Commit | Line | Data |
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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 | { | |
a25a5a45 PA |
403 | if (always_inserted_mode) |
404 | { | |
405 | /* The user wants breakpoints inserted even if all threads | |
406 | are stopped. */ | |
407 | return 1; | |
408 | } | |
409 | ||
b57bacec PA |
410 | if (threads_are_executing ()) |
411 | return 1; | |
372316f1 PA |
412 | |
413 | /* Don't remove breakpoints yet if, even though all threads are | |
414 | stopped, we still have events to process. */ | |
08036331 | 415 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
416 | if (tp->resumed |
417 | && tp->suspend.waitstatus_pending_p) | |
418 | return 1; | |
a25a5a45 PA |
419 | } |
420 | return 0; | |
33e5cbd6 | 421 | } |
765dc015 | 422 | |
b775012e LM |
423 | static const char condition_evaluation_both[] = "host or target"; |
424 | ||
425 | /* Modes for breakpoint condition evaluation. */ | |
426 | static const char condition_evaluation_auto[] = "auto"; | |
427 | static const char condition_evaluation_host[] = "host"; | |
428 | static const char condition_evaluation_target[] = "target"; | |
429 | static const char *const condition_evaluation_enums[] = { | |
430 | condition_evaluation_auto, | |
431 | condition_evaluation_host, | |
432 | condition_evaluation_target, | |
433 | NULL | |
434 | }; | |
435 | ||
436 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
437 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
438 | ||
439 | /* Global that we use to display information to the user (gets its value from | |
440 | condition_evaluation_mode_1. */ | |
441 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
442 | ||
443 | /* Translate a condition evaluation mode MODE into either "host" | |
444 | or "target". This is used mostly to translate from "auto" to the | |
445 | real setting that is being used. It returns the translated | |
446 | evaluation mode. */ | |
447 | ||
448 | static const char * | |
449 | translate_condition_evaluation_mode (const char *mode) | |
450 | { | |
451 | if (mode == condition_evaluation_auto) | |
452 | { | |
453 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
454 | return condition_evaluation_target; | |
455 | else | |
456 | return condition_evaluation_host; | |
457 | } | |
458 | else | |
459 | return mode; | |
460 | } | |
461 | ||
462 | /* Discovers what condition_evaluation_auto translates to. */ | |
463 | ||
464 | static const char * | |
465 | breakpoint_condition_evaluation_mode (void) | |
466 | { | |
467 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
468 | } | |
469 | ||
470 | /* Return true if GDB should evaluate breakpoint conditions or false | |
471 | otherwise. */ | |
472 | ||
473 | static int | |
474 | gdb_evaluates_breakpoint_condition_p (void) | |
475 | { | |
476 | const char *mode = breakpoint_condition_evaluation_mode (); | |
477 | ||
478 | return (mode == condition_evaluation_host); | |
479 | } | |
480 | ||
c906108c SS |
481 | /* Are we executing breakpoint commands? */ |
482 | static int executing_breakpoint_commands; | |
483 | ||
c02f5703 MS |
484 | /* Are overlay event breakpoints enabled? */ |
485 | static int overlay_events_enabled; | |
486 | ||
e09342b5 TJB |
487 | /* See description in breakpoint.h. */ |
488 | int target_exact_watchpoints = 0; | |
489 | ||
c906108c | 490 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 491 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 492 | current breakpoint. */ |
c906108c | 493 | |
5c44784c | 494 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 495 | |
5c44784c JM |
496 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
497 | for (B = breakpoint_chain; \ | |
498 | B ? (TMP=B->next, 1): 0; \ | |
499 | B = TMP) | |
c906108c | 500 | |
4a64f543 MS |
501 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
502 | not provided so update_global_location_list must not be called | |
503 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 504 | |
876fa593 | 505 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
506 | for (BP_TMP = bp_locations; \ |
507 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 508 | BP_TMP++) |
7cc221ef | 509 | |
b775012e LM |
510 | /* Iterates through locations with address ADDRESS for the currently selected |
511 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
512 | to where the loop should start from. | |
513 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
514 | appropriate location to start with. */ | |
515 | ||
516 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
517 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
518 | BP_LOCP_TMP = BP_LOCP_START; \ | |
519 | BP_LOCP_START \ | |
f5336ca5 | 520 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
521 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
522 | BP_LOCP_TMP++) | |
523 | ||
1042e4c0 SS |
524 | /* Iterator for tracepoints only. */ |
525 | ||
526 | #define ALL_TRACEPOINTS(B) \ | |
527 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 528 | if (is_tracepoint (B)) |
1042e4c0 | 529 | |
7cc221ef | 530 | /* Chains of all breakpoints defined. */ |
c906108c SS |
531 | |
532 | struct breakpoint *breakpoint_chain; | |
533 | ||
f5336ca5 | 534 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 535 | |
f5336ca5 | 536 | static struct bp_location **bp_locations; |
876fa593 | 537 | |
f5336ca5 | 538 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 539 | |
f5336ca5 | 540 | static unsigned bp_locations_count; |
876fa593 | 541 | |
4a64f543 | 542 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 543 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 544 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 545 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 546 | an address you need to read. */ |
876fa593 | 547 | |
f5336ca5 | 548 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 549 | |
4a64f543 MS |
550 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
551 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
552 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
553 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 554 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 555 | |
f5336ca5 | 556 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 557 | |
4a64f543 | 558 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
559 | from the bp_locations array, but for which a hit may still be |
560 | reported by a target. */ | |
1123588c | 561 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 562 | |
c906108c SS |
563 | /* Number of last breakpoint made. */ |
564 | ||
95a42b64 TT |
565 | static int breakpoint_count; |
566 | ||
86b17b60 PA |
567 | /* The value of `breakpoint_count' before the last command that |
568 | created breakpoints. If the last (break-like) command created more | |
569 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
570 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
571 | static int prev_breakpoint_count; | |
c906108c | 572 | |
1042e4c0 SS |
573 | /* Number of last tracepoint made. */ |
574 | ||
95a42b64 | 575 | static int tracepoint_count; |
1042e4c0 | 576 | |
6149aea9 PA |
577 | static struct cmd_list_element *breakpoint_set_cmdlist; |
578 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 579 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 580 | |
badd37ce SDJ |
581 | /* See declaration at breakpoint.h. */ |
582 | ||
583 | struct breakpoint * | |
584 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
585 | void *user_data) | |
586 | { | |
587 | struct breakpoint *b = NULL; | |
588 | ||
589 | ALL_BREAKPOINTS (b) | |
590 | { | |
591 | if (func (b, user_data) != 0) | |
592 | break; | |
593 | } | |
594 | ||
595 | return b; | |
596 | } | |
597 | ||
468d015d JJ |
598 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
599 | static int | |
600 | breakpoint_enabled (struct breakpoint *b) | |
601 | { | |
0d381245 | 602 | return (b->enable_state == bp_enabled); |
468d015d JJ |
603 | } |
604 | ||
c906108c SS |
605 | /* Set breakpoint count to NUM. */ |
606 | ||
95a42b64 | 607 | static void |
fba45db2 | 608 | set_breakpoint_count (int num) |
c906108c | 609 | { |
86b17b60 | 610 | prev_breakpoint_count = breakpoint_count; |
c906108c | 611 | breakpoint_count = num; |
4fa62494 | 612 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
613 | } |
614 | ||
86b17b60 PA |
615 | /* Used by `start_rbreak_breakpoints' below, to record the current |
616 | breakpoint count before "rbreak" creates any breakpoint. */ | |
617 | static int rbreak_start_breakpoint_count; | |
618 | ||
95a42b64 TT |
619 | /* Called at the start an "rbreak" command to record the first |
620 | breakpoint made. */ | |
86b17b60 | 621 | |
c80049d3 | 622 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 623 | { |
86b17b60 | 624 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
625 | } |
626 | ||
627 | /* Called at the end of an "rbreak" command to record the last | |
628 | breakpoint made. */ | |
86b17b60 | 629 | |
c80049d3 | 630 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 631 | { |
86b17b60 | 632 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
633 | } |
634 | ||
4a64f543 | 635 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
636 | |
637 | void | |
fba45db2 | 638 | clear_breakpoint_hit_counts (void) |
c906108c SS |
639 | { |
640 | struct breakpoint *b; | |
641 | ||
642 | ALL_BREAKPOINTS (b) | |
643 | b->hit_count = 0; | |
644 | } | |
645 | ||
c906108c | 646 | \f |
48cb2d85 VP |
647 | /* Return the breakpoint with the specified number, or NULL |
648 | if the number does not refer to an existing breakpoint. */ | |
649 | ||
650 | struct breakpoint * | |
651 | get_breakpoint (int num) | |
652 | { | |
653 | struct breakpoint *b; | |
654 | ||
655 | ALL_BREAKPOINTS (b) | |
656 | if (b->number == num) | |
657 | return b; | |
658 | ||
659 | return NULL; | |
660 | } | |
5c44784c | 661 | |
c906108c | 662 | \f |
adc36818 | 663 | |
b775012e LM |
664 | /* Mark locations as "conditions have changed" in case the target supports |
665 | evaluating conditions on its side. */ | |
666 | ||
667 | static void | |
668 | mark_breakpoint_modified (struct breakpoint *b) | |
669 | { | |
670 | struct bp_location *loc; | |
671 | ||
672 | /* This is only meaningful if the target is | |
673 | evaluating conditions and if the user has | |
674 | opted for condition evaluation on the target's | |
675 | side. */ | |
676 | if (gdb_evaluates_breakpoint_condition_p () | |
677 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
678 | return; | |
679 | ||
680 | if (!is_breakpoint (b)) | |
681 | return; | |
682 | ||
683 | for (loc = b->loc; loc; loc = loc->next) | |
684 | loc->condition_changed = condition_modified; | |
685 | } | |
686 | ||
687 | /* Mark location as "conditions have changed" in case the target supports | |
688 | evaluating conditions on its side. */ | |
689 | ||
690 | static void | |
691 | mark_breakpoint_location_modified (struct bp_location *loc) | |
692 | { | |
693 | /* This is only meaningful if the target is | |
694 | evaluating conditions and if the user has | |
695 | opted for condition evaluation on the target's | |
696 | side. */ | |
697 | if (gdb_evaluates_breakpoint_condition_p () | |
698 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
699 | ||
700 | return; | |
701 | ||
702 | if (!is_breakpoint (loc->owner)) | |
703 | return; | |
704 | ||
705 | loc->condition_changed = condition_modified; | |
706 | } | |
707 | ||
708 | /* Sets the condition-evaluation mode using the static global | |
709 | condition_evaluation_mode. */ | |
710 | ||
711 | static void | |
eb4c3f4a | 712 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
713 | struct cmd_list_element *c) |
714 | { | |
b775012e LM |
715 | const char *old_mode, *new_mode; |
716 | ||
717 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
718 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
719 | { | |
720 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
721 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
722 | "Using host evaluation mode instead.")); | |
723 | return; | |
724 | } | |
725 | ||
726 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
727 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
728 | ||
abf1152a JK |
729 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
730 | settings was "auto". */ | |
731 | condition_evaluation_mode = condition_evaluation_mode_1; | |
732 | ||
b775012e LM |
733 | /* Only update the mode if the user picked a different one. */ |
734 | if (new_mode != old_mode) | |
735 | { | |
736 | struct bp_location *loc, **loc_tmp; | |
737 | /* If the user switched to a different evaluation mode, we | |
738 | need to synch the changes with the target as follows: | |
739 | ||
740 | "host" -> "target": Send all (valid) conditions to the target. | |
741 | "target" -> "host": Remove all the conditions from the target. | |
742 | */ | |
743 | ||
b775012e LM |
744 | if (new_mode == condition_evaluation_target) |
745 | { | |
746 | /* Mark everything modified and synch conditions with the | |
747 | target. */ | |
748 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
749 | mark_breakpoint_location_modified (loc); | |
750 | } | |
751 | else | |
752 | { | |
753 | /* Manually mark non-duplicate locations to synch conditions | |
754 | with the target. We do this to remove all the conditions the | |
755 | target knows about. */ | |
756 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
757 | if (is_breakpoint (loc->owner) && loc->inserted) | |
758 | loc->needs_update = 1; | |
759 | } | |
760 | ||
761 | /* Do the update. */ | |
44702360 | 762 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
763 | } |
764 | ||
765 | return; | |
766 | } | |
767 | ||
768 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
769 | what "auto" is translating to. */ | |
770 | ||
771 | static void | |
772 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
773 | struct cmd_list_element *c, const char *value) | |
774 | { | |
775 | if (condition_evaluation_mode == condition_evaluation_auto) | |
776 | fprintf_filtered (file, | |
777 | _("Breakpoint condition evaluation " | |
778 | "mode is %s (currently %s).\n"), | |
779 | value, | |
780 | breakpoint_condition_evaluation_mode ()); | |
781 | else | |
782 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
783 | value); | |
784 | } | |
785 | ||
786 | /* A comparison function for bp_location AP and BP that is used by | |
787 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 788 | the more general bp_locations_compare function. */ |
b775012e LM |
789 | |
790 | static int | |
f5336ca5 | 791 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 792 | { |
9a3c8263 SM |
793 | const struct bp_location *a = *(const struct bp_location **) ap; |
794 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
795 | |
796 | if (a->address == b->address) | |
797 | return 0; | |
798 | else | |
799 | return ((a->address > b->address) - (a->address < b->address)); | |
800 | } | |
801 | ||
802 | /* Helper function to skip all bp_locations with addresses | |
803 | less than ADDRESS. It returns the first bp_location that | |
804 | is greater than or equal to ADDRESS. If none is found, just | |
805 | return NULL. */ | |
806 | ||
807 | static struct bp_location ** | |
808 | get_first_locp_gte_addr (CORE_ADDR address) | |
809 | { | |
810 | struct bp_location dummy_loc; | |
811 | struct bp_location *dummy_locp = &dummy_loc; | |
812 | struct bp_location **locp_found = NULL; | |
813 | ||
