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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); |
f6ac5f3d | 3496 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, target_stack); |
06edf0c0 PA |
3497 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3498 | &internal_breakpoint_ops); | |
67994074 KS |
3499 | initialize_explicit_location (&explicit_loc); |
3500 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3501 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3502 | b->enable_state = bp_disabled; |
186c406b | 3503 | } |
186c406b TT |
3504 | } |
3505 | ||
9ef9e6a6 KS |
3506 | /* Does B have a location spec? */ |
3507 | ||
3508 | static int | |
3509 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3510 | { | |
d28cd78a | 3511 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3512 | } |
3513 | ||
c906108c | 3514 | void |
fba45db2 | 3515 | update_breakpoints_after_exec (void) |
c906108c | 3516 | { |
35df4500 | 3517 | struct breakpoint *b, *b_tmp; |
876fa593 | 3518 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3519 | |
25b22b0a PA |
3520 | /* We're about to delete breakpoints from GDB's lists. If the |
3521 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3522 | writing the breakpoints' "shadow contents" back into memory. The | |
3523 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3524 | do that. Instead, the target is responsible from marking | |
3525 | breakpoints out as soon as it detects an exec. We don't do that | |
3526 | here instead, because there may be other attempts to delete | |
3527 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3528 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3529 | if (bploc->pspace == current_program_space) |
3530 | gdb_assert (!bploc->inserted); | |
c906108c | 3531 | |
35df4500 | 3532 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3533 | { |
6c95b8df PA |
3534 | if (b->pspace != current_program_space) |
3535 | continue; | |
3536 | ||
4a64f543 | 3537 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3538 | if (b->type == bp_shlib_event) |
3539 | { | |
3540 | delete_breakpoint (b); | |
3541 | continue; | |
3542 | } | |
c906108c | 3543 | |
4a64f543 | 3544 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3545 | if (b->type == bp_jit_event) |
3546 | { | |
3547 | delete_breakpoint (b); | |
3548 | continue; | |
3549 | } | |
3550 | ||
1900040c | 3551 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3552 | as must overlay event and longjmp master breakpoints. */ |
3553 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3554 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3555 | || b->type == bp_exception_master) | |
c4093a6a JM |
3556 | { |
3557 | delete_breakpoint (b); | |
3558 | continue; | |
3559 | } | |
3560 | ||
4a64f543 | 3561 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3562 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3563 | { |
3564 | delete_breakpoint (b); | |
3565 | continue; | |
3566 | } | |
3567 | ||
7c16b83e PA |
3568 | /* Just like single-step breakpoints. */ |
3569 | if (b->type == bp_single_step) | |
3570 | { | |
3571 | delete_breakpoint (b); | |
3572 | continue; | |
3573 | } | |
3574 | ||
611c83ae PA |
3575 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3576 | after an exec. */ | |
186c406b | 3577 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3578 | || b->type == bp_longjmp_call_dummy |
186c406b | 3579 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3580 | { |
3581 | delete_breakpoint (b); | |
3582 | continue; | |
3583 | } | |
3584 | ||
ce78b96d JB |
3585 | if (b->type == bp_catchpoint) |
3586 | { | |
3587 | /* For now, none of the bp_catchpoint breakpoints need to | |
3588 | do anything at this point. In the future, if some of | |
3589 | the catchpoints need to something, we will need to add | |
3590 | a new method, and call this method from here. */ | |
3591 | continue; | |
3592 | } | |
3593 | ||
c5aa993b JM |
3594 | /* bp_finish is a special case. The only way we ought to be able |
3595 | to see one of these when an exec() has happened, is if the user | |
3596 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3597 | carries them to the call-site of the current callee, by setting | |
3598 | a temporary bp there and resuming. But in this case, the finish | |
3599 | will carry them entirely through the vfork & exec. | |
3600 | ||
3601 | We don't want to allow a bp_finish to remain inserted now. But | |
3602 | we can't safely delete it, 'cause finish_command has a handle to | |
3603 | the bp on a bpstat, and will later want to delete it. There's a | |
3604 | chance (and I've seen it happen) that if we delete the bp_finish | |
3605 | here, that its storage will get reused by the time finish_command | |
3606 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3607 | We really must allow finish_command to delete a bp_finish. | |
3608 | ||
e5dd4106 | 3609 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3610 | it's safe to delete something others may have handles to?" |
3611 | problem, what we'll do here is just uninsert the bp_finish, and | |
3612 | let finish_command delete it. | |
3613 | ||
3614 | (We know the bp_finish is "doomed" in the sense that it's | |
3615 | momentary, and will be deleted as soon as finish_command sees | |
3616 | the inferior stopped. So it doesn't matter that the bp's | |
3617 | address is probably bogus in the new a.out, unlike e.g., the | |
3618 | solib breakpoints.) */ | |
c5aa993b | 3619 | |
c5aa993b JM |
3620 | if (b->type == bp_finish) |
3621 | { | |
3622 | continue; | |
3623 | } | |
3624 | ||
3625 | /* Without a symbolic address, we have little hope of the | |
3626 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3627 | a.out. */ |
9ef9e6a6 | 3628 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3629 | { |
3630 | delete_breakpoint (b); | |
3631 | continue; | |
3632 | } | |
c5aa993b | 3633 | } |
c906108c SS |
3634 | } |
3635 | ||
3636 | int | |
d80ee84f | 3637 | detach_breakpoints (ptid_t ptid) |
c906108c | 3638 | { |
35df4500 | 3639 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3640 | int val = 0; |
2989a365 | 3641 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3642 | struct inferior *inf = current_inferior (); |
c5aa993b | 3643 | |
dfd4cc63 | 3644 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3645 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3646 | |
6c95b8df | 3647 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3648 | inferior_ptid = ptid; |
35df4500 | 3649 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3650 | { |
35df4500 | 3651 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3652 | continue; |
3653 | ||
bd9673a4 PW |
3654 | /* This function must physically remove breakpoints locations |
3655 | from the specified ptid, without modifying the breakpoint | |
3656 | package's state. Locations of type bp_loc_other are only | |
3657 | maintained at GDB side. So, there is no need to remove | |
3658 | these bp_loc_other locations. Moreover, removing these | |
3659 | would modify the breakpoint package's state. */ | |
3660 | if (bl->loc_type == bp_loc_other) | |
3661 | continue; | |
3662 | ||
35df4500 | 3663 | if (bl->inserted) |
b2b6a7da | 3664 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3665 | } |
d03285ec | 3666 | |
3a1bae8e | 3667 | return val; |
c906108c SS |
3668 | } |
3669 | ||
35df4500 | 3670 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3671 | Note that this is used to detach breakpoints from a child fork. |
3672 | When we get here, the child isn't in the inferior list, and neither | |
3673 | do we have objects to represent its address space --- we should | |
35df4500 | 3674 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3675 | |
c906108c | 3676 | static int |
b2b6a7da | 3677 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3678 | { |
3679 | int val; | |
c5aa993b | 3680 | |
35df4500 TJB |
3681 | /* BL is never in moribund_locations by our callers. */ |
3682 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3683 | |
74960c60 VP |
3684 | /* The type of none suggests that owner is actually deleted. |
3685 | This should not ever happen. */ | |
35df4500 | 3686 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3687 | |
35df4500 TJB |
3688 | if (bl->loc_type == bp_loc_software_breakpoint |
3689 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3690 | { |
c02f5703 MS |
3691 | /* "Normal" instruction breakpoint: either the standard |
3692 | trap-instruction bp (bp_breakpoint), or a | |
3693 | bp_hardware_breakpoint. */ | |
3694 | ||
3695 | /* First check to see if we have to handle an overlay. */ | |
3696 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3697 | || bl->section == NULL |
3698 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3699 | { |
3700 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3701 | |
3702 | /* If we're trying to uninsert a memory breakpoint that we | |
3703 | know is set in a dynamic object that is marked | |
3704 | shlib_disabled, then either the dynamic object was | |
3705 | removed with "remove-symbol-file" or with | |
3706 | "nosharedlibrary". In the former case, we don't know | |
3707 | whether another dynamic object might have loaded over the | |
3708 | breakpoint's address -- the user might well let us know | |
3709 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3710 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3711 | list of dynamically loaded objects). If we have the |
3712 | breakpoint's shadow memory, that is, this is a software | |
3713 | breakpoint managed by GDB, check whether the breakpoint | |
3714 | is still inserted in memory, to avoid overwriting wrong | |
3715 | code with stale saved shadow contents. Note that HW | |
3716 | breakpoints don't have shadow memory, as they're | |
3717 | implemented using a mechanism that is not dependent on | |
3718 | being able to modify the target's memory, and as such | |
3719 | they should always be removed. */ | |
3720 | if (bl->shlib_disabled | |
3721 | && bl->target_info.shadow_len != 0 | |
3722 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3723 | val = 0; | |
3724 | else | |
73971819 | 3725 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3726 | } |
c906108c SS |
3727 | else |
3728 | { | |
4a64f543 | 3729 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3730 | Did we set a breakpoint at the LMA? */ |
3731 | if (!overlay_events_enabled) | |
3732 | { | |
3733 | /* Yes -- overlay event support is not active, so we | |
3734 | should have set a breakpoint at the LMA. Remove it. | |
3735 | */ | |
c02f5703 MS |
3736 | /* Ignore any failures: if the LMA is in ROM, we will |
3737 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3738 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3739 | target_remove_hw_breakpoint (bl->gdbarch, | |
3740 | &bl->overlay_target_info); | |
c02f5703 | 3741 | else |
35df4500 | 3742 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3743 | &bl->overlay_target_info, |
3744 | reason); | |
c02f5703 MS |
3745 | } |
3746 | /* Did we set a breakpoint at the VMA? | |
3747 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3748 | if (bl->inserted) |
c906108c | 3749 | { |
c02f5703 MS |
3750 | /* Yes -- remove it. Previously we did not bother to |
3751 | remove the breakpoint if the section had been | |
3752 | unmapped, but let's not rely on that being safe. We | |
3753 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3754 | |
3755 | /* However, we should remove *software* breakpoints only | |
3756 | if the section is still mapped, or else we overwrite | |
3757 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3758 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3759 | || section_is_mapped (bl->section)) | |
73971819 | 3760 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3761 | else |
3762 | val = 0; | |
c906108c | 3763 | } |
c02f5703 MS |
3764 | else |
3765 | { | |
3766 | /* No -- not inserted, so no need to remove. No error. */ | |
3767 | val = 0; | |
3768 | } | |
c906108c | 3769 | } |
879d1e6b | 3770 | |
08351840 PA |
3771 | /* In some cases, we might not be able to remove a breakpoint in |
3772 | a shared library that has already been removed, but we have | |
3773 | not yet processed the shlib unload event. Similarly for an | |
3774 | unloaded add-symbol-file object - the user might not yet have | |
3775 | had the chance to remove-symbol-file it. shlib_disabled will | |
3776 | be set if the library/object has already been removed, but | |
3777 | the breakpoint hasn't been uninserted yet, e.g., after | |
3778 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3779 | always-inserted mode. */ | |
076855f9 | 3780 | if (val |
08351840 PA |
3781 | && (bl->loc_type == bp_loc_software_breakpoint |
3782 | && (bl->shlib_disabled | |
3783 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3784 | || shared_objfile_contains_address_p (bl->pspace, |
3785 | bl->address)))) | |
879d1e6b UW |
3786 | val = 0; |
3787 | ||
c906108c SS |
3788 | if (val) |
3789 | return val; | |
b2b6a7da | 3790 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3791 | } |
35df4500 | 3792 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3793 | { |
77b06cd7 TJB |
3794 | gdb_assert (bl->owner->ops != NULL |
3795 | && bl->owner->ops->remove_location != NULL); | |
3796 | ||
b2b6a7da | 3797 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3798 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3799 | |
c906108c | 3800 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3801 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3802 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3803 | bl->owner->number); |
c906108c | 3804 | } |
35df4500 TJB |
3805 | else if (bl->owner->type == bp_catchpoint |
3806 | && breakpoint_enabled (bl->owner) | |
3807 | && !bl->duplicate) | |
ce78b96d | 3808 | { |
77b06cd7 TJB |
3809 | gdb_assert (bl->owner->ops != NULL |
3810 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3811 | |
73971819 | 3812 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3813 | if (val) |
3814 | return val; | |
77b06cd7 | 3815 | |
b2b6a7da | 3816 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3817 | } |
c906108c SS |
3818 | |
3819 | return 0; | |
3820 | } | |
3821 | ||
6c95b8df | 3822 | static int |
834c0d03 | 3823 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3824 | { |
35df4500 TJB |
3825 | /* BL is never in moribund_locations by our callers. */ |
3826 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3827 | |
6c95b8df PA |
3828 | /* The type of none suggests that owner is actually deleted. |
3829 | This should not ever happen. */ | |
35df4500 | 3830 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3831 | |
5ed8105e | 3832 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3833 | |
35df4500 | 3834 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3835 | |
5ed8105e | 3836 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3837 | } |
3838 | ||
c906108c SS |
3839 | /* Clear the "inserted" flag in all breakpoints. */ |
3840 | ||
25b22b0a | 3841 | void |
fba45db2 | 3842 | mark_breakpoints_out (void) |
c906108c | 3843 | { |
35df4500 | 3844 | struct bp_location *bl, **blp_tmp; |
c906108c | 3845 | |
35df4500 | 3846 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3847 | if (bl->pspace == current_program_space) |
35df4500 | 3848 | bl->inserted = 0; |
c906108c SS |
3849 | } |
3850 | ||
53a5351d JM |
3851 | /* Clear the "inserted" flag in all breakpoints and delete any |
3852 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3853 | |
3854 | Plus other such housekeeping that has to be done for breakpoints | |
3855 | between runs. | |
3856 | ||
53a5351d JM |
3857 | Note: this function gets called at the end of a run (by |
3858 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3859 | init_wait_for_inferior). */ |
c906108c SS |
3860 | |
3861 | ||
3862 | ||
3863 | void | |
fba45db2 | 3864 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3865 | { |
35df4500 | 3866 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3867 | struct bp_location *bl; |
1c5cfe86 | 3868 | int ix; |
6c95b8df | 3869 | struct program_space *pspace = current_program_space; |
c906108c | 3870 | |
50c71eaf PA |
3871 | /* If breakpoint locations are shared across processes, then there's |
3872 | nothing to do. */ | |
f5656ead | 3873 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3874 | return; |
3875 | ||
1a853c52 | 3876 | mark_breakpoints_out (); |
075f6582 | 3877 | |
35df4500 | 3878 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3879 | { |
6c95b8df PA |
3880 | if (b->loc && b->loc->pspace != pspace) |
3881 | continue; | |
3882 | ||
c5aa993b JM |
3883 | switch (b->type) |
3884 | { | |
3885 | case bp_call_dummy: | |
e2e4d78b | 3886 | case bp_longjmp_call_dummy: |
c906108c | 3887 | |
c5aa993b | 3888 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3889 | cause problems when the inferior is rerun, so we better get |
3890 | rid of it. */ | |
3891 | ||
3892 | case bp_watchpoint_scope: | |
3893 | ||
3894 | /* Also get rid of scope breakpoints. */ | |
3895 | ||
3896 | case bp_shlib_event: | |
3897 | ||
3898 | /* Also remove solib event breakpoints. Their addresses may | |
3899 | have changed since the last time we ran the program. | |
3900 | Actually we may now be debugging against different target; | |
3901 | and so the solib backend that installed this breakpoint may | |
3902 | not be used in by the target. E.g., | |
3903 | ||
3904 | (gdb) file prog-linux | |
3905 | (gdb) run # native linux target | |
3906 | ... | |
3907 | (gdb) kill | |
3908 | (gdb) file prog-win.exe | |
3909 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3910 | */ | |
c906108c | 3911 | |
f59f708a PA |
3912 | case bp_step_resume: |
3913 | ||
3914 | /* Also remove step-resume breakpoints. */ | |
3915 | ||
7c16b83e PA |
3916 | case bp_single_step: |
3917 | ||
3918 | /* Also remove single-step breakpoints. */ | |
3919 | ||
c5aa993b JM |
3920 | delete_breakpoint (b); |
3921 | break; | |
c906108c | 3922 | |
c5aa993b JM |
3923 | case bp_watchpoint: |
3924 | case bp_hardware_watchpoint: | |
3925 | case bp_read_watchpoint: | |
3926 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3927 | { |
3928 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3929 | |
3a5c3e22 PA |
3930 | /* Likewise for watchpoints on local expressions. */ |
3931 | if (w->exp_valid_block != NULL) | |
3932 | delete_breakpoint (b); | |
63000888 | 3933 | else |
3a5c3e22 | 3934 | { |
63000888 PA |
3935 | /* Get rid of existing locations, which are no longer |
3936 | valid. New ones will be created in | |
3937 | update_watchpoint, when the inferior is restarted. | |
3938 | The next update_global_location_list call will | |
3939 | garbage collect them. */ | |
3940 | b->loc = NULL; | |
3941 | ||
3942 | if (context == inf_starting) | |
3943 | { | |
3944 | /* Reset val field to force reread of starting value in | |
3945 | insert_breakpoints. */ | |
850645cf | 3946 | w->val.reset (nullptr); |
63000888 PA |
3947 | w->val_valid = 0; |
3948 | } | |
3949 | } | |
3a5c3e22 | 3950 | } |
c5aa993b JM |
3951 | break; |
3952 | default: | |
c5aa993b JM |
3953 | break; |
3954 | } | |
3955 | } | |
1c5cfe86 PA |
3956 | |
3957 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3958 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3959 | decref_bp_location (&bl); | |
1c5cfe86 | 3960 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3961 | } |
3962 | ||
6c95b8df PA |
3963 | /* These functions concern about actual breakpoints inserted in the |
3964 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3965 | we need to hop over the bkpt --- so we check for address space | |
3966 | match, not program space. */ | |
3967 | ||
c2c6d25f JM |
3968 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3969 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3970 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3971 | permanent breakpoint. | |
3972 | - When continuing from a location with an ordinary breakpoint, we | |
3973 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3974 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3975 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3976 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3977 | |
c2c6d25f | 3978 | enum breakpoint_here |
accd0bcd | 3979 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3980 | { |
35df4500 | 3981 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3982 | int any_breakpoint_here = 0; |
c906108c | 3983 | |
35df4500 | 3984 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3985 | { |
35df4500 TJB |
3986 | if (bl->loc_type != bp_loc_software_breakpoint |
3987 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3988 | continue; |
3989 | ||
f1310107 | 3990 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3991 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3992 | || bl->permanent) |
f1310107 | 3993 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3994 | { |
3995 | if (overlay_debugging | |
35df4500 TJB |
3996 | && section_is_overlay (bl->section) |
3997 | && !section_is_mapped (bl->section)) | |
075f6582 | 3998 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3999 | else if (bl->permanent) |
075f6582 DJ |
4000 | return permanent_breakpoint_here; |
4001 | else | |
4002 | any_breakpoint_here = 1; | |
4003 | } | |
4004 | } | |
c906108c | 4005 | |
f486487f | 4006 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4007 | } |
4008 | ||
d35ae833 PA |
4009 | /* See breakpoint.h. */ |
4010 | ||
4011 | int | |
accd0bcd | 4012 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4013 | CORE_ADDR addr, ULONGEST len) |
4014 | { | |
4015 | struct bp_location *bl, **blp_tmp; | |
4016 | ||
4017 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4018 | { | |
4019 | if (bl->loc_type != bp_loc_software_breakpoint | |
4020 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4021 | continue; | |
4022 | ||
4023 | if ((breakpoint_enabled (bl->owner) | |
4024 | || bl->permanent) | |
4025 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4026 | addr, len)) | |
4027 | { | |
4028 | if (overlay_debugging | |
4029 | && section_is_overlay (bl->section) | |
4030 | && !section_is_mapped (bl->section)) | |
4031 | { | |
4032 | /* Unmapped overlay -- can't be a match. */ | |
4033 | continue; | |
4034 | } | |
4035 | ||
4036 | return 1; | |
4037 | } | |
4038 | } | |
4039 | ||
4040 | return 0; | |
4041 | } | |
4042 | ||
1c5cfe86 PA |
4043 | /* Return true if there's a moribund breakpoint at PC. */ |
4044 | ||
4045 | int | |
accd0bcd | 4046 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4047 | { |
4048 | struct bp_location *loc; | |
4049 | int ix; | |
4050 | ||
4051 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4052 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4053 | return 1; |
4054 | ||
4055 | return 0; | |
4056 | } | |
c2c6d25f | 4057 | |
f7ce857f PA |
4058 | /* Returns non-zero iff BL is inserted at PC, in address space |
4059 | ASPACE. */ | |
4060 | ||
4061 | static int | |
4062 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4063 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4064 | { |
4065 | if (bl->inserted | |
4066 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4067 | aspace, pc)) | |
4068 | { | |
4069 | if (overlay_debugging | |
4070 | && section_is_overlay (bl->section) | |
4071 | && !section_is_mapped (bl->section)) | |
4072 | return 0; /* unmapped overlay -- can't be a match */ | |
4073 | else | |
4074 | return 1; | |
4075 | } | |
4076 | return 0; | |
4077 | } | |
4078 | ||
a1fd2fa5 | 4079 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4080 | |
4081 | int | |
accd0bcd | 4082 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4083 | { |
f7ce857f | 4084 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4085 | |
f7ce857f | 4086 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4087 | { |
f7ce857f PA |
4088 | struct bp_location *bl = *blp; |
4089 | ||
35df4500 TJB |
4090 | if (bl->loc_type != bp_loc_software_breakpoint |
4091 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4092 | continue; |
4093 | ||
f7ce857f PA |
4094 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4095 | return 1; | |
c5aa993b | 4096 | } |
c36b740a VP |
4097 | return 0; |
4098 | } | |
4099 | ||
a1fd2fa5 PA |
4100 | /* This function returns non-zero iff there is a software breakpoint |
4101 | inserted at PC. */ | |
c36b740a VP |
4102 | |
4103 | int | |
accd0bcd | 4104 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4105 | CORE_ADDR pc) |
4fa8626c | 4106 | { |
f7ce857f | 4107 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4108 | |
f7ce857f | 4109 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4110 | { |
f7ce857f PA |
4111 | struct bp_location *bl = *blp; |
4112 | ||
35df4500 | 4113 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4114 | continue; |
4115 | ||
f7ce857f PA |
4116 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4117 | return 1; | |
4fa8626c DJ |
4118 | } |
4119 | ||
4120 | return 0; | |
9c02b525 PA |
4121 | } |
4122 | ||
4123 | /* See breakpoint.h. */ | |
4124 | ||
4125 | int | |
accd0bcd | 4126 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4127 | CORE_ADDR pc) |
4128 | { | |
4129 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4130 | |
4131 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4132 | { | |
4133 | struct bp_location *bl = *blp; | |
4134 | ||
4135 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4136 | continue; | |
4137 | ||
4138 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4139 | return 1; | |
4140 | } | |
4141 | ||
4142 | return 0; | |
4fa8626c DJ |
4143 | } |
4144 | ||
9093389c | 4145 | int |
accd0bcd | 4146 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4147 | CORE_ADDR addr, ULONGEST len) |
4148 | { | |
4149 | struct breakpoint *bpt; | |
4150 | ||
4151 | ALL_BREAKPOINTS (bpt) | |
4152 | { | |
4153 | struct bp_location *loc; | |
4154 | ||
4155 | if (bpt->type != bp_hardware_watchpoint | |
4156 | && bpt->type != bp_access_watchpoint) | |
4157 | continue; | |
4158 | ||
4159 | if (!breakpoint_enabled (bpt)) | |
4160 | continue; | |
4161 | ||
4162 | for (loc = bpt->loc; loc; loc = loc->next) | |
4163 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4164 | { | |
4165 | CORE_ADDR l, h; | |
4166 | ||
4167 | /* Check for intersection. */ | |
768adc05 PA |
4168 | l = std::max<CORE_ADDR> (loc->address, addr); |
4169 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4170 | if (l < h) |
4171 | return 1; | |
4172 | } | |
4173 | } | |
4174 | return 0; | |
4175 | } | |
c906108c | 4176 | \f |
c5aa993b | 4177 | |
c906108c SS |
4178 | /* bpstat stuff. External routines' interfaces are documented |
4179 | in breakpoint.h. */ | |
4180 | ||
4181 | int | |
c326b90e | 4182 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4183 | { |
533be4dd | 4184 | return (ep->type == bp_catchpoint); |
c906108c SS |
4185 | } |
4186 | ||
f431efe5 PA |
4187 | /* Frees any storage that is part of a bpstat. Does not walk the |
4188 | 'next' chain. */ | |
4189 | ||
04afa70c | 4190 | bpstats::~bpstats () |
198757a8 | 4191 | { |
04afa70c TT |
4192 | if (bp_location_at != NULL) |
4193 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4194 | } |
4195 | ||
c906108c SS |
4196 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4197 | Also free any storage that is part of a bpstat. */ | |
4198 | ||
4199 | void | |
fba45db2 | 4200 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4201 | { |
4202 | bpstat p; | |
4203 | bpstat q; | |
4204 | ||
4205 | if (bsp == 0) | |
4206 | return; | |
4207 | p = *bsp; | |
4208 | while (p != NULL) | |
4209 | { | |
4210 | q = p->next; | |
04afa70c | 4211 | delete p; |
c906108c SS |
4212 | p = q; |
4213 | } | |
4214 | *bsp = NULL; | |
4215 | } | |
4216 | ||
04afa70c TT |
4217 | bpstats::bpstats (const bpstats &other) |
4218 | : next (NULL), | |
4219 | bp_location_at (other.bp_location_at), | |
4220 | breakpoint_at (other.breakpoint_at), | |
4221 | commands (other.commands), | |
04afa70c TT |
4222 | print (other.print), |
4223 | stop (other.stop), | |
4224 | print_it (other.print_it) | |
4225 | { | |
850645cf TT |
4226 | if (other.old_val != NULL) |
4227 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4228 | incref_bp_location (bp_location_at); |
04afa70c TT |
4229 | } |
4230 | ||
c906108c SS |
4231 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4232 | is part of the bpstat is copied as well. */ | |
4233 | ||
4234 | bpstat | |
fba45db2 | 4235 | bpstat_copy (bpstat bs) |
c906108c SS |
4236 | { |
4237 | bpstat p = NULL; | |
4238 | bpstat tmp; | |
4239 | bpstat retval = NULL; | |
4240 | ||
4241 | if (bs == NULL) | |
4242 | return bs; | |
4243 | ||
4244 | for (; bs != NULL; bs = bs->next) | |
4245 | { | |
04afa70c | 4246 | tmp = new bpstats (*bs); |
31cc81e9 | 4247 | |
c906108c SS |
4248 | if (p == NULL) |
4249 | /* This is the first thing in the chain. */ | |
4250 | retval = tmp; | |
4251 | else | |
4252 | p->next = tmp; | |
4253 | p = tmp; | |
4254 | } | |
4255 | p->next = NULL; | |
4256 | return retval; | |
4257 | } | |
4258 | ||
4a64f543 | 4259 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4260 | |
4261 | bpstat | |
fba45db2 | 4262 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4263 | { |
c5aa993b JM |
4264 | if (bsp == NULL) |
4265 | return NULL; | |
c906108c | 4266 | |
c5aa993b JM |
4267 | for (; bsp != NULL; bsp = bsp->next) |
4268 | { | |
f431efe5 | 4269 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4270 | return bsp; |
4271 | } | |
c906108c SS |
4272 | return NULL; |
4273 | } | |
4274 | ||
ab04a2af TT |
4275 | /* See breakpoint.h. */ |
4276 | ||
47591c29 | 4277 | int |
427cd150 | 4278 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4279 | { |
ab04a2af TT |
4280 | for (; bsp != NULL; bsp = bsp->next) |
4281 | { | |
427cd150 TT |
4282 | if (bsp->breakpoint_at == NULL) |
4283 | { | |
4284 | /* A moribund location can never explain a signal other than | |
4285 | GDB_SIGNAL_TRAP. */ | |
4286 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4287 | return 1; |
427cd150 TT |
4288 | } |
4289 | else | |
47591c29 PA |
4290 | { |
4291 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4292 | sig)) | |
4293 | return 1; | |
4294 | } | |
ab04a2af TT |
4295 | } |
4296 | ||
47591c29 | 4297 | return 0; |
ab04a2af TT |
4298 | } |
4299 | ||
4a64f543 MS |
4300 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4301 | stopped at. *BSP upon return is a bpstat which points to the | |
4302 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4303 | good for anything but further calls to bpstat_num). | |
4304 | ||
8671a17b PA |
4305 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4306 | Return -1 if stopped at a breakpoint that has been deleted since | |
4307 | we set it. | |
4308 | Return 1 otherwise. */ | |
c906108c SS |
4309 | |
4310 | int | |
8671a17b | 4311 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4312 | { |
4313 | struct breakpoint *b; | |
4314 | ||
4315 | if ((*bsp) == NULL) | |
4316 | return 0; /* No more breakpoint values */ | |
8671a17b | 4317 | |
4a64f543 MS |
4318 | /* We assume we'll never have several bpstats that correspond to a |
4319 | single breakpoint -- otherwise, this function might return the | |
4320 | same number more than once and this will look ugly. */ | |
f431efe5 | 4321 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4322 | *bsp = (*bsp)->next; |
4323 | if (b == NULL) | |
4324 | return -1; /* breakpoint that's been deleted since */ | |
4325 | ||
4326 | *num = b->number; /* We have its number */ | |
4327 | return 1; | |
c906108c SS |
4328 | } |
4329 | ||
e93ca019 | 4330 | /* See breakpoint.h. */ |
c906108c SS |
4331 | |
4332 | void | |
e93ca019 | 4333 | bpstat_clear_actions (void) |
c906108c | 4334 | { |
e93ca019 JK |
4335 | struct thread_info *tp; |
4336 | bpstat bs; | |
4337 | ||
4338 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4339 | return; | |
4340 | ||
4341 | tp = find_thread_ptid (inferior_ptid); | |
4342 | if (tp == NULL) | |
4343 | return; | |
4344 | ||
4345 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4346 | { |
d1b0a7bf | 4347 | bs->commands = NULL; |
850645cf | 4348 | bs->old_val.reset (nullptr); |
c906108c SS |
4349 | } |
4350 | } | |
4351 | ||
f3b1572e PA |
4352 | /* Called when a command is about to proceed the inferior. */ |
4353 | ||
4354 | static void | |
4355 | breakpoint_about_to_proceed (void) | |
4356 | { | |
4357 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4358 | { | |
4359 | struct thread_info *tp = inferior_thread (); | |
4360 | ||
4361 | /* Allow inferior function calls in breakpoint commands to not | |
4362 | interrupt the command list. When the call finishes | |
4363 | successfully, the inferior will be standing at the same | |
4364 | breakpoint as if nothing happened. */ | |
16c381f0 | 4365 | if (tp->control.in_infcall) |
f3b1572e PA |
4366 | return; |
4367 | } | |
4368 | ||
4369 | breakpoint_proceeded = 1; | |
4370 | } | |
4371 | ||
abf85f46 JK |
4372 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4373 | or its equivalent. */ | |
4374 | ||
4375 | static int | |
4376 | command_line_is_silent (struct command_line *cmd) | |
4377 | { | |
4f45d445 | 4378 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4379 | } |
4380 | ||
4a64f543 MS |
4381 | /* Execute all the commands associated with all the breakpoints at |
4382 | this location. Any of these commands could cause the process to | |
4383 | proceed beyond this point, etc. We look out for such changes by | |
4384 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4385 | |
347bddb7 PA |
4386 | Returns true if a breakpoint command resumed the inferior. In that |
4387 | case, it is the caller's responsibility to recall it again with the | |
4388 | bpstat of the current thread. */ | |
4389 | ||
4390 | static int | |
4391 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4392 | { |
4393 | bpstat bs; | |
347bddb7 | 4394 | int again = 0; |
c906108c SS |
4395 | |
4396 | /* Avoid endless recursion if a `source' command is contained | |
4397 | in bs->commands. */ | |
4398 | if (executing_breakpoint_commands) | |
347bddb7 | 4399 | return 0; |
c906108c | 4400 | |
81b1e71c TT |
4401 | scoped_restore save_executing |
4402 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4403 | |
1ac32117 | 4404 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4405 | |
4a64f543 | 4406 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4407 | bs = *bsp; |
4408 | ||
4409 | breakpoint_proceeded = 0; | |
4410 | for (; bs != NULL; bs = bs->next) | |
4411 | { | |
d1b0a7bf | 4412 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4413 | |
4414 | /* Take ownership of the BSP's command tree, if it has one. | |
4415 | ||
4416 | The command tree could legitimately contain commands like | |
4417 | 'step' and 'next', which call clear_proceed_status, which | |
4418 | frees stop_bpstat's command tree. To make sure this doesn't | |
4419 | free the tree we're executing out from under us, we need to | |
4420 | take ownership of the tree ourselves. Since a given bpstat's | |
4421 | commands are only executed once, we don't need to copy it; we | |
4422 | can clear the pointer in the bpstat, and make sure we free | |
4423 | the tree when we're done. */ | |
d1b0a7bf | 4424 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4425 | bs->commands = NULL; |
d1b0a7bf TT |
4426 | if (ccmd != NULL) |
4427 | cmd = ccmd.get (); | |
abf85f46 JK |
4428 | if (command_line_is_silent (cmd)) |
4429 | { | |
4430 | /* The action has been already done by bpstat_stop_status. */ | |
4431 | cmd = cmd->next; | |
4432 | } | |
6c50ab1c | 4433 | |
c906108c SS |
4434 | while (cmd != NULL) |
4435 | { | |
4436 | execute_control_command (cmd); | |
4437 | ||
4438 | if (breakpoint_proceeded) | |
4439 | break; | |
4440 | else | |
4441 | cmd = cmd->next; | |
4442 | } | |
6c50ab1c | 4443 | |
c906108c | 4444 | if (breakpoint_proceeded) |
32c1e744 | 4445 | { |
cb814510 | 4446 | if (current_ui->async) |
347bddb7 PA |
4447 | /* If we are in async mode, then the target might be still |
4448 | running, not stopped at any breakpoint, so nothing for | |
4449 | us to do here -- just return to the event loop. */ | |
4450 | ; | |
32c1e744 VP |
4451 | else |
4452 | /* In sync mode, when execute_control_command returns | |
4453 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4454 | Breakpoint commands for that stop were not run, since |
4455 | execute_command does not run breakpoint commands -- | |
4456 | only command_line_handler does, but that one is not | |
4457 | involved in execution of breakpoint commands. So, we | |
4458 | can now execute breakpoint commands. It should be | |
4459 | noted that making execute_command do bpstat actions is | |
4460 | not an option -- in this case we'll have recursive | |
4461 | invocation of bpstat for each breakpoint with a | |
4462 | command, and can easily blow up GDB stack. Instead, we | |
4463 | return true, which will trigger the caller to recall us | |
4464 | with the new stop_bpstat. */ | |
4465 | again = 1; | |
4466 | break; | |
32c1e744 | 4467 | } |
c906108c | 4468 | } |
347bddb7 PA |
4469 | return again; |
4470 | } | |
4471 | ||
4472 | void | |
4473 | bpstat_do_actions (void) | |
4474 | { | |
353d1d73 JK |
4475 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4476 | ||
347bddb7 PA |
4477 | /* Do any commands attached to breakpoint we are stopped at. */ |
4478 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4479 | && target_has_execution | |
4480 | && !is_exited (inferior_ptid) | |
4481 | && !is_executing (inferior_ptid)) | |
4482 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4483 | and only return when it is stopped at the next breakpoint, we | |
4484 | keep doing breakpoint actions until it returns false to | |
4485 | indicate the inferior was not resumed. */ | |
16c381f0 | 4486 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4487 | break; |
353d1d73 JK |
4488 | |
4489 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4490 | } |
4491 | ||
fa4727a6 DJ |
4492 | /* Print out the (old or new) value associated with a watchpoint. */ |
4493 | ||
4494 | static void | |
4495 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4496 | { | |
4497 | if (val == NULL) | |
4498 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4499 | else | |
79a45b7d TT |
4500 | { |
4501 | struct value_print_options opts; | |
4502 | get_user_print_options (&opts); | |
4503 | value_print (val, stream, &opts); | |
4504 | } | |
fa4727a6 DJ |
4505 | } |
4506 | ||
f303dbd6 PA |
4507 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4508 | debugging multiple threads. */ | |
4509 | ||
4510 | void | |
4511 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4512 | { | |
112e8700 | 4513 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4514 | return; |
4515 | ||
112e8700 | 4516 | uiout->text ("\n"); |
f303dbd6 PA |
4517 | |
4518 | if (show_thread_that_caused_stop ()) | |
4519 | { | |
4520 | const char *name; | |
4521 | struct thread_info *thr = inferior_thread (); | |
4522 | ||
112e8700 SM |
4523 | uiout->text ("Thread "); |
4524 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4525 | |
4526 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4527 | if (name != NULL) | |
4528 | { | |
112e8700 SM |
4529 | uiout->text (" \""); |
4530 | uiout->field_fmt ("name", "%s", name); | |
4531 | uiout->text ("\""); | |
f303dbd6 PA |
4532 | } |
4533 | ||
112e8700 | 4534 | uiout->text (" hit "); |
f303dbd6 PA |
4535 | } |
4536 | } | |
4537 | ||
e514a9d6 | 4538 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4539 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4540 | 'print_it' in the bpstat structure. Under some circumstances we |
4541 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4542 | normal_stop(). */ |
e514a9d6 JM |
4543 | |
4544 | static enum print_stop_action | |
4545 | print_bp_stop_message (bpstat bs) | |
4546 | { | |
4547 | switch (bs->print_it) | |
4548 | { | |
4549 | case print_it_noop: | |
4a64f543 | 4550 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4551 | return PRINT_UNKNOWN; |
4552 | break; | |
4553 | ||
4554 | case print_it_done: | |
4555 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4556 | relevant messages. */ |
e514a9d6 JM |
4557 | return PRINT_SRC_AND_LOC; |
4558 | break; | |
4559 | ||
4560 | case print_it_normal: | |
4f8d1dc6 | 4561 | { |
f431efe5 PA |
4562 | struct breakpoint *b = bs->breakpoint_at; |
4563 | ||
1a6a67de TJB |
4564 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4565 | which has since been deleted. */ | |
4566 | if (b == NULL) | |
4567 | return PRINT_UNKNOWN; | |
4568 | ||
348d480f PA |
4569 | /* Normal case. Call the breakpoint's print_it method. */ |
4570 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4571 | } |
348d480f | 4572 | break; |
3086aeae | 4573 | |
e514a9d6 | 4574 | default: |
8e65ff28 | 4575 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4576 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4577 | break; |
c906108c | 4578 | } |
c906108c SS |
4579 | } |
4580 | ||
edcc5120 TT |
4581 | /* A helper function that prints a shared library stopped event. */ |
4582 | ||
4583 | static void | |
4584 | print_solib_event (int is_catchpoint) | |
4585 | { | |
6fb16ce6 | 4586 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
edcc5120 TT |
4587 | int any_added |
4588 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4589 | ||
4590 | if (!is_catchpoint) | |
4591 | { | |
4592 | if (any_added || any_deleted) | |
112e8700 | 4593 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4594 | else |
112e8700 SM |
4595 | current_uiout->text (_("Stopped due to shared library event (no " |
4596 | "libraries added or removed)\n")); | |
edcc5120 TT |
4597 | } |
4598 | ||
112e8700 SM |
4599 | if (current_uiout->is_mi_like_p ()) |
4600 | current_uiout->field_string ("reason", | |
4601 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4602 | |
4603 | if (any_deleted) | |
4604 | { | |
112e8700 | 4605 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4606 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4607 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4608 | { |
6fb16ce6 SM |
4609 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4610 | ||
edcc5120 | 4611 | if (ix > 0) |
112e8700 SM |
4612 | current_uiout->text (" "); |
4613 | current_uiout->field_string ("library", name); | |
4614 | current_uiout->text ("\n"); | |
edcc5120 | 4615 | } |
edcc5120 TT |
4616 | } |
4617 | ||
4618 | if (any_added) | |
4619 | { | |
4620 | struct so_list *iter; | |
4621 | int ix; | |
edcc5120 | 4622 | |
112e8700 | 4623 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4624 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4625 | for (ix = 0; |
4626 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4627 | ix, iter); | |
4628 | ++ix) | |
4629 | { | |
4630 | if (ix > 0) | |
112e8700 SM |
4631 | current_uiout->text (" "); |
4632 | current_uiout->field_string ("library", iter->so_name); | |
4633 | current_uiout->text ("\n"); | |
edcc5120 | 4634 | } |
edcc5120 TT |
4635 | } |
4636 | } | |
4637 | ||
e514a9d6 JM |
4638 | /* Print a message indicating what happened. This is called from |
4639 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4640 | list - a list of the eventpoints that caused this stop. KIND is |
4641 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4642 | routine calls the generic print routine for printing a message |
4643 | about reasons for stopping. This will print (for example) the | |
4644 | "Breakpoint n," part of the output. The return value of this | |
4645 | routine is one of: | |
c906108c | 4646 | |
4a64f543 | 4647 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4648 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4649 | code to print the location. An example is |
c5aa993b JM |
4650 | "Breakpoint 1, " which should be followed by |
4651 | the location. | |
917317f4 | 4652 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4653 | to also print the location part of the message. |
4654 | An example is the catch/throw messages, which | |
4a64f543 | 4655 | don't require a location appended to the end. |
917317f4 | 4656 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4657 | further info to be printed. */ |
c906108c | 4658 | |
917317f4 | 4659 | enum print_stop_action |
36dfb11c | 4660 | bpstat_print (bpstat bs, int kind) |
c906108c | 4661 | { |
f486487f | 4662 | enum print_stop_action val; |
c5aa993b | 4663 | |
c906108c | 4664 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4665 | (Currently all watchpoints go on the bpstat whether hit or not. |
4666 | That probably could (should) be changed, provided care is taken | |
c906108c | 4667 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4668 | for (; bs; bs = bs->next) |
4669 | { | |
4670 | val = print_bp_stop_message (bs); | |
4671 | if (val == PRINT_SRC_ONLY | |
4672 | || val == PRINT_SRC_AND_LOC | |
4673 | || val == PRINT_NOTHING) | |
4674 | return val; | |
4675 | } | |
c906108c | 4676 | |
36dfb11c TT |
4677 | /* If we had hit a shared library event breakpoint, |
4678 | print_bp_stop_message would print out this message. If we hit an | |
4679 | OS-level shared library event, do the same thing. */ | |
4680 | if (kind == TARGET_WAITKIND_LOADED) | |
4681 | { | |
edcc5120 | 4682 | print_solib_event (0); |
36dfb11c TT |
4683 | return PRINT_NOTHING; |
4684 | } | |
4685 | ||
e514a9d6 | 4686 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4687 | with and nothing was printed. */ |
917317f4 | 4688 | return PRINT_UNKNOWN; |
c906108c SS |
4689 | } |
4690 | ||
bf469271 | 4691 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4692 | |
bf469271 PA |
4693 | static bool |
4694 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4695 | { |
278cd55f | 4696 | struct value *mark = value_mark (); |
bf469271 | 4697 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4698 | |
c906108c | 4699 | value_free_to_mark (mark); |
bf469271 | 4700 | return res; |
c906108c SS |
4701 | } |
4702 | ||
5760d0ab | 4703 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4704 | |
04afa70c TT |
4705 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4706 | : next (NULL), | |
4707 | bp_location_at (bl), | |
4708 | breakpoint_at (bl->owner), | |
4709 | commands (NULL), | |
04afa70c TT |
4710 | print (0), |
4711 | stop (0), | |
4712 | print_it (print_it_normal) | |
c906108c | 4713 | { |
f431efe5 | 4714 | incref_bp_location (bl); |
04afa70c TT |
4715 | **bs_link_pointer = this; |
4716 | *bs_link_pointer = &next; | |
4717 | } | |
4718 | ||
4719 | bpstats::bpstats () | |
4720 | : next (NULL), | |
4721 | bp_location_at (NULL), | |
4722 | breakpoint_at (NULL), | |
4723 | commands (NULL), | |
04afa70c TT |
4724 | print (0), |
4725 | stop (0), | |
4726 | print_it (print_it_normal) | |
4727 | { | |
c906108c SS |
4728 | } |
4729 | \f | |
d983da9c DJ |
4730 | /* The target has stopped with waitstatus WS. Check if any hardware |
4731 | watchpoints have triggered, according to the target. */ | |
4732 | ||
4733 | int | |
4734 | watchpoints_triggered (struct target_waitstatus *ws) | |
4735 | { | |
57810aa7 | 4736 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4737 | CORE_ADDR addr; |
4738 | struct breakpoint *b; | |
4739 | ||
4740 | if (!stopped_by_watchpoint) | |
4741 | { | |
4742 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4743 | as not triggered. */ | |
4744 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4745 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4746 | { |
4747 | struct watchpoint *w = (struct watchpoint *) b; | |
4748 | ||
4749 | w->watchpoint_triggered = watch_triggered_no; | |
4750 | } | |
d983da9c DJ |
4751 | |
4752 | return 0; | |
4753 | } | |
4754 | ||
f6ac5f3d | 4755 | if (!target_stopped_data_address (target_stack, &addr)) |
d983da9c DJ |
4756 | { |
4757 | /* We were stopped by a watchpoint, but we don't know where. | |
4758 | Mark all watchpoints as unknown. */ | |
4759 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4760 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4761 | { |
4762 | struct watchpoint *w = (struct watchpoint *) b; | |
4763 | ||
4764 | w->watchpoint_triggered = watch_triggered_unknown; | |
4765 | } | |
d983da9c | 4766 | |
3c4797ba | 4767 | return 1; |
d983da9c DJ |
4768 | } |
4769 | ||
4770 | /* The target could report the data address. Mark watchpoints | |
4771 | affected by this data address as triggered, and all others as not | |
4772 | triggered. */ | |
4773 | ||
4774 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4775 | if (is_hardware_watchpoint (b)) |
d983da9c | 4776 | { |
3a5c3e22 | 4777 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4778 | struct bp_location *loc; |
d983da9c | 4779 | |
3a5c3e22 | 4780 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4781 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4782 | { |
3a5c3e22 | 4783 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4784 | { |
3a5c3e22 PA |
4785 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4786 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4787 | |
4788 | if (newaddr == start) | |
4789 | { | |
3a5c3e22 | 4790 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4791 | break; |
4792 | } | |
4793 | } | |
4794 | /* Exact match not required. Within range is sufficient. */ | |
f6ac5f3d | 4795 | else if (target_watchpoint_addr_within_range (target_stack, |
9c06b0b4 TJB |
4796 | addr, loc->address, |
4797 | loc->length)) | |
4798 | { | |
3a5c3e22 | 4799 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4800 | break; |
4801 | } | |
4802 | } | |
d983da9c DJ |
4803 | } |
4804 | ||
4805 | return 1; | |
4806 | } | |
4807 | ||
bf469271 PA |
4808 | /* Possible return values for watchpoint_check. */ |
4809 | enum wp_check_result | |
4810 | { | |
4811 | /* The watchpoint has been deleted. */ | |
4812 | WP_DELETED = 1, | |
4813 | ||
4814 | /* The value has changed. */ | |
4815 | WP_VALUE_CHANGED = 2, | |
4816 | ||
4817 | /* The value has not changed. */ | |
4818 | WP_VALUE_NOT_CHANGED = 3, | |
4819 | ||
4820 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4821 | WP_IGNORE = 4, | |
4822 | }; | |
c906108c SS |
4823 | |
4824 | #define BP_TEMPFLAG 1 | |
4825 | #define BP_HARDWAREFLAG 2 | |
4826 | ||
4a64f543 | 4827 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4828 | changed. */ |
553e4c11 | 4829 | |
bf469271 PA |
4830 | static wp_check_result |
4831 | watchpoint_check (bpstat bs) | |
c906108c | 4832 | { |
3a5c3e22 | 4833 | struct watchpoint *b; |
c906108c SS |
4834 | struct frame_info *fr; |
4835 | int within_current_scope; | |
4836 | ||
f431efe5 | 4837 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4838 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4839 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4840 | |
f6bc2008 PA |
4841 | /* If this is a local watchpoint, we only want to check if the |
4842 | watchpoint frame is in scope if the current thread is the thread | |
4843 | that was used to create the watchpoint. */ | |
4844 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4845 | return WP_IGNORE; |
f6bc2008 | 4846 | |
c906108c SS |
4847 | if (b->exp_valid_block == NULL) |
4848 | within_current_scope = 1; | |
4849 | else | |
4850 | { | |
edb3359d DJ |
4851 | struct frame_info *frame = get_current_frame (); |
4852 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4853 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4854 | ||
c9cf6e20 | 4855 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4856 | still in the function but the stack frame has already been |
4857 | invalidated. Since we can't rely on the values of local | |
4858 | variables after the stack has been destroyed, we are treating | |
4859 | the watchpoint in that state as `not changed' without further | |
4860 | checking. Don't mark watchpoints as changed if the current | |
4861 | frame is in an epilogue - even if they are in some other | |
4862 | frame, our view of the stack is likely to be wrong and | |
4863 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4864 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4865 | return WP_IGNORE; |
a0f49112 | 4866 | |
101dcfbe | 4867 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4868 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4869 | |
4870 | /* If we've gotten confused in the unwinder, we might have | |
4871 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4872 | if (within_current_scope) |
4873 | { | |
4874 | struct symbol *function; | |
4875 | ||
4876 | function = get_frame_function (fr); | |
4877 | if (function == NULL | |
4878 | || !contained_in (b->exp_valid_block, | |
4879 | SYMBOL_BLOCK_VALUE (function))) | |
4880 | within_current_scope = 0; | |
4881 | } | |
69fbadd5 | 4882 | |
edb3359d | 4883 | if (within_current_scope) |
c906108c SS |
4884 | /* If we end up stopping, the current frame will get selected |
4885 | in normal_stop. So this call to select_frame won't affect | |
4886 | the user. */ | |
0f7d239c | 4887 | select_frame (fr); |
c906108c | 4888 | } |
c5aa993b | 4889 | |
c906108c SS |
4890 | if (within_current_scope) |
4891 | { | |
4a64f543 MS |
4892 | /* We use value_{,free_to_}mark because it could be a *long* |
4893 | time before we return to the command level and call | |
4894 | free_all_values. We can't call free_all_values because we | |
4895 | might be in the middle of evaluating a function call. */ | |
c906108c | 4896 | |
0cf6dd15 | 4897 | int pc = 0; |
9c06b0b4 | 4898 | struct value *mark; |
fa4727a6 DJ |
4899 | struct value *new_val; |
4900 | ||
c1fc2657 | 4901 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4902 | /* Since we don't know the exact trigger address (from |
4903 | stopped_data_address), just tell the user we've triggered | |
4904 | a mask watchpoint. */ | |
4905 | return WP_VALUE_CHANGED; | |
4906 | ||
4907 | mark = value_mark (); | |
4d01a485 | 4908 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4909 | |
bb9d5f81 PP |
4910 | if (b->val_bitsize != 0) |
4911 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4912 | ||
4a64f543 MS |
4913 | /* We use value_equal_contents instead of value_equal because |
4914 | the latter coerces an array to a pointer, thus comparing just | |
4915 | the address of the array instead of its contents. This is | |
4916 | not what we want. */ | |
fa4727a6 | 4917 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4918 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4919 | new_val))) | |
c906108c | 4920 | { |
c906108c | 4921 | bs->old_val = b->val; |
850645cf | 4922 | b->val = release_value (new_val); |
fa4727a6 | 4923 | b->val_valid = 1; |
850645cf TT |
4924 | if (new_val != NULL) |
4925 | value_free_to_mark (mark); | |
c906108c SS |
4926 | return WP_VALUE_CHANGED; |
4927 | } | |
4928 | else | |
4929 | { | |
60e1c644 | 4930 | /* Nothing changed. */ |
c906108c | 4931 | value_free_to_mark (mark); |
c906108c SS |
4932 | return WP_VALUE_NOT_CHANGED; |
4933 | } | |
4934 | } | |
4935 | else | |
4936 | { | |
4937 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4938 | if we temporarily ignored the watchpoint, then when |
4939 | we reenter the block in which it is valid it contains | |
4940 | garbage (in the case of a function, it may have two | |
4941 | garbage values, one before and one after the prologue). | |
4942 | So we can't even detect the first assignment to it and | |
4943 | watch after that (since the garbage may or may not equal | |
4944 | the first value assigned). */ | |
348d480f PA |
4945 | /* We print all the stop information in |
4946 | breakpoint_ops->print_it, but in this case, by the time we | |
4947 | call breakpoint_ops->print_it this bp will be deleted | |
4948 | already. So we have no choice but print the information | |
4949 | here. */ | |
468afe6c | 4950 | |
0e454242 | 4951 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4952 | { |
4953 | struct ui_out *uiout = current_uiout; | |
4954 | ||
112e8700 SM |
4955 | if (uiout->is_mi_like_p ()) |
4956 | uiout->field_string | |
4957 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4958 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4959 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4960 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4961 | "which its expression is valid.\n"); |
4962 | } | |
4ce44c66 | 4963 | |
cdac0397 | 4964 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4965 | b->commands = NULL; |
d0fb5eae | 4966 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4967 | |
4968 | return WP_DELETED; | |
4969 | } | |
4970 | } | |
4971 | ||
18a18393 | 4972 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4973 | breakpoint location BL. This function does not check if we should |
4974 | stop, only if BL explains the stop. */ | |
4975 | ||
18a18393 | 4976 | static int |
6c95b8df | 4977 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4978 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4979 | const struct target_waitstatus *ws) |
18a18393 VP |
4980 | { |
4981 | struct breakpoint *b = bl->owner; | |
4982 | ||
348d480f | 4983 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4984 | gdb_assert (b != NULL); |
4985 | ||
bd522513 | 4986 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4987 | } |
4988 | ||
3a5c3e22 PA |
4989 | /* Determine if the watched values have actually changed, and we |
4990 | should stop. If not, set BS->stop to 0. */ | |
4991 | ||
18a18393 VP |
4992 | static void |
4993 | bpstat_check_watchpoint (bpstat bs) | |
4994 | { | |
2bdf28a0 | 4995 | const struct bp_location *bl; |
3a5c3e22 | 4996 | struct watchpoint *b; |
2bdf28a0 JK |
4997 | |
4998 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4999 | bl = bs->bp_location_at; |
2bdf28a0 | 5000 | gdb_assert (bl != NULL); |
3a5c3e22 | 5001 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5002 | gdb_assert (b != NULL); |
18a18393 | 5003 | |
18a18393 | 5004 | { |
18a18393 VP |
5005 | int must_check_value = 0; |
5006 | ||
c1fc2657 | 5007 | if (b->type == bp_watchpoint) |
18a18393 VP |
5008 | /* For a software watchpoint, we must always check the |
5009 | watched value. */ | |
5010 | must_check_value = 1; | |
5011 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5012 | /* We have a hardware watchpoint (read, write, or access) | |
5013 | and the target earlier reported an address watched by | |
5014 | this watchpoint. */ | |
5015 | must_check_value = 1; | |
5016 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5017 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5018 | /* We were stopped by a hardware watchpoint, but the target could |
5019 | not report the data address. We must check the watchpoint's | |
5020 | value. Access and read watchpoints are out of luck; without | |
5021 | a data address, we can't figure it out. */ | |
5022 | must_check_value = 1; | |
3a5c3e22 | 5023 | |
18a18393 VP |
5024 | if (must_check_value) |
5025 | { | |
bf469271 PA |
5026 | wp_check_result e; |
5027 | ||
5028 | TRY | |
5029 | { | |
5030 | e = watchpoint_check (bs); | |
5031 | } | |
5032 | CATCH (ex, RETURN_MASK_ALL) | |
5033 | { | |
5034 | exception_fprintf (gdb_stderr, ex, | |
5035 | "Error evaluating expression " | |
5036 | "for watchpoint %d\n", | |
5037 | b->number); | |
5038 | ||
5039 | SWITCH_THRU_ALL_UIS () | |
5040 | { | |
5041 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5042 | b->number); | |
5043 | } | |
5044 | watchpoint_del_at_next_stop (b); | |
5045 | e = WP_DELETED; | |
5046 | } | |
5047 | END_CATCH | |
5048 | ||
18a18393 VP |
5049 | switch (e) |
5050 | { | |
5051 | case WP_DELETED: | |
5052 | /* We've already printed what needs to be printed. */ | |
5053 | bs->print_it = print_it_done; | |
5054 | /* Stop. */ | |
5055 | break; | |
60e1c644 PA |
5056 | case WP_IGNORE: |
5057 | bs->print_it = print_it_noop; | |
5058 | bs->stop = 0; | |
5059 | break; | |
18a18393 | 5060 | case WP_VALUE_CHANGED: |
c1fc2657 | 5061 | if (b->type == bp_read_watchpoint) |
18a18393 | 5062 | { |
85d721b8 PA |
5063 | /* There are two cases to consider here: |
5064 | ||
4a64f543 | 5065 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5066 | In that case, trust the target, and always report |
5067 | the watchpoint hit to the user. Even though | |
5068 | reads don't cause value changes, the value may | |
5069 | have changed since the last time it was read, and | |
5070 | since we're not trapping writes, we will not see | |
5071 | those, and as such we should ignore our notion of | |
5072 | old value. | |
5073 | ||
4a64f543 | 5074 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5075 | reads and writes. There are two ways this may |
5076 | happen: | |
5077 | ||
4a64f543 | 5078 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5079 | reads only, but can break on accesses (reads or |
5080 | writes), such as e.g., x86. We detect this case | |
5081 | at the time we try to insert read watchpoints. | |
5082 | ||
4a64f543 | 5083 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5084 | watchpoints, but, the user set an access or write |
5085 | watchpoint watching the same memory as this read | |
5086 | watchpoint. | |
5087 | ||
5088 | If we're watching memory writes as well as reads, | |
5089 | ignore watchpoint hits when we find that the | |
5090 | value hasn't changed, as reads don't cause | |
5091 | changes. This still gives false positives when | |
5092 | the program writes the same value to memory as | |
5093 | what there was already in memory (we will confuse | |
5094 | it for a read), but it's much better than | |
5095 | nothing. */ | |
5096 | ||
5097 | int other_write_watchpoint = 0; | |
5098 | ||
5099 | if (bl->watchpoint_type == hw_read) | |
5100 | { | |
5101 | struct breakpoint *other_b; | |
