12216 | } | |
12217 | CATCH (e, RETURN_MASK_ERROR) | |
12218 | { | |
12219 | } | |
12220 | END_CATCH | |
348d480f PA |
12221 | } |
12222 | ||
12223 | /* Clear BKP from a BPS. */ | |
12224 | ||
12225 | static void | |
12226 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12227 | { | |
12228 | bpstat bs; | |
12229 | ||
12230 | for (bs = bps; bs; bs = bs->next) | |
12231 | if (bs->breakpoint_at == bpt) | |
12232 | { | |
12233 | bs->breakpoint_at = NULL; | |
12234 | bs->old_val = NULL; | |
12235 | /* bs->commands will be freed later. */ | |
12236 | } | |
12237 | } | |
12238 | ||
12239 | /* Callback for iterate_over_threads. */ | |
12240 | static int | |
12241 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12242 | { | |
9a3c8263 | 12243 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12244 | |
12245 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12246 | return 0; | |
12247 | } | |
12248 | ||
12249 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12250 | callbacks. */ | |
12251 | ||
12252 | static void | |
12253 | say_where (struct breakpoint *b) | |
12254 | { | |
12255 | struct value_print_options opts; | |
12256 | ||
12257 | get_user_print_options (&opts); | |
12258 | ||
12259 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12260 | single string. */ | |
12261 | if (b->loc == NULL) | |
12262 | { | |
f00aae0f KS |
12263 | /* For pending locations, the output differs slightly based |
12264 | on b->extra_string. If this is non-NULL, it contains either | |
12265 | a condition or dprintf arguments. */ | |
12266 | if (b->extra_string == NULL) | |
12267 | { | |
12268 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12269 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12270 | } |
12271 | else if (b->type == bp_dprintf) | |
12272 | { | |
12273 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12274 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12275 | b->extra_string); |
12276 | } | |
12277 | else | |
12278 | { | |
12279 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12280 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12281 | b->extra_string); |
12282 | } | |
348d480f PA |
12283 | } |
12284 | else | |
12285 | { | |
2f202fde | 12286 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12287 | { |
12288 | printf_filtered (" at "); | |
12289 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12290 | gdb_stdout); | |
12291 | } | |
2f202fde | 12292 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12293 | { |
12294 | /* If there is a single location, we can print the location | |
12295 | more nicely. */ | |
12296 | if (b->loc->next == NULL) | |
12297 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12298 | symtab_to_filename_for_display (b->loc->symtab), |
12299 | b->loc->line_number); | |
f8eba3c6 TT |
12300 | else |
12301 | /* This is not ideal, but each location may have a | |
12302 | different file name, and this at least reflects the | |
12303 | real situation somewhat. */ | |
f00aae0f | 12304 | printf_filtered (": %s.", |
d28cd78a | 12305 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12306 | } |
348d480f PA |
12307 | |
12308 | if (b->loc->next) | |
12309 | { | |
12310 | struct bp_location *loc = b->loc; | |
12311 | int n = 0; | |
12312 | for (; loc; loc = loc->next) | |
12313 | ++n; | |
12314 | printf_filtered (" (%d locations)", n); | |
12315 | } | |
12316 | } | |
12317 | } | |
12318 | ||
348d480f PA |
12319 | /* Default bp_location_ops methods. */ |
12320 | ||
12321 | static void | |
12322 | bp_location_dtor (struct bp_location *self) | |
12323 | { | |
348d480f PA |
12324 | xfree (self->function_name); |
12325 | } | |
12326 | ||
12327 | static const struct bp_location_ops bp_location_ops = | |
12328 | { | |
12329 | bp_location_dtor | |
12330 | }; | |
12331 | ||
c1fc2657 | 12332 | /* Destructor for the breakpoint base class. */ |
348d480f | 12333 | |
c1fc2657 | 12334 | breakpoint::~breakpoint () |
348d480f | 12335 | { |
c1fc2657 SM |
12336 | xfree (this->cond_string); |
12337 | xfree (this->extra_string); | |
12338 | xfree (this->filter); | |
348d480f PA |
12339 | } |
12340 | ||
2060206e PA |
12341 | static struct bp_location * |
12342 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12343 | { |
5625a286 | 12344 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12345 | } |
12346 | ||
2060206e PA |
12347 | static void |
12348 | base_breakpoint_re_set (struct breakpoint *b) | |
12349 | { | |
12350 | /* Nothing to re-set. */ | |
12351 | } | |
12352 | ||
12353 | #define internal_error_pure_virtual_called() \ | |
12354 | gdb_assert_not_reached ("pure virtual function called") | |
12355 | ||
12356 | static int | |
12357 | base_breakpoint_insert_location (struct bp_location *bl) | |
12358 | { | |
12359 | internal_error_pure_virtual_called (); | |
12360 | } | |
12361 | ||
12362 | static int | |
73971819 PA |
12363 | base_breakpoint_remove_location (struct bp_location *bl, |
12364 | enum remove_bp_reason reason) | |
2060206e PA |
12365 | { |
12366 | internal_error_pure_virtual_called (); | |
12367 | } | |
12368 | ||
12369 | static int | |
12370 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12371 | const address_space *aspace, |
09ac7c10 TT |
12372 | CORE_ADDR bp_addr, |
12373 | const struct target_waitstatus *ws) | |
2060206e PA |
12374 | { |
12375 | internal_error_pure_virtual_called (); | |
12376 | } | |
12377 | ||
12378 | static void | |
12379 | base_breakpoint_check_status (bpstat bs) | |
12380 | { | |
12381 | /* Always stop. */ | |
12382 | } | |
12383 | ||
12384 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12385 | errors. */ | |
12386 | ||
12387 | static int | |
12388 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12389 | { | |
12390 | internal_error_pure_virtual_called (); | |
12391 | } | |
12392 | ||
12393 | /* A "resources_needed" breakpoint_ops method that just internal | |
12394 | errors. */ | |
12395 | ||
12396 | static int | |
12397 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12398 | { | |
12399 | internal_error_pure_virtual_called (); | |
12400 | } | |
12401 | ||
12402 | static enum print_stop_action | |
12403 | base_breakpoint_print_it (bpstat bs) | |
12404 | { | |
12405 | internal_error_pure_virtual_called (); | |
12406 | } | |
12407 | ||
12408 | static void | |
12409 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12410 | struct ui_out *uiout) | |
12411 | { | |
12412 | /* nothing */ | |
12413 | } | |
12414 | ||
12415 | static void | |
12416 | base_breakpoint_print_mention (struct breakpoint *b) | |
12417 | { | |
12418 | internal_error_pure_virtual_called (); | |
12419 | } | |
12420 | ||
12421 | static void | |
12422 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12423 | { | |
12424 | internal_error_pure_virtual_called (); | |
12425 | } | |
12426 | ||
983af33b | 12427 | static void |
f00aae0f KS |
12428 | base_breakpoint_create_sals_from_location |
12429 | (const struct event_location *location, | |
12430 | struct linespec_result *canonical, | |
12431 | enum bptype type_wanted) | |
983af33b SDJ |
12432 | { |
12433 | internal_error_pure_virtual_called (); | |
12434 | } | |
12435 | ||
12436 | static void | |
12437 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12438 | struct linespec_result *c, | |
e1e01040 PA |
12439 | gdb::unique_xmalloc_ptr<char> cond_string, |
12440 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12441 | enum bptype type_wanted, |
12442 | enum bpdisp disposition, | |
12443 | int thread, | |
12444 | int task, int ignore_count, | |
12445 | const struct breakpoint_ops *o, | |
12446 | int from_tty, int enabled, | |
44f238bb | 12447 | int internal, unsigned flags) |
983af33b SDJ |
12448 | { |
12449 | internal_error_pure_virtual_called (); | |
12450 | } | |
12451 | ||
6c5b2ebe | 12452 | static std::vector<symtab_and_line> |
f00aae0f KS |
12453 | base_breakpoint_decode_location (struct breakpoint *b, |
12454 | const struct event_location *location, | |
6c5b2ebe | 12455 | struct program_space *search_pspace) |
983af33b SDJ |
12456 | { |
12457 | internal_error_pure_virtual_called (); | |
12458 | } | |
12459 | ||
ab04a2af TT |
12460 | /* The default 'explains_signal' method. */ |
12461 | ||
47591c29 | 12462 | static int |
427cd150 | 12463 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12464 | { |
47591c29 | 12465 | return 1; |
ab04a2af TT |
12466 | } |
12467 | ||
9d6e6e84 HZ |
12468 | /* The default "after_condition_true" method. */ |
12469 | ||
12470 | static void | |
12471 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12472 | { | |
12473 | /* Nothing to do. */ | |
12474 | } | |
12475 | ||
ab04a2af | 12476 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12477 | { |
2060206e PA |
12478 | base_breakpoint_allocate_location, |
12479 | base_breakpoint_re_set, | |
12480 | base_breakpoint_insert_location, | |
12481 | base_breakpoint_remove_location, | |
12482 | base_breakpoint_breakpoint_hit, | |
12483 | base_breakpoint_check_status, | |
12484 | base_breakpoint_resources_needed, | |
12485 | base_breakpoint_works_in_software_mode, | |
12486 | base_breakpoint_print_it, | |
12487 | NULL, | |
12488 | base_breakpoint_print_one_detail, | |
12489 | base_breakpoint_print_mention, | |
983af33b | 12490 | base_breakpoint_print_recreate, |
5f700d83 | 12491 | base_breakpoint_create_sals_from_location, |
983af33b | 12492 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12493 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12494 | base_breakpoint_explains_signal, |
12495 | base_breakpoint_after_condition_true, | |
2060206e PA |
12496 | }; |
12497 | ||
12498 | /* Default breakpoint_ops methods. */ | |
12499 | ||
12500 | static void | |
348d480f PA |
12501 | bkpt_re_set (struct breakpoint *b) |
12502 | { | |
06edf0c0 | 12503 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12504 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12505 | { |
f00aae0f | 12506 | /* Anything without a location can't be re-set. */ |
348d480f | 12507 | delete_breakpoint (b); |
06edf0c0 | 12508 | return; |
348d480f | 12509 | } |
06edf0c0 PA |
12510 | |
12511 | breakpoint_re_set_default (b); | |
348d480f PA |
12512 | } |
12513 | ||
2060206e | 12514 | static int |
348d480f PA |
12515 | bkpt_insert_location (struct bp_location *bl) |
12516 | { | |
cd6c3b4f YQ |
12517 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12518 | ||
579c6ad9 | 12519 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12520 | bl->target_info.placed_address = addr; |
12521 | ||
348d480f | 12522 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12523 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12524 | else |
7c16b83e | 12525 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12526 | } |
12527 | ||
2060206e | 12528 | static int |
73971819 | 12529 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12530 | { |
12531 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12532 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12533 | else | |
73971819 | 12534 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12535 | } |
12536 | ||
2060206e | 12537 | static int |
348d480f | 12538 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12539 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12540 | const struct target_waitstatus *ws) |
348d480f | 12541 | { |
09ac7c10 | 12542 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12543 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12544 | return 0; |
12545 | ||
348d480f PA |
12546 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12547 | aspace, bp_addr)) | |
12548 | return 0; | |
12549 | ||
12550 | if (overlay_debugging /* unmapped overlay section */ | |
12551 | && section_is_overlay (bl->section) | |
12552 | && !section_is_mapped (bl->section)) | |
12553 | return 0; | |
12554 | ||
12555 | return 1; | |
12556 | } | |
12557 | ||
cd1608cc PA |
12558 | static int |
12559 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12560 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12561 | const struct target_waitstatus *ws) |
12562 | { | |
12563 | if (dprintf_style == dprintf_style_agent | |
12564 | && target_can_run_breakpoint_commands ()) | |
12565 | { | |
12566 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12567 | for this address it must be for a breakpoint that happens to | |
12568 | be set at the same address. */ | |
12569 | return 0; | |
12570 | } | |
12571 | ||
12572 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12573 | } | |
12574 | ||
2060206e | 12575 | static int |
348d480f PA |
12576 | bkpt_resources_needed (const struct bp_location *bl) |
12577 | { | |
12578 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12579 | ||
12580 | return 1; | |
12581 | } | |
12582 | ||
2060206e | 12583 | static enum print_stop_action |
348d480f PA |
12584 | bkpt_print_it (bpstat bs) |
12585 | { | |
348d480f PA |
12586 | struct breakpoint *b; |
12587 | const struct bp_location *bl; | |
001c8c33 | 12588 | int bp_temp; |
79a45e25 | 12589 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12590 | |
12591 | gdb_assert (bs->bp_location_at != NULL); | |
12592 | ||
12593 | bl = bs->bp_location_at; | |
12594 | b = bs->breakpoint_at; | |
12595 | ||
001c8c33 PA |
12596 | bp_temp = b->disposition == disp_del; |
12597 | if (bl->address != bl->requested_address) | |
12598 | breakpoint_adjustment_warning (bl->requested_address, | |
12599 | bl->address, | |
12600 | b->number, 1); | |
12601 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12602 | maybe_print_thread_hit_breakpoint (uiout); |
12603 | ||
001c8c33 | 12604 | if (bp_temp) |
112e8700 | 12605 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12606 | else |
112e8700 SM |
12607 | uiout->text ("Breakpoint "); |
12608 | if (uiout->is_mi_like_p ()) | |
348d480f | 12609 | { |
112e8700 | 12610 | uiout->field_string ("reason", |
001c8c33 | 12611 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12612 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12613 | } |
112e8700 SM |
12614 | uiout->field_int ("bkptno", b->number); |
12615 | uiout->text (", "); | |
06edf0c0 | 12616 | |
001c8c33 | 12617 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12618 | } |
12619 | ||
2060206e | 12620 | static void |
06edf0c0 PA |
12621 | bkpt_print_mention (struct breakpoint *b) |
12622 | { | |
112e8700 | 12623 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12624 | return; |
12625 | ||
12626 | switch (b->type) | |
12627 | { | |
12628 | case bp_breakpoint: | |
12629 | case bp_gnu_ifunc_resolver: | |
12630 | if (b->disposition == disp_del) | |
12631 | printf_filtered (_("Temporary breakpoint")); | |
12632 | else | |
12633 | printf_filtered (_("Breakpoint")); | |
12634 | printf_filtered (_(" %d"), b->number); | |
12635 | if (b->type == bp_gnu_ifunc_resolver) | |
12636 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12637 | break; | |
12638 | case bp_hardware_breakpoint: | |
12639 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12640 | break; | |
e7e0cddf SS |
12641 | case bp_dprintf: |
12642 | printf_filtered (_("Dprintf %d"), b->number); | |
12643 | break; | |
06edf0c0 PA |
12644 | } |
12645 | ||
12646 | say_where (b); | |
12647 | } | |
12648 | ||
2060206e | 12649 | static void |
06edf0c0 PA |
12650 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12651 | { | |
12652 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12653 | fprintf_unfiltered (fp, "tbreak"); | |
12654 | else if (tp->type == bp_breakpoint) | |
12655 | fprintf_unfiltered (fp, "break"); | |
12656 | else if (tp->type == bp_hardware_breakpoint | |
12657 | && tp->disposition == disp_del) | |
12658 | fprintf_unfiltered (fp, "thbreak"); | |
12659 | else if (tp->type == bp_hardware_breakpoint) | |
12660 | fprintf_unfiltered (fp, "hbreak"); | |
12661 | else | |
12662 | internal_error (__FILE__, __LINE__, | |
12663 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12664 | ||
f00aae0f | 12665 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12666 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12667 | |
12668 | /* Print out extra_string if this breakpoint is pending. It might | |
12669 | contain, for example, conditions that were set by the user. */ | |
12670 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12671 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12672 | ||
dd11a36c | 12673 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12674 | } |
12675 | ||
983af33b | 12676 | static void |
f00aae0f KS |
12677 | bkpt_create_sals_from_location (const struct event_location *location, |
12678 | struct linespec_result *canonical, | |
12679 | enum bptype type_wanted) | |
983af33b | 12680 | { |
f00aae0f | 12681 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12682 | } |
12683 | ||
12684 | static void | |
12685 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12686 | struct linespec_result *canonical, | |
e1e01040 PA |
12687 | gdb::unique_xmalloc_ptr<char> cond_string, |
12688 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12689 | enum bptype type_wanted, |
12690 | enum bpdisp disposition, | |
12691 | int thread, | |
12692 | int task, int ignore_count, | |
12693 | const struct breakpoint_ops *ops, | |
12694 | int from_tty, int enabled, | |
44f238bb | 12695 | int internal, unsigned flags) |
983af33b | 12696 | { |
023fa29b | 12697 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12698 | std::move (cond_string), |
12699 | std::move (extra_string), | |
e7e0cddf | 12700 | type_wanted, |
983af33b SDJ |
12701 | disposition, thread, task, |
12702 | ignore_count, ops, from_tty, | |
44f238bb | 12703 | enabled, internal, flags); |
983af33b SDJ |
12704 | } |
12705 | ||
6c5b2ebe | 12706 | static std::vector<symtab_and_line> |
f00aae0f KS |
12707 | bkpt_decode_location (struct breakpoint *b, |
12708 | const struct event_location *location, | |
6c5b2ebe | 12709 | struct program_space *search_pspace) |
983af33b | 12710 | { |
6c5b2ebe | 12711 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12712 | } |
12713 | ||
06edf0c0 PA |
12714 | /* Virtual table for internal breakpoints. */ |
12715 | ||
12716 | static void | |
12717 | internal_bkpt_re_set (struct breakpoint *b) | |
12718 | { | |
12719 | switch (b->type) | |
12720 | { | |
12721 | /* Delete overlay event and longjmp master breakpoints; they | |
12722 | will be reset later by breakpoint_re_set. */ | |
12723 | case bp_overlay_event: | |
12724 | case bp_longjmp_master: | |
12725 | case bp_std_terminate_master: | |
12726 | case bp_exception_master: | |
12727 | delete_breakpoint (b); | |
12728 | break; | |
12729 | ||
12730 | /* This breakpoint is special, it's set up when the inferior | |
12731 | starts and we really don't want to touch it. */ | |
12732 | case bp_shlib_event: | |
12733 | ||
12734 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12735 | it is set up, we do not want to touch it. */ | |
12736 | case bp_thread_event: | |
12737 | break; | |
12738 | } | |
12739 | } | |
12740 | ||
12741 | static void | |
12742 | internal_bkpt_check_status (bpstat bs) | |
12743 | { | |
a9b3a50f PA |
12744 | if (bs->breakpoint_at->type == bp_shlib_event) |
12745 | { | |
12746 | /* If requested, stop when the dynamic linker notifies GDB of | |
12747 | events. This allows the user to get control and place | |
12748 | breakpoints in initializer routines for dynamically loaded | |
12749 | objects (among other things). */ | |
12750 | bs->stop = stop_on_solib_events; | |
12751 | bs->print = stop_on_solib_events; | |
12752 | } | |
12753 | else | |
12754 | bs->stop = 0; | |
06edf0c0 PA |
12755 | } |
12756 | ||
12757 | static enum print_stop_action | |
12758 | internal_bkpt_print_it (bpstat bs) | |
12759 | { | |
06edf0c0 | 12760 | struct breakpoint *b; |
06edf0c0 | 12761 | |