814 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
815 | dummy_loc.address = address; |
816 | ||
817 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 818 | locp_found = ((struct bp_location **) |
f5336ca5 | 819 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 820 | sizeof (struct bp_location **), |
f5336ca5 | 821 | bp_locations_compare_addrs)); |
b775012e LM |
822 | |
823 | /* Nothing was found, nothing left to do. */ | |
824 | if (locp_found == NULL) | |
825 | return NULL; | |
826 | ||
827 | /* We may have found a location that is at ADDRESS but is not the first in the | |
828 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 829 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
830 | && (*(locp_found - 1))->address == address) |
831 | locp_found--; | |
832 | ||
833 | return locp_found; | |
834 | } | |
835 | ||
adc36818 | 836 | void |
7a26bd4d | 837 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
838 | int from_tty) |
839 | { | |
3a5c3e22 PA |
840 | xfree (b->cond_string); |
841 | b->cond_string = NULL; | |
adc36818 | 842 | |
3a5c3e22 | 843 | if (is_watchpoint (b)) |
adc36818 | 844 | { |
3a5c3e22 PA |
845 | struct watchpoint *w = (struct watchpoint *) b; |
846 | ||
4d01a485 | 847 | w->cond_exp.reset (); |
3a5c3e22 PA |
848 | } |
849 | else | |
850 | { | |
851 | struct bp_location *loc; | |
852 | ||
853 | for (loc = b->loc; loc; loc = loc->next) | |
854 | { | |
4d01a485 | 855 | loc->cond.reset (); |
b775012e LM |
856 | |
857 | /* No need to free the condition agent expression | |
858 | bytecode (if we have one). We will handle this | |
859 | when we go through update_global_location_list. */ | |
3a5c3e22 | 860 | } |
adc36818 | 861 | } |
adc36818 PM |
862 | |
863 | if (*exp == 0) | |
864 | { | |
865 | if (from_tty) | |
866 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
867 | } | |
868 | else | |
869 | { | |
bbc13ae3 | 870 | const char *arg = exp; |
cc59ec59 | 871 | |
adc36818 PM |
872 | /* I don't know if it matters whether this is the string the user |
873 | typed in or the decompiled expression. */ | |
874 | b->cond_string = xstrdup (arg); | |
875 | b->condition_not_parsed = 0; | |
876 | ||
877 | if (is_watchpoint (b)) | |
878 | { | |
3a5c3e22 PA |
879 | struct watchpoint *w = (struct watchpoint *) b; |
880 | ||
aee1fcdf | 881 | innermost_block.reset (); |
adc36818 | 882 | arg = exp; |
1bb9788d | 883 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
884 | if (*arg) |
885 | error (_("Junk at end of expression")); | |
aee1fcdf | 886 | w->cond_exp_valid_block = innermost_block.block (); |
adc36818 PM |
887 | } |
888 | else | |
889 | { | |
3a5c3e22 PA |
890 | struct bp_location *loc; |
891 | ||
adc36818 PM |
892 | for (loc = b->loc; loc; loc = loc->next) |
893 | { | |
894 | arg = exp; | |
895 | loc->cond = | |
1bb9788d TT |
896 | parse_exp_1 (&arg, loc->address, |
897 | block_for_pc (loc->address), 0); | |
adc36818 PM |
898 | if (*arg) |
899 | error (_("Junk at end of expression")); | |
900 | } | |
901 | } | |
902 | } | |
b775012e LM |
903 | mark_breakpoint_modified (b); |
904 | ||
76727919 | 905 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
906 | } |
907 | ||
d55637df TT |
908 | /* Completion for the "condition" command. */ |
909 | ||
eb3ff9a5 | 910 | static void |
6f937416 | 911 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 912 | completion_tracker &tracker, |
6f937416 | 913 | const char *text, const char *word) |
d55637df | 914 | { |
6f937416 | 915 | const char *space; |
d55637df | 916 | |
f1735a53 TT |
917 | text = skip_spaces (text); |
918 | space = skip_to_space (text); | |
d55637df TT |
919 | if (*space == '\0') |
920 | { | |
921 | int len; | |
922 | struct breakpoint *b; | |
d55637df TT |
923 | |
924 | if (text[0] == '$') | |
925 | { | |
926 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
927 | if (!isdigit (text[1])) |
928 | complete_internalvar (tracker, &text[1]); | |
929 | return; | |
d55637df TT |
930 | } |
931 | ||
932 | /* We're completing the breakpoint number. */ | |
933 | len = strlen (text); | |
934 | ||
935 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
936 | { |
937 | char number[50]; | |
938 | ||
939 | xsnprintf (number, sizeof (number), "%d", b->number); | |
940 | ||
941 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
942 | { |
943 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
944 | tracker.add_completion (std::move (copy)); | |
945 | } | |
58ce7251 | 946 | } |
d55637df | 947 | |
eb3ff9a5 | 948 | return; |
d55637df TT |
949 | } |
950 | ||
951 | /* We're completing the expression part. */ | |
f1735a53 | 952 | text = skip_spaces (space); |
eb3ff9a5 | 953 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
954 | } |
955 | ||
c906108c SS |
956 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
957 | ||
958 | static void | |
0b39b52e | 959 | condition_command (const char *arg, int from_tty) |
c906108c | 960 | { |
52f0bd74 | 961 | struct breakpoint *b; |
0b39b52e | 962 | const char *p; |
52f0bd74 | 963 | int bnum; |
c906108c SS |
964 | |
965 | if (arg == 0) | |
e2e0b3e5 | 966 | error_no_arg (_("breakpoint number")); |
c906108c SS |
967 | |
968 | p = arg; | |
969 | bnum = get_number (&p); | |
5c44784c | 970 | if (bnum == 0) |
8a3fe4f8 | 971 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
972 | |
973 | ALL_BREAKPOINTS (b) | |
974 | if (b->number == bnum) | |
2f069f6f | 975 | { |
6dddc817 DE |
976 | /* Check if this breakpoint has a "stop" method implemented in an |
977 | extension language. This method and conditions entered into GDB | |
978 | from the CLI are mutually exclusive. */ | |
979 | const struct extension_language_defn *extlang | |
980 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
981 | ||
982 | if (extlang != NULL) | |
983 | { | |
984 | error (_("Only one stop condition allowed. There is currently" | |
985 | " a %s stop condition defined for this breakpoint."), | |
986 | ext_lang_capitalized_name (extlang)); | |
987 | } | |
2566ad2d | 988 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
989 | |
990 | if (is_breakpoint (b)) | |
44702360 | 991 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 992 | |
2f069f6f JB |
993 | return; |
994 | } | |
c906108c | 995 | |
8a3fe4f8 | 996 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
997 | } |
998 | ||
a7bdde9e VP |
999 | /* Check that COMMAND do not contain commands that are suitable |
1000 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1001 | Throw if any such commands is found. */ |
1002 | ||
a7bdde9e VP |
1003 | static void |
1004 | check_no_tracepoint_commands (struct command_line *commands) | |
1005 | { | |
1006 | struct command_line *c; | |
cc59ec59 | 1007 | |
a7bdde9e VP |
1008 | for (c = commands; c; c = c->next) |
1009 | { | |
a7bdde9e | 1010 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1011 | error (_("The 'while-stepping' command can " |
1012 | "only be used for tracepoints")); | |
a7bdde9e | 1013 | |
12973681 TT |
1014 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1015 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1016 | |
1017 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1018 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1019 | command directly. */ |
1020 | if (strstr (c->line, "collect ") == c->line) | |
1021 | error (_("The 'collect' command can only be used for tracepoints")); | |
1022 | ||
51661e93 VP |
1023 | if (strstr (c->line, "teval ") == c->line) |
1024 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1025 | } |
1026 | } | |
1027 | ||
c1fc2657 | 1028 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1029 | { |
c1fc2657 | 1030 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1031 | }; |
1032 | ||
d77f58be SS |
1033 | /* Encapsulate tests for different types of tracepoints. */ |
1034 | ||
3b0871f4 SM |
1035 | static bool |
1036 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1037 | { |
1038 | return (type == bp_tracepoint | |
1039 | || type == bp_fast_tracepoint | |
1040 | || type == bp_static_tracepoint); | |
1041 | } | |
1042 | ||
3b0871f4 SM |
1043 | static bool |
1044 | is_longjmp_type (bptype type) | |
1045 | { | |
1046 | return type == bp_longjmp || type == bp_exception; | |
1047 | } | |
1048 | ||
a7bdde9e | 1049 | int |
d77f58be | 1050 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1051 | { |
d9b3f62e | 1052 | return is_tracepoint_type (b->type); |
a7bdde9e | 1053 | } |
d9b3f62e | 1054 | |
a5e364af SM |
1055 | /* Factory function to create an appropriate instance of breakpoint given |
1056 | TYPE. */ | |
1057 | ||
1058 | static std::unique_ptr<breakpoint> | |
1059 | new_breakpoint_from_type (bptype type) | |
1060 | { | |
1061 | breakpoint *b; | |
1062 | ||
1063 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1064 | b = new tracepoint (); |
3b0871f4 | 1065 | else if (is_longjmp_type (type)) |
c1fc2657 | 1066 | b = new longjmp_breakpoint (); |
a5e364af SM |
1067 | else |
1068 | b = new breakpoint (); | |
1069 | ||
1070 | return std::unique_ptr<breakpoint> (b); | |
1071 | } | |
1072 | ||
e5dd4106 | 1073 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1074 | breakpoint. This function will throw an exception if a problem is |
1075 | found. */ | |
48cb2d85 | 1076 | |
95a42b64 TT |
1077 | static void |
1078 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1079 | struct command_line *commands) | |
48cb2d85 | 1080 | { |
d77f58be | 1081 | if (is_tracepoint (b)) |
a7bdde9e | 1082 | { |
c9a6ce02 | 1083 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1084 | struct command_line *c; |
1085 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1086 | |
1087 | /* Reset the while-stepping step count. The previous commands | |
1088 | might have included a while-stepping action, while the new | |
1089 | ones might not. */ | |
1090 | t->step_count = 0; | |
1091 | ||
1092 | /* We need to verify that each top-level element of commands is | |
1093 | valid for tracepoints, that there's at most one | |
1094 | while-stepping element, and that the while-stepping's body | |
1095 | has valid tracing commands excluding nested while-stepping. | |
1096 | We also need to validate the tracepoint action line in the | |
1097 | context of the tracepoint --- validate_actionline actually | |
1098 | has side effects, like setting the tracepoint's | |
1099 | while-stepping STEP_COUNT, in addition to checking if the | |
1100 | collect/teval actions parse and make sense in the | |
1101 | tracepoint's context. */ | |
a7bdde9e VP |
1102 | for (c = commands; c; c = c->next) |
1103 | { | |
a7bdde9e VP |
1104 | if (c->control_type == while_stepping_control) |
1105 | { | |
1106 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1107 | error (_("The 'while-stepping' command " |
1108 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1109 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1110 | error (_("The 'while-stepping' command " |
1111 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1112 | |
1113 | if (while_stepping) | |
3e43a32a MS |
1114 | error (_("The 'while-stepping' command " |
1115 | "can be used only once")); | |
a7bdde9e VP |
1116 | else |
1117 | while_stepping = c; | |
1118 | } | |
c9a6ce02 PA |
1119 | |
1120 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1121 | } |
1122 | if (while_stepping) | |
1123 | { | |
1124 | struct command_line *c2; | |
1125 | ||
12973681 TT |
1126 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1127 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1128 | for (; c2; c2 = c2->next) |
1129 | { | |
a7bdde9e VP |
1130 | if (c2->control_type == while_stepping_control) |
1131 | error (_("The 'while-stepping' command cannot be nested")); | |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | else | |
1136 | { | |
1137 | check_no_tracepoint_commands (commands); | |
1138 | } | |
95a42b64 TT |
1139 | } |
1140 | ||
0fb4aa4b PA |
1141 | /* Return a vector of all the static tracepoints set at ADDR. The |
1142 | caller is responsible for releasing the vector. */ | |
1143 | ||
f51e0e20 | 1144 | std::vector<breakpoint *> |
0fb4aa4b PA |
1145 | static_tracepoints_here (CORE_ADDR addr) |
1146 | { | |
1147 | struct breakpoint *b; | |
f51e0e20 | 1148 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1149 | struct bp_location *loc; |
1150 | ||
1151 | ALL_BREAKPOINTS (b) | |
1152 | if (b->type == bp_static_tracepoint) | |
1153 | { | |
1154 | for (loc = b->loc; loc; loc = loc->next) | |
1155 | if (loc->address == addr) | |
f51e0e20 | 1156 | found.push_back (b); |
0fb4aa4b PA |
1157 | } |
1158 | ||
1159 | return found; | |
1160 | } | |
1161 | ||
95a42b64 | 1162 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1163 | validate that only allowed commands are included. */ |
95a42b64 TT |
1164 | |
1165 | void | |
4a64f543 | 1166 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1167 | counted_command_line &&commands) |
95a42b64 | 1168 | { |
93921405 | 1169 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1170 | |
d1b0a7bf | 1171 | b->commands = std::move (commands); |
76727919 | 1172 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1173 | } |
1174 | ||
45a43567 TT |
1175 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1176 | is not the same as the "silent" that may appear in the breakpoint's | |
1177 | commands. */ | |
1178 | ||
1179 | void | |
1180 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1181 | { | |
1182 | int old_silent = b->silent; | |
1183 | ||
1184 | b->silent = silent; | |
1185 | if (old_silent != silent) | |
76727919 | 1186 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1187 | } |
1188 | ||
1189 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1190 | breakpoint work for any thread. */ | |
1191 | ||
1192 | void | |
1193 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1194 | { | |
1195 | int old_thread = b->thread; | |
1196 | ||
1197 | b->thread = thread; | |
1198 | if (old_thread != thread) | |
76727919 | 1199 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1200 | } |
1201 | ||
1202 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1203 | breakpoint work for any task. */ | |
1204 | ||
1205 | void | |
1206 | breakpoint_set_task (struct breakpoint *b, int task) | |
1207 | { | |
1208 | int old_task = b->task; | |
1209 | ||
1210 | b->task = task; | |
1211 | if (old_task != task) | |
76727919 | 1212 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1213 | } |
1214 | ||
95a42b64 | 1215 | static void |
896b6bda | 1216 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1217 | struct command_line *control) |
95a42b64 | 1218 | { |
d1b0a7bf | 1219 | counted_command_line cmd; |
999700cd PW |
1220 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1221 | NULL after the call to read_command_lines if the user provides an empty | |
1222 | list of command by just typing "end". */ | |
1223 | bool cmd_read = false; | |
95a42b64 | 1224 | |
896b6bda PA |
1225 | std::string new_arg; |
1226 | ||
95a42b64 TT |
1227 | if (arg == NULL || !*arg) |
1228 | { | |
86b17b60 | 1229 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1230 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1231 | breakpoint_count); | |
95a42b64 | 1232 | else if (breakpoint_count > 0) |
896b6bda | 1233 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1234 | arg = new_arg.c_str (); |
1235 | } | |
1236 | ||
1237 | map_breakpoint_numbers | |
1238 | (arg, [&] (breakpoint *b) | |
1239 | { | |
999700cd | 1240 | if (!cmd_read) |
48649e1b | 1241 | { |
999700cd | 1242 | gdb_assert (cmd == NULL); |
48649e1b | 1243 | if (control != NULL) |