5102 | ||
5103 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5104 | if (other_b->type == bp_hardware_watchpoint |
5105 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5106 | { |
3a5c3e22 PA |
5107 | struct watchpoint *other_w = |
5108 | (struct watchpoint *) other_b; | |
5109 | ||
5110 | if (other_w->watchpoint_triggered | |
5111 | == watch_triggered_yes) | |
5112 | { | |
5113 | other_write_watchpoint = 1; | |
5114 | break; | |
5115 | } | |
85d721b8 PA |
5116 | } |
5117 | } | |
5118 | ||
5119 | if (other_write_watchpoint | |
5120 | || bl->watchpoint_type == hw_access) | |
5121 | { | |
5122 | /* We're watching the same memory for writes, | |
5123 | and the value changed since the last time we | |
5124 | updated it, so this trap must be for a write. | |
5125 | Ignore it. */ | |
5126 | bs->print_it = print_it_noop; | |
5127 | bs->stop = 0; | |
5128 | } | |
18a18393 VP |
5129 | } |
5130 | break; | |
5131 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5132 | if (b->type == bp_hardware_watchpoint |
5133 | || b->type == bp_watchpoint) | |
18a18393 VP |
5134 | { |
5135 | /* Don't stop: write watchpoints shouldn't fire if | |
5136 | the value hasn't changed. */ | |
5137 | bs->print_it = print_it_noop; | |
5138 | bs->stop = 0; | |
5139 | } | |
5140 | /* Stop. */ | |
5141 | break; | |
5142 | default: | |
5143 | /* Can't happen. */ | |
18a18393 VP |
5144 | break; |
5145 | } | |
5146 | } | |
5147 | else /* must_check_value == 0 */ | |
5148 | { | |
5149 | /* This is a case where some watchpoint(s) triggered, but | |
5150 | not at the address of this watchpoint, or else no | |
5151 | watchpoint triggered after all. So don't print | |
5152 | anything for this watchpoint. */ | |
5153 | bs->print_it = print_it_noop; | |
5154 | bs->stop = 0; | |
5155 | } | |
5156 | } | |
5157 | } | |
5158 | ||
7d4df6a4 DE |
5159 | /* For breakpoints that are currently marked as telling gdb to stop, |
5160 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5161 | of breakpoint referred to by BS. If we should not stop for this |
5162 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5163 | |
18a18393 VP |
5164 | static void |
5165 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5166 | { | |
2bdf28a0 JK |
5167 | const struct bp_location *bl; |
5168 | struct breakpoint *b; | |
bf469271 PA |
5169 | /* Assume stop. */ |
5170 | bool condition_result = true; | |
7d4df6a4 DE |
5171 | struct expression *cond; |
5172 | ||
5173 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5174 | |
5175 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5176 | bl = bs->bp_location_at; |
2bdf28a0 | 5177 | gdb_assert (bl != NULL); |
f431efe5 | 5178 | b = bs->breakpoint_at; |
2bdf28a0 | 5179 | gdb_assert (b != NULL); |
18a18393 | 5180 | |
b775012e LM |
5181 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5182 | need to do so again since GDB does not know if we stopped due to a | |
5183 | breakpoint or a single step breakpoint. */ | |
5184 | ||
18a18393 | 5185 | if (frame_id_p (b->frame_id) |
edb3359d | 5186 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5187 | { |
7d4df6a4 DE |
5188 | bs->stop = 0; |
5189 | return; | |
5190 | } | |
60e1c644 | 5191 | |
12ab52e9 PA |
5192 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5193 | evaluating the condition if this isn't the specified | |
5194 | thread/task. */ | |
5d5658a1 | 5195 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5196 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5197 | ||
6c1b0f7b DE |
5198 | { |
5199 | bs->stop = 0; | |
5200 | return; | |
5201 | } | |
5202 | ||
6dddc817 DE |
5203 | /* Evaluate extension language breakpoints that have a "stop" method |
5204 | implemented. */ | |
5205 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5206 | |
7d4df6a4 DE |
5207 | if (is_watchpoint (b)) |
5208 | { | |
5209 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5210 | |
4d01a485 | 5211 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5212 | } |
5213 | else | |
4d01a485 | 5214 | cond = bl->cond.get (); |
60e1c644 | 5215 | |
7d4df6a4 DE |
5216 | if (cond && b->disposition != disp_del_at_next_stop) |
5217 | { | |
5218 | int within_current_scope = 1; | |
5219 | struct watchpoint * w; | |
60e1c644 | 5220 | |
7d4df6a4 DE |
5221 | /* We use value_mark and value_free_to_mark because it could |
5222 | be a long time before we return to the command level and | |
5223 | call free_all_values. We can't call free_all_values | |
5224 | because we might be in the middle of evaluating a | |
5225 | function call. */ | |
5226 | struct value *mark = value_mark (); | |
5227 | ||
5228 | if (is_watchpoint (b)) | |
5229 | w = (struct watchpoint *) b; | |
5230 | else | |
5231 | w = NULL; | |
5232 | ||
5233 | /* Need to select the frame, with all that implies so that | |
5234 | the conditions will have the right context. Because we | |
5235 | use the frame, we will not see an inlined function's | |
5236 | variables when we arrive at a breakpoint at the start | |
5237 | of the inlined function; the current frame will be the | |
5238 | call site. */ | |
5239 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5240 | select_frame (get_current_frame ()); | |
5241 | else | |
18a18393 | 5242 | { |
7d4df6a4 DE |
5243 | struct frame_info *frame; |
5244 | ||
5245 | /* For local watchpoint expressions, which particular | |
5246 | instance of a local is being watched matters, so we | |
5247 | keep track of the frame to evaluate the expression | |
5248 | in. To evaluate the condition however, it doesn't | |
5249 | really matter which instantiation of the function | |
5250 | where the condition makes sense triggers the | |
5251 | watchpoint. This allows an expression like "watch | |
5252 | global if q > 10" set in `func', catch writes to | |
5253 | global on all threads that call `func', or catch | |
5254 | writes on all recursive calls of `func' by a single | |
5255 | thread. We simply always evaluate the condition in | |
5256 | the innermost frame that's executing where it makes | |
5257 | sense to evaluate the condition. It seems | |
5258 | intuitive. */ | |
5259 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5260 | if (frame != NULL) | |
5261 | select_frame (frame); | |
5262 | else | |
5263 | within_current_scope = 0; | |
18a18393 | 5264 | } |
7d4df6a4 | 5265 | if (within_current_scope) |
bf469271 PA |
5266 | { |
5267 | TRY | |
5268 | { | |
5269 | condition_result = breakpoint_cond_eval (cond); | |
5270 | } | |
5271 | CATCH (ex, RETURN_MASK_ALL) | |
5272 | { | |
5273 | exception_fprintf (gdb_stderr, ex, | |
5274 | "Error in testing breakpoint condition:\n"); | |
5275 | } | |
5276 | END_CATCH | |
5277 | } | |
7d4df6a4 | 5278 | else |
18a18393 | 5279 | { |
7d4df6a4 DE |
5280 | warning (_("Watchpoint condition cannot be tested " |
5281 | "in the current scope")); | |
5282 | /* If we failed to set the right context for this | |
5283 | watchpoint, unconditionally report it. */ | |
18a18393 | 5284 | } |
7d4df6a4 DE |
5285 | /* FIXME-someday, should give breakpoint #. */ |
5286 | value_free_to_mark (mark); | |
18a18393 | 5287 | } |
7d4df6a4 | 5288 | |
bf469271 | 5289 | if (cond && !condition_result) |
7d4df6a4 DE |
5290 | { |
5291 | bs->stop = 0; | |
5292 | } | |
7d4df6a4 DE |
5293 | else if (b->ignore_count > 0) |
5294 | { | |
5295 | b->ignore_count--; | |
5296 | bs->stop = 0; | |
5297 | /* Increase the hit count even though we don't stop. */ | |
5298 | ++(b->hit_count); | |
76727919 | 5299 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5300 | } |
18a18393 VP |
5301 | } |
5302 | ||
1cf4d951 PA |
5303 | /* Returns true if we need to track moribund locations of LOC's type |
5304 | on the current target. */ | |
5305 | ||
5306 | static int | |
5307 | need_moribund_for_location_type (struct bp_location *loc) | |
5308 | { | |
5309 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5310 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5311 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5312 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5313 | } | |
5314 | ||
18a18393 | 5315 | |
9709f61c | 5316 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5317 | BP_ADDR in thread PTID. |
c906108c | 5318 | |
d983da9c | 5319 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5320 | don't understand this stop. Result is a chain of bpstat's such |
5321 | that: | |
c906108c | 5322 | |
c5aa993b | 5323 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5324 | |
c5aa993b | 5325 | if we understand why we stopped, the result is not null. |
c906108c | 5326 | |
c5aa993b JM |
5327 | Each element of the chain refers to a particular breakpoint or |
5328 | watchpoint at which we have stopped. (We may have stopped for | |
5329 | several reasons concurrently.) | |
c906108c | 5330 | |
c5aa993b JM |
5331 | Each element of the chain has valid next, breakpoint_at, |
5332 | commands, FIXME??? fields. */ | |
c906108c SS |
5333 | |
5334 | bpstat | |
accd0bcd | 5335 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5336 | CORE_ADDR bp_addr, ptid_t ptid, |
5337 | const struct target_waitstatus *ws) | |
c906108c | 5338 | { |
0d381245 | 5339 | struct breakpoint *b = NULL; |
afe38095 | 5340 | struct bp_location *bl; |
20874c92 | 5341 | struct bp_location *loc; |
5760d0ab JK |
5342 | /* First item of allocated bpstat's. */ |
5343 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5344 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5345 | bpstat bs; |
20874c92 | 5346 | int ix; |
429374b8 | 5347 | int need_remove_insert; |
f431efe5 | 5348 | int removed_any; |
c906108c | 5349 | |
f431efe5 PA |
5350 | /* First, build the bpstat chain with locations that explain a |
5351 | target stop, while being careful to not set the target running, | |
5352 | as that may invalidate locations (in particular watchpoint | |
5353 | locations are recreated). Resuming will happen here with | |
5354 | breakpoint conditions or watchpoint expressions that include | |
5355 | inferior function calls. */ | |
c5aa993b | 5356 | |
429374b8 JK |
5357 | ALL_BREAKPOINTS (b) |
5358 | { | |
1a853c52 | 5359 | if (!breakpoint_enabled (b)) |
429374b8 | 5360 | continue; |
a5606eee | 5361 | |
429374b8 JK |
5362 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5363 | { | |
4a64f543 MS |
5364 | /* For hardware watchpoints, we look only at the first |
5365 | location. The watchpoint_check function will work on the | |
5366 | entire expression, not the individual locations. For | |
5367 | read watchpoints, the watchpoints_triggered function has | |
5368 | checked all locations already. */ | |
429374b8 JK |
5369 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5370 | break; | |
18a18393 | 5371 | |
f6592439 | 5372 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5373 | continue; |
c5aa993b | 5374 | |
09ac7c10 | 5375 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5376 | continue; |
c5aa993b | 5377 | |
4a64f543 MS |
5378 | /* Come here if it's a watchpoint, or if the break address |
5379 | matches. */ | |
c5aa993b | 5380 | |
04afa70c | 5381 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5382 | explain stop. */ |
c5aa993b | 5383 | |
f431efe5 PA |
5384 | /* Assume we stop. Should we find a watchpoint that is not |
5385 | actually triggered, or if the condition of the breakpoint | |
5386 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5387 | bs->stop = 1; |
5388 | bs->print = 1; | |
d983da9c | 5389 | |
f431efe5 PA |
5390 | /* If this is a scope breakpoint, mark the associated |
5391 | watchpoint as triggered so that we will handle the | |
5392 | out-of-scope event. We'll get to the watchpoint next | |
5393 | iteration. */ | |
d0fb5eae | 5394 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5395 | { |
5396 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5397 | ||
5398 | w->watchpoint_triggered = watch_triggered_yes; | |
5399 | } | |
f431efe5 PA |
5400 | } |
5401 | } | |
5402 | ||
7c16b83e | 5403 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5404 | if (!target_supports_stopped_by_sw_breakpoint () |
5405 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5406 | { |
1cf4d951 | 5407 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5408 | { |
1cf4d951 PA |
5409 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5410 | && need_moribund_for_location_type (loc)) | |
5411 | { | |
04afa70c | 5412 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5413 | /* For hits of moribund locations, we should just proceed. */ |
5414 | bs->stop = 0; | |
5415 | bs->print = 0; | |
5416 | bs->print_it = print_it_noop; | |
5417 | } | |
f431efe5 PA |
5418 | } |
5419 | } | |
5420 | ||
edcc5120 TT |
5421 | /* A bit of special processing for shlib breakpoints. We need to |
5422 | process solib loading here, so that the lists of loaded and | |
5423 | unloaded libraries are correct before we handle "catch load" and | |
5424 | "catch unload". */ | |
5425 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5426 | { | |
5d268276 | 5427 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5428 | { |
5429 | handle_solib_event (); | |
5430 | break; | |
5431 | } | |
5432 | } | |
5433 | ||
f431efe5 PA |
5434 | /* Now go through the locations that caused the target to stop, and |
5435 | check whether we're interested in reporting this stop to higher | |
5436 | layers, or whether we should resume the target transparently. */ | |
5437 | ||
5438 | removed_any = 0; | |
5439 | ||
5760d0ab | 5440 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5441 | { |
5442 | if (!bs->stop) | |
5443 | continue; | |
5444 | ||
f431efe5 | 5445 | b = bs->breakpoint_at; |
348d480f PA |
5446 | b->ops->check_status (bs); |
5447 | if (bs->stop) | |
28010a5d | 5448 | { |
348d480f | 5449 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5450 | |
429374b8 JK |
5451 | if (bs->stop) |
5452 | { | |
5453 | ++(b->hit_count); | |
76727919 | 5454 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5455 | |
4a64f543 | 5456 | /* We will stop here. */ |
429374b8 JK |
5457 | if (b->disposition == disp_disable) |
5458 | { | |
816338b5 | 5459 | --(b->enable_count); |
1a853c52 | 5460 | if (b->enable_count <= 0) |
429374b8 | 5461 | b->enable_state = bp_disabled; |
f431efe5 | 5462 | removed_any = 1; |
429374b8 JK |
5463 | } |
5464 | if (b->silent) | |
5465 | bs->print = 0; | |
5466 | bs->commands = b->commands; | |
abf85f46 | 5467 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5468 | ? bs->commands.get () : NULL)) |
abf85f46 | 5469 | bs->print = 0; |
9d6e6e84 HZ |
5470 | |
5471 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5472 | } |
5473 | ||
348d480f | 5474 | } |
a9b3a50f PA |
5475 | |
5476 | /* Print nothing for this entry if we don't stop or don't | |
5477 | print. */ | |
5478 | if (!bs->stop || !bs->print) | |
5479 | bs->print_it = print_it_noop; | |
429374b8 | 5480 | } |
876fa593 | 5481 | |
d983da9c DJ |
5482 | /* If we aren't stopping, the value of some hardware watchpoint may |
5483 | not have changed, but the intermediate memory locations we are | |
5484 | watching may have. Don't bother if we're stopping; this will get | |
5485 | done later. */ | |
d832cb68 | 5486 | need_remove_insert = 0; |
5760d0ab JK |
5487 | if (! bpstat_causes_stop (bs_head)) |
5488 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5489 | if (!bs->stop |
f431efe5 PA |
5490 | && bs->breakpoint_at |
5491 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5492 | { |
3a5c3e22 PA |
5493 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5494 | ||
5495 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5496 | need_remove_insert = 1; |
d983da9c DJ |
5497 | } |
5498 | ||
d832cb68 | 5499 | if (need_remove_insert) |
44702360 | 5500 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5501 | else if (removed_any) |
44702360 | 5502 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5503 | |
5760d0ab | 5504 | return bs_head; |
c906108c | 5505 | } |
628fe4e4 JK |
5506 | |
5507 | static void | |
5508 | handle_jit_event (void) | |
5509 | { | |
5510 | struct frame_info *frame; | |
5511 | struct gdbarch *gdbarch; | |
5512 | ||
243a9253 PA |
5513 | if (debug_infrun) |
5514 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5515 | ||
628fe4e4 JK |
5516 | /* Switch terminal for any messages produced by |
5517 | breakpoint_re_set. */ | |
223ffa71 | 5518 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5519 | |
5520 | frame = get_current_frame (); | |
5521 | gdbarch = get_frame_arch (frame); | |
5522 | ||
5523 | jit_event_handler (gdbarch); | |
5524 | ||
223ffa71 | 5525 | target_terminal::inferior (); |
628fe4e4 JK |
5526 | } |
5527 | ||
5528 | /* Prepare WHAT final decision for infrun. */ | |
5529 | ||
5530 | /* Decide what infrun needs to do with this bpstat. */ | |
5531 | ||
c906108c | 5532 | struct bpstat_what |
0e30163f | 5533 | bpstat_what (bpstat bs_head) |
c906108c | 5534 | { |
c906108c | 5535 | struct bpstat_what retval; |
0e30163f | 5536 | bpstat bs; |
c906108c | 5537 | |
628fe4e4 | 5538 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5539 | retval.call_dummy = STOP_NONE; |
186c406b | 5540 | retval.is_longjmp = 0; |
628fe4e4 | 5541 | |
0e30163f | 5542 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5543 | { |
628fe4e4 JK |
5544 | /* Extract this BS's action. After processing each BS, we check |
5545 | if its action overrides all we've seem so far. */ | |
5546 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5547 | enum bptype bptype; | |
5548 | ||
c906108c | 5549 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5550 | { |
5551 | /* I suspect this can happen if it was a momentary | |
5552 | breakpoint which has since been deleted. */ | |
5553 | bptype = bp_none; | |
5554 | } | |
20874c92 | 5555 | else |
f431efe5 | 5556 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5557 | |
5558 | switch (bptype) | |
c906108c SS |
5559 | { |
5560 | case bp_none: | |
628fe4e4 | 5561 | break; |
c906108c SS |
5562 | case bp_breakpoint: |
5563 | case bp_hardware_breakpoint: | |
7c16b83e | 5564 | case bp_single_step: |
c906108c SS |
5565 | case bp_until: |
5566 | case bp_finish: | |
a9b3a50f | 5567 | case bp_shlib_event: |
c906108c SS |
5568 | if (bs->stop) |
5569 | { | |
5570 | if (bs->print) | |
628fe4e4 | 5571 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5572 | else |
628fe4e4 | 5573 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5574 | } |
5575 | else | |
628fe4e4 | 5576 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5577 | break; |
5578 | case bp_watchpoint: | |
5579 | case bp_hardware_watchpoint: | |
5580 | case bp_read_watchpoint: | |
5581 | case bp_access_watchpoint: | |
5582 | if (bs->stop) | |
5583 | { | |
5584 | if (bs->print) | |
628fe4e4 | 5585 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5586 | else |
628fe4e4 | 5587 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5588 | } |
5589 | else | |
628fe4e4 JK |
5590 | { |
5591 | /* There was a watchpoint, but we're not stopping. | |
5592 | This requires no further action. */ | |
5593 | } | |
c906108c SS |
5594 | break; |
5595 | case bp_longjmp: | |
e2e4d78b | 5596 | case bp_longjmp_call_dummy: |
186c406b | 5597 | case bp_exception: |
0a39bb32 PA |
5598 | if (bs->stop) |
5599 | { | |
5600 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5601 | retval.is_longjmp = bptype != bp_exception; | |
5602 | } | |
5603 | else | |
5604 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5605 | break; |
5606 | case bp_longjmp_resume: | |
186c406b | 5607 | case bp_exception_resume: |
0a39bb32 PA |
5608 | if (bs->stop) |
5609 | { | |
5610 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5611 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5612 | } | |
5613 | else | |
5614 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5615 | break; |
5616 | case bp_step_resume: | |
5617 | if (bs->stop) | |
628fe4e4 JK |
5618 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5619 | else | |
c906108c | 5620 | { |
628fe4e4 JK |
5621 | /* It is for the wrong frame. */ |
5622 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5623 | } |
c906108c | 5624 | break; |
2c03e5be PA |
5625 | case bp_hp_step_resume: |
5626 | if (bs->stop) | |
5627 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5628 | else | |
5629 | { | |
5630 | /* It is for the wrong frame. */ | |
5631 | this_action = BPSTAT_WHAT_SINGLE; | |
5632 | } | |
5633 | break; | |
c906108c | 5634 | case bp_watchpoint_scope: |
c4093a6a | 5635 | case bp_thread_event: |
1900040c | 5636 | case bp_overlay_event: |
0fd8e87f | 5637 | case bp_longjmp_master: |
aa7d318d | 5638 | case bp_std_terminate_master: |
186c406b | 5639 | case bp_exception_master: |
628fe4e4 | 5640 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5641 | break; |
ce78b96d | 5642 | case bp_catchpoint: |
c5aa993b JM |
5643 | if (bs->stop) |
5644 | { | |
5645 | if (bs->print) | |
628fe4e4 | 5646 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5647 | else |
628fe4e4 | 5648 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5649 | } |
5650 | else | |
628fe4e4 JK |
5651 | { |
5652 | /* There was a catchpoint, but we're not stopping. | |
5653 | This requires no further action. */ | |
5654 | } | |
5655 | break; | |
628fe4e4 | 5656 | case bp_jit_event: |
628fe4e4 | 5657 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5658 | break; |
c906108c | 5659 | case bp_call_dummy: |
53a5351d JM |
5660 | /* Make sure the action is stop (silent or noisy), |
5661 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5662 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5663 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5664 | break; |
5665 | case bp_std_terminate: | |
5666 | /* Make sure the action is stop (silent or noisy), | |
5667 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5668 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5669 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5670 | break; |
1042e4c0 | 5671 | case bp_tracepoint: |
7a697b8d | 5672 | case bp_fast_tracepoint: |
0fb4aa4b | 5673 | case bp_static_tracepoint: |
1042e4c0 SS |
5674 | /* Tracepoint hits should not be reported back to GDB, and |
5675 | if one got through somehow, it should have been filtered | |
5676 | out already. */ | |
5677 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5678 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5679 | break; |
5680 | case bp_gnu_ifunc_resolver: | |
5681 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5682 | this_action = BPSTAT_WHAT_SINGLE; | |
5683 | break; | |
5684 | case bp_gnu_ifunc_resolver_return: | |
5685 | /* The breakpoint will be removed, execution will restart from the | |
5686 | PC of the former breakpoint. */ | |
5687 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5688 | break; | |
e7e0cddf SS |
5689 | |
5690 | case bp_dprintf: | |
a11cfd87 HZ |
5691 | if (bs->stop) |
5692 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5693 | else | |
5694 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5695 | break; |
5696 | ||
628fe4e4 JK |
5697 | default: |
5698 | internal_error (__FILE__, __LINE__, | |
5699 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5700 | } |
628fe4e4 | 5701 | |
325fac50 | 5702 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5703 | } |
628fe4e4 | 5704 | |
243a9253 PA |
5705 | return retval; |
5706 | } | |
628fe4e4 | 5707 | |
243a9253 PA |
5708 | void |
5709 | bpstat_run_callbacks (bpstat bs_head) | |
5710 | { | |
5711 | bpstat bs; | |
628fe4e4 | 5712 | |
0e30163f JK |
5713 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5714 | { | |
5715 | struct breakpoint *b = bs->breakpoint_at; | |
5716 | ||
5717 | if (b == NULL) | |
5718 | continue; | |
5719 | switch (b->type) | |
5720 | { | |
243a9253 PA |
5721 | case bp_jit_event: |
5722 | handle_jit_event (); | |
5723 | break; | |
0e30163f JK |
5724 | case bp_gnu_ifunc_resolver: |
5725 | gnu_ifunc_resolver_stop (b); | |
5726 | break; | |
5727 | case bp_gnu_ifunc_resolver_return: | |
5728 | gnu_ifunc_resolver_return_stop (b); | |
5729 | break; | |
5730 | } | |
5731 | } | |
c906108c SS |
5732 | } |
5733 | ||
5734 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5735 | without hardware support). This isn't related to a specific bpstat, | |
5736 | just to things like whether watchpoints are set. */ | |
5737 | ||
c5aa993b | 5738 | int |
fba45db2 | 5739 | bpstat_should_step (void) |
c906108c SS |
5740 | { |
5741 | struct breakpoint *b; | |
cc59ec59 | 5742 | |
c906108c | 5743 | ALL_BREAKPOINTS (b) |
717a8278 | 5744 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5745 | return 1; |
c906108c SS |
5746 | return 0; |
5747 | } | |
5748 | ||
67822962 PA |
5749 | int |
5750 | bpstat_causes_stop (bpstat bs) | |
5751 | { | |
5752 | for (; bs != NULL; bs = bs->next) | |
5753 | if (bs->stop) | |
5754 | return 1; | |
5755 | ||
5756 | return 0; | |
5757 | } | |
5758 | ||
c906108c | 5759 | \f |
c5aa993b | 5760 | |
170b53b2 UW |
5761 | /* Compute a string of spaces suitable to indent the next line |
5762 | so it starts at the position corresponding to the table column | |
5763 | named COL_NAME in the currently active table of UIOUT. */ | |
5764 | ||
5765 | static char * | |
5766 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5767 | { | |
5768 | static char wrap_indent[80]; | |
5769 | int i, total_width, width, align; | |
c5209615 | 5770 | const char *text; |
170b53b2 UW |
5771 | |
5772 | total_width = 0; | |
112e8700 | 5773 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5774 | { |
5775 | if (strcmp (text, col_name) == 0) | |
5776 | { | |
5777 | gdb_assert (total_width < sizeof wrap_indent); | |
5778 | memset (wrap_indent, ' ', total_width); | |
5779 | wrap_indent[total_width] = 0; | |
5780 | ||
5781 | return wrap_indent; | |
5782 | } | |
5783 | ||
5784 | total_width += width + 1; | |
5785 | } | |
5786 | ||
5787 | return NULL; | |
5788 | } | |
5789 | ||
b775012e LM |
5790 | /* Determine if the locations of this breakpoint will have their conditions |
5791 | evaluated by the target, host or a mix of both. Returns the following: | |
5792 | ||
5793 | "host": Host evals condition. | |
5794 | "host or target": Host or Target evals condition. | |
5795 | "target": Target evals condition. | |
5796 | */ | |
5797 | ||
5798 | static const char * | |
5799 | bp_condition_evaluator (struct breakpoint *b) | |
5800 | { | |
5801 | struct bp_location *bl; | |
5802 | char host_evals = 0; | |
5803 | char target_evals = 0; | |
5804 | ||
5805 | if (!b) | |
5806 | return NULL; | |
5807 | ||
5808 | if (!is_breakpoint (b)) | |
5809 | return NULL; | |
5810 | ||
5811 | if (gdb_evaluates_breakpoint_condition_p () | |
5812 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5813 | return condition_evaluation_host; | |
5814 | ||
5815 | for (bl = b->loc; bl; bl = bl->next) | |
5816 | { | |
5817 | if (bl->cond_bytecode) | |
5818 | target_evals++; | |
5819 | else | |
5820 | host_evals++; | |
5821 | } | |
5822 | ||
5823 | if (host_evals && target_evals) | |
5824 | return condition_evaluation_both; | |
5825 | else if (target_evals) | |
5826 | return condition_evaluation_target; | |
5827 | else | |
5828 | return condition_evaluation_host; | |
5829 | } | |
5830 | ||
5831 | /* Determine the breakpoint location's condition evaluator. This is | |
5832 | similar to bp_condition_evaluator, but for locations. */ | |
5833 | ||
5834 | static const char * | |
5835 | bp_location_condition_evaluator (struct bp_location *bl) | |
5836 | { | |
5837 | if (bl && !is_breakpoint (bl->owner)) | |
5838 | return NULL; | |
5839 | ||
5840 | if (gdb_evaluates_breakpoint_condition_p () | |
5841 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5842 | return condition_evaluation_host; | |
5843 | ||
5844 | if (bl && bl->cond_bytecode) | |
5845 | return condition_evaluation_target; | |
5846 | else | |
5847 | return condition_evaluation_host; | |
5848 | } | |
5849 | ||
859825b8 JK |
5850 | /* Print the LOC location out of the list of B->LOC locations. */ |
5851 | ||
170b53b2 UW |
5852 | static void |
5853 | print_breakpoint_location (struct breakpoint *b, | |
5854 | struct bp_location *loc) | |
0d381245 | 5855 | { |
79a45e25 | 5856 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5857 | |
5858 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5859 | |
859825b8 JK |
5860 | if (loc != NULL && loc->shlib_disabled) |
5861 | loc = NULL; | |
5862 | ||
6c95b8df PA |
5863 | if (loc != NULL) |
5864 | set_current_program_space (loc->pspace); | |
5865 | ||
56435ebe | 5866 | if (b->display_canonical) |
d28cd78a | 5867 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5868 | else if (loc && loc->symtab) |
0d381245 | 5869 | { |
4a27f119 KS |
5870 | const struct symbol *sym = loc->symbol; |
5871 | ||
5872 | if (sym == NULL) | |
5873 | sym = find_pc_sect_function (loc->address, loc->section); | |
5874 | ||
0d381245 VP |
5875 | if (sym) |
5876 | { | |
112e8700 SM |
5877 | uiout->text ("in "); |
5878 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5879 | uiout->text (" "); | |
5880 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5881 | uiout->text ("at "); | |
0d381245 | 5882 | } |
112e8700 | 5883 | uiout->field_string ("file", |
05cba821 | 5884 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5885 | uiout->text (":"); |
05cba821 | 5886 | |
112e8700 SM |
5887 | if (uiout->is_mi_like_p ()) |
5888 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5889 | |
112e8700 | 5890 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5891 | } |
859825b8 | 5892 | else if (loc) |
0d381245 | 5893 | { |
d7e74731 | 5894 | string_file stb; |
170b53b2 | 5895 | |
d7e74731 | 5896 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5897 | demangle, ""); |
112e8700 | 5898 | uiout->field_stream ("at", stb); |
0d381245 | 5899 | } |
859825b8 | 5900 | else |
f00aae0f | 5901 | { |
d28cd78a TT |
5902 | uiout->field_string ("pending", |
5903 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5904 | /* If extra_string is available, it could be holding a condition |
5905 | or dprintf arguments. In either case, make sure it is printed, | |
5906 | too, but only for non-MI streams. */ | |
112e8700 | 5907 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5908 | { |
5909 | if (b->type == bp_dprintf) | |
112e8700 | 5910 | uiout->text (","); |
f00aae0f | 5911 | else |
112e8700 SM |
5912 | uiout->text (" "); |
5913 | uiout->text (b->extra_string); | |
f00aae0f KS |
5914 | } |
5915 | } | |
6c95b8df | 5916 | |
b775012e LM |
5917 | if (loc && is_breakpoint (b) |
5918 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5919 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5920 | { | |
112e8700 SM |
5921 | uiout->text (" ("); |
5922 | uiout->field_string ("evaluated-by", | |
b775012e | 5923 | bp_location_condition_evaluator (loc)); |
112e8700 | 5924 | uiout->text (")"); |
b775012e | 5925 | } |
0d381245 VP |
5926 | } |
5927 | ||
269b11a2 PA |
5928 | static const char * |
5929 | bptype_string (enum bptype type) | |
c906108c | 5930 | { |
c4093a6a JM |
5931 | struct ep_type_description |
5932 | { | |
5933 | enum bptype type; | |
a121b7c1 | 5934 | const char *description; |
c4093a6a JM |
5935 | }; |
5936 | static struct ep_type_description bptypes[] = | |
c906108c | 5937 | { |
c5aa993b JM |
5938 | {bp_none, "?deleted?"}, |
5939 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5940 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5941 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5942 | {bp_until, "until"}, |
5943 | {bp_finish, "finish"}, | |
5944 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5945 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5946 | {bp_read_watchpoint, "read watchpoint"}, |
5947 | {bp_access_watchpoint, "acc watchpoint"}, | |
5948 | {bp_longjmp, "longjmp"}, | |
5949 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5950 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5951 | {bp_exception, "exception"}, |
5952 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5953 | {bp_step_resume, "step resume"}, |
2c03e5be | 5954 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5955 | {bp_watchpoint_scope, "watchpoint scope"}, |
5956 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5957 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5958 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5959 | {bp_thread_event, "thread events"}, |
1900040c | 5960 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5961 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5962 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5963 | {bp_exception_master, "exception master"}, |
ce78b96d | 5964 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5965 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5966 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5967 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5968 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5969 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5970 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5971 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5972 | }; |
269b11a2 PA |
5973 | |
5974 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5975 | || ((int) type != bptypes[(int) type].type)) | |
5976 | internal_error (__FILE__, __LINE__, | |
5977 | _("bptypes table does not describe type #%d."), | |
5978 | (int) type); | |
5979 | ||
5980 | return bptypes[(int) type].description; | |
5981 | } | |
5982 | ||
998580f1 MK |
5983 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5984 | For CLI, prefix the list with the string 'inf'. */ | |
5985 | ||
5986 | static void | |
5987 | output_thread_groups (struct ui_out *uiout, | |
5988 | const char *field_name, | |
5c632425 | 5989 | const std::vector<int> &inf_nums, |
998580f1 MK |
5990 | int mi_only) |
5991 | { | |
112e8700 | 5992 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5993 | |
5994 | /* For backward compatibility, don't display inferiors in CLI unless | |
5995 | there are several. Always display them for MI. */ | |
5996 | if (!is_mi && mi_only) | |
5997 | return; | |
5998 | ||
10f489e5 | 5999 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6000 | |
5c632425 | 6001 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6002 | { |
6003 | if (is_mi) | |
6004 | { | |
6005 | char mi_group[10]; | |
6006 | ||
5c632425 | 6007 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6008 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6009 | } |
6010 | else | |
6011 | { | |
6012 | if (i == 0) | |
112e8700 | 6013 | uiout->text (" inf "); |
998580f1 | 6014 | else |
112e8700 | 6015 | uiout->text (", "); |
998580f1 | 6016 | |
5c632425 | 6017 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6018 | } |
6019 | } | |
998580f1 MK |
6020 | } |
6021 | ||
269b11a2 PA |
6022 | /* Print B to gdb_stdout. */ |
6023 | ||
6024 | static void | |
6025 | print_one_breakpoint_location (struct breakpoint *b, | |
6026 | struct bp_location *loc, | |
6027 | int loc_number, | |
6028 | struct bp_location **last_loc, | |
269b11a2 PA |
6029 | int allflag) |
6030 | { | |
6031 | struct command_line *l; | |
c2c6d25f | 6032 | static char bpenables[] = "nynny"; |
c906108c | 6033 | |
79a45e25 | 6034 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6035 | int header_of_multiple = 0; |
6036 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6037 | struct value_print_options opts; |
6038 | ||
6039 | get_user_print_options (&opts); | |
0d381245 VP |
6040 | |
6041 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6042 | /* See comment in print_one_breakpoint concerning treatment of |
6043 | breakpoints with single disabled location. */ | |
0d381245 VP |
6044 | if (loc == NULL |
6045 | && (b->loc != NULL | |
6046 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6047 | header_of_multiple = 1; | |
6048 | if (loc == NULL) | |
6049 | loc = b->loc; | |
6050 | ||
c4093a6a JM |
6051 | annotate_record (); |
6052 | ||
6053 | /* 1 */ | |
6054 | annotate_field (0); | |
0d381245 VP |
6055 | if (part_of_multiple) |
6056 | { | |
6057 | char *formatted; | |
0c6773c1 | 6058 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6059 | uiout->field_string ("number", formatted); |
0d381245 VP |
6060 | xfree (formatted); |
6061 | } | |
6062 | else | |
6063 | { | |
112e8700 | 6064 | uiout->field_int ("number", b->number); |
0d381245 | 6065 | } |
c4093a6a JM |
6066 | |
6067 | /* 2 */ | |
6068 | annotate_field (1); | |
0d381245 | 6069 | if (part_of_multiple) |
112e8700 | 6070 | uiout->field_skip ("type"); |
269b11a2 | 6071 | else |
112e8700 | 6072 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6073 | |
6074 | /* 3 */ | |
6075 | annotate_field (2); | |
0d381245 | 6076 | if (part_of_multiple) |
112e8700 | 6077 | uiout->field_skip ("disp"); |
0d381245 | 6078 | else |
112e8700 | 6079 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6080 | |
c4093a6a JM |
6081 | |
6082 | /* 4 */ | |
6083 | annotate_field (3); | |
0d381245 | 6084 | if (part_of_multiple) |
112e8700 | 6085 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6086 | else |
112e8700 SM |
6087 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6088 | uiout->spaces (2); | |
0d381245 | 6089 | |
c4093a6a JM |
6090 | |
6091 | /* 5 and 6 */ | |
3086aeae | 6092 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6093 | { |
4a64f543 MS |
6094 | /* Although the print_one can possibly print all locations, |
6095 | calling it here is not likely to get any nice result. So, | |
6096 | make sure there's just one location. */ | |
0d381245 | 6097 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6098 | b->ops->print_one (b, last_loc); |
0d381245 | 6099 | } |
3086aeae DJ |
6100 | else |
6101 | switch (b->type) | |
6102 | { | |
6103 | case bp_none: | |
6104 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6105 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6106 | break; |
c906108c | 6107 | |
3086aeae DJ |
6108 | case bp_watchpoint: |
6109 | case bp_hardware_watchpoint: | |
6110 | case bp_read_watchpoint: | |
6111 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6112 | { |
6113 | struct watchpoint *w = (struct watchpoint *) b; | |
6114 | ||
6115 | /* Field 4, the address, is omitted (which makes the columns | |
6116 | not line up too nicely with the headers, but the effect | |
6117 | is relatively readable). */ | |
6118 | if (opts.addressprint) | |
112e8700 | 6119 | uiout->field_skip ("addr"); |
3a5c3e22 | 6120 | annotate_field (5); |
112e8700 | 6121 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6122 | } |
3086aeae DJ |
6123 | break; |
6124 | ||
3086aeae DJ |
6125 | case bp_breakpoint: |
6126 | case bp_hardware_breakpoint: | |
7c16b83e | 6127 | case bp_single_step: |
3086aeae DJ |
6128 | case bp_until: |
6129 | case bp_finish: | |
6130 | case bp_longjmp: | |
6131 | case bp_longjmp_resume: | |
e2e4d78b | 6132 | case bp_longjmp_call_dummy: |
186c406b TT |
6133 | case bp_exception: |
6134 | case bp_exception_resume: | |
3086aeae | 6135 | case bp_step_resume: |
2c03e5be | 6136 | case bp_hp_step_resume: |
3086aeae DJ |
6137 | case bp_watchpoint_scope: |
6138 | case bp_call_dummy: | |
aa7d318d | 6139 | case bp_std_terminate: |
3086aeae DJ |
6140 | case bp_shlib_event: |
6141 | case bp_thread_event: | |
6142 | case bp_overlay_event: | |
0fd8e87f | 6143 | case bp_longjmp_master: |
aa7d318d | 6144 | case bp_std_terminate_master: |
186c406b | 6145 | case bp_exception_master: |
1042e4c0 | 6146 | case bp_tracepoint: |
7a697b8d | 6147 | case bp_fast_tracepoint: |
0fb4aa4b | 6148 | case bp_static_tracepoint: |
e7e0cddf | 6149 | case bp_dprintf: |
4efc6507 | 6150 | case bp_jit_event: |
0e30163f JK |
6151 | case bp_gnu_ifunc_resolver: |
6152 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6153 | if (opts.addressprint) |
3086aeae DJ |
6154 | { |
6155 | annotate_field (4); | |
54e52265 | 6156 | if (header_of_multiple) |
112e8700 | 6157 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6158 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6159 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6160 | else |
112e8700 | 6161 | uiout->field_core_addr ("addr", |
5af949e3 | 6162 | loc->gdbarch, loc->address); |
3086aeae DJ |
6163 | } |
6164 | annotate_field (5); | |
0d381245 | 6165 | if (!header_of_multiple) |
170b53b2 | 6166 | print_breakpoint_location (b, loc); |
0d381245 | 6167 | if (b->loc) |
a6d9a66e | 6168 | *last_loc = b->loc; |
3086aeae DJ |
6169 | break; |
6170 | } | |
c906108c | 6171 | |
6c95b8df | 6172 | |
998580f1 | 6173 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6174 | { |
6175 | struct inferior *inf; | |
5c632425 | 6176 | std::vector<int> inf_nums; |
998580f1 | 6177 | int mi_only = 1; |
6c95b8df | 6178 | |
998580f1 | 6179 | ALL_INFERIORS (inf) |
6c95b8df PA |
6180 | { |
6181 | if (inf->pspace == loc->pspace) | |
5c632425 | 6182 | inf_nums.push_back (inf->num); |
6c95b8df | 6183 | } |
998580f1 MK |
6184 | |
6185 | /* For backward compatibility, don't display inferiors in CLI unless | |
6186 | there are several. Always display for MI. */ | |
6187 | if (allflag | |
6188 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6189 | && (number_of_program_spaces () > 1 | |
6190 | || number_of_inferiors () > 1) | |
6191 | /* LOC is for existing B, it cannot be in | |
6192 | moribund_locations and thus having NULL OWNER. */ | |
6193 | && loc->owner->type != bp_catchpoint)) | |
6194 | mi_only = 0; | |
5c632425 | 6195 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6196 | } |
6197 | ||
4a306c9a | 6198 | if (!part_of_multiple) |
c4093a6a | 6199 | { |
4a306c9a JB |
6200 | if (b->thread != -1) |
6201 | { | |
6202 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6203 | "stop only in" line a little further down. */ |
112e8700 SM |
6204 | uiout->text (" thread "); |
6205 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6206 | } |
6207 | else if (b->task != 0) | |
6208 | { | |
112e8700 SM |
6209 | uiout->text (" task "); |
6210 | uiout->field_int ("task", b->task); | |
4a306c9a | 6211 | } |
c4093a6a | 6212 | } |
f1310107 | 6213 | |
112e8700 | 6214 | uiout->text ("\n"); |
f1310107 | 6215 | |
348d480f | 6216 | if (!part_of_multiple) |
f1310107 TJB |
6217 | b->ops->print_one_detail (b, uiout); |
6218 | ||
0d381245 | 6219 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6220 | { |
6221 | annotate_field (6); | |
112e8700 | 6222 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6223 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6224 | the frame ID. */ |
112e8700 | 6225 | uiout->field_core_addr ("frame", |
5af949e3 | 6226 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6227 | uiout->text ("\n"); |
c4093a6a JM |
6228 | } |
6229 | ||
28010a5d | 6230 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6231 | { |
6232 | annotate_field (7); | |
d77f58be | 6233 | if (is_tracepoint (b)) |
112e8700 | 6234 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6235 | else |
112e8700 SM |
6236 | uiout->text ("\tstop only if "); |
6237 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6238 | |
6239 | /* Print whether the target is doing the breakpoint's condition | |
6240 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6241 | if (is_breakpoint (b) | |
6242 | && breakpoint_condition_evaluation_mode () | |
6243 | == condition_evaluation_target) | |
6244 | { | |
112e8700 SM |
6245 | uiout->text (" ("); |
6246 | uiout->field_string ("evaluated-by", | |
b775012e | 6247 | bp_condition_evaluator (b)); |
112e8700 | 6248 | uiout->text (" evals)"); |
b775012e | 6249 | } |
112e8700 | 6250 | uiout->text ("\n"); |
0101ce28 JJ |
6251 | } |
6252 | ||
0d381245 | 6253 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6254 | { |
4a64f543 | 6255 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6256 | uiout->text ("\tstop only in thread "); |
6257 | if (uiout->is_mi_like_p ()) | |
6258 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6259 | else |
6260 | { | |
6261 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6262 | ||
112e8700 | 6263 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6264 | } |
112e8700 | 6265 | uiout->text ("\n"); |
c4093a6a JM |
6266 | } |
6267 | ||
556ec64d YQ |
6268 | if (!part_of_multiple) |
6269 | { | |
6270 | if (b->hit_count) | |
31f56a27 YQ |
6271 | { |
6272 | /* FIXME should make an annotation for this. */ | |
6273 | if (is_catchpoint (b)) | |
112e8700 | 6274 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6275 | else if (is_tracepoint (b)) |
112e8700 | 6276 | uiout->text ("\ttracepoint"); |
31f56a27 | 6277 | else |
112e8700 SM |
6278 | uiout->text ("\tbreakpoint"); |
6279 | uiout->text (" already hit "); | |
6280 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6281 | if (b->hit_count == 1) |
112e8700 | 6282 | uiout->text (" time\n"); |
31f56a27 | 6283 | else |
112e8700 | 6284 | uiout->text (" times\n"); |
31f56a27 | 6285 | } |
556ec64d YQ |
6286 | else |
6287 | { | |
31f56a27 | 6288 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6289 | if (uiout->is_mi_like_p ()) |
6290 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6291 | } |
6292 | } | |
8b93c638 | 6293 | |
0d381245 | 6294 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6295 | { |
6296 | annotate_field (8); | |
112e8700 SM |
6297 | uiout->text ("\tignore next "); |
6298 | uiout->field_int ("ignore", b->ignore_count); | |
6299 | uiout->text (" hits\n"); | |
c4093a6a | 6300 | } |
059fb39f | 6301 | |
816338b5 SS |
6302 | /* Note that an enable count of 1 corresponds to "enable once" |
6303 | behavior, which is reported by the combination of enablement and | |
6304 | disposition, so we don't need to mention it here. */ | |
6305 | if (!part_of_multiple && b->enable_count > 1) | |
6306 | { | |
6307 | annotate_field (8); | |
112e8700 | 6308 | uiout->text ("\tdisable after "); |
816338b5 SS |
6309 | /* Tweak the wording to clarify that ignore and enable counts |
6310 | are distinct, and have additive effect. */ | |
6311 | if (b->ignore_count) | |
112e8700 | 6312 | uiout->text ("additional "); |
816338b5 | 6313 | else |
112e8700 SM |
6314 | uiout->text ("next "); |
6315 | uiout->field_int ("enable", b->enable_count); | |
6316 | uiout->text (" hits\n"); | |
816338b5 SS |
6317 | } |
6318 | ||
f196051f SS |
6319 | if (!part_of_multiple && is_tracepoint (b)) |
6320 | { | |
6321 | struct tracepoint *tp = (struct tracepoint *) b; | |
6322 | ||
6323 | if (tp->traceframe_usage) | |
6324 | { | |
112e8700 SM |
6325 | uiout->text ("\ttrace buffer usage "); |
6326 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6327 | uiout->text (" bytes\n"); | |
f196051f SS |
6328 | } |
6329 | } | |
d3ce09f5 | 6330 | |
d1b0a7bf | 6331 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6332 | if (!part_of_multiple && l) |
c4093a6a JM |
6333 | { |
6334 | annotate_field (9); | |
2e783024 | 6335 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6336 | print_command_lines (uiout, l, 4); |
c4093a6a | 6337 | } |
d24317b4 | 6338 | |
d9b3f62e | 6339 | if (is_tracepoint (b)) |
1042e4c0 | 6340 | { |
d9b3f62e PA |
6341 | struct tracepoint *t = (struct tracepoint *) b; |
6342 | ||
6343 | if (!part_of_multiple && t->pass_count) | |
6344 | { | |
6345 | annotate_field (10); | |
112e8700 SM |
6346 | uiout->text ("\tpass count "); |
6347 | uiout->field_int ("pass", t->pass_count); | |
6348 | uiout->text (" \n"); | |
d9b3f62e | 6349 | } |
f2a8bc8a YQ |
6350 | |
6351 | /* Don't display it when tracepoint or tracepoint location is | |
6352 | pending. */ | |
6353 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6354 | { | |
6355 | annotate_field (11); | |
6356 | ||
112e8700 SM |
6357 | if (uiout->is_mi_like_p ()) |
6358 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6359 | loc->inserted ? "y" : "n"); |
6360 | else | |
6361 | { | |
6362 | if (loc->inserted) | |
112e8700 | 6363 | uiout->text ("\t"); |
f2a8bc8a | 6364 | else |
112e8700 SM |
6365 | uiout->text ("\tnot "); |
6366 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6367 | } |
6368 | } | |
1042e4c0 SS |
6369 | } |
6370 | ||
112e8700 | 6371 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6372 | { |
3a5c3e22 PA |
6373 | if (is_watchpoint (b)) |
6374 | { | |
6375 | struct watchpoint *w = (struct watchpoint *) b; | |
6376 | ||
112e8700 | 6377 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6378 | } |
f00aae0f | 6379 | else if (b->location != NULL |
d28cd78a | 6380 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6381 | uiout->field_string ("original-location", |
d28cd78a | 6382 | event_location_to_string (b->location.get ())); |
d24317b4 | 6383 | } |
c4093a6a | 6384 | } |
c5aa993b | 6385 | |
0d381245 VP |
6386 | static void |
6387 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6388 | struct bp_location **last_loc, |
6c95b8df | 6389 | int allflag) |
0d381245 | 6390 | { |
79a45e25 | 6391 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6392 | |
2e783024 TT |
6393 | { |
6394 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6395 | |
2e783024 TT |
6396 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6397 | } | |
0d381245 VP |
6398 | |
6399 | /* If this breakpoint has custom print function, | |
6400 | it's already printed. Otherwise, print individual | |
6401 | locations, if any. */ | |
6402 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6403 | { | |
4a64f543 MS |
6404 | /* If breakpoint has a single location that is disabled, we |
6405 | print it as if it had several locations, since otherwise it's | |
6406 | hard to represent "breakpoint enabled, location disabled" | |
6407 | situation. | |
6408 | ||
6409 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6410 | internally, that's not a property exposed to user. */ |
0d381245 | 6411 | if (b->loc |
a5606eee | 6412 | && !is_hardware_watchpoint (b) |
8d3788bd | 6413 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6414 | { |
6415 | struct bp_location *loc; | |
6416 | int n = 1; | |
8d3788bd | 6417 | |
0d381245 | 6418 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6419 | { |
2e783024 | 6420 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6421 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6422 | } |
0d381245 VP |
6423 | } |
6424 | } | |
6425 | } | |
6426 | ||
a6d9a66e UW |
6427 | static int |
6428 | breakpoint_address_bits (struct breakpoint *b) | |
6429 | { | |
6430 | int print_address_bits = 0; | |
6431 | struct bp_location *loc; | |
6432 | ||
c6d81124 PA |
6433 | /* Software watchpoints that aren't watching memory don't have an |
6434 | address to print. */ | |
6435 | if (is_no_memory_software_watchpoint (b)) | |
6436 | return 0; | |
6437 | ||
a6d9a66e UW |
6438 | for (loc = b->loc; loc; loc = loc->next) |
6439 | { | |
c7437ca6 PA |
6440 | int addr_bit; |
6441 | ||
c7437ca6 | 6442 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6443 | if (addr_bit > print_address_bits) |
6444 | print_address_bits = addr_bit; | |
6445 | } | |
6446 | ||
6447 | return print_address_bits; | |
6448 | } | |
0d381245 | 6449 | |
65630365 | 6450 | /* See breakpoint.h. */ |
c5aa993b | 6451 | |
65630365 PA |
6452 | void |
6453 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6454 | { |
a6d9a66e | 6455 | struct bp_location *dummy_loc = NULL; |
65630365 | 6456 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6457 | } |
c5aa993b | 6458 | |
09d682a4 TT |
6459 | /* Return true if this breakpoint was set by the user, false if it is |
6460 | internal or momentary. */ | |
6461 | ||
6462 | int | |
6463 | user_breakpoint_p (struct breakpoint *b) | |
6464 | { | |
46c6471b | 6465 | return b->number > 0; |
09d682a4 TT |
6466 | } |
6467 | ||
93daf339 TT |
6468 | /* See breakpoint.h. */ |
6469 | ||
6470 | int | |
6471 | pending_breakpoint_p (struct breakpoint *b) | |
6472 | { | |
6473 | return b->loc == NULL; | |
6474 | } | |
6475 | ||
7f3b0473 | 6476 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6477 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6478 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6479 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6480 | ones for which it returns non-zero. Return the total number of | |
6481 | breakpoints listed. */ | |
c906108c | 6482 | |
d77f58be | 6483 | static int |
4495129a | 6484 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6485 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6486 | { |
52f0bd74 | 6487 | struct breakpoint *b; |
a6d9a66e | 6488 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6489 | int nr_printable_breakpoints; |
79a45b7d | 6490 | struct value_print_options opts; |
a6d9a66e | 6491 | int print_address_bits = 0; |
269b11a2 | 6492 | int print_type_col_width = 14; |
79a45e25 | 6493 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6494 | |
79a45b7d TT |
6495 | get_user_print_options (&opts); |
6496 | ||
4a64f543 MS |
6497 | /* Compute the number of rows in the table, as well as the size |
6498 | required for address fields. */ | |
7f3b0473 AC |
6499 | nr_printable_breakpoints = 0; |
6500 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6501 | { |
6502 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6503 | if (filter && !filter (b)) | |
6504 | continue; | |
6505 | ||
6506 | /* If we have an "args" string, it is a list of breakpoints to | |
6507 | accept. Skip the others. */ | |
6508 | if (args != NULL && *args != '\0') | |
6509 | { | |
6510 | if (allflag && parse_and_eval_long (args) != b->number) | |
6511 | continue; | |
6512 | if (!allflag && !number_is_in_list (args, b->number)) | |
6513 | continue; | |
6514 | } | |
269b11a2 | 6515 | |
e5a67952 MS |
6516 | if (allflag || user_breakpoint_p (b)) |
6517 | { | |
6518 | int addr_bit, type_len; | |
a6d9a66e | 6519 | |
e5a67952 MS |
6520 | addr_bit = breakpoint_address_bits (b); |
6521 | if (addr_bit > print_address_bits) | |
6522 | print_address_bits = addr_bit; | |
269b11a2 | 6523 | |
e5a67952 MS |
6524 | type_len = strlen (bptype_string (b->type)); |
6525 | if (type_len > print_type_col_width) | |
6526 | print_type_col_width = type_len; | |
6527 | ||
6528 | nr_printable_breakpoints++; | |
6529 | } | |
6530 | } | |
7f3b0473 | 6531 | |
4a2b031d TT |
6532 | { |
6533 | ui_out_emit_table table_emitter (uiout, | |
6534 | opts.addressprint ? 6 : 5, | |
6535 | nr_printable_breakpoints, | |
6536 | "BreakpointTable"); | |
6537 | ||
6538 | if (nr_printable_breakpoints > 0) | |
6539 | annotate_breakpoints_headers (); | |
6540 | if (nr_printable_breakpoints > 0) | |
6541 | annotate_field (0); | |
6542 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6543 | if (nr_printable_breakpoints > 0) | |
6544 | annotate_field (1); | |
6545 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6546 | if (nr_printable_breakpoints > 0) | |
6547 | annotate_field (2); | |
6548 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6549 | if (nr_printable_breakpoints > 0) | |
6550 | annotate_field (3); | |
6551 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6552 | if (opts.addressprint) | |
6553 | { | |
6554 | if (nr_printable_breakpoints > 0) | |
6555 | annotate_field (4); | |
6556 | if (print_address_bits <= 32) | |
6557 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6558 | else | |
6559 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6560 | } | |
6561 | if (nr_printable_breakpoints > 0) | |
6562 | annotate_field (5); | |
6563 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6564 | uiout->table_body (); | |
6565 | if (nr_printable_breakpoints > 0) | |
6566 | annotate_breakpoints_table (); | |
6567 | ||
6568 | ALL_BREAKPOINTS (b) | |
6569 | { | |
6570 | QUIT; | |
6571 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6572 | if (filter && !filter (b)) | |
6573 | continue; | |
e5a67952 | 6574 | |
4a2b031d TT |
6575 | /* If we have an "args" string, it is a list of breakpoints to |
6576 | accept. Skip the others. */ | |
e5a67952 | 6577 | |
4a2b031d TT |
6578 | if (args != NULL && *args != '\0') |
6579 | { | |
6580 | if (allflag) /* maintenance info breakpoint */ | |
6581 | { | |
6582 | if (parse_and_eval_long (args) != b->number) | |
6583 | continue; | |
6584 | } | |
6585 | else /* all others */ | |
6586 | { | |
6587 | if (!number_is_in_list (args, b->number)) | |
6588 | continue; | |
6589 | } | |
6590 | } | |
6591 | /* We only print out user settable breakpoints unless the | |
6592 | allflag is set. */ | |
6593 | if (allflag || user_breakpoint_p (b)) | |
6594 | print_one_breakpoint (b, &last_loc, allflag); | |
6595 | } | |
6596 | } | |
698384cd | 6597 | |
7f3b0473 | 6598 | if (nr_printable_breakpoints == 0) |
c906108c | 6599 | { |
4a64f543 MS |
6600 | /* If there's a filter, let the caller decide how to report |
6601 | empty list. */ | |
d77f58be SS |
6602 | if (!filter) |
6603 | { | |
e5a67952 | 6604 | if (args == NULL || *args == '\0') |
112e8700 | 6605 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6606 | else |
112e8700 | 6607 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6608 | args); |
d77f58be | 6609 | } |
c906108c SS |
6610 | } |
6611 | else | |
c4093a6a | 6612 | { |
a6d9a66e UW |
6613 | if (last_loc && !server_command) |
6614 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6615 | } |
c906108c | 6616 | |
4a64f543 | 6617 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6618 | there have been breakpoints? */ |
c906108c | 6619 | annotate_breakpoints_table_end (); |
d77f58be SS |
6620 | |
6621 | return nr_printable_breakpoints; | |
c906108c SS |
6622 | } |
6623 | ||
ad443146 SS |
6624 | /* Display the value of default-collect in a way that is generally |
6625 | compatible with the breakpoint list. */ | |
6626 | ||
6627 | static void | |
6628 | default_collect_info (void) | |
6629 | { | |
79a45e25 PA |
6630 | struct ui_out *uiout = current_uiout; |
6631 | ||
ad443146 SS |
6632 | /* If it has no value (which is frequently the case), say nothing; a |
6633 | message like "No default-collect." gets in user's face when it's | |
6634 | not wanted. */ | |
6635 | if (!*default_collect) | |
6636 | return; | |
6637 | ||
6638 | /* The following phrase lines up nicely with per-tracepoint collect | |
6639 | actions. */ | |
112e8700 SM |
6640 | uiout->text ("default collect "); |
6641 | uiout->field_string ("default-collect", default_collect); | |
6642 | uiout->text (" \n"); | |
ad443146 SS |
6643 | } |
6644 | ||
c906108c | 6645 | static void |
0b39b52e | 6646 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6647 | { |
e5a67952 | 6648 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6649 | |
6650 | default_collect_info (); | |
d77f58be SS |
6651 | } |
6652 | ||
6653 | static void | |
1d12d88f | 6654 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6655 | { |
e5a67952 | 6656 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6657 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6658 | |
6659 | if (num_printed == 0) | |
6660 | { | |
e5a67952 | 6661 | if (args == NULL || *args == '\0') |
112e8700 | 6662 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6663 | else |
112e8700 | 6664 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6665 | } |
c906108c SS |
6666 | } |
6667 | ||
7a292a7a | 6668 | static void |
4495129a | 6669 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6670 | { |
e5a67952 | 6671 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6672 | |
6673 | default_collect_info (); | |
c906108c SS |
6674 | } |
6675 | ||
0d381245 | 6676 | static int |
714835d5 | 6677 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6678 | struct program_space *pspace, |
714835d5 | 6679 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6680 | { |
6681 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6682 | |
0d381245 VP |
6683 | for (; bl; bl = bl->next) |
6684 | { | |
6c95b8df PA |
6685 | if (bl->pspace == pspace |
6686 | && bl->address == pc | |
0d381245 VP |
6687 | && (!overlay_debugging || bl->section == section)) |
6688 | return 1; | |
6689 | } | |
6690 | return 0; | |
6691 | } | |
6692 | ||
672f9b60 | 6693 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6694 | concerns with logical breakpoints, so we match program spaces, not |
6695 | address spaces. */ | |
c906108c SS |
6696 | |
6697 | static void | |
6c95b8df PA |
6698 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6699 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6700 | struct obj_section *section, int thread) |
c906108c | 6701 | { |
52f0bd74 AC |
6702 | int others = 0; |
6703 | struct breakpoint *b; | |
c906108c SS |
6704 | |
6705 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6706 | others += (user_breakpoint_p (b) |
6707 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6708 | if (others > 0) |
6709 | { | |
a3f17187 AC |
6710 | if (others == 1) |
6711 | printf_filtered (_("Note: breakpoint ")); | |
6712 | else /* if (others == ???) */ | |
6713 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6714 | ALL_BREAKPOINTS (b) |
672f9b60 | 6715 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6716 | { |
6717 | others--; | |
6718 | printf_filtered ("%d", b->number); | |
6719 | if (b->thread == -1 && thread != -1) | |
6720 | printf_filtered (" (all threads)"); | |
6721 | else if (b->thread != -1) | |
6722 | printf_filtered (" (thread %d)", b->thread); | |
6723 | printf_filtered ("%s%s ", | |
059fb39f | 6724 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6725 | || b->enable_state == bp_call_disabled) |
0d381245 | 6726 | ? " (disabled)" |
0d381245 VP |
6727 | : ""), |
6728 | (others > 1) ? "," | |
6729 | : ((others == 1) ? " and" : "")); | |
6730 | } | |
a3f17187 | 6731 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6732 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6733 | printf_filtered (".\n"); |
6734 | } | |
6735 | } | |
6736 | \f | |
c906108c | 6737 | |
e4f237da | 6738 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6739 | BPT locations. For some breakpoint types, the locations' address members |
6740 | are irrelevant and it makes no sense to attempt to compare them to other | |
