Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 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 | 51 | #include "solist.h" |
76727919 | 52 | #include "observable.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 | |
a6535de1 TT |
120 | static int can_use_hardware_watchpoint |
121 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 122 | |
a14ed312 | 123 | static void mention (struct breakpoint *); |
c906108c | 124 | |
348d480f PA |
125 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
126 | enum bptype, | |
c0a91b2b | 127 | const struct breakpoint_ops *); |
3742cc8b YQ |
128 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
129 | const struct symtab_and_line *); | |
130 | ||
4a64f543 MS |
131 | /* This function is used in gdbtk sources and thus can not be made |
132 | static. */ | |
63c252f8 | 133 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 134 | struct symtab_and_line, |
c0a91b2b TT |
135 | enum bptype, |
136 | const struct breakpoint_ops *); | |
c906108c | 137 | |
06edf0c0 PA |
138 | static struct breakpoint * |
139 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
140 | enum bptype type, | |
a1aa2221 LM |
141 | const struct breakpoint_ops *ops, |
142 | int loc_enabled); | |
06edf0c0 | 143 | |
76897487 KB |
144 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
145 | ||
a6d9a66e UW |
146 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
147 | CORE_ADDR bpaddr, | |
88f7da05 | 148 | enum bptype bptype); |
76897487 | 149 | |
6c95b8df PA |
150 | static void describe_other_breakpoints (struct gdbarch *, |
151 | struct program_space *, CORE_ADDR, | |
5af949e3 | 152 | struct obj_section *, int); |
c906108c | 153 | |
85d721b8 PA |
154 | static int watchpoint_locations_match (struct bp_location *loc1, |
155 | struct bp_location *loc2); | |
156 | ||
f1310107 | 157 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 158 | const struct address_space *aspace, |
f1310107 TJB |
159 | CORE_ADDR addr); |
160 | ||
d35ae833 | 161 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 162 | const address_space *, |
d35ae833 PA |
163 | CORE_ADDR, int); |
164 | ||
834c0d03 | 165 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 166 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 167 | |
e514a9d6 | 168 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 169 | |
a14ed312 | 170 | static int hw_breakpoint_used_count (void); |
c906108c | 171 | |
a1398e0c PA |
172 | static int hw_watchpoint_use_count (struct breakpoint *); |
173 | ||
174 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
175 | enum bptype type, | |
176 | int *other_type_used); | |
c906108c | 177 | |
816338b5 SS |
178 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
179 | int count); | |
c906108c | 180 | |
fe3f5fa8 | 181 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
182 | static void incref_bp_location (struct bp_location *loc); |
183 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 184 | |
39d61571 | 185 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 186 | |
44702360 PA |
187 | /* update_global_location_list's modes of operation wrt to whether to |
188 | insert locations now. */ | |
189 | enum ugll_insert_mode | |
190 | { | |
191 | /* Don't insert any breakpoint locations into the inferior, only | |
192 | remove already-inserted locations that no longer should be | |
193 | inserted. Functions that delete a breakpoint or breakpoints | |
194 | should specify this mode, so that deleting a breakpoint doesn't | |
195 | have the side effect of inserting the locations of other | |
196 | breakpoints that are marked not-inserted, but should_be_inserted | |
197 | returns true on them. | |
198 | ||
199 | This behavior is useful is situations close to tear-down -- e.g., | |
200 | after an exec, while the target still has execution, but | |
201 | breakpoint shadows of the previous executable image should *NOT* | |
202 | be restored to the new image; or before detaching, where the | |
203 | target still has execution and wants to delete breakpoints from | |
204 | GDB's lists, and all breakpoints had already been removed from | |
205 | the inferior. */ | |
206 | UGLL_DONT_INSERT, | |
207 | ||
a25a5a45 PA |
208 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
209 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
210 | UGLL_MAY_INSERT, |
211 | ||
a25a5a45 PA |
212 | /* Insert locations now, irrespective of |
213 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
214 | stopped right now, and the user did "continue". We need to | |
215 | insert breakpoints _before_ resuming the target, but | |
216 | UGLL_MAY_INSERT wouldn't insert them, because | |
217 | breakpoints_should_be_inserted_now returns false at that point, | |
218 | as no thread is running yet. */ | |
04086b45 | 219 | UGLL_INSERT |
44702360 PA |
220 | }; |
221 | ||
222 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 223 | |
44702360 | 224 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 225 | |
d77f58be | 226 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
227 | |
228 | static void insert_breakpoint_locations (void); | |
a5606eee | 229 | |
0b39b52e | 230 | static void trace_pass_command (const char *, int); |
1042e4c0 | 231 | |
558a9d82 YQ |
232 | static void set_tracepoint_count (int num); |
233 | ||
9c06b0b4 TJB |
234 | static int is_masked_watchpoint (const struct breakpoint *b); |
235 | ||
b775012e LM |
236 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
237 | ||
983af33b SDJ |
238 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
239 | otherwise. */ | |
240 | ||
241 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 242 | |
2060206e PA |
243 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
244 | that are implemented on top of software or hardware breakpoints | |
245 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
246 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
247 | ||
248 | /* Internal breakpoints class type. */ | |
06edf0c0 | 249 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
250 | |
251 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
252 | static struct breakpoint_ops momentary_breakpoint_ops; |
253 | ||
2060206e PA |
254 | /* The breakpoint_ops structure to be used in regular user created |
255 | breakpoints. */ | |
256 | struct breakpoint_ops bkpt_breakpoint_ops; | |
257 | ||
55aa24fb SDJ |
258 | /* Breakpoints set on probes. */ |
259 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
260 | ||
e7e0cddf | 261 | /* Dynamic printf class type. */ |
c5867ab6 | 262 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 263 | |
d3ce09f5 SS |
264 | /* The style in which to perform a dynamic printf. This is a user |
265 | option because different output options have different tradeoffs; | |
266 | if GDB does the printing, there is better error handling if there | |
267 | is a problem with any of the arguments, but using an inferior | |
268 | function lets you have special-purpose printers and sending of | |
269 | output to the same place as compiled-in print functions. */ | |
270 | ||
271 | static const char dprintf_style_gdb[] = "gdb"; | |
272 | static const char dprintf_style_call[] = "call"; | |
273 | static const char dprintf_style_agent[] = "agent"; | |
274 | static const char *const dprintf_style_enums[] = { | |
275 | dprintf_style_gdb, | |
276 | dprintf_style_call, | |
277 | dprintf_style_agent, | |
278 | NULL | |
279 | }; | |
280 | static const char *dprintf_style = dprintf_style_gdb; | |
281 | ||
282 | /* The function to use for dynamic printf if the preferred style is to | |
283 | call into the inferior. The value is simply a string that is | |
284 | copied into the command, so it can be anything that GDB can | |
285 | evaluate to a callable address, not necessarily a function name. */ | |
286 | ||
bde6261a | 287 | static char *dprintf_function; |
d3ce09f5 SS |
288 | |
289 | /* The channel to use for dynamic printf if the preferred style is to | |
290 | call into the inferior; if a nonempty string, it will be passed to | |
291 | the call as the first argument, with the format string as the | |
292 | second. As with the dprintf function, this can be anything that | |
293 | GDB knows how to evaluate, so in addition to common choices like | |
294 | "stderr", this could be an app-specific expression like | |
295 | "mystreams[curlogger]". */ | |
296 | ||
bde6261a | 297 | static char *dprintf_channel; |
d3ce09f5 SS |
298 | |
299 | /* True if dprintf commands should continue to operate even if GDB | |
300 | has disconnected. */ | |
301 | static int disconnected_dprintf = 1; | |
302 | ||
5cea2a26 PA |
303 | struct command_line * |
304 | breakpoint_commands (struct breakpoint *b) | |
305 | { | |
d1b0a7bf | 306 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 307 | } |
3daf8fe5 | 308 | |
f3b1572e PA |
309 | /* Flag indicating that a command has proceeded the inferior past the |
310 | current breakpoint. */ | |
311 | ||
312 | static int breakpoint_proceeded; | |
313 | ||
956a9fb9 | 314 | const char * |
2cec12e5 AR |
315 | bpdisp_text (enum bpdisp disp) |
316 | { | |
4a64f543 MS |
317 | /* NOTE: the following values are a part of MI protocol and |
318 | represent values of 'disp' field returned when inferior stops at | |
319 | a breakpoint. */ | |
bc043ef3 | 320 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 321 | |
2cec12e5 AR |
322 | return bpdisps[(int) disp]; |
323 | } | |
c906108c | 324 | |
4a64f543 | 325 | /* Prototypes for exported functions. */ |
c906108c | 326 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 327 | if such is available. */ |
c906108c SS |
328 | static int can_use_hw_watchpoints; |
329 | ||
920d2a44 AC |
330 | static void |
331 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
332 | struct cmd_list_element *c, | |
333 | const char *value) | |
334 | { | |
3e43a32a MS |
335 | fprintf_filtered (file, |
336 | _("Debugger's willingness to use " | |
337 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
338 | value); |
339 | } | |
340 | ||
fa8d40ab JJ |
341 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
342 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 343 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
344 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
345 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
346 | static void |
347 | show_pending_break_support (struct ui_file *file, int from_tty, | |
348 | struct cmd_list_element *c, | |
349 | const char *value) | |
350 | { | |
3e43a32a MS |
351 | fprintf_filtered (file, |
352 | _("Debugger's behavior regarding " | |
353 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
354 | value); |
355 | } | |
fa8d40ab | 356 | |
765dc015 | 357 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 358 | set with "break" but falling in read-only memory. |
765dc015 VP |
359 | If 0, gdb will warn about such breakpoints, but won't automatically |
360 | use hardware breakpoints. */ | |
361 | static int automatic_hardware_breakpoints; | |
362 | static void | |
363 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
364 | struct cmd_list_element *c, | |
365 | const char *value) | |
366 | { | |
3e43a32a MS |
367 | fprintf_filtered (file, |
368 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
369 | value); |
370 | } | |
371 | ||
a25a5a45 PA |
372 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
373 | stopped, and immediately inserts any new breakpoints as soon as | |
374 | they're created. If off (default), GDB keeps breakpoints off of | |
375 | the target as long as possible. That is, it delays inserting | |
376 | breakpoints until the next resume, and removes them again when the | |
377 | target fully stops. This is a bit safer in case GDB crashes while | |
378 | processing user input. */ | |
379 | static int always_inserted_mode = 0; | |
72d0e2c5 | 380 | |
33e5cbd6 | 381 | static void |
74960c60 | 382 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 383 | struct cmd_list_element *c, const char *value) |
74960c60 | 384 | { |
a25a5a45 PA |
385 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
386 | value); | |
74960c60 VP |
387 | } |
388 | ||
b57bacec PA |
389 | /* See breakpoint.h. */ |
390 | ||
33e5cbd6 | 391 | int |
a25a5a45 | 392 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 393 | { |
a25a5a45 PA |
394 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
395 | { | |
396 | /* If breakpoints are global, they should be inserted even if no | |
397 | thread under gdb's control is running, or even if there are | |
398 | no threads under GDB's control yet. */ | |
399 | return 1; | |
400 | } | |
401 | else if (target_has_execution) | |
402 | { | |
372316f1 PA |
403 | struct thread_info *tp; |
404 | ||
a25a5a45 PA |
405 | if (always_inserted_mode) |
406 | { | |
407 | /* The user wants breakpoints inserted even if all threads | |
408 | are stopped. */ | |
409 | return 1; | |
410 | } | |
411 | ||
b57bacec PA |
412 | if (threads_are_executing ()) |
413 | return 1; | |
372316f1 PA |
414 | |
415 | /* Don't remove breakpoints yet if, even though all threads are | |
416 | stopped, we still have events to process. */ | |
417 | ALL_NON_EXITED_THREADS (tp) | |
418 | if (tp->resumed | |
419 | && tp->suspend.waitstatus_pending_p) | |
420 | return 1; | |
a25a5a45 PA |
421 | } |
422 | return 0; | |
33e5cbd6 | 423 | } |
765dc015 | 424 | |
b775012e LM |
425 | static const char condition_evaluation_both[] = "host or target"; |
426 | ||
427 | /* Modes for breakpoint condition evaluation. */ | |
428 | static const char condition_evaluation_auto[] = "auto"; | |
429 | static const char condition_evaluation_host[] = "host"; | |
430 | static const char condition_evaluation_target[] = "target"; | |
431 | static const char *const condition_evaluation_enums[] = { | |
432 | condition_evaluation_auto, | |
433 | condition_evaluation_host, | |
434 | condition_evaluation_target, | |
435 | NULL | |
436 | }; | |
437 | ||
438 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
439 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
440 | ||
441 | /* Global that we use to display information to the user (gets its value from | |
442 | condition_evaluation_mode_1. */ | |
443 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
444 | ||
445 | /* Translate a condition evaluation mode MODE into either "host" | |
446 | or "target". This is used mostly to translate from "auto" to the | |
447 | real setting that is being used. It returns the translated | |
448 | evaluation mode. */ | |
449 | ||
450 | static const char * | |
451 | translate_condition_evaluation_mode (const char *mode) | |
452 | { | |
453 | if (mode == condition_evaluation_auto) | |
454 | { | |
455 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
456 | return condition_evaluation_target; | |
457 | else | |
458 | return condition_evaluation_host; | |
459 | } | |
460 | else | |
461 | return mode; | |
462 | } | |
463 | ||
464 | /* Discovers what condition_evaluation_auto translates to. */ | |
465 | ||
466 | static const char * | |
467 | breakpoint_condition_evaluation_mode (void) | |
468 | { | |
469 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
470 | } | |
471 | ||
472 | /* Return true if GDB should evaluate breakpoint conditions or false | |
473 | otherwise. */ | |
474 | ||
475 | static int | |
476 | gdb_evaluates_breakpoint_condition_p (void) | |
477 | { | |
478 | const char *mode = breakpoint_condition_evaluation_mode (); | |
479 | ||
480 | return (mode == condition_evaluation_host); | |
481 | } | |
482 | ||
c906108c SS |
483 | /* Are we executing breakpoint commands? */ |
484 | static int executing_breakpoint_commands; | |
485 | ||
c02f5703 MS |
486 | /* Are overlay event breakpoints enabled? */ |
487 | static int overlay_events_enabled; | |
488 | ||
e09342b5 TJB |
489 | /* See description in breakpoint.h. */ |
490 | int target_exact_watchpoints = 0; | |
491 | ||
c906108c | 492 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 493 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 494 | current breakpoint. */ |
c906108c | 495 | |
5c44784c | 496 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 497 | |
5c44784c JM |
498 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
499 | for (B = breakpoint_chain; \ | |
500 | B ? (TMP=B->next, 1): 0; \ | |
501 | B = TMP) | |
c906108c | 502 | |
4a64f543 MS |
503 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
504 | not provided so update_global_location_list must not be called | |
505 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 506 | |
876fa593 | 507 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
508 | for (BP_TMP = bp_locations; \ |
509 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 510 | BP_TMP++) |
7cc221ef | 511 | |
b775012e LM |
512 | /* Iterates through locations with address ADDRESS for the currently selected |
513 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
514 | to where the loop should start from. | |
515 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
516 | appropriate location to start with. */ | |
517 | ||
518 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
519 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
520 | BP_LOCP_TMP = BP_LOCP_START; \ | |
521 | BP_LOCP_START \ | |
f5336ca5 | 522 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
523 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
524 | BP_LOCP_TMP++) | |
525 | ||
1042e4c0 SS |
526 | /* Iterator for tracepoints only. */ |
527 | ||
528 | #define ALL_TRACEPOINTS(B) \ | |
529 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 530 | if (is_tracepoint (B)) |
1042e4c0 | 531 | |
7cc221ef | 532 | /* Chains of all breakpoints defined. */ |
c906108c SS |
533 | |
534 | struct breakpoint *breakpoint_chain; | |
535 | ||
f5336ca5 | 536 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 537 | |
f5336ca5 | 538 | static struct bp_location **bp_locations; |
876fa593 | 539 | |
f5336ca5 | 540 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 541 | |
f5336ca5 | 542 | static unsigned bp_locations_count; |
876fa593 | 543 | |
4a64f543 | 544 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 545 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 546 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 547 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 548 | an address you need to read. */ |
876fa593 | 549 | |
f5336ca5 | 550 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 551 | |
4a64f543 MS |
552 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
553 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
554 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
555 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 556 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 557 | |
f5336ca5 | 558 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 559 | |
4a64f543 | 560 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
561 | from the bp_locations array, but for which a hit may still be |
562 | reported by a target. */ | |
20874c92 VP |
563 | VEC(bp_location_p) *moribund_locations = NULL; |
564 | ||
c906108c SS |
565 | /* Number of last breakpoint made. */ |
566 | ||
95a42b64 TT |
567 | static int breakpoint_count; |
568 | ||
86b17b60 PA |
569 | /* The value of `breakpoint_count' before the last command that |
570 | created breakpoints. If the last (break-like) command created more | |
571 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
572 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
573 | static int prev_breakpoint_count; | |
c906108c | 574 | |
1042e4c0 SS |
575 | /* Number of last tracepoint made. */ |
576 | ||
95a42b64 | 577 | static int tracepoint_count; |
1042e4c0 | 578 | |
6149aea9 PA |
579 | static struct cmd_list_element *breakpoint_set_cmdlist; |
580 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 581 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 582 | |
badd37ce SDJ |
583 | /* See declaration at breakpoint.h. */ |
584 | ||
585 | struct breakpoint * | |
586 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
587 | void *user_data) | |
588 | { | |
589 | struct breakpoint *b = NULL; | |
590 | ||
591 | ALL_BREAKPOINTS (b) | |
592 | { | |
593 | if (func (b, user_data) != 0) | |
594 | break; | |
595 | } | |
596 | ||
597 | return b; | |
598 | } | |
599 | ||
468d015d JJ |
600 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
601 | static int | |
602 | breakpoint_enabled (struct breakpoint *b) | |
603 | { | |
0d381245 | 604 | return (b->enable_state == bp_enabled); |
468d015d JJ |
605 | } |
606 | ||
c906108c SS |
607 | /* Set breakpoint count to NUM. */ |
608 | ||
95a42b64 | 609 | static void |
fba45db2 | 610 | set_breakpoint_count (int num) |
c906108c | 611 | { |
86b17b60 | 612 | prev_breakpoint_count = breakpoint_count; |
c906108c | 613 | breakpoint_count = num; |
4fa62494 | 614 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
615 | } |
616 | ||
86b17b60 PA |
617 | /* Used by `start_rbreak_breakpoints' below, to record the current |
618 | breakpoint count before "rbreak" creates any breakpoint. */ | |
619 | static int rbreak_start_breakpoint_count; | |
620 | ||
95a42b64 TT |
621 | /* Called at the start an "rbreak" command to record the first |
622 | breakpoint made. */ | |
86b17b60 | 623 | |
c80049d3 | 624 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 625 | { |
86b17b60 | 626 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
627 | } |
628 | ||
629 | /* Called at the end of an "rbreak" command to record the last | |
630 | breakpoint made. */ | |
86b17b60 | 631 | |
c80049d3 | 632 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 633 | { |
86b17b60 | 634 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
635 | } |
636 | ||
4a64f543 | 637 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
638 | |
639 | void | |
fba45db2 | 640 | clear_breakpoint_hit_counts (void) |
c906108c SS |
641 | { |
642 | struct breakpoint *b; | |
643 | ||
644 | ALL_BREAKPOINTS (b) | |
645 | b->hit_count = 0; | |
646 | } | |
647 | ||
c906108c | 648 | \f |
48cb2d85 VP |
649 | /* Return the breakpoint with the specified number, or NULL |
650 | if the number does not refer to an existing breakpoint. */ | |
651 | ||
652 | struct breakpoint * | |
653 | get_breakpoint (int num) | |
654 | { | |
655 | struct breakpoint *b; | |
656 | ||
657 | ALL_BREAKPOINTS (b) | |
658 | if (b->number == num) | |
659 | return b; | |
660 | ||
661 | return NULL; | |
662 | } | |
5c44784c | 663 | |
c906108c | 664 | \f |
adc36818 | 665 | |
b775012e LM |
666 | /* Mark locations as "conditions have changed" in case the target supports |
667 | evaluating conditions on its side. */ | |
668 | ||
669 | static void | |
670 | mark_breakpoint_modified (struct breakpoint *b) | |
671 | { | |
672 | struct bp_location *loc; | |
673 | ||
674 | /* This is only meaningful if the target is | |
675 | evaluating conditions and if the user has | |
676 | opted for condition evaluation on the target's | |
677 | side. */ | |
678 | if (gdb_evaluates_breakpoint_condition_p () | |
679 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
680 | return; | |
681 | ||
682 | if (!is_breakpoint (b)) | |
683 | return; | |
684 | ||
685 | for (loc = b->loc; loc; loc = loc->next) | |
686 | loc->condition_changed = condition_modified; | |
687 | } | |
688 | ||
689 | /* Mark location as "conditions have changed" in case the target supports | |
690 | evaluating conditions on its side. */ | |
691 | ||
692 | static void | |
693 | mark_breakpoint_location_modified (struct bp_location *loc) | |
694 | { | |
695 | /* This is only meaningful if the target is | |
696 | evaluating conditions and if the user has | |
697 | opted for condition evaluation on the target's | |
698 | side. */ | |
699 | if (gdb_evaluates_breakpoint_condition_p () | |
700 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
701 | ||
702 | return; | |
703 | ||
704 | if (!is_breakpoint (loc->owner)) | |
705 | return; | |
706 | ||
707 | loc->condition_changed = condition_modified; | |
708 | } | |
709 | ||
710 | /* Sets the condition-evaluation mode using the static global | |
711 | condition_evaluation_mode. */ | |
712 | ||
713 | static void | |
eb4c3f4a | 714 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
715 | struct cmd_list_element *c) |
716 | { | |
b775012e LM |
717 | const char *old_mode, *new_mode; |
718 | ||
719 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
720 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
721 | { | |
722 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
723 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
724 | "Using host evaluation mode instead.")); | |
725 | return; | |
726 | } | |
727 | ||
728 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
729 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
730 | ||
abf1152a JK |
731 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
732 | settings was "auto". */ | |
733 | condition_evaluation_mode = condition_evaluation_mode_1; | |
734 | ||
b775012e LM |
735 | /* Only update the mode if the user picked a different one. */ |
736 | if (new_mode != old_mode) | |
737 | { | |
738 | struct bp_location *loc, **loc_tmp; | |
739 | /* If the user switched to a different evaluation mode, we | |
740 | need to synch the changes with the target as follows: | |
741 | ||
742 | "host" -> "target": Send all (valid) conditions to the target. | |
743 | "target" -> "host": Remove all the conditions from the target. | |
744 | */ | |
745 | ||
b775012e LM |
746 | if (new_mode == condition_evaluation_target) |
747 | { | |
748 | /* Mark everything modified and synch conditions with the | |
749 | target. */ | |
750 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
751 | mark_breakpoint_location_modified (loc); | |
752 | } | |
753 | else | |
754 | { | |
755 | /* Manually mark non-duplicate locations to synch conditions | |
756 | with the target. We do this to remove all the conditions the | |
757 | target knows about. */ | |
758 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
759 | if (is_breakpoint (loc->owner) && loc->inserted) | |
760 | loc->needs_update = 1; | |
761 | } | |
762 | ||
763 | /* Do the update. */ | |
44702360 | 764 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
765 | } |
766 | ||
767 | return; | |
768 | } | |
769 | ||
770 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
771 | what "auto" is translating to. */ | |
772 | ||
773 | static void | |
774 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
775 | struct cmd_list_element *c, const char *value) | |
776 | { | |
777 | if (condition_evaluation_mode == condition_evaluation_auto) | |
778 | fprintf_filtered (file, | |
779 | _("Breakpoint condition evaluation " | |
780 | "mode is %s (currently %s).\n"), | |
781 | value, | |
782 | breakpoint_condition_evaluation_mode ()); | |
783 | else | |
784 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
785 | value); | |
786 | } | |
787 | ||
788 | /* A comparison function for bp_location AP and BP that is used by | |
789 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 790 | the more general bp_locations_compare function. */ |
b775012e LM |
791 | |
792 | static int | |
f5336ca5 | 793 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 794 | { |
9a3c8263 SM |
795 | const struct bp_location *a = *(const struct bp_location **) ap; |
796 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
797 | |
798 | if (a->address == b->address) | |
799 | return 0; | |
800 | else | |
801 | return ((a->address > b->address) - (a->address < b->address)); | |
802 | } | |
803 | ||
804 | /* Helper function to skip all bp_locations with addresses | |
805 | less than ADDRESS. It returns the first bp_location that | |
806 | is greater than or equal to ADDRESS. If none is found, just | |
807 | return NULL. */ | |
808 | ||
809 | static struct bp_location ** | |
810 | get_first_locp_gte_addr (CORE_ADDR address) | |
811 | { | |
812 | struct bp_location dummy_loc; | |
813 | struct bp_location *dummy_locp = &dummy_loc; | |
814 | struct bp_location **locp_found = NULL; | |
815 | ||
816 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
817 | dummy_loc.address = address; |
818 | ||
819 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 820 | locp_found = ((struct bp_location **) |
f5336ca5 | 821 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 822 | sizeof (struct bp_location **), |
f5336ca5 | 823 | bp_locations_compare_addrs)); |
b775012e LM |
824 | |
825 | /* Nothing was found, nothing left to do. */ | |
826 | if (locp_found == NULL) | |
827 | return NULL; | |
828 | ||
829 | /* We may have found a location that is at ADDRESS but is not the first in the | |
830 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 831 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
832 | && (*(locp_found - 1))->address == address) |
833 | locp_found--; | |
834 | ||
835 | return locp_found; | |
836 | } | |
837 | ||
adc36818 | 838 | void |
7a26bd4d | 839 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
840 | int from_tty) |
841 | { | |
3a5c3e22 PA |
842 | xfree (b->cond_string); |
843 | b->cond_string = NULL; | |
adc36818 | 844 | |
3a5c3e22 | 845 | if (is_watchpoint (b)) |
adc36818 | 846 | { |
3a5c3e22 PA |
847 | struct watchpoint *w = (struct watchpoint *) b; |
848 | ||
4d01a485 | 849 | w->cond_exp.reset (); |
3a5c3e22 PA |
850 | } |
851 | else | |
852 | { | |
853 | struct bp_location *loc; | |
854 | ||
855 | for (loc = b->loc; loc; loc = loc->next) | |
856 | { | |
4d01a485 | 857 | loc->cond.reset (); |
b775012e LM |
858 | |
859 | /* No need to free the condition agent expression | |
860 | bytecode (if we have one). We will handle this | |
861 | when we go through update_global_location_list. */ | |
3a5c3e22 | 862 | } |
adc36818 | 863 | } |
adc36818 PM |
864 | |
865 | if (*exp == 0) | |
866 | { | |
867 | if (from_tty) | |
868 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
869 | } | |
870 | else | |
871 | { | |
bbc13ae3 | 872 | const char *arg = exp; |
cc59ec59 | 873 | |
adc36818 PM |
874 | /* I don't know if it matters whether this is the string the user |
875 | typed in or the decompiled expression. */ | |
876 | b->cond_string = xstrdup (arg); | |
877 | b->condition_not_parsed = 0; | |
878 | ||
879 | if (is_watchpoint (b)) | |
880 | { | |
3a5c3e22 PA |
881 | struct watchpoint *w = (struct watchpoint *) b; |
882 | ||
aee1fcdf | 883 | innermost_block.reset (); |
adc36818 | 884 | arg = exp; |
1bb9788d | 885 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
886 | if (*arg) |
887 | error (_("Junk at end of expression")); | |
aee1fcdf | 888 | w->cond_exp_valid_block = innermost_block.block (); |
adc36818 PM |
889 | } |
890 | else | |
891 | { | |
3a5c3e22 PA |
892 | struct bp_location *loc; |
893 | ||
adc36818 PM |
894 | for (loc = b->loc; loc; loc = loc->next) |
895 | { | |
896 | arg = exp; | |
897 | loc->cond = | |
1bb9788d TT |
898 | parse_exp_1 (&arg, loc->address, |
899 | block_for_pc (loc->address), 0); | |
adc36818 PM |
900 | if (*arg) |
901 | error (_("Junk at end of expression")); | |
902 | } | |
903 | } | |
904 | } | |
b775012e LM |
905 | mark_breakpoint_modified (b); |
906 | ||
76727919 | 907 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
908 | } |
909 | ||
d55637df TT |
910 | /* Completion for the "condition" command. */ |
911 | ||
eb3ff9a5 | 912 | static void |
6f937416 | 913 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 914 | completion_tracker &tracker, |
6f937416 | 915 | const char *text, const char *word) |
d55637df | 916 | { |
6f937416 | 917 | const char *space; |
d55637df | 918 | |
f1735a53 TT |
919 | text = skip_spaces (text); |
920 | space = skip_to_space (text); | |
d55637df TT |
921 | if (*space == '\0') |
922 | { | |
923 | int len; | |
924 | struct breakpoint *b; | |
d55637df TT |
925 | |
926 | if (text[0] == '$') | |
927 | { | |
928 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
929 | if (!isdigit (text[1])) |
930 | complete_internalvar (tracker, &text[1]); | |
931 | return; | |
d55637df TT |
932 | } |
933 | ||
934 | /* We're completing the breakpoint number. */ | |
935 | len = strlen (text); | |
936 | ||
937 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
938 | { |
939 | char number[50]; | |
940 | ||
941 | xsnprintf (number, sizeof (number), "%d", b->number); | |
942 | ||
943 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
944 | { |
945 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
946 | tracker.add_completion (std::move (copy)); | |
947 | } | |
58ce7251 | 948 | } |
d55637df | 949 | |
eb3ff9a5 | 950 | return; |
d55637df TT |
951 | } |
952 | ||
953 | /* We're completing the expression part. */ | |
f1735a53 | 954 | text = skip_spaces (space); |
eb3ff9a5 | 955 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
956 | } |
957 | ||
c906108c SS |
958 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
959 | ||
960 | static void | |
0b39b52e | 961 | condition_command (const char *arg, int from_tty) |
c906108c | 962 | { |
52f0bd74 | 963 | struct breakpoint *b; |
0b39b52e | 964 | const char *p; |
52f0bd74 | 965 | int bnum; |
c906108c SS |
966 | |
967 | if (arg == 0) | |
e2e0b3e5 | 968 | error_no_arg (_("breakpoint number")); |
c906108c SS |
969 | |
970 | p = arg; | |
971 | bnum = get_number (&p); | |
5c44784c | 972 | if (bnum == 0) |
8a3fe4f8 | 973 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
974 | |
975 | ALL_BREAKPOINTS (b) | |
976 | if (b->number == bnum) | |
2f069f6f | 977 | { |
6dddc817 DE |
978 | /* Check if this breakpoint has a "stop" method implemented in an |
979 | extension language. This method and conditions entered into GDB | |
980 | from the CLI are mutually exclusive. */ | |
981 | const struct extension_language_defn *extlang | |
982 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
983 | ||
984 | if (extlang != NULL) | |
985 | { | |
986 | error (_("Only one stop condition allowed. There is currently" | |
987 | " a %s stop condition defined for this breakpoint."), | |
988 | ext_lang_capitalized_name (extlang)); | |
989 | } | |
2566ad2d | 990 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
991 | |
992 | if (is_breakpoint (b)) | |
44702360 | 993 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 994 | |
2f069f6f JB |
995 | return; |
996 | } | |
c906108c | 997 | |
8a3fe4f8 | 998 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
999 | } |
1000 | ||
a7bdde9e VP |
1001 | /* Check that COMMAND do not contain commands that are suitable |
1002 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1003 | Throw if any such commands is found. */ |
1004 | ||
a7bdde9e VP |
1005 | static void |
1006 | check_no_tracepoint_commands (struct command_line *commands) | |
1007 | { | |
1008 | struct command_line *c; | |
cc59ec59 | 1009 | |
a7bdde9e VP |
1010 | for (c = commands; c; c = c->next) |
1011 | { | |
1012 | int i; | |
1013 | ||
1014 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1015 | error (_("The 'while-stepping' command can " |
1016 | "only be used for tracepoints")); | |
a7bdde9e VP |
1017 | |
1018 | for (i = 0; i < c->body_count; ++i) | |
1019 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1020 | ||
1021 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1022 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1023 | command directly. */ |
1024 | if (strstr (c->line, "collect ") == c->line) | |
1025 | error (_("The 'collect' command can only be used for tracepoints")); | |
1026 | ||
51661e93 VP |
1027 | if (strstr (c->line, "teval ") == c->line) |
1028 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1029 | } |
1030 | } | |
1031 | ||
c1fc2657 | 1032 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1033 | { |
c1fc2657 | 1034 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1035 | }; |
1036 | ||
d77f58be SS |
1037 | /* Encapsulate tests for different types of tracepoints. */ |
1038 | ||
3b0871f4 SM |
1039 | static bool |
1040 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1041 | { |
1042 | return (type == bp_tracepoint | |
1043 | || type == bp_fast_tracepoint | |
1044 | || type == bp_static_tracepoint); | |
1045 | } | |
1046 | ||
3b0871f4 SM |
1047 | static bool |
1048 | is_longjmp_type (bptype type) | |
1049 | { | |
1050 | return type == bp_longjmp || type == bp_exception; | |
1051 | } | |
1052 | ||
a7bdde9e | 1053 | int |
d77f58be | 1054 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1055 | { |
d9b3f62e | 1056 | return is_tracepoint_type (b->type); |
a7bdde9e | 1057 | } |
d9b3f62e | 1058 | |
a5e364af SM |
1059 | /* Factory function to create an appropriate instance of breakpoint given |
1060 | TYPE. */ | |
1061 | ||
1062 | static std::unique_ptr<breakpoint> | |
1063 | new_breakpoint_from_type (bptype type) | |
1064 | { | |
1065 | breakpoint *b; | |
1066 | ||
1067 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1068 | b = new tracepoint (); |
3b0871f4 | 1069 | else if (is_longjmp_type (type)) |
c1fc2657 | 1070 | b = new longjmp_breakpoint (); |
a5e364af SM |
1071 | else |
1072 | b = new breakpoint (); | |
1073 | ||
1074 | return std::unique_ptr<breakpoint> (b); | |
1075 | } | |
1076 | ||
e5dd4106 | 1077 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1078 | breakpoint. This function will throw an exception if a problem is |
1079 | found. */ | |
48cb2d85 | 1080 | |
95a42b64 TT |
1081 | static void |
1082 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1083 | struct command_line *commands) | |
48cb2d85 | 1084 | { |
d77f58be | 1085 | if (is_tracepoint (b)) |
a7bdde9e | 1086 | { |
c9a6ce02 | 1087 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1088 | struct command_line *c; |
1089 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1090 | |
1091 | /* Reset the while-stepping step count. The previous commands | |
1092 | might have included a while-stepping action, while the new | |
1093 | ones might not. */ | |
1094 | t->step_count = 0; | |
1095 | ||
1096 | /* We need to verify that each top-level element of commands is | |
1097 | valid for tracepoints, that there's at most one | |
1098 | while-stepping element, and that the while-stepping's body | |
1099 | has valid tracing commands excluding nested while-stepping. | |
1100 | We also need to validate the tracepoint action line in the | |
1101 | context of the tracepoint --- validate_actionline actually | |
1102 | has side effects, like setting the tracepoint's | |
1103 | while-stepping STEP_COUNT, in addition to checking if the | |
1104 | collect/teval actions parse and make sense in the | |
1105 | tracepoint's context. */ | |
a7bdde9e VP |
1106 | for (c = commands; c; c = c->next) |
1107 | { | |
a7bdde9e VP |
1108 | if (c->control_type == while_stepping_control) |
1109 | { | |
1110 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1111 | error (_("The 'while-stepping' command " |
1112 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1113 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1114 | error (_("The 'while-stepping' command " |
1115 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1116 | |
1117 | if (while_stepping) | |
3e43a32a MS |
1118 | error (_("The 'while-stepping' command " |
1119 | "can be used only once")); | |
a7bdde9e VP |
1120 | else |
1121 | while_stepping = c; | |
1122 | } | |
c9a6ce02 PA |
1123 | |
1124 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1125 | } |
1126 | if (while_stepping) | |
1127 | { | |
1128 | struct command_line *c2; | |
1129 | ||
1130 | gdb_assert (while_stepping->body_count == 1); | |
1131 | c2 = while_stepping->body_list[0]; | |
1132 | for (; c2; c2 = c2->next) | |
1133 | { | |
a7bdde9e VP |
1134 | if (c2->control_type == while_stepping_control) |
1135 | error (_("The 'while-stepping' command cannot be nested")); | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | check_no_tracepoint_commands (commands); | |
1142 | } | |
95a42b64 TT |
1143 | } |
1144 | ||
0fb4aa4b PA |
1145 | /* Return a vector of all the static tracepoints set at ADDR. The |
1146 | caller is responsible for releasing the vector. */ | |
1147 | ||
1148 | VEC(breakpoint_p) * | |
1149 | static_tracepoints_here (CORE_ADDR addr) | |
1150 | { | |
1151 | struct breakpoint *b; | |
1152 | VEC(breakpoint_p) *found = 0; | |
1153 | struct bp_location *loc; | |
1154 | ||
1155 | ALL_BREAKPOINTS (b) | |
1156 | if (b->type == bp_static_tracepoint) | |
1157 | { | |
1158 | for (loc = b->loc; loc; loc = loc->next) | |
1159 | if (loc->address == addr) | |
1160 | VEC_safe_push(breakpoint_p, found, b); | |
1161 | } | |
1162 | ||
1163 | return found; | |
1164 | } | |
1165 | ||
95a42b64 | 1166 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1167 | validate that only allowed commands are included. */ |
95a42b64 TT |
1168 | |
1169 | void | |
4a64f543 | 1170 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1171 | command_line_up &&commands) |
95a42b64 | 1172 | { |
93921405 | 1173 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1174 | |
d1b0a7bf | 1175 | b->commands = std::move (commands); |
76727919 | 1176 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1177 | } |
1178 | ||
45a43567 TT |
1179 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1180 | is not the same as the "silent" that may appear in the breakpoint's | |
1181 | commands. */ | |
1182 | ||
1183 | void | |
1184 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1185 | { | |
1186 | int old_silent = b->silent; | |
1187 | ||
1188 | b->silent = silent; | |
1189 | if (old_silent != silent) | |
76727919 | 1190 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1191 | } |
1192 | ||
1193 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1194 | breakpoint work for any thread. */ | |
1195 | ||
1196 | void | |
1197 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1198 | { | |
1199 | int old_thread = b->thread; | |
1200 | ||
1201 | b->thread = thread; | |
1202 | if (old_thread != thread) | |
76727919 | 1203 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1204 | } |
1205 | ||
1206 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1207 | breakpoint work for any task. */ | |
1208 | ||
1209 | void | |
1210 | breakpoint_set_task (struct breakpoint *b, int task) | |
1211 | { | |
1212 | int old_task = b->task; | |
1213 | ||
1214 | b->task = task; | |
1215 | if (old_task != task) | |
76727919 | 1216 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1217 | } |
1218 | ||
95a42b64 TT |
1219 | void |
1220 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1221 | { |
9a3c8263 | 1222 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1223 | |
6f937416 | 1224 | validate_actionline (line, b); |
a7bdde9e VP |
1225 | } |
1226 | ||
95a42b64 | 1227 | static void |
896b6bda | 1228 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1229 | struct command_line *control) |
95a42b64 | 1230 | { |
d1b0a7bf | 1231 | counted_command_line cmd; |
95a42b64 | 1232 | |
896b6bda PA |
1233 | std::string new_arg; |
1234 | ||
95a42b64 TT |
1235 | if (arg == NULL || !*arg) |
1236 | { | |
86b17b60 | 1237 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1238 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1239 | breakpoint_count); | |
95a42b64 | 1240 | else if (breakpoint_count > 0) |
896b6bda | 1241 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1242 | arg = new_arg.c_str (); |
1243 | } | |
1244 | ||
1245 | map_breakpoint_numbers | |
1246 | (arg, [&] (breakpoint *b) | |
1247 | { | |
1248 | if (cmd == NULL) | |
1249 | { | |
48649e1b | 1250 | if (control != NULL) |
d1b0a7bf | 1251 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1252 | else |
1253 | { | |
81b1e71c TT |
1254 | std::string str |
1255 | = string_printf (_("Type commands for breakpoint(s) " | |
1256 | "%s, one per line."), | |
1257 | arg); | |
48649e1b | 1258 | |
81b1e71c | 1259 | cmd = read_command_lines (&str[0], |
d1b0a7bf TT |
1260 | from_tty, 1, |
1261 | (is_tracepoint (b) | |
1262 | ? check_tracepoint_command : 0), | |
1263 | b); | |
48649e1b | 1264 | } |
48649e1b TT |
1265 | } |
1266 | ||
1267 | /* If a breakpoint was on the list more than once, we don't need to | |
1268 | do anything. */ | |
1269 | if (b->commands != cmd) | |
1270 | { | |
d1b0a7bf | 1271 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1272 | b->commands = cmd; |
76727919 | 1273 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1274 | } |
1275 | }); | |
95a42b64 TT |
1276 | } |
1277 | ||
1278 | static void | |
0b39b52e | 1279 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1280 | { |
1281 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1282 | } |
40c03ae8 EZ |
1283 | |
1284 | /* Like commands_command, but instead of reading the commands from | |
1285 | input stream, takes them from an already parsed command structure. | |
1286 | ||
1287 | This is used by cli-script.c to DTRT with breakpoint commands | |
1288 | that are part of if and while bodies. */ | |
1289 | enum command_control_type | |
896b6bda | 1290 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1291 | { |
95a42b64 TT |
1292 | commands_command_1 (arg, 0, cmd); |
1293 | return simple_control; | |
40c03ae8 | 1294 | } |
876fa593 JK |
1295 | |
1296 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1297 | ||
1298 | static int | |
1299 | bp_location_has_shadow (struct bp_location *bl) | |
1300 | { | |
1301 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1302 | return 0; | |
1303 | if (!bl->inserted) | |
1304 | return 0; | |
1305 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1306 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1307 | return 0; |
1308 | return 1; | |
1309 | } | |
1310 | ||
9d497a19 PA |
1311 | /* Update BUF, which is LEN bytes read from the target address |
1312 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1313 | contents. | |
1314 | ||
1315 | If READBUF is not NULL, this buffer must not overlap with the of | |
1316 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1317 | failed assertion internal error will be raised. */ | |
1318 | ||
1319 | static void | |
1320 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1321 | const gdb_byte *writebuf_org, | |
1322 | ULONGEST memaddr, LONGEST len, | |
1323 | struct bp_target_info *target_info, | |
1324 | struct gdbarch *gdbarch) | |
1325 | { | |
1326 | /* Now do full processing of the found relevant range of elements. */ | |
1327 | CORE_ADDR bp_addr = 0; | |
1328 | int bp_size = 0; | |
1329 | int bptoffset = 0; | |
1330 | ||
1331 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1332 | current_program_space->aspace, 0)) | |
1333 | { | |
1334 | /* The breakpoint is inserted in a different address space. */ | |
1335 | return; | |
1336 | } | |
1337 | ||
1338 | /* Addresses and length of the part of the breakpoint that | |
1339 | we need to copy. */ | |
1340 | bp_addr = target_info->placed_address; | |
1341 | bp_size = target_info->shadow_len; | |
1342 | ||
1343 | if (bp_addr + bp_size <= memaddr) | |
1344 | { | |
1345 | /* The breakpoint is entirely before the chunk of memory we are | |
1346 | reading. */ | |
1347 | return; | |
1348 | } | |
1349 | ||
1350 | if (bp_addr >= memaddr + len) | |
1351 | { | |
1352 | /* The breakpoint is entirely after the chunk of memory we are | |
1353 | reading. */ | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | /* Offset within shadow_contents. */ | |
1358 | if (bp_addr < memaddr) | |
1359 | { | |
1360 | /* Only copy the second part of the breakpoint. */ | |
1361 | bp_size -= memaddr - bp_addr; | |
1362 | bptoffset = memaddr - bp_addr; | |
1363 | bp_addr = memaddr; | |
1364 | } | |
1365 | ||
1366 | if (bp_addr + bp_size > memaddr + len) | |
1367 | { | |
1368 | /* Only copy the first part of the breakpoint. */ | |
1369 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1370 | } | |
1371 | ||
1372 | if (readbuf != NULL) | |
1373 | { | |
1374 | /* Verify that the readbuf buffer does not overlap with the | |
1375 | shadow_contents buffer. */ | |
1376 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1377 | || readbuf >= (target_info->shadow_contents | |
1378 | + target_info->shadow_len)); | |
1379 | ||
1380 | /* Update the read buffer with this inserted breakpoint's | |
1381 | shadow. */ | |
1382 | memcpy (readbuf + bp_addr - memaddr, | |
1383 | target_info->shadow_contents + bptoffset, bp_size); | |
1384 | } | |
1385 | else | |
1386 | { | |
1387 | const unsigned char *bp; | |
0d5ed153 MR |
1388 | CORE_ADDR addr = target_info->reqstd_address; |
1389 | int placed_size; | |
9d497a19 PA |
1390 | |
1391 | /* Update the shadow with what we want to write to memory. */ | |
1392 | memcpy (target_info->shadow_contents + bptoffset, | |
1393 | writebuf_org + bp_addr - memaddr, bp_size); | |
1394 | ||
1395 | /* Determine appropriate breakpoint contents and size for this | |
1396 | address. */ | |
0d5ed153 | 1397 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1398 | |
1399 | /* Update the final write buffer with this inserted | |
1400 | breakpoint's INSN. */ | |
1401 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1402 | } | |
1403 | } | |
1404 | ||
8defab1a | 1405 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1406 | by replacing any memory breakpoints with their shadowed contents. |
1407 | ||
35c63cd8 JB |
1408 | If READBUF is not NULL, this buffer must not overlap with any of |
1409 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1410 | a failed assertion internal error will be raised. | |
1411 | ||
876fa593 | 1412 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1413 | bl->address - bp_locations_placed_address_before_address_max |
1414 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1415 | The range we were requested to resolve shadows for is: |
1416 | memaddr ... memaddr + len | |
1417 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1418 | memaddr + len <= (bl->address |
f5336ca5 | 1419 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1420 | and: |
f5336ca5 | 1421 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1422 | |
8defab1a | 1423 | void |
f0ba3972 PA |
1424 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1425 | const gdb_byte *writebuf_org, | |
1426 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1427 | { |
4a64f543 MS |
1428 | /* Left boundary, right boundary and median element of our binary |
1429 | search. */ | |
876fa593 JK |
1430 | unsigned bc_l, bc_r, bc; |
1431 | ||
4a64f543 MS |
1432 | /* Find BC_L which is a leftmost element which may affect BUF |
1433 | content. It is safe to report lower value but a failure to | |
1434 | report higher one. */ | |
876fa593 JK |
1435 | |
1436 | bc_l = 0; | |
f5336ca5 | 1437 | bc_r = bp_locations_count; |
876fa593 JK |
1438 | while (bc_l + 1 < bc_r) |
1439 | { | |
35df4500 | 1440 | struct bp_location *bl; |
876fa593 JK |
1441 | |
1442 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1443 | bl = bp_locations[bc]; |
876fa593 | 1444 | |
4a64f543 MS |
1445 | /* Check first BL->ADDRESS will not overflow due to the added |
1446 | constant. Then advance the left boundary only if we are sure | |
1447 | the BC element can in no way affect the BUF content (MEMADDR | |
1448 | to MEMADDR + LEN range). | |
876fa593 | 1449 | |
f5336ca5 | 1450 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1451 | offset so that we cannot miss a breakpoint with its shadow |
1452 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1453 | |
f5336ca5 | 1454 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1455 | >= bl->address) |
f5336ca5 | 1456 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1457 | <= memaddr)) |
876fa593 JK |
1458 | bc_l = bc; |
1459 | else | |
1460 | bc_r = bc; | |
1461 | } | |
1462 | ||
128070bb PA |
1463 | /* Due to the binary search above, we need to make sure we pick the |
1464 | first location that's at BC_L's address. E.g., if there are | |
1465 | multiple locations at the same address, BC_L may end up pointing | |
1466 | at a duplicate location, and miss the "master"/"inserted" | |
1467 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1468 | B: | |
1469 | ||
1470 | L1@A, L2@A, L3@B, ... | |
1471 | ||
1472 | BC_L could end up pointing at location L2, while the "master" | |
1473 | location could be L1. Since the `loc->inserted' flag is only set | |
1474 | on "master" locations, we'd forget to restore the shadow of L1 | |
1475 | and L2. */ | |
1476 | while (bc_l > 0 | |
f5336ca5 | 1477 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1478 | bc_l--; |
1479 | ||
876fa593 JK |
1480 | /* Now do full processing of the found relevant range of elements. */ |
1481 | ||
f5336ca5 | 1482 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1483 | { |
f5336ca5 | 1484 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1485 | |
35df4500 TJB |
1486 | /* bp_location array has BL->OWNER always non-NULL. */ |
1487 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1488 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1489 | bl->owner->number); |
ffce0d52 | 1490 | |
e5dd4106 | 1491 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1492 | content. */ |
1493 | ||
f5336ca5 PA |
1494 | if (bl->address >= bp_locations_placed_address_before_address_max |
1495 | && memaddr + len <= (bl->address | |
1496 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1497 | break; |
1498 | ||
35df4500 | 1499 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1500 | continue; |
6c95b8df | 1501 | |
9d497a19 PA |
1502 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1503 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1504 | } | |
c906108c | 1505 | } |
9d497a19 | 1506 | |
c906108c | 1507 | \f |
c5aa993b | 1508 | |
b775012e LM |
1509 | /* Return true if BPT is either a software breakpoint or a hardware |
1510 | breakpoint. */ | |
1511 | ||
1512 | int | |
1513 | is_breakpoint (const struct breakpoint *bpt) | |
1514 | { | |
1515 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1516 | || bpt->type == bp_hardware_breakpoint |
1517 | || bpt->type == bp_dprintf); | |
b775012e LM |
1518 | } |
1519 | ||
60e1c644 PA |
1520 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1521 | ||
a5606eee | 1522 | static int |
d77f58be | 1523 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1524 | { |
1525 | return (bpt->type == bp_hardware_watchpoint | |
1526 | || bpt->type == bp_read_watchpoint | |
1527 | || bpt->type == bp_access_watchpoint); | |
1528 | } | |
7270d8f2 | 1529 | |
60e1c644 PA |
1530 | /* Return true if BPT is of any watchpoint kind, hardware or |
1531 | software. */ | |
1532 | ||
3a5c3e22 | 1533 | int |
d77f58be | 1534 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1535 | { |
1536 | return (is_hardware_watchpoint (bpt) | |
1537 | || bpt->type == bp_watchpoint); | |
1538 | } | |
1539 | ||
3a5c3e22 PA |
1540 | /* Returns true if the current thread and its running state are safe |
1541 | to evaluate or update watchpoint B. Watchpoints on local | |
1542 | expressions need to be evaluated in the context of the thread that | |
1543 | was current when the watchpoint was created, and, that thread needs | |
1544 | to be stopped to be able to select the correct frame context. | |
1545 | Watchpoints on global expressions can be evaluated on any thread, | |
1546 | and in any state. It is presently left to the target allowing | |
1547 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1548 | |
1549 | static int | |
3a5c3e22 | 1550 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1551 | { |
c1fc2657 | 1552 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1553 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1554 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1555 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1556 | } |
1557 | ||
d0fb5eae JK |
1558 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1559 | associated bp_watchpoint_scope breakpoint. */ | |
1560 | ||
1561 | static void | |
3a5c3e22 | 1562 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1563 | { |
c1fc2657 | 1564 | if (w->related_breakpoint != w) |
d0fb5eae | 1565 | { |
c1fc2657 SM |
1566 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1567 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1568 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1569 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1570 | w->related_breakpoint = w; | |
d0fb5eae | 1571 | } |
c1fc2657 | 1572 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1573 | } |
1574 | ||
bb9d5f81 PP |
1575 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1576 | watchpoint W. */ | |
1577 | ||
1578 | static struct value * | |
1579 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1580 | { | |
1581 | struct value *bit_val; | |
1582 | ||
1583 | if (val == NULL) | |
1584 | return NULL; | |
1585 | ||
1586 | bit_val = allocate_value (value_type (val)); | |
1587 | ||
1588 | unpack_value_bitfield (bit_val, | |
1589 | w->val_bitpos, | |
1590 | w->val_bitsize, | |
1591 | value_contents_for_printing (val), | |
1592 | value_offset (val), | |
1593 | val); | |
1594 | ||
1595 | return bit_val; | |
1596 | } | |
1597 | ||
c6d81124 PA |
1598 | /* Allocate a dummy location and add it to B, which must be a software |
1599 | watchpoint. This is required because even if a software watchpoint | |
1600 | is not watching any memory, bpstat_stop_status requires a location | |
1601 | to be able to report stops. */ | |
1602 | ||
1603 | static void | |
1604 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1605 | struct program_space *pspace) | |
1606 | { | |
1607 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1608 | ||
1609 | b->loc = allocate_bp_location (b); | |
1610 | b->loc->pspace = pspace; | |
1611 | b->loc->address = -1; | |
1612 | b->loc->length = -1; | |
1613 | } | |
1614 | ||
1615 | /* Returns true if B is a software watchpoint that is not watching any | |
1616 | memory (e.g., "watch $pc"). */ | |
1617 | ||
1618 | static int | |
1619 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1620 | { | |
1621 | return (b->type == bp_watchpoint | |
1622 | && b->loc != NULL | |
1623 | && b->loc->next == NULL | |
1624 | && b->loc->address == -1 | |
1625 | && b->loc->length == -1); | |
1626 | } | |
1627 | ||
567e1b4e JB |
1628 | /* Assuming that B is a watchpoint: |
1629 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1630 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1631 | - Evaluate the condition if there is one, and store the result |
1632 | in b->loc->cond. | |
a5606eee VP |
1633 | - Update the list of values that must be watched in B->loc. |
1634 | ||
4a64f543 MS |
1635 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1636 | nothing. If this is local watchpoint that is out of scope, delete | |
1637 | it. | |
1638 | ||
1639 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1640 | removed + inserted on each stop here. Normal breakpoints must | |
1641 | never be removed because they might be missed by a running thread | |
1642 | when debugging in non-stop mode. On the other hand, hardware | |
1643 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1644 | to each LWP since they are stored in each LWP's hardware debug | |
1645 | registers. Therefore, such LWP must be stopped first in order to | |
1646 | be able to modify its hardware watchpoints. | |
1647 | ||
1648 | Hardware watchpoints must be reset exactly once after being | |
1649 | presented to the user. It cannot be done sooner, because it would | |
1650 | reset the data used to present the watchpoint hit to the user. And | |
1651 | it must not be done later because it could display the same single | |
1652 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1653 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1654 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1655 | not user-visible - its hit is suppressed if the memory content has | |
1656 | not changed. | |
1657 | ||
1658 | The following constraints influence the location where we can reset | |
1659 | hardware watchpoints: | |
1660 | ||
1661 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1662 | called several times when GDB stops. | |
1663 | ||
1664 | [linux] | |
1665 | * Multiple hardware watchpoints can be hit at the same time, | |
1666 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1667 | hit at a time as the reason for stopping, and all the other hits | |
1668 | are presented later, one after the other, each time the user | |
1669 | requests the execution to be resumed. Execution is not resumed | |
1670 | for the threads still having pending hit event stored in | |
1671 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1672 | the inferior on the first stop the thread hit event is kept being | |
1673 | reported from its cached value by linux_nat_stopped_data_address | |
1674 | until the real thread resume happens after the watchpoint gets | |
1675 | presented and thus its LWP_INFO->STATUS gets reset. | |
1676 | ||
1677 | Therefore the hardware watchpoint hit can get safely reset on the | |
1678 | watchpoint removal from inferior. */ | |
a79d3c27 | 1679 | |
b40ce68a | 1680 | static void |
3a5c3e22 | 1681 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1682 | { |
a5606eee | 1683 | int within_current_scope; |
a5606eee | 1684 | struct frame_id saved_frame_id; |
66076460 | 1685 | int frame_saved; |
a5606eee | 1686 | |
f6bc2008 PA |
1687 | /* If this is a local watchpoint, we only want to check if the |
1688 | watchpoint frame is in scope if the current thread is the thread | |
1689 | that was used to create the watchpoint. */ | |
1690 | if (!watchpoint_in_thread_scope (b)) | |
1691 | return; | |
1692 | ||
c1fc2657 | 1693 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1694 | return; |
1695 | ||
66076460 | 1696 | frame_saved = 0; |
a5606eee VP |
1697 | |
1698 | /* Determine if the watchpoint is within scope. */ | |
1699 | if (b->exp_valid_block == NULL) | |
1700 | within_current_scope = 1; | |
1701 | else | |
1702 | { | |
b5db5dfc UW |
1703 | struct frame_info *fi = get_current_frame (); |
1704 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1705 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1706 | ||
c9cf6e20 MG |
1707 | /* If we're at a point where the stack has been destroyed |
1708 | (e.g. in a function epilogue), unwinding may not work | |
1709 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1710 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1711 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1712 | return; |
66076460 DJ |
1713 | |
1714 | /* Save the current frame's ID so we can restore it after | |
1715 | evaluating the watchpoint expression on its own frame. */ | |
1716 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1717 | took a frame parameter, so that we didn't have to change the | |
1718 | selected frame. */ | |
1719 | frame_saved = 1; | |
1720 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1721 | ||
a5606eee VP |
1722 | fi = frame_find_by_id (b->watchpoint_frame); |
1723 | within_current_scope = (fi != NULL); | |
1724 | if (within_current_scope) | |
1725 | select_frame (fi); | |
1726 | } | |
1727 | ||
b5db5dfc UW |
1728 | /* We don't free locations. They are stored in the bp_location array |
1729 | and update_global_location_list will eventually delete them and | |
1730 | remove breakpoints if needed. */ | |
c1fc2657 | 1731 | b->loc = NULL; |
b5db5dfc | 1732 | |
a5606eee VP |
1733 | if (within_current_scope && reparse) |
1734 | { | |
bbc13ae3 | 1735 | const char *s; |
d63d0675 | 1736 | |
4d01a485 | 1737 | b->exp.reset (); |
d63d0675 | 1738 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1739 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1740 | /* If the meaning of expression itself changed, the old value is |
1741 | no longer relevant. We don't want to report a watchpoint hit | |
1742 | to the user when the old value and the new value may actually | |
1743 | be completely different objects. */ | |
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; |
a6535de1 TT |
1781 | std::vector<value_ref_ptr> val_chain; |
1782 | struct value *v, *result, *next; | |
2d134ed3 | 1783 | struct program_space *frame_pspace; |
a5606eee | 1784 | |
4d01a485 | 1785 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1786 | |
a5606eee VP |
1787 | /* Avoid setting b->val if it's already set. The meaning of |
1788 | b->val is 'the last value' user saw, and we should update | |
1789 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1790 | happens, the code that reports it updates b->val directly. |
1791 | We don't keep track of the memory value for masked | |
1792 | watchpoints. */ | |
c1fc2657 | 1793 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1794 | { |
bb9d5f81 | 1795 | if (b->val_bitsize != 0) |
850645cf TT |
1796 | v = extract_bitfield_from_watchpoint_value (b, v); |
1797 | b->val = release_value (v); | |
fa4727a6 DJ |
1798 | b->val_valid = 1; |
1799 | } | |
a5606eee | 1800 | |
2d134ed3 PA |
1801 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1802 | ||
a5606eee | 1803 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1804 | gdb_assert (!val_chain.empty ()); |
1805 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1806 | { |
a6535de1 TT |
1807 | v = iter.get (); |
1808 | ||
a5606eee VP |
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 |
a6535de1 | 1815 | && (v == val_chain[0] || ! 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 | ||
c7437ca6 PA |
1970 | /* If a software watchpoint is not watching any memory, then the |
1971 | above left it without any location set up. But, | |
1972 | bpstat_stop_status requires a location to be able to report | |
1973 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1974 | if (b->type == bp_watchpoint && b->loc == NULL) |
1975 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1976 | } |
1977 | else if (!within_current_scope) | |
7270d8f2 | 1978 | { |
ac74f770 MS |
1979 | printf_filtered (_("\ |
1980 | Watchpoint %d deleted because the program has left the block\n\ | |
1981 | in which its expression is valid.\n"), | |
c1fc2657 | 1982 | b->number); |
d0fb5eae | 1983 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1984 | } |
a5606eee VP |
1985 | |
1986 | /* Restore the selected frame. */ | |
66076460 DJ |
1987 | if (frame_saved) |
1988 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1989 | } |
1990 | ||
a5606eee | 1991 | |
74960c60 | 1992 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1993 | inserted in the inferior. We don't differentiate the type of BL's owner |
1994 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1995 | breakpoint_ops is not defined, because in insert_bp_location, | |
1996 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1997 | static int |
35df4500 | 1998 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1999 | { |
35df4500 | 2000 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2001 | return 0; |
2002 | ||
35df4500 | 2003 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2004 | return 0; |
2005 | ||
35df4500 | 2006 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2007 | return 0; |
2008 | ||
f8eba3c6 TT |
2009 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2010 | return 0; | |
2011 | ||
56710373 PA |
2012 | /* This is set for example, when we're attached to the parent of a |
2013 | vfork, and have detached from the child. The child is running | |
2014 | free, and we expect it to do an exec or exit, at which point the | |
2015 | OS makes the parent schedulable again (and the target reports | |
2016 | that the vfork is done). Until the child is done with the shared | |
2017 | memory region, do not insert breakpoints in the parent, otherwise | |
2018 | the child could still trip on the parent's breakpoints. Since | |
2019 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2020 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2021 | return 0; |
2022 | ||
31e77af2 | 2023 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2024 | location, except if the breakpoint is a single-step breakpoint, |
2025 | and the breakpoint's thread is the thread which is stepping past | |
2026 | a breakpoint. */ | |
31e77af2 PA |
2027 | if ((bl->loc_type == bp_loc_software_breakpoint |
2028 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2029 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2030 | bl->address) |
2031 | /* The single-step breakpoint may be inserted at the location | |
2032 | we're trying to step if the instruction branches to itself. | |
2033 | However, the instruction won't be executed at all and it may | |
2034 | break the semantics of the instruction, for example, the | |
2035 | instruction is a conditional branch or updates some flags. | |
2036 | We can't fix it unless GDB is able to emulate the instruction | |
2037 | or switch to displaced stepping. */ | |
2038 | && !(bl->owner->type == bp_single_step | |
2039 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2040 | { |
2041 | if (debug_infrun) | |
2042 | { | |
2043 | fprintf_unfiltered (gdb_stdlog, | |
2044 | "infrun: skipping breakpoint: " | |
2045 | "stepping past insn at: %s\n", | |
2046 | paddress (bl->gdbarch, bl->address)); | |
2047 | } | |
2048 | return 0; | |
2049 | } | |
31e77af2 | 2050 | |
963f9c80 PA |
2051 | /* Don't insert watchpoints if we're trying to step past the |
2052 | instruction that triggered one. */ | |
2053 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2054 | && stepping_past_nonsteppable_watchpoint ()) | |
2055 | { | |
2056 | if (debug_infrun) | |
2057 | { | |
2058 | fprintf_unfiltered (gdb_stdlog, | |
2059 | "infrun: stepping past non-steppable watchpoint. " | |
2060 | "skipping watchpoint at %s:%d\n", | |
2061 | paddress (bl->gdbarch, bl->address), | |
2062 | bl->length); | |
2063 | } | |
2064 | return 0; | |
2065 | } | |
2066 | ||
74960c60 VP |
2067 | return 1; |
2068 | } | |
2069 | ||
934709f0 PW |
2070 | /* Same as should_be_inserted but does the check assuming |
2071 | that the location is not duplicated. */ | |
2072 | ||
2073 | static int | |
2074 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2075 | { | |
2076 | int result; | |
2077 | const int save_duplicate = bl->duplicate; | |
2078 | ||
2079 | bl->duplicate = 0; | |
2080 | result = should_be_inserted (bl); | |
2081 | bl->duplicate = save_duplicate; | |
2082 | return result; | |
2083 | } | |
2084 | ||
b775012e LM |
2085 | /* Parses a conditional described by an expression COND into an |
2086 | agent expression bytecode suitable for evaluation | |
2087 | by the bytecode interpreter. Return NULL if there was | |
2088 | any error during parsing. */ | |
2089 | ||
833177a4 | 2090 | static agent_expr_up |
b775012e LM |
2091 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2092 | { | |
833177a4 | 2093 | if (cond == NULL) |
b775012e LM |
2094 | return NULL; |
2095 | ||
833177a4 PA |
2096 | agent_expr_up aexpr; |
2097 | ||
b775012e LM |
2098 | /* We don't want to stop processing, so catch any errors |
2099 | that may show up. */ | |
492d29ea | 2100 | TRY |
b775012e | 2101 | { |
036e657b | 2102 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2103 | } |
2104 | ||
492d29ea | 2105 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2106 | { |
2107 | /* If we got here, it means the condition could not be parsed to a valid | |
2108 | bytecode expression and thus can't be evaluated on the target's side. | |
2109 | It's no use iterating through the conditions. */ | |
b775012e | 2110 | } |
492d29ea | 2111 | END_CATCH |
b775012e LM |
2112 | |
2113 | /* We have a valid agent expression. */ | |
2114 | return aexpr; | |
2115 | } | |
2116 | ||
2117 | /* Based on location BL, create a list of breakpoint conditions to be | |
2118 | passed on to the target. If we have duplicated locations with different | |
2119 | conditions, we will add such conditions to the list. The idea is that the | |
2120 | target will evaluate the list of conditions and will only notify GDB when | |
2121 | one of them is true. */ | |
2122 | ||
2123 | static void | |
2124 | build_target_condition_list (struct bp_location *bl) | |
2125 | { | |
2126 | struct bp_location **locp = NULL, **loc2p; | |
2127 | int null_condition_or_parse_error = 0; | |
2128 | int modified = bl->needs_update; | |
2129 | struct bp_location *loc; | |
2130 | ||
8b4f3082 | 2131 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2132 | bl->target_info.conditions.clear (); |
8b4f3082 | 2133 | |
b775012e LM |
2134 | /* This is only meaningful if the target is |
2135 | evaluating conditions and if the user has | |
2136 | opted for condition evaluation on the target's | |
2137 | side. */ | |
2138 | if (gdb_evaluates_breakpoint_condition_p () | |
2139 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2140 | return; | |
2141 | ||
2142 | /* Do a first pass to check for locations with no assigned | |
2143 | conditions or conditions that fail to parse to a valid agent expression | |
2144 | bytecode. If any of these happen, then it's no use to send conditions | |
2145 | to the target since this location will always trigger and generate a | |
2146 | response back to GDB. */ | |
2147 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2148 | { | |
2149 | loc = (*loc2p); | |
2150 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2151 | { | |
2152 | if (modified) | |
2153 | { | |
b775012e LM |
2154 | /* Re-parse the conditions since something changed. In that |
2155 | case we already freed the condition bytecodes (see | |
2156 | force_breakpoint_reinsertion). We just | |
2157 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2158 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2159 | loc->cond.get ()); | |
b775012e LM |
2160 | } |
2161 | ||
2162 | /* If we have a NULL bytecode expression, it means something | |
2163 | went wrong or we have a null condition expression. */ | |
2164 | if (!loc->cond_bytecode) | |
2165 | { | |
2166 | null_condition_or_parse_error = 1; | |
2167 | break; | |
2168 | } | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | /* If any of these happened, it means we will have to evaluate the conditions | |
2173 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2174 | for all the other duplicate locations, thus we free all of them here. | |
2175 | ||
2176 | This is so we have a finer control over which locations' conditions are | |
2177 | being evaluated by GDB or the remote stub. */ | |
2178 | if (null_condition_or_parse_error) | |
2179 | { | |
2180 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2181 | { | |
2182 | loc = (*loc2p); | |
2183 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2184 | { | |
2185 | /* Only go as far as the first NULL bytecode is | |
2186 | located. */ | |
2187 | if (!loc->cond_bytecode) | |
2188 | return; | |
2189 | ||
833177a4 | 2190 | loc->cond_bytecode.reset (); |
b775012e LM |
2191 | } |
2192 | } | |
2193 | } | |
2194 | ||
2195 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2196 | for this location's address. */ | |
2197 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2198 | { | |
2199 | loc = (*loc2p); | |
2200 | if (loc->cond | |
2201 | && is_breakpoint (loc->owner) | |
2202 | && loc->pspace->num == bl->pspace->num | |
2203 | && loc->owner->enable_state == bp_enabled | |
2204 | && loc->enabled) | |
3cde5c42 PA |
2205 | { |
2206 | /* Add the condition to the vector. This will be used later | |
2207 | to send the conditions to the target. */ | |
2208 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2209 | } | |
b775012e LM |
2210 | } |
2211 | ||
2212 | return; | |
2213 | } | |
2214 | ||
d3ce09f5 SS |
2215 | /* Parses a command described by string CMD into an agent expression |
2216 | bytecode suitable for evaluation by the bytecode interpreter. | |
2217 | Return NULL if there was any error during parsing. */ | |
2218 | ||
833177a4 | 2219 | static agent_expr_up |
d3ce09f5 SS |
2220 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2221 | { | |
bbc13ae3 KS |
2222 | const char *cmdrest; |
2223 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2224 | struct gdbarch *gdbarch = get_current_arch (); |
2225 | ||
833177a4 | 2226 | if (cmd == NULL) |
d3ce09f5 SS |
2227 | return NULL; |
2228 | ||
2229 | cmdrest = cmd; | |
2230 | ||
2231 | if (*cmdrest == ',') | |
2232 | ++cmdrest; | |
f1735a53 | 2233 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2234 | |
2235 | if (*cmdrest++ != '"') | |
2236 | error (_("No format string following the location")); | |
2237 | ||
2238 | format_start = cmdrest; | |
2239 | ||
8e481c3b | 2240 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2241 | |
2242 | format_end = cmdrest; | |
2243 | ||
2244 | if (*cmdrest++ != '"') | |
2245 | error (_("Bad format string, non-terminated '\"'.")); | |
2246 | ||
f1735a53 | 2247 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2248 | |
2249 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2250 | error (_("Invalid argument syntax")); | |
2251 | ||
2252 | if (*cmdrest == ',') | |
2253 | cmdrest++; | |
f1735a53 | 2254 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2255 | |
2256 | /* For each argument, make an expression. */ | |
2257 | ||
8e481c3b | 2258 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2259 | while (*cmdrest != '\0') |
2260 | { | |
bbc13ae3 | 2261 | const char *cmd1; |
d3ce09f5 SS |
2262 | |
2263 | cmd1 = cmdrest; | |
4d01a485 | 2264 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2265 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2266 | cmdrest = cmd1; |