06edf0c0 PA |
12762 | b = bs->breakpoint_at; |
12763 | ||
06edf0c0 PA |
12764 | switch (b->type) |
12765 | { | |
348d480f PA |
12766 | case bp_shlib_event: |
12767 | /* Did we stop because the user set the stop_on_solib_events | |
12768 | variable? (If so, we report this as a generic, "Stopped due | |
12769 | to shlib event" message.) */ | |
edcc5120 | 12770 | print_solib_event (0); |
348d480f PA |
12771 | break; |
12772 | ||
12773 | case bp_thread_event: | |
12774 | /* Not sure how we will get here. | |
12775 | GDB should not stop for these breakpoints. */ | |
12776 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12777 | break; |
12778 | ||
12779 | case bp_overlay_event: | |
12780 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12781 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12782 | break; |
12783 | ||
12784 | case bp_longjmp_master: | |
12785 | /* These should never be enabled. */ | |
12786 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12787 | break; |
12788 | ||
12789 | case bp_std_terminate_master: | |
12790 | /* These should never be enabled. */ | |
12791 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12792 | "gdb should not stop!\n")); | |
348d480f PA |
12793 | break; |
12794 | ||
12795 | case bp_exception_master: | |
12796 | /* These should never be enabled. */ | |
12797 | printf_filtered (_("Exception Master Breakpoint: " | |
12798 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12799 | break; |
12800 | } | |
12801 | ||
001c8c33 | 12802 | return PRINT_NOTHING; |
06edf0c0 PA |
12803 | } |
12804 | ||
12805 | static void | |
12806 | internal_bkpt_print_mention (struct breakpoint *b) | |
12807 | { | |
12808 | /* Nothing to mention. These breakpoints are internal. */ | |
12809 | } | |
12810 | ||
06edf0c0 PA |
12811 | /* Virtual table for momentary breakpoints */ |
12812 | ||
12813 | static void | |
12814 | momentary_bkpt_re_set (struct breakpoint *b) | |
12815 | { | |
12816 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12817 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12818 | Otherwise these should have been blown away via the cleanup chain |
12819 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12820 | } | |
12821 | ||
12822 | static void | |
12823 | momentary_bkpt_check_status (bpstat bs) | |
12824 | { | |
12825 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12826 | } | |
12827 | ||
12828 | static enum print_stop_action | |
12829 | momentary_bkpt_print_it (bpstat bs) | |
12830 | { | |
001c8c33 | 12831 | return PRINT_UNKNOWN; |
348d480f PA |
12832 | } |
12833 | ||
06edf0c0 PA |
12834 | static void |
12835 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12836 | { |
06edf0c0 | 12837 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12838 | } |
12839 | ||
e2e4d78b JK |
12840 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12841 | ||
12842 | It gets cleared already on the removal of the first one of such placed | |
12843 | breakpoints. This is OK as they get all removed altogether. */ | |
12844 | ||
c1fc2657 | 12845 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12846 | { |
c1fc2657 | 12847 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12848 | |
c1fc2657 | 12849 | if (tp != NULL) |
e2e4d78b | 12850 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12851 | } |
12852 | ||
55aa24fb SDJ |
12853 | /* Specific methods for probe breakpoints. */ |
12854 | ||
12855 | static int | |
12856 | bkpt_probe_insert_location (struct bp_location *bl) | |
12857 | { | |
12858 | int v = bkpt_insert_location (bl); | |
12859 | ||
12860 | if (v == 0) | |
12861 | { | |
12862 | /* The insertion was successful, now let's set the probe's semaphore | |
12863 | if needed. */ | |
935676c9 | 12864 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12865 | } |
12866 | ||
12867 | return v; | |
12868 | } | |
12869 | ||
12870 | static int | |
73971819 PA |
12871 | bkpt_probe_remove_location (struct bp_location *bl, |
12872 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12873 | { |
12874 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12875 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12876 | |
73971819 | 12877 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12878 | } |
12879 | ||
12880 | static void | |
f00aae0f | 12881 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12882 | struct linespec_result *canonical, |
f00aae0f | 12883 | enum bptype type_wanted) |
55aa24fb SDJ |
12884 | { |
12885 | struct linespec_sals lsal; | |
12886 | ||
c2f4122d | 12887 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12888 | lsal.canonical |
12889 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12890 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12891 | } |
12892 | ||
6c5b2ebe | 12893 | static std::vector<symtab_and_line> |
f00aae0f KS |
12894 | bkpt_probe_decode_location (struct breakpoint *b, |
12895 | const struct event_location *location, | |
6c5b2ebe | 12896 | struct program_space *search_pspace) |
55aa24fb | 12897 | { |
6c5b2ebe PA |
12898 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12899 | if (sals.empty ()) | |
55aa24fb | 12900 | error (_("probe not found")); |
6c5b2ebe | 12901 | return sals; |
55aa24fb SDJ |
12902 | } |
12903 | ||
348d480f | 12904 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12905 | |
348d480f PA |
12906 | static void |
12907 | tracepoint_re_set (struct breakpoint *b) | |
12908 | { | |
12909 | breakpoint_re_set_default (b); | |
12910 | } | |
876fa593 | 12911 | |
348d480f PA |
12912 | static int |
12913 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12914 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12915 | const struct target_waitstatus *ws) |
348d480f PA |
12916 | { |
12917 | /* By definition, the inferior does not report stops at | |
12918 | tracepoints. */ | |
12919 | return 0; | |
74960c60 VP |
12920 | } |
12921 | ||
12922 | static void | |
348d480f PA |
12923 | tracepoint_print_one_detail (const struct breakpoint *self, |
12924 | struct ui_out *uiout) | |
74960c60 | 12925 | { |
d9b3f62e PA |
12926 | struct tracepoint *tp = (struct tracepoint *) self; |
12927 | if (tp->static_trace_marker_id) | |
348d480f PA |
12928 | { |
12929 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12930 | |
112e8700 SM |
12931 | uiout->text ("\tmarker id is "); |
12932 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12933 | tp->static_trace_marker_id); |
112e8700 | 12934 | uiout->text ("\n"); |
348d480f | 12935 | } |
0d381245 VP |
12936 | } |
12937 | ||
a474d7c2 | 12938 | static void |
348d480f | 12939 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12940 | { |
112e8700 | 12941 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12942 | return; |
cc59ec59 | 12943 | |
348d480f PA |
12944 | switch (b->type) |
12945 | { | |
12946 | case bp_tracepoint: | |
12947 | printf_filtered (_("Tracepoint")); | |
12948 | printf_filtered (_(" %d"), b->number); | |
12949 | break; | |
12950 | case bp_fast_tracepoint: | |
12951 | printf_filtered (_("Fast tracepoint")); | |
12952 | printf_filtered (_(" %d"), b->number); | |
12953 | break; | |
12954 | case bp_static_tracepoint: | |
12955 | printf_filtered (_("Static tracepoint")); | |
12956 | printf_filtered (_(" %d"), b->number); | |
12957 | break; | |
12958 | default: | |
12959 | internal_error (__FILE__, __LINE__, | |
12960 | _("unhandled tracepoint type %d"), (int) b->type); | |
12961 | } | |
12962 | ||
12963 | say_where (b); | |
a474d7c2 PA |
12964 | } |
12965 | ||
348d480f | 12966 | static void |
d9b3f62e | 12967 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12968 | { |
d9b3f62e PA |
12969 | struct tracepoint *tp = (struct tracepoint *) self; |
12970 | ||
12971 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12972 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12973 | else if (self->type == bp_static_tracepoint) |
348d480f | 12974 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12975 | else if (self->type == bp_tracepoint) |
348d480f PA |
12976 | fprintf_unfiltered (fp, "trace"); |
12977 | else | |
12978 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12979 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12980 | |
f00aae0f | 12981 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12982 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12983 | print_recreate_thread (self, fp); |
12984 | ||
12985 | if (tp->pass_count) | |
12986 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12987 | } |
12988 | ||
983af33b | 12989 | static void |
f00aae0f KS |
12990 | tracepoint_create_sals_from_location (const struct event_location *location, |
12991 | struct linespec_result *canonical, | |
12992 | enum bptype type_wanted) | |
983af33b | 12993 | { |
f00aae0f | 12994 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12995 | } |
12996 | ||
12997 | static void | |
12998 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12999 | struct linespec_result *canonical, | |
e1e01040 PA |
13000 | gdb::unique_xmalloc_ptr<char> cond_string, |
13001 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13002 | enum bptype type_wanted, |
13003 | enum bpdisp disposition, | |
13004 | int thread, | |
13005 | int task, int ignore_count, | |
13006 | const struct breakpoint_ops *ops, | |
13007 | int from_tty, int enabled, | |
44f238bb | 13008 | int internal, unsigned flags) |
983af33b | 13009 | { |
023fa29b | 13010 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13011 | std::move (cond_string), |
13012 | std::move (extra_string), | |
e7e0cddf | 13013 | type_wanted, |
983af33b SDJ |
13014 | disposition, thread, task, |
13015 | ignore_count, ops, from_tty, | |
44f238bb | 13016 | enabled, internal, flags); |
983af33b SDJ |
13017 | } |
13018 | ||
6c5b2ebe | 13019 | static std::vector<symtab_and_line> |
f00aae0f KS |
13020 | tracepoint_decode_location (struct breakpoint *b, |
13021 | const struct event_location *location, | |
6c5b2ebe | 13022 | struct program_space *search_pspace) |
983af33b | 13023 | { |
6c5b2ebe | 13024 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13025 | } |
13026 | ||
2060206e | 13027 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13028 | |
55aa24fb SDJ |
13029 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13030 | static probe. */ | |
13031 | ||
13032 | static void | |
f00aae0f KS |
13033 | tracepoint_probe_create_sals_from_location |
13034 | (const struct event_location *location, | |
13035 | struct linespec_result *canonical, | |
13036 | enum bptype type_wanted) | |
55aa24fb SDJ |
13037 | { |
13038 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13039 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13040 | } |
13041 | ||
6c5b2ebe | 13042 | static std::vector<symtab_and_line> |
f00aae0f KS |
13043 | tracepoint_probe_decode_location (struct breakpoint *b, |
13044 | const struct event_location *location, | |
6c5b2ebe | 13045 | struct program_space *search_pspace) |
55aa24fb SDJ |
13046 | { |
13047 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13048 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13049 | } |
13050 | ||
13051 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13052 | ||
5c2b4418 HZ |
13053 | /* Dprintf breakpoint_ops methods. */ |
13054 | ||
13055 | static void | |
13056 | dprintf_re_set (struct breakpoint *b) | |
13057 | { | |
13058 | breakpoint_re_set_default (b); | |
13059 | ||
f00aae0f KS |
13060 | /* extra_string should never be non-NULL for dprintf. */ |
13061 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13062 | |
13063 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13064 | 2 - create a dprintf, which resolves fine. | |
13065 | 3 - disconnect from target 1 | |
13066 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13067 | ||
13068 | After steps #3/#4, you'll want the dprintf command list to | |
13069 | be updated, because target 1 and 2 may well return different | |
13070 | answers for target_can_run_breakpoint_commands(). | |
13071 | Given absence of finer grained resetting, we get to do | |
13072 | it all the time. */ | |
13073 | if (b->extra_string != NULL) | |
13074 | update_dprintf_command_list (b); | |
13075 | } | |
13076 | ||
2d9442cc HZ |
13077 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13078 | ||
13079 | static void | |
13080 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13081 | { | |
f00aae0f | 13082 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13083 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13084 | tp->extra_string); |
13085 | print_recreate_thread (tp, fp); | |
13086 | } | |
13087 | ||
9d6e6e84 HZ |
13088 | /* Implement the "after_condition_true" breakpoint_ops method for |
13089 | dprintf. | |
13090 | ||
13091 | dprintf's are implemented with regular commands in their command | |
13092 | list, but we run the commands here instead of before presenting the | |
13093 | stop to the user, as dprintf's don't actually cause a stop. This | |
13094 | also makes it so that the commands of multiple dprintfs at the same | |
13095 | address are all handled. */ | |
13096 | ||
13097 | static void | |
13098 | dprintf_after_condition_true (struct bpstats *bs) | |
13099 | { | |
04afa70c | 13100 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13101 | struct bpstats *tmp_bs_p = &tmp_bs; |
13102 | ||
13103 | /* dprintf's never cause a stop. This wasn't set in the | |
13104 | check_status hook instead because that would make the dprintf's | |
13105 | condition not be evaluated. */ | |
13106 | bs->stop = 0; | |
13107 | ||
13108 | /* Run the command list here. Take ownership of it instead of | |
13109 | copying. We never want these commands to run later in | |
13110 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13111 | be set at same address as this dprintf, or even if running the | |
13112 | commands here throws. */ | |
13113 | tmp_bs.commands = bs->commands; | |
13114 | bs->commands = NULL; | |
9d6e6e84 HZ |
13115 | |
13116 | bpstat_do_actions_1 (&tmp_bs_p); | |
13117 | ||
13118 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13119 | bpstat_do_actions_1 may return early without processing the whole | |
13120 | list. */ | |
9d6e6e84 HZ |
13121 | } |
13122 | ||
983af33b SDJ |
13123 | /* The breakpoint_ops structure to be used on static tracepoints with |
13124 | markers (`-m'). */ | |
13125 | ||
13126 | static void | |
f00aae0f | 13127 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13128 | struct linespec_result *canonical, |
f00aae0f | 13129 | enum bptype type_wanted) |
983af33b SDJ |
13130 | { |
13131 | struct linespec_sals lsal; | |
f00aae0f | 13132 | const char *arg_start, *arg; |
983af33b | 13133 | |
a20714ff | 13134 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13135 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13136 | |
f2fc3015 TT |
13137 | std::string str (arg_start, arg - arg_start); |
13138 | const char *ptr = str.c_str (); | |
a20714ff PA |
13139 | canonical->location |
13140 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13141 | |
8e9e35b1 TT |
13142 | lsal.canonical |
13143 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13144 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13145 | } |
13146 | ||
13147 | static void | |
13148 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13149 | struct linespec_result *canonical, | |
e1e01040 PA |
13150 | gdb::unique_xmalloc_ptr<char> cond_string, |
13151 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13152 | enum bptype type_wanted, |
13153 | enum bpdisp disposition, | |
13154 | int thread, | |
13155 | int task, int ignore_count, | |
13156 | const struct breakpoint_ops *ops, | |
13157 | int from_tty, int enabled, | |
44f238bb | 13158 | int internal, unsigned flags) |
983af33b | 13159 | { |
6c5b2ebe | 13160 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13161 | |
13162 | /* If the user is creating a static tracepoint by marker id | |
13163 | (strace -m MARKER_ID), then store the sals index, so that | |
13164 | breakpoint_re_set can try to match up which of the newly | |
13165 | found markers corresponds to this one, and, don't try to | |
13166 | expand multiple locations for each sal, given than SALS | |
13167 | already should contain all sals for MARKER_ID. */ | |
13168 | ||
6c5b2ebe | 13169 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13170 | { |
6c5b2ebe PA |
13171 | event_location_up location |
13172 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13173 | |
b270e6f9 | 13174 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13175 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13176 | std::move (location), NULL, |
e1e01040 PA |
13177 | std::move (cond_string), |
13178 | std::move (extra_string), | |
e7e0cddf | 13179 | type_wanted, disposition, |
983af33b | 13180 | thread, task, ignore_count, ops, |
44f238bb | 13181 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13182 | canonical->special_display); |
13183 | /* Given that its possible to have multiple markers with | |
13184 | the same string id, if the user is creating a static | |
13185 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13186 | store the sals index, so that breakpoint_re_set can | |
13187 | try to match up which of the newly found markers | |
13188 | corresponds to this one */ | |
13189 | tp->static_trace_marker_id_idx = i; | |
13190 | ||
b270e6f9 | 13191 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13192 | } |
13193 | } | |
13194 | ||
6c5b2ebe | 13195 | static std::vector<symtab_and_line> |
f00aae0f KS |
13196 | strace_marker_decode_location (struct breakpoint *b, |
13197 | const struct event_location *location, | |
6c5b2ebe | 13198 | struct program_space *search_pspace) |
983af33b SDJ |
13199 | { |
13200 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13201 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13202 | |
6c5b2ebe PA |
13203 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13204 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13205 | { |
6c5b2ebe PA |
13206 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13207 | sals.resize (1); | |
13208 | return sals; | |
983af33b SDJ |
13209 | } |
13210 | else | |
13211 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13212 | } | |
13213 | ||
13214 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13215 | ||
13216 | static int | |
13217 | strace_marker_p (struct breakpoint *b) | |
13218 | { | |
13219 | return b->ops == &strace_marker_breakpoint_ops; | |
13220 | } | |
13221 | ||
53a5351d | 13222 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13223 | structures. */ |
c906108c SS |
13224 | |
13225 | void | |
fba45db2 | 13226 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13227 | { |
52f0bd74 | 13228 | struct breakpoint *b; |
c906108c | 13229 | |
8a3fe4f8 | 13230 | gdb_assert (bpt != NULL); |
c906108c | 13231 | |
4a64f543 MS |
13232 | /* Has this bp already been deleted? This can happen because |
13233 | multiple lists can hold pointers to bp's. bpstat lists are | |
13234 | especial culprits. | |
13235 | ||
13236 | One example of this happening is a watchpoint's scope bp. When | |
13237 | the scope bp triggers, we notice that the watchpoint is out of | |
13238 | scope, and delete it. We also delete its scope bp. But the | |
13239 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13240 | That bpstat is then checked for auto-deleting bp's, which are | |
13241 | deleted. | |
13242 | ||
13243 | A real solution to this problem might involve reference counts in | |
13244 | bp's, and/or giving them pointers back to their referencing | |
13245 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13246 | storage when no more references were extent. A cheaper bandaid | |
13247 | was chosen. */ | |
c906108c SS |