6741 | addresses (or use them for any other purpose either). | |
e4f237da | 6742 | |
4a64f543 | 6743 | More specifically, each of the following breakpoint types will |
244558af | 6744 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6745 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6746 | breakpoint location at address zero: |
e4f237da KB |
6747 | |
6748 | bp_watchpoint | |
2d134ed3 PA |
6749 | bp_catchpoint |
6750 | ||
6751 | */ | |
e4f237da KB |
6752 | |
6753 | static int | |
6754 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6755 | { | |
6756 | enum bptype type = bpt->type; | |
6757 | ||
2d134ed3 PA |
6758 | return (type != bp_watchpoint && type != bp_catchpoint); |
6759 | } | |
6760 | ||
6761 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6762 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6763 | ||
6764 | static int | |
4a64f543 MS |
6765 | watchpoint_locations_match (struct bp_location *loc1, |
6766 | struct bp_location *loc2) | |
2d134ed3 | 6767 | { |
3a5c3e22 PA |
6768 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6769 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6770 | ||
6771 | /* Both of them must exist. */ | |
6772 | gdb_assert (w1 != NULL); | |
6773 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6774 | |
4a64f543 MS |
6775 | /* If the target can evaluate the condition expression in hardware, |
6776 | then we we need to insert both watchpoints even if they are at | |
6777 | the same place. Otherwise the watchpoint will only trigger when | |
6778 | the condition of whichever watchpoint was inserted evaluates to | |
6779 | true, not giving a chance for GDB to check the condition of the | |
6780 | other watchpoint. */ | |
3a5c3e22 | 6781 | if ((w1->cond_exp |
4a64f543 MS |
6782 | && target_can_accel_watchpoint_condition (loc1->address, |
6783 | loc1->length, | |
0cf6dd15 | 6784 | loc1->watchpoint_type, |
4d01a485 | 6785 | w1->cond_exp.get ())) |
3a5c3e22 | 6786 | || (w2->cond_exp |
4a64f543 MS |
6787 | && target_can_accel_watchpoint_condition (loc2->address, |
6788 | loc2->length, | |
0cf6dd15 | 6789 | loc2->watchpoint_type, |
4d01a485 | 6790 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6791 | return 0; |
6792 | ||
85d721b8 PA |
6793 | /* Note that this checks the owner's type, not the location's. In |
6794 | case the target does not support read watchpoints, but does | |
6795 | support access watchpoints, we'll have bp_read_watchpoint | |
6796 | watchpoints with hw_access locations. Those should be considered | |
6797 | duplicates of hw_read locations. The hw_read locations will | |
6798 | become hw_access locations later. */ | |
2d134ed3 PA |
6799 | return (loc1->owner->type == loc2->owner->type |
6800 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6801 | && loc1->address == loc2->address | |
6802 | && loc1->length == loc2->length); | |
e4f237da KB |
6803 | } |
6804 | ||
31e77af2 | 6805 | /* See breakpoint.h. */ |
6c95b8df | 6806 | |
31e77af2 | 6807 | int |
accd0bcd YQ |
6808 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6809 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6810 | { |
f5656ead | 6811 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6812 | || aspace1 == aspace2) |
6813 | && addr1 == addr2); | |
6814 | } | |
6815 | ||
f1310107 TJB |
6816 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6817 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6818 | matches ASPACE2. On targets that have global breakpoints, the address | |
6819 | space doesn't really matter. */ | |
6820 | ||
6821 | static int | |
accd0bcd YQ |
6822 | breakpoint_address_match_range (const address_space *aspace1, |
6823 | CORE_ADDR addr1, | |
6824 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6825 | CORE_ADDR addr2) |
6826 | { | |
f5656ead | 6827 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6828 | || aspace1 == aspace2) |
6829 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6830 | } | |
6831 | ||
6832 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6833 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6834 | matches the breakpoint's address space. On targets that have global | |
6835 | breakpoints, the address space doesn't really matter. */ | |
6836 | ||
6837 | static int | |
6838 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6839 | const address_space *aspace, |
f1310107 TJB |
6840 | CORE_ADDR addr) |
6841 | { | |
6842 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6843 | aspace, addr) | |
6844 | || (bl->length | |
6845 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6846 | bl->address, bl->length, | |
6847 | aspace, addr))); | |
6848 | } | |
6849 | ||
d35ae833 PA |
6850 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6851 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6852 | match happens only if ASPACE matches the breakpoint's address | |
6853 | space. On targets that have global breakpoints, the address space | |
6854 | doesn't really matter. */ | |
6855 | ||
6856 | static int | |
6857 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6858 | const address_space *aspace, |
d35ae833 PA |
6859 | CORE_ADDR addr, int len) |
6860 | { | |
6861 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6862 | || bl->pspace->aspace == aspace) | |
6863 | { | |
6864 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6865 | ||
6866 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6867 | return 1; | |
6868 | } | |
6869 | return 0; | |
6870 | } | |
6871 | ||
1e4d1764 YQ |
6872 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6873 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6874 | true, otherwise returns false. */ | |
6875 | ||
6876 | static int | |
6877 | tracepoint_locations_match (struct bp_location *loc1, | |
6878 | struct bp_location *loc2) | |
6879 | { | |
6880 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6881 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6882 | locations at the same address of different tracepoints are regarded as | |
6883 | different locations. */ | |
6884 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6885 | else | |
6886 | return 0; | |
6887 | } | |
6888 | ||
2d134ed3 PA |
6889 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6890 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6891 | represent the same location. */ | |
6892 | ||
6893 | static int | |
4a64f543 MS |
6894 | breakpoint_locations_match (struct bp_location *loc1, |
6895 | struct bp_location *loc2) | |
2d134ed3 | 6896 | { |
2bdf28a0 JK |
6897 | int hw_point1, hw_point2; |
6898 | ||
6899 | /* Both of them must not be in moribund_locations. */ | |
6900 | gdb_assert (loc1->owner != NULL); | |
6901 | gdb_assert (loc2->owner != NULL); | |
6902 | ||
6903 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6904 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6905 | |
6906 | if (hw_point1 != hw_point2) | |
6907 | return 0; | |
6908 | else if (hw_point1) | |
6909 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6910 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6911 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6912 | else |
f1310107 TJB |
6913 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6914 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6915 | loc2->pspace->aspace, loc2->address) | |
6916 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6917 | } |
6918 | ||
76897487 KB |
6919 | static void |
6920 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6921 | int bnum, int have_bnum) | |
6922 | { | |
f63fbe86 MS |
6923 | /* The longest string possibly returned by hex_string_custom |
6924 | is 50 chars. These must be at least that big for safety. */ | |
6925 | char astr1[64]; | |
6926 | char astr2[64]; | |
76897487 | 6927 | |
bb599908 PH |
6928 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6929 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6930 | if (have_bnum) |
8a3fe4f8 | 6931 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6932 | bnum, astr1, astr2); |
6933 | else | |
8a3fe4f8 | 6934 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6935 | } |
6936 | ||
4a64f543 MS |
6937 | /* Adjust a breakpoint's address to account for architectural |
6938 | constraints on breakpoint placement. Return the adjusted address. | |
6939 | Note: Very few targets require this kind of adjustment. For most | |
6940 | targets, this function is simply the identity function. */ | |
76897487 KB |
6941 | |
6942 | static CORE_ADDR | |
a6d9a66e UW |
6943 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6944 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6945 | { |
a0de8c21 YQ |
6946 | if (bptype == bp_watchpoint |
6947 | || bptype == bp_hardware_watchpoint | |
6948 | || bptype == bp_read_watchpoint | |
6949 | || bptype == bp_access_watchpoint | |
6950 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6951 | { |
6952 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6953 | have their addresses modified. */ | |
6954 | return bpaddr; | |
6955 | } | |
7c16b83e PA |
6956 | else if (bptype == bp_single_step) |
6957 | { | |
6958 | /* Single-step breakpoints should not have their addresses | |
6959 | modified. If there's any architectural constrain that | |
6960 | applies to this address, then it should have already been | |
6961 | taken into account when the breakpoint was created in the | |
6962 | first place. If we didn't do this, stepping through e.g., | |
6963 | Thumb-2 IT blocks would break. */ | |
6964 | return bpaddr; | |
6965 | } | |
76897487 KB |
6966 | else |
6967 | { | |
a0de8c21 YQ |
6968 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6969 | ||
6970 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6971 | { | |
6972 | /* Some targets have architectural constraints on the placement | |
6973 | of breakpoint instructions. Obtain the adjusted address. */ | |
6974 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6975 | } | |
76897487 | 6976 | |
a0de8c21 | 6977 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6978 | |
6979 | /* An adjusted breakpoint address can significantly alter | |
6980 | a user's expectations. Print a warning if an adjustment | |
6981 | is required. */ | |
6982 | if (adjusted_bpaddr != bpaddr) | |
6983 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6984 | ||
6985 | return adjusted_bpaddr; | |
6986 | } | |
6987 | } | |
6988 | ||
5625a286 | 6989 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 6990 | { |
5625a286 | 6991 | bp_location *loc = this; |
7cc221ef | 6992 | |
348d480f PA |
6993 | gdb_assert (ops != NULL); |
6994 | ||
28010a5d PA |
6995 | loc->ops = ops; |
6996 | loc->owner = owner; | |
b775012e | 6997 | loc->cond_bytecode = NULL; |
0d381245 VP |
6998 | loc->shlib_disabled = 0; |
6999 | loc->enabled = 1; | |
e049a4b5 | 7000 | |
28010a5d | 7001 | switch (owner->type) |
e049a4b5 DJ |
7002 | { |
7003 | case bp_breakpoint: | |
7c16b83e | 7004 | case bp_single_step: |
e049a4b5 DJ |
7005 | case bp_until: |
7006 | case bp_finish: | |
7007 | case bp_longjmp: | |
7008 | case bp_longjmp_resume: | |
e2e4d78b | 7009 | case bp_longjmp_call_dummy: |
186c406b TT |
7010 | case bp_exception: |
7011 | case bp_exception_resume: | |
e049a4b5 | 7012 | case bp_step_resume: |
2c03e5be | 7013 | case bp_hp_step_resume: |
e049a4b5 DJ |
7014 | case bp_watchpoint_scope: |
7015 | case bp_call_dummy: | |
aa7d318d | 7016 | case bp_std_terminate: |
e049a4b5 DJ |
7017 | case bp_shlib_event: |
7018 | case bp_thread_event: | |
7019 | case bp_overlay_event: | |
4efc6507 | 7020 | case bp_jit_event: |
0fd8e87f | 7021 | case bp_longjmp_master: |
aa7d318d | 7022 | case bp_std_terminate_master: |
186c406b | 7023 | case bp_exception_master: |
0e30163f JK |
7024 | case bp_gnu_ifunc_resolver: |
7025 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7026 | case bp_dprintf: |
e049a4b5 | 7027 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7028 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7029 | break; |
7030 | case bp_hardware_breakpoint: | |
7031 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7032 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7033 | break; |
7034 | case bp_hardware_watchpoint: | |
7035 | case bp_read_watchpoint: | |
7036 | case bp_access_watchpoint: | |
7037 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7038 | break; | |
7039 | case bp_watchpoint: | |
ce78b96d | 7040 | case bp_catchpoint: |
15c3d785 PA |
7041 | case bp_tracepoint: |
7042 | case bp_fast_tracepoint: | |
0fb4aa4b | 7043 | case bp_static_tracepoint: |
e049a4b5 DJ |
7044 | loc->loc_type = bp_loc_other; |
7045 | break; | |
7046 | default: | |
e2e0b3e5 | 7047 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7048 | } |
7049 | ||
f431efe5 | 7050 | loc->refc = 1; |
28010a5d PA |
7051 | } |
7052 | ||
7053 | /* Allocate a struct bp_location. */ | |
7054 | ||
7055 | static struct bp_location * | |
7056 | allocate_bp_location (struct breakpoint *bpt) | |
7057 | { | |
348d480f PA |
7058 | return bpt->ops->allocate_location (bpt); |
7059 | } | |
7cc221ef | 7060 | |
f431efe5 PA |
7061 | static void |
7062 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7063 | { |
348d480f | 7064 | loc->ops->dtor (loc); |
4d01a485 | 7065 | delete loc; |
fe3f5fa8 VP |
7066 | } |
7067 | ||
f431efe5 PA |
7068 | /* Increment reference count. */ |
7069 | ||
7070 | static void | |
7071 | incref_bp_location (struct bp_location *bl) | |
7072 | { | |
7073 | ++bl->refc; | |
7074 | } | |
7075 | ||
7076 | /* Decrement reference count. If the reference count reaches 0, | |
7077 | destroy the bp_location. Sets *BLP to NULL. */ | |
7078 | ||
7079 | static void | |
7080 | decref_bp_location (struct bp_location **blp) | |
7081 | { | |
0807b50c PA |
7082 | gdb_assert ((*blp)->refc > 0); |
7083 | ||
f431efe5 PA |
7084 | if (--(*blp)->refc == 0) |
7085 | free_bp_location (*blp); | |
7086 | *blp = NULL; | |
7087 | } | |
7088 | ||
346774a9 | 7089 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7090 | |
b270e6f9 TT |
7091 | static breakpoint * |
7092 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7093 | { |
346774a9 | 7094 | struct breakpoint *b1; |
b270e6f9 | 7095 | struct breakpoint *result = b.get (); |
c906108c | 7096 | |
346774a9 PA |
7097 | /* Add this breakpoint to the end of the chain so that a list of |
7098 | breakpoints will come out in order of increasing numbers. */ | |
7099 | ||
7100 | b1 = breakpoint_chain; | |
7101 | if (b1 == 0) | |
b270e6f9 | 7102 | breakpoint_chain = b.release (); |
346774a9 PA |
7103 | else |
7104 | { | |
7105 | while (b1->next) | |
7106 | b1 = b1->next; | |
b270e6f9 | 7107 | b1->next = b.release (); |
346774a9 | 7108 | } |
b270e6f9 TT |
7109 | |
7110 | return result; | |
346774a9 PA |
7111 | } |
7112 | ||
7113 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7114 | ||
7115 | static void | |
7116 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7117 | struct gdbarch *gdbarch, | |
28010a5d | 7118 | enum bptype bptype, |
c0a91b2b | 7119 | const struct breakpoint_ops *ops) |
346774a9 | 7120 | { |
348d480f PA |
7121 | gdb_assert (ops != NULL); |
7122 | ||
28010a5d | 7123 | b->ops = ops; |
4d28f7a8 | 7124 | b->type = bptype; |
a6d9a66e | 7125 | b->gdbarch = gdbarch; |
c906108c SS |
7126 | b->language = current_language->la_language; |
7127 | b->input_radix = input_radix; | |
d0fb5eae | 7128 | b->related_breakpoint = b; |
346774a9 PA |
7129 | } |
7130 | ||
7131 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7132 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7133 | |
7134 | static struct breakpoint * | |
7135 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7136 | enum bptype bptype, |
c0a91b2b | 7137 | const struct breakpoint_ops *ops) |
346774a9 | 7138 | { |
3b0871f4 | 7139 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7140 | |
3b0871f4 | 7141 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7142 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7143 | } |
7144 | ||
0e30163f JK |
7145 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7146 | resolutions should be made as the user specified the location explicitly | |
7147 | enough. */ | |
7148 | ||
0d381245 | 7149 | static void |
0e30163f | 7150 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7151 | { |
2bdf28a0 JK |
7152 | gdb_assert (loc->owner != NULL); |
7153 | ||
0d381245 | 7154 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7155 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7156 | || is_tracepoint (loc->owner)) |
0d381245 | 7157 | { |
2c02bd72 | 7158 | const char *function_name; |
0e30163f | 7159 | |
3467ec66 | 7160 | if (loc->msymbol != NULL |
f50776aa PA |
7161 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7162 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7163 | && !explicit_loc) |
0e30163f JK |
7164 | { |
7165 | struct breakpoint *b = loc->owner; | |
7166 | ||
3467ec66 PA |
7167 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7168 | ||
7169 | if (b->type == bp_breakpoint && b->loc == loc | |
7170 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7171 | { |
7172 | /* Create only the whole new breakpoint of this type but do not | |
7173 | mess more complicated breakpoints with multiple locations. */ | |
7174 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7175 | /* Remember the resolver's address for use by the return |
7176 | breakpoint. */ | |
3467ec66 | 7177 | loc->related_address = loc->address; |
0e30163f JK |
7178 | } |
7179 | } | |
3467ec66 PA |
7180 | else |
7181 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7182 | |
2c02bd72 DE |
7183 | if (function_name) |
7184 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7185 | } |
7186 | } | |
7187 | ||
a6d9a66e | 7188 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7189 | struct gdbarch * |
a6d9a66e UW |
7190 | get_sal_arch (struct symtab_and_line sal) |
7191 | { | |
7192 | if (sal.section) | |
7193 | return get_objfile_arch (sal.section->objfile); | |
7194 | if (sal.symtab) | |
eb822aa6 | 7195 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7196 | |
7197 | return NULL; | |
7198 | } | |
7199 | ||
346774a9 PA |
7200 | /* Low level routine for partially initializing a breakpoint of type |
7201 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7202 | file name, and line number are provided by SAL. |
0d381245 VP |
7203 | |
7204 | It is expected that the caller will complete the initialization of | |
7205 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7206 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7207 | |
346774a9 PA |
7208 | static void |
7209 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7210 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7211 | const struct breakpoint_ops *ops) |
0d381245 | 7212 | { |
28010a5d | 7213 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7214 | |
3742cc8b | 7215 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7216 | |
6c95b8df PA |
7217 | if (bptype != bp_catchpoint) |
7218 | gdb_assert (sal.pspace != NULL); | |
7219 | ||
f8eba3c6 TT |
7220 | /* Store the program space that was used to set the breakpoint, |
7221 | except for ordinary breakpoints, which are independent of the | |
7222 | program space. */ | |
7223 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7224 | b->pspace = sal.pspace; | |
346774a9 | 7225 | } |
c906108c | 7226 | |
346774a9 PA |
7227 | /* set_raw_breakpoint is a low level routine for allocating and |
7228 | partially initializing a breakpoint of type BPTYPE. The newly | |
7229 | created breakpoint's address, section, source file name, and line | |
7230 | number are provided by SAL. The newly created and partially | |
7231 | initialized breakpoint is added to the breakpoint chain and | |
7232 | is also returned as the value of this function. | |
7233 | ||
7234 | It is expected that the caller will complete the initialization of | |
7235 | the newly created breakpoint struct as well as output any status | |
7236 | information regarding the creation of a new breakpoint. In | |
7237 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7238 | number! Care should be taken to not allow an error to occur | |
7239 | prior to completing the initialization of the breakpoint. If this | |
7240 | should happen, a bogus breakpoint will be left on the chain. */ | |
7241 | ||
7242 | struct breakpoint * | |
7243 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7244 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7245 | const struct breakpoint_ops *ops) |
346774a9 | 7246 | { |
3b0871f4 | 7247 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7248 | |
3b0871f4 | 7249 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7250 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7251 | } |
7252 | ||
53a5351d | 7253 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7254 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7255 | initiated the operation. */ | |
c906108c SS |
7256 | |
7257 | void | |
186c406b | 7258 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7259 | { |
35df4500 | 7260 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7261 | int thread = tp->global_num; |
0fd8e87f UW |
7262 | |
7263 | /* To avoid having to rescan all objfile symbols at every step, | |
7264 | we maintain a list of continually-inserted but always disabled | |
7265 | longjmp "master" breakpoints. Here, we simply create momentary | |
7266 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7267 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7268 | if (b->pspace == current_program_space |
186c406b TT |
7269 | && (b->type == bp_longjmp_master |
7270 | || b->type == bp_exception_master)) | |
0fd8e87f | 7271 | { |
06edf0c0 PA |
7272 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7273 | struct breakpoint *clone; | |
cc59ec59 | 7274 | |
e2e4d78b JK |
7275 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7276 | after their removal. */ | |
06edf0c0 | 7277 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7278 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7279 | clone->thread = thread; |
7280 | } | |
186c406b TT |
7281 | |
7282 | tp->initiating_frame = frame; | |
c906108c SS |
7283 | } |
7284 | ||
611c83ae | 7285 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7286 | void |
611c83ae | 7287 | delete_longjmp_breakpoint (int thread) |
c906108c | 7288 | { |
35df4500 | 7289 | struct breakpoint *b, *b_tmp; |
c906108c | 7290 | |
35df4500 | 7291 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7292 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7293 | { |
7294 | if (b->thread == thread) | |
7295 | delete_breakpoint (b); | |
7296 | } | |
c906108c SS |
7297 | } |
7298 | ||
f59f708a PA |
7299 | void |
7300 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7301 | { | |
7302 | struct breakpoint *b, *b_tmp; | |
7303 | ||
7304 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7305 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7306 | { | |
7307 | if (b->thread == thread) | |
7308 | b->disposition = disp_del_at_next_stop; | |
7309 | } | |
7310 | } | |
7311 | ||
e2e4d78b JK |
7312 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7313 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7314 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7315 | breakpoints. */ | |
7316 | ||
7317 | struct breakpoint * | |
7318 | set_longjmp_breakpoint_for_call_dummy (void) | |
7319 | { | |
7320 | struct breakpoint *b, *retval = NULL; | |
7321 | ||
7322 | ALL_BREAKPOINTS (b) | |
7323 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7324 | { | |
7325 | struct breakpoint *new_b; | |
7326 | ||
7327 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7328 | &momentary_breakpoint_ops, |
7329 | 1); | |
5d5658a1 | 7330 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7331 | |
7332 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7333 | ||
7334 | gdb_assert (new_b->related_breakpoint == new_b); | |
7335 | if (retval == NULL) | |
7336 | retval = new_b; | |
7337 | new_b->related_breakpoint = retval; | |
7338 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7339 | retval = retval->related_breakpoint; | |
7340 | retval->related_breakpoint = new_b; | |
7341 | } | |
7342 | ||
7343 | return retval; | |
7344 | } | |
7345 | ||
7346 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7347 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7348 | stack. |
7349 | ||
7350 | You should call this function only at places where it is safe to currently | |
7351 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7352 | frames. */ | |
7353 | ||
7354 | void | |
b67a2c6f | 7355 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7356 | { |
7357 | struct breakpoint *b, *b_tmp; | |
7358 | ||
7359 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7360 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7361 | { |
7362 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7363 | ||
7364 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7365 | dummy_b = dummy_b->related_breakpoint; | |
7366 | if (dummy_b->type != bp_call_dummy | |
7367 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7368 | continue; | |
7369 | ||
b67a2c6f | 7370 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7371 | |
7372 | while (b->related_breakpoint != b) | |
7373 | { | |
7374 | if (b_tmp == b->related_breakpoint) | |
7375 | b_tmp = b->related_breakpoint->next; | |
7376 | delete_breakpoint (b->related_breakpoint); | |
7377 | } | |
7378 | delete_breakpoint (b); | |
7379 | } | |
7380 | } | |
7381 | ||
1900040c MS |
7382 | void |
7383 | enable_overlay_breakpoints (void) | |
7384 | { | |
52f0bd74 | 7385 | struct breakpoint *b; |
1900040c MS |
7386 | |
7387 | ALL_BREAKPOINTS (b) | |
7388 | if (b->type == bp_overlay_event) | |
7389 | { | |
7390 | b->enable_state = bp_enabled; | |
44702360 | 7391 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7392 | overlay_events_enabled = 1; |
1900040c MS |
7393 | } |
7394 | } | |
7395 | ||
7396 | void | |
7397 | disable_overlay_breakpoints (void) | |
7398 | { | |
52f0bd74 | 7399 | struct breakpoint *b; |
1900040c MS |
7400 | |
7401 | ALL_BREAKPOINTS (b) | |
7402 | if (b->type == bp_overlay_event) | |
7403 | { | |
7404 | b->enable_state = bp_disabled; | |
44702360 | 7405 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7406 | overlay_events_enabled = 0; |
1900040c MS |
7407 | } |
7408 | } | |
7409 | ||
aa7d318d TT |
7410 | /* Set an active std::terminate breakpoint for each std::terminate |
7411 | master breakpoint. */ | |
7412 | void | |
7413 | set_std_terminate_breakpoint (void) | |
7414 | { | |
35df4500 | 7415 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7416 | |
35df4500 | 7417 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7418 | if (b->pspace == current_program_space |
7419 | && b->type == bp_std_terminate_master) | |
7420 | { | |
06edf0c0 | 7421 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7422 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7423 | } |
7424 | } | |
7425 | ||
7426 | /* Delete all the std::terminate breakpoints. */ | |
7427 | void | |
7428 | delete_std_terminate_breakpoint (void) | |
7429 | { | |
35df4500 | 7430 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7431 | |
35df4500 | 7432 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7433 | if (b->type == bp_std_terminate) |
7434 | delete_breakpoint (b); | |
7435 | } | |
7436 | ||
c4093a6a | 7437 | struct breakpoint * |
a6d9a66e | 7438 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7439 | { |
7440 | struct breakpoint *b; | |
c4093a6a | 7441 | |
06edf0c0 PA |
7442 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7443 | &internal_breakpoint_ops); | |
7444 | ||
b5de0fa7 | 7445 | b->enable_state = bp_enabled; |
f00aae0f | 7446 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7447 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7448 | |
44702360 | 7449 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7450 | |
c4093a6a JM |
7451 | return b; |
7452 | } | |
7453 | ||
0101ce28 JJ |
7454 | struct lang_and_radix |
7455 | { | |
7456 | enum language lang; | |
7457 | int radix; | |
7458 | }; | |
7459 | ||
4efc6507 DE |
7460 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7461 | ||
7462 | struct breakpoint * | |
7463 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7464 | { | |
2a7f3dff PA |
7465 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7466 | &internal_breakpoint_ops); | |
4efc6507 | 7467 | } |
0101ce28 | 7468 | |
03673fc7 PP |
7469 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7470 | ||
7471 | void | |
7472 | remove_jit_event_breakpoints (void) | |
7473 | { | |
7474 | struct breakpoint *b, *b_tmp; | |
7475 | ||
7476 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7477 | if (b->type == bp_jit_event | |
7478 | && b->loc->pspace == current_program_space) | |
7479 | delete_breakpoint (b); | |
7480 | } | |
7481 | ||
cae688ec JJ |
7482 | void |
7483 | remove_solib_event_breakpoints (void) | |
7484 | { | |
35df4500 | 7485 | struct breakpoint *b, *b_tmp; |
cae688ec | 7486 | |
35df4500 | 7487 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7488 | if (b->type == bp_shlib_event |
7489 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7490 | delete_breakpoint (b); |
7491 | } | |
7492 | ||
f37f681c PA |
7493 | /* See breakpoint.h. */ |
7494 | ||
7495 | void | |
7496 | remove_solib_event_breakpoints_at_next_stop (void) | |
7497 | { | |
7498 | struct breakpoint *b, *b_tmp; | |
7499 | ||
7500 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7501 | if (b->type == bp_shlib_event | |
7502 | && b->loc->pspace == current_program_space) | |
7503 | b->disposition = disp_del_at_next_stop; | |
7504 | } | |
7505 | ||
04086b45 PA |
7506 | /* Helper for create_solib_event_breakpoint / |
7507 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7508 | INSERT_MODE to pass through to update_global_location_list. */ | |
7509 | ||
7510 | static struct breakpoint * | |
7511 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7512 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7513 | { |
7514 | struct breakpoint *b; | |
7515 | ||
06edf0c0 PA |
7516 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7517 | &internal_breakpoint_ops); | |
04086b45 | 7518 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7519 | return b; |
7520 | } | |
7521 | ||
04086b45 PA |
7522 | struct breakpoint * |
7523 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7524 | { | |
7525 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7526 | } | |
7527 | ||
f37f681c PA |
7528 | /* See breakpoint.h. */ |
7529 | ||
7530 | struct breakpoint * | |
7531 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7532 | { | |
7533 | struct breakpoint *b; | |
7534 | ||
04086b45 PA |
7535 | /* Explicitly tell update_global_location_list to insert |
7536 | locations. */ | |
7537 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7538 | if (!b->loc->inserted) |
7539 | { | |
7540 | delete_breakpoint (b); | |
7541 | return NULL; | |
7542 | } | |
7543 | return b; | |
7544 | } | |
7545 | ||
cae688ec JJ |
7546 | /* Disable any breakpoints that are on code in shared libraries. Only |
7547 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7548 | ||
7549 | void | |
cb851954 | 7550 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7551 | { |
876fa593 | 7552 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7553 | |
876fa593 | 7554 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7555 | { |
2bdf28a0 | 7556 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7557 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7558 | |
4a64f543 MS |
7559 | /* We apply the check to all breakpoints, including disabled for |
7560 | those with loc->duplicate set. This is so that when breakpoint | |
7561 | becomes enabled, or the duplicate is removed, gdb will try to | |
7562 | insert all breakpoints. If we don't set shlib_disabled here, | |
7563 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7564 | if (((b->type == bp_breakpoint) |
508ccb1f | 7565 | || (b->type == bp_jit_event) |
1042e4c0 | 7566 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7567 | || (is_tracepoint (b))) |
6c95b8df | 7568 | && loc->pspace == current_program_space |
0d381245 | 7569 | && !loc->shlib_disabled |
6c95b8df | 7570 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7571 | ) |
0d381245 VP |
7572 | { |
7573 | loc->shlib_disabled = 1; | |
7574 | } | |
cae688ec JJ |
7575 | } |
7576 | } | |
7577 | ||
63644780 NB |
7578 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7579 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7580 | disabled ones can just stay disabled. */ | |
84acb35a | 7581 | |
75149521 | 7582 | static void |
84acb35a JJ |
7583 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7584 | { | |
876fa593 | 7585 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7586 | int disabled_shlib_breaks = 0; |
7587 | ||
876fa593 | 7588 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7589 | { |
2bdf28a0 | 7590 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7591 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7592 | |
1e4d1764 | 7593 | if (solib->pspace == loc->pspace |
e2dd7057 | 7594 | && !loc->shlib_disabled |
1e4d1764 YQ |
7595 | && (((b->type == bp_breakpoint |
7596 | || b->type == bp_jit_event | |
7597 | || b->type == bp_hardware_breakpoint) | |
7598 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7599 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7600 | || is_tracepoint (b)) | |
e2dd7057 | 7601 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7602 | { |
e2dd7057 PP |
7603 | loc->shlib_disabled = 1; |
7604 | /* At this point, we cannot rely on remove_breakpoint | |
7605 | succeeding so we must mark the breakpoint as not inserted | |
7606 | to prevent future errors occurring in remove_breakpoints. */ | |
7607 | loc->inserted = 0; | |
8d3788bd VP |
7608 | |
7609 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7610 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7611 | |
e2dd7057 PP |
7612 | if (!disabled_shlib_breaks) |
7613 | { | |
223ffa71 | 7614 | target_terminal::ours_for_output (); |
3e43a32a MS |
7615 | warning (_("Temporarily disabling breakpoints " |
7616 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7617 | solib->so_name); |
84acb35a | 7618 | } |
e2dd7057 | 7619 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7620 | } |
7621 | } | |
84acb35a JJ |
7622 | } |
7623 | ||
63644780 NB |
7624 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7625 | notification of free_objfile. Only apply to enabled breakpoints, | |
7626 | disabled ones can just stay disabled. */ | |
7627 | ||
7628 | static void | |
7629 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7630 | { | |
7631 | struct breakpoint *b; | |
7632 | ||
7633 | if (objfile == NULL) | |
7634 | return; | |
7635 | ||
d03de421 PA |
7636 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7637 | managed by the user with add-symbol-file/remove-symbol-file. | |
7638 | Similarly to how breakpoints in shared libraries are handled in | |
7639 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7640 | shlib_disabled so they end up uninserted on the next global |
7641 | location list update. Shared libraries not loaded by the user | |
7642 | aren't handled here -- they're already handled in | |
7643 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7644 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7645 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7646 | main objfile). */ | |
7647 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7648 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7649 | return; |
7650 | ||
7651 | ALL_BREAKPOINTS (b) | |
7652 | { | |
7653 | struct bp_location *loc; | |
7654 | int bp_modified = 0; | |
7655 | ||
7656 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7657 | continue; | |
7658 | ||
7659 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7660 | { | |
7661 | CORE_ADDR loc_addr = loc->address; | |
7662 | ||
7663 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7664 | && loc->loc_type != bp_loc_software_breakpoint) | |
7665 | continue; | |
7666 | ||
7667 | if (loc->shlib_disabled != 0) | |
7668 | continue; | |
7669 | ||
7670 | if (objfile->pspace != loc->pspace) | |
7671 | continue; | |
7672 | ||
7673 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7674 | && loc->loc_type != bp_loc_software_breakpoint) | |
7675 | continue; | |
7676 | ||
7677 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7678 | { | |
7679 | loc->shlib_disabled = 1; | |
08351840 PA |
7680 | /* At this point, we don't know whether the object was |
7681 | unmapped from the inferior or not, so leave the | |
7682 | inserted flag alone. We'll handle failure to | |
7683 | uninsert quietly, in case the object was indeed | |
7684 | unmapped. */ | |
63644780 NB |
7685 | |
7686 | mark_breakpoint_location_modified (loc); | |
7687 | ||
7688 | bp_modified = 1; | |
7689 | } | |
7690 | } | |
7691 | ||
7692 | if (bp_modified) | |
76727919 | 7693 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7694 | } |
7695 | } | |
7696 | ||
ce78b96d JB |
7697 | /* FORK & VFORK catchpoints. */ |
7698 | ||
e29a4733 | 7699 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7700 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7701 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7702 | |
c1fc2657 | 7703 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7704 | { |
e29a4733 PA |
7705 | /* Process id of a child process whose forking triggered this |
7706 | catchpoint. This field is only valid immediately after this | |
7707 | catchpoint has triggered. */ | |
7708 | ptid_t forked_inferior_pid; | |
7709 | }; | |
7710 | ||
4a64f543 MS |
7711 | /* Implement the "insert" breakpoint_ops method for fork |
7712 | catchpoints. */ | |
ce78b96d | 7713 | |
77b06cd7 TJB |
7714 | static int |
7715 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7716 | { |
dfd4cc63 | 7717 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7718 | } |
7719 | ||
4a64f543 MS |
7720 | /* Implement the "remove" breakpoint_ops method for fork |
7721 | catchpoints. */ | |
ce78b96d JB |
7722 | |
7723 | static int | |
73971819 | 7724 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7725 | { |
dfd4cc63 | 7726 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7727 | } |
7728 | ||
7729 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7730 | catchpoints. */ | |
7731 | ||
7732 | static int | |
f1310107 | 7733 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7734 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7735 | const struct target_waitstatus *ws) |
ce78b96d | 7736 | { |
e29a4733 PA |
7737 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7738 | ||
f90263c1 TT |
7739 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7740 | return 0; | |
7741 | ||
7742 | c->forked_inferior_pid = ws->value.related_pid; | |
7743 | return 1; | |
ce78b96d JB |
7744 | } |
7745 | ||
4a64f543 MS |
7746 | /* Implement the "print_it" breakpoint_ops method for fork |
7747 | catchpoints. */ | |
ce78b96d JB |
7748 | |
7749 | static enum print_stop_action | |
348d480f | 7750 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7751 | { |
36dfb11c | 7752 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7753 | struct breakpoint *b = bs->breakpoint_at; |
7754 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7755 | |
ce78b96d | 7756 | annotate_catchpoint (b->number); |
f303dbd6 | 7757 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7758 | if (b->disposition == disp_del) |
112e8700 | 7759 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7760 | else |
112e8700 SM |
7761 | uiout->text ("Catchpoint "); |
7762 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7763 | { |
112e8700 SM |
7764 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7765 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7766 | } |
112e8700 SM |
7767 | uiout->field_int ("bkptno", b->number); |
7768 | uiout->text (" (forked process "); | |
7769 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7770 | uiout->text ("), "); | |
ce78b96d JB |
7771 | return PRINT_SRC_AND_LOC; |
7772 | } | |
7773 | ||
4a64f543 MS |
7774 | /* Implement the "print_one" breakpoint_ops method for fork |
7775 | catchpoints. */ | |
ce78b96d JB |
7776 | |
7777 | static void | |
a6d9a66e | 7778 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7779 | { |
e29a4733 | 7780 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7781 | struct value_print_options opts; |
79a45e25 | 7782 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7783 | |
7784 | get_user_print_options (&opts); | |
7785 | ||
4a64f543 MS |
7786 | /* Field 4, the address, is omitted (which makes the columns not |
7787 | line up too nicely with the headers, but the effect is relatively | |
7788 | readable). */ | |
79a45b7d | 7789 | if (opts.addressprint) |
112e8700 | 7790 | uiout->field_skip ("addr"); |
ce78b96d | 7791 | annotate_field (5); |
112e8700 | 7792 | uiout->text ("fork"); |
e29a4733 | 7793 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7794 | { |
112e8700 SM |
7795 | uiout->text (", process "); |
7796 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7797 | uiout->spaces (1); | |
ce78b96d | 7798 | } |
8ac3646f | 7799 | |
112e8700 SM |
7800 | if (uiout->is_mi_like_p ()) |
7801 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7802 | } |
7803 | ||
7804 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7805 | catchpoints. */ | |
7806 | ||
7807 | static void | |
7808 | print_mention_catch_fork (struct breakpoint *b) | |
7809 | { | |
7810 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7811 | } | |
7812 | ||
6149aea9 PA |
7813 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7814 | catchpoints. */ | |
7815 | ||
7816 | static void | |
7817 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7818 | { | |
7819 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7820 | print_recreate_thread (b, fp); |
6149aea9 PA |
7821 | } |
7822 | ||
ce78b96d JB |
7823 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7824 | ||
2060206e | 7825 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7826 | |
4a64f543 MS |
7827 | /* Implement the "insert" breakpoint_ops method for vfork |
7828 | catchpoints. */ | |
ce78b96d | 7829 | |
77b06cd7 TJB |
7830 | static int |
7831 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7832 | { |
dfd4cc63 | 7833 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7834 | } |
7835 | ||
4a64f543 MS |
7836 | /* Implement the "remove" breakpoint_ops method for vfork |
7837 | catchpoints. */ | |
ce78b96d JB |
7838 | |
7839 | static int | |
73971819 | 7840 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7841 | { |
dfd4cc63 | 7842 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7843 | } |
7844 | ||
7845 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7846 | catchpoints. */ | |
7847 | ||
7848 | static int | |
f1310107 | 7849 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7850 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7851 | const struct target_waitstatus *ws) |
ce78b96d | 7852 | { |
e29a4733 PA |
7853 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7854 | ||
f90263c1 TT |
7855 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7856 | return 0; | |
7857 | ||
7858 | c->forked_inferior_pid = ws->value.related_pid; | |
7859 | return 1; | |
ce78b96d JB |
7860 | } |
7861 | ||
4a64f543 MS |
7862 | /* Implement the "print_it" breakpoint_ops method for vfork |
7863 | catchpoints. */ | |
ce78b96d JB |
7864 | |
7865 | static enum print_stop_action | |
348d480f | 7866 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7867 | { |
36dfb11c | 7868 | struct ui_out *uiout = current_uiout; |
348d480f | 7869 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7870 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7871 | ||
ce78b96d | 7872 | annotate_catchpoint (b->number); |
f303dbd6 | 7873 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7874 | if (b->disposition == disp_del) |
112e8700 | 7875 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7876 | else |
112e8700 SM |
7877 | uiout->text ("Catchpoint "); |
7878 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7879 | { |
112e8700 SM |
7880 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7881 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7882 | } |
112e8700 SM |
7883 | uiout->field_int ("bkptno", b->number); |
7884 | uiout->text (" (vforked process "); | |
7885 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7886 | uiout->text ("), "); | |
ce78b96d JB |
7887 | return PRINT_SRC_AND_LOC; |
7888 | } | |
7889 | ||
4a64f543 MS |
7890 | /* Implement the "print_one" breakpoint_ops method for vfork |
7891 | catchpoints. */ | |
ce78b96d JB |
7892 | |
7893 | static void | |
a6d9a66e | 7894 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7895 | { |
e29a4733 | 7896 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7897 | struct value_print_options opts; |
79a45e25 | 7898 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7899 | |
7900 | get_user_print_options (&opts); | |
4a64f543 MS |
7901 | /* Field 4, the address, is omitted (which makes the columns not |
7902 | line up too nicely with the headers, but the effect is relatively | |
7903 | readable). */ | |
79a45b7d | 7904 | if (opts.addressprint) |
112e8700 | 7905 | uiout->field_skip ("addr"); |
ce78b96d | 7906 | annotate_field (5); |
112e8700 | 7907 | uiout->text ("vfork"); |
e29a4733 | 7908 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7909 | { |
112e8700 SM |
7910 | uiout->text (", process "); |
7911 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7912 | uiout->spaces (1); | |
ce78b96d | 7913 | } |
8ac3646f | 7914 | |
112e8700 SM |
7915 | if (uiout->is_mi_like_p ()) |
7916 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7917 | } |
7918 | ||
7919 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7920 | catchpoints. */ | |
7921 | ||
7922 | static void | |
7923 | print_mention_catch_vfork (struct breakpoint *b) | |
7924 | { | |
7925 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7926 | } | |
7927 | ||
6149aea9 PA |
7928 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7929 | catchpoints. */ | |
7930 | ||
7931 | static void | |
7932 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7933 | { | |
7934 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7935 | print_recreate_thread (b, fp); |
6149aea9 PA |
7936 | } |
7937 | ||
ce78b96d JB |
7938 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7939 | ||
2060206e | 7940 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7941 | |
edcc5120 | 7942 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7943 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7944 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7945 | ||
c1fc2657 | 7946 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7947 | { |
c1fc2657 | 7948 | ~solib_catchpoint () override; |
edcc5120 TT |
7949 | |
7950 | /* True for "catch load", false for "catch unload". */ | |
7951 | unsigned char is_load; | |
7952 | ||
7953 | /* Regular expression to match, if any. COMPILED is only valid when | |
7954 | REGEX is non-NULL. */ | |
7955 | char *regex; | |
2d7cc5c7 | 7956 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7957 | }; |
7958 | ||
c1fc2657 | 7959 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7960 | { |
c1fc2657 | 7961 | xfree (this->regex); |
edcc5120 TT |
7962 | } |
7963 | ||
7964 | static int | |
7965 | insert_catch_solib (struct bp_location *ignore) | |
7966 | { | |
7967 | return 0; | |
7968 | } | |
7969 | ||
7970 | static int | |
73971819 | 7971 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7972 | { |
7973 | return 0; | |
7974 | } | |
7975 | ||
7976 | static int | |
7977 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7978 | const address_space *aspace, |
edcc5120 TT |
7979 | CORE_ADDR bp_addr, |
7980 | const struct target_waitstatus *ws) | |
7981 | { | |
7982 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7983 | struct breakpoint *other; | |
7984 | ||
7985 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7986 | return 1; | |
7987 | ||
7988 | ALL_BREAKPOINTS (other) | |
7989 | { | |
7990 | struct bp_location *other_bl; | |
7991 | ||
7992 | if (other == bl->owner) | |
7993 | continue; | |
7994 | ||
7995 | if (other->type != bp_shlib_event) | |
7996 | continue; | |
7997 | ||
c1fc2657 | 7998 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7999 | continue; |
8000 | ||
8001 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8002 | { | |
8003 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8004 | return 1; | |
8005 | } | |
8006 | } | |
8007 | ||
8008 | return 0; | |
8009 | } | |
8010 | ||
8011 | static void | |
8012 | check_status_catch_solib (struct bpstats *bs) | |
8013 | { | |
8014 | struct solib_catchpoint *self | |
8015 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8016 | |
8017 | if (self->is_load) | |
8018 | { | |
8019 | struct so_list *iter; | |
8020 | ||
6fb16ce6 | 8021 | for (int ix = 0; |
edcc5120 TT |
8022 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, |
8023 | ix, iter); | |
8024 | ++ix) | |
8025 | { | |
8026 | if (!self->regex | |
2d7cc5c7 | 8027 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8028 | return; |
8029 | } | |
8030 | } | |
8031 | else | |
8032 | { | |
6fb16ce6 | 8033 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8034 | { |
8035 | if (!self->regex | |
6fb16ce6 | 8036 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8037 | return; |
8038 | } | |
8039 | } | |
8040 | ||
8041 | bs->stop = 0; | |
8042 | bs->print_it = print_it_noop; | |
8043 | } | |
8044 | ||
8045 | static enum print_stop_action | |
8046 | print_it_catch_solib (bpstat bs) | |
8047 | { | |
8048 | struct breakpoint *b = bs->breakpoint_at; | |
8049 | struct ui_out *uiout = current_uiout; | |
8050 | ||
8051 | annotate_catchpoint (b->number); | |
f303dbd6 | 8052 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8053 | if (b->disposition == disp_del) |
112e8700 | 8054 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8055 | else |
112e8700 SM |
8056 | uiout->text ("Catchpoint "); |
8057 | uiout->field_int ("bkptno", b->number); | |
8058 | uiout->text ("\n"); | |
8059 | if (uiout->is_mi_like_p ()) | |
8060 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8061 | print_solib_event (1); |
8062 | return PRINT_SRC_AND_LOC; | |
8063 | } | |
8064 | ||
8065 | static void | |
8066 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8067 | { | |
8068 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8069 | struct value_print_options opts; | |
8070 | struct ui_out *uiout = current_uiout; | |
8071 | char *msg; | |
8072 | ||
8073 | get_user_print_options (&opts); | |
8074 | /* Field 4, the address, is omitted (which makes the columns not | |
8075 | line up too nicely with the headers, but the effect is relatively | |
8076 | readable). */ | |
8077 | if (opts.addressprint) | |
8078 | { | |
8079 | annotate_field (4); | |
112e8700 | 8080 | uiout->field_skip ("addr"); |
edcc5120 TT |
8081 | } |
8082 | ||
8083 | annotate_field (5); | |
8084 | if (self->is_load) | |
8085 | { | |
8086 | if (self->regex) | |
8087 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8088 | else | |
8089 | msg = xstrdup (_("load of library")); | |
8090 | } | |
8091 | else | |
8092 | { | |
8093 | if (self->regex) | |
8094 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8095 | else | |
8096 | msg = xstrdup (_("unload of library")); | |
8097 | } | |
112e8700 | 8098 | uiout->field_string ("what", msg); |
edcc5120 | 8099 | xfree (msg); |
8ac3646f | 8100 | |
112e8700 SM |
8101 | if (uiout->is_mi_like_p ()) |
8102 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8103 | } |
8104 | ||
8105 | static void | |
8106 | print_mention_catch_solib (struct breakpoint *b) | |
8107 | { | |
8108 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8109 | ||
8110 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8111 | self->is_load ? "load" : "unload"); | |
8112 | } | |
8113 | ||
8114 | static void | |
8115 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8116 | { | |
8117 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8118 | ||
8119 | fprintf_unfiltered (fp, "%s %s", | |
8120 | b->disposition == disp_del ? "tcatch" : "catch", | |
8121 | self->is_load ? "load" : "unload"); | |
8122 | if (self->regex) | |
8123 | fprintf_unfiltered (fp, " %s", self->regex); | |
8124 | fprintf_unfiltered (fp, "\n"); | |
8125 | } | |
8126 | ||
8127 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8128 | ||
91985142 MG |
8129 | /* Shared helper function (MI and CLI) for creating and installing |
8130 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8131 | the events to be caught are load events, otherwise they are | |
8132 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8133 | temporary one. If ENABLED is non-zero the catchpoint is | |
8134 | created in an enabled state. */ | |
edcc5120 | 8135 | |
91985142 | 8136 | void |
a121b7c1 | 8137 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8138 | { |
edcc5120 | 8139 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8140 | |
edcc5120 TT |
8141 | if (!arg) |
8142 | arg = ""; | |
f1735a53 | 8143 | arg = skip_spaces (arg); |
edcc5120 | 8144 | |
36bd8eaa | 8145 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8146 | |
8147 | if (*arg != '\0') | |
8148 | { | |
2d7cc5c7 PA |
8149 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8150 | _("Invalid regexp"))); | |
edcc5120 TT |
8151 | c->regex = xstrdup (arg); |
8152 | } | |
8153 | ||
8154 | c->is_load = is_load; | |
36bd8eaa | 8155 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8156 | &catch_solib_breakpoint_ops); |
8157 | ||
c1fc2657 | 8158 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8159 | |
b270e6f9 | 8160 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8161 | } |
8162 | ||
91985142 MG |
8163 | /* A helper function that does all the work for "catch load" and |
8164 | "catch unload". */ | |
8165 | ||
8166 | static void | |
eb4c3f4a | 8167 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8168 | struct cmd_list_element *command) |
8169 | { | |
8170 | int tempflag; | |
8171 | const int enabled = 1; | |
8172 | ||
8173 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8174 | ||
8175 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8176 | } | |
8177 | ||
edcc5120 | 8178 | static void |
eb4c3f4a | 8179 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8180 | struct cmd_list_element *command) |
8181 | { | |
8182 | catch_load_or_unload (arg, from_tty, 1, command); | |
8183 | } | |
8184 | ||
8185 | static void | |
eb4c3f4a | 8186 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8187 | struct cmd_list_element *command) |
8188 | { | |
8189 | catch_load_or_unload (arg, from_tty, 0, command); | |
8190 | } | |
8191 | ||
346774a9 PA |
8192 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8193 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8194 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8195 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8196 | |
ab04a2af | 8197 | void |
346774a9 PA |
8198 | init_catchpoint (struct breakpoint *b, |
8199 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8200 | const char *cond_string, |
c0a91b2b | 8201 | const struct breakpoint_ops *ops) |
c906108c | 8202 | { |
51abb421 | 8203 | symtab_and_line sal; |
6c95b8df | 8204 | sal.pspace = current_program_space; |
c5aa993b | 8205 | |
28010a5d | 8206 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8207 | |
1b36a34b | 8208 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8209 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8210 | } |
8211 | ||
28010a5d | 8212 | void |
b270e6f9 | 8213 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8214 | { |
b270e6f9 | 8215 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8216 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8217 | if (is_tracepoint (b)) |
8218 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8219 | if (!internal) |
8220 | mention (b); | |
76727919 | 8221 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8222 | |
8223 | if (update_gll) | |
44702360 | 8224 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8225 | } |
8226 | ||
9b70b993 | 8227 | static void |
a6d9a66e | 8228 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8229 | int tempflag, const char *cond_string, |
c0a91b2b | 8230 | const struct breakpoint_ops *ops) |
c906108c | 8231 | { |
b270e6f9 | 8232 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8233 | |
b270e6f9 | 8234 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8235 | |
8236 | c->forked_inferior_pid = null_ptid; | |
8237 | ||
b270e6f9 | 8238 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8239 | } |
8240 | ||
fe798b75 JB |
8241 | /* Exec catchpoints. */ |
8242 | ||
b4d90040 | 8243 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8244 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8245 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8246 | ||
c1fc2657 | 8247 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8248 | { |
c1fc2657 | 8249 | ~exec_catchpoint () override; |
b4d90040 PA |
8250 | |
8251 | /* Filename of a program whose exec triggered this catchpoint. | |
8252 | This field is only valid immediately after this catchpoint has | |
8253 | triggered. */ | |
8254 | char *exec_pathname; | |
8255 | }; | |
8256 | ||
c1fc2657 | 8257 | /* Exec catchpoint destructor. */ |
b4d90040 | 8258 | |
c1fc2657 | 8259 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8260 | { |
c1fc2657 | 8261 | xfree (this->exec_pathname); |
b4d90040 PA |
8262 | } |
8263 | ||
77b06cd7 TJB |
8264 | static int |
8265 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8266 | { |
dfd4cc63 | 8267 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8268 | } |
c906108c | 8269 | |
fe798b75 | 8270 | static int |
73971819 | 8271 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8272 | { |
dfd4cc63 | 8273 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8274 | } |
c906108c | 8275 | |
fe798b75 | 8276 | static int |
f1310107 | 8277 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8278 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8279 | const struct target_waitstatus *ws) |
fe798b75 | 8280 | { |
b4d90040 PA |
8281 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8282 | ||
f90263c1 TT |
8283 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8284 | return 0; | |
8285 | ||
8286 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8287 | return 1; | |
fe798b75 | 8288 | } |
c906108c | 8289 | |
fe798b75 | 8290 | static enum print_stop_action |
348d480f | 8291 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8292 | { |
36dfb11c | 8293 | struct ui_out *uiout = current_uiout; |
348d480f | 8294 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8295 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8296 | ||
fe798b75 | 8297 | annotate_catchpoint (b->number); |
f303dbd6 | 8298 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8299 | if (b->disposition == disp_del) |
112e8700 | 8300 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8301 | else |
112e8700 SM |
8302 | uiout->text ("Catchpoint "); |
8303 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8304 | { |
112e8700 SM |
8305 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8306 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8307 | } |
112e8700 SM |
8308 | uiout->field_int ("bkptno", b->number); |
8309 | uiout->text (" (exec'd "); | |
8310 | uiout->field_string ("new-exec", c->exec_pathname); | |
8311 | uiout->text ("), "); | |
36dfb11c | 8312 | |
fe798b75 | 8313 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8314 | } |
8315 | ||
fe798b75 | 8316 | static void |
a6d9a66e | 8317 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8318 | { |
b4d90040 | 8319 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8320 | struct value_print_options opts; |
79a45e25 | 8321 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8322 | |
8323 | get_user_print_options (&opts); | |
8324 | ||
8325 | /* Field 4, the address, is omitted (which makes the columns | |
8326 | not line up too nicely with the headers, but the effect | |
8327 | is relatively readable). */ | |
8328 | if (opts.addressprint) | |
112e8700 | 8329 | uiout->field_skip ("addr"); |
fe798b75 | 8330 | annotate_field (5); |
112e8700 | 8331 | uiout->text ("exec"); |
b4d90040 | 8332 | if (c->exec_pathname != NULL) |
fe798b75 | 8333 | { |
112e8700 SM |
8334 | uiout->text (", program \""); |
8335 | uiout->field_string ("what", c->exec_pathname); | |
8336 | uiout->text ("\" "); | |
fe798b75 | 8337 | } |
8ac3646f | 8338 | |
112e8700 SM |
8339 | if (uiout->is_mi_like_p ()) |
8340 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8341 | } |
8342 | ||
8343 | static void | |
8344 | print_mention_catch_exec (struct breakpoint *b) | |
8345 | { | |
8346 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8347 | } | |
8348 | ||
6149aea9 PA |
8349 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8350 | catchpoints. */ | |
8351 | ||
8352 | static void | |
8353 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8354 | { | |
8355 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8356 | print_recreate_thread (b, fp); |
6149aea9 PA |
8357 | } |
8358 | ||
2060206e | 8359 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8360 | |
c906108c | 8361 | static int |
fba45db2 | 8362 | hw_breakpoint_used_count (void) |
c906108c | 8363 | { |
c906108c | 8364 | int i = 0; |
f1310107 TJB |
8365 | struct breakpoint *b; |
8366 | struct bp_location *bl; | |
c906108c SS |
8367 | |
8368 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8369 | { |