2267 | if (*cmdrest == ',') | |
2268 | ++cmdrest; | |
2269 | } | |
2270 | ||
833177a4 PA |
2271 | agent_expr_up aexpr; |
2272 | ||
d3ce09f5 SS |
2273 | /* We don't want to stop processing, so catch any errors |
2274 | that may show up. */ | |
492d29ea | 2275 | TRY |
d3ce09f5 | 2276 | { |
036e657b JB |
2277 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2278 | format_start, format_end - format_start, | |
8e481c3b | 2279 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2280 | } |
492d29ea | 2281 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2282 | { |
2283 | /* If we got here, it means the command could not be parsed to a valid | |
2284 | bytecode expression and thus can't be evaluated on the target's side. | |
2285 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2286 | } |
492d29ea PA |
2287 | END_CATCH |
2288 | ||
d3ce09f5 SS |
2289 | /* We have a valid agent expression, return it. */ |
2290 | return aexpr; | |
2291 | } | |
2292 | ||
2293 | /* Based on location BL, create a list of breakpoint commands to be | |
2294 | passed on to the target. If we have duplicated locations with | |
2295 | different commands, we will add any such to the list. */ | |
2296 | ||
2297 | static void | |
2298 | build_target_command_list (struct bp_location *bl) | |
2299 | { | |
2300 | struct bp_location **locp = NULL, **loc2p; | |
2301 | int null_command_or_parse_error = 0; | |
2302 | int modified = bl->needs_update; | |
2303 | struct bp_location *loc; | |
2304 | ||
3cde5c42 PA |
2305 | /* Clear commands left over from a previous insert. */ |
2306 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2307 | |
41fac0cf | 2308 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2309 | return; |
2310 | ||
41fac0cf PA |
2311 | /* For now, limit to agent-style dprintf breakpoints. */ |
2312 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2313 | return; |
2314 | ||
41fac0cf PA |
2315 | /* For now, if we have any duplicate location that isn't a dprintf, |
2316 | don't install the target-side commands, as that would make the | |
2317 | breakpoint not be reported to the core, and we'd lose | |
2318 | control. */ | |
2319 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2320 | { | |
2321 | loc = (*loc2p); | |
2322 | if (is_breakpoint (loc->owner) | |
2323 | && loc->pspace->num == bl->pspace->num | |
2324 | && loc->owner->type != bp_dprintf) | |
2325 | return; | |
2326 | } | |
2327 | ||
d3ce09f5 SS |
2328 | /* Do a first pass to check for locations with no assigned |
2329 | conditions or conditions that fail to parse to a valid agent expression | |
2330 | bytecode. If any of these happen, then it's no use to send conditions | |
2331 | to the target since this location will always trigger and generate a | |
2332 | response back to GDB. */ | |
2333 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2334 | { | |
2335 | loc = (*loc2p); | |
2336 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2337 | { | |
2338 | if (modified) | |
2339 | { | |
d3ce09f5 SS |
2340 | /* Re-parse the commands since something changed. In that |
2341 | case we already freed the command bytecodes (see | |
2342 | force_breakpoint_reinsertion). We just | |
2343 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2344 | loc->cmd_bytecode |
2345 | = parse_cmd_to_aexpr (bl->address, | |
2346 | loc->owner->extra_string); | |
d3ce09f5 SS |
2347 | } |
2348 | ||
2349 | /* If we have a NULL bytecode expression, it means something | |
2350 | went wrong or we have a null command expression. */ | |
2351 | if (!loc->cmd_bytecode) | |
2352 | { | |
2353 | null_command_or_parse_error = 1; | |
2354 | break; | |
2355 | } | |
2356 | } | |
2357 | } | |
2358 | ||
2359 | /* If anything failed, then we're not doing target-side commands, | |
2360 | and so clean up. */ | |
2361 | if (null_command_or_parse_error) | |
2362 | { | |
2363 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2364 | { | |
2365 | loc = (*loc2p); | |
2366 | if (is_breakpoint (loc->owner) | |
2367 | && loc->pspace->num == bl->pspace->num) | |
2368 | { | |
2369 | /* Only go as far as the first NULL bytecode is | |
2370 | located. */ | |
40fb6c5e | 2371 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2372 | return; |
2373 | ||
833177a4 | 2374 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2375 | } |
2376 | } | |
2377 | } | |
2378 | ||
2379 | /* No NULL commands or failed bytecode generation. Build a command list | |
2380 | for this location's address. */ | |
2381 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2382 | { | |
2383 | loc = (*loc2p); | |
2384 | if (loc->owner->extra_string | |
2385 | && is_breakpoint (loc->owner) | |
2386 | && loc->pspace->num == bl->pspace->num | |
2387 | && loc->owner->enable_state == bp_enabled | |
2388 | && loc->enabled) | |
3cde5c42 PA |
2389 | { |
2390 | /* Add the command to the vector. This will be used later | |
2391 | to send the commands to the target. */ | |
2392 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2393 | } | |
d3ce09f5 SS |
2394 | } |
2395 | ||
2396 | bl->target_info.persist = 0; | |
2397 | /* Maybe flag this location as persistent. */ | |
2398 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2399 | bl->target_info.persist = 1; | |
2400 | } | |
2401 | ||
833b7ab5 YQ |
2402 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2403 | of breakpoint according to ADDR except single-step breakpoint. | |
2404 | Get the kind of single-step breakpoint according to the current | |
2405 | registers state. */ | |
cd6c3b4f YQ |
2406 | |
2407 | static int | |
2408 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2409 | { | |
833b7ab5 YQ |
2410 | if (bl->owner->type == bp_single_step) |
2411 | { | |
2412 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2413 | struct regcache *regcache; | |
2414 | ||
2415 | regcache = get_thread_regcache (thr->ptid); | |
2416 | ||
2417 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2418 | regcache, addr); | |
2419 | } | |
2420 | else | |
2421 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2422 | } |
2423 | ||
35df4500 TJB |
2424 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2425 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2426 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2427 | Returns 0 for success, 1 if the bp_location type is not supported or |
2428 | -1 for failure. | |
879bfdc2 | 2429 | |
4a64f543 MS |
2430 | NOTE drow/2003-09-09: This routine could be broken down to an |
2431 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2432 | static int |
35df4500 | 2433 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2434 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2435 | int *disabled_breaks, |
dd61ec5c MW |
2436 | int *hw_breakpoint_error, |
2437 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2438 | { |
688fca4f | 2439 | gdb_exception bp_excpt = exception_none; |
879bfdc2 | 2440 | |
b775012e | 2441 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2442 | return 0; |
2443 | ||
35c63cd8 JB |
2444 | /* Note we don't initialize bl->target_info, as that wipes out |
2445 | the breakpoint location's shadow_contents if the breakpoint | |
2446 | is still inserted at that location. This in turn breaks | |
2447 | target_read_memory which depends on these buffers when | |
2448 | a memory read is requested at the breakpoint location: | |
2449 | Once the target_info has been wiped, we fail to see that | |
2450 | we have a breakpoint inserted at that address and thus | |
2451 | read the breakpoint instead of returning the data saved in | |
2452 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2453 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2454 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2455 | bl->target_info.length = bl->length; |
8181d85f | 2456 | |
b775012e LM |
2457 | /* When working with target-side conditions, we must pass all the conditions |
2458 | for the same breakpoint address down to the target since GDB will not | |
2459 | insert those locations. With a list of breakpoint conditions, the target | |
2460 | can decide when to stop and notify GDB. */ | |
2461 | ||
2462 | if (is_breakpoint (bl->owner)) | |
2463 | { | |
2464 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2465 | build_target_command_list (bl); |
2466 | /* Reset the modification marker. */ | |
b775012e LM |
2467 | bl->needs_update = 0; |
2468 | } | |
2469 | ||
35df4500 TJB |
2470 | if (bl->loc_type == bp_loc_software_breakpoint |
2471 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2472 | { |
35df4500 | 2473 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2474 | { |
2475 | /* If the explicitly specified breakpoint type | |
2476 | is not hardware breakpoint, check the memory map to see | |
2477 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2478 | |
765dc015 VP |
2479 | Two important cases are: |
2480 | - location type is not hardware breakpoint, memory | |
2481 | is readonly. We change the type of the location to | |
2482 | hardware breakpoint. | |
4a64f543 MS |
2483 | - location type is hardware breakpoint, memory is |
2484 | read-write. This means we've previously made the | |
2485 | location hardware one, but then the memory map changed, | |
2486 | so we undo. | |
765dc015 | 2487 | |
4a64f543 MS |
2488 | When breakpoints are removed, remove_breakpoints will use |
2489 | location types we've just set here, the only possible | |
2490 | problem is that memory map has changed during running | |
2491 | program, but it's not going to work anyway with current | |
2492 | gdb. */ | |
765dc015 | 2493 | struct mem_region *mr |
0d5ed153 | 2494 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2495 | |
2496 | if (mr) | |
2497 | { | |
2498 | if (automatic_hardware_breakpoints) | |
2499 | { | |
765dc015 VP |
2500 | enum bp_loc_type new_type; |
2501 | ||
2502 | if (mr->attrib.mode != MEM_RW) | |
2503 | new_type = bp_loc_hardware_breakpoint; | |
2504 | else | |
2505 | new_type = bp_loc_software_breakpoint; | |
2506 | ||
35df4500 | 2507 | if (new_type != bl->loc_type) |
765dc015 VP |
2508 | { |
2509 | static int said = 0; | |
cc59ec59 | 2510 | |
35df4500 | 2511 | bl->loc_type = new_type; |
765dc015 VP |
2512 | if (!said) |
2513 | { | |
3e43a32a MS |
2514 | fprintf_filtered (gdb_stdout, |
2515 | _("Note: automatically using " | |
2516 | "hardware breakpoints for " | |
2517 | "read-only addresses.\n")); | |
765dc015 VP |
2518 | said = 1; |
2519 | } | |
2520 | } | |
2521 | } | |
35df4500 | 2522 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2523 | && mr->attrib.mode != MEM_RW) |
2524 | { | |
2525 | fprintf_unfiltered (tmp_error_stream, | |
2526 | _("Cannot insert breakpoint %d.\n" | |
2527 | "Cannot set software breakpoint " | |
2528 | "at read-only address %s\n"), | |
2529 | bl->owner->number, | |
2530 | paddress (bl->gdbarch, bl->address)); | |
2531 | return 1; | |
2532 | } | |
765dc015 VP |
2533 | } |
2534 | } | |
2535 | ||
879bfdc2 DJ |
2536 | /* First check to see if we have to handle an overlay. */ |
2537 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2538 | || bl->section == NULL |
2539 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2540 | { |
2541 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2542 | TRY |
dd61ec5c | 2543 | { |
0000e5cc PA |
2544 | int val; |
2545 | ||
dd61ec5c | 2546 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2547 | if (val) |
688fca4f | 2548 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2549 | } |
492d29ea | 2550 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2551 | { |
688fca4f | 2552 | bp_excpt = e; |
dd61ec5c | 2553 | } |
492d29ea | 2554 | END_CATCH |
879bfdc2 DJ |
2555 | } |
2556 | else | |
2557 | { | |
4a64f543 | 2558 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2559 | Shall we set a breakpoint at the LMA? */ |
2560 | if (!overlay_events_enabled) | |
2561 | { | |
2562 | /* Yes -- overlay event support is not active, | |
2563 | so we must try to set a breakpoint at the LMA. | |
2564 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2565 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2566 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2567 | bl->owner->number); |
879bfdc2 DJ |
2568 | else |
2569 | { | |
35df4500 TJB |
2570 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2571 | bl->section); | |
879bfdc2 | 2572 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2573 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2574 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2575 | |
2576 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2577 | TRY |
0000e5cc PA |
2578 | { |
2579 | int val; | |
2580 | ||
579c6ad9 | 2581 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2582 | = breakpoint_kind (bl, &addr); |
2583 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2584 | val = target_insert_breakpoint (bl->gdbarch, |
2585 | &bl->overlay_target_info); | |
2586 | if (val) | |
688fca4f PA |
2587 | bp_excpt |
2588 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2589 | } |
492d29ea | 2590 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc | 2591 | { |
688fca4f | 2592 | bp_excpt = e; |
0000e5cc | 2593 | } |
492d29ea | 2594 | END_CATCH |
0000e5cc | 2595 | |
688fca4f | 2596 | if (bp_excpt.reason != 0) |
99361f52 | 2597 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2598 | "Overlay breakpoint %d " |
2599 | "failed: in ROM?\n", | |
35df4500 | 2600 | bl->owner->number); |
879bfdc2 DJ |
2601 | } |
2602 | } | |
2603 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2604 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2605 | { |
2606 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2607 | TRY |
dd61ec5c | 2608 | { |
0000e5cc PA |
2609 | int val; |
2610 | ||
dd61ec5c | 2611 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2612 | if (val) |
688fca4f | 2613 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2614 | } |
492d29ea | 2615 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2616 | { |
688fca4f | 2617 | bp_excpt = e; |
dd61ec5c | 2618 | } |
492d29ea | 2619 | END_CATCH |
879bfdc2 DJ |
2620 | } |
2621 | else | |
2622 | { | |
2623 | /* No. This breakpoint will not be inserted. | |
2624 | No error, but do not mark the bp as 'inserted'. */ | |
2625 | return 0; | |
2626 | } | |
2627 | } | |
2628 | ||
688fca4f | 2629 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2630 | { |
2631 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2632 | |
2633 | /* In some cases, we might not be able to insert a | |
2634 | breakpoint in a shared library that has already been | |
2635 | removed, but we have not yet processed the shlib unload | |
2636 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2637 | breakpoint insertion themselves can't tell why the |
2638 | breakpoint insertion failed (e.g., the remote target | |
2639 | doesn't define error codes), so we must treat generic | |
2640 | errors as memory errors. */ | |
688fca4f PA |
2641 | if (bp_excpt.reason == RETURN_ERROR |
2642 | && (bp_excpt.error == GENERIC_ERROR | |
2643 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2644 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2645 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2646 | || shared_objfile_contains_address_p (bl->pspace, |
2647 | bl->address))) | |
879bfdc2 | 2648 | { |
4a64f543 | 2649 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2650 | bl->shlib_disabled = 1; |
76727919 | 2651 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2652 | if (!*disabled_breaks) |
2653 | { | |
2654 | fprintf_unfiltered (tmp_error_stream, | |
2655 | "Cannot insert breakpoint %d.\n", | |
2656 | bl->owner->number); | |
2657 | fprintf_unfiltered (tmp_error_stream, | |
2658 | "Temporarily disabling shared " | |
2659 | "library breakpoints:\n"); | |
2660 | } | |
2661 | *disabled_breaks = 1; | |
879bfdc2 | 2662 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2663 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2664 | return 0; |
879bfdc2 DJ |
2665 | } |
2666 | else | |
879bfdc2 | 2667 | { |
35df4500 | 2668 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2669 | { |
0000e5cc | 2670 | *hw_breakpoint_error = 1; |
688fca4f | 2671 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2672 | fprintf_unfiltered (tmp_error_stream, |
2673 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2674 | bl->owner->number, |
2675 | bp_excpt.message ? ":" : ".\n"); | |
2676 | if (bp_excpt.message != NULL) | |
2677 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
2678 | bp_excpt.message); | |
879bfdc2 DJ |
2679 | } |
2680 | else | |
2681 | { | |
688fca4f | 2682 | if (bp_excpt.message == NULL) |
0000e5cc | 2683 | { |
1ccbe998 | 2684 | std::string message |
0000e5cc PA |
2685 | = memory_error_message (TARGET_XFER_E_IO, |
2686 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2687 | |
2688 | fprintf_unfiltered (tmp_error_stream, | |
2689 | "Cannot insert breakpoint %d.\n" | |
2690 | "%s\n", | |
1ccbe998 | 2691 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2692 | } |
2693 | else | |
2694 | { | |
2695 | fprintf_unfiltered (tmp_error_stream, | |
2696 | "Cannot insert breakpoint %d: %s\n", | |
2697 | bl->owner->number, | |
688fca4f | 2698 | bp_excpt.message); |
0000e5cc | 2699 | } |
879bfdc2 | 2700 | } |
0000e5cc | 2701 | return 1; |
879bfdc2 DJ |
2702 | |
2703 | } | |
2704 | } | |
2705 | else | |
35df4500 | 2706 | bl->inserted = 1; |
879bfdc2 | 2707 | |
0000e5cc | 2708 | return 0; |
879bfdc2 DJ |
2709 | } |
2710 | ||
35df4500 | 2711 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2712 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2713 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2714 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2715 | { |
0000e5cc PA |
2716 | int val; |
2717 | ||
77b06cd7 TJB |
2718 | gdb_assert (bl->owner->ops != NULL |
2719 | && bl->owner->ops->insert_location != NULL); | |
2720 | ||
2721 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2722 | |
2723 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2724 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2725 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2726 | { |
2727 | struct bp_location *loc, **loc_temp; | |
2728 | ||
2729 | /* But don't try to insert it, if there's already another | |
2730 | hw_access location that would be considered a duplicate | |
2731 | of this one. */ | |
2732 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2733 | if (loc != bl |
85d721b8 | 2734 | && loc->watchpoint_type == hw_access |
35df4500 | 2735 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2736 | { |
35df4500 TJB |
2737 | bl->duplicate = 1; |
2738 | bl->inserted = 1; | |
2739 | bl->target_info = loc->target_info; | |
2740 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2741 | val = 0; |
2742 | break; | |
2743 | } | |
2744 | ||
2745 | if (val == 1) | |
2746 | { | |
77b06cd7 TJB |
2747 | bl->watchpoint_type = hw_access; |
2748 | val = bl->owner->ops->insert_location (bl); | |
2749 | ||
2750 | if (val) | |
2751 | /* Back to the original value. */ | |
2752 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2753 | } |
2754 | } | |
2755 | ||
35df4500 | 2756 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2757 | } |
2758 | ||
35df4500 | 2759 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2760 | { |
0000e5cc PA |
2761 | int val; |
2762 | ||
77b06cd7 TJB |
2763 | gdb_assert (bl->owner->ops != NULL |
2764 | && bl->owner->ops->insert_location != NULL); | |
2765 | ||
2766 | val = bl->owner->ops->insert_location (bl); | |
2767 | if (val) | |
2768 | { | |
2769 | bl->owner->enable_state = bp_disabled; | |
2770 | ||
2771 | if (val == 1) | |
2772 | warning (_("\ | |
2773 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2774 | of catchpoint."), bl->owner->number); | |
2775 | else | |
2776 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2777 | } | |
2778 | ||
2779 | bl->inserted = (val == 0); | |
1640b821 DJ |
2780 | |
2781 | /* We've already printed an error message if there was a problem | |
2782 | inserting this catchpoint, and we've disabled the catchpoint, | |
2783 | so just return success. */ | |
2784 | return 0; | |
879bfdc2 DJ |
2785 | } |
2786 | ||
2787 | return 0; | |
2788 | } | |
2789 | ||
6c95b8df PA |
2790 | /* This function is called when program space PSPACE is about to be |
2791 | deleted. It takes care of updating breakpoints to not reference | |
2792 | PSPACE anymore. */ | |
2793 | ||
2794 | void | |
2795 | breakpoint_program_space_exit (struct program_space *pspace) | |
2796 | { | |
2797 | struct breakpoint *b, *b_temp; | |
876fa593 | 2798 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2799 | |
2800 | /* Remove any breakpoint that was set through this program space. */ | |
2801 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2802 | { | |
2803 | if (b->pspace == pspace) | |
2804 | delete_breakpoint (b); | |
2805 | } | |
2806 | ||
2807 | /* Breakpoints set through other program spaces could have locations | |
2808 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2809 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2810 | { |
2811 | struct bp_location *tmp; | |
2812 | ||
2813 | if (loc->pspace == pspace) | |
2814 | { | |
2bdf28a0 | 2815 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2816 | if (loc->owner->loc == loc) |
2817 | loc->owner->loc = loc->next; | |
2818 | else | |
2819 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2820 | if (tmp->next == loc) | |
2821 | { | |
2822 | tmp->next = loc->next; | |
2823 | break; | |
2824 | } | |
2825 | } | |
2826 | } | |
2827 | ||
2828 | /* Now update the global location list to permanently delete the | |
2829 | removed locations above. */ | |
44702360 | 2830 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2831 | } |
2832 | ||
74960c60 VP |
2833 | /* Make sure all breakpoints are inserted in inferior. |
2834 | Throws exception on any error. | |
2835 | A breakpoint that is already inserted won't be inserted | |
2836 | again, so calling this function twice is safe. */ | |
2837 | void | |
2838 | insert_breakpoints (void) | |
2839 | { | |
2840 | struct breakpoint *bpt; | |
2841 | ||
2842 | ALL_BREAKPOINTS (bpt) | |
2843 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2844 | { |
2845 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2846 | ||
2847 | update_watchpoint (w, 0 /* don't reparse. */); | |
2848 | } | |
74960c60 | 2849 | |
04086b45 PA |
2850 | /* Updating watchpoints creates new locations, so update the global |
2851 | location list. Explicitly tell ugll to insert locations and | |
2852 | ignore breakpoints_always_inserted_mode. */ | |
2853 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2854 | } |
2855 | ||
20388dd6 YQ |
2856 | /* Invoke CALLBACK for each of bp_location. */ |
2857 | ||
2858 | void | |
2859 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2860 | { | |
2861 | struct bp_location *loc, **loc_tmp; | |
2862 | ||
2863 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2864 | { | |
2865 | callback (loc, NULL); | |
2866 | } | |
2867 | } | |
2868 | ||
b775012e LM |
2869 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2870 | target. It is the case with deleting and disabling of breakpoints when using | |
2871 | always-inserted mode. */ | |
2872 | ||
2873 | static void | |
2874 | update_inserted_breakpoint_locations (void) | |
2875 | { | |
2876 | struct bp_location *bl, **blp_tmp; | |
2877 | int error_flag = 0; | |
2878 | int val = 0; | |
2879 | int disabled_breaks = 0; | |
2880 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2881 | int hw_bp_details_reported = 0; |
b775012e | 2882 | |
d7e74731 | 2883 | string_file tmp_error_stream; |
b775012e LM |
2884 | |
2885 | /* Explicitly mark the warning -- this will only be printed if | |
2886 | there was an error. */ | |
d7e74731 | 2887 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2888 | |
5ed8105e | 2889 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2890 | |
2891 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2892 | { | |
2893 | /* We only want to update software breakpoints and hardware | |
2894 | breakpoints. */ | |
2895 | if (!is_breakpoint (bl->owner)) | |
2896 | continue; | |
2897 | ||
2898 | /* We only want to update locations that are already inserted | |
2899 | and need updating. This is to avoid unwanted insertion during | |
2900 | deletion of breakpoints. */ | |
2901 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2902 | continue; | |
2903 | ||
2904 | switch_to_program_space_and_thread (bl->pspace); | |
2905 | ||
2906 | /* For targets that support global breakpoints, there's no need | |
2907 | to select an inferior to insert breakpoint to. In fact, even | |
2908 | if we aren't attached to any process yet, we should still | |
2909 | insert breakpoints. */ | |
f5656ead | 2910 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2911 | && ptid_equal (inferior_ptid, null_ptid)) |
2912 | continue; | |
2913 | ||
d7e74731 | 2914 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2915 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2916 | if (val) |
2917 | error_flag = val; | |
2918 | } | |
2919 | ||
2920 | if (error_flag) | |
2921 | { | |
223ffa71 | 2922 | target_terminal::ours_for_output (); |
b775012e LM |
2923 | error_stream (tmp_error_stream); |
2924 | } | |
b775012e LM |
2925 | } |
2926 | ||
c30eee59 | 2927 | /* Used when starting or continuing the program. */ |
c906108c | 2928 | |
74960c60 VP |
2929 | static void |
2930 | insert_breakpoint_locations (void) | |
c906108c | 2931 | { |
a5606eee | 2932 | struct breakpoint *bpt; |
35df4500 | 2933 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2934 | int error_flag = 0; |
c906108c | 2935 | int val = 0; |
3fbb6ffa | 2936 | int disabled_breaks = 0; |
81d0cc19 | 2937 | int hw_breakpoint_error = 0; |
dd61ec5c | 2938 | int hw_bp_error_explained_already = 0; |
c906108c | 2939 | |
d7e74731 PA |
2940 | string_file tmp_error_stream; |
2941 | ||
81d0cc19 GS |
2942 | /* Explicitly mark the warning -- this will only be printed if |
2943 | there was an error. */ | |
d7e74731 | 2944 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2945 | |
5ed8105e | 2946 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2947 | |
35df4500 | 2948 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2949 | { |
b775012e | 2950 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2951 | continue; |
2952 | ||
4a64f543 MS |
2953 | /* There is no point inserting thread-specific breakpoints if |
2954 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2955 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2956 | if (bl->owner->thread != -1 |
5d5658a1 | 2957 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2958 | continue; |
2959 | ||
35df4500 | 2960 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2961 | |
2962 | /* For targets that support global breakpoints, there's no need | |
2963 | to select an inferior to insert breakpoint to. In fact, even | |
2964 | if we aren't attached to any process yet, we should still | |
2965 | insert breakpoints. */ | |
f5656ead | 2966 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2967 | && ptid_equal (inferior_ptid, null_ptid)) |
2968 | continue; | |
2969 | ||
d7e74731 | 2970 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2971 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2972 | if (val) |
eacd795a | 2973 | error_flag = val; |
879bfdc2 | 2974 | } |
c906108c | 2975 | |
4a64f543 MS |
2976 | /* If we failed to insert all locations of a watchpoint, remove |
2977 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2978 | ALL_BREAKPOINTS (bpt) |
2979 | { | |
2980 | int some_failed = 0; | |
2981 | struct bp_location *loc; | |
2982 | ||
2983 | if (!is_hardware_watchpoint (bpt)) | |
2984 | continue; | |
2985 | ||
d6b74ac4 | 2986 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2987 | continue; |
74960c60 VP |
2988 | |
2989 | if (bpt->disposition == disp_del_at_next_stop) | |
2990 | continue; | |
a5606eee VP |
2991 | |
2992 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2993 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2994 | { |
2995 | some_failed = 1; | |
2996 | break; | |
2997 | } | |
2998 | if (some_failed) | |
2999 | { | |
3000 | for (loc = bpt->loc; loc; loc = loc->next) | |
3001 | if (loc->inserted) | |
834c0d03 | 3002 | remove_breakpoint (loc); |
a5606eee VP |
3003 | |
3004 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3005 | tmp_error_stream.printf ("Could not insert " |
3006 | "hardware watchpoint %d.\n", | |
3007 | bpt->number); | |
eacd795a | 3008 | error_flag = -1; |
a5606eee VP |
3009 | } |
3010 | } | |
3011 | ||
eacd795a | 3012 | if (error_flag) |
81d0cc19 GS |
3013 | { |
3014 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3015 | message about possibly exhausted resources. */ | |
dd61ec5c | 3016 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3017 | { |
d7e74731 | 3018 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3019 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3020 | } |
223ffa71 | 3021 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3022 | error_stream (tmp_error_stream); |
3023 | } | |
c906108c SS |
3024 | } |
3025 | ||
c30eee59 TJB |
3026 | /* Used when the program stops. |
3027 | Returns zero if successful, or non-zero if there was a problem | |
3028 | removing a breakpoint location. */ | |
3029 | ||
c906108c | 3030 | int |
fba45db2 | 3031 | remove_breakpoints (void) |
c906108c | 3032 | { |
35df4500 | 3033 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3034 | int val = 0; |
c906108c | 3035 | |
35df4500 | 3036 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3037 | { |
1e4d1764 | 3038 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3039 | val |= remove_breakpoint (bl); |
c5aa993b | 3040 | } |
3a1bae8e | 3041 | return val; |
c906108c SS |
3042 | } |
3043 | ||
49fa26b0 PA |
3044 | /* When a thread exits, remove breakpoints that are related to |
3045 | that thread. */ | |
3046 | ||
3047 | static void | |
3048 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3049 | { | |
3050 | struct breakpoint *b, *b_tmp; | |
3051 | ||
3052 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3053 | { | |
5d5658a1 | 3054 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3055 | { |
3056 | b->disposition = disp_del_at_next_stop; | |
3057 | ||
3058 | printf_filtered (_("\ | |
43792cf0 PA |
3059 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3060 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3061 | |
3062 | /* Hide it from the user. */ | |
3063 | b->number = 0; | |
3064 | } | |
3065 | } | |
3066 | } | |
3067 | ||
6c95b8df PA |
3068 | /* Remove breakpoints of process PID. */ |
3069 | ||
3070 | int | |
3071 | remove_breakpoints_pid (int pid) | |
3072 | { | |
35df4500 | 3073 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3074 | int val; |
3075 | struct inferior *inf = find_inferior_pid (pid); | |
3076 | ||
35df4500 | 3077 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3078 | { |
35df4500 | 3079 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3080 | continue; |
3081 | ||
fc126975 | 3082 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3083 | { |
834c0d03 | 3084 | val = remove_breakpoint (bl); |
6c95b8df PA |
3085 | if (val != 0) |
3086 | return val; | |
3087 | } | |
3088 | } | |
3089 | return 0; | |
3090 | } | |
3091 | ||
e58b0e63 PA |
3092 | static int internal_breakpoint_number = -1; |
3093 | ||
84f4c1fe PM |
3094 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3095 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3096 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3097 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3098 | breakpoint_count and that value incremented. Internal breakpoints |
3099 | do not set the internal var bpnum. */ | |
3100 | static void | |
3101 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3102 | { | |
3103 | if (internal) | |
3104 | b->number = internal_breakpoint_number--; | |
3105 | else | |
3106 | { | |
3107 | set_breakpoint_count (breakpoint_count + 1); | |
3108 | b->number = breakpoint_count; | |
3109 | } | |
3110 | } | |
3111 | ||
e62c965a | 3112 | static struct breakpoint * |
a6d9a66e | 3113 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3114 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3115 | const struct breakpoint_ops *ops) |
e62c965a | 3116 | { |
51abb421 | 3117 | symtab_and_line sal; |
e62c965a PP |
3118 | sal.pc = address; |
3119 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3120 | sal.pspace = current_program_space; |
e62c965a | 3121 | |
51abb421 | 3122 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3123 | b->number = internal_breakpoint_number--; |
3124 | b->disposition = disp_donttouch; | |
3125 | ||
3126 | return b; | |
3127 | } | |
3128 | ||
17450429 PP |
3129 | static const char *const longjmp_names[] = |
3130 | { | |
3131 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3132 | }; | |
3133 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3134 | ||
3135 | /* Per-objfile data private to breakpoint.c. */ | |
3136 | struct breakpoint_objfile_data | |
3137 | { | |
3138 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3139 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3140 | |
3141 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3142 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3143 | |
28106bc2 | 3144 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3145 | int longjmp_searched = 0; |
28106bc2 | 3146 | |
45461e0d SM |
3147 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3148 | references. */ | |
3149 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3150 | |
17450429 | 3151 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3152 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3153 | |
3154 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3155 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3156 | |
3157 | /* True if we have looked for exception probes. */ | |
43dce439 | 3158 | int exception_searched = 0; |
28106bc2 | 3159 | |
45461e0d SM |
3160 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3161 | references. */ | |
3162 | std::vector<probe *> exception_probes; | |
17450429 PP |
3163 | }; |
3164 | ||
3165 | static const struct objfile_data *breakpoint_objfile_key; | |
3166 | ||
3167 | /* Minimal symbol not found sentinel. */ | |
3168 | static struct minimal_symbol msym_not_found; | |
3169 | ||
3170 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3171 | ||
3172 | static int | |
3173 | msym_not_found_p (const struct minimal_symbol *msym) | |
3174 | { | |
3175 | return msym == &msym_not_found; | |
3176 | } | |
3177 | ||
3178 | /* Return per-objfile data needed by breakpoint.c. | |
3179 | Allocate the data if necessary. */ | |
3180 | ||
3181 | static struct breakpoint_objfile_data * | |
3182 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3183 | { | |
3184 | struct breakpoint_objfile_data *bp_objfile_data; | |
3185 | ||
9a3c8263 SM |
3186 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3187 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3188 | if (bp_objfile_data == NULL) |
3189 | { | |
43dce439 | 3190 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3191 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3192 | } | |
3193 | return bp_objfile_data; | |
3194 | } | |
3195 | ||
28106bc2 | 3196 | static void |
43dce439 | 3197 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3198 | { |
9a3c8263 SM |
3199 | struct breakpoint_objfile_data *bp_objfile_data |
3200 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3201 | |
43dce439 | 3202 | delete bp_objfile_data; |
28106bc2 SDJ |
3203 | } |
3204 | ||
e62c965a | 3205 | static void |
af02033e | 3206 | create_overlay_event_breakpoint (void) |
e62c965a | 3207 | { |
69de3c6a | 3208 | struct objfile *objfile; |
af02033e | 3209 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3210 | |
69de3c6a PP |
3211 | ALL_OBJFILES (objfile) |
3212 | { | |
3213 | struct breakpoint *b; | |
17450429 PP |
3214 | struct breakpoint_objfile_data *bp_objfile_data; |
3215 | CORE_ADDR addr; | |
67994074 | 3216 | struct explicit_location explicit_loc; |
69de3c6a | 3217 | |
17450429 PP |
3218 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3219 | ||
3b7344d5 | 3220 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3221 | continue; |
3222 | ||
3b7344d5 | 3223 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3224 | { |
3b7344d5 | 3225 | struct bound_minimal_symbol m; |
17450429 PP |
3226 | |
3227 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3228 | if (m.minsym == NULL) |
17450429 PP |
3229 | { |
3230 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3231 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3232 | continue; |
3233 | } | |
3234 | bp_objfile_data->overlay_msym = m; | |
3235 | } | |
e62c965a | 3236 | |
77e371c0 | 3237 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3238 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3239 | bp_overlay_event, |
3240 | &internal_breakpoint_ops); | |
67994074 KS |
3241 | initialize_explicit_location (&explicit_loc); |
3242 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3243 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3244 | |
69de3c6a PP |
3245 | if (overlay_debugging == ovly_auto) |
3246 | { | |
3247 | b->enable_state = bp_enabled; | |
3248 | overlay_events_enabled = 1; | |
3249 | } | |
3250 | else | |
3251 | { | |
3252 | b->enable_state = bp_disabled; | |
3253 | overlay_events_enabled = 0; | |
3254 | } | |
e62c965a | 3255 | } |
e62c965a PP |
3256 | } |
3257 | ||
0fd8e87f | 3258 | static void |
af02033e | 3259 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3260 | { |
6c95b8df | 3261 | struct program_space *pspace; |
6c95b8df | 3262 | |
5ed8105e | 3263 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3264 | |
6c95b8df | 3265 | ALL_PSPACES (pspace) |
af02033e PP |
3266 | { |
3267 | struct objfile *objfile; | |
3268 | ||
3269 | set_current_program_space (pspace); | |
3270 | ||
3271 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3272 | { |
af02033e PP |
3273 | int i; |
3274 | struct gdbarch *gdbarch; | |
17450429 | 3275 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3276 | |
af02033e | 3277 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3278 | |
17450429 PP |
3279 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3280 | ||
28106bc2 SDJ |
3281 | if (!bp_objfile_data->longjmp_searched) |
3282 | { | |
45461e0d SM |
3283 | std::vector<probe *> ret |
3284 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3285 | |
45461e0d | 3286 | if (!ret.empty ()) |
25f9533e SDJ |
3287 | { |
3288 | /* We are only interested in checking one element. */ | |
45461e0d | 3289 | probe *p = ret[0]; |
25f9533e | 3290 | |
935676c9 | 3291 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3292 | { |
3293 | /* We cannot use the probe interface here, because it does | |
3294 | not know how to evaluate arguments. */ | |
45461e0d | 3295 | ret.clear (); |
25f9533e SDJ |
3296 | } |
3297 | } | |
3298 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3299 | bp_objfile_data->longjmp_searched = 1; |
3300 | } | |
3301 | ||
45461e0d | 3302 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3303 | { |
28106bc2 SDJ |
3304 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
3305 | ||
45461e0d | 3306 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3307 | { |
3308 | struct breakpoint *b; | |
3309 | ||
729662a5 | 3310 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3311 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3312 | bp_longjmp_master, |
3313 | &internal_breakpoint_ops); | |
d28cd78a | 3314 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3315 | b->enable_state = bp_disabled; |
3316 | } | |
3317 | ||
3318 | continue; | |
3319 | } | |
3320 | ||
0569175e TSD |
3321 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3322 | continue; | |
3323 | ||
17450429 | 3324 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3325 | { |
3326 | struct breakpoint *b; | |
af02033e | 3327 | const char *func_name; |
17450429 | 3328 | CORE_ADDR addr; |
67994074 | 3329 | struct explicit_location explicit_loc; |
6c95b8df | 3330 | |
3b7344d5 | 3331 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3332 | continue; |
0fd8e87f | 3333 | |
17450429 | 3334 | func_name = longjmp_names[i]; |
3b7344d5 | 3335 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3336 | { |
3b7344d5 | 3337 | struct bound_minimal_symbol m; |
17450429 PP |
3338 | |
3339 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3340 | if (m.minsym == NULL) |
17450429 PP |
3341 | { |
3342 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3343 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3344 | continue; |
3345 | } | |
3346 | bp_objfile_data->longjmp_msym[i] = m; | |
3347 | } | |
3348 | ||
77e371c0 | 3349 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3350 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3351 | &internal_breakpoint_ops); | |
67994074 KS |
3352 | initialize_explicit_location (&explicit_loc); |
3353 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3354 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3355 | b->enable_state = bp_disabled; |
3356 | } | |
0fd8e87f | 3357 | } |
af02033e | 3358 | } |
0fd8e87f UW |
3359 | } |
3360 | ||
af02033e | 3361 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3362 | static void |
af02033e | 3363 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3364 | { |
3365 | struct program_space *pspace; | |
af02033e | 3366 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3367 | |
5ed8105e | 3368 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3369 | |
3370 | ALL_PSPACES (pspace) | |
17450429 PP |
3371 | { |
3372 | struct objfile *objfile; | |
3373 | CORE_ADDR addr; | |
3374 | ||
3375 | set_current_program_space (pspace); | |
3376 | ||
aa7d318d TT |
3377 | ALL_OBJFILES (objfile) |
3378 | { | |
3379 | struct breakpoint *b; | |
17450429 | 3380 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3381 | struct explicit_location explicit_loc; |
aa7d318d | 3382 | |
17450429 | 3383 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3384 | |
3b7344d5 | 3385 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3386 | continue; |
3387 | ||
3b7344d5 | 3388 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3389 | { |
3b7344d5 | 3390 | struct bound_minimal_symbol m; |
17450429 PP |
3391 | |
3392 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3393 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3394 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3395 | { |
3396 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3397 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3398 | continue; |
3399 | } | |
3400 | bp_objfile_data->terminate_msym = m; | |
3401 | } | |
aa7d318d | 3402 | |
77e371c0 | 3403 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3404 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3405 | bp_std_terminate_master, |
3406 | &internal_breakpoint_ops); | |
67994074 KS |
3407 | initialize_explicit_location (&explicit_loc); |
3408 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3409 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3410 | b->enable_state = bp_disabled; |
3411 | } | |
17450429 | 3412 | } |
aa7d318d TT |
3413 | } |
3414 | ||
186c406b TT |
3415 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3416 | ||
70221824 | 3417 | static void |
186c406b TT |
3418 | create_exception_master_breakpoint (void) |
3419 | { | |
3420 | struct objfile *objfile; | |
17450429 | 3421 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3422 | |
3423 | ALL_OBJFILES (objfile) | |
3424 | { | |
17450429 PP |
3425 | struct breakpoint *b; |
3426 | struct gdbarch *gdbarch; | |
3427 | struct breakpoint_objfile_data *bp_objfile_data; | |
3428 | CORE_ADDR addr; | |
67994074 | 3429 | struct explicit_location explicit_loc; |
17450429 PP |
3430 | |
3431 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3432 | ||
28106bc2 SDJ |
3433 | /* We prefer the SystemTap probe point if it exists. */ |
3434 | if (!bp_objfile_data->exception_searched) | |
3435 | { | |
45461e0d SM |
3436 | std::vector<probe *> ret |
3437 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3438 | |
45461e0d | 3439 | if (!ret.empty ()) |
25f9533e SDJ |
3440 | { |
3441 | /* We are only interested in checking one element. */ | |
45461e0d | 3442 | probe *p = ret[0]; |
25f9533e | 3443 | |
935676c9 | 3444 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3445 | { |
3446 | /* We cannot use the probe interface here, because it does | |
3447 | not know how to evaluate arguments. */ | |
45461e0d | 3448 | ret.clear (); |
25f9533e SDJ |
3449 | } |
3450 | } | |
3451 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3452 | bp_objfile_data->exception_searched = 1; |
3453 | } | |
3454 | ||
45461e0d | 3455 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 SDJ |
3456 | { |
3457 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3458 | |
3459 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3460 | { |
3461 | struct breakpoint *b; | |
3462 | ||
729662a5 | 3463 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3464 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3465 | bp_exception_master, |
3466 | &internal_breakpoint_ops); | |
d28cd78a | 3467 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3468 | b->enable_state = bp_disabled; |
3469 | } | |
3470 | ||
3471 | continue; | |
3472 | } | |
3473 | ||
3474 | /* Otherwise, try the hook function. */ | |
3475 | ||
3b7344d5 | 3476 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3477 | continue; |
3478 | ||
3479 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3480 | |
3b7344d5 | 3481 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3482 | { |
3b7344d5 | 3483 | struct bound_minimal_symbol debug_hook; |
186c406b | 3484 | |
17450429 | 3485 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3486 | if (debug_hook.minsym == NULL) |
17450429 | 3487 | { |
3b7344d5 | 3488 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3489 | continue; |
3490 | } | |
3491 | ||
3492 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3493 | } |
17450429 | 3494 | |
77e371c0 | 3495 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3496 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3497 | ¤t_target); | |
06edf0c0 PA |
3498 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3499 | &internal_breakpoint_ops); | |
67994074 KS |
3500 | initialize_explicit_location (&explicit_loc); |
3501 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3502 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3503 | b->enable_state = bp_disabled; |
186c406b | 3504 | } |
186c406b TT |
3505 | } |
3506 | ||
9ef9e6a6 KS |
3507 | /* Does B have a location spec? */ |
3508 | ||
3509 | static int | |
3510 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3511 | { | |
d28cd78a | 3512 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3513 | } |
3514 | ||
c906108c | 3515 | void |
fba45db2 | 3516 | update_breakpoints_after_exec (void) |
c906108c | 3517 | { |
35df4500 | 3518 | struct breakpoint *b, *b_tmp; |
876fa593 | 3519 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3520 | |
25b22b0a PA |
3521 | /* We're about to delete breakpoints from GDB's lists. If the |
3522 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3523 | writing the breakpoints' "shadow contents" back into memory. The | |
3524 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3525 | do that. Instead, the target is responsible from marking | |
3526 | breakpoints out as soon as it detects an exec. We don't do that | |
3527 | here instead, because there may be other attempts to delete | |
3528 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3529 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3530 | if (bploc->pspace == current_program_space) |
3531 | gdb_assert (!bploc->inserted); | |
c906108c | 3532 | |
35df4500 | 3533 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3534 | { |
6c95b8df PA |
3535 | if (b->pspace != current_program_space) |
3536 | continue; | |
3537 | ||
4a64f543 | 3538 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3539 | if (b->type == bp_shlib_event) |
3540 | { | |
3541 | delete_breakpoint (b); | |
3542 | continue; | |
3543 | } | |
c906108c | 3544 | |
4a64f543 | 3545 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3546 | if (b->type == bp_jit_event) |
3547 | { | |
3548 | delete_breakpoint (b); | |
3549 | continue; | |
3550 | } | |
3551 | ||
1900040c | 3552 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3553 | as must overlay event and longjmp master breakpoints. */ |
3554 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3555 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3556 | || b->type == bp_exception_master) | |
c4093a6a JM |
3557 | { |
3558 | delete_breakpoint (b); | |
3559 | continue; | |
3560 | } | |
3561 | ||
4a64f543 | 3562 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3563 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3564 | { |
3565 | delete_breakpoint (b); | |
3566 | continue; | |
3567 | } | |
3568 | ||
7c16b83e PA |
3569 | /* Just like single-step breakpoints. */ |
3570 | if (b->type == bp_single_step) | |
3571 | { | |
3572 | delete_breakpoint (b); | |
3573 | continue; | |
3574 | } | |
3575 | ||
611c83ae PA |
3576 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3577 | after an exec. */ | |
186c406b | 3578 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3579 | || b->type == bp_longjmp_call_dummy |
186c406b | 3580 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3581 | { |
3582 | delete_breakpoint (b); | |
3583 | continue; | |
3584 | } | |
3585 | ||
ce78b96d JB |
3586 | if (b->type == bp_catchpoint) |
3587 | { | |
3588 | /* For now, none of the bp_catchpoint breakpoints need to | |
3589 | do anything at this point. In the future, if some of | |
3590 | the catchpoints need to something, we will need to add | |
3591 | a new method, and call this method from here. */ | |
3592 | continue; | |
3593 | } | |
3594 | ||
c5aa993b JM |
3595 | /* bp_finish is a special case. The only way we ought to be able |
3596 | to see one of these when an exec() has happened, is if the user | |
3597 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3598 | carries them to the call-site of the current callee, by setting | |
3599 | a temporary bp there and resuming. But in this case, the finish | |
3600 | will carry them entirely through the vfork & exec. | |
3601 | ||
3602 | We don't want to allow a bp_finish to remain inserted now. But | |
3603 | we can't safely delete it, 'cause finish_command has a handle to | |
3604 | the bp on a bpstat, and will later want to delete it. There's a | |
3605 | chance (and I've seen it happen) that if we delete the bp_finish | |
3606 | here, that its storage will get reused by the time finish_command | |
3607 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3608 | We really must allow finish_command to delete a bp_finish. | |
3609 | ||
e5dd4106 | 3610 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3611 | it's safe to delete something others may have handles to?" |
3612 | problem, what we'll do here is just uninsert the bp_finish, and | |
3613 | let finish_command delete it. | |
3614 | ||
3615 | (We know the bp_finish is "doomed" in the sense that it's | |
3616 | momentary, and will be deleted as soon as finish_command sees | |
3617 | the inferior stopped. So it doesn't matter that the bp's | |
3618 | address is probably bogus in the new a.out, unlike e.g., the | |
3619 | solib breakpoints.) */ | |
c5aa993b | 3620 | |
c5aa993b JM |
3621 | if (b->type == bp_finish) |
3622 | { | |
3623 | continue; | |
3624 | } | |
3625 | ||
3626 | /* Without a symbolic address, we have little hope of the | |
3627 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3628 | a.out. */ |
9ef9e6a6 | 3629 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3630 | { |
3631 | delete_breakpoint (b); | |
3632 | continue; | |
3633 | } | |
c5aa993b | 3634 | } |
c906108c SS |
3635 | } |
3636 | ||
3637 | int | |
d80ee84f | 3638 | detach_breakpoints (ptid_t ptid) |
c906108c | 3639 | { |
35df4500 | 3640 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3641 | int val = 0; |
2989a365 | 3642 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3643 | struct inferior *inf = current_inferior (); |
c5aa993b | 3644 | |
dfd4cc63 | 3645 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3646 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3647 | |
6c95b8df | 3648 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3649 | inferior_ptid = ptid; |
35df4500 | 3650 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3651 | { |
35df4500 | 3652 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3653 | continue; |
3654 | ||
bd9673a4 PW |
3655 | /* This function must physically remove breakpoints locations |
3656 | from the specified ptid, without modifying the breakpoint | |
3657 | package's state. Locations of type bp_loc_other are only | |
3658 | maintained at GDB side. So, there is no need to remove | |
3659 | these bp_loc_other locations. Moreover, removing these | |
3660 | would modify the breakpoint package's state. */ | |
3661 | if (bl->loc_type == bp_loc_other) | |
3662 | continue; | |
3663 | ||
35df4500 | 3664 | if (bl->inserted) |
b2b6a7da | 3665 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3666 | } |
d03285ec | 3667 | |
3a1bae8e | 3668 | return val; |
c906108c SS |
3669 | } |
3670 | ||
35df4500 | 3671 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3672 | Note that this is used to detach breakpoints from a child fork. |
3673 | When we get here, the child isn't in the inferior list, and neither | |
3674 | do we have objects to represent its address space --- we should | |
35df4500 | 3675 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3676 | |
c906108c | 3677 | static int |
b2b6a7da | 3678 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3679 | { |
3680 | int val; | |
c5aa993b | 3681 | |
35df4500 TJB |
3682 | /* BL is never in moribund_locations by our callers. */ |
3683 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3684 | |
74960c60 VP |
3685 | /* The type of none suggests that owner is actually deleted. |
3686 | This should not ever happen. */ | |
35df4500 | 3687 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3688 | |
35df4500 TJB |
3689 | if (bl->loc_type == bp_loc_software_breakpoint |
3690 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3691 | { |
c02f5703 MS |
3692 | /* "Normal" instruction breakpoint: either the standard |
3693 | trap-instruction bp (bp_breakpoint), or a | |
3694 | bp_hardware_breakpoint. */ | |
3695 | ||
3696 | /* First check to see if we have to handle an overlay. */ | |
3697 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3698 | || bl->section == NULL |
3699 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3700 | { |
3701 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3702 | |
3703 | /* If we're trying to uninsert a memory breakpoint that we | |
3704 | know is set in a dynamic object that is marked | |
3705 | shlib_disabled, then either the dynamic object was | |
3706 | removed with "remove-symbol-file" or with | |
3707 | "nosharedlibrary". In the former case, we don't know | |
3708 | whether another dynamic object might have loaded over the | |
3709 | breakpoint's address -- the user might well let us know | |
3710 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3711 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3712 | list of dynamically loaded objects). If we have the |
3713 | breakpoint's shadow memory, that is, this is a software | |
3714 | breakpoint managed by GDB, check whether the breakpoint | |
3715 | is still inserted in memory, to avoid overwriting wrong | |
3716 | code with stale saved shadow contents. Note that HW | |
3717 | breakpoints don't have shadow memory, as they're | |
3718 | implemented using a mechanism that is not dependent on | |
3719 | being able to modify the target's memory, and as such | |
3720 | they should always be removed. */ | |
3721 | if (bl->shlib_disabled | |
3722 | && bl->target_info.shadow_len != 0 | |
3723 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3724 | val = 0; | |
3725 | else | |
73971819 | 3726 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3727 | } |
c906108c SS |
3728 | else |
3729 | { | |
4a64f543 | 3730 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3731 | Did we set a breakpoint at the LMA? */ |
3732 | if (!overlay_events_enabled) | |
3733 | { | |
3734 | /* Yes -- overlay event support is not active, so we | |
3735 | should have set a breakpoint at the LMA. Remove it. | |
3736 | */ | |
c02f5703 MS |
3737 | /* Ignore any failures: if the LMA is in ROM, we will |
3738 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3739 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3740 | target_remove_hw_breakpoint (bl->gdbarch, | |
3741 | &bl->overlay_target_info); | |
c02f5703 | 3742 | else |
35df4500 | 3743 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3744 | &bl->overlay_target_info, |
3745 | reason); | |
c02f5703 MS |
3746 | } |
3747 | /* Did we set a breakpoint at the VMA? | |
3748 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3749 | if (bl->inserted) |
c906108c | 3750 | { |
c02f5703 MS |
3751 | /* Yes -- remove it. Previously we did not bother to |
3752 | remove the breakpoint if the section had been | |
3753 | unmapped, but let's not rely on that being safe. We | |
3754 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3755 | |
3756 | /* However, we should remove *software* breakpoints only | |
3757 | if the section is still mapped, or else we overwrite | |
3758 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3759 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3760 | || section_is_mapped (bl->section)) | |
73971819 | 3761 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3762 | else |
3763 | val = 0; | |
c906108c | 3764 | } |
c02f5703 MS |
3765 | else |
3766 | { | |
3767 | /* No -- not inserted, so no need to remove. No error. */ | |
3768 | val = 0; | |
3769 | } | |
c906108c | 3770 | } |
879d1e6b | 3771 | |
08351840 PA |
3772 | /* In some cases, we might not be able to remove a breakpoint in |
3773 | a shared library that has already been removed, but we have | |
3774 | not yet processed the shlib unload event. Similarly for an | |
3775 | unloaded add-symbol-file object - the user might not yet have | |
3776 | had the chance to remove-symbol-file it. shlib_disabled will | |
3777 | be set if the library/object has already been removed, but | |
3778 | the breakpoint hasn't been uninserted yet, e.g., after | |
3779 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3780 | always-inserted mode. */ | |
076855f9 | 3781 | if (val |
08351840 PA |
3782 | && (bl->loc_type == bp_loc_software_breakpoint |
3783 | && (bl->shlib_disabled | |
3784 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3785 | || shared_objfile_contains_address_p (bl->pspace, |
3786 | bl->address)))) | |
879d1e6b UW |
3787 | val = 0; |
3788 | ||
c906108c SS |
3789 | if (val) |
3790 | return val; | |
b2b6a7da | 3791 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3792 | } |
35df4500 | 3793 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3794 | { |
77b06cd7 TJB |
3795 | gdb_assert (bl->owner->ops != NULL |
3796 | && bl->owner->ops->remove_location != NULL); | |
3797 | ||
b2b6a7da | 3798 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3799 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3800 | |
c906108c | 3801 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3802 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3803 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3804 | bl->owner->number); |
c906108c | 3805 | } |
35df4500 TJB |
3806 | else if (bl->owner->type == bp_catchpoint |
3807 | && breakpoint_enabled (bl->owner) | |
3808 | && !bl->duplicate) | |
ce78b96d | 3809 | { |
77b06cd7 TJB |
3810 | gdb_assert (bl->owner->ops != NULL |
3811 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3812 | |
73971819 | 3813 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3814 | if (val) |
3815 | return val; | |
77b06cd7 | 3816 | |
b2b6a7da | 3817 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3818 | } |
c906108c SS |
3819 | |
3820 | return 0; | |
3821 | } | |
3822 | ||
6c95b8df | 3823 | static int |
834c0d03 | 3824 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3825 | { |
35df4500 TJB |
3826 | /* BL is never in moribund_locations by our callers. */ |
3827 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3828 | |
6c95b8df PA |
3829 | /* The type of none suggests that owner is actually deleted. |
3830 | This should not ever happen. */ | |
35df4500 | 3831 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3832 | |
5ed8105e | 3833 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3834 | |
35df4500 | 3835 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3836 | |
5ed8105e | 3837 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3838 | } |
3839 | ||
c906108c SS |
3840 | /* Clear the "inserted" flag in all breakpoints. */ |
3841 | ||
25b22b0a | 3842 | void |
fba45db2 | 3843 | mark_breakpoints_out (void) |
c906108c | 3844 | { |
35df4500 | 3845 | struct bp_location *bl, **blp_tmp; |
c906108c | 3846 | |
35df4500 | 3847 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3848 | if (bl->pspace == current_program_space) |
35df4500 | 3849 | bl->inserted = 0; |
c906108c SS |
3850 | } |
3851 | ||
53a5351d JM |
3852 | /* Clear the "inserted" flag in all breakpoints and delete any |
3853 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3854 | |
3855 | Plus other such housekeeping that has to be done for breakpoints | |
3856 | between runs. | |
3857 | ||
53a5351d JM |
3858 | Note: this function gets called at the end of a run (by |
3859 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3860 | init_wait_for_inferior). */ |
c906108c SS |
3861 | |
3862 | ||
3863 | ||
3864 | void | |
fba45db2 | 3865 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3866 | { |
35df4500 | 3867 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3868 | struct bp_location *bl; |
1c5cfe86 | 3869 | int ix; |
6c95b8df | 3870 | struct program_space *pspace = current_program_space; |
c906108c | 3871 | |
50c71eaf PA |
3872 | /* If breakpoint locations are shared across processes, then there's |
3873 | nothing to do. */ | |
f5656ead | 3874 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3875 | return; |
3876 | ||
1a853c52 | 3877 | mark_breakpoints_out (); |
075f6582 | 3878 | |
35df4500 | 3879 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3880 | { |
6c95b8df PA |
3881 | if (b->loc && b->loc->pspace != pspace) |
3882 | continue; | |
3883 | ||
c5aa993b JM |
3884 | switch (b->type) |
3885 | { | |
3886 | case bp_call_dummy: | |
e2e4d78b | 3887 | case bp_longjmp_call_dummy: |
c906108c | 3888 | |
c5aa993b | 3889 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3890 | cause problems when the inferior is rerun, so we better get |
3891 | rid of it. */ | |
3892 | ||
3893 | case bp_watchpoint_scope: | |
3894 | ||
3895 | /* Also get rid of scope breakpoints. */ | |
3896 | ||
3897 | case bp_shlib_event: | |
3898 | ||
3899 | /* Also remove solib event breakpoints. Their addresses may | |
3900 | have changed since the last time we ran the program. | |
3901 | Actually we may now be debugging against different target; | |
3902 | and so the solib backend that installed this breakpoint may | |
3903 | not be used in by the target. E.g., | |
3904 | ||
3905 | (gdb) file prog-linux | |
3906 | (gdb) run # native linux target | |
3907 | ... | |
3908 | (gdb) kill | |
3909 | (gdb) file prog-win.exe | |
3910 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3911 | */ | |
c906108c | 3912 | |
f59f708a PA |
3913 | case bp_step_resume: |
3914 | ||
3915 | /* Also remove step-resume breakpoints. */ | |
3916 | ||
7c16b83e PA |
3917 | case bp_single_step: |
3918 | ||
3919 | /* Also remove single-step breakpoints. */ | |
3920 | ||
c5aa993b JM |
3921 | delete_breakpoint (b); |
3922 | break; | |
c906108c | 3923 | |
c5aa993b JM |
3924 | case bp_watchpoint: |
3925 | case bp_hardware_watchpoint: | |
3926 | case bp_read_watchpoint: | |
3927 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3928 | { |
3929 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3930 | |
3a5c3e22 PA |
3931 | /* Likewise for watchpoints on local expressions. */ |
3932 | if (w->exp_valid_block != NULL) | |
3933 | delete_breakpoint (b); | |
63000888 | 3934 | else |
3a5c3e22 | 3935 | { |
63000888 PA |
3936 | /* Get rid of existing locations, which are no longer |
3937 | valid. New ones will be created in | |
3938 | update_watchpoint, when the inferior is restarted. | |
3939 | The next update_global_location_list call will | |
3940 | garbage collect them. */ | |
3941 | b->loc = NULL; | |
3942 | ||
3943 | if (context == inf_starting) | |
3944 | { | |
3945 | /* Reset val field to force reread of starting value in | |
3946 | insert_breakpoints. */ | |
850645cf | 3947 | w->val.reset (nullptr); |
63000888 PA |
3948 | w->val_valid = 0; |
3949 | } | |
3950 | } | |
3a5c3e22 | 3951 | } |
c5aa993b JM |
3952 | break; |
3953 | default: | |
c5aa993b JM |
3954 | break; |
3955 | } | |
3956 | } | |
1c5cfe86 PA |
3957 | |
3958 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3959 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3960 | decref_bp_location (&bl); | |
1c5cfe86 | 3961 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3962 | } |
3963 | ||
6c95b8df PA |
3964 | /* These functions concern about actual breakpoints inserted in the |
3965 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3966 | we need to hop over the bkpt --- so we check for address space | |
3967 | match, not program space. */ | |
3968 | ||
c2c6d25f JM |
3969 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3970 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3971 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3972 | permanent breakpoint. | |
3973 | - When continuing from a location with an ordinary breakpoint, we | |
3974 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3975 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3976 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3977 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3978 | |
c2c6d25f | 3979 | enum breakpoint_here |
accd0bcd | 3980 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3981 | { |
35df4500 | 3982 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3983 | int any_breakpoint_here = 0; |
c906108c | 3984 | |
35df4500 | 3985 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3986 | { |
35df4500 TJB |
3987 | if (bl->loc_type != bp_loc_software_breakpoint |
3988 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3989 | continue; |
3990 | ||
f1310107 | 3991 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3992 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3993 | || bl->permanent) |
f1310107 | 3994 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3995 | { |
3996 | if (overlay_debugging | |
35df4500 TJB |
3997 | && section_is_overlay (bl->section) |
3998 | && !section_is_mapped (bl->section)) | |
075f6582 | 3999 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4000 | else if (bl->permanent) |
075f6582 DJ |
4001 | return permanent_breakpoint_here; |
4002 | else | |
4003 | any_breakpoint_here = 1; | |
4004 | } | |
4005 | } | |
c906108c | 4006 | |
f486487f | 4007 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4008 | } |
4009 | ||
d35ae833 PA |
4010 | /* See breakpoint.h. */ |
4011 | ||
4012 | int | |
accd0bcd | 4013 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4014 | CORE_ADDR addr, ULONGEST len) |
4015 | { | |
4016 | struct bp_location *bl, **blp_tmp; | |
4017 | ||
4018 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4019 | { | |
4020 | if (bl->loc_type != bp_loc_software_breakpoint | |
4021 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4022 | continue; | |
4023 | ||
4024 | if ((breakpoint_enabled (bl->owner) | |
4025 | || bl->permanent) | |
4026 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4027 | addr, len)) | |
4028 | { | |
4029 | if (overlay_debugging | |
4030 | && section_is_overlay (bl->section) | |
4031 | && !section_is_mapped (bl->section)) | |
4032 | { | |
4033 | /* Unmapped overlay -- can't be a match. */ | |
4034 | continue; | |
4035 | } | |
4036 | ||
4037 | return 1; | |
4038 | } | |
4039 | } | |
4040 | ||
4041 | return 0; | |
4042 | } | |
4043 | ||
1c5cfe86 PA |
4044 | /* Return true if there's a moribund breakpoint at PC. */ |
4045 | ||
4046 | int | |
accd0bcd | 4047 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4048 | { |
4049 | struct bp_location *loc; | |
4050 | int ix; | |
4051 | ||
4052 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4053 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4054 | return 1; |
4055 | ||
4056 | return 0; | |
4057 | } | |
c2c6d25f | 4058 | |
f7ce857f PA |
4059 | /* Returns non-zero iff BL is inserted at PC, in address space |
4060 | ASPACE. */ | |
4061 | ||
4062 | static int | |
4063 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4064 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4065 | { |
4066 | if (bl->inserted | |
4067 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4068 | aspace, pc)) | |
4069 | { | |
4070 | if (overlay_debugging | |
4071 | && section_is_overlay (bl->section) | |
4072 | && !section_is_mapped (bl->section)) | |
4073 | return 0; /* unmapped overlay -- can't be a match */ | |
4074 | else | |
4075 | return 1; | |
4076 | } | |
4077 | return 0; | |
4078 | } | |
4079 | ||
a1fd2fa5 | 4080 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4081 | |
4082 | int | |
accd0bcd | 4083 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4084 | { |
f7ce857f | 4085 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4086 | |
f7ce857f | 4087 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4088 | { |
f7ce857f PA |
4089 | struct bp_location *bl = *blp; |
4090 | ||
35df4500 TJB |
4091 | if (bl->loc_type != bp_loc_software_breakpoint |
4092 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4093 | continue; |
4094 | ||
f7ce857f PA |
4095 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4096 | return 1; | |
c5aa993b | 4097 | } |
c36b740a VP |
4098 | return 0; |
4099 | } | |
4100 | ||
a1fd2fa5 PA |
4101 | /* This function returns non-zero iff there is a software breakpoint |
4102 | inserted at PC. */ | |
c36b740a VP |
4103 | |
4104 | int | |
accd0bcd | 4105 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4106 | CORE_ADDR pc) |
4fa8626c | 4107 | { |
f7ce857f | 4108 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4109 | |
f7ce857f | 4110 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4111 | { |
f7ce857f PA |
4112 | struct bp_location *bl = *blp; |
4113 | ||
35df4500 | 4114 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4115 | continue; |
4116 | ||
f7ce857f PA |
4117 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4118 | return 1; | |
4fa8626c DJ |
4119 | } |
4120 | ||
4121 | return 0; | |
9c02b525 PA |
4122 | } |
4123 | ||
4124 | /* See breakpoint.h. */ | |
4125 | ||
4126 | int | |
accd0bcd | 4127 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4128 | CORE_ADDR pc) |
4129 | { | |
4130 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4131 | |
4132 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4133 | { | |
4134 | struct bp_location *bl = *blp; | |
4135 | ||
4136 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4137 | continue; | |
4138 | ||
4139 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4140 | return 1; | |
4141 | } | |
4142 | ||
4143 | return 0; | |
4fa8626c DJ |
4144 | } |
4145 | ||
9093389c | 4146 | int |
accd0bcd | 4147 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4148 | CORE_ADDR addr, ULONGEST len) |
4149 | { | |
4150 | struct breakpoint *bpt; | |
4151 | ||
4152 | ALL_BREAKPOINTS (bpt) | |
4153 | { | |
4154 | struct bp_location *loc; | |
4155 | ||
4156 | if (bpt->type != bp_hardware_watchpoint | |
4157 | && bpt->type != bp_access_watchpoint) | |
4158 | continue; | |
4159 | ||
4160 | if (!breakpoint_enabled (bpt)) | |
4161 | continue; | |
4162 | ||
4163 | for (loc = bpt->loc; loc; loc = loc->next) | |
4164 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4165 | { | |
4166 | CORE_ADDR l, h; | |
4167 | ||
4168 | /* Check for intersection. */ | |
768adc05 PA |
4169 | l = std::max<CORE_ADDR> (loc->address, addr); |
4170 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4171 | if (l < h) |
4172 | return 1; | |
4173 | } | |
4174 | } | |
4175 | return 0; | |
4176 | } | |
c906108c | 4177 | \f |
c5aa993b | 4178 | |
c906108c SS |
4179 | /* bpstat stuff. External routines' interfaces are documented |
4180 | in breakpoint.h. */ | |
4181 | ||
4182 | int | |
c326b90e | 4183 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4184 | { |
533be4dd | 4185 | return (ep->type == bp_catchpoint); |
c906108c SS |
4186 | } |
4187 | ||
f431efe5 PA |
4188 | /* Frees any storage that is part of a bpstat. Does not walk the |
4189 | 'next' chain. */ | |
4190 | ||
04afa70c | 4191 | bpstats::~bpstats () |
198757a8 | 4192 | { |
04afa70c TT |
4193 | if (bp_location_at != NULL) |
4194 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4195 | } |
4196 | ||
c906108c SS |
4197 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4198 | Also free any storage that is part of a bpstat. */ | |
4199 | ||
4200 | void | |
fba45db2 | 4201 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4202 | { |
4203 | bpstat p; | |
4204 | bpstat q; | |
4205 | ||
4206 | if (bsp == 0) | |
4207 | return; | |
4208 | p = *bsp; | |
4209 | while (p != NULL) | |
4210 | { | |
4211 | q = p->next; | |
04afa70c | 4212 | delete p; |
c906108c SS |
4213 | p = q; |
4214 | } | |
4215 | *bsp = NULL; | |
4216 | } | |
4217 | ||
04afa70c TT |
4218 | bpstats::bpstats (const bpstats &other) |
4219 | : next (NULL), | |
4220 | bp_location_at (other.bp_location_at), | |
4221 | breakpoint_at (other.breakpoint_at), | |
4222 | commands (other.commands), | |
04afa70c TT |
4223 | print (other.print), |
4224 | stop (other.stop), | |
4225 | print_it (other.print_it) | |
4226 | { | |
850645cf TT |
4227 | if (other.old_val != NULL) |
4228 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4229 | incref_bp_location (bp_location_at); |
04afa70c TT |
4230 | } |
4231 | ||
c906108c SS |
4232 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4233 | is part of the bpstat is copied as well. */ | |
4234 | ||
4235 | bpstat | |
fba45db2 | 4236 | bpstat_copy (bpstat bs) |
c906108c SS |
4237 | { |
4238 | bpstat p = NULL; | |
4239 | bpstat tmp; | |
4240 | bpstat retval = NULL; | |
4241 | ||
4242 | if (bs == NULL) | |
4243 | return bs; | |
4244 | ||
4245 | for (; bs != NULL; bs = bs->next) | |
4246 | { | |
04afa70c | 4247 | tmp = new bpstats (*bs); |
31cc81e9 | 4248 | |
c906108c SS |
4249 | if (p == NULL) |
4250 | /* This is the first thing in the chain. */ | |
4251 | retval = tmp; | |
4252 | else | |
4253 | p->next = tmp; | |
4254 | p = tmp; | |
4255 | } | |
4256 | p->next = NULL; | |
4257 | return retval; | |
4258 | } | |
4259 | ||
4a64f543 | 4260 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4261 | |
4262 | bpstat | |
fba45db2 | 4263 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4264 | { |
c5aa993b JM |
4265 | if (bsp == NULL) |
4266 | return NULL; | |
c906108c | 4267 | |
c5aa993b JM |
4268 | for (; bsp != NULL; bsp = bsp->next) |
4269 | { | |
f431efe5 | 4270 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4271 | return bsp; |
4272 | } | |
c906108c SS |
4273 | return NULL; |
4274 | } | |
4275 | ||
ab04a2af TT |
4276 | /* See breakpoint.h. */ |
4277 | ||
47591c29 | 4278 | int |
427cd150 | 4279 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4280 | { |
ab04a2af TT |
4281 | for (; bsp != NULL; bsp = bsp->next) |
4282 | { | |
427cd150 TT |
4283 | if (bsp->breakpoint_at == NULL) |
4284 | { | |
4285 | /* A moribund location can never explain a signal other than | |
4286 | GDB_SIGNAL_TRAP. */ | |
4287 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4288 | return 1; |
427cd150 TT |
4289 | } |
4290 | else | |
47591c29 PA |
4291 | { |
4292 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4293 | sig)) | |
4294 | return 1; | |
4295 | } | |
ab04a2af TT |
4296 | } |
4297 | ||
47591c29 | 4298 | return 0; |
ab04a2af TT |
4299 | } |
4300 | ||
4a64f543 MS |
4301 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4302 | stopped at. *BSP upon return is a bpstat which points to the | |
4303 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4304 | good for anything but further calls to bpstat_num). | |
4305 | ||
8671a17b PA |
4306 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4307 | Return -1 if stopped at a breakpoint that has been deleted since | |
4308 | we set it. | |
4309 | Return 1 otherwise. */ | |
c906108c SS |
4310 | |
4311 | int | |
8671a17b | 4312 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4313 | { |
4314 | struct breakpoint *b; | |
4315 | ||
4316 | if ((*bsp) == NULL) | |
4317 | return 0; /* No more breakpoint values */ | |