12973681 | 1244 | cmd = control->body_list_0; |
48649e1b TT |
1245 | else |
1246 | { | |
81b1e71c TT |
1247 | std::string str |
1248 | = string_printf (_("Type commands for breakpoint(s) " | |
1249 | "%s, one per line."), | |
1250 | arg); | |
48649e1b | 1251 | |
60b3cef2 TT |
1252 | auto do_validate = [=] (const char *line) |
1253 | { | |
1254 | validate_actionline (line, b); | |
1255 | }; | |
1256 | gdb::function_view<void (const char *)> validator; | |
1257 | if (is_tracepoint (b)) | |
1258 | validator = do_validate; | |
1259 | ||
1260 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1261 | } |
999700cd | 1262 | cmd_read = true; |
48649e1b TT |
1263 | } |
1264 | ||
1265 | /* If a breakpoint was on the list more than once, we don't need to | |
1266 | do anything. */ | |
1267 | if (b->commands != cmd) | |
1268 | { | |
d1b0a7bf | 1269 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1270 | b->commands = cmd; |
76727919 | 1271 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1272 | } |
1273 | }); | |
95a42b64 TT |
1274 | } |
1275 | ||
1276 | static void | |
0b39b52e | 1277 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1278 | { |
1279 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1280 | } |
40c03ae8 EZ |
1281 | |
1282 | /* Like commands_command, but instead of reading the commands from | |
1283 | input stream, takes them from an already parsed command structure. | |
1284 | ||
1285 | This is used by cli-script.c to DTRT with breakpoint commands | |
1286 | that are part of if and while bodies. */ | |
1287 | enum command_control_type | |
896b6bda | 1288 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1289 | { |
95a42b64 TT |
1290 | commands_command_1 (arg, 0, cmd); |
1291 | return simple_control; | |
40c03ae8 | 1292 | } |
876fa593 JK |
1293 | |
1294 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1295 | ||
1296 | static int | |
1297 | bp_location_has_shadow (struct bp_location *bl) | |
1298 | { | |
1299 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1300 | return 0; | |
1301 | if (!bl->inserted) | |
1302 | return 0; | |
1303 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1304 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1305 | return 0; |
1306 | return 1; | |
1307 | } | |
1308 | ||
9d497a19 PA |
1309 | /* Update BUF, which is LEN bytes read from the target address |
1310 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1311 | contents. | |
1312 | ||
1313 | If READBUF is not NULL, this buffer must not overlap with the of | |
1314 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1315 | failed assertion internal error will be raised. */ | |
1316 | ||
1317 | static void | |
1318 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1319 | const gdb_byte *writebuf_org, | |
1320 | ULONGEST memaddr, LONGEST len, | |
1321 | struct bp_target_info *target_info, | |
1322 | struct gdbarch *gdbarch) | |
1323 | { | |
1324 | /* Now do full processing of the found relevant range of elements. */ | |
1325 | CORE_ADDR bp_addr = 0; | |
1326 | int bp_size = 0; | |
1327 | int bptoffset = 0; | |
1328 | ||
1329 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1330 | current_program_space->aspace, 0)) | |
1331 | { | |
1332 | /* The breakpoint is inserted in a different address space. */ | |
1333 | return; | |
1334 | } | |
1335 | ||
1336 | /* Addresses and length of the part of the breakpoint that | |
1337 | we need to copy. */ | |
1338 | bp_addr = target_info->placed_address; | |
1339 | bp_size = target_info->shadow_len; | |
1340 | ||
1341 | if (bp_addr + bp_size <= memaddr) | |
1342 | { | |
1343 | /* The breakpoint is entirely before the chunk of memory we are | |
1344 | reading. */ | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | if (bp_addr >= memaddr + len) | |
1349 | { | |
1350 | /* The breakpoint is entirely after the chunk of memory we are | |
1351 | reading. */ | |
1352 | return; | |
1353 | } | |
1354 | ||
1355 | /* Offset within shadow_contents. */ | |
1356 | if (bp_addr < memaddr) | |
1357 | { | |
1358 | /* Only copy the second part of the breakpoint. */ | |
1359 | bp_size -= memaddr - bp_addr; | |
1360 | bptoffset = memaddr - bp_addr; | |
1361 | bp_addr = memaddr; | |
1362 | } | |
1363 | ||
1364 | if (bp_addr + bp_size > memaddr + len) | |
1365 | { | |
1366 | /* Only copy the first part of the breakpoint. */ | |
1367 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1368 | } | |
1369 | ||
1370 | if (readbuf != NULL) | |
1371 | { | |
1372 | /* Verify that the readbuf buffer does not overlap with the | |
1373 | shadow_contents buffer. */ | |
1374 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1375 | || readbuf >= (target_info->shadow_contents | |
1376 | + target_info->shadow_len)); | |
1377 | ||
1378 | /* Update the read buffer with this inserted breakpoint's | |
1379 | shadow. */ | |
1380 | memcpy (readbuf + bp_addr - memaddr, | |
1381 | target_info->shadow_contents + bptoffset, bp_size); | |
1382 | } | |
1383 | else | |
1384 | { | |
1385 | const unsigned char *bp; | |
0d5ed153 MR |
1386 | CORE_ADDR addr = target_info->reqstd_address; |
1387 | int placed_size; | |
9d497a19 PA |
1388 | |
1389 | /* Update the shadow with what we want to write to memory. */ | |
1390 | memcpy (target_info->shadow_contents + bptoffset, | |
1391 | writebuf_org + bp_addr - memaddr, bp_size); | |
1392 | ||
1393 | /* Determine appropriate breakpoint contents and size for this | |
1394 | address. */ | |
0d5ed153 | 1395 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1396 | |
1397 | /* Update the final write buffer with this inserted | |
1398 | breakpoint's INSN. */ | |
1399 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1400 | } | |
1401 | } | |
1402 | ||
8defab1a | 1403 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1404 | by replacing any memory breakpoints with their shadowed contents. |
1405 | ||
35c63cd8 JB |
1406 | If READBUF is not NULL, this buffer must not overlap with any of |
1407 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1408 | a failed assertion internal error will be raised. | |
1409 | ||
876fa593 | 1410 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1411 | bl->address - bp_locations_placed_address_before_address_max |
1412 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1413 | The range we were requested to resolve shadows for is: |
1414 | memaddr ... memaddr + len | |
1415 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1416 | memaddr + len <= (bl->address |
f5336ca5 | 1417 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1418 | and: |
f5336ca5 | 1419 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1420 | |
8defab1a | 1421 | void |
f0ba3972 PA |
1422 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1423 | const gdb_byte *writebuf_org, | |
1424 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1425 | { |
4a64f543 MS |
1426 | /* Left boundary, right boundary and median element of our binary |
1427 | search. */ | |
876fa593 JK |
1428 | unsigned bc_l, bc_r, bc; |
1429 | ||
4a64f543 MS |
1430 | /* Find BC_L which is a leftmost element which may affect BUF |
1431 | content. It is safe to report lower value but a failure to | |
1432 | report higher one. */ | |
876fa593 JK |
1433 | |
1434 | bc_l = 0; | |
f5336ca5 | 1435 | bc_r = bp_locations_count; |
876fa593 JK |
1436 | while (bc_l + 1 < bc_r) |
1437 | { | |
35df4500 | 1438 | struct bp_location *bl; |
876fa593 JK |
1439 | |
1440 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1441 | bl = bp_locations[bc]; |
876fa593 | 1442 | |
4a64f543 MS |
1443 | /* Check first BL->ADDRESS will not overflow due to the added |
1444 | constant. Then advance the left boundary only if we are sure | |
1445 | the BC element can in no way affect the BUF content (MEMADDR | |
1446 | to MEMADDR + LEN range). | |
876fa593 | 1447 | |
f5336ca5 | 1448 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1449 | offset so that we cannot miss a breakpoint with its shadow |
1450 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1451 | |
f5336ca5 | 1452 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1453 | >= bl->address) |
f5336ca5 | 1454 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1455 | <= memaddr)) |
876fa593 JK |
1456 | bc_l = bc; |
1457 | else | |
1458 | bc_r = bc; | |
1459 | } | |
1460 | ||
128070bb PA |
1461 | /* Due to the binary search above, we need to make sure we pick the |
1462 | first location that's at BC_L's address. E.g., if there are | |
1463 | multiple locations at the same address, BC_L may end up pointing | |
1464 | at a duplicate location, and miss the "master"/"inserted" | |
1465 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1466 | B: | |
1467 | ||
1468 | L1@A, L2@A, L3@B, ... | |
1469 | ||
1470 | BC_L could end up pointing at location L2, while the "master" | |
1471 | location could be L1. Since the `loc->inserted' flag is only set | |
1472 | on "master" locations, we'd forget to restore the shadow of L1 | |
1473 | and L2. */ | |
1474 | while (bc_l > 0 | |
f5336ca5 | 1475 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1476 | bc_l--; |
1477 | ||
876fa593 JK |
1478 | /* Now do full processing of the found relevant range of elements. */ |
1479 | ||
f5336ca5 | 1480 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1481 | { |
f5336ca5 | 1482 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1483 | |
35df4500 TJB |
1484 | /* bp_location array has BL->OWNER always non-NULL. */ |
1485 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1486 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1487 | bl->owner->number); |
ffce0d52 | 1488 | |
e5dd4106 | 1489 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1490 | content. */ |
1491 | ||
f5336ca5 PA |
1492 | if (bl->address >= bp_locations_placed_address_before_address_max |
1493 | && memaddr + len <= (bl->address | |
1494 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1495 | break; |
1496 | ||
35df4500 | 1497 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1498 | continue; |
6c95b8df | 1499 | |
9d497a19 PA |
1500 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1501 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1502 | } | |
c906108c | 1503 | } |
9d497a19 | 1504 | |
c906108c | 1505 | \f |
c5aa993b | 1506 | |
b775012e LM |
1507 | /* Return true if BPT is either a software breakpoint or a hardware |
1508 | breakpoint. */ | |
1509 | ||
1510 | int | |
1511 | is_breakpoint (const struct breakpoint *bpt) | |
1512 | { | |
1513 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1514 | || bpt->type == bp_hardware_breakpoint |
1515 | || bpt->type == bp_dprintf); | |
b775012e LM |
1516 | } |
1517 | ||
60e1c644 PA |
1518 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1519 | ||
a5606eee | 1520 | static int |
d77f58be | 1521 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1522 | { |
1523 | return (bpt->type == bp_hardware_watchpoint | |
1524 | || bpt->type == bp_read_watchpoint | |
1525 | || bpt->type == bp_access_watchpoint); | |
1526 | } | |
7270d8f2 | 1527 | |
60e1c644 PA |
1528 | /* Return true if BPT is of any watchpoint kind, hardware or |
1529 | software. */ | |
1530 | ||
3a5c3e22 | 1531 | int |
d77f58be | 1532 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1533 | { |
1534 | return (is_hardware_watchpoint (bpt) | |
1535 | || bpt->type == bp_watchpoint); | |
1536 | } | |
1537 | ||
3a5c3e22 PA |
1538 | /* Returns true if the current thread and its running state are safe |
1539 | to evaluate or update watchpoint B. Watchpoints on local | |
1540 | expressions need to be evaluated in the context of the thread that | |
1541 | was current when the watchpoint was created, and, that thread needs | |
1542 | to be stopped to be able to select the correct frame context. | |
1543 | Watchpoints on global expressions can be evaluated on any thread, | |
1544 | and in any state. It is presently left to the target allowing | |
1545 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1546 | |
1547 | static int | |
3a5c3e22 | 1548 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1549 | { |
c1fc2657 | 1550 | return (b->pspace == current_program_space |
d7e15655 TT |
1551 | && (b->watchpoint_thread == null_ptid |
1552 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1553 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1554 | } |
1555 | ||
d0fb5eae JK |
1556 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1557 | associated bp_watchpoint_scope breakpoint. */ | |
1558 | ||
1559 | static void | |
3a5c3e22 | 1560 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1561 | { |
c1fc2657 | 1562 | if (w->related_breakpoint != w) |
d0fb5eae | 1563 | { |
c1fc2657 SM |
1564 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1565 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1566 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1567 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1568 | w->related_breakpoint = w; | |
d0fb5eae | 1569 | } |
c1fc2657 | 1570 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1571 | } |
1572 | ||
bb9d5f81 PP |
1573 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1574 | watchpoint W. */ | |
1575 | ||
1576 | static struct value * | |
1577 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1578 | { | |
1579 | struct value *bit_val; | |
1580 | ||
1581 | if (val == NULL) | |
1582 | return NULL; | |
1583 | ||
1584 | bit_val = allocate_value (value_type (val)); | |
1585 | ||
1586 | unpack_value_bitfield (bit_val, | |
1587 | w->val_bitpos, | |
1588 | w->val_bitsize, | |
1589 | value_contents_for_printing (val), | |
1590 | value_offset (val), | |
1591 | val); | |
1592 | ||
1593 | return bit_val; | |
1594 | } | |
1595 | ||
c6d81124 PA |
1596 | /* Allocate a dummy location and add it to B, which must be a software |
1597 | watchpoint. This is required because even if a software watchpoint | |
1598 | is not watching any memory, bpstat_stop_status requires a location | |
1599 | to be able to report stops. */ | |
1600 | ||
1601 | static void | |
1602 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1603 | struct program_space *pspace) | |
1604 | { | |
1605 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1606 | ||
1607 | b->loc = allocate_bp_location (b); | |
1608 | b->loc->pspace = pspace; | |
1609 | b->loc->address = -1; | |
1610 | b->loc->length = -1; | |
1611 | } | |
1612 | ||
1613 | /* Returns true if B is a software watchpoint that is not watching any | |
1614 | memory (e.g., "watch $pc"). */ | |
1615 | ||
1616 | static int | |
1617 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1618 | { | |
1619 | return (b->type == bp_watchpoint | |
1620 | && b->loc != NULL | |
1621 | && b->loc->next == NULL | |
1622 | && b->loc->address == -1 | |
1623 | && b->loc->length == -1); | |
1624 | } | |
1625 | ||
567e1b4e JB |
1626 | /* Assuming that B is a watchpoint: |
1627 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1628 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1629 | - Evaluate the condition if there is one, and store the result |
1630 | in b->loc->cond. | |
a5606eee VP |
1631 | - Update the list of values that must be watched in B->loc. |
1632 | ||
4a64f543 MS |
1633 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1634 | nothing. If this is local watchpoint that is out of scope, delete | |
1635 | it. | |
1636 | ||
1637 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1638 | removed + inserted on each stop here. Normal breakpoints must | |
1639 | never be removed because they might be missed by a running thread | |