d6b74ac4 | 8370 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8371 | for (bl = b->loc; bl; bl = bl->next) |
8372 | { | |
8373 | /* Special types of hardware breakpoints may use more than | |
8374 | one register. */ | |
348d480f | 8375 | i += b->ops->resources_needed (bl); |
f1310107 | 8376 | } |
c5aa993b | 8377 | } |
c906108c SS |
8378 | |
8379 | return i; | |
8380 | } | |
8381 | ||
a1398e0c PA |
8382 | /* Returns the resources B would use if it were a hardware |
8383 | watchpoint. */ | |
8384 | ||
c906108c | 8385 | static int |
a1398e0c | 8386 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8387 | { |
c906108c | 8388 | int i = 0; |
e09342b5 | 8389 | struct bp_location *bl; |
c906108c | 8390 | |
a1398e0c PA |
8391 | if (!breakpoint_enabled (b)) |
8392 | return 0; | |
8393 | ||
8394 | for (bl = b->loc; bl; bl = bl->next) | |
8395 | { | |
8396 | /* Special types of hardware watchpoints may use more than | |
8397 | one register. */ | |
8398 | i += b->ops->resources_needed (bl); | |
8399 | } | |
8400 | ||
8401 | return i; | |
8402 | } | |
8403 | ||
8404 | /* Returns the sum the used resources of all hardware watchpoints of | |
8405 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8406 | the sum of the used resources of all hardware watchpoints of other | |
8407 | types _not_ TYPE. */ | |
8408 | ||
8409 | static int | |
8410 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8411 | enum bptype type, int *other_type_used) | |
8412 | { | |
8413 | int i = 0; | |
8414 | struct breakpoint *b; | |
8415 | ||
c906108c SS |
8416 | *other_type_used = 0; |
8417 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8418 | { |
a1398e0c PA |
8419 | if (b == except) |
8420 | continue; | |
e09342b5 TJB |
8421 | if (!breakpoint_enabled (b)) |
8422 | continue; | |
8423 | ||
a1398e0c PA |
8424 | if (b->type == type) |
8425 | i += hw_watchpoint_use_count (b); | |
8426 | else if (is_hardware_watchpoint (b)) | |
8427 | *other_type_used = 1; | |
e09342b5 TJB |
8428 | } |
8429 | ||
c906108c SS |
8430 | return i; |
8431 | } | |
8432 | ||
c906108c | 8433 | void |
fba45db2 | 8434 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8435 | { |
c5aa993b | 8436 | struct breakpoint *b; |
c906108c SS |
8437 | |
8438 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8439 | { |
cc60f2e3 | 8440 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8441 | { |
b5de0fa7 | 8442 | b->enable_state = bp_call_disabled; |
44702360 | 8443 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8444 | } |
8445 | } | |
c906108c SS |
8446 | } |
8447 | ||
8448 | void | |
fba45db2 | 8449 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8450 | { |
c5aa993b | 8451 | struct breakpoint *b; |
c906108c SS |
8452 | |
8453 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8454 | { |
cc60f2e3 | 8455 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8456 | { |
b5de0fa7 | 8457 | b->enable_state = bp_enabled; |
44702360 | 8458 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8459 | } |
8460 | } | |
c906108c SS |
8461 | } |
8462 | ||
8bea4e01 UW |
8463 | void |
8464 | disable_breakpoints_before_startup (void) | |
8465 | { | |
6c95b8df | 8466 | current_program_space->executing_startup = 1; |
44702360 | 8467 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8468 | } |
8469 | ||
8470 | void | |
8471 | enable_breakpoints_after_startup (void) | |
8472 | { | |
6c95b8df | 8473 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8474 | breakpoint_re_set (); |
8bea4e01 UW |
8475 | } |
8476 | ||
7c16b83e PA |
8477 | /* Create a new single-step breakpoint for thread THREAD, with no |
8478 | locations. */ | |
c906108c | 8479 | |
7c16b83e PA |
8480 | static struct breakpoint * |
8481 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8482 | { | |
b270e6f9 | 8483 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8484 | |
b270e6f9 | 8485 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8486 | &momentary_breakpoint_ops); |
8487 | ||
8488 | b->disposition = disp_donttouch; | |
8489 | b->frame_id = null_frame_id; | |
8490 | ||
8491 | b->thread = thread; | |
8492 | gdb_assert (b->thread != 0); | |
8493 | ||
b270e6f9 | 8494 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8495 | } |
8496 | ||
8497 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8498 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8499 | frame. */ | |
c906108c | 8500 | |
454dafbd | 8501 | breakpoint_up |
a6d9a66e UW |
8502 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8503 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8504 | { |
52f0bd74 | 8505 | struct breakpoint *b; |
edb3359d | 8506 | |
193facb3 JK |
8507 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8508 | tail-called one. */ | |
8509 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8510 | |
06edf0c0 | 8511 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8512 | b->enable_state = bp_enabled; |
8513 | b->disposition = disp_donttouch; | |
818dd999 | 8514 | b->frame_id = frame_id; |
c906108c | 8515 | |
4a64f543 MS |
8516 | /* If we're debugging a multi-threaded program, then we want |
8517 | momentary breakpoints to be active in only a single thread of | |
8518 | control. */ | |
39f77062 | 8519 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8520 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8521 | |
44702360 | 8522 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8523 | |
454dafbd | 8524 | return breakpoint_up (b); |
c906108c | 8525 | } |
611c83ae | 8526 | |
06edf0c0 | 8527 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8528 | The new breakpoint will have type TYPE, use OPS as its |
8529 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8530 | |
06edf0c0 PA |
8531 | static struct breakpoint * |
8532 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8533 | enum bptype type, | |
a1aa2221 LM |
8534 | const struct breakpoint_ops *ops, |
8535 | int loc_enabled) | |
e58b0e63 PA |
8536 | { |
8537 | struct breakpoint *copy; | |
8538 | ||
06edf0c0 | 8539 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8540 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8541 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8542 | |
a6d9a66e | 8543 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8544 | copy->loc->requested_address = orig->loc->requested_address; |
8545 | copy->loc->address = orig->loc->address; | |
8546 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8547 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8548 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8549 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8550 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8551 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8552 | copy->frame_id = orig->frame_id; |
8553 | copy->thread = orig->thread; | |
6c95b8df | 8554 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8555 | |
8556 | copy->enable_state = bp_enabled; | |
8557 | copy->disposition = disp_donttouch; | |
8558 | copy->number = internal_breakpoint_number--; | |
8559 | ||
44702360 | 8560 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8561 | return copy; |
8562 | } | |
8563 | ||
06edf0c0 PA |
8564 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8565 | ORIG is NULL. */ | |
8566 | ||
8567 | struct breakpoint * | |
8568 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8569 | { | |
8570 | /* If there's nothing to clone, then return nothing. */ | |
8571 | if (orig == NULL) | |
8572 | return NULL; | |
8573 | ||
a1aa2221 | 8574 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8575 | } |
8576 | ||
454dafbd | 8577 | breakpoint_up |
a6d9a66e UW |
8578 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8579 | enum bptype type) | |
611c83ae PA |
8580 | { |
8581 | struct symtab_and_line sal; | |
8582 | ||
8583 | sal = find_pc_line (pc, 0); | |
8584 | sal.pc = pc; | |
8585 | sal.section = find_pc_overlay (pc); | |
8586 | sal.explicit_pc = 1; | |
8587 | ||
a6d9a66e | 8588 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8589 | } |
c906108c | 8590 | \f |
c5aa993b | 8591 | |
c906108c SS |
8592 | /* Tell the user we have just set a breakpoint B. */ |
8593 | ||
8594 | static void | |
fba45db2 | 8595 | mention (struct breakpoint *b) |
c906108c | 8596 | { |
348d480f | 8597 | b->ops->print_mention (b); |
2d33446d | 8598 | current_uiout->text ("\n"); |
c906108c | 8599 | } |
c906108c | 8600 | \f |
c5aa993b | 8601 | |
1a853c52 PA |
8602 | static int bp_loc_is_permanent (struct bp_location *loc); |
8603 | ||
0d381245 | 8604 | static struct bp_location * |
39d61571 | 8605 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8606 | const struct symtab_and_line *sal) |
8607 | { | |
8608 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8609 | CORE_ADDR adjusted_address; |
8610 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8611 | ||
8612 | if (loc_gdbarch == NULL) | |
8613 | loc_gdbarch = b->gdbarch; | |
8614 | ||
8615 | /* Adjust the breakpoint's address prior to allocating a location. | |
8616 | Once we call allocate_bp_location(), that mostly uninitialized | |
8617 | location will be placed on the location chain. Adjustment of the | |
8618 | breakpoint may cause target_read_memory() to be called and we do | |
8619 | not want its scan of the location chain to find a breakpoint and | |
8620 | location that's only been partially initialized. */ | |
8621 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8622 | sal->pc, b->type); | |
0d381245 | 8623 | |
d30113d4 | 8624 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8625 | loc = allocate_bp_location (b); |
d30113d4 JK |
8626 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8627 | tmp = &((*tmp)->next)) | |
0d381245 | 8628 | ; |
d30113d4 | 8629 | loc->next = *tmp; |
0d381245 | 8630 | *tmp = loc; |
3742cc8b | 8631 | |
0d381245 | 8632 | loc->requested_address = sal->pc; |
3742cc8b | 8633 | loc->address = adjusted_address; |
6c95b8df | 8634 | loc->pspace = sal->pspace; |
935676c9 | 8635 | loc->probe.prob = sal->prob; |
729662a5 | 8636 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8637 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8638 | loc->section = sal->section; |
3742cc8b | 8639 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8640 | loc->line_number = sal->line; |
2f202fde | 8641 | loc->symtab = sal->symtab; |
4a27f119 | 8642 | loc->symbol = sal->symbol; |
3467ec66 PA |
8643 | loc->msymbol = sal->msymbol; |
8644 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8645 | |
0e30163f JK |
8646 | set_breakpoint_location_function (loc, |
8647 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8648 | |
6ae88661 LM |
8649 | /* While by definition, permanent breakpoints are already present in the |
8650 | code, we don't mark the location as inserted. Normally one would expect | |
8651 | that GDB could rely on that breakpoint instruction to stop the program, | |
8652 | thus removing the need to insert its own breakpoint, except that executing | |
8653 | the breakpoint instruction can kill the target instead of reporting a | |
8654 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8655 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8656 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8657 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8658 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8659 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8660 | it manually increments the PC, thus avoiding executing the breakpoint | |
8661 | instruction.) */ | |
1a853c52 | 8662 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8663 | loc->permanent = 1; |
1a853c52 | 8664 | |
0d381245 VP |
8665 | return loc; |
8666 | } | |
514f746b AR |
8667 | \f |
8668 | ||
1cf4d951 | 8669 | /* See breakpoint.h. */ |
514f746b | 8670 | |
1cf4d951 PA |
8671 | int |
8672 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8673 | { |
8674 | int len; | |
8675 | CORE_ADDR addr; | |
1afeeb75 | 8676 | const gdb_byte *bpoint; |
514f746b AR |
8677 | gdb_byte *target_mem; |
8678 | ||
1cf4d951 PA |
8679 | addr = address; |
8680 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8681 | ||
8682 | /* Software breakpoints unsupported? */ | |
8683 | if (bpoint == NULL) | |
8684 | return 0; | |
8685 | ||
224c3ddb | 8686 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8687 | |
8688 | /* Enable the automatic memory restoration from breakpoints while | |
8689 | we read the memory. Otherwise we could say about our temporary | |
8690 | breakpoints they are permanent. */ | |
cb85b21b TT |
8691 | scoped_restore restore_memory |
8692 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8693 | |
8694 | if (target_read_memory (address, target_mem, len) == 0 | |
8695 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8696 | return 1; |
1cf4d951 | 8697 | |
cb85b21b | 8698 | return 0; |
1cf4d951 PA |
8699 | } |
8700 | ||
8701 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8702 | return 0 otherwise. */ | |
8703 | ||
8704 | static int | |
8705 | bp_loc_is_permanent (struct bp_location *loc) | |
8706 | { | |
514f746b AR |
8707 | gdb_assert (loc != NULL); |
8708 | ||
244558af LM |
8709 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8710 | attempt to read from the addresses the locations of these breakpoint types | |
8711 | point to. program_breakpoint_here_p, below, will attempt to read | |
8712 | memory. */ | |
8713 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8714 | return 0; | |
8715 | ||
5ed8105e | 8716 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8717 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8718 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8719 | } |
8720 | ||
e7e0cddf SS |
8721 | /* Build a command list for the dprintf corresponding to the current |
8722 | settings of the dprintf style options. */ | |
8723 | ||
8724 | static void | |
8725 | update_dprintf_command_list (struct breakpoint *b) | |
8726 | { | |
8727 | char *dprintf_args = b->extra_string; | |
8728 | char *printf_line = NULL; | |
8729 | ||
8730 | if (!dprintf_args) | |
8731 | return; | |
8732 | ||
8733 | dprintf_args = skip_spaces (dprintf_args); | |
8734 | ||
8735 | /* Allow a comma, as it may have terminated a location, but don't | |
8736 | insist on it. */ | |
8737 | if (*dprintf_args == ',') | |
8738 | ++dprintf_args; | |
8739 | dprintf_args = skip_spaces (dprintf_args); | |
8740 | ||
8741 | if (*dprintf_args != '"') | |
8742 | error (_("Bad format string, missing '\"'.")); | |
8743 | ||
d3ce09f5 | 8744 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8745 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8746 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8747 | { |
8748 | if (!dprintf_function) | |
8749 | error (_("No function supplied for dprintf call")); | |
8750 | ||
8751 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8752 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8753 | dprintf_function, | |
8754 | dprintf_channel, | |
8755 | dprintf_args); | |
8756 | else | |
8757 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8758 | dprintf_function, | |
8759 | dprintf_args); | |
8760 | } | |
d3ce09f5 SS |
8761 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8762 | { | |
8763 | if (target_can_run_breakpoint_commands ()) | |
8764 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8765 | else | |
8766 | { | |
8767 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8768 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8769 | } | |
8770 | } | |
e7e0cddf SS |
8771 | else |
8772 | internal_error (__FILE__, __LINE__, | |
8773 | _("Invalid dprintf style.")); | |
8774 | ||
f28045c2 | 8775 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8776 | /* Manufacture a printf sequence. */ |
f28045c2 | 8777 | { |
8d749320 | 8778 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8779 | |
f28045c2 YQ |
8780 | printf_cmd_line->control_type = simple_control; |
8781 | printf_cmd_line->body_count = 0; | |
8782 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8783 | printf_cmd_line->next = NULL; |
f28045c2 | 8784 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8785 | |
93921405 | 8786 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8787 | } |
e7e0cddf SS |
8788 | } |
8789 | ||
8790 | /* Update all dprintf commands, making their command lists reflect | |
8791 | current style settings. */ | |
8792 | ||
8793 | static void | |
eb4c3f4a | 8794 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8795 | struct cmd_list_element *c) |
8796 | { | |
8797 | struct breakpoint *b; | |
8798 | ||
8799 | ALL_BREAKPOINTS (b) | |
8800 | { | |
8801 | if (b->type == bp_dprintf) | |
8802 | update_dprintf_command_list (b); | |
8803 | } | |
8804 | } | |
c3f6f71d | 8805 | |
f00aae0f KS |
8806 | /* Create a breakpoint with SAL as location. Use LOCATION |
8807 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8808 | as condition expression. If LOCATION is NULL then create an |
8809 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8810 | |
8811 | static void | |
d9b3f62e | 8812 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8813 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8814 | event_location_up &&location, |
e1e01040 PA |
8815 | gdb::unique_xmalloc_ptr<char> filter, |
8816 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8817 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8818 | enum bptype type, enum bpdisp disposition, |
8819 | int thread, int task, int ignore_count, | |
c0a91b2b | 8820 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8821 | int enabled, int internal, unsigned flags, |
8822 | int display_canonical) | |
018d34a4 | 8823 | { |
0d381245 | 8824 | int i; |
018d34a4 VP |
8825 | |
8826 | if (type == bp_hardware_breakpoint) | |
8827 | { | |
fbbd034e AS |
8828 | int target_resources_ok; |
8829 | ||
8830 | i = hw_breakpoint_used_count (); | |
8831 | target_resources_ok = | |
8832 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8833 | i + 1, 0); |
8834 | if (target_resources_ok == 0) | |
8835 | error (_("No hardware breakpoint support in the target.")); | |
8836 | else if (target_resources_ok < 0) | |
8837 | error (_("Hardware breakpoints used exceeds limit.")); | |
8838 | } | |
8839 | ||
6c5b2ebe | 8840 | gdb_assert (!sals.empty ()); |
6c95b8df | 8841 | |
6c5b2ebe | 8842 | for (const auto &sal : sals) |
0d381245 | 8843 | { |
0d381245 VP |
8844 | struct bp_location *loc; |
8845 | ||
8846 | if (from_tty) | |
5af949e3 UW |
8847 | { |
8848 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8849 | if (!loc_gdbarch) | |
8850 | loc_gdbarch = gdbarch; | |
8851 | ||
8852 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8853 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8854 | } |
0d381245 | 8855 | |
6c5b2ebe | 8856 | if (&sal == &sals[0]) |
0d381245 | 8857 | { |
d9b3f62e | 8858 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8859 | b->thread = thread; |
4a306c9a | 8860 | b->task = task; |
855a6e68 | 8861 | |
e1e01040 PA |
8862 | b->cond_string = cond_string.release (); |
8863 | b->extra_string = extra_string.release (); | |
0d381245 | 8864 | b->ignore_count = ignore_count; |
41447f92 | 8865 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8866 | b->disposition = disposition; |
6c95b8df | 8867 | |
44f238bb PA |
8868 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8869 | b->loc->inserted = 1; | |
8870 | ||
0fb4aa4b PA |
8871 | if (type == bp_static_tracepoint) |
8872 | { | |
d9b3f62e | 8873 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8874 | struct static_tracepoint_marker marker; |
8875 | ||
983af33b | 8876 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8877 | { |
8878 | /* We already know the marker exists, otherwise, we | |
8879 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8880 | const char *p |
8881 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8882 | const char *endp; |
0fb4aa4b | 8883 | |
f1735a53 | 8884 | p = skip_spaces (p); |
0fb4aa4b | 8885 | |
f1735a53 | 8886 | endp = skip_to_space (p); |
0fb4aa4b | 8887 | |
5d9310c4 | 8888 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8889 | |
3e43a32a MS |
8890 | printf_filtered (_("Probed static tracepoint " |
8891 | "marker \"%s\"\n"), | |
5d9310c4 | 8892 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8893 | } |
8894 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8895 | { | |
5d9310c4 | 8896 | t->static_trace_marker_id = std::move (marker.str_id); |
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 | |
3e43a32a MS |
8903 | warning (_("Couldn't determine the static " |
8904 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8905 | } |
8906 | ||
0d381245 VP |
8907 | loc = b->loc; |
8908 | } | |
8909 | else | |
018d34a4 | 8910 | { |
39d61571 | 8911 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8912 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8913 | loc->inserted = 1; | |
0d381245 VP |
8914 | } |
8915 | ||
8916 | if (b->cond_string) | |
8917 | { | |
bbc13ae3 KS |
8918 | const char *arg = b->cond_string; |
8919 | ||
1bb9788d TT |
8920 | loc->cond = parse_exp_1 (&arg, loc->address, |
8921 | block_for_pc (loc->address), 0); | |
0d381245 | 8922 | if (*arg) |
588ae58c | 8923 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8924 | } |
e7e0cddf SS |
8925 | |
8926 | /* Dynamic printf requires and uses additional arguments on the | |
8927 | command line, otherwise it's an error. */ | |
8928 | if (type == bp_dprintf) | |
8929 | { | |
8930 | if (b->extra_string) | |
8931 | update_dprintf_command_list (b); | |
8932 | else | |
8933 | error (_("Format string required")); | |
8934 | } | |
8935 | else if (b->extra_string) | |
588ae58c | 8936 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8937 | } |
018d34a4 | 8938 | |
56435ebe | 8939 | b->display_canonical = display_canonical; |
f00aae0f | 8940 | if (location != NULL) |
d28cd78a | 8941 | b->location = std::move (location); |
018d34a4 | 8942 | else |
d28cd78a | 8943 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8944 | b->filter = filter.release (); |
d9b3f62e | 8945 | } |
018d34a4 | 8946 | |
d9b3f62e PA |
8947 | static void |
8948 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8949 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8950 | event_location_up &&location, |
e1e01040 PA |
8951 | gdb::unique_xmalloc_ptr<char> filter, |
8952 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8953 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8954 | enum bptype type, enum bpdisp disposition, |
8955 | int thread, int task, int ignore_count, | |
c0a91b2b | 8956 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8957 | int enabled, int internal, unsigned flags, |
8958 | int display_canonical) | |
d9b3f62e | 8959 | { |
a5e364af | 8960 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8961 | |
a5e364af | 8962 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8963 | sals, std::move (location), |
e1e01040 PA |
8964 | std::move (filter), |
8965 | std::move (cond_string), | |
8966 | std::move (extra_string), | |
d9b3f62e PA |
8967 | type, disposition, |
8968 | thread, task, ignore_count, | |
8969 | ops, from_tty, | |
44f238bb PA |
8970 | enabled, internal, flags, |
8971 | display_canonical); | |
d9b3f62e | 8972 | |
b270e6f9 | 8973 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8974 | } |
8975 | ||
8976 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8977 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8978 | value. COND_STRING, if not NULL, specified the condition to be | |
8979 | used for all breakpoints. Essentially the only case where | |
8980 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8981 | function. In that case, it's still not possible to specify | |
8982 | separate conditions for different overloaded functions, so | |
8983 | we take just a single condition string. | |
8984 | ||
c3f6f71d | 8985 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8986 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8987 | array contents). If the function fails (error() is called), the |
8988 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8989 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8990 | |
8991 | static void | |
8cdf0e15 | 8992 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8993 | struct linespec_result *canonical, |
e1e01040 PA |
8994 | gdb::unique_xmalloc_ptr<char> cond_string, |
8995 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8996 | enum bptype type, enum bpdisp disposition, |
8997 | int thread, int task, int ignore_count, | |
c0a91b2b | 8998 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8999 | int enabled, int internal, unsigned flags) |
c906108c | 9000 | { |
f8eba3c6 | 9001 | if (canonical->pre_expanded) |
6c5b2ebe | 9002 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9003 | |
6c5b2ebe | 9004 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9005 | { |
f00aae0f | 9006 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9007 | 'break', without arguments. */ |
ffc2605c | 9008 | event_location_up location |
f00aae0f | 9009 | = (canonical->location != NULL |
8e9e35b1 | 9010 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9011 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9012 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9013 | |
6c5b2ebe | 9014 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9015 | std::move (location), |
e1e01040 PA |
9016 | std::move (filter_string), |
9017 | std::move (cond_string), | |
9018 | std::move (extra_string), | |
e7e0cddf | 9019 | type, disposition, |
84f4c1fe | 9020 | thread, task, ignore_count, ops, |
44f238bb | 9021 | from_tty, enabled, internal, flags, |
56435ebe | 9022 | canonical->special_display); |
c3f6f71d | 9023 | } |
c3f6f71d | 9024 | } |
c906108c | 9025 | |
f00aae0f | 9026 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9027 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9028 | addresses found. LOCATION points to the end of the SAL (for |
9029 | linespec locations). | |
9998af43 TJB |
9030 | |
9031 | The array and the line spec strings are allocated on the heap, it is | |
9032 | the caller's responsibility to free them. */ | |
c906108c | 9033 | |
b9362cc7 | 9034 | static void |
f00aae0f | 9035 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9036 | struct linespec_result *canonical) |
c3f6f71d | 9037 | { |
f00aae0f KS |
9038 | struct symtab_and_line cursal; |
9039 | ||
9040 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9041 | { | |
a20714ff | 9042 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9043 | |
a20714ff | 9044 | if (spec == NULL) |
f00aae0f KS |
9045 | { |
9046 | /* The last displayed codepoint, if it's valid, is our default | |
9047 | breakpoint address. */ | |
9048 | if (last_displayed_sal_is_valid ()) | |
9049 | { | |
f00aae0f KS |
9050 | /* Set sal's pspace, pc, symtab, and line to the values |
9051 | corresponding to the last call to print_frame_info. | |
9052 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9053 | as the breakpoint line number is inappropriate otherwise. | |
9054 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9055 | symtab_and_line sal = get_last_displayed_sal (); |
9056 | CORE_ADDR pc = sal.pc; | |
9057 | ||
f00aae0f KS |
9058 | sal = find_pc_line (pc, 0); |
9059 | ||
9060 | /* "break" without arguments is equivalent to "break *PC" | |
9061 | where PC is the last displayed codepoint's address. So | |
9062 | make sure to set sal.explicit_pc to prevent GDB from | |
9063 | trying to expand the list of sals to include all other | |
9064 | instances with the same symtab and line. */ | |
9065 | sal.pc = pc; | |
9066 | sal.explicit_pc = 1; | |
9067 | ||
6c5b2ebe PA |
9068 | struct linespec_sals lsal; |
9069 | lsal.sals = {sal}; | |
f00aae0f KS |
9070 | lsal.canonical = NULL; |
9071 | ||
6c5b2ebe | 9072 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9073 | return; |
9074 | } | |
9075 | else | |
9076 | error (_("No default breakpoint address now.")); | |
c906108c | 9077 | } |
c906108c | 9078 | } |
f00aae0f KS |
9079 | |
9080 | /* Force almost all breakpoints to be in terms of the | |
9081 | current_source_symtab (which is decode_line_1's default). | |
9082 | This should produce the results we want almost all of the | |
9083 | time while leaving default_breakpoint_* alone. | |
9084 | ||
9085 | ObjC: However, don't match an Objective-C method name which | |
9086 | may have a '+' or '-' succeeded by a '['. */ | |
9087 | cursal = get_current_source_symtab_and_line (); | |
9088 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9089 | { |
a20714ff | 9090 | const char *spec = NULL; |
cc80f267 | 9091 | |
f00aae0f | 9092 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9093 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9094 | |
f00aae0f | 9095 | if (!cursal.symtab |
a20714ff PA |
9096 | || (spec != NULL |
9097 | && strchr ("+-", spec[0]) != NULL | |
9098 | && spec[1] != '[')) | |
f00aae0f | 9099 | { |
c2f4122d | 9100 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9101 | get_last_displayed_symtab (), |
9102 | get_last_displayed_line (), | |
9103 | canonical, NULL, NULL); | |
9104 | return; | |
9105 | } | |
c906108c | 9106 | } |
f00aae0f | 9107 | |
c2f4122d | 9108 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9109 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9110 | } |
c906108c | 9111 | |
c906108c | 9112 | |
c3f6f71d | 9113 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9114 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9115 | |
b9362cc7 | 9116 | static void |
6c5b2ebe | 9117 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9118 | { |
6c5b2ebe PA |
9119 | for (auto &sal : sals) |
9120 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9121 | } |
9122 | ||
7a697b8d SS |
9123 | /* Fast tracepoints may have restrictions on valid locations. For |
9124 | instance, a fast tracepoint using a jump instead of a trap will | |
9125 | likely have to overwrite more bytes than a trap would, and so can | |
9126 | only be placed where the instruction is longer than the jump, or a | |
9127 | multi-instruction sequence does not have a jump into the middle of | |
9128 | it, etc. */ | |
9129 | ||
9130 | static void | |
9131 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9132 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9133 | { |
6c5b2ebe | 9134 | for (const auto &sal : sals) |
7a697b8d | 9135 | { |
f8eba3c6 TT |
9136 | struct gdbarch *sarch; |
9137 | ||
6c5b2ebe | 9138 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9139 | /* We fall back to GDBARCH if there is no architecture |
9140 | associated with SAL. */ | |
9141 | if (sarch == NULL) | |
9142 | sarch = gdbarch; | |
281d762b TT |
9143 | std::string msg; |
9144 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9145 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9146 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9147 | } |
9148 | } | |
9149 | ||
018d34a4 VP |
9150 | /* Given TOK, a string specification of condition and thread, as |
9151 | accepted by the 'break' command, extract the condition | |
9152 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9153 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9154 | If no condition is found, *COND_STRING is set to NULL. |
9155 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9156 | |
9157 | static void | |
bbc13ae3 | 9158 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9159 | char **cond_string, int *thread, int *task, |
9160 | char **rest) | |
018d34a4 VP |
9161 | { |
9162 | *cond_string = NULL; | |
9163 | *thread = -1; | |
ed1d1739 KS |
9164 | *task = 0; |
9165 | *rest = NULL; | |
9166 | ||
018d34a4 VP |
9167 | while (tok && *tok) |
9168 | { | |
bbc13ae3 | 9169 | const char *end_tok; |
018d34a4 | 9170 | int toklen; |
bbc13ae3 KS |
9171 | const char *cond_start = NULL; |
9172 | const char *cond_end = NULL; | |
cc59ec59 | 9173 | |
f1735a53 | 9174 | tok = skip_spaces (tok); |
e7e0cddf SS |
9175 | |
9176 | if ((*tok == '"' || *tok == ',') && rest) | |
9177 | { | |
9178 | *rest = savestring (tok, strlen (tok)); | |
9179 | return; | |
9180 | } | |
9181 | ||
f1735a53 | 9182 | end_tok = skip_to_space (tok); |
d634f2de | 9183 | |
018d34a4 | 9184 | toklen = end_tok - tok; |
d634f2de | 9185 | |
018d34a4 VP |
9186 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9187 | { | |
9188 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9189 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9190 | cond_end = tok; |
d634f2de | 9191 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9192 | } |
9193 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9194 | { | |
5d5658a1 PA |
9195 | const char *tmptok; |
9196 | struct thread_info *thr; | |
d634f2de | 9197 | |
018d34a4 | 9198 | tok = end_tok + 1; |
5d5658a1 | 9199 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9200 | if (tok == tmptok) |
9201 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9202 | *thread = thr->global_num; |
bbc13ae3 | 9203 | tok = tmptok; |
018d34a4 | 9204 | } |
4a306c9a JB |
9205 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9206 | { | |
9207 | char *tmptok; | |
9208 | ||
9209 | tok = end_tok + 1; | |
bbc13ae3 | 9210 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9211 | if (tok == tmptok) |
9212 | error (_("Junk after task keyword.")); | |
9213 | if (!valid_task_id (*task)) | |
b6199126 | 9214 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9215 | tok = tmptok; |
4a306c9a | 9216 | } |
e7e0cddf SS |
9217 | else if (rest) |
9218 | { | |
9219 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9220 | return; |
e7e0cddf | 9221 | } |
018d34a4 VP |
9222 | else |
9223 | error (_("Junk at end of arguments.")); | |
9224 | } | |
9225 | } | |
9226 | ||
0fb4aa4b PA |
9227 | /* Decode a static tracepoint marker spec. */ |
9228 | ||
6c5b2ebe | 9229 | static std::vector<symtab_and_line> |
f00aae0f | 9230 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9231 | { |
f00aae0f KS |
9232 | const char *p = &(*arg_p)[3]; |
9233 | const char *endp; | |
0fb4aa4b | 9234 | |
f1735a53 | 9235 | p = skip_spaces (p); |
0fb4aa4b | 9236 | |
f1735a53 | 9237 | endp = skip_to_space (p); |
0fb4aa4b | 9238 | |
81b1e71c | 9239 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9240 | |
5d9310c4 SM |
9241 | std::vector<static_tracepoint_marker> markers |
9242 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9243 | if (markers.empty ()) | |
81b1e71c TT |
9244 | error (_("No known static tracepoint marker named %s"), |
9245 | marker_str.c_str ()); | |
0fb4aa4b | 9246 | |
6c5b2ebe | 9247 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9248 | sals.reserve (markers.size ()); |
0fb4aa4b | 9249 | |
5d9310c4 | 9250 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9251 | { |
5d9310c4 SM |
9252 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9253 | sal.pc = marker.address; | |
6c5b2ebe | 9254 | sals.push_back (sal); |
5d9310c4 | 9255 | } |
0fb4aa4b | 9256 | |
0fb4aa4b PA |
9257 | *arg_p = endp; |
9258 | return sals; | |
9259 | } | |
9260 | ||
f00aae0f | 9261 | /* See breakpoint.h. */ |
0101ce28 | 9262 | |
8cdf0e15 VP |
9263 | int |
9264 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9265 | const struct event_location *location, |
9266 | const char *cond_string, | |
9267 | int thread, const char *extra_string, | |
f00aae0f | 9268 | int parse_extra, |
0fb4aa4b | 9269 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9270 | int ignore_count, |
9271 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9272 | const struct breakpoint_ops *ops, |
44f238bb PA |
9273 | int from_tty, int enabled, int internal, |
9274 | unsigned flags) | |
c3f6f71d | 9275 | { |
7efd8fc2 | 9276 | struct linespec_result canonical; |
80c99de1 | 9277 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9278 | int pending = 0; |
4a306c9a | 9279 | int task = 0; |
86b17b60 | 9280 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9281 | |
348d480f PA |
9282 | gdb_assert (ops != NULL); |
9283 | ||
f00aae0f KS |
9284 | /* If extra_string isn't useful, set it to NULL. */ |
9285 | if (extra_string != NULL && *extra_string == '\0') | |
9286 | extra_string = NULL; | |
9287 | ||
492d29ea | 9288 | TRY |
b78a6381 | 9289 | { |
f00aae0f | 9290 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9291 | } |
492d29ea | 9292 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9293 | { |
492d29ea PA |
9294 | /* If caller is interested in rc value from parse, set |
9295 | value. */ | |
9296 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9297 | { |
05ff989b AC |
9298 | /* If pending breakpoint support is turned off, throw |
9299 | error. */ | |
fa8d40ab JJ |
9300 | |
9301 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9302 | throw_exception (e); |
9303 | ||
9304 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9305 | |
05ff989b AC |
9306 | /* If pending breakpoint support is auto query and the user |
9307 | selects no, then simply return the error code. */ | |
059fb39f | 9308 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9309 | && !nquery (_("Make %s pending on future shared library load? "), |
9310 | bptype_string (type_wanted))) | |
fd9b8c24 | 9311 | return 0; |
fa8d40ab | 9312 | |
05ff989b AC |
9313 | /* At this point, either the user was queried about setting |
9314 | a pending breakpoint and selected yes, or pending | |
9315 | breakpoint behavior is on and thus a pending breakpoint | |
9316 | is defaulted on behalf of the user. */ | |
f00aae0f | 9317 | pending = 1; |
0101ce28 | 9318 | } |
492d29ea PA |
9319 | else |
9320 | throw_exception (e); | |
0101ce28 | 9321 | } |
492d29ea PA |
9322 | END_CATCH |
9323 | ||
6c5b2ebe | 9324 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9325 | return 0; |
c3f6f71d | 9326 | |
c3f6f71d JM |
9327 | /* ----------------------------- SNIP ----------------------------- |
9328 | Anything added to the cleanup chain beyond this point is assumed | |
9329 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9330 | then the memory is not reclaimed. */ |
9331 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9332 | |
c3f6f71d JM |
9333 | /* Resolve all line numbers to PC's and verify that the addresses |
9334 | are ok for the target. */ | |
0101ce28 | 9335 | if (!pending) |
f8eba3c6 | 9336 | { |
6c5b2ebe PA |
9337 | for (auto &lsal : canonical.lsals) |
9338 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9339 | } |
c3f6f71d | 9340 | |
7a697b8d | 9341 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9342 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9343 | { |
6c5b2ebe PA |
9344 | for (const auto &lsal : canonical.lsals) |
9345 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9346 | } |
7a697b8d | 9347 | |
c3f6f71d JM |
9348 | /* Verify that condition can be parsed, before setting any |
9349 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9350 | breakpoint. */ |
0101ce28 | 9351 | if (!pending) |
c3f6f71d | 9352 | { |
e1e01040 PA |
9353 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9354 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9355 | ||
f00aae0f | 9356 | if (parse_extra) |
72b2ff0e | 9357 | { |
0878d0fa | 9358 | char *rest; |
e1e01040 | 9359 | char *cond; |
52d361e1 | 9360 | |
6c5b2ebe | 9361 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9362 | |
0878d0fa YQ |
9363 | /* Here we only parse 'arg' to separate condition |
9364 | from thread number, so parsing in context of first | |
9365 | sal is OK. When setting the breakpoint we'll | |
9366 | re-parse it in context of each sal. */ | |
9367 | ||
6c5b2ebe | 9368 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9369 | &cond, &thread, &task, &rest); |
9370 | cond_string_copy.reset (cond); | |
9371 | extra_string_copy.reset (rest); | |
72b2ff0e | 9372 | } |
2f069f6f | 9373 | else |
72b2ff0e | 9374 | { |
f00aae0f KS |
9375 | if (type_wanted != bp_dprintf |
9376 | && extra_string != NULL && *extra_string != '\0') | |
9377 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9378 | |
9379 | /* Create a private copy of condition string. */ | |
9380 | if (cond_string) | |
e1e01040 | 9381 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9382 | /* Create a private copy of any extra string. */ |
9383 | if (extra_string) | |
e1e01040 | 9384 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9385 | } |
0fb4aa4b | 9386 | |
52d361e1 | 9387 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9388 | std::move (cond_string_copy), |
9389 | std::move (extra_string_copy), | |
9390 | type_wanted, | |
d9b3f62e PA |
9391 | tempflag ? disp_del : disp_donttouch, |
9392 | thread, task, ignore_count, ops, | |
44f238bb | 9393 | from_tty, enabled, internal, flags); |
c906108c | 9394 | } |
0101ce28 JJ |
9395 | else |
9396 | { | |
a5e364af | 9397 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9398 | |
a5e364af | 9399 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9400 | b->location = copy_event_location (location); |
bfccc43c | 9401 | |
f00aae0f KS |
9402 | if (parse_extra) |
9403 | b->cond_string = NULL; | |
e12c7713 MK |
9404 | else |
9405 | { | |
9406 | /* Create a private copy of condition string. */ | |
e1e01040 | 9407 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9408 | b->thread = thread; |
e12c7713 | 9409 | } |
f00aae0f KS |
9410 | |
9411 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9412 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9413 | b->ignore_count = ignore_count; |
0101ce28 | 9414 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9415 | b->condition_not_parsed = 1; |
41447f92 | 9416 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9417 | if ((type_wanted != bp_breakpoint |
9418 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9419 | b->pspace = current_program_space; |
8bea4e01 | 9420 | |
b270e6f9 | 9421 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9422 | } |
9423 | ||
6c5b2ebe | 9424 | if (canonical.lsals.size () > 1) |
95a42b64 | 9425 | { |
3e43a32a MS |
9426 | warning (_("Multiple breakpoints were set.\nUse the " |
9427 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9428 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9429 | } |
9430 | ||
80c99de1 PA |
9431 | /* That's it. Discard the cleanups for data inserted into the |
9432 | breakpoint. */ | |
9433 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9434 | |
80c99de1 | 9435 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9436 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9437 | |
9438 | return 1; | |
c3f6f71d | 9439 | } |
c906108c | 9440 | |
348d480f | 9441 | /* Set a breakpoint. |
72b2ff0e VP |
9442 | ARG is a string describing breakpoint address, |
9443 | condition, and thread. | |
9444 | FLAG specifies if a breakpoint is hardware on, | |
9445 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9446 | and BP_TEMPFLAG. */ | |
348d480f | 9447 | |
98deb0da | 9448 | static void |
f2fc3015 | 9449 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9450 | { |
72b2ff0e | 9451 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9452 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9453 | ? bp_hardware_breakpoint | |
9454 | : bp_breakpoint); | |
55aa24fb | 9455 | struct breakpoint_ops *ops; |
f00aae0f | 9456 | |
ffc2605c | 9457 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9458 | |
9459 | /* Matching breakpoints on probes. */ | |
5b56227b | 9460 | if (location != NULL |
ffc2605c | 9461 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9462 | ops = &bkpt_probe_breakpoint_ops; |
9463 | else | |
9464 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9465 | |
8cdf0e15 | 9466 | create_breakpoint (get_current_arch (), |
ffc2605c | 9467 | location.get (), |
f00aae0f | 9468 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9469 | tempflag, type_wanted, |
8cdf0e15 VP |
9470 | 0 /* Ignore count */, |
9471 | pending_break_support, | |
55aa24fb | 9472 | ops, |
8cdf0e15 | 9473 | from_tty, |
84f4c1fe | 9474 | 1 /* enabled */, |
44f238bb PA |
9475 | 0 /* internal */, |
9476 | 0); | |
c906108c SS |
9477 | } |
9478 | ||
c906108c SS |
9479 | /* Helper function for break_command_1 and disassemble_command. */ |
9480 | ||
9481 | void | |
fba45db2 | 9482 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9483 | { |
9484 | CORE_ADDR pc; | |
9485 | ||
9486 | if (sal->pc == 0 && sal->symtab != NULL) | |
9487 | { | |
9488 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9489 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9490 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9491 | sal->pc = pc; |
6a048695 | 9492 | |
4a64f543 MS |
9493 | /* If this SAL corresponds to a breakpoint inserted using a line |
9494 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9495 | if (sal->explicit_line) |
059acae7 | 9496 | skip_prologue_sal (sal); |
c906108c SS |
9497 | } |
9498 | ||
9499 | if (sal->section == 0 && sal->symtab != NULL) | |
9500 | { | |
346d1dfe | 9501 | const struct blockvector *bv; |
3977b71f | 9502 | const struct block *b; |
c5aa993b | 9503 | struct symbol *sym; |
c906108c | 9504 | |
43f3e411 DE |
9505 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9506 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9507 | if (bv != NULL) |
9508 | { | |
7f0df278 | 9509 | sym = block_linkage_function (b); |
c906108c SS |
9510 | if (sym != NULL) |
9511 | { | |
eb822aa6 DE |
9512 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9513 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9514 | sym); | |
c906108c SS |
9515 | } |
9516 | else | |
9517 | { | |
4a64f543 MS |
9518 | /* It really is worthwhile to have the section, so we'll |
9519 | just have to look harder. This case can be executed | |
9520 | if we have line numbers but no functions (as can | |
9521 | happen in assembly source). */ | |
c906108c | 9522 | |
5ed8105e | 9523 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9524 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9525 | |
5ed8105e | 9526 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9527 | if (msym.minsym) |
efd66ac6 | 9528 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9529 | } |
9530 | } | |
9531 | } | |
9532 | } | |
9533 | ||
9534 | void | |
0b39b52e | 9535 | break_command (const char *arg, int from_tty) |
c906108c | 9536 | { |
db107f19 | 9537 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9538 | } |
9539 | ||
c906108c | 9540 | void |
0b39b52e | 9541 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9542 | { |
db107f19 | 9543 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9544 | } |
9545 | ||
c906108c | 9546 | static void |
0b39b52e | 9547 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9548 | { |
db107f19 | 9549 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9550 | } |
9551 | ||
9552 | static void | |
0b39b52e | 9553 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9554 | { |
db107f19 | 9555 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9556 | } |
9557 | ||
9558 | static void | |
ee7ddd71 | 9559 | stop_command (const char *arg, int from_tty) |
c906108c | 9560 | { |
a3f17187 | 9561 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9562 | Usage: stop in <function | address>\n\ |
a3f17187 | 9563 | stop at <line>\n")); |
c906108c SS |
9564 | } |
9565 | ||
9566 | static void | |
4495129a | 9567 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9568 | { |
9569 | int badInput = 0; | |
9570 | ||
c5aa993b | 9571 | if (arg == (char *) NULL) |
c906108c SS |
9572 | badInput = 1; |
9573 | else if (*arg != '*') | |
9574 | { | |
4495129a | 9575 | const char *argptr = arg; |
c906108c SS |
9576 | int hasColon = 0; |
9577 | ||
4a64f543 | 9578 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9579 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9580 | function/method name. */ |
c906108c | 9581 | while (*argptr && !hasColon) |
c5aa993b JM |
9582 | { |
9583 | hasColon = (*argptr == ':'); | |
9584 | argptr++; | |
9585 | } | |
c906108c SS |
9586 | |
9587 | if (hasColon) | |
c5aa993b | 9588 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9589 | else |
c5aa993b | 9590 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9591 | } |
9592 | ||
9593 | if (badInput) | |
a3f17187 | 9594 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9595 | else |
db107f19 | 9596 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9597 | } |
9598 | ||
9599 | static void | |
4495129a | 9600 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9601 | { |
9602 | int badInput = 0; | |
9603 | ||
c5aa993b | 9604 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9605 | badInput = 1; |
9606 | else | |
9607 | { | |
4495129a | 9608 | const char *argptr = arg; |
c906108c SS |
9609 | int hasColon = 0; |
9610 | ||
4a64f543 MS |
9611 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9612 | it is probably a line number. */ | |
c906108c | 9613 | while (*argptr && !hasColon) |
c5aa993b JM |
9614 | { |
9615 | hasColon = (*argptr == ':'); | |
9616 | argptr++; | |
9617 | } | |
c906108c SS |
9618 | |
9619 | if (hasColon) | |
c5aa993b | 9620 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9621 | else |
c5aa993b | 9622 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9623 | } |
9624 | ||
9625 | if (badInput) | |
a3f17187 | 9626 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9627 | else |
db107f19 | 9628 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9629 | } |
9630 | ||
e7e0cddf SS |
9631 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9632 | with a prewired command list consisting of a single output command, | |
9633 | built from extra arguments supplied on the dprintf command | |
9634 | line. */ | |
9635 | ||
da821c7b | 9636 | static void |
0b39b52e | 9637 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9638 | { |
ffc2605c | 9639 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9640 | |
9641 | /* If non-NULL, ARG should have been advanced past the location; | |
9642 | the next character must be ','. */ | |
9643 | if (arg != NULL) | |
9644 | { | |
9645 | if (arg[0] != ',' || arg[1] == '\0') | |
9646 | error (_("Format string required")); | |
9647 | else | |
9648 | { | |
9649 | /* Skip the comma. */ | |
9650 | ++arg; | |
9651 | } | |
9652 | } | |
9653 | ||
e7e0cddf | 9654 | create_breakpoint (get_current_arch (), |
ffc2605c | 9655 | location.get (), |
f00aae0f | 9656 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9657 | 0, bp_dprintf, |
9658 | 0 /* Ignore count */, | |
9659 | pending_break_support, | |
9660 | &dprintf_breakpoint_ops, | |
9661 | from_tty, | |
9662 | 1 /* enabled */, | |
9663 | 0 /* internal */, | |
9664 | 0); | |
9665 | } | |
9666 | ||
d3ce09f5 | 9667 | static void |
0b39b52e | 9668 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9669 | { |
9670 | error (_("May only run agent-printf on the target")); | |
9671 | } | |
9672 | ||
f1310107 TJB |
9673 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9674 | ranged breakpoints. */ | |
9675 | ||
9676 | static int | |
9677 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9678 | const address_space *aspace, |
09ac7c10 TT |
9679 | CORE_ADDR bp_addr, |
9680 | const struct target_waitstatus *ws) | |
f1310107 | 9681 | { |
09ac7c10 | 9682 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9683 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9684 | return 0; |
9685 | ||
f1310107 TJB |
9686 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9687 | bl->length, aspace, bp_addr); | |
9688 | } | |
9689 | ||
9690 | /* Implement the "resources_needed" breakpoint_ops method for | |
9691 | ranged breakpoints. */ | |
9692 | ||
9693 | static int | |
9694 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9695 | { | |
9696 | return target_ranged_break_num_registers (); | |
9697 | } | |
9698 | ||
9699 | /* Implement the "print_it" breakpoint_ops method for | |
9700 | ranged breakpoints. */ | |
9701 | ||
9702 | static enum print_stop_action | |
348d480f | 9703 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9704 | { |
348d480f | 9705 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9706 | struct bp_location *bl = b->loc; |
79a45e25 | 9707 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9708 | |
9709 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9710 | ||
9711 | /* Ranged breakpoints have only one location. */ | |
9712 | gdb_assert (bl && bl->next == NULL); | |
9713 | ||
9714 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9715 | |
9716 | maybe_print_thread_hit_breakpoint (uiout); | |
9717 | ||
f1310107 | 9718 | if (b->disposition == disp_del) |
112e8700 | 9719 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9720 | else |
112e8700 SM |
9721 | uiout->text ("Ranged breakpoint "); |
9722 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9723 | { |
112e8700 | 9724 | uiout->field_string ("reason", |
f1310107 | 9725 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9726 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9727 | } |
112e8700 SM |
9728 | uiout->field_int ("bkptno", b->number); |
9729 | uiout->text (", "); | |
f1310107 TJB |
9730 | |
9731 | return PRINT_SRC_AND_LOC; | |
9732 | } | |
9733 | ||
9734 | /* Implement the "print_one" breakpoint_ops method for | |
9735 | ranged breakpoints. */ | |
9736 | ||
9737 | static void | |
9738 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9739 | struct bp_location **last_loc) | |
9740 | { | |
9741 | struct bp_location *bl = b->loc; | |
9742 | struct value_print_options opts; | |
79a45e25 | 9743 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9744 | |
9745 | /* Ranged breakpoints have only one location. */ | |
9746 | gdb_assert (bl && bl->next == NULL); | |
9747 | ||
9748 | get_user_print_options (&opts); | |
9749 | ||
9750 | if (opts.addressprint) | |
9751 | /* We don't print the address range here, it will be printed later | |
9752 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9753 | uiout->field_skip ("addr"); |
f1310107 TJB |
9754 | annotate_field (5); |
9755 | print_breakpoint_location (b, bl); | |
9756 | *last_loc = bl; | |
9757 | } | |
9758 | ||
9759 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9760 | ranged breakpoints. */ | |
9761 | ||
9762 | static void | |
9763 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9764 | struct ui_out *uiout) | |
9765 | { | |
9766 | CORE_ADDR address_start, address_end; | |
9767 | struct bp_location *bl = b->loc; | |
d7e74731 | 9768 | string_file stb; |
f1310107 TJB |
9769 | |
9770 | gdb_assert (bl); | |
9771 | ||
9772 | address_start = bl->address; | |
9773 | address_end = address_start + bl->length - 1; | |
9774 | ||
112e8700 | 9775 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9776 | stb.printf ("[%s, %s]", |
9777 | print_core_address (bl->gdbarch, address_start), | |
9778 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9779 | uiout->field_stream ("addr", stb); |
9780 | uiout->text ("\n"); | |
f1310107 TJB |
9781 | } |
9782 | ||
9783 | /* Implement the "print_mention" breakpoint_ops method for | |
9784 | ranged breakpoints. */ | |
9785 | ||
9786 | static void | |
9787 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9788 | { | |
9789 | struct bp_location *bl = b->loc; | |
79a45e25 | 9790 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9791 | |
9792 | gdb_assert (bl); | |
9793 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9794 | ||
2d33446d TT |
9795 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9796 | b->number, paddress (bl->gdbarch, bl->address), | |
9797 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9798 | } |
9799 | ||
9800 | /* Implement the "print_recreate" breakpoint_ops method for | |
9801 | ranged breakpoints. */ | |
9802 | ||
9803 | static void | |
9804 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9805 | { | |
f00aae0f | 9806 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9807 | event_location_to_string (b->location.get ()), |
9808 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9809 | print_recreate_thread (b, fp); |
f1310107 TJB |
9810 | } |
9811 | ||
9812 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9813 | ||
2060206e | 9814 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9815 | |
9816 | /* Find the address where the end of the breakpoint range should be | |
9817 | placed, given the SAL of the end of the range. This is so that if | |
9818 | the user provides a line number, the end of the range is set to the | |
9819 | last instruction of the given line. */ | |
9820 | ||
9821 | static CORE_ADDR | |
9822 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9823 | { | |
9824 | CORE_ADDR end; | |
9825 | ||
9826 | /* If the user provided a PC value, use it. Otherwise, | |
9827 | find the address of the end of the given location. */ | |
9828 | if (sal.explicit_pc) | |
9829 | end = sal.pc; | |
9830 | else | |
9831 | { | |
9832 | int ret; | |
9833 | CORE_ADDR start; | |
9834 | ||
9835 | ret = find_line_pc_range (sal, &start, &end); | |
9836 | if (!ret) | |
9837 | error (_("Could not find location of the end of the range.")); | |
9838 | ||
9839 | /* find_line_pc_range returns the start of the next line. */ | |
9840 | end--; | |
9841 | } | |
9842 | ||
9843 | return end; | |
9844 | } | |
9845 | ||
9846 | /* Implement the "break-range" CLI command. */ | |
9847 | ||
9848 | static void | |
0b39b52e | 9849 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9850 | { |
f2fc3015 | 9851 | const char *arg_start; |
f1310107 TJB |
9852 | struct linespec_result canonical_start, canonical_end; |
9853 | int bp_count, can_use_bp, length; | |
9854 | CORE_ADDR end; | |
9855 | struct breakpoint *b; | |
f1310107 TJB |
9856 | |
9857 | /* We don't support software ranged breakpoints. */ | |
9858 | if (target_ranged_break_num_registers () < 0) | |
9859 | error (_("This target does not support hardware ranged breakpoints.")); | |
9860 | ||
9861 | bp_count = hw_breakpoint_used_count (); | |
9862 | bp_count += target_ranged_break_num_registers (); | |
9863 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9864 | bp_count, 0); | |
9865 | if (can_use_bp < 0) | |
9866 | error (_("Hardware breakpoints used exceeds limit.")); | |
9867 | ||
f8eba3c6 | 9868 | arg = skip_spaces (arg); |
f1310107 TJB |
9869 | if (arg == NULL || arg[0] == '\0') |
9870 | error(_("No address range specified.")); | |
9871 | ||
f8eba3c6 | 9872 | arg_start = arg; |
ffc2605c TT |
9873 | event_location_up start_location = string_to_event_location (&arg, |
9874 | current_language); | |
9875 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9876 | |
9877 | if (arg[0] != ',') | |
9878 | error (_("Too few arguments.")); | |
6c5b2ebe | 9879 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9880 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9881 | |
6c5b2ebe | 9882 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9883 | |
6c5b2ebe PA |
9884 | if (canonical_start.lsals.size () > 1 |
9885 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9886 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9887 | ||
6c5b2ebe | 9888 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9889 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9890 | |
9891 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9892 | arg = skip_spaces (arg); |
f1310107 TJB |
9893 | |
9894 | /* Parse the end location. */ | |
9895 | ||
f1310107 TJB |
9896 | arg_start = arg; |
9897 | ||
f8eba3c6 | 9898 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9899 | parse_breakpoint_sals because we need to specify the start location's |
9900 | symtab and line as the default symtab and line for the end of the | |
9901 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9902 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9903 | event_location_up end_location = string_to_event_location (&arg, |
9904 | current_language); | |
9905 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9906 | sal_start.symtab, sal_start.line, |
9907 | &canonical_end, NULL, NULL); | |
9908 | ||
6c5b2ebe | 9909 | if (canonical_end.lsals.empty ()) |
f1310107 | 9910 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9911 | |
6c5b2ebe PA |
9912 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9913 | if (canonical_end.lsals.size () > 1 | |
9914 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9915 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9916 | ||
6c5b2ebe | 9917 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9918 | |
9919 | end = find_breakpoint_range_end (sal_end); | |
9920 | if (sal_start.pc > end) | |
177b42fe | 9921 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9922 | |
9923 | length = end - sal_start.pc + 1; | |
9924 | if (length < 0) | |
9925 | /* Length overflowed. */ | |
9926 | error (_("Address range too large.")); | |
9927 | else if (length == 1) | |
9928 | { | |
9929 | /* This range is simple enough to be handled by | |
9930 | the `hbreak' command. */ | |
81b1e71c | 9931 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9932 | |
9933 | return; | |
9934 | } | |
9935 | ||
9936 | /* Now set up the breakpoint. */ | |
9937 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9938 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9939 | set_breakpoint_count (breakpoint_count + 1); |
9940 | b->number = breakpoint_count; | |
9941 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9942 | b->location = std::move (start_location); |
9943 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9944 | b->loc->length = length; |
9945 | ||
f1310107 | 9946 | mention (b); |
76727919 | 9947 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9948 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9949 | } |
9950 | ||
4a64f543 MS |
9951 | /* Return non-zero if EXP is verified as constant. Returned zero |
9952 | means EXP is variable. Also the constant detection may fail for | |
9953 | some constant expressions and in such case still falsely return | |
9954 | zero. */ | |
2e6e3d9c | 9955 | |