8671a17b | 4318 | |
4a64f543 MS |
4319 | /* We assume we'll never have several bpstats that correspond to a |
4320 | single breakpoint -- otherwise, this function might return the | |
4321 | same number more than once and this will look ugly. */ | |
f431efe5 | 4322 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4323 | *bsp = (*bsp)->next; |
4324 | if (b == NULL) | |
4325 | return -1; /* breakpoint that's been deleted since */ | |
4326 | ||
4327 | *num = b->number; /* We have its number */ | |
4328 | return 1; | |
c906108c SS |
4329 | } |
4330 | ||
e93ca019 | 4331 | /* See breakpoint.h. */ |
c906108c SS |
4332 | |
4333 | void | |
e93ca019 | 4334 | bpstat_clear_actions (void) |
c906108c | 4335 | { |
e93ca019 JK |
4336 | struct thread_info *tp; |
4337 | bpstat bs; | |
4338 | ||
4339 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4340 | return; | |
4341 | ||
4342 | tp = find_thread_ptid (inferior_ptid); | |
4343 | if (tp == NULL) | |
4344 | return; | |
4345 | ||
4346 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4347 | { |
d1b0a7bf | 4348 | bs->commands = NULL; |
850645cf | 4349 | bs->old_val.reset (nullptr); |
c906108c SS |
4350 | } |
4351 | } | |
4352 | ||
f3b1572e PA |
4353 | /* Called when a command is about to proceed the inferior. */ |
4354 | ||
4355 | static void | |
4356 | breakpoint_about_to_proceed (void) | |
4357 | { | |
4358 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4359 | { | |
4360 | struct thread_info *tp = inferior_thread (); | |
4361 | ||
4362 | /* Allow inferior function calls in breakpoint commands to not | |
4363 | interrupt the command list. When the call finishes | |
4364 | successfully, the inferior will be standing at the same | |
4365 | breakpoint as if nothing happened. */ | |
16c381f0 | 4366 | if (tp->control.in_infcall) |
f3b1572e PA |
4367 | return; |
4368 | } | |
4369 | ||
4370 | breakpoint_proceeded = 1; | |
4371 | } | |
4372 | ||
abf85f46 JK |
4373 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4374 | or its equivalent. */ | |
4375 | ||
4376 | static int | |
4377 | command_line_is_silent (struct command_line *cmd) | |
4378 | { | |
4f45d445 | 4379 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4380 | } |
4381 | ||
4a64f543 MS |
4382 | /* Execute all the commands associated with all the breakpoints at |
4383 | this location. Any of these commands could cause the process to | |
4384 | proceed beyond this point, etc. We look out for such changes by | |
4385 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4386 | |
347bddb7 PA |
4387 | Returns true if a breakpoint command resumed the inferior. In that |
4388 | case, it is the caller's responsibility to recall it again with the | |
4389 | bpstat of the current thread. */ | |
4390 | ||
4391 | static int | |
4392 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4393 | { |
4394 | bpstat bs; | |
347bddb7 | 4395 | int again = 0; |
c906108c SS |
4396 | |
4397 | /* Avoid endless recursion if a `source' command is contained | |
4398 | in bs->commands. */ | |
4399 | if (executing_breakpoint_commands) | |
347bddb7 | 4400 | return 0; |
c906108c | 4401 | |
81b1e71c TT |
4402 | scoped_restore save_executing |
4403 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4404 | |
1ac32117 | 4405 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4406 | |
4a64f543 | 4407 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4408 | bs = *bsp; |
4409 | ||
4410 | breakpoint_proceeded = 0; | |
4411 | for (; bs != NULL; bs = bs->next) | |
4412 | { | |
d1b0a7bf | 4413 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4414 | |
4415 | /* Take ownership of the BSP's command tree, if it has one. | |
4416 | ||
4417 | The command tree could legitimately contain commands like | |
4418 | 'step' and 'next', which call clear_proceed_status, which | |
4419 | frees stop_bpstat's command tree. To make sure this doesn't | |
4420 | free the tree we're executing out from under us, we need to | |
4421 | take ownership of the tree ourselves. Since a given bpstat's | |
4422 | commands are only executed once, we don't need to copy it; we | |
4423 | can clear the pointer in the bpstat, and make sure we free | |
4424 | the tree when we're done. */ | |
d1b0a7bf | 4425 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4426 | bs->commands = NULL; |
d1b0a7bf TT |
4427 | if (ccmd != NULL) |
4428 | cmd = ccmd.get (); | |
abf85f46 JK |
4429 | if (command_line_is_silent (cmd)) |
4430 | { | |
4431 | /* The action has been already done by bpstat_stop_status. */ | |
4432 | cmd = cmd->next; | |
4433 | } | |
6c50ab1c | 4434 | |
c906108c SS |
4435 | while (cmd != NULL) |
4436 | { | |
4437 | execute_control_command (cmd); | |
4438 | ||
4439 | if (breakpoint_proceeded) | |
4440 | break; | |
4441 | else | |
4442 | cmd = cmd->next; | |
4443 | } | |
6c50ab1c | 4444 | |
c906108c | 4445 | if (breakpoint_proceeded) |
32c1e744 | 4446 | { |
cb814510 | 4447 | if (current_ui->async) |
347bddb7 PA |
4448 | /* If we are in async mode, then the target might be still |
4449 | running, not stopped at any breakpoint, so nothing for | |
4450 | us to do here -- just return to the event loop. */ | |
4451 | ; | |
32c1e744 VP |
4452 | else |
4453 | /* In sync mode, when execute_control_command returns | |
4454 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4455 | Breakpoint commands for that stop were not run, since |
4456 | execute_command does not run breakpoint commands -- | |
4457 | only command_line_handler does, but that one is not | |
4458 | involved in execution of breakpoint commands. So, we | |
4459 | can now execute breakpoint commands. It should be | |
4460 | noted that making execute_command do bpstat actions is | |
4461 | not an option -- in this case we'll have recursive | |
4462 | invocation of bpstat for each breakpoint with a | |
4463 | command, and can easily blow up GDB stack. Instead, we | |
4464 | return true, which will trigger the caller to recall us | |
4465 | with the new stop_bpstat. */ | |
4466 | again = 1; | |
4467 | break; | |
32c1e744 | 4468 | } |
c906108c | 4469 | } |
347bddb7 PA |
4470 | return again; |
4471 | } | |
4472 | ||
4473 | void | |
4474 | bpstat_do_actions (void) | |
4475 | { | |
353d1d73 JK |
4476 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4477 | ||
347bddb7 PA |
4478 | /* Do any commands attached to breakpoint we are stopped at. */ |
4479 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4480 | && target_has_execution | |
4481 | && !is_exited (inferior_ptid) | |
4482 | && !is_executing (inferior_ptid)) | |
4483 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4484 | and only return when it is stopped at the next breakpoint, we | |
4485 | keep doing breakpoint actions until it returns false to | |
4486 | indicate the inferior was not resumed. */ | |
16c381f0 | 4487 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4488 | break; |
353d1d73 JK |
4489 | |
4490 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4491 | } |
4492 | ||
fa4727a6 DJ |
4493 | /* Print out the (old or new) value associated with a watchpoint. */ |
4494 | ||
4495 | static void | |
4496 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4497 | { | |
4498 | if (val == NULL) | |
4499 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4500 | else | |
79a45b7d TT |
4501 | { |
4502 | struct value_print_options opts; | |
4503 | get_user_print_options (&opts); | |
4504 | value_print (val, stream, &opts); | |
4505 | } | |
fa4727a6 DJ |
4506 | } |
4507 | ||
f303dbd6 PA |
4508 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4509 | debugging multiple threads. */ | |
4510 | ||
4511 | void | |
4512 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4513 | { | |
112e8700 | 4514 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4515 | return; |
4516 | ||
112e8700 | 4517 | uiout->text ("\n"); |
f303dbd6 PA |
4518 | |
4519 | if (show_thread_that_caused_stop ()) | |
4520 | { | |
4521 | const char *name; | |
4522 | struct thread_info *thr = inferior_thread (); | |
4523 | ||
112e8700 SM |
4524 | uiout->text ("Thread "); |
4525 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4526 | |
4527 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4528 | if (name != NULL) | |
4529 | { | |
112e8700 SM |
4530 | uiout->text (" \""); |
4531 | uiout->field_fmt ("name", "%s", name); | |
4532 | uiout->text ("\""); | |
f303dbd6 PA |
4533 | } |
4534 | ||
112e8700 | 4535 | uiout->text (" hit "); |
f303dbd6 PA |
4536 | } |
4537 | } | |
4538 | ||
e514a9d6 | 4539 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4540 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4541 | 'print_it' in the bpstat structure. Under some circumstances we |
4542 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4543 | normal_stop(). */ |
e514a9d6 JM |
4544 | |
4545 | static enum print_stop_action | |
4546 | print_bp_stop_message (bpstat bs) | |
4547 | { | |
4548 | switch (bs->print_it) | |
4549 | { | |
4550 | case print_it_noop: | |
4a64f543 | 4551 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4552 | return PRINT_UNKNOWN; |
4553 | break; | |
4554 | ||
4555 | case print_it_done: | |
4556 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4557 | relevant messages. */ |
e514a9d6 JM |
4558 | return PRINT_SRC_AND_LOC; |
4559 | break; | |
4560 | ||
4561 | case print_it_normal: | |
4f8d1dc6 | 4562 | { |
f431efe5 PA |
4563 | struct breakpoint *b = bs->breakpoint_at; |
4564 | ||
1a6a67de TJB |
4565 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4566 | which has since been deleted. */ | |
4567 | if (b == NULL) | |
4568 | return PRINT_UNKNOWN; | |
4569 | ||
348d480f PA |
4570 | /* Normal case. Call the breakpoint's print_it method. */ |
4571 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4572 | } |
348d480f | 4573 | break; |
3086aeae | 4574 | |
e514a9d6 | 4575 | default: |
8e65ff28 | 4576 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4577 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4578 | break; |
c906108c | 4579 | } |
c906108c SS |
4580 | } |
4581 | ||
edcc5120 TT |
4582 | /* A helper function that prints a shared library stopped event. */ |
4583 | ||
4584 | static void | |
4585 | print_solib_event (int is_catchpoint) | |
4586 | { | |
6fb16ce6 | 4587 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
edcc5120 TT |
4588 | int any_added |
4589 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4590 | ||
4591 | if (!is_catchpoint) | |
4592 | { | |
4593 | if (any_added || any_deleted) | |
112e8700 | 4594 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4595 | else |
112e8700 SM |
4596 | current_uiout->text (_("Stopped due to shared library event (no " |
4597 | "libraries added or removed)\n")); | |
edcc5120 TT |
4598 | } |
4599 | ||
112e8700 SM |
4600 | if (current_uiout->is_mi_like_p ()) |
4601 | current_uiout->field_string ("reason", | |
4602 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4603 | |
4604 | if (any_deleted) | |
4605 | { | |
112e8700 | 4606 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4607 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4608 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4609 | { |
6fb16ce6 SM |
4610 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4611 | ||
edcc5120 | 4612 | if (ix > 0) |
112e8700 SM |
4613 | current_uiout->text (" "); |
4614 | current_uiout->field_string ("library", name); | |
4615 | current_uiout->text ("\n"); | |
edcc5120 | 4616 | } |
edcc5120 TT |
4617 | } |
4618 | ||
4619 | if (any_added) | |
4620 | { | |
4621 | struct so_list *iter; | |
4622 | int ix; | |
edcc5120 | 4623 | |
112e8700 | 4624 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4625 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4626 | for (ix = 0; |
4627 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4628 | ix, iter); | |
4629 | ++ix) | |
4630 | { | |
4631 | if (ix > 0) | |
112e8700 SM |
4632 | current_uiout->text (" "); |
4633 | current_uiout->field_string ("library", iter->so_name); | |
4634 | current_uiout->text ("\n"); | |
edcc5120 | 4635 | } |
edcc5120 TT |
4636 | } |
4637 | } | |
4638 | ||
e514a9d6 JM |
4639 | /* Print a message indicating what happened. This is called from |
4640 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4641 | list - a list of the eventpoints that caused this stop. KIND is |
4642 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4643 | routine calls the generic print routine for printing a message |
4644 | about reasons for stopping. This will print (for example) the | |
4645 | "Breakpoint n," part of the output. The return value of this | |
4646 | routine is one of: | |
c906108c | 4647 | |
4a64f543 | 4648 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4649 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4650 | code to print the location. An example is |
c5aa993b JM |
4651 | "Breakpoint 1, " which should be followed by |
4652 | the location. | |
917317f4 | 4653 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4654 | to also print the location part of the message. |
4655 | An example is the catch/throw messages, which | |
4a64f543 | 4656 | don't require a location appended to the end. |
917317f4 | 4657 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4658 | further info to be printed. */ |
c906108c | 4659 | |
917317f4 | 4660 | enum print_stop_action |
36dfb11c | 4661 | bpstat_print (bpstat bs, int kind) |
c906108c | 4662 | { |
f486487f | 4663 | enum print_stop_action val; |
c5aa993b | 4664 | |
c906108c | 4665 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4666 | (Currently all watchpoints go on the bpstat whether hit or not. |
4667 | That probably could (should) be changed, provided care is taken | |
c906108c | 4668 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4669 | for (; bs; bs = bs->next) |
4670 | { | |
4671 | val = print_bp_stop_message (bs); | |
4672 | if (val == PRINT_SRC_ONLY | |
4673 | || val == PRINT_SRC_AND_LOC | |
4674 | || val == PRINT_NOTHING) | |
4675 | return val; | |
4676 | } | |
c906108c | 4677 | |
36dfb11c TT |
4678 | /* If we had hit a shared library event breakpoint, |
4679 | print_bp_stop_message would print out this message. If we hit an | |
4680 | OS-level shared library event, do the same thing. */ | |
4681 | if (kind == TARGET_WAITKIND_LOADED) | |
4682 | { | |
edcc5120 | 4683 | print_solib_event (0); |
36dfb11c TT |
4684 | return PRINT_NOTHING; |
4685 | } | |
4686 | ||
e514a9d6 | 4687 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4688 | with and nothing was printed. */ |
917317f4 | 4689 | return PRINT_UNKNOWN; |
c906108c SS |
4690 | } |
4691 | ||
bf469271 | 4692 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4693 | |
bf469271 PA |
4694 | static bool |
4695 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4696 | { |
278cd55f | 4697 | struct value *mark = value_mark (); |
bf469271 | 4698 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4699 | |
c906108c | 4700 | value_free_to_mark (mark); |
bf469271 | 4701 | return res; |
c906108c SS |
4702 | } |
4703 | ||
5760d0ab | 4704 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4705 | |
04afa70c TT |
4706 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4707 | : next (NULL), | |
4708 | bp_location_at (bl), | |
4709 | breakpoint_at (bl->owner), | |
4710 | commands (NULL), | |
04afa70c TT |
4711 | print (0), |
4712 | stop (0), | |
4713 | print_it (print_it_normal) | |
c906108c | 4714 | { |
f431efe5 | 4715 | incref_bp_location (bl); |
04afa70c TT |
4716 | **bs_link_pointer = this; |
4717 | *bs_link_pointer = &next; | |
4718 | } | |
4719 | ||
4720 | bpstats::bpstats () | |
4721 | : next (NULL), | |
4722 | bp_location_at (NULL), | |
4723 | breakpoint_at (NULL), | |
4724 | commands (NULL), | |
04afa70c TT |
4725 | print (0), |
4726 | stop (0), | |
4727 | print_it (print_it_normal) | |
4728 | { | |
c906108c SS |
4729 | } |
4730 | \f | |
d983da9c DJ |
4731 | /* The target has stopped with waitstatus WS. Check if any hardware |
4732 | watchpoints have triggered, according to the target. */ | |
4733 | ||
4734 | int | |
4735 | watchpoints_triggered (struct target_waitstatus *ws) | |
4736 | { | |
d92524f1 | 4737 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4738 | CORE_ADDR addr; |
4739 | struct breakpoint *b; | |
4740 | ||
4741 | if (!stopped_by_watchpoint) | |
4742 | { | |
4743 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4744 | as not triggered. */ | |
4745 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4746 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4747 | { |
4748 | struct watchpoint *w = (struct watchpoint *) b; | |
4749 | ||
4750 | w->watchpoint_triggered = watch_triggered_no; | |
4751 | } | |
d983da9c DJ |
4752 | |
4753 | return 0; | |
4754 | } | |
4755 | ||
4756 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4757 | { | |
4758 | /* We were stopped by a watchpoint, but we don't know where. | |
4759 | Mark all watchpoints as unknown. */ | |
4760 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4761 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4762 | { |
4763 | struct watchpoint *w = (struct watchpoint *) b; | |
4764 | ||
4765 | w->watchpoint_triggered = watch_triggered_unknown; | |
4766 | } | |
d983da9c | 4767 | |
3c4797ba | 4768 | return 1; |
d983da9c DJ |
4769 | } |
4770 | ||
4771 | /* The target could report the data address. Mark watchpoints | |
4772 | affected by this data address as triggered, and all others as not | |
4773 | triggered. */ | |
4774 | ||
4775 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4776 | if (is_hardware_watchpoint (b)) |
d983da9c | 4777 | { |
3a5c3e22 | 4778 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4779 | struct bp_location *loc; |
d983da9c | 4780 | |
3a5c3e22 | 4781 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4782 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4783 | { |
3a5c3e22 | 4784 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4785 | { |
3a5c3e22 PA |
4786 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4787 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4788 | |
4789 | if (newaddr == start) | |
4790 | { | |
3a5c3e22 | 4791 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4792 | break; |
4793 | } | |
4794 | } | |
4795 | /* Exact match not required. Within range is sufficient. */ | |
4796 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4797 | addr, loc->address, | |
4798 | loc->length)) | |
4799 | { | |
3a5c3e22 | 4800 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4801 | break; |
4802 | } | |
4803 | } | |
d983da9c DJ |
4804 | } |
4805 | ||
4806 | return 1; | |
4807 | } | |
4808 | ||
bf469271 PA |
4809 | /* Possible return values for watchpoint_check. */ |
4810 | enum wp_check_result | |
4811 | { | |
4812 | /* The watchpoint has been deleted. */ | |
4813 | WP_DELETED = 1, | |
4814 | ||
4815 | /* The value has changed. */ | |
4816 | WP_VALUE_CHANGED = 2, | |
4817 | ||
4818 | /* The value has not changed. */ | |
4819 | WP_VALUE_NOT_CHANGED = 3, | |
4820 | ||
4821 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4822 | WP_IGNORE = 4, | |
4823 | }; | |
c906108c SS |
4824 | |
4825 | #define BP_TEMPFLAG 1 | |
4826 | #define BP_HARDWAREFLAG 2 | |
4827 | ||
4a64f543 | 4828 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4829 | changed. */ |
553e4c11 | 4830 | |
bf469271 PA |
4831 | static wp_check_result |
4832 | watchpoint_check (bpstat bs) | |
c906108c | 4833 | { |
3a5c3e22 | 4834 | struct watchpoint *b; |
c906108c SS |
4835 | struct frame_info *fr; |
4836 | int within_current_scope; | |
4837 | ||
f431efe5 | 4838 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4839 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4840 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4841 | |
f6bc2008 PA |
4842 | /* If this is a local watchpoint, we only want to check if the |
4843 | watchpoint frame is in scope if the current thread is the thread | |
4844 | that was used to create the watchpoint. */ | |
4845 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4846 | return WP_IGNORE; |
f6bc2008 | 4847 | |
c906108c SS |
4848 | if (b->exp_valid_block == NULL) |
4849 | within_current_scope = 1; | |
4850 | else | |
4851 | { | |
edb3359d DJ |
4852 | struct frame_info *frame = get_current_frame (); |
4853 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4854 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4855 | ||
c9cf6e20 | 4856 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4857 | still in the function but the stack frame has already been |
4858 | invalidated. Since we can't rely on the values of local | |
4859 | variables after the stack has been destroyed, we are treating | |
4860 | the watchpoint in that state as `not changed' without further | |
4861 | checking. Don't mark watchpoints as changed if the current | |
4862 | frame is in an epilogue - even if they are in some other | |
4863 | frame, our view of the stack is likely to be wrong and | |
4864 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4865 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4866 | return WP_IGNORE; |
a0f49112 | 4867 | |
101dcfbe | 4868 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4869 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4870 | |
4871 | /* If we've gotten confused in the unwinder, we might have | |
4872 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4873 | if (within_current_scope) |
4874 | { | |
4875 | struct symbol *function; | |
4876 | ||
4877 | function = get_frame_function (fr); | |
4878 | if (function == NULL | |
4879 | || !contained_in (b->exp_valid_block, | |
4880 | SYMBOL_BLOCK_VALUE (function))) | |
4881 | within_current_scope = 0; | |
4882 | } | |
69fbadd5 | 4883 | |
edb3359d | 4884 | if (within_current_scope) |
c906108c SS |
4885 | /* If we end up stopping, the current frame will get selected |
4886 | in normal_stop. So this call to select_frame won't affect | |
4887 | the user. */ | |
0f7d239c | 4888 | select_frame (fr); |
c906108c | 4889 | } |
c5aa993b | 4890 | |
c906108c SS |
4891 | if (within_current_scope) |
4892 | { | |
4a64f543 MS |
4893 | /* We use value_{,free_to_}mark because it could be a *long* |
4894 | time before we return to the command level and call | |
4895 | free_all_values. We can't call free_all_values because we | |
4896 | might be in the middle of evaluating a function call. */ | |
c906108c | 4897 | |
0cf6dd15 | 4898 | int pc = 0; |
9c06b0b4 | 4899 | struct value *mark; |
fa4727a6 DJ |
4900 | struct value *new_val; |
4901 | ||
c1fc2657 | 4902 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4903 | /* Since we don't know the exact trigger address (from |
4904 | stopped_data_address), just tell the user we've triggered | |
4905 | a mask watchpoint. */ | |
4906 | return WP_VALUE_CHANGED; | |
4907 | ||
4908 | mark = value_mark (); | |
4d01a485 | 4909 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4910 | |
bb9d5f81 PP |
4911 | if (b->val_bitsize != 0) |
4912 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4913 | ||
4a64f543 MS |
4914 | /* We use value_equal_contents instead of value_equal because |
4915 | the latter coerces an array to a pointer, thus comparing just | |
4916 | the address of the array instead of its contents. This is | |
4917 | not what we want. */ | |
fa4727a6 | 4918 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4919 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4920 | new_val))) | |
c906108c | 4921 | { |
c906108c | 4922 | bs->old_val = b->val; |
850645cf | 4923 | b->val = release_value (new_val); |
fa4727a6 | 4924 | b->val_valid = 1; |
850645cf TT |
4925 | if (new_val != NULL) |
4926 | value_free_to_mark (mark); | |
c906108c SS |
4927 | return WP_VALUE_CHANGED; |
4928 | } | |
4929 | else | |
4930 | { | |
60e1c644 | 4931 | /* Nothing changed. */ |
c906108c | 4932 | value_free_to_mark (mark); |
c906108c SS |
4933 | return WP_VALUE_NOT_CHANGED; |
4934 | } | |
4935 | } | |
4936 | else | |
4937 | { | |
4938 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4939 | if we temporarily ignored the watchpoint, then when |
4940 | we reenter the block in which it is valid it contains | |
4941 | garbage (in the case of a function, it may have two | |
4942 | garbage values, one before and one after the prologue). | |
4943 | So we can't even detect the first assignment to it and | |
4944 | watch after that (since the garbage may or may not equal | |
4945 | the first value assigned). */ | |
348d480f PA |
4946 | /* We print all the stop information in |
4947 | breakpoint_ops->print_it, but in this case, by the time we | |
4948 | call breakpoint_ops->print_it this bp will be deleted | |
4949 | already. So we have no choice but print the information | |
4950 | here. */ | |
468afe6c | 4951 | |
0e454242 | 4952 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4953 | { |
4954 | struct ui_out *uiout = current_uiout; | |
4955 | ||
112e8700 SM |
4956 | if (uiout->is_mi_like_p ()) |
4957 | uiout->field_string | |
4958 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4959 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4960 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4961 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4962 | "which its expression is valid.\n"); |
4963 | } | |
4ce44c66 | 4964 | |
cdac0397 | 4965 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4966 | b->commands = NULL; |
d0fb5eae | 4967 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4968 | |
4969 | return WP_DELETED; | |
4970 | } | |
4971 | } | |
4972 | ||
18a18393 | 4973 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4974 | breakpoint location BL. This function does not check if we should |
4975 | stop, only if BL explains the stop. */ | |
4976 | ||
18a18393 | 4977 | static int |
6c95b8df | 4978 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4979 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4980 | const struct target_waitstatus *ws) |
18a18393 VP |
4981 | { |
4982 | struct breakpoint *b = bl->owner; | |
4983 | ||
348d480f | 4984 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4985 | gdb_assert (b != NULL); |
4986 | ||
bd522513 | 4987 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4988 | } |
4989 | ||
3a5c3e22 PA |
4990 | /* Determine if the watched values have actually changed, and we |
4991 | should stop. If not, set BS->stop to 0. */ | |
4992 | ||
18a18393 VP |
4993 | static void |
4994 | bpstat_check_watchpoint (bpstat bs) | |
4995 | { | |
2bdf28a0 | 4996 | const struct bp_location *bl; |
3a5c3e22 | 4997 | struct watchpoint *b; |
2bdf28a0 JK |
4998 | |
4999 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5000 | bl = bs->bp_location_at; |
2bdf28a0 | 5001 | gdb_assert (bl != NULL); |
3a5c3e22 | 5002 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5003 | gdb_assert (b != NULL); |
18a18393 | 5004 | |
18a18393 | 5005 | { |
18a18393 VP |
5006 | int must_check_value = 0; |
5007 | ||
c1fc2657 | 5008 | if (b->type == bp_watchpoint) |
18a18393 VP |
5009 | /* For a software watchpoint, we must always check the |
5010 | watched value. */ | |
5011 | must_check_value = 1; | |
5012 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5013 | /* We have a hardware watchpoint (read, write, or access) | |
5014 | and the target earlier reported an address watched by | |
5015 | this watchpoint. */ | |
5016 | must_check_value = 1; | |
5017 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5018 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5019 | /* We were stopped by a hardware watchpoint, but the target could |
5020 | not report the data address. We must check the watchpoint's | |
5021 | value. Access and read watchpoints are out of luck; without | |
5022 | a data address, we can't figure it out. */ | |
5023 | must_check_value = 1; | |
3a5c3e22 | 5024 | |
18a18393 VP |
5025 | if (must_check_value) |
5026 | { | |
bf469271 PA |
5027 | wp_check_result e; |
5028 | ||
5029 | TRY | |
5030 | { | |
5031 | e = watchpoint_check (bs); | |
5032 | } | |
5033 | CATCH (ex, RETURN_MASK_ALL) | |
5034 | { | |
5035 | exception_fprintf (gdb_stderr, ex, | |
5036 | "Error evaluating expression " | |
5037 | "for watchpoint %d\n", | |
5038 | b->number); | |
5039 | ||
5040 | SWITCH_THRU_ALL_UIS () | |
5041 | { | |
5042 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5043 | b->number); | |
5044 | } | |
5045 | watchpoint_del_at_next_stop (b); | |
5046 | e = WP_DELETED; | |
5047 | } | |
5048 | END_CATCH | |
5049 | ||
18a18393 VP |
5050 | switch (e) |
5051 | { | |
5052 | case WP_DELETED: | |
5053 | /* We've already printed what needs to be printed. */ | |
5054 | bs->print_it = print_it_done; | |
5055 | /* Stop. */ | |
5056 | break; | |
60e1c644 PA |
5057 | case WP_IGNORE: |
5058 | bs->print_it = print_it_noop; | |
5059 | bs->stop = 0; | |
5060 | break; | |
18a18393 | 5061 | case WP_VALUE_CHANGED: |
c1fc2657 | 5062 | if (b->type == bp_read_watchpoint) |
18a18393 | 5063 | { |
85d721b8 PA |
5064 | /* There are two cases to consider here: |
5065 | ||
4a64f543 | 5066 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5067 | In that case, trust the target, and always report |
5068 | the watchpoint hit to the user. Even though | |
5069 | reads don't cause value changes, the value may | |
5070 | have changed since the last time it was read, and | |
5071 | since we're not trapping writes, we will not see | |
5072 | those, and as such we should ignore our notion of | |
5073 | old value. | |
5074 | ||
4a64f543 | 5075 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5076 | reads and writes. There are two ways this may |
5077 | happen: | |
5078 | ||
4a64f543 | 5079 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5080 | reads only, but can break on accesses (reads or |
5081 | writes), such as e.g., x86. We detect this case | |
5082 | at the time we try to insert read watchpoints. | |
5083 | ||
4a64f543 | 5084 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5085 | watchpoints, but, the user set an access or write |
5086 | watchpoint watching the same memory as this read | |
5087 | watchpoint. | |
5088 | ||
5089 | If we're watching memory writes as well as reads, | |
5090 | ignore watchpoint hits when we find that the | |
5091 | value hasn't changed, as reads don't cause | |
5092 | changes. This still gives false positives when | |
5093 | the program writes the same value to memory as | |
5094 | what there was already in memory (we will confuse | |
5095 | it for a read), but it's much better than | |
5096 | nothing. */ | |
5097 | ||
5098 | int other_write_watchpoint = 0; | |
5099 | ||
5100 | if (bl->watchpoint_type == hw_read) | |
5101 | { | |
5102 | struct breakpoint *other_b; | |
5103 | ||
5104 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5105 | if (other_b->type == bp_hardware_watchpoint |
5106 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5107 | { |
3a5c3e22 PA |
5108 | struct watchpoint *other_w = |
5109 | (struct watchpoint *) other_b; | |
5110 | ||
5111 | if (other_w->watchpoint_triggered | |
5112 | == watch_triggered_yes) | |
5113 | { | |
5114 | other_write_watchpoint = 1; | |
5115 | break; | |
5116 | } | |
85d721b8 PA |
5117 | } |
5118 | } | |
5119 | ||
5120 | if (other_write_watchpoint | |
5121 | || bl->watchpoint_type == hw_access) | |
5122 | { | |
5123 | /* We're watching the same memory for writes, | |
5124 | and the value changed since the last time we | |
5125 | updated it, so this trap must be for a write. | |
5126 | Ignore it. */ | |
5127 | bs->print_it = print_it_noop; | |
5128 | bs->stop = 0; | |
5129 | } | |
18a18393 VP |
5130 | } |
5131 | break; | |
5132 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5133 | if (b->type == bp_hardware_watchpoint |
5134 | || b->type == bp_watchpoint) | |
18a18393 VP |
5135 | { |
5136 | /* Don't stop: write watchpoints shouldn't fire if | |
5137 | the value hasn't changed. */ | |
5138 | bs->print_it = print_it_noop; | |
5139 | bs->stop = 0; | |
5140 | } | |
5141 | /* Stop. */ | |
5142 | break; | |
5143 | default: | |
5144 | /* Can't happen. */ | |
18a18393 VP |
5145 | break; |
5146 | } | |
5147 | } | |
5148 | else /* must_check_value == 0 */ | |
5149 | { | |
5150 | /* This is a case where some watchpoint(s) triggered, but | |
5151 | not at the address of this watchpoint, or else no | |
5152 | watchpoint triggered after all. So don't print | |
5153 | anything for this watchpoint. */ | |
5154 | bs->print_it = print_it_noop; | |
5155 | bs->stop = 0; | |
5156 | } | |
5157 | } | |
5158 | } | |
5159 | ||
7d4df6a4 DE |
5160 | /* For breakpoints that are currently marked as telling gdb to stop, |
5161 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5162 | of breakpoint referred to by BS. If we should not stop for this |
5163 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5164 | |
18a18393 VP |
5165 | static void |
5166 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5167 | { | |
2bdf28a0 JK |
5168 | const struct bp_location *bl; |
5169 | struct breakpoint *b; | |
bf469271 PA |
5170 | /* Assume stop. */ |
5171 | bool condition_result = true; | |
7d4df6a4 DE |
5172 | struct expression *cond; |
5173 | ||
5174 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5175 | |
5176 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5177 | bl = bs->bp_location_at; |
2bdf28a0 | 5178 | gdb_assert (bl != NULL); |
f431efe5 | 5179 | b = bs->breakpoint_at; |
2bdf28a0 | 5180 | gdb_assert (b != NULL); |
18a18393 | 5181 | |
b775012e LM |
5182 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5183 | need to do so again since GDB does not know if we stopped due to a | |
5184 | breakpoint or a single step breakpoint. */ | |
5185 | ||
18a18393 | 5186 | if (frame_id_p (b->frame_id) |
edb3359d | 5187 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5188 | { |
7d4df6a4 DE |
5189 | bs->stop = 0; |
5190 | return; | |
5191 | } | |
60e1c644 | 5192 | |
12ab52e9 PA |
5193 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5194 | evaluating the condition if this isn't the specified | |
5195 | thread/task. */ | |
5d5658a1 | 5196 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5197 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5198 | ||
6c1b0f7b DE |
5199 | { |
5200 | bs->stop = 0; | |
5201 | return; | |
5202 | } | |
5203 | ||
6dddc817 DE |
5204 | /* Evaluate extension language breakpoints that have a "stop" method |
5205 | implemented. */ | |
5206 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5207 | |
7d4df6a4 DE |
5208 | if (is_watchpoint (b)) |
5209 | { | |
5210 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5211 | |
4d01a485 | 5212 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5213 | } |
5214 | else | |
4d01a485 | 5215 | cond = bl->cond.get (); |
60e1c644 | 5216 | |
7d4df6a4 DE |
5217 | if (cond && b->disposition != disp_del_at_next_stop) |
5218 | { | |
5219 | int within_current_scope = 1; | |
5220 | struct watchpoint * w; | |
60e1c644 | 5221 | |
7d4df6a4 DE |
5222 | /* We use value_mark and value_free_to_mark because it could |
5223 | be a long time before we return to the command level and | |
5224 | call free_all_values. We can't call free_all_values | |
5225 | because we might be in the middle of evaluating a | |
5226 | function call. */ | |
5227 | struct value *mark = value_mark (); | |
5228 | ||
5229 | if (is_watchpoint (b)) | |
5230 | w = (struct watchpoint *) b; | |
5231 | else | |
5232 | w = NULL; | |
5233 | ||
5234 | /* Need to select the frame, with all that implies so that | |
5235 | the conditions will have the right context. Because we | |
5236 | use the frame, we will not see an inlined function's | |
5237 | variables when we arrive at a breakpoint at the start | |
5238 | of the inlined function; the current frame will be the | |
5239 | call site. */ | |
5240 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5241 | select_frame (get_current_frame ()); | |
5242 | else | |
18a18393 | 5243 | { |
7d4df6a4 DE |
5244 | struct frame_info *frame; |
5245 | ||
5246 | /* For local watchpoint expressions, which particular | |
5247 | instance of a local is being watched matters, so we | |
5248 | keep track of the frame to evaluate the expression | |
5249 | in. To evaluate the condition however, it doesn't | |
5250 | really matter which instantiation of the function | |
5251 | where the condition makes sense triggers the | |
5252 | watchpoint. This allows an expression like "watch | |
5253 | global if q > 10" set in `func', catch writes to | |
5254 | global on all threads that call `func', or catch | |
5255 | writes on all recursive calls of `func' by a single | |
5256 | thread. We simply always evaluate the condition in | |
5257 | the innermost frame that's executing where it makes | |
5258 | sense to evaluate the condition. It seems | |
5259 | intuitive. */ | |
5260 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5261 | if (frame != NULL) | |
5262 | select_frame (frame); | |
5263 | else | |
5264 | within_current_scope = 0; | |
18a18393 | 5265 | } |
7d4df6a4 | 5266 | if (within_current_scope) |
bf469271 PA |
5267 | { |
5268 | TRY | |
5269 | { | |
5270 | condition_result = breakpoint_cond_eval (cond); | |
5271 | } | |
5272 | CATCH (ex, RETURN_MASK_ALL) | |
5273 | { | |
5274 | exception_fprintf (gdb_stderr, ex, | |
5275 | "Error in testing breakpoint condition:\n"); | |
5276 | } | |
5277 | END_CATCH | |
5278 | } | |
7d4df6a4 | 5279 | else |
18a18393 | 5280 | { |
7d4df6a4 DE |
5281 | warning (_("Watchpoint condition cannot be tested " |
5282 | "in the current scope")); | |
5283 | /* If we failed to set the right context for this | |
5284 | watchpoint, unconditionally report it. */ | |
18a18393 | 5285 | } |
7d4df6a4 DE |
5286 | /* FIXME-someday, should give breakpoint #. */ |
5287 | value_free_to_mark (mark); | |
18a18393 | 5288 | } |
7d4df6a4 | 5289 | |
bf469271 | 5290 | if (cond && !condition_result) |
7d4df6a4 DE |
5291 | { |
5292 | bs->stop = 0; | |
5293 | } | |
7d4df6a4 DE |
5294 | else if (b->ignore_count > 0) |
5295 | { | |
5296 | b->ignore_count--; | |
5297 | bs->stop = 0; | |
5298 | /* Increase the hit count even though we don't stop. */ | |
5299 | ++(b->hit_count); | |
76727919 | 5300 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5301 | } |
18a18393 VP |
5302 | } |
5303 | ||
1cf4d951 PA |
5304 | /* Returns true if we need to track moribund locations of LOC's type |
5305 | on the current target. */ | |
5306 | ||
5307 | static int | |
5308 | need_moribund_for_location_type (struct bp_location *loc) | |
5309 | { | |
5310 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5311 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5312 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5313 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5314 | } | |
5315 | ||
18a18393 | 5316 | |
9709f61c | 5317 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5318 | BP_ADDR in thread PTID. |
c906108c | 5319 | |
d983da9c | 5320 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5321 | don't understand this stop. Result is a chain of bpstat's such |
5322 | that: | |
c906108c | 5323 | |
c5aa993b | 5324 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5325 | |
c5aa993b | 5326 | if we understand why we stopped, the result is not null. |
c906108c | 5327 | |
c5aa993b JM |
5328 | Each element of the chain refers to a particular breakpoint or |
5329 | watchpoint at which we have stopped. (We may have stopped for | |
5330 | several reasons concurrently.) | |
c906108c | 5331 | |
c5aa993b JM |
5332 | Each element of the chain has valid next, breakpoint_at, |
5333 | commands, FIXME??? fields. */ | |
c906108c SS |
5334 | |
5335 | bpstat | |
accd0bcd | 5336 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5337 | CORE_ADDR bp_addr, ptid_t ptid, |
5338 | const struct target_waitstatus *ws) | |
c906108c | 5339 | { |
0d381245 | 5340 | struct breakpoint *b = NULL; |
afe38095 | 5341 | struct bp_location *bl; |
20874c92 | 5342 | struct bp_location *loc; |
5760d0ab JK |
5343 | /* First item of allocated bpstat's. */ |
5344 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5345 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5346 | bpstat bs; |
20874c92 | 5347 | int ix; |
429374b8 | 5348 | int need_remove_insert; |
f431efe5 | 5349 | int removed_any; |
c906108c | 5350 | |
f431efe5 PA |
5351 | /* First, build the bpstat chain with locations that explain a |
5352 | target stop, while being careful to not set the target running, | |
5353 | as that may invalidate locations (in particular watchpoint | |
5354 | locations are recreated). Resuming will happen here with | |
5355 | breakpoint conditions or watchpoint expressions that include | |
5356 | inferior function calls. */ | |
c5aa993b | 5357 | |
429374b8 JK |
5358 | ALL_BREAKPOINTS (b) |
5359 | { | |
1a853c52 | 5360 | if (!breakpoint_enabled (b)) |
429374b8 | 5361 | continue; |
a5606eee | 5362 | |
429374b8 JK |
5363 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5364 | { | |
4a64f543 MS |
5365 | /* For hardware watchpoints, we look only at the first |
5366 | location. The watchpoint_check function will work on the | |
5367 | entire expression, not the individual locations. For | |
5368 | read watchpoints, the watchpoints_triggered function has | |
5369 | checked all locations already. */ | |
429374b8 JK |
5370 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5371 | break; | |
18a18393 | 5372 | |
f6592439 | 5373 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5374 | continue; |
c5aa993b | 5375 | |
09ac7c10 | 5376 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5377 | continue; |
c5aa993b | 5378 | |
4a64f543 MS |
5379 | /* Come here if it's a watchpoint, or if the break address |
5380 | matches. */ | |
c5aa993b | 5381 | |
04afa70c | 5382 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5383 | explain stop. */ |
c5aa993b | 5384 | |
f431efe5 PA |
5385 | /* Assume we stop. Should we find a watchpoint that is not |
5386 | actually triggered, or if the condition of the breakpoint | |
5387 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5388 | bs->stop = 1; |
5389 | bs->print = 1; | |
d983da9c | 5390 | |
f431efe5 PA |
5391 | /* If this is a scope breakpoint, mark the associated |
5392 | watchpoint as triggered so that we will handle the | |
5393 | out-of-scope event. We'll get to the watchpoint next | |
5394 | iteration. */ | |
d0fb5eae | 5395 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5396 | { |
5397 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5398 | ||
5399 | w->watchpoint_triggered = watch_triggered_yes; | |
5400 | } | |
f431efe5 PA |
5401 | } |
5402 | } | |
5403 | ||
7c16b83e | 5404 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5405 | if (!target_supports_stopped_by_sw_breakpoint () |
5406 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5407 | { |
1cf4d951 | 5408 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5409 | { |
1cf4d951 PA |
5410 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5411 | && need_moribund_for_location_type (loc)) | |
5412 | { | |
04afa70c | 5413 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5414 | /* For hits of moribund locations, we should just proceed. */ |
5415 | bs->stop = 0; | |
5416 | bs->print = 0; | |
5417 | bs->print_it = print_it_noop; | |
5418 | } | |
f431efe5 PA |
5419 | } |
5420 | } | |
5421 | ||
edcc5120 TT |
5422 | /* A bit of special processing for shlib breakpoints. We need to |
5423 | process solib loading here, so that the lists of loaded and | |
5424 | unloaded libraries are correct before we handle "catch load" and | |
5425 | "catch unload". */ | |
5426 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5427 | { | |
5d268276 | 5428 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5429 | { |
5430 | handle_solib_event (); | |
5431 | break; | |
5432 | } | |
5433 | } | |
5434 | ||
f431efe5 PA |
5435 | /* Now go through the locations that caused the target to stop, and |
5436 | check whether we're interested in reporting this stop to higher | |
5437 | layers, or whether we should resume the target transparently. */ | |
5438 | ||
5439 | removed_any = 0; | |
5440 | ||
5760d0ab | 5441 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5442 | { |
5443 | if (!bs->stop) | |
5444 | continue; | |
5445 | ||
f431efe5 | 5446 | b = bs->breakpoint_at; |
348d480f PA |
5447 | b->ops->check_status (bs); |
5448 | if (bs->stop) | |
28010a5d | 5449 | { |
348d480f | 5450 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5451 | |
429374b8 JK |
5452 | if (bs->stop) |
5453 | { | |
5454 | ++(b->hit_count); | |
76727919 | 5455 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5456 | |
4a64f543 | 5457 | /* We will stop here. */ |
429374b8 JK |
5458 | if (b->disposition == disp_disable) |
5459 | { | |
816338b5 | 5460 | --(b->enable_count); |
1a853c52 | 5461 | if (b->enable_count <= 0) |
429374b8 | 5462 | b->enable_state = bp_disabled; |
f431efe5 | 5463 | removed_any = 1; |
429374b8 JK |
5464 | } |
5465 | if (b->silent) | |
5466 | bs->print = 0; | |
5467 | bs->commands = b->commands; | |
abf85f46 | 5468 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5469 | ? bs->commands.get () : NULL)) |
abf85f46 | 5470 | bs->print = 0; |
9d6e6e84 HZ |
5471 | |
5472 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5473 | } |
5474 | ||
348d480f | 5475 | } |
a9b3a50f PA |
5476 | |
5477 | /* Print nothing for this entry if we don't stop or don't | |
5478 | print. */ | |
5479 | if (!bs->stop || !bs->print) | |
5480 | bs->print_it = print_it_noop; | |
429374b8 | 5481 | } |
876fa593 | 5482 | |
d983da9c DJ |
5483 | /* If we aren't stopping, the value of some hardware watchpoint may |
5484 | not have changed, but the intermediate memory locations we are | |
5485 | watching may have. Don't bother if we're stopping; this will get | |
5486 | done later. */ | |
d832cb68 | 5487 | need_remove_insert = 0; |
5760d0ab JK |
5488 | if (! bpstat_causes_stop (bs_head)) |
5489 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5490 | if (!bs->stop |
f431efe5 PA |
5491 | && bs->breakpoint_at |
5492 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5493 | { |
3a5c3e22 PA |
5494 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5495 | ||
5496 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5497 | need_remove_insert = 1; |
d983da9c DJ |
5498 | } |
5499 | ||
d832cb68 | 5500 | if (need_remove_insert) |
44702360 | 5501 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5502 | else if (removed_any) |
44702360 | 5503 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5504 | |
5760d0ab | 5505 | return bs_head; |
c906108c | 5506 | } |
628fe4e4 JK |
5507 | |
5508 | static void | |
5509 | handle_jit_event (void) | |
5510 | { | |
5511 | struct frame_info *frame; | |
5512 | struct gdbarch *gdbarch; | |
5513 | ||
243a9253 PA |
5514 | if (debug_infrun) |
5515 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5516 | ||
628fe4e4 JK |
5517 | /* Switch terminal for any messages produced by |
5518 | breakpoint_re_set. */ | |
223ffa71 | 5519 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5520 | |
5521 | frame = get_current_frame (); | |
5522 | gdbarch = get_frame_arch (frame); | |
5523 | ||
5524 | jit_event_handler (gdbarch); | |
5525 | ||
223ffa71 | 5526 | target_terminal::inferior (); |
628fe4e4 JK |
5527 | } |
5528 | ||
5529 | /* Prepare WHAT final decision for infrun. */ | |
5530 | ||
5531 | /* Decide what infrun needs to do with this bpstat. */ | |
5532 | ||
c906108c | 5533 | struct bpstat_what |
0e30163f | 5534 | bpstat_what (bpstat bs_head) |
c906108c | 5535 | { |
c906108c | 5536 | struct bpstat_what retval; |
0e30163f | 5537 | bpstat bs; |
c906108c | 5538 | |
628fe4e4 | 5539 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5540 | retval.call_dummy = STOP_NONE; |
186c406b | 5541 | retval.is_longjmp = 0; |
628fe4e4 | 5542 | |
0e30163f | 5543 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5544 | { |
628fe4e4 JK |
5545 | /* Extract this BS's action. After processing each BS, we check |
5546 | if its action overrides all we've seem so far. */ | |
5547 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5548 | enum bptype bptype; | |
5549 | ||
c906108c | 5550 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5551 | { |
5552 | /* I suspect this can happen if it was a momentary | |
5553 | breakpoint which has since been deleted. */ | |
5554 | bptype = bp_none; | |
5555 | } | |
20874c92 | 5556 | else |
f431efe5 | 5557 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5558 | |
5559 | switch (bptype) | |
c906108c SS |
5560 | { |
5561 | case bp_none: | |
628fe4e4 | 5562 | break; |
c906108c SS |
5563 | case bp_breakpoint: |
5564 | case bp_hardware_breakpoint: | |
7c16b83e | 5565 | case bp_single_step: |
c906108c SS |
5566 | case bp_until: |
5567 | case bp_finish: | |
a9b3a50f | 5568 | case bp_shlib_event: |
c906108c SS |
5569 | if (bs->stop) |
5570 | { | |
5571 | if (bs->print) | |
628fe4e4 | 5572 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5573 | else |
628fe4e4 | 5574 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5575 | } |
5576 | else | |
628fe4e4 | 5577 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5578 | break; |
5579 | case bp_watchpoint: | |
5580 | case bp_hardware_watchpoint: | |
5581 | case bp_read_watchpoint: | |
5582 | case bp_access_watchpoint: | |
5583 | if (bs->stop) | |
5584 | { | |
5585 | if (bs->print) | |
628fe4e4 | 5586 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5587 | else |
628fe4e4 | 5588 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5589 | } |
5590 | else | |
628fe4e4 JK |
5591 | { |
5592 | /* There was a watchpoint, but we're not stopping. | |
5593 | This requires no further action. */ | |
5594 | } | |
c906108c SS |
5595 | break; |
5596 | case bp_longjmp: | |
e2e4d78b | 5597 | case bp_longjmp_call_dummy: |
186c406b | 5598 | case bp_exception: |
0a39bb32 PA |
5599 | if (bs->stop) |
5600 | { | |
5601 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5602 | retval.is_longjmp = bptype != bp_exception; | |
5603 | } | |
5604 | else | |
5605 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5606 | break; |
5607 | case bp_longjmp_resume: | |
186c406b | 5608 | case bp_exception_resume: |
0a39bb32 PA |
5609 | if (bs->stop) |
5610 | { | |
5611 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5612 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5613 | } | |
5614 | else | |
5615 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5616 | break; |
5617 | case bp_step_resume: | |
5618 | if (bs->stop) | |
628fe4e4 JK |
5619 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5620 | else | |
c906108c | 5621 | { |
628fe4e4 JK |
5622 | /* It is for the wrong frame. */ |
5623 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5624 | } |
c906108c | 5625 | break; |
2c03e5be PA |
5626 | case bp_hp_step_resume: |
5627 | if (bs->stop) | |
5628 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5629 | else | |
5630 | { | |
5631 | /* It is for the wrong frame. */ | |
5632 | this_action = BPSTAT_WHAT_SINGLE; | |
5633 | } | |
5634 | break; | |
c906108c | 5635 | case bp_watchpoint_scope: |
c4093a6a | 5636 | case bp_thread_event: |
1900040c | 5637 | case bp_overlay_event: |
0fd8e87f | 5638 | case bp_longjmp_master: |
aa7d318d | 5639 | case bp_std_terminate_master: |
186c406b | 5640 | case bp_exception_master: |
628fe4e4 | 5641 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5642 | break; |
ce78b96d | 5643 | case bp_catchpoint: |
c5aa993b JM |
5644 | if (bs->stop) |
5645 | { | |
5646 | if (bs->print) | |
628fe4e4 | 5647 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5648 | else |
628fe4e4 | 5649 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5650 | } |
5651 | else | |
628fe4e4 JK |
5652 | { |
5653 | /* There was a catchpoint, but we're not stopping. | |
5654 | This requires no further action. */ | |
5655 | } | |
5656 | break; | |
628fe4e4 | 5657 | case bp_jit_event: |
628fe4e4 | 5658 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5659 | break; |
c906108c | 5660 | case bp_call_dummy: |
53a5351d JM |
5661 | /* Make sure the action is stop (silent or noisy), |
5662 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5663 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5664 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5665 | break; |
5666 | case bp_std_terminate: | |
5667 | /* Make sure the action is stop (silent or noisy), | |
5668 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5669 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5670 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5671 | break; |
1042e4c0 | 5672 | case bp_tracepoint: |
7a697b8d | 5673 | case bp_fast_tracepoint: |
0fb4aa4b | 5674 | case bp_static_tracepoint: |
1042e4c0 SS |
5675 | /* Tracepoint hits should not be reported back to GDB, and |
5676 | if one got through somehow, it should have been filtered | |
5677 | out already. */ | |
5678 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5679 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5680 | break; |
5681 | case bp_gnu_ifunc_resolver: | |
5682 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5683 | this_action = BPSTAT_WHAT_SINGLE; | |
5684 | break; | |
5685 | case bp_gnu_ifunc_resolver_return: | |
5686 | /* The breakpoint will be removed, execution will restart from the | |
5687 | PC of the former breakpoint. */ | |
5688 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5689 | break; | |
e7e0cddf SS |
5690 | |
5691 | case bp_dprintf: | |
a11cfd87 HZ |
5692 | if (bs->stop) |
5693 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5694 | else | |
5695 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5696 | break; |
5697 | ||
628fe4e4 JK |
5698 | default: |
5699 | internal_error (__FILE__, __LINE__, | |
5700 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5701 | } |
628fe4e4 | 5702 | |
325fac50 | 5703 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5704 | } |
628fe4e4 | 5705 | |
243a9253 PA |
5706 | return retval; |
5707 | } | |
628fe4e4 | 5708 | |
243a9253 PA |
5709 | void |
5710 | bpstat_run_callbacks (bpstat bs_head) | |
5711 | { | |
5712 | bpstat bs; | |
628fe4e4 | 5713 | |
0e30163f JK |
5714 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5715 | { | |
5716 | struct breakpoint *b = bs->breakpoint_at; | |
5717 | ||
5718 | if (b == NULL) | |
5719 | continue; | |
5720 | switch (b->type) | |
5721 | { | |
243a9253 PA |
5722 | case bp_jit_event: |
5723 | handle_jit_event (); | |
5724 | break; | |
0e30163f JK |
5725 | case bp_gnu_ifunc_resolver: |
5726 | gnu_ifunc_resolver_stop (b); | |
5727 | break; | |
5728 | case bp_gnu_ifunc_resolver_return: | |
5729 | gnu_ifunc_resolver_return_stop (b); | |
5730 | break; | |
5731 | } | |
5732 | } | |
c906108c SS |
5733 | } |
5734 | ||
5735 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5736 | without hardware support). This isn't related to a specific bpstat, | |
5737 | just to things like whether watchpoints are set. */ | |
5738 | ||
c5aa993b | 5739 | int |
fba45db2 | 5740 | bpstat_should_step (void) |
c906108c SS |
5741 | { |
5742 | struct breakpoint *b; | |
cc59ec59 | 5743 | |
c906108c | 5744 | ALL_BREAKPOINTS (b) |
717a8278 | 5745 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5746 | return 1; |
c906108c SS |
5747 | return 0; |
5748 | } | |
5749 | ||
67822962 PA |
5750 | int |
5751 | bpstat_causes_stop (bpstat bs) | |
5752 | { | |
5753 | for (; bs != NULL; bs = bs->next) | |
5754 | if (bs->stop) | |
5755 | return 1; | |
5756 | ||
5757 | return 0; | |
5758 | } | |
5759 | ||
c906108c | 5760 | \f |
c5aa993b | 5761 | |
170b53b2 UW |
5762 | /* Compute a string of spaces suitable to indent the next line |
5763 | so it starts at the position corresponding to the table column | |
5764 | named COL_NAME in the currently active table of UIOUT. */ | |
5765 | ||
5766 | static char * | |
5767 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5768 | { | |
5769 | static char wrap_indent[80]; | |
5770 | int i, total_width, width, align; | |
c5209615 | 5771 | const char *text; |
170b53b2 UW |
5772 | |
5773 | total_width = 0; | |
112e8700 | 5774 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5775 | { |
5776 | if (strcmp (text, col_name) == 0) | |
5777 | { | |
5778 | gdb_assert (total_width < sizeof wrap_indent); | |
5779 | memset (wrap_indent, ' ', total_width); | |
5780 | wrap_indent[total_width] = 0; | |
5781 | ||
5782 | return wrap_indent; | |
5783 | } | |
5784 | ||
5785 | total_width += width + 1; | |
5786 | } | |
5787 | ||
5788 | return NULL; | |
5789 | } | |
5790 | ||
b775012e LM |
5791 | /* Determine if the locations of this breakpoint will have their conditions |
5792 | evaluated by the target, host or a mix of both. Returns the following: | |
5793 | ||
5794 | "host": Host evals condition. | |
5795 | "host or target": Host or Target evals condition. | |
5796 | "target": Target evals condition. | |
5797 | */ | |
5798 | ||
5799 | static const char * | |
5800 | bp_condition_evaluator (struct breakpoint *b) | |
5801 | { | |
5802 | struct bp_location *bl; | |
5803 | char host_evals = 0; | |
5804 | char target_evals = 0; | |
5805 | ||
5806 | if (!b) | |
5807 | return NULL; | |
5808 | ||
5809 | if (!is_breakpoint (b)) | |
5810 | return NULL; | |
5811 | ||
5812 | if (gdb_evaluates_breakpoint_condition_p () | |
5813 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5814 | return condition_evaluation_host; | |
5815 | ||
5816 | for (bl = b->loc; bl; bl = bl->next) | |
5817 | { | |
5818 | if (bl->cond_bytecode) | |
5819 | target_evals++; | |
5820 | else | |
5821 | host_evals++; | |
5822 | } | |
5823 | ||
5824 | if (host_evals && target_evals) | |
5825 | return condition_evaluation_both; | |
5826 | else if (target_evals) | |
5827 | return condition_evaluation_target; | |
5828 | else | |
5829 | return condition_evaluation_host; | |
5830 | } | |
5831 | ||
5832 | /* Determine the breakpoint location's condition evaluator. This is | |
5833 | similar to bp_condition_evaluator, but for locations. */ | |
5834 | ||
5835 | static const char * | |
5836 | bp_location_condition_evaluator (struct bp_location *bl) | |
5837 | { | |
5838 | if (bl && !is_breakpoint (bl->owner)) | |
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 | if (bl && bl->cond_bytecode) | |
5846 | return condition_evaluation_target; | |
5847 | else | |
5848 | return condition_evaluation_host; | |
5849 | } | |
5850 | ||
859825b8 JK |
5851 | /* Print the LOC location out of the list of B->LOC locations. */ |
5852 | ||
170b53b2 UW |
5853 | static void |
5854 | print_breakpoint_location (struct breakpoint *b, | |
5855 | struct bp_location *loc) | |
0d381245 | 5856 | { |
79a45e25 | 5857 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5858 | |
5859 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5860 | |
859825b8 JK |
5861 | if (loc != NULL && loc->shlib_disabled) |
5862 | loc = NULL; | |
5863 | ||
6c95b8df PA |
5864 | if (loc != NULL) |
5865 | set_current_program_space (loc->pspace); | |
5866 | ||
56435ebe | 5867 | if (b->display_canonical) |
d28cd78a | 5868 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5869 | else if (loc && loc->symtab) |
0d381245 | 5870 | { |
4a27f119 KS |
5871 | const struct symbol *sym = loc->symbol; |
5872 | ||
5873 | if (sym == NULL) | |
5874 | sym = find_pc_sect_function (loc->address, loc->section); | |
5875 | ||
0d381245 VP |
5876 | if (sym) |
5877 | { | |
112e8700 SM |
5878 | uiout->text ("in "); |
5879 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5880 | uiout->text (" "); | |
5881 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5882 | uiout->text ("at "); | |
0d381245 | 5883 | } |
112e8700 | 5884 | uiout->field_string ("file", |
05cba821 | 5885 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5886 | uiout->text (":"); |
05cba821 | 5887 | |
112e8700 SM |
5888 | if (uiout->is_mi_like_p ()) |
5889 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5890 | |
112e8700 | 5891 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5892 | } |
859825b8 | 5893 | else if (loc) |
0d381245 | 5894 | { |
d7e74731 | 5895 | string_file stb; |
170b53b2 | 5896 | |
d7e74731 | 5897 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5898 | demangle, ""); |
112e8700 | 5899 | uiout->field_stream ("at", stb); |
0d381245 | 5900 | } |
859825b8 | 5901 | else |
f00aae0f | 5902 | { |
d28cd78a TT |
5903 | uiout->field_string ("pending", |
5904 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5905 | /* If extra_string is available, it could be holding a condition |
5906 | or dprintf arguments. In either case, make sure it is printed, | |
5907 | too, but only for non-MI streams. */ | |
112e8700 | 5908 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5909 | { |
5910 | if (b->type == bp_dprintf) | |
112e8700 | 5911 | uiout->text (","); |
f00aae0f | 5912 | else |
112e8700 SM |
5913 | uiout->text (" "); |
5914 | uiout->text (b->extra_string); | |
f00aae0f KS |
5915 | } |
5916 | } | |
6c95b8df | 5917 | |
b775012e LM |
5918 | if (loc && is_breakpoint (b) |
5919 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5920 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5921 | { | |
112e8700 SM |
5922 | uiout->text (" ("); |
5923 | uiout->field_string ("evaluated-by", | |
b775012e | 5924 | bp_location_condition_evaluator (loc)); |
112e8700 | 5925 | uiout->text (")"); |
b775012e | 5926 | } |
0d381245 VP |
5927 | } |
5928 | ||
269b11a2 PA |
5929 | static const char * |
5930 | bptype_string (enum bptype type) | |
c906108c | 5931 | { |
c4093a6a JM |
5932 | struct ep_type_description |
5933 | { | |
5934 | enum bptype type; | |
a121b7c1 | 5935 | const char *description; |
c4093a6a JM |
5936 | }; |
5937 | static struct ep_type_description bptypes[] = | |
c906108c | 5938 | { |
c5aa993b JM |
5939 | {bp_none, "?deleted?"}, |
5940 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5941 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5942 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5943 | {bp_until, "until"}, |
5944 | {bp_finish, "finish"}, | |
5945 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5946 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5947 | {bp_read_watchpoint, "read watchpoint"}, |
5948 | {bp_access_watchpoint, "acc watchpoint"}, | |
5949 | {bp_longjmp, "longjmp"}, | |
5950 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5951 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5952 | {bp_exception, "exception"}, |
5953 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5954 | {bp_step_resume, "step resume"}, |
2c03e5be | 5955 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5956 | {bp_watchpoint_scope, "watchpoint scope"}, |
5957 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5958 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5959 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5960 | {bp_thread_event, "thread events"}, |
1900040c | 5961 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5962 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5963 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5964 | {bp_exception_master, "exception master"}, |
ce78b96d | 5965 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5966 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5967 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5968 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5969 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5970 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5971 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5972 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5973 | }; |
269b11a2 PA |
5974 | |
5975 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5976 | || ((int) type != bptypes[(int) type].type)) | |
5977 | internal_error (__FILE__, __LINE__, | |
5978 | _("bptypes table does not describe type #%d."), | |
5979 | (int) type); | |
5980 | ||
5981 | return bptypes[(int) type].description; | |
5982 | } | |
5983 | ||
998580f1 MK |
5984 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5985 | For CLI, prefix the list with the string 'inf'. */ | |
5986 | ||
5987 | static void | |
5988 | output_thread_groups (struct ui_out *uiout, | |
5989 | const char *field_name, | |
5c632425 | 5990 | const std::vector<int> &inf_nums, |
998580f1 MK |
5991 | int mi_only) |
5992 | { | |
112e8700 | 5993 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5994 | |
5995 | /* For backward compatibility, don't display inferiors in CLI unless | |
5996 | there are several. Always display them for MI. */ | |
5997 | if (!is_mi && mi_only) | |
5998 | return; | |
5999 | ||
10f489e5 | 6000 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6001 | |
5c632425 | 6002 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6003 | { |
6004 | if (is_mi) | |
6005 | { | |
6006 | char mi_group[10]; | |
6007 | ||
5c632425 | 6008 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6009 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6010 | } |
6011 | else | |
6012 | { | |
6013 | if (i == 0) | |
112e8700 | 6014 | uiout->text (" inf "); |
998580f1 | 6015 | else |
112e8700 | 6016 | uiout->text (", "); |
998580f1 | 6017 | |
5c632425 | 6018 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6019 | } |
6020 | } | |
998580f1 MK |
6021 | } |
6022 | ||
269b11a2 PA |
6023 | /* Print B to gdb_stdout. */ |
6024 | ||
6025 | static void | |
6026 | print_one_breakpoint_location (struct breakpoint *b, | |
6027 | struct bp_location *loc, | |
6028 | int loc_number, | |
6029 | struct bp_location **last_loc, | |
269b11a2 PA |
6030 | int allflag) |
6031 | { | |
6032 | struct command_line *l; | |
c2c6d25f | 6033 | static char bpenables[] = "nynny"; |
c906108c | 6034 | |
79a45e25 | 6035 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6036 | int header_of_multiple = 0; |
6037 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6038 | struct value_print_options opts; |
6039 | ||
6040 | get_user_print_options (&opts); | |
0d381245 VP |
6041 | |
6042 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6043 | /* See comment in print_one_breakpoint concerning treatment of |
6044 | breakpoints with single disabled location. */ | |
0d381245 VP |
6045 | if (loc == NULL |
6046 | && (b->loc != NULL | |
6047 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6048 | header_of_multiple = 1; | |
6049 | if (loc == NULL) | |
6050 | loc = b->loc; | |
6051 | ||
c4093a6a JM |
6052 | annotate_record (); |
6053 | ||
6054 | /* 1 */ | |
6055 | annotate_field (0); | |
0d381245 VP |
6056 | if (part_of_multiple) |
6057 | { | |
6058 | char *formatted; | |
0c6773c1 | 6059 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6060 | uiout->field_string ("number", formatted); |
0d381245 VP |
6061 | xfree (formatted); |
6062 | } | |
6063 | else | |
6064 | { | |
112e8700 | 6065 | uiout->field_int ("number", b->number); |
0d381245 | 6066 | } |
c4093a6a JM |
6067 | |
6068 | /* 2 */ | |
6069 | annotate_field (1); | |
0d381245 | 6070 | if (part_of_multiple) |
112e8700 | 6071 | uiout->field_skip ("type"); |
269b11a2 | 6072 | else |
112e8700 | 6073 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6074 | |
6075 | /* 3 */ | |
6076 | annotate_field (2); | |
0d381245 | 6077 | if (part_of_multiple) |
112e8700 | 6078 | uiout->field_skip ("disp"); |
0d381245 | 6079 | else |
112e8700 | 6080 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6081 | |
c4093a6a JM |
6082 | |
6083 | /* 4 */ | |
6084 | annotate_field (3); | |
0d381245 | 6085 | if (part_of_multiple) |
112e8700 | 6086 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6087 | else |
112e8700 SM |
6088 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6089 | uiout->spaces (2); | |
0d381245 | 6090 | |
c4093a6a JM |
6091 | |
6092 | /* 5 and 6 */ | |
3086aeae | 6093 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6094 | { |
4a64f543 MS |
6095 | /* Although the print_one can possibly print all locations, |
6096 | calling it here is not likely to get any nice result. So, | |
6097 | make sure there's just one location. */ | |
0d381245 | 6098 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6099 | b->ops->print_one (b, last_loc); |
0d381245 | 6100 | } |
3086aeae DJ |
6101 | else |
6102 | switch (b->type) | |
6103 | { | |
6104 | case bp_none: | |
6105 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6106 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6107 | break; |
c906108c | 6108 | |
3086aeae DJ |
6109 | case bp_watchpoint: |
6110 | case bp_hardware_watchpoint: | |
6111 | case bp_read_watchpoint: | |
6112 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6113 | { |
6114 | struct watchpoint *w = (struct watchpoint *) b; | |
6115 | ||
6116 | /* Field 4, the address, is omitted (which makes the columns | |
6117 | not line up too nicely with the headers, but the effect | |
6118 | is relatively readable). */ | |
6119 | if (opts.addressprint) | |
112e8700 | 6120 | uiout->field_skip ("addr"); |
3a5c3e22 | 6121 | annotate_field (5); |
112e8700 | 6122 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6123 | } |
3086aeae DJ |
6124 | break; |
6125 | ||
3086aeae DJ |
6126 | case bp_breakpoint: |
6127 | case bp_hardware_breakpoint: | |
7c16b83e | 6128 | case bp_single_step: |
3086aeae DJ |
6129 | case bp_until: |
6130 | case bp_finish: | |
6131 | case bp_longjmp: | |
6132 | case bp_longjmp_resume: | |
e2e4d78b | 6133 | case bp_longjmp_call_dummy: |
186c406b TT |
6134 | case bp_exception: |
6135 | case bp_exception_resume: | |
3086aeae | 6136 | case bp_step_resume: |
2c03e5be | 6137 | case bp_hp_step_resume: |
3086aeae DJ |
6138 | case bp_watchpoint_scope: |
6139 | case bp_call_dummy: | |
aa7d318d | 6140 | case bp_std_terminate: |
3086aeae DJ |
6141 | case bp_shlib_event: |
6142 | case bp_thread_event: | |
6143 | case bp_overlay_event: | |
0fd8e87f | 6144 | case bp_longjmp_master: |
aa7d318d | 6145 | case bp_std_terminate_master: |
186c406b | 6146 | case bp_exception_master: |
1042e4c0 | 6147 | case bp_tracepoint: |
7a697b8d | 6148 | case bp_fast_tracepoint: |
0fb4aa4b | 6149 | case bp_static_tracepoint: |
e7e0cddf | 6150 | case bp_dprintf: |
4efc6507 | 6151 | case bp_jit_event: |
0e30163f JK |
6152 | case bp_gnu_ifunc_resolver: |
6153 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6154 | if (opts.addressprint) |
3086aeae DJ |
6155 | { |
6156 | annotate_field (4); | |
54e52265 | 6157 | if (header_of_multiple) |
112e8700 | 6158 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6159 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6160 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6161 | else |
112e8700 | 6162 | uiout->field_core_addr ("addr", |
5af949e3 | 6163 | loc->gdbarch, loc->address); |
3086aeae DJ |
6164 | } |
6165 | annotate_field (5); | |
0d381245 | 6166 | if (!header_of_multiple) |
170b53b2 | 6167 | print_breakpoint_location (b, loc); |
0d381245 | 6168 | if (b->loc) |
a6d9a66e | 6169 | *last_loc = b->loc; |
3086aeae DJ |
6170 | break; |
6171 | } | |
c906108c | 6172 | |
6c95b8df | 6173 | |
998580f1 | 6174 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6175 | { |
6176 | struct inferior *inf; | |
5c632425 | 6177 | std::vector<int> inf_nums; |
998580f1 | 6178 | int mi_only = 1; |
6c95b8df | 6179 | |
998580f1 | 6180 | ALL_INFERIORS (inf) |
6c95b8df PA |
6181 | { |
6182 | if (inf->pspace == loc->pspace) | |
5c632425 | 6183 | inf_nums.push_back (inf->num); |
6c95b8df | 6184 | } |
998580f1 MK |
6185 | |
6186 | /* For backward compatibility, don't display inferiors in CLI unless | |
6187 | there are several. Always display for MI. */ | |
6188 | if (allflag | |
6189 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6190 | && (number_of_program_spaces () > 1 | |
6191 | || number_of_inferiors () > 1) | |
6192 | /* LOC is for existing B, it cannot be in | |
6193 | moribund_locations and thus having NULL OWNER. */ | |
6194 | && loc->owner->type != bp_catchpoint)) | |
6195 | mi_only = 0; | |
5c632425 | 6196 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6197 | } |
6198 | ||
4a306c9a | 6199 | if (!part_of_multiple) |
c4093a6a | 6200 | { |
4a306c9a JB |
6201 | if (b->thread != -1) |
6202 | { | |
6203 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6204 | "stop only in" line a little further down. */ |
112e8700 SM |
6205 | uiout->text (" thread "); |
6206 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6207 | } |
6208 | else if (b->task != 0) | |
6209 | { | |
112e8700 SM |
6210 | uiout->text (" task "); |
6211 | uiout->field_int ("task", b->task); | |
4a306c9a | 6212 | } |
c4093a6a | 6213 | } |
f1310107 | 6214 | |
112e8700 | 6215 | uiout->text ("\n"); |
f1310107 | 6216 | |
348d480f | 6217 | if (!part_of_multiple) |
f1310107 TJB |
6218 | b->ops->print_one_detail (b, uiout); |
6219 | ||
0d381245 | 6220 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6221 | { |
6222 | annotate_field (6); | |
112e8700 | 6223 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6224 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6225 | the frame ID. */ |
112e8700 | 6226 | uiout->field_core_addr ("frame", |
5af949e3 | 6227 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6228 | uiout->text ("\n"); |
c4093a6a JM |
6229 | } |
6230 | ||
28010a5d | 6231 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6232 | { |
6233 | annotate_field (7); | |
d77f58be | 6234 | if (is_tracepoint (b)) |
112e8700 | 6235 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6236 | else |
112e8700 SM |
6237 | uiout->text ("\tstop only if "); |
6238 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6239 | |
6240 | /* Print whether the target is doing the breakpoint's condition | |
6241 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6242 | if (is_breakpoint (b) | |
6243 | && breakpoint_condition_evaluation_mode () | |
6244 | == condition_evaluation_target) | |
6245 | { | |
112e8700 SM |
6246 | uiout->text (" ("); |
6247 | uiout->field_string ("evaluated-by", | |
b775012e | 6248 | bp_condition_evaluator (b)); |
112e8700 | 6249 | uiout->text (" evals)"); |
b775012e | 6250 | } |
112e8700 | 6251 | uiout->text ("\n"); |
0101ce28 JJ |
6252 | } |
6253 | ||
0d381245 | 6254 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6255 | { |
4a64f543 | 6256 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6257 | uiout->text ("\tstop only in thread "); |
6258 | if (uiout->is_mi_like_p ()) | |
6259 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6260 | else |
6261 | { | |
6262 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6263 | ||
112e8700 | 6264 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6265 | } |
112e8700 | 6266 | uiout->text ("\n"); |
c4093a6a JM |
6267 | } |
6268 | ||
556ec64d YQ |
6269 | if (!part_of_multiple) |
6270 | { | |
6271 | if (b->hit_count) | |
31f56a27 YQ |
6272 | { |
6273 | /* FIXME should make an annotation for this. */ | |
6274 | if (is_catchpoint (b)) | |
112e8700 | 6275 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6276 | else if (is_tracepoint (b)) |
112e8700 | 6277 | uiout->text ("\ttracepoint"); |
31f56a27 | 6278 | else |
112e8700 SM |
6279 | uiout->text ("\tbreakpoint"); |
6280 | uiout->text (" already hit "); | |
6281 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6282 | if (b->hit_count == 1) |
112e8700 | 6283 | uiout->text (" time\n"); |
31f56a27 | 6284 | else |
112e8700 | 6285 | uiout->text (" times\n"); |
31f56a27 | 6286 | } |
556ec64d YQ |
6287 | else |
6288 | { | |
31f56a27 | 6289 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6290 | if (uiout->is_mi_like_p ()) |
6291 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6292 | } |
6293 | } | |
8b93c638 | 6294 | |
0d381245 | 6295 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6296 | { |
6297 | annotate_field (8); | |
112e8700 SM |
6298 | uiout->text ("\tignore next "); |
6299 | uiout->field_int ("ignore", b->ignore_count); | |
6300 | uiout->text (" hits\n"); | |
c4093a6a | 6301 | } |
059fb39f | 6302 | |
816338b5 SS |
6303 | /* Note that an enable count of 1 corresponds to "enable once" |
6304 | behavior, which is reported by the combination of enablement and | |
6305 | disposition, so we don't need to mention it here. */ | |
6306 | if (!part_of_multiple && b->enable_count > 1) | |
6307 | { | |
6308 | annotate_field (8); | |
112e8700 | 6309 | uiout->text ("\tdisable after "); |
816338b5 SS |
6310 | /* Tweak the wording to clarify that ignore and enable counts |
6311 | are distinct, and have additive effect. */ | |
6312 | if (b->ignore_count) | |
112e8700 | 6313 | uiout->text ("additional "); |
816338b5 | 6314 | else |
112e8700 SM |
6315 | uiout->text ("next "); |
6316 | uiout->field_int ("enable", b->enable_count); | |
6317 | uiout->text (" hits\n"); | |
816338b5 SS |
6318 | } |
6319 | ||
f196051f SS |
6320 | if (!part_of_multiple && is_tracepoint (b)) |
6321 | { | |
6322 | struct tracepoint *tp = (struct tracepoint *) b; | |
6323 | ||
6324 | if (tp->traceframe_usage) | |
6325 | { | |
112e8700 SM |
6326 | uiout->text ("\ttrace buffer usage "); |
6327 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6328 | uiout->text (" bytes\n"); | |
f196051f SS |
6329 | } |
6330 | } | |
d3ce09f5 | 6331 | |
d1b0a7bf | 6332 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6333 | if (!part_of_multiple && l) |
c4093a6a JM |
6334 | { |
6335 | annotate_field (9); | |
2e783024 | 6336 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6337 | print_command_lines (uiout, l, 4); |
c4093a6a | 6338 | } |
d24317b4 | 6339 | |