13248 | if (bpt->type == bp_none) |
13249 | return; | |
13250 | ||
4a64f543 MS |
13251 | /* At least avoid this stale reference until the reference counting |
13252 | of breakpoints gets resolved. */ | |
d0fb5eae | 13253 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13254 | { |
d0fb5eae | 13255 | struct breakpoint *related; |
3a5c3e22 | 13256 | struct watchpoint *w; |
d0fb5eae JK |
13257 | |
13258 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13259 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13260 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13261 | w = (struct watchpoint *) bpt; |
13262 | else | |
13263 | w = NULL; | |
13264 | if (w != NULL) | |
13265 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13266 | |
13267 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13268 | for (related = bpt; related->related_breakpoint != bpt; | |
13269 | related = related->related_breakpoint); | |
13270 | related->related_breakpoint = bpt->related_breakpoint; | |
13271 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13272 | } |
13273 | ||
a9634178 TJB |
13274 | /* watch_command_1 creates a watchpoint but only sets its number if |
13275 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13276 | a problem in that process, we'll be asked to delete the half-created | |
13277 | watchpoint. In that case, don't announce the deletion. */ | |
13278 | if (bpt->number) | |
13279 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13280 | |
c906108c SS |
13281 | if (breakpoint_chain == bpt) |
13282 | breakpoint_chain = bpt->next; | |
13283 | ||
c906108c SS |
13284 | ALL_BREAKPOINTS (b) |
13285 | if (b->next == bpt) | |
c5aa993b JM |
13286 | { |
13287 | b->next = bpt->next; | |
13288 | break; | |
13289 | } | |
c906108c | 13290 | |
f431efe5 PA |
13291 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13292 | been freed. */ | |
13293 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13294 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13295 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13296 | commands are associated with the bpstat; if we remove it here, | |
13297 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13298 | event-top.c won't do anything, and temporary breakpoints with | |
13299 | commands won't work. */ | |
13300 | ||
13301 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13302 | ||
4a64f543 MS |
13303 | /* Now that breakpoint is removed from breakpoint list, update the |
13304 | global location list. This will remove locations that used to | |
13305 | belong to this breakpoint. Do this before freeing the breakpoint | |
13306 | itself, since remove_breakpoint looks at location's owner. It | |
13307 | might be better design to have location completely | |
13308 | self-contained, but it's not the case now. */ | |
44702360 | 13309 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13310 | |
4a64f543 MS |
13311 | /* On the chance that someone will soon try again to delete this |
13312 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13313 | bpt->type = bp_none; |
4d01a485 | 13314 | delete bpt; |
c906108c SS |
13315 | } |
13316 | ||
51be5b68 PA |
13317 | /* Iterator function to call a user-provided callback function once |
13318 | for each of B and its related breakpoints. */ | |
13319 | ||
13320 | static void | |
13321 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13322 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13323 | { |
13324 | struct breakpoint *related; | |
13325 | ||
13326 | related = b; | |
13327 | do | |
13328 | { | |
13329 | struct breakpoint *next; | |
13330 | ||
13331 | /* FUNCTION may delete RELATED. */ | |
13332 | next = related->related_breakpoint; | |
13333 | ||
13334 | if (next == related) | |
13335 | { | |
13336 | /* RELATED is the last ring entry. */ | |
48649e1b | 13337 | function (related); |
51be5b68 PA |
13338 | |
13339 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13340 | B. There's nothing left to do anyway, so just break | |
13341 | out. */ | |
13342 | break; | |
13343 | } | |
13344 | else | |
48649e1b | 13345 | function (related); |
51be5b68 PA |
13346 | |
13347 | related = next; | |
13348 | } | |
13349 | while (related != b); | |
13350 | } | |
95a42b64 | 13351 | |
4495129a | 13352 | static void |
981a3fb3 | 13353 | delete_command (const char *arg, int from_tty) |
c906108c | 13354 | { |
35df4500 | 13355 | struct breakpoint *b, *b_tmp; |
c906108c | 13356 | |
ea9365bb TT |
13357 | dont_repeat (); |
13358 | ||
c906108c SS |
13359 | if (arg == 0) |
13360 | { | |
13361 | int breaks_to_delete = 0; | |
13362 | ||
46c6471b PA |
13363 | /* Delete all breakpoints if no argument. Do not delete |
13364 | internal breakpoints, these have to be deleted with an | |
13365 | explicit breakpoint number argument. */ | |
c5aa993b | 13366 | ALL_BREAKPOINTS (b) |
46c6471b | 13367 | if (user_breakpoint_p (b)) |
973d738b DJ |
13368 | { |
13369 | breaks_to_delete = 1; | |
13370 | break; | |
13371 | } | |
c906108c SS |
13372 | |
13373 | /* Ask user only if there are some breakpoints to delete. */ | |
13374 | if (!from_tty | |
e2e0b3e5 | 13375 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13376 | { |
35df4500 | 13377 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13378 | if (user_breakpoint_p (b)) |
c5aa993b | 13379 | delete_breakpoint (b); |
c906108c SS |
13380 | } |
13381 | } | |
13382 | else | |
48649e1b TT |
13383 | map_breakpoint_numbers |
13384 | (arg, [&] (breakpoint *b) | |
13385 | { | |
13386 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13387 | }); | |
c906108c SS |
13388 | } |
13389 | ||
c2f4122d PA |
13390 | /* Return true if all locations of B bound to PSPACE are pending. If |
13391 | PSPACE is NULL, all locations of all program spaces are | |
13392 | considered. */ | |
13393 | ||
0d381245 | 13394 | static int |
c2f4122d | 13395 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13396 | { |
c2f4122d PA |
13397 | struct bp_location *loc; |
13398 | ||
13399 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13400 | if ((pspace == NULL | |
13401 | || loc->pspace == pspace) | |
13402 | && !loc->shlib_disabled | |
8645ff69 | 13403 | && !loc->pspace->executing_startup) |
0d381245 VP |
13404 | return 0; |
13405 | return 1; | |
fe3f5fa8 VP |
13406 | } |
13407 | ||
776592bf DE |
13408 | /* Subroutine of update_breakpoint_locations to simplify it. |
13409 | Return non-zero if multiple fns in list LOC have the same name. | |
13410 | Null names are ignored. */ | |
13411 | ||
13412 | static int | |
13413 | ambiguous_names_p (struct bp_location *loc) | |
13414 | { | |
13415 | struct bp_location *l; | |
13416 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13417 | (int (*) (const void *, |
13418 | const void *)) streq, | |
776592bf DE |
13419 | NULL, xcalloc, xfree); |
13420 | ||
13421 | for (l = loc; l != NULL; l = l->next) | |
13422 | { | |
13423 | const char **slot; | |
13424 | const char *name = l->function_name; | |
13425 | ||
13426 | /* Allow for some names to be NULL, ignore them. */ | |
13427 | if (name == NULL) | |
13428 | continue; | |
13429 | ||
13430 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13431 | INSERT); | |
4a64f543 MS |
13432 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13433 | returns NULL. */ | |
776592bf DE |
13434 | if (*slot != NULL) |
13435 | { | |
13436 | htab_delete (htab); | |
13437 | return 1; | |
13438 | } | |
13439 | *slot = name; | |
13440 | } | |
13441 | ||
13442 | htab_delete (htab); | |
13443 | return 0; | |
13444 | } | |
13445 | ||
0fb4aa4b PA |
13446 | /* When symbols change, it probably means the sources changed as well, |
13447 | and it might mean the static tracepoint markers are no longer at | |
13448 | the same address or line numbers they used to be at last we | |
13449 | checked. Losing your static tracepoints whenever you rebuild is | |
13450 | undesirable. This function tries to resync/rematch gdb static | |
13451 | tracepoints with the markers on the target, for static tracepoints | |
13452 | that have not been set by marker id. Static tracepoint that have | |
13453 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13454 | The heuristic is: | |
13455 | ||
13456 | 1) For a tracepoint set at a specific address, look for a marker at | |
13457 | the old PC. If one is found there, assume to be the same marker. | |
13458 | If the name / string id of the marker found is different from the | |
13459 | previous known name, assume that means the user renamed the marker | |
13460 | in the sources, and output a warning. | |
13461 | ||
13462 | 2) For a tracepoint set at a given line number, look for a marker | |
13463 | at the new address of the old line number. If one is found there, | |
13464 | assume to be the same marker. If the name / string id of the | |
13465 | marker found is different from the previous known name, assume that | |
13466 | means the user renamed the marker in the sources, and output a | |
13467 | warning. | |
13468 | ||
13469 | 3) If a marker is no longer found at the same address or line, it | |
13470 | may mean the marker no longer exists. But it may also just mean | |
13471 | the code changed a bit. Maybe the user added a few lines of code | |
13472 | that made the marker move up or down (in line number terms). Ask | |
13473 | the target for info about the marker with the string id as we knew | |
13474 | it. If found, update line number and address in the matching | |
13475 | static tracepoint. This will get confused if there's more than one | |
13476 | marker with the same ID (possible in UST, although unadvised | |
13477 | precisely because it confuses tools). */ | |
13478 | ||
13479 | static struct symtab_and_line | |
13480 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13481 | { | |
d9b3f62e | 13482 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13483 | struct static_tracepoint_marker marker; |
13484 | CORE_ADDR pc; | |
0fb4aa4b PA |
13485 | |
13486 | pc = sal.pc; | |
13487 | if (sal.line) | |
13488 | find_line_pc (sal.symtab, sal.line, &pc); | |
13489 | ||
13490 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13491 | { | |
d9b3f62e | 13492 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13493 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13494 | b->number, | |
d9b3f62e | 13495 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13496 | |
d9b3f62e PA |
13497 | xfree (tp->static_trace_marker_id); |
13498 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13499 | release_static_tracepoint_marker (&marker); |
13500 | ||
13501 | return sal; | |
13502 | } | |
13503 | ||
13504 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13505 | by string ID. */ | |
13506 | if (!sal.explicit_pc | |
13507 | && sal.line != 0 | |
13508 | && sal.symtab != NULL | |
d9b3f62e | 13509 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13510 | { |
13511 | VEC(static_tracepoint_marker_p) *markers; | |
13512 | ||
13513 | markers | |
d9b3f62e | 13514 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13515 | |
13516 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13517 | { | |
0fb4aa4b | 13518 | struct symbol *sym; |
80e1d417 | 13519 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13520 | struct ui_out *uiout = current_uiout; |
67994074 | 13521 | struct explicit_location explicit_loc; |
0fb4aa4b | 13522 | |
80e1d417 | 13523 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13524 | |
d9b3f62e | 13525 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13526 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13527 | |
13528 | warning (_("marker for static tracepoint %d (%s) not " | |
13529 | "found at previous line number"), | |
d9b3f62e | 13530 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13531 | |
51abb421 | 13532 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13533 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13534 | uiout->text ("Now in "); |
0fb4aa4b PA |
13535 | if (sym) |
13536 | { | |
112e8700 SM |
13537 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13538 | uiout->text (" at "); | |
0fb4aa4b | 13539 | } |
112e8700 | 13540 | uiout->field_string ("file", |
05cba821 | 13541 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13542 | uiout->text (":"); |
0fb4aa4b | 13543 | |
112e8700 | 13544 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13545 | { |
0b0865da | 13546 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13547 | |
112e8700 | 13548 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13549 | } |
13550 | ||
112e8700 SM |
13551 | uiout->field_int ("line", sal2.line); |
13552 | uiout->text ("\n"); | |
0fb4aa4b | 13553 | |
80e1d417 | 13554 | b->loc->line_number = sal2.line; |
2f202fde | 13555 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13556 | |
d28cd78a | 13557 | b->location.reset (NULL); |
67994074 KS |
13558 | initialize_explicit_location (&explicit_loc); |
13559 | explicit_loc.source_filename | |
00e52e53 | 13560 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13561 | explicit_loc.line_offset.offset = b->loc->line_number; |
13562 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13563 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13564 | |
13565 | /* Might be nice to check if function changed, and warn if | |
13566 | so. */ | |
13567 | ||
80e1d417 | 13568 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13569 | } |
13570 | } | |
13571 | return sal; | |
13572 | } | |
13573 | ||
8d3788bd VP |
13574 | /* Returns 1 iff locations A and B are sufficiently same that |
13575 | we don't need to report breakpoint as changed. */ | |
13576 | ||
13577 | static int | |
13578 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13579 | { | |
13580 | while (a && b) | |
13581 | { | |
13582 | if (a->address != b->address) | |
13583 | return 0; | |
13584 | ||
13585 | if (a->shlib_disabled != b->shlib_disabled) | |
13586 | return 0; | |
13587 | ||
13588 | if (a->enabled != b->enabled) | |
13589 | return 0; | |
13590 | ||
13591 | a = a->next; | |
13592 | b = b->next; | |
13593 | } | |
13594 | ||
13595 | if ((a == NULL) != (b == NULL)) | |
13596 | return 0; | |
13597 | ||
13598 | return 1; | |
13599 | } | |
13600 | ||
c2f4122d PA |
13601 | /* Split all locations of B that are bound to PSPACE out of B's |
13602 | location list to a separate list and return that list's head. If | |
13603 | PSPACE is NULL, hoist out all locations of B. */ | |
13604 | ||
13605 | static struct bp_location * | |
13606 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13607 | { | |
13608 | struct bp_location head; | |
13609 | struct bp_location *i = b->loc; | |
13610 | struct bp_location **i_link = &b->loc; | |
13611 | struct bp_location *hoisted = &head; | |
13612 | ||
13613 | if (pspace == NULL) | |
13614 | { | |
13615 | i = b->loc; | |
13616 | b->loc = NULL; | |
13617 | return i; | |
13618 | } | |
13619 | ||
13620 | head.next = NULL; | |
13621 | ||
13622 | while (i != NULL) | |
13623 | { | |
13624 | if (i->pspace == pspace) | |
13625 | { | |
13626 | *i_link = i->next; | |
13627 | i->next = NULL; | |
13628 | hoisted->next = i; | |
13629 | hoisted = i; | |
13630 | } | |
13631 | else | |
13632 | i_link = &i->next; | |
13633 | i = *i_link; | |
13634 | } | |
13635 | ||
13636 | return head.next; | |
13637 | } | |
13638 | ||
13639 | /* Create new breakpoint locations for B (a hardware or software | |
13640 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13641 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13642 | FILTER_PSPACE. Locations of other program spaces are left | |
13643 | untouched. */ | |
f1310107 | 13644 | |
0e30163f | 13645 | void |
0d381245 | 13646 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13647 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13648 | gdb::array_view<const symtab_and_line> sals, |
13649 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13650 | { |
c2f4122d | 13651 | struct bp_location *existing_locations; |
0d381245 | 13652 | |
6c5b2ebe | 13653 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13654 | { |
13655 | /* Ranged breakpoints have only one start location and one end | |
13656 | location. */ | |
13657 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13658 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13659 | "multiple locations found\n"), | |
13660 | b->number); | |
13661 | return; | |
13662 | } | |
f1310107 | 13663 | |
4a64f543 MS |
13664 | /* If there's no new locations, and all existing locations are |
13665 | pending, don't do anything. This optimizes the common case where | |
13666 | all locations are in the same shared library, that was unloaded. | |
13667 | We'd like to retain the location, so that when the library is | |
13668 | loaded again, we don't loose the enabled/disabled status of the | |
13669 | individual locations. */ | |
6c5b2ebe | 13670 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13671 | return; |
13672 | ||
c2f4122d | 13673 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13674 | |
6c5b2ebe | 13675 | for (const auto &sal : sals) |
fe3f5fa8 | 13676 | { |
f8eba3c6 TT |
13677 | struct bp_location *new_loc; |
13678 | ||
6c5b2ebe | 13679 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13680 | |
6c5b2ebe | 13681 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13682 | |
0d381245 VP |
13683 | /* Reparse conditions, they might contain references to the |
13684 | old symtab. */ | |
13685 | if (b->cond_string != NULL) | |
13686 | { | |
bbc13ae3 | 13687 | const char *s; |
fe3f5fa8 | 13688 | |
0d381245 | 13689 | s = b->cond_string; |
492d29ea | 13690 | TRY |
0d381245 | 13691 | { |
6c5b2ebe PA |
13692 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13693 | block_for_pc (sal.pc), | |
0d381245 VP |
13694 | 0); |
13695 | } | |
492d29ea | 13696 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13697 | { |
3e43a32a MS |
13698 | warning (_("failed to reevaluate condition " |
13699 | "for breakpoint %d: %s"), | |
0d381245 VP |
13700 | b->number, e.message); |
13701 | new_loc->enabled = 0; | |
13702 | } | |
492d29ea | 13703 | END_CATCH |
0d381245 | 13704 | } |
fe3f5fa8 | 13705 | |
6c5b2ebe | 13706 | if (!sals_end.empty ()) |
f1310107 | 13707 | { |
6c5b2ebe | 13708 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13709 | |
6c5b2ebe | 13710 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13711 | } |
0d381245 | 13712 | } |
fe3f5fa8 | 13713 | |
4a64f543 MS |
13714 | /* If possible, carry over 'disable' status from existing |
13715 | breakpoints. */ | |
0d381245 VP |
13716 | { |
13717 | struct bp_location *e = existing_locations; | |
776592bf DE |
13718 | /* If there are multiple breakpoints with the same function name, |
13719 | e.g. for inline functions, comparing function names won't work. | |
13720 | Instead compare pc addresses; this is just a heuristic as things | |
13721 | may have moved, but in practice it gives the correct answer | |
13722 | often enough until a better solution is found. */ | |
13723 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13724 | ||
0d381245 VP |
13725 | for (; e; e = e->next) |
13726 | { | |
13727 | if (!e->enabled && e->function_name) | |
13728 | { | |
13729 | struct bp_location *l = b->loc; | |
776592bf DE |
13730 | if (have_ambiguous_names) |
13731 | { | |
13732 | for (; l; l = l->next) | |
f1310107 | 13733 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13734 | { |
13735 | l->enabled = 0; | |
13736 | break; | |
13737 | } | |
13738 | } | |
13739 | else | |
13740 | { | |
13741 | for (; l; l = l->next) | |
13742 | if (l->function_name | |
13743 | && strcmp (e->function_name, l->function_name) == 0) | |
13744 | { | |
13745 | l->enabled = 0; | |
13746 | break; | |
13747 | } | |
13748 | } | |
0d381245 VP |
13749 | } |