1640 | when debugging in non-stop mode. On the other hand, hardware | |
1641 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1642 | to each LWP since they are stored in each LWP's hardware debug | |
1643 | registers. Therefore, such LWP must be stopped first in order to | |
1644 | be able to modify its hardware watchpoints. | |
1645 | ||
1646 | Hardware watchpoints must be reset exactly once after being | |
1647 | presented to the user. It cannot be done sooner, because it would | |
1648 | reset the data used to present the watchpoint hit to the user. And | |
1649 | it must not be done later because it could display the same single | |
1650 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1651 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1652 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1653 | not user-visible - its hit is suppressed if the memory content has | |
1654 | not changed. | |
1655 | ||
1656 | The following constraints influence the location where we can reset | |
1657 | hardware watchpoints: | |
1658 | ||
1659 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1660 | called several times when GDB stops. | |
1661 | ||
1662 | [linux] | |
1663 | * Multiple hardware watchpoints can be hit at the same time, | |
1664 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1665 | hit at a time as the reason for stopping, and all the other hits | |
1666 | are presented later, one after the other, each time the user | |
1667 | requests the execution to be resumed. Execution is not resumed | |
1668 | for the threads still having pending hit event stored in | |
1669 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1670 | the inferior on the first stop the thread hit event is kept being | |
1671 | reported from its cached value by linux_nat_stopped_data_address | |
1672 | until the real thread resume happens after the watchpoint gets | |
1673 | presented and thus its LWP_INFO->STATUS gets reset. | |
1674 | ||
1675 | Therefore the hardware watchpoint hit can get safely reset on the | |
1676 | watchpoint removal from inferior. */ | |
a79d3c27 | 1677 | |
b40ce68a | 1678 | static void |
3a5c3e22 | 1679 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1680 | { |
a5606eee | 1681 | int within_current_scope; |
a5606eee | 1682 | struct frame_id saved_frame_id; |
66076460 | 1683 | int frame_saved; |
a5606eee | 1684 | |
f6bc2008 PA |
1685 | /* If this is a local watchpoint, we only want to check if the |
1686 | watchpoint frame is in scope if the current thread is the thread | |
1687 | that was used to create the watchpoint. */ | |
1688 | if (!watchpoint_in_thread_scope (b)) | |
1689 | return; | |
1690 | ||
c1fc2657 | 1691 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1692 | return; |
1693 | ||
66076460 | 1694 | frame_saved = 0; |
a5606eee VP |
1695 | |
1696 | /* Determine if the watchpoint is within scope. */ | |
1697 | if (b->exp_valid_block == NULL) | |
1698 | within_current_scope = 1; | |
1699 | else | |
1700 | { | |
b5db5dfc UW |
1701 | struct frame_info *fi = get_current_frame (); |
1702 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1703 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1704 | ||
c9cf6e20 MG |
1705 | /* If we're at a point where the stack has been destroyed |
1706 | (e.g. in a function epilogue), unwinding may not work | |
1707 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1708 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1709 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1710 | return; |
66076460 DJ |
1711 | |
1712 | /* Save the current frame's ID so we can restore it after | |
1713 | evaluating the watchpoint expression on its own frame. */ | |
1714 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1715 | took a frame parameter, so that we didn't have to change the | |
1716 | selected frame. */ | |
1717 | frame_saved = 1; | |
1718 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1719 | ||
a5606eee VP |
1720 | fi = frame_find_by_id (b->watchpoint_frame); |
1721 | within_current_scope = (fi != NULL); | |
1722 | if (within_current_scope) | |
1723 | select_frame (fi); | |
1724 | } | |
1725 | ||
b5db5dfc UW |
1726 | /* We don't free locations. They are stored in the bp_location array |
1727 | and update_global_location_list will eventually delete them and | |
1728 | remove breakpoints if needed. */ | |
c1fc2657 | 1729 | b->loc = NULL; |
b5db5dfc | 1730 | |
a5606eee VP |
1731 | if (within_current_scope && reparse) |
1732 | { | |
bbc13ae3 | 1733 | const char *s; |
d63d0675 | 1734 | |
4d01a485 | 1735 | b->exp.reset (); |
d63d0675 | 1736 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1737 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1738 | /* If the meaning of expression itself changed, the old value is |
1739 | no longer relevant. We don't want to report a watchpoint hit | |
1740 | to the user when the old value and the new value may actually | |
1741 | be completely different objects. */ | |
fa4727a6 DJ |
1742 | b->val = NULL; |
1743 | b->val_valid = 0; | |
60e1c644 PA |
1744 | |
1745 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1746 | expression is stored in the breakpoint object, not in the | |
1747 | locations (re)created below. */ | |
c1fc2657 | 1748 | if (b->cond_string != NULL) |
60e1c644 | 1749 | { |
4d01a485 | 1750 | b->cond_exp.reset (); |
60e1c644 | 1751 | |
c1fc2657 | 1752 | s = b->cond_string; |
1bb9788d | 1753 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1754 | } |
a5606eee | 1755 | } |
a5606eee VP |
1756 | |
1757 | /* If we failed to parse the expression, for example because | |
1758 | it refers to a global variable in a not-yet-loaded shared library, | |
1759 | don't try to insert watchpoint. We don't automatically delete | |
1760 | such watchpoint, though, since failure to parse expression | |
1761 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1762 | if (!target_has_execution) |
2d134ed3 PA |
1763 | { |
1764 | /* Without execution, memory can't change. No use to try and | |
1765 | set watchpoint locations. The watchpoint will be reset when | |
1766 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1767 | if (!can_use_hw_watchpoints) |
1768 | { | |
c1fc2657 SM |
1769 | if (b->ops->works_in_software_mode (b)) |
1770 | b->type = bp_watchpoint; | |
e8369a73 | 1771 | else |
638aa5a1 AB |
1772 | error (_("Can't set read/access watchpoint when " |
1773 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1774 | } |
2d134ed3 PA |
1775 | } |
1776 | else if (within_current_scope && b->exp) | |
a5606eee | 1777 | { |
0cf6dd15 | 1778 | int pc = 0; |
a6535de1 | 1779 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1780 | struct value *v, *result; |
2d134ed3 | 1781 | struct program_space *frame_pspace; |
a5606eee | 1782 | |
4d01a485 | 1783 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1784 | |
a5606eee VP |
1785 | /* Avoid setting b->val if it's already set. The meaning of |
1786 | b->val is 'the last value' user saw, and we should update | |
1787 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1788 | happens, the code that reports it updates b->val directly. |
1789 | We don't keep track of the memory value for masked | |
1790 | watchpoints. */ | |
c1fc2657 | 1791 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1792 | { |
bb9d5f81 | 1793 | if (b->val_bitsize != 0) |
850645cf TT |
1794 | v = extract_bitfield_from_watchpoint_value (b, v); |
1795 | b->val = release_value (v); | |
fa4727a6 DJ |
1796 | b->val_valid = 1; |
1797 | } | |
a5606eee | 1798 | |
2d134ed3 PA |
1799 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1800 | ||
a5606eee | 1801 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1802 | gdb_assert (!val_chain.empty ()); |
1803 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1804 | { |
a6535de1 TT |
1805 | v = iter.get (); |
1806 | ||
a5606eee VP |
1807 | /* If it's a memory location, and GDB actually needed |
1808 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1809 | must watch it. If the first value returned is |
1810 | still lazy, that means an error occurred reading it; | |
1811 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1812 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1813 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1814 | { |
1815 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1816 | |
a5606eee VP |
1817 | /* We only watch structs and arrays if user asked |
1818 | for it explicitly, never if they just happen to | |
1819 | appear in the middle of some value chain. */ | |
fa4727a6 | 1820 | if (v == result |
a5606eee VP |
1821 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1822 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1823 | { | |
1824 | CORE_ADDR addr; | |
f486487f | 1825 | enum target_hw_bp_type type; |
a5606eee | 1826 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1827 | int bitpos = 0, bitsize = 0; |
1828 | ||
1829 | if (value_bitsize (v) != 0) | |
1830 | { | |
1831 | /* Extract the bit parameters out from the bitfield | |
1832 | sub-expression. */ | |
1833 | bitpos = value_bitpos (v); | |
1834 | bitsize = value_bitsize (v); | |
1835 | } | |
1836 | else if (v == result && b->val_bitsize != 0) | |
1837 | { | |
1838 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1839 | lvalue whose bit parameters are saved in the fields | |
1840 | VAL_BITPOS and VAL_BITSIZE. */ | |
1841 | bitpos = b->val_bitpos; | |
1842 | bitsize = b->val_bitsize; | |
1843 | } | |
a5606eee | 1844 | |
42ae5230 | 1845 | addr = value_address (v); |
bb9d5f81 PP |
1846 | if (bitsize != 0) |
1847 | { | |
1848 | /* Skip the bytes that don't contain the bitfield. */ | |
1849 | addr += bitpos / 8; | |
1850 | } | |
1851 | ||
a5606eee | 1852 | type = hw_write; |
c1fc2657 | 1853 | if (b->type == bp_read_watchpoint) |
a5606eee | 1854 | type = hw_read; |
c1fc2657 | 1855 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1856 | type = hw_access; |
3a5c3e22 | 1857 | |
c1fc2657 SM |
1858 | loc = allocate_bp_location (b); |
1859 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1860 | ; |
1861 | *tmp = loc; | |
a6d9a66e | 1862 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1863 | |
1864 | loc->pspace = frame_pspace; | |
f17d9474 | 1865 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1866 | |
1867 | if (bitsize != 0) | |
1868 | { | |
1869 | /* Just cover the bytes that make up the bitfield. */ | |
1870 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1871 | } | |
1872 | else | |
1873 | loc->length = TYPE_LENGTH (value_type (v)); | |
1874 | ||
a5606eee VP |
1875 | loc->watchpoint_type = type; |
1876 | } | |
1877 | } | |
9fa40276 TJB |
1878 | } |
1879 | ||
1880 | /* Change the type of breakpoint between hardware assisted or | |
1881 | an ordinary watchpoint depending on the hardware support | |
1882 | and free hardware slots. REPARSE is set when the inferior | |
1883 | is started. */ | |
a9634178 | 1884 | if (reparse) |
9fa40276 | 1885 | { |
e09342b5 | 1886 | int reg_cnt; |
9fa40276 TJB |
1887 | enum bp_loc_type loc_type; |
1888 | struct bp_location *bl; | |
a5606eee | 1889 | |
a9634178 | 1890 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1891 | |
1892 | if (reg_cnt) | |
9fa40276 TJB |
1893 | { |
1894 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1895 | enum bptype type; |
9fa40276 | 1896 | |
a9634178 TJB |
1897 | /* Use an exact watchpoint when there's only one memory region to be |
1898 | watched, and only one debug register is needed to watch it. */ | |
1899 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1900 | ||
9fa40276 | 1901 | /* We need to determine how many resources are already |
e09342b5 TJB |
1902 | used for all other hardware watchpoints plus this one |
1903 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1904 | this watchpoint in as well. */ |
1905 | ||
1906 | /* If this is a software watchpoint, we try to turn it | |
1907 | to a hardware one -- count resources as if B was of | |
1908 | hardware watchpoint type. */ | |
c1fc2657 | 1909 | type = b->type; |
a1398e0c PA |
1910 | if (type == bp_watchpoint) |
1911 | type = bp_hardware_watchpoint; | |
1912 | ||
1913 | /* This watchpoint may or may not have been placed on | |
1914 | the list yet at this point (it won't be in the list | |
1915 | if we're trying to create it for the first time, | |
1916 | through watch_command), so always account for it | |
1917 | manually. */ | |
1918 | ||
1919 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1920 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1921 | |
1922 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1923 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1924 | |
1925 | target_resources_ok | |
1926 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1927 | if (target_resources_ok <= 0) |
a9634178 | 1928 | { |
c1fc2657 | 1929 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1930 | |
1931 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1932 | error (_("Target does not support this type of " |
1933 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1934 | else if (target_resources_ok < 0 && !sw_mode) |
1935 | error (_("There are not enough available hardware " | |
1936 | "resources for this watchpoint.")); | |
a1398e0c PA |
1937 | |
1938 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1939 | b->type = bp_watchpoint; |
a1398e0c PA |
1940 | } |
1941 | else | |
1942 | { | |
1943 | /* If this was a software watchpoint, we've just | |
1944 | found we have enough resources to turn it to a | |
1945 | hardware watchpoint. Otherwise, this is a | |
1946 | nop. */ | |
c1fc2657 | 1947 | b->type = type; |
a9634178 | 1948 | } |
9fa40276 | 1949 | } |
c1fc2657 | 1950 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1951 | { |
1952 | if (!can_use_hw_watchpoints) | |
1953 | error (_("Can't set read/access watchpoint when " | |
1954 | "hardware watchpoints are disabled.")); | |
1955 | else | |
1956 | error (_("Expression cannot be implemented with " | |
1957 | "read/access watchpoint.")); | |
1958 | } | |
9fa40276 | 1959 | else |
c1fc2657 | 1960 | b->type = bp_watchpoint; |
9fa40276 | 1961 | |
c1fc2657 | 1962 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1963 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1964 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1965 | bl->loc_type = loc_type; |
1966 | } | |
1967 | ||
c7437ca6 PA |
1968 | /* If a software watchpoint is not watching any memory, then the |
1969 | above left it without any location set up. But, | |
1970 | bpstat_stop_status requires a location to be able to report | |
1971 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1972 | if (b->type == bp_watchpoint && b->loc == NULL) |
1973 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1974 | } |
1975 | else if (!within_current_scope) | |
7270d8f2 | 1976 | { |
ac74f770 MS |
1977 | printf_filtered (_("\ |
1978 | Watchpoint %d deleted because the program has left the block\n\ | |
1979 | in which its expression is valid.\n"), | |
c1fc2657 | 1980 | b->number); |
d0fb5eae | 1981 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1982 | } |
a5606eee VP |
1983 | |
1984 | /* Restore the selected frame. */ | |
66076460 DJ |
1985 | if (frame_saved) |
1986 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1987 | } |
1988 | ||
a5606eee | 1989 | |
74960c60 | 1990 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1991 | inserted in the inferior. We don't differentiate the type of BL's owner |