d9b3f62e | 6340 | if (is_tracepoint (b)) |
1042e4c0 | 6341 | { |
d9b3f62e PA |
6342 | struct tracepoint *t = (struct tracepoint *) b; |
6343 | ||
6344 | if (!part_of_multiple && t->pass_count) | |
6345 | { | |
6346 | annotate_field (10); | |
112e8700 SM |
6347 | uiout->text ("\tpass count "); |
6348 | uiout->field_int ("pass", t->pass_count); | |
6349 | uiout->text (" \n"); | |
d9b3f62e | 6350 | } |
f2a8bc8a YQ |
6351 | |
6352 | /* Don't display it when tracepoint or tracepoint location is | |
6353 | pending. */ | |
6354 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6355 | { | |
6356 | annotate_field (11); | |
6357 | ||
112e8700 SM |
6358 | if (uiout->is_mi_like_p ()) |
6359 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6360 | loc->inserted ? "y" : "n"); |
6361 | else | |
6362 | { | |
6363 | if (loc->inserted) | |
112e8700 | 6364 | uiout->text ("\t"); |
f2a8bc8a | 6365 | else |
112e8700 SM |
6366 | uiout->text ("\tnot "); |
6367 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6368 | } |
6369 | } | |
1042e4c0 SS |
6370 | } |
6371 | ||
112e8700 | 6372 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6373 | { |
3a5c3e22 PA |
6374 | if (is_watchpoint (b)) |
6375 | { | |
6376 | struct watchpoint *w = (struct watchpoint *) b; | |
6377 | ||
112e8700 | 6378 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6379 | } |
f00aae0f | 6380 | else if (b->location != NULL |
d28cd78a | 6381 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6382 | uiout->field_string ("original-location", |
d28cd78a | 6383 | event_location_to_string (b->location.get ())); |
d24317b4 | 6384 | } |
c4093a6a | 6385 | } |
c5aa993b | 6386 | |
0d381245 VP |
6387 | static void |
6388 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6389 | struct bp_location **last_loc, |
6c95b8df | 6390 | int allflag) |
0d381245 | 6391 | { |
79a45e25 | 6392 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6393 | |
2e783024 TT |
6394 | { |
6395 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6396 | |
2e783024 TT |
6397 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6398 | } | |
0d381245 VP |
6399 | |
6400 | /* If this breakpoint has custom print function, | |
6401 | it's already printed. Otherwise, print individual | |
6402 | locations, if any. */ | |
6403 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6404 | { | |
4a64f543 MS |
6405 | /* If breakpoint has a single location that is disabled, we |
6406 | print it as if it had several locations, since otherwise it's | |
6407 | hard to represent "breakpoint enabled, location disabled" | |
6408 | situation. | |
6409 | ||
6410 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6411 | internally, that's not a property exposed to user. */ |
0d381245 | 6412 | if (b->loc |
a5606eee | 6413 | && !is_hardware_watchpoint (b) |
8d3788bd | 6414 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6415 | { |
6416 | struct bp_location *loc; | |
6417 | int n = 1; | |
8d3788bd | 6418 | |
0d381245 | 6419 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6420 | { |
2e783024 | 6421 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6422 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6423 | } |
0d381245 VP |
6424 | } |
6425 | } | |
6426 | } | |
6427 | ||
a6d9a66e UW |
6428 | static int |
6429 | breakpoint_address_bits (struct breakpoint *b) | |
6430 | { | |
6431 | int print_address_bits = 0; | |
6432 | struct bp_location *loc; | |
6433 | ||
c6d81124 PA |
6434 | /* Software watchpoints that aren't watching memory don't have an |
6435 | address to print. */ | |
6436 | if (is_no_memory_software_watchpoint (b)) | |
6437 | return 0; | |
6438 | ||
a6d9a66e UW |
6439 | for (loc = b->loc; loc; loc = loc->next) |
6440 | { | |
c7437ca6 PA |
6441 | int addr_bit; |
6442 | ||
c7437ca6 | 6443 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6444 | if (addr_bit > print_address_bits) |
6445 | print_address_bits = addr_bit; | |
6446 | } | |
6447 | ||
6448 | return print_address_bits; | |
6449 | } | |
0d381245 | 6450 | |
65630365 | 6451 | /* See breakpoint.h. */ |
c5aa993b | 6452 | |
65630365 PA |
6453 | void |
6454 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6455 | { |
a6d9a66e | 6456 | struct bp_location *dummy_loc = NULL; |
65630365 | 6457 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6458 | } |
c5aa993b | 6459 | |
09d682a4 TT |
6460 | /* Return true if this breakpoint was set by the user, false if it is |
6461 | internal or momentary. */ | |
6462 | ||
6463 | int | |
6464 | user_breakpoint_p (struct breakpoint *b) | |
6465 | { | |
46c6471b | 6466 | return b->number > 0; |
09d682a4 TT |
6467 | } |
6468 | ||
93daf339 TT |
6469 | /* See breakpoint.h. */ |
6470 | ||
6471 | int | |
6472 | pending_breakpoint_p (struct breakpoint *b) | |
6473 | { | |
6474 | return b->loc == NULL; | |
6475 | } | |
6476 | ||
7f3b0473 | 6477 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6478 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6479 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6480 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6481 | ones for which it returns non-zero. Return the total number of | |
6482 | breakpoints listed. */ | |
c906108c | 6483 | |
d77f58be | 6484 | static int |
4495129a | 6485 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6486 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6487 | { |
52f0bd74 | 6488 | struct breakpoint *b; |
a6d9a66e | 6489 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6490 | int nr_printable_breakpoints; |
79a45b7d | 6491 | struct value_print_options opts; |
a6d9a66e | 6492 | int print_address_bits = 0; |
269b11a2 | 6493 | int print_type_col_width = 14; |
79a45e25 | 6494 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6495 | |
79a45b7d TT |
6496 | get_user_print_options (&opts); |
6497 | ||
4a64f543 MS |
6498 | /* Compute the number of rows in the table, as well as the size |
6499 | required for address fields. */ | |
7f3b0473 AC |
6500 | nr_printable_breakpoints = 0; |
6501 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6502 | { |
6503 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6504 | if (filter && !filter (b)) | |
6505 | continue; | |
6506 | ||
6507 | /* If we have an "args" string, it is a list of breakpoints to | |
6508 | accept. Skip the others. */ | |
6509 | if (args != NULL && *args != '\0') | |
6510 | { | |
6511 | if (allflag && parse_and_eval_long (args) != b->number) | |
6512 | continue; | |
6513 | if (!allflag && !number_is_in_list (args, b->number)) | |
6514 | continue; | |
6515 | } | |
269b11a2 | 6516 | |
e5a67952 MS |
6517 | if (allflag || user_breakpoint_p (b)) |
6518 | { | |
6519 | int addr_bit, type_len; | |
a6d9a66e | 6520 | |
e5a67952 MS |
6521 | addr_bit = breakpoint_address_bits (b); |
6522 | if (addr_bit > print_address_bits) | |
6523 | print_address_bits = addr_bit; | |
269b11a2 | 6524 | |
e5a67952 MS |
6525 | type_len = strlen (bptype_string (b->type)); |
6526 | if (type_len > print_type_col_width) | |
6527 | print_type_col_width = type_len; | |
6528 | ||
6529 | nr_printable_breakpoints++; | |
6530 | } | |
6531 | } | |
7f3b0473 | 6532 | |
4a2b031d TT |
6533 | { |
6534 | ui_out_emit_table table_emitter (uiout, | |
6535 | opts.addressprint ? 6 : 5, | |
6536 | nr_printable_breakpoints, | |
6537 | "BreakpointTable"); | |
6538 | ||
6539 | if (nr_printable_breakpoints > 0) | |
6540 | annotate_breakpoints_headers (); | |
6541 | if (nr_printable_breakpoints > 0) | |
6542 | annotate_field (0); | |
6543 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6544 | if (nr_printable_breakpoints > 0) | |
6545 | annotate_field (1); | |
6546 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6547 | if (nr_printable_breakpoints > 0) | |
6548 | annotate_field (2); | |
6549 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6550 | if (nr_printable_breakpoints > 0) | |
6551 | annotate_field (3); | |
6552 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6553 | if (opts.addressprint) | |
6554 | { | |
6555 | if (nr_printable_breakpoints > 0) | |
6556 | annotate_field (4); | |
6557 | if (print_address_bits <= 32) | |
6558 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6559 | else | |
6560 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6561 | } | |
6562 | if (nr_printable_breakpoints > 0) | |
6563 | annotate_field (5); | |
6564 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6565 | uiout->table_body (); | |
6566 | if (nr_printable_breakpoints > 0) | |
6567 | annotate_breakpoints_table (); | |
6568 | ||
6569 | ALL_BREAKPOINTS (b) | |
6570 | { | |
6571 | QUIT; | |
6572 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6573 | if (filter && !filter (b)) | |
6574 | continue; | |
e5a67952 | 6575 | |
4a2b031d TT |
6576 | /* If we have an "args" string, it is a list of breakpoints to |
6577 | accept. Skip the others. */ | |
e5a67952 | 6578 | |
4a2b031d TT |
6579 | if (args != NULL && *args != '\0') |
6580 | { | |
6581 | if (allflag) /* maintenance info breakpoint */ | |
6582 | { | |
6583 | if (parse_and_eval_long (args) != b->number) | |
6584 | continue; | |
6585 | } | |
6586 | else /* all others */ | |
6587 | { | |
6588 | if (!number_is_in_list (args, b->number)) | |
6589 | continue; | |
6590 | } | |
6591 | } | |
6592 | /* We only print out user settable breakpoints unless the | |
6593 | allflag is set. */ | |
6594 | if (allflag || user_breakpoint_p (b)) | |
6595 | print_one_breakpoint (b, &last_loc, allflag); | |
6596 | } | |
6597 | } | |
698384cd | 6598 | |
7f3b0473 | 6599 | if (nr_printable_breakpoints == 0) |
c906108c | 6600 | { |
4a64f543 MS |
6601 | /* If there's a filter, let the caller decide how to report |
6602 | empty list. */ | |
d77f58be SS |
6603 | if (!filter) |
6604 | { | |
e5a67952 | 6605 | if (args == NULL || *args == '\0') |
112e8700 | 6606 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6607 | else |
112e8700 | 6608 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6609 | args); |
d77f58be | 6610 | } |
c906108c SS |
6611 | } |
6612 | else | |
c4093a6a | 6613 | { |
a6d9a66e UW |
6614 | if (last_loc && !server_command) |
6615 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6616 | } |
c906108c | 6617 | |
4a64f543 | 6618 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6619 | there have been breakpoints? */ |
c906108c | 6620 | annotate_breakpoints_table_end (); |
d77f58be SS |
6621 | |
6622 | return nr_printable_breakpoints; | |
c906108c SS |
6623 | } |
6624 | ||
ad443146 SS |
6625 | /* Display the value of default-collect in a way that is generally |
6626 | compatible with the breakpoint list. */ | |
6627 | ||
6628 | static void | |
6629 | default_collect_info (void) | |
6630 | { | |
79a45e25 PA |
6631 | struct ui_out *uiout = current_uiout; |
6632 | ||
ad443146 SS |
6633 | /* If it has no value (which is frequently the case), say nothing; a |
6634 | message like "No default-collect." gets in user's face when it's | |
6635 | not wanted. */ | |
6636 | if (!*default_collect) | |
6637 | return; | |
6638 | ||
6639 | /* The following phrase lines up nicely with per-tracepoint collect | |
6640 | actions. */ | |
112e8700 SM |
6641 | uiout->text ("default collect "); |
6642 | uiout->field_string ("default-collect", default_collect); | |
6643 | uiout->text (" \n"); | |
ad443146 SS |
6644 | } |
6645 | ||
c906108c | 6646 | static void |
0b39b52e | 6647 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6648 | { |
e5a67952 | 6649 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6650 | |
6651 | default_collect_info (); | |
d77f58be SS |
6652 | } |
6653 | ||
6654 | static void | |
1d12d88f | 6655 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6656 | { |
e5a67952 | 6657 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6658 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6659 | |
6660 | if (num_printed == 0) | |
6661 | { | |
e5a67952 | 6662 | if (args == NULL || *args == '\0') |
112e8700 | 6663 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6664 | else |
112e8700 | 6665 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6666 | } |
c906108c SS |
6667 | } |
6668 | ||
7a292a7a | 6669 | static void |
4495129a | 6670 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6671 | { |
e5a67952 | 6672 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6673 | |
6674 | default_collect_info (); | |
c906108c SS |
6675 | } |
6676 | ||
0d381245 | 6677 | static int |
714835d5 | 6678 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6679 | struct program_space *pspace, |
714835d5 | 6680 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6681 | { |
6682 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6683 | |
0d381245 VP |
6684 | for (; bl; bl = bl->next) |
6685 | { | |
6c95b8df PA |
6686 | if (bl->pspace == pspace |
6687 | && bl->address == pc | |
0d381245 VP |
6688 | && (!overlay_debugging || bl->section == section)) |
6689 | return 1; | |
6690 | } | |
6691 | return 0; | |
6692 | } | |
6693 | ||
672f9b60 | 6694 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6695 | concerns with logical breakpoints, so we match program spaces, not |
6696 | address spaces. */ | |
c906108c SS |
6697 | |
6698 | static void | |
6c95b8df PA |
6699 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6700 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6701 | struct obj_section *section, int thread) |
c906108c | 6702 | { |
52f0bd74 AC |
6703 | int others = 0; |
6704 | struct breakpoint *b; | |
c906108c SS |
6705 | |
6706 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6707 | others += (user_breakpoint_p (b) |
6708 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6709 | if (others > 0) |
6710 | { | |
a3f17187 AC |
6711 | if (others == 1) |
6712 | printf_filtered (_("Note: breakpoint ")); | |
6713 | else /* if (others == ???) */ | |
6714 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6715 | ALL_BREAKPOINTS (b) |
672f9b60 | 6716 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6717 | { |
6718 | others--; | |
6719 | printf_filtered ("%d", b->number); | |
6720 | if (b->thread == -1 && thread != -1) | |
6721 | printf_filtered (" (all threads)"); | |
6722 | else if (b->thread != -1) | |
6723 | printf_filtered (" (thread %d)", b->thread); | |
6724 | printf_filtered ("%s%s ", | |
059fb39f | 6725 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6726 | || b->enable_state == bp_call_disabled) |
0d381245 | 6727 | ? " (disabled)" |
0d381245 VP |
6728 | : ""), |
6729 | (others > 1) ? "," | |
6730 | : ((others == 1) ? " and" : "")); | |
6731 | } | |
a3f17187 | 6732 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6733 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6734 | printf_filtered (".\n"); |
6735 | } | |
6736 | } | |
6737 | \f | |
c906108c | 6738 | |
e4f237da | 6739 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6740 | BPT locations. For some breakpoint types, the locations' address members |
6741 | are irrelevant and it makes no sense to attempt to compare them to other | |
6742 | addresses (or use them for any other purpose either). | |
e4f237da | 6743 | |
4a64f543 | 6744 | More specifically, each of the following breakpoint types will |
244558af | 6745 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6746 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6747 | breakpoint location at address zero: |
e4f237da KB |
6748 | |
6749 | bp_watchpoint | |
2d134ed3 PA |
6750 | bp_catchpoint |
6751 | ||
6752 | */ | |
e4f237da KB |
6753 | |
6754 | static int | |
6755 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6756 | { | |
6757 | enum bptype type = bpt->type; | |
6758 | ||
2d134ed3 PA |
6759 | return (type != bp_watchpoint && type != bp_catchpoint); |
6760 | } | |
6761 | ||
6762 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6763 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6764 | ||
6765 | static int | |
4a64f543 MS |
6766 | watchpoint_locations_match (struct bp_location *loc1, |
6767 | struct bp_location *loc2) | |
2d134ed3 | 6768 | { |
3a5c3e22 PA |
6769 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6770 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6771 | ||
6772 | /* Both of them must exist. */ | |
6773 | gdb_assert (w1 != NULL); | |
6774 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6775 | |
4a64f543 MS |
6776 | /* If the target can evaluate the condition expression in hardware, |
6777 | then we we need to insert both watchpoints even if they are at | |
6778 | the same place. Otherwise the watchpoint will only trigger when | |
6779 | the condition of whichever watchpoint was inserted evaluates to | |
6780 | true, not giving a chance for GDB to check the condition of the | |
6781 | other watchpoint. */ | |
3a5c3e22 | 6782 | if ((w1->cond_exp |
4a64f543 MS |
6783 | && target_can_accel_watchpoint_condition (loc1->address, |
6784 | loc1->length, | |
0cf6dd15 | 6785 | loc1->watchpoint_type, |
4d01a485 | 6786 | w1->cond_exp.get ())) |
3a5c3e22 | 6787 | || (w2->cond_exp |
4a64f543 MS |
6788 | && target_can_accel_watchpoint_condition (loc2->address, |
6789 | loc2->length, | |
0cf6dd15 | 6790 | loc2->watchpoint_type, |
4d01a485 | 6791 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6792 | return 0; |
6793 | ||
85d721b8 PA |
6794 | /* Note that this checks the owner's type, not the location's. In |
6795 | case the target does not support read watchpoints, but does | |
6796 | support access watchpoints, we'll have bp_read_watchpoint | |
6797 | watchpoints with hw_access locations. Those should be considered | |
6798 | duplicates of hw_read locations. The hw_read locations will | |
6799 | become hw_access locations later. */ | |
2d134ed3 PA |
6800 | return (loc1->owner->type == loc2->owner->type |
6801 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6802 | && loc1->address == loc2->address | |
6803 | && loc1->length == loc2->length); | |
e4f237da KB |
6804 | } |
6805 | ||
31e77af2 | 6806 | /* See breakpoint.h. */ |
6c95b8df | 6807 | |
31e77af2 | 6808 | int |
accd0bcd YQ |
6809 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6810 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6811 | { |
f5656ead | 6812 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6813 | || aspace1 == aspace2) |
6814 | && addr1 == addr2); | |
6815 | } | |
6816 | ||
f1310107 TJB |
6817 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6818 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6819 | matches ASPACE2. On targets that have global breakpoints, the address | |
6820 | space doesn't really matter. */ | |
6821 | ||
6822 | static int | |
accd0bcd YQ |
6823 | breakpoint_address_match_range (const address_space *aspace1, |
6824 | CORE_ADDR addr1, | |
6825 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6826 | CORE_ADDR addr2) |
6827 | { | |
f5656ead | 6828 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6829 | || aspace1 == aspace2) |
6830 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6831 | } | |
6832 | ||
6833 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6834 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6835 | matches the breakpoint's address space. On targets that have global | |
6836 | breakpoints, the address space doesn't really matter. */ | |
6837 | ||
6838 | static int | |
6839 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6840 | const address_space *aspace, |
f1310107 TJB |
6841 | CORE_ADDR addr) |
6842 | { | |
6843 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6844 | aspace, addr) | |
6845 | || (bl->length | |
6846 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6847 | bl->address, bl->length, | |
6848 | aspace, addr))); | |
6849 | } | |
6850 | ||
d35ae833 PA |
6851 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6852 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6853 | match happens only if ASPACE matches the breakpoint's address | |
6854 | space. On targets that have global breakpoints, the address space | |
6855 | doesn't really matter. */ | |
6856 | ||
6857 | static int | |
6858 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6859 | const address_space *aspace, |
d35ae833 PA |
6860 | CORE_ADDR addr, int len) |
6861 | { | |
6862 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6863 | || bl->pspace->aspace == aspace) | |
6864 | { | |
6865 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6866 | ||
6867 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6868 | return 1; | |
6869 | } | |
6870 | return 0; | |
6871 | } | |
6872 | ||
1e4d1764 YQ |
6873 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6874 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6875 | true, otherwise returns false. */ | |
6876 | ||
6877 | static int | |
6878 | tracepoint_locations_match (struct bp_location *loc1, | |
6879 | struct bp_location *loc2) | |
6880 | { | |
6881 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6882 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6883 | locations at the same address of different tracepoints are regarded as | |
6884 | different locations. */ | |
6885 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6886 | else | |
6887 | return 0; | |
6888 | } | |
6889 | ||
2d134ed3 PA |
6890 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6891 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6892 | represent the same location. */ | |
6893 | ||
6894 | static int | |
4a64f543 MS |
6895 | breakpoint_locations_match (struct bp_location *loc1, |
6896 | struct bp_location *loc2) | |
2d134ed3 | 6897 | { |
2bdf28a0 JK |
6898 | int hw_point1, hw_point2; |
6899 | ||
6900 | /* Both of them must not be in moribund_locations. */ | |
6901 | gdb_assert (loc1->owner != NULL); | |
6902 | gdb_assert (loc2->owner != NULL); | |
6903 | ||
6904 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6905 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6906 | |
6907 | if (hw_point1 != hw_point2) | |
6908 | return 0; | |
6909 | else if (hw_point1) | |
6910 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6911 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6912 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6913 | else |
f1310107 TJB |
6914 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6915 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6916 | loc2->pspace->aspace, loc2->address) | |
6917 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6918 | } |
6919 | ||
76897487 KB |
6920 | static void |
6921 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6922 | int bnum, int have_bnum) | |
6923 | { | |
f63fbe86 MS |
6924 | /* The longest string possibly returned by hex_string_custom |
6925 | is 50 chars. These must be at least that big for safety. */ | |
6926 | char astr1[64]; | |
6927 | char astr2[64]; | |
76897487 | 6928 | |
bb599908 PH |
6929 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6930 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6931 | if (have_bnum) |
8a3fe4f8 | 6932 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6933 | bnum, astr1, astr2); |
6934 | else | |
8a3fe4f8 | 6935 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6936 | } |
6937 | ||
4a64f543 MS |
6938 | /* Adjust a breakpoint's address to account for architectural |
6939 | constraints on breakpoint placement. Return the adjusted address. | |
6940 | Note: Very few targets require this kind of adjustment. For most | |
6941 | targets, this function is simply the identity function. */ | |
76897487 KB |
6942 | |
6943 | static CORE_ADDR | |
a6d9a66e UW |
6944 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6945 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6946 | { |
a0de8c21 YQ |
6947 | if (bptype == bp_watchpoint |
6948 | || bptype == bp_hardware_watchpoint | |
6949 | || bptype == bp_read_watchpoint | |
6950 | || bptype == bp_access_watchpoint | |
6951 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6952 | { |
6953 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6954 | have their addresses modified. */ | |
6955 | return bpaddr; | |
6956 | } | |
7c16b83e PA |
6957 | else if (bptype == bp_single_step) |
6958 | { | |
6959 | /* Single-step breakpoints should not have their addresses | |
6960 | modified. If there's any architectural constrain that | |
6961 | applies to this address, then it should have already been | |
6962 | taken into account when the breakpoint was created in the | |
6963 | first place. If we didn't do this, stepping through e.g., | |
6964 | Thumb-2 IT blocks would break. */ | |
6965 | return bpaddr; | |
6966 | } | |
76897487 KB |
6967 | else |
6968 | { | |
a0de8c21 YQ |
6969 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6970 | ||
6971 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6972 | { | |
6973 | /* Some targets have architectural constraints on the placement | |
6974 | of breakpoint instructions. Obtain the adjusted address. */ | |
6975 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6976 | } | |
76897487 | 6977 | |
a0de8c21 | 6978 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6979 | |
6980 | /* An adjusted breakpoint address can significantly alter | |
6981 | a user's expectations. Print a warning if an adjustment | |
6982 | is required. */ | |
6983 | if (adjusted_bpaddr != bpaddr) | |
6984 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6985 | ||
6986 | return adjusted_bpaddr; | |
6987 | } | |
6988 | } | |
6989 | ||
5625a286 | 6990 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 6991 | { |
5625a286 | 6992 | bp_location *loc = this; |
7cc221ef | 6993 | |
348d480f PA |
6994 | gdb_assert (ops != NULL); |
6995 | ||
28010a5d PA |
6996 | loc->ops = ops; |
6997 | loc->owner = owner; | |
b775012e | 6998 | loc->cond_bytecode = NULL; |
0d381245 VP |
6999 | loc->shlib_disabled = 0; |
7000 | loc->enabled = 1; | |
e049a4b5 | 7001 | |
28010a5d | 7002 | switch (owner->type) |
e049a4b5 DJ |
7003 | { |
7004 | case bp_breakpoint: | |
7c16b83e | 7005 | case bp_single_step: |
e049a4b5 DJ |
7006 | case bp_until: |
7007 | case bp_finish: | |
7008 | case bp_longjmp: | |
7009 | case bp_longjmp_resume: | |
e2e4d78b | 7010 | case bp_longjmp_call_dummy: |
186c406b TT |
7011 | case bp_exception: |
7012 | case bp_exception_resume: | |
e049a4b5 | 7013 | case bp_step_resume: |
2c03e5be | 7014 | case bp_hp_step_resume: |
e049a4b5 DJ |
7015 | case bp_watchpoint_scope: |
7016 | case bp_call_dummy: | |
aa7d318d | 7017 | case bp_std_terminate: |
e049a4b5 DJ |
7018 | case bp_shlib_event: |
7019 | case bp_thread_event: | |
7020 | case bp_overlay_event: | |
4efc6507 | 7021 | case bp_jit_event: |
0fd8e87f | 7022 | case bp_longjmp_master: |
aa7d318d | 7023 | case bp_std_terminate_master: |
186c406b | 7024 | case bp_exception_master: |
0e30163f JK |
7025 | case bp_gnu_ifunc_resolver: |
7026 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7027 | case bp_dprintf: |
e049a4b5 | 7028 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7029 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7030 | break; |
7031 | case bp_hardware_breakpoint: | |
7032 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7033 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7034 | break; |
7035 | case bp_hardware_watchpoint: | |
7036 | case bp_read_watchpoint: | |
7037 | case bp_access_watchpoint: | |
7038 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7039 | break; | |
7040 | case bp_watchpoint: | |
ce78b96d | 7041 | case bp_catchpoint: |
15c3d785 PA |
7042 | case bp_tracepoint: |
7043 | case bp_fast_tracepoint: | |
0fb4aa4b | 7044 | case bp_static_tracepoint: |
e049a4b5 DJ |
7045 | loc->loc_type = bp_loc_other; |
7046 | break; | |
7047 | default: | |
e2e0b3e5 | 7048 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7049 | } |
7050 | ||
f431efe5 | 7051 | loc->refc = 1; |
28010a5d PA |
7052 | } |
7053 | ||
7054 | /* Allocate a struct bp_location. */ | |
7055 | ||
7056 | static struct bp_location * | |
7057 | allocate_bp_location (struct breakpoint *bpt) | |
7058 | { | |
348d480f PA |
7059 | return bpt->ops->allocate_location (bpt); |
7060 | } | |
7cc221ef | 7061 | |
f431efe5 PA |
7062 | static void |
7063 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7064 | { |
348d480f | 7065 | loc->ops->dtor (loc); |
4d01a485 | 7066 | delete loc; |
fe3f5fa8 VP |
7067 | } |
7068 | ||
f431efe5 PA |
7069 | /* Increment reference count. */ |
7070 | ||
7071 | static void | |
7072 | incref_bp_location (struct bp_location *bl) | |
7073 | { | |
7074 | ++bl->refc; | |
7075 | } | |
7076 | ||
7077 | /* Decrement reference count. If the reference count reaches 0, | |
7078 | destroy the bp_location. Sets *BLP to NULL. */ | |
7079 | ||
7080 | static void | |
7081 | decref_bp_location (struct bp_location **blp) | |
7082 | { | |
0807b50c PA |
7083 | gdb_assert ((*blp)->refc > 0); |
7084 | ||
f431efe5 PA |
7085 | if (--(*blp)->refc == 0) |
7086 | free_bp_location (*blp); | |
7087 | *blp = NULL; | |
7088 | } | |
7089 | ||
346774a9 | 7090 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7091 | |
b270e6f9 TT |
7092 | static breakpoint * |
7093 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7094 | { |
346774a9 | 7095 | struct breakpoint *b1; |
b270e6f9 | 7096 | struct breakpoint *result = b.get (); |
c906108c | 7097 | |
346774a9 PA |
7098 | /* Add this breakpoint to the end of the chain so that a list of |
7099 | breakpoints will come out in order of increasing numbers. */ | |
7100 | ||
7101 | b1 = breakpoint_chain; | |
7102 | if (b1 == 0) | |
b270e6f9 | 7103 | breakpoint_chain = b.release (); |
346774a9 PA |
7104 | else |
7105 | { | |
7106 | while (b1->next) | |
7107 | b1 = b1->next; | |
b270e6f9 | 7108 | b1->next = b.release (); |
346774a9 | 7109 | } |
b270e6f9 TT |
7110 | |
7111 | return result; | |
346774a9 PA |
7112 | } |
7113 | ||
7114 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7115 | ||
7116 | static void | |
7117 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7118 | struct gdbarch *gdbarch, | |
28010a5d | 7119 | enum bptype bptype, |
c0a91b2b | 7120 | const struct breakpoint_ops *ops) |
346774a9 | 7121 | { |
348d480f PA |
7122 | gdb_assert (ops != NULL); |
7123 | ||
28010a5d | 7124 | b->ops = ops; |
4d28f7a8 | 7125 | b->type = bptype; |
a6d9a66e | 7126 | b->gdbarch = gdbarch; |
c906108c SS |
7127 | b->language = current_language->la_language; |
7128 | b->input_radix = input_radix; | |
d0fb5eae | 7129 | b->related_breakpoint = b; |
346774a9 PA |
7130 | } |
7131 | ||
7132 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7133 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7134 | |
7135 | static struct breakpoint * | |
7136 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7137 | enum bptype bptype, |
c0a91b2b | 7138 | const struct breakpoint_ops *ops) |
346774a9 | 7139 | { |
3b0871f4 | 7140 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7141 | |
3b0871f4 | 7142 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7143 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7144 | } |
7145 | ||
0e30163f JK |
7146 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7147 | resolutions should be made as the user specified the location explicitly | |
7148 | enough. */ | |
7149 | ||
0d381245 | 7150 | static void |
0e30163f | 7151 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7152 | { |
2bdf28a0 JK |
7153 | gdb_assert (loc->owner != NULL); |
7154 | ||
0d381245 | 7155 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7156 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7157 | || is_tracepoint (loc->owner)) |
0d381245 | 7158 | { |
0e30163f | 7159 | int is_gnu_ifunc; |
2c02bd72 | 7160 | const char *function_name; |
6a3a010b | 7161 | CORE_ADDR func_addr; |
0e30163f | 7162 | |
2c02bd72 | 7163 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7164 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7165 | |
7166 | if (is_gnu_ifunc && !explicit_loc) | |
7167 | { | |
7168 | struct breakpoint *b = loc->owner; | |
7169 | ||
7170 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7171 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7172 | &loc->requested_address)) |
7173 | { | |
7174 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7175 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7176 | loc->requested_address, | |
7177 | b->type); | |
7178 | } | |
7179 | else if (b->type == bp_breakpoint && b->loc == loc | |
7180 | && loc->next == NULL && b->related_breakpoint == b) | |
7181 | { | |
7182 | /* Create only the whole new breakpoint of this type but do not | |
7183 | mess more complicated breakpoints with multiple locations. */ | |
7184 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7185 | /* Remember the resolver's address for use by the return |
7186 | breakpoint. */ | |
7187 | loc->related_address = func_addr; | |
0e30163f JK |
7188 | } |
7189 | } | |
7190 | ||
2c02bd72 DE |
7191 | if (function_name) |
7192 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7193 | } |
7194 | } | |
7195 | ||
a6d9a66e | 7196 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7197 | struct gdbarch * |
a6d9a66e UW |
7198 | get_sal_arch (struct symtab_and_line sal) |
7199 | { | |
7200 | if (sal.section) | |
7201 | return get_objfile_arch (sal.section->objfile); | |
7202 | if (sal.symtab) | |
eb822aa6 | 7203 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7204 | |
7205 | return NULL; | |
7206 | } | |
7207 | ||
346774a9 PA |
7208 | /* Low level routine for partially initializing a breakpoint of type |
7209 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7210 | file name, and line number are provided by SAL. |
0d381245 VP |
7211 | |
7212 | It is expected that the caller will complete the initialization of | |
7213 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7214 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7215 | |
346774a9 PA |
7216 | static void |
7217 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7218 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7219 | const struct breakpoint_ops *ops) |
0d381245 | 7220 | { |
28010a5d | 7221 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7222 | |
3742cc8b | 7223 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7224 | |
6c95b8df PA |
7225 | if (bptype != bp_catchpoint) |
7226 | gdb_assert (sal.pspace != NULL); | |
7227 | ||
f8eba3c6 TT |
7228 | /* Store the program space that was used to set the breakpoint, |
7229 | except for ordinary breakpoints, which are independent of the | |
7230 | program space. */ | |
7231 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7232 | b->pspace = sal.pspace; | |
346774a9 | 7233 | } |
c906108c | 7234 | |
346774a9 PA |
7235 | /* set_raw_breakpoint is a low level routine for allocating and |
7236 | partially initializing a breakpoint of type BPTYPE. The newly | |
7237 | created breakpoint's address, section, source file name, and line | |
7238 | number are provided by SAL. The newly created and partially | |
7239 | initialized breakpoint is added to the breakpoint chain and | |
7240 | is also returned as the value of this function. | |
7241 | ||
7242 | It is expected that the caller will complete the initialization of | |
7243 | the newly created breakpoint struct as well as output any status | |
7244 | information regarding the creation of a new breakpoint. In | |
7245 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7246 | number! Care should be taken to not allow an error to occur | |
7247 | prior to completing the initialization of the breakpoint. If this | |
7248 | should happen, a bogus breakpoint will be left on the chain. */ | |
7249 | ||
7250 | struct breakpoint * | |
7251 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7252 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7253 | const struct breakpoint_ops *ops) |
346774a9 | 7254 | { |
3b0871f4 | 7255 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7256 | |
3b0871f4 | 7257 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7258 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7259 | } |
7260 | ||
53a5351d | 7261 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7262 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7263 | initiated the operation. */ | |
c906108c SS |
7264 | |
7265 | void | |
186c406b | 7266 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7267 | { |
35df4500 | 7268 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7269 | int thread = tp->global_num; |
0fd8e87f UW |
7270 | |
7271 | /* To avoid having to rescan all objfile symbols at every step, | |
7272 | we maintain a list of continually-inserted but always disabled | |
7273 | longjmp "master" breakpoints. Here, we simply create momentary | |
7274 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7275 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7276 | if (b->pspace == current_program_space |
186c406b TT |
7277 | && (b->type == bp_longjmp_master |
7278 | || b->type == bp_exception_master)) | |
0fd8e87f | 7279 | { |
06edf0c0 PA |
7280 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7281 | struct breakpoint *clone; | |
cc59ec59 | 7282 | |
e2e4d78b JK |
7283 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7284 | after their removal. */ | |
06edf0c0 | 7285 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7286 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7287 | clone->thread = thread; |
7288 | } | |
186c406b TT |
7289 | |
7290 | tp->initiating_frame = frame; | |
c906108c SS |
7291 | } |
7292 | ||
611c83ae | 7293 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7294 | void |
611c83ae | 7295 | delete_longjmp_breakpoint (int thread) |
c906108c | 7296 | { |
35df4500 | 7297 | struct breakpoint *b, *b_tmp; |
c906108c | 7298 | |
35df4500 | 7299 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7300 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7301 | { |
7302 | if (b->thread == thread) | |
7303 | delete_breakpoint (b); | |
7304 | } | |
c906108c SS |
7305 | } |
7306 | ||
f59f708a PA |
7307 | void |
7308 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7309 | { | |
7310 | struct breakpoint *b, *b_tmp; | |
7311 | ||
7312 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7313 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7314 | { | |
7315 | if (b->thread == thread) | |
7316 | b->disposition = disp_del_at_next_stop; | |
7317 | } | |
7318 | } | |
7319 | ||
e2e4d78b JK |
7320 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7321 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7322 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7323 | breakpoints. */ | |
7324 | ||
7325 | struct breakpoint * | |
7326 | set_longjmp_breakpoint_for_call_dummy (void) | |
7327 | { | |
7328 | struct breakpoint *b, *retval = NULL; | |
7329 | ||
7330 | ALL_BREAKPOINTS (b) | |
7331 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7332 | { | |
7333 | struct breakpoint *new_b; | |
7334 | ||
7335 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7336 | &momentary_breakpoint_ops, |
7337 | 1); | |
5d5658a1 | 7338 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7339 | |
7340 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7341 | ||
7342 | gdb_assert (new_b->related_breakpoint == new_b); | |
7343 | if (retval == NULL) | |
7344 | retval = new_b; | |
7345 | new_b->related_breakpoint = retval; | |
7346 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7347 | retval = retval->related_breakpoint; | |
7348 | retval->related_breakpoint = new_b; | |
7349 | } | |
7350 | ||
7351 | return retval; | |
7352 | } | |
7353 | ||
7354 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7355 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7356 | stack. |
7357 | ||
7358 | You should call this function only at places where it is safe to currently | |
7359 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7360 | frames. */ | |
7361 | ||
7362 | void | |
b67a2c6f | 7363 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7364 | { |
7365 | struct breakpoint *b, *b_tmp; | |
7366 | ||
7367 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7368 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7369 | { |
7370 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7371 | ||
7372 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7373 | dummy_b = dummy_b->related_breakpoint; | |
7374 | if (dummy_b->type != bp_call_dummy | |
7375 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7376 | continue; | |
7377 | ||
b67a2c6f | 7378 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7379 | |
7380 | while (b->related_breakpoint != b) | |
7381 | { | |
7382 | if (b_tmp == b->related_breakpoint) | |
7383 | b_tmp = b->related_breakpoint->next; | |
7384 | delete_breakpoint (b->related_breakpoint); | |
7385 | } | |
7386 | delete_breakpoint (b); | |
7387 | } | |
7388 | } | |
7389 | ||
1900040c MS |
7390 | void |
7391 | enable_overlay_breakpoints (void) | |
7392 | { | |
52f0bd74 | 7393 | struct breakpoint *b; |
1900040c MS |
7394 | |
7395 | ALL_BREAKPOINTS (b) | |
7396 | if (b->type == bp_overlay_event) | |
7397 | { | |
7398 | b->enable_state = bp_enabled; | |
44702360 | 7399 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7400 | overlay_events_enabled = 1; |
1900040c MS |
7401 | } |
7402 | } | |
7403 | ||
7404 | void | |
7405 | disable_overlay_breakpoints (void) | |
7406 | { | |
52f0bd74 | 7407 | struct breakpoint *b; |
1900040c MS |
7408 | |
7409 | ALL_BREAKPOINTS (b) | |
7410 | if (b->type == bp_overlay_event) | |
7411 | { | |
7412 | b->enable_state = bp_disabled; | |
44702360 | 7413 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7414 | overlay_events_enabled = 0; |
1900040c MS |
7415 | } |
7416 | } | |
7417 | ||
aa7d318d TT |
7418 | /* Set an active std::terminate breakpoint for each std::terminate |
7419 | master breakpoint. */ | |
7420 | void | |
7421 | set_std_terminate_breakpoint (void) | |
7422 | { | |
35df4500 | 7423 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7424 | |
35df4500 | 7425 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7426 | if (b->pspace == current_program_space |
7427 | && b->type == bp_std_terminate_master) | |
7428 | { | |
06edf0c0 | 7429 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7430 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7431 | } |
7432 | } | |
7433 | ||
7434 | /* Delete all the std::terminate breakpoints. */ | |
7435 | void | |
7436 | delete_std_terminate_breakpoint (void) | |
7437 | { | |
35df4500 | 7438 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7439 | |
35df4500 | 7440 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7441 | if (b->type == bp_std_terminate) |
7442 | delete_breakpoint (b); | |
7443 | } | |
7444 | ||
c4093a6a | 7445 | struct breakpoint * |
a6d9a66e | 7446 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7447 | { |
7448 | struct breakpoint *b; | |
c4093a6a | 7449 | |
06edf0c0 PA |
7450 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7451 | &internal_breakpoint_ops); | |
7452 | ||
b5de0fa7 | 7453 | b->enable_state = bp_enabled; |
f00aae0f | 7454 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7455 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7456 | |
44702360 | 7457 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7458 | |
c4093a6a JM |
7459 | return b; |
7460 | } | |
7461 | ||
0101ce28 JJ |
7462 | struct lang_and_radix |
7463 | { | |
7464 | enum language lang; | |
7465 | int radix; | |
7466 | }; | |
7467 | ||
4efc6507 DE |
7468 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7469 | ||
7470 | struct breakpoint * | |
7471 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7472 | { | |
2a7f3dff PA |
7473 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7474 | &internal_breakpoint_ops); | |
4efc6507 | 7475 | } |
0101ce28 | 7476 | |
03673fc7 PP |
7477 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7478 | ||
7479 | void | |
7480 | remove_jit_event_breakpoints (void) | |
7481 | { | |
7482 | struct breakpoint *b, *b_tmp; | |
7483 | ||
7484 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7485 | if (b->type == bp_jit_event | |
7486 | && b->loc->pspace == current_program_space) | |
7487 | delete_breakpoint (b); | |
7488 | } | |
7489 | ||
cae688ec JJ |
7490 | void |
7491 | remove_solib_event_breakpoints (void) | |
7492 | { | |
35df4500 | 7493 | struct breakpoint *b, *b_tmp; |
cae688ec | 7494 | |
35df4500 | 7495 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7496 | if (b->type == bp_shlib_event |
7497 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7498 | delete_breakpoint (b); |
7499 | } | |
7500 | ||
f37f681c PA |
7501 | /* See breakpoint.h. */ |
7502 | ||
7503 | void | |
7504 | remove_solib_event_breakpoints_at_next_stop (void) | |
7505 | { | |
7506 | struct breakpoint *b, *b_tmp; | |
7507 | ||
7508 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7509 | if (b->type == bp_shlib_event | |
7510 | && b->loc->pspace == current_program_space) | |
7511 | b->disposition = disp_del_at_next_stop; | |
7512 | } | |
7513 | ||
04086b45 PA |
7514 | /* Helper for create_solib_event_breakpoint / |
7515 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7516 | INSERT_MODE to pass through to update_global_location_list. */ | |
7517 | ||
7518 | static struct breakpoint * | |
7519 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7520 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7521 | { |
7522 | struct breakpoint *b; | |
7523 | ||
06edf0c0 PA |
7524 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7525 | &internal_breakpoint_ops); | |
04086b45 | 7526 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7527 | return b; |
7528 | } | |
7529 | ||
04086b45 PA |
7530 | struct breakpoint * |
7531 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7532 | { | |
7533 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7534 | } | |
7535 | ||
f37f681c PA |
7536 | /* See breakpoint.h. */ |
7537 | ||
7538 | struct breakpoint * | |
7539 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7540 | { | |
7541 | struct breakpoint *b; | |
7542 | ||
04086b45 PA |
7543 | /* Explicitly tell update_global_location_list to insert |
7544 | locations. */ | |
7545 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7546 | if (!b->loc->inserted) |
7547 | { | |
7548 | delete_breakpoint (b); | |
7549 | return NULL; | |
7550 | } | |
7551 | return b; | |
7552 | } | |
7553 | ||
cae688ec JJ |
7554 | /* Disable any breakpoints that are on code in shared libraries. Only |
7555 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7556 | ||
7557 | void | |
cb851954 | 7558 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7559 | { |
876fa593 | 7560 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7561 | |
876fa593 | 7562 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7563 | { |
2bdf28a0 | 7564 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7565 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7566 | |
4a64f543 MS |
7567 | /* We apply the check to all breakpoints, including disabled for |
7568 | those with loc->duplicate set. This is so that when breakpoint | |
7569 | becomes enabled, or the duplicate is removed, gdb will try to | |
7570 | insert all breakpoints. If we don't set shlib_disabled here, | |
7571 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7572 | if (((b->type == bp_breakpoint) |
508ccb1f | 7573 | || (b->type == bp_jit_event) |
1042e4c0 | 7574 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7575 | || (is_tracepoint (b))) |
6c95b8df | 7576 | && loc->pspace == current_program_space |
0d381245 | 7577 | && !loc->shlib_disabled |
6c95b8df | 7578 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7579 | ) |
0d381245 VP |
7580 | { |
7581 | loc->shlib_disabled = 1; | |
7582 | } | |
cae688ec JJ |
7583 | } |
7584 | } | |
7585 | ||
63644780 NB |
7586 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7587 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7588 | disabled ones can just stay disabled. */ | |
84acb35a | 7589 | |
75149521 | 7590 | static void |
84acb35a JJ |
7591 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7592 | { | |
876fa593 | 7593 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7594 | int disabled_shlib_breaks = 0; |
7595 | ||
876fa593 | 7596 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7597 | { |
2bdf28a0 | 7598 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7599 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7600 | |
1e4d1764 | 7601 | if (solib->pspace == loc->pspace |
e2dd7057 | 7602 | && !loc->shlib_disabled |
1e4d1764 YQ |
7603 | && (((b->type == bp_breakpoint |
7604 | || b->type == bp_jit_event | |
7605 | || b->type == bp_hardware_breakpoint) | |
7606 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7607 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7608 | || is_tracepoint (b)) | |
e2dd7057 | 7609 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7610 | { |
e2dd7057 PP |
7611 | loc->shlib_disabled = 1; |
7612 | /* At this point, we cannot rely on remove_breakpoint | |
7613 | succeeding so we must mark the breakpoint as not inserted | |
7614 | to prevent future errors occurring in remove_breakpoints. */ | |
7615 | loc->inserted = 0; | |
8d3788bd VP |
7616 | |
7617 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7618 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7619 | |
e2dd7057 PP |
7620 | if (!disabled_shlib_breaks) |
7621 | { | |
223ffa71 | 7622 | target_terminal::ours_for_output (); |
3e43a32a MS |
7623 | warning (_("Temporarily disabling breakpoints " |
7624 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7625 | solib->so_name); |
84acb35a | 7626 | } |
e2dd7057 | 7627 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7628 | } |
7629 | } | |
84acb35a JJ |
7630 | } |
7631 | ||
63644780 NB |
7632 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7633 | notification of free_objfile. Only apply to enabled breakpoints, | |
7634 | disabled ones can just stay disabled. */ | |
7635 | ||
7636 | static void | |
7637 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7638 | { | |
7639 | struct breakpoint *b; | |
7640 | ||
7641 | if (objfile == NULL) | |
7642 | return; | |
7643 | ||
d03de421 PA |
7644 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7645 | managed by the user with add-symbol-file/remove-symbol-file. | |
7646 | Similarly to how breakpoints in shared libraries are handled in | |
7647 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7648 | shlib_disabled so they end up uninserted on the next global |
7649 | location list update. Shared libraries not loaded by the user | |
7650 | aren't handled here -- they're already handled in | |
7651 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7652 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7653 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7654 | main objfile). */ | |
7655 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7656 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7657 | return; |
7658 | ||
7659 | ALL_BREAKPOINTS (b) | |
7660 | { | |
7661 | struct bp_location *loc; | |
7662 | int bp_modified = 0; | |
7663 | ||
7664 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7665 | continue; | |
7666 | ||
7667 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7668 | { | |
7669 | CORE_ADDR loc_addr = loc->address; | |
7670 | ||
7671 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7672 | && loc->loc_type != bp_loc_software_breakpoint) | |
7673 | continue; | |
7674 | ||
7675 | if (loc->shlib_disabled != 0) | |
7676 | continue; | |
7677 | ||
7678 | if (objfile->pspace != loc->pspace) | |
7679 | continue; | |
7680 | ||
7681 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7682 | && loc->loc_type != bp_loc_software_breakpoint) | |
7683 | continue; | |
7684 | ||
7685 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7686 | { | |
7687 | loc->shlib_disabled = 1; | |
08351840 PA |
7688 | /* At this point, we don't know whether the object was |
7689 | unmapped from the inferior or not, so leave the | |
7690 | inserted flag alone. We'll handle failure to | |
7691 | uninsert quietly, in case the object was indeed | |
7692 | unmapped. */ | |
63644780 NB |
7693 | |
7694 | mark_breakpoint_location_modified (loc); | |
7695 | ||
7696 | bp_modified = 1; | |
7697 | } | |
7698 | } | |
7699 | ||
7700 | if (bp_modified) | |
76727919 | 7701 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7702 | } |
7703 | } | |
7704 | ||
ce78b96d JB |
7705 | /* FORK & VFORK catchpoints. */ |
7706 | ||
e29a4733 | 7707 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7708 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7709 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7710 | |
c1fc2657 | 7711 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7712 | { |
e29a4733 PA |
7713 | /* Process id of a child process whose forking triggered this |
7714 | catchpoint. This field is only valid immediately after this | |
7715 | catchpoint has triggered. */ | |
7716 | ptid_t forked_inferior_pid; | |
7717 | }; | |
7718 | ||
4a64f543 MS |
7719 | /* Implement the "insert" breakpoint_ops method for fork |
7720 | catchpoints. */ | |
ce78b96d | 7721 | |
77b06cd7 TJB |
7722 | static int |
7723 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7724 | { |
dfd4cc63 | 7725 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7726 | } |
7727 | ||
4a64f543 MS |
7728 | /* Implement the "remove" breakpoint_ops method for fork |
7729 | catchpoints. */ | |
ce78b96d JB |
7730 | |
7731 | static int | |
73971819 | 7732 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7733 | { |
dfd4cc63 | 7734 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7735 | } |
7736 | ||
7737 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7738 | catchpoints. */ | |
7739 | ||
7740 | static int | |
f1310107 | 7741 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7742 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7743 | const struct target_waitstatus *ws) |
ce78b96d | 7744 | { |
e29a4733 PA |
7745 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7746 | ||
f90263c1 TT |
7747 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7748 | return 0; | |
7749 | ||
7750 | c->forked_inferior_pid = ws->value.related_pid; | |
7751 | return 1; | |
ce78b96d JB |
7752 | } |
7753 | ||
4a64f543 MS |
7754 | /* Implement the "print_it" breakpoint_ops method for fork |
7755 | catchpoints. */ | |
ce78b96d JB |
7756 | |
7757 | static enum print_stop_action | |
348d480f | 7758 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7759 | { |
36dfb11c | 7760 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7761 | struct breakpoint *b = bs->breakpoint_at; |
7762 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7763 | |
ce78b96d | 7764 | annotate_catchpoint (b->number); |
f303dbd6 | 7765 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7766 | if (b->disposition == disp_del) |
112e8700 | 7767 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7768 | else |
112e8700 SM |
7769 | uiout->text ("Catchpoint "); |
7770 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7771 | { |
112e8700 SM |
7772 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7773 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7774 | } |
112e8700 SM |
7775 | uiout->field_int ("bkptno", b->number); |
7776 | uiout->text (" (forked process "); | |
7777 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7778 | uiout->text ("), "); | |
ce78b96d JB |
7779 | return PRINT_SRC_AND_LOC; |
7780 | } | |
7781 | ||
4a64f543 MS |
7782 | /* Implement the "print_one" breakpoint_ops method for fork |
7783 | catchpoints. */ | |
ce78b96d JB |
7784 | |
7785 | static void | |
a6d9a66e | 7786 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7787 | { |
e29a4733 | 7788 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7789 | struct value_print_options opts; |
79a45e25 | 7790 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7791 | |
7792 | get_user_print_options (&opts); | |
7793 | ||
4a64f543 MS |
7794 | /* Field 4, the address, is omitted (which makes the columns not |
7795 | line up too nicely with the headers, but the effect is relatively | |
7796 | readable). */ | |
79a45b7d | 7797 | if (opts.addressprint) |
112e8700 | 7798 | uiout->field_skip ("addr"); |
ce78b96d | 7799 | annotate_field (5); |
112e8700 | 7800 | uiout->text ("fork"); |
e29a4733 | 7801 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7802 | { |
112e8700 SM |
7803 | uiout->text (", process "); |
7804 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7805 | uiout->spaces (1); | |
ce78b96d | 7806 | } |
8ac3646f | 7807 | |
112e8700 SM |
7808 | if (uiout->is_mi_like_p ()) |
7809 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7810 | } |
7811 | ||
7812 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7813 | catchpoints. */ | |
7814 | ||
7815 | static void | |
7816 | print_mention_catch_fork (struct breakpoint *b) | |
7817 | { | |
7818 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7819 | } | |
7820 | ||
6149aea9 PA |
7821 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7822 | catchpoints. */ | |
7823 | ||
7824 | static void | |
7825 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7826 | { | |
7827 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7828 | print_recreate_thread (b, fp); |
6149aea9 PA |
7829 | } |
7830 | ||
ce78b96d JB |
7831 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7832 | ||
2060206e | 7833 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7834 | |
4a64f543 MS |
7835 | /* Implement the "insert" breakpoint_ops method for vfork |
7836 | catchpoints. */ | |
ce78b96d | 7837 | |
77b06cd7 TJB |
7838 | static int |
7839 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7840 | { |
dfd4cc63 | 7841 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7842 | } |
7843 | ||
4a64f543 MS |
7844 | /* Implement the "remove" breakpoint_ops method for vfork |
7845 | catchpoints. */ | |
ce78b96d JB |
7846 | |
7847 | static int | |
73971819 | 7848 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7849 | { |
dfd4cc63 | 7850 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7851 | } |
7852 | ||
7853 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7854 | catchpoints. */ | |
7855 | ||
7856 | static int | |
f1310107 | 7857 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7858 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7859 | const struct target_waitstatus *ws) |
ce78b96d | 7860 | { |
e29a4733 PA |
7861 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7862 | ||
f90263c1 TT |
7863 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7864 | return 0; | |
7865 | ||
7866 | c->forked_inferior_pid = ws->value.related_pid; | |
7867 | return 1; | |
ce78b96d JB |
7868 | } |
7869 | ||
4a64f543 MS |
7870 | /* Implement the "print_it" breakpoint_ops method for vfork |
7871 | catchpoints. */ | |
ce78b96d JB |
7872 | |
7873 | static enum print_stop_action | |
348d480f | 7874 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7875 | { |
36dfb11c | 7876 | struct ui_out *uiout = current_uiout; |
348d480f | 7877 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7878 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7879 | ||
ce78b96d | 7880 | annotate_catchpoint (b->number); |
f303dbd6 | 7881 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7882 | if (b->disposition == disp_del) |
112e8700 | 7883 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7884 | else |
112e8700 SM |
7885 | uiout->text ("Catchpoint "); |
7886 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7887 | { |
112e8700 SM |
7888 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7889 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7890 | } |
112e8700 SM |
7891 | uiout->field_int ("bkptno", b->number); |
7892 | uiout->text (" (vforked process "); | |
7893 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7894 | uiout->text ("), "); | |
ce78b96d JB |
7895 | return PRINT_SRC_AND_LOC; |
7896 | } | |
7897 | ||
4a64f543 MS |
7898 | /* Implement the "print_one" breakpoint_ops method for vfork |
7899 | catchpoints. */ | |
ce78b96d JB |
7900 | |
7901 | static void | |
a6d9a66e | 7902 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7903 | { |
e29a4733 | 7904 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7905 | struct value_print_options opts; |
79a45e25 | 7906 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7907 | |
7908 | get_user_print_options (&opts); | |
4a64f543 MS |
7909 | /* Field 4, the address, is omitted (which makes the columns not |
7910 | line up too nicely with the headers, but the effect is relatively | |
7911 | readable). */ | |
79a45b7d | 7912 | if (opts.addressprint) |
112e8700 | 7913 | uiout->field_skip ("addr"); |
ce78b96d | 7914 | annotate_field (5); |
112e8700 | 7915 | uiout->text ("vfork"); |
e29a4733 | 7916 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7917 | { |
112e8700 SM |
7918 | uiout->text (", process "); |
7919 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7920 | uiout->spaces (1); | |
ce78b96d | 7921 | } |
8ac3646f | 7922 | |
112e8700 SM |
7923 | if (uiout->is_mi_like_p ()) |
7924 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7925 | } |
7926 | ||
7927 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7928 | catchpoints. */ | |
7929 | ||
7930 | static void | |
7931 | print_mention_catch_vfork (struct breakpoint *b) | |
7932 | { | |
7933 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7934 | } | |
7935 | ||
6149aea9 PA |
7936 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7937 | catchpoints. */ | |
7938 | ||
7939 | static void | |
7940 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7941 | { | |
7942 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7943 | print_recreate_thread (b, fp); |
6149aea9 PA |
7944 | } |
7945 | ||
ce78b96d JB |
7946 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7947 | ||
2060206e | 7948 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7949 | |
edcc5120 | 7950 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7951 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7952 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7953 | ||
c1fc2657 | 7954 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7955 | { |
c1fc2657 | 7956 | ~solib_catchpoint () override; |
edcc5120 TT |
7957 | |
7958 | /* True for "catch load", false for "catch unload". */ | |
7959 | unsigned char is_load; | |
7960 | ||
7961 | /* Regular expression to match, if any. COMPILED is only valid when | |
7962 | REGEX is non-NULL. */ | |
7963 | char *regex; | |
2d7cc5c7 | 7964 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7965 | }; |
7966 | ||
c1fc2657 | 7967 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7968 | { |
c1fc2657 | 7969 | xfree (this->regex); |
edcc5120 TT |
7970 | } |
7971 | ||
7972 | static int | |
7973 | insert_catch_solib (struct bp_location *ignore) | |
7974 | { | |
7975 | return 0; | |
7976 | } | |
7977 | ||
7978 | static int | |
73971819 | 7979 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7980 | { |
7981 | return 0; | |
7982 | } | |
7983 | ||
7984 | static int | |
7985 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7986 | const address_space *aspace, |
edcc5120 TT |
7987 | CORE_ADDR bp_addr, |
7988 | const struct target_waitstatus *ws) | |
7989 | { | |
7990 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7991 | struct breakpoint *other; | |
7992 | ||
7993 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7994 | return 1; | |
7995 | ||
7996 | ALL_BREAKPOINTS (other) | |
7997 | { | |
7998 | struct bp_location *other_bl; | |
7999 | ||
8000 | if (other == bl->owner) | |
8001 | continue; | |
8002 | ||
8003 | if (other->type != bp_shlib_event) | |
8004 | continue; | |
8005 | ||
c1fc2657 | 8006 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8007 | continue; |
8008 | ||
8009 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8010 | { | |
8011 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8012 | return 1; | |
8013 | } | |
8014 | } | |
8015 | ||
8016 | return 0; | |
8017 | } | |
8018 | ||
8019 | static void | |
8020 | check_status_catch_solib (struct bpstats *bs) | |
8021 | { | |
8022 | struct solib_catchpoint *self | |
8023 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8024 | |
8025 | if (self->is_load) | |
8026 | { | |
8027 | struct so_list *iter; | |
8028 | ||
6fb16ce6 | 8029 | for (int ix = 0; |
edcc5120 TT |
8030 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, |
8031 | ix, iter); | |
8032 | ++ix) | |
8033 | { | |
8034 | if (!self->regex | |
2d7cc5c7 | 8035 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8036 | return; |
8037 | } | |
8038 | } | |
8039 | else | |
8040 | { | |
6fb16ce6 | 8041 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8042 | { |
8043 | if (!self->regex | |
6fb16ce6 | 8044 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8045 | return; |
8046 | } | |
8047 | } | |
8048 | ||
8049 | bs->stop = 0; | |
8050 | bs->print_it = print_it_noop; | |
8051 | } | |
8052 | ||
8053 | static enum print_stop_action | |
8054 | print_it_catch_solib (bpstat bs) | |
8055 | { | |
8056 | struct breakpoint *b = bs->breakpoint_at; | |
8057 | struct ui_out *uiout = current_uiout; | |
8058 | ||
8059 | annotate_catchpoint (b->number); | |
f303dbd6 | 8060 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8061 | if (b->disposition == disp_del) |
112e8700 | 8062 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8063 | else |
112e8700 SM |
8064 | uiout->text ("Catchpoint "); |
8065 | uiout->field_int ("bkptno", b->number); | |
8066 | uiout->text ("\n"); | |
8067 | if (uiout->is_mi_like_p ()) | |
8068 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8069 | print_solib_event (1); |
8070 | return PRINT_SRC_AND_LOC; | |
8071 | } | |
8072 | ||
8073 | static void | |
8074 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8075 | { | |
8076 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8077 | struct value_print_options opts; | |
8078 | struct ui_out *uiout = current_uiout; | |
8079 | char *msg; | |
8080 | ||
8081 | get_user_print_options (&opts); | |
8082 | /* Field 4, the address, is omitted (which makes the columns not | |
8083 | line up too nicely with the headers, but the effect is relatively | |
8084 | readable). */ | |
8085 | if (opts.addressprint) | |
8086 | { | |
8087 | annotate_field (4); | |
112e8700 | 8088 | uiout->field_skip ("addr"); |
edcc5120 TT |
8089 | } |
8090 | ||
8091 | annotate_field (5); | |
8092 | if (self->is_load) | |
8093 | { | |
8094 | if (self->regex) | |
8095 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8096 | else | |
8097 | msg = xstrdup (_("load of library")); | |
8098 | } | |
8099 | else | |
8100 | { | |
8101 | if (self->regex) | |
8102 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8103 | else | |
8104 | msg = xstrdup (_("unload of library")); | |
8105 | } | |
112e8700 | 8106 | uiout->field_string ("what", msg); |
edcc5120 | 8107 | xfree (msg); |
8ac3646f | 8108 | |
112e8700 SM |
8109 | if (uiout->is_mi_like_p ()) |
8110 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8111 | } |
8112 | ||
8113 | static void | |
8114 | print_mention_catch_solib (struct breakpoint *b) | |
8115 | { | |
8116 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8117 | ||
8118 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8119 | self->is_load ? "load" : "unload"); | |
8120 | } | |
8121 | ||
8122 | static void | |
8123 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8124 | { | |
8125 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8126 | ||
8127 | fprintf_unfiltered (fp, "%s %s", | |
8128 | b->disposition == disp_del ? "tcatch" : "catch", | |
8129 | self->is_load ? "load" : "unload"); | |
8130 | if (self->regex) | |
8131 | fprintf_unfiltered (fp, " %s", self->regex); | |
8132 | fprintf_unfiltered (fp, "\n"); | |
8133 | } | |
8134 | ||
8135 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8136 | ||
91985142 MG |
8137 | /* Shared helper function (MI and CLI) for creating and installing |
8138 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8139 | the events to be caught are load events, otherwise they are | |
8140 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8141 | temporary one. If ENABLED is non-zero the catchpoint is | |
8142 | created in an enabled state. */ | |
edcc5120 | 8143 | |
91985142 | 8144 | void |
a121b7c1 | 8145 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8146 | { |
edcc5120 | 8147 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8148 | |
edcc5120 TT |
8149 | if (!arg) |
8150 | arg = ""; | |
f1735a53 | 8151 | arg = skip_spaces (arg); |
edcc5120 | 8152 | |
36bd8eaa | 8153 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8154 | |
8155 | if (*arg != '\0') | |
8156 | { | |
2d7cc5c7 PA |
8157 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8158 | _("Invalid regexp"))); | |
edcc5120 TT |
8159 | c->regex = xstrdup (arg); |
8160 | } | |
8161 | ||
8162 | c->is_load = is_load; | |
36bd8eaa | 8163 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8164 | &catch_solib_breakpoint_ops); |
8165 | ||
c1fc2657 | 8166 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8167 | |
b270e6f9 | 8168 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8169 | } |
8170 | ||
91985142 MG |
8171 | /* A helper function that does all the work for "catch load" and |
8172 | "catch unload". */ | |
8173 | ||
8174 | static void | |
eb4c3f4a | 8175 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8176 | struct cmd_list_element *command) |
8177 | { | |
8178 | int tempflag; | |
8179 | const int enabled = 1; | |
8180 | ||
8181 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8182 | ||
8183 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8184 | } | |
8185 | ||
edcc5120 | 8186 | static void |
eb4c3f4a | 8187 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8188 | struct cmd_list_element *command) |
8189 | { | |
8190 | catch_load_or_unload (arg, from_tty, 1, command); | |
8191 | } | |
8192 | ||
8193 | static void | |
eb4c3f4a | 8194 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8195 | struct cmd_list_element *command) |
8196 | { | |
8197 | catch_load_or_unload (arg, from_tty, 0, command); | |
8198 | } | |
8199 | ||
346774a9 PA |
8200 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8201 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8202 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8203 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8204 | |
ab04a2af | 8205 | void |
346774a9 PA |
8206 | init_catchpoint (struct breakpoint *b, |
8207 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8208 | const char *cond_string, |
c0a91b2b | 8209 | const struct breakpoint_ops *ops) |
c906108c | 8210 | { |
51abb421 | 8211 | symtab_and_line sal; |
6c95b8df | 8212 | sal.pspace = current_program_space; |
c5aa993b | 8213 | |
28010a5d | 8214 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8215 | |
1b36a34b | 8216 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8217 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8218 | } |
8219 | ||
28010a5d | 8220 | void |
b270e6f9 | 8221 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8222 | { |
b270e6f9 | 8223 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8224 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8225 | if (is_tracepoint (b)) |
8226 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8227 | if (!internal) |
8228 | mention (b); | |
76727919 | 8229 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8230 | |
8231 | if (update_gll) | |
44702360 | 8232 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8233 | } |
8234 | ||
9b70b993 | 8235 | static void |
a6d9a66e | 8236 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8237 | int tempflag, const char *cond_string, |
c0a91b2b | 8238 | const struct breakpoint_ops *ops) |
c906108c | 8239 | { |
b270e6f9 | 8240 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8241 | |
b270e6f9 | 8242 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8243 | |
8244 | c->forked_inferior_pid = null_ptid; | |
8245 | ||
b270e6f9 | 8246 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8247 | } |
8248 | ||
fe798b75 JB |
8249 | /* Exec catchpoints. */ |
8250 | ||
b4d90040 | 8251 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8252 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8253 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8254 | ||
c1fc2657 | 8255 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8256 | { |
c1fc2657 | 8257 | ~exec_catchpoint () override; |
b4d90040 PA |
8258 | |
8259 | /* Filename of a program whose exec triggered this catchpoint. | |
8260 | This field is only valid immediately after this catchpoint has | |
8261 | triggered. */ | |
8262 | char *exec_pathname; | |
8263 | }; | |
8264 | ||
c1fc2657 | 8265 | /* Exec catchpoint destructor. */ |
b4d90040 | 8266 | |
c1fc2657 | 8267 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8268 | { |
c1fc2657 | 8269 | xfree (this->exec_pathname); |
b4d90040 PA |
8270 | } |
8271 | ||
77b06cd7 TJB |
8272 | static int |
8273 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8274 | { |
dfd4cc63 | 8275 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8276 | } |
c906108c | 8277 | |
fe798b75 | 8278 | static int |
73971819 | 8279 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8280 | { |
dfd4cc63 | 8281 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8282 | } |
c906108c | 8283 | |
fe798b75 | 8284 | static int |
f1310107 | 8285 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8286 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8287 | const struct target_waitstatus *ws) |
fe798b75 | 8288 | { |
b4d90040 PA |
8289 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8290 | ||
f90263c1 TT |
8291 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8292 | return 0; | |
8293 | ||
8294 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8295 | return 1; | |
fe798b75 | 8296 | } |
c906108c | 8297 | |
fe798b75 | 8298 | static enum print_stop_action |
348d480f | 8299 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8300 | { |
36dfb11c | 8301 | struct ui_out *uiout = current_uiout; |
348d480f | 8302 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8303 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8304 | ||
fe798b75 | 8305 | annotate_catchpoint (b->number); |
f303dbd6 | 8306 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8307 | if (b->disposition == disp_del) |
112e8700 | 8308 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8309 | else |
112e8700 SM |
8310 | uiout->text ("Catchpoint "); |
8311 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8312 | { |
112e8700 SM |
8313 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8314 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8315 | } |
112e8700 SM |
8316 | uiout->field_int ("bkptno", b->number); |
8317 | uiout->text (" (exec'd "); | |
8318 | uiout->field_string ("new-exec", c->exec_pathname); | |
8319 | uiout->text ("), "); | |
36dfb11c | 8320 | |
fe798b75 | 8321 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8322 | } |
8323 | ||
fe798b75 | 8324 | static void |
a6d9a66e | 8325 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8326 | { |
b4d90040 | 8327 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8328 | struct value_print_options opts; |
79a45e25 | 8329 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8330 | |
8331 | get_user_print_options (&opts); | |
8332 | ||
8333 | /* Field 4, the address, is omitted (which makes the columns | |
8334 | not line up too nicely with the headers, but the effect | |
8335 | is relatively readable). */ | |
8336 | if (opts.addressprint) | |
112e8700 | 8337 | uiout->field_skip ("addr"); |
fe798b75 | 8338 | annotate_field (5); |
112e8700 | 8339 | uiout->text ("exec"); |
b4d90040 | 8340 | if (c->exec_pathname != NULL) |
fe798b75 | 8341 | { |
112e8700 SM |
8342 | uiout->text (", program \""); |
8343 | uiout->field_string ("what", c->exec_pathname); | |
8344 | uiout->text ("\" "); | |
fe798b75 | 8345 | } |
8ac3646f | 8346 | |
112e8700 SM |
8347 | if (uiout->is_mi_like_p ()) |
8348 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8349 | } |
8350 | ||
8351 | static void | |
8352 | print_mention_catch_exec (struct breakpoint *b) | |
8353 | { | |
8354 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8355 | } | |
8356 | ||
6149aea9 PA |
8357 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8358 | catchpoints. */ | |
8359 | ||
8360 | static void | |
8361 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8362 | { | |
8363 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8364 | print_recreate_thread (b, fp); |
6149aea9 PA |
8365 | } |
8366 | ||
2060206e | 8367 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8368 | |
c906108c | 8369 | static int |
fba45db2 | 8370 | hw_breakpoint_used_count (void) |
c906108c | 8371 | { |
c906108c | 8372 | int i = 0; |
f1310107 TJB |
8373 | struct breakpoint *b; |
8374 | struct bp_location *bl; | |
c906108c SS |
8375 | |
8376 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8377 | { |
d6b74ac4 | 8378 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8379 | for (bl = b->loc; bl; bl = bl->next) |
8380 | { | |
8381 | /* Special types of hardware breakpoints may use more than | |
8382 | one register. */ | |
348d480f | 8383 | i += b->ops->resources_needed (bl); |
f1310107 | 8384 | } |
c5aa993b | 8385 | } |