13750 | } | |
13751 | } | |
fe3f5fa8 | 13752 | |
8d3788bd VP |
13753 | if (!locations_are_equal (existing_locations, b->loc)) |
13754 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13755 | } |
13756 | ||
f00aae0f | 13757 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13758 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13759 | ||
6c5b2ebe | 13760 | static std::vector<symtab_and_line> |
f00aae0f | 13761 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13762 | struct program_space *search_pspace, int *found) |
ef23e705 | 13763 | { |
492d29ea | 13764 | struct gdb_exception exception = exception_none; |
ef23e705 | 13765 | |
983af33b | 13766 | gdb_assert (b->ops != NULL); |
ef23e705 | 13767 | |
6c5b2ebe PA |
13768 | std::vector<symtab_and_line> sals; |
13769 | ||
492d29ea | 13770 | TRY |
ef23e705 | 13771 | { |
6c5b2ebe | 13772 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13773 | } |
492d29ea | 13774 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13775 | { |
13776 | int not_found_and_ok = 0; | |
492d29ea PA |
13777 | |
13778 | exception = e; | |
13779 | ||
ef23e705 TJB |
13780 | /* For pending breakpoints, it's expected that parsing will |
13781 | fail until the right shared library is loaded. User has | |
13782 | already told to create pending breakpoints and don't need | |
13783 | extra messages. If breakpoint is in bp_shlib_disabled | |
13784 | state, then user already saw the message about that | |
13785 | breakpoint being disabled, and don't want to see more | |
13786 | errors. */ | |
58438ac1 | 13787 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13788 | && (b->condition_not_parsed |
13789 | || (b->loc != NULL | |
13790 | && search_pspace != NULL | |
13791 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13792 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13793 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13794 | || b->enable_state == bp_disabled)) |
13795 | not_found_and_ok = 1; | |
13796 | ||
13797 | if (!not_found_and_ok) | |
13798 | { | |
13799 | /* We surely don't want to warn about the same breakpoint | |
13800 | 10 times. One solution, implemented here, is disable | |
13801 | the breakpoint on error. Another solution would be to | |
13802 | have separate 'warning emitted' flag. Since this | |
13803 | happens only when a binary has changed, I don't know | |
13804 | which approach is better. */ | |
13805 | b->enable_state = bp_disabled; | |
13806 | throw_exception (e); | |
13807 | } | |
13808 | } | |
492d29ea | 13809 | END_CATCH |
ef23e705 | 13810 | |
492d29ea | 13811 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13812 | { |
6c5b2ebe PA |
13813 | for (auto &sal : sals) |
13814 | resolve_sal_pc (&sal); | |
f00aae0f | 13815 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13816 | { |
ed1d1739 KS |
13817 | char *cond_string, *extra_string; |
13818 | int thread, task; | |
ef23e705 | 13819 | |
6c5b2ebe | 13820 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13821 | &cond_string, &thread, &task, |
13822 | &extra_string); | |
f00aae0f | 13823 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13824 | if (cond_string) |
13825 | b->cond_string = cond_string; | |
13826 | b->thread = thread; | |
13827 | b->task = task; | |
e7e0cddf | 13828 | if (extra_string) |
f00aae0f KS |
13829 | { |
13830 | xfree (b->extra_string); | |
13831 | b->extra_string = extra_string; | |
13832 | } | |
ef23e705 TJB |
13833 | b->condition_not_parsed = 0; |
13834 | } | |
13835 | ||
983af33b | 13836 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13837 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13838 | |
58438ac1 TT |
13839 | *found = 1; |
13840 | } | |
13841 | else | |
13842 | *found = 0; | |
ef23e705 TJB |
13843 | |
13844 | return sals; | |
13845 | } | |
13846 | ||
348d480f PA |
13847 | /* The default re_set method, for typical hardware or software |
13848 | breakpoints. Reevaluate the breakpoint and recreate its | |
13849 | locations. */ | |
13850 | ||
13851 | static void | |
28010a5d | 13852 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13853 | { |
c2f4122d | 13854 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13855 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13856 | |
6c5b2ebe PA |
13857 | int found; |
13858 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13859 | filter_pspace, &found); | |
ef23e705 | 13860 | if (found) |
6c5b2ebe | 13861 | expanded = std::move (sals); |
ef23e705 | 13862 | |
f00aae0f | 13863 | if (b->location_range_end != NULL) |
f1310107 | 13864 | { |
6c5b2ebe PA |
13865 | std::vector<symtab_and_line> sals_end |
13866 | = location_to_sals (b, b->location_range_end.get (), | |
13867 | filter_pspace, &found); | |
f1310107 | 13868 | if (found) |
6c5b2ebe | 13869 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13870 | } |
13871 | ||
c2f4122d | 13872 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13873 | } |
13874 | ||
983af33b SDJ |
13875 | /* Default method for creating SALs from an address string. It basically |
13876 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13877 | ||
13878 | static void | |
f00aae0f KS |
13879 | create_sals_from_location_default (const struct event_location *location, |
13880 | struct linespec_result *canonical, | |
13881 | enum bptype type_wanted) | |
983af33b | 13882 | { |
f00aae0f | 13883 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13884 | } |
13885 | ||
13886 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13887 | function for the `create_breakpoints_sal' method of | |
13888 | breakpoint_ops. */ | |
13889 | ||
13890 | static void | |
13891 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13892 | struct linespec_result *canonical, | |
e1e01040 PA |
13893 | gdb::unique_xmalloc_ptr<char> cond_string, |
13894 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13895 | enum bptype type_wanted, |
13896 | enum bpdisp disposition, | |
13897 | int thread, | |
13898 | int task, int ignore_count, | |
13899 | const struct breakpoint_ops *ops, | |
13900 | int from_tty, int enabled, | |
44f238bb | 13901 | int internal, unsigned flags) |
983af33b | 13902 | { |
e1e01040 PA |
13903 | create_breakpoints_sal (gdbarch, canonical, |
13904 | std::move (cond_string), | |
13905 | std::move (extra_string), | |
983af33b SDJ |
13906 | type_wanted, disposition, |
13907 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13908 | enabled, internal, flags); |
983af33b SDJ |
13909 | } |
13910 | ||
13911 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13912 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13913 | |
6c5b2ebe | 13914 | static std::vector<symtab_and_line> |
f00aae0f KS |
13915 | decode_location_default (struct breakpoint *b, |
13916 | const struct event_location *location, | |
6c5b2ebe | 13917 | struct program_space *search_pspace) |
983af33b SDJ |
13918 | { |
13919 | struct linespec_result canonical; | |
13920 | ||
c2f4122d | 13921 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13922 | (struct symtab *) NULL, 0, |
13923 | &canonical, multiple_symbols_all, | |
13924 | b->filter); | |
13925 | ||
13926 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13927 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13928 | |
6c5b2ebe | 13929 | if (!canonical.lsals.empty ()) |
983af33b | 13930 | { |
6c5b2ebe PA |
13931 | const linespec_sals &lsal = canonical.lsals[0]; |
13932 | return std::move (lsal.sals); | |
983af33b | 13933 | } |
6c5b2ebe | 13934 | return {}; |
983af33b SDJ |
13935 | } |
13936 | ||
bf469271 | 13937 | /* Reset a breakpoint. */ |
c906108c | 13938 | |
bf469271 PA |
13939 | static void |
13940 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13941 | { |
fdf44873 TT |
13942 | input_radix = b->input_radix; |
13943 | set_language (b->language); | |
c906108c | 13944 | |
348d480f | 13945 | b->ops->re_set (b); |
c906108c SS |
13946 | } |
13947 | ||
c2f4122d PA |
13948 | /* Re-set breakpoint locations for the current program space. |
13949 | Locations bound to other program spaces are left untouched. */ | |
13950 | ||
c906108c | 13951 | void |
69de3c6a | 13952 | breakpoint_re_set (void) |
c906108c | 13953 | { |
35df4500 | 13954 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13955 | |
c5aa993b | 13956 | { |
fdf44873 TT |
13957 | scoped_restore_current_language save_language; |
13958 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13959 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13960 | |
5ed8105e PA |
13961 | /* Note: we must not try to insert locations until after all |
13962 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13963 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13964 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13965 | |
5ed8105e PA |
13966 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13967 | { | |
bf469271 PA |
13968 | TRY |
13969 | { | |
13970 | breakpoint_re_set_one (b); | |
13971 | } | |
13972 | CATCH (ex, RETURN_MASK_ALL) | |
13973 | { | |
13974 | exception_fprintf (gdb_stderr, ex, | |
13975 | "Error in re-setting breakpoint %d: ", | |
13976 | b->number); | |
13977 | } | |
13978 | END_CATCH | |
5ed8105e | 13979 | } |
5ed8105e PA |
13980 | |
13981 | jit_breakpoint_re_set (); | |
13982 | } | |
6c95b8df | 13983 | |
af02033e PP |
13984 | create_overlay_event_breakpoint (); |
13985 | create_longjmp_master_breakpoint (); | |
13986 | create_std_terminate_master_breakpoint (); | |
186c406b | 13987 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13988 | |
13989 | /* Now we can insert. */ | |
13990 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13991 | } |
13992 | \f | |
c906108c SS |
13993 | /* Reset the thread number of this breakpoint: |
13994 | ||
13995 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13996 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13997 | void |
fba45db2 | 13998 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13999 | { |
14000 | if (b->thread != -1) | |
14001 | { | |
39f77062 | 14002 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14003 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14004 | |
14005 | /* We're being called after following a fork. The new fork is | |
14006 | selected as current, and unless this was a vfork will have a | |
14007 | different program space from the original thread. Reset that | |
14008 | as well. */ | |
14009 | b->loc->pspace = current_program_space; | |
c906108c SS |
14010 | } |
14011 | } | |
14012 | ||
03ac34d5 MS |
14013 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14014 | If from_tty is nonzero, it prints a message to that effect, | |
14015 | which ends with a period (no newline). */ | |
14016 | ||
c906108c | 14017 | void |
fba45db2 | 14018 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14019 | { |
52f0bd74 | 14020 | struct breakpoint *b; |
c906108c SS |
14021 | |
14022 | if (count < 0) | |
14023 | count = 0; | |
14024 | ||
14025 | ALL_BREAKPOINTS (b) | |
14026 | if (b->number == bptnum) | |
c5aa993b | 14027 | { |
d77f58be SS |
14028 | if (is_tracepoint (b)) |
14029 | { | |
14030 | if (from_tty && count != 0) | |
14031 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14032 | bptnum); | |
14033 | return; | |
14034 | } | |
14035 | ||
c5aa993b | 14036 | b->ignore_count = count; |
221ea385 KS |
14037 | if (from_tty) |
14038 | { | |
14039 | if (count == 0) | |
3e43a32a MS |
14040 | printf_filtered (_("Will stop next time " |
14041 | "breakpoint %d is reached."), | |
221ea385 KS |
14042 | bptnum); |
14043 | else if (count == 1) | |
a3f17187 | 14044 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14045 | bptnum); |
14046 | else | |
3e43a32a MS |
14047 | printf_filtered (_("Will ignore next %d " |
14048 | "crossings of breakpoint %d."), | |
221ea385 KS |
14049 | count, bptnum); |
14050 | } | |
8d3788bd | 14051 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14052 | return; |
14053 | } | |
c906108c | 14054 | |
8a3fe4f8 | 14055 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14056 | } |
14057 | ||
c906108c SS |
14058 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14059 | ||
14060 | static void | |
0b39b52e | 14061 | ignore_command (const char *args, int from_tty) |
c906108c | 14062 | { |
0b39b52e | 14063 | const char *p = args; |
52f0bd74 | 14064 | int num; |
c906108c SS |
14065 | |
14066 | if (p == 0) | |
e2e0b3e5 | 14067 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14068 | |
c906108c | 14069 | num = get_number (&p); |
5c44784c | 14070 | if (num == 0) |
8a3fe4f8 | 14071 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14072 | if (*p == 0) |
8a3fe4f8 | 14073 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14074 | |
14075 | set_ignore_count (num, | |
14076 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14077 | from_tty); | |
221ea385 KS |
14078 | if (from_tty) |
14079 | printf_filtered ("\n"); | |
c906108c SS |
14080 | } |
14081 | \f | |
d0fe4701 XR |
14082 | |
14083 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14084 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14085 | |
14086 | static void | |
d0fe4701 XR |
14087 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14088 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14089 | { |
d0fe4701 XR |
14090 | if (bp_num_range.first == 0) |
14091 | { | |
14092 | warning (_("bad breakpoint number at or near '%d'"), | |
14093 | bp_num_range.first); | |
14094 | } | |
14095 | else | |
c906108c | 14096 | { |
d0fe4701 | 14097 | struct breakpoint *b, *tmp; |
197f0a60 | 14098 | |
d0fe4701 | 14099 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14100 | { |
d0fe4701 XR |
14101 | bool match = false; |
14102 | ||
5c44784c | 14103 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14104 | if (b->number == i) |
5c44784c | 14105 | { |
bfd28288 | 14106 | match = true; |
48649e1b | 14107 | function (b); |
11cf8741 | 14108 | break; |
5c44784c | 14109 | } |
bfd28288 | 14110 | if (!match) |
d0fe4701 | 14111 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14112 | } |
c906108c SS |
14113 | } |
14114 | } | |
14115 | ||
d0fe4701 XR |
14116 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14117 | ARGS. */ | |
14118 | ||
14119 | static void | |
14120 | map_breakpoint_numbers (const char *args, | |
14121 | gdb::function_view<void (breakpoint *)> function) | |
14122 | { | |
14123 | if (args == NULL || *args == '\0') | |
14124 | error_no_arg (_("one or more breakpoint numbers")); | |
14125 | ||
14126 | number_or_range_parser parser (args); | |
14127 | ||
14128 | while (!parser.finished ()) | |
14129 | { | |
14130 | int num = parser.get_number (); | |
14131 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14132 | } | |
14133 | } | |
14134 | ||
14135 | /* Return the breakpoint location structure corresponding to the | |
14136 | BP_NUM and LOC_NUM values. */ | |
14137 | ||
0d381245 | 14138 | static struct bp_location * |
d0fe4701 | 14139 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14140 | { |
0d381245 | 14141 | struct breakpoint *b; |
0d381245 VP |
14142 | |
14143 | ALL_BREAKPOINTS (b) | |
14144 | if (b->number == bp_num) | |
14145 | { | |
14146 | break; | |
14147 | } | |
14148 | ||
14149 | if (!b || b->number != bp_num) | |
d0fe4701 | 14150 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14151 | |
0d381245 | 14152 | if (loc_num == 0) |
d0fe4701 | 14153 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14154 | |
d0fe4701 XR |
14155 | int n = 0; |
14156 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14157 | if (++n == loc_num) | |
14158 | return loc; | |
14159 | ||
14160 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14161 | } |
14162 | ||
95e95a6d PA |
14163 | /* Modes of operation for extract_bp_num. */ |
14164 | enum class extract_bp_kind | |
14165 | { | |
14166 | /* Extracting a breakpoint number. */ | |
14167 | bp, | |
14168 | ||
14169 | /* Extracting a location number. */ | |
14170 | loc, | |
14171 | }; | |
14172 | ||
14173 | /* Extract a breakpoint or location number (as determined by KIND) | |
14174 | from the string starting at START. TRAILER is a character which | |
14175 | can be found after the number. If you don't want a trailer, use | |
14176 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14177 | string. This always returns a positive integer. */ | |
14178 | ||
14179 | static int | |
14180 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14181 | int trailer, const char **end_out = NULL) | |
14182 | { | |
14183 | const char *end = start; | |
14184 | int num = get_number_trailer (&end, trailer); | |
14185 | if (num < 0) | |
14186 | error (kind == extract_bp_kind::bp | |
14187 | ? _("Negative breakpoint number '%.*s'") | |
14188 | : _("Negative breakpoint location number '%.*s'"), | |
14189 | int (end - start), start); | |
14190 | if (num == 0) | |
14191 | error (kind == extract_bp_kind::bp | |
14192 | ? _("Bad breakpoint number '%.*s'") | |
14193 | : _("Bad breakpoint location number '%.*s'"), | |
14194 | int (end - start), start); | |
14195 | ||
14196 | if (end_out != NULL) | |
14197 | *end_out = end; | |
14198 | return num; | |
14199 | } | |
14200 | ||
14201 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14202 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14203 | representing the (inclusive) range. The returned pair's elements | |
14204 | are always positive integers. */ | |
14205 | ||
14206 | static std::pair<int, int> | |
14207 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14208 | const std::string &arg, | |
14209 | std::string::size_type arg_offset) | |
14210 | { | |
14211 | std::pair<int, int> range; | |
14212 | const char *bp_loc = &arg[arg_offset]; | |
14213 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14214 | if (dash != std::string::npos) | |
14215 | { | |
14216 | /* bp_loc is a range (x-z). */ | |
14217 | if (arg.length () == dash + 1) | |
14218 | error (kind == extract_bp_kind::bp | |
14219 | ? _("Bad breakpoint number at or near: '%s'") | |
14220 | : _("Bad breakpoint location number at or near: '%s'"), | |
14221 | bp_loc); | |
14222 | ||
14223 | const char *end; | |
14224 | const char *start_first = bp_loc; | |
14225 | const char *start_second = &arg[dash + 1]; | |
14226 | range.first = extract_bp_num (kind, start_first, '-'); | |
14227 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14228 | ||
14229 | if (range.first > range.second) | |
14230 | error (kind == extract_bp_kind::bp | |
14231 | ? _("Inverted breakpoint range at '%.*s'") | |
14232 | : _("Inverted breakpoint location range at '%.*s'"), | |
14233 | int (end - start_first), start_first); | |
14234 | } | |
14235 | else | |
14236 | { | |
14237 | /* bp_loc is a single value. */ | |
14238 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14239 | range.second = range.first; | |
14240 | } | |
14241 | return range; | |
14242 | } | |
14243 | ||
d0fe4701 XR |
14244 | /* Extract the breakpoint/location range specified by ARG. Returns |
14245 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14246 | BP_LOC_RANGE. | |
14247 | ||
14248 | ARG may be in any of the following forms: | |
14249 | ||
14250 | x where 'x' is a breakpoint number. | |
14251 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14252 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14253 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14254 | location number range. | |
14255 | */ | |
14256 | ||
cc638e86 | 14257 | static void |
d0fe4701 XR |
14258 | extract_bp_number_and_location (const std::string &arg, |
14259 | std::pair<int, int> &bp_num_range, | |
14260 | std::pair<int, int> &bp_loc_range) | |
14261 | { | |
14262 | std::string::size_type dot = arg.find ('.'); | |
14263 | ||
14264 | if (dot != std::string::npos) | |
14265 | { | |
14266 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14267 | ||