65d79d4b SDJ |
9956 | static int |
9957 | watchpoint_exp_is_const (const struct expression *exp) | |
9958 | { | |
9959 | int i = exp->nelts; | |
9960 | ||
9961 | while (i > 0) | |
9962 | { | |
9963 | int oplenp, argsp; | |
9964 | ||
9965 | /* We are only interested in the descriptor of each element. */ | |
9966 | operator_length (exp, i, &oplenp, &argsp); | |
9967 | i -= oplenp; | |
9968 | ||
9969 | switch (exp->elts[i].opcode) | |
9970 | { | |
9971 | case BINOP_ADD: | |
9972 | case BINOP_SUB: | |
9973 | case BINOP_MUL: | |
9974 | case BINOP_DIV: | |
9975 | case BINOP_REM: | |
9976 | case BINOP_MOD: | |
9977 | case BINOP_LSH: | |
9978 | case BINOP_RSH: | |
9979 | case BINOP_LOGICAL_AND: | |
9980 | case BINOP_LOGICAL_OR: | |
9981 | case BINOP_BITWISE_AND: | |
9982 | case BINOP_BITWISE_IOR: | |
9983 | case BINOP_BITWISE_XOR: | |
9984 | case BINOP_EQUAL: | |
9985 | case BINOP_NOTEQUAL: | |
9986 | case BINOP_LESS: | |
9987 | case BINOP_GTR: | |
9988 | case BINOP_LEQ: | |
9989 | case BINOP_GEQ: | |
9990 | case BINOP_REPEAT: | |
9991 | case BINOP_COMMA: | |
9992 | case BINOP_EXP: | |
9993 | case BINOP_MIN: | |
9994 | case BINOP_MAX: | |
9995 | case BINOP_INTDIV: | |
9996 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9997 | case TERNOP_COND: |
9998 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9999 | |
10000 | case OP_LONG: | |
edd079d9 | 10001 | case OP_FLOAT: |
65d79d4b SDJ |
10002 | case OP_LAST: |
10003 | case OP_COMPLEX: | |
10004 | case OP_STRING: | |
65d79d4b SDJ |
10005 | case OP_ARRAY: |
10006 | case OP_TYPE: | |
608b4967 TT |
10007 | case OP_TYPEOF: |
10008 | case OP_DECLTYPE: | |
6e72ca20 | 10009 | case OP_TYPEID: |
65d79d4b SDJ |
10010 | case OP_NAME: |
10011 | case OP_OBJC_NSSTRING: | |
10012 | ||
10013 | case UNOP_NEG: | |
10014 | case UNOP_LOGICAL_NOT: | |
10015 | case UNOP_COMPLEMENT: | |
10016 | case UNOP_ADDR: | |
10017 | case UNOP_HIGH: | |
aeaa2474 | 10018 | case UNOP_CAST: |
9eaf6705 TT |
10019 | |
10020 | case UNOP_CAST_TYPE: | |
10021 | case UNOP_REINTERPRET_CAST: | |
10022 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10023 | /* Unary, binary and ternary operators: We have to check |
10024 | their operands. If they are constant, then so is the | |
10025 | result of that operation. For instance, if A and B are | |
10026 | determined to be constants, then so is "A + B". | |
10027 | ||
10028 | UNOP_IND is one exception to the rule above, because the | |
10029 | value of *ADDR is not necessarily a constant, even when | |
10030 | ADDR is. */ | |
65d79d4b SDJ |
10031 | break; |
10032 | ||
10033 | case OP_VAR_VALUE: | |
10034 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10035 | |
65d79d4b | 10036 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10037 | possible that a buggy compiler could mark a variable as |
10038 | constant even when it is not, and TYPE_CONST would return | |
10039 | true in this case, while SYMBOL_CLASS wouldn't. | |
10040 | ||
10041 | We also have to check for function symbols because they | |
10042 | are always constant. */ | |
65d79d4b SDJ |
10043 | { |
10044 | struct symbol *s = exp->elts[i + 2].symbol; | |
10045 | ||
10046 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10047 | && SYMBOL_CLASS (s) != LOC_CONST | |
10048 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10049 | return 0; | |
10050 | break; | |
10051 | } | |
10052 | ||
10053 | /* The default action is to return 0 because we are using | |
10054 | the optimistic approach here: If we don't know something, | |
10055 | then it is not a constant. */ | |
10056 | default: | |
10057 | return 0; | |
10058 | } | |
10059 | } | |
10060 | ||
10061 | return 1; | |
10062 | } | |
10063 | ||
c1fc2657 | 10064 | /* Watchpoint destructor. */ |
3a5c3e22 | 10065 | |
c1fc2657 | 10066 | watchpoint::~watchpoint () |
3a5c3e22 | 10067 | { |
c1fc2657 SM |
10068 | xfree (this->exp_string); |
10069 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10070 | } |
10071 | ||
348d480f PA |
10072 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10073 | ||
10074 | static void | |
10075 | re_set_watchpoint (struct breakpoint *b) | |
10076 | { | |
3a5c3e22 PA |
10077 | struct watchpoint *w = (struct watchpoint *) b; |
10078 | ||
348d480f PA |
10079 | /* Watchpoint can be either on expression using entirely global |
10080 | variables, or it can be on local variables. | |
10081 | ||
10082 | Watchpoints of the first kind are never auto-deleted, and even | |
10083 | persist across program restarts. Since they can use variables | |
10084 | from shared libraries, we need to reparse expression as libraries | |
10085 | are loaded and unloaded. | |
10086 | ||
10087 | Watchpoints on local variables can also change meaning as result | |
10088 | of solib event. For example, if a watchpoint uses both a local | |
10089 | and a global variables in expression, it's a local watchpoint, | |
10090 | but unloading of a shared library will make the expression | |
10091 | invalid. This is not a very common use case, but we still | |
10092 | re-evaluate expression, to avoid surprises to the user. | |
10093 | ||
10094 | Note that for local watchpoints, we re-evaluate it only if | |
10095 | watchpoints frame id is still valid. If it's not, it means the | |
10096 | watchpoint is out of scope and will be deleted soon. In fact, | |
10097 | I'm not sure we'll ever be called in this case. | |
10098 | ||
10099 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10100 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10101 | |
3a5c3e22 PA |
10102 | Don't do anything about disabled watchpoints, since they will be |
10103 | reevaluated again when enabled. */ | |
10104 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10105 | } |
10106 | ||
77b06cd7 TJB |
10107 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10108 | ||
10109 | static int | |
10110 | insert_watchpoint (struct bp_location *bl) | |
10111 | { | |
3a5c3e22 PA |
10112 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10113 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10114 | |
10115 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10116 | w->cond_exp.get ()); |
77b06cd7 TJB |
10117 | } |
10118 | ||
10119 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10120 | ||
10121 | static int | |
73971819 | 10122 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10123 | { |
3a5c3e22 PA |
10124 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10125 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10126 | |
10127 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10128 | w->cond_exp.get ()); |
e09342b5 TJB |
10129 | } |
10130 | ||
e09342b5 | 10131 | static int |
348d480f | 10132 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10133 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10134 | const struct target_waitstatus *ws) |
e09342b5 | 10135 | { |
348d480f | 10136 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10137 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10138 | |
348d480f PA |
10139 | /* Continuable hardware watchpoints are treated as non-existent if the |
10140 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10141 | some data address). Otherwise gdb won't stop on a break instruction | |
10142 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10143 | been defined. Also skip watchpoints which we know did not trigger | |
10144 | (did not match the data address). */ | |
10145 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10146 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10147 | return 0; |
9c06b0b4 | 10148 | |
348d480f | 10149 | return 1; |
9c06b0b4 TJB |
10150 | } |
10151 | ||
348d480f PA |
10152 | static void |
10153 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10154 | { |
348d480f | 10155 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10156 | |
348d480f | 10157 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10158 | } |
10159 | ||
10160 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10161 | hardware watchpoints. */ |
9c06b0b4 TJB |
10162 | |
10163 | static int | |
348d480f | 10164 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10165 | { |
3a5c3e22 PA |
10166 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10167 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10168 | |
10169 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10170 | } |
10171 | ||
10172 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10173 | hardware watchpoints. */ |
9c06b0b4 TJB |
10174 | |
10175 | static int | |
348d480f | 10176 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10177 | { |
efa80663 PA |
10178 | /* Read and access watchpoints only work with hardware support. */ |
10179 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10180 | } |
10181 | ||
9c06b0b4 | 10182 | static enum print_stop_action |
348d480f | 10183 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10184 | { |
348d480f | 10185 | struct breakpoint *b; |
348d480f | 10186 | enum print_stop_action result; |
3a5c3e22 | 10187 | struct watchpoint *w; |
79a45e25 | 10188 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10189 | |
10190 | gdb_assert (bs->bp_location_at != NULL); | |
10191 | ||
348d480f | 10192 | b = bs->breakpoint_at; |
3a5c3e22 | 10193 | w = (struct watchpoint *) b; |
348d480f | 10194 | |
f303dbd6 PA |
10195 | annotate_watchpoint (b->number); |
10196 | maybe_print_thread_hit_breakpoint (uiout); | |
10197 | ||
d7e74731 PA |
10198 | string_file stb; |
10199 | ||
76f9c9cf | 10200 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10201 | switch (b->type) |
10202 | { | |
348d480f | 10203 | case bp_watchpoint: |
9c06b0b4 | 10204 | case bp_hardware_watchpoint: |
112e8700 SM |
10205 | if (uiout->is_mi_like_p ()) |
10206 | uiout->field_string | |
10207 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10208 | mention (b); |
76f9c9cf | 10209 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10210 | uiout->text ("\nOld value = "); |
850645cf | 10211 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10212 | uiout->field_stream ("old", stb); |
10213 | uiout->text ("\nNew value = "); | |
850645cf | 10214 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10215 | uiout->field_stream ("new", stb); |
10216 | uiout->text ("\n"); | |
348d480f PA |
10217 | /* More than one watchpoint may have been triggered. */ |
10218 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10219 | break; |
10220 | ||
10221 | case bp_read_watchpoint: | |
112e8700 SM |
10222 | if (uiout->is_mi_like_p ()) |
10223 | uiout->field_string | |
10224 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10225 | mention (b); |
76f9c9cf | 10226 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10227 | uiout->text ("\nValue = "); |
850645cf | 10228 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10229 | uiout->field_stream ("value", stb); |
10230 | uiout->text ("\n"); | |
348d480f | 10231 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10232 | break; |
10233 | ||
10234 | case bp_access_watchpoint: | |
348d480f PA |
10235 | if (bs->old_val != NULL) |
10236 | { | |
112e8700 SM |
10237 | if (uiout->is_mi_like_p ()) |
10238 | uiout->field_string | |
10239 | ("reason", | |
348d480f PA |
10240 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10241 | mention (b); | |
76f9c9cf | 10242 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10243 | uiout->text ("\nOld value = "); |
850645cf | 10244 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10245 | uiout->field_stream ("old", stb); |
10246 | uiout->text ("\nNew value = "); | |
348d480f PA |
10247 | } |
10248 | else | |
10249 | { | |
10250 | mention (b); | |
112e8700 SM |
10251 | if (uiout->is_mi_like_p ()) |
10252 | uiout->field_string | |
10253 | ("reason", | |
348d480f | 10254 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10255 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10256 | uiout->text ("\nValue = "); |
348d480f | 10257 | } |
850645cf | 10258 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10259 | uiout->field_stream ("new", stb); |
10260 | uiout->text ("\n"); | |
348d480f | 10261 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10262 | break; |
10263 | default: | |
348d480f | 10264 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10265 | } |
10266 | ||
348d480f PA |
10267 | return result; |
10268 | } | |
10269 | ||
10270 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10271 | watchpoints. */ | |
10272 | ||
10273 | static void | |
10274 | print_mention_watchpoint (struct breakpoint *b) | |
10275 | { | |
3a5c3e22 | 10276 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10277 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10278 | const char *tuple_name; |
348d480f PA |
10279 | |
10280 | switch (b->type) | |
10281 | { | |
10282 | case bp_watchpoint: | |
112e8700 | 10283 | uiout->text ("Watchpoint "); |
46b9c129 | 10284 | tuple_name = "wpt"; |
348d480f PA |
10285 | break; |
10286 | case bp_hardware_watchpoint: | |
112e8700 | 10287 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10288 | tuple_name = "wpt"; |
348d480f PA |
10289 | break; |
10290 | case bp_read_watchpoint: | |
112e8700 | 10291 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10292 | tuple_name = "hw-rwpt"; |
348d480f PA |
10293 | break; |
10294 | case bp_access_watchpoint: | |
112e8700 | 10295 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10296 | tuple_name = "hw-awpt"; |
348d480f PA |
10297 | break; |
10298 | default: | |
10299 | internal_error (__FILE__, __LINE__, | |
10300 | _("Invalid hardware watchpoint type.")); | |
10301 | } | |
10302 | ||
46b9c129 | 10303 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10304 | uiout->field_int ("number", b->number); |
10305 | uiout->text (": "); | |
10306 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10307 | } |
10308 | ||
10309 | /* Implement the "print_recreate" breakpoint_ops method for | |
10310 | watchpoints. */ | |
10311 | ||
10312 | static void | |
10313 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10314 | { | |
3a5c3e22 PA |
10315 | struct watchpoint *w = (struct watchpoint *) b; |
10316 | ||
348d480f PA |
10317 | switch (b->type) |
10318 | { | |
10319 | case bp_watchpoint: | |
10320 | case bp_hardware_watchpoint: | |
10321 | fprintf_unfiltered (fp, "watch"); | |
10322 | break; | |
10323 | case bp_read_watchpoint: | |
10324 | fprintf_unfiltered (fp, "rwatch"); | |
10325 | break; | |
10326 | case bp_access_watchpoint: | |
10327 | fprintf_unfiltered (fp, "awatch"); | |
10328 | break; | |
10329 | default: | |
10330 | internal_error (__FILE__, __LINE__, | |
10331 | _("Invalid watchpoint type.")); | |
10332 | } | |
10333 | ||
3a5c3e22 | 10334 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10335 | print_recreate_thread (b, fp); |
348d480f PA |
10336 | } |
10337 | ||
427cd150 TT |
10338 | /* Implement the "explains_signal" breakpoint_ops method for |
10339 | watchpoints. */ | |
10340 | ||
47591c29 | 10341 | static int |
427cd150 TT |
10342 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10343 | { | |
10344 | /* A software watchpoint cannot cause a signal other than | |
10345 | GDB_SIGNAL_TRAP. */ | |
10346 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10347 | return 0; |
427cd150 | 10348 | |
47591c29 | 10349 | return 1; |
427cd150 TT |
10350 | } |
10351 | ||
348d480f PA |
10352 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10353 | ||
2060206e | 10354 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10355 | |
10356 | /* Implement the "insert" breakpoint_ops method for | |
10357 | masked hardware watchpoints. */ | |
10358 | ||
10359 | static int | |
10360 | insert_masked_watchpoint (struct bp_location *bl) | |
10361 | { | |
3a5c3e22 PA |
10362 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10363 | ||
10364 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10365 | bl->watchpoint_type); |
10366 | } | |
10367 | ||
10368 | /* Implement the "remove" breakpoint_ops method for | |
10369 | masked hardware watchpoints. */ | |
10370 | ||
10371 | static int | |
73971819 | 10372 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10373 | { |
3a5c3e22 PA |
10374 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10375 | ||
10376 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10377 | bl->watchpoint_type); |
10378 | } | |
10379 | ||
10380 | /* Implement the "resources_needed" breakpoint_ops method for | |
10381 | masked hardware watchpoints. */ | |
10382 | ||
10383 | static int | |
10384 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10385 | { | |
3a5c3e22 PA |
10386 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10387 | ||
10388 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10389 | } |
10390 | ||
10391 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10392 | masked hardware watchpoints. */ | |
10393 | ||
10394 | static int | |
10395 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10396 | { | |
10397 | return 0; | |
10398 | } | |
10399 | ||
10400 | /* Implement the "print_it" breakpoint_ops method for | |
10401 | masked hardware watchpoints. */ | |
10402 | ||
10403 | static enum print_stop_action | |
10404 | print_it_masked_watchpoint (bpstat bs) | |
10405 | { | |
10406 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10407 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10408 | |
10409 | /* Masked watchpoints have only one location. */ | |
10410 | gdb_assert (b->loc && b->loc->next == NULL); | |
10411 | ||
f303dbd6 PA |
10412 | annotate_watchpoint (b->number); |
10413 | maybe_print_thread_hit_breakpoint (uiout); | |
10414 | ||
348d480f PA |
10415 | switch (b->type) |
10416 | { | |
10417 | case bp_hardware_watchpoint: | |
112e8700 SM |
10418 | if (uiout->is_mi_like_p ()) |
10419 | uiout->field_string | |
10420 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10421 | break; |
10422 | ||
10423 | case bp_read_watchpoint: | |
112e8700 SM |
10424 | if (uiout->is_mi_like_p ()) |
10425 | uiout->field_string | |
10426 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10427 | break; |
10428 | ||
10429 | case bp_access_watchpoint: | |
112e8700 SM |
10430 | if (uiout->is_mi_like_p ()) |
10431 | uiout->field_string | |
10432 | ("reason", | |
348d480f PA |
10433 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10434 | break; | |
10435 | default: | |
10436 | internal_error (__FILE__, __LINE__, | |
10437 | _("Invalid hardware watchpoint type.")); | |
10438 | } | |
10439 | ||
10440 | mention (b); | |
112e8700 | 10441 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10442 | Check the underlying instruction at PC for the memory\n\ |
10443 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10444 | uiout->text ("\n"); |
9c06b0b4 TJB |
10445 | |
10446 | /* More than one watchpoint may have been triggered. */ | |
10447 | return PRINT_UNKNOWN; | |
10448 | } | |
10449 | ||
10450 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10451 | masked hardware watchpoints. */ | |
10452 | ||
10453 | static void | |
10454 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10455 | struct ui_out *uiout) | |
10456 | { | |
3a5c3e22 PA |
10457 | struct watchpoint *w = (struct watchpoint *) b; |
10458 | ||
9c06b0b4 TJB |
10459 | /* Masked watchpoints have only one location. */ |
10460 | gdb_assert (b->loc && b->loc->next == NULL); | |
10461 | ||
112e8700 SM |
10462 | uiout->text ("\tmask "); |
10463 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10464 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10465 | } |
10466 | ||
10467 | /* Implement the "print_mention" breakpoint_ops method for | |
10468 | masked hardware watchpoints. */ | |
10469 | ||
10470 | static void | |
10471 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10472 | { | |
3a5c3e22 | 10473 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10474 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10475 | const char *tuple_name; |
9c06b0b4 TJB |
10476 | |
10477 | switch (b->type) | |
10478 | { | |
10479 | case bp_hardware_watchpoint: | |
112e8700 | 10480 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10481 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10482 | break; |
10483 | case bp_read_watchpoint: | |
112e8700 | 10484 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10485 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10486 | break; |
10487 | case bp_access_watchpoint: | |
112e8700 | 10488 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10489 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10490 | break; |
10491 | default: | |
10492 | internal_error (__FILE__, __LINE__, | |
10493 | _("Invalid hardware watchpoint type.")); | |
10494 | } | |
10495 | ||
46b9c129 | 10496 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10497 | uiout->field_int ("number", b->number); |
10498 | uiout->text (": "); | |
10499 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10500 | } |
10501 | ||
10502 | /* Implement the "print_recreate" breakpoint_ops method for | |
10503 | masked hardware watchpoints. */ | |
10504 | ||
10505 | static void | |
10506 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10507 | { | |
3a5c3e22 | 10508 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10509 | char tmp[40]; |
10510 | ||
10511 | switch (b->type) | |
10512 | { | |
10513 | case bp_hardware_watchpoint: | |
10514 | fprintf_unfiltered (fp, "watch"); | |
10515 | break; | |
10516 | case bp_read_watchpoint: | |
10517 | fprintf_unfiltered (fp, "rwatch"); | |
10518 | break; | |
10519 | case bp_access_watchpoint: | |
10520 | fprintf_unfiltered (fp, "awatch"); | |
10521 | break; | |
10522 | default: | |
10523 | internal_error (__FILE__, __LINE__, | |
10524 | _("Invalid hardware watchpoint type.")); | |
10525 | } | |
10526 | ||
3a5c3e22 PA |
10527 | sprintf_vma (tmp, w->hw_wp_mask); |
10528 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10529 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10530 | } |
10531 | ||
10532 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10533 | ||
2060206e | 10534 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10535 | |
10536 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10537 | ||
10538 | static int | |
10539 | is_masked_watchpoint (const struct breakpoint *b) | |
10540 | { | |
10541 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10542 | } | |
10543 | ||
53a5351d JM |
10544 | /* accessflag: hw_write: watch write, |
10545 | hw_read: watch read, | |
10546 | hw_access: watch access (read or write) */ | |
c906108c | 10547 | static void |
bbc13ae3 | 10548 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10549 | int just_location, int internal) |
c906108c | 10550 | { |
c1fc2657 | 10551 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10552 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
850645cf | 10553 | struct value *mark, *result; |
bb9d5f81 | 10554 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10555 | const char *exp_start = NULL; |
10556 | const char *exp_end = NULL; | |
10557 | const char *tok, *end_tok; | |
9c06b0b4 | 10558 | int toklen = -1; |
bbc13ae3 KS |
10559 | const char *cond_start = NULL; |
10560 | const char *cond_end = NULL; | |
c906108c | 10561 | enum bptype bp_type; |
37e4754d | 10562 | int thread = -1; |
0cf6dd15 | 10563 | int pc = 0; |
9c06b0b4 TJB |
10564 | /* Flag to indicate whether we are going to use masks for |
10565 | the hardware watchpoint. */ | |
10566 | int use_mask = 0; | |
10567 | CORE_ADDR mask = 0; | |
c906108c | 10568 | |
37e4754d LM |
10569 | /* Make sure that we actually have parameters to parse. */ |
10570 | if (arg != NULL && arg[0] != '\0') | |
10571 | { | |
bbc13ae3 KS |
10572 | const char *value_start; |
10573 | ||
10574 | exp_end = arg + strlen (arg); | |
37e4754d | 10575 | |
9c06b0b4 TJB |
10576 | /* Look for "parameter value" pairs at the end |
10577 | of the arguments string. */ | |
bbc13ae3 | 10578 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10579 | { |
10580 | /* Skip whitespace at the end of the argument list. */ | |
10581 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10582 | tok--; | |
10583 | ||
10584 | /* Find the beginning of the last token. | |
10585 | This is the value of the parameter. */ | |
10586 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10587 | tok--; | |
10588 | value_start = tok + 1; | |
10589 | ||
10590 | /* Skip whitespace. */ | |
10591 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10592 | tok--; | |
10593 | ||
10594 | end_tok = tok; | |
10595 | ||
10596 | /* Find the beginning of the second to last token. | |
10597 | This is the parameter itself. */ | |
10598 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10599 | tok--; | |
10600 | tok++; | |
10601 | toklen = end_tok - tok + 1; | |
10602 | ||
61012eef | 10603 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10604 | { |
5d5658a1 | 10605 | struct thread_info *thr; |
9c06b0b4 TJB |
10606 | /* At this point we've found a "thread" token, which means |
10607 | the user is trying to set a watchpoint that triggers | |
10608 | only in a specific thread. */ | |
5d5658a1 | 10609 | const char *endp; |
37e4754d | 10610 | |
9c06b0b4 TJB |
10611 | if (thread != -1) |
10612 | error(_("You can specify only one thread.")); | |
37e4754d | 10613 | |
9c06b0b4 | 10614 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10615 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10616 | |
5d5658a1 | 10617 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10618 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10619 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10620 | |
5d5658a1 | 10621 | thread = thr->global_num; |
9c06b0b4 | 10622 | } |
61012eef | 10623 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10624 | { |
10625 | /* We've found a "mask" token, which means the user wants to | |
10626 | create a hardware watchpoint that is going to have the mask | |
10627 | facility. */ | |
10628 | struct value *mask_value, *mark; | |
37e4754d | 10629 | |
9c06b0b4 TJB |
10630 | if (use_mask) |
10631 | error(_("You can specify only one mask.")); | |
37e4754d | 10632 | |
9c06b0b4 | 10633 | use_mask = just_location = 1; |
37e4754d | 10634 | |
9c06b0b4 TJB |
10635 | mark = value_mark (); |
10636 | mask_value = parse_to_comma_and_eval (&value_start); | |
10637 | mask = value_as_address (mask_value); | |
10638 | value_free_to_mark (mark); | |
10639 | } | |
10640 | else | |
10641 | /* We didn't recognize what we found. We should stop here. */ | |
10642 | break; | |
37e4754d | 10643 | |
9c06b0b4 TJB |
10644 | /* Truncate the string and get rid of the "parameter value" pair before |
10645 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10646 | exp_end = tok; |
9c06b0b4 | 10647 | } |
37e4754d | 10648 | } |
bbc13ae3 KS |
10649 | else |
10650 | exp_end = arg; | |
37e4754d | 10651 | |
bbc13ae3 KS |
10652 | /* Parse the rest of the arguments. From here on out, everything |
10653 | is in terms of a newly allocated string instead of the original | |
10654 | ARG. */ | |
aee1fcdf | 10655 | innermost_block.reset (); |
81b1e71c TT |
10656 | std::string expression (arg, exp_end - arg); |
10657 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10658 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10659 | exp_end = arg; |
fa8a61dc TT |
10660 | /* Remove trailing whitespace from the expression before saving it. |
10661 | This makes the eventual display of the expression string a bit | |
10662 | prettier. */ | |
10663 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10664 | --exp_end; | |
10665 | ||
65d79d4b | 10666 | /* Checking if the expression is not constant. */ |
4d01a485 | 10667 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10668 | { |
10669 | int len; | |
10670 | ||
10671 | len = exp_end - exp_start; | |
10672 | while (len > 0 && isspace (exp_start[len - 1])) | |
10673 | len--; | |
10674 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10675 | } | |
10676 | ||
aee1fcdf | 10677 | exp_valid_block = innermost_block.block (); |
c906108c | 10678 | mark = value_mark (); |
850645cf TT |
10679 | struct value *val_as_value = nullptr; |
10680 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10681 | just_location); | |
06a64a0b | 10682 | |
850645cf | 10683 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10684 | { |
850645cf TT |
10685 | saved_bitpos = value_bitpos (val_as_value); |
10686 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10687 | } |
10688 | ||
850645cf | 10689 | value_ref_ptr val; |
06a64a0b TT |
10690 | if (just_location) |
10691 | { | |
9c06b0b4 TJB |
10692 | int ret; |
10693 | ||
06a64a0b | 10694 | exp_valid_block = NULL; |
850645cf | 10695 | val = release_value (value_addr (result)); |
06a64a0b | 10696 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10697 | |
10698 | if (use_mask) | |
10699 | { | |
850645cf | 10700 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10701 | mask); |
10702 | if (ret == -1) | |
10703 | error (_("This target does not support masked watchpoints.")); | |
10704 | else if (ret == -2) | |
10705 | error (_("Invalid mask or memory region.")); | |
10706 | } | |
06a64a0b | 10707 | } |
850645cf TT |
10708 | else if (val_as_value != NULL) |
10709 | val = release_value (val_as_value); | |
c906108c | 10710 | |
f1735a53 TT |
10711 | tok = skip_spaces (arg); |
10712 | end_tok = skip_to_space (tok); | |
c906108c SS |
10713 | |
10714 | toklen = end_tok - tok; | |
10715 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10716 | { | |
aee1fcdf | 10717 | innermost_block.reset (); |
c906108c | 10718 | tok = cond_start = end_tok + 1; |
4d01a485 | 10719 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10720 | |
10721 | /* The watchpoint expression may not be local, but the condition | |
10722 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10723 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10724 | |
c906108c SS |
10725 | cond_end = tok; |
10726 | } | |
10727 | if (*tok) | |
8a3fe4f8 | 10728 | error (_("Junk at end of command.")); |
c906108c | 10729 | |
441d7c93 PA |
10730 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10731 | ||
10732 | /* Save this because create_internal_breakpoint below invalidates | |
10733 | 'wp_frame'. */ | |
10734 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10735 | |
10736 | /* If the expression is "local", then set up a "watchpoint scope" | |
10737 | breakpoint at the point where we've left the scope of the watchpoint | |
10738 | expression. Create the scope breakpoint before the watchpoint, so | |
10739 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10740 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10741 | { |
441d7c93 PA |
10742 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10743 | ||
10744 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10745 | { |
441d7c93 PA |
10746 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10747 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10748 | ||
edb3359d | 10749 | scope_breakpoint |
441d7c93 | 10750 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10751 | bp_watchpoint_scope, |
10752 | &momentary_breakpoint_ops); | |
d983da9c | 10753 | |
441d7c93 PA |
10754 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10755 | wp_frame = NULL; | |
10756 | ||
edb3359d | 10757 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10758 | |
edb3359d DJ |
10759 | /* Automatically delete the breakpoint when it hits. */ |
10760 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10761 | |
edb3359d | 10762 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10763 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10764 | |
edb3359d | 10765 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10766 | scope_breakpoint->loc->gdbarch = caller_arch; |
10767 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10768 | scope_breakpoint->loc->address |
a6d9a66e UW |
10769 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10770 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10771 | scope_breakpoint->type); |
10772 | } | |
d983da9c DJ |
10773 | } |
10774 | ||
e8369a73 AB |
10775 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10776 | watchpoints here even if hardware watchpoints are turned off, a call | |
10777 | to update_watchpoint later in this function will cause the type to | |
10778 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10779 | ||
10780 | if (accessflag == hw_read) | |
10781 | bp_type = bp_read_watchpoint; | |
10782 | else if (accessflag == hw_access) | |
10783 | bp_type = bp_access_watchpoint; | |
10784 | else | |
10785 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10786 | |
b270e6f9 | 10787 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10788 | |
348d480f | 10789 | if (use_mask) |
b270e6f9 | 10790 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10791 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10792 | else |
b270e6f9 | 10793 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10794 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10795 | w->thread = thread; |
10796 | w->disposition = disp_donttouch; | |
10797 | w->pspace = current_program_space; | |
b22e99fd | 10798 | w->exp = std::move (exp); |
3a5c3e22 PA |
10799 | w->exp_valid_block = exp_valid_block; |
10800 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10801 | if (just_location) |
10802 | { | |
850645cf TT |
10803 | struct type *t = value_type (val.get ()); |
10804 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10805 | |
43cc5389 TT |
10806 | w->exp_string_reparse |
10807 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10808 | |
3a5c3e22 | 10809 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10810 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10811 | } |
10812 | else | |
3a5c3e22 | 10813 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10814 | |
10815 | if (use_mask) | |
10816 | { | |
3a5c3e22 | 10817 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10818 | } |
10819 | else | |
10820 | { | |
3a5c3e22 | 10821 | w->val = val; |
bb9d5f81 PP |
10822 | w->val_bitpos = saved_bitpos; |
10823 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10824 | w->val_valid = 1; |
9c06b0b4 | 10825 | } |
77b06cd7 | 10826 | |
c906108c | 10827 | if (cond_start) |
c1fc2657 | 10828 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10829 | else |
c1fc2657 | 10830 | w->cond_string = 0; |
c5aa993b | 10831 | |
441d7c93 | 10832 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10833 | { |
441d7c93 | 10834 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10835 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10836 | } |
c906108c | 10837 | else |
f6bc2008 | 10838 | { |
3a5c3e22 PA |
10839 | w->watchpoint_frame = null_frame_id; |
10840 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10841 | } |
c906108c | 10842 | |
d983da9c | 10843 | if (scope_breakpoint != NULL) |
c906108c | 10844 | { |
d983da9c DJ |
10845 | /* The scope breakpoint is related to the watchpoint. We will |
10846 | need to act on them together. */ | |
c1fc2657 | 10847 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10848 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10849 | } |
d983da9c | 10850 | |
06a64a0b TT |
10851 | if (!just_location) |
10852 | value_free_to_mark (mark); | |
2d134ed3 | 10853 | |
b270e6f9 TT |
10854 | /* Finally update the new watchpoint. This creates the locations |
10855 | that should be inserted. */ | |
10856 | update_watchpoint (w.get (), 1); | |
a9634178 | 10857 | |
b270e6f9 | 10858 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10859 | } |
10860 | ||
e09342b5 | 10861 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10862 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10863 | |
c906108c | 10864 | static int |
a6535de1 | 10865 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10866 | { |
10867 | int found_memory_cnt = 0; | |
10868 | ||
10869 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10870 | if (!can_use_hw_watchpoints) |
c906108c | 10871 | return 0; |
c5aa993b | 10872 | |
a6535de1 TT |
10873 | gdb_assert (!vals.empty ()); |
10874 | struct value *head = vals[0].get (); | |
10875 | ||
5c44784c JM |
10876 | /* Make sure that the value of the expression depends only upon |
10877 | memory contents, and values computed from them within GDB. If we | |
10878 | find any register references or function calls, we can't use a | |
10879 | hardware watchpoint. | |
10880 | ||
10881 | The idea here is that evaluating an expression generates a series | |
10882 | of values, one holding the value of every subexpression. (The | |
10883 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10884 | a*b+c.) GDB's values hold almost enough information to establish | |
10885 | the criteria given above --- they identify memory lvalues, | |
10886 | register lvalues, computed values, etcetera. So we can evaluate | |
10887 | the expression, and then scan the chain of values that leaves | |
10888 | behind to decide whether we can detect any possible change to the | |
10889 | expression's final value using only hardware watchpoints. | |
10890 | ||
10891 | However, I don't think that the values returned by inferior | |
10892 | function calls are special in any way. So this function may not | |
10893 | notice that an expression involving an inferior function call | |
10894 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10895 | for (const value_ref_ptr &iter : vals) |
c906108c | 10896 | { |
a6535de1 TT |
10897 | struct value *v = iter.get (); |
10898 | ||
5c44784c | 10899 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10900 | { |
8464be76 DJ |
10901 | if (v != head && value_lazy (v)) |
10902 | /* A lazy memory lvalue in the chain is one that GDB never | |
10903 | needed to fetch; we either just used its address (e.g., | |
10904 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10905 | in `a,b'). This doesn't apply to HEAD; if that is | |
10906 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10907 | ; |
53a5351d | 10908 | else |
5c44784c JM |
10909 | { |
10910 | /* Ahh, memory we actually used! Check if we can cover | |
10911 | it with hardware watchpoints. */ | |
df407dfe | 10912 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10913 | |
10914 | /* We only watch structs and arrays if user asked for it | |
10915 | explicitly, never if they just happen to appear in a | |
10916 | middle of some value chain. */ | |
10917 | if (v == head | |
10918 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10919 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10920 | { | |
42ae5230 | 10921 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10922 | int len; |
10923 | int num_regs; | |
10924 | ||
a9634178 | 10925 | len = (target_exact_watchpoints |
e09342b5 TJB |
10926 | && is_scalar_type_recursive (vtype))? |
10927 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10928 | |
e09342b5 TJB |
10929 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10930 | if (!num_regs) | |
2e70b7b9 MS |
10931 | return 0; |
10932 | else | |
e09342b5 | 10933 | found_memory_cnt += num_regs; |
2e70b7b9 | 10934 | } |
5c44784c | 10935 | } |
c5aa993b | 10936 | } |
5086187c AC |
10937 | else if (VALUE_LVAL (v) != not_lval |
10938 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10939 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10940 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10941 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10942 | } |
10943 | ||
10944 | /* The expression itself looks suitable for using a hardware | |
10945 | watchpoint, but give the target machine a chance to reject it. */ | |
10946 | return found_memory_cnt; | |
10947 | } | |
10948 | ||
8b93c638 | 10949 | void |
f2fc3015 | 10950 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10951 | { |
84f4c1fe | 10952 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10953 | } |
10954 | ||
06a64a0b TT |
10955 | /* A helper function that looks for the "-location" argument and then |
10956 | calls watch_command_1. */ | |
10957 | ||
10958 | static void | |
0b39b52e | 10959 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10960 | { |
10961 | int just_location = 0; | |
10962 | ||
10963 | if (arg | |
10964 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10965 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10966 | { | |
e9cafbcc | 10967 | arg = skip_spaces (arg); |
06a64a0b TT |
10968 | just_location = 1; |
10969 | } | |
10970 | ||
84f4c1fe | 10971 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10972 | } |
8926118c | 10973 | |
c5aa993b | 10974 | static void |
0b39b52e | 10975 | watch_command (const char *arg, int from_tty) |
c906108c | 10976 | { |
06a64a0b | 10977 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10978 | } |
10979 | ||
8b93c638 | 10980 | void |
f2fc3015 | 10981 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10982 | { |
84f4c1fe | 10983 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10984 | } |
8926118c | 10985 | |
c5aa993b | 10986 | static void |
0b39b52e | 10987 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10988 | { |
06a64a0b | 10989 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10990 | } |
10991 | ||
8b93c638 | 10992 | void |
f2fc3015 | 10993 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10994 | { |
84f4c1fe | 10995 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10996 | } |
8926118c | 10997 | |
c5aa993b | 10998 | static void |
0b39b52e | 10999 | awatch_command (const char *arg, int from_tty) |
c906108c | 11000 | { |
06a64a0b | 11001 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11002 | } |
c906108c | 11003 | \f |
c5aa993b | 11004 | |
cfc31633 PA |
11005 | /* Data for the FSM that manages the until(location)/advance commands |
11006 | in infcmd.c. Here because it uses the mechanisms of | |
11007 | breakpoints. */ | |
c906108c | 11008 | |
cfc31633 | 11009 | struct until_break_fsm |
bfec99b2 | 11010 | { |
cfc31633 PA |
11011 | /* The base class. */ |
11012 | struct thread_fsm thread_fsm; | |
11013 | ||
11014 | /* The thread that as current when the command was executed. */ | |
11015 | int thread; | |
11016 | ||
11017 | /* The breakpoint set at the destination location. */ | |
11018 | struct breakpoint *location_breakpoint; | |
11019 | ||
11020 | /* Breakpoint set at the return address in the caller frame. May be | |
11021 | NULL. */ | |
11022 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11023 | }; |
11024 | ||
8980e177 PA |
11025 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11026 | struct thread_info *thread); | |
11027 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11028 | struct thread_info *thread); | |
cfc31633 PA |
11029 | static enum async_reply_reason |
11030 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11031 | ||
11032 | /* until_break_fsm's vtable. */ | |
11033 | ||
11034 | static struct thread_fsm_ops until_break_fsm_ops = | |
11035 | { | |
11036 | NULL, /* dtor */ | |
11037 | until_break_fsm_clean_up, | |
11038 | until_break_fsm_should_stop, | |
11039 | NULL, /* return_value */ | |
11040 | until_break_fsm_async_reply_reason, | |
11041 | }; | |
11042 | ||
11043 | /* Allocate a new until_break_command_fsm. */ | |
11044 | ||
11045 | static struct until_break_fsm * | |
8980e177 | 11046 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11047 | breakpoint_up &&location_breakpoint, |
11048 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11049 | { |
11050 | struct until_break_fsm *sm; | |
11051 | ||
11052 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11053 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11054 | |
11055 | sm->thread = thread; | |
454dafbd TT |
11056 | sm->location_breakpoint = location_breakpoint.release (); |
11057 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11058 | |
11059 | return sm; | |
11060 | } | |
11061 | ||
11062 | /* Implementation of the 'should_stop' FSM method for the | |
11063 | until(location)/advance commands. */ | |
11064 | ||
11065 | static int | |
8980e177 PA |
11066 | until_break_fsm_should_stop (struct thread_fsm *self, |
11067 | struct thread_info *tp) | |
cfc31633 PA |
11068 | { |
11069 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11070 | |
11071 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11072 | sm->location_breakpoint) != NULL | |
11073 | || (sm->caller_breakpoint != NULL | |
11074 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11075 | sm->caller_breakpoint) != NULL)) | |
11076 | thread_fsm_set_finished (self); | |
11077 | ||
11078 | return 1; | |
11079 | } | |
11080 | ||
11081 | /* Implementation of the 'clean_up' FSM method for the | |
11082 | until(location)/advance commands. */ | |
11083 | ||
c2c6d25f | 11084 | static void |
8980e177 PA |
11085 | until_break_fsm_clean_up (struct thread_fsm *self, |
11086 | struct thread_info *thread) | |
43ff13b4 | 11087 | { |
cfc31633 | 11088 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11089 | |
cfc31633 PA |
11090 | /* Clean up our temporary breakpoints. */ |
11091 | if (sm->location_breakpoint != NULL) | |
11092 | { | |
11093 | delete_breakpoint (sm->location_breakpoint); | |
11094 | sm->location_breakpoint = NULL; | |
11095 | } | |
11096 | if (sm->caller_breakpoint != NULL) | |
11097 | { | |
11098 | delete_breakpoint (sm->caller_breakpoint); | |
11099 | sm->caller_breakpoint = NULL; | |
11100 | } | |
11101 | delete_longjmp_breakpoint (sm->thread); | |
11102 | } | |
11103 | ||
11104 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11105 | until(location)/advance commands. */ | |
11106 | ||
11107 | static enum async_reply_reason | |
11108 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11109 | { | |
11110 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11111 | } |
11112 | ||
c906108c | 11113 | void |
f2fc3015 | 11114 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11115 | { |
8556afb4 PA |
11116 | struct frame_info *frame; |
11117 | struct gdbarch *frame_gdbarch; | |
11118 | struct frame_id stack_frame_id; | |
11119 | struct frame_id caller_frame_id; | |
ffc2605c | 11120 | struct cleanup *old_chain; |
186c406b TT |
11121 | int thread; |
11122 | struct thread_info *tp; | |
cfc31633 | 11123 | struct until_break_fsm *sm; |
c906108c | 11124 | |
70509625 | 11125 | clear_proceed_status (0); |
c906108c SS |
11126 | |
11127 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11128 | this function. */ |
c5aa993b | 11129 | |
ffc2605c | 11130 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11131 | |
6c5b2ebe PA |
11132 | std::vector<symtab_and_line> sals |
11133 | = (last_displayed_sal_is_valid () | |
11134 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11135 | get_last_displayed_symtab (), | |
11136 | get_last_displayed_line ()) | |
11137 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11138 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11139 | |
6c5b2ebe | 11140 | if (sals.size () != 1) |
8a3fe4f8 | 11141 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11142 | |
6c5b2ebe | 11143 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11144 | |
c906108c | 11145 | if (*arg) |
8a3fe4f8 | 11146 | error (_("Junk at end of arguments.")); |
c5aa993b | 11147 | |
c906108c | 11148 | resolve_sal_pc (&sal); |
c5aa993b | 11149 | |
186c406b | 11150 | tp = inferior_thread (); |
5d5658a1 | 11151 | thread = tp->global_num; |
186c406b | 11152 | |
883bc8d1 PA |
11153 | old_chain = make_cleanup (null_cleanup, NULL); |
11154 | ||
8556afb4 PA |
11155 | /* Note linespec handling above invalidates the frame chain. |
11156 | Installing a breakpoint also invalidates the frame chain (as it | |
11157 | may need to switch threads), so do any frame handling before | |
11158 | that. */ | |
11159 | ||
11160 | frame = get_selected_frame (NULL); | |
11161 | frame_gdbarch = get_frame_arch (frame); | |
11162 | stack_frame_id = get_stack_frame_id (frame); | |
11163 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11164 | |
ae66c1fc EZ |
11165 | /* Keep within the current frame, or in frames called by the current |
11166 | one. */ | |
edb3359d | 11167 | |
454dafbd | 11168 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11169 | if (frame_id_p (caller_frame_id)) |
c906108c | 11170 | { |
883bc8d1 | 11171 | struct symtab_and_line sal2; |
cfc31633 | 11172 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11173 | |
11174 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11175 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11176 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11177 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11178 | sal2, | |
11179 | caller_frame_id, | |
11180 | bp_until); | |
186c406b | 11181 | |
883bc8d1 | 11182 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11183 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11184 | } |
c5aa993b | 11185 | |
c70a6932 JK |
11186 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11187 | frame = NULL; | |
11188 | ||
454dafbd | 11189 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11190 | if (anywhere) |
11191 | /* If the user told us to continue until a specified location, | |
11192 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11193 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11194 | null_frame_id, bp_until); | |
883bc8d1 PA |
11195 | else |
11196 | /* Otherwise, specify the selected frame, because we want to stop | |
11197 | only at the very same frame. */ | |
cfc31633 PA |
11198 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11199 | stack_frame_id, bp_until); | |
883bc8d1 | 11200 | |
8980e177 | 11201 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11202 | std::move (location_breakpoint), |
11203 | std::move (caller_breakpoint)); | |
cfc31633 | 11204 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11205 | |
cfc31633 | 11206 | discard_cleanups (old_chain); |
f107f563 | 11207 | |
cfc31633 | 11208 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11209 | } |
ae66c1fc | 11210 | |
c906108c SS |
11211 | /* This function attempts to parse an optional "if <cond>" clause |
11212 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11213 | |
c906108c SS |
11214 | Else, it returns a pointer to the condition string. (It does not |
11215 | attempt to evaluate the string against a particular block.) And, | |
11216 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11217 | if clause in the arg string. */ |
53a5351d | 11218 | |
63160a43 PA |
11219 | const char * |
11220 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11221 | { |
63160a43 | 11222 | const char *cond_string; |
c5aa993b JM |
11223 | |
11224 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11225 | return NULL; |
c5aa993b | 11226 | |
4a64f543 | 11227 | /* Skip the "if" keyword. */ |
c906108c | 11228 | (*arg) += 2; |
c5aa993b | 11229 | |
c906108c | 11230 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11231 | condition string. */ |
f1735a53 | 11232 | *arg = skip_spaces (*arg); |
c906108c | 11233 | cond_string = *arg; |
c5aa993b | 11234 | |
4a64f543 MS |
11235 | /* Assume that the condition occupies the remainder of the arg |
11236 | string. */ | |
c906108c | 11237 | (*arg) += strlen (cond_string); |
c5aa993b | 11238 | |
c906108c SS |
11239 | return cond_string; |
11240 | } | |
c5aa993b | 11241 | |
c906108c SS |
11242 | /* Commands to deal with catching events, such as signals, exceptions, |
11243 | process start/exit, etc. */ | |
c5aa993b JM |
11244 | |
11245 | typedef enum | |
11246 | { | |
44feb3ce TT |
11247 | catch_fork_temporary, catch_vfork_temporary, |
11248 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11249 | } |
11250 | catch_fork_kind; | |
11251 | ||
c906108c | 11252 | static void |
eb4c3f4a | 11253 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11254 | struct cmd_list_element *command) |
c906108c | 11255 | { |
a6d9a66e | 11256 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11257 | const char *cond_string = NULL; |
44feb3ce TT |
11258 | catch_fork_kind fork_kind; |
11259 | int tempflag; | |
11260 | ||
11261 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11262 | tempflag = (fork_kind == catch_fork_temporary | |
11263 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11264 | |
44feb3ce TT |
11265 | if (!arg) |
11266 | arg = ""; | |
f1735a53 | 11267 | arg = skip_spaces (arg); |
c5aa993b | 11268 | |
c906108c | 11269 | /* The allowed syntax is: |
c5aa993b JM |
11270 | catch [v]fork |
11271 | catch [v]fork if <cond> | |
11272 | ||
4a64f543 | 11273 | First, check if there's an if clause. */ |
c906108c | 11274 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11275 | |
c906108c | 11276 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11277 | error (_("Junk at end of arguments.")); |
c5aa993b | 11278 | |
c906108c | 11279 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11280 | and enable reporting of such events. */ |
c5aa993b JM |
11281 | switch (fork_kind) |
11282 | { | |
44feb3ce TT |
11283 | case catch_fork_temporary: |
11284 | case catch_fork_permanent: | |
a6d9a66e | 11285 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11286 | &catch_fork_breakpoint_ops); |
c906108c | 11287 | break; |
44feb3ce TT |
11288 | case catch_vfork_temporary: |
11289 | case catch_vfork_permanent: | |
a6d9a66e | 11290 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11291 | &catch_vfork_breakpoint_ops); |
c906108c | 11292 | break; |
c5aa993b | 11293 | default: |
8a3fe4f8 | 11294 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11295 | break; |
c5aa993b | 11296 | } |
c906108c SS |
11297 | } |
11298 | ||
11299 | static void | |
eb4c3f4a | 11300 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11301 | struct cmd_list_element *command) |
c906108c | 11302 | { |
a6d9a66e | 11303 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11304 | int tempflag; |
63160a43 | 11305 | const char *cond_string = NULL; |
c906108c | 11306 | |
44feb3ce TT |
11307 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11308 | ||
11309 | if (!arg) | |
11310 | arg = ""; | |
f1735a53 | 11311 | arg = skip_spaces (arg); |
c906108c SS |
11312 | |
11313 | /* The allowed syntax is: | |
c5aa993b JM |
11314 | catch exec |
11315 | catch exec if <cond> | |
c906108c | 11316 | |
4a64f543 | 11317 | First, check if there's an if clause. */ |
c906108c SS |
11318 | cond_string = ep_parse_optional_if_clause (&arg); |
11319 | ||
11320 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11321 | error (_("Junk at end of arguments.")); |
c906108c | 11322 | |
b270e6f9 TT |
11323 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11324 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11325 | &catch_exec_breakpoint_ops); |
11326 | c->exec_pathname = NULL; | |
11327 | ||
b270e6f9 | 11328 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11329 | } |
c5aa993b | 11330 | |
9ac4176b | 11331 | void |
28010a5d PA |
11332 | init_ada_exception_breakpoint (struct breakpoint *b, |
11333 | struct gdbarch *gdbarch, | |
11334 | struct symtab_and_line sal, | |
f2fc3015 | 11335 | const char *addr_string, |
c0a91b2b | 11336 | const struct breakpoint_ops *ops, |
28010a5d | 11337 | int tempflag, |
349774ef | 11338 | int enabled, |
28010a5d | 11339 | int from_tty) |
f7f9143b | 11340 | { |
f7f9143b JB |
11341 | if (from_tty) |
11342 | { | |
5af949e3 UW |
11343 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11344 | if (!loc_gdbarch) | |
11345 | loc_gdbarch = gdbarch; | |
11346 | ||
6c95b8df PA |
11347 | describe_other_breakpoints (loc_gdbarch, |
11348 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11349 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11350 | version for exception catchpoints, because two catchpoints | |
11351 | used for different exception names will use the same address. | |
11352 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11353 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11354 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11355 | the user what type of catchpoint it is. The above is good |
11356 | enough for now, though. */ | |
11357 | } | |
11358 | ||
28010a5d | 11359 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11360 | |
349774ef | 11361 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11362 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11363 | b->location = string_to_event_location (&addr_string, |
11364 | language_def (language_ada)); | |
f7f9143b | 11365 | b->language = language_ada; |
f7f9143b JB |
11366 | } |
11367 | ||
c906108c | 11368 | static void |
981a3fb3 | 11369 | catch_command (const char *arg, int from_tty) |
c906108c | 11370 | { |
44feb3ce | 11371 | error (_("Catch requires an event name.")); |
c906108c SS |
11372 | } |
11373 | \f | |
11374 | ||
11375 | static void | |
981a3fb3 | 11376 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11377 | { |
44feb3ce | 11378 | error (_("Catch requires an event name.")); |
c906108c SS |
11379 | } |
11380 | ||
81b1e71c | 11381 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11382 | |
11383 | static int | |
81b1e71c | 11384 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11385 | { |
81b1e71c TT |
11386 | uintptr_t ua = (uintptr_t) a; |
11387 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11388 | |
81b1e71c | 11389 | if (a->number < b->number) |
8a2c437b | 11390 | return -1; |
81b1e71c | 11391 | else if (a->number > b->number) |
8a2c437b TT |
11392 | return 1; |
11393 | ||
11394 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11395 | the number 0. */ | |
11396 | if (ua < ub) | |
11397 | return -1; | |
94b0e70d | 11398 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11399 | } |
11400 | ||
80f8a6eb | 11401 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11402 | |
11403 | static void | |
0b39b52e | 11404 | clear_command (const char *arg, int from_tty) |
c906108c | 11405 | { |
81b1e71c | 11406 | struct breakpoint *b; |
c906108c | 11407 | int default_match; |
c906108c | 11408 | |
6c5b2ebe PA |
11409 | std::vector<symtab_and_line> decoded_sals; |
11410 | symtab_and_line last_sal; | |
11411 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11412 | if (arg) |
11413 | { | |
6c5b2ebe PA |
11414 | decoded_sals |
11415 | = decode_line_with_current_source (arg, | |
11416 | (DECODE_LINE_FUNFIRSTLINE | |
11417 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11418 | default_match = 0; |
6c5b2ebe | 11419 | sals = decoded_sals; |
c906108c SS |
11420 | } |
11421 | else | |
11422 | { | |
1bfeeb0f JL |
11423 | /* Set sal's line, symtab, pc, and pspace to the values |
11424 | corresponding to the last call to print_frame_info. If the | |
11425 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11426 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11427 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11428 | error (_("No source file specified.")); |
c906108c | 11429 | |
c906108c | 11430 | default_match = 1; |
6c5b2ebe | 11431 | sals = last_sal; |
c906108c SS |
11432 | } |
11433 | ||
4a64f543 MS |
11434 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11435 | seems, because all existing breakpoints typically have both | |
11436 | file/line and pc set. So, if clear is given file/line, we can | |
11437 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11438 | |
11439 | We only support clearing given the address explicitly | |
11440 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11441 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11442 | due to optimization, all in one block. |
4a64f543 MS |
11443 | |
11444 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11445 | PC corresponding to the same file:line, the breakpoint won't |
11446 | be cleared. We probably can still clear the breakpoint, but | |
11447 | since the other PC value is never presented to user, user | |
11448 | can only find it by guessing, and it does not seem important | |
11449 | to support that. */ | |
11450 | ||
4a64f543 MS |
11451 | /* For each line spec given, delete bps which correspond to it. Do |
11452 | it in two passes, solely to preserve the current behavior that | |
11453 | from_tty is forced true if we delete more than one | |
11454 | breakpoint. */ | |
c906108c | 11455 | |
81b1e71c | 11456 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11457 | for (const auto &sal : sals) |
c906108c | 11458 | { |
05cba821 JK |
11459 | const char *sal_fullname; |
11460 | ||
c906108c | 11461 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11462 | If line given (pc == 0), clear all bpts on specified line. |
11463 | If defaulting, clear all bpts on default line | |
c906108c | 11464 | or at default pc. |
c5aa993b JM |
11465 | |
11466 | defaulting sal.pc != 0 tests to do | |
11467 | ||
11468 | 0 1 pc | |
11469 | 1 1 pc _and_ line | |
11470 | 0 0 line | |
11471 | 1 0 <can't happen> */ | |
c906108c | 11472 | |
05cba821 JK |
11473 | sal_fullname = (sal.symtab == NULL |
11474 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11475 | |
4a64f543 | 11476 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11477 | ALL_BREAKPOINTS (b) |
c5aa993b | 11478 | { |
0d381245 | 11479 | int match = 0; |
4a64f543 | 11480 | /* Are we going to delete b? */ |
cc60f2e3 | 11481 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11482 | { |
11483 | struct bp_location *loc = b->loc; | |
11484 | for (; loc; loc = loc->next) | |
11485 | { | |
f8eba3c6 TT |
11486 | /* If the user specified file:line, don't allow a PC |
11487 | match. This matches historical gdb behavior. */ | |
11488 | int pc_match = (!sal.explicit_line | |
11489 | && sal.pc | |
11490 | && (loc->pspace == sal.pspace) | |
11491 | && (loc->address == sal.pc) | |
11492 | && (!section_is_overlay (loc->section) | |
11493 | || loc->section == sal.section)); | |
4aac40c8 TT |
11494 | int line_match = 0; |
11495 | ||
11496 | if ((default_match || sal.explicit_line) | |
2f202fde | 11497 | && loc->symtab != NULL |