c906108c SS |
8386 | |
8387 | return i; | |
8388 | } | |
8389 | ||
a1398e0c PA |
8390 | /* Returns the resources B would use if it were a hardware |
8391 | watchpoint. */ | |
8392 | ||
c906108c | 8393 | static int |
a1398e0c | 8394 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8395 | { |
c906108c | 8396 | int i = 0; |
e09342b5 | 8397 | struct bp_location *bl; |
c906108c | 8398 | |
a1398e0c PA |
8399 | if (!breakpoint_enabled (b)) |
8400 | return 0; | |
8401 | ||
8402 | for (bl = b->loc; bl; bl = bl->next) | |
8403 | { | |
8404 | /* Special types of hardware watchpoints may use more than | |
8405 | one register. */ | |
8406 | i += b->ops->resources_needed (bl); | |
8407 | } | |
8408 | ||
8409 | return i; | |
8410 | } | |
8411 | ||
8412 | /* Returns the sum the used resources of all hardware watchpoints of | |
8413 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8414 | the sum of the used resources of all hardware watchpoints of other | |
8415 | types _not_ TYPE. */ | |
8416 | ||
8417 | static int | |
8418 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8419 | enum bptype type, int *other_type_used) | |
8420 | { | |
8421 | int i = 0; | |
8422 | struct breakpoint *b; | |
8423 | ||
c906108c SS |
8424 | *other_type_used = 0; |
8425 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8426 | { |
a1398e0c PA |
8427 | if (b == except) |
8428 | continue; | |
e09342b5 TJB |
8429 | if (!breakpoint_enabled (b)) |
8430 | continue; | |
8431 | ||
a1398e0c PA |
8432 | if (b->type == type) |
8433 | i += hw_watchpoint_use_count (b); | |
8434 | else if (is_hardware_watchpoint (b)) | |
8435 | *other_type_used = 1; | |
e09342b5 TJB |
8436 | } |
8437 | ||
c906108c SS |
8438 | return i; |
8439 | } | |
8440 | ||
c906108c | 8441 | void |
fba45db2 | 8442 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8443 | { |
c5aa993b | 8444 | struct breakpoint *b; |
c906108c SS |
8445 | |
8446 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8447 | { |
cc60f2e3 | 8448 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8449 | { |
b5de0fa7 | 8450 | b->enable_state = bp_call_disabled; |
44702360 | 8451 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8452 | } |
8453 | } | |
c906108c SS |
8454 | } |
8455 | ||
8456 | void | |
fba45db2 | 8457 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8458 | { |
c5aa993b | 8459 | struct breakpoint *b; |
c906108c SS |
8460 | |
8461 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8462 | { |
cc60f2e3 | 8463 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8464 | { |
b5de0fa7 | 8465 | b->enable_state = bp_enabled; |
44702360 | 8466 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8467 | } |
8468 | } | |
c906108c SS |
8469 | } |
8470 | ||
8bea4e01 UW |
8471 | void |
8472 | disable_breakpoints_before_startup (void) | |
8473 | { | |
6c95b8df | 8474 | current_program_space->executing_startup = 1; |
44702360 | 8475 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8476 | } |
8477 | ||
8478 | void | |
8479 | enable_breakpoints_after_startup (void) | |
8480 | { | |
6c95b8df | 8481 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8482 | breakpoint_re_set (); |
8bea4e01 UW |
8483 | } |
8484 | ||
7c16b83e PA |
8485 | /* Create a new single-step breakpoint for thread THREAD, with no |
8486 | locations. */ | |
c906108c | 8487 | |
7c16b83e PA |
8488 | static struct breakpoint * |
8489 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8490 | { | |
b270e6f9 | 8491 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8492 | |
b270e6f9 | 8493 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8494 | &momentary_breakpoint_ops); |
8495 | ||
8496 | b->disposition = disp_donttouch; | |
8497 | b->frame_id = null_frame_id; | |
8498 | ||
8499 | b->thread = thread; | |
8500 | gdb_assert (b->thread != 0); | |
8501 | ||
b270e6f9 | 8502 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8503 | } |
8504 | ||
8505 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8506 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8507 | frame. */ | |
c906108c | 8508 | |
454dafbd | 8509 | breakpoint_up |
a6d9a66e UW |
8510 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8511 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8512 | { |
52f0bd74 | 8513 | struct breakpoint *b; |
edb3359d | 8514 | |
193facb3 JK |
8515 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8516 | tail-called one. */ | |
8517 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8518 | |
06edf0c0 | 8519 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8520 | b->enable_state = bp_enabled; |
8521 | b->disposition = disp_donttouch; | |
818dd999 | 8522 | b->frame_id = frame_id; |
c906108c | 8523 | |
4a64f543 MS |
8524 | /* If we're debugging a multi-threaded program, then we want |
8525 | momentary breakpoints to be active in only a single thread of | |
8526 | control. */ | |
39f77062 | 8527 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8528 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8529 | |
44702360 | 8530 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8531 | |
454dafbd | 8532 | return breakpoint_up (b); |
c906108c | 8533 | } |
611c83ae | 8534 | |
06edf0c0 | 8535 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8536 | The new breakpoint will have type TYPE, use OPS as its |
8537 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8538 | |
06edf0c0 PA |
8539 | static struct breakpoint * |
8540 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8541 | enum bptype type, | |
a1aa2221 LM |
8542 | const struct breakpoint_ops *ops, |
8543 | int loc_enabled) | |
e58b0e63 PA |
8544 | { |
8545 | struct breakpoint *copy; | |
8546 | ||
06edf0c0 | 8547 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8548 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8549 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8550 | |
a6d9a66e | 8551 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8552 | copy->loc->requested_address = orig->loc->requested_address; |
8553 | copy->loc->address = orig->loc->address; | |
8554 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8555 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8556 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8557 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8558 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8559 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8560 | copy->frame_id = orig->frame_id; |
8561 | copy->thread = orig->thread; | |
6c95b8df | 8562 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8563 | |
8564 | copy->enable_state = bp_enabled; | |
8565 | copy->disposition = disp_donttouch; | |
8566 | copy->number = internal_breakpoint_number--; | |
8567 | ||
44702360 | 8568 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8569 | return copy; |
8570 | } | |
8571 | ||
06edf0c0 PA |
8572 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8573 | ORIG is NULL. */ | |
8574 | ||
8575 | struct breakpoint * | |
8576 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8577 | { | |
8578 | /* If there's nothing to clone, then return nothing. */ | |
8579 | if (orig == NULL) | |
8580 | return NULL; | |
8581 | ||
a1aa2221 | 8582 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8583 | } |
8584 | ||
454dafbd | 8585 | breakpoint_up |
a6d9a66e UW |
8586 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8587 | enum bptype type) | |
611c83ae PA |
8588 | { |
8589 | struct symtab_and_line sal; | |
8590 | ||
8591 | sal = find_pc_line (pc, 0); | |
8592 | sal.pc = pc; | |
8593 | sal.section = find_pc_overlay (pc); | |
8594 | sal.explicit_pc = 1; | |
8595 | ||
a6d9a66e | 8596 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8597 | } |
c906108c | 8598 | \f |
c5aa993b | 8599 | |
c906108c SS |
8600 | /* Tell the user we have just set a breakpoint B. */ |
8601 | ||
8602 | static void | |
fba45db2 | 8603 | mention (struct breakpoint *b) |
c906108c | 8604 | { |
348d480f | 8605 | b->ops->print_mention (b); |
112e8700 | 8606 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8607 | return; |
c906108c SS |
8608 | printf_filtered ("\n"); |
8609 | } | |
c906108c | 8610 | \f |
c5aa993b | 8611 | |
1a853c52 PA |
8612 | static int bp_loc_is_permanent (struct bp_location *loc); |
8613 | ||
0d381245 | 8614 | static struct bp_location * |
39d61571 | 8615 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8616 | const struct symtab_and_line *sal) |
8617 | { | |
8618 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8619 | CORE_ADDR adjusted_address; |
8620 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8621 | ||
8622 | if (loc_gdbarch == NULL) | |
8623 | loc_gdbarch = b->gdbarch; | |
8624 | ||
8625 | /* Adjust the breakpoint's address prior to allocating a location. | |
8626 | Once we call allocate_bp_location(), that mostly uninitialized | |
8627 | location will be placed on the location chain. Adjustment of the | |
8628 | breakpoint may cause target_read_memory() to be called and we do | |
8629 | not want its scan of the location chain to find a breakpoint and | |
8630 | location that's only been partially initialized. */ | |
8631 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8632 | sal->pc, b->type); | |
0d381245 | 8633 | |
d30113d4 | 8634 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8635 | loc = allocate_bp_location (b); |
d30113d4 JK |
8636 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8637 | tmp = &((*tmp)->next)) | |
0d381245 | 8638 | ; |
d30113d4 | 8639 | loc->next = *tmp; |
0d381245 | 8640 | *tmp = loc; |
3742cc8b | 8641 | |
0d381245 | 8642 | loc->requested_address = sal->pc; |
3742cc8b | 8643 | loc->address = adjusted_address; |
6c95b8df | 8644 | loc->pspace = sal->pspace; |
935676c9 | 8645 | loc->probe.prob = sal->prob; |
729662a5 | 8646 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8647 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8648 | loc->section = sal->section; |
3742cc8b | 8649 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8650 | loc->line_number = sal->line; |
2f202fde | 8651 | loc->symtab = sal->symtab; |
4a27f119 | 8652 | loc->symbol = sal->symbol; |
f8eba3c6 | 8653 | |
0e30163f JK |
8654 | set_breakpoint_location_function (loc, |
8655 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8656 | |
6ae88661 LM |
8657 | /* While by definition, permanent breakpoints are already present in the |
8658 | code, we don't mark the location as inserted. Normally one would expect | |
8659 | that GDB could rely on that breakpoint instruction to stop the program, | |
8660 | thus removing the need to insert its own breakpoint, except that executing | |
8661 | the breakpoint instruction can kill the target instead of reporting a | |
8662 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8663 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8664 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8665 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8666 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8667 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8668 | it manually increments the PC, thus avoiding executing the breakpoint | |
8669 | instruction.) */ | |
1a853c52 | 8670 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8671 | loc->permanent = 1; |
1a853c52 | 8672 | |
0d381245 VP |
8673 | return loc; |
8674 | } | |
514f746b AR |
8675 | \f |
8676 | ||
1cf4d951 | 8677 | /* See breakpoint.h. */ |
514f746b | 8678 | |
1cf4d951 PA |
8679 | int |
8680 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8681 | { |
8682 | int len; | |
8683 | CORE_ADDR addr; | |
1afeeb75 | 8684 | const gdb_byte *bpoint; |
514f746b AR |
8685 | gdb_byte *target_mem; |
8686 | ||
1cf4d951 PA |
8687 | addr = address; |
8688 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8689 | ||
8690 | /* Software breakpoints unsupported? */ | |
8691 | if (bpoint == NULL) | |
8692 | return 0; | |
8693 | ||
224c3ddb | 8694 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8695 | |
8696 | /* Enable the automatic memory restoration from breakpoints while | |
8697 | we read the memory. Otherwise we could say about our temporary | |
8698 | breakpoints they are permanent. */ | |
cb85b21b TT |
8699 | scoped_restore restore_memory |
8700 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8701 | |
8702 | if (target_read_memory (address, target_mem, len) == 0 | |
8703 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8704 | return 1; |
1cf4d951 | 8705 | |
cb85b21b | 8706 | return 0; |
1cf4d951 PA |
8707 | } |
8708 | ||
8709 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8710 | return 0 otherwise. */ | |
8711 | ||
8712 | static int | |
8713 | bp_loc_is_permanent (struct bp_location *loc) | |
8714 | { | |
514f746b AR |
8715 | gdb_assert (loc != NULL); |
8716 | ||
244558af LM |
8717 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8718 | attempt to read from the addresses the locations of these breakpoint types | |
8719 | point to. program_breakpoint_here_p, below, will attempt to read | |
8720 | memory. */ | |
8721 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8722 | return 0; | |
8723 | ||
5ed8105e | 8724 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8725 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8726 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8727 | } |
8728 | ||
e7e0cddf SS |
8729 | /* Build a command list for the dprintf corresponding to the current |
8730 | settings of the dprintf style options. */ | |
8731 | ||
8732 | static void | |
8733 | update_dprintf_command_list (struct breakpoint *b) | |
8734 | { | |
8735 | char *dprintf_args = b->extra_string; | |
8736 | char *printf_line = NULL; | |
8737 | ||
8738 | if (!dprintf_args) | |
8739 | return; | |
8740 | ||
8741 | dprintf_args = skip_spaces (dprintf_args); | |
8742 | ||
8743 | /* Allow a comma, as it may have terminated a location, but don't | |
8744 | insist on it. */ | |
8745 | if (*dprintf_args == ',') | |
8746 | ++dprintf_args; | |
8747 | dprintf_args = skip_spaces (dprintf_args); | |
8748 | ||
8749 | if (*dprintf_args != '"') | |
8750 | error (_("Bad format string, missing '\"'.")); | |
8751 | ||
d3ce09f5 | 8752 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8753 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8754 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8755 | { |
8756 | if (!dprintf_function) | |
8757 | error (_("No function supplied for dprintf call")); | |
8758 | ||
8759 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8760 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8761 | dprintf_function, | |
8762 | dprintf_channel, | |
8763 | dprintf_args); | |
8764 | else | |
8765 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8766 | dprintf_function, | |
8767 | dprintf_args); | |
8768 | } | |
d3ce09f5 SS |
8769 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8770 | { | |
8771 | if (target_can_run_breakpoint_commands ()) | |
8772 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8773 | else | |
8774 | { | |
8775 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8776 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8777 | } | |
8778 | } | |
e7e0cddf SS |
8779 | else |
8780 | internal_error (__FILE__, __LINE__, | |
8781 | _("Invalid dprintf style.")); | |
8782 | ||
f28045c2 | 8783 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8784 | /* Manufacture a printf sequence. */ |
f28045c2 | 8785 | { |
8d749320 | 8786 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8787 | |
f28045c2 YQ |
8788 | printf_cmd_line->control_type = simple_control; |
8789 | printf_cmd_line->body_count = 0; | |
8790 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8791 | printf_cmd_line->next = NULL; |
f28045c2 | 8792 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8793 | |
93921405 | 8794 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8795 | } |
e7e0cddf SS |
8796 | } |
8797 | ||
8798 | /* Update all dprintf commands, making their command lists reflect | |
8799 | current style settings. */ | |
8800 | ||
8801 | static void | |
eb4c3f4a | 8802 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8803 | struct cmd_list_element *c) |
8804 | { | |
8805 | struct breakpoint *b; | |
8806 | ||
8807 | ALL_BREAKPOINTS (b) | |
8808 | { | |
8809 | if (b->type == bp_dprintf) | |
8810 | update_dprintf_command_list (b); | |
8811 | } | |
8812 | } | |
c3f6f71d | 8813 | |
f00aae0f KS |
8814 | /* Create a breakpoint with SAL as location. Use LOCATION |
8815 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8816 | as condition expression. If LOCATION is NULL then create an |
8817 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8818 | |
8819 | static void | |
d9b3f62e | 8820 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8821 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8822 | event_location_up &&location, |
e1e01040 PA |
8823 | gdb::unique_xmalloc_ptr<char> filter, |
8824 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8825 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8826 | enum bptype type, enum bpdisp disposition, |
8827 | int thread, int task, int ignore_count, | |
c0a91b2b | 8828 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8829 | int enabled, int internal, unsigned flags, |
8830 | int display_canonical) | |
018d34a4 | 8831 | { |
0d381245 | 8832 | int i; |
018d34a4 VP |
8833 | |
8834 | if (type == bp_hardware_breakpoint) | |
8835 | { | |
fbbd034e AS |
8836 | int target_resources_ok; |
8837 | ||
8838 | i = hw_breakpoint_used_count (); | |
8839 | target_resources_ok = | |
8840 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8841 | i + 1, 0); |
8842 | if (target_resources_ok == 0) | |
8843 | error (_("No hardware breakpoint support in the target.")); | |
8844 | else if (target_resources_ok < 0) | |
8845 | error (_("Hardware breakpoints used exceeds limit.")); | |
8846 | } | |
8847 | ||
6c5b2ebe | 8848 | gdb_assert (!sals.empty ()); |
6c95b8df | 8849 | |
6c5b2ebe | 8850 | for (const auto &sal : sals) |
0d381245 | 8851 | { |
0d381245 VP |
8852 | struct bp_location *loc; |
8853 | ||
8854 | if (from_tty) | |
5af949e3 UW |
8855 | { |
8856 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8857 | if (!loc_gdbarch) | |
8858 | loc_gdbarch = gdbarch; | |
8859 | ||
8860 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8861 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8862 | } |
0d381245 | 8863 | |
6c5b2ebe | 8864 | if (&sal == &sals[0]) |
0d381245 | 8865 | { |
d9b3f62e | 8866 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8867 | b->thread = thread; |
4a306c9a | 8868 | b->task = task; |
855a6e68 | 8869 | |
e1e01040 PA |
8870 | b->cond_string = cond_string.release (); |
8871 | b->extra_string = extra_string.release (); | |
0d381245 | 8872 | b->ignore_count = ignore_count; |
41447f92 | 8873 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8874 | b->disposition = disposition; |
6c95b8df | 8875 | |
44f238bb PA |
8876 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8877 | b->loc->inserted = 1; | |
8878 | ||
0fb4aa4b PA |
8879 | if (type == bp_static_tracepoint) |
8880 | { | |
d9b3f62e | 8881 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8882 | struct static_tracepoint_marker marker; |
8883 | ||
983af33b | 8884 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8885 | { |
8886 | /* We already know the marker exists, otherwise, we | |
8887 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8888 | const char *p |
8889 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8890 | const char *endp; |
0fb4aa4b | 8891 | |
f1735a53 | 8892 | p = skip_spaces (p); |
0fb4aa4b | 8893 | |
f1735a53 | 8894 | endp = skip_to_space (p); |
0fb4aa4b | 8895 | |
5d9310c4 | 8896 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8897 | |
3e43a32a MS |
8898 | printf_filtered (_("Probed static tracepoint " |
8899 | "marker \"%s\"\n"), | |
5d9310c4 | 8900 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8901 | } |
8902 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8903 | { | |
5d9310c4 | 8904 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8905 | |
3e43a32a MS |
8906 | printf_filtered (_("Probed static tracepoint " |
8907 | "marker \"%s\"\n"), | |
5d9310c4 | 8908 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8909 | } |
8910 | else | |
3e43a32a MS |
8911 | warning (_("Couldn't determine the static " |
8912 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8913 | } |
8914 | ||
0d381245 VP |
8915 | loc = b->loc; |
8916 | } | |
8917 | else | |
018d34a4 | 8918 | { |
39d61571 | 8919 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8920 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8921 | loc->inserted = 1; | |
0d381245 VP |
8922 | } |
8923 | ||
8924 | if (b->cond_string) | |
8925 | { | |
bbc13ae3 KS |
8926 | const char *arg = b->cond_string; |
8927 | ||
1bb9788d TT |
8928 | loc->cond = parse_exp_1 (&arg, loc->address, |
8929 | block_for_pc (loc->address), 0); | |
0d381245 | 8930 | if (*arg) |
588ae58c | 8931 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8932 | } |
e7e0cddf SS |
8933 | |
8934 | /* Dynamic printf requires and uses additional arguments on the | |
8935 | command line, otherwise it's an error. */ | |
8936 | if (type == bp_dprintf) | |
8937 | { | |
8938 | if (b->extra_string) | |
8939 | update_dprintf_command_list (b); | |
8940 | else | |
8941 | error (_("Format string required")); | |
8942 | } | |
8943 | else if (b->extra_string) | |
588ae58c | 8944 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8945 | } |
018d34a4 | 8946 | |
56435ebe | 8947 | b->display_canonical = display_canonical; |
f00aae0f | 8948 | if (location != NULL) |
d28cd78a | 8949 | b->location = std::move (location); |
018d34a4 | 8950 | else |
d28cd78a | 8951 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8952 | b->filter = filter.release (); |
d9b3f62e | 8953 | } |
018d34a4 | 8954 | |
d9b3f62e PA |
8955 | static void |
8956 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8957 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8958 | event_location_up &&location, |
e1e01040 PA |
8959 | gdb::unique_xmalloc_ptr<char> filter, |
8960 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8961 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8962 | enum bptype type, enum bpdisp disposition, |
8963 | int thread, int task, int ignore_count, | |
c0a91b2b | 8964 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8965 | int enabled, int internal, unsigned flags, |
8966 | int display_canonical) | |
d9b3f62e | 8967 | { |
a5e364af | 8968 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8969 | |
a5e364af | 8970 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8971 | sals, std::move (location), |
e1e01040 PA |
8972 | std::move (filter), |
8973 | std::move (cond_string), | |
8974 | std::move (extra_string), | |
d9b3f62e PA |
8975 | type, disposition, |
8976 | thread, task, ignore_count, | |
8977 | ops, from_tty, | |
44f238bb PA |
8978 | enabled, internal, flags, |
8979 | display_canonical); | |
d9b3f62e | 8980 | |
b270e6f9 | 8981 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8982 | } |
8983 | ||
8984 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8985 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8986 | value. COND_STRING, if not NULL, specified the condition to be | |
8987 | used for all breakpoints. Essentially the only case where | |
8988 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8989 | function. In that case, it's still not possible to specify | |
8990 | separate conditions for different overloaded functions, so | |
8991 | we take just a single condition string. | |
8992 | ||
c3f6f71d | 8993 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8994 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8995 | array contents). If the function fails (error() is called), the |
8996 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8997 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8998 | |
8999 | static void | |
8cdf0e15 | 9000 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9001 | struct linespec_result *canonical, |
e1e01040 PA |
9002 | gdb::unique_xmalloc_ptr<char> cond_string, |
9003 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9004 | enum bptype type, enum bpdisp disposition, |
9005 | int thread, int task, int ignore_count, | |
c0a91b2b | 9006 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9007 | int enabled, int internal, unsigned flags) |
c906108c | 9008 | { |
f8eba3c6 | 9009 | if (canonical->pre_expanded) |
6c5b2ebe | 9010 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9011 | |
6c5b2ebe | 9012 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9013 | { |
f00aae0f | 9014 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9015 | 'break', without arguments. */ |
ffc2605c | 9016 | event_location_up location |
f00aae0f | 9017 | = (canonical->location != NULL |
8e9e35b1 | 9018 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9019 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9020 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9021 | |
6c5b2ebe | 9022 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9023 | std::move (location), |
e1e01040 PA |
9024 | std::move (filter_string), |
9025 | std::move (cond_string), | |
9026 | std::move (extra_string), | |
e7e0cddf | 9027 | type, disposition, |
84f4c1fe | 9028 | thread, task, ignore_count, ops, |
44f238bb | 9029 | from_tty, enabled, internal, flags, |
56435ebe | 9030 | canonical->special_display); |
c3f6f71d | 9031 | } |
c3f6f71d | 9032 | } |
c906108c | 9033 | |
f00aae0f | 9034 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9035 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9036 | addresses found. LOCATION points to the end of the SAL (for |
9037 | linespec locations). | |
9998af43 TJB |
9038 | |
9039 | The array and the line spec strings are allocated on the heap, it is | |
9040 | the caller's responsibility to free them. */ | |
c906108c | 9041 | |
b9362cc7 | 9042 | static void |
f00aae0f | 9043 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9044 | struct linespec_result *canonical) |
c3f6f71d | 9045 | { |
f00aae0f KS |
9046 | struct symtab_and_line cursal; |
9047 | ||
9048 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9049 | { | |
a20714ff | 9050 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9051 | |
a20714ff | 9052 | if (spec == NULL) |
f00aae0f KS |
9053 | { |
9054 | /* The last displayed codepoint, if it's valid, is our default | |
9055 | breakpoint address. */ | |
9056 | if (last_displayed_sal_is_valid ()) | |
9057 | { | |
f00aae0f KS |
9058 | /* Set sal's pspace, pc, symtab, and line to the values |
9059 | corresponding to the last call to print_frame_info. | |
9060 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9061 | as the breakpoint line number is inappropriate otherwise. | |
9062 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9063 | symtab_and_line sal = get_last_displayed_sal (); |
9064 | CORE_ADDR pc = sal.pc; | |
9065 | ||
f00aae0f KS |
9066 | sal = find_pc_line (pc, 0); |
9067 | ||
9068 | /* "break" without arguments is equivalent to "break *PC" | |
9069 | where PC is the last displayed codepoint's address. So | |
9070 | make sure to set sal.explicit_pc to prevent GDB from | |
9071 | trying to expand the list of sals to include all other | |
9072 | instances with the same symtab and line. */ | |
9073 | sal.pc = pc; | |
9074 | sal.explicit_pc = 1; | |
9075 | ||
6c5b2ebe PA |
9076 | struct linespec_sals lsal; |
9077 | lsal.sals = {sal}; | |
f00aae0f KS |
9078 | lsal.canonical = NULL; |
9079 | ||
6c5b2ebe | 9080 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9081 | return; |
9082 | } | |
9083 | else | |
9084 | error (_("No default breakpoint address now.")); | |
c906108c | 9085 | } |
c906108c | 9086 | } |
f00aae0f KS |
9087 | |
9088 | /* Force almost all breakpoints to be in terms of the | |
9089 | current_source_symtab (which is decode_line_1's default). | |
9090 | This should produce the results we want almost all of the | |
9091 | time while leaving default_breakpoint_* alone. | |
9092 | ||
9093 | ObjC: However, don't match an Objective-C method name which | |
9094 | may have a '+' or '-' succeeded by a '['. */ | |
9095 | cursal = get_current_source_symtab_and_line (); | |
9096 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9097 | { |
a20714ff | 9098 | const char *spec = NULL; |
cc80f267 | 9099 | |
f00aae0f | 9100 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9101 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9102 | |
f00aae0f | 9103 | if (!cursal.symtab |
a20714ff PA |
9104 | || (spec != NULL |
9105 | && strchr ("+-", spec[0]) != NULL | |
9106 | && spec[1] != '[')) | |
f00aae0f | 9107 | { |
c2f4122d | 9108 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9109 | get_last_displayed_symtab (), |
9110 | get_last_displayed_line (), | |
9111 | canonical, NULL, NULL); | |
9112 | return; | |
9113 | } | |
c906108c | 9114 | } |
f00aae0f | 9115 | |
c2f4122d | 9116 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9117 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9118 | } |
c906108c | 9119 | |
c906108c | 9120 | |
c3f6f71d | 9121 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9122 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9123 | |
b9362cc7 | 9124 | static void |
6c5b2ebe | 9125 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9126 | { |
6c5b2ebe PA |
9127 | for (auto &sal : sals) |
9128 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9129 | } |
9130 | ||
7a697b8d SS |
9131 | /* Fast tracepoints may have restrictions on valid locations. For |
9132 | instance, a fast tracepoint using a jump instead of a trap will | |
9133 | likely have to overwrite more bytes than a trap would, and so can | |
9134 | only be placed where the instruction is longer than the jump, or a | |
9135 | multi-instruction sequence does not have a jump into the middle of | |
9136 | it, etc. */ | |
9137 | ||
9138 | static void | |
9139 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9140 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9141 | { |
6c5b2ebe | 9142 | for (const auto &sal : sals) |
7a697b8d | 9143 | { |
f8eba3c6 TT |
9144 | struct gdbarch *sarch; |
9145 | ||
6c5b2ebe | 9146 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9147 | /* We fall back to GDBARCH if there is no architecture |
9148 | associated with SAL. */ | |
9149 | if (sarch == NULL) | |
9150 | sarch = gdbarch; | |
281d762b TT |
9151 | std::string msg; |
9152 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9153 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9154 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9155 | } |
9156 | } | |
9157 | ||
018d34a4 VP |
9158 | /* Given TOK, a string specification of condition and thread, as |
9159 | accepted by the 'break' command, extract the condition | |
9160 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9161 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9162 | If no condition is found, *COND_STRING is set to NULL. |
9163 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9164 | |
9165 | static void | |
bbc13ae3 | 9166 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9167 | char **cond_string, int *thread, int *task, |
9168 | char **rest) | |
018d34a4 VP |
9169 | { |
9170 | *cond_string = NULL; | |
9171 | *thread = -1; | |
ed1d1739 KS |
9172 | *task = 0; |
9173 | *rest = NULL; | |
9174 | ||
018d34a4 VP |
9175 | while (tok && *tok) |
9176 | { | |
bbc13ae3 | 9177 | const char *end_tok; |
018d34a4 | 9178 | int toklen; |
bbc13ae3 KS |
9179 | const char *cond_start = NULL; |
9180 | const char *cond_end = NULL; | |
cc59ec59 | 9181 | |
f1735a53 | 9182 | tok = skip_spaces (tok); |
e7e0cddf SS |
9183 | |
9184 | if ((*tok == '"' || *tok == ',') && rest) | |
9185 | { | |
9186 | *rest = savestring (tok, strlen (tok)); | |
9187 | return; | |
9188 | } | |
9189 | ||
f1735a53 | 9190 | end_tok = skip_to_space (tok); |
d634f2de | 9191 | |
018d34a4 | 9192 | toklen = end_tok - tok; |
d634f2de | 9193 | |
018d34a4 VP |
9194 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9195 | { | |
9196 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9197 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9198 | cond_end = tok; |
d634f2de | 9199 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9200 | } |
9201 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9202 | { | |
5d5658a1 PA |
9203 | const char *tmptok; |
9204 | struct thread_info *thr; | |
d634f2de | 9205 | |
018d34a4 | 9206 | tok = end_tok + 1; |
5d5658a1 | 9207 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9208 | if (tok == tmptok) |
9209 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9210 | *thread = thr->global_num; |
bbc13ae3 | 9211 | tok = tmptok; |
018d34a4 | 9212 | } |
4a306c9a JB |
9213 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9214 | { | |
9215 | char *tmptok; | |
9216 | ||
9217 | tok = end_tok + 1; | |
bbc13ae3 | 9218 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9219 | if (tok == tmptok) |
9220 | error (_("Junk after task keyword.")); | |
9221 | if (!valid_task_id (*task)) | |
b6199126 | 9222 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9223 | tok = tmptok; |
4a306c9a | 9224 | } |
e7e0cddf SS |
9225 | else if (rest) |
9226 | { | |
9227 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9228 | return; |
e7e0cddf | 9229 | } |
018d34a4 VP |
9230 | else |
9231 | error (_("Junk at end of arguments.")); | |
9232 | } | |
9233 | } | |
9234 | ||
0fb4aa4b PA |
9235 | /* Decode a static tracepoint marker spec. */ |
9236 | ||
6c5b2ebe | 9237 | static std::vector<symtab_and_line> |
f00aae0f | 9238 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9239 | { |
f00aae0f KS |
9240 | const char *p = &(*arg_p)[3]; |
9241 | const char *endp; | |
0fb4aa4b | 9242 | |
f1735a53 | 9243 | p = skip_spaces (p); |
0fb4aa4b | 9244 | |
f1735a53 | 9245 | endp = skip_to_space (p); |
0fb4aa4b | 9246 | |
81b1e71c | 9247 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9248 | |
5d9310c4 SM |
9249 | std::vector<static_tracepoint_marker> markers |
9250 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9251 | if (markers.empty ()) | |
81b1e71c TT |
9252 | error (_("No known static tracepoint marker named %s"), |
9253 | marker_str.c_str ()); | |
0fb4aa4b | 9254 | |
6c5b2ebe | 9255 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9256 | sals.reserve (markers.size ()); |
0fb4aa4b | 9257 | |
5d9310c4 | 9258 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9259 | { |
5d9310c4 SM |
9260 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9261 | sal.pc = marker.address; | |
6c5b2ebe | 9262 | sals.push_back (sal); |
5d9310c4 | 9263 | } |
0fb4aa4b | 9264 | |
0fb4aa4b PA |
9265 | *arg_p = endp; |
9266 | return sals; | |
9267 | } | |
9268 | ||
f00aae0f | 9269 | /* See breakpoint.h. */ |
0101ce28 | 9270 | |
8cdf0e15 VP |
9271 | int |
9272 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9273 | const struct event_location *location, |
9274 | const char *cond_string, | |
9275 | int thread, const char *extra_string, | |
f00aae0f | 9276 | int parse_extra, |
0fb4aa4b | 9277 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9278 | int ignore_count, |
9279 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9280 | const struct breakpoint_ops *ops, |
44f238bb PA |
9281 | int from_tty, int enabled, int internal, |
9282 | unsigned flags) | |
c3f6f71d | 9283 | { |
7efd8fc2 | 9284 | struct linespec_result canonical; |
80c99de1 | 9285 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9286 | int pending = 0; |
4a306c9a | 9287 | int task = 0; |
86b17b60 | 9288 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9289 | |
348d480f PA |
9290 | gdb_assert (ops != NULL); |
9291 | ||
f00aae0f KS |
9292 | /* If extra_string isn't useful, set it to NULL. */ |
9293 | if (extra_string != NULL && *extra_string == '\0') | |
9294 | extra_string = NULL; | |
9295 | ||
492d29ea | 9296 | TRY |
b78a6381 | 9297 | { |
f00aae0f | 9298 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9299 | } |
492d29ea | 9300 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9301 | { |
492d29ea PA |
9302 | /* If caller is interested in rc value from parse, set |
9303 | value. */ | |
9304 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9305 | { |
05ff989b AC |
9306 | /* If pending breakpoint support is turned off, throw |
9307 | error. */ | |
fa8d40ab JJ |
9308 | |
9309 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9310 | throw_exception (e); |
9311 | ||
9312 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9313 | |
05ff989b AC |
9314 | /* If pending breakpoint support is auto query and the user |
9315 | selects no, then simply return the error code. */ | |
059fb39f | 9316 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9317 | && !nquery (_("Make %s pending on future shared library load? "), |
9318 | bptype_string (type_wanted))) | |
fd9b8c24 | 9319 | return 0; |
fa8d40ab | 9320 | |
05ff989b AC |
9321 | /* At this point, either the user was queried about setting |
9322 | a pending breakpoint and selected yes, or pending | |
9323 | breakpoint behavior is on and thus a pending breakpoint | |
9324 | is defaulted on behalf of the user. */ | |
f00aae0f | 9325 | pending = 1; |
0101ce28 | 9326 | } |
492d29ea PA |
9327 | else |
9328 | throw_exception (e); | |
0101ce28 | 9329 | } |
492d29ea PA |
9330 | END_CATCH |
9331 | ||
6c5b2ebe | 9332 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9333 | return 0; |
c3f6f71d | 9334 | |
c3f6f71d JM |
9335 | /* ----------------------------- SNIP ----------------------------- |
9336 | Anything added to the cleanup chain beyond this point is assumed | |
9337 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9338 | then the memory is not reclaimed. */ |
9339 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9340 | |
c3f6f71d JM |
9341 | /* Resolve all line numbers to PC's and verify that the addresses |
9342 | are ok for the target. */ | |
0101ce28 | 9343 | if (!pending) |
f8eba3c6 | 9344 | { |
6c5b2ebe PA |
9345 | for (auto &lsal : canonical.lsals) |
9346 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9347 | } |
c3f6f71d | 9348 | |
7a697b8d | 9349 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9350 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9351 | { |
6c5b2ebe PA |
9352 | for (const auto &lsal : canonical.lsals) |
9353 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9354 | } |
7a697b8d | 9355 | |
c3f6f71d JM |
9356 | /* Verify that condition can be parsed, before setting any |
9357 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9358 | breakpoint. */ |
0101ce28 | 9359 | if (!pending) |
c3f6f71d | 9360 | { |
e1e01040 PA |
9361 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9362 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9363 | ||
f00aae0f | 9364 | if (parse_extra) |
72b2ff0e | 9365 | { |
0878d0fa | 9366 | char *rest; |
e1e01040 | 9367 | char *cond; |
52d361e1 | 9368 | |
6c5b2ebe | 9369 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9370 | |
0878d0fa YQ |
9371 | /* Here we only parse 'arg' to separate condition |
9372 | from thread number, so parsing in context of first | |
9373 | sal is OK. When setting the breakpoint we'll | |
9374 | re-parse it in context of each sal. */ | |
9375 | ||
6c5b2ebe | 9376 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9377 | &cond, &thread, &task, &rest); |
9378 | cond_string_copy.reset (cond); | |
9379 | extra_string_copy.reset (rest); | |
72b2ff0e | 9380 | } |
2f069f6f | 9381 | else |
72b2ff0e | 9382 | { |
f00aae0f KS |
9383 | if (type_wanted != bp_dprintf |
9384 | && extra_string != NULL && *extra_string != '\0') | |
9385 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9386 | |
9387 | /* Create a private copy of condition string. */ | |
9388 | if (cond_string) | |
e1e01040 | 9389 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9390 | /* Create a private copy of any extra string. */ |
9391 | if (extra_string) | |
e1e01040 | 9392 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9393 | } |
0fb4aa4b | 9394 | |
52d361e1 | 9395 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9396 | std::move (cond_string_copy), |
9397 | std::move (extra_string_copy), | |
9398 | type_wanted, | |
d9b3f62e PA |
9399 | tempflag ? disp_del : disp_donttouch, |
9400 | thread, task, ignore_count, ops, | |
44f238bb | 9401 | from_tty, enabled, internal, flags); |
c906108c | 9402 | } |
0101ce28 JJ |
9403 | else |
9404 | { | |
a5e364af | 9405 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9406 | |
a5e364af | 9407 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9408 | b->location = copy_event_location (location); |
bfccc43c | 9409 | |
f00aae0f KS |
9410 | if (parse_extra) |
9411 | b->cond_string = NULL; | |
e12c7713 MK |
9412 | else |
9413 | { | |
9414 | /* Create a private copy of condition string. */ | |
e1e01040 | 9415 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9416 | b->thread = thread; |
e12c7713 | 9417 | } |
f00aae0f KS |
9418 | |
9419 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9420 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9421 | b->ignore_count = ignore_count; |
0101ce28 | 9422 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9423 | b->condition_not_parsed = 1; |
41447f92 | 9424 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9425 | if ((type_wanted != bp_breakpoint |
9426 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9427 | b->pspace = current_program_space; |
8bea4e01 | 9428 | |
b270e6f9 | 9429 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9430 | } |
9431 | ||
6c5b2ebe | 9432 | if (canonical.lsals.size () > 1) |
95a42b64 | 9433 | { |
3e43a32a MS |
9434 | warning (_("Multiple breakpoints were set.\nUse the " |
9435 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9436 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9437 | } |
9438 | ||
80c99de1 PA |
9439 | /* That's it. Discard the cleanups for data inserted into the |
9440 | breakpoint. */ | |
9441 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9442 | |
80c99de1 | 9443 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9444 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9445 | |
9446 | return 1; | |
c3f6f71d | 9447 | } |
c906108c | 9448 | |
348d480f | 9449 | /* Set a breakpoint. |
72b2ff0e VP |
9450 | ARG is a string describing breakpoint address, |
9451 | condition, and thread. | |
9452 | FLAG specifies if a breakpoint is hardware on, | |
9453 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9454 | and BP_TEMPFLAG. */ | |
348d480f | 9455 | |
98deb0da | 9456 | static void |
f2fc3015 | 9457 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9458 | { |
72b2ff0e | 9459 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9460 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9461 | ? bp_hardware_breakpoint | |
9462 | : bp_breakpoint); | |
55aa24fb | 9463 | struct breakpoint_ops *ops; |
f00aae0f | 9464 | |
ffc2605c | 9465 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9466 | |
9467 | /* Matching breakpoints on probes. */ | |
5b56227b | 9468 | if (location != NULL |
ffc2605c | 9469 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9470 | ops = &bkpt_probe_breakpoint_ops; |
9471 | else | |
9472 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9473 | |
8cdf0e15 | 9474 | create_breakpoint (get_current_arch (), |
ffc2605c | 9475 | location.get (), |
f00aae0f | 9476 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9477 | tempflag, type_wanted, |
8cdf0e15 VP |
9478 | 0 /* Ignore count */, |
9479 | pending_break_support, | |
55aa24fb | 9480 | ops, |
8cdf0e15 | 9481 | from_tty, |
84f4c1fe | 9482 | 1 /* enabled */, |
44f238bb PA |
9483 | 0 /* internal */, |
9484 | 0); | |
c906108c SS |
9485 | } |
9486 | ||
c906108c SS |
9487 | /* Helper function for break_command_1 and disassemble_command. */ |
9488 | ||
9489 | void | |
fba45db2 | 9490 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9491 | { |
9492 | CORE_ADDR pc; | |
9493 | ||
9494 | if (sal->pc == 0 && sal->symtab != NULL) | |
9495 | { | |
9496 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9497 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9498 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9499 | sal->pc = pc; |
6a048695 | 9500 | |
4a64f543 MS |
9501 | /* If this SAL corresponds to a breakpoint inserted using a line |
9502 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9503 | if (sal->explicit_line) |
059acae7 | 9504 | skip_prologue_sal (sal); |
c906108c SS |
9505 | } |
9506 | ||
9507 | if (sal->section == 0 && sal->symtab != NULL) | |
9508 | { | |
346d1dfe | 9509 | const struct blockvector *bv; |
3977b71f | 9510 | const struct block *b; |
c5aa993b | 9511 | struct symbol *sym; |
c906108c | 9512 | |
43f3e411 DE |
9513 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9514 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9515 | if (bv != NULL) |
9516 | { | |
7f0df278 | 9517 | sym = block_linkage_function (b); |
c906108c SS |
9518 | if (sym != NULL) |
9519 | { | |
eb822aa6 DE |
9520 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9521 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9522 | sym); | |
c906108c SS |
9523 | } |
9524 | else | |
9525 | { | |
4a64f543 MS |
9526 | /* It really is worthwhile to have the section, so we'll |
9527 | just have to look harder. This case can be executed | |
9528 | if we have line numbers but no functions (as can | |
9529 | happen in assembly source). */ | |
c906108c | 9530 | |
5ed8105e | 9531 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9532 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9533 | |
5ed8105e | 9534 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9535 | if (msym.minsym) |
efd66ac6 | 9536 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9537 | } |
9538 | } | |
9539 | } | |
9540 | } | |
9541 | ||
9542 | void | |
0b39b52e | 9543 | break_command (const char *arg, int from_tty) |
c906108c | 9544 | { |
db107f19 | 9545 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9546 | } |
9547 | ||
c906108c | 9548 | void |
0b39b52e | 9549 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9550 | { |
db107f19 | 9551 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9552 | } |
9553 | ||
c906108c | 9554 | static void |
0b39b52e | 9555 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9556 | { |
db107f19 | 9557 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9558 | } |
9559 | ||
9560 | static void | |
0b39b52e | 9561 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9562 | { |
db107f19 | 9563 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9564 | } |
9565 | ||
9566 | static void | |
ee7ddd71 | 9567 | stop_command (const char *arg, int from_tty) |
c906108c | 9568 | { |
a3f17187 | 9569 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9570 | Usage: stop in <function | address>\n\ |
a3f17187 | 9571 | stop at <line>\n")); |
c906108c SS |
9572 | } |
9573 | ||
9574 | static void | |
4495129a | 9575 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9576 | { |
9577 | int badInput = 0; | |
9578 | ||
c5aa993b | 9579 | if (arg == (char *) NULL) |
c906108c SS |
9580 | badInput = 1; |
9581 | else if (*arg != '*') | |
9582 | { | |
4495129a | 9583 | const char *argptr = arg; |
c906108c SS |
9584 | int hasColon = 0; |
9585 | ||
4a64f543 | 9586 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9587 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9588 | function/method name. */ |
c906108c | 9589 | while (*argptr && !hasColon) |
c5aa993b JM |
9590 | { |
9591 | hasColon = (*argptr == ':'); | |
9592 | argptr++; | |
9593 | } | |
c906108c SS |
9594 | |
9595 | if (hasColon) | |
c5aa993b | 9596 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9597 | else |
c5aa993b | 9598 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9599 | } |
9600 | ||
9601 | if (badInput) | |
a3f17187 | 9602 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9603 | else |
db107f19 | 9604 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9605 | } |
9606 | ||
9607 | static void | |
4495129a | 9608 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9609 | { |
9610 | int badInput = 0; | |
9611 | ||
c5aa993b | 9612 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9613 | badInput = 1; |
9614 | else | |
9615 | { | |
4495129a | 9616 | const char *argptr = arg; |
c906108c SS |
9617 | int hasColon = 0; |
9618 | ||
4a64f543 MS |
9619 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9620 | it is probably a line number. */ | |
c906108c | 9621 | while (*argptr && !hasColon) |
c5aa993b JM |
9622 | { |
9623 | hasColon = (*argptr == ':'); | |
9624 | argptr++; | |
9625 | } | |
c906108c SS |
9626 | |
9627 | if (hasColon) | |
c5aa993b | 9628 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9629 | else |
c5aa993b | 9630 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9631 | } |
9632 | ||
9633 | if (badInput) | |
a3f17187 | 9634 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9635 | else |
db107f19 | 9636 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9637 | } |
9638 | ||
e7e0cddf SS |
9639 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9640 | with a prewired command list consisting of a single output command, | |
9641 | built from extra arguments supplied on the dprintf command | |
9642 | line. */ | |
9643 | ||
da821c7b | 9644 | static void |
0b39b52e | 9645 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9646 | { |
ffc2605c | 9647 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9648 | |
9649 | /* If non-NULL, ARG should have been advanced past the location; | |
9650 | the next character must be ','. */ | |
9651 | if (arg != NULL) | |
9652 | { | |
9653 | if (arg[0] != ',' || arg[1] == '\0') | |
9654 | error (_("Format string required")); | |
9655 | else | |
9656 | { | |
9657 | /* Skip the comma. */ | |
9658 | ++arg; | |
9659 | } | |
9660 | } | |
9661 | ||
e7e0cddf | 9662 | create_breakpoint (get_current_arch (), |
ffc2605c | 9663 | location.get (), |
f00aae0f | 9664 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9665 | 0, bp_dprintf, |
9666 | 0 /* Ignore count */, | |
9667 | pending_break_support, | |
9668 | &dprintf_breakpoint_ops, | |
9669 | from_tty, | |
9670 | 1 /* enabled */, | |
9671 | 0 /* internal */, | |
9672 | 0); | |
9673 | } | |
9674 | ||
d3ce09f5 | 9675 | static void |
0b39b52e | 9676 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9677 | { |
9678 | error (_("May only run agent-printf on the target")); | |
9679 | } | |
9680 | ||
f1310107 TJB |
9681 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9682 | ranged breakpoints. */ | |
9683 | ||
9684 | static int | |
9685 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9686 | const address_space *aspace, |
09ac7c10 TT |
9687 | CORE_ADDR bp_addr, |
9688 | const struct target_waitstatus *ws) | |
f1310107 | 9689 | { |
09ac7c10 | 9690 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9691 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9692 | return 0; |
9693 | ||
f1310107 TJB |
9694 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9695 | bl->length, aspace, bp_addr); | |
9696 | } | |
9697 | ||
9698 | /* Implement the "resources_needed" breakpoint_ops method for | |
9699 | ranged breakpoints. */ | |
9700 | ||
9701 | static int | |
9702 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9703 | { | |
9704 | return target_ranged_break_num_registers (); | |
9705 | } | |
9706 | ||
9707 | /* Implement the "print_it" breakpoint_ops method for | |
9708 | ranged breakpoints. */ | |
9709 | ||
9710 | static enum print_stop_action | |
348d480f | 9711 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9712 | { |
348d480f | 9713 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9714 | struct bp_location *bl = b->loc; |
79a45e25 | 9715 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9716 | |
9717 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9718 | ||
9719 | /* Ranged breakpoints have only one location. */ | |
9720 | gdb_assert (bl && bl->next == NULL); | |
9721 | ||
9722 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9723 | |
9724 | maybe_print_thread_hit_breakpoint (uiout); | |
9725 | ||
f1310107 | 9726 | if (b->disposition == disp_del) |
112e8700 | 9727 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9728 | else |
112e8700 SM |
9729 | uiout->text ("Ranged breakpoint "); |
9730 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9731 | { |
112e8700 | 9732 | uiout->field_string ("reason", |
f1310107 | 9733 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9734 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9735 | } |
112e8700 SM |
9736 | uiout->field_int ("bkptno", b->number); |
9737 | uiout->text (", "); | |
f1310107 TJB |
9738 | |
9739 | return PRINT_SRC_AND_LOC; | |
9740 | } | |
9741 | ||
9742 | /* Implement the "print_one" breakpoint_ops method for | |
9743 | ranged breakpoints. */ | |
9744 | ||
9745 | static void | |
9746 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9747 | struct bp_location **last_loc) | |
9748 | { | |
9749 | struct bp_location *bl = b->loc; | |
9750 | struct value_print_options opts; | |
79a45e25 | 9751 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9752 | |
9753 | /* Ranged breakpoints have only one location. */ | |
9754 | gdb_assert (bl && bl->next == NULL); | |
9755 | ||
9756 | get_user_print_options (&opts); | |
9757 | ||
9758 | if (opts.addressprint) | |
9759 | /* We don't print the address range here, it will be printed later | |
9760 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9761 | uiout->field_skip ("addr"); |
f1310107 TJB |
9762 | annotate_field (5); |
9763 | print_breakpoint_location (b, bl); | |
9764 | *last_loc = bl; | |
9765 | } | |
9766 | ||
9767 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9768 | ranged breakpoints. */ | |
9769 | ||
9770 | static void | |
9771 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9772 | struct ui_out *uiout) | |
9773 | { | |
9774 | CORE_ADDR address_start, address_end; | |
9775 | struct bp_location *bl = b->loc; | |
d7e74731 | 9776 | string_file stb; |
f1310107 TJB |
9777 | |
9778 | gdb_assert (bl); | |
9779 | ||
9780 | address_start = bl->address; | |
9781 | address_end = address_start + bl->length - 1; | |
9782 | ||
112e8700 | 9783 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9784 | stb.printf ("[%s, %s]", |
9785 | print_core_address (bl->gdbarch, address_start), | |
9786 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9787 | uiout->field_stream ("addr", stb); |
9788 | uiout->text ("\n"); | |
f1310107 TJB |
9789 | } |
9790 | ||
9791 | /* Implement the "print_mention" breakpoint_ops method for | |
9792 | ranged breakpoints. */ | |
9793 | ||
9794 | static void | |
9795 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9796 | { | |
9797 | struct bp_location *bl = b->loc; | |
79a45e25 | 9798 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9799 | |
9800 | gdb_assert (bl); | |
9801 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9802 | ||
112e8700 | 9803 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9804 | return; |
9805 | ||
9806 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9807 | b->number, paddress (bl->gdbarch, bl->address), | |
9808 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9809 | } | |
9810 | ||
9811 | /* Implement the "print_recreate" breakpoint_ops method for | |
9812 | ranged breakpoints. */ | |
9813 | ||
9814 | static void | |
9815 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9816 | { | |
f00aae0f | 9817 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9818 | event_location_to_string (b->location.get ()), |
9819 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9820 | print_recreate_thread (b, fp); |
f1310107 TJB |
9821 | } |
9822 | ||
9823 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9824 | ||
2060206e | 9825 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9826 | |
9827 | /* Find the address where the end of the breakpoint range should be | |
9828 | placed, given the SAL of the end of the range. This is so that if | |
9829 | the user provides a line number, the end of the range is set to the | |
9830 | last instruction of the given line. */ | |
9831 | ||
9832 | static CORE_ADDR | |
9833 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9834 | { | |
9835 | CORE_ADDR end; | |
9836 | ||
9837 | /* If the user provided a PC value, use it. Otherwise, | |
9838 | find the address of the end of the given location. */ | |
9839 | if (sal.explicit_pc) | |
9840 | end = sal.pc; | |
9841 | else | |
9842 | { | |
9843 | int ret; | |
9844 | CORE_ADDR start; | |
9845 | ||
9846 | ret = find_line_pc_range (sal, &start, &end); | |
9847 | if (!ret) | |
9848 | error (_("Could not find location of the end of the range.")); | |
9849 | ||
9850 | /* find_line_pc_range returns the start of the next line. */ | |
9851 | end--; | |
9852 | } | |
9853 | ||
9854 | return end; | |
9855 | } | |
9856 | ||
9857 | /* Implement the "break-range" CLI command. */ | |
9858 | ||
9859 | static void | |
0b39b52e | 9860 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9861 | { |
f2fc3015 | 9862 | const char *arg_start; |
f1310107 TJB |
9863 | struct linespec_result canonical_start, canonical_end; |
9864 | int bp_count, can_use_bp, length; | |
9865 | CORE_ADDR end; | |
9866 | struct breakpoint *b; | |
f1310107 TJB |
9867 | |
9868 | /* We don't support software ranged breakpoints. */ | |
9869 | if (target_ranged_break_num_registers () < 0) | |
9870 | error (_("This target does not support hardware ranged breakpoints.")); | |
9871 | ||
9872 | bp_count = hw_breakpoint_used_count (); | |
9873 | bp_count += target_ranged_break_num_registers (); | |
9874 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9875 | bp_count, 0); | |
9876 | if (can_use_bp < 0) | |
9877 | error (_("Hardware breakpoints used exceeds limit.")); | |
9878 | ||
f8eba3c6 | 9879 | arg = skip_spaces (arg); |
f1310107 TJB |
9880 | if (arg == NULL || arg[0] == '\0') |
9881 | error(_("No address range specified.")); | |
9882 | ||
f8eba3c6 | 9883 | arg_start = arg; |
ffc2605c TT |
9884 | event_location_up start_location = string_to_event_location (&arg, |
9885 | current_language); | |
9886 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9887 | |
9888 | if (arg[0] != ',') | |
9889 | error (_("Too few arguments.")); | |
6c5b2ebe | 9890 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9891 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9892 | |
6c5b2ebe | 9893 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9894 | |
6c5b2ebe PA |
9895 | if (canonical_start.lsals.size () > 1 |
9896 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9897 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9898 | ||
6c5b2ebe | 9899 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9900 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9901 | |
9902 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9903 | arg = skip_spaces (arg); |
f1310107 TJB |
9904 | |
9905 | /* Parse the end location. */ | |
9906 | ||
f1310107 TJB |
9907 | arg_start = arg; |
9908 | ||
f8eba3c6 | 9909 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9910 | parse_breakpoint_sals because we need to specify the start location's |
9911 | symtab and line as the default symtab and line for the end of the | |
9912 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9913 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9914 | event_location_up end_location = string_to_event_location (&arg, |
9915 | current_language); | |
9916 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9917 | sal_start.symtab, sal_start.line, |
9918 | &canonical_end, NULL, NULL); | |
9919 | ||
6c5b2ebe | 9920 | if (canonical_end.lsals.empty ()) |
f1310107 | 9921 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9922 | |
6c5b2ebe PA |
9923 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9924 | if (canonical_end.lsals.size () > 1 | |
9925 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9926 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9927 | ||
6c5b2ebe | 9928 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9929 | |
9930 | end = find_breakpoint_range_end (sal_end); | |
9931 | if (sal_start.pc > end) | |
177b42fe | 9932 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9933 | |
9934 | length = end - sal_start.pc + 1; | |
9935 | if (length < 0) | |
9936 | /* Length overflowed. */ | |
9937 | error (_("Address range too large.")); | |
9938 | else if (length == 1) | |
9939 | { | |
9940 | /* This range is simple enough to be handled by | |
9941 | the `hbreak' command. */ | |
81b1e71c | 9942 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9943 | |
9944 | return; | |
9945 | } | |
9946 | ||
9947 | /* Now set up the breakpoint. */ | |
9948 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9949 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9950 | set_breakpoint_count (breakpoint_count + 1); |
9951 | b->number = breakpoint_count; | |
9952 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9953 | b->location = std::move (start_location); |
9954 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9955 | b->loc->length = length; |
9956 | ||
f1310107 | 9957 | mention (b); |
76727919 | 9958 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9959 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9960 | } |
9961 | ||
4a64f543 MS |
9962 | /* Return non-zero if EXP is verified as constant. Returned zero |
9963 | means EXP is variable. Also the constant detection may fail for | |
9964 | some constant expressions and in such case still falsely return | |
9965 | zero. */ | |
2e6e3d9c | 9966 | |
65d79d4b SDJ |
9967 | static int |
9968 | watchpoint_exp_is_const (const struct expression *exp) | |
9969 | { | |
9970 | int i = exp->nelts; | |
9971 | ||
9972 | while (i > 0) | |
9973 | { | |
9974 | int oplenp, argsp; | |
9975 | ||
9976 | /* We are only interested in the descriptor of each element. */ | |
9977 | operator_length (exp, i, &oplenp, &argsp); | |
9978 | i -= oplenp; | |
9979 | ||
9980 | switch (exp->elts[i].opcode) | |
9981 | { | |
9982 | case BINOP_ADD: | |
9983 | case BINOP_SUB: | |
9984 | case BINOP_MUL: | |
9985 | case BINOP_DIV: | |
9986 | case BINOP_REM: | |
9987 | case BINOP_MOD: | |
9988 | case BINOP_LSH: | |
9989 | case BINOP_RSH: | |
9990 | case BINOP_LOGICAL_AND: | |
9991 | case BINOP_LOGICAL_OR: | |
9992 | case BINOP_BITWISE_AND: | |
9993 | case BINOP_BITWISE_IOR: | |
9994 | case BINOP_BITWISE_XOR: | |
9995 | case BINOP_EQUAL: | |
9996 | case BINOP_NOTEQUAL: | |
9997 | case BINOP_LESS: | |
9998 | case BINOP_GTR: | |
9999 | case BINOP_LEQ: | |
10000 | case BINOP_GEQ: | |
10001 | case BINOP_REPEAT: | |
10002 | case BINOP_COMMA: | |
10003 | case BINOP_EXP: | |
10004 | case BINOP_MIN: | |
10005 | case BINOP_MAX: | |
10006 | case BINOP_INTDIV: | |
10007 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10008 | case TERNOP_COND: |
10009 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10010 | |
10011 | case OP_LONG: | |
edd079d9 | 10012 | case OP_FLOAT: |
65d79d4b SDJ |
10013 | case OP_LAST: |
10014 | case OP_COMPLEX: | |
10015 | case OP_STRING: | |
65d79d4b SDJ |
10016 | case OP_ARRAY: |
10017 | case OP_TYPE: | |
608b4967 TT |
10018 | case OP_TYPEOF: |
10019 | case OP_DECLTYPE: | |
6e72ca20 | 10020 | case OP_TYPEID: |
65d79d4b SDJ |
10021 | case OP_NAME: |
10022 | case OP_OBJC_NSSTRING: | |
10023 | ||
10024 | case UNOP_NEG: | |
10025 | case UNOP_LOGICAL_NOT: | |
10026 | case UNOP_COMPLEMENT: | |
10027 | case UNOP_ADDR: | |
10028 | case UNOP_HIGH: | |
aeaa2474 | 10029 | case UNOP_CAST: |
9eaf6705 TT |
10030 | |
10031 | case UNOP_CAST_TYPE: | |
10032 | case UNOP_REINTERPRET_CAST: | |
10033 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10034 | /* Unary, binary and ternary operators: We have to check |
10035 | their operands. If they are constant, then so is the | |
10036 | result of that operation. For instance, if A and B are | |
10037 | determined to be constants, then so is "A + B". | |
10038 | ||
10039 | UNOP_IND is one exception to the rule above, because the | |
10040 | value of *ADDR is not necessarily a constant, even when | |
10041 | ADDR is. */ | |
65d79d4b SDJ |
10042 | break; |
10043 | ||
10044 | case OP_VAR_VALUE: | |
10045 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10046 | |
65d79d4b | 10047 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10048 | possible that a buggy compiler could mark a variable as |
10049 | constant even when it is not, and TYPE_CONST would return | |
10050 | true in this case, while SYMBOL_CLASS wouldn't. | |
10051 | ||
10052 | We also have to check for function symbols because they | |
10053 | are always constant. */ | |
65d79d4b SDJ |
10054 | { |
10055 | struct symbol *s = exp->elts[i + 2].symbol; | |
10056 | ||
10057 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10058 | && SYMBOL_CLASS (s) != LOC_CONST | |
10059 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10060 | return 0; | |
10061 | break; | |
10062 | } | |
10063 | ||
10064 | /* The default action is to return 0 because we are using | |
10065 | the optimistic approach here: If we don't know something, | |
10066 | then it is not a constant. */ | |
10067 | default: | |
10068 | return 0; | |
10069 | } | |
10070 | } | |
10071 | ||
10072 | return 1; | |
10073 | } | |
10074 | ||
c1fc2657 | 10075 | /* Watchpoint destructor. */ |
3a5c3e22 | 10076 | |
c1fc2657 | 10077 | watchpoint::~watchpoint () |
3a5c3e22 | 10078 | { |
c1fc2657 SM |
10079 | xfree (this->exp_string); |
10080 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10081 | } |
10082 | ||
348d480f PA |
10083 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10084 | ||
10085 | static void | |
10086 | re_set_watchpoint (struct breakpoint *b) | |
10087 | { | |
3a5c3e22 PA |
10088 | struct watchpoint *w = (struct watchpoint *) b; |
10089 | ||
348d480f PA |
10090 | /* Watchpoint can be either on expression using entirely global |
10091 | variables, or it can be on local variables. | |
10092 | ||
10093 | Watchpoints of the first kind are never auto-deleted, and even | |
10094 | persist across program restarts. Since they can use variables | |
10095 | from shared libraries, we need to reparse expression as libraries | |
10096 | are loaded and unloaded. | |
10097 | ||
10098 | Watchpoints on local variables can also change meaning as result | |
10099 | of solib event. For example, if a watchpoint uses both a local | |
10100 | and a global variables in expression, it's a local watchpoint, | |
10101 | but unloading of a shared library will make the expression | |
10102 | invalid. This is not a very common use case, but we still | |
10103 | re-evaluate expression, to avoid surprises to the user. | |
10104 | ||
10105 | Note that for local watchpoints, we re-evaluate it only if | |
10106 | watchpoints frame id is still valid. If it's not, it means the | |
10107 | watchpoint is out of scope and will be deleted soon. In fact, | |
10108 | I'm not sure we'll ever be called in this case. | |
10109 | ||
10110 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10111 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10112 | |
3a5c3e22 PA |
10113 | Don't do anything about disabled watchpoints, since they will be |
10114 | reevaluated again when enabled. */ | |
10115 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10116 | } |
10117 | ||
77b06cd7 TJB |
10118 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10119 | ||
10120 | static int | |
10121 | insert_watchpoint (struct bp_location *bl) | |
10122 | { | |
3a5c3e22 PA |
10123 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10124 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10125 | |
10126 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10127 | w->cond_exp.get ()); |
77b06cd7 TJB |
10128 | } |
10129 | ||
10130 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10131 | ||
10132 | static int | |
73971819 | 10133 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10134 | { |
3a5c3e22 PA |
10135 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10136 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10137 | |
10138 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10139 | w->cond_exp.get ()); |
e09342b5 TJB |
10140 | } |
10141 | ||
e09342b5 | 10142 | static int |
348d480f | 10143 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10144 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10145 | const struct target_waitstatus *ws) |
e09342b5 | 10146 | { |
348d480f | 10147 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10148 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10149 | |
348d480f PA |
10150 | /* Continuable hardware watchpoints are treated as non-existent if the |
10151 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10152 | some data address). Otherwise gdb won't stop on a break instruction | |
10153 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10154 | been defined. Also skip watchpoints which we know did not trigger | |
10155 | (did not match the data address). */ | |
10156 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10157 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10158 | return 0; |
9c06b0b4 | 10159 | |
348d480f | 10160 | return 1; |
9c06b0b4 TJB |
10161 | } |
10162 | ||
348d480f PA |
10163 | static void |
10164 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10165 | { |
348d480f | 10166 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10167 | |
348d480f | 10168 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10169 | } |
10170 | ||
10171 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10172 | hardware watchpoints. */ |
9c06b0b4 TJB |
10173 | |
10174 | static int | |
348d480f | 10175 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10176 | { |
3a5c3e22 PA |
10177 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10178 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10179 | |
10180 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10181 | } |
10182 | ||
10183 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10184 | hardware watchpoints. */ |
9c06b0b4 TJB |
10185 | |
10186 | static int | |
348d480f | 10187 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10188 | { |
efa80663 PA |
10189 | /* Read and access watchpoints only work with hardware support. */ |
10190 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10191 | } |
10192 | ||
9c06b0b4 | 10193 | static enum print_stop_action |
348d480f | 10194 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10195 | { |
348d480f | 10196 | struct breakpoint *b; |
348d480f | 10197 | enum print_stop_action result; |
3a5c3e22 | 10198 | struct watchpoint *w; |
79a45e25 | 10199 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10200 | |
10201 | gdb_assert (bs->bp_location_at != NULL); | |
10202 | ||
348d480f | 10203 | b = bs->breakpoint_at; |
3a5c3e22 | 10204 | w = (struct watchpoint *) b; |
348d480f | 10205 | |
f303dbd6 PA |
10206 | annotate_watchpoint (b->number); |
10207 | maybe_print_thread_hit_breakpoint (uiout); | |
10208 | ||
d7e74731 PA |
10209 | string_file stb; |
10210 | ||
76f9c9cf | 10211 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10212 | switch (b->type) |
10213 | { | |
348d480f | 10214 | case bp_watchpoint: |
9c06b0b4 | 10215 | case bp_hardware_watchpoint: |
112e8700 SM |
10216 | if (uiout->is_mi_like_p ()) |
10217 | uiout->field_string | |
10218 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10219 | mention (b); |
76f9c9cf | 10220 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10221 | uiout->text ("\nOld value = "); |
850645cf | 10222 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10223 | uiout->field_stream ("old", stb); |
10224 | uiout->text ("\nNew value = "); | |
850645cf | 10225 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10226 | uiout->field_stream ("new", stb); |
10227 | uiout->text ("\n"); | |
348d480f PA |
10228 | /* More than one watchpoint may have been triggered. */ |
10229 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10230 | break; |
10231 | ||
10232 | case bp_read_watchpoint: | |
112e8700 SM |
10233 | if (uiout->is_mi_like_p ()) |
10234 | uiout->field_string | |
10235 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10236 | mention (b); |
76f9c9cf | 10237 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10238 | uiout->text ("\nValue = "); |
850645cf | 10239 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10240 | uiout->field_stream ("value", stb); |
10241 | uiout->text ("\n"); | |
348d480f | 10242 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10243 | break; |
10244 | ||
10245 | case bp_access_watchpoint: | |
348d480f PA |
10246 | if (bs->old_val != NULL) |
10247 | { | |
112e8700 SM |
10248 | if (uiout->is_mi_like_p ()) |
10249 | uiout->field_string | |
10250 | ("reason", | |
348d480f PA |
10251 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10252 | mention (b); | |
76f9c9cf | 10253 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10254 | uiout->text ("\nOld value = "); |
850645cf | 10255 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10256 | uiout->field_stream ("old", stb); |
10257 | uiout->text ("\nNew value = "); | |
348d480f PA |
10258 | } |
10259 | else | |
10260 | { | |
10261 | mention (b); | |
112e8700 SM |
10262 | if (uiout->is_mi_like_p ()) |
10263 | uiout->field_string | |
10264 | ("reason", | |
348d480f | 10265 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10266 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10267 | uiout->text ("\nValue = "); |
348d480f | 10268 | } |
850645cf | 10269 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10270 | uiout->field_stream ("new", stb); |
10271 | uiout->text ("\n"); | |
348d480f | 10272 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10273 | break; |
10274 | default: | |
348d480f | 10275 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10276 | } |
10277 | ||
348d480f PA |
10278 | return result; |
10279 | } | |
10280 | ||
10281 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10282 | watchpoints. */ | |
10283 | ||
10284 | static void | |
10285 | print_mention_watchpoint (struct breakpoint *b) | |
10286 | { | |
3a5c3e22 | 10287 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10288 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10289 | const char *tuple_name; |
348d480f PA |
10290 | |
10291 | switch (b->type) | |
10292 | { | |
10293 | case bp_watchpoint: | |
112e8700 | 10294 | uiout->text ("Watchpoint "); |
46b9c129 | 10295 | tuple_name = "wpt"; |
348d480f PA |
10296 | break; |
10297 | case bp_hardware_watchpoint: | |
112e8700 | 10298 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10299 | tuple_name = "wpt"; |
348d480f PA |
10300 | break; |
10301 | case bp_read_watchpoint: | |
112e8700 | 10302 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10303 | tuple_name = "hw-rwpt"; |
348d480f PA |
10304 | break; |
10305 | case bp_access_watchpoint: | |
112e8700 | 10306 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10307 | tuple_name = "hw-awpt"; |
348d480f PA |
10308 | break; |
10309 | default: | |
10310 | internal_error (__FILE__, __LINE__, | |
10311 | _("Invalid hardware watchpoint type.")); | |
10312 | } | |
10313 | ||
46b9c129 | 10314 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10315 | uiout->field_int ("number", b->number); |
10316 | uiout->text (": "); | |
10317 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10318 | } |
10319 | ||
10320 | /* Implement the "print_recreate" breakpoint_ops method for | |
10321 | watchpoints. */ | |
10322 | ||
10323 | static void | |
10324 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10325 | { | |
3a5c3e22 PA |
10326 | struct watchpoint *w = (struct watchpoint *) b; |
10327 | ||
348d480f PA |
10328 | switch (b->type) |
10329 | { | |
10330 | case bp_watchpoint: | |
10331 | case bp_hardware_watchpoint: | |
10332 | fprintf_unfiltered (fp, "watch"); | |
10333 | break; | |
10334 | case bp_read_watchpoint: | |
10335 | fprintf_unfiltered (fp, "rwatch"); | |
10336 | break; | |
10337 | case bp_access_watchpoint: | |
10338 | fprintf_unfiltered (fp, "awatch"); | |
10339 | break; | |
10340 | default: | |
10341 | internal_error (__FILE__, __LINE__, | |
10342 | _("Invalid watchpoint type.")); | |
10343 | } | |
10344 | ||
3a5c3e22 | 10345 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10346 | print_recreate_thread (b, fp); |
348d480f PA |
10347 | } |
10348 | ||
427cd150 TT |
10349 | /* Implement the "explains_signal" breakpoint_ops method for |
10350 | watchpoints. */ | |
10351 | ||
47591c29 | 10352 | static int |
427cd150 TT |
10353 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10354 | { | |
10355 | /* A software watchpoint cannot cause a signal other than | |
10356 | GDB_SIGNAL_TRAP. */ | |
10357 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10358 | return 0; |
427cd150 | 10359 | |
47591c29 | 10360 | return 1; |
427cd150 TT |
10361 | } |
10362 | ||
348d480f PA |
10363 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10364 | ||
2060206e | 10365 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10366 | |
10367 | /* Implement the "insert" breakpoint_ops method for | |
10368 | masked hardware watchpoints. */ | |
10369 | ||