14268 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14269 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14270 | |
95e95a6d PA |
14271 | bp_num_range.first |
14272 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14273 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14274 | |
95e95a6d PA |
14275 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14276 | arg, dot + 1); | |
d0fe4701 XR |
14277 | } |
14278 | else | |
14279 | { | |
14280 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14281 | |
95e95a6d | 14282 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14283 | bp_loc_range.first = 0; |
14284 | bp_loc_range.second = 0; | |
14285 | } | |
d0fe4701 XR |
14286 | } |
14287 | ||
14288 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14289 | specifies whether to enable or disable. */ | |
14290 | ||
14291 | static void | |
14292 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14293 | { | |
14294 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14295 | if (loc != NULL) | |
14296 | { | |
14297 | if (loc->enabled != enable) | |
14298 | { | |
14299 | loc->enabled = enable; | |
14300 | mark_breakpoint_location_modified (loc); | |
14301 | } | |
14302 | if (target_supports_enable_disable_tracepoint () | |
14303 | && current_trace_status ()->running && loc->owner | |
14304 | && is_tracepoint (loc->owner)) | |
14305 | target_disable_tracepoint (loc); | |
14306 | } | |
14307 | update_global_location_list (UGLL_DONT_INSERT); | |
14308 | } | |
14309 | ||
14310 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14311 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14312 | (inclusive) range of location numbers of that breakpoint to | |
14313 | enable/disable. ENABLE specifies whether to enable or disable the | |
14314 | location. */ | |
14315 | ||
14316 | static void | |
14317 | enable_disable_breakpoint_location_range (int bp_num, | |
14318 | std::pair<int, int> &bp_loc_range, | |
14319 | bool enable) | |
14320 | { | |
14321 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14322 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14323 | } | |
0d381245 | 14324 | |
1900040c MS |
14325 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14326 | If from_tty is nonzero, it prints a message to that effect, | |
14327 | which ends with a period (no newline). */ | |
14328 | ||
c906108c | 14329 | void |
fba45db2 | 14330 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14331 | { |
14332 | /* Never disable a watchpoint scope breakpoint; we want to | |
14333 | hit them when we leave scope so we can delete both the | |
14334 | watchpoint and its scope breakpoint at that time. */ | |
14335 | if (bpt->type == bp_watchpoint_scope) | |
14336 | return; | |
14337 | ||
b5de0fa7 | 14338 | bpt->enable_state = bp_disabled; |
c906108c | 14339 | |
b775012e LM |
14340 | /* Mark breakpoint locations modified. */ |
14341 | mark_breakpoint_modified (bpt); | |
14342 | ||
d248b706 KY |
14343 | if (target_supports_enable_disable_tracepoint () |
14344 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14345 | { | |
14346 | struct bp_location *location; | |
14347 | ||
14348 | for (location = bpt->loc; location; location = location->next) | |
14349 | target_disable_tracepoint (location); | |
14350 | } | |
14351 | ||
44702360 | 14352 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14353 | |
8d3788bd | 14354 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14355 | } |
14356 | ||
d0fe4701 XR |
14357 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14358 | specified in ARGS. ARGS may be in any of the formats handled by | |
14359 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14360 | or disable the breakpoints/locations. */ | |
14361 | ||
c906108c | 14362 | static void |
d0fe4701 | 14363 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14364 | { |
c906108c | 14365 | if (args == 0) |
46c6471b PA |
14366 | { |
14367 | struct breakpoint *bpt; | |
14368 | ||
14369 | ALL_BREAKPOINTS (bpt) | |
14370 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14371 | { |
14372 | if (enable) | |
14373 | enable_breakpoint (bpt); | |
14374 | else | |
14375 | disable_breakpoint (bpt); | |
14376 | } | |
46c6471b | 14377 | } |
9eaabc75 | 14378 | else |
0d381245 | 14379 | { |
cb791d59 | 14380 | std::string num = extract_arg (&args); |
9eaabc75 | 14381 | |
cb791d59 | 14382 | while (!num.empty ()) |
d248b706 | 14383 | { |
d0fe4701 | 14384 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14385 | |
cc638e86 PA |
14386 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14387 | ||
14388 | if (bp_loc_range.first == bp_loc_range.second | |
14389 | && bp_loc_range.first == 0) | |
d0fe4701 | 14390 | { |
cc638e86 PA |
14391 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14392 | map_breakpoint_number_range (bp_num_range, | |
14393 | enable | |
14394 | ? enable_breakpoint | |
14395 | : disable_breakpoint); | |
14396 | } | |
14397 | else | |
14398 | { | |
14399 | /* Handle breakpoint ids with formats 'x.y' or | |
14400 | 'x.y-z'. */ | |
14401 | enable_disable_breakpoint_location_range | |
14402 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14403 | } |
9eaabc75 | 14404 | num = extract_arg (&args); |
d248b706 | 14405 | } |
0d381245 | 14406 | } |
c906108c SS |
14407 | } |
14408 | ||
d0fe4701 XR |
14409 | /* The disable command disables the specified breakpoints/locations |
14410 | (or all defined breakpoints) so they're no longer effective in | |
14411 | stopping the inferior. ARGS may be in any of the forms defined in | |
14412 | extract_bp_number_and_location. */ | |
14413 | ||
14414 | static void | |
14415 | disable_command (const char *args, int from_tty) | |
14416 | { | |
14417 | enable_disable_command (args, from_tty, false); | |
14418 | } | |
14419 | ||
c906108c | 14420 | static void |
816338b5 SS |
14421 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14422 | int count) | |
c906108c | 14423 | { |
afe38095 | 14424 | int target_resources_ok; |
c906108c SS |
14425 | |
14426 | if (bpt->type == bp_hardware_breakpoint) | |
14427 | { | |
14428 | int i; | |
c5aa993b | 14429 | i = hw_breakpoint_used_count (); |
53a5351d | 14430 | target_resources_ok = |
d92524f1 | 14431 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14432 | i + 1, 0); |
c906108c | 14433 | if (target_resources_ok == 0) |
8a3fe4f8 | 14434 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14435 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14436 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14437 | } |
14438 | ||
cc60f2e3 | 14439 | if (is_watchpoint (bpt)) |
c906108c | 14440 | { |
d07205c2 | 14441 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14442 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14443 | |
492d29ea | 14444 | TRY |
c906108c | 14445 | { |
3a5c3e22 PA |
14446 | struct watchpoint *w = (struct watchpoint *) bpt; |
14447 | ||
1e718ff1 TJB |
14448 | orig_enable_state = bpt->enable_state; |
14449 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14450 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14451 | } |
492d29ea | 14452 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14453 | { |
1e718ff1 | 14454 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14455 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14456 | bpt->number); | |
14457 | return; | |
c5aa993b | 14458 | } |
492d29ea | 14459 | END_CATCH |
c906108c | 14460 | } |
0101ce28 | 14461 | |
b775012e LM |
14462 | bpt->enable_state = bp_enabled; |
14463 | ||
14464 | /* Mark breakpoint locations modified. */ | |
14465 | mark_breakpoint_modified (bpt); | |
14466 | ||
d248b706 KY |
14467 | if (target_supports_enable_disable_tracepoint () |
14468 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14469 | { | |
14470 | struct bp_location *location; | |
14471 | ||
14472 | for (location = bpt->loc; location; location = location->next) | |
14473 | target_enable_tracepoint (location); | |
14474 | } | |
14475 | ||
b4c291bb | 14476 | bpt->disposition = disposition; |
816338b5 | 14477 | bpt->enable_count = count; |
44702360 | 14478 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14479 | |
8d3788bd | 14480 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14481 | } |
14482 | ||
fe3f5fa8 | 14483 | |
c906108c | 14484 | void |
fba45db2 | 14485 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14486 | { |
816338b5 | 14487 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14488 | } |
14489 | ||
d0fe4701 XR |
14490 | /* The enable command enables the specified breakpoints/locations (or |
14491 | all defined breakpoints) so they once again become (or continue to | |
14492 | be) effective in stopping the inferior. ARGS may be in any of the | |
14493 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14494 | |
c906108c | 14495 | static void |
981a3fb3 | 14496 | enable_command (const char *args, int from_tty) |
c906108c | 14497 | { |
d0fe4701 | 14498 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14499 | } |
14500 | ||
c906108c | 14501 | static void |
4495129a | 14502 | enable_once_command (const char *args, int from_tty) |
c906108c | 14503 | { |
48649e1b TT |
14504 | map_breakpoint_numbers |
14505 | (args, [&] (breakpoint *b) | |
14506 | { | |
14507 | iterate_over_related_breakpoints | |
14508 | (b, [&] (breakpoint *bpt) | |
14509 | { | |
14510 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14511 | }); | |
14512 | }); | |
816338b5 SS |
14513 | } |
14514 | ||
14515 | static void | |
4495129a | 14516 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14517 | { |
b9d61307 SM |
14518 | int count; |
14519 | ||
14520 | if (args == NULL) | |
14521 | error_no_arg (_("hit count")); | |
14522 | ||
14523 | count = get_number (&args); | |
816338b5 | 14524 | |
48649e1b TT |
14525 | map_breakpoint_numbers |
14526 | (args, [&] (breakpoint *b) | |
14527 | { | |
14528 | iterate_over_related_breakpoints | |
14529 | (b, [&] (breakpoint *bpt) | |
14530 | { | |
14531 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14532 | }); | |
14533 | }); | |
c906108c SS |
14534 | } |
14535 | ||
c906108c | 14536 | static void |
4495129a | 14537 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14538 | { |
48649e1b TT |
14539 | map_breakpoint_numbers |
14540 | (args, [&] (breakpoint *b) | |
14541 | { | |
14542 | iterate_over_related_breakpoints | |
14543 | (b, [&] (breakpoint *bpt) | |
14544 | { | |
14545 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14546 | }); | |
14547 | }); | |
c906108c SS |
14548 | } |
14549 | \f | |
fa8d40ab | 14550 | static void |
981a3fb3 | 14551 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14552 | { |
14553 | } | |
14554 | ||
14555 | static void | |
981a3fb3 | 14556 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14557 | { |
14558 | } | |
14559 | ||
1f3b5d1b PP |
14560 | /* Invalidate last known value of any hardware watchpoint if |
14561 | the memory which that value represents has been written to by | |
14562 | GDB itself. */ | |
14563 | ||
14564 | static void | |
8de0566d YQ |
14565 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14566 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14567 | const bfd_byte *data) |
14568 | { | |
14569 | struct breakpoint *bp; | |
14570 | ||
14571 | ALL_BREAKPOINTS (bp) | |
14572 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14573 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14574 | { |
3a5c3e22 | 14575 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14576 | |
3a5c3e22 PA |
14577 | if (wp->val_valid && wp->val) |
14578 | { | |
14579 | struct bp_location *loc; | |
14580 | ||
14581 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14582 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14583 | && loc->address + loc->length > addr | |
14584 | && addr + len > loc->address) | |
14585 | { | |
14586 | value_free (wp->val); | |
14587 | wp->val = NULL; | |
14588 | wp->val_valid = 0; | |
14589 | } | |
14590 | } | |
1f3b5d1b PP |
14591 | } |
14592 | } | |
14593 | ||
8181d85f DJ |
14594 | /* Create and insert a breakpoint for software single step. */ |
14595 | ||
14596 | void | |
6c95b8df | 14597 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14598 | const address_space *aspace, |
4a64f543 | 14599 | CORE_ADDR next_pc) |
8181d85f | 14600 | { |
7c16b83e PA |
14601 | struct thread_info *tp = inferior_thread (); |
14602 | struct symtab_and_line sal; | |
14603 | CORE_ADDR pc = next_pc; | |
8181d85f | 14604 | |
34b7e8a6 PA |
14605 | if (tp->control.single_step_breakpoints == NULL) |
14606 | { | |
14607 | tp->control.single_step_breakpoints | |
5d5658a1 | 14608 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14609 | } |
8181d85f | 14610 | |
7c16b83e PA |
14611 | sal = find_pc_line (pc, 0); |
14612 | sal.pc = pc; | |
14613 | sal.section = find_pc_overlay (pc); | |
14614 | sal.explicit_pc = 1; | |
34b7e8a6 | 14615 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14616 | |
7c16b83e | 14617 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14618 | } |
14619 | ||
93f9a11f YQ |
14620 | /* Insert single step breakpoints according to the current state. */ |
14621 | ||
14622 | int | |
14623 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14624 | { | |
f5ea389a | 14625 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14626 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14627 | |
f5ea389a | 14628 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14629 | |
a0ff9e1a | 14630 | if (!next_pcs.empty ()) |
93f9a11f | 14631 | { |
f5ea389a | 14632 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14633 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14634 | |
a0ff9e1a | 14635 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14636 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14637 | ||
93f9a11f YQ |
14638 | return 1; |
14639 | } | |
14640 | else | |
14641 | return 0; | |
14642 | } | |
14643 | ||
34b7e8a6 | 14644 | /* See breakpoint.h. */ |
f02253f1 HZ |
14645 | |
14646 | int | |
7c16b83e | 14647 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14648 | const address_space *aspace, |
7c16b83e | 14649 | CORE_ADDR pc) |
1aafd4da | 14650 | { |
7c16b83e | 14651 | struct bp_location *loc; |
1aafd4da | 14652 | |
7c16b83e PA |
14653 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14654 | if (loc->inserted | |
14655 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14656 | return 1; | |
1aafd4da | 14657 | |
7c16b83e | 14658 | return 0; |
ef370185 JB |
14659 | } |
14660 | ||
14661 | /* Check whether a software single-step breakpoint is inserted at | |
14662 | PC. */ | |
14663 | ||
14664 | int | |
accd0bcd | 14665 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14666 | CORE_ADDR pc) |
14667 | { | |
34b7e8a6 PA |
14668 | struct breakpoint *bpt; |
14669 | ||
14670 | ALL_BREAKPOINTS (bpt) | |
14671 | { | |
14672 | if (bpt->type == bp_single_step | |
14673 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14674 | return 1; | |
14675 | } | |
14676 | return 0; | |
1aafd4da UW |
14677 | } |
14678 | ||
1042e4c0 SS |
14679 | /* Tracepoint-specific operations. */ |
14680 | ||
14681 | /* Set tracepoint count to NUM. */ | |
14682 | static void | |
14683 | set_tracepoint_count (int num) | |
14684 | { | |
14685 | tracepoint_count = num; | |
4fa62494 | 14686 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14687 | } |
14688 | ||
70221824 | 14689 | static void |
0b39b52e | 14690 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14691 | { |
55aa24fb | 14692 | struct breakpoint_ops *ops; |
55aa24fb | 14693 | |
ffc2605c TT |
14694 | event_location_up location = string_to_event_location (&arg, |
14695 | current_language); | |
5b56227b | 14696 | if (location != NULL |
ffc2605c | 14697 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14698 | ops = &tracepoint_probe_breakpoint_ops; |
14699 | else | |
14700 | ops = &tracepoint_breakpoint_ops; | |
14701 | ||
558a9d82 | 14702 | create_breakpoint (get_current_arch (), |
ffc2605c | 14703 | location.get (), |
f00aae0f | 14704 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14705 | 0 /* tempflag */, |
14706 | bp_tracepoint /* type_wanted */, | |
14707 | 0 /* Ignore count */, | |
14708 | pending_break_support, | |
14709 | ops, | |
14710 | from_tty, | |
14711 | 1 /* enabled */, | |
14712 | 0 /* internal */, 0); | |
1042e4c0 SS |
14713 | } |
14714 | ||
70221824 | 14715 | static void |
0b39b52e | 14716 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14717 | { |
ffc2605c TT |
14718 | event_location_up location = string_to_event_location (&arg, |
14719 | current_language); | |
558a9d82 | 14720 | create_breakpoint (get_current_arch (), |
ffc2605c | 14721 | location.get (), |
f00aae0f | 14722 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14723 | 0 /* tempflag */, |
14724 | bp_fast_tracepoint /* type_wanted */, | |
14725 | 0 /* Ignore count */, | |
14726 | pending_break_support, | |
14727 | &tracepoint_breakpoint_ops, | |
14728 | from_tty, | |
14729 | 1 /* enabled */, | |
14730 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14731 | } |
14732 | ||
14733 | /* strace command implementation. Creates a static tracepoint. */ | |
14734 | ||
70221824 | 14735 | static void |
0b39b52e | 14736 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14737 | { |
983af33b | 14738 | struct breakpoint_ops *ops; |
ffc2605c | 14739 | event_location_up location; |
983af33b SDJ |
14740 | |
14741 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14742 | or with a normal static tracepoint. */ | |
61012eef | 14743 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14744 | { |
14745 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14746 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14747 | } |
983af33b | 14748 | else |
f00aae0f KS |
14749 | { |
14750 | ops = &tracepoint_breakpoint_ops; | |
14751 | location = string_to_event_location (&arg, current_language); | |
14752 | } | |
983af33b | 14753 | |
558a9d82 | 14754 | create_breakpoint (get_current_arch (), |
ffc2605c | 14755 | location.get (), |
f00aae0f | 14756 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14757 | 0 /* tempflag */, |
14758 | bp_static_tracepoint /* type_wanted */, | |
14759 | 0 /* Ignore count */, | |
14760 | pending_break_support, | |
14761 | ops, | |
14762 | from_tty, | |
14763 | 1 /* enabled */, | |
14764 | 0 /* internal */, 0); | |
7a697b8d SS |
14765 | } |
14766 | ||
409873ef SS |
14767 | /* Set up a fake reader function that gets command lines from a linked |
14768 | list that was acquired during tracepoint uploading. */ | |
14769 | ||
14770 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14771 | static int next_cmd; |
409873ef SS |
14772 | |
14773 | static char * | |
14774 | read_uploaded_action (void) | |
14775 | { | |
14776 | char *rslt; | |
14777 | ||
3149d8c1 | 14778 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14779 | |
3149d8c1 | 14780 | next_cmd++; |
409873ef SS |
14781 | |
14782 | return rslt; | |
14783 | } | |
14784 | ||
00bf0b85 SS |
14785 | /* Given information about a tracepoint as recorded on a target (which |
14786 | can be either a live system or a trace file), attempt to create an | |
14787 | equivalent GDB tracepoint. This is not a reliable process, since | |
14788 | the target does not necessarily have all the information used when | |
14789 | the tracepoint was originally defined. */ | |
14790 | ||
d9b3f62e | 14791 | struct tracepoint * |
00bf0b85 | 14792 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14793 | { |
f2fc3015 TT |
14794 | const char *addr_str; |
14795 | char small_buf[100]; | |
d9b3f62e | 14796 | struct tracepoint *tp; |
fd9b8c24 | 14797 | |
409873ef SS |
14798 | if (utp->at_string) |
14799 | addr_str = utp->at_string; | |