05cba821 | 11498 | && sal_fullname != NULL |
4aac40c8 | 11499 | && sal.pspace == loc->pspace |
05cba821 JK |
11500 | && loc->line_number == sal.line |
11501 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11502 | sal_fullname) == 0) | |
11503 | line_match = 1; | |
4aac40c8 | 11504 | |
0d381245 VP |
11505 | if (pc_match || line_match) |
11506 | { | |
11507 | match = 1; | |
11508 | break; | |
11509 | } | |
11510 | } | |
11511 | } | |
11512 | ||
11513 | if (match) | |
81b1e71c | 11514 | found.push_back (b); |
c906108c | 11515 | } |
80f8a6eb | 11516 | } |
8a2c437b | 11517 | |
80f8a6eb | 11518 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11519 | if (found.empty ()) |
80f8a6eb MS |
11520 | { |
11521 | if (arg) | |
8a3fe4f8 | 11522 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11523 | else |
8a3fe4f8 | 11524 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11525 | } |
c906108c | 11526 | |
8a2c437b | 11527 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11528 | std::sort (found.begin (), found.end (), |
11529 | [] (const breakpoint *a, const breakpoint *b) | |
11530 | { | |
11531 | return compare_breakpoints (a, b) < 0; | |
11532 | }); | |
11533 | found.erase (std::unique (found.begin (), found.end (), | |
11534 | [] (const breakpoint *a, const breakpoint *b) | |
11535 | { | |
11536 | return compare_breakpoints (a, b) == 0; | |
11537 | }), | |
11538 | found.end ()); | |
8a2c437b | 11539 | |
81b1e71c | 11540 | if (found.size () > 1) |
4a64f543 | 11541 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11542 | if (from_tty) |
a3f17187 | 11543 | { |
81b1e71c | 11544 | if (found.size () == 1) |
a3f17187 AC |
11545 | printf_unfiltered (_("Deleted breakpoint ")); |
11546 | else | |
11547 | printf_unfiltered (_("Deleted breakpoints ")); | |
11548 | } | |
d6e956e5 | 11549 | |
81b1e71c | 11550 | for (breakpoint *iter : found) |
80f8a6eb | 11551 | { |
c5aa993b | 11552 | if (from_tty) |
81b1e71c TT |
11553 | printf_unfiltered ("%d ", iter->number); |
11554 | delete_breakpoint (iter); | |
c906108c | 11555 | } |
80f8a6eb MS |
11556 | if (from_tty) |
11557 | putchar_unfiltered ('\n'); | |
c906108c SS |
11558 | } |
11559 | \f | |
11560 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11561 | all breakpoints that are marked for deletion, whether hit or not. | |
11562 | This is called after any breakpoint is hit, or after errors. */ | |
11563 | ||
11564 | void | |
fba45db2 | 11565 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11566 | { |
35df4500 | 11567 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11568 | |
11569 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11570 | if (bs->breakpoint_at |
11571 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11572 | && bs->stop) |
f431efe5 | 11573 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11574 | |
35df4500 | 11575 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11576 | { |
b5de0fa7 | 11577 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11578 | delete_breakpoint (b); |
11579 | } | |
c906108c SS |
11580 | } |
11581 | ||
4a64f543 MS |
11582 | /* A comparison function for bp_location AP and BP being interfaced to |
11583 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11584 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11585 | secondarily by ordering first permanent elements and |
4a64f543 | 11586 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11587 | qsort being an unstable algorithm. */ |
876fa593 JK |
11588 | |
11589 | static int | |
f5336ca5 | 11590 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11591 | { |
9a3c8263 SM |
11592 | const struct bp_location *a = *(const struct bp_location **) ap; |
11593 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11594 | |
11595 | if (a->address != b->address) | |
11596 | return (a->address > b->address) - (a->address < b->address); | |
11597 | ||
dea2aa5f LM |
11598 | /* Sort locations at the same address by their pspace number, keeping |
11599 | locations of the same inferior (in a multi-inferior environment) | |
11600 | grouped. */ | |
11601 | ||
11602 | if (a->pspace->num != b->pspace->num) | |
11603 | return ((a->pspace->num > b->pspace->num) | |
11604 | - (a->pspace->num < b->pspace->num)); | |
11605 | ||
876fa593 | 11606 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11607 | if (a->permanent != b->permanent) |
11608 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11609 | |
c56a97f9 JK |
11610 | /* Make the internal GDB representation stable across GDB runs |
11611 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11612 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11613 | |
11614 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11615 | return ((a->owner->number > b->owner->number) |
11616 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11617 | |
11618 | return (a > b) - (a < b); | |
11619 | } | |
11620 | ||
f5336ca5 PA |
11621 | /* Set bp_locations_placed_address_before_address_max and |
11622 | bp_locations_shadow_len_after_address_max according to the current | |
11623 | content of the bp_locations array. */ | |
f7545552 TT |
11624 | |
11625 | static void | |
f5336ca5 | 11626 | bp_locations_target_extensions_update (void) |
f7545552 | 11627 | { |
876fa593 JK |
11628 | struct bp_location *bl, **blp_tmp; |
11629 | ||
f5336ca5 PA |
11630 | bp_locations_placed_address_before_address_max = 0; |
11631 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11632 | |
11633 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11634 | { | |
11635 | CORE_ADDR start, end, addr; | |
11636 | ||
11637 | if (!bp_location_has_shadow (bl)) | |
11638 | continue; | |
11639 | ||
11640 | start = bl->target_info.placed_address; | |
11641 | end = start + bl->target_info.shadow_len; | |
11642 | ||
11643 | gdb_assert (bl->address >= start); | |
11644 | addr = bl->address - start; | |
f5336ca5 PA |
11645 | if (addr > bp_locations_placed_address_before_address_max) |
11646 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11647 | |
11648 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11649 | ||
11650 | gdb_assert (bl->address < end); | |
11651 | addr = end - bl->address; | |
f5336ca5 PA |
11652 | if (addr > bp_locations_shadow_len_after_address_max) |
11653 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11654 | } |
f7545552 TT |
11655 | } |
11656 | ||
1e4d1764 YQ |
11657 | /* Download tracepoint locations if they haven't been. */ |
11658 | ||
11659 | static void | |
11660 | download_tracepoint_locations (void) | |
11661 | { | |
7ed2c994 | 11662 | struct breakpoint *b; |
dd2e65cc | 11663 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11664 | |
5ed8105e | 11665 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11666 | |
7ed2c994 | 11667 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11668 | { |
7ed2c994 | 11669 | struct bp_location *bl; |
1e4d1764 | 11670 | struct tracepoint *t; |
f2a8bc8a | 11671 | int bp_location_downloaded = 0; |
1e4d1764 | 11672 | |
7ed2c994 | 11673 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11674 | ? !may_insert_fast_tracepoints |
11675 | : !may_insert_tracepoints)) | |
11676 | continue; | |
11677 | ||
dd2e65cc YQ |
11678 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11679 | { | |
11680 | if (target_can_download_tracepoint ()) | |
11681 | can_download_tracepoint = TRIBOOL_TRUE; | |
11682 | else | |
11683 | can_download_tracepoint = TRIBOOL_FALSE; | |
11684 | } | |
11685 | ||
11686 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11687 | break; | |
11688 | ||
7ed2c994 YQ |
11689 | for (bl = b->loc; bl; bl = bl->next) |
11690 | { | |
11691 | /* In tracepoint, locations are _never_ duplicated, so | |
11692 | should_be_inserted is equivalent to | |
11693 | unduplicated_should_be_inserted. */ | |
11694 | if (!should_be_inserted (bl) || bl->inserted) | |
11695 | continue; | |
1e4d1764 | 11696 | |
7ed2c994 | 11697 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11698 | |
7ed2c994 | 11699 | target_download_tracepoint (bl); |
1e4d1764 | 11700 | |
7ed2c994 | 11701 | bl->inserted = 1; |
f2a8bc8a | 11702 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11703 | } |
11704 | t = (struct tracepoint *) b; | |
11705 | t->number_on_target = b->number; | |
f2a8bc8a | 11706 | if (bp_location_downloaded) |
76727919 | 11707 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11708 | } |
1e4d1764 YQ |
11709 | } |
11710 | ||
934709f0 PW |
11711 | /* Swap the insertion/duplication state between two locations. */ |
11712 | ||
11713 | static void | |
11714 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11715 | { | |
11716 | const int left_inserted = left->inserted; | |
11717 | const int left_duplicate = left->duplicate; | |
b775012e | 11718 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11719 | const struct bp_target_info left_target_info = left->target_info; |
11720 | ||
1e4d1764 YQ |
11721 | /* Locations of tracepoints can never be duplicated. */ |
11722 | if (is_tracepoint (left->owner)) | |
11723 | gdb_assert (!left->duplicate); | |
11724 | if (is_tracepoint (right->owner)) | |
11725 | gdb_assert (!right->duplicate); | |
11726 | ||
934709f0 PW |
11727 | left->inserted = right->inserted; |
11728 | left->duplicate = right->duplicate; | |
b775012e | 11729 | left->needs_update = right->needs_update; |
934709f0 PW |
11730 | left->target_info = right->target_info; |
11731 | right->inserted = left_inserted; | |
11732 | right->duplicate = left_duplicate; | |
b775012e | 11733 | right->needs_update = left_needs_update; |
934709f0 PW |
11734 | right->target_info = left_target_info; |
11735 | } | |
11736 | ||
b775012e LM |
11737 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11738 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11739 | conditions on the target's side. Such conditions need to be updated on | |
11740 | the target. */ | |
11741 | ||
11742 | static void | |
11743 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11744 | { | |
11745 | struct bp_location **locp = NULL, **loc2p; | |
11746 | struct bp_location *loc; | |
11747 | CORE_ADDR address = 0; | |
11748 | int pspace_num; | |
11749 | ||
11750 | address = bl->address; | |
11751 | pspace_num = bl->pspace->num; | |
11752 | ||
11753 | /* This is only meaningful if the target is | |
11754 | evaluating conditions and if the user has | |
11755 | opted for condition evaluation on the target's | |
11756 | side. */ | |
11757 | if (gdb_evaluates_breakpoint_condition_p () | |
11758 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11759 | return; | |
11760 | ||
11761 | /* Flag all breakpoint locations with this address and | |
11762 | the same program space as the location | |
11763 | as "its condition has changed". We need to | |
11764 | update the conditions on the target's side. */ | |
11765 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11766 | { | |
11767 | loc = *loc2p; | |
11768 | ||
11769 | if (!is_breakpoint (loc->owner) | |
11770 | || pspace_num != loc->pspace->num) | |
11771 | continue; | |
11772 | ||
11773 | /* Flag the location appropriately. We use a different state to | |
11774 | let everyone know that we already updated the set of locations | |
11775 | with addr bl->address and program space bl->pspace. This is so | |
11776 | we don't have to keep calling these functions just to mark locations | |
11777 | that have already been marked. */ | |
11778 | loc->condition_changed = condition_updated; | |
11779 | ||
11780 | /* Free the agent expression bytecode as well. We will compute | |
11781 | it later on. */ | |
833177a4 | 11782 | loc->cond_bytecode.reset (); |
b775012e LM |
11783 | } |
11784 | } | |
44702360 PA |
11785 | /* Called whether new breakpoints are created, or existing breakpoints |
11786 | deleted, to update the global location list and recompute which | |
11787 | locations are duplicate of which. | |
b775012e | 11788 | |
04086b45 PA |
11789 | The INSERT_MODE flag determines whether locations may not, may, or |
11790 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11791 | info. */ | |
b60e7edf | 11792 | |
0d381245 | 11793 | static void |
44702360 | 11794 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11795 | { |
74960c60 | 11796 | struct breakpoint *b; |
876fa593 | 11797 | struct bp_location **locp, *loc; |
b775012e LM |
11798 | /* Last breakpoint location address that was marked for update. */ |
11799 | CORE_ADDR last_addr = 0; | |
11800 | /* Last breakpoint location program space that was marked for update. */ | |
11801 | int last_pspace_num = -1; | |
f7545552 | 11802 | |
2d134ed3 PA |
11803 | /* Used in the duplicates detection below. When iterating over all |
11804 | bp_locations, points to the first bp_location of a given address. | |
11805 | Breakpoints and watchpoints of different types are never | |
11806 | duplicates of each other. Keep one pointer for each type of | |
11807 | breakpoint/watchpoint, so we only need to loop over all locations | |
11808 | once. */ | |
11809 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11810 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11811 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11812 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11813 | |
f5336ca5 PA |
11814 | /* Saved former bp_locations array which we compare against the newly |
11815 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11816 | struct bp_location **old_locp; |
f5336ca5 | 11817 | unsigned old_locations_count; |
81b1e71c | 11818 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11819 | |
f5336ca5 PA |
11820 | old_locations_count = bp_locations_count; |
11821 | bp_locations = NULL; | |
11822 | bp_locations_count = 0; | |
0d381245 | 11823 | |
74960c60 | 11824 | ALL_BREAKPOINTS (b) |
876fa593 | 11825 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11826 | bp_locations_count++; |
876fa593 | 11827 | |
f5336ca5 PA |
11828 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11829 | locp = bp_locations; | |
876fa593 JK |
11830 | ALL_BREAKPOINTS (b) |
11831 | for (loc = b->loc; loc; loc = loc->next) | |
11832 | *locp++ = loc; | |
f5336ca5 PA |
11833 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11834 | bp_locations_compare); | |
876fa593 | 11835 | |
f5336ca5 | 11836 | bp_locations_target_extensions_update (); |
74960c60 | 11837 | |
4a64f543 MS |
11838 | /* Identify bp_location instances that are no longer present in the |
11839 | new list, and therefore should be freed. Note that it's not | |
11840 | necessary that those locations should be removed from inferior -- | |
11841 | if there's another location at the same address (previously | |
11842 | marked as duplicate), we don't need to remove/insert the | |
11843 | location. | |
876fa593 | 11844 | |
4a64f543 MS |
11845 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11846 | and former bp_location array state respectively. */ | |
876fa593 | 11847 | |
f5336ca5 | 11848 | locp = bp_locations; |
81b1e71c TT |
11849 | for (old_locp = old_locations.get (); |
11850 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11851 | old_locp++) |
74960c60 | 11852 | { |
876fa593 | 11853 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11854 | struct bp_location **loc2p; |
876fa593 | 11855 | |
e5dd4106 | 11856 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11857 | not, we have to free it. */ |
c7d46a38 | 11858 | int found_object = 0; |
20874c92 VP |
11859 | /* Tells if the location should remain inserted in the target. */ |
11860 | int keep_in_target = 0; | |
11861 | int removed = 0; | |
876fa593 | 11862 | |
4a64f543 MS |
11863 | /* Skip LOCP entries which will definitely never be needed. |
11864 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11865 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11866 | && (*locp)->address < old_loc->address) |
876fa593 | 11867 | locp++; |
c7d46a38 PA |
11868 | |
11869 | for (loc2p = locp; | |
f5336ca5 | 11870 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11871 | && (*loc2p)->address == old_loc->address); |
11872 | loc2p++) | |
11873 | { | |
b775012e LM |
11874 | /* Check if this is a new/duplicated location or a duplicated |
11875 | location that had its condition modified. If so, we want to send | |
11876 | its condition to the target if evaluation of conditions is taking | |
11877 | place there. */ | |
11878 | if ((*loc2p)->condition_changed == condition_modified | |
11879 | && (last_addr != old_loc->address | |
11880 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11881 | { |
b775012e LM |
11882 | force_breakpoint_reinsertion (*loc2p); |
11883 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11884 | } |
b775012e LM |
11885 | |
11886 | if (*loc2p == old_loc) | |
11887 | found_object = 1; | |
c7d46a38 | 11888 | } |
74960c60 | 11889 | |
b775012e LM |
11890 | /* We have already handled this address, update it so that we don't |
11891 | have to go through updates again. */ | |
11892 | last_addr = old_loc->address; | |
11893 | ||
11894 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11895 | if (!found_object) | |
11896 | force_breakpoint_reinsertion (old_loc); | |
11897 | ||
4a64f543 MS |
11898 | /* If this location is no longer present, and inserted, look if |
11899 | there's maybe a new location at the same address. If so, | |
11900 | mark that one inserted, and don't remove this one. This is | |
11901 | needed so that we don't have a time window where a breakpoint | |
11902 | at certain location is not inserted. */ | |
74960c60 | 11903 | |
876fa593 | 11904 | if (old_loc->inserted) |
0d381245 | 11905 | { |
4a64f543 MS |
11906 | /* If the location is inserted now, we might have to remove |
11907 | it. */ | |
74960c60 | 11908 | |
876fa593 | 11909 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11910 | { |
4a64f543 MS |
11911 | /* The location is still present in the location list, |
11912 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11913 | keep_in_target = 1; |
74960c60 VP |
11914 | } |
11915 | else | |
11916 | { | |
b775012e LM |
11917 | /* This location still exists, but it won't be kept in the |
11918 | target since it may have been disabled. We proceed to | |
11919 | remove its target-side condition. */ | |
11920 | ||
4a64f543 MS |
11921 | /* The location is either no longer present, or got |
11922 | disabled. See if there's another location at the | |
11923 | same address, in which case we don't need to remove | |
11924 | this one from the target. */ | |
876fa593 | 11925 | |
2bdf28a0 | 11926 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11927 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11928 | { | |
876fa593 | 11929 | for (loc2p = locp; |
f5336ca5 | 11930 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11931 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11932 | loc2p++) |
11933 | { | |
11934 | struct bp_location *loc2 = *loc2p; | |
11935 | ||
2d134ed3 | 11936 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11937 | { |
85d721b8 PA |
11938 | /* Read watchpoint locations are switched to |
11939 | access watchpoints, if the former are not | |
11940 | supported, but the latter are. */ | |
11941 | if (is_hardware_watchpoint (old_loc->owner)) | |
11942 | { | |
11943 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11944 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11945 | } | |
11946 | ||
934709f0 PW |
11947 | /* loc2 is a duplicated location. We need to check |
11948 | if it should be inserted in case it will be | |
11949 | unduplicated. */ | |
11950 | if (loc2 != old_loc | |
11951 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11952 | { |
934709f0 | 11953 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11954 | keep_in_target = 1; |
11955 | break; | |
11956 | } | |
876fa593 JK |
11957 | } |
11958 | } | |
11959 | } | |
74960c60 VP |
11960 | } |
11961 | ||
20874c92 VP |
11962 | if (!keep_in_target) |
11963 | { | |
834c0d03 | 11964 | if (remove_breakpoint (old_loc)) |
20874c92 | 11965 | { |
4a64f543 MS |
11966 | /* This is just about all we can do. We could keep |
11967 | this location on the global list, and try to | |
11968 | remove it next time, but there's no particular | |
11969 | reason why we will succeed next time. | |
20874c92 | 11970 | |
4a64f543 MS |
11971 | Note that at this point, old_loc->owner is still |
11972 | valid, as delete_breakpoint frees the breakpoint | |
11973 | only after calling us. */ | |
3e43a32a MS |
11974 | printf_filtered (_("warning: Error removing " |
11975 | "breakpoint %d\n"), | |
876fa593 | 11976 | old_loc->owner->number); |
20874c92 VP |
11977 | } |
11978 | removed = 1; | |
11979 | } | |
0d381245 | 11980 | } |
74960c60 VP |
11981 | |
11982 | if (!found_object) | |
1c5cfe86 | 11983 | { |
fbea99ea | 11984 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11985 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11986 | { |
db82e815 PA |
11987 | /* This location was removed from the target. In |
11988 | non-stop mode, a race condition is possible where | |
11989 | we've removed a breakpoint, but stop events for that | |
11990 | breakpoint are already queued and will arrive later. | |
11991 | We apply an heuristic to be able to distinguish such | |
11992 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11993 | breakpoint location for a bit, and will retire it | |
11994 | after we see some number of events. The theory here | |
11995 | is that reporting of events should, "on the average", | |
11996 | be fair, so after a while we'll see events from all | |
11997 | threads that have anything of interest, and no longer | |
11998 | need to keep this breakpoint location around. We | |
11999 | don't hold locations forever so to reduce chances of | |
12000 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12001 | SIGTRAP. | |
12002 | ||
12003 | The heuristic failing can be disastrous on | |
12004 | decr_pc_after_break targets. | |
12005 | ||
12006 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12007 | if we fail to recognize a late breakpoint SIGTRAP, | |
12008 | because events_till_retirement has reached 0 too | |
12009 | soon, we'll fail to do the PC adjustment, and report | |
12010 | a random SIGTRAP to the user. When the user resumes | |
12011 | the inferior, it will most likely immediately crash | |
2dec564e | 12012 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12013 | corrupted, because of being resumed e.g., in the |
12014 | middle of a multi-byte instruction, or skipped a | |
12015 | one-byte instruction. This was actually seen happen | |
12016 | on native x86-linux, and should be less rare on | |
12017 | targets that do not support new thread events, like | |
12018 | remote, due to the heuristic depending on | |
12019 | thread_count. | |
12020 | ||
12021 | Mistaking a random SIGTRAP for a breakpoint trap | |
12022 | causes similar symptoms (PC adjustment applied when | |
12023 | it shouldn't), but then again, playing with SIGTRAPs | |
12024 | behind the debugger's back is asking for trouble. | |
12025 | ||
12026 | Since hardware watchpoint traps are always | |
12027 | distinguishable from other traps, so we don't need to | |
12028 | apply keep hardware watchpoint moribund locations | |
12029 | around. We simply always ignore hardware watchpoint | |
12030 | traps we can no longer explain. */ | |
12031 | ||
876fa593 JK |
12032 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12033 | old_loc->owner = NULL; | |
20874c92 | 12034 | |
876fa593 | 12035 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12036 | } |
12037 | else | |
f431efe5 PA |
12038 | { |
12039 | old_loc->owner = NULL; | |
12040 | decref_bp_location (&old_loc); | |
12041 | } | |
20874c92 | 12042 | } |
74960c60 | 12043 | } |
1c5cfe86 | 12044 | |
348d480f PA |
12045 | /* Rescan breakpoints at the same address and section, marking the |
12046 | first one as "first" and any others as "duplicates". This is so | |
12047 | that the bpt instruction is only inserted once. If we have a | |
12048 | permanent breakpoint at the same place as BPT, make that one the | |
12049 | official one, and the rest as duplicates. Permanent breakpoints | |
12050 | are sorted first for the same address. | |
12051 | ||
12052 | Do the same for hardware watchpoints, but also considering the | |
12053 | watchpoint's type (regular/access/read) and length. */ | |
12054 | ||
12055 | bp_loc_first = NULL; | |
12056 | wp_loc_first = NULL; | |
12057 | awp_loc_first = NULL; | |
12058 | rwp_loc_first = NULL; | |
12059 | ALL_BP_LOCATIONS (loc, locp) | |
12060 | { | |
12061 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12062 | non-NULL. */ | |
348d480f | 12063 | struct bp_location **loc_first_p; |
d3fbdd86 | 12064 | b = loc->owner; |
348d480f | 12065 | |
6f380991 | 12066 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12067 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12068 | /* Don't detect duplicate for tracepoint locations because they are |
12069 | never duplicated. See the comments in field `duplicate' of | |
12070 | `struct bp_location'. */ | |
348d480f | 12071 | || is_tracepoint (b)) |
b775012e LM |
12072 | { |
12073 | /* Clear the condition modification flag. */ | |
12074 | loc->condition_changed = condition_unchanged; | |
12075 | continue; | |
12076 | } | |
348d480f | 12077 | |
348d480f PA |
12078 | if (b->type == bp_hardware_watchpoint) |
12079 | loc_first_p = &wp_loc_first; | |
12080 | else if (b->type == bp_read_watchpoint) | |
12081 | loc_first_p = &rwp_loc_first; | |
12082 | else if (b->type == bp_access_watchpoint) | |
12083 | loc_first_p = &awp_loc_first; | |
12084 | else | |
12085 | loc_first_p = &bp_loc_first; | |
12086 | ||
12087 | if (*loc_first_p == NULL | |
12088 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12089 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12090 | { | |
12091 | *loc_first_p = loc; | |
12092 | loc->duplicate = 0; | |
b775012e LM |
12093 | |
12094 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12095 | { | |
12096 | loc->needs_update = 1; | |
12097 | /* Clear the condition modification flag. */ | |
12098 | loc->condition_changed = condition_unchanged; | |
12099 | } | |
348d480f PA |
12100 | continue; |
12101 | } | |
12102 | ||
934709f0 PW |
12103 | |
12104 | /* This and the above ensure the invariant that the first location | |
12105 | is not duplicated, and is the inserted one. | |
12106 | All following are marked as duplicated, and are not inserted. */ | |
12107 | if (loc->inserted) | |
12108 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12109 | loc->duplicate = 1; |
12110 | ||
b775012e LM |
12111 | /* Clear the condition modification flag. */ |
12112 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12113 | } |
12114 | ||
a25a5a45 | 12115 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12116 | { |
04086b45 | 12117 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12118 | insert_breakpoint_locations (); |
12119 | else | |
12120 | { | |
44702360 PA |
12121 | /* Even though the caller told us to not insert new |
12122 | locations, we may still need to update conditions on the | |
12123 | target's side of breakpoints that were already inserted | |
12124 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12125 | only update conditions for locations that are marked |
12126 | "needs_update". */ | |
12127 | update_inserted_breakpoint_locations (); | |
12128 | } | |
12129 | } | |
348d480f | 12130 | |
04086b45 | 12131 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12132 | download_tracepoint_locations (); |
348d480f PA |
12133 | } |
12134 | ||
12135 | void | |
12136 | breakpoint_retire_moribund (void) | |
12137 | { | |
12138 | struct bp_location *loc; | |
12139 | int ix; | |
12140 | ||
12141 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12142 | if (--(loc->events_till_retirement) == 0) | |
12143 | { | |
12144 | decref_bp_location (&loc); | |
12145 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12146 | --ix; | |
12147 | } | |
12148 | } | |
12149 | ||
12150 | static void | |
44702360 | 12151 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12152 | { |
348d480f | 12153 | |
492d29ea PA |
12154 | TRY |
12155 | { | |
12156 | update_global_location_list (insert_mode); | |
12157 | } | |
12158 | CATCH (e, RETURN_MASK_ERROR) | |
12159 | { | |
12160 | } | |
12161 | END_CATCH | |
348d480f PA |
12162 | } |
12163 | ||
12164 | /* Clear BKP from a BPS. */ | |
12165 | ||
12166 | static void | |
12167 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12168 | { | |
12169 | bpstat bs; | |
12170 | ||
12171 | for (bs = bps; bs; bs = bs->next) | |
12172 | if (bs->breakpoint_at == bpt) | |
12173 | { | |
12174 | bs->breakpoint_at = NULL; | |
12175 | bs->old_val = NULL; | |
12176 | /* bs->commands will be freed later. */ | |
12177 | } | |
12178 | } | |
12179 | ||
12180 | /* Callback for iterate_over_threads. */ | |
12181 | static int | |
12182 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12183 | { | |
9a3c8263 | 12184 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12185 | |
12186 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12187 | return 0; | |
12188 | } | |
12189 | ||
12190 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12191 | callbacks. */ | |
12192 | ||
12193 | static void | |
12194 | say_where (struct breakpoint *b) | |
12195 | { | |
12196 | struct value_print_options opts; | |
12197 | ||
12198 | get_user_print_options (&opts); | |
12199 | ||
12200 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12201 | single string. */ | |
12202 | if (b->loc == NULL) | |
12203 | { | |
f00aae0f KS |
12204 | /* For pending locations, the output differs slightly based |
12205 | on b->extra_string. If this is non-NULL, it contains either | |
12206 | a condition or dprintf arguments. */ | |
12207 | if (b->extra_string == NULL) | |
12208 | { | |
12209 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12210 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12211 | } |
12212 | else if (b->type == bp_dprintf) | |
12213 | { | |
12214 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12215 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12216 | b->extra_string); |
12217 | } | |
12218 | else | |
12219 | { | |
12220 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12221 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12222 | b->extra_string); |
12223 | } | |
348d480f PA |
12224 | } |
12225 | else | |
12226 | { | |
2f202fde | 12227 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12228 | { |
12229 | printf_filtered (" at "); | |
12230 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12231 | gdb_stdout); | |
12232 | } | |
2f202fde | 12233 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12234 | { |
12235 | /* If there is a single location, we can print the location | |
12236 | more nicely. */ | |
12237 | if (b->loc->next == NULL) | |
12238 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12239 | symtab_to_filename_for_display (b->loc->symtab), |
12240 | b->loc->line_number); | |
f8eba3c6 TT |
12241 | else |
12242 | /* This is not ideal, but each location may have a | |
12243 | different file name, and this at least reflects the | |
12244 | real situation somewhat. */ | |
f00aae0f | 12245 | printf_filtered (": %s.", |
d28cd78a | 12246 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12247 | } |
348d480f PA |
12248 | |
12249 | if (b->loc->next) | |
12250 | { | |
12251 | struct bp_location *loc = b->loc; | |
12252 | int n = 0; | |
12253 | for (; loc; loc = loc->next) | |
12254 | ++n; | |
12255 | printf_filtered (" (%d locations)", n); | |
12256 | } | |
12257 | } | |
12258 | } | |
12259 | ||
348d480f PA |
12260 | /* Default bp_location_ops methods. */ |
12261 | ||
12262 | static void | |
12263 | bp_location_dtor (struct bp_location *self) | |
12264 | { | |
348d480f PA |
12265 | xfree (self->function_name); |
12266 | } | |
12267 | ||
12268 | static const struct bp_location_ops bp_location_ops = | |
12269 | { | |
12270 | bp_location_dtor | |
12271 | }; | |
12272 | ||
c1fc2657 | 12273 | /* Destructor for the breakpoint base class. */ |
348d480f | 12274 | |
c1fc2657 | 12275 | breakpoint::~breakpoint () |
348d480f | 12276 | { |
c1fc2657 SM |
12277 | xfree (this->cond_string); |
12278 | xfree (this->extra_string); | |
12279 | xfree (this->filter); | |
348d480f PA |
12280 | } |
12281 | ||
2060206e PA |
12282 | static struct bp_location * |
12283 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12284 | { |
5625a286 | 12285 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12286 | } |
12287 | ||
2060206e PA |
12288 | static void |
12289 | base_breakpoint_re_set (struct breakpoint *b) | |
12290 | { | |
12291 | /* Nothing to re-set. */ | |
12292 | } | |
12293 | ||
12294 | #define internal_error_pure_virtual_called() \ | |
12295 | gdb_assert_not_reached ("pure virtual function called") | |
12296 | ||
12297 | static int | |
12298 | base_breakpoint_insert_location (struct bp_location *bl) | |
12299 | { | |
12300 | internal_error_pure_virtual_called (); | |
12301 | } | |
12302 | ||
12303 | static int | |
73971819 PA |
12304 | base_breakpoint_remove_location (struct bp_location *bl, |
12305 | enum remove_bp_reason reason) | |
2060206e PA |
12306 | { |
12307 | internal_error_pure_virtual_called (); | |
12308 | } | |
12309 | ||
12310 | static int | |
12311 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12312 | const address_space *aspace, |
09ac7c10 TT |
12313 | CORE_ADDR bp_addr, |
12314 | const struct target_waitstatus *ws) | |
2060206e PA |
12315 | { |
12316 | internal_error_pure_virtual_called (); | |
12317 | } | |
12318 | ||
12319 | static void | |
12320 | base_breakpoint_check_status (bpstat bs) | |
12321 | { | |
12322 | /* Always stop. */ | |
12323 | } | |
12324 | ||
12325 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12326 | errors. */ | |
12327 | ||
12328 | static int | |
12329 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12330 | { | |
12331 | internal_error_pure_virtual_called (); | |
12332 | } | |
12333 | ||
12334 | /* A "resources_needed" breakpoint_ops method that just internal | |
12335 | errors. */ | |
12336 | ||
12337 | static int | |
12338 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12339 | { | |
12340 | internal_error_pure_virtual_called (); | |
12341 | } | |
12342 | ||
12343 | static enum print_stop_action | |
12344 | base_breakpoint_print_it (bpstat bs) | |
12345 | { | |
12346 | internal_error_pure_virtual_called (); | |
12347 | } | |
12348 | ||
12349 | static void | |
12350 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12351 | struct ui_out *uiout) | |
12352 | { | |
12353 | /* nothing */ | |
12354 | } | |
12355 | ||
12356 | static void | |
12357 | base_breakpoint_print_mention (struct breakpoint *b) | |
12358 | { | |
12359 | internal_error_pure_virtual_called (); | |
12360 | } | |
12361 | ||
12362 | static void | |
12363 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12364 | { | |
12365 | internal_error_pure_virtual_called (); | |
12366 | } | |
12367 | ||
983af33b | 12368 | static void |
f00aae0f KS |
12369 | base_breakpoint_create_sals_from_location |
12370 | (const struct event_location *location, | |
12371 | struct linespec_result *canonical, | |
12372 | enum bptype type_wanted) | |
983af33b SDJ |
12373 | { |
12374 | internal_error_pure_virtual_called (); | |
12375 | } | |
12376 | ||
12377 | static void | |
12378 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12379 | struct linespec_result *c, | |
e1e01040 PA |
12380 | gdb::unique_xmalloc_ptr<char> cond_string, |
12381 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12382 | enum bptype type_wanted, |
12383 | enum bpdisp disposition, | |
12384 | int thread, | |
12385 | int task, int ignore_count, | |
12386 | const struct breakpoint_ops *o, | |
12387 | int from_tty, int enabled, | |
44f238bb | 12388 | int internal, unsigned flags) |
983af33b SDJ |
12389 | { |
12390 | internal_error_pure_virtual_called (); | |
12391 | } | |
12392 | ||
6c5b2ebe | 12393 | static std::vector<symtab_and_line> |
f00aae0f KS |
12394 | base_breakpoint_decode_location (struct breakpoint *b, |
12395 | const struct event_location *location, | |
6c5b2ebe | 12396 | struct program_space *search_pspace) |
983af33b SDJ |
12397 | { |
12398 | internal_error_pure_virtual_called (); | |
12399 | } | |
12400 | ||
ab04a2af TT |
12401 | /* The default 'explains_signal' method. */ |
12402 | ||
47591c29 | 12403 | static int |
427cd150 | 12404 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12405 | { |
47591c29 | 12406 | return 1; |
ab04a2af TT |
12407 | } |
12408 | ||
9d6e6e84 HZ |
12409 | /* The default "after_condition_true" method. */ |
12410 | ||
12411 | static void | |
12412 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12413 | { | |
12414 | /* Nothing to do. */ | |
12415 | } | |
12416 | ||
ab04a2af | 12417 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12418 | { |
2060206e PA |
12419 | base_breakpoint_allocate_location, |
12420 | base_breakpoint_re_set, | |
12421 | base_breakpoint_insert_location, | |
12422 | base_breakpoint_remove_location, | |
12423 | base_breakpoint_breakpoint_hit, | |
12424 | base_breakpoint_check_status, | |
12425 | base_breakpoint_resources_needed, | |
12426 | base_breakpoint_works_in_software_mode, | |
12427 | base_breakpoint_print_it, | |
12428 | NULL, | |
12429 | base_breakpoint_print_one_detail, | |
12430 | base_breakpoint_print_mention, | |
983af33b | 12431 | base_breakpoint_print_recreate, |
5f700d83 | 12432 | base_breakpoint_create_sals_from_location, |
983af33b | 12433 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12434 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12435 | base_breakpoint_explains_signal, |
12436 | base_breakpoint_after_condition_true, | |
2060206e PA |
12437 | }; |
12438 | ||
12439 | /* Default breakpoint_ops methods. */ | |
12440 | ||
12441 | static void | |
348d480f PA |
12442 | bkpt_re_set (struct breakpoint *b) |
12443 | { | |
06edf0c0 | 12444 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12445 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12446 | { |
f00aae0f | 12447 | /* Anything without a location can't be re-set. */ |
348d480f | 12448 | delete_breakpoint (b); |
06edf0c0 | 12449 | return; |
348d480f | 12450 | } |
06edf0c0 PA |
12451 | |
12452 | breakpoint_re_set_default (b); | |
348d480f PA |
12453 | } |
12454 | ||
2060206e | 12455 | static int |
348d480f PA |
12456 | bkpt_insert_location (struct bp_location *bl) |
12457 | { | |
cd6c3b4f YQ |
12458 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12459 | ||
579c6ad9 | 12460 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12461 | bl->target_info.placed_address = addr; |
12462 | ||
348d480f | 12463 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12464 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12465 | else |
7c16b83e | 12466 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12467 | } |
12468 | ||
2060206e | 12469 | static int |
73971819 | 12470 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12471 | { |
12472 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12473 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12474 | else | |
73971819 | 12475 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12476 | } |
12477 | ||
2060206e | 12478 | static int |
348d480f | 12479 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12480 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12481 | const struct target_waitstatus *ws) |
348d480f | 12482 | { |
09ac7c10 | 12483 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12484 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12485 | return 0; |
12486 | ||
348d480f PA |
12487 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12488 | aspace, bp_addr)) | |
12489 | return 0; | |
12490 | ||
12491 | if (overlay_debugging /* unmapped overlay section */ | |
12492 | && section_is_overlay (bl->section) | |
12493 | && !section_is_mapped (bl->section)) | |
12494 | return 0; | |
12495 | ||
12496 | return 1; | |
12497 | } | |
12498 | ||
cd1608cc PA |
12499 | static int |
12500 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12501 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12502 | const struct target_waitstatus *ws) |
12503 | { | |
12504 | if (dprintf_style == dprintf_style_agent | |
12505 | && target_can_run_breakpoint_commands ()) | |
12506 | { | |
12507 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12508 | for this address it must be for a breakpoint that happens to | |
12509 | be set at the same address. */ | |
12510 | return 0; | |
12511 | } | |
12512 | ||
12513 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12514 | } | |
12515 | ||
2060206e | 12516 | static int |
348d480f PA |
12517 | bkpt_resources_needed (const struct bp_location *bl) |
12518 | { | |
12519 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12520 | ||
12521 | return 1; | |
12522 | } | |
12523 | ||
2060206e | 12524 | static enum print_stop_action |
348d480f PA |
12525 | bkpt_print_it (bpstat bs) |
12526 | { | |
348d480f PA |
12527 | struct breakpoint *b; |
12528 | const struct bp_location *bl; | |
001c8c33 | 12529 | int bp_temp; |
79a45e25 | 12530 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12531 | |
12532 | gdb_assert (bs->bp_location_at != NULL); | |
12533 | ||
12534 | bl = bs->bp_location_at; | |
12535 | b = bs->breakpoint_at; | |
12536 | ||
001c8c33 PA |
12537 | bp_temp = b->disposition == disp_del; |
12538 | if (bl->address != bl->requested_address) | |
12539 | breakpoint_adjustment_warning (bl->requested_address, | |
12540 | bl->address, | |
12541 | b->number, 1); | |
12542 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12543 | maybe_print_thread_hit_breakpoint (uiout); |
12544 | ||
001c8c33 | 12545 | if (bp_temp) |
112e8700 | 12546 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12547 | else |
112e8700 SM |
12548 | uiout->text ("Breakpoint "); |
12549 | if (uiout->is_mi_like_p ()) | |
348d480f | 12550 | { |
112e8700 | 12551 | uiout->field_string ("reason", |
001c8c33 | 12552 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12553 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12554 | } |
112e8700 SM |
12555 | uiout->field_int ("bkptno", b->number); |
12556 | uiout->text (", "); | |
06edf0c0 | 12557 | |
001c8c33 | 12558 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12559 | } |
12560 | ||
2060206e | 12561 | static void |
06edf0c0 PA |
12562 | bkpt_print_mention (struct breakpoint *b) |
12563 | { | |
112e8700 | 12564 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12565 | return; |
12566 | ||
12567 | switch (b->type) | |
12568 | { | |
12569 | case bp_breakpoint: | |
12570 | case bp_gnu_ifunc_resolver: | |
12571 | if (b->disposition == disp_del) | |
12572 | printf_filtered (_("Temporary breakpoint")); | |
12573 | else | |
12574 | printf_filtered (_("Breakpoint")); | |
12575 | printf_filtered (_(" %d"), b->number); | |
12576 | if (b->type == bp_gnu_ifunc_resolver) | |
12577 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12578 | break; | |
12579 | case bp_hardware_breakpoint: | |
12580 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12581 | break; | |
e7e0cddf SS |
12582 | case bp_dprintf: |
12583 | printf_filtered (_("Dprintf %d"), b->number); | |
12584 | break; | |
06edf0c0 PA |
12585 | } |
12586 | ||
12587 | say_where (b); | |
12588 | } | |
12589 | ||
2060206e | 12590 | static void |
06edf0c0 PA |
12591 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12592 | { | |
12593 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12594 | fprintf_unfiltered (fp, "tbreak"); | |
12595 | else if (tp->type == bp_breakpoint) | |
12596 | fprintf_unfiltered (fp, "break"); | |
12597 | else if (tp->type == bp_hardware_breakpoint | |
12598 | && tp->disposition == disp_del) | |
12599 | fprintf_unfiltered (fp, "thbreak"); | |
12600 | else if (tp->type == bp_hardware_breakpoint) | |
12601 | fprintf_unfiltered (fp, "hbreak"); | |
12602 | else | |
12603 | internal_error (__FILE__, __LINE__, | |
12604 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12605 | ||
f00aae0f | 12606 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12607 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12608 | |
12609 | /* Print out extra_string if this breakpoint is pending. It might | |
12610 | contain, for example, conditions that were set by the user. */ | |
12611 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12612 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12613 | ||
dd11a36c | 12614 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12615 | } |
12616 | ||
983af33b | 12617 | static void |
f00aae0f KS |
12618 | bkpt_create_sals_from_location (const struct event_location *location, |
12619 | struct linespec_result *canonical, | |
12620 | enum bptype type_wanted) | |
983af33b | 12621 | { |
f00aae0f | 12622 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12623 | } |
12624 | ||
12625 | static void | |
12626 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12627 | struct linespec_result *canonical, | |
e1e01040 PA |
12628 | gdb::unique_xmalloc_ptr<char> cond_string, |
12629 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12630 | enum bptype type_wanted, |
12631 | enum bpdisp disposition, | |
12632 | int thread, | |
12633 | int task, int ignore_count, | |
12634 | const struct breakpoint_ops *ops, | |
12635 | int from_tty, int enabled, | |
44f238bb | 12636 | int internal, unsigned flags) |
983af33b | 12637 | { |
023fa29b | 12638 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12639 | std::move (cond_string), |
12640 | std::move (extra_string), | |
e7e0cddf | 12641 | type_wanted, |
983af33b SDJ |
12642 | disposition, thread, task, |
12643 | ignore_count, ops, from_tty, | |
44f238bb | 12644 | enabled, internal, flags); |
983af33b SDJ |
12645 | } |
12646 | ||
6c5b2ebe | 12647 | static std::vector<symtab_and_line> |
f00aae0f KS |
12648 | bkpt_decode_location (struct breakpoint *b, |
12649 | const struct event_location *location, | |
6c5b2ebe | 12650 | struct program_space *search_pspace) |
983af33b | 12651 | { |
6c5b2ebe | 12652 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12653 | } |
12654 | ||
06edf0c0 PA |
12655 | /* Virtual table for internal breakpoints. */ |
12656 | ||
12657 | static void | |
12658 | internal_bkpt_re_set (struct breakpoint *b) | |
12659 | { | |
12660 | switch (b->type) | |
12661 | { | |
12662 | /* Delete overlay event and longjmp master breakpoints; they | |
12663 | will be reset later by breakpoint_re_set. */ | |
12664 | case bp_overlay_event: | |
12665 | case bp_longjmp_master: | |
12666 | case bp_std_terminate_master: | |
12667 | case bp_exception_master: | |
12668 | delete_breakpoint (b); | |
12669 | break; | |
12670 | ||
12671 | /* This breakpoint is special, it's set up when the inferior | |
12672 | starts and we really don't want to touch it. */ | |
12673 | case bp_shlib_event: | |
12674 | ||
12675 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12676 | it is set up, we do not want to touch it. */ | |
12677 | case bp_thread_event: | |
12678 | break; | |
12679 | } | |
12680 | } | |
12681 | ||
12682 | static void | |
12683 | internal_bkpt_check_status (bpstat bs) | |
12684 | { | |
a9b3a50f PA |
12685 | if (bs->breakpoint_at->type == bp_shlib_event) |
12686 | { | |
12687 | /* If requested, stop when the dynamic linker notifies GDB of | |
12688 | events. This allows the user to get control and place | |
12689 | breakpoints in initializer routines for dynamically loaded | |
12690 | objects (among other things). */ | |
12691 | bs->stop = stop_on_solib_events; | |
12692 | bs->print = stop_on_solib_events; | |
12693 | } | |
12694 | else | |
12695 | bs->stop = 0; | |
06edf0c0 PA |
12696 | } |
12697 | ||
12698 | static enum print_stop_action | |
12699 | internal_bkpt_print_it (bpstat bs) | |
12700 | { | |
06edf0c0 | 12701 | struct breakpoint *b; |
06edf0c0 | 12702 | |
06edf0c0 PA |
12703 | b = bs->breakpoint_at; |
12704 | ||
06edf0c0 PA |
12705 | switch (b->type) |
12706 | { | |
348d480f PA |
12707 | case bp_shlib_event: |
12708 | /* Did we stop because the user set the stop_on_solib_events | |
12709 | variable? (If so, we report this as a generic, "Stopped due | |
12710 | to shlib event" message.) */ | |
edcc5120 | 12711 | print_solib_event (0); |
348d480f PA |
12712 | break; |
12713 | ||
12714 | case bp_thread_event: | |
12715 | /* Not sure how we will get here. | |
12716 | GDB should not stop for these breakpoints. */ | |
12717 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12718 | break; |
12719 | ||
12720 | case bp_overlay_event: | |
12721 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12722 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12723 | break; |
12724 | ||
12725 | case bp_longjmp_master: | |
12726 | /* These should never be enabled. */ | |
12727 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12728 | break; |
12729 | ||
12730 | case bp_std_terminate_master: | |
12731 | /* These should never be enabled. */ | |
12732 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12733 | "gdb should not stop!\n")); | |
348d480f PA |
12734 | break; |
12735 | ||
12736 | case bp_exception_master: | |
12737 | /* These should never be enabled. */ | |
12738 | printf_filtered (_("Exception Master Breakpoint: " | |
12739 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12740 | break; |
12741 | } | |
12742 | ||
001c8c33 | 12743 | return PRINT_NOTHING; |
06edf0c0 PA |
12744 | } |
12745 | ||
12746 | static void | |
12747 | internal_bkpt_print_mention (struct breakpoint *b) | |
12748 | { | |
12749 | /* Nothing to mention. These breakpoints are internal. */ | |
12750 | } | |
12751 | ||
06edf0c0 PA |
12752 | /* Virtual table for momentary breakpoints */ |
12753 | ||
12754 | static void | |
12755 | momentary_bkpt_re_set (struct breakpoint *b) | |
12756 | { | |
12757 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12758 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12759 | Otherwise these should have been blown away via the cleanup chain |
12760 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12761 | } | |
12762 | ||
12763 | static void | |
12764 | momentary_bkpt_check_status (bpstat bs) | |
12765 | { | |
12766 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12767 | } | |
12768 | ||
12769 | static enum print_stop_action | |
12770 | momentary_bkpt_print_it (bpstat bs) | |
12771 | { | |
001c8c33 | 12772 | return PRINT_UNKNOWN; |
348d480f PA |
12773 | } |
12774 | ||
06edf0c0 PA |
12775 | static void |
12776 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12777 | { |
06edf0c0 | 12778 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12779 | } |
12780 | ||
e2e4d78b JK |
12781 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12782 | ||
12783 | It gets cleared already on the removal of the first one of such placed | |
12784 | breakpoints. This is OK as they get all removed altogether. */ | |
12785 | ||
c1fc2657 | 12786 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12787 | { |
c1fc2657 | 12788 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12789 | |
c1fc2657 | 12790 | if (tp != NULL) |
e2e4d78b | 12791 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12792 | } |
12793 | ||
55aa24fb SDJ |
12794 | /* Specific methods for probe breakpoints. */ |
12795 | ||
12796 | static int | |
12797 | bkpt_probe_insert_location (struct bp_location *bl) | |
12798 | { | |
12799 | int v = bkpt_insert_location (bl); | |
12800 | ||
12801 | if (v == 0) | |
12802 | { | |
12803 | /* The insertion was successful, now let's set the probe's semaphore | |
12804 | if needed. */ | |
935676c9 | 12805 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12806 | } |
12807 | ||
12808 | return v; | |
12809 | } | |
12810 | ||
12811 | static int | |
73971819 PA |
12812 | bkpt_probe_remove_location (struct bp_location *bl, |
12813 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12814 | { |
12815 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12816 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12817 | |
73971819 | 12818 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12819 | } |
12820 | ||
12821 | static void | |
f00aae0f | 12822 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12823 | struct linespec_result *canonical, |
f00aae0f | 12824 | enum bptype type_wanted) |
55aa24fb SDJ |
12825 | { |
12826 | struct linespec_sals lsal; | |
12827 | ||
c2f4122d | 12828 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12829 | lsal.canonical |
12830 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12831 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12832 | } |
12833 | ||
6c5b2ebe | 12834 | static std::vector<symtab_and_line> |
f00aae0f KS |
12835 | bkpt_probe_decode_location (struct breakpoint *b, |
12836 | const struct event_location *location, | |
6c5b2ebe | 12837 | struct program_space *search_pspace) |
55aa24fb | 12838 | { |
6c5b2ebe PA |
12839 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12840 | if (sals.empty ()) | |
55aa24fb | 12841 | error (_("probe not found")); |
6c5b2ebe | 12842 | return sals; |
55aa24fb SDJ |
12843 | } |
12844 | ||
348d480f | 12845 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12846 | |
348d480f PA |
12847 | static void |
12848 | tracepoint_re_set (struct breakpoint *b) | |
12849 | { | |
12850 | breakpoint_re_set_default (b); | |
12851 | } | |
876fa593 | 12852 | |
348d480f PA |
12853 | static int |
12854 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12855 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12856 | const struct target_waitstatus *ws) |
348d480f PA |
12857 | { |
12858 | /* By definition, the inferior does not report stops at | |
12859 | tracepoints. */ | |
12860 | return 0; | |
74960c60 VP |
12861 | } |
12862 | ||
12863 | static void | |
348d480f PA |
12864 | tracepoint_print_one_detail (const struct breakpoint *self, |
12865 | struct ui_out *uiout) | |
74960c60 | 12866 | { |
d9b3f62e | 12867 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12868 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12869 | { |
12870 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12871 | |
112e8700 SM |
12872 | uiout->text ("\tmarker id is "); |
12873 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12874 | tp->static_trace_marker_id); |
112e8700 | 12875 | uiout->text ("\n"); |
348d480f | 12876 | } |
0d381245 VP |
12877 | } |
12878 | ||
a474d7c2 | 12879 | static void |
348d480f | 12880 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12881 | { |
112e8700 | 12882 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12883 | return; |
cc59ec59 | 12884 | |
348d480f PA |
12885 | switch (b->type) |
12886 | { | |
12887 | case bp_tracepoint: | |
12888 | printf_filtered (_("Tracepoint")); | |
12889 | printf_filtered (_(" %d"), b->number); | |
12890 | break; | |
12891 | case bp_fast_tracepoint: | |
12892 | printf_filtered (_("Fast tracepoint")); | |
12893 | printf_filtered (_(" %d"), b->number); | |
12894 | break; | |
12895 | case bp_static_tracepoint: | |
12896 | printf_filtered (_("Static tracepoint")); | |
12897 | printf_filtered (_(" %d"), b->number); | |
12898 | break; | |
12899 | default: | |
12900 | internal_error (__FILE__, __LINE__, | |
12901 | _("unhandled tracepoint type %d"), (int) b->type); | |
12902 | } | |
12903 | ||
12904 | say_where (b); | |
a474d7c2 PA |
12905 | } |
12906 | ||
348d480f | 12907 | static void |
d9b3f62e | 12908 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12909 | { |
d9b3f62e PA |
12910 | struct tracepoint *tp = (struct tracepoint *) self; |
12911 | ||
12912 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12913 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12914 | else if (self->type == bp_static_tracepoint) |
348d480f | 12915 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12916 | else if (self->type == bp_tracepoint) |
348d480f PA |
12917 | fprintf_unfiltered (fp, "trace"); |
12918 | else | |
12919 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12920 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12921 | |
f00aae0f | 12922 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12923 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12924 | print_recreate_thread (self, fp); |
12925 | ||
12926 | if (tp->pass_count) | |
12927 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12928 | } |
12929 | ||
983af33b | 12930 | static void |
f00aae0f KS |
12931 | tracepoint_create_sals_from_location (const struct event_location *location, |
12932 | struct linespec_result *canonical, | |
12933 | enum bptype type_wanted) | |
983af33b | 12934 | { |
f00aae0f | 12935 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12936 | } |
12937 | ||
12938 | static void | |
12939 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12940 | struct linespec_result *canonical, | |
e1e01040 PA |
12941 | gdb::unique_xmalloc_ptr<char> cond_string, |
12942 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12943 | enum bptype type_wanted, |
12944 | enum bpdisp disposition, | |
12945 | int thread, | |
12946 | int task, int ignore_count, | |
12947 | const struct breakpoint_ops *ops, | |
12948 | int from_tty, int enabled, | |
44f238bb | 12949 | int internal, unsigned flags) |
983af33b | 12950 | { |
023fa29b | 12951 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12952 | std::move (cond_string), |
12953 | std::move (extra_string), | |
e7e0cddf | 12954 | type_wanted, |
983af33b SDJ |
12955 | disposition, thread, task, |
12956 | ignore_count, ops, from_tty, | |
44f238bb | 12957 | enabled, internal, flags); |
983af33b SDJ |
12958 | } |
12959 | ||
6c5b2ebe | 12960 | static std::vector<symtab_and_line> |
f00aae0f KS |
12961 | tracepoint_decode_location (struct breakpoint *b, |
12962 | const struct event_location *location, | |
6c5b2ebe | 12963 | struct program_space *search_pspace) |
983af33b | 12964 | { |
6c5b2ebe | 12965 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12966 | } |
12967 | ||
2060206e | 12968 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12969 | |
55aa24fb SDJ |
12970 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12971 | static probe. */ | |
12972 | ||
12973 | static void | |
f00aae0f KS |
12974 | tracepoint_probe_create_sals_from_location |
12975 | (const struct event_location *location, | |
12976 | struct linespec_result *canonical, | |
12977 | enum bptype type_wanted) | |
55aa24fb SDJ |
12978 | { |
12979 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12980 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12981 | } |
12982 | ||
6c5b2ebe | 12983 | static std::vector<symtab_and_line> |
f00aae0f KS |
12984 | tracepoint_probe_decode_location (struct breakpoint *b, |
12985 | const struct event_location *location, | |
6c5b2ebe | 12986 | struct program_space *search_pspace) |
55aa24fb SDJ |
12987 | { |
12988 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12989 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12990 | } |
12991 | ||
12992 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12993 | ||
5c2b4418 HZ |
12994 | /* Dprintf breakpoint_ops methods. */ |
12995 | ||
12996 | static void | |
12997 | dprintf_re_set (struct breakpoint *b) | |
12998 | { | |
12999 | breakpoint_re_set_default (b); | |
13000 | ||
f00aae0f KS |
13001 | /* extra_string should never be non-NULL for dprintf. */ |
13002 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13003 | |
13004 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13005 | 2 - create a dprintf, which resolves fine. | |
13006 | 3 - disconnect from target 1 | |
13007 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13008 | ||
13009 | After steps #3/#4, you'll want the dprintf command list to | |
13010 | be updated, because target 1 and 2 may well return different | |
13011 | answers for target_can_run_breakpoint_commands(). | |
13012 | Given absence of finer grained resetting, we get to do | |
13013 | it all the time. */ | |
13014 | if (b->extra_string != NULL) | |
13015 | update_dprintf_command_list (b); | |
13016 | } | |
13017 | ||
2d9442cc HZ |
13018 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13019 | ||
13020 | static void | |
13021 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13022 | { | |
f00aae0f | 13023 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13024 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13025 | tp->extra_string); |
13026 | print_recreate_thread (tp, fp); | |
13027 | } | |
13028 | ||
9d6e6e84 HZ |
13029 | /* Implement the "after_condition_true" breakpoint_ops method for |
13030 | dprintf. | |
13031 | ||
13032 | dprintf's are implemented with regular commands in their command | |
13033 | list, but we run the commands here instead of before presenting the | |
13034 | stop to the user, as dprintf's don't actually cause a stop. This | |
13035 | also makes it so that the commands of multiple dprintfs at the same | |
13036 | address are all handled. */ | |
13037 | ||
13038 | static void | |
13039 | dprintf_after_condition_true (struct bpstats *bs) | |
13040 | { | |
04afa70c | 13041 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13042 | struct bpstats *tmp_bs_p = &tmp_bs; |
13043 | ||
13044 | /* dprintf's never cause a stop. This wasn't set in the | |
13045 | check_status hook instead because that would make the dprintf's | |
13046 | condition not be evaluated. */ | |
13047 | bs->stop = 0; | |
13048 | ||
13049 | /* Run the command list here. Take ownership of it instead of | |
13050 | copying. We never want these commands to run later in | |
13051 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13052 | be set at same address as this dprintf, or even if running the | |
13053 | commands here throws. */ | |
13054 | tmp_bs.commands = bs->commands; | |
13055 | bs->commands = NULL; | |
9d6e6e84 HZ |
13056 | |
13057 | bpstat_do_actions_1 (&tmp_bs_p); | |