10370 | static int | |
10371 | insert_masked_watchpoint (struct bp_location *bl) | |
10372 | { | |
3a5c3e22 PA |
10373 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10374 | ||
10375 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10376 | bl->watchpoint_type); |
10377 | } | |
10378 | ||
10379 | /* Implement the "remove" breakpoint_ops method for | |
10380 | masked hardware watchpoints. */ | |
10381 | ||
10382 | static int | |
73971819 | 10383 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10384 | { |
3a5c3e22 PA |
10385 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10386 | ||
10387 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10388 | bl->watchpoint_type); |
10389 | } | |
10390 | ||
10391 | /* Implement the "resources_needed" breakpoint_ops method for | |
10392 | masked hardware watchpoints. */ | |
10393 | ||
10394 | static int | |
10395 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10396 | { | |
3a5c3e22 PA |
10397 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10398 | ||
10399 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10400 | } |
10401 | ||
10402 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10403 | masked hardware watchpoints. */ | |
10404 | ||
10405 | static int | |
10406 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10407 | { | |
10408 | return 0; | |
10409 | } | |
10410 | ||
10411 | /* Implement the "print_it" breakpoint_ops method for | |
10412 | masked hardware watchpoints. */ | |
10413 | ||
10414 | static enum print_stop_action | |
10415 | print_it_masked_watchpoint (bpstat bs) | |
10416 | { | |
10417 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10418 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10419 | |
10420 | /* Masked watchpoints have only one location. */ | |
10421 | gdb_assert (b->loc && b->loc->next == NULL); | |
10422 | ||
f303dbd6 PA |
10423 | annotate_watchpoint (b->number); |
10424 | maybe_print_thread_hit_breakpoint (uiout); | |
10425 | ||
348d480f PA |
10426 | switch (b->type) |
10427 | { | |
10428 | case bp_hardware_watchpoint: | |
112e8700 SM |
10429 | if (uiout->is_mi_like_p ()) |
10430 | uiout->field_string | |
10431 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10432 | break; |
10433 | ||
10434 | case bp_read_watchpoint: | |
112e8700 SM |
10435 | if (uiout->is_mi_like_p ()) |
10436 | uiout->field_string | |
10437 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10438 | break; |
10439 | ||
10440 | case bp_access_watchpoint: | |
112e8700 SM |
10441 | if (uiout->is_mi_like_p ()) |
10442 | uiout->field_string | |
10443 | ("reason", | |
348d480f PA |
10444 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10445 | break; | |
10446 | default: | |
10447 | internal_error (__FILE__, __LINE__, | |
10448 | _("Invalid hardware watchpoint type.")); | |
10449 | } | |
10450 | ||
10451 | mention (b); | |
112e8700 | 10452 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10453 | Check the underlying instruction at PC for the memory\n\ |
10454 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10455 | uiout->text ("\n"); |
9c06b0b4 TJB |
10456 | |
10457 | /* More than one watchpoint may have been triggered. */ | |
10458 | return PRINT_UNKNOWN; | |
10459 | } | |
10460 | ||
10461 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10462 | masked hardware watchpoints. */ | |
10463 | ||
10464 | static void | |
10465 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10466 | struct ui_out *uiout) | |
10467 | { | |
3a5c3e22 PA |
10468 | struct watchpoint *w = (struct watchpoint *) b; |
10469 | ||
9c06b0b4 TJB |
10470 | /* Masked watchpoints have only one location. */ |
10471 | gdb_assert (b->loc && b->loc->next == NULL); | |
10472 | ||
112e8700 SM |
10473 | uiout->text ("\tmask "); |
10474 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10475 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10476 | } |
10477 | ||
10478 | /* Implement the "print_mention" breakpoint_ops method for | |
10479 | masked hardware watchpoints. */ | |
10480 | ||
10481 | static void | |
10482 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10483 | { | |
3a5c3e22 | 10484 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10485 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10486 | const char *tuple_name; |
9c06b0b4 TJB |
10487 | |
10488 | switch (b->type) | |
10489 | { | |
10490 | case bp_hardware_watchpoint: | |
112e8700 | 10491 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10492 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10493 | break; |
10494 | case bp_read_watchpoint: | |
112e8700 | 10495 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10496 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10497 | break; |
10498 | case bp_access_watchpoint: | |
112e8700 | 10499 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10500 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10501 | break; |
10502 | default: | |
10503 | internal_error (__FILE__, __LINE__, | |
10504 | _("Invalid hardware watchpoint type.")); | |
10505 | } | |
10506 | ||
46b9c129 | 10507 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10508 | uiout->field_int ("number", b->number); |
10509 | uiout->text (": "); | |
10510 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10511 | } |
10512 | ||
10513 | /* Implement the "print_recreate" breakpoint_ops method for | |
10514 | masked hardware watchpoints. */ | |
10515 | ||
10516 | static void | |
10517 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10518 | { | |
3a5c3e22 | 10519 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10520 | char tmp[40]; |
10521 | ||
10522 | switch (b->type) | |
10523 | { | |
10524 | case bp_hardware_watchpoint: | |
10525 | fprintf_unfiltered (fp, "watch"); | |
10526 | break; | |
10527 | case bp_read_watchpoint: | |
10528 | fprintf_unfiltered (fp, "rwatch"); | |
10529 | break; | |
10530 | case bp_access_watchpoint: | |
10531 | fprintf_unfiltered (fp, "awatch"); | |
10532 | break; | |
10533 | default: | |
10534 | internal_error (__FILE__, __LINE__, | |
10535 | _("Invalid hardware watchpoint type.")); | |
10536 | } | |
10537 | ||
3a5c3e22 PA |
10538 | sprintf_vma (tmp, w->hw_wp_mask); |
10539 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10540 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10541 | } |
10542 | ||
10543 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10544 | ||
2060206e | 10545 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10546 | |
10547 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10548 | ||
10549 | static int | |
10550 | is_masked_watchpoint (const struct breakpoint *b) | |
10551 | { | |
10552 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10553 | } | |
10554 | ||
53a5351d JM |
10555 | /* accessflag: hw_write: watch write, |
10556 | hw_read: watch read, | |
10557 | hw_access: watch access (read or write) */ | |
c906108c | 10558 | static void |
bbc13ae3 | 10559 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10560 | int just_location, int internal) |
c906108c | 10561 | { |
c1fc2657 | 10562 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10563 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
850645cf | 10564 | struct value *mark, *result; |
bb9d5f81 | 10565 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10566 | const char *exp_start = NULL; |
10567 | const char *exp_end = NULL; | |
10568 | const char *tok, *end_tok; | |
9c06b0b4 | 10569 | int toklen = -1; |
bbc13ae3 KS |
10570 | const char *cond_start = NULL; |
10571 | const char *cond_end = NULL; | |
c906108c | 10572 | enum bptype bp_type; |
37e4754d | 10573 | int thread = -1; |
0cf6dd15 | 10574 | int pc = 0; |
9c06b0b4 TJB |
10575 | /* Flag to indicate whether we are going to use masks for |
10576 | the hardware watchpoint. */ | |
10577 | int use_mask = 0; | |
10578 | CORE_ADDR mask = 0; | |
c906108c | 10579 | |
37e4754d LM |
10580 | /* Make sure that we actually have parameters to parse. */ |
10581 | if (arg != NULL && arg[0] != '\0') | |
10582 | { | |
bbc13ae3 KS |
10583 | const char *value_start; |
10584 | ||
10585 | exp_end = arg + strlen (arg); | |
37e4754d | 10586 | |
9c06b0b4 TJB |
10587 | /* Look for "parameter value" pairs at the end |
10588 | of the arguments string. */ | |
bbc13ae3 | 10589 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10590 | { |
10591 | /* Skip whitespace at the end of the argument list. */ | |
10592 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10593 | tok--; | |
10594 | ||
10595 | /* Find the beginning of the last token. | |
10596 | This is the value of the parameter. */ | |
10597 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10598 | tok--; | |
10599 | value_start = tok + 1; | |
10600 | ||
10601 | /* Skip whitespace. */ | |
10602 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10603 | tok--; | |
10604 | ||
10605 | end_tok = tok; | |
10606 | ||
10607 | /* Find the beginning of the second to last token. | |
10608 | This is the parameter itself. */ | |
10609 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10610 | tok--; | |
10611 | tok++; | |
10612 | toklen = end_tok - tok + 1; | |
10613 | ||
61012eef | 10614 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10615 | { |
5d5658a1 | 10616 | struct thread_info *thr; |
9c06b0b4 TJB |
10617 | /* At this point we've found a "thread" token, which means |
10618 | the user is trying to set a watchpoint that triggers | |
10619 | only in a specific thread. */ | |
5d5658a1 | 10620 | const char *endp; |
37e4754d | 10621 | |
9c06b0b4 TJB |
10622 | if (thread != -1) |
10623 | error(_("You can specify only one thread.")); | |
37e4754d | 10624 | |
9c06b0b4 | 10625 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10626 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10627 | |
5d5658a1 | 10628 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10629 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10630 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10631 | |
5d5658a1 | 10632 | thread = thr->global_num; |
9c06b0b4 | 10633 | } |
61012eef | 10634 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10635 | { |
10636 | /* We've found a "mask" token, which means the user wants to | |
10637 | create a hardware watchpoint that is going to have the mask | |
10638 | facility. */ | |
10639 | struct value *mask_value, *mark; | |
37e4754d | 10640 | |
9c06b0b4 TJB |
10641 | if (use_mask) |
10642 | error(_("You can specify only one mask.")); | |
37e4754d | 10643 | |
9c06b0b4 | 10644 | use_mask = just_location = 1; |
37e4754d | 10645 | |
9c06b0b4 TJB |
10646 | mark = value_mark (); |
10647 | mask_value = parse_to_comma_and_eval (&value_start); | |
10648 | mask = value_as_address (mask_value); | |
10649 | value_free_to_mark (mark); | |
10650 | } | |
10651 | else | |
10652 | /* We didn't recognize what we found. We should stop here. */ | |
10653 | break; | |
37e4754d | 10654 | |
9c06b0b4 TJB |
10655 | /* Truncate the string and get rid of the "parameter value" pair before |
10656 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10657 | exp_end = tok; |
9c06b0b4 | 10658 | } |
37e4754d | 10659 | } |
bbc13ae3 KS |
10660 | else |
10661 | exp_end = arg; | |
37e4754d | 10662 | |
bbc13ae3 KS |
10663 | /* Parse the rest of the arguments. From here on out, everything |
10664 | is in terms of a newly allocated string instead of the original | |
10665 | ARG. */ | |
aee1fcdf | 10666 | innermost_block.reset (); |
81b1e71c TT |
10667 | std::string expression (arg, exp_end - arg); |
10668 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10669 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10670 | exp_end = arg; |
fa8a61dc TT |
10671 | /* Remove trailing whitespace from the expression before saving it. |
10672 | This makes the eventual display of the expression string a bit | |
10673 | prettier. */ | |
10674 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10675 | --exp_end; | |
10676 | ||
65d79d4b | 10677 | /* Checking if the expression is not constant. */ |
4d01a485 | 10678 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10679 | { |
10680 | int len; | |
10681 | ||
10682 | len = exp_end - exp_start; | |
10683 | while (len > 0 && isspace (exp_start[len - 1])) | |
10684 | len--; | |
10685 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10686 | } | |
10687 | ||
aee1fcdf | 10688 | exp_valid_block = innermost_block.block (); |
c906108c | 10689 | mark = value_mark (); |
850645cf TT |
10690 | struct value *val_as_value = nullptr; |
10691 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10692 | just_location); | |
06a64a0b | 10693 | |
850645cf | 10694 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10695 | { |
850645cf TT |
10696 | saved_bitpos = value_bitpos (val_as_value); |
10697 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10698 | } |
10699 | ||
850645cf | 10700 | value_ref_ptr val; |
06a64a0b TT |
10701 | if (just_location) |
10702 | { | |
9c06b0b4 TJB |
10703 | int ret; |
10704 | ||
06a64a0b | 10705 | exp_valid_block = NULL; |
850645cf | 10706 | val = release_value (value_addr (result)); |
06a64a0b | 10707 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10708 | |
10709 | if (use_mask) | |
10710 | { | |
850645cf | 10711 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10712 | mask); |
10713 | if (ret == -1) | |
10714 | error (_("This target does not support masked watchpoints.")); | |
10715 | else if (ret == -2) | |
10716 | error (_("Invalid mask or memory region.")); | |
10717 | } | |
06a64a0b | 10718 | } |
850645cf TT |
10719 | else if (val_as_value != NULL) |
10720 | val = release_value (val_as_value); | |
c906108c | 10721 | |
f1735a53 TT |
10722 | tok = skip_spaces (arg); |
10723 | end_tok = skip_to_space (tok); | |
c906108c SS |
10724 | |
10725 | toklen = end_tok - tok; | |
10726 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10727 | { | |
aee1fcdf | 10728 | innermost_block.reset (); |
c906108c | 10729 | tok = cond_start = end_tok + 1; |
4d01a485 | 10730 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10731 | |
10732 | /* The watchpoint expression may not be local, but the condition | |
10733 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10734 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10735 | |
c906108c SS |
10736 | cond_end = tok; |
10737 | } | |
10738 | if (*tok) | |
8a3fe4f8 | 10739 | error (_("Junk at end of command.")); |
c906108c | 10740 | |
441d7c93 PA |
10741 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10742 | ||
10743 | /* Save this because create_internal_breakpoint below invalidates | |
10744 | 'wp_frame'. */ | |
10745 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10746 | |
10747 | /* If the expression is "local", then set up a "watchpoint scope" | |
10748 | breakpoint at the point where we've left the scope of the watchpoint | |
10749 | expression. Create the scope breakpoint before the watchpoint, so | |
10750 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10751 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10752 | { |
441d7c93 PA |
10753 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10754 | ||
10755 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10756 | { |
441d7c93 PA |
10757 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10758 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10759 | ||
edb3359d | 10760 | scope_breakpoint |
441d7c93 | 10761 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10762 | bp_watchpoint_scope, |
10763 | &momentary_breakpoint_ops); | |
d983da9c | 10764 | |
441d7c93 PA |
10765 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10766 | wp_frame = NULL; | |
10767 | ||
edb3359d | 10768 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10769 | |
edb3359d DJ |
10770 | /* Automatically delete the breakpoint when it hits. */ |
10771 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10772 | |
edb3359d | 10773 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10774 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10775 | |
edb3359d | 10776 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10777 | scope_breakpoint->loc->gdbarch = caller_arch; |
10778 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10779 | scope_breakpoint->loc->address |
a6d9a66e UW |
10780 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10781 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10782 | scope_breakpoint->type); |
10783 | } | |
d983da9c DJ |
10784 | } |
10785 | ||
e8369a73 AB |
10786 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10787 | watchpoints here even if hardware watchpoints are turned off, a call | |
10788 | to update_watchpoint later in this function will cause the type to | |
10789 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10790 | ||
10791 | if (accessflag == hw_read) | |
10792 | bp_type = bp_read_watchpoint; | |
10793 | else if (accessflag == hw_access) | |
10794 | bp_type = bp_access_watchpoint; | |
10795 | else | |
10796 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10797 | |
b270e6f9 | 10798 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10799 | |
348d480f | 10800 | if (use_mask) |
b270e6f9 | 10801 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10802 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10803 | else |
b270e6f9 | 10804 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10805 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10806 | w->thread = thread; |
10807 | w->disposition = disp_donttouch; | |
10808 | w->pspace = current_program_space; | |
b22e99fd | 10809 | w->exp = std::move (exp); |
3a5c3e22 PA |
10810 | w->exp_valid_block = exp_valid_block; |
10811 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10812 | if (just_location) |
10813 | { | |
850645cf TT |
10814 | struct type *t = value_type (val.get ()); |
10815 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10816 | |
43cc5389 TT |
10817 | w->exp_string_reparse |
10818 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10819 | |
3a5c3e22 | 10820 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10821 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10822 | } |
10823 | else | |
3a5c3e22 | 10824 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10825 | |
10826 | if (use_mask) | |
10827 | { | |
3a5c3e22 | 10828 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10829 | } |
10830 | else | |
10831 | { | |
3a5c3e22 | 10832 | w->val = val; |
bb9d5f81 PP |
10833 | w->val_bitpos = saved_bitpos; |
10834 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10835 | w->val_valid = 1; |
9c06b0b4 | 10836 | } |
77b06cd7 | 10837 | |
c906108c | 10838 | if (cond_start) |
c1fc2657 | 10839 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10840 | else |
c1fc2657 | 10841 | w->cond_string = 0; |
c5aa993b | 10842 | |
441d7c93 | 10843 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10844 | { |
441d7c93 | 10845 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10846 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10847 | } |
c906108c | 10848 | else |
f6bc2008 | 10849 | { |
3a5c3e22 PA |
10850 | w->watchpoint_frame = null_frame_id; |
10851 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10852 | } |
c906108c | 10853 | |
d983da9c | 10854 | if (scope_breakpoint != NULL) |
c906108c | 10855 | { |
d983da9c DJ |
10856 | /* The scope breakpoint is related to the watchpoint. We will |
10857 | need to act on them together. */ | |
c1fc2657 | 10858 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10859 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10860 | } |
d983da9c | 10861 | |
06a64a0b TT |
10862 | if (!just_location) |
10863 | value_free_to_mark (mark); | |
2d134ed3 | 10864 | |
b270e6f9 TT |
10865 | /* Finally update the new watchpoint. This creates the locations |
10866 | that should be inserted. */ | |
10867 | update_watchpoint (w.get (), 1); | |
a9634178 | 10868 | |
b270e6f9 | 10869 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10870 | } |
10871 | ||
e09342b5 | 10872 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10873 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10874 | |
c906108c | 10875 | static int |
a6535de1 | 10876 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10877 | { |
10878 | int found_memory_cnt = 0; | |
10879 | ||
10880 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10881 | if (!can_use_hw_watchpoints) |
c906108c | 10882 | return 0; |
c5aa993b | 10883 | |
a6535de1 TT |
10884 | gdb_assert (!vals.empty ()); |
10885 | struct value *head = vals[0].get (); | |
10886 | ||
5c44784c JM |
10887 | /* Make sure that the value of the expression depends only upon |
10888 | memory contents, and values computed from them within GDB. If we | |
10889 | find any register references or function calls, we can't use a | |
10890 | hardware watchpoint. | |
10891 | ||
10892 | The idea here is that evaluating an expression generates a series | |
10893 | of values, one holding the value of every subexpression. (The | |
10894 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10895 | a*b+c.) GDB's values hold almost enough information to establish | |
10896 | the criteria given above --- they identify memory lvalues, | |
10897 | register lvalues, computed values, etcetera. So we can evaluate | |
10898 | the expression, and then scan the chain of values that leaves | |
10899 | behind to decide whether we can detect any possible change to the | |
10900 | expression's final value using only hardware watchpoints. | |
10901 | ||
10902 | However, I don't think that the values returned by inferior | |
10903 | function calls are special in any way. So this function may not | |
10904 | notice that an expression involving an inferior function call | |
10905 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10906 | for (const value_ref_ptr &iter : vals) |
c906108c | 10907 | { |
a6535de1 TT |
10908 | struct value *v = iter.get (); |
10909 | ||
5c44784c | 10910 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10911 | { |
8464be76 DJ |
10912 | if (v != head && value_lazy (v)) |
10913 | /* A lazy memory lvalue in the chain is one that GDB never | |
10914 | needed to fetch; we either just used its address (e.g., | |
10915 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10916 | in `a,b'). This doesn't apply to HEAD; if that is | |
10917 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10918 | ; |
53a5351d | 10919 | else |
5c44784c JM |
10920 | { |
10921 | /* Ahh, memory we actually used! Check if we can cover | |
10922 | it with hardware watchpoints. */ | |
df407dfe | 10923 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10924 | |
10925 | /* We only watch structs and arrays if user asked for it | |
10926 | explicitly, never if they just happen to appear in a | |
10927 | middle of some value chain. */ | |
10928 | if (v == head | |
10929 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10930 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10931 | { | |
42ae5230 | 10932 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10933 | int len; |
10934 | int num_regs; | |
10935 | ||
a9634178 | 10936 | len = (target_exact_watchpoints |
e09342b5 TJB |
10937 | && is_scalar_type_recursive (vtype))? |
10938 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10939 | |
e09342b5 TJB |
10940 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10941 | if (!num_regs) | |
2e70b7b9 MS |
10942 | return 0; |
10943 | else | |
e09342b5 | 10944 | found_memory_cnt += num_regs; |
2e70b7b9 | 10945 | } |
5c44784c | 10946 | } |
c5aa993b | 10947 | } |
5086187c AC |
10948 | else if (VALUE_LVAL (v) != not_lval |
10949 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10950 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10951 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10952 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10953 | } |
10954 | ||
10955 | /* The expression itself looks suitable for using a hardware | |
10956 | watchpoint, but give the target machine a chance to reject it. */ | |
10957 | return found_memory_cnt; | |
10958 | } | |
10959 | ||
8b93c638 | 10960 | void |
f2fc3015 | 10961 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10962 | { |
84f4c1fe | 10963 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10964 | } |
10965 | ||
06a64a0b TT |
10966 | /* A helper function that looks for the "-location" argument and then |
10967 | calls watch_command_1. */ | |
10968 | ||
10969 | static void | |
0b39b52e | 10970 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10971 | { |
10972 | int just_location = 0; | |
10973 | ||
10974 | if (arg | |
10975 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10976 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10977 | { | |
e9cafbcc | 10978 | arg = skip_spaces (arg); |
06a64a0b TT |
10979 | just_location = 1; |
10980 | } | |
10981 | ||
84f4c1fe | 10982 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10983 | } |
8926118c | 10984 | |
c5aa993b | 10985 | static void |
0b39b52e | 10986 | watch_command (const char *arg, int from_tty) |
c906108c | 10987 | { |
06a64a0b | 10988 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10989 | } |
10990 | ||
8b93c638 | 10991 | void |
f2fc3015 | 10992 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10993 | { |
84f4c1fe | 10994 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10995 | } |
8926118c | 10996 | |
c5aa993b | 10997 | static void |
0b39b52e | 10998 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10999 | { |
06a64a0b | 11000 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11001 | } |
11002 | ||
8b93c638 | 11003 | void |
f2fc3015 | 11004 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11005 | { |
84f4c1fe | 11006 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11007 | } |
8926118c | 11008 | |
c5aa993b | 11009 | static void |
0b39b52e | 11010 | awatch_command (const char *arg, int from_tty) |
c906108c | 11011 | { |
06a64a0b | 11012 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11013 | } |
c906108c | 11014 | \f |
c5aa993b | 11015 | |
cfc31633 PA |
11016 | /* Data for the FSM that manages the until(location)/advance commands |
11017 | in infcmd.c. Here because it uses the mechanisms of | |
11018 | breakpoints. */ | |
c906108c | 11019 | |
cfc31633 | 11020 | struct until_break_fsm |
bfec99b2 | 11021 | { |
cfc31633 PA |
11022 | /* The base class. */ |
11023 | struct thread_fsm thread_fsm; | |
11024 | ||
11025 | /* The thread that as current when the command was executed. */ | |
11026 | int thread; | |
11027 | ||
11028 | /* The breakpoint set at the destination location. */ | |
11029 | struct breakpoint *location_breakpoint; | |
11030 | ||
11031 | /* Breakpoint set at the return address in the caller frame. May be | |
11032 | NULL. */ | |
11033 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11034 | }; |
11035 | ||
8980e177 PA |
11036 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11037 | struct thread_info *thread); | |
11038 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11039 | struct thread_info *thread); | |
cfc31633 PA |
11040 | static enum async_reply_reason |
11041 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11042 | ||
11043 | /* until_break_fsm's vtable. */ | |
11044 | ||
11045 | static struct thread_fsm_ops until_break_fsm_ops = | |
11046 | { | |
11047 | NULL, /* dtor */ | |
11048 | until_break_fsm_clean_up, | |
11049 | until_break_fsm_should_stop, | |
11050 | NULL, /* return_value */ | |
11051 | until_break_fsm_async_reply_reason, | |
11052 | }; | |
11053 | ||
11054 | /* Allocate a new until_break_command_fsm. */ | |
11055 | ||
11056 | static struct until_break_fsm * | |
8980e177 | 11057 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11058 | breakpoint_up &&location_breakpoint, |
11059 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11060 | { |
11061 | struct until_break_fsm *sm; | |
11062 | ||
11063 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11064 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11065 | |
11066 | sm->thread = thread; | |
454dafbd TT |
11067 | sm->location_breakpoint = location_breakpoint.release (); |
11068 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11069 | |
11070 | return sm; | |
11071 | } | |
11072 | ||
11073 | /* Implementation of the 'should_stop' FSM method for the | |
11074 | until(location)/advance commands. */ | |
11075 | ||
11076 | static int | |
8980e177 PA |
11077 | until_break_fsm_should_stop (struct thread_fsm *self, |
11078 | struct thread_info *tp) | |
cfc31633 PA |
11079 | { |
11080 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11081 | |
11082 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11083 | sm->location_breakpoint) != NULL | |
11084 | || (sm->caller_breakpoint != NULL | |
11085 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11086 | sm->caller_breakpoint) != NULL)) | |
11087 | thread_fsm_set_finished (self); | |
11088 | ||
11089 | return 1; | |
11090 | } | |
11091 | ||
11092 | /* Implementation of the 'clean_up' FSM method for the | |
11093 | until(location)/advance commands. */ | |
11094 | ||
c2c6d25f | 11095 | static void |
8980e177 PA |
11096 | until_break_fsm_clean_up (struct thread_fsm *self, |
11097 | struct thread_info *thread) | |
43ff13b4 | 11098 | { |
cfc31633 | 11099 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11100 | |
cfc31633 PA |
11101 | /* Clean up our temporary breakpoints. */ |
11102 | if (sm->location_breakpoint != NULL) | |
11103 | { | |
11104 | delete_breakpoint (sm->location_breakpoint); | |
11105 | sm->location_breakpoint = NULL; | |
11106 | } | |
11107 | if (sm->caller_breakpoint != NULL) | |
11108 | { | |
11109 | delete_breakpoint (sm->caller_breakpoint); | |
11110 | sm->caller_breakpoint = NULL; | |
11111 | } | |
11112 | delete_longjmp_breakpoint (sm->thread); | |
11113 | } | |
11114 | ||
11115 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11116 | until(location)/advance commands. */ | |
11117 | ||
11118 | static enum async_reply_reason | |
11119 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11120 | { | |
11121 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11122 | } |
11123 | ||
c906108c | 11124 | void |
f2fc3015 | 11125 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11126 | { |
8556afb4 PA |
11127 | struct frame_info *frame; |
11128 | struct gdbarch *frame_gdbarch; | |
11129 | struct frame_id stack_frame_id; | |
11130 | struct frame_id caller_frame_id; | |
ffc2605c | 11131 | struct cleanup *old_chain; |
186c406b TT |
11132 | int thread; |
11133 | struct thread_info *tp; | |
cfc31633 | 11134 | struct until_break_fsm *sm; |
c906108c | 11135 | |
70509625 | 11136 | clear_proceed_status (0); |
c906108c SS |
11137 | |
11138 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11139 | this function. */ |
c5aa993b | 11140 | |
ffc2605c | 11141 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11142 | |
6c5b2ebe PA |
11143 | std::vector<symtab_and_line> sals |
11144 | = (last_displayed_sal_is_valid () | |
11145 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11146 | get_last_displayed_symtab (), | |
11147 | get_last_displayed_line ()) | |
11148 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11149 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11150 | |
6c5b2ebe | 11151 | if (sals.size () != 1) |
8a3fe4f8 | 11152 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11153 | |
6c5b2ebe | 11154 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11155 | |
c906108c | 11156 | if (*arg) |
8a3fe4f8 | 11157 | error (_("Junk at end of arguments.")); |
c5aa993b | 11158 | |
c906108c | 11159 | resolve_sal_pc (&sal); |
c5aa993b | 11160 | |
186c406b | 11161 | tp = inferior_thread (); |
5d5658a1 | 11162 | thread = tp->global_num; |
186c406b | 11163 | |
883bc8d1 PA |
11164 | old_chain = make_cleanup (null_cleanup, NULL); |
11165 | ||
8556afb4 PA |
11166 | /* Note linespec handling above invalidates the frame chain. |
11167 | Installing a breakpoint also invalidates the frame chain (as it | |
11168 | may need to switch threads), so do any frame handling before | |
11169 | that. */ | |
11170 | ||
11171 | frame = get_selected_frame (NULL); | |
11172 | frame_gdbarch = get_frame_arch (frame); | |
11173 | stack_frame_id = get_stack_frame_id (frame); | |
11174 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11175 | |
ae66c1fc EZ |
11176 | /* Keep within the current frame, or in frames called by the current |
11177 | one. */ | |
edb3359d | 11178 | |
454dafbd | 11179 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11180 | if (frame_id_p (caller_frame_id)) |
c906108c | 11181 | { |
883bc8d1 | 11182 | struct symtab_and_line sal2; |
cfc31633 | 11183 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11184 | |
11185 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11186 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11187 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11188 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11189 | sal2, | |
11190 | caller_frame_id, | |
11191 | bp_until); | |
186c406b | 11192 | |
883bc8d1 | 11193 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11194 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11195 | } |
c5aa993b | 11196 | |
c70a6932 JK |
11197 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11198 | frame = NULL; | |
11199 | ||
454dafbd | 11200 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11201 | if (anywhere) |
11202 | /* If the user told us to continue until a specified location, | |
11203 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11204 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11205 | null_frame_id, bp_until); | |
883bc8d1 PA |
11206 | else |
11207 | /* Otherwise, specify the selected frame, because we want to stop | |
11208 | only at the very same frame. */ | |
cfc31633 PA |
11209 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11210 | stack_frame_id, bp_until); | |
883bc8d1 | 11211 | |
8980e177 | 11212 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11213 | std::move (location_breakpoint), |
11214 | std::move (caller_breakpoint)); | |
cfc31633 | 11215 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11216 | |
cfc31633 | 11217 | discard_cleanups (old_chain); |
f107f563 | 11218 | |
cfc31633 | 11219 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11220 | } |
ae66c1fc | 11221 | |
c906108c SS |
11222 | /* This function attempts to parse an optional "if <cond>" clause |
11223 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11224 | |
c906108c SS |
11225 | Else, it returns a pointer to the condition string. (It does not |
11226 | attempt to evaluate the string against a particular block.) And, | |
11227 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11228 | if clause in the arg string. */ |
53a5351d | 11229 | |
63160a43 PA |
11230 | const char * |
11231 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11232 | { |
63160a43 | 11233 | const char *cond_string; |
c5aa993b JM |
11234 | |
11235 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11236 | return NULL; |
c5aa993b | 11237 | |
4a64f543 | 11238 | /* Skip the "if" keyword. */ |
c906108c | 11239 | (*arg) += 2; |
c5aa993b | 11240 | |
c906108c | 11241 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11242 | condition string. */ |
f1735a53 | 11243 | *arg = skip_spaces (*arg); |
c906108c | 11244 | cond_string = *arg; |
c5aa993b | 11245 | |
4a64f543 MS |
11246 | /* Assume that the condition occupies the remainder of the arg |
11247 | string. */ | |
c906108c | 11248 | (*arg) += strlen (cond_string); |
c5aa993b | 11249 | |
c906108c SS |
11250 | return cond_string; |
11251 | } | |
c5aa993b | 11252 | |
c906108c SS |
11253 | /* Commands to deal with catching events, such as signals, exceptions, |
11254 | process start/exit, etc. */ | |
c5aa993b JM |
11255 | |
11256 | typedef enum | |
11257 | { | |
44feb3ce TT |
11258 | catch_fork_temporary, catch_vfork_temporary, |
11259 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11260 | } |
11261 | catch_fork_kind; | |
11262 | ||
c906108c | 11263 | static void |
eb4c3f4a | 11264 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11265 | struct cmd_list_element *command) |
c906108c | 11266 | { |
a6d9a66e | 11267 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11268 | const char *cond_string = NULL; |
44feb3ce TT |
11269 | catch_fork_kind fork_kind; |
11270 | int tempflag; | |
11271 | ||
11272 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11273 | tempflag = (fork_kind == catch_fork_temporary | |
11274 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11275 | |
44feb3ce TT |
11276 | if (!arg) |
11277 | arg = ""; | |
f1735a53 | 11278 | arg = skip_spaces (arg); |
c5aa993b | 11279 | |
c906108c | 11280 | /* The allowed syntax is: |
c5aa993b JM |
11281 | catch [v]fork |
11282 | catch [v]fork if <cond> | |
11283 | ||
4a64f543 | 11284 | First, check if there's an if clause. */ |
c906108c | 11285 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11286 | |
c906108c | 11287 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11288 | error (_("Junk at end of arguments.")); |
c5aa993b | 11289 | |
c906108c | 11290 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11291 | and enable reporting of such events. */ |
c5aa993b JM |
11292 | switch (fork_kind) |
11293 | { | |
44feb3ce TT |
11294 | case catch_fork_temporary: |
11295 | case catch_fork_permanent: | |
a6d9a66e | 11296 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11297 | &catch_fork_breakpoint_ops); |
c906108c | 11298 | break; |
44feb3ce TT |
11299 | case catch_vfork_temporary: |
11300 | case catch_vfork_permanent: | |
a6d9a66e | 11301 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11302 | &catch_vfork_breakpoint_ops); |
c906108c | 11303 | break; |
c5aa993b | 11304 | default: |
8a3fe4f8 | 11305 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11306 | break; |
c5aa993b | 11307 | } |
c906108c SS |
11308 | } |
11309 | ||
11310 | static void | |
eb4c3f4a | 11311 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11312 | struct cmd_list_element *command) |
c906108c | 11313 | { |
a6d9a66e | 11314 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11315 | int tempflag; |
63160a43 | 11316 | const char *cond_string = NULL; |
c906108c | 11317 | |
44feb3ce TT |
11318 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11319 | ||
11320 | if (!arg) | |
11321 | arg = ""; | |
f1735a53 | 11322 | arg = skip_spaces (arg); |
c906108c SS |
11323 | |
11324 | /* The allowed syntax is: | |
c5aa993b JM |
11325 | catch exec |
11326 | catch exec if <cond> | |
c906108c | 11327 | |
4a64f543 | 11328 | First, check if there's an if clause. */ |
c906108c SS |
11329 | cond_string = ep_parse_optional_if_clause (&arg); |
11330 | ||
11331 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11332 | error (_("Junk at end of arguments.")); |
c906108c | 11333 | |
b270e6f9 TT |
11334 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11335 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11336 | &catch_exec_breakpoint_ops); |
11337 | c->exec_pathname = NULL; | |
11338 | ||
b270e6f9 | 11339 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11340 | } |
c5aa993b | 11341 | |
9ac4176b | 11342 | void |
28010a5d PA |
11343 | init_ada_exception_breakpoint (struct breakpoint *b, |
11344 | struct gdbarch *gdbarch, | |
11345 | struct symtab_and_line sal, | |
f2fc3015 | 11346 | const char *addr_string, |
c0a91b2b | 11347 | const struct breakpoint_ops *ops, |
28010a5d | 11348 | int tempflag, |
349774ef | 11349 | int enabled, |
28010a5d | 11350 | int from_tty) |
f7f9143b | 11351 | { |
f7f9143b JB |
11352 | if (from_tty) |
11353 | { | |
5af949e3 UW |
11354 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11355 | if (!loc_gdbarch) | |
11356 | loc_gdbarch = gdbarch; | |
11357 | ||
6c95b8df PA |
11358 | describe_other_breakpoints (loc_gdbarch, |
11359 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11360 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11361 | version for exception catchpoints, because two catchpoints | |
11362 | used for different exception names will use the same address. | |
11363 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11364 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11365 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11366 | the user what type of catchpoint it is. The above is good |
11367 | enough for now, though. */ | |
11368 | } | |
11369 | ||
28010a5d | 11370 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11371 | |
349774ef | 11372 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11373 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11374 | b->location = string_to_event_location (&addr_string, |
11375 | language_def (language_ada)); | |
f7f9143b | 11376 | b->language = language_ada; |
f7f9143b JB |
11377 | } |
11378 | ||
c906108c | 11379 | static void |
981a3fb3 | 11380 | catch_command (const char *arg, int from_tty) |
c906108c | 11381 | { |
44feb3ce | 11382 | error (_("Catch requires an event name.")); |
c906108c SS |
11383 | } |
11384 | \f | |
11385 | ||
11386 | static void | |
981a3fb3 | 11387 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11388 | { |
44feb3ce | 11389 | error (_("Catch requires an event name.")); |
c906108c SS |
11390 | } |
11391 | ||
81b1e71c | 11392 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11393 | |
11394 | static int | |
81b1e71c | 11395 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11396 | { |
81b1e71c TT |
11397 | uintptr_t ua = (uintptr_t) a; |
11398 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11399 | |
81b1e71c | 11400 | if (a->number < b->number) |
8a2c437b | 11401 | return -1; |
81b1e71c | 11402 | else if (a->number > b->number) |
8a2c437b TT |
11403 | return 1; |
11404 | ||
11405 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11406 | the number 0. */ | |
11407 | if (ua < ub) | |
11408 | return -1; | |
94b0e70d | 11409 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11410 | } |
11411 | ||
80f8a6eb | 11412 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11413 | |
11414 | static void | |
0b39b52e | 11415 | clear_command (const char *arg, int from_tty) |
c906108c | 11416 | { |
81b1e71c | 11417 | struct breakpoint *b; |
c906108c | 11418 | int default_match; |
c906108c | 11419 | |
6c5b2ebe PA |
11420 | std::vector<symtab_and_line> decoded_sals; |
11421 | symtab_and_line last_sal; | |
11422 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11423 | if (arg) |
11424 | { | |
6c5b2ebe PA |
11425 | decoded_sals |
11426 | = decode_line_with_current_source (arg, | |
11427 | (DECODE_LINE_FUNFIRSTLINE | |
11428 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11429 | default_match = 0; |
6c5b2ebe | 11430 | sals = decoded_sals; |
c906108c SS |
11431 | } |
11432 | else | |
11433 | { | |
1bfeeb0f JL |
11434 | /* Set sal's line, symtab, pc, and pspace to the values |
11435 | corresponding to the last call to print_frame_info. If the | |
11436 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11437 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11438 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11439 | error (_("No source file specified.")); |
c906108c | 11440 | |
c906108c | 11441 | default_match = 1; |
6c5b2ebe | 11442 | sals = last_sal; |
c906108c SS |
11443 | } |
11444 | ||
4a64f543 MS |
11445 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11446 | seems, because all existing breakpoints typically have both | |
11447 | file/line and pc set. So, if clear is given file/line, we can | |
11448 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11449 | |
11450 | We only support clearing given the address explicitly | |
11451 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11452 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11453 | due to optimization, all in one block. |
4a64f543 MS |
11454 | |
11455 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11456 | PC corresponding to the same file:line, the breakpoint won't |
11457 | be cleared. We probably can still clear the breakpoint, but | |
11458 | since the other PC value is never presented to user, user | |
11459 | can only find it by guessing, and it does not seem important | |
11460 | to support that. */ | |
11461 | ||
4a64f543 MS |
11462 | /* For each line spec given, delete bps which correspond to it. Do |
11463 | it in two passes, solely to preserve the current behavior that | |
11464 | from_tty is forced true if we delete more than one | |
11465 | breakpoint. */ | |
c906108c | 11466 | |
81b1e71c | 11467 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11468 | for (const auto &sal : sals) |
c906108c | 11469 | { |
05cba821 JK |
11470 | const char *sal_fullname; |
11471 | ||
c906108c | 11472 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11473 | If line given (pc == 0), clear all bpts on specified line. |
11474 | If defaulting, clear all bpts on default line | |
c906108c | 11475 | or at default pc. |
c5aa993b JM |
11476 | |
11477 | defaulting sal.pc != 0 tests to do | |
11478 | ||
11479 | 0 1 pc | |
11480 | 1 1 pc _and_ line | |
11481 | 0 0 line | |
11482 | 1 0 <can't happen> */ | |
c906108c | 11483 | |
05cba821 JK |
11484 | sal_fullname = (sal.symtab == NULL |
11485 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11486 | |
4a64f543 | 11487 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11488 | ALL_BREAKPOINTS (b) |
c5aa993b | 11489 | { |
0d381245 | 11490 | int match = 0; |
4a64f543 | 11491 | /* Are we going to delete b? */ |
cc60f2e3 | 11492 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11493 | { |
11494 | struct bp_location *loc = b->loc; | |
11495 | for (; loc; loc = loc->next) | |
11496 | { | |
f8eba3c6 TT |
11497 | /* If the user specified file:line, don't allow a PC |
11498 | match. This matches historical gdb behavior. */ | |
11499 | int pc_match = (!sal.explicit_line | |
11500 | && sal.pc | |
11501 | && (loc->pspace == sal.pspace) | |
11502 | && (loc->address == sal.pc) | |
11503 | && (!section_is_overlay (loc->section) | |
11504 | || loc->section == sal.section)); | |
4aac40c8 TT |
11505 | int line_match = 0; |
11506 | ||
11507 | if ((default_match || sal.explicit_line) | |
2f202fde | 11508 | && loc->symtab != NULL |
05cba821 | 11509 | && sal_fullname != NULL |
4aac40c8 | 11510 | && sal.pspace == loc->pspace |
05cba821 JK |
11511 | && loc->line_number == sal.line |
11512 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11513 | sal_fullname) == 0) | |
11514 | line_match = 1; | |
4aac40c8 | 11515 | |
0d381245 VP |
11516 | if (pc_match || line_match) |
11517 | { | |
11518 | match = 1; | |
11519 | break; | |
11520 | } | |
11521 | } | |
11522 | } | |
11523 | ||
11524 | if (match) | |
81b1e71c | 11525 | found.push_back (b); |
c906108c | 11526 | } |
80f8a6eb | 11527 | } |
8a2c437b | 11528 | |
80f8a6eb | 11529 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11530 | if (found.empty ()) |
80f8a6eb MS |
11531 | { |
11532 | if (arg) | |
8a3fe4f8 | 11533 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11534 | else |
8a3fe4f8 | 11535 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11536 | } |
c906108c | 11537 | |
8a2c437b | 11538 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11539 | std::sort (found.begin (), found.end (), |
11540 | [] (const breakpoint *a, const breakpoint *b) | |
11541 | { | |
11542 | return compare_breakpoints (a, b) < 0; | |
11543 | }); | |
11544 | found.erase (std::unique (found.begin (), found.end (), | |
11545 | [] (const breakpoint *a, const breakpoint *b) | |
11546 | { | |
11547 | return compare_breakpoints (a, b) == 0; | |
11548 | }), | |
11549 | found.end ()); | |
8a2c437b | 11550 | |
81b1e71c | 11551 | if (found.size () > 1) |
4a64f543 | 11552 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11553 | if (from_tty) |
a3f17187 | 11554 | { |
81b1e71c | 11555 | if (found.size () == 1) |
a3f17187 AC |
11556 | printf_unfiltered (_("Deleted breakpoint ")); |
11557 | else | |
11558 | printf_unfiltered (_("Deleted breakpoints ")); | |
11559 | } | |
d6e956e5 | 11560 | |
81b1e71c | 11561 | for (breakpoint *iter : found) |
80f8a6eb | 11562 | { |
c5aa993b | 11563 | if (from_tty) |
81b1e71c TT |
11564 | printf_unfiltered ("%d ", iter->number); |
11565 | delete_breakpoint (iter); | |
c906108c | 11566 | } |
80f8a6eb MS |
11567 | if (from_tty) |
11568 | putchar_unfiltered ('\n'); | |
c906108c SS |
11569 | } |
11570 | \f | |
11571 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11572 | all breakpoints that are marked for deletion, whether hit or not. | |
11573 | This is called after any breakpoint is hit, or after errors. */ | |
11574 | ||
11575 | void | |
fba45db2 | 11576 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11577 | { |
35df4500 | 11578 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11579 | |
11580 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11581 | if (bs->breakpoint_at |
11582 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11583 | && bs->stop) |
f431efe5 | 11584 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11585 | |
35df4500 | 11586 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11587 | { |
b5de0fa7 | 11588 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11589 | delete_breakpoint (b); |
11590 | } | |
c906108c SS |
11591 | } |
11592 | ||
4a64f543 MS |
11593 | /* A comparison function for bp_location AP and BP being interfaced to |
11594 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11595 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11596 | secondarily by ordering first permanent elements and |
4a64f543 | 11597 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11598 | qsort being an unstable algorithm. */ |
876fa593 JK |
11599 | |
11600 | static int | |
f5336ca5 | 11601 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11602 | { |
9a3c8263 SM |
11603 | const struct bp_location *a = *(const struct bp_location **) ap; |
11604 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11605 | |
11606 | if (a->address != b->address) | |
11607 | return (a->address > b->address) - (a->address < b->address); | |
11608 | ||
dea2aa5f LM |
11609 | /* Sort locations at the same address by their pspace number, keeping |
11610 | locations of the same inferior (in a multi-inferior environment) | |
11611 | grouped. */ | |
11612 | ||
11613 | if (a->pspace->num != b->pspace->num) | |
11614 | return ((a->pspace->num > b->pspace->num) | |
11615 | - (a->pspace->num < b->pspace->num)); | |
11616 | ||
876fa593 | 11617 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11618 | if (a->permanent != b->permanent) |
11619 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11620 | |
c56a97f9 JK |
11621 | /* Make the internal GDB representation stable across GDB runs |
11622 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11623 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11624 | |
11625 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11626 | return ((a->owner->number > b->owner->number) |
11627 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11628 | |
11629 | return (a > b) - (a < b); | |
11630 | } | |
11631 | ||
f5336ca5 PA |
11632 | /* Set bp_locations_placed_address_before_address_max and |
11633 | bp_locations_shadow_len_after_address_max according to the current | |
11634 | content of the bp_locations array. */ | |
f7545552 TT |
11635 | |
11636 | static void | |
f5336ca5 | 11637 | bp_locations_target_extensions_update (void) |
f7545552 | 11638 | { |
876fa593 JK |
11639 | struct bp_location *bl, **blp_tmp; |
11640 | ||
f5336ca5 PA |
11641 | bp_locations_placed_address_before_address_max = 0; |
11642 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11643 | |
11644 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11645 | { | |
11646 | CORE_ADDR start, end, addr; | |
11647 | ||
11648 | if (!bp_location_has_shadow (bl)) | |
11649 | continue; | |
11650 | ||
11651 | start = bl->target_info.placed_address; | |
11652 | end = start + bl->target_info.shadow_len; | |
11653 | ||
11654 | gdb_assert (bl->address >= start); | |
11655 | addr = bl->address - start; | |
f5336ca5 PA |
11656 | if (addr > bp_locations_placed_address_before_address_max) |
11657 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11658 | |
11659 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11660 | ||
11661 | gdb_assert (bl->address < end); | |
11662 | addr = end - bl->address; | |
f5336ca5 PA |
11663 | if (addr > bp_locations_shadow_len_after_address_max) |
11664 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11665 | } |
f7545552 TT |
11666 | } |
11667 | ||
1e4d1764 YQ |
11668 | /* Download tracepoint locations if they haven't been. */ |
11669 | ||
11670 | static void | |
11671 | download_tracepoint_locations (void) | |
11672 | { | |
7ed2c994 | 11673 | struct breakpoint *b; |
dd2e65cc | 11674 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11675 | |
5ed8105e | 11676 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11677 | |
7ed2c994 | 11678 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11679 | { |
7ed2c994 | 11680 | struct bp_location *bl; |
1e4d1764 | 11681 | struct tracepoint *t; |
f2a8bc8a | 11682 | int bp_location_downloaded = 0; |
1e4d1764 | 11683 | |
7ed2c994 | 11684 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11685 | ? !may_insert_fast_tracepoints |
11686 | : !may_insert_tracepoints)) | |
11687 | continue; | |
11688 | ||
dd2e65cc YQ |
11689 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11690 | { | |
11691 | if (target_can_download_tracepoint ()) | |
11692 | can_download_tracepoint = TRIBOOL_TRUE; | |
11693 | else | |
11694 | can_download_tracepoint = TRIBOOL_FALSE; | |
11695 | } | |
11696 | ||
11697 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11698 | break; | |
11699 | ||
7ed2c994 YQ |
11700 | for (bl = b->loc; bl; bl = bl->next) |
11701 | { | |
11702 | /* In tracepoint, locations are _never_ duplicated, so | |
11703 | should_be_inserted is equivalent to | |
11704 | unduplicated_should_be_inserted. */ | |
11705 | if (!should_be_inserted (bl) || bl->inserted) | |
11706 | continue; | |
1e4d1764 | 11707 | |
7ed2c994 | 11708 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11709 | |
7ed2c994 | 11710 | target_download_tracepoint (bl); |
1e4d1764 | 11711 | |
7ed2c994 | 11712 | bl->inserted = 1; |
f2a8bc8a | 11713 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11714 | } |
11715 | t = (struct tracepoint *) b; | |
11716 | t->number_on_target = b->number; | |
f2a8bc8a | 11717 | if (bp_location_downloaded) |
76727919 | 11718 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11719 | } |
1e4d1764 YQ |
11720 | } |
11721 | ||
934709f0 PW |
11722 | /* Swap the insertion/duplication state between two locations. */ |
11723 | ||
11724 | static void | |
11725 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11726 | { | |
11727 | const int left_inserted = left->inserted; | |
11728 | const int left_duplicate = left->duplicate; | |
b775012e | 11729 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11730 | const struct bp_target_info left_target_info = left->target_info; |
11731 | ||
1e4d1764 YQ |
11732 | /* Locations of tracepoints can never be duplicated. */ |
11733 | if (is_tracepoint (left->owner)) | |
11734 | gdb_assert (!left->duplicate); | |
11735 | if (is_tracepoint (right->owner)) | |
11736 | gdb_assert (!right->duplicate); | |
11737 | ||
934709f0 PW |
11738 | left->inserted = right->inserted; |
11739 | left->duplicate = right->duplicate; | |
b775012e | 11740 | left->needs_update = right->needs_update; |
934709f0 PW |
11741 | left->target_info = right->target_info; |
11742 | right->inserted = left_inserted; | |
11743 | right->duplicate = left_duplicate; | |
b775012e | 11744 | right->needs_update = left_needs_update; |
934709f0 PW |
11745 | right->target_info = left_target_info; |
11746 | } | |
11747 | ||
b775012e LM |
11748 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11749 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11750 | conditions on the target's side. Such conditions need to be updated on | |
11751 | the target. */ | |
11752 | ||
11753 | static void | |
11754 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11755 | { | |
11756 | struct bp_location **locp = NULL, **loc2p; | |
11757 | struct bp_location *loc; | |
11758 | CORE_ADDR address = 0; | |
11759 | int pspace_num; | |
11760 | ||
11761 | address = bl->address; | |
11762 | pspace_num = bl->pspace->num; | |
11763 | ||
11764 | /* This is only meaningful if the target is | |
11765 | evaluating conditions and if the user has | |
11766 | opted for condition evaluation on the target's | |
11767 | side. */ | |
11768 | if (gdb_evaluates_breakpoint_condition_p () | |
11769 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11770 | return; | |
11771 | ||
11772 | /* Flag all breakpoint locations with this address and | |
11773 | the same program space as the location | |
11774 | as "its condition has changed". We need to | |
11775 | update the conditions on the target's side. */ | |
11776 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11777 | { | |
11778 | loc = *loc2p; | |
11779 | ||
11780 | if (!is_breakpoint (loc->owner) | |
11781 | || pspace_num != loc->pspace->num) | |
11782 | continue; | |
11783 | ||
11784 | /* Flag the location appropriately. We use a different state to | |
11785 | let everyone know that we already updated the set of locations | |
11786 | with addr bl->address and program space bl->pspace. This is so | |
11787 | we don't have to keep calling these functions just to mark locations | |
11788 | that have already been marked. */ | |
11789 | loc->condition_changed = condition_updated; | |
11790 | ||
11791 | /* Free the agent expression bytecode as well. We will compute | |
11792 | it later on. */ | |
833177a4 | 11793 | loc->cond_bytecode.reset (); |
b775012e LM |
11794 | } |
11795 | } | |
44702360 PA |
11796 | /* Called whether new breakpoints are created, or existing breakpoints |
11797 | deleted, to update the global location list and recompute which | |
11798 | locations are duplicate of which. | |
b775012e | 11799 | |
04086b45 PA |
11800 | The INSERT_MODE flag determines whether locations may not, may, or |
11801 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11802 | info. */ | |
b60e7edf | 11803 | |
0d381245 | 11804 | static void |
44702360 | 11805 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11806 | { |
74960c60 | 11807 | struct breakpoint *b; |
876fa593 | 11808 | struct bp_location **locp, *loc; |
b775012e LM |
11809 | /* Last breakpoint location address that was marked for update. */ |
11810 | CORE_ADDR last_addr = 0; | |
11811 | /* Last breakpoint location program space that was marked for update. */ | |
11812 | int last_pspace_num = -1; | |
f7545552 | 11813 | |
2d134ed3 PA |
11814 | /* Used in the duplicates detection below. When iterating over all |
11815 | bp_locations, points to the first bp_location of a given address. | |
11816 | Breakpoints and watchpoints of different types are never | |
11817 | duplicates of each other. Keep one pointer for each type of | |
11818 | breakpoint/watchpoint, so we only need to loop over all locations | |
11819 | once. */ | |
11820 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11821 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11822 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11823 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11824 | |
f5336ca5 PA |
11825 | /* Saved former bp_locations array which we compare against the newly |
11826 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11827 | struct bp_location **old_locp; |
f5336ca5 | 11828 | unsigned old_locations_count; |
81b1e71c | 11829 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11830 | |
f5336ca5 PA |
11831 | old_locations_count = bp_locations_count; |
11832 | bp_locations = NULL; | |
11833 | bp_locations_count = 0; | |
0d381245 | 11834 | |
74960c60 | 11835 | ALL_BREAKPOINTS (b) |
876fa593 | 11836 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11837 | bp_locations_count++; |
876fa593 | 11838 | |
f5336ca5 PA |
11839 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11840 | locp = bp_locations; | |
876fa593 JK |
11841 | ALL_BREAKPOINTS (b) |
11842 | for (loc = b->loc; loc; loc = loc->next) | |
11843 | *locp++ = loc; | |
f5336ca5 PA |
11844 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11845 | bp_locations_compare); | |
876fa593 | 11846 | |
f5336ca5 | 11847 | bp_locations_target_extensions_update (); |
74960c60 | 11848 | |
4a64f543 MS |
11849 | /* Identify bp_location instances that are no longer present in the |
11850 | new list, and therefore should be freed. Note that it's not | |
11851 | necessary that those locations should be removed from inferior -- | |
11852 | if there's another location at the same address (previously | |
11853 | marked as duplicate), we don't need to remove/insert the | |
11854 | location. | |
876fa593 | 11855 | |
4a64f543 MS |
11856 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11857 | and former bp_location array state respectively. */ | |
876fa593 | 11858 | |
f5336ca5 | 11859 | locp = bp_locations; |
81b1e71c TT |
11860 | for (old_locp = old_locations.get (); |
11861 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11862 | old_locp++) |
74960c60 | 11863 | { |
876fa593 | 11864 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11865 | struct bp_location **loc2p; |
876fa593 | 11866 | |
e5dd4106 | 11867 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11868 | not, we have to free it. */ |
c7d46a38 | 11869 | int found_object = 0; |
20874c92 VP |
11870 | /* Tells if the location should remain inserted in the target. */ |
11871 | int keep_in_target = 0; | |
11872 | int removed = 0; | |
876fa593 | 11873 | |
4a64f543 MS |
11874 | /* Skip LOCP entries which will definitely never be needed. |
11875 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11876 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11877 | && (*locp)->address < old_loc->address) |
876fa593 | 11878 | locp++; |
c7d46a38 PA |
11879 | |
11880 | for (loc2p = locp; | |
f5336ca5 | 11881 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11882 | && (*loc2p)->address == old_loc->address); |
11883 | loc2p++) | |
11884 | { | |
b775012e LM |
11885 | /* Check if this is a new/duplicated location or a duplicated |
11886 | location that had its condition modified. If so, we want to send | |
11887 | its condition to the target if evaluation of conditions is taking | |
11888 | place there. */ | |
11889 | if ((*loc2p)->condition_changed == condition_modified | |
11890 | && (last_addr != old_loc->address | |
11891 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11892 | { |
b775012e LM |
11893 | force_breakpoint_reinsertion (*loc2p); |
11894 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11895 | } |
b775012e LM |
11896 | |
11897 | if (*loc2p == old_loc) | |
11898 | found_object = 1; | |
c7d46a38 | 11899 | } |
74960c60 | 11900 | |
b775012e LM |
11901 | /* We have already handled this address, update it so that we don't |
11902 | have to go through updates again. */ | |
11903 | last_addr = old_loc->address; | |
11904 | ||
11905 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11906 | if (!found_object) | |
11907 | force_breakpoint_reinsertion (old_loc); | |
11908 | ||
4a64f543 MS |
11909 | /* If this location is no longer present, and inserted, look if |
11910 | there's maybe a new location at the same address. If so, | |
11911 | mark that one inserted, and don't remove this one. This is | |
11912 | needed so that we don't have a time window where a breakpoint | |
11913 | at certain location is not inserted. */ | |
74960c60 | 11914 | |
876fa593 | 11915 | if (old_loc->inserted) |
0d381245 | 11916 | { |
4a64f543 MS |
11917 | /* If the location is inserted now, we might have to remove |
11918 | it. */ | |
74960c60 | 11919 | |
876fa593 | 11920 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11921 | { |
4a64f543 MS |
11922 | /* The location is still present in the location list, |
11923 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11924 | keep_in_target = 1; |
74960c60 VP |
11925 | } |
11926 | else | |
11927 | { | |
b775012e LM |
11928 | /* This location still exists, but it won't be kept in the |
11929 | target since it may have been disabled. We proceed to | |
11930 | remove its target-side condition. */ | |
11931 | ||
4a64f543 MS |
11932 | /* The location is either no longer present, or got |
11933 | disabled. See if there's another location at the | |
11934 | same address, in which case we don't need to remove | |
11935 | this one from the target. */ | |
876fa593 | 11936 | |
2bdf28a0 | 11937 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11938 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11939 | { | |
876fa593 | 11940 | for (loc2p = locp; |
f5336ca5 | 11941 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11942 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11943 | loc2p++) |
11944 | { | |
11945 | struct bp_location *loc2 = *loc2p; | |
11946 | ||
2d134ed3 | 11947 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11948 | { |
85d721b8 PA |
11949 | /* Read watchpoint locations are switched to |
11950 | access watchpoints, if the former are not | |
11951 | supported, but the latter are. */ | |
11952 | if (is_hardware_watchpoint (old_loc->owner)) | |
11953 | { | |
11954 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11955 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11956 | } | |
11957 | ||
934709f0 PW |
11958 | /* loc2 is a duplicated location. We need to check |
11959 | if it should be inserted in case it will be | |
11960 | unduplicated. */ | |
11961 | if (loc2 != old_loc | |
11962 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11963 | { |
934709f0 | 11964 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11965 | keep_in_target = 1; |
11966 | break; | |
11967 | } | |
876fa593 JK |
11968 | } |
11969 | } | |
11970 | } | |
74960c60 VP |
11971 | } |
11972 | ||
20874c92 VP |
11973 | if (!keep_in_target) |
11974 | { | |
834c0d03 | 11975 | if (remove_breakpoint (old_loc)) |
20874c92 | 11976 | { |
4a64f543 MS |
11977 | /* This is just about all we can do. We could keep |
11978 | this location on the global list, and try to | |
11979 | remove it next time, but there's no particular | |
11980 | reason why we will succeed next time. | |
20874c92 | 11981 | |
4a64f543 MS |
11982 | Note that at this point, old_loc->owner is still |
11983 | valid, as delete_breakpoint frees the breakpoint | |
11984 | only after calling us. */ | |
3e43a32a MS |
11985 | printf_filtered (_("warning: Error removing " |
11986 | "breakpoint %d\n"), | |
876fa593 | 11987 | old_loc->owner->number); |
20874c92 VP |
11988 | } |
11989 | removed = 1; | |
11990 | } | |
0d381245 | 11991 | } |
74960c60 VP |
11992 | |
11993 | if (!found_object) | |
1c5cfe86 | 11994 | { |
fbea99ea | 11995 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11996 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11997 | { |
db82e815 PA |
11998 | /* This location was removed from the target. In |
11999 | non-stop mode, a race condition is possible where | |
12000 | we've removed a breakpoint, but stop events for that | |
12001 | breakpoint are already queued and will arrive later. | |
12002 | We apply an heuristic to be able to distinguish such | |
12003 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12004 | breakpoint location for a bit, and will retire it | |
12005 | after we see some number of events. The theory here | |
12006 | is that reporting of events should, "on the average", | |
12007 | be fair, so after a while we'll see events from all | |
12008 | threads that have anything of interest, and no longer | |
12009 | need to keep this breakpoint location around. We | |
12010 | don't hold locations forever so to reduce chances of | |
12011 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12012 | SIGTRAP. | |
12013 | ||
12014 | The heuristic failing can be disastrous on | |
12015 | decr_pc_after_break targets. | |
12016 | ||
12017 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12018 | if we fail to recognize a late breakpoint SIGTRAP, | |
12019 | because events_till_retirement has reached 0 too | |
12020 | soon, we'll fail to do the PC adjustment, and report | |
12021 | a random SIGTRAP to the user. When the user resumes | |
12022 | the inferior, it will most likely immediately crash | |
2dec564e | 12023 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12024 | corrupted, because of being resumed e.g., in the |
12025 | middle of a multi-byte instruction, or skipped a | |
12026 | one-byte instruction. This was actually seen happen | |
12027 | on native x86-linux, and should be less rare on | |
12028 | targets that do not support new thread events, like | |
12029 | remote, due to the heuristic depending on | |
12030 | thread_count. | |
12031 | ||
12032 | Mistaking a random SIGTRAP for a breakpoint trap | |
12033 | causes similar symptoms (PC adjustment applied when | |
12034 | it shouldn't), but then again, playing with SIGTRAPs | |
12035 | behind the debugger's back is asking for trouble. | |
12036 | ||
12037 | Since hardware watchpoint traps are always | |
12038 | distinguishable from other traps, so we don't need to | |
12039 | apply keep hardware watchpoint moribund locations | |
12040 | around. We simply always ignore hardware watchpoint | |
12041 | traps we can no longer explain. */ | |
12042 | ||
876fa593 JK |
12043 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12044 | old_loc->owner = NULL; | |
20874c92 | 12045 | |
876fa593 | 12046 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12047 | } |
12048 | else | |
f431efe5 PA |
12049 | { |
12050 | old_loc->owner = NULL; | |
12051 | decref_bp_location (&old_loc); | |
12052 | } | |
20874c92 | 12053 | } |
74960c60 | 12054 | } |
1c5cfe86 | 12055 | |
348d480f PA |
12056 | /* Rescan breakpoints at the same address and section, marking the |
12057 | first one as "first" and any others as "duplicates". This is so | |
12058 | that the bpt instruction is only inserted once. If we have a | |
12059 | permanent breakpoint at the same place as BPT, make that one the | |
12060 | official one, and the rest as duplicates. Permanent breakpoints | |
12061 | are sorted first for the same address. | |
12062 | ||
12063 | Do the same for hardware watchpoints, but also considering the | |
12064 | watchpoint's type (regular/access/read) and length. */ | |
12065 | ||
12066 | bp_loc_first = NULL; | |
12067 | wp_loc_first = NULL; | |
12068 | awp_loc_first = NULL; | |
12069 | rwp_loc_first = NULL; | |
12070 | ALL_BP_LOCATIONS (loc, locp) | |
12071 | { | |
12072 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12073 | non-NULL. */ | |
348d480f | 12074 | struct bp_location **loc_first_p; |
d3fbdd86 | 12075 | b = loc->owner; |
348d480f | 12076 | |
6f380991 | 12077 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12078 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12079 | /* Don't detect duplicate for tracepoint locations because they are |
12080 | never duplicated. See the comments in field `duplicate' of | |
12081 | `struct bp_location'. */ | |
348d480f | 12082 | || is_tracepoint (b)) |
b775012e LM |
12083 | { |
12084 | /* Clear the condition modification flag. */ | |
12085 | loc->condition_changed = condition_unchanged; | |
12086 | continue; | |
12087 | } | |
348d480f | 12088 | |
348d480f PA |
12089 | if (b->type == bp_hardware_watchpoint) |
12090 | loc_first_p = &wp_loc_first; | |
12091 | else if (b->type == bp_read_watchpoint) | |
12092 | loc_first_p = &rwp_loc_first; | |
12093 | else if (b->type == bp_access_watchpoint) | |
12094 | loc_first_p = &awp_loc_first; | |
12095 | else | |
12096 | loc_first_p = &bp_loc_first; | |
12097 | ||
12098 | if (*loc_first_p == NULL | |
12099 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12100 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12101 | { | |
12102 | *loc_first_p = loc; | |
12103 | loc->duplicate = 0; | |
b775012e LM |
12104 | |
12105 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12106 | { | |
12107 | loc->needs_update = 1; | |
12108 | /* Clear the condition modification flag. */ | |
12109 | loc->condition_changed = condition_unchanged; | |
12110 | } | |
348d480f PA |
12111 | continue; |
12112 | } | |
12113 | ||
934709f0 PW |
12114 | |
12115 | /* This and the above ensure the invariant that the first location | |
12116 | is not duplicated, and is the inserted one. | |
12117 | All following are marked as duplicated, and are not inserted. */ | |
12118 | if (loc->inserted) | |
12119 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12120 | loc->duplicate = 1; |
12121 | ||
b775012e LM |
12122 | /* Clear the condition modification flag. */ |
12123 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12124 | } |
12125 | ||
a25a5a45 | 12126 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12127 | { |
04086b45 | 12128 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12129 | insert_breakpoint_locations (); |
12130 | else | |
12131 | { | |
44702360 PA |
12132 | /* Even though the caller told us to not insert new |
12133 | locations, we may still need to update conditions on the | |
12134 | target's side of breakpoints that were already inserted | |
12135 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12136 | only update conditions for locations that are marked |
12137 | "needs_update". */ | |
12138 | update_inserted_breakpoint_locations (); | |
12139 | } | |
12140 | } | |
348d480f | 12141 | |
04086b45 | 12142 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12143 | download_tracepoint_locations (); |
348d480f PA |
12144 | } |
12145 | ||
12146 | void | |
12147 | breakpoint_retire_moribund (void) | |
12148 | { | |
12149 | struct bp_location *loc; | |
12150 | int ix; | |
12151 | ||
12152 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12153 | if (--(loc->events_till_retirement) == 0) | |
12154 | { | |
12155 | decref_bp_location (&loc); | |
12156 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12157 | --ix; | |
12158 | } | |
12159 | } | |
12160 | ||
12161 | static void | |
44702360 | 12162 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12163 | { |
348d480f | 12164 | |
492d29ea PA |
12165 | TRY |
12166 | { | |
12167 | update_global_location_list (insert_mode); | |
12168 | } | |
12169 | CATCH (e, RETURN_MASK_ERROR) | |
12170 | { | |
12171 | } | |
12172 | END_CATCH | |
348d480f PA |
12173 | } |
12174 | ||
12175 | /* Clear BKP from a BPS. */ | |
12176 | ||
12177 | static void | |
12178 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12179 | { | |
12180 | bpstat bs; | |
12181 | ||
12182 | for (bs = bps; bs; bs = bs->next) | |
12183 | if (bs->breakpoint_at == bpt) | |
12184 | { | |
12185 | bs->breakpoint_at = NULL; | |
12186 | bs->old_val = NULL; | |
12187 | /* bs->commands will be freed later. */ | |
12188 | } | |
12189 | } | |
12190 | ||
12191 | /* Callback for iterate_over_threads. */ | |
12192 | static int | |
12193 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12194 | { | |
9a3c8263 | 12195 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12196 | |
12197 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12198 | return 0; | |
12199 | } | |
12200 | ||
12201 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12202 | callbacks. */ | |
12203 | ||
12204 | static void | |
12205 | say_where (struct breakpoint *b) | |
12206 | { | |
12207 | struct value_print_options opts; | |
12208 | ||
12209 | get_user_print_options (&opts); | |
12210 | ||
12211 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12212 | single string. */ | |
12213 | if (b->loc == NULL) | |
12214 | { | |
f00aae0f KS |
12215 | /* For pending locations, the output differs slightly based |
12216 | on b->extra_string. If this is non-NULL, it contains either | |
12217 | a condition or dprintf arguments. */ | |
12218 | if (b->extra_string == NULL) | |
12219 | { | |
12220 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12221 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12222 | } |
12223 | else if (b->type == bp_dprintf) | |
12224 | { | |
12225 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12226 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12227 | b->extra_string); |
12228 | } | |
12229 | else | |
12230 | { | |
12231 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12232 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12233 | b->extra_string); |
12234 | } | |
348d480f PA |
12235 | } |
12236 | else | |
12237 | { | |
2f202fde | 12238 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12239 | { |
12240 | printf_filtered (" at "); | |
12241 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12242 | gdb_stdout); | |
12243 | } | |
2f202fde | 12244 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12245 | { |
12246 | /* If there is a single location, we can print the location | |
12247 | more nicely. */ | |
12248 | if (b->loc->next == NULL) | |
12249 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12250 | symtab_to_filename_for_display (b->loc->symtab), |
12251 | b->loc->line_number); | |
f8eba3c6 TT |
12252 | else |
12253 | /* This is not ideal, but each location may have a | |
12254 | different file name, and this at least reflects the | |