1992 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1993 | breakpoint_ops is not defined, because in insert_bp_location, | |
1994 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1995 | static int |
35df4500 | 1996 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1997 | { |
35df4500 | 1998 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1999 | return 0; |
2000 | ||
35df4500 | 2001 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2002 | return 0; |
2003 | ||
35df4500 | 2004 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2005 | return 0; |
2006 | ||
f8eba3c6 TT |
2007 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2008 | return 0; | |
2009 | ||
56710373 PA |
2010 | /* This is set for example, when we're attached to the parent of a |
2011 | vfork, and have detached from the child. The child is running | |
2012 | free, and we expect it to do an exec or exit, at which point the | |
2013 | OS makes the parent schedulable again (and the target reports | |
2014 | that the vfork is done). Until the child is done with the shared | |
2015 | memory region, do not insert breakpoints in the parent, otherwise | |
2016 | the child could still trip on the parent's breakpoints. Since | |
2017 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2018 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2019 | return 0; |
2020 | ||
31e77af2 | 2021 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2022 | location, except if the breakpoint is a single-step breakpoint, |
2023 | and the breakpoint's thread is the thread which is stepping past | |
2024 | a breakpoint. */ | |
31e77af2 PA |
2025 | if ((bl->loc_type == bp_loc_software_breakpoint |
2026 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2027 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2028 | bl->address) |
2029 | /* The single-step breakpoint may be inserted at the location | |
2030 | we're trying to step if the instruction branches to itself. | |
2031 | However, the instruction won't be executed at all and it may | |
2032 | break the semantics of the instruction, for example, the | |
2033 | instruction is a conditional branch or updates some flags. | |
2034 | We can't fix it unless GDB is able to emulate the instruction | |
2035 | or switch to displaced stepping. */ | |
2036 | && !(bl->owner->type == bp_single_step | |
2037 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2038 | { |
2039 | if (debug_infrun) | |
2040 | { | |
2041 | fprintf_unfiltered (gdb_stdlog, | |
2042 | "infrun: skipping breakpoint: " | |
2043 | "stepping past insn at: %s\n", | |
2044 | paddress (bl->gdbarch, bl->address)); | |
2045 | } | |
2046 | return 0; | |
2047 | } | |
31e77af2 | 2048 | |
963f9c80 PA |
2049 | /* Don't insert watchpoints if we're trying to step past the |
2050 | instruction that triggered one. */ | |
2051 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2052 | && stepping_past_nonsteppable_watchpoint ()) | |
2053 | { | |
2054 | if (debug_infrun) | |
2055 | { | |
2056 | fprintf_unfiltered (gdb_stdlog, | |
2057 | "infrun: stepping past non-steppable watchpoint. " | |
2058 | "skipping watchpoint at %s:%d\n", | |
2059 | paddress (bl->gdbarch, bl->address), | |
2060 | bl->length); | |
2061 | } | |
2062 | return 0; | |
2063 | } | |
2064 | ||
74960c60 VP |
2065 | return 1; |
2066 | } | |
2067 | ||
934709f0 PW |
2068 | /* Same as should_be_inserted but does the check assuming |
2069 | that the location is not duplicated. */ | |
2070 | ||
2071 | static int | |
2072 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2073 | { | |
2074 | int result; | |
2075 | const int save_duplicate = bl->duplicate; | |
2076 | ||
2077 | bl->duplicate = 0; | |
2078 | result = should_be_inserted (bl); | |
2079 | bl->duplicate = save_duplicate; | |
2080 | return result; | |
2081 | } | |
2082 | ||
b775012e LM |
2083 | /* Parses a conditional described by an expression COND into an |
2084 | agent expression bytecode suitable for evaluation | |
2085 | by the bytecode interpreter. Return NULL if there was | |
2086 | any error during parsing. */ | |
2087 | ||
833177a4 | 2088 | static agent_expr_up |
b775012e LM |
2089 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2090 | { | |
833177a4 | 2091 | if (cond == NULL) |
b775012e LM |
2092 | return NULL; |
2093 | ||
833177a4 PA |
2094 | agent_expr_up aexpr; |
2095 | ||
b775012e LM |
2096 | /* We don't want to stop processing, so catch any errors |
2097 | that may show up. */ | |
492d29ea | 2098 | TRY |
b775012e | 2099 | { |
036e657b | 2100 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2101 | } |
2102 | ||
492d29ea | 2103 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2104 | { |
2105 | /* If we got here, it means the condition could not be parsed to a valid | |
2106 | bytecode expression and thus can't be evaluated on the target's side. | |
2107 | It's no use iterating through the conditions. */ | |
b775012e | 2108 | } |
492d29ea | 2109 | END_CATCH |
b775012e LM |
2110 | |
2111 | /* We have a valid agent expression. */ | |
2112 | return aexpr; | |
2113 | } | |
2114 | ||
2115 | /* Based on location BL, create a list of breakpoint conditions to be | |
2116 | passed on to the target. If we have duplicated locations with different | |
2117 | conditions, we will add such conditions to the list. The idea is that the | |
2118 | target will evaluate the list of conditions and will only notify GDB when | |
2119 | one of them is true. */ | |
2120 | ||
2121 | static void | |
2122 | build_target_condition_list (struct bp_location *bl) | |
2123 | { | |
2124 | struct bp_location **locp = NULL, **loc2p; | |
2125 | int null_condition_or_parse_error = 0; | |
2126 | int modified = bl->needs_update; | |
2127 | struct bp_location *loc; | |
2128 | ||
8b4f3082 | 2129 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2130 | bl->target_info.conditions.clear (); |
8b4f3082 | 2131 | |
b775012e LM |
2132 | /* This is only meaningful if the target is |
2133 | evaluating conditions and if the user has | |
2134 | opted for condition evaluation on the target's | |
2135 | side. */ | |
2136 | if (gdb_evaluates_breakpoint_condition_p () | |
2137 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2138 | return; | |
2139 | ||
2140 | /* Do a first pass to check for locations with no assigned | |
2141 | conditions or conditions that fail to parse to a valid agent expression | |
2142 | bytecode. If any of these happen, then it's no use to send conditions | |
2143 | to the target since this location will always trigger and generate a | |
2144 | response back to GDB. */ | |
2145 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2146 | { | |
2147 | loc = (*loc2p); | |
2148 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2149 | { | |
2150 | if (modified) | |
2151 | { | |
b775012e LM |
2152 | /* Re-parse the conditions since something changed. In that |
2153 | case we already freed the condition bytecodes (see | |
2154 | force_breakpoint_reinsertion). We just | |
2155 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2156 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2157 | loc->cond.get ()); | |
b775012e LM |
2158 | } |
2159 | ||
2160 | /* If we have a NULL bytecode expression, it means something | |
2161 | went wrong or we have a null condition expression. */ | |
2162 | if (!loc->cond_bytecode) | |
2163 | { | |
2164 | null_condition_or_parse_error = 1; | |
2165 | break; | |
2166 | } | |
2167 | } | |
2168 | } | |
2169 | ||
2170 | /* If any of these happened, it means we will have to evaluate the conditions | |
2171 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2172 | for all the other duplicate locations, thus we free all of them here. | |
2173 | ||
2174 | This is so we have a finer control over which locations' conditions are | |
2175 | being evaluated by GDB or the remote stub. */ | |
2176 | if (null_condition_or_parse_error) | |
2177 | { | |
2178 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2179 | { | |
2180 | loc = (*loc2p); | |
2181 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2182 | { | |
2183 | /* Only go as far as the first NULL bytecode is | |
2184 | located. */ | |
2185 | if (!loc->cond_bytecode) | |
2186 | return; | |
2187 | ||
833177a4 | 2188 | loc->cond_bytecode.reset (); |
b775012e LM |
2189 | } |
2190 | } | |
2191 | } | |
2192 | ||
2193 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2194 | for this location's address. */ | |
2195 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2196 | { | |
2197 | loc = (*loc2p); | |
2198 | if (loc->cond | |
2199 | && is_breakpoint (loc->owner) | |
2200 | && loc->pspace->num == bl->pspace->num | |
2201 | && loc->owner->enable_state == bp_enabled | |
2202 | && loc->enabled) | |
3cde5c42 PA |
2203 | { |
2204 | /* Add the condition to the vector. This will be used later | |
2205 | to send the conditions to the target. */ | |
2206 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2207 | } | |
b775012e LM |
2208 | } |
2209 | ||
2210 | return; | |
2211 | } | |
2212 | ||
d3ce09f5 SS |
2213 | /* Parses a command described by string CMD into an agent expression |
2214 | bytecode suitable for evaluation by the bytecode interpreter. | |
2215 | Return NULL if there was any error during parsing. */ | |
2216 | ||
833177a4 | 2217 | static agent_expr_up |
d3ce09f5 SS |
2218 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2219 | { | |
bbc13ae3 KS |
2220 | const char *cmdrest; |
2221 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2222 | struct gdbarch *gdbarch = get_current_arch (); |
2223 | ||
833177a4 | 2224 | if (cmd == NULL) |
d3ce09f5 SS |
2225 | return NULL; |
2226 | ||
2227 | cmdrest = cmd; | |
2228 | ||
2229 | if (*cmdrest == ',') | |
2230 | ++cmdrest; | |
f1735a53 | 2231 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2232 | |
2233 | if (*cmdrest++ != '"') | |
2234 | error (_("No format string following the location")); | |
2235 | ||
2236 | format_start = cmdrest; | |
2237 | ||
8e481c3b | 2238 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2239 | |
2240 | format_end = cmdrest; | |
2241 | ||
2242 | if (*cmdrest++ != '"') | |
2243 | error (_("Bad format string, non-terminated '\"'.")); | |
2244 | ||
f1735a53 | 2245 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2246 | |
2247 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2248 | error (_("Invalid argument syntax")); | |
2249 | ||
2250 | if (*cmdrest == ',') | |
2251 | cmdrest++; | |
f1735a53 | 2252 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2253 | |
2254 | /* For each argument, make an expression. */ | |
2255 | ||
8e481c3b | 2256 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2257 | while (*cmdrest != '\0') |
2258 | { | |
bbc13ae3 | 2259 | const char *cmd1; |
d3ce09f5 SS |
2260 | |
2261 | cmd1 = cmdrest; | |
4d01a485 | 2262 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2263 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2264 | cmdrest = cmd1; |
2265 | if (*cmdrest == ',') | |
2266 | ++cmdrest; | |
2267 | } | |
2268 | ||
833177a4 PA |
2269 | agent_expr_up aexpr; |
2270 | ||
d3ce09f5 SS |
2271 | /* We don't want to stop processing, so catch any errors |
2272 | that may show up. */ | |
492d29ea | 2273 | TRY |
d3ce09f5 | 2274 | { |
036e657b JB |
2275 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2276 | format_start, format_end - format_start, | |
8e481c3b | 2277 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2278 | } |
492d29ea | 2279 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2280 | { |
2281 | /* If we got here, it means the command could not be parsed to a valid | |
2282 | bytecode expression and thus can't be evaluated on the target's side. | |
2283 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2284 | } |
492d29ea PA |
2285 | END_CATCH |
2286 | ||
d3ce09f5 SS |
2287 | /* We have a valid agent expression, return it. */ |
2288 | return aexpr; | |
2289 | } | |
2290 | ||
2291 | /* Based on location BL, create a list of breakpoint commands to be | |
2292 | passed on to the target. If we have duplicated locations with | |
2293 | different commands, we will add any such to the list. */ | |
2294 | ||
2295 | static void | |
2296 | build_target_command_list (struct bp_location *bl) | |
2297 | { | |
2298 | struct bp_location **locp = NULL, **loc2p; | |
2299 | int null_command_or_parse_error = 0; | |
2300 | int modified = bl->needs_update; | |
2301 | struct bp_location *loc; | |
2302 | ||
3cde5c42 PA |
2303 | /* Clear commands left over from a previous insert. */ |
2304 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2305 | |
41fac0cf | 2306 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2307 | return; |
2308 | ||
41fac0cf PA |
2309 | /* For now, limit to agent-style dprintf breakpoints. */ |
2310 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2311 | return; |
2312 | ||
41fac0cf PA |
2313 | /* For now, if we have any duplicate location that isn't a dprintf, |
2314 | don't install the target-side commands, as that would make the | |
2315 | breakpoint not be reported to the core, and we'd lose | |
2316 | control. */ | |
2317 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2318 | { | |
2319 | loc = (*loc2p); | |
2320 | if (is_breakpoint (loc->owner) | |
2321 | && loc->pspace->num == bl->pspace->num | |
2322 | && loc->owner->type != bp_dprintf) | |
2323 | return; | |
2324 | } | |
2325 | ||
d3ce09f5 SS |
2326 | /* Do a first pass to check for locations with no assigned |
2327 | conditions or conditions that fail to parse to a valid agent expression | |
2328 | bytecode. If any of these happen, then it's no use to send conditions | |
2329 | to the target since this location will always trigger and generate a | |
2330 | response back to GDB. */ | |
2331 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2332 | { | |
2333 | loc = (*loc2p); | |
2334 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2335 | { | |
2336 | if (modified) | |
2337 | { | |
d3ce09f5 SS |
2338 | /* Re-parse the commands since something changed. In that |
2339 | case we already freed the command bytecodes (see | |
2340 | force_breakpoint_reinsertion). We just | |
2341 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2342 | loc->cmd_bytecode |
2343 | = parse_cmd_to_aexpr (bl->address, | |
2344 | loc->owner->extra_string); | |
d3ce09f5 SS |
2345 | } |
2346 | ||
2347 | /* If we have a NULL bytecode expression, it means something | |
2348 | went wrong or we have a null command expression. */ | |
2349 | if (!loc->cmd_bytecode) | |
2350 | { | |
2351 | null_command_or_parse_error = 1; | |
2352 | break; | |
2353 | } | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | /* If anything failed, then we're not doing target-side commands, | |
2358 | and so clean up. */ | |
2359 | if (null_command_or_parse_error) | |
2360 | { | |
2361 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2362 | { | |
2363 | loc = (*loc2p); | |
2364 | if (is_breakpoint (loc->owner) | |
2365 | && loc->pspace->num == bl->pspace->num) | |
2366 | { | |
2367 | /* Only go as far as the first NULL bytecode is | |
2368 | located. */ | |
40fb6c5e | 2369 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2370 | return; |
2371 | ||
833177a4 | 2372 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2373 | } |
2374 | } | |
2375 | } | |
2376 | ||
2377 | /* No NULL commands or failed bytecode generation. Build a command list | |
2378 | for this location's address. */ | |
2379 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2380 | { | |
2381 | loc = (*loc2p); | |