13058 | ||
13059 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13060 | bpstat_do_actions_1 may return early without processing the whole | |
13061 | list. */ | |
9d6e6e84 HZ |
13062 | } |
13063 | ||
983af33b SDJ |
13064 | /* The breakpoint_ops structure to be used on static tracepoints with |
13065 | markers (`-m'). */ | |
13066 | ||
13067 | static void | |
f00aae0f | 13068 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13069 | struct linespec_result *canonical, |
f00aae0f | 13070 | enum bptype type_wanted) |
983af33b SDJ |
13071 | { |
13072 | struct linespec_sals lsal; | |
f00aae0f | 13073 | const char *arg_start, *arg; |
983af33b | 13074 | |
a20714ff | 13075 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13076 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13077 | |
f2fc3015 TT |
13078 | std::string str (arg_start, arg - arg_start); |
13079 | const char *ptr = str.c_str (); | |
a20714ff PA |
13080 | canonical->location |
13081 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13082 | |
8e9e35b1 TT |
13083 | lsal.canonical |
13084 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13085 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13086 | } |
13087 | ||
13088 | static void | |
13089 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13090 | struct linespec_result *canonical, | |
e1e01040 PA |
13091 | gdb::unique_xmalloc_ptr<char> cond_string, |
13092 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13093 | enum bptype type_wanted, |
13094 | enum bpdisp disposition, | |
13095 | int thread, | |
13096 | int task, int ignore_count, | |
13097 | const struct breakpoint_ops *ops, | |
13098 | int from_tty, int enabled, | |
44f238bb | 13099 | int internal, unsigned flags) |
983af33b | 13100 | { |
6c5b2ebe | 13101 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13102 | |
13103 | /* If the user is creating a static tracepoint by marker id | |
13104 | (strace -m MARKER_ID), then store the sals index, so that | |
13105 | breakpoint_re_set can try to match up which of the newly | |
13106 | found markers corresponds to this one, and, don't try to | |
13107 | expand multiple locations for each sal, given than SALS | |
13108 | already should contain all sals for MARKER_ID. */ | |
13109 | ||
6c5b2ebe | 13110 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13111 | { |
6c5b2ebe PA |
13112 | event_location_up location |
13113 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13114 | |
b270e6f9 | 13115 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13116 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13117 | std::move (location), NULL, |
e1e01040 PA |
13118 | std::move (cond_string), |
13119 | std::move (extra_string), | |
e7e0cddf | 13120 | type_wanted, disposition, |
983af33b | 13121 | thread, task, ignore_count, ops, |
44f238bb | 13122 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13123 | canonical->special_display); |
13124 | /* Given that its possible to have multiple markers with | |
13125 | the same string id, if the user is creating a static | |
13126 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13127 | store the sals index, so that breakpoint_re_set can | |
13128 | try to match up which of the newly found markers | |
13129 | corresponds to this one */ | |
13130 | tp->static_trace_marker_id_idx = i; | |
13131 | ||
b270e6f9 | 13132 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13133 | } |
13134 | } | |
13135 | ||
6c5b2ebe | 13136 | static std::vector<symtab_and_line> |
f00aae0f KS |
13137 | strace_marker_decode_location (struct breakpoint *b, |
13138 | const struct event_location *location, | |
6c5b2ebe | 13139 | struct program_space *search_pspace) |
983af33b SDJ |
13140 | { |
13141 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13142 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13143 | |
6c5b2ebe PA |
13144 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13145 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13146 | { |
6c5b2ebe PA |
13147 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13148 | sals.resize (1); | |
13149 | return sals; | |
983af33b SDJ |
13150 | } |
13151 | else | |
5d9310c4 | 13152 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13153 | } |
13154 | ||
13155 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13156 | ||
13157 | static int | |
13158 | strace_marker_p (struct breakpoint *b) | |
13159 | { | |
13160 | return b->ops == &strace_marker_breakpoint_ops; | |
13161 | } | |
13162 | ||
53a5351d | 13163 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13164 | structures. */ |
c906108c SS |
13165 | |
13166 | void | |
fba45db2 | 13167 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13168 | { |
52f0bd74 | 13169 | struct breakpoint *b; |
c906108c | 13170 | |
8a3fe4f8 | 13171 | gdb_assert (bpt != NULL); |
c906108c | 13172 | |
4a64f543 MS |
13173 | /* Has this bp already been deleted? This can happen because |
13174 | multiple lists can hold pointers to bp's. bpstat lists are | |
13175 | especial culprits. | |
13176 | ||
13177 | One example of this happening is a watchpoint's scope bp. When | |
13178 | the scope bp triggers, we notice that the watchpoint is out of | |
13179 | scope, and delete it. We also delete its scope bp. But the | |
13180 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13181 | That bpstat is then checked for auto-deleting bp's, which are | |
13182 | deleted. | |
13183 | ||
13184 | A real solution to this problem might involve reference counts in | |
13185 | bp's, and/or giving them pointers back to their referencing | |
13186 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13187 | storage when no more references were extent. A cheaper bandaid | |
13188 | was chosen. */ | |
c906108c SS |
13189 | if (bpt->type == bp_none) |
13190 | return; | |
13191 | ||
4a64f543 MS |
13192 | /* At least avoid this stale reference until the reference counting |
13193 | of breakpoints gets resolved. */ | |
d0fb5eae | 13194 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13195 | { |
d0fb5eae | 13196 | struct breakpoint *related; |
3a5c3e22 | 13197 | struct watchpoint *w; |
d0fb5eae JK |
13198 | |
13199 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13200 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13201 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13202 | w = (struct watchpoint *) bpt; |
13203 | else | |
13204 | w = NULL; | |
13205 | if (w != NULL) | |
13206 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13207 | |
13208 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13209 | for (related = bpt; related->related_breakpoint != bpt; | |
13210 | related = related->related_breakpoint); | |
13211 | related->related_breakpoint = bpt->related_breakpoint; | |
13212 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13213 | } |
13214 | ||
a9634178 TJB |
13215 | /* watch_command_1 creates a watchpoint but only sets its number if |
13216 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13217 | a problem in that process, we'll be asked to delete the half-created | |
13218 | watchpoint. In that case, don't announce the deletion. */ | |
13219 | if (bpt->number) | |
76727919 | 13220 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13221 | |
c906108c SS |
13222 | if (breakpoint_chain == bpt) |
13223 | breakpoint_chain = bpt->next; | |
13224 | ||
c906108c SS |
13225 | ALL_BREAKPOINTS (b) |
13226 | if (b->next == bpt) | |
c5aa993b JM |
13227 | { |
13228 | b->next = bpt->next; | |
13229 | break; | |
13230 | } | |
c906108c | 13231 | |
f431efe5 PA |
13232 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13233 | been freed. */ | |
13234 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13235 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13236 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13237 | commands are associated with the bpstat; if we remove it here, | |
13238 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13239 | event-top.c won't do anything, and temporary breakpoints with | |
13240 | commands won't work. */ | |
13241 | ||
13242 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13243 | ||
4a64f543 MS |
13244 | /* Now that breakpoint is removed from breakpoint list, update the |
13245 | global location list. This will remove locations that used to | |
13246 | belong to this breakpoint. Do this before freeing the breakpoint | |
13247 | itself, since remove_breakpoint looks at location's owner. It | |
13248 | might be better design to have location completely | |
13249 | self-contained, but it's not the case now. */ | |
44702360 | 13250 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13251 | |
4a64f543 MS |
13252 | /* On the chance that someone will soon try again to delete this |
13253 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13254 | bpt->type = bp_none; |
4d01a485 | 13255 | delete bpt; |
c906108c SS |
13256 | } |
13257 | ||
51be5b68 PA |
13258 | /* Iterator function to call a user-provided callback function once |
13259 | for each of B and its related breakpoints. */ | |
13260 | ||
13261 | static void | |
13262 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13263 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13264 | { |
13265 | struct breakpoint *related; | |
13266 | ||
13267 | related = b; | |
13268 | do | |
13269 | { | |
13270 | struct breakpoint *next; | |
13271 | ||
13272 | /* FUNCTION may delete RELATED. */ | |
13273 | next = related->related_breakpoint; | |
13274 | ||
13275 | if (next == related) | |
13276 | { | |
13277 | /* RELATED is the last ring entry. */ | |
48649e1b | 13278 | function (related); |
51be5b68 PA |
13279 | |
13280 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13281 | B. There's nothing left to do anyway, so just break | |
13282 | out. */ | |
13283 | break; | |
13284 | } | |
13285 | else | |
48649e1b | 13286 | function (related); |
51be5b68 PA |
13287 | |
13288 | related = next; | |
13289 | } | |
13290 | while (related != b); | |
13291 | } | |
95a42b64 | 13292 | |
4495129a | 13293 | static void |
981a3fb3 | 13294 | delete_command (const char *arg, int from_tty) |
c906108c | 13295 | { |
35df4500 | 13296 | struct breakpoint *b, *b_tmp; |
c906108c | 13297 | |
ea9365bb TT |
13298 | dont_repeat (); |
13299 | ||
c906108c SS |
13300 | if (arg == 0) |
13301 | { | |
13302 | int breaks_to_delete = 0; | |
13303 | ||
46c6471b PA |
13304 | /* Delete all breakpoints if no argument. Do not delete |
13305 | internal breakpoints, these have to be deleted with an | |
13306 | explicit breakpoint number argument. */ | |
c5aa993b | 13307 | ALL_BREAKPOINTS (b) |
46c6471b | 13308 | if (user_breakpoint_p (b)) |
973d738b DJ |
13309 | { |
13310 | breaks_to_delete = 1; | |
13311 | break; | |
13312 | } | |
c906108c SS |
13313 | |
13314 | /* Ask user only if there are some breakpoints to delete. */ | |
13315 | if (!from_tty | |
e2e0b3e5 | 13316 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13317 | { |
35df4500 | 13318 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13319 | if (user_breakpoint_p (b)) |
c5aa993b | 13320 | delete_breakpoint (b); |
c906108c SS |
13321 | } |
13322 | } | |
13323 | else | |
48649e1b TT |
13324 | map_breakpoint_numbers |
13325 | (arg, [&] (breakpoint *b) | |
13326 | { | |
13327 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13328 | }); | |
c906108c SS |
13329 | } |
13330 | ||
c2f4122d PA |
13331 | /* Return true if all locations of B bound to PSPACE are pending. If |
13332 | PSPACE is NULL, all locations of all program spaces are | |
13333 | considered. */ | |
13334 | ||
0d381245 | 13335 | static int |
c2f4122d | 13336 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13337 | { |
c2f4122d PA |
13338 | struct bp_location *loc; |
13339 | ||
13340 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13341 | if ((pspace == NULL | |
13342 | || loc->pspace == pspace) | |
13343 | && !loc->shlib_disabled | |
8645ff69 | 13344 | && !loc->pspace->executing_startup) |
0d381245 VP |
13345 | return 0; |
13346 | return 1; | |
fe3f5fa8 VP |
13347 | } |
13348 | ||
776592bf DE |
13349 | /* Subroutine of update_breakpoint_locations to simplify it. |
13350 | Return non-zero if multiple fns in list LOC have the same name. | |
13351 | Null names are ignored. */ | |
13352 | ||
13353 | static int | |
13354 | ambiguous_names_p (struct bp_location *loc) | |
13355 | { | |
13356 | struct bp_location *l; | |
459a2e4c TT |
13357 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13358 | xcalloc, xfree); | |
776592bf DE |
13359 | |
13360 | for (l = loc; l != NULL; l = l->next) | |
13361 | { | |
13362 | const char **slot; | |
13363 | const char *name = l->function_name; | |
13364 | ||
13365 | /* Allow for some names to be NULL, ignore them. */ | |
13366 | if (name == NULL) | |
13367 | continue; | |
13368 | ||
13369 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13370 | INSERT); | |
4a64f543 MS |
13371 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13372 | returns NULL. */ | |
776592bf DE |
13373 | if (*slot != NULL) |
13374 | { | |
13375 | htab_delete (htab); | |
13376 | return 1; | |
13377 | } | |
13378 | *slot = name; | |
13379 | } | |
13380 | ||
13381 | htab_delete (htab); | |
13382 | return 0; | |
13383 | } | |
13384 | ||
0fb4aa4b PA |
13385 | /* When symbols change, it probably means the sources changed as well, |
13386 | and it might mean the static tracepoint markers are no longer at | |
13387 | the same address or line numbers they used to be at last we | |
13388 | checked. Losing your static tracepoints whenever you rebuild is | |
13389 | undesirable. This function tries to resync/rematch gdb static | |
13390 | tracepoints with the markers on the target, for static tracepoints | |
13391 | that have not been set by marker id. Static tracepoint that have | |
13392 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13393 | The heuristic is: | |
13394 | ||
13395 | 1) For a tracepoint set at a specific address, look for a marker at | |
13396 | the old PC. If one is found there, assume to be the same marker. | |
13397 | If the name / string id of the marker found is different from the | |
13398 | previous known name, assume that means the user renamed the marker | |
13399 | in the sources, and output a warning. | |
13400 | ||
13401 | 2) For a tracepoint set at a given line number, look for a marker | |
13402 | at the new address of the old line number. If one is found there, | |
13403 | assume to be the same marker. If the name / string id of the | |
13404 | marker found is different from the previous known name, assume that | |
13405 | means the user renamed the marker in the sources, and output a | |
13406 | warning. | |
13407 | ||
13408 | 3) If a marker is no longer found at the same address or line, it | |
13409 | may mean the marker no longer exists. But it may also just mean | |
13410 | the code changed a bit. Maybe the user added a few lines of code | |
13411 | that made the marker move up or down (in line number terms). Ask | |
13412 | the target for info about the marker with the string id as we knew | |
13413 | it. If found, update line number and address in the matching | |
13414 | static tracepoint. This will get confused if there's more than one | |
13415 | marker with the same ID (possible in UST, although unadvised | |
13416 | precisely because it confuses tools). */ | |
13417 | ||
13418 | static struct symtab_and_line | |
13419 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13420 | { | |
d9b3f62e | 13421 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13422 | struct static_tracepoint_marker marker; |
13423 | CORE_ADDR pc; | |
0fb4aa4b PA |
13424 | |
13425 | pc = sal.pc; | |
13426 | if (sal.line) | |
13427 | find_line_pc (sal.symtab, sal.line, &pc); | |
13428 | ||
13429 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13430 | { | |
5d9310c4 | 13431 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13432 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13433 | b->number, tp->static_trace_marker_id.c_str (), |
13434 | marker.str_id.c_str ()); | |
0fb4aa4b | 13435 | |
5d9310c4 | 13436 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13437 | |
13438 | return sal; | |
13439 | } | |
13440 | ||
13441 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13442 | by string ID. */ | |
13443 | if (!sal.explicit_pc | |
13444 | && sal.line != 0 | |
13445 | && sal.symtab != NULL | |
5d9310c4 | 13446 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13447 | { |
5d9310c4 SM |
13448 | std::vector<static_tracepoint_marker> markers |
13449 | = target_static_tracepoint_markers_by_strid | |
13450 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13451 | |
5d9310c4 | 13452 | if (!markers.empty ()) |
0fb4aa4b | 13453 | { |
0fb4aa4b | 13454 | struct symbol *sym; |
80e1d417 | 13455 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13456 | struct ui_out *uiout = current_uiout; |
67994074 | 13457 | struct explicit_location explicit_loc; |
0fb4aa4b | 13458 | |
5d9310c4 | 13459 | tpmarker = &markers[0]; |
0fb4aa4b | 13460 | |
5d9310c4 | 13461 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13462 | |
13463 | warning (_("marker for static tracepoint %d (%s) not " | |
13464 | "found at previous line number"), | |
5d9310c4 | 13465 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13466 | |
51abb421 | 13467 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13468 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13469 | uiout->text ("Now in "); |
0fb4aa4b PA |
13470 | if (sym) |
13471 | { | |
112e8700 SM |
13472 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13473 | uiout->text (" at "); | |
0fb4aa4b | 13474 | } |
112e8700 | 13475 | uiout->field_string ("file", |
05cba821 | 13476 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13477 | uiout->text (":"); |
0fb4aa4b | 13478 | |
112e8700 | 13479 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13480 | { |
0b0865da | 13481 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13482 | |
112e8700 | 13483 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13484 | } |
13485 | ||
112e8700 SM |
13486 | uiout->field_int ("line", sal2.line); |
13487 | uiout->text ("\n"); | |
0fb4aa4b | 13488 | |
80e1d417 | 13489 | b->loc->line_number = sal2.line; |
2f202fde | 13490 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13491 | |
d28cd78a | 13492 | b->location.reset (NULL); |
67994074 KS |
13493 | initialize_explicit_location (&explicit_loc); |
13494 | explicit_loc.source_filename | |
00e52e53 | 13495 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13496 | explicit_loc.line_offset.offset = b->loc->line_number; |
13497 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13498 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13499 | |
13500 | /* Might be nice to check if function changed, and warn if | |
13501 | so. */ | |
0fb4aa4b PA |
13502 | } |
13503 | } | |
13504 | return sal; | |
13505 | } | |
13506 | ||
8d3788bd VP |
13507 | /* Returns 1 iff locations A and B are sufficiently same that |
13508 | we don't need to report breakpoint as changed. */ | |
13509 | ||
13510 | static int | |
13511 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13512 | { | |
13513 | while (a && b) | |
13514 | { | |
13515 | if (a->address != b->address) | |
13516 | return 0; | |
13517 | ||
13518 | if (a->shlib_disabled != b->shlib_disabled) | |
13519 | return 0; | |
13520 | ||
13521 | if (a->enabled != b->enabled) | |
13522 | return 0; | |
13523 | ||
13524 | a = a->next; | |
13525 | b = b->next; | |
13526 | } | |
13527 | ||
13528 | if ((a == NULL) != (b == NULL)) | |
13529 | return 0; | |
13530 | ||
13531 | return 1; | |
13532 | } | |
13533 | ||
c2f4122d PA |
13534 | /* Split all locations of B that are bound to PSPACE out of B's |
13535 | location list to a separate list and return that list's head. If | |
13536 | PSPACE is NULL, hoist out all locations of B. */ | |
13537 | ||
13538 | static struct bp_location * | |
13539 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13540 | { | |
13541 | struct bp_location head; | |
13542 | struct bp_location *i = b->loc; | |
13543 | struct bp_location **i_link = &b->loc; | |
13544 | struct bp_location *hoisted = &head; | |
13545 | ||
13546 | if (pspace == NULL) | |
13547 | { | |
13548 | i = b->loc; | |
13549 | b->loc = NULL; | |
13550 | return i; | |
13551 | } | |
13552 | ||
13553 | head.next = NULL; | |
13554 | ||
13555 | while (i != NULL) | |
13556 | { | |
13557 | if (i->pspace == pspace) | |
13558 | { | |
13559 | *i_link = i->next; | |
13560 | i->next = NULL; | |
13561 | hoisted->next = i; | |
13562 | hoisted = i; | |
13563 | } | |
13564 | else | |
13565 | i_link = &i->next; | |
13566 | i = *i_link; | |
13567 | } | |
13568 | ||
13569 | return head.next; | |
13570 | } | |
13571 | ||
13572 | /* Create new breakpoint locations for B (a hardware or software | |
13573 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13574 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13575 | FILTER_PSPACE. Locations of other program spaces are left | |
13576 | untouched. */ | |
f1310107 | 13577 | |
0e30163f | 13578 | void |
0d381245 | 13579 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13580 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13581 | gdb::array_view<const symtab_and_line> sals, |
13582 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13583 | { |
c2f4122d | 13584 | struct bp_location *existing_locations; |
0d381245 | 13585 | |
6c5b2ebe | 13586 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13587 | { |
13588 | /* Ranged breakpoints have only one start location and one end | |
13589 | location. */ | |
13590 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13591 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13592 | "multiple locations found\n"), | |
13593 | b->number); | |
13594 | return; | |
13595 | } | |
f1310107 | 13596 | |
4a64f543 MS |
13597 | /* If there's no new locations, and all existing locations are |
13598 | pending, don't do anything. This optimizes the common case where | |
13599 | all locations are in the same shared library, that was unloaded. | |
13600 | We'd like to retain the location, so that when the library is | |
13601 | loaded again, we don't loose the enabled/disabled status of the | |
13602 | individual locations. */ | |
6c5b2ebe | 13603 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13604 | return; |
13605 | ||
c2f4122d | 13606 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13607 | |
6c5b2ebe | 13608 | for (const auto &sal : sals) |
fe3f5fa8 | 13609 | { |
f8eba3c6 TT |
13610 | struct bp_location *new_loc; |
13611 | ||
6c5b2ebe | 13612 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13613 | |
6c5b2ebe | 13614 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13615 | |
0d381245 VP |
13616 | /* Reparse conditions, they might contain references to the |
13617 | old symtab. */ | |
13618 | if (b->cond_string != NULL) | |
13619 | { | |
bbc13ae3 | 13620 | const char *s; |
fe3f5fa8 | 13621 | |
0d381245 | 13622 | s = b->cond_string; |
492d29ea | 13623 | TRY |
0d381245 | 13624 | { |
6c5b2ebe PA |
13625 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13626 | block_for_pc (sal.pc), | |
0d381245 VP |
13627 | 0); |
13628 | } | |
492d29ea | 13629 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13630 | { |
3e43a32a MS |
13631 | warning (_("failed to reevaluate condition " |
13632 | "for breakpoint %d: %s"), | |
0d381245 VP |
13633 | b->number, e.message); |
13634 | new_loc->enabled = 0; | |
13635 | } | |
492d29ea | 13636 | END_CATCH |
0d381245 | 13637 | } |
fe3f5fa8 | 13638 | |
6c5b2ebe | 13639 | if (!sals_end.empty ()) |
f1310107 | 13640 | { |
6c5b2ebe | 13641 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13642 | |
6c5b2ebe | 13643 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13644 | } |
0d381245 | 13645 | } |
fe3f5fa8 | 13646 | |
4a64f543 MS |
13647 | /* If possible, carry over 'disable' status from existing |
13648 | breakpoints. */ | |
0d381245 VP |
13649 | { |
13650 | struct bp_location *e = existing_locations; | |
776592bf DE |
13651 | /* If there are multiple breakpoints with the same function name, |
13652 | e.g. for inline functions, comparing function names won't work. | |
13653 | Instead compare pc addresses; this is just a heuristic as things | |
13654 | may have moved, but in practice it gives the correct answer | |
13655 | often enough until a better solution is found. */ | |
13656 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13657 | ||
0d381245 VP |
13658 | for (; e; e = e->next) |
13659 | { | |
13660 | if (!e->enabled && e->function_name) | |
13661 | { | |
13662 | struct bp_location *l = b->loc; | |
776592bf DE |
13663 | if (have_ambiguous_names) |
13664 | { | |
13665 | for (; l; l = l->next) | |
f1310107 | 13666 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13667 | { |
13668 | l->enabled = 0; | |
13669 | break; | |
13670 | } | |
13671 | } | |
13672 | else | |
13673 | { | |
13674 | for (; l; l = l->next) | |
13675 | if (l->function_name | |
13676 | && strcmp (e->function_name, l->function_name) == 0) | |
13677 | { | |
13678 | l->enabled = 0; | |
13679 | break; | |
13680 | } | |
13681 | } | |
0d381245 VP |
13682 | } |
13683 | } | |
13684 | } | |
fe3f5fa8 | 13685 | |
8d3788bd | 13686 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13687 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13688 | } |
13689 | ||
f00aae0f | 13690 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13691 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13692 | ||
6c5b2ebe | 13693 | static std::vector<symtab_and_line> |
f00aae0f | 13694 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13695 | struct program_space *search_pspace, int *found) |
ef23e705 | 13696 | { |
492d29ea | 13697 | struct gdb_exception exception = exception_none; |
ef23e705 | 13698 | |
983af33b | 13699 | gdb_assert (b->ops != NULL); |
ef23e705 | 13700 | |
6c5b2ebe PA |
13701 | std::vector<symtab_and_line> sals; |
13702 | ||
492d29ea | 13703 | TRY |
ef23e705 | 13704 | { |
6c5b2ebe | 13705 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13706 | } |
492d29ea | 13707 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13708 | { |
13709 | int not_found_and_ok = 0; | |
492d29ea PA |
13710 | |
13711 | exception = e; | |
13712 | ||
ef23e705 TJB |
13713 | /* For pending breakpoints, it's expected that parsing will |
13714 | fail until the right shared library is loaded. User has | |
13715 | already told to create pending breakpoints and don't need | |
13716 | extra messages. If breakpoint is in bp_shlib_disabled | |
13717 | state, then user already saw the message about that | |
13718 | breakpoint being disabled, and don't want to see more | |
13719 | errors. */ | |
58438ac1 | 13720 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13721 | && (b->condition_not_parsed |
13722 | || (b->loc != NULL | |
13723 | && search_pspace != NULL | |
13724 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13725 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13726 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13727 | || b->enable_state == bp_disabled)) |
13728 | not_found_and_ok = 1; | |
13729 | ||
13730 | if (!not_found_and_ok) | |
13731 | { | |
13732 | /* We surely don't want to warn about the same breakpoint | |
13733 | 10 times. One solution, implemented here, is disable | |
13734 | the breakpoint on error. Another solution would be to | |
13735 | have separate 'warning emitted' flag. Since this | |
13736 | happens only when a binary has changed, I don't know | |
13737 | which approach is better. */ | |
13738 | b->enable_state = bp_disabled; | |
13739 | throw_exception (e); | |
13740 | } | |
13741 | } | |
492d29ea | 13742 | END_CATCH |
ef23e705 | 13743 | |
492d29ea | 13744 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13745 | { |
6c5b2ebe PA |
13746 | for (auto &sal : sals) |
13747 | resolve_sal_pc (&sal); | |
f00aae0f | 13748 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13749 | { |
ed1d1739 KS |
13750 | char *cond_string, *extra_string; |
13751 | int thread, task; | |
ef23e705 | 13752 | |
6c5b2ebe | 13753 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13754 | &cond_string, &thread, &task, |
13755 | &extra_string); | |
f00aae0f | 13756 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13757 | if (cond_string) |
13758 | b->cond_string = cond_string; | |
13759 | b->thread = thread; | |
13760 | b->task = task; | |
e7e0cddf | 13761 | if (extra_string) |
f00aae0f KS |
13762 | { |
13763 | xfree (b->extra_string); | |
13764 | b->extra_string = extra_string; | |
13765 | } | |
ef23e705 TJB |
13766 | b->condition_not_parsed = 0; |
13767 | } | |
13768 | ||
983af33b | 13769 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13770 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13771 | |
58438ac1 TT |
13772 | *found = 1; |
13773 | } | |
13774 | else | |
13775 | *found = 0; | |
ef23e705 TJB |
13776 | |
13777 | return sals; | |
13778 | } | |
13779 | ||
348d480f PA |
13780 | /* The default re_set method, for typical hardware or software |
13781 | breakpoints. Reevaluate the breakpoint and recreate its | |
13782 | locations. */ | |
13783 | ||
13784 | static void | |
28010a5d | 13785 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13786 | { |
c2f4122d | 13787 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13788 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13789 | |
6c5b2ebe PA |
13790 | int found; |
13791 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13792 | filter_pspace, &found); | |
ef23e705 | 13793 | if (found) |
6c5b2ebe | 13794 | expanded = std::move (sals); |
ef23e705 | 13795 | |
f00aae0f | 13796 | if (b->location_range_end != NULL) |
f1310107 | 13797 | { |
6c5b2ebe PA |
13798 | std::vector<symtab_and_line> sals_end |
13799 | = location_to_sals (b, b->location_range_end.get (), | |
13800 | filter_pspace, &found); | |
f1310107 | 13801 | if (found) |
6c5b2ebe | 13802 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13803 | } |
13804 | ||
c2f4122d | 13805 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13806 | } |
13807 | ||
983af33b SDJ |
13808 | /* Default method for creating SALs from an address string. It basically |
13809 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13810 | ||
13811 | static void | |
f00aae0f KS |
13812 | create_sals_from_location_default (const struct event_location *location, |
13813 | struct linespec_result *canonical, | |
13814 | enum bptype type_wanted) | |
983af33b | 13815 | { |
f00aae0f | 13816 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13817 | } |
13818 | ||
13819 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13820 | function for the `create_breakpoints_sal' method of | |
13821 | breakpoint_ops. */ | |
13822 | ||
13823 | static void | |
13824 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13825 | struct linespec_result *canonical, | |
e1e01040 PA |
13826 | gdb::unique_xmalloc_ptr<char> cond_string, |
13827 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13828 | enum bptype type_wanted, |
13829 | enum bpdisp disposition, | |
13830 | int thread, | |
13831 | int task, int ignore_count, | |
13832 | const struct breakpoint_ops *ops, | |
13833 | int from_tty, int enabled, | |
44f238bb | 13834 | int internal, unsigned flags) |
983af33b | 13835 | { |
e1e01040 PA |
13836 | create_breakpoints_sal (gdbarch, canonical, |
13837 | std::move (cond_string), | |
13838 | std::move (extra_string), | |
983af33b SDJ |
13839 | type_wanted, disposition, |
13840 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13841 | enabled, internal, flags); |
983af33b SDJ |
13842 | } |
13843 | ||
13844 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13845 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13846 | |
6c5b2ebe | 13847 | static std::vector<symtab_and_line> |
f00aae0f KS |
13848 | decode_location_default (struct breakpoint *b, |
13849 | const struct event_location *location, | |
6c5b2ebe | 13850 | struct program_space *search_pspace) |
983af33b SDJ |
13851 | { |
13852 | struct linespec_result canonical; | |
13853 | ||
c2f4122d | 13854 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13855 | (struct symtab *) NULL, 0, |
13856 | &canonical, multiple_symbols_all, | |
13857 | b->filter); | |
13858 | ||
13859 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13860 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13861 | |
6c5b2ebe | 13862 | if (!canonical.lsals.empty ()) |
983af33b | 13863 | { |
6c5b2ebe PA |
13864 | const linespec_sals &lsal = canonical.lsals[0]; |
13865 | return std::move (lsal.sals); | |
983af33b | 13866 | } |
6c5b2ebe | 13867 | return {}; |
983af33b SDJ |
13868 | } |
13869 | ||
bf469271 | 13870 | /* Reset a breakpoint. */ |
c906108c | 13871 | |
bf469271 PA |
13872 | static void |
13873 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13874 | { |
fdf44873 TT |
13875 | input_radix = b->input_radix; |
13876 | set_language (b->language); | |
c906108c | 13877 | |
348d480f | 13878 | b->ops->re_set (b); |
c906108c SS |
13879 | } |
13880 | ||
c2f4122d PA |
13881 | /* Re-set breakpoint locations for the current program space. |
13882 | Locations bound to other program spaces are left untouched. */ | |
13883 | ||
c906108c | 13884 | void |
69de3c6a | 13885 | breakpoint_re_set (void) |
c906108c | 13886 | { |
35df4500 | 13887 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13888 | |
c5aa993b | 13889 | { |
fdf44873 TT |
13890 | scoped_restore_current_language save_language; |
13891 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13892 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13893 | |
5ed8105e PA |
13894 | /* Note: we must not try to insert locations until after all |
13895 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13896 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13897 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13898 | |
5ed8105e PA |
13899 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13900 | { | |
bf469271 PA |
13901 | TRY |
13902 | { | |
13903 | breakpoint_re_set_one (b); | |
13904 | } | |
13905 | CATCH (ex, RETURN_MASK_ALL) | |
13906 | { | |
13907 | exception_fprintf (gdb_stderr, ex, | |
13908 | "Error in re-setting breakpoint %d: ", | |
13909 | b->number); | |
13910 | } | |
13911 | END_CATCH | |
5ed8105e | 13912 | } |
5ed8105e PA |
13913 | |
13914 | jit_breakpoint_re_set (); | |
13915 | } | |
6c95b8df | 13916 | |
af02033e PP |
13917 | create_overlay_event_breakpoint (); |
13918 | create_longjmp_master_breakpoint (); | |
13919 | create_std_terminate_master_breakpoint (); | |
186c406b | 13920 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13921 | |
13922 | /* Now we can insert. */ | |
13923 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13924 | } |
13925 | \f | |
c906108c SS |
13926 | /* Reset the thread number of this breakpoint: |
13927 | ||
13928 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13929 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13930 | void |
fba45db2 | 13931 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13932 | { |
13933 | if (b->thread != -1) | |
13934 | { | |
39f77062 | 13935 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 13936 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
13937 | |
13938 | /* We're being called after following a fork. The new fork is | |
13939 | selected as current, and unless this was a vfork will have a | |
13940 | different program space from the original thread. Reset that | |
13941 | as well. */ | |
13942 | b->loc->pspace = current_program_space; | |
c906108c SS |
13943 | } |
13944 | } | |
13945 | ||
03ac34d5 MS |
13946 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13947 | If from_tty is nonzero, it prints a message to that effect, | |
13948 | which ends with a period (no newline). */ | |
13949 | ||
c906108c | 13950 | void |
fba45db2 | 13951 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13952 | { |
52f0bd74 | 13953 | struct breakpoint *b; |
c906108c SS |
13954 | |
13955 | if (count < 0) | |
13956 | count = 0; | |
13957 | ||
13958 | ALL_BREAKPOINTS (b) | |
13959 | if (b->number == bptnum) | |
c5aa993b | 13960 | { |
d77f58be SS |
13961 | if (is_tracepoint (b)) |
13962 | { | |
13963 | if (from_tty && count != 0) | |
13964 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13965 | bptnum); | |
13966 | return; | |
13967 | } | |
13968 | ||
c5aa993b | 13969 | b->ignore_count = count; |
221ea385 KS |
13970 | if (from_tty) |
13971 | { | |
13972 | if (count == 0) | |
3e43a32a MS |
13973 | printf_filtered (_("Will stop next time " |
13974 | "breakpoint %d is reached."), | |
221ea385 KS |
13975 | bptnum); |
13976 | else if (count == 1) | |
a3f17187 | 13977 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13978 | bptnum); |
13979 | else | |
3e43a32a MS |
13980 | printf_filtered (_("Will ignore next %d " |
13981 | "crossings of breakpoint %d."), | |
221ea385 KS |
13982 | count, bptnum); |
13983 | } | |
76727919 | 13984 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13985 | return; |
13986 | } | |
c906108c | 13987 | |
8a3fe4f8 | 13988 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13989 | } |
13990 | ||
c906108c SS |
13991 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13992 | ||
13993 | static void | |
0b39b52e | 13994 | ignore_command (const char *args, int from_tty) |
c906108c | 13995 | { |
0b39b52e | 13996 | const char *p = args; |
52f0bd74 | 13997 | int num; |
c906108c SS |
13998 | |
13999 | if (p == 0) | |
e2e0b3e5 | 14000 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14001 | |
c906108c | 14002 | num = get_number (&p); |
5c44784c | 14003 | if (num == 0) |
8a3fe4f8 | 14004 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14005 | if (*p == 0) |
8a3fe4f8 | 14006 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14007 | |
14008 | set_ignore_count (num, | |
14009 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14010 | from_tty); | |
221ea385 KS |
14011 | if (from_tty) |
14012 | printf_filtered ("\n"); | |
c906108c SS |
14013 | } |
14014 | \f | |
d0fe4701 XR |
14015 | |
14016 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14017 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14018 | |
14019 | static void | |
d0fe4701 XR |
14020 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14021 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14022 | { |
d0fe4701 XR |
14023 | if (bp_num_range.first == 0) |
14024 | { | |
14025 | warning (_("bad breakpoint number at or near '%d'"), | |
14026 | bp_num_range.first); | |
14027 | } | |
14028 | else | |
c906108c | 14029 | { |
d0fe4701 | 14030 | struct breakpoint *b, *tmp; |
197f0a60 | 14031 | |
d0fe4701 | 14032 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14033 | { |
d0fe4701 XR |
14034 | bool match = false; |
14035 | ||
5c44784c | 14036 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14037 | if (b->number == i) |
5c44784c | 14038 | { |
bfd28288 | 14039 | match = true; |
48649e1b | 14040 | function (b); |
11cf8741 | 14041 | break; |
5c44784c | 14042 | } |
bfd28288 | 14043 | if (!match) |
d0fe4701 | 14044 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14045 | } |
c906108c SS |
14046 | } |
14047 | } | |
14048 | ||
d0fe4701 XR |
14049 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14050 | ARGS. */ | |
14051 | ||
14052 | static void | |
14053 | map_breakpoint_numbers (const char *args, | |
14054 | gdb::function_view<void (breakpoint *)> function) | |
14055 | { | |
14056 | if (args == NULL || *args == '\0') | |
14057 | error_no_arg (_("one or more breakpoint numbers")); | |
14058 | ||
14059 | number_or_range_parser parser (args); | |
14060 | ||
14061 | while (!parser.finished ()) | |
14062 | { | |
14063 | int num = parser.get_number (); | |
14064 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14065 | } | |
14066 | } | |
14067 | ||
14068 | /* Return the breakpoint location structure corresponding to the | |
14069 | BP_NUM and LOC_NUM values. */ | |
14070 | ||
0d381245 | 14071 | static struct bp_location * |
d0fe4701 | 14072 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14073 | { |
0d381245 | 14074 | struct breakpoint *b; |
0d381245 VP |
14075 | |
14076 | ALL_BREAKPOINTS (b) | |
14077 | if (b->number == bp_num) | |
14078 | { | |
14079 | break; | |
14080 | } | |
14081 | ||
14082 | if (!b || b->number != bp_num) | |
d0fe4701 | 14083 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14084 | |
0d381245 | 14085 | if (loc_num == 0) |
d0fe4701 | 14086 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14087 | |
d0fe4701 XR |
14088 | int n = 0; |
14089 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14090 | if (++n == loc_num) | |
14091 | return loc; | |
14092 | ||
14093 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14094 | } |
14095 | ||
95e95a6d PA |
14096 | /* Modes of operation for extract_bp_num. */ |
14097 | enum class extract_bp_kind | |
14098 | { | |
14099 | /* Extracting a breakpoint number. */ | |
14100 | bp, | |
14101 | ||
14102 | /* Extracting a location number. */ | |
14103 | loc, | |
14104 | }; | |
14105 | ||
14106 | /* Extract a breakpoint or location number (as determined by KIND) | |
14107 | from the string starting at START. TRAILER is a character which | |
14108 | can be found after the number. If you don't want a trailer, use | |
14109 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14110 | string. This always returns a positive integer. */ | |
14111 | ||
14112 | static int | |
14113 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14114 | int trailer, const char **end_out = NULL) | |
14115 | { | |
14116 | const char *end = start; | |
14117 | int num = get_number_trailer (&end, trailer); | |
14118 | if (num < 0) | |
14119 | error (kind == extract_bp_kind::bp | |
14120 | ? _("Negative breakpoint number '%.*s'") | |
14121 | : _("Negative breakpoint location number '%.*s'"), | |
14122 | int (end - start), start); | |
14123 | if (num == 0) | |
14124 | error (kind == extract_bp_kind::bp | |
14125 | ? _("Bad breakpoint number '%.*s'") | |
14126 | : _("Bad breakpoint location number '%.*s'"), | |
14127 | int (end - start), start); | |
14128 | ||
14129 | if (end_out != NULL) | |
14130 | *end_out = end; | |
14131 | return num; | |
14132 | } | |
14133 | ||
14134 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14135 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14136 | representing the (inclusive) range. The returned pair's elements | |
14137 | are always positive integers. */ | |
14138 | ||
14139 | static std::pair<int, int> | |
14140 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14141 | const std::string &arg, | |
14142 | std::string::size_type arg_offset) | |
14143 | { | |
14144 | std::pair<int, int> range; | |
14145 | const char *bp_loc = &arg[arg_offset]; | |
14146 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14147 | if (dash != std::string::npos) | |
14148 | { | |
14149 | /* bp_loc is a range (x-z). */ | |
14150 | if (arg.length () == dash + 1) | |
14151 | error (kind == extract_bp_kind::bp | |
14152 | ? _("Bad breakpoint number at or near: '%s'") | |
14153 | : _("Bad breakpoint location number at or near: '%s'"), | |
14154 | bp_loc); | |
14155 | ||
14156 | const char *end; | |
14157 | const char *start_first = bp_loc; | |
14158 | const char *start_second = &arg[dash + 1]; | |
14159 | range.first = extract_bp_num (kind, start_first, '-'); | |
14160 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14161 | ||
14162 | if (range.first > range.second) | |
14163 | error (kind == extract_bp_kind::bp | |
14164 | ? _("Inverted breakpoint range at '%.*s'") | |
14165 | : _("Inverted breakpoint location range at '%.*s'"), | |
14166 | int (end - start_first), start_first); | |
14167 | } | |
14168 | else | |
14169 | { | |
14170 | /* bp_loc is a single value. */ | |
14171 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14172 | range.second = range.first; | |
14173 | } | |
14174 | return range; | |
14175 | } | |
14176 | ||
d0fe4701 XR |
14177 | /* Extract the breakpoint/location range specified by ARG. Returns |
14178 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14179 | BP_LOC_RANGE. | |
14180 | ||
14181 | ARG may be in any of the following forms: | |
14182 | ||
14183 | x where 'x' is a breakpoint number. | |
14184 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14185 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14186 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14187 | location number range. | |
14188 | */ | |
14189 | ||
cc638e86 | 14190 | static void |
d0fe4701 XR |
14191 | extract_bp_number_and_location (const std::string &arg, |
14192 | std::pair<int, int> &bp_num_range, | |
14193 | std::pair<int, int> &bp_loc_range) | |
14194 | { | |
14195 | std::string::size_type dot = arg.find ('.'); | |
14196 | ||
14197 | if (dot != std::string::npos) | |
14198 | { | |
14199 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14200 | ||
14201 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14202 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14203 | |
95e95a6d PA |
14204 | bp_num_range.first |
14205 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14206 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14207 | |
95e95a6d PA |
14208 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14209 | arg, dot + 1); | |
d0fe4701 XR |
14210 | } |
14211 | else | |
14212 | { | |
14213 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14214 | |
95e95a6d | 14215 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14216 | bp_loc_range.first = 0; |
14217 | bp_loc_range.second = 0; | |
14218 | } | |
d0fe4701 XR |
14219 | } |
14220 | ||
14221 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14222 | specifies whether to enable or disable. */ | |
14223 | ||
14224 | static void | |
14225 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14226 | { | |
14227 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14228 | if (loc != NULL) | |
14229 | { | |
14230 | if (loc->enabled != enable) | |
14231 | { | |
14232 | loc->enabled = enable; | |
14233 | mark_breakpoint_location_modified (loc); | |
14234 | } | |
14235 | if (target_supports_enable_disable_tracepoint () | |
14236 | && current_trace_status ()->running && loc->owner | |
14237 | && is_tracepoint (loc->owner)) | |
14238 | target_disable_tracepoint (loc); | |
14239 | } | |
14240 | update_global_location_list (UGLL_DONT_INSERT); | |
14241 | } | |
14242 | ||
14243 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14244 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14245 | (inclusive) range of location numbers of that breakpoint to | |
14246 | enable/disable. ENABLE specifies whether to enable or disable the | |
14247 | location. */ | |
14248 | ||
14249 | static void | |
14250 | enable_disable_breakpoint_location_range (int bp_num, | |
14251 | std::pair<int, int> &bp_loc_range, | |
14252 | bool enable) | |
14253 | { | |
14254 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14255 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14256 | } | |
0d381245 | 14257 | |
1900040c MS |
14258 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14259 | If from_tty is nonzero, it prints a message to that effect, | |
14260 | which ends with a period (no newline). */ | |
14261 | ||
c906108c | 14262 | void |
fba45db2 | 14263 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14264 | { |
14265 | /* Never disable a watchpoint scope breakpoint; we want to | |
14266 | hit them when we leave scope so we can delete both the | |
14267 | watchpoint and its scope breakpoint at that time. */ | |
14268 | if (bpt->type == bp_watchpoint_scope) | |
14269 | return; | |
14270 | ||
b5de0fa7 | 14271 | bpt->enable_state = bp_disabled; |
c906108c | 14272 | |
b775012e LM |
14273 | /* Mark breakpoint locations modified. */ |
14274 | mark_breakpoint_modified (bpt); | |
14275 | ||
d248b706 KY |
14276 | if (target_supports_enable_disable_tracepoint () |
14277 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14278 | { | |
14279 | struct bp_location *location; | |
14280 | ||
14281 | for (location = bpt->loc; location; location = location->next) | |
14282 | target_disable_tracepoint (location); | |
14283 | } | |
14284 | ||
44702360 | 14285 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14286 | |
76727919 | 14287 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14288 | } |
14289 | ||
d0fe4701 XR |
14290 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14291 | specified in ARGS. ARGS may be in any of the formats handled by | |
14292 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14293 | or disable the breakpoints/locations. */ | |
14294 | ||
c906108c | 14295 | static void |
d0fe4701 | 14296 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14297 | { |
c906108c | 14298 | if (args == 0) |
46c6471b PA |
14299 | { |
14300 | struct breakpoint *bpt; | |
14301 | ||
14302 | ALL_BREAKPOINTS (bpt) | |
14303 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14304 | { |
14305 | if (enable) | |
14306 | enable_breakpoint (bpt); | |
14307 | else | |
14308 | disable_breakpoint (bpt); | |
14309 | } | |
46c6471b | 14310 | } |
9eaabc75 | 14311 | else |
0d381245 | 14312 | { |
cb791d59 | 14313 | std::string num = extract_arg (&args); |
9eaabc75 | 14314 | |
cb791d59 | 14315 | while (!num.empty ()) |
d248b706 | 14316 | { |
d0fe4701 | 14317 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14318 | |
cc638e86 PA |
14319 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14320 | ||
14321 | if (bp_loc_range.first == bp_loc_range.second | |
14322 | && bp_loc_range.first == 0) | |
d0fe4701 | 14323 | { |
cc638e86 PA |
14324 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14325 | map_breakpoint_number_range (bp_num_range, | |
14326 | enable | |
14327 | ? enable_breakpoint | |
14328 | : disable_breakpoint); | |
14329 | } | |
14330 | else | |
14331 | { | |
14332 | /* Handle breakpoint ids with formats 'x.y' or | |
14333 | 'x.y-z'. */ | |
14334 | enable_disable_breakpoint_location_range | |
14335 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14336 | } |
9eaabc75 | 14337 | num = extract_arg (&args); |
d248b706 | 14338 | } |
0d381245 | 14339 | } |
c906108c SS |
14340 | } |
14341 | ||
d0fe4701 XR |
14342 | /* The disable command disables the specified breakpoints/locations |
14343 | (or all defined breakpoints) so they're no longer effective in | |
14344 | stopping the inferior. ARGS may be in any of the forms defined in | |
14345 | extract_bp_number_and_location. */ | |
14346 | ||
14347 | static void | |
14348 | disable_command (const char *args, int from_tty) | |
14349 | { | |
14350 | enable_disable_command (args, from_tty, false); | |
14351 | } | |
14352 | ||
c906108c | 14353 | static void |
816338b5 SS |
14354 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14355 | int count) | |
c906108c | 14356 | { |
afe38095 | 14357 | int target_resources_ok; |
c906108c SS |
14358 | |
14359 | if (bpt->type == bp_hardware_breakpoint) | |
14360 | { | |
14361 | int i; | |
c5aa993b | 14362 | i = hw_breakpoint_used_count (); |
53a5351d | 14363 | target_resources_ok = |
d92524f1 | 14364 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14365 | i + 1, 0); |
c906108c | 14366 | if (target_resources_ok == 0) |
8a3fe4f8 | 14367 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14368 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14369 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14370 | } |
14371 | ||
cc60f2e3 | 14372 | if (is_watchpoint (bpt)) |
c906108c | 14373 | { |
d07205c2 | 14374 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14375 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14376 | |
492d29ea | 14377 | TRY |
c906108c | 14378 | { |
3a5c3e22 PA |
14379 | struct watchpoint *w = (struct watchpoint *) bpt; |
14380 | ||
1e718ff1 TJB |
14381 | orig_enable_state = bpt->enable_state; |
14382 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14383 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14384 | } |
492d29ea | 14385 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14386 | { |
1e718ff1 | 14387 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14388 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14389 | bpt->number); | |
14390 | return; | |
c5aa993b | 14391 | } |
492d29ea | 14392 | END_CATCH |
c906108c | 14393 | } |
0101ce28 | 14394 | |
b775012e LM |
14395 | bpt->enable_state = bp_enabled; |
14396 | ||
14397 | /* Mark breakpoint locations modified. */ | |
14398 | mark_breakpoint_modified (bpt); | |
14399 | ||
d248b706 KY |
14400 | if (target_supports_enable_disable_tracepoint () |
14401 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14402 | { | |
14403 | struct bp_location *location; | |
14404 | ||
14405 | for (location = bpt->loc; location; location = location->next) | |
14406 | target_enable_tracepoint (location); | |
14407 | } | |
14408 | ||
b4c291bb | 14409 | bpt->disposition = disposition; |
816338b5 | 14410 | bpt->enable_count = count; |
44702360 | 14411 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14412 | |
76727919 | 14413 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14414 | } |
14415 | ||
fe3f5fa8 | 14416 | |
c906108c | 14417 | void |
fba45db2 | 14418 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14419 | { |
816338b5 | 14420 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14421 | } |
14422 | ||
d0fe4701 XR |
14423 | /* The enable command enables the specified breakpoints/locations (or |
14424 | all defined breakpoints) so they once again become (or continue to | |
14425 | be) effective in stopping the inferior. ARGS may be in any of the | |
14426 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14427 | |
c906108c | 14428 | static void |
981a3fb3 | 14429 | enable_command (const char *args, int from_tty) |
c906108c | 14430 | { |
d0fe4701 | 14431 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14432 | } |
14433 | ||
c906108c | 14434 | static void |
4495129a | 14435 | enable_once_command (const char *args, int from_tty) |
c906108c | 14436 | { |
48649e1b TT |
14437 | map_breakpoint_numbers |
14438 | (args, [&] (breakpoint *b) | |
14439 | { | |
14440 | iterate_over_related_breakpoints | |
14441 | (b, [&] (breakpoint *bpt) | |
14442 | { | |
14443 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14444 | }); | |
14445 | }); | |
816338b5 SS |
14446 | } |
14447 | ||
14448 | static void | |
4495129a | 14449 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14450 | { |
b9d61307 SM |
14451 | int count; |
14452 | ||
14453 | if (args == NULL) | |
14454 | error_no_arg (_("hit count")); | |
14455 | ||
14456 | count = get_number (&args); | |
816338b5 | 14457 | |
48649e1b TT |
14458 | map_breakpoint_numbers |
14459 | (args, [&] (breakpoint *b) | |
14460 | { | |
14461 | iterate_over_related_breakpoints | |
14462 | (b, [&] (breakpoint *bpt) | |
14463 | { | |
14464 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14465 | }); | |
14466 | }); | |
c906108c SS |
14467 | } |
14468 | ||
c906108c | 14469 | static void |
4495129a | 14470 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14471 | { |
48649e1b TT |
14472 | map_breakpoint_numbers |
14473 | (args, [&] (breakpoint *b) | |
14474 | { | |
14475 | iterate_over_related_breakpoints | |
14476 | (b, [&] (breakpoint *bpt) | |
14477 | { | |
14478 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14479 | }); | |
14480 | }); | |
c906108c SS |
14481 | } |
14482 | \f | |
fa8d40ab | 14483 | static void |
981a3fb3 | 14484 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14485 | { |
14486 | } | |
14487 | ||
14488 | static void | |
981a3fb3 | 14489 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14490 | { |
14491 | } | |
14492 | ||
1f3b5d1b PP |
14493 | /* Invalidate last known value of any hardware watchpoint if |
14494 | the memory which that value represents has been written to by | |
14495 | GDB itself. */ | |
14496 | ||
14497 | static void | |
8de0566d YQ |
14498 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14499 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14500 | const bfd_byte *data) |
14501 | { | |
14502 | struct breakpoint *bp; | |
14503 | ||
14504 | ALL_BREAKPOINTS (bp) | |
14505 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14506 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14507 | { |
3a5c3e22 | 14508 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14509 | |
850645cf | 14510 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14511 | { |
14512 | struct bp_location *loc; | |
14513 | ||
14514 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14515 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14516 | && loc->address + loc->length > addr | |
14517 | && addr + len > loc->address) | |
14518 | { | |
3a5c3e22 PA |
14519 | wp->val = NULL; |
14520 | wp->val_valid = 0; | |
14521 | } | |
14522 | } | |
1f3b5d1b PP |
14523 | } |
14524 | } | |
14525 | ||
8181d85f DJ |
14526 | /* Create and insert a breakpoint for software single step. */ |
14527 | ||
14528 | void | |
6c95b8df | 14529 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14530 | const address_space *aspace, |
4a64f543 | 14531 | CORE_ADDR next_pc) |
8181d85f | 14532 | { |
7c16b83e PA |
14533 | struct thread_info *tp = inferior_thread (); |
14534 | struct symtab_and_line sal; | |
14535 | CORE_ADDR pc = next_pc; | |
8181d85f | 14536 | |
34b7e8a6 PA |
14537 | if (tp->control.single_step_breakpoints == NULL) |
14538 | { | |
14539 | tp->control.single_step_breakpoints | |
5d5658a1 | 14540 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14541 | } |
8181d85f | 14542 | |
7c16b83e PA |
14543 | sal = find_pc_line (pc, 0); |
14544 | sal.pc = pc; | |
14545 | sal.section = find_pc_overlay (pc); | |
14546 | sal.explicit_pc = 1; | |
34b7e8a6 | 14547 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14548 | |
7c16b83e | 14549 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14550 | } |
14551 | ||
93f9a11f YQ |
14552 | /* Insert single step breakpoints according to the current state. */ |
14553 | ||
14554 | int | |
14555 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14556 | { | |
f5ea389a | 14557 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14558 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14559 | |
f5ea389a | 14560 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14561 | |
a0ff9e1a | 14562 | if (!next_pcs.empty ()) |
93f9a11f | 14563 | { |
f5ea389a | 14564 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14565 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14566 | |
a0ff9e1a | 14567 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14568 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14569 | ||
93f9a11f YQ |
14570 | return 1; |
14571 | } | |
14572 | else | |
14573 | return 0; | |
14574 | } | |
14575 | ||
34b7e8a6 | 14576 | /* See breakpoint.h. */ |
f02253f1 HZ |
14577 | |
14578 | int | |
7c16b83e | 14579 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14580 | const address_space *aspace, |
7c16b83e | 14581 | CORE_ADDR pc) |
1aafd4da | 14582 | { |
7c16b83e | 14583 | struct bp_location *loc; |
1aafd4da | 14584 | |
7c16b83e PA |
14585 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14586 | if (loc->inserted | |
14587 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14588 | return 1; | |
1aafd4da | 14589 | |
7c16b83e | 14590 | return 0; |
ef370185 JB |
14591 | } |
14592 | ||
14593 | /* Check whether a software single-step breakpoint is inserted at | |
14594 | PC. */ | |
14595 | ||
14596 | int | |
accd0bcd | 14597 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14598 | CORE_ADDR pc) |
14599 | { | |
34b7e8a6 PA |
14600 | struct breakpoint *bpt; |
14601 | ||
14602 | ALL_BREAKPOINTS (bpt) | |
14603 | { | |
14604 | if (bpt->type == bp_single_step | |
14605 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14606 | return 1; | |
14607 | } | |
14608 | return 0; | |
1aafd4da UW |
14609 | } |
14610 | ||
1042e4c0 SS |
14611 | /* Tracepoint-specific operations. */ |
14612 | ||
14613 | /* Set tracepoint count to NUM. */ | |
14614 | static void | |
14615 | set_tracepoint_count (int num) | |
14616 | { | |
14617 | tracepoint_count = num; | |
4fa62494 | 14618 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14619 | } |
14620 | ||
70221824 | 14621 | static void |
0b39b52e | 14622 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14623 | { |
55aa24fb | 14624 | struct breakpoint_ops *ops; |
55aa24fb | 14625 | |
ffc2605c TT |
14626 | event_location_up location = string_to_event_location (&arg, |
14627 | current_language); | |
5b56227b | 14628 | if (location != NULL |
ffc2605c | 14629 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14630 | ops = &tracepoint_probe_breakpoint_ops; |
14631 | else | |
14632 | ops = &tracepoint_breakpoint_ops; | |
14633 | ||
558a9d82 | 14634 | create_breakpoint (get_current_arch (), |
ffc2605c | 14635 | location.get (), |
f00aae0f | 14636 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14637 | 0 /* tempflag */, |
14638 | bp_tracepoint /* type_wanted */, | |
14639 | 0 /* Ignore count */, | |
14640 | pending_break_support, | |
14641 | ops, | |
14642 | from_tty, | |
14643 | 1 /* enabled */, | |
14644 | 0 /* internal */, 0); | |
1042e4c0 SS |
14645 | } |
14646 | ||
70221824 | 14647 | static void |
0b39b52e | 14648 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14649 | { |
ffc2605c TT |
14650 | event_location_up location = string_to_event_location (&arg, |
14651 | current_language); | |
558a9d82 | 14652 | create_breakpoint (get_current_arch (), |
ffc2605c | 14653 | location.get (), |
f00aae0f | 14654 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14655 | 0 /* tempflag */, |
14656 | bp_fast_tracepoint /* type_wanted */, | |
14657 | 0 /* Ignore count */, | |
14658 | pending_break_support, | |