12255 | real situation somewhat. */ | |
f00aae0f | 12256 | printf_filtered (": %s.", |
d28cd78a | 12257 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12258 | } |
348d480f PA |
12259 | |
12260 | if (b->loc->next) | |
12261 | { | |
12262 | struct bp_location *loc = b->loc; | |
12263 | int n = 0; | |
12264 | for (; loc; loc = loc->next) | |
12265 | ++n; | |
12266 | printf_filtered (" (%d locations)", n); | |
12267 | } | |
12268 | } | |
12269 | } | |
12270 | ||
348d480f PA |
12271 | /* Default bp_location_ops methods. */ |
12272 | ||
12273 | static void | |
12274 | bp_location_dtor (struct bp_location *self) | |
12275 | { | |
348d480f PA |
12276 | xfree (self->function_name); |
12277 | } | |
12278 | ||
12279 | static const struct bp_location_ops bp_location_ops = | |
12280 | { | |
12281 | bp_location_dtor | |
12282 | }; | |
12283 | ||
c1fc2657 | 12284 | /* Destructor for the breakpoint base class. */ |
348d480f | 12285 | |
c1fc2657 | 12286 | breakpoint::~breakpoint () |
348d480f | 12287 | { |
c1fc2657 SM |
12288 | xfree (this->cond_string); |
12289 | xfree (this->extra_string); | |
12290 | xfree (this->filter); | |
348d480f PA |
12291 | } |
12292 | ||
2060206e PA |
12293 | static struct bp_location * |
12294 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12295 | { |
5625a286 | 12296 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12297 | } |
12298 | ||
2060206e PA |
12299 | static void |
12300 | base_breakpoint_re_set (struct breakpoint *b) | |
12301 | { | |
12302 | /* Nothing to re-set. */ | |
12303 | } | |
12304 | ||
12305 | #define internal_error_pure_virtual_called() \ | |
12306 | gdb_assert_not_reached ("pure virtual function called") | |
12307 | ||
12308 | static int | |
12309 | base_breakpoint_insert_location (struct bp_location *bl) | |
12310 | { | |
12311 | internal_error_pure_virtual_called (); | |
12312 | } | |
12313 | ||
12314 | static int | |
73971819 PA |
12315 | base_breakpoint_remove_location (struct bp_location *bl, |
12316 | enum remove_bp_reason reason) | |
2060206e PA |
12317 | { |
12318 | internal_error_pure_virtual_called (); | |
12319 | } | |
12320 | ||
12321 | static int | |
12322 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12323 | const address_space *aspace, |
09ac7c10 TT |
12324 | CORE_ADDR bp_addr, |
12325 | const struct target_waitstatus *ws) | |
2060206e PA |
12326 | { |
12327 | internal_error_pure_virtual_called (); | |
12328 | } | |
12329 | ||
12330 | static void | |
12331 | base_breakpoint_check_status (bpstat bs) | |
12332 | { | |
12333 | /* Always stop. */ | |
12334 | } | |
12335 | ||
12336 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12337 | errors. */ | |
12338 | ||
12339 | static int | |
12340 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12341 | { | |
12342 | internal_error_pure_virtual_called (); | |
12343 | } | |
12344 | ||
12345 | /* A "resources_needed" breakpoint_ops method that just internal | |
12346 | errors. */ | |
12347 | ||
12348 | static int | |
12349 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12350 | { | |
12351 | internal_error_pure_virtual_called (); | |
12352 | } | |
12353 | ||
12354 | static enum print_stop_action | |
12355 | base_breakpoint_print_it (bpstat bs) | |
12356 | { | |
12357 | internal_error_pure_virtual_called (); | |
12358 | } | |
12359 | ||
12360 | static void | |
12361 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12362 | struct ui_out *uiout) | |
12363 | { | |
12364 | /* nothing */ | |
12365 | } | |
12366 | ||
12367 | static void | |
12368 | base_breakpoint_print_mention (struct breakpoint *b) | |
12369 | { | |
12370 | internal_error_pure_virtual_called (); | |
12371 | } | |
12372 | ||
12373 | static void | |
12374 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12375 | { | |
12376 | internal_error_pure_virtual_called (); | |
12377 | } | |
12378 | ||
983af33b | 12379 | static void |
f00aae0f KS |
12380 | base_breakpoint_create_sals_from_location |
12381 | (const struct event_location *location, | |
12382 | struct linespec_result *canonical, | |
12383 | enum bptype type_wanted) | |
983af33b SDJ |
12384 | { |
12385 | internal_error_pure_virtual_called (); | |
12386 | } | |
12387 | ||
12388 | static void | |
12389 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12390 | struct linespec_result *c, | |
e1e01040 PA |
12391 | gdb::unique_xmalloc_ptr<char> cond_string, |
12392 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12393 | enum bptype type_wanted, |
12394 | enum bpdisp disposition, | |
12395 | int thread, | |
12396 | int task, int ignore_count, | |
12397 | const struct breakpoint_ops *o, | |
12398 | int from_tty, int enabled, | |
44f238bb | 12399 | int internal, unsigned flags) |
983af33b SDJ |
12400 | { |
12401 | internal_error_pure_virtual_called (); | |
12402 | } | |
12403 | ||
6c5b2ebe | 12404 | static std::vector<symtab_and_line> |
f00aae0f KS |
12405 | base_breakpoint_decode_location (struct breakpoint *b, |
12406 | const struct event_location *location, | |
6c5b2ebe | 12407 | struct program_space *search_pspace) |
983af33b SDJ |
12408 | { |
12409 | internal_error_pure_virtual_called (); | |
12410 | } | |
12411 | ||
ab04a2af TT |
12412 | /* The default 'explains_signal' method. */ |
12413 | ||
47591c29 | 12414 | static int |
427cd150 | 12415 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12416 | { |
47591c29 | 12417 | return 1; |
ab04a2af TT |
12418 | } |
12419 | ||
9d6e6e84 HZ |
12420 | /* The default "after_condition_true" method. */ |
12421 | ||
12422 | static void | |
12423 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12424 | { | |
12425 | /* Nothing to do. */ | |
12426 | } | |
12427 | ||
ab04a2af | 12428 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12429 | { |
2060206e PA |
12430 | base_breakpoint_allocate_location, |
12431 | base_breakpoint_re_set, | |
12432 | base_breakpoint_insert_location, | |
12433 | base_breakpoint_remove_location, | |
12434 | base_breakpoint_breakpoint_hit, | |
12435 | base_breakpoint_check_status, | |
12436 | base_breakpoint_resources_needed, | |
12437 | base_breakpoint_works_in_software_mode, | |
12438 | base_breakpoint_print_it, | |
12439 | NULL, | |
12440 | base_breakpoint_print_one_detail, | |
12441 | base_breakpoint_print_mention, | |
983af33b | 12442 | base_breakpoint_print_recreate, |
5f700d83 | 12443 | base_breakpoint_create_sals_from_location, |
983af33b | 12444 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12445 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12446 | base_breakpoint_explains_signal, |
12447 | base_breakpoint_after_condition_true, | |
2060206e PA |
12448 | }; |
12449 | ||
12450 | /* Default breakpoint_ops methods. */ | |
12451 | ||
12452 | static void | |
348d480f PA |
12453 | bkpt_re_set (struct breakpoint *b) |
12454 | { | |
06edf0c0 | 12455 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12456 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12457 | { |
f00aae0f | 12458 | /* Anything without a location can't be re-set. */ |
348d480f | 12459 | delete_breakpoint (b); |
06edf0c0 | 12460 | return; |
348d480f | 12461 | } |
06edf0c0 PA |
12462 | |
12463 | breakpoint_re_set_default (b); | |
348d480f PA |
12464 | } |
12465 | ||
2060206e | 12466 | static int |
348d480f PA |
12467 | bkpt_insert_location (struct bp_location *bl) |
12468 | { | |
cd6c3b4f YQ |
12469 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12470 | ||
579c6ad9 | 12471 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12472 | bl->target_info.placed_address = addr; |
12473 | ||
348d480f | 12474 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12475 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12476 | else |
7c16b83e | 12477 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12478 | } |
12479 | ||
2060206e | 12480 | static int |
73971819 | 12481 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12482 | { |
12483 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12484 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12485 | else | |
73971819 | 12486 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12487 | } |
12488 | ||
2060206e | 12489 | static int |
348d480f | 12490 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12491 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12492 | const struct target_waitstatus *ws) |
348d480f | 12493 | { |
09ac7c10 | 12494 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12495 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12496 | return 0; |
12497 | ||
348d480f PA |
12498 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12499 | aspace, bp_addr)) | |
12500 | return 0; | |
12501 | ||
12502 | if (overlay_debugging /* unmapped overlay section */ | |
12503 | && section_is_overlay (bl->section) | |
12504 | && !section_is_mapped (bl->section)) | |
12505 | return 0; | |
12506 | ||
12507 | return 1; | |
12508 | } | |
12509 | ||
cd1608cc PA |
12510 | static int |
12511 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12512 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12513 | const struct target_waitstatus *ws) |
12514 | { | |
12515 | if (dprintf_style == dprintf_style_agent | |
12516 | && target_can_run_breakpoint_commands ()) | |
12517 | { | |
12518 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12519 | for this address it must be for a breakpoint that happens to | |
12520 | be set at the same address. */ | |
12521 | return 0; | |
12522 | } | |
12523 | ||
12524 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12525 | } | |
12526 | ||
2060206e | 12527 | static int |
348d480f PA |
12528 | bkpt_resources_needed (const struct bp_location *bl) |
12529 | { | |
12530 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12531 | ||
12532 | return 1; | |
12533 | } | |
12534 | ||
2060206e | 12535 | static enum print_stop_action |
348d480f PA |
12536 | bkpt_print_it (bpstat bs) |
12537 | { | |
348d480f PA |
12538 | struct breakpoint *b; |
12539 | const struct bp_location *bl; | |
001c8c33 | 12540 | int bp_temp; |
79a45e25 | 12541 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12542 | |
12543 | gdb_assert (bs->bp_location_at != NULL); | |
12544 | ||
12545 | bl = bs->bp_location_at; | |
12546 | b = bs->breakpoint_at; | |
12547 | ||
001c8c33 PA |
12548 | bp_temp = b->disposition == disp_del; |
12549 | if (bl->address != bl->requested_address) | |
12550 | breakpoint_adjustment_warning (bl->requested_address, | |
12551 | bl->address, | |
12552 | b->number, 1); | |
12553 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12554 | maybe_print_thread_hit_breakpoint (uiout); |
12555 | ||
001c8c33 | 12556 | if (bp_temp) |
112e8700 | 12557 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12558 | else |
112e8700 SM |
12559 | uiout->text ("Breakpoint "); |
12560 | if (uiout->is_mi_like_p ()) | |
348d480f | 12561 | { |
112e8700 | 12562 | uiout->field_string ("reason", |
001c8c33 | 12563 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12564 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12565 | } |
112e8700 SM |
12566 | uiout->field_int ("bkptno", b->number); |
12567 | uiout->text (", "); | |
06edf0c0 | 12568 | |
001c8c33 | 12569 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12570 | } |
12571 | ||
2060206e | 12572 | static void |
06edf0c0 PA |
12573 | bkpt_print_mention (struct breakpoint *b) |
12574 | { | |
112e8700 | 12575 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12576 | return; |
12577 | ||
12578 | switch (b->type) | |
12579 | { | |
12580 | case bp_breakpoint: | |
12581 | case bp_gnu_ifunc_resolver: | |
12582 | if (b->disposition == disp_del) | |
12583 | printf_filtered (_("Temporary breakpoint")); | |
12584 | else | |
12585 | printf_filtered (_("Breakpoint")); | |
12586 | printf_filtered (_(" %d"), b->number); | |
12587 | if (b->type == bp_gnu_ifunc_resolver) | |
12588 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12589 | break; | |
12590 | case bp_hardware_breakpoint: | |
12591 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12592 | break; | |
e7e0cddf SS |
12593 | case bp_dprintf: |
12594 | printf_filtered (_("Dprintf %d"), b->number); | |
12595 | break; | |
06edf0c0 PA |
12596 | } |
12597 | ||
12598 | say_where (b); | |
12599 | } | |
12600 | ||
2060206e | 12601 | static void |
06edf0c0 PA |
12602 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12603 | { | |
12604 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12605 | fprintf_unfiltered (fp, "tbreak"); | |
12606 | else if (tp->type == bp_breakpoint) | |
12607 | fprintf_unfiltered (fp, "break"); | |
12608 | else if (tp->type == bp_hardware_breakpoint | |
12609 | && tp->disposition == disp_del) | |
12610 | fprintf_unfiltered (fp, "thbreak"); | |
12611 | else if (tp->type == bp_hardware_breakpoint) | |
12612 | fprintf_unfiltered (fp, "hbreak"); | |
12613 | else | |
12614 | internal_error (__FILE__, __LINE__, | |
12615 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12616 | ||
f00aae0f | 12617 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12618 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12619 | |
12620 | /* Print out extra_string if this breakpoint is pending. It might | |
12621 | contain, for example, conditions that were set by the user. */ | |
12622 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12623 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12624 | ||
dd11a36c | 12625 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12626 | } |
12627 | ||
983af33b | 12628 | static void |
f00aae0f KS |
12629 | bkpt_create_sals_from_location (const struct event_location *location, |
12630 | struct linespec_result *canonical, | |
12631 | enum bptype type_wanted) | |
983af33b | 12632 | { |
f00aae0f | 12633 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12634 | } |
12635 | ||
12636 | static void | |
12637 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12638 | struct linespec_result *canonical, | |
e1e01040 PA |
12639 | gdb::unique_xmalloc_ptr<char> cond_string, |
12640 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12641 | enum bptype type_wanted, |
12642 | enum bpdisp disposition, | |
12643 | int thread, | |
12644 | int task, int ignore_count, | |
12645 | const struct breakpoint_ops *ops, | |
12646 | int from_tty, int enabled, | |
44f238bb | 12647 | int internal, unsigned flags) |
983af33b | 12648 | { |
023fa29b | 12649 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12650 | std::move (cond_string), |
12651 | std::move (extra_string), | |
e7e0cddf | 12652 | type_wanted, |
983af33b SDJ |
12653 | disposition, thread, task, |
12654 | ignore_count, ops, from_tty, | |
44f238bb | 12655 | enabled, internal, flags); |
983af33b SDJ |
12656 | } |
12657 | ||
6c5b2ebe | 12658 | static std::vector<symtab_and_line> |
f00aae0f KS |
12659 | bkpt_decode_location (struct breakpoint *b, |
12660 | const struct event_location *location, | |
6c5b2ebe | 12661 | struct program_space *search_pspace) |
983af33b | 12662 | { |
6c5b2ebe | 12663 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12664 | } |
12665 | ||
06edf0c0 PA |
12666 | /* Virtual table for internal breakpoints. */ |
12667 | ||
12668 | static void | |
12669 | internal_bkpt_re_set (struct breakpoint *b) | |
12670 | { | |
12671 | switch (b->type) | |
12672 | { | |
12673 | /* Delete overlay event and longjmp master breakpoints; they | |
12674 | will be reset later by breakpoint_re_set. */ | |
12675 | case bp_overlay_event: | |
12676 | case bp_longjmp_master: | |
12677 | case bp_std_terminate_master: | |
12678 | case bp_exception_master: | |
12679 | delete_breakpoint (b); | |
12680 | break; | |
12681 | ||
12682 | /* This breakpoint is special, it's set up when the inferior | |
12683 | starts and we really don't want to touch it. */ | |
12684 | case bp_shlib_event: | |
12685 | ||
12686 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12687 | it is set up, we do not want to touch it. */ | |
12688 | case bp_thread_event: | |
12689 | break; | |
12690 | } | |
12691 | } | |
12692 | ||
12693 | static void | |
12694 | internal_bkpt_check_status (bpstat bs) | |
12695 | { | |
a9b3a50f PA |
12696 | if (bs->breakpoint_at->type == bp_shlib_event) |
12697 | { | |
12698 | /* If requested, stop when the dynamic linker notifies GDB of | |
12699 | events. This allows the user to get control and place | |
12700 | breakpoints in initializer routines for dynamically loaded | |
12701 | objects (among other things). */ | |
12702 | bs->stop = stop_on_solib_events; | |
12703 | bs->print = stop_on_solib_events; | |
12704 | } | |
12705 | else | |
12706 | bs->stop = 0; | |
06edf0c0 PA |
12707 | } |
12708 | ||
12709 | static enum print_stop_action | |
12710 | internal_bkpt_print_it (bpstat bs) | |
12711 | { | |
06edf0c0 | 12712 | struct breakpoint *b; |
06edf0c0 | 12713 | |
06edf0c0 PA |
12714 | b = bs->breakpoint_at; |
12715 | ||
06edf0c0 PA |
12716 | switch (b->type) |
12717 | { | |
348d480f PA |
12718 | case bp_shlib_event: |
12719 | /* Did we stop because the user set the stop_on_solib_events | |
12720 | variable? (If so, we report this as a generic, "Stopped due | |
12721 | to shlib event" message.) */ | |
edcc5120 | 12722 | print_solib_event (0); |
348d480f PA |
12723 | break; |
12724 | ||
12725 | case bp_thread_event: | |
12726 | /* Not sure how we will get here. | |
12727 | GDB should not stop for these breakpoints. */ | |
12728 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12729 | break; |
12730 | ||
12731 | case bp_overlay_event: | |
12732 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12733 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12734 | break; |
12735 | ||
12736 | case bp_longjmp_master: | |
12737 | /* These should never be enabled. */ | |
12738 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12739 | break; |
12740 | ||
12741 | case bp_std_terminate_master: | |
12742 | /* These should never be enabled. */ | |
12743 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12744 | "gdb should not stop!\n")); | |
348d480f PA |
12745 | break; |
12746 | ||
12747 | case bp_exception_master: | |
12748 | /* These should never be enabled. */ | |
12749 | printf_filtered (_("Exception Master Breakpoint: " | |
12750 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12751 | break; |
12752 | } | |
12753 | ||
001c8c33 | 12754 | return PRINT_NOTHING; |
06edf0c0 PA |
12755 | } |
12756 | ||
12757 | static void | |
12758 | internal_bkpt_print_mention (struct breakpoint *b) | |
12759 | { | |
12760 | /* Nothing to mention. These breakpoints are internal. */ | |
12761 | } | |
12762 | ||
06edf0c0 PA |
12763 | /* Virtual table for momentary breakpoints */ |
12764 | ||
12765 | static void | |
12766 | momentary_bkpt_re_set (struct breakpoint *b) | |
12767 | { | |
12768 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12769 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12770 | Otherwise these should have been blown away via the cleanup chain |
12771 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12772 | } | |
12773 | ||
12774 | static void | |
12775 | momentary_bkpt_check_status (bpstat bs) | |
12776 | { | |
12777 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12778 | } | |
12779 | ||
12780 | static enum print_stop_action | |
12781 | momentary_bkpt_print_it (bpstat bs) | |
12782 | { | |
001c8c33 | 12783 | return PRINT_UNKNOWN; |
348d480f PA |
12784 | } |
12785 | ||
06edf0c0 PA |
12786 | static void |
12787 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12788 | { |
06edf0c0 | 12789 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12790 | } |
12791 | ||
e2e4d78b JK |
12792 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12793 | ||
12794 | It gets cleared already on the removal of the first one of such placed | |
12795 | breakpoints. This is OK as they get all removed altogether. */ | |
12796 | ||
c1fc2657 | 12797 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12798 | { |
c1fc2657 | 12799 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12800 | |
c1fc2657 | 12801 | if (tp != NULL) |
e2e4d78b | 12802 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12803 | } |
12804 | ||
55aa24fb SDJ |
12805 | /* Specific methods for probe breakpoints. */ |
12806 | ||
12807 | static int | |
12808 | bkpt_probe_insert_location (struct bp_location *bl) | |
12809 | { | |
12810 | int v = bkpt_insert_location (bl); | |
12811 | ||
12812 | if (v == 0) | |
12813 | { | |
12814 | /* The insertion was successful, now let's set the probe's semaphore | |
12815 | if needed. */ | |
935676c9 | 12816 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12817 | } |
12818 | ||
12819 | return v; | |
12820 | } | |
12821 | ||
12822 | static int | |
73971819 PA |
12823 | bkpt_probe_remove_location (struct bp_location *bl, |
12824 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12825 | { |
12826 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12827 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12828 | |
73971819 | 12829 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12830 | } |
12831 | ||
12832 | static void | |
f00aae0f | 12833 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12834 | struct linespec_result *canonical, |
f00aae0f | 12835 | enum bptype type_wanted) |
55aa24fb SDJ |
12836 | { |
12837 | struct linespec_sals lsal; | |
12838 | ||
c2f4122d | 12839 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12840 | lsal.canonical |
12841 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12842 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12843 | } |
12844 | ||
6c5b2ebe | 12845 | static std::vector<symtab_and_line> |
f00aae0f KS |
12846 | bkpt_probe_decode_location (struct breakpoint *b, |
12847 | const struct event_location *location, | |
6c5b2ebe | 12848 | struct program_space *search_pspace) |
55aa24fb | 12849 | { |
6c5b2ebe PA |
12850 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12851 | if (sals.empty ()) | |
55aa24fb | 12852 | error (_("probe not found")); |
6c5b2ebe | 12853 | return sals; |
55aa24fb SDJ |
12854 | } |
12855 | ||
348d480f | 12856 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12857 | |
348d480f PA |
12858 | static void |
12859 | tracepoint_re_set (struct breakpoint *b) | |
12860 | { | |
12861 | breakpoint_re_set_default (b); | |
12862 | } | |
876fa593 | 12863 | |
348d480f PA |
12864 | static int |
12865 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12866 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12867 | const struct target_waitstatus *ws) |
348d480f PA |
12868 | { |
12869 | /* By definition, the inferior does not report stops at | |
12870 | tracepoints. */ | |
12871 | return 0; | |
74960c60 VP |
12872 | } |
12873 | ||
12874 | static void | |
348d480f PA |
12875 | tracepoint_print_one_detail (const struct breakpoint *self, |
12876 | struct ui_out *uiout) | |
74960c60 | 12877 | { |
d9b3f62e | 12878 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12879 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12880 | { |
12881 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12882 | |
112e8700 SM |
12883 | uiout->text ("\tmarker id is "); |
12884 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12885 | tp->static_trace_marker_id); |
112e8700 | 12886 | uiout->text ("\n"); |
348d480f | 12887 | } |
0d381245 VP |
12888 | } |
12889 | ||
a474d7c2 | 12890 | static void |
348d480f | 12891 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12892 | { |
112e8700 | 12893 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12894 | return; |
cc59ec59 | 12895 | |
348d480f PA |
12896 | switch (b->type) |
12897 | { | |
12898 | case bp_tracepoint: | |
12899 | printf_filtered (_("Tracepoint")); | |
12900 | printf_filtered (_(" %d"), b->number); | |
12901 | break; | |
12902 | case bp_fast_tracepoint: | |
12903 | printf_filtered (_("Fast tracepoint")); | |
12904 | printf_filtered (_(" %d"), b->number); | |
12905 | break; | |
12906 | case bp_static_tracepoint: | |
12907 | printf_filtered (_("Static tracepoint")); | |
12908 | printf_filtered (_(" %d"), b->number); | |
12909 | break; | |
12910 | default: | |
12911 | internal_error (__FILE__, __LINE__, | |
12912 | _("unhandled tracepoint type %d"), (int) b->type); | |
12913 | } | |
12914 | ||
12915 | say_where (b); | |
a474d7c2 PA |
12916 | } |
12917 | ||
348d480f | 12918 | static void |
d9b3f62e | 12919 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12920 | { |
d9b3f62e PA |
12921 | struct tracepoint *tp = (struct tracepoint *) self; |
12922 | ||
12923 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12924 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12925 | else if (self->type == bp_static_tracepoint) |
348d480f | 12926 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12927 | else if (self->type == bp_tracepoint) |
348d480f PA |
12928 | fprintf_unfiltered (fp, "trace"); |
12929 | else | |
12930 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12931 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12932 | |
f00aae0f | 12933 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12934 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12935 | print_recreate_thread (self, fp); |
12936 | ||
12937 | if (tp->pass_count) | |
12938 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12939 | } |
12940 | ||
983af33b | 12941 | static void |
f00aae0f KS |
12942 | tracepoint_create_sals_from_location (const struct event_location *location, |
12943 | struct linespec_result *canonical, | |
12944 | enum bptype type_wanted) | |
983af33b | 12945 | { |
f00aae0f | 12946 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12947 | } |
12948 | ||
12949 | static void | |
12950 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12951 | struct linespec_result *canonical, | |
e1e01040 PA |
12952 | gdb::unique_xmalloc_ptr<char> cond_string, |
12953 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12954 | enum bptype type_wanted, |
12955 | enum bpdisp disposition, | |
12956 | int thread, | |
12957 | int task, int ignore_count, | |
12958 | const struct breakpoint_ops *ops, | |
12959 | int from_tty, int enabled, | |
44f238bb | 12960 | int internal, unsigned flags) |
983af33b | 12961 | { |
023fa29b | 12962 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12963 | std::move (cond_string), |
12964 | std::move (extra_string), | |
e7e0cddf | 12965 | type_wanted, |
983af33b SDJ |
12966 | disposition, thread, task, |
12967 | ignore_count, ops, from_tty, | |
44f238bb | 12968 | enabled, internal, flags); |
983af33b SDJ |
12969 | } |
12970 | ||
6c5b2ebe | 12971 | static std::vector<symtab_and_line> |
f00aae0f KS |
12972 | tracepoint_decode_location (struct breakpoint *b, |
12973 | const struct event_location *location, | |
6c5b2ebe | 12974 | struct program_space *search_pspace) |
983af33b | 12975 | { |
6c5b2ebe | 12976 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12977 | } |
12978 | ||
2060206e | 12979 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12980 | |
55aa24fb SDJ |
12981 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12982 | static probe. */ | |
12983 | ||
12984 | static void | |
f00aae0f KS |
12985 | tracepoint_probe_create_sals_from_location |
12986 | (const struct event_location *location, | |
12987 | struct linespec_result *canonical, | |
12988 | enum bptype type_wanted) | |
55aa24fb SDJ |
12989 | { |
12990 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12991 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12992 | } |
12993 | ||
6c5b2ebe | 12994 | static std::vector<symtab_and_line> |
f00aae0f KS |
12995 | tracepoint_probe_decode_location (struct breakpoint *b, |
12996 | const struct event_location *location, | |
6c5b2ebe | 12997 | struct program_space *search_pspace) |
55aa24fb SDJ |
12998 | { |
12999 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13000 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13001 | } |
13002 | ||
13003 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13004 | ||
5c2b4418 HZ |
13005 | /* Dprintf breakpoint_ops methods. */ |
13006 | ||
13007 | static void | |
13008 | dprintf_re_set (struct breakpoint *b) | |
13009 | { | |
13010 | breakpoint_re_set_default (b); | |
13011 | ||
f00aae0f KS |
13012 | /* extra_string should never be non-NULL for dprintf. */ |
13013 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13014 | |
13015 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13016 | 2 - create a dprintf, which resolves fine. | |
13017 | 3 - disconnect from target 1 | |
13018 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13019 | ||
13020 | After steps #3/#4, you'll want the dprintf command list to | |
13021 | be updated, because target 1 and 2 may well return different | |
13022 | answers for target_can_run_breakpoint_commands(). | |
13023 | Given absence of finer grained resetting, we get to do | |
13024 | it all the time. */ | |
13025 | if (b->extra_string != NULL) | |
13026 | update_dprintf_command_list (b); | |
13027 | } | |
13028 | ||
2d9442cc HZ |
13029 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13030 | ||
13031 | static void | |
13032 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13033 | { | |
f00aae0f | 13034 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13035 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13036 | tp->extra_string); |
13037 | print_recreate_thread (tp, fp); | |
13038 | } | |
13039 | ||
9d6e6e84 HZ |
13040 | /* Implement the "after_condition_true" breakpoint_ops method for |
13041 | dprintf. | |
13042 | ||
13043 | dprintf's are implemented with regular commands in their command | |
13044 | list, but we run the commands here instead of before presenting the | |
13045 | stop to the user, as dprintf's don't actually cause a stop. This | |
13046 | also makes it so that the commands of multiple dprintfs at the same | |
13047 | address are all handled. */ | |
13048 | ||
13049 | static void | |
13050 | dprintf_after_condition_true (struct bpstats *bs) | |
13051 | { | |
04afa70c | 13052 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13053 | struct bpstats *tmp_bs_p = &tmp_bs; |
13054 | ||
13055 | /* dprintf's never cause a stop. This wasn't set in the | |
13056 | check_status hook instead because that would make the dprintf's | |
13057 | condition not be evaluated. */ | |
13058 | bs->stop = 0; | |
13059 | ||
13060 | /* Run the command list here. Take ownership of it instead of | |
13061 | copying. We never want these commands to run later in | |
13062 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13063 | be set at same address as this dprintf, or even if running the | |
13064 | commands here throws. */ | |
13065 | tmp_bs.commands = bs->commands; | |
13066 | bs->commands = NULL; | |
9d6e6e84 HZ |
13067 | |
13068 | bpstat_do_actions_1 (&tmp_bs_p); | |
13069 | ||
13070 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13071 | bpstat_do_actions_1 may return early without processing the whole | |
13072 | list. */ | |
9d6e6e84 HZ |
13073 | } |
13074 | ||
983af33b SDJ |
13075 | /* The breakpoint_ops structure to be used on static tracepoints with |
13076 | markers (`-m'). */ | |
13077 | ||
13078 | static void | |
f00aae0f | 13079 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13080 | struct linespec_result *canonical, |
f00aae0f | 13081 | enum bptype type_wanted) |
983af33b SDJ |
13082 | { |
13083 | struct linespec_sals lsal; | |
f00aae0f | 13084 | const char *arg_start, *arg; |
983af33b | 13085 | |
a20714ff | 13086 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13087 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13088 | |
f2fc3015 TT |
13089 | std::string str (arg_start, arg - arg_start); |
13090 | const char *ptr = str.c_str (); | |
a20714ff PA |
13091 | canonical->location |
13092 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13093 | |
8e9e35b1 TT |
13094 | lsal.canonical |
13095 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13096 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13097 | } |
13098 | ||
13099 | static void | |
13100 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13101 | struct linespec_result *canonical, | |
e1e01040 PA |
13102 | gdb::unique_xmalloc_ptr<char> cond_string, |
13103 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13104 | enum bptype type_wanted, |
13105 | enum bpdisp disposition, | |
13106 | int thread, | |
13107 | int task, int ignore_count, | |
13108 | const struct breakpoint_ops *ops, | |
13109 | int from_tty, int enabled, | |
44f238bb | 13110 | int internal, unsigned flags) |
983af33b | 13111 | { |
6c5b2ebe | 13112 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13113 | |
13114 | /* If the user is creating a static tracepoint by marker id | |
13115 | (strace -m MARKER_ID), then store the sals index, so that | |
13116 | breakpoint_re_set can try to match up which of the newly | |
13117 | found markers corresponds to this one, and, don't try to | |
13118 | expand multiple locations for each sal, given than SALS | |
13119 | already should contain all sals for MARKER_ID. */ | |
13120 | ||
6c5b2ebe | 13121 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13122 | { |
6c5b2ebe PA |
13123 | event_location_up location |
13124 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13125 | |
b270e6f9 | 13126 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13127 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13128 | std::move (location), NULL, |
e1e01040 PA |
13129 | std::move (cond_string), |
13130 | std::move (extra_string), | |
e7e0cddf | 13131 | type_wanted, disposition, |
983af33b | 13132 | thread, task, ignore_count, ops, |
44f238bb | 13133 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13134 | canonical->special_display); |
13135 | /* Given that its possible to have multiple markers with | |
13136 | the same string id, if the user is creating a static | |
13137 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13138 | store the sals index, so that breakpoint_re_set can | |
13139 | try to match up which of the newly found markers | |
13140 | corresponds to this one */ | |
13141 | tp->static_trace_marker_id_idx = i; | |
13142 | ||
b270e6f9 | 13143 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13144 | } |
13145 | } | |
13146 | ||
6c5b2ebe | 13147 | static std::vector<symtab_and_line> |
f00aae0f KS |
13148 | strace_marker_decode_location (struct breakpoint *b, |
13149 | const struct event_location *location, | |
6c5b2ebe | 13150 | struct program_space *search_pspace) |
983af33b SDJ |
13151 | { |
13152 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13153 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13154 | |
6c5b2ebe PA |
13155 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13156 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13157 | { |
6c5b2ebe PA |
13158 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13159 | sals.resize (1); | |
13160 | return sals; | |
983af33b SDJ |
13161 | } |
13162 | else | |
5d9310c4 | 13163 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13164 | } |
13165 | ||
13166 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13167 | ||
13168 | static int | |
13169 | strace_marker_p (struct breakpoint *b) | |
13170 | { | |
13171 | return b->ops == &strace_marker_breakpoint_ops; | |
13172 | } | |
13173 | ||
53a5351d | 13174 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13175 | structures. */ |
c906108c SS |
13176 | |
13177 | void | |
fba45db2 | 13178 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13179 | { |
52f0bd74 | 13180 | struct breakpoint *b; |
c906108c | 13181 | |
8a3fe4f8 | 13182 | gdb_assert (bpt != NULL); |
c906108c | 13183 | |
4a64f543 MS |
13184 | /* Has this bp already been deleted? This can happen because |
13185 | multiple lists can hold pointers to bp's. bpstat lists are | |
13186 | especial culprits. | |
13187 | ||
13188 | One example of this happening is a watchpoint's scope bp. When | |
13189 | the scope bp triggers, we notice that the watchpoint is out of | |
13190 | scope, and delete it. We also delete its scope bp. But the | |
13191 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13192 | That bpstat is then checked for auto-deleting bp's, which are | |
13193 | deleted. | |
13194 | ||
13195 | A real solution to this problem might involve reference counts in | |
13196 | bp's, and/or giving them pointers back to their referencing | |
13197 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13198 | storage when no more references were extent. A cheaper bandaid | |
13199 | was chosen. */ | |
c906108c SS |
13200 | if (bpt->type == bp_none) |
13201 | return; | |
13202 | ||
4a64f543 MS |
13203 | /* At least avoid this stale reference until the reference counting |
13204 | of breakpoints gets resolved. */ | |
d0fb5eae | 13205 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13206 | { |
d0fb5eae | 13207 | struct breakpoint *related; |
3a5c3e22 | 13208 | struct watchpoint *w; |
d0fb5eae JK |
13209 | |
13210 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13211 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13212 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13213 | w = (struct watchpoint *) bpt; |
13214 | else | |
13215 | w = NULL; | |
13216 | if (w != NULL) | |
13217 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13218 | |
13219 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13220 | for (related = bpt; related->related_breakpoint != bpt; | |
13221 | related = related->related_breakpoint); | |
13222 | related->related_breakpoint = bpt->related_breakpoint; | |
13223 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13224 | } |
13225 | ||
a9634178 TJB |
13226 | /* watch_command_1 creates a watchpoint but only sets its number if |
13227 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13228 | a problem in that process, we'll be asked to delete the half-created | |
13229 | watchpoint. In that case, don't announce the deletion. */ | |
13230 | if (bpt->number) | |
76727919 | 13231 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13232 | |
c906108c SS |
13233 | if (breakpoint_chain == bpt) |
13234 | breakpoint_chain = bpt->next; | |
13235 | ||
c906108c SS |
13236 | ALL_BREAKPOINTS (b) |
13237 | if (b->next == bpt) | |
c5aa993b JM |
13238 | { |
13239 | b->next = bpt->next; | |
13240 | break; | |
13241 | } | |
c906108c | 13242 | |
f431efe5 PA |
13243 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13244 | been freed. */ | |
13245 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13246 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13247 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13248 | commands are associated with the bpstat; if we remove it here, | |
13249 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13250 | event-top.c won't do anything, and temporary breakpoints with | |
13251 | commands won't work. */ | |
13252 | ||
13253 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13254 | ||
4a64f543 MS |
13255 | /* Now that breakpoint is removed from breakpoint list, update the |
13256 | global location list. This will remove locations that used to | |
13257 | belong to this breakpoint. Do this before freeing the breakpoint | |
13258 | itself, since remove_breakpoint looks at location's owner. It | |
13259 | might be better design to have location completely | |
13260 | self-contained, but it's not the case now. */ | |
44702360 | 13261 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13262 | |
4a64f543 MS |
13263 | /* On the chance that someone will soon try again to delete this |
13264 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13265 | bpt->type = bp_none; |
4d01a485 | 13266 | delete bpt; |
c906108c SS |
13267 | } |
13268 | ||
51be5b68 PA |
13269 | /* Iterator function to call a user-provided callback function once |
13270 | for each of B and its related breakpoints. */ | |
13271 | ||
13272 | static void | |
13273 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13274 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13275 | { |
13276 | struct breakpoint *related; | |
13277 | ||
13278 | related = b; | |
13279 | do | |
13280 | { | |
13281 | struct breakpoint *next; | |
13282 | ||
13283 | /* FUNCTION may delete RELATED. */ | |
13284 | next = related->related_breakpoint; | |
13285 | ||
13286 | if (next == related) | |
13287 | { | |
13288 | /* RELATED is the last ring entry. */ | |
48649e1b | 13289 | function (related); |
51be5b68 PA |
13290 | |
13291 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13292 | B. There's nothing left to do anyway, so just break | |
13293 | out. */ | |
13294 | break; | |
13295 | } | |
13296 | else | |
48649e1b | 13297 | function (related); |
51be5b68 PA |
13298 | |
13299 | related = next; | |
13300 | } | |
13301 | while (related != b); | |
13302 | } | |
95a42b64 | 13303 | |
4495129a | 13304 | static void |
981a3fb3 | 13305 | delete_command (const char *arg, int from_tty) |
c906108c | 13306 | { |
35df4500 | 13307 | struct breakpoint *b, *b_tmp; |
c906108c | 13308 | |
ea9365bb TT |
13309 | dont_repeat (); |
13310 | ||
c906108c SS |
13311 | if (arg == 0) |
13312 | { | |
13313 | int breaks_to_delete = 0; | |
13314 | ||
46c6471b PA |
13315 | /* Delete all breakpoints if no argument. Do not delete |
13316 | internal breakpoints, these have to be deleted with an | |
13317 | explicit breakpoint number argument. */ | |
c5aa993b | 13318 | ALL_BREAKPOINTS (b) |
46c6471b | 13319 | if (user_breakpoint_p (b)) |
973d738b DJ |
13320 | { |
13321 | breaks_to_delete = 1; | |
13322 | break; | |
13323 | } | |
c906108c SS |
13324 | |
13325 | /* Ask user only if there are some breakpoints to delete. */ | |
13326 | if (!from_tty | |
e2e0b3e5 | 13327 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13328 | { |
35df4500 | 13329 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13330 | if (user_breakpoint_p (b)) |
c5aa993b | 13331 | delete_breakpoint (b); |
c906108c SS |
13332 | } |
13333 | } | |
13334 | else | |
48649e1b TT |
13335 | map_breakpoint_numbers |
13336 | (arg, [&] (breakpoint *b) | |
13337 | { | |
13338 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13339 | }); | |
c906108c SS |
13340 | } |
13341 | ||
c2f4122d PA |
13342 | /* Return true if all locations of B bound to PSPACE are pending. If |
13343 | PSPACE is NULL, all locations of all program spaces are | |
13344 | considered. */ | |
13345 | ||
0d381245 | 13346 | static int |
c2f4122d | 13347 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13348 | { |
c2f4122d PA |
13349 | struct bp_location *loc; |
13350 | ||
13351 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13352 | if ((pspace == NULL | |
13353 | || loc->pspace == pspace) | |
13354 | && !loc->shlib_disabled | |
8645ff69 | 13355 | && !loc->pspace->executing_startup) |
0d381245 VP |
13356 | return 0; |
13357 | return 1; | |
fe3f5fa8 VP |
13358 | } |
13359 | ||
776592bf DE |
13360 | /* Subroutine of update_breakpoint_locations to simplify it. |
13361 | Return non-zero if multiple fns in list LOC have the same name. | |
13362 | Null names are ignored. */ | |
13363 | ||
13364 | static int | |
13365 | ambiguous_names_p (struct bp_location *loc) | |
13366 | { | |
13367 | struct bp_location *l; | |
459a2e4c TT |
13368 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13369 | xcalloc, xfree); | |
776592bf DE |
13370 | |
13371 | for (l = loc; l != NULL; l = l->next) | |
13372 | { | |
13373 | const char **slot; | |
13374 | const char *name = l->function_name; | |
13375 | ||
13376 | /* Allow for some names to be NULL, ignore them. */ | |
13377 | if (name == NULL) | |
13378 | continue; | |
13379 | ||
13380 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13381 | INSERT); | |
4a64f543 MS |
13382 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13383 | returns NULL. */ | |
776592bf DE |
13384 | if (*slot != NULL) |
13385 | { | |
13386 | htab_delete (htab); | |
13387 | return 1; | |
13388 | } | |
13389 | *slot = name; | |
13390 | } | |
13391 | ||
13392 | htab_delete (htab); | |
13393 | return 0; | |
13394 | } | |
13395 | ||
0fb4aa4b PA |
13396 | /* When symbols change, it probably means the sources changed as well, |
13397 | and it might mean the static tracepoint markers are no longer at | |
13398 | the same address or line numbers they used to be at last we | |
13399 | checked. Losing your static tracepoints whenever you rebuild is | |
13400 | undesirable. This function tries to resync/rematch gdb static | |
13401 | tracepoints with the markers on the target, for static tracepoints | |
13402 | that have not been set by marker id. Static tracepoint that have | |
13403 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13404 | The heuristic is: | |
13405 | ||
13406 | 1) For a tracepoint set at a specific address, look for a marker at | |
13407 | the old PC. If one is found there, assume to be the same marker. | |
13408 | If the name / string id of the marker found is different from the | |
13409 | previous known name, assume that means the user renamed the marker | |
13410 | in the sources, and output a warning. | |
13411 | ||
13412 | 2) For a tracepoint set at a given line number, look for a marker | |
13413 | at the new address of the old line number. If one is found there, | |
13414 | assume to be the same marker. If the name / string id of the | |
13415 | marker found is different from the previous known name, assume that | |
13416 | means the user renamed the marker in the sources, and output a | |
13417 | warning. | |
13418 | ||
13419 | 3) If a marker is no longer found at the same address or line, it | |
13420 | may mean the marker no longer exists. But it may also just mean | |
13421 | the code changed a bit. Maybe the user added a few lines of code | |
13422 | that made the marker move up or down (in line number terms). Ask | |
13423 | the target for info about the marker with the string id as we knew | |
13424 | it. If found, update line number and address in the matching | |
13425 | static tracepoint. This will get confused if there's more than one | |
13426 | marker with the same ID (possible in UST, although unadvised | |
13427 | precisely because it confuses tools). */ | |
13428 | ||
13429 | static struct symtab_and_line | |
13430 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13431 | { | |
d9b3f62e | 13432 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13433 | struct static_tracepoint_marker marker; |
13434 | CORE_ADDR pc; | |
0fb4aa4b PA |
13435 | |
13436 | pc = sal.pc; | |
13437 | if (sal.line) | |
13438 | find_line_pc (sal.symtab, sal.line, &pc); | |
13439 | ||
13440 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13441 | { | |
5d9310c4 | 13442 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13443 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13444 | b->number, tp->static_trace_marker_id.c_str (), |
13445 | marker.str_id.c_str ()); | |
0fb4aa4b | 13446 | |
5d9310c4 | 13447 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13448 | |
13449 | return sal; | |
13450 | } | |
13451 | ||
13452 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13453 | by string ID. */ | |
13454 | if (!sal.explicit_pc | |
13455 | && sal.line != 0 | |
13456 | && sal.symtab != NULL | |
5d9310c4 | 13457 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13458 | { |
5d9310c4 SM |
13459 | std::vector<static_tracepoint_marker> markers |
13460 | = target_static_tracepoint_markers_by_strid | |
13461 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13462 | |
5d9310c4 | 13463 | if (!markers.empty ()) |
0fb4aa4b | 13464 | { |
0fb4aa4b | 13465 | struct symbol *sym; |
80e1d417 | 13466 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13467 | struct ui_out *uiout = current_uiout; |
67994074 | 13468 | struct explicit_location explicit_loc; |
0fb4aa4b | 13469 | |
5d9310c4 | 13470 | tpmarker = &markers[0]; |
0fb4aa4b | 13471 | |
5d9310c4 | 13472 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13473 | |
13474 | warning (_("marker for static tracepoint %d (%s) not " | |
13475 | "found at previous line number"), | |
5d9310c4 | 13476 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13477 | |
51abb421 | 13478 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13479 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13480 | uiout->text ("Now in "); |
0fb4aa4b PA |
13481 | if (sym) |
13482 | { | |
112e8700 SM |
13483 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13484 | uiout->text (" at "); | |
0fb4aa4b | 13485 | } |
112e8700 | 13486 | uiout->field_string ("file", |
05cba821 | 13487 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13488 | uiout->text (":"); |
0fb4aa4b | 13489 | |
112e8700 | 13490 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13491 | { |
0b0865da | 13492 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13493 | |
112e8700 | 13494 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13495 | } |
13496 | ||
112e8700 SM |
13497 | uiout->field_int ("line", sal2.line); |
13498 | uiout->text ("\n"); | |
0fb4aa4b | 13499 | |
80e1d417 | 13500 | b->loc->line_number = sal2.line; |
2f202fde | 13501 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13502 | |
d28cd78a | 13503 | b->location.reset (NULL); |
67994074 KS |
13504 | initialize_explicit_location (&explicit_loc); |
13505 | explicit_loc.source_filename | |
00e52e53 | 13506 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13507 | explicit_loc.line_offset.offset = b->loc->line_number; |
13508 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13509 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13510 | |
13511 | /* Might be nice to check if function changed, and warn if | |
13512 | so. */ | |
0fb4aa4b PA |
13513 | } |
13514 | } | |
13515 | return sal; | |
13516 | } | |
13517 | ||
8d3788bd VP |
13518 | /* Returns 1 iff locations A and B are sufficiently same that |
13519 | we don't need to report breakpoint as changed. */ | |
13520 | ||
13521 | static int | |
13522 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13523 | { | |
13524 | while (a && b) | |
13525 | { | |
13526 | if (a->address != b->address) | |
13527 | return 0; | |
13528 | ||
13529 | if (a->shlib_disabled != b->shlib_disabled) | |
13530 | return 0; | |
13531 | ||
13532 | if (a->enabled != b->enabled) | |
13533 | return 0; | |
13534 | ||
13535 | a = a->next; | |
13536 | b = b->next; | |
13537 | } | |
13538 | ||
13539 | if ((a == NULL) != (b == NULL)) | |
13540 | return 0; | |
13541 | ||
13542 | return 1; | |
13543 | } | |
13544 | ||
c2f4122d PA |
13545 | /* Split all locations of B that are bound to PSPACE out of B's |
13546 | location list to a separate list and return that list's head. If | |
13547 | PSPACE is NULL, hoist out all locations of B. */ | |
13548 | ||
13549 | static struct bp_location * | |
13550 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13551 | { | |
13552 | struct bp_location head; | |
13553 | struct bp_location *i = b->loc; | |
13554 | struct bp_location **i_link = &b->loc; | |
13555 | struct bp_location *hoisted = &head; | |
13556 | ||
13557 | if (pspace == NULL) | |
13558 | { | |
13559 | i = b->loc; | |
13560 | b->loc = NULL; | |
13561 | return i; | |
13562 | } | |
13563 | ||
13564 | head.next = NULL; | |
13565 | ||
13566 | while (i != NULL) | |
13567 | { | |
13568 | if (i->pspace == pspace) | |
13569 | { | |
13570 | *i_link = i->next; | |
13571 | i->next = NULL; | |
13572 | hoisted->next = i; | |
13573 | hoisted = i; | |
13574 | } | |
13575 | else | |
13576 | i_link = &i->next; | |
13577 | i = *i_link; | |
13578 | } | |
13579 | ||
13580 | return head.next; | |
13581 | } | |
13582 | ||
13583 | /* Create new breakpoint locations for B (a hardware or software | |
13584 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13585 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13586 | FILTER_PSPACE. Locations of other program spaces are left | |
13587 | untouched. */ | |
f1310107 | 13588 | |
0e30163f | 13589 | void |
0d381245 | 13590 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13591 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13592 | gdb::array_view<const symtab_and_line> sals, |
13593 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13594 | { |
c2f4122d | 13595 | struct bp_location *existing_locations; |
0d381245 | 13596 | |
6c5b2ebe | 13597 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13598 | { |
13599 | /* Ranged breakpoints have only one start location and one end | |
13600 | location. */ | |
13601 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13602 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13603 | "multiple locations found\n"), | |
13604 | b->number); | |
13605 | return; | |
13606 | } | |
f1310107 | 13607 | |
4a64f543 MS |
13608 | /* If there's no new locations, and all existing locations are |
13609 | pending, don't do anything. This optimizes the common case where | |
13610 | all locations are in the same shared library, that was unloaded. | |
13611 | We'd like to retain the location, so that when the library is | |
13612 | loaded again, we don't loose the enabled/disabled status of the | |
13613 | individual locations. */ | |
6c5b2ebe | 13614 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13615 | return; |
13616 | ||
c2f4122d | 13617 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13618 | |
6c5b2ebe | 13619 | for (const auto &sal : sals) |
fe3f5fa8 | 13620 | { |
f8eba3c6 TT |
13621 | struct bp_location *new_loc; |
13622 | ||
6c5b2ebe | 13623 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13624 | |
6c5b2ebe | 13625 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13626 | |
0d381245 VP |
13627 | /* Reparse conditions, they might contain references to the |
13628 | old symtab. */ | |
13629 | if (b->cond_string != NULL) | |
13630 | { | |
bbc13ae3 | 13631 | const char *s; |
fe3f5fa8 | 13632 | |
0d381245 | 13633 | s = b->cond_string; |
492d29ea | 13634 | TRY |
0d381245 | 13635 | { |
6c5b2ebe PA |
13636 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13637 | block_for_pc (sal.pc), | |
0d381245 VP |
13638 | 0); |
13639 | } | |
492d29ea | 13640 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13641 | { |
3e43a32a MS |
13642 | warning (_("failed to reevaluate condition " |
13643 | "for breakpoint %d: %s"), | |
0d381245 VP |
13644 | b->number, e.message); |
13645 | new_loc->enabled = 0; | |
13646 | } | |
492d29ea | 13647 | END_CATCH |
0d381245 | 13648 | } |
fe3f5fa8 | 13649 | |
6c5b2ebe | 13650 | if (!sals_end.empty ()) |
f1310107 | 13651 | { |
6c5b2ebe | 13652 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13653 | |
6c5b2ebe | 13654 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13655 | } |
0d381245 | 13656 | } |
fe3f5fa8 | 13657 | |
4a64f543 MS |
13658 | /* If possible, carry over 'disable' status from existing |
13659 | breakpoints. */ | |
0d381245 VP |
13660 | { |
13661 | struct bp_location *e = existing_locations; | |
776592bf DE |
13662 | /* If there are multiple breakpoints with the same function name, |
13663 | e.g. for inline functions, comparing function names won't work. | |
13664 | Instead compare pc addresses; this is just a heuristic as things | |
13665 | may have moved, but in practice it gives the correct answer | |
13666 | often enough until a better solution is found. */ | |
13667 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13668 | ||
0d381245 VP |
13669 | for (; e; e = e->next) |
13670 | { | |
13671 | if (!e->enabled && e->function_name) | |
13672 | { | |
13673 | struct bp_location *l = b->loc; | |
776592bf DE |
13674 | if (have_ambiguous_names) |
13675 | { | |
13676 | for (; l; l = l->next) | |
f1310107 | 13677 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13678 | { |
13679 | l->enabled = 0; | |
13680 | break; | |
13681 | } | |
13682 | } | |
13683 | else | |
13684 | { | |
13685 | for (; l; l = l->next) | |
13686 | if (l->function_name | |
13687 | && strcmp (e->function_name, l->function_name) == 0) | |
13688 | { | |
13689 | l->enabled = 0; | |
13690 | break; | |
13691 | } | |
13692 | } | |
0d381245 VP |
13693 | } |
13694 | } | |
13695 | } | |
fe3f5fa8 | 13696 | |
8d3788bd | 13697 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13698 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13699 | } |
13700 | ||
f00aae0f | 13701 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13702 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13703 | ||
6c5b2ebe | 13704 | static std::vector<symtab_and_line> |
f00aae0f | 13705 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13706 | struct program_space *search_pspace, int *found) |
ef23e705 | 13707 | { |
492d29ea | 13708 | struct gdb_exception exception = exception_none; |
ef23e705 | 13709 | |
983af33b | 13710 | gdb_assert (b->ops != NULL); |
ef23e705 | 13711 | |
6c5b2ebe PA |
13712 | std::vector<symtab_and_line> sals; |
13713 | ||
492d29ea | 13714 | TRY |
ef23e705 | 13715 | { |
6c5b2ebe | 13716 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13717 | } |
492d29ea | 13718 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13719 | { |
13720 | int not_found_and_ok = 0; | |
492d29ea PA |
13721 | |
13722 | exception = e; | |
13723 | ||
ef23e705 TJB |
13724 | /* For pending breakpoints, it's expected that parsing will |
13725 | fail until the right shared library is loaded. User has | |
13726 | already told to create pending breakpoints and don't need | |
13727 | extra messages. If breakpoint is in bp_shlib_disabled | |
13728 | state, then user already saw the message about that | |
13729 | breakpoint being disabled, and don't want to see more | |
13730 | errors. */ | |
58438ac1 | 13731 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13732 | && (b->condition_not_parsed |
13733 | || (b->loc != NULL | |
13734 | && search_pspace != NULL | |
13735 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13736 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13737 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13738 | || b->enable_state == bp_disabled)) |
13739 | not_found_and_ok = 1; | |
13740 | ||
13741 | if (!not_found_and_ok) | |
13742 | { | |
13743 | /* We surely don't want to warn about the same breakpoint | |
13744 | 10 times. One solution, implemented here, is disable | |
13745 | the breakpoint on error. Another solution would be to | |
13746 | have separate 'warning emitted' flag. Since this | |
13747 | happens only when a binary has changed, I don't know | |
13748 | which approach is better. */ | |
13749 | b->enable_state = bp_disabled; | |
13750 | throw_exception (e); | |
13751 | } | |
13752 | } | |
492d29ea | 13753 | END_CATCH |
ef23e705 | 13754 | |
492d29ea | 13755 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13756 | { |
6c5b2ebe PA |
13757 | for (auto &sal : sals) |
13758 | resolve_sal_pc (&sal); | |
f00aae0f | 13759 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13760 | { |
ed1d1739 KS |
13761 | char *cond_string, *extra_string; |
13762 | int thread, task; | |
ef23e705 | 13763 | |
6c5b2ebe | 13764 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13765 | &cond_string, &thread, &task, |
13766 | &extra_string); | |
f00aae0f | 13767 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13768 | if (cond_string) |
13769 | b->cond_string = cond_string; | |
13770 | b->thread = thread; | |
13771 | b->task = task; | |
e7e0cddf | 13772 | if (extra_string) |
f00aae0f KS |
13773 | { |
13774 | xfree (b->extra_string); | |
13775 | b->extra_string = extra_string; | |
13776 | } | |
ef23e705 TJB |
13777 | b->condition_not_parsed = 0; |
13778 | } | |
13779 | ||
983af33b | 13780 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13781 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13782 | |
58438ac1 TT |
13783 | *found = 1; |
13784 | } | |
13785 | else | |
13786 | *found = 0; | |
ef23e705 TJB |
13787 | |
13788 | return sals; | |
13789 | } | |
13790 | ||
348d480f PA |
13791 | /* The default re_set method, for typical hardware or software |
13792 | breakpoints. Reevaluate the breakpoint and recreate its | |
13793 | locations. */ | |
13794 | ||
13795 | static void | |
28010a5d | 13796 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13797 | { |
c2f4122d | 13798 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13799 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13800 | |
6c5b2ebe PA |
13801 | int found; |
13802 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13803 | filter_pspace, &found); | |
ef23e705 | 13804 | if (found) |
6c5b2ebe | 13805 | expanded = std::move (sals); |
ef23e705 | 13806 | |
f00aae0f | 13807 | if (b->location_range_end != NULL) |
f1310107 | 13808 | { |
6c5b2ebe PA |
13809 | std::vector<symtab_and_line> sals_end |
13810 | = location_to_sals (b, b->location_range_end.get (), | |
13811 | filter_pspace, &found); | |
f1310107 | 13812 | if (found) |
6c5b2ebe | 13813 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13814 | } |
13815 | ||
c2f4122d | 13816 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13817 | } |
13818 | ||
983af33b SDJ |
13819 | /* Default method for creating SALs from an address string. It basically |
13820 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13821 | ||
13822 | static void | |
f00aae0f KS |
13823 | create_sals_from_location_default (const struct event_location *location, |
13824 | struct linespec_result *canonical, | |
13825 | enum bptype type_wanted) | |
983af33b | 13826 | { |
f00aae0f | 13827 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13828 | } |
13829 | ||
13830 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13831 | function for the `create_breakpoints_sal' method of | |
13832 | breakpoint_ops. */ | |
13833 | ||
13834 | static void | |
13835 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13836 | struct linespec_result *canonical, | |
e1e01040 PA |
13837 | gdb::unique_xmalloc_ptr<char> cond_string, |
13838 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13839 | enum bptype type_wanted, |
13840 | enum bpdisp disposition, | |
13841 | int thread, | |
13842 | int task, int ignore_count, | |
13843 | const struct breakpoint_ops *ops, | |
13844 | int from_tty, int enabled, | |
44f238bb | 13845 | int internal, unsigned flags) |
983af33b | 13846 | { |
e1e01040 PA |
13847 | create_breakpoints_sal (gdbarch, canonical, |
13848 | std::move (cond_string), | |
13849 | std::move (extra_string), | |
983af33b SDJ |
13850 | type_wanted, disposition, |
13851 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13852 | enabled, internal, flags); |
983af33b SDJ |
13853 | } |
13854 | ||
13855 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13856 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13857 | |
6c5b2ebe | 13858 | static std::vector<symtab_and_line> |
f00aae0f KS |
13859 | decode_location_default (struct breakpoint *b, |
13860 | const struct event_location *location, | |
6c5b2ebe | 13861 | struct program_space *search_pspace) |
983af33b SDJ |
13862 | { |
13863 | struct linespec_result canonical; | |
13864 | ||
c2f4122d | 13865 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13866 | (struct symtab *) NULL, 0, |
13867 | &canonical, multiple_symbols_all, | |
13868 | b->filter); | |
13869 | ||
13870 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13871 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13872 | |
6c5b2ebe | 13873 | if (!canonical.lsals.empty ()) |
983af33b | 13874 | { |
6c5b2ebe PA |
13875 | const linespec_sals &lsal = canonical.lsals[0]; |
13876 | return std::move (lsal.sals); | |
983af33b | 13877 | } |
6c5b2ebe | 13878 | return {}; |
983af33b SDJ |
13879 | } |
13880 | ||
bf469271 | 13881 | /* Reset a breakpoint. */ |
c906108c | 13882 | |
bf469271 PA |
13883 | static void |
13884 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13885 | { |
fdf44873 TT |
13886 | input_radix = b->input_radix; |
13887 | set_language (b->language); | |
c906108c | 13888 | |
348d480f | 13889 | b->ops->re_set (b); |
c906108c SS |
13890 | } |
13891 | ||
c2f4122d PA |
13892 | /* Re-set breakpoint locations for the current program space. |
13893 | Locations bound to other program spaces are left untouched. */ | |
13894 | ||
c906108c | 13895 | void |
69de3c6a | 13896 | breakpoint_re_set (void) |
c906108c | 13897 | { |
35df4500 | 13898 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13899 | |
c5aa993b | 13900 | { |
fdf44873 TT |
13901 | scoped_restore_current_language save_language; |
13902 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13903 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13904 | |
5ed8105e PA |
13905 | /* Note: we must not try to insert locations until after all |
13906 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13907 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13908 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13909 | |
5ed8105e PA |
13910 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13911 | { | |
bf469271 PA |
13912 | TRY |
13913 | { | |
13914 | breakpoint_re_set_one (b); | |
13915 | } | |
13916 | CATCH (ex, RETURN_MASK_ALL) | |
13917 | { | |
13918 | exception_fprintf (gdb_stderr, ex, | |
13919 | "Error in re-setting breakpoint %d: ", | |
13920 | b->number); | |
13921 | } | |
13922 | END_CATCH | |
5ed8105e | 13923 | } |
5ed8105e PA |
13924 | |
13925 | jit_breakpoint_re_set (); | |
13926 | } | |
6c95b8df | 13927 | |
af02033e PP |
13928 | create_overlay_event_breakpoint (); |
13929 | create_longjmp_master_breakpoint (); | |
13930 | create_std_terminate_master_breakpoint (); | |
186c406b | 13931 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13932 | |
13933 | /* Now we can insert. */ | |
13934 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13935 | } |
13936 | \f | |
c906108c SS |
13937 | /* Reset the thread number of this breakpoint: |
13938 | ||
13939 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13940 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13941 | void |
fba45db2 | 13942 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13943 | { |
13944 | if (b->thread != -1) | |
13945 | { | |
39f77062 | 13946 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 13947 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
13948 | |
13949 | /* We're being called after following a fork. The new fork is | |
13950 | selected as current, and unless this was a vfork will have a | |
13951 | different program space from the original thread. Reset that | |
13952 | as well. */ | |
13953 | b->loc->pspace = current_program_space; | |
c906108c SS |
13954 | } |
13955 | } | |
13956 | ||
03ac34d5 MS |
13957 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13958 | If from_tty is nonzero, it prints a message to that effect, | |
13959 | which ends with a period (no newline). */ | |
13960 | ||
c906108c | 13961 | void |
fba45db2 | 13962 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13963 | { |
52f0bd74 | 13964 | struct breakpoint *b; |
c906108c SS |
13965 | |
13966 | if (count < 0) | |
13967 | count = 0; | |
13968 | ||
13969 | ALL_BREAKPOINTS (b) | |
13970 | if (b->number == bptnum) | |
c5aa993b | 13971 | { |
d77f58be SS |
13972 | if (is_tracepoint (b)) |
13973 | { | |
13974 | if (from_tty && count != 0) | |
13975 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13976 | bptnum); | |
13977 | return; | |
13978 | } | |
13979 | ||
c5aa993b | 13980 | b->ignore_count = count; |
221ea385 KS |
13981 | if (from_tty) |
13982 | { | |
13983 | if (count == 0) | |
3e43a32a MS |
13984 | printf_filtered (_("Will stop next time " |
13985 | "breakpoint %d is reached."), | |
221ea385 KS |
13986 | bptnum); |
13987 | else if (count == 1) | |
a3f17187 | 13988 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13989 | bptnum); |
13990 | else | |
3e43a32a MS |
13991 | printf_filtered (_("Will ignore next %d " |
13992 | "crossings of breakpoint %d."), | |
221ea385 KS |
13993 | count, bptnum); |
13994 | } | |
76727919 | 13995 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13996 | return; |
13997 | } | |
c906108c | 13998 | |
8a3fe4f8 | 13999 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14000 | } |
14001 | ||
c906108c SS |
14002 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14003 | ||
14004 | static void | |
0b39b52e | 14005 | ignore_command (const char *args, int from_tty) |
c906108c | 14006 | { |
0b39b52e | 14007 | const char *p = args; |
52f0bd74 | 14008 | int num; |
c906108c SS |
14009 | |
14010 | if (p == 0) | |
e2e0b3e5 | 14011 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14012 | |
c906108c | 14013 | num = get_number (&p); |
5c44784c | 14014 | if (num == 0) |
8a3fe4f8 | 14015 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14016 | if (*p == 0) |
8a3fe4f8 | 14017 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14018 | |
14019 | set_ignore_count (num, | |
14020 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14021 | from_tty); | |
221ea385 KS |
14022 | if (from_tty) |
14023 | printf_filtered ("\n"); | |
c906108c SS |
14024 | } |
14025 | \f | |
d0fe4701 XR |
14026 | |
14027 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14028 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14029 | |
14030 | static void | |
d0fe4701 XR |
14031 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14032 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14033 | { |
d0fe4701 XR |
14034 | if (bp_num_range.first == 0) |
14035 | { | |
14036 | warning (_("bad breakpoint number at or near '%d'"), | |
14037 | bp_num_range.first); | |
14038 | } | |
14039 | else | |
c906108c | 14040 | { |
d0fe4701 | 14041 | struct breakpoint *b, *tmp; |
197f0a60 | 14042 | |
d0fe4701 | 14043 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14044 | { |
d0fe4701 XR |
14045 | bool match = false; |
14046 | ||
5c44784c | 14047 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14048 | if (b->number == i) |
5c44784c | 14049 | { |
bfd28288 | 14050 | match = true; |
48649e1b | 14051 | function (b); |
11cf8741 | 14052 | break; |
5c44784c | 14053 | } |
bfd28288 | 14054 | if (!match) |
d0fe4701 | 14055 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14056 | } |
c906108c SS |
14057 | } |
14058 | } | |
14059 | ||
d0fe4701 XR |
14060 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14061 | ARGS. */ | |
14062 | ||
14063 | static void | |
14064 | map_breakpoint_numbers (const char *args, | |
14065 | gdb::function_view<void (breakpoint *)> function) | |
14066 | { | |
14067 | if (args == NULL || *args == '\0') | |
14068 | error_no_arg (_("one or more breakpoint numbers")); | |
14069 | ||
14070 | number_or_range_parser parser (args); | |
14071 | ||
14072 | while (!parser.finished ()) | |
14073 | { | |
14074 | int num = parser.get_number (); | |
14075 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14076 | } | |
14077 | } | |
14078 | ||
14079 | /* Return the breakpoint location structure corresponding to the | |
14080 | BP_NUM and LOC_NUM values. */ | |
14081 | ||
0d381245 | 14082 | static struct bp_location * |
d0fe4701 | 14083 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14084 | { |
0d381245 | 14085 | struct breakpoint *b; |
0d381245 VP |
14086 | |
14087 | ALL_BREAKPOINTS (b) | |
14088 | if (b->number == bp_num) | |
14089 | { | |
14090 | break; | |
14091 | } | |
14092 | ||
14093 | if (!b || b->number != bp_num) | |
d0fe4701 | 14094 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14095 | |
0d381245 | 14096 | if (loc_num == 0) |
d0fe4701 | 14097 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14098 | |
d0fe4701 XR |
14099 | int n = 0; |
14100 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14101 | if (++n == loc_num) | |
14102 | return loc; | |
14103 | ||
14104 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14105 | } |
14106 | ||
95e95a6d PA |
14107 | /* Modes of operation for extract_bp_num. */ |
14108 | enum class extract_bp_kind | |
14109 | { | |
14110 | /* Extracting a breakpoint number. */ | |
14111 | bp, | |
14112 | ||
14113 | /* Extracting a location number. */ | |
14114 | loc, | |
14115 | }; | |
14116 | ||
14117 | /* Extract a breakpoint or location number (as determined by KIND) | |
14118 | from the string starting at START. TRAILER is a character which | |
14119 | can be found after the number. If you don't want a trailer, use | |
14120 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14121 | string. This always returns a positive integer. */ | |
14122 | ||
14123 | static int | |
14124 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14125 | int trailer, const char **end_out = NULL) | |
14126 | { | |
14127 | const char *end = start; | |
14128 | int num = get_number_trailer (&end, trailer); | |
14129 | if (num < 0) | |
14130 | error (kind == extract_bp_kind::bp | |
14131 | ? _("Negative breakpoint number '%.*s'") | |
14132 | : _("Negative breakpoint location number '%.*s'"), | |
14133 | int (end - start), start); | |
14134 | if (num == 0) | |
14135 | error (kind == extract_bp_kind::bp | |
14136 | ? _("Bad breakpoint number '%.*s'") | |
14137 | : _("Bad breakpoint location number '%.*s'"), | |
14138 | int (end - start), start); | |
14139 | ||
14140 | if (end_out != NULL) | |
14141 | *end_out = end; | |
14142 | return num; | |
14143 | } | |
14144 | ||
14145 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14146 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14147 | representing the (inclusive) range. The returned pair's elements | |
14148 | are always positive integers. */ | |
14149 | ||
14150 | static std::pair<int, int> | |
14151 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14152 | const std::string &arg, | |
14153 | std::string::size_type arg_offset) | |
14154 | { | |
14155 | std::pair<int, int> range; | |
14156 | const char *bp_loc = &arg[arg_offset]; | |
14157 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14158 | if (dash != std::string::npos) | |
14159 | { | |
14160 | /* bp_loc is a range (x-z). */ | |
14161 | if (arg.length () == dash + 1) | |
14162 | error (kind == extract_bp_kind::bp | |
14163 | ? _("Bad breakpoint number at or near: '%s'") | |
14164 | : _("Bad breakpoint location number at or near: '%s'"), | |
14165 | bp_loc); | |
14166 | ||
14167 | const char *end; | |
14168 | const char *start_first = bp_loc; | |
14169 | const char *start_second = &arg[dash + 1]; | |
14170 | range.first = extract_bp_num (kind, start_first, '-'); | |
14171 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14172 | ||
14173 | if (range.first > range.second) | |
14174 | error (kind == extract_bp_kind::bp | |
14175 | ? _("Inverted breakpoint range at '%.*s'") | |
14176 | : _("Inverted breakpoint location range at '%.*s'"), | |
14177 | int (end - start_first), start_first); | |
14178 | } | |
14179 | else | |
14180 | { | |
14181 | /* bp_loc is a single value. */ | |
14182 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14183 | range.second = range.first; | |
14184 | } | |
14185 | return range; | |
14186 | } | |
14187 | ||
d0fe4701 XR |
14188 | /* Extract the breakpoint/location range specified by ARG. Returns |
14189 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14190 | BP_LOC_RANGE. | |
14191 | ||
14192 | ARG may be in any of the following forms: | |
14193 | ||
14194 | x where 'x' is a breakpoint number. | |
14195 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14196 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14197 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14198 | location number range. | |
14199 | */ | |
14200 | ||
cc638e86 | 14201 | static void |
d0fe4701 XR |
14202 | extract_bp_number_and_location (const std::string &arg, |
14203 | std::pair<int, int> &bp_num_range, | |
14204 | std::pair<int, int> &bp_loc_range) | |
14205 | { | |
14206 | std::string::size_type dot = arg.find ('.'); | |
14207 | ||
14208 | if (dot != std::string::npos) | |
14209 | { | |
14210 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14211 | ||
14212 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14213 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14214 | |
95e95a6d PA |
14215 | bp_num_range.first |
14216 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14217 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14218 | |
95e95a6d PA |
14219 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14220 | arg, dot + 1); | |
d0fe4701 XR |
14221 | } |
14222 | else | |
14223 | { | |
14224 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14225 | |
95e95a6d | 14226 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14227 | bp_loc_range.first = 0; |
14228 | bp_loc_range.second = 0; | |
14229 | } | |
d0fe4701 XR |
14230 | } |
14231 | ||
14232 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14233 | specifies whether to enable or disable. */ | |
14234 | ||
14235 | static void | |
14236 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14237 | { | |
14238 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14239 | if (loc != NULL) | |
14240 | { | |
14241 | if (loc->enabled != enable) | |
14242 | { | |
14243 | loc->enabled = enable; | |
14244 | mark_breakpoint_location_modified (loc); | |
14245 | } | |
14246 | if (target_supports_enable_disable_tracepoint () | |
14247 | && current_trace_status ()->running && loc->owner | |
14248 | && is_tracepoint (loc->owner)) | |
14249 | target_disable_tracepoint (loc); | |
14250 | } | |
14251 | update_global_location_list (UGLL_DONT_INSERT); | |
14252 | } | |
14253 | ||
14254 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14255 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14256 | (inclusive) range of location numbers of that breakpoint to | |