14800 | else | |
14801 | { | |
14802 | /* In the absence of a source location, fall back to raw | |
14803 | address. Since there is no way to confirm that the address | |
14804 | means the same thing as when the trace was started, warn the | |
14805 | user. */ | |
3e43a32a MS |
14806 | warning (_("Uploaded tracepoint %d has no " |
14807 | "source location, using raw address"), | |
409873ef | 14808 | utp->number); |
8c042590 | 14809 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14810 | addr_str = small_buf; |
14811 | } | |
14812 | ||
14813 | /* There's not much we can do with a sequence of bytecodes. */ | |
14814 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14815 | warning (_("Uploaded tracepoint %d condition " |
14816 | "has no source form, ignoring it"), | |
409873ef | 14817 | utp->number); |
d5551862 | 14818 | |
ffc2605c TT |
14819 | event_location_up location = string_to_event_location (&addr_str, |
14820 | current_language); | |
8cdf0e15 | 14821 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14822 | location.get (), |
f00aae0f | 14823 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14824 | 0 /* parse cond/thread */, |
8cdf0e15 | 14825 | 0 /* tempflag */, |
0fb4aa4b | 14826 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14827 | 0 /* Ignore count */, |
14828 | pending_break_support, | |
348d480f | 14829 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14830 | 0 /* from_tty */, |
84f4c1fe | 14831 | utp->enabled /* enabled */, |
44f238bb PA |
14832 | 0 /* internal */, |
14833 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14834 | return NULL; |
fd9b8c24 | 14835 | |
409873ef | 14836 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14837 | tp = get_tracepoint (tracepoint_count); |
14838 | gdb_assert (tp != NULL); | |
d5551862 | 14839 | |
00bf0b85 SS |
14840 | if (utp->pass > 0) |
14841 | { | |
8c042590 | 14842 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14843 | tp->number); |
00bf0b85 | 14844 | |
409873ef | 14845 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14846 | } |
14847 | ||
409873ef SS |
14848 | /* If we have uploaded versions of the original commands, set up a |
14849 | special-purpose "reader" function and call the usual command line | |
14850 | reader, then pass the result to the breakpoint command-setting | |
14851 | function. */ | |
3149d8c1 | 14852 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14853 | { |
93921405 | 14854 | command_line_up cmd_list; |
00bf0b85 | 14855 | |
409873ef | 14856 | this_utp = utp; |
3149d8c1 | 14857 | next_cmd = 0; |
d5551862 | 14858 | |
409873ef SS |
14859 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14860 | ||
c1fc2657 | 14861 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14862 | } |
3149d8c1 SS |
14863 | else if (!VEC_empty (char_ptr, utp->actions) |
14864 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14865 | warning (_("Uploaded tracepoint %d actions " |
14866 | "have no source form, ignoring them"), | |
409873ef | 14867 | utp->number); |
00bf0b85 | 14868 | |
f196051f | 14869 | /* Copy any status information that might be available. */ |
c1fc2657 | 14870 | tp->hit_count = utp->hit_count; |
f196051f SS |
14871 | tp->traceframe_usage = utp->traceframe_usage; |
14872 | ||
00bf0b85 | 14873 | return tp; |
d9b3f62e | 14874 | } |
00bf0b85 | 14875 | |
1042e4c0 SS |
14876 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14877 | omitted. */ | |
14878 | ||
14879 | static void | |
1d12d88f | 14880 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14881 | { |
79a45e25 | 14882 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14883 | int num_printed; |
1042e4c0 | 14884 | |
e5a67952 | 14885 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14886 | |
14887 | if (num_printed == 0) | |
1042e4c0 | 14888 | { |
e5a67952 | 14889 | if (args == NULL || *args == '\0') |
112e8700 | 14890 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14891 | else |
112e8700 | 14892 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14893 | } |
ad443146 SS |
14894 | |
14895 | default_collect_info (); | |
1042e4c0 SS |
14896 | } |
14897 | ||
4a64f543 | 14898 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14899 | Not supported by all targets. */ |
14900 | static void | |
5fed81ff | 14901 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14902 | { |
14903 | enable_command (args, from_tty); | |
14904 | } | |
14905 | ||
4a64f543 | 14906 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14907 | Not supported by all targets. */ |
14908 | static void | |
5fed81ff | 14909 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14910 | { |
14911 | disable_command (args, from_tty); | |
14912 | } | |
14913 | ||
4a64f543 | 14914 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14915 | static void |
4495129a | 14916 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14917 | { |
35df4500 | 14918 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14919 | |
14920 | dont_repeat (); | |
14921 | ||
14922 | if (arg == 0) | |
14923 | { | |
14924 | int breaks_to_delete = 0; | |
14925 | ||
14926 | /* Delete all breakpoints if no argument. | |
14927 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14928 | have to be deleted with an explicit breakpoint number |
14929 | argument. */ | |
1042e4c0 | 14930 | ALL_TRACEPOINTS (b) |
46c6471b | 14931 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14932 | { |
14933 | breaks_to_delete = 1; | |
14934 | break; | |
14935 | } | |
1042e4c0 SS |
14936 | |
14937 | /* Ask user only if there are some breakpoints to delete. */ | |
14938 | if (!from_tty | |
14939 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14940 | { | |
35df4500 | 14941 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14942 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14943 | delete_breakpoint (b); |
1042e4c0 SS |
14944 | } |
14945 | } | |
14946 | else | |
48649e1b TT |
14947 | map_breakpoint_numbers |
14948 | (arg, [&] (breakpoint *b) | |
14949 | { | |
14950 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14951 | }); | |
1042e4c0 SS |
14952 | } |
14953 | ||
197f0a60 TT |
14954 | /* Helper function for trace_pass_command. */ |
14955 | ||
14956 | static void | |
d9b3f62e | 14957 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14958 | { |
d9b3f62e | 14959 | tp->pass_count = count; |
c1fc2657 | 14960 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
14961 | if (from_tty) |
14962 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14963 | tp->number, count); |
197f0a60 TT |
14964 | } |
14965 | ||
1042e4c0 SS |
14966 | /* Set passcount for tracepoint. |
14967 | ||
14968 | First command argument is passcount, second is tracepoint number. | |
14969 | If tracepoint number omitted, apply to most recently defined. | |
14970 | Also accepts special argument "all". */ | |
14971 | ||
14972 | static void | |
0b39b52e | 14973 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14974 | { |
d9b3f62e | 14975 | struct tracepoint *t1; |
0b39b52e | 14976 | ULONGEST count; |
1042e4c0 SS |
14977 | |
14978 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14979 | error (_("passcount command requires an " |
14980 | "argument (count + optional TP num)")); | |
1042e4c0 | 14981 | |
0b39b52e | 14982 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14983 | |
529480d0 | 14984 | args = skip_spaces (args); |
1042e4c0 SS |
14985 | if (*args && strncasecmp (args, "all", 3) == 0) |
14986 | { | |
d9b3f62e PA |
14987 | struct breakpoint *b; |
14988 | ||
1042e4c0 | 14989 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14990 | if (*args) |
14991 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14992 | |
d9b3f62e | 14993 | ALL_TRACEPOINTS (b) |
197f0a60 | 14994 | { |
d9b3f62e | 14995 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14996 | trace_pass_set_count (t1, count, from_tty); |
14997 | } | |
14998 | } | |
14999 | else if (*args == '\0') | |
1042e4c0 | 15000 | { |
5fa1d40e | 15001 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15002 | if (t1) |
197f0a60 TT |
15003 | trace_pass_set_count (t1, count, from_tty); |
15004 | } | |
15005 | else | |
15006 | { | |
bfd28288 PA |
15007 | number_or_range_parser parser (args); |
15008 | while (!parser.finished ()) | |
1042e4c0 | 15009 | { |
bfd28288 | 15010 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15011 | if (t1) |
15012 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15013 | } |
15014 | } | |
1042e4c0 SS |
15015 | } |
15016 | ||
d9b3f62e | 15017 | struct tracepoint * |
1042e4c0 SS |
15018 | get_tracepoint (int num) |
15019 | { | |
15020 | struct breakpoint *t; | |
15021 | ||
15022 | ALL_TRACEPOINTS (t) | |
15023 | if (t->number == num) | |
d9b3f62e | 15024 | return (struct tracepoint *) t; |
1042e4c0 SS |
15025 | |
15026 | return NULL; | |
15027 | } | |
15028 | ||
d5551862 SS |
15029 | /* Find the tracepoint with the given target-side number (which may be |
15030 | different from the tracepoint number after disconnecting and | |
15031 | reconnecting). */ | |
15032 | ||
d9b3f62e | 15033 | struct tracepoint * |
d5551862 SS |
15034 | get_tracepoint_by_number_on_target (int num) |
15035 | { | |
d9b3f62e | 15036 | struct breakpoint *b; |
d5551862 | 15037 | |
d9b3f62e PA |
15038 | ALL_TRACEPOINTS (b) |
15039 | { | |
15040 | struct tracepoint *t = (struct tracepoint *) b; | |
15041 | ||
15042 | if (t->number_on_target == num) | |
15043 | return t; | |
15044 | } | |
d5551862 SS |
15045 | |
15046 | return NULL; | |
15047 | } | |
15048 | ||
1042e4c0 | 15049 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15050 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15051 | If the argument is missing, the most recent tracepoint |
15052 | (tracepoint_count) is returned. */ | |
15053 | ||
d9b3f62e | 15054 | struct tracepoint * |
0b39b52e | 15055 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15056 | number_or_range_parser *parser) |
1042e4c0 | 15057 | { |
1042e4c0 SS |
15058 | struct breakpoint *t; |
15059 | int tpnum; | |
0b39b52e | 15060 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15061 | |
bfd28288 | 15062 | if (parser != NULL) |
197f0a60 | 15063 | { |
bfd28288 PA |
15064 | gdb_assert (!parser->finished ()); |
15065 | tpnum = parser->get_number (); | |
197f0a60 TT |
15066 | } |
15067 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15068 | tpnum = tracepoint_count; |
1042e4c0 | 15069 | else |
197f0a60 | 15070 | tpnum = get_number (arg); |
1042e4c0 SS |
15071 | |
15072 | if (tpnum <= 0) | |
15073 | { | |
15074 | if (instring && *instring) | |
15075 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15076 | instring); | |
15077 | else | |
5fa1d40e | 15078 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15079 | return NULL; |
15080 | } | |
15081 | ||
15082 | ALL_TRACEPOINTS (t) | |
15083 | if (t->number == tpnum) | |
15084 | { | |
d9b3f62e | 15085 | return (struct tracepoint *) t; |
1042e4c0 SS |
15086 | } |
15087 | ||
1042e4c0 SS |
15088 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15089 | return NULL; | |
15090 | } | |
15091 | ||
d9b3f62e PA |
15092 | void |
15093 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15094 | { | |
15095 | if (b->thread != -1) | |
15096 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15097 | ||
15098 | if (b->task != 0) | |
15099 | fprintf_unfiltered (fp, " task %d", b->task); | |
15100 | ||
15101 | fprintf_unfiltered (fp, "\n"); | |
15102 | } | |
15103 | ||
6149aea9 PA |
15104 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15105 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15106 | on each breakpoint and only include the ones for which it returns | |
15107 | non-zero. */ | |
15108 | ||
1042e4c0 | 15109 | static void |
4495129a | 15110 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15111 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15112 | { |
15113 | struct breakpoint *tp; | |
6149aea9 | 15114 | int any = 0; |
6149aea9 | 15115 | int extra_trace_bits = 0; |
1042e4c0 | 15116 | |
6149aea9 PA |
15117 | if (filename == 0 || *filename == 0) |
15118 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15119 | |
15120 | /* See if we have anything to save. */ | |
6149aea9 | 15121 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15122 | { |
6149aea9 | 15123 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15124 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15125 | continue; |
15126 | ||
15127 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15128 | if (filter && !filter (tp)) | |
15129 | continue; | |
15130 | ||
15131 | any = 1; | |
15132 | ||
15133 | if (is_tracepoint (tp)) | |
15134 | { | |
15135 | extra_trace_bits = 1; | |
15136 | ||
15137 | /* We can stop searching. */ | |
15138 | break; | |
15139 | } | |
1042e4c0 | 15140 | } |
6149aea9 PA |
15141 | |
15142 | if (!any) | |
1042e4c0 | 15143 | { |
6149aea9 | 15144 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15145 | return; |
15146 | } | |
15147 | ||
ee0c3293 | 15148 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15149 | |
15150 | stdio_file fp; | |
15151 | ||
ee0c3293 | 15152 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15153 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15154 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15155 | |
6149aea9 | 15156 | if (extra_trace_bits) |
d7e74731 | 15157 | save_trace_state_variables (&fp); |
8bf6485c | 15158 | |
6149aea9 | 15159 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15160 | { |
6149aea9 | 15161 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15162 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15163 | continue; |
8bf6485c | 15164 | |
6149aea9 PA |
15165 | /* If we have a filter, only save the breakpoints it accepts. */ |
15166 | if (filter && !filter (tp)) | |
15167 | continue; | |
15168 | ||
d7e74731 | 15169 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15170 | |
6149aea9 PA |
15171 | /* Note, we can't rely on tp->number for anything, as we can't |
15172 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15173 | instead. */ | |
15174 | ||
15175 | if (tp->cond_string) | |
d7e74731 | 15176 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15177 | |
15178 | if (tp->ignore_count) | |
d7e74731 | 15179 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15180 | |
2d9442cc | 15181 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15182 | { |
d7e74731 | 15183 | fp.puts (" commands\n"); |
a7bdde9e | 15184 | |
d7e74731 | 15185 | current_uiout->redirect (&fp); |
492d29ea | 15186 | TRY |
1042e4c0 | 15187 | { |
d1b0a7bf | 15188 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15189 | } |
492d29ea PA |
15190 | CATCH (ex, RETURN_MASK_ALL) |
15191 | { | |
112e8700 | 15192 | current_uiout->redirect (NULL); |
492d29ea PA |
15193 | throw_exception (ex); |
15194 | } | |
15195 | END_CATCH | |
1042e4c0 | 15196 | |
112e8700 | 15197 | current_uiout->redirect (NULL); |
d7e74731 | 15198 | fp.puts (" end\n"); |
1042e4c0 | 15199 | } |
6149aea9 PA |
15200 | |
15201 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15202 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15203 | |
15204 | /* If this is a multi-location breakpoint, check if the locations | |
15205 | should be individually disabled. Watchpoint locations are | |
15206 | special, and not user visible. */ | |
15207 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15208 | { | |
15209 | struct bp_location *loc; | |
15210 | int n = 1; | |
15211 | ||
15212 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15213 | if (!loc->enabled) | |
d7e74731 | 15214 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15215 | } |
1042e4c0 | 15216 | } |
8bf6485c | 15217 | |
6149aea9 | 15218 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15219 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15220 | |
1042e4c0 | 15221 | if (from_tty) |
ee0c3293 | 15222 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15223 | } |
15224 | ||
15225 | /* The `save breakpoints' command. */ | |
15226 | ||
15227 | static void | |
4495129a | 15228 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15229 | { |
15230 | save_breakpoints (args, from_tty, NULL); | |
15231 | } | |
15232 | ||
15233 | /* The `save tracepoints' command. */ | |
15234 | ||
15235 | static void | |
4495129a | 15236 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15237 | { |
15238 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15239 | } |
15240 | ||
15241 | /* Create a vector of all tracepoints. */ | |
15242 | ||
15243 | VEC(breakpoint_p) * | |
eeae04df | 15244 | all_tracepoints (void) |
1042e4c0 SS |
15245 | { |
15246 | VEC(breakpoint_p) *tp_vec = 0; | |
15247 | struct breakpoint *tp; | |
15248 | ||
15249 | ALL_TRACEPOINTS (tp) | |
15250 | { | |
15251 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15252 | } | |
15253 | ||
15254 | return tp_vec; | |
15255 | } | |
15256 | ||
c906108c | 15257 | \f |
629500fa KS |
15258 | /* This help string is used to consolidate all the help string for specifying |
15259 | locations used by several commands. */ | |
15260 | ||
15261 | #define LOCATION_HELP_STRING \ | |
15262 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15263 | source filename, function name, label name, and line number.\n\ | |
15264 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15265 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15266 | \"factorial.c:fact:the_top\".\n\ | |
15267 | \n\ | |
15268 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15269 | program. Example: To specify the fourth byte past the start function\n\ | |
15270 | \"main\", use \"*main + 4\".\n\ | |
15271 | \n\ | |
15272 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15273 | syntax to specify location parameters.\n\ | |
15274 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15275 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15276 | -function fact -label the_top\".\n\ |
15277 | \n\ | |
15278 | By default, a specified function is matched against the program's\n\ | |
15279 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15280 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15281 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15282 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15283 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15284 | |
4a64f543 MS |
15285 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15286 | commands. It is defined as a macro to prevent duplication. | |
15287 | COMMAND should be a string constant containing the name of the | |
15288 | command. */ | |
629500fa | 15289 | |
31e2b00f | 15290 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15291 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15292 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15293 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15294 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15295 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15296 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15297 | below.\n\ | |
15298 | \n\ | |
dc10affe PA |
15299 | With no LOCATION, uses current execution address of the selected\n\ |
15300 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15301 | \n\ |
15302 | THREADNUM is the number from \"info threads\".\n\ | |
15303 | CONDITION is a boolean expression.\n\ | |
629500fa | 15304 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15305 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15306 | conditions are different.\n\ | |
31e2b00f AS |
15307 | \n\ |
15308 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15309 | ||
44feb3ce TT |
15310 | /* List of subcommands for "catch". */ |
15311 | static struct cmd_list_element *catch_cmdlist; | |
15312 | ||