2382 | if (loc->owner->extra_string | |
2383 | && is_breakpoint (loc->owner) | |
2384 | && loc->pspace->num == bl->pspace->num | |
2385 | && loc->owner->enable_state == bp_enabled | |
2386 | && loc->enabled) | |
3cde5c42 PA |
2387 | { |
2388 | /* Add the command to the vector. This will be used later | |
2389 | to send the commands to the target. */ | |
2390 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2391 | } | |
d3ce09f5 SS |
2392 | } |
2393 | ||
2394 | bl->target_info.persist = 0; | |
2395 | /* Maybe flag this location as persistent. */ | |
2396 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2397 | bl->target_info.persist = 1; | |
2398 | } | |
2399 | ||
833b7ab5 YQ |
2400 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2401 | of breakpoint according to ADDR except single-step breakpoint. | |
2402 | Get the kind of single-step breakpoint according to the current | |
2403 | registers state. */ | |
cd6c3b4f YQ |
2404 | |
2405 | static int | |
2406 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2407 | { | |
833b7ab5 YQ |
2408 | if (bl->owner->type == bp_single_step) |
2409 | { | |
2410 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2411 | struct regcache *regcache; | |
2412 | ||
00431a78 | 2413 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2414 | |
2415 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2416 | regcache, addr); | |
2417 | } | |
2418 | else | |
2419 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2420 | } |
2421 | ||
35df4500 TJB |
2422 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2423 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2424 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2425 | Returns 0 for success, 1 if the bp_location type is not supported or |
2426 | -1 for failure. | |
879bfdc2 | 2427 | |
4a64f543 MS |
2428 | NOTE drow/2003-09-09: This routine could be broken down to an |
2429 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2430 | static int |
35df4500 | 2431 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2432 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2433 | int *disabled_breaks, |
dd61ec5c MW |
2434 | int *hw_breakpoint_error, |
2435 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2436 | { |
688fca4f | 2437 | gdb_exception bp_excpt = exception_none; |
879bfdc2 | 2438 | |
b775012e | 2439 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2440 | return 0; |
2441 | ||
35c63cd8 JB |
2442 | /* Note we don't initialize bl->target_info, as that wipes out |
2443 | the breakpoint location's shadow_contents if the breakpoint | |
2444 | is still inserted at that location. This in turn breaks | |
2445 | target_read_memory which depends on these buffers when | |
2446 | a memory read is requested at the breakpoint location: | |
2447 | Once the target_info has been wiped, we fail to see that | |
2448 | we have a breakpoint inserted at that address and thus | |
2449 | read the breakpoint instead of returning the data saved in | |
2450 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2451 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2452 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2453 | bl->target_info.length = bl->length; |
8181d85f | 2454 | |
b775012e LM |
2455 | /* When working with target-side conditions, we must pass all the conditions |
2456 | for the same breakpoint address down to the target since GDB will not | |
2457 | insert those locations. With a list of breakpoint conditions, the target | |
2458 | can decide when to stop and notify GDB. */ | |
2459 | ||
2460 | if (is_breakpoint (bl->owner)) | |
2461 | { | |
2462 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2463 | build_target_command_list (bl); |
2464 | /* Reset the modification marker. */ | |
b775012e LM |
2465 | bl->needs_update = 0; |
2466 | } | |
2467 | ||
35df4500 TJB |
2468 | if (bl->loc_type == bp_loc_software_breakpoint |
2469 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2470 | { |
35df4500 | 2471 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2472 | { |
2473 | /* If the explicitly specified breakpoint type | |
2474 | is not hardware breakpoint, check the memory map to see | |
2475 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2476 | |
765dc015 VP |
2477 | Two important cases are: |
2478 | - location type is not hardware breakpoint, memory | |
2479 | is readonly. We change the type of the location to | |
2480 | hardware breakpoint. | |
4a64f543 MS |
2481 | - location type is hardware breakpoint, memory is |
2482 | read-write. This means we've previously made the | |
2483 | location hardware one, but then the memory map changed, | |
2484 | so we undo. | |
765dc015 | 2485 | |
4a64f543 MS |
2486 | When breakpoints are removed, remove_breakpoints will use |
2487 | location types we've just set here, the only possible | |
2488 | problem is that memory map has changed during running | |
2489 | program, but it's not going to work anyway with current | |
2490 | gdb. */ | |
765dc015 | 2491 | struct mem_region *mr |
0d5ed153 | 2492 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2493 | |
2494 | if (mr) | |
2495 | { | |
2496 | if (automatic_hardware_breakpoints) | |
2497 | { | |
765dc015 VP |
2498 | enum bp_loc_type new_type; |
2499 | ||
2500 | if (mr->attrib.mode != MEM_RW) | |
2501 | new_type = bp_loc_hardware_breakpoint; | |
2502 | else | |
2503 | new_type = bp_loc_software_breakpoint; | |
2504 | ||
35df4500 | 2505 | if (new_type != bl->loc_type) |
765dc015 VP |
2506 | { |
2507 | static int said = 0; | |
cc59ec59 | 2508 | |
35df4500 | 2509 | bl->loc_type = new_type; |
765dc015 VP |
2510 | if (!said) |
2511 | { | |
3e43a32a MS |
2512 | fprintf_filtered (gdb_stdout, |
2513 | _("Note: automatically using " | |
2514 | "hardware breakpoints for " | |
2515 | "read-only addresses.\n")); | |
765dc015 VP |
2516 | said = 1; |
2517 | } | |
2518 | } | |
2519 | } | |
35df4500 | 2520 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2521 | && mr->attrib.mode != MEM_RW) |
2522 | { | |
2523 | fprintf_unfiltered (tmp_error_stream, | |
2524 | _("Cannot insert breakpoint %d.\n" | |
2525 | "Cannot set software breakpoint " | |
2526 | "at read-only address %s\n"), | |
2527 | bl->owner->number, | |
2528 | paddress (bl->gdbarch, bl->address)); | |
2529 | return 1; | |
2530 | } | |
765dc015 VP |
2531 | } |
2532 | } | |
2533 | ||
879bfdc2 DJ |
2534 | /* First check to see if we have to handle an overlay. */ |
2535 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2536 | || bl->section == NULL |
2537 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2538 | { |
2539 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2540 | TRY |
dd61ec5c | 2541 | { |
0000e5cc PA |
2542 | int val; |
2543 | ||
dd61ec5c | 2544 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2545 | if (val) |
688fca4f | 2546 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2547 | } |
492d29ea | 2548 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2549 | { |
688fca4f | 2550 | bp_excpt = e; |
dd61ec5c | 2551 | } |
492d29ea | 2552 | END_CATCH |
879bfdc2 DJ |
2553 | } |
2554 | else | |
2555 | { | |
4a64f543 | 2556 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2557 | Shall we set a breakpoint at the LMA? */ |
2558 | if (!overlay_events_enabled) | |
2559 | { | |
2560 | /* Yes -- overlay event support is not active, | |
2561 | so we must try to set a breakpoint at the LMA. | |
2562 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2563 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2564 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2565 | bl->owner->number); |
879bfdc2 DJ |
2566 | else |
2567 | { | |
35df4500 TJB |
2568 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2569 | bl->section); | |
879bfdc2 | 2570 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2571 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2572 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2573 | |
2574 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2575 | TRY |
0000e5cc PA |
2576 | { |
2577 | int val; | |
2578 | ||
579c6ad9 | 2579 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2580 | = breakpoint_kind (bl, &addr); |
2581 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2582 | val = target_insert_breakpoint (bl->gdbarch, |
2583 | &bl->overlay_target_info); | |
2584 | if (val) | |
688fca4f PA |
2585 | bp_excpt |
2586 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2587 | } |
492d29ea | 2588 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc | 2589 | { |
688fca4f | 2590 | bp_excpt = e; |
0000e5cc | 2591 | } |
492d29ea | 2592 | END_CATCH |
0000e5cc | 2593 | |
688fca4f | 2594 | if (bp_excpt.reason != 0) |
99361f52 | 2595 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2596 | "Overlay breakpoint %d " |
2597 | "failed: in ROM?\n", | |
35df4500 | 2598 | bl->owner->number); |
879bfdc2 DJ |
2599 | } |
2600 | } | |
2601 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2602 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2603 | { |
2604 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2605 | TRY |
dd61ec5c | 2606 | { |
0000e5cc PA |
2607 | int val; |
2608 | ||
dd61ec5c | 2609 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2610 | if (val) |
688fca4f | 2611 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2612 | } |
492d29ea | 2613 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2614 | { |
688fca4f | 2615 | bp_excpt = e; |
dd61ec5c | 2616 | } |
492d29ea | 2617 | END_CATCH |
879bfdc2 DJ |
2618 | } |
2619 | else | |
2620 | { | |
2621 | /* No. This breakpoint will not be inserted. | |
2622 | No error, but do not mark the bp as 'inserted'. */ | |
2623 | return 0; | |
2624 | } | |
2625 | } | |
2626 | ||
688fca4f | 2627 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2628 | { |
2629 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2630 | |
2631 | /* In some cases, we might not be able to insert a | |
2632 | breakpoint in a shared library that has already been | |
2633 | removed, but we have not yet processed the shlib unload | |
2634 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2635 | breakpoint insertion themselves can't tell why the |
2636 | breakpoint insertion failed (e.g., the remote target | |
2637 | doesn't define error codes), so we must treat generic | |
2638 | errors as memory errors. */ | |
688fca4f PA |
2639 | if (bp_excpt.reason == RETURN_ERROR |
2640 | && (bp_excpt.error == GENERIC_ERROR | |
2641 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2642 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2643 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2644 | || shared_objfile_contains_address_p (bl->pspace, |
2645 | bl->address))) | |
879bfdc2 | 2646 | { |
4a64f543 | 2647 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2648 | bl->shlib_disabled = 1; |
76727919 | 2649 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2650 | if (!*disabled_breaks) |
2651 | { | |
2652 | fprintf_unfiltered (tmp_error_stream, | |
2653 | "Cannot insert breakpoint %d.\n", | |
2654 | bl->owner->number); | |
2655 | fprintf_unfiltered (tmp_error_stream, | |
2656 | "Temporarily disabling shared " | |
2657 | "library breakpoints:\n"); | |
2658 | } | |
2659 | *disabled_breaks = 1; | |
879bfdc2 | 2660 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2661 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2662 | return 0; |
879bfdc2 DJ |
2663 | } |
2664 | else | |
879bfdc2 | 2665 | { |
35df4500 | 2666 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2667 | { |
0000e5cc | 2668 | *hw_breakpoint_error = 1; |
688fca4f | 2669 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2670 | fprintf_unfiltered (tmp_error_stream, |
2671 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2672 | bl->owner->number, |
2673 | bp_excpt.message ? ":" : ".\n"); | |
2674 | if (bp_excpt.message != NULL) | |
2675 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
2676 | bp_excpt.message); | |
879bfdc2 DJ |
2677 | } |
2678 | else | |
2679 | { | |
688fca4f | 2680 | if (bp_excpt.message == NULL) |
0000e5cc | 2681 | { |
1ccbe998 | 2682 | std::string message |
0000e5cc PA |
2683 | = memory_error_message (TARGET_XFER_E_IO, |
2684 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2685 | |
2686 | fprintf_unfiltered (tmp_error_stream, | |
2687 | "Cannot insert breakpoint %d.\n" | |
2688 | "%s\n", | |
1ccbe998 | 2689 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2690 | } |
2691 | else | |
2692 | { | |
2693 | fprintf_unfiltered (tmp_error_stream, | |
2694 | "Cannot insert breakpoint %d: %s\n", | |
2695 | bl->owner->number, | |
688fca4f | 2696 | bp_excpt.message); |
0000e5cc | 2697 | } |
879bfdc2 | 2698 | } |
0000e5cc | 2699 | return 1; |
879bfdc2 DJ |
2700 | |
2701 | } | |
2702 | } | |
2703 | else | |
35df4500 | 2704 | bl->inserted = 1; |
879bfdc2 | 2705 | |
0000e5cc | 2706 | return 0; |
879bfdc2 DJ |
2707 | } |
2708 | ||
35df4500 | 2709 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2710 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2711 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2712 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2713 | { |
0000e5cc PA |
2714 | int val; |
2715 | ||
77b06cd7 TJB |
2716 | gdb_assert (bl->owner->ops != NULL |
2717 | && bl->owner->ops->insert_location != NULL); | |
2718 | ||
2719 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2720 | |
2721 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2722 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2723 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2724 | { |
2725 | struct bp_location *loc, **loc_temp; | |
2726 | ||
2727 | /* But don't try to insert it, if there's already another | |
2728 | hw_access location that would be considered a duplicate | |
2729 | of this one. */ | |
2730 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2731 | if (loc != bl |
85d721b8 | 2732 | && loc->watchpoint_type == hw_access |
35df4500 | 2733 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2734 | { |
35df4500 TJB |
2735 | bl->duplicate = 1; |
2736 | bl->inserted = 1; | |
2737 | bl->target_info = loc->target_info; | |
2738 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2739 | val = 0; |
2740 | break; | |
2741 | } | |
2742 | ||
2743 | if (val == 1) | |
2744 | { | |
77b06cd7 TJB |
2745 | bl->watchpoint_type = hw_access; |
2746 | val = bl->owner->ops->insert_location (bl); | |
2747 | ||
2748 | if (val) | |
2749 | /* Back to the original value. */ | |
2750 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2751 | } |
2752 | } | |
2753 | ||
35df4500 | 2754 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2755 | } |
2756 | ||
35df4500 | 2757 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2758 | { |
0000e5cc PA |
2759 | int val; |
2760 | ||
77b06cd7 TJB |
2761 | gdb_assert (bl->owner->ops != NULL |
2762 | && bl->owner->ops->insert_location != NULL); | |
2763 | ||
2764 | val = bl->owner->ops->insert_location (bl); | |
2765 | if (val) | |
2766 | { | |
2767 | bl->owner->enable_state = bp_disabled; | |
2768 | ||
2769 | if (val == 1) | |
2770 | warning (_("\ | |
2771 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2772 | of catchpoint."), bl->owner->number); | |
2773 | else | |
2774 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2775 | } | |
2776 | ||
2777 | bl->inserted = (val == 0); | |
1640b821 DJ |
2778 | |
2779 | /* We've already printed an error message if there was a problem | |
2780 | inserting this catchpoint, and we've disabled the catchpoint, | |