14257 | enable/disable. ENABLE specifies whether to enable or disable the | |
14258 | location. */ | |
14259 | ||
14260 | static void | |
14261 | enable_disable_breakpoint_location_range (int bp_num, | |
14262 | std::pair<int, int> &bp_loc_range, | |
14263 | bool enable) | |
14264 | { | |
14265 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14266 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14267 | } | |
0d381245 | 14268 | |
1900040c MS |
14269 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14270 | If from_tty is nonzero, it prints a message to that effect, | |
14271 | which ends with a period (no newline). */ | |
14272 | ||
c906108c | 14273 | void |
fba45db2 | 14274 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14275 | { |
14276 | /* Never disable a watchpoint scope breakpoint; we want to | |
14277 | hit them when we leave scope so we can delete both the | |
14278 | watchpoint and its scope breakpoint at that time. */ | |
14279 | if (bpt->type == bp_watchpoint_scope) | |
14280 | return; | |
14281 | ||
b5de0fa7 | 14282 | bpt->enable_state = bp_disabled; |
c906108c | 14283 | |
b775012e LM |
14284 | /* Mark breakpoint locations modified. */ |
14285 | mark_breakpoint_modified (bpt); | |
14286 | ||
d248b706 KY |
14287 | if (target_supports_enable_disable_tracepoint () |
14288 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14289 | { | |
14290 | struct bp_location *location; | |
14291 | ||
14292 | for (location = bpt->loc; location; location = location->next) | |
14293 | target_disable_tracepoint (location); | |
14294 | } | |
14295 | ||
44702360 | 14296 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14297 | |
76727919 | 14298 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14299 | } |
14300 | ||
d0fe4701 XR |
14301 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14302 | specified in ARGS. ARGS may be in any of the formats handled by | |
14303 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14304 | or disable the breakpoints/locations. */ | |
14305 | ||
c906108c | 14306 | static void |
d0fe4701 | 14307 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14308 | { |
c906108c | 14309 | if (args == 0) |
46c6471b PA |
14310 | { |
14311 | struct breakpoint *bpt; | |
14312 | ||
14313 | ALL_BREAKPOINTS (bpt) | |
14314 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14315 | { |
14316 | if (enable) | |
14317 | enable_breakpoint (bpt); | |
14318 | else | |
14319 | disable_breakpoint (bpt); | |
14320 | } | |
46c6471b | 14321 | } |
9eaabc75 | 14322 | else |
0d381245 | 14323 | { |
cb791d59 | 14324 | std::string num = extract_arg (&args); |
9eaabc75 | 14325 | |
cb791d59 | 14326 | while (!num.empty ()) |
d248b706 | 14327 | { |
d0fe4701 | 14328 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14329 | |
cc638e86 PA |
14330 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14331 | ||
14332 | if (bp_loc_range.first == bp_loc_range.second | |
14333 | && bp_loc_range.first == 0) | |
d0fe4701 | 14334 | { |
cc638e86 PA |
14335 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14336 | map_breakpoint_number_range (bp_num_range, | |
14337 | enable | |
14338 | ? enable_breakpoint | |
14339 | : disable_breakpoint); | |
14340 | } | |
14341 | else | |
14342 | { | |
14343 | /* Handle breakpoint ids with formats 'x.y' or | |
14344 | 'x.y-z'. */ | |
14345 | enable_disable_breakpoint_location_range | |
14346 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14347 | } |
9eaabc75 | 14348 | num = extract_arg (&args); |
d248b706 | 14349 | } |
0d381245 | 14350 | } |
c906108c SS |
14351 | } |
14352 | ||
d0fe4701 XR |
14353 | /* The disable command disables the specified breakpoints/locations |
14354 | (or all defined breakpoints) so they're no longer effective in | |
14355 | stopping the inferior. ARGS may be in any of the forms defined in | |
14356 | extract_bp_number_and_location. */ | |
14357 | ||
14358 | static void | |
14359 | disable_command (const char *args, int from_tty) | |
14360 | { | |
14361 | enable_disable_command (args, from_tty, false); | |
14362 | } | |
14363 | ||
c906108c | 14364 | static void |
816338b5 SS |
14365 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14366 | int count) | |
c906108c | 14367 | { |
afe38095 | 14368 | int target_resources_ok; |
c906108c SS |
14369 | |
14370 | if (bpt->type == bp_hardware_breakpoint) | |
14371 | { | |
14372 | int i; | |
c5aa993b | 14373 | i = hw_breakpoint_used_count (); |
53a5351d | 14374 | target_resources_ok = |
d92524f1 | 14375 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14376 | i + 1, 0); |
c906108c | 14377 | if (target_resources_ok == 0) |
8a3fe4f8 | 14378 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14379 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14380 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14381 | } |
14382 | ||
cc60f2e3 | 14383 | if (is_watchpoint (bpt)) |
c906108c | 14384 | { |
d07205c2 | 14385 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14386 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14387 | |
492d29ea | 14388 | TRY |
c906108c | 14389 | { |
3a5c3e22 PA |
14390 | struct watchpoint *w = (struct watchpoint *) bpt; |
14391 | ||
1e718ff1 TJB |
14392 | orig_enable_state = bpt->enable_state; |
14393 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14394 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14395 | } |
492d29ea | 14396 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14397 | { |
1e718ff1 | 14398 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14399 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14400 | bpt->number); | |
14401 | return; | |
c5aa993b | 14402 | } |
492d29ea | 14403 | END_CATCH |
c906108c | 14404 | } |
0101ce28 | 14405 | |
b775012e LM |
14406 | bpt->enable_state = bp_enabled; |
14407 | ||
14408 | /* Mark breakpoint locations modified. */ | |
14409 | mark_breakpoint_modified (bpt); | |
14410 | ||
d248b706 KY |
14411 | if (target_supports_enable_disable_tracepoint () |
14412 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14413 | { | |
14414 | struct bp_location *location; | |
14415 | ||
14416 | for (location = bpt->loc; location; location = location->next) | |
14417 | target_enable_tracepoint (location); | |
14418 | } | |
14419 | ||
b4c291bb | 14420 | bpt->disposition = disposition; |
816338b5 | 14421 | bpt->enable_count = count; |
44702360 | 14422 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14423 | |
76727919 | 14424 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14425 | } |
14426 | ||
fe3f5fa8 | 14427 | |
c906108c | 14428 | void |
fba45db2 | 14429 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14430 | { |
816338b5 | 14431 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14432 | } |
14433 | ||
d0fe4701 XR |
14434 | /* The enable command enables the specified breakpoints/locations (or |
14435 | all defined breakpoints) so they once again become (or continue to | |
14436 | be) effective in stopping the inferior. ARGS may be in any of the | |
14437 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14438 | |
c906108c | 14439 | static void |
981a3fb3 | 14440 | enable_command (const char *args, int from_tty) |
c906108c | 14441 | { |
d0fe4701 | 14442 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14443 | } |
14444 | ||
c906108c | 14445 | static void |
4495129a | 14446 | enable_once_command (const char *args, int from_tty) |
c906108c | 14447 | { |
48649e1b TT |
14448 | map_breakpoint_numbers |
14449 | (args, [&] (breakpoint *b) | |
14450 | { | |
14451 | iterate_over_related_breakpoints | |
14452 | (b, [&] (breakpoint *bpt) | |
14453 | { | |
14454 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14455 | }); | |
14456 | }); | |
816338b5 SS |
14457 | } |
14458 | ||
14459 | static void | |
4495129a | 14460 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14461 | { |
b9d61307 SM |
14462 | int count; |
14463 | ||
14464 | if (args == NULL) | |
14465 | error_no_arg (_("hit count")); | |
14466 | ||
14467 | count = get_number (&args); | |
816338b5 | 14468 | |
48649e1b TT |
14469 | map_breakpoint_numbers |
14470 | (args, [&] (breakpoint *b) | |
14471 | { | |
14472 | iterate_over_related_breakpoints | |
14473 | (b, [&] (breakpoint *bpt) | |
14474 | { | |
14475 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14476 | }); | |
14477 | }); | |
c906108c SS |
14478 | } |
14479 | ||
c906108c | 14480 | static void |
4495129a | 14481 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14482 | { |
48649e1b TT |
14483 | map_breakpoint_numbers |
14484 | (args, [&] (breakpoint *b) | |
14485 | { | |
14486 | iterate_over_related_breakpoints | |
14487 | (b, [&] (breakpoint *bpt) | |
14488 | { | |
14489 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14490 | }); | |
14491 | }); | |
c906108c SS |
14492 | } |
14493 | \f | |
fa8d40ab | 14494 | static void |
981a3fb3 | 14495 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14496 | { |
14497 | } | |
14498 | ||
14499 | static void | |
981a3fb3 | 14500 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14501 | { |
14502 | } | |
14503 | ||
1f3b5d1b PP |
14504 | /* Invalidate last known value of any hardware watchpoint if |
14505 | the memory which that value represents has been written to by | |
14506 | GDB itself. */ | |
14507 | ||
14508 | static void | |
8de0566d YQ |
14509 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14510 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14511 | const bfd_byte *data) |
14512 | { | |
14513 | struct breakpoint *bp; | |
14514 | ||
14515 | ALL_BREAKPOINTS (bp) | |
14516 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14517 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14518 | { |
3a5c3e22 | 14519 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14520 | |
850645cf | 14521 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14522 | { |
14523 | struct bp_location *loc; | |
14524 | ||
14525 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14526 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14527 | && loc->address + loc->length > addr | |
14528 | && addr + len > loc->address) | |
14529 | { | |
3a5c3e22 PA |
14530 | wp->val = NULL; |
14531 | wp->val_valid = 0; | |
14532 | } | |
14533 | } | |
1f3b5d1b PP |
14534 | } |
14535 | } | |
14536 | ||
8181d85f DJ |
14537 | /* Create and insert a breakpoint for software single step. */ |
14538 | ||
14539 | void | |
6c95b8df | 14540 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14541 | const address_space *aspace, |
4a64f543 | 14542 | CORE_ADDR next_pc) |
8181d85f | 14543 | { |
7c16b83e PA |
14544 | struct thread_info *tp = inferior_thread (); |
14545 | struct symtab_and_line sal; | |
14546 | CORE_ADDR pc = next_pc; | |
8181d85f | 14547 | |
34b7e8a6 PA |
14548 | if (tp->control.single_step_breakpoints == NULL) |
14549 | { | |
14550 | tp->control.single_step_breakpoints | |
5d5658a1 | 14551 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14552 | } |
8181d85f | 14553 | |
7c16b83e PA |
14554 | sal = find_pc_line (pc, 0); |
14555 | sal.pc = pc; | |
14556 | sal.section = find_pc_overlay (pc); | |
14557 | sal.explicit_pc = 1; | |
34b7e8a6 | 14558 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14559 | |
7c16b83e | 14560 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14561 | } |
14562 | ||
93f9a11f YQ |
14563 | /* Insert single step breakpoints according to the current state. */ |
14564 | ||
14565 | int | |
14566 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14567 | { | |
f5ea389a | 14568 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14569 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14570 | |
f5ea389a | 14571 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14572 | |
a0ff9e1a | 14573 | if (!next_pcs.empty ()) |
93f9a11f | 14574 | { |
f5ea389a | 14575 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14576 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14577 | |
a0ff9e1a | 14578 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14579 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14580 | ||
93f9a11f YQ |
14581 | return 1; |
14582 | } | |
14583 | else | |
14584 | return 0; | |
14585 | } | |
14586 | ||
34b7e8a6 | 14587 | /* See breakpoint.h. */ |
f02253f1 HZ |
14588 | |
14589 | int | |
7c16b83e | 14590 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14591 | const address_space *aspace, |
7c16b83e | 14592 | CORE_ADDR pc) |
1aafd4da | 14593 | { |
7c16b83e | 14594 | struct bp_location *loc; |
1aafd4da | 14595 | |
7c16b83e PA |
14596 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14597 | if (loc->inserted | |
14598 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14599 | return 1; | |
1aafd4da | 14600 | |
7c16b83e | 14601 | return 0; |
ef370185 JB |
14602 | } |
14603 | ||
14604 | /* Check whether a software single-step breakpoint is inserted at | |
14605 | PC. */ | |
14606 | ||
14607 | int | |
accd0bcd | 14608 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14609 | CORE_ADDR pc) |
14610 | { | |
34b7e8a6 PA |
14611 | struct breakpoint *bpt; |
14612 | ||
14613 | ALL_BREAKPOINTS (bpt) | |
14614 | { | |
14615 | if (bpt->type == bp_single_step | |
14616 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14617 | return 1; | |
14618 | } | |
14619 | return 0; | |
1aafd4da UW |
14620 | } |
14621 | ||
1042e4c0 SS |
14622 | /* Tracepoint-specific operations. */ |
14623 | ||
14624 | /* Set tracepoint count to NUM. */ | |
14625 | static void | |
14626 | set_tracepoint_count (int num) | |
14627 | { | |
14628 | tracepoint_count = num; | |
4fa62494 | 14629 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14630 | } |
14631 | ||
70221824 | 14632 | static void |
0b39b52e | 14633 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14634 | { |
55aa24fb | 14635 | struct breakpoint_ops *ops; |
55aa24fb | 14636 | |
ffc2605c TT |
14637 | event_location_up location = string_to_event_location (&arg, |
14638 | current_language); | |
5b56227b | 14639 | if (location != NULL |
ffc2605c | 14640 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14641 | ops = &tracepoint_probe_breakpoint_ops; |
14642 | else | |
14643 | ops = &tracepoint_breakpoint_ops; | |
14644 | ||
558a9d82 | 14645 | create_breakpoint (get_current_arch (), |
ffc2605c | 14646 | location.get (), |
f00aae0f | 14647 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14648 | 0 /* tempflag */, |
14649 | bp_tracepoint /* type_wanted */, | |
14650 | 0 /* Ignore count */, | |
14651 | pending_break_support, | |
14652 | ops, | |
14653 | from_tty, | |
14654 | 1 /* enabled */, | |
14655 | 0 /* internal */, 0); | |
1042e4c0 SS |
14656 | } |
14657 | ||
70221824 | 14658 | static void |
0b39b52e | 14659 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14660 | { |
ffc2605c TT |
14661 | event_location_up location = string_to_event_location (&arg, |
14662 | current_language); | |
558a9d82 | 14663 | create_breakpoint (get_current_arch (), |
ffc2605c | 14664 | location.get (), |
f00aae0f | 14665 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14666 | 0 /* tempflag */, |
14667 | bp_fast_tracepoint /* type_wanted */, | |
14668 | 0 /* Ignore count */, | |
14669 | pending_break_support, | |
14670 | &tracepoint_breakpoint_ops, | |
14671 | from_tty, | |
14672 | 1 /* enabled */, | |
14673 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14674 | } |
14675 | ||
14676 | /* strace command implementation. Creates a static tracepoint. */ | |
14677 | ||
70221824 | 14678 | static void |
0b39b52e | 14679 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14680 | { |
983af33b | 14681 | struct breakpoint_ops *ops; |
ffc2605c | 14682 | event_location_up location; |
983af33b SDJ |
14683 | |
14684 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14685 | or with a normal static tracepoint. */ | |
61012eef | 14686 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14687 | { |
14688 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14689 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14690 | } |
983af33b | 14691 | else |
f00aae0f KS |
14692 | { |
14693 | ops = &tracepoint_breakpoint_ops; | |
14694 | location = string_to_event_location (&arg, current_language); | |
14695 | } | |
983af33b | 14696 | |
558a9d82 | 14697 | create_breakpoint (get_current_arch (), |
ffc2605c | 14698 | location.get (), |
f00aae0f | 14699 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14700 | 0 /* tempflag */, |
14701 | bp_static_tracepoint /* type_wanted */, | |
14702 | 0 /* Ignore count */, | |
14703 | pending_break_support, | |
14704 | ops, | |
14705 | from_tty, | |
14706 | 1 /* enabled */, | |
14707 | 0 /* internal */, 0); | |
7a697b8d SS |
14708 | } |
14709 | ||
409873ef SS |
14710 | /* Set up a fake reader function that gets command lines from a linked |
14711 | list that was acquired during tracepoint uploading. */ | |
14712 | ||
14713 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14714 | static int next_cmd; |
409873ef SS |
14715 | |
14716 | static char * | |
14717 | read_uploaded_action (void) | |
14718 | { | |
a18ba4e4 | 14719 | char *rslt = nullptr; |
409873ef | 14720 | |
a18ba4e4 SM |
14721 | if (next_cmd < this_utp->cmd_strings.size ()) |
14722 | { | |
14723 | rslt = this_utp->cmd_strings[next_cmd]; | |
14724 | next_cmd++; | |
14725 | } | |
409873ef SS |
14726 | |
14727 | return rslt; | |
14728 | } | |
14729 | ||
00bf0b85 SS |
14730 | /* Given information about a tracepoint as recorded on a target (which |
14731 | can be either a live system or a trace file), attempt to create an | |
14732 | equivalent GDB tracepoint. This is not a reliable process, since | |
14733 | the target does not necessarily have all the information used when | |
14734 | the tracepoint was originally defined. */ | |
14735 | ||
d9b3f62e | 14736 | struct tracepoint * |
00bf0b85 | 14737 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14738 | { |
f2fc3015 TT |
14739 | const char *addr_str; |
14740 | char small_buf[100]; | |
d9b3f62e | 14741 | struct tracepoint *tp; |
fd9b8c24 | 14742 | |
409873ef SS |
14743 | if (utp->at_string) |
14744 | addr_str = utp->at_string; | |
14745 | else | |
14746 | { | |
14747 | /* In the absence of a source location, fall back to raw | |
14748 | address. Since there is no way to confirm that the address | |
14749 | means the same thing as when the trace was started, warn the | |
14750 | user. */ | |
3e43a32a MS |
14751 | warning (_("Uploaded tracepoint %d has no " |
14752 | "source location, using raw address"), | |
409873ef | 14753 | utp->number); |
8c042590 | 14754 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14755 | addr_str = small_buf; |
14756 | } | |
14757 | ||
14758 | /* There's not much we can do with a sequence of bytecodes. */ | |
14759 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14760 | warning (_("Uploaded tracepoint %d condition " |
14761 | "has no source form, ignoring it"), | |
409873ef | 14762 | utp->number); |
d5551862 | 14763 | |
ffc2605c TT |
14764 | event_location_up location = string_to_event_location (&addr_str, |
14765 | current_language); | |
8cdf0e15 | 14766 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14767 | location.get (), |
f00aae0f | 14768 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14769 | 0 /* parse cond/thread */, |
8cdf0e15 | 14770 | 0 /* tempflag */, |
0fb4aa4b | 14771 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14772 | 0 /* Ignore count */, |
14773 | pending_break_support, | |
348d480f | 14774 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14775 | 0 /* from_tty */, |
84f4c1fe | 14776 | utp->enabled /* enabled */, |
44f238bb PA |
14777 | 0 /* internal */, |
14778 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14779 | return NULL; |
fd9b8c24 | 14780 | |
409873ef | 14781 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14782 | tp = get_tracepoint (tracepoint_count); |
14783 | gdb_assert (tp != NULL); | |
d5551862 | 14784 | |
00bf0b85 SS |
14785 | if (utp->pass > 0) |
14786 | { | |
8c042590 | 14787 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14788 | tp->number); |
00bf0b85 | 14789 | |
409873ef | 14790 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14791 | } |
14792 | ||
409873ef SS |
14793 | /* If we have uploaded versions of the original commands, set up a |
14794 | special-purpose "reader" function and call the usual command line | |
14795 | reader, then pass the result to the breakpoint command-setting | |
14796 | function. */ | |
a18ba4e4 | 14797 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14798 | { |
93921405 | 14799 | command_line_up cmd_list; |
00bf0b85 | 14800 | |
409873ef | 14801 | this_utp = utp; |
3149d8c1 | 14802 | next_cmd = 0; |
d5551862 | 14803 | |
409873ef SS |
14804 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14805 | ||
c1fc2657 | 14806 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14807 | } |
a18ba4e4 SM |
14808 | else if (!utp->actions.empty () |
14809 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14810 | warning (_("Uploaded tracepoint %d actions " |
14811 | "have no source form, ignoring them"), | |
409873ef | 14812 | utp->number); |
00bf0b85 | 14813 | |
f196051f | 14814 | /* Copy any status information that might be available. */ |
c1fc2657 | 14815 | tp->hit_count = utp->hit_count; |
f196051f SS |
14816 | tp->traceframe_usage = utp->traceframe_usage; |
14817 | ||
00bf0b85 | 14818 | return tp; |
d9b3f62e | 14819 | } |
00bf0b85 | 14820 | |
1042e4c0 SS |
14821 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14822 | omitted. */ | |
14823 | ||
14824 | static void | |
1d12d88f | 14825 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14826 | { |
79a45e25 | 14827 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14828 | int num_printed; |
1042e4c0 | 14829 | |
e5a67952 | 14830 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14831 | |
14832 | if (num_printed == 0) | |
1042e4c0 | 14833 | { |
e5a67952 | 14834 | if (args == NULL || *args == '\0') |
112e8700 | 14835 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14836 | else |
112e8700 | 14837 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14838 | } |
ad443146 SS |
14839 | |
14840 | default_collect_info (); | |
1042e4c0 SS |
14841 | } |
14842 | ||
4a64f543 | 14843 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14844 | Not supported by all targets. */ |
14845 | static void | |
5fed81ff | 14846 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14847 | { |
14848 | enable_command (args, from_tty); | |
14849 | } | |
14850 | ||
4a64f543 | 14851 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14852 | Not supported by all targets. */ |
14853 | static void | |
5fed81ff | 14854 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14855 | { |
14856 | disable_command (args, from_tty); | |
14857 | } | |
14858 | ||
4a64f543 | 14859 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14860 | static void |
4495129a | 14861 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14862 | { |
35df4500 | 14863 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14864 | |
14865 | dont_repeat (); | |
14866 | ||
14867 | if (arg == 0) | |
14868 | { | |
14869 | int breaks_to_delete = 0; | |
14870 | ||
14871 | /* Delete all breakpoints if no argument. | |
14872 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14873 | have to be deleted with an explicit breakpoint number |
14874 | argument. */ | |
1042e4c0 | 14875 | ALL_TRACEPOINTS (b) |
46c6471b | 14876 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14877 | { |
14878 | breaks_to_delete = 1; | |
14879 | break; | |
14880 | } | |
1042e4c0 SS |
14881 | |
14882 | /* Ask user only if there are some breakpoints to delete. */ | |
14883 | if (!from_tty | |
14884 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14885 | { | |
35df4500 | 14886 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14887 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14888 | delete_breakpoint (b); |
1042e4c0 SS |
14889 | } |
14890 | } | |
14891 | else | |
48649e1b TT |
14892 | map_breakpoint_numbers |
14893 | (arg, [&] (breakpoint *b) | |
14894 | { | |
14895 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14896 | }); | |
1042e4c0 SS |
14897 | } |
14898 | ||
197f0a60 TT |
14899 | /* Helper function for trace_pass_command. */ |
14900 | ||
14901 | static void | |
d9b3f62e | 14902 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14903 | { |
d9b3f62e | 14904 | tp->pass_count = count; |
76727919 | 14905 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14906 | if (from_tty) |
14907 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14908 | tp->number, count); |
197f0a60 TT |
14909 | } |
14910 | ||
1042e4c0 SS |
14911 | /* Set passcount for tracepoint. |
14912 | ||
14913 | First command argument is passcount, second is tracepoint number. | |
14914 | If tracepoint number omitted, apply to most recently defined. | |
14915 | Also accepts special argument "all". */ | |
14916 | ||
14917 | static void | |
0b39b52e | 14918 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14919 | { |
d9b3f62e | 14920 | struct tracepoint *t1; |
0b39b52e | 14921 | ULONGEST count; |
1042e4c0 SS |
14922 | |
14923 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14924 | error (_("passcount command requires an " |
14925 | "argument (count + optional TP num)")); | |
1042e4c0 | 14926 | |
0b39b52e | 14927 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14928 | |
529480d0 | 14929 | args = skip_spaces (args); |
1042e4c0 SS |
14930 | if (*args && strncasecmp (args, "all", 3) == 0) |
14931 | { | |
d9b3f62e PA |
14932 | struct breakpoint *b; |
14933 | ||
1042e4c0 | 14934 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14935 | if (*args) |
14936 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14937 | |
d9b3f62e | 14938 | ALL_TRACEPOINTS (b) |
197f0a60 | 14939 | { |
d9b3f62e | 14940 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14941 | trace_pass_set_count (t1, count, from_tty); |
14942 | } | |
14943 | } | |
14944 | else if (*args == '\0') | |
1042e4c0 | 14945 | { |
5fa1d40e | 14946 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14947 | if (t1) |
197f0a60 TT |
14948 | trace_pass_set_count (t1, count, from_tty); |
14949 | } | |
14950 | else | |
14951 | { | |
bfd28288 PA |
14952 | number_or_range_parser parser (args); |
14953 | while (!parser.finished ()) | |
1042e4c0 | 14954 | { |
bfd28288 | 14955 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14956 | if (t1) |
14957 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14958 | } |
14959 | } | |
1042e4c0 SS |
14960 | } |
14961 | ||
d9b3f62e | 14962 | struct tracepoint * |
1042e4c0 SS |
14963 | get_tracepoint (int num) |
14964 | { | |
14965 | struct breakpoint *t; | |
14966 | ||
14967 | ALL_TRACEPOINTS (t) | |
14968 | if (t->number == num) | |
d9b3f62e | 14969 | return (struct tracepoint *) t; |
1042e4c0 SS |
14970 | |
14971 | return NULL; | |
14972 | } | |
14973 | ||
d5551862 SS |
14974 | /* Find the tracepoint with the given target-side number (which may be |
14975 | different from the tracepoint number after disconnecting and | |
14976 | reconnecting). */ | |
14977 | ||
d9b3f62e | 14978 | struct tracepoint * |
d5551862 SS |
14979 | get_tracepoint_by_number_on_target (int num) |
14980 | { | |
d9b3f62e | 14981 | struct breakpoint *b; |
d5551862 | 14982 | |
d9b3f62e PA |
14983 | ALL_TRACEPOINTS (b) |
14984 | { | |
14985 | struct tracepoint *t = (struct tracepoint *) b; | |
14986 | ||
14987 | if (t->number_on_target == num) | |
14988 | return t; | |
14989 | } | |
d5551862 SS |
14990 | |
14991 | return NULL; | |
14992 | } | |
14993 | ||
1042e4c0 | 14994 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14995 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14996 | If the argument is missing, the most recent tracepoint |
14997 | (tracepoint_count) is returned. */ | |
14998 | ||
d9b3f62e | 14999 | struct tracepoint * |
0b39b52e | 15000 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15001 | number_or_range_parser *parser) |
1042e4c0 | 15002 | { |
1042e4c0 SS |
15003 | struct breakpoint *t; |
15004 | int tpnum; | |
0b39b52e | 15005 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15006 | |
bfd28288 | 15007 | if (parser != NULL) |
197f0a60 | 15008 | { |
bfd28288 PA |
15009 | gdb_assert (!parser->finished ()); |
15010 | tpnum = parser->get_number (); | |
197f0a60 TT |
15011 | } |
15012 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15013 | tpnum = tracepoint_count; |
1042e4c0 | 15014 | else |
197f0a60 | 15015 | tpnum = get_number (arg); |
1042e4c0 SS |
15016 | |
15017 | if (tpnum <= 0) | |
15018 | { | |
15019 | if (instring && *instring) | |
15020 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15021 | instring); | |
15022 | else | |
5fa1d40e | 15023 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15024 | return NULL; |
15025 | } | |
15026 | ||
15027 | ALL_TRACEPOINTS (t) | |
15028 | if (t->number == tpnum) | |
15029 | { | |
d9b3f62e | 15030 | return (struct tracepoint *) t; |
1042e4c0 SS |
15031 | } |
15032 | ||
1042e4c0 SS |
15033 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15034 | return NULL; | |
15035 | } | |
15036 | ||
d9b3f62e PA |
15037 | void |
15038 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15039 | { | |
15040 | if (b->thread != -1) | |
15041 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15042 | ||
15043 | if (b->task != 0) | |
15044 | fprintf_unfiltered (fp, " task %d", b->task); | |
15045 | ||
15046 | fprintf_unfiltered (fp, "\n"); | |
15047 | } | |
15048 | ||
6149aea9 PA |
15049 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15050 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15051 | on each breakpoint and only include the ones for which it returns | |
15052 | non-zero. */ | |
15053 | ||
1042e4c0 | 15054 | static void |
4495129a | 15055 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15056 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15057 | { |
15058 | struct breakpoint *tp; | |
6149aea9 | 15059 | int any = 0; |
6149aea9 | 15060 | int extra_trace_bits = 0; |
1042e4c0 | 15061 | |
6149aea9 PA |
15062 | if (filename == 0 || *filename == 0) |
15063 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15064 | |
15065 | /* See if we have anything to save. */ | |
6149aea9 | 15066 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15067 | { |
6149aea9 | 15068 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15069 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15070 | continue; |
15071 | ||
15072 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15073 | if (filter && !filter (tp)) | |
15074 | continue; | |
15075 | ||
15076 | any = 1; | |
15077 | ||
15078 | if (is_tracepoint (tp)) | |
15079 | { | |
15080 | extra_trace_bits = 1; | |
15081 | ||
15082 | /* We can stop searching. */ | |
15083 | break; | |
15084 | } | |
1042e4c0 | 15085 | } |
6149aea9 PA |
15086 | |
15087 | if (!any) | |
1042e4c0 | 15088 | { |
6149aea9 | 15089 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15090 | return; |
15091 | } | |
15092 | ||
ee0c3293 | 15093 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15094 | |
15095 | stdio_file fp; | |
15096 | ||
ee0c3293 | 15097 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15098 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15099 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15100 | |
6149aea9 | 15101 | if (extra_trace_bits) |
d7e74731 | 15102 | save_trace_state_variables (&fp); |
8bf6485c | 15103 | |
6149aea9 | 15104 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15105 | { |
6149aea9 | 15106 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15107 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15108 | continue; |
8bf6485c | 15109 | |
6149aea9 PA |
15110 | /* If we have a filter, only save the breakpoints it accepts. */ |
15111 | if (filter && !filter (tp)) | |
15112 | continue; | |
15113 | ||
d7e74731 | 15114 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15115 | |
6149aea9 PA |
15116 | /* Note, we can't rely on tp->number for anything, as we can't |
15117 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15118 | instead. */ | |
15119 | ||
15120 | if (tp->cond_string) | |
d7e74731 | 15121 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15122 | |
15123 | if (tp->ignore_count) | |
d7e74731 | 15124 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15125 | |
2d9442cc | 15126 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15127 | { |
d7e74731 | 15128 | fp.puts (" commands\n"); |
a7bdde9e | 15129 | |
d7e74731 | 15130 | current_uiout->redirect (&fp); |
492d29ea | 15131 | TRY |
1042e4c0 | 15132 | { |
d1b0a7bf | 15133 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15134 | } |
492d29ea PA |
15135 | CATCH (ex, RETURN_MASK_ALL) |
15136 | { | |
112e8700 | 15137 | current_uiout->redirect (NULL); |
492d29ea PA |
15138 | throw_exception (ex); |
15139 | } | |
15140 | END_CATCH | |
1042e4c0 | 15141 | |
112e8700 | 15142 | current_uiout->redirect (NULL); |
d7e74731 | 15143 | fp.puts (" end\n"); |
1042e4c0 | 15144 | } |
6149aea9 PA |
15145 | |
15146 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15147 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15148 | |
15149 | /* If this is a multi-location breakpoint, check if the locations | |
15150 | should be individually disabled. Watchpoint locations are | |
15151 | special, and not user visible. */ | |
15152 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15153 | { | |
15154 | struct bp_location *loc; | |
15155 | int n = 1; | |
15156 | ||
15157 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15158 | if (!loc->enabled) | |
d7e74731 | 15159 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15160 | } |
1042e4c0 | 15161 | } |
8bf6485c | 15162 | |
6149aea9 | 15163 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15164 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15165 | |
1042e4c0 | 15166 | if (from_tty) |
ee0c3293 | 15167 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15168 | } |
15169 | ||
15170 | /* The `save breakpoints' command. */ | |
15171 | ||
15172 | static void | |
4495129a | 15173 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15174 | { |
15175 | save_breakpoints (args, from_tty, NULL); | |
15176 | } | |
15177 | ||
15178 | /* The `save tracepoints' command. */ | |
15179 | ||
15180 | static void | |
4495129a | 15181 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15182 | { |
15183 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15184 | } |
15185 | ||
15186 | /* Create a vector of all tracepoints. */ | |
15187 | ||
15188 | VEC(breakpoint_p) * | |
eeae04df | 15189 | all_tracepoints (void) |
1042e4c0 SS |
15190 | { |
15191 | VEC(breakpoint_p) *tp_vec = 0; | |
15192 | struct breakpoint *tp; | |
15193 | ||
15194 | ALL_TRACEPOINTS (tp) | |
15195 | { | |
15196 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15197 | } | |
15198 | ||
15199 | return tp_vec; | |
15200 | } | |
15201 | ||
c906108c | 15202 | \f |
629500fa KS |
15203 | /* This help string is used to consolidate all the help string for specifying |
15204 | locations used by several commands. */ | |
15205 | ||
15206 | #define LOCATION_HELP_STRING \ | |
15207 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15208 | source filename, function name, label name, and line number.\n\ | |
15209 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15210 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15211 | \"factorial.c:fact:the_top\".\n\ | |
15212 | \n\ | |
15213 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15214 | program. Example: To specify the fourth byte past the start function\n\ | |
15215 | \"main\", use \"*main + 4\".\n\ | |
15216 | \n\ | |
15217 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15218 | syntax to specify location parameters.\n\ | |
15219 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15220 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15221 | -function fact -label the_top\".\n\ |
15222 | \n\ | |
15223 | By default, a specified function is matched against the program's\n\ | |
15224 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15225 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15226 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15227 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15228 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15229 | |
4a64f543 MS |
15230 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15231 | commands. It is defined as a macro to prevent duplication. | |
15232 | COMMAND should be a string constant containing the name of the | |
15233 | command. */ | |
629500fa | 15234 | |
31e2b00f | 15235 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15236 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15237 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15238 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15239 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15240 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15241 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15242 | below.\n\ | |
15243 | \n\ | |
dc10affe PA |
15244 | With no LOCATION, uses current execution address of the selected\n\ |
15245 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15246 | \n\ |
15247 | THREADNUM is the number from \"info threads\".\n\ | |
15248 | CONDITION is a boolean expression.\n\ | |
629500fa | 15249 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15250 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15251 | conditions are different.\n\ | |
31e2b00f AS |
15252 | \n\ |
15253 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15254 | ||
44feb3ce TT |
15255 | /* List of subcommands for "catch". */ |
15256 | static struct cmd_list_element *catch_cmdlist; | |
15257 | ||
15258 | /* List of subcommands for "tcatch". */ | |
15259 | static struct cmd_list_element *tcatch_cmdlist; | |
15260 | ||
9ac4176b | 15261 | void |
a121b7c1 | 15262 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15263 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15264 | completer_ftype *completer, |
44feb3ce TT |
15265 | void *user_data_catch, |
15266 | void *user_data_tcatch) | |
15267 | { | |
15268 | struct cmd_list_element *command; | |
15269 | ||
0450cc4c | 15270 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15271 | &catch_cmdlist); |
15272 | set_cmd_sfunc (command, sfunc); | |
15273 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15274 | set_cmd_completer (command, completer); |
44feb3ce | 15275 | |
0450cc4c | 15276 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15277 | &tcatch_cmdlist); |
15278 | set_cmd_sfunc (command, sfunc); | |
15279 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15280 | set_cmd_completer (command, completer); |
44feb3ce TT |
15281 | } |
15282 | ||
6149aea9 | 15283 | static void |
981a3fb3 | 15284 | save_command (const char *arg, int from_tty) |
6149aea9 | 15285 | { |
3e43a32a MS |
15286 | printf_unfiltered (_("\"save\" must be followed by " |
15287 | "the name of a save subcommand.\n")); | |
635c7e8a | 15288 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15289 | } |
15290 | ||
84f4c1fe PM |
15291 | struct breakpoint * |
15292 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15293 | void *data) | |
15294 | { | |
35df4500 | 15295 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15296 | |
35df4500 | 15297 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15298 | { |
15299 | if ((*callback) (b, data)) | |
15300 | return b; | |
15301 | } | |
15302 | ||
15303 | return NULL; | |
15304 | } | |
15305 | ||
0574c78f GB |
15306 | /* Zero if any of the breakpoint's locations could be a location where |
15307 | functions have been inlined, nonzero otherwise. */ | |
15308 | ||
15309 | static int | |
15310 | is_non_inline_function (struct breakpoint *b) | |
15311 | { | |
15312 | /* The shared library event breakpoint is set on the address of a | |
15313 | non-inline function. */ | |
15314 | if (b->type == bp_shlib_event) | |
15315 | return 1; | |
15316 | ||
15317 | return 0; | |
15318 | } | |
15319 | ||
15320 | /* Nonzero if the specified PC cannot be a location where functions | |
15321 | have been inlined. */ | |
15322 | ||
15323 | int | |
accd0bcd | 15324 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15325 | const struct target_waitstatus *ws) |
0574c78f GB |
15326 | { |
15327 | struct breakpoint *b; | |
15328 | struct bp_location *bl; | |
15329 | ||
15330 | ALL_BREAKPOINTS (b) | |
15331 | { | |
15332 | if (!is_non_inline_function (b)) | |
15333 | continue; | |
15334 | ||
15335 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15336 | { | |
15337 | if (!bl->shlib_disabled | |
09ac7c10 | 15338 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15339 | return 1; |
15340 | } | |
15341 | } | |
15342 | ||
15343 | return 0; | |
15344 | } | |
15345 | ||
2f202fde JK |
15346 | /* Remove any references to OBJFILE which is going to be freed. */ |
15347 | ||
15348 | void | |
15349 | breakpoint_free_objfile (struct objfile *objfile) | |
15350 | { | |
15351 | struct bp_location **locp, *loc; | |
15352 | ||
15353 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15354 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15355 | loc->symtab = NULL; |
15356 | } | |
15357 | ||
2060206e PA |
15358 | void |
15359 | initialize_breakpoint_ops (void) | |
15360 | { | |
15361 | static int initialized = 0; | |
15362 | ||
15363 | struct breakpoint_ops *ops; | |
15364 | ||
15365 | if (initialized) | |
15366 | return; | |
15367 | initialized = 1; | |
15368 | ||
15369 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15370 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15371 | internal and momentary breakpoints, etc.). */ | |
15372 | ops = &bkpt_base_breakpoint_ops; | |
15373 | *ops = base_breakpoint_ops; | |
15374 | ops->re_set = bkpt_re_set; | |
15375 | ops->insert_location = bkpt_insert_location; | |
15376 | ops->remove_location = bkpt_remove_location; | |
15377 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15378 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15379 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15380 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15381 | |
15382 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15383 | ops = &bkpt_breakpoint_ops; | |
15384 | *ops = bkpt_base_breakpoint_ops; | |
15385 | ops->re_set = bkpt_re_set; | |
15386 | ops->resources_needed = bkpt_resources_needed; | |
15387 | ops->print_it = bkpt_print_it; | |
15388 | ops->print_mention = bkpt_print_mention; | |
15389 | ops->print_recreate = bkpt_print_recreate; | |
15390 | ||
15391 | /* Ranged breakpoints. */ | |
15392 | ops = &ranged_breakpoint_ops; | |
15393 | *ops = bkpt_breakpoint_ops; | |
15394 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15395 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15396 | ops->print_it = print_it_ranged_breakpoint; | |
15397 | ops->print_one = print_one_ranged_breakpoint; | |
15398 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15399 | ops->print_mention = print_mention_ranged_breakpoint; | |
15400 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15401 | ||
15402 | /* Internal breakpoints. */ | |
15403 | ops = &internal_breakpoint_ops; | |
15404 | *ops = bkpt_base_breakpoint_ops; | |
15405 | ops->re_set = internal_bkpt_re_set; | |
15406 | ops->check_status = internal_bkpt_check_status; | |
15407 | ops->print_it = internal_bkpt_print_it; | |
15408 | ops->print_mention = internal_bkpt_print_mention; | |
15409 | ||
15410 | /* Momentary breakpoints. */ | |
15411 | ops = &momentary_breakpoint_ops; | |
15412 | *ops = bkpt_base_breakpoint_ops; | |
15413 | ops->re_set = momentary_bkpt_re_set; | |
15414 | ops->check_status = momentary_bkpt_check_status; | |
15415 | ops->print_it = momentary_bkpt_print_it; | |
15416 | ops->print_mention = momentary_bkpt_print_mention; | |
15417 | ||
55aa24fb SDJ |
15418 | /* Probe breakpoints. */ |
15419 | ops = &bkpt_probe_breakpoint_ops; | |
15420 | *ops = bkpt_breakpoint_ops; | |
15421 | ops->insert_location = bkpt_probe_insert_location; | |
15422 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15423 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15424 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15425 | |
2060206e PA |
15426 | /* Watchpoints. */ |
15427 | ops = &watchpoint_breakpoint_ops; | |
15428 | *ops = base_breakpoint_ops; | |
15429 | ops->re_set = re_set_watchpoint; | |
15430 | ops->insert_location = insert_watchpoint; | |
15431 | ops->remove_location = remove_watchpoint; | |
15432 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15433 | ops->check_status = check_status_watchpoint; | |
15434 | ops->resources_needed = resources_needed_watchpoint; | |
15435 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15436 | ops->print_it = print_it_watchpoint; | |
15437 | ops->print_mention = print_mention_watchpoint; | |
15438 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15439 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15440 | |
15441 | /* Masked watchpoints. */ | |
15442 | ops = &masked_watchpoint_breakpoint_ops; | |
15443 | *ops = watchpoint_breakpoint_ops; | |
15444 | ops->insert_location = insert_masked_watchpoint; | |
15445 | ops->remove_location = remove_masked_watchpoint; | |
15446 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15447 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15448 | ops->print_it = print_it_masked_watchpoint; | |
15449 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15450 | ops->print_mention = print_mention_masked_watchpoint; | |
15451 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15452 | ||
15453 | /* Tracepoints. */ | |
15454 | ops = &tracepoint_breakpoint_ops; | |
15455 | *ops = base_breakpoint_ops; | |
15456 | ops->re_set = tracepoint_re_set; | |
15457 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15458 | ops->print_one_detail = tracepoint_print_one_detail; | |
15459 | ops->print_mention = tracepoint_print_mention; | |
15460 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15461 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15462 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15463 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15464 | |
55aa24fb SDJ |
15465 | /* Probe tracepoints. */ |
15466 | ops = &tracepoint_probe_breakpoint_ops; | |
15467 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15468 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15469 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15470 | |
983af33b SDJ |
15471 | /* Static tracepoints with marker (`-m'). */ |
15472 | ops = &strace_marker_breakpoint_ops; | |
15473 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15474 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15475 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15476 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15477 | |
15478 | /* Fork catchpoints. */ | |
15479 | ops = &catch_fork_breakpoint_ops; | |
15480 | *ops = base_breakpoint_ops; | |
15481 | ops->insert_location = insert_catch_fork; | |
15482 | ops->remove_location = remove_catch_fork; | |
15483 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15484 | ops->print_it = print_it_catch_fork; | |
15485 | ops->print_one = print_one_catch_fork; | |
15486 | ops->print_mention = print_mention_catch_fork; | |
15487 | ops->print_recreate = print_recreate_catch_fork; | |
15488 | ||
15489 | /* Vfork catchpoints. */ | |
15490 | ops = &catch_vfork_breakpoint_ops; | |
15491 | *ops = base_breakpoint_ops; | |
15492 | ops->insert_location = insert_catch_vfork; | |
15493 | ops->remove_location = remove_catch_vfork; | |
15494 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15495 | ops->print_it = print_it_catch_vfork; | |
15496 | ops->print_one = print_one_catch_vfork; | |
15497 | ops->print_mention = print_mention_catch_vfork; | |
15498 | ops->print_recreate = print_recreate_catch_vfork; | |
15499 | ||
15500 | /* Exec catchpoints. */ | |
15501 | ops = &catch_exec_breakpoint_ops; | |
15502 | *ops = base_breakpoint_ops; | |
2060206e PA |
15503 | ops->insert_location = insert_catch_exec; |
15504 | ops->remove_location = remove_catch_exec; | |
15505 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15506 | ops->print_it = print_it_catch_exec; | |
15507 | ops->print_one = print_one_catch_exec; | |
15508 | ops->print_mention = print_mention_catch_exec; | |
15509 | ops->print_recreate = print_recreate_catch_exec; | |
15510 | ||
edcc5120 TT |
15511 | /* Solib-related catchpoints. */ |
15512 | ops = &catch_solib_breakpoint_ops; | |
15513 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15514 | ops->insert_location = insert_catch_solib; |
15515 | ops->remove_location = remove_catch_solib; | |
15516 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15517 | ops->check_status = check_status_catch_solib; | |
15518 | ops->print_it = print_it_catch_solib; | |
15519 | ops->print_one = print_one_catch_solib; | |
15520 | ops->print_mention = print_mention_catch_solib; | |
15521 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15522 | |
15523 | ops = &dprintf_breakpoint_ops; | |
15524 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15525 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15526 | ops->resources_needed = bkpt_resources_needed; |
15527 | ops->print_it = bkpt_print_it; | |
15528 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15529 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15530 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15531 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15532 | } |
15533 | ||
8bfd80db YQ |
15534 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15535 | ||
15536 | static struct cmd_list_element *enablebreaklist = NULL; | |
15537 | ||
c906108c | 15538 | void |
fba45db2 | 15539 | _initialize_breakpoint (void) |
c906108c SS |
15540 | { |
15541 | struct cmd_list_element *c; | |
15542 | ||
2060206e PA |
15543 | initialize_breakpoint_ops (); |
15544 | ||
76727919 TT |
15545 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15546 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15547 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15548 | |
55aa24fb | 15549 | breakpoint_objfile_key |
43dce439 | 15550 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15551 | |
c906108c SS |
15552 | breakpoint_chain = 0; |
15553 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15554 | before a breakpoint is set. */ | |
15555 | breakpoint_count = 0; | |
15556 | ||
1042e4c0 SS |
15557 | tracepoint_count = 0; |
15558 | ||
1bedd215 AC |
15559 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15560 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15561 | Usage is `ignore N COUNT'.")); | |
c906108c | 15562 | |
1bedd215 | 15563 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15564 | Set commands to be executed when the given breakpoints are hit.\n\ |
15565 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15566 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15567 | (e.g. `5-7').\n\ | |
c906108c SS |
15568 | With no argument, the targeted breakpoint is the last one set.\n\ |
15569 | The commands themselves follow starting on the next line.\n\ | |
15570 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15571 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15572 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15573 | |
d55637df | 15574 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15575 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15576 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15577 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15578 | set_cmd_completer (c, condition_completer); |
c906108c | 15579 | |
1bedd215 | 15580 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15581 | Set a temporary breakpoint.\n\ |
c906108c SS |
15582 | Like \"break\" except the breakpoint is only temporary,\n\ |
15583 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15584 | by using \"enable delete\" on the breakpoint number.\n\ |
15585 | \n" | |
15586 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15587 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15588 | |
1bedd215 | 15589 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15590 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15591 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15592 | some target hardware may not have this support.\n\ |
15593 | \n" | |
15594 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15595 | set_cmd_completer (c, location_completer); |
c906108c | 15596 | |
1bedd215 | 15597 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15598 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15599 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15600 | so it will be deleted when hit.\n\ |
15601 | \n" | |
15602 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15603 | set_cmd_completer (c, location_completer); |
c906108c | 15604 | |
1bedd215 AC |
15605 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15606 | Enable some breakpoints.\n\ | |
c906108c SS |
15607 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15608 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15609 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15610 | With a subcommand you can enable temporarily."), |
c906108c | 15611 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15612 | |
15613 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15614 | ||
84951ab5 | 15615 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15616 | Enable some breakpoints.\n\ |
c906108c SS |
15617 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15618 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15619 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15620 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15621 | |
1a966eab AC |
15622 | add_cmd ("once", no_class, enable_once_command, _("\ |
15623 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15624 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15625 | &enablebreaklist); |
15626 | ||
1a966eab AC |
15627 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15628 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15629 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15630 | &enablebreaklist); |
15631 | ||
816338b5 SS |
15632 | add_cmd ("count", no_class, enable_count_command, _("\ |
15633 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15634 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15635 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15636 | &enablebreaklist); | |
15637 | ||
1a966eab AC |
15638 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15639 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15640 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15641 | &enablelist); |
15642 | ||
1a966eab AC |
15643 | add_cmd ("once", no_class, enable_once_command, _("\ |
15644 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15645 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15646 | &enablelist); |
15647 | ||
15648 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15649 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15650 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15651 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15652 | &enablelist); |
15653 | ||
1bedd215 AC |
15654 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15655 | Disable some breakpoints.\n\ | |
c906108c SS |
15656 | Arguments are breakpoint numbers with spaces in between.\n\ |
15657 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15658 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15659 | &disablelist, "disable ", 1, &cmdlist); |
15660 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15661 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15662 | |
1a966eab AC |
15663 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15664 | Disable some breakpoints.\n\ | |
c906108c SS |
15665 | Arguments are breakpoint numbers with spaces in between.\n\ |
15666 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15667 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15668 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15669 | &disablelist); |
15670 | ||
1bedd215 AC |
15671 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15672 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15673 | Arguments are breakpoint numbers with spaces in between.\n\ |
15674 | To delete all breakpoints, give no argument.\n\ | |
15675 | \n\ | |
15676 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15677 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15678 | &deletelist, "delete ", 1, &cmdlist); |
15679 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15680 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15681 | |
1a966eab AC |
15682 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15683 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15684 | Arguments are breakpoint numbers with spaces in between.\n\ |
15685 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15686 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15687 | &deletelist); |
15688 | ||
1bedd215 | 15689 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15690 | Clear breakpoint at specified location.\n\ |
15691 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15692 | \n\ |
15693 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15694 | is executing in.\n" |
15695 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15696 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15697 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15698 | |
1bedd215 | 15699 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15700 | Set breakpoint at specified location.\n" |
31e2b00f | 15701 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15702 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15703 | |
c906108c SS |
15704 | add_com_alias ("b", "break", class_run, 1); |
15705 | add_com_alias ("br", "break", class_run, 1); | |
15706 | add_com_alias ("bre", "break", class_run, 1); | |
15707 | add_com_alias ("brea", "break", class_run, 1); | |
15708 | ||
c906108c SS |
15709 | if (dbx_commands) |
15710 | { | |
1bedd215 AC |
15711 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15712 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15713 | &stoplist, "stop ", 1, &cmdlist); |
15714 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15715 | _("Break in function or address."), &stoplist); |
c5aa993b | 15716 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15717 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15718 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15719 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15720 | The \"Type\" column indicates one of:\n\ |
15721 | \tbreakpoint - normal breakpoint\n\ | |
15722 | \twatchpoint - watchpoint\n\ | |
15723 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15724 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15725 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15726 | address and file/line number respectively.\n\ |
15727 | \n\ | |
15728 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15729 | are set to the address of the last breakpoint listed unless the command\n\ |
15730 | is prefixed with \"server \".\n\n\ | |
c906108c | 15731 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15732 | breakpoint set.")); |
c906108c SS |
15733 | } |
15734 | ||
11db9430 | 15735 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15736 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15737 | The \"Type\" column indicates one of:\n\ |
15738 | \tbreakpoint - normal breakpoint\n\ | |
15739 | \twatchpoint - watchpoint\n\ | |
15740 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15741 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15742 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15743 | address and file/line number respectively.\n\ |
15744 | \n\ | |
15745 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15746 | are set to the address of the last breakpoint listed unless the command\n\ |
15747 | is prefixed with \"server \".\n\n\ | |
c906108c | 15748 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15749 | breakpoint set.")); |
c906108c | 15750 | |
6b04bdb7 MS |
15751 | add_info_alias ("b", "breakpoints", 1); |
15752 | ||
1a966eab AC |
15753 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15754 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15755 | The \"Type\" column indicates one of:\n\ |
15756 | \tbreakpoint - normal breakpoint\n\ | |
15757 | \twatchpoint - watchpoint\n\ | |
15758 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15759 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15760 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15761 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15762 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15763 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15764 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15765 | address and file/line number respectively.\n\ |
15766 | \n\ | |
15767 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15768 | are set to the address of the last breakpoint listed unless the command\n\ |
15769 | is prefixed with \"server \".\n\n\ | |
c906108c | 15770 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15771 | breakpoint set."), |
c906108c SS |
15772 | &maintenanceinfolist); |
15773 | ||
44feb3ce TT |
15774 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15775 | Set catchpoints to catch events."), | |
15776 | &catch_cmdlist, "catch ", | |
15777 | 0/*allow-unknown*/, &cmdlist); | |
15778 | ||
15779 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15780 | Set temporary catchpoints to catch events."), | |
15781 | &tcatch_cmdlist, "tcatch ", | |
15782 | 0/*allow-unknown*/, &cmdlist); | |
15783 | ||
44feb3ce TT |
15784 | add_catch_command ("fork", _("Catch calls to fork."), |
15785 | catch_fork_command_1, | |
a96d9b2e | 15786 | NULL, |
44feb3ce TT |
15787 | (void *) (uintptr_t) catch_fork_permanent, |
15788 | (void *) (uintptr_t) catch_fork_temporary); | |
15789 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15790 | catch_fork_command_1, | |
a96d9b2e | 15791 | NULL, |
44feb3ce TT |
15792 | (void *) (uintptr_t) catch_vfork_permanent, |
15793 | (void *) (uintptr_t) catch_vfork_temporary); | |
15794 | add_catch_command ("exec", _("Catch calls to exec."), | |
15795 | catch_exec_command_1, | |
a96d9b2e SDJ |
15796 | NULL, |
15797 | CATCH_PERMANENT, | |
15798 | CATCH_TEMPORARY); | |
edcc5120 TT |
15799 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15800 | Usage: catch load [REGEX]\n\ | |
15801 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15802 | catch_load_command_1, | |
15803 | NULL, | |
15804 | CATCH_PERMANENT, | |
15805 | CATCH_TEMPORARY); | |
15806 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15807 | Usage: catch unload [REGEX]\n\ | |
15808 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15809 | catch_unload_command_1, | |
15810 | NULL, | |
15811 | CATCH_PERMANENT, | |
15812 | CATCH_TEMPORARY); | |
c5aa993b | 15813 | |
1bedd215 AC |
15814 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15815 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15816 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15817 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15818 | an expression changes.\n\ |
15819 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15820 | the memory to which it refers.")); | |
65d12d83 | 15821 | set_cmd_completer (c, expression_completer); |
c906108c | 15822 | |
1bedd215 AC |
15823 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15824 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15825 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15826 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15827 | an expression is read.\n\ |
15828 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15829 | the memory to which it refers.")); | |
65d12d83 | 15830 | set_cmd_completer (c, expression_completer); |
c906108c | 15831 | |
1bedd215 AC |
15832 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15833 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15834 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15835 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15836 | an expression is either read or written.\n\ |
15837 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15838 | the memory to which it refers.")); | |
65d12d83 | 15839 | set_cmd_completer (c, expression_completer); |
c906108c | 15840 | |
11db9430 | 15841 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15842 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15843 | |
920d2a44 AC |
15844 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15845 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15846 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15847 | &can_use_hw_watchpoints, _("\ | |
15848 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15849 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15850 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15851 | such is available. (However, any hardware watchpoints that were\n\ | |
15852 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15853 | hardware.)"), |
15854 | NULL, | |
920d2a44 | 15855 | show_can_use_hw_watchpoints, |
85c07804 | 15856 | &setlist, &showlist); |
c906108c SS |
15857 | |
15858 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15859 | |
1042e4c0 SS |
15860 | /* Tracepoint manipulation commands. */ |
15861 | ||
15862 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15863 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15864 | \n" |
15865 | BREAK_ARGS_HELP ("trace") "\n\ | |
15866 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15867 | set_cmd_completer (c, location_completer); | |
15868 | ||
15869 | add_com_alias ("tp", "trace", class_alias, 0); | |
15870 | add_com_alias ("tr", "trace", class_alias, 1); | |
15871 | add_com_alias ("tra", "trace", class_alias, 1); | |
15872 | add_com_alias ("trac", "trace", class_alias, 1); | |
15873 | ||
7a697b8d | 15874 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15875 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15876 | \n" |
15877 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15878 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15879 | set_cmd_completer (c, location_completer); | |
15880 | ||
0fb4aa4b | 15881 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15882 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15883 | \n\ |
15884 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15885 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15886 | or -m MARKER_ID.\n\n\ | |
15887 | If a marker id is specified, probe the marker with that name. With\n\ | |
15888 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15889 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15890 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15891 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15892 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15893 | \n\ | |
15894 | CONDITION is a boolean expression.\n\ | |
629500fa | 15895 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15896 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15897 | conditions are different.\n\ | |
0fb4aa4b PA |
15898 | \n\ |
15899 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15900 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15901 | set_cmd_completer (c, location_completer); | |
15902 | ||
11db9430 | 15903 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15904 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15905 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15906 | last tracepoint set.")); | |
15907 | ||
15908 | add_info_alias ("tp", "tracepoints", 1); | |
15909 | ||
15910 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15911 | Delete specified tracepoints.\n\ | |
15912 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15913 | No argument means delete all tracepoints."), | |
15914 | &deletelist); | |
7e20dfcd | 15915 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15916 | |
15917 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15918 | Disable specified tracepoints.\n\ | |
15919 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15920 | No argument means disable all tracepoints."), | |
15921 | &disablelist); | |
15922 | deprecate_cmd (c, "disable"); | |
15923 | ||
15924 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15925 | Enable specified tracepoints.\n\ | |
15926 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15927 | No argument means enable all tracepoints."), | |
15928 | &enablelist); | |
15929 | deprecate_cmd (c, "enable"); | |
15930 | ||
15931 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15932 | Set the passcount for a tracepoint.\n\ | |
15933 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15934 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15935 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15936 | ||
6149aea9 PA |
15937 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15938 | _("Save breakpoint definitions as a script."), | |
15939 | &save_cmdlist, "save ", | |
15940 | 0/*allow-unknown*/, &cmdlist); | |
15941 | ||
15942 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15943 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15944 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15945 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15946 | session to restore them."), | |
15947 | &save_cmdlist); | |
15948 | set_cmd_completer (c, filename_completer); | |
15949 | ||
15950 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15951 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15952 | Use the 'source' command in another debug session to restore them."), |
15953 | &save_cmdlist); | |
1042e4c0 SS |
15954 | set_cmd_completer (c, filename_completer); |
15955 | ||
6149aea9 PA |
15956 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15957 | deprecate_cmd (c, "save tracepoints"); | |
15958 | ||
1bedd215 | 15959 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15960 | Breakpoint specific settings\n\ |
15961 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15962 | pending breakpoint behavior"), |
fa8d40ab JJ |
15963 | &breakpoint_set_cmdlist, "set breakpoint ", |
15964 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15965 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15966 | Breakpoint specific settings\n\ |
15967 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15968 | pending breakpoint behavior"), |
fa8d40ab JJ |
15969 | &breakpoint_show_cmdlist, "show breakpoint ", |
15970 | 0/*allow-unknown*/, &showlist); | |
15971 | ||
7915a72c AC |
15972 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15973 | &pending_break_support, _("\ | |
15974 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15975 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15976 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15977 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15978 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15979 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15980 | NULL, |
920d2a44 | 15981 | show_pending_break_support, |
6e1d7d6c AC |
15982 | &breakpoint_set_cmdlist, |
15983 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15984 | |
15985 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15986 | |
15987 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15988 | &automatic_hardware_breakpoints, _("\ | |
15989 | Set automatic usage of hardware breakpoints."), _("\ | |
15990 | Show automatic usage of hardware breakpoints."), _("\ | |
15991 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15992 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15993 | a warning will be emitted for such breakpoints."), | |
15994 | NULL, | |
15995 | show_automatic_hardware_breakpoints, | |
15996 | &breakpoint_set_cmdlist, | |
15997 | &breakpoint_show_cmdlist); | |
74960c60 | 15998 | |
a25a5a45 PA |
15999 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16000 | &always_inserted_mode, _("\ | |
74960c60 VP |
16001 | Set mode for inserting breakpoints."), _("\ |
16002 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16003 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16004 | they're created, kept inserted even when execution stops, and removed\n\ | |
16005 | only when the user deletes them. When this mode is off (the default),\n\ | |
16006 | breakpoints are inserted only when execution continues, and removed\n\ | |
16007 | when execution stops."), | |
72d0e2c5 YQ |
16008 | NULL, |
16009 | &show_always_inserted_mode, | |
16010 | &breakpoint_set_cmdlist, | |
16011 | &breakpoint_show_cmdlist); | |
f1310107 | 16012 | |
b775012e LM |
16013 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16014 | condition_evaluation_enums, | |
16015 | &condition_evaluation_mode_1, _("\ | |
16016 | Set mode of breakpoint condition evaluation."), _("\ | |
16017 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16018 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16019 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16020 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16021 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16022 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16023 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16024 | be set to \"gdb\""), | |
16025 | &set_condition_evaluation_mode, | |
16026 | &show_condition_evaluation_mode, | |
16027 | &breakpoint_set_cmdlist, | |
16028 | &breakpoint_show_cmdlist); | |
16029 | ||
f1310107 TJB |
16030 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16031 | Set a breakpoint for an address range.\n\ | |
16032 | break-range START-LOCATION, END-LOCATION\n\ | |
16033 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16034 | LINENUM, for that line in the current file,\n\ | |
16035 | FILE:LINENUM, for that line in that file,\n\ | |
16036 | +OFFSET, for that number of lines after the current line\n\ | |
16037 | or the start of the range\n\ | |
16038 | FUNCTION, for the first line in that function,\n\ | |
16039 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16040 | *ADDRESS, for the instruction at that address.\n\ | |
16041 | \n\ | |
16042 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16043 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16044 | range (including START-LOCATION and END-LOCATION).")); | |
16045 | ||
e7e0cddf | 16046 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16047 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16048 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16049 | location may be a linespec, explicit, or address location.\n" |
16050 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16051 | set_cmd_completer (c, location_completer); |
16052 | ||
16053 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16054 | dprintf_style_enums, &dprintf_style, _("\ | |
16055 | Set the style of usage for dynamic printf."), _("\ | |
16056 | Show the style of usage for dynamic printf."), _("\ | |
16057 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16058 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16059 | console, as with the \"printf\" command.\n\ | |
16060 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16061 | program; by default printf(), but you can choose a different function or\n\ | |
16062 | output stream by setting dprintf-function and dprintf-channel."), | |
16063 | update_dprintf_commands, NULL, | |
16064 | &setlist, &showlist); | |
16065 | ||
16066 | dprintf_function = xstrdup ("printf"); | |
16067 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16068 | &dprintf_function, _("\ | |
16069 | Set the function to use for dynamic printf"), _("\ | |
16070 | Show the function to use for dynamic printf"), NULL, | |
16071 | update_dprintf_commands, NULL, | |
16072 | &setlist, &showlist); | |
16073 | ||
16074 | dprintf_channel = xstrdup (""); | |
16075 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16076 | &dprintf_channel, _("\ | |
16077 | Set the channel to use for dynamic printf"), _("\ | |
16078 | Show the channel to use for dynamic printf"), NULL, | |
16079 | update_dprintf_commands, NULL, | |
16080 | &setlist, &showlist); | |
16081 | ||
d3ce09f5 SS |
16082 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16083 | &disconnected_dprintf, _("\ | |
16084 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16085 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16086 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16087 | even if GDB disconnects or detaches from the target."), | |
16088 | NULL, | |
16089 | NULL, | |
16090 | &setlist, &showlist); | |
16091 | ||
16092 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16093 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16094 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16095 | ||
765dc015 | 16096 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16097 | |
76727919 TT |
16098 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16099 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16100 | } |