15313 | /* List of subcommands for "tcatch". */ | |
15314 | static struct cmd_list_element *tcatch_cmdlist; | |
15315 | ||
9ac4176b | 15316 | void |
a121b7c1 | 15317 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15318 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15319 | completer_ftype *completer, |
44feb3ce TT |
15320 | void *user_data_catch, |
15321 | void *user_data_tcatch) | |
15322 | { | |
15323 | struct cmd_list_element *command; | |
15324 | ||
0450cc4c | 15325 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15326 | &catch_cmdlist); |
15327 | set_cmd_sfunc (command, sfunc); | |
15328 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15329 | set_cmd_completer (command, completer); |
44feb3ce | 15330 | |
0450cc4c | 15331 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15332 | &tcatch_cmdlist); |
15333 | set_cmd_sfunc (command, sfunc); | |
15334 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15335 | set_cmd_completer (command, completer); |
44feb3ce TT |
15336 | } |
15337 | ||
6149aea9 | 15338 | static void |
981a3fb3 | 15339 | save_command (const char *arg, int from_tty) |
6149aea9 | 15340 | { |
3e43a32a MS |
15341 | printf_unfiltered (_("\"save\" must be followed by " |
15342 | "the name of a save subcommand.\n")); | |
635c7e8a | 15343 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15344 | } |
15345 | ||
84f4c1fe PM |
15346 | struct breakpoint * |
15347 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15348 | void *data) | |
15349 | { | |
35df4500 | 15350 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15351 | |
35df4500 | 15352 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15353 | { |
15354 | if ((*callback) (b, data)) | |
15355 | return b; | |
15356 | } | |
15357 | ||
15358 | return NULL; | |
15359 | } | |
15360 | ||
0574c78f GB |
15361 | /* Zero if any of the breakpoint's locations could be a location where |
15362 | functions have been inlined, nonzero otherwise. */ | |
15363 | ||
15364 | static int | |
15365 | is_non_inline_function (struct breakpoint *b) | |
15366 | { | |
15367 | /* The shared library event breakpoint is set on the address of a | |
15368 | non-inline function. */ | |
15369 | if (b->type == bp_shlib_event) | |
15370 | return 1; | |
15371 | ||
15372 | return 0; | |
15373 | } | |
15374 | ||
15375 | /* Nonzero if the specified PC cannot be a location where functions | |
15376 | have been inlined. */ | |
15377 | ||
15378 | int | |
accd0bcd | 15379 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15380 | const struct target_waitstatus *ws) |
0574c78f GB |
15381 | { |
15382 | struct breakpoint *b; | |
15383 | struct bp_location *bl; | |
15384 | ||
15385 | ALL_BREAKPOINTS (b) | |
15386 | { | |
15387 | if (!is_non_inline_function (b)) | |
15388 | continue; | |
15389 | ||
15390 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15391 | { | |
15392 | if (!bl->shlib_disabled | |
09ac7c10 | 15393 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15394 | return 1; |
15395 | } | |
15396 | } | |
15397 | ||
15398 | return 0; | |
15399 | } | |
15400 | ||
2f202fde JK |
15401 | /* Remove any references to OBJFILE which is going to be freed. */ |
15402 | ||
15403 | void | |
15404 | breakpoint_free_objfile (struct objfile *objfile) | |
15405 | { | |
15406 | struct bp_location **locp, *loc; | |
15407 | ||
15408 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15409 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15410 | loc->symtab = NULL; |
15411 | } | |
15412 | ||
2060206e PA |
15413 | void |
15414 | initialize_breakpoint_ops (void) | |
15415 | { | |
15416 | static int initialized = 0; | |
15417 | ||
15418 | struct breakpoint_ops *ops; | |
15419 | ||
15420 | if (initialized) | |
15421 | return; | |
15422 | initialized = 1; | |
15423 | ||
15424 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15425 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15426 | internal and momentary breakpoints, etc.). */ | |
15427 | ops = &bkpt_base_breakpoint_ops; | |
15428 | *ops = base_breakpoint_ops; | |
15429 | ops->re_set = bkpt_re_set; | |
15430 | ops->insert_location = bkpt_insert_location; | |
15431 | ops->remove_location = bkpt_remove_location; | |
15432 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15433 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15434 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15435 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15436 | |
15437 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15438 | ops = &bkpt_breakpoint_ops; | |
15439 | *ops = bkpt_base_breakpoint_ops; | |
15440 | ops->re_set = bkpt_re_set; | |
15441 | ops->resources_needed = bkpt_resources_needed; | |
15442 | ops->print_it = bkpt_print_it; | |
15443 | ops->print_mention = bkpt_print_mention; | |
15444 | ops->print_recreate = bkpt_print_recreate; | |
15445 | ||
15446 | /* Ranged breakpoints. */ | |
15447 | ops = &ranged_breakpoint_ops; | |
15448 | *ops = bkpt_breakpoint_ops; | |
15449 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15450 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15451 | ops->print_it = print_it_ranged_breakpoint; | |
15452 | ops->print_one = print_one_ranged_breakpoint; | |
15453 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15454 | ops->print_mention = print_mention_ranged_breakpoint; | |
15455 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15456 | ||
15457 | /* Internal breakpoints. */ | |
15458 | ops = &internal_breakpoint_ops; | |
15459 | *ops = bkpt_base_breakpoint_ops; | |
15460 | ops->re_set = internal_bkpt_re_set; | |
15461 | ops->check_status = internal_bkpt_check_status; | |
15462 | ops->print_it = internal_bkpt_print_it; | |
15463 | ops->print_mention = internal_bkpt_print_mention; | |
15464 | ||
15465 | /* Momentary breakpoints. */ | |
15466 | ops = &momentary_breakpoint_ops; | |
15467 | *ops = bkpt_base_breakpoint_ops; | |
15468 | ops->re_set = momentary_bkpt_re_set; | |
15469 | ops->check_status = momentary_bkpt_check_status; | |
15470 | ops->print_it = momentary_bkpt_print_it; | |
15471 | ops->print_mention = momentary_bkpt_print_mention; | |
15472 | ||
55aa24fb SDJ |
15473 | /* Probe breakpoints. */ |
15474 | ops = &bkpt_probe_breakpoint_ops; | |
15475 | *ops = bkpt_breakpoint_ops; | |
15476 | ops->insert_location = bkpt_probe_insert_location; | |
15477 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15478 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15479 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15480 | |
2060206e PA |
15481 | /* Watchpoints. */ |
15482 | ops = &watchpoint_breakpoint_ops; | |
15483 | *ops = base_breakpoint_ops; | |
15484 | ops->re_set = re_set_watchpoint; | |
15485 | ops->insert_location = insert_watchpoint; | |
15486 | ops->remove_location = remove_watchpoint; | |
15487 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15488 | ops->check_status = check_status_watchpoint; | |
15489 | ops->resources_needed = resources_needed_watchpoint; | |
15490 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15491 | ops->print_it = print_it_watchpoint; | |
15492 | ops->print_mention = print_mention_watchpoint; | |
15493 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15494 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15495 | |
15496 | /* Masked watchpoints. */ | |
15497 | ops = &masked_watchpoint_breakpoint_ops; | |
15498 | *ops = watchpoint_breakpoint_ops; | |
15499 | ops->insert_location = insert_masked_watchpoint; | |
15500 | ops->remove_location = remove_masked_watchpoint; | |
15501 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15502 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15503 | ops->print_it = print_it_masked_watchpoint; | |
15504 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15505 | ops->print_mention = print_mention_masked_watchpoint; | |
15506 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15507 | ||
15508 | /* Tracepoints. */ | |
15509 | ops = &tracepoint_breakpoint_ops; | |
15510 | *ops = base_breakpoint_ops; | |
15511 | ops->re_set = tracepoint_re_set; | |
15512 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15513 | ops->print_one_detail = tracepoint_print_one_detail; | |
15514 | ops->print_mention = tracepoint_print_mention; | |
15515 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15516 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15517 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15518 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15519 | |
55aa24fb SDJ |
15520 | /* Probe tracepoints. */ |
15521 | ops = &tracepoint_probe_breakpoint_ops; | |
15522 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15523 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15524 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15525 | |
983af33b SDJ |
15526 | /* Static tracepoints with marker (`-m'). */ |
15527 | ops = &strace_marker_breakpoint_ops; | |
15528 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15529 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15530 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15531 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15532 | |
15533 | /* Fork catchpoints. */ | |
15534 | ops = &catch_fork_breakpoint_ops; | |
15535 | *ops = base_breakpoint_ops; | |
15536 | ops->insert_location = insert_catch_fork; | |
15537 | ops->remove_location = remove_catch_fork; | |
15538 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15539 | ops->print_it = print_it_catch_fork; | |
15540 | ops->print_one = print_one_catch_fork; | |
15541 | ops->print_mention = print_mention_catch_fork; | |
15542 | ops->print_recreate = print_recreate_catch_fork; | |
15543 | ||
15544 | /* Vfork catchpoints. */ | |
15545 | ops = &catch_vfork_breakpoint_ops; | |
15546 | *ops = base_breakpoint_ops; | |
15547 | ops->insert_location = insert_catch_vfork; | |
15548 | ops->remove_location = remove_catch_vfork; | |
15549 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15550 | ops->print_it = print_it_catch_vfork; | |
15551 | ops->print_one = print_one_catch_vfork; | |
15552 | ops->print_mention = print_mention_catch_vfork; | |
15553 | ops->print_recreate = print_recreate_catch_vfork; | |
15554 | ||
15555 | /* Exec catchpoints. */ | |
15556 | ops = &catch_exec_breakpoint_ops; | |
15557 | *ops = base_breakpoint_ops; | |
2060206e PA |
15558 | ops->insert_location = insert_catch_exec; |
15559 | ops->remove_location = remove_catch_exec; | |
15560 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15561 | ops->print_it = print_it_catch_exec; | |
15562 | ops->print_one = print_one_catch_exec; | |
15563 | ops->print_mention = print_mention_catch_exec; | |
15564 | ops->print_recreate = print_recreate_catch_exec; | |
15565 | ||
edcc5120 TT |
15566 | /* Solib-related catchpoints. */ |
15567 | ops = &catch_solib_breakpoint_ops; | |
15568 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15569 | ops->insert_location = insert_catch_solib; |
15570 | ops->remove_location = remove_catch_solib; | |
15571 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15572 | ops->check_status = check_status_catch_solib; | |
15573 | ops->print_it = print_it_catch_solib; | |
15574 | ops->print_one = print_one_catch_solib; | |
15575 | ops->print_mention = print_mention_catch_solib; | |
15576 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15577 | |
15578 | ops = &dprintf_breakpoint_ops; | |
15579 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15580 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15581 | ops->resources_needed = bkpt_resources_needed; |
15582 | ops->print_it = bkpt_print_it; | |
15583 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15584 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15585 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15586 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15587 | } |
15588 | ||
8bfd80db YQ |
15589 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15590 | ||
15591 | static struct cmd_list_element *enablebreaklist = NULL; | |
15592 | ||
c906108c | 15593 | void |
fba45db2 | 15594 | _initialize_breakpoint (void) |
c906108c SS |
15595 | { |
15596 | struct cmd_list_element *c; | |
15597 | ||
2060206e PA |
15598 | initialize_breakpoint_ops (); |
15599 | ||
84acb35a | 15600 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15601 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15602 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15603 | |
55aa24fb | 15604 | breakpoint_objfile_key |
43dce439 | 15605 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15606 | |
c906108c SS |
15607 | breakpoint_chain = 0; |
15608 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15609 | before a breakpoint is set. */ | |
15610 | breakpoint_count = 0; | |
15611 | ||
1042e4c0 SS |
15612 | tracepoint_count = 0; |
15613 | ||
1bedd215 AC |
15614 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15615 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15616 | Usage is `ignore N COUNT'.")); | |
c906108c | 15617 | |
1bedd215 | 15618 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15619 | Set commands to be executed when the given breakpoints are hit.\n\ |
15620 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15621 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15622 | (e.g. `5-7').\n\ | |
c906108c SS |
15623 | With no argument, the targeted breakpoint is the last one set.\n\ |
15624 | The commands themselves follow starting on the next line.\n\ | |
15625 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15626 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15627 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15628 | |
d55637df | 15629 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15630 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15631 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15632 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15633 | set_cmd_completer (c, condition_completer); |
c906108c | 15634 | |
1bedd215 | 15635 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15636 | Set a temporary breakpoint.\n\ |
c906108c SS |
15637 | Like \"break\" except the breakpoint is only temporary,\n\ |
15638 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15639 | by using \"enable delete\" on the breakpoint number.\n\ |
15640 | \n" | |
15641 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15642 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15643 | |
1bedd215 | 15644 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15645 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15646 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15647 | some target hardware may not have this support.\n\ |
15648 | \n" | |
15649 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15650 | set_cmd_completer (c, location_completer); |
c906108c | 15651 | |
1bedd215 | 15652 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15653 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15654 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15655 | so it will be deleted when hit.\n\ |
15656 | \n" | |
15657 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15658 | set_cmd_completer (c, location_completer); |
c906108c | 15659 | |
1bedd215 AC |
15660 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15661 | Enable some breakpoints.\n\ | |
c906108c SS |
15662 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15663 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15664 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15665 | With a subcommand you can enable temporarily."), |
c906108c | 15666 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15667 | |
15668 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15669 | ||
84951ab5 | 15670 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15671 | Enable some breakpoints.\n\ |
c906108c SS |
15672 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15673 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15674 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15675 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15676 | |
1a966eab AC |
15677 | add_cmd ("once", no_class, enable_once_command, _("\ |
15678 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15679 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15680 | &enablebreaklist); |
15681 | ||
1a966eab AC |
15682 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15683 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15684 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15685 | &enablebreaklist); |
15686 | ||
816338b5 SS |
15687 | add_cmd ("count", no_class, enable_count_command, _("\ |
15688 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15689 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15690 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15691 | &enablebreaklist); | |
15692 | ||
1a966eab AC |
15693 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15694 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15695 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15696 | &enablelist); |
15697 | ||
1a966eab AC |
15698 | add_cmd ("once", no_class, enable_once_command, _("\ |
15699 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15700 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15701 | &enablelist); |
15702 | ||
15703 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15704 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15705 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15706 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15707 | &enablelist); |
15708 | ||
1bedd215 AC |
15709 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15710 | Disable some breakpoints.\n\ | |
c906108c SS |
15711 | Arguments are breakpoint numbers with spaces in between.\n\ |
15712 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15713 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15714 | &disablelist, "disable ", 1, &cmdlist); |
15715 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15716 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15717 | |
1a966eab AC |
15718 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15719 | Disable some breakpoints.\n\ | |
c906108c SS |
15720 | Arguments are breakpoint numbers with spaces in between.\n\ |
15721 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15722 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15723 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15724 | &disablelist); |
15725 | ||
1bedd215 AC |
15726 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15727 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15728 | Arguments are breakpoint numbers with spaces in between.\n\ |
15729 | To delete all breakpoints, give no argument.\n\ | |
15730 | \n\ | |
15731 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15732 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15733 | &deletelist, "delete ", 1, &cmdlist); |
15734 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15735 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15736 | |
1a966eab AC |
15737 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15738 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15739 | Arguments are breakpoint numbers with spaces in between.\n\ |
15740 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15741 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15742 | &deletelist); |
15743 | ||
1bedd215 | 15744 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15745 | Clear breakpoint at specified location.\n\ |
15746 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15747 | \n\ |
15748 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15749 | is executing in.\n" |