14659 | &tracepoint_breakpoint_ops, | |
14660 | from_tty, | |
14661 | 1 /* enabled */, | |
14662 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14663 | } |
14664 | ||
14665 | /* strace command implementation. Creates a static tracepoint. */ | |
14666 | ||
70221824 | 14667 | static void |
0b39b52e | 14668 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14669 | { |
983af33b | 14670 | struct breakpoint_ops *ops; |
ffc2605c | 14671 | event_location_up location; |
983af33b SDJ |
14672 | |
14673 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14674 | or with a normal static tracepoint. */ | |
61012eef | 14675 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14676 | { |
14677 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14678 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14679 | } |
983af33b | 14680 | else |
f00aae0f KS |
14681 | { |
14682 | ops = &tracepoint_breakpoint_ops; | |
14683 | location = string_to_event_location (&arg, current_language); | |
14684 | } | |
983af33b | 14685 | |
558a9d82 | 14686 | create_breakpoint (get_current_arch (), |
ffc2605c | 14687 | location.get (), |
f00aae0f | 14688 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14689 | 0 /* tempflag */, |
14690 | bp_static_tracepoint /* type_wanted */, | |
14691 | 0 /* Ignore count */, | |
14692 | pending_break_support, | |
14693 | ops, | |
14694 | from_tty, | |
14695 | 1 /* enabled */, | |
14696 | 0 /* internal */, 0); | |
7a697b8d SS |
14697 | } |
14698 | ||
409873ef SS |
14699 | /* Set up a fake reader function that gets command lines from a linked |
14700 | list that was acquired during tracepoint uploading. */ | |
14701 | ||
14702 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14703 | static int next_cmd; |
409873ef SS |
14704 | |
14705 | static char * | |
14706 | read_uploaded_action (void) | |
14707 | { | |
a18ba4e4 | 14708 | char *rslt = nullptr; |
409873ef | 14709 | |
a18ba4e4 SM |
14710 | if (next_cmd < this_utp->cmd_strings.size ()) |
14711 | { | |
14712 | rslt = this_utp->cmd_strings[next_cmd]; | |
14713 | next_cmd++; | |
14714 | } | |
409873ef SS |
14715 | |
14716 | return rslt; | |
14717 | } | |
14718 | ||
00bf0b85 SS |
14719 | /* Given information about a tracepoint as recorded on a target (which |
14720 | can be either a live system or a trace file), attempt to create an | |
14721 | equivalent GDB tracepoint. This is not a reliable process, since | |
14722 | the target does not necessarily have all the information used when | |
14723 | the tracepoint was originally defined. */ | |
14724 | ||
d9b3f62e | 14725 | struct tracepoint * |
00bf0b85 | 14726 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14727 | { |
f2fc3015 TT |
14728 | const char *addr_str; |
14729 | char small_buf[100]; | |
d9b3f62e | 14730 | struct tracepoint *tp; |
fd9b8c24 | 14731 | |
409873ef SS |
14732 | if (utp->at_string) |
14733 | addr_str = utp->at_string; | |
14734 | else | |
14735 | { | |
14736 | /* In the absence of a source location, fall back to raw | |
14737 | address. Since there is no way to confirm that the address | |
14738 | means the same thing as when the trace was started, warn the | |
14739 | user. */ | |
3e43a32a MS |
14740 | warning (_("Uploaded tracepoint %d has no " |
14741 | "source location, using raw address"), | |
409873ef | 14742 | utp->number); |
8c042590 | 14743 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14744 | addr_str = small_buf; |
14745 | } | |
14746 | ||
14747 | /* There's not much we can do with a sequence of bytecodes. */ | |
14748 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14749 | warning (_("Uploaded tracepoint %d condition " |
14750 | "has no source form, ignoring it"), | |
409873ef | 14751 | utp->number); |
d5551862 | 14752 | |
ffc2605c TT |
14753 | event_location_up location = string_to_event_location (&addr_str, |
14754 | current_language); | |
8cdf0e15 | 14755 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14756 | location.get (), |
f00aae0f | 14757 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14758 | 0 /* parse cond/thread */, |
8cdf0e15 | 14759 | 0 /* tempflag */, |
0fb4aa4b | 14760 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14761 | 0 /* Ignore count */, |
14762 | pending_break_support, | |
348d480f | 14763 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14764 | 0 /* from_tty */, |
84f4c1fe | 14765 | utp->enabled /* enabled */, |
44f238bb PA |
14766 | 0 /* internal */, |
14767 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14768 | return NULL; |
fd9b8c24 | 14769 | |
409873ef | 14770 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14771 | tp = get_tracepoint (tracepoint_count); |
14772 | gdb_assert (tp != NULL); | |
d5551862 | 14773 | |
00bf0b85 SS |
14774 | if (utp->pass > 0) |
14775 | { | |
8c042590 | 14776 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14777 | tp->number); |
00bf0b85 | 14778 | |
409873ef | 14779 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14780 | } |
14781 | ||
409873ef SS |
14782 | /* If we have uploaded versions of the original commands, set up a |
14783 | special-purpose "reader" function and call the usual command line | |
14784 | reader, then pass the result to the breakpoint command-setting | |
14785 | function. */ | |
a18ba4e4 | 14786 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14787 | { |
93921405 | 14788 | command_line_up cmd_list; |
00bf0b85 | 14789 | |
409873ef | 14790 | this_utp = utp; |
3149d8c1 | 14791 | next_cmd = 0; |
d5551862 | 14792 | |
409873ef SS |
14793 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14794 | ||
c1fc2657 | 14795 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14796 | } |
a18ba4e4 SM |
14797 | else if (!utp->actions.empty () |
14798 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14799 | warning (_("Uploaded tracepoint %d actions " |
14800 | "have no source form, ignoring them"), | |
409873ef | 14801 | utp->number); |
00bf0b85 | 14802 | |
f196051f | 14803 | /* Copy any status information that might be available. */ |
c1fc2657 | 14804 | tp->hit_count = utp->hit_count; |
f196051f SS |
14805 | tp->traceframe_usage = utp->traceframe_usage; |
14806 | ||
00bf0b85 | 14807 | return tp; |
d9b3f62e | 14808 | } |
00bf0b85 | 14809 | |
1042e4c0 SS |
14810 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14811 | omitted. */ | |
14812 | ||
14813 | static void | |
1d12d88f | 14814 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14815 | { |
79a45e25 | 14816 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14817 | int num_printed; |
1042e4c0 | 14818 | |
e5a67952 | 14819 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14820 | |
14821 | if (num_printed == 0) | |
1042e4c0 | 14822 | { |
e5a67952 | 14823 | if (args == NULL || *args == '\0') |
112e8700 | 14824 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14825 | else |
112e8700 | 14826 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14827 | } |
ad443146 SS |
14828 | |
14829 | default_collect_info (); | |
1042e4c0 SS |
14830 | } |
14831 | ||
4a64f543 | 14832 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14833 | Not supported by all targets. */ |
14834 | static void | |
5fed81ff | 14835 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14836 | { |
14837 | enable_command (args, from_tty); | |
14838 | } | |
14839 | ||
4a64f543 | 14840 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14841 | Not supported by all targets. */ |
14842 | static void | |
5fed81ff | 14843 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14844 | { |
14845 | disable_command (args, from_tty); | |
14846 | } | |
14847 | ||
4a64f543 | 14848 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14849 | static void |
4495129a | 14850 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14851 | { |
35df4500 | 14852 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14853 | |
14854 | dont_repeat (); | |
14855 | ||
14856 | if (arg == 0) | |
14857 | { | |
14858 | int breaks_to_delete = 0; | |
14859 | ||
14860 | /* Delete all breakpoints if no argument. | |
14861 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14862 | have to be deleted with an explicit breakpoint number |
14863 | argument. */ | |
1042e4c0 | 14864 | ALL_TRACEPOINTS (b) |
46c6471b | 14865 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14866 | { |
14867 | breaks_to_delete = 1; | |
14868 | break; | |
14869 | } | |
1042e4c0 SS |
14870 | |
14871 | /* Ask user only if there are some breakpoints to delete. */ | |
14872 | if (!from_tty | |
14873 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14874 | { | |
35df4500 | 14875 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14876 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14877 | delete_breakpoint (b); |
1042e4c0 SS |
14878 | } |
14879 | } | |
14880 | else | |
48649e1b TT |
14881 | map_breakpoint_numbers |
14882 | (arg, [&] (breakpoint *b) | |
14883 | { | |
14884 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14885 | }); | |
1042e4c0 SS |
14886 | } |
14887 | ||
197f0a60 TT |
14888 | /* Helper function for trace_pass_command. */ |
14889 | ||
14890 | static void | |
d9b3f62e | 14891 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14892 | { |
d9b3f62e | 14893 | tp->pass_count = count; |
76727919 | 14894 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14895 | if (from_tty) |
14896 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14897 | tp->number, count); |
197f0a60 TT |
14898 | } |
14899 | ||
1042e4c0 SS |
14900 | /* Set passcount for tracepoint. |
14901 | ||
14902 | First command argument is passcount, second is tracepoint number. | |
14903 | If tracepoint number omitted, apply to most recently defined. | |
14904 | Also accepts special argument "all". */ | |
14905 | ||
14906 | static void | |
0b39b52e | 14907 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14908 | { |
d9b3f62e | 14909 | struct tracepoint *t1; |
0b39b52e | 14910 | ULONGEST count; |
1042e4c0 SS |
14911 | |
14912 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14913 | error (_("passcount command requires an " |
14914 | "argument (count + optional TP num)")); | |
1042e4c0 | 14915 | |
0b39b52e | 14916 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14917 | |
529480d0 | 14918 | args = skip_spaces (args); |
1042e4c0 SS |
14919 | if (*args && strncasecmp (args, "all", 3) == 0) |
14920 | { | |
d9b3f62e PA |
14921 | struct breakpoint *b; |
14922 | ||
1042e4c0 | 14923 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14924 | if (*args) |
14925 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14926 | |
d9b3f62e | 14927 | ALL_TRACEPOINTS (b) |
197f0a60 | 14928 | { |
d9b3f62e | 14929 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14930 | trace_pass_set_count (t1, count, from_tty); |
14931 | } | |
14932 | } | |
14933 | else if (*args == '\0') | |
1042e4c0 | 14934 | { |
5fa1d40e | 14935 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14936 | if (t1) |
197f0a60 TT |
14937 | trace_pass_set_count (t1, count, from_tty); |
14938 | } | |
14939 | else | |
14940 | { | |
bfd28288 PA |
14941 | number_or_range_parser parser (args); |
14942 | while (!parser.finished ()) | |
1042e4c0 | 14943 | { |
bfd28288 | 14944 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14945 | if (t1) |
14946 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14947 | } |
14948 | } | |
1042e4c0 SS |
14949 | } |
14950 | ||
d9b3f62e | 14951 | struct tracepoint * |
1042e4c0 SS |
14952 | get_tracepoint (int num) |
14953 | { | |
14954 | struct breakpoint *t; | |
14955 | ||
14956 | ALL_TRACEPOINTS (t) | |
14957 | if (t->number == num) | |
d9b3f62e | 14958 | return (struct tracepoint *) t; |
1042e4c0 SS |
14959 | |
14960 | return NULL; | |
14961 | } | |
14962 | ||
d5551862 SS |
14963 | /* Find the tracepoint with the given target-side number (which may be |
14964 | different from the tracepoint number after disconnecting and | |
14965 | reconnecting). */ | |
14966 | ||
d9b3f62e | 14967 | struct tracepoint * |
d5551862 SS |
14968 | get_tracepoint_by_number_on_target (int num) |
14969 | { | |
d9b3f62e | 14970 | struct breakpoint *b; |
d5551862 | 14971 | |
d9b3f62e PA |
14972 | ALL_TRACEPOINTS (b) |
14973 | { | |
14974 | struct tracepoint *t = (struct tracepoint *) b; | |
14975 | ||
14976 | if (t->number_on_target == num) | |
14977 | return t; | |
14978 | } | |
d5551862 SS |
14979 | |
14980 | return NULL; | |
14981 | } | |
14982 | ||
1042e4c0 | 14983 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14984 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14985 | If the argument is missing, the most recent tracepoint |
14986 | (tracepoint_count) is returned. */ | |
14987 | ||
d9b3f62e | 14988 | struct tracepoint * |
0b39b52e | 14989 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14990 | number_or_range_parser *parser) |
1042e4c0 | 14991 | { |
1042e4c0 SS |
14992 | struct breakpoint *t; |
14993 | int tpnum; | |
0b39b52e | 14994 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14995 | |
bfd28288 | 14996 | if (parser != NULL) |
197f0a60 | 14997 | { |
bfd28288 PA |
14998 | gdb_assert (!parser->finished ()); |
14999 | tpnum = parser->get_number (); | |
197f0a60 TT |
15000 | } |
15001 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15002 | tpnum = tracepoint_count; |
1042e4c0 | 15003 | else |
197f0a60 | 15004 | tpnum = get_number (arg); |
1042e4c0 SS |
15005 | |
15006 | if (tpnum <= 0) | |
15007 | { | |
15008 | if (instring && *instring) | |
15009 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15010 | instring); | |
15011 | else | |
5fa1d40e | 15012 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15013 | return NULL; |
15014 | } | |
15015 | ||
15016 | ALL_TRACEPOINTS (t) | |
15017 | if (t->number == tpnum) | |
15018 | { | |
d9b3f62e | 15019 | return (struct tracepoint *) t; |
1042e4c0 SS |
15020 | } |
15021 | ||
1042e4c0 SS |
15022 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15023 | return NULL; | |
15024 | } | |
15025 | ||
d9b3f62e PA |
15026 | void |
15027 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15028 | { | |
15029 | if (b->thread != -1) | |
15030 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15031 | ||
15032 | if (b->task != 0) | |
15033 | fprintf_unfiltered (fp, " task %d", b->task); | |
15034 | ||
15035 | fprintf_unfiltered (fp, "\n"); | |
15036 | } | |
15037 | ||
6149aea9 PA |
15038 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15039 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15040 | on each breakpoint and only include the ones for which it returns | |
15041 | non-zero. */ | |
15042 | ||
1042e4c0 | 15043 | static void |
4495129a | 15044 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15045 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15046 | { |
15047 | struct breakpoint *tp; | |
6149aea9 | 15048 | int any = 0; |
6149aea9 | 15049 | int extra_trace_bits = 0; |
1042e4c0 | 15050 | |
6149aea9 PA |
15051 | if (filename == 0 || *filename == 0) |
15052 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15053 | |
15054 | /* See if we have anything to save. */ | |
6149aea9 | 15055 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15056 | { |
6149aea9 | 15057 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15058 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15059 | continue; |
15060 | ||
15061 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15062 | if (filter && !filter (tp)) | |
15063 | continue; | |
15064 | ||
15065 | any = 1; | |
15066 | ||
15067 | if (is_tracepoint (tp)) | |
15068 | { | |
15069 | extra_trace_bits = 1; | |
15070 | ||
15071 | /* We can stop searching. */ | |
15072 | break; | |
15073 | } | |
1042e4c0 | 15074 | } |
6149aea9 PA |
15075 | |
15076 | if (!any) | |
1042e4c0 | 15077 | { |
6149aea9 | 15078 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15079 | return; |
15080 | } | |
15081 | ||
ee0c3293 | 15082 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15083 | |
15084 | stdio_file fp; | |
15085 | ||
ee0c3293 | 15086 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15087 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15088 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15089 | |
6149aea9 | 15090 | if (extra_trace_bits) |
d7e74731 | 15091 | save_trace_state_variables (&fp); |
8bf6485c | 15092 | |
6149aea9 | 15093 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15094 | { |
6149aea9 | 15095 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15096 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15097 | continue; |
8bf6485c | 15098 | |
6149aea9 PA |
15099 | /* If we have a filter, only save the breakpoints it accepts. */ |
15100 | if (filter && !filter (tp)) | |
15101 | continue; | |
15102 | ||
d7e74731 | 15103 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15104 | |
6149aea9 PA |
15105 | /* Note, we can't rely on tp->number for anything, as we can't |
15106 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15107 | instead. */ | |
15108 | ||
15109 | if (tp->cond_string) | |
d7e74731 | 15110 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15111 | |
15112 | if (tp->ignore_count) | |
d7e74731 | 15113 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15114 | |
2d9442cc | 15115 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15116 | { |
d7e74731 | 15117 | fp.puts (" commands\n"); |
a7bdde9e | 15118 | |
d7e74731 | 15119 | current_uiout->redirect (&fp); |
492d29ea | 15120 | TRY |
1042e4c0 | 15121 | { |
d1b0a7bf | 15122 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15123 | } |
492d29ea PA |
15124 | CATCH (ex, RETURN_MASK_ALL) |
15125 | { | |
112e8700 | 15126 | current_uiout->redirect (NULL); |
492d29ea PA |
15127 | throw_exception (ex); |
15128 | } | |
15129 | END_CATCH | |
1042e4c0 | 15130 | |
112e8700 | 15131 | current_uiout->redirect (NULL); |
d7e74731 | 15132 | fp.puts (" end\n"); |
1042e4c0 | 15133 | } |
6149aea9 PA |
15134 | |
15135 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15136 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15137 | |
15138 | /* If this is a multi-location breakpoint, check if the locations | |
15139 | should be individually disabled. Watchpoint locations are | |
15140 | special, and not user visible. */ | |
15141 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15142 | { | |
15143 | struct bp_location *loc; | |
15144 | int n = 1; | |
15145 | ||
15146 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15147 | if (!loc->enabled) | |
d7e74731 | 15148 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15149 | } |
1042e4c0 | 15150 | } |
8bf6485c | 15151 | |
6149aea9 | 15152 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15153 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15154 | |
1042e4c0 | 15155 | if (from_tty) |
ee0c3293 | 15156 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15157 | } |
15158 | ||
15159 | /* The `save breakpoints' command. */ | |
15160 | ||
15161 | static void | |
4495129a | 15162 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15163 | { |
15164 | save_breakpoints (args, from_tty, NULL); | |
15165 | } | |
15166 | ||
15167 | /* The `save tracepoints' command. */ | |
15168 | ||
15169 | static void | |
4495129a | 15170 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15171 | { |
15172 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15173 | } |
15174 | ||
15175 | /* Create a vector of all tracepoints. */ | |
15176 | ||
15177 | VEC(breakpoint_p) * | |
eeae04df | 15178 | all_tracepoints (void) |
1042e4c0 SS |
15179 | { |
15180 | VEC(breakpoint_p) *tp_vec = 0; | |
15181 | struct breakpoint *tp; | |
15182 | ||
15183 | ALL_TRACEPOINTS (tp) | |
15184 | { | |
15185 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15186 | } | |
15187 | ||
15188 | return tp_vec; | |
15189 | } | |
15190 | ||
c906108c | 15191 | \f |
629500fa KS |
15192 | /* This help string is used to consolidate all the help string for specifying |
15193 | locations used by several commands. */ | |
15194 | ||
15195 | #define LOCATION_HELP_STRING \ | |
15196 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15197 | source filename, function name, label name, and line number.\n\ | |
15198 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15199 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15200 | \"factorial.c:fact:the_top\".\n\ | |
15201 | \n\ | |
15202 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15203 | program. Example: To specify the fourth byte past the start function\n\ | |
15204 | \"main\", use \"*main + 4\".\n\ | |
15205 | \n\ | |
15206 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15207 | syntax to specify location parameters.\n\ | |
15208 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15209 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15210 | -function fact -label the_top\".\n\ |
15211 | \n\ | |
15212 | By default, a specified function is matched against the program's\n\ | |
15213 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15214 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15215 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15216 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15217 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15218 | |
4a64f543 MS |
15219 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15220 | commands. It is defined as a macro to prevent duplication. | |
15221 | COMMAND should be a string constant containing the name of the | |
15222 | command. */ | |
629500fa | 15223 | |
31e2b00f | 15224 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15225 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15226 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15227 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15228 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15229 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15230 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15231 | below.\n\ | |
15232 | \n\ | |
dc10affe PA |
15233 | With no LOCATION, uses current execution address of the selected\n\ |
15234 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15235 | \n\ |
15236 | THREADNUM is the number from \"info threads\".\n\ | |
15237 | CONDITION is a boolean expression.\n\ | |
629500fa | 15238 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15239 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15240 | conditions are different.\n\ | |
31e2b00f AS |
15241 | \n\ |
15242 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15243 | ||
44feb3ce TT |
15244 | /* List of subcommands for "catch". */ |
15245 | static struct cmd_list_element *catch_cmdlist; | |
15246 | ||
15247 | /* List of subcommands for "tcatch". */ | |
15248 | static struct cmd_list_element *tcatch_cmdlist; | |
15249 | ||
9ac4176b | 15250 | void |
a121b7c1 | 15251 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15252 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15253 | completer_ftype *completer, |
44feb3ce TT |
15254 | void *user_data_catch, |
15255 | void *user_data_tcatch) | |
15256 | { | |
15257 | struct cmd_list_element *command; | |
15258 | ||
0450cc4c | 15259 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15260 | &catch_cmdlist); |
15261 | set_cmd_sfunc (command, sfunc); | |
15262 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15263 | set_cmd_completer (command, completer); |
44feb3ce | 15264 | |
0450cc4c | 15265 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15266 | &tcatch_cmdlist); |
15267 | set_cmd_sfunc (command, sfunc); | |
15268 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15269 | set_cmd_completer (command, completer); |
44feb3ce TT |
15270 | } |
15271 | ||
6149aea9 | 15272 | static void |
981a3fb3 | 15273 | save_command (const char *arg, int from_tty) |
6149aea9 | 15274 | { |
3e43a32a MS |
15275 | printf_unfiltered (_("\"save\" must be followed by " |
15276 | "the name of a save subcommand.\n")); | |
635c7e8a | 15277 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15278 | } |
15279 | ||
84f4c1fe PM |
15280 | struct breakpoint * |
15281 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15282 | void *data) | |
15283 | { | |
35df4500 | 15284 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15285 | |
35df4500 | 15286 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15287 | { |
15288 | if ((*callback) (b, data)) | |
15289 | return b; | |
15290 | } | |
15291 | ||
15292 | return NULL; | |
15293 | } | |
15294 | ||
0574c78f GB |
15295 | /* Zero if any of the breakpoint's locations could be a location where |
15296 | functions have been inlined, nonzero otherwise. */ | |
15297 | ||
15298 | static int | |
15299 | is_non_inline_function (struct breakpoint *b) | |
15300 | { | |
15301 | /* The shared library event breakpoint is set on the address of a | |
15302 | non-inline function. */ | |
15303 | if (b->type == bp_shlib_event) | |
15304 | return 1; | |
15305 | ||
15306 | return 0; | |
15307 | } | |
15308 | ||
15309 | /* Nonzero if the specified PC cannot be a location where functions | |
15310 | have been inlined. */ | |
15311 | ||
15312 | int | |
accd0bcd | 15313 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15314 | const struct target_waitstatus *ws) |
0574c78f GB |
15315 | { |
15316 | struct breakpoint *b; | |
15317 | struct bp_location *bl; | |
15318 | ||
15319 | ALL_BREAKPOINTS (b) | |
15320 | { | |
15321 | if (!is_non_inline_function (b)) | |
15322 | continue; | |
15323 | ||
15324 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15325 | { | |
15326 | if (!bl->shlib_disabled | |
09ac7c10 | 15327 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15328 | return 1; |
15329 | } | |
15330 | } | |
15331 | ||
15332 | return 0; | |
15333 | } | |
15334 | ||
2f202fde JK |
15335 | /* Remove any references to OBJFILE which is going to be freed. */ |
15336 | ||
15337 | void | |
15338 | breakpoint_free_objfile (struct objfile *objfile) | |
15339 | { | |
15340 | struct bp_location **locp, *loc; | |
15341 | ||
15342 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15343 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15344 | loc->symtab = NULL; |
15345 | } | |
15346 | ||
2060206e PA |
15347 | void |
15348 | initialize_breakpoint_ops (void) | |
15349 | { | |
15350 | static int initialized = 0; | |
15351 | ||
15352 | struct breakpoint_ops *ops; | |
15353 | ||
15354 | if (initialized) | |
15355 | return; | |
15356 | initialized = 1; | |
15357 | ||
15358 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15359 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15360 | internal and momentary breakpoints, etc.). */ | |
15361 | ops = &bkpt_base_breakpoint_ops; | |
15362 | *ops = base_breakpoint_ops; | |
15363 | ops->re_set = bkpt_re_set; | |
15364 | ops->insert_location = bkpt_insert_location; | |
15365 | ops->remove_location = bkpt_remove_location; | |
15366 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15367 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15368 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15369 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15370 | |
15371 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15372 | ops = &bkpt_breakpoint_ops; | |
15373 | *ops = bkpt_base_breakpoint_ops; | |
15374 | ops->re_set = bkpt_re_set; | |
15375 | ops->resources_needed = bkpt_resources_needed; | |
15376 | ops->print_it = bkpt_print_it; | |
15377 | ops->print_mention = bkpt_print_mention; | |
15378 | ops->print_recreate = bkpt_print_recreate; | |
15379 | ||
15380 | /* Ranged breakpoints. */ | |
15381 | ops = &ranged_breakpoint_ops; | |
15382 | *ops = bkpt_breakpoint_ops; | |
15383 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15384 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15385 | ops->print_it = print_it_ranged_breakpoint; | |
15386 | ops->print_one = print_one_ranged_breakpoint; | |
15387 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15388 | ops->print_mention = print_mention_ranged_breakpoint; | |
15389 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15390 | ||
15391 | /* Internal breakpoints. */ | |
15392 | ops = &internal_breakpoint_ops; | |
15393 | *ops = bkpt_base_breakpoint_ops; | |
15394 | ops->re_set = internal_bkpt_re_set; | |
15395 | ops->check_status = internal_bkpt_check_status; | |
15396 | ops->print_it = internal_bkpt_print_it; | |
15397 | ops->print_mention = internal_bkpt_print_mention; | |
15398 | ||
15399 | /* Momentary breakpoints. */ | |
15400 | ops = &momentary_breakpoint_ops; | |
15401 | *ops = bkpt_base_breakpoint_ops; | |
15402 | ops->re_set = momentary_bkpt_re_set; | |
15403 | ops->check_status = momentary_bkpt_check_status; | |
15404 | ops->print_it = momentary_bkpt_print_it; | |
15405 | ops->print_mention = momentary_bkpt_print_mention; | |
15406 | ||
55aa24fb SDJ |
15407 | /* Probe breakpoints. */ |
15408 | ops = &bkpt_probe_breakpoint_ops; | |
15409 | *ops = bkpt_breakpoint_ops; | |
15410 | ops->insert_location = bkpt_probe_insert_location; | |
15411 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15412 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15413 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15414 | |
2060206e PA |
15415 | /* Watchpoints. */ |
15416 | ops = &watchpoint_breakpoint_ops; | |
15417 | *ops = base_breakpoint_ops; | |
15418 | ops->re_set = re_set_watchpoint; | |
15419 | ops->insert_location = insert_watchpoint; | |
15420 | ops->remove_location = remove_watchpoint; | |
15421 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15422 | ops->check_status = check_status_watchpoint; | |
15423 | ops->resources_needed = resources_needed_watchpoint; | |
15424 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15425 | ops->print_it = print_it_watchpoint; | |
15426 | ops->print_mention = print_mention_watchpoint; | |
15427 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15428 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15429 | |
15430 | /* Masked watchpoints. */ | |
15431 | ops = &masked_watchpoint_breakpoint_ops; | |
15432 | *ops = watchpoint_breakpoint_ops; | |
15433 | ops->insert_location = insert_masked_watchpoint; | |
15434 | ops->remove_location = remove_masked_watchpoint; | |
15435 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15436 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15437 | ops->print_it = print_it_masked_watchpoint; | |
15438 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15439 | ops->print_mention = print_mention_masked_watchpoint; | |
15440 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15441 | ||
15442 | /* Tracepoints. */ | |
15443 | ops = &tracepoint_breakpoint_ops; | |
15444 | *ops = base_breakpoint_ops; | |
15445 | ops->re_set = tracepoint_re_set; | |
15446 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15447 | ops->print_one_detail = tracepoint_print_one_detail; | |
15448 | ops->print_mention = tracepoint_print_mention; | |
15449 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15450 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15451 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15452 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15453 | |
55aa24fb SDJ |
15454 | /* Probe tracepoints. */ |
15455 | ops = &tracepoint_probe_breakpoint_ops; | |
15456 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15457 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15458 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15459 | |
983af33b SDJ |
15460 | /* Static tracepoints with marker (`-m'). */ |
15461 | ops = &strace_marker_breakpoint_ops; | |
15462 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15463 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15464 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15465 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15466 | |
15467 | /* Fork catchpoints. */ | |
15468 | ops = &catch_fork_breakpoint_ops; | |
15469 | *ops = base_breakpoint_ops; | |
15470 | ops->insert_location = insert_catch_fork; | |
15471 | ops->remove_location = remove_catch_fork; | |
15472 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15473 | ops->print_it = print_it_catch_fork; | |
15474 | ops->print_one = print_one_catch_fork; | |
15475 | ops->print_mention = print_mention_catch_fork; | |
15476 | ops->print_recreate = print_recreate_catch_fork; | |
15477 | ||
15478 | /* Vfork catchpoints. */ | |
15479 | ops = &catch_vfork_breakpoint_ops; | |
15480 | *ops = base_breakpoint_ops; | |
15481 | ops->insert_location = insert_catch_vfork; | |
15482 | ops->remove_location = remove_catch_vfork; | |
15483 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15484 | ops->print_it = print_it_catch_vfork; | |
15485 | ops->print_one = print_one_catch_vfork; | |
15486 | ops->print_mention = print_mention_catch_vfork; | |
15487 | ops->print_recreate = print_recreate_catch_vfork; | |
15488 | ||
15489 | /* Exec catchpoints. */ | |
15490 | ops = &catch_exec_breakpoint_ops; | |
15491 | *ops = base_breakpoint_ops; | |
2060206e PA |
15492 | ops->insert_location = insert_catch_exec; |
15493 | ops->remove_location = remove_catch_exec; | |
15494 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15495 | ops->print_it = print_it_catch_exec; | |
15496 | ops->print_one = print_one_catch_exec; | |
15497 | ops->print_mention = print_mention_catch_exec; | |
15498 | ops->print_recreate = print_recreate_catch_exec; | |
15499 | ||
edcc5120 TT |
15500 | /* Solib-related catchpoints. */ |
15501 | ops = &catch_solib_breakpoint_ops; | |
15502 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15503 | ops->insert_location = insert_catch_solib; |
15504 | ops->remove_location = remove_catch_solib; | |
15505 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15506 | ops->check_status = check_status_catch_solib; | |
15507 | ops->print_it = print_it_catch_solib; | |
15508 | ops->print_one = print_one_catch_solib; | |
15509 | ops->print_mention = print_mention_catch_solib; | |
15510 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15511 | |
15512 | ops = &dprintf_breakpoint_ops; | |
15513 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15514 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15515 | ops->resources_needed = bkpt_resources_needed; |
15516 | ops->print_it = bkpt_print_it; | |
15517 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15518 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15519 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15520 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15521 | } |
15522 | ||
8bfd80db YQ |
15523 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15524 | ||
15525 | static struct cmd_list_element *enablebreaklist = NULL; | |
15526 | ||
c906108c | 15527 | void |
fba45db2 | 15528 | _initialize_breakpoint (void) |
c906108c SS |
15529 | { |
15530 | struct cmd_list_element *c; | |
15531 | ||
2060206e PA |
15532 | initialize_breakpoint_ops (); |
15533 | ||
76727919 TT |
15534 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15535 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15536 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15537 | |
55aa24fb | 15538 | breakpoint_objfile_key |
43dce439 | 15539 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15540 | |
c906108c SS |
15541 | breakpoint_chain = 0; |
15542 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15543 | before a breakpoint is set. */ | |
15544 | breakpoint_count = 0; | |
15545 | ||
1042e4c0 SS |
15546 | tracepoint_count = 0; |
15547 | ||
1bedd215 AC |
15548 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15549 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15550 | Usage is `ignore N COUNT'.")); | |
c906108c | 15551 | |
1bedd215 | 15552 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15553 | Set commands to be executed when the given breakpoints are hit.\n\ |
15554 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15555 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15556 | (e.g. `5-7').\n\ | |
c906108c SS |
15557 | With no argument, the targeted breakpoint is the last one set.\n\ |
15558 | The commands themselves follow starting on the next line.\n\ | |
15559 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15560 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15561 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15562 | |
d55637df | 15563 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15564 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15565 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15566 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15567 | set_cmd_completer (c, condition_completer); |
c906108c | 15568 | |
1bedd215 | 15569 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15570 | Set a temporary breakpoint.\n\ |
c906108c SS |
15571 | Like \"break\" except the breakpoint is only temporary,\n\ |
15572 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15573 | by using \"enable delete\" on the breakpoint number.\n\ |
15574 | \n" | |
15575 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15576 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15577 | |
1bedd215 | 15578 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15579 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15580 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15581 | some target hardware may not have this support.\n\ |
15582 | \n" | |
15583 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15584 | set_cmd_completer (c, location_completer); |
c906108c | 15585 | |
1bedd215 | 15586 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15587 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15588 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15589 | so it will be deleted when hit.\n\ |
15590 | \n" | |
15591 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15592 | set_cmd_completer (c, location_completer); |
c906108c | 15593 | |
1bedd215 AC |
15594 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15595 | Enable some breakpoints.\n\ | |
c906108c SS |
15596 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15597 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15598 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15599 | With a subcommand you can enable temporarily."), |
c906108c | 15600 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15601 | |
15602 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15603 | ||
84951ab5 | 15604 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15605 | Enable some breakpoints.\n\ |
c906108c SS |
15606 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15607 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15608 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15609 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15610 | |
1a966eab AC |
15611 | add_cmd ("once", no_class, enable_once_command, _("\ |
15612 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15613 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15614 | &enablebreaklist); |
15615 | ||
1a966eab AC |
15616 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15617 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15618 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15619 | &enablebreaklist); |
15620 | ||
816338b5 SS |
15621 | add_cmd ("count", no_class, enable_count_command, _("\ |
15622 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15623 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15624 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
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 | &enablelist); |
15631 | ||
1a966eab AC |
15632 | add_cmd ("once", no_class, enable_once_command, _("\ |
15633 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15634 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15635 | &enablelist); |
15636 | ||
15637 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15638 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15639 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15640 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15641 | &enablelist); |
15642 | ||
1bedd215 AC |
15643 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15644 | Disable some breakpoints.\n\ | |
c906108c SS |
15645 | Arguments are breakpoint numbers with spaces in between.\n\ |
15646 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15647 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15648 | &disablelist, "disable ", 1, &cmdlist); |
15649 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15650 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15651 | |
1a966eab AC |
15652 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15653 | Disable some breakpoints.\n\ | |
c906108c SS |
15654 | Arguments are breakpoint numbers with spaces in between.\n\ |
15655 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15656 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15657 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15658 | &disablelist); |
15659 | ||
1bedd215 AC |
15660 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15661 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15662 | Arguments are breakpoint numbers with spaces in between.\n\ |
15663 | To delete all breakpoints, give no argument.\n\ | |
15664 | \n\ | |
15665 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15666 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15667 | &deletelist, "delete ", 1, &cmdlist); |
15668 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15669 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15670 | |
1a966eab AC |
15671 | add_cmd ("breakpoints", class_alias, 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\ | |
1a966eab | 15675 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15676 | &deletelist); |
15677 | ||
1bedd215 | 15678 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15679 | Clear breakpoint at specified location.\n\ |
15680 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15681 | \n\ |
15682 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15683 | is executing in.\n" |
15684 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15685 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15686 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15687 | |
1bedd215 | 15688 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15689 | Set breakpoint at specified location.\n" |
31e2b00f | 15690 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15691 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15692 | |
c906108c SS |
15693 | add_com_alias ("b", "break", class_run, 1); |
15694 | add_com_alias ("br", "break", class_run, 1); | |
15695 | add_com_alias ("bre", "break", class_run, 1); | |
15696 | add_com_alias ("brea", "break", class_run, 1); | |
15697 | ||
c906108c SS |
15698 | if (dbx_commands) |
15699 | { | |
1bedd215 AC |
15700 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15701 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15702 | &stoplist, "stop ", 1, &cmdlist); |
15703 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15704 | _("Break in function or address."), &stoplist); |
c5aa993b | 15705 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15706 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15707 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15708 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15709 | The \"Type\" column indicates one of:\n\ |
15710 | \tbreakpoint - normal breakpoint\n\ | |
15711 | \twatchpoint - watchpoint\n\ | |
15712 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15713 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15714 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15715 | address and file/line number respectively.\n\ |
15716 | \n\ | |
15717 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15718 | are set to the address of the last breakpoint listed unless the command\n\ |
15719 | is prefixed with \"server \".\n\n\ | |
c906108c | 15720 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15721 | breakpoint set.")); |
c906108c SS |
15722 | } |
15723 | ||
11db9430 | 15724 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15725 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15726 | The \"Type\" column indicates one of:\n\ |
15727 | \tbreakpoint - normal breakpoint\n\ | |
15728 | \twatchpoint - watchpoint\n\ | |
15729 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15730 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15731 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15732 | address and file/line number respectively.\n\ |
15733 | \n\ | |
15734 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15735 | are set to the address of the last breakpoint listed unless the command\n\ |
15736 | is prefixed with \"server \".\n\n\ | |
c906108c | 15737 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15738 | breakpoint set.")); |
c906108c | 15739 | |
6b04bdb7 MS |
15740 | add_info_alias ("b", "breakpoints", 1); |
15741 | ||
1a966eab AC |
15742 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15743 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15744 | The \"Type\" column indicates one of:\n\ |
15745 | \tbreakpoint - normal breakpoint\n\ | |
15746 | \twatchpoint - watchpoint\n\ | |
15747 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15748 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15749 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15750 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15751 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15752 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15753 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15754 | address and file/line number respectively.\n\ |
15755 | \n\ | |
15756 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15757 | are set to the address of the last breakpoint listed unless the command\n\ |
15758 | is prefixed with \"server \".\n\n\ | |
c906108c | 15759 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15760 | breakpoint set."), |
c906108c SS |
15761 | &maintenanceinfolist); |
15762 | ||
44feb3ce TT |
15763 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15764 | Set catchpoints to catch events."), | |
15765 | &catch_cmdlist, "catch ", | |
15766 | 0/*allow-unknown*/, &cmdlist); | |
15767 | ||
15768 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15769 | Set temporary catchpoints to catch events."), | |
15770 | &tcatch_cmdlist, "tcatch ", | |
15771 | 0/*allow-unknown*/, &cmdlist); | |
15772 | ||
44feb3ce TT |
15773 | add_catch_command ("fork", _("Catch calls to fork."), |
15774 | catch_fork_command_1, | |
a96d9b2e | 15775 | NULL, |
44feb3ce TT |
15776 | (void *) (uintptr_t) catch_fork_permanent, |
15777 | (void *) (uintptr_t) catch_fork_temporary); | |
15778 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15779 | catch_fork_command_1, | |
a96d9b2e | 15780 | NULL, |
44feb3ce TT |
15781 | (void *) (uintptr_t) catch_vfork_permanent, |
15782 | (void *) (uintptr_t) catch_vfork_temporary); | |
15783 | add_catch_command ("exec", _("Catch calls to exec."), | |
15784 | catch_exec_command_1, | |
a96d9b2e SDJ |
15785 | NULL, |
15786 | CATCH_PERMANENT, | |
15787 | CATCH_TEMPORARY); | |
edcc5120 TT |
15788 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15789 | Usage: catch load [REGEX]\n\ | |
15790 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15791 | catch_load_command_1, | |
15792 | NULL, | |
15793 | CATCH_PERMANENT, | |
15794 | CATCH_TEMPORARY); | |
15795 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15796 | Usage: catch unload [REGEX]\n\ | |
15797 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15798 | catch_unload_command_1, | |
15799 | NULL, | |
15800 | CATCH_PERMANENT, | |
15801 | CATCH_TEMPORARY); | |
c5aa993b | 15802 | |
1bedd215 AC |
15803 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15804 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15805 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15806 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15807 | an expression changes.\n\ |
15808 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15809 | the memory to which it refers.")); | |
65d12d83 | 15810 | set_cmd_completer (c, expression_completer); |
c906108c | 15811 | |
1bedd215 AC |
15812 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15813 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15814 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15815 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15816 | an expression is read.\n\ |
15817 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15818 | the memory to which it refers.")); | |
65d12d83 | 15819 | set_cmd_completer (c, expression_completer); |
c906108c | 15820 | |
1bedd215 AC |
15821 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15822 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15823 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15824 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15825 | an expression is either read or written.\n\ |
15826 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15827 | the memory to which it refers.")); | |
65d12d83 | 15828 | set_cmd_completer (c, expression_completer); |
c906108c | 15829 | |
11db9430 | 15830 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15831 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15832 | |
920d2a44 AC |
15833 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15834 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15835 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15836 | &can_use_hw_watchpoints, _("\ | |
15837 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15838 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15839 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15840 | such is available. (However, any hardware watchpoints that were\n\ | |
15841 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15842 | hardware.)"), |
15843 | NULL, | |
920d2a44 | 15844 | show_can_use_hw_watchpoints, |
85c07804 | 15845 | &setlist, &showlist); |
c906108c SS |
15846 | |
15847 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15848 | |
1042e4c0 SS |
15849 | /* Tracepoint manipulation commands. */ |
15850 | ||
15851 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15852 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15853 | \n" |
15854 | BREAK_ARGS_HELP ("trace") "\n\ | |
15855 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15856 | set_cmd_completer (c, location_completer); | |
15857 | ||
15858 | add_com_alias ("tp", "trace", class_alias, 0); | |
15859 | add_com_alias ("tr", "trace", class_alias, 1); | |
15860 | add_com_alias ("tra", "trace", class_alias, 1); | |
15861 | add_com_alias ("trac", "trace", class_alias, 1); | |
15862 | ||
7a697b8d | 15863 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15864 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15865 | \n" |
15866 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15867 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15868 | set_cmd_completer (c, location_completer); | |
15869 | ||
0fb4aa4b | 15870 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15871 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15872 | \n\ |
15873 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15874 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15875 | or -m MARKER_ID.\n\n\ | |
15876 | If a marker id is specified, probe the marker with that name. With\n\ | |
15877 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15878 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15879 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15880 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15881 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15882 | \n\ | |
15883 | CONDITION is a boolean expression.\n\ | |
629500fa | 15884 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15885 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15886 | conditions are different.\n\ | |
0fb4aa4b PA |
15887 | \n\ |
15888 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15889 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15890 | set_cmd_completer (c, location_completer); | |
15891 | ||
11db9430 | 15892 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15893 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15894 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15895 | last tracepoint set.")); | |
15896 | ||
15897 | add_info_alias ("tp", "tracepoints", 1); | |
15898 | ||
15899 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15900 | Delete specified tracepoints.\n\ | |
15901 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15902 | No argument means delete all tracepoints."), | |
15903 | &deletelist); | |
7e20dfcd | 15904 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15905 | |
15906 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15907 | Disable specified tracepoints.\n\ | |
15908 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15909 | No argument means disable all tracepoints."), | |
15910 | &disablelist); | |
15911 | deprecate_cmd (c, "disable"); | |
15912 | ||
15913 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15914 | Enable specified tracepoints.\n\ | |
15915 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15916 | No argument means enable all tracepoints."), | |
15917 | &enablelist); | |
15918 | deprecate_cmd (c, "enable"); | |
15919 | ||
15920 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15921 | Set the passcount for a tracepoint.\n\ | |
15922 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15923 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15924 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15925 | ||
6149aea9 PA |
15926 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15927 | _("Save breakpoint definitions as a script."), | |
15928 | &save_cmdlist, "save ", | |
15929 | 0/*allow-unknown*/, &cmdlist); | |
15930 | ||
15931 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15932 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15933 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15934 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15935 | session to restore them."), | |
15936 | &save_cmdlist); | |
15937 | set_cmd_completer (c, filename_completer); | |
15938 | ||
15939 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15940 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15941 | Use the 'source' command in another debug session to restore them."), |
15942 | &save_cmdlist); | |
1042e4c0 SS |
15943 | set_cmd_completer (c, filename_completer); |
15944 | ||
6149aea9 PA |
15945 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15946 | deprecate_cmd (c, "save tracepoints"); | |
15947 | ||
1bedd215 | 15948 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15949 | Breakpoint specific settings\n\ |
15950 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15951 | pending breakpoint behavior"), |
fa8d40ab JJ |
15952 | &breakpoint_set_cmdlist, "set breakpoint ", |
15953 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15954 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15955 | Breakpoint specific settings\n\ |
15956 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15957 | pending breakpoint behavior"), |
fa8d40ab JJ |
15958 | &breakpoint_show_cmdlist, "show breakpoint ", |
15959 | 0/*allow-unknown*/, &showlist); | |
15960 | ||
7915a72c AC |
15961 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15962 | &pending_break_support, _("\ | |
15963 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15964 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15965 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15966 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15967 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15968 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15969 | NULL, |
920d2a44 | 15970 | show_pending_break_support, |
6e1d7d6c AC |
15971 | &breakpoint_set_cmdlist, |
15972 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15973 | |
15974 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15975 | |
15976 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15977 | &automatic_hardware_breakpoints, _("\ | |
15978 | Set automatic usage of hardware breakpoints."), _("\ | |
15979 | Show automatic usage of hardware breakpoints."), _("\ | |
15980 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15981 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15982 | a warning will be emitted for such breakpoints."), | |
15983 | NULL, | |
15984 | show_automatic_hardware_breakpoints, | |
15985 | &breakpoint_set_cmdlist, | |
15986 | &breakpoint_show_cmdlist); | |
74960c60 | 15987 | |
a25a5a45 PA |
15988 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15989 | &always_inserted_mode, _("\ | |
74960c60 VP |
15990 | Set mode for inserting breakpoints."), _("\ |
15991 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15992 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15993 | they're created, kept inserted even when execution stops, and removed\n\ | |
15994 | only when the user deletes them. When this mode is off (the default),\n\ | |
15995 | breakpoints are inserted only when execution continues, and removed\n\ | |
15996 | when execution stops."), | |
72d0e2c5 YQ |
15997 | NULL, |
15998 | &show_always_inserted_mode, | |
15999 | &breakpoint_set_cmdlist, | |
16000 | &breakpoint_show_cmdlist); | |
f1310107 | 16001 | |
b775012e LM |
16002 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16003 | condition_evaluation_enums, | |
16004 | &condition_evaluation_mode_1, _("\ | |
16005 | Set mode of breakpoint condition evaluation."), _("\ | |
16006 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16007 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16008 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16009 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16010 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16011 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16012 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16013 | be set to \"gdb\""), | |
16014 | &set_condition_evaluation_mode, | |
16015 | &show_condition_evaluation_mode, | |
16016 | &breakpoint_set_cmdlist, | |
16017 | &breakpoint_show_cmdlist); | |
16018 | ||
f1310107 TJB |
16019 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16020 | Set a breakpoint for an address range.\n\ | |
16021 | break-range START-LOCATION, END-LOCATION\n\ | |
16022 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16023 | LINENUM, for that line in the current file,\n\ | |
16024 | FILE:LINENUM, for that line in that file,\n\ | |
16025 | +OFFSET, for that number of lines after the current line\n\ | |
16026 | or the start of the range\n\ | |
16027 | FUNCTION, for the first line in that function,\n\ | |
16028 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16029 | *ADDRESS, for the instruction at that address.\n\ | |
16030 | \n\ | |
16031 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16032 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16033 | range (including START-LOCATION and END-LOCATION).")); | |
16034 | ||
e7e0cddf | 16035 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16036 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16037 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16038 | location may be a linespec, explicit, or address location.\n" |
16039 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16040 | set_cmd_completer (c, location_completer); |
16041 | ||
16042 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16043 | dprintf_style_enums, &dprintf_style, _("\ | |
16044 | Set the style of usage for dynamic printf."), _("\ | |
16045 | Show the style of usage for dynamic printf."), _("\ | |
16046 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16047 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16048 | console, as with the \"printf\" command.\n\ | |
16049 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16050 | program; by default printf(), but you can choose a different function or\n\ | |
16051 | output stream by setting dprintf-function and dprintf-channel."), | |
16052 | update_dprintf_commands, NULL, | |
16053 | &setlist, &showlist); | |
16054 | ||
16055 | dprintf_function = xstrdup ("printf"); | |
16056 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16057 | &dprintf_function, _("\ | |
16058 | Set the function to use for dynamic printf"), _("\ | |
16059 | Show the function to use for dynamic printf"), NULL, | |
16060 | update_dprintf_commands, NULL, | |
16061 | &setlist, &showlist); | |
16062 | ||
16063 | dprintf_channel = xstrdup (""); | |
16064 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16065 | &dprintf_channel, _("\ | |
16066 | Set the channel to use for dynamic printf"), _("\ | |
16067 | Show the channel to use for dynamic printf"), NULL, | |
16068 | update_dprintf_commands, NULL, | |
16069 | &setlist, &showlist); | |
16070 | ||
d3ce09f5 SS |
16071 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16072 | &disconnected_dprintf, _("\ | |
16073 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16074 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16075 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16076 | even if GDB disconnects or detaches from the target."), | |
16077 | NULL, | |
16078 | NULL, | |
16079 | &setlist, &showlist); | |
16080 | ||
16081 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16082 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16083 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16084 | ||
765dc015 | 16085 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16086 | |
76727919 TT |
16087 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16088 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16089 | } |