2781 | so just return success. */ | |
2782 | return 0; | |
879bfdc2 DJ |
2783 | } |
2784 | ||
2785 | return 0; | |
2786 | } | |
2787 | ||
6c95b8df PA |
2788 | /* This function is called when program space PSPACE is about to be |
2789 | deleted. It takes care of updating breakpoints to not reference | |
2790 | PSPACE anymore. */ | |
2791 | ||
2792 | void | |
2793 | breakpoint_program_space_exit (struct program_space *pspace) | |
2794 | { | |
2795 | struct breakpoint *b, *b_temp; | |
876fa593 | 2796 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2797 | |
2798 | /* Remove any breakpoint that was set through this program space. */ | |
2799 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2800 | { | |
2801 | if (b->pspace == pspace) | |
2802 | delete_breakpoint (b); | |
2803 | } | |
2804 | ||
2805 | /* Breakpoints set through other program spaces could have locations | |
2806 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2807 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2808 | { |
2809 | struct bp_location *tmp; | |
2810 | ||
2811 | if (loc->pspace == pspace) | |
2812 | { | |
2bdf28a0 | 2813 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2814 | if (loc->owner->loc == loc) |
2815 | loc->owner->loc = loc->next; | |
2816 | else | |
2817 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2818 | if (tmp->next == loc) | |
2819 | { | |
2820 | tmp->next = loc->next; | |
2821 | break; | |
2822 | } | |
2823 | } | |
2824 | } | |
2825 | ||
2826 | /* Now update the global location list to permanently delete the | |
2827 | removed locations above. */ | |
44702360 | 2828 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2829 | } |
2830 | ||
74960c60 VP |
2831 | /* Make sure all breakpoints are inserted in inferior. |
2832 | Throws exception on any error. | |
2833 | A breakpoint that is already inserted won't be inserted | |
2834 | again, so calling this function twice is safe. */ | |
2835 | void | |
2836 | insert_breakpoints (void) | |
2837 | { | |
2838 | struct breakpoint *bpt; | |
2839 | ||
2840 | ALL_BREAKPOINTS (bpt) | |
2841 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2842 | { |
2843 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2844 | ||
2845 | update_watchpoint (w, 0 /* don't reparse. */); | |
2846 | } | |
74960c60 | 2847 | |
04086b45 PA |
2848 | /* Updating watchpoints creates new locations, so update the global |
2849 | location list. Explicitly tell ugll to insert locations and | |
2850 | ignore breakpoints_always_inserted_mode. */ | |
2851 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2852 | } |
2853 | ||
20388dd6 YQ |
2854 | /* Invoke CALLBACK for each of bp_location. */ |
2855 | ||
2856 | void | |
2857 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2858 | { | |
2859 | struct bp_location *loc, **loc_tmp; | |
2860 | ||
2861 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2862 | { | |
2863 | callback (loc, NULL); | |
2864 | } | |
2865 | } | |
2866 | ||
b775012e LM |
2867 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2868 | target. It is the case with deleting and disabling of breakpoints when using | |
2869 | always-inserted mode. */ | |
2870 | ||
2871 | static void | |
2872 | update_inserted_breakpoint_locations (void) | |
2873 | { | |
2874 | struct bp_location *bl, **blp_tmp; | |
2875 | int error_flag = 0; | |
2876 | int val = 0; | |
2877 | int disabled_breaks = 0; | |
2878 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2879 | int hw_bp_details_reported = 0; |
b775012e | 2880 | |
d7e74731 | 2881 | string_file tmp_error_stream; |
b775012e LM |
2882 | |
2883 | /* Explicitly mark the warning -- this will only be printed if | |
2884 | there was an error. */ | |
d7e74731 | 2885 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2886 | |
5ed8105e | 2887 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2888 | |
2889 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2890 | { | |
2891 | /* We only want to update software breakpoints and hardware | |
2892 | breakpoints. */ | |
2893 | if (!is_breakpoint (bl->owner)) | |
2894 | continue; | |
2895 | ||
2896 | /* We only want to update locations that are already inserted | |
2897 | and need updating. This is to avoid unwanted insertion during | |
2898 | deletion of breakpoints. */ | |
4daf1902 | 2899 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2900 | continue; |
2901 | ||
2902 | switch_to_program_space_and_thread (bl->pspace); | |
2903 | ||
2904 | /* For targets that support global breakpoints, there's no need | |
2905 | to select an inferior to insert breakpoint to. In fact, even | |
2906 | if we aren't attached to any process yet, we should still | |
2907 | insert breakpoints. */ | |
f5656ead | 2908 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2909 | && inferior_ptid == null_ptid) |
b775012e LM |
2910 | continue; |
2911 | ||
d7e74731 | 2912 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2913 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2914 | if (val) |
2915 | error_flag = val; | |
2916 | } | |
2917 | ||
2918 | if (error_flag) | |
2919 | { | |
223ffa71 | 2920 | target_terminal::ours_for_output (); |
b775012e LM |
2921 | error_stream (tmp_error_stream); |
2922 | } | |
b775012e LM |
2923 | } |
2924 | ||
c30eee59 | 2925 | /* Used when starting or continuing the program. */ |
c906108c | 2926 | |
74960c60 VP |
2927 | static void |
2928 | insert_breakpoint_locations (void) | |
c906108c | 2929 | { |
a5606eee | 2930 | struct breakpoint *bpt; |
35df4500 | 2931 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2932 | int error_flag = 0; |
c906108c | 2933 | int val = 0; |
3fbb6ffa | 2934 | int disabled_breaks = 0; |
81d0cc19 | 2935 | int hw_breakpoint_error = 0; |
dd61ec5c | 2936 | int hw_bp_error_explained_already = 0; |
c906108c | 2937 | |
d7e74731 PA |
2938 | string_file tmp_error_stream; |
2939 | ||
81d0cc19 GS |
2940 | /* Explicitly mark the warning -- this will only be printed if |
2941 | there was an error. */ | |
d7e74731 | 2942 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2943 | |
5ed8105e | 2944 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2945 | |
35df4500 | 2946 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2947 | { |
b775012e | 2948 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2949 | continue; |
2950 | ||
4a64f543 MS |
2951 | /* There is no point inserting thread-specific breakpoints if |
2952 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2953 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2954 | if (bl->owner->thread != -1 |
5d5658a1 | 2955 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2956 | continue; |
2957 | ||
35df4500 | 2958 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2959 | |
2960 | /* For targets that support global breakpoints, there's no need | |
2961 | to select an inferior to insert breakpoint to. In fact, even | |
2962 | if we aren't attached to any process yet, we should still | |
2963 | insert breakpoints. */ | |
f5656ead | 2964 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2965 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2966 | continue; |
2967 | ||
d7e74731 | 2968 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2969 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2970 | if (val) |
eacd795a | 2971 | error_flag = val; |
879bfdc2 | 2972 | } |
c906108c | 2973 | |
4a64f543 MS |
2974 | /* If we failed to insert all locations of a watchpoint, remove |
2975 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2976 | ALL_BREAKPOINTS (bpt) |
2977 | { | |
2978 | int some_failed = 0; | |
2979 | struct bp_location *loc; | |
2980 | ||
2981 | if (!is_hardware_watchpoint (bpt)) | |
2982 | continue; | |
2983 | ||
d6b74ac4 | 2984 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2985 | continue; |
74960c60 VP |
2986 | |
2987 | if (bpt->disposition == disp_del_at_next_stop) | |
2988 | continue; | |
a5606eee VP |
2989 | |
2990 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2991 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2992 | { |
2993 | some_failed = 1; | |
2994 | break; | |
2995 | } | |
2996 | if (some_failed) | |
2997 | { | |
2998 | for (loc = bpt->loc; loc; loc = loc->next) | |
2999 | if (loc->inserted) | |
834c0d03 | 3000 | remove_breakpoint (loc); |
a5606eee VP |
3001 | |
3002 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3003 | tmp_error_stream.printf ("Could not insert " |
3004 | "hardware watchpoint %d.\n", | |
3005 | bpt->number); | |
eacd795a | 3006 | error_flag = -1; |
a5606eee VP |
3007 | } |
3008 | } | |
3009 | ||
eacd795a | 3010 | if (error_flag) |
81d0cc19 GS |
3011 | { |
3012 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3013 | message about possibly exhausted resources. */ | |
dd61ec5c | 3014 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3015 | { |
d7e74731 | 3016 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3017 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3018 | } |
223ffa71 | 3019 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3020 | error_stream (tmp_error_stream); |
3021 | } | |
c906108c SS |
3022 | } |
3023 | ||
c30eee59 TJB |
3024 | /* Used when the program stops. |
3025 | Returns zero if successful, or non-zero if there was a problem | |
3026 | removing a breakpoint location. */ | |
3027 | ||
c906108c | 3028 | int |
fba45db2 | 3029 | remove_breakpoints (void) |
c906108c | 3030 | { |
35df4500 | 3031 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3032 | int val = 0; |
c906108c | 3033 | |
35df4500 | 3034 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3035 | { |
1e4d1764 | 3036 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3037 | val |= remove_breakpoint (bl); |
c5aa993b | 3038 | } |
3a1bae8e | 3039 | return val; |
c906108c SS |
3040 | } |
3041 | ||
49fa26b0 PA |
3042 | /* When a thread exits, remove breakpoints that are related to |
3043 | that thread. */ | |
3044 | ||
3045 | static void | |
3046 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3047 | { | |
3048 | struct breakpoint *b, *b_tmp; | |
3049 | ||
3050 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3051 | { | |
5d5658a1 | 3052 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3053 | { |
3054 | b->disposition = disp_del_at_next_stop; | |
3055 | ||
3056 | printf_filtered (_("\ | |
43792cf0 PA |
3057 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3058 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3059 | |
3060 | /* Hide it from the user. */ | |
3061 | b->number = 0; | |
3062 | } | |
3063 | } | |
3064 | } | |
3065 | ||
00431a78 | 3066 | /* Remove breakpoints of inferior INF. */ |
6c95b8df PA |
3067 | |
3068 | int | |
00431a78 | 3069 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3070 | { |
35df4500 | 3071 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3072 | int val; |
6c95b8df | 3073 | |
35df4500 | 3074 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3075 | { |
35df4500 | 3076 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3077 | continue; |
3078 | ||
fc126975 | 3079 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3080 | { |
834c0d03 | 3081 | val = remove_breakpoint (bl); |
6c95b8df PA |
3082 | if (val != 0) |
3083 | return val; | |
3084 | } | |
3085 | } | |
3086 | return 0; | |
3087 | } | |
3088 | ||
e58b0e63 PA |
3089 | static int internal_breakpoint_number = -1; |
3090 | ||
84f4c1fe PM |
3091 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3092 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3093 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3094 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3095 | breakpoint_count and that value incremented. Internal breakpoints |
3096 | do not set the internal var bpnum. */ | |
3097 | static void | |
3098 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3099 | { | |
3100 | if (internal) | |
3101 | b->number = internal_breakpoint_number--; | |
3102 | else | |
3103 | { | |
3104 | set_breakpoint_count (breakpoint_count + 1); | |
3105 | b->number = breakpoint_count; | |
3106 | } | |
3107 | } | |
3108 | ||
e62c965a | 3109 | static struct breakpoint * |
a6d9a66e | 3110 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3111 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3112 | const struct breakpoint_ops *ops) |
e62c965a | 3113 | { |
51abb421 | 3114 | symtab_and_line sal; |
e62c965a PP |
3115 | sal.pc = address; |
3116 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3117 | sal.pspace = current_program_space; |
e62c965a | 3118 | |
51abb421 | 3119 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3120 | b->number = internal_breakpoint_number--; |
3121 | b->disposition = disp_donttouch; | |
3122 | ||
3123 | return b; | |
3124 | } | |
3125 | ||
17450429 PP |
3126 | static const char *const longjmp_names[] = |
3127 | { | |
3128 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3129 | }; | |
3130 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3131 | ||
3132 | /* Per-objfile data private to breakpoint.c. */ | |
3133 | struct breakpoint_objfile_data | |
3134 | { | |
3135 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3136 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3137 | |
3138 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3139 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3140 | |
28106bc2 | 3141 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3142 | int longjmp_searched = 0; |
28106bc2 | 3143 | |
45461e0d SM |
3144 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3145 | references. */ | |
3146 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3147 | |
17450429 | 3148 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3149 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3150 | |
3151 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3152 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3153 | |
3154 | /* True if we have looked for exception probes. */ | |
43dce439 | 3155 | int exception_searched = 0; |
28106bc2 | 3156 | |
45461e0d SM |
3157 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3158 | references. */ | |
3159 | std::vector<probe *> exception_probes; | |
17450429 PP |
3160 | }; |
3161 | ||
3162 | static const struct objfile_data *breakpoint_objfile_key; | |
3163 | ||
3164 | /* Minimal symbol not found sentinel. */ | |
3165 | static struct minimal_symbol msym_not_found; | |
3166 | ||
3167 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3168 | ||
3169 | static int | |
3170 | msym_not_found_p (const struct minimal_symbol *msym) | |
3171 | { | |
3172 | return msym == &msym_not_found; | |
3173 | } | |
3174 | ||
3175 | /* Return per-objfile data needed by breakpoint.c. | |
3176 | Allocate the data if necessary. */ | |
3177 | ||
3178 | static struct breakpoint_objfile_data * | |
3179 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3180 | { | |
3181 | struct breakpoint_objfile_data *bp_objfile_data; | |
3182 | ||
9a3c8263 SM |
3183 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3184 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3185 | if (bp_objfile_data == NULL) |
3186 | { | |
43dce439 | 3187 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3188 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3189 | } | |
3190 | return bp_objfile_data; | |
3191 | } | |
3192 | ||
28106bc2 | 3193 | static void |
43dce439 | 3194 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3195 | { |
9a3c8263 SM |
3196 | struct breakpoint_objfile_data *bp_objfile_data |
3197 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3198 | |