15750 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15751 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15752 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15753 | |
1bedd215 | 15754 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15755 | Set breakpoint at specified location.\n" |
31e2b00f | 15756 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15757 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15758 | |
c906108c SS |
15759 | add_com_alias ("b", "break", class_run, 1); |
15760 | add_com_alias ("br", "break", class_run, 1); | |
15761 | add_com_alias ("bre", "break", class_run, 1); | |
15762 | add_com_alias ("brea", "break", class_run, 1); | |
15763 | ||
c906108c SS |
15764 | if (dbx_commands) |
15765 | { | |
1bedd215 AC |
15766 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15767 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15768 | &stoplist, "stop ", 1, &cmdlist); |
15769 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15770 | _("Break in function or address."), &stoplist); |
c5aa993b | 15771 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15772 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15773 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15774 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15775 | The \"Type\" column indicates one of:\n\ |
15776 | \tbreakpoint - normal breakpoint\n\ | |
15777 | \twatchpoint - watchpoint\n\ | |
15778 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15779 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15780 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15781 | address and file/line number respectively.\n\ |
15782 | \n\ | |
15783 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15784 | are set to the address of the last breakpoint listed unless the command\n\ |
15785 | is prefixed with \"server \".\n\n\ | |
c906108c | 15786 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15787 | breakpoint set.")); |
c906108c SS |
15788 | } |
15789 | ||
11db9430 | 15790 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15791 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15792 | The \"Type\" column indicates one of:\n\ |
15793 | \tbreakpoint - normal breakpoint\n\ | |
15794 | \twatchpoint - watchpoint\n\ | |
15795 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15796 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15797 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15798 | address and file/line number respectively.\n\ |
15799 | \n\ | |
15800 | Convenience variable \"$_\" 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 \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15804 | breakpoint set.")); |
c906108c | 15805 | |
6b04bdb7 MS |
15806 | add_info_alias ("b", "breakpoints", 1); |
15807 | ||
1a966eab AC |
15808 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15809 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15810 | The \"Type\" column indicates one of:\n\ |
15811 | \tbreakpoint - normal breakpoint\n\ | |
15812 | \twatchpoint - watchpoint\n\ | |
15813 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15814 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15815 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15816 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15817 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15818 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15819 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15820 | address and file/line number respectively.\n\ |
15821 | \n\ | |
15822 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15823 | are set to the address of the last breakpoint listed unless the command\n\ |
15824 | is prefixed with \"server \".\n\n\ | |
c906108c | 15825 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15826 | breakpoint set."), |
c906108c SS |
15827 | &maintenanceinfolist); |
15828 | ||
44feb3ce TT |
15829 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15830 | Set catchpoints to catch events."), | |
15831 | &catch_cmdlist, "catch ", | |
15832 | 0/*allow-unknown*/, &cmdlist); | |
15833 | ||
15834 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15835 | Set temporary catchpoints to catch events."), | |
15836 | &tcatch_cmdlist, "tcatch ", | |
15837 | 0/*allow-unknown*/, &cmdlist); | |
15838 | ||
44feb3ce TT |
15839 | add_catch_command ("fork", _("Catch calls to fork."), |
15840 | catch_fork_command_1, | |
a96d9b2e | 15841 | NULL, |
44feb3ce TT |
15842 | (void *) (uintptr_t) catch_fork_permanent, |
15843 | (void *) (uintptr_t) catch_fork_temporary); | |
15844 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15845 | catch_fork_command_1, | |
a96d9b2e | 15846 | NULL, |
44feb3ce TT |
15847 | (void *) (uintptr_t) catch_vfork_permanent, |
15848 | (void *) (uintptr_t) catch_vfork_temporary); | |
15849 | add_catch_command ("exec", _("Catch calls to exec."), | |
15850 | catch_exec_command_1, | |
a96d9b2e SDJ |
15851 | NULL, |
15852 | CATCH_PERMANENT, | |
15853 | CATCH_TEMPORARY); | |
edcc5120 TT |
15854 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15855 | Usage: catch load [REGEX]\n\ | |
15856 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15857 | catch_load_command_1, | |
15858 | NULL, | |
15859 | CATCH_PERMANENT, | |
15860 | CATCH_TEMPORARY); | |
15861 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15862 | Usage: catch unload [REGEX]\n\ | |
15863 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15864 | catch_unload_command_1, | |
15865 | NULL, | |
15866 | CATCH_PERMANENT, | |
15867 | CATCH_TEMPORARY); | |
c5aa993b | 15868 | |
1bedd215 AC |
15869 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15870 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15871 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15872 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15873 | an expression changes.\n\ |
15874 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15875 | the memory to which it refers.")); | |
65d12d83 | 15876 | set_cmd_completer (c, expression_completer); |
c906108c | 15877 | |
1bedd215 AC |
15878 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15879 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15880 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15881 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15882 | an expression is read.\n\ |
15883 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15884 | the memory to which it refers.")); | |
65d12d83 | 15885 | set_cmd_completer (c, expression_completer); |
c906108c | 15886 | |
1bedd215 AC |
15887 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15888 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15889 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15890 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15891 | an expression is either read or written.\n\ |
15892 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15893 | the memory to which it refers.")); | |
65d12d83 | 15894 | set_cmd_completer (c, expression_completer); |
c906108c | 15895 | |
11db9430 | 15896 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15897 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15898 | |
920d2a44 AC |
15899 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15900 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15901 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15902 | &can_use_hw_watchpoints, _("\ | |
15903 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15904 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15905 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15906 | such is available. (However, any hardware watchpoints that were\n\ | |
15907 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15908 | hardware.)"), |
15909 | NULL, | |
920d2a44 | 15910 | show_can_use_hw_watchpoints, |
85c07804 | 15911 | &setlist, &showlist); |
c906108c SS |
15912 | |
15913 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15914 | |
1042e4c0 SS |
15915 | /* Tracepoint manipulation commands. */ |
15916 | ||
15917 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15918 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15919 | \n" |
15920 | BREAK_ARGS_HELP ("trace") "\n\ | |
15921 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15922 | set_cmd_completer (c, location_completer); | |
15923 | ||
15924 | add_com_alias ("tp", "trace", class_alias, 0); | |
15925 | add_com_alias ("tr", "trace", class_alias, 1); | |
15926 | add_com_alias ("tra", "trace", class_alias, 1); | |
15927 | add_com_alias ("trac", "trace", class_alias, 1); | |
15928 | ||
7a697b8d | 15929 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15930 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15931 | \n" |
15932 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15933 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15934 | set_cmd_completer (c, location_completer); | |
15935 | ||
0fb4aa4b | 15936 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15937 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15938 | \n\ |
15939 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15940 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15941 | or -m MARKER_ID.\n\n\ | |
15942 | If a marker id is specified, probe the marker with that name. With\n\ | |
15943 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15944 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15945 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15946 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15947 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15948 | \n\ | |
15949 | CONDITION is a boolean expression.\n\ | |
629500fa | 15950 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15951 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15952 | conditions are different.\n\ | |
0fb4aa4b PA |
15953 | \n\ |
15954 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15955 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15956 | set_cmd_completer (c, location_completer); | |
15957 | ||
11db9430 | 15958 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15959 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15960 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15961 | last tracepoint set.")); | |
15962 | ||
15963 | add_info_alias ("tp", "tracepoints", 1); | |
15964 | ||
15965 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15966 | Delete specified tracepoints.\n\ | |
15967 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15968 | No argument means delete all tracepoints."), | |
15969 | &deletelist); | |
7e20dfcd | 15970 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15971 | |
15972 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15973 | Disable specified tracepoints.\n\ | |
15974 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15975 | No argument means disable all tracepoints."), | |
15976 | &disablelist); | |
15977 | deprecate_cmd (c, "disable"); | |
15978 | ||
15979 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15980 | Enable specified tracepoints.\n\ | |
15981 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15982 | No argument means enable all tracepoints."), | |
15983 | &enablelist); | |
15984 | deprecate_cmd (c, "enable"); | |
15985 | ||
15986 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15987 | Set the passcount for a tracepoint.\n\ | |
15988 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15989 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15990 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15991 | ||
6149aea9 PA |
15992 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15993 | _("Save breakpoint definitions as a script."), | |
15994 | &save_cmdlist, "save ", | |
15995 | 0/*allow-unknown*/, &cmdlist); | |
15996 | ||
15997 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15998 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15999 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16000 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16001 | session to restore them."), | |
16002 | &save_cmdlist); | |
16003 | set_cmd_completer (c, filename_completer); | |
16004 | ||
16005 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16006 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16007 | Use the 'source' command in another debug session to restore them."), |
16008 | &save_cmdlist); | |
1042e4c0 SS |
16009 | set_cmd_completer (c, filename_completer); |
16010 | ||
6149aea9 PA |
16011 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16012 | deprecate_cmd (c, "save tracepoints"); | |
16013 | ||
1bedd215 | 16014 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16015 | Breakpoint specific settings\n\ |
16016 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16017 | pending breakpoint behavior"), |
fa8d40ab JJ |
16018 | &breakpoint_set_cmdlist, "set breakpoint ", |
16019 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16020 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16021 | Breakpoint specific settings\n\ |
16022 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16023 | pending breakpoint behavior"), |
fa8d40ab JJ |
16024 | &breakpoint_show_cmdlist, "show breakpoint ", |
16025 | 0/*allow-unknown*/, &showlist); | |
16026 | ||
7915a72c AC |
16027 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16028 | &pending_break_support, _("\ | |
16029 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16030 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16031 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16032 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16033 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16034 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16035 | NULL, |
920d2a44 | 16036 | show_pending_break_support, |
6e1d7d6c AC |
16037 | &breakpoint_set_cmdlist, |
16038 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16039 | |
16040 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16041 | |
16042 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16043 | &automatic_hardware_breakpoints, _("\ | |
16044 | Set automatic usage of hardware breakpoints."), _("\ | |
16045 | Show automatic usage of hardware breakpoints."), _("\ | |
16046 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16047 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16048 | a warning will be emitted for such breakpoints."), | |
16049 | NULL, | |
16050 | show_automatic_hardware_breakpoints, | |
16051 | &breakpoint_set_cmdlist, | |
16052 | &breakpoint_show_cmdlist); | |
74960c60 | 16053 | |
a25a5a45 PA |
16054 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16055 | &always_inserted_mode, _("\ | |
74960c60 VP |
16056 | Set mode for inserting breakpoints."), _("\ |
16057 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16058 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16059 | they're created, kept inserted even when execution stops, and removed\n\ | |
16060 | only when the user deletes them. When this mode is off (the default),\n\ | |
16061 | breakpoints are inserted only when execution continues, and removed\n\ | |
16062 | when execution stops."), | |
72d0e2c5 YQ |
16063 | NULL, |
16064 | &show_always_inserted_mode, | |
16065 | &breakpoint_set_cmdlist, | |
16066 | &breakpoint_show_cmdlist); | |
f1310107 | 16067 | |
b775012e LM |
16068 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16069 | condition_evaluation_enums, | |
16070 | &condition_evaluation_mode_1, _("\ | |
16071 | Set mode of breakpoint condition evaluation."), _("\ | |
16072 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16073 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16074 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16075 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16076 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16077 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16078 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16079 | be set to \"gdb\""), | |
16080 | &set_condition_evaluation_mode, | |
16081 | &show_condition_evaluation_mode, | |
16082 | &breakpoint_set_cmdlist, | |
16083 | &breakpoint_show_cmdlist); | |
16084 | ||
f1310107 TJB |
16085 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16086 | Set a breakpoint for an address range.\n\ | |
16087 | break-range START-LOCATION, END-LOCATION\n\ | |
16088 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16089 | LINENUM, for that line in the current file,\n\ | |
16090 | FILE:LINENUM, for that line in that file,\n\ | |
16091 | +OFFSET, for that number of lines after the current line\n\ | |
16092 | or the start of the range\n\ | |
16093 | FUNCTION, for the first line in that function,\n\ | |
16094 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16095 | *ADDRESS, for the instruction at that address.\n\ | |
16096 | \n\ | |
16097 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16098 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16099 | range (including START-LOCATION and END-LOCATION).")); | |
16100 | ||
e7e0cddf | 16101 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16102 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16103 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16104 | location may be a linespec, explicit, or address location.\n" |
16105 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16106 | set_cmd_completer (c, location_completer); |
16107 | ||
16108 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16109 | dprintf_style_enums, &dprintf_style, _("\ | |
16110 | Set the style of usage for dynamic printf."), _("\ | |
16111 | Show the style of usage for dynamic printf."), _("\ | |
16112 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16113 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16114 | console, as with the \"printf\" command.\n\ | |
16115 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16116 | program; by default printf(), but you can choose a different function or\n\ | |
16117 | output stream by setting dprintf-function and dprintf-channel."), | |
16118 | update_dprintf_commands, NULL, | |
16119 | &setlist, &showlist); | |
16120 | ||
16121 | dprintf_function = xstrdup ("printf"); | |
16122 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16123 | &dprintf_function, _("\ | |
16124 | Set the function to use for dynamic printf"), _("\ | |
16125 | Show the function to use for dynamic printf"), NULL, | |
16126 | update_dprintf_commands, NULL, | |
16127 | &setlist, &showlist); | |
16128 | ||
16129 | dprintf_channel = xstrdup (""); | |
16130 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16131 | &dprintf_channel, _("\ | |
16132 | Set the channel to use for dynamic printf"), _("\ | |
16133 | Show the channel to use for dynamic printf"), NULL, | |
16134 | update_dprintf_commands, NULL, | |
16135 | &setlist, &showlist); | |
16136 | ||
d3ce09f5 SS |
16137 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16138 | &disconnected_dprintf, _("\ | |
16139 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16140 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16141 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16142 | even if GDB disconnects or detaches from the target."), | |
16143 | NULL, | |
16144 | NULL, | |
16145 | &setlist, &showlist); | |
16146 | ||
16147 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16148 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16149 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16150 | ||
765dc015 | 16151 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16152 | |
16153 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16154 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16155 | } |