43dce439 | 3199 | delete bp_objfile_data; |
28106bc2 SDJ |
3200 | } |
3201 | ||
e62c965a | 3202 | static void |
af02033e | 3203 | create_overlay_event_breakpoint (void) |
e62c965a | 3204 | { |
69de3c6a | 3205 | struct objfile *objfile; |
af02033e | 3206 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3207 | |
69de3c6a PP |
3208 | ALL_OBJFILES (objfile) |
3209 | { | |
3210 | struct breakpoint *b; | |
17450429 PP |
3211 | struct breakpoint_objfile_data *bp_objfile_data; |
3212 | CORE_ADDR addr; | |
67994074 | 3213 | struct explicit_location explicit_loc; |
69de3c6a | 3214 | |
17450429 PP |
3215 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3216 | ||
3b7344d5 | 3217 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3218 | continue; |
3219 | ||
3b7344d5 | 3220 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3221 | { |
3b7344d5 | 3222 | struct bound_minimal_symbol m; |
17450429 PP |
3223 | |
3224 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3225 | if (m.minsym == NULL) |
17450429 PP |
3226 | { |
3227 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3228 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3229 | continue; |
3230 | } | |
3231 | bp_objfile_data->overlay_msym = m; | |
3232 | } | |
e62c965a | 3233 | |
77e371c0 | 3234 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3235 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3236 | bp_overlay_event, |
3237 | &internal_breakpoint_ops); | |
67994074 KS |
3238 | initialize_explicit_location (&explicit_loc); |
3239 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3240 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3241 | |
69de3c6a PP |
3242 | if (overlay_debugging == ovly_auto) |
3243 | { | |
3244 | b->enable_state = bp_enabled; | |
3245 | overlay_events_enabled = 1; | |
3246 | } | |
3247 | else | |
3248 | { | |
3249 | b->enable_state = bp_disabled; | |
3250 | overlay_events_enabled = 0; | |
3251 | } | |
e62c965a | 3252 | } |
e62c965a PP |
3253 | } |
3254 | ||
0fd8e87f | 3255 | static void |
af02033e | 3256 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3257 | { |
6c95b8df | 3258 | struct program_space *pspace; |
6c95b8df | 3259 | |
5ed8105e | 3260 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3261 | |
6c95b8df | 3262 | ALL_PSPACES (pspace) |
af02033e PP |
3263 | { |
3264 | struct objfile *objfile; | |
3265 | ||
3266 | set_current_program_space (pspace); | |
3267 | ||
3268 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3269 | { |
af02033e PP |
3270 | int i; |
3271 | struct gdbarch *gdbarch; | |
17450429 | 3272 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3273 | |
af02033e | 3274 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3275 | |
17450429 PP |
3276 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3277 | ||
28106bc2 SDJ |
3278 | if (!bp_objfile_data->longjmp_searched) |
3279 | { | |
45461e0d SM |
3280 | std::vector<probe *> ret |
3281 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3282 | |
45461e0d | 3283 | if (!ret.empty ()) |
25f9533e SDJ |
3284 | { |
3285 | /* We are only interested in checking one element. */ | |
45461e0d | 3286 | probe *p = ret[0]; |
25f9533e | 3287 | |
935676c9 | 3288 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3289 | { |
3290 | /* We cannot use the probe interface here, because it does | |
3291 | not know how to evaluate arguments. */ | |
45461e0d | 3292 | ret.clear (); |
25f9533e SDJ |
3293 | } |
3294 | } | |
3295 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3296 | bp_objfile_data->longjmp_searched = 1; |
3297 | } | |
3298 | ||
45461e0d | 3299 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3300 | { |
45461e0d | 3301 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3302 | { |
3303 | struct breakpoint *b; | |
3304 | ||
729662a5 | 3305 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3306 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3307 | bp_longjmp_master, |
3308 | &internal_breakpoint_ops); | |
d28cd78a | 3309 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3310 | b->enable_state = bp_disabled; |
3311 | } | |
3312 | ||
3313 | continue; | |
3314 | } | |
3315 | ||
0569175e TSD |
3316 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3317 | continue; | |
3318 | ||
17450429 | 3319 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3320 | { |
3321 | struct breakpoint *b; | |
af02033e | 3322 | const char *func_name; |
17450429 | 3323 | CORE_ADDR addr; |
67994074 | 3324 | struct explicit_location explicit_loc; |
6c95b8df | 3325 | |
3b7344d5 | 3326 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3327 | continue; |
0fd8e87f | 3328 | |
17450429 | 3329 | func_name = longjmp_names[i]; |
3b7344d5 | 3330 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3331 | { |
3b7344d5 | 3332 | struct bound_minimal_symbol m; |
17450429 PP |
3333 | |
3334 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3335 | if (m.minsym == NULL) |
17450429 PP |
3336 | { |
3337 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3338 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3339 | continue; |
3340 | } | |
3341 | bp_objfile_data->longjmp_msym[i] = m; | |
3342 | } | |
3343 | ||
77e371c0 | 3344 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3345 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3346 | &internal_breakpoint_ops); | |
67994074 KS |
3347 | initialize_explicit_location (&explicit_loc); |
3348 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3349 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3350 | b->enable_state = bp_disabled; |
3351 | } | |
0fd8e87f | 3352 | } |
af02033e | 3353 | } |
0fd8e87f UW |
3354 | } |
3355 | ||
af02033e | 3356 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3357 | static void |
af02033e | 3358 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3359 | { |
3360 | struct program_space *pspace; | |
af02033e | 3361 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3362 | |
5ed8105e | 3363 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3364 | |
3365 | ALL_PSPACES (pspace) | |
17450429 PP |
3366 | { |
3367 | struct objfile *objfile; | |
3368 | CORE_ADDR addr; | |
3369 | ||
3370 | set_current_program_space (pspace); | |
3371 | ||
aa7d318d TT |
3372 | ALL_OBJFILES (objfile) |
3373 | { | |
3374 | struct breakpoint *b; | |
17450429 | 3375 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3376 | struct explicit_location explicit_loc; |
aa7d318d | 3377 | |
17450429 | 3378 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3379 | |
3b7344d5 | 3380 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3381 | continue; |
3382 | ||
3b7344d5 | 3383 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3384 | { |
3b7344d5 | 3385 | struct bound_minimal_symbol m; |
17450429 PP |
3386 | |
3387 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3388 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3389 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3390 | { |
3391 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3392 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3393 | continue; |
3394 | } | |
3395 | bp_objfile_data->terminate_msym = m; | |
3396 | } | |
aa7d318d | 3397 | |
77e371c0 | 3398 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3399 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3400 | bp_std_terminate_master, |
3401 | &internal_breakpoint_ops); | |
67994074 KS |
3402 | initialize_explicit_location (&explicit_loc); |
3403 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3404 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3405 | b->enable_state = bp_disabled; |
3406 | } | |
17450429 | 3407 | } |
aa7d318d TT |
3408 | } |
3409 | ||
186c406b TT |
3410 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3411 | ||
70221824 | 3412 | static void |
186c406b TT |
3413 | create_exception_master_breakpoint (void) |
3414 | { | |
3415 | struct objfile *objfile; | |
17450429 | 3416 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3417 | |
3418 | ALL_OBJFILES (objfile) | |
3419 | { | |
17450429 PP |
3420 | struct breakpoint *b; |
3421 | struct gdbarch *gdbarch; | |
3422 | struct breakpoint_objfile_data *bp_objfile_data; | |
3423 | CORE_ADDR addr; | |
67994074 | 3424 | struct explicit_location explicit_loc; |
17450429 PP |
3425 | |
3426 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3427 | ||
28106bc2 SDJ |
3428 | /* We prefer the SystemTap probe point if it exists. */ |
3429 | if (!bp_objfile_data->exception_searched) | |
3430 | { | |
45461e0d SM |
3431 | std::vector<probe *> ret |
3432 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3433 | |
45461e0d | 3434 | if (!ret.empty ()) |
25f9533e SDJ |
3435 | { |
3436 | /* We are only interested in checking one element. */ | |
45461e0d | 3437 | probe *p = ret[0]; |
25f9533e | 3438 | |
935676c9 | 3439 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3440 | { |
3441 | /* We cannot use the probe interface here, because it does | |
3442 | not know how to evaluate arguments. */ | |
45461e0d | 3443 | ret.clear (); |
25f9533e SDJ |
3444 | } |
3445 | } | |
3446 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3447 | bp_objfile_data->exception_searched = 1; |
3448 | } | |
3449 | ||
45461e0d | 3450 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3451 | { |
b926417a | 3452 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3453 | |
3454 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3455 | { |
729662a5 | 3456 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3457 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3458 | bp_exception_master, |
3459 | &internal_breakpoint_ops); | |
d28cd78a | 3460 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3461 | b->enable_state = bp_disabled; |
3462 | } | |
3463 | ||
3464 | continue; | |
3465 | } | |
3466 | ||
3467 | /* Otherwise, try the hook function. */ | |
3468 | ||
3b7344d5 | 3469 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3470 | continue; |
3471 | ||
3472 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3473 | |
3b7344d5 | 3474 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3475 | { |
3b7344d5 | 3476 | struct bound_minimal_symbol debug_hook; |
186c406b | 3477 | |
17450429 | 3478 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3479 | if (debug_hook.minsym == NULL) |
17450429 | 3480 | { |
3b7344d5 | 3481 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3482 | continue; |
3483 | } | |
3484 | ||
3485 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3486 | } |
17450429 | 3487 | |
77e371c0 | 3488 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3489 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3490 | current_top_target ()); | |
06edf0c0 PA |
3491 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3492 | &internal_breakpoint_ops); | |
67994074 KS |
3493 | initialize_explicit_location (&explicit_loc); |
3494 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3495 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3496 | b->enable_state = bp_disabled; |
186c406b | 3497 | } |
186c406b TT |
3498 | } |
3499 | ||
9ef9e6a6 KS |
3500 | /* Does B have a location spec? */ |
3501 | ||
3502 | static int | |
3503 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3504 | { | |
d28cd78a | 3505 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3506 | } |
3507 | ||
c906108c | 3508 | void |
fba45db2 | 3509 | update_breakpoints_after_exec (void) |
c906108c | 3510 | { |
35df4500 | 3511 | struct breakpoint *b, *b_tmp; |
876fa593 | 3512 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3513 | |
25b22b0a PA |
3514 | /* We're about to delete breakpoints from GDB's lists. If the |
3515 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3516 | writing the breakpoints' "shadow contents" back into memory. The | |
3517 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3518 | do that. Instead, the target is responsible from marking | |
3519 | breakpoints out as soon as it detects an exec. We don't do that | |
3520 | here instead, because there may be other attempts to delete | |
3521 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3522 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3523 | if (bploc->pspace == current_program_space) |
3524 | gdb_assert (!bploc->inserted); | |
c906108c | 3525 | |
35df4500 | 3526 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3527 | { |
6c95b8df PA |
3528 | if (b->pspace != current_program_space) |
3529 | continue; | |
3530 | ||
4a64f543 | 3531 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3532 | if (b->type == bp_shlib_event) |
3533 | { | |
3534 | delete_breakpoint (b); | |
3535 | continue; | |
3536 | } | |
c906108c | 3537 | |
4a64f543 | 3538 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3539 | if (b->type == bp_jit_event) |
3540 | { | |
3541 | delete_breakpoint (b); | |
3542 | continue; | |
3543 | } | |
3544 | ||
1900040c | 3545 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3546 | as must overlay event and longjmp master breakpoints. */ |
3547 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3548 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3549 | || b->type == bp_exception_master) | |
c4093a6a JM |
3550 | { |
3551 | delete_breakpoint (b); | |
3552 | continue; | |
3553 | } | |
3554 | ||
4a64f543 | 3555 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3556 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3557 | { |
3558 | delete_breakpoint (b); | |
3559 | continue; | |
3560 | } | |
3561 | ||
7c16b83e PA |
3562 | /* Just like single-step breakpoints. */ |
3563 | if (b->type == bp_single_step) | |
3564 | { | |
3565 | delete_breakpoint (b); | |
3566 | continue; | |
3567 | } | |
3568 | ||
611c83ae PA |
3569 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3570 | after an exec. */ | |
186c406b | 3571 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3572 | || b->type == bp_longjmp_call_dummy |
186c406b | 3573 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3574 | { |
3575 | delete_breakpoint (b); | |
3576 | continue; | |
3577 | } | |
3578 | ||
ce78b96d JB |
3579 | if (b->type == bp_catchpoint) |
3580 | { | |
3581 | /* For now, none of the bp_catchpoint breakpoints need to | |
3582 | do anything at this point. In the future, if some of | |
3583 | the catchpoints need to something, we will need to add | |
3584 | a new method, and call this method from here. */ | |
3585 | continue; | |
3586 | } | |
3587 | ||
c5aa993b JM |
3588 | /* bp_finish is a special case. The only way we ought to be able |
3589 | to see one of these when an exec() has happened, is if the user | |
3590 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3591 | carries them to the call-site of the current callee, by setting | |
3592 | a temporary bp there and resuming. But in this case, the finish | |
3593 | will carry them entirely through the vfork & exec. | |
3594 | ||
3595 | We don't want to allow a bp_finish to remain inserted now. But | |
3596 | we can't safely delete it, 'cause finish_command has a handle to | |
3597 | the bp on a bpstat, and will later want to delete it. There's a | |
3598 | chance (and I've seen it happen) that if we delete the bp_finish | |
3599 | here, that its storage will get reused by the time finish_command | |
3600 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3601 | We really must allow finish_command to delete a bp_finish. | |
3602 | ||
e5dd4106 | 3603 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3604 | it's safe to delete something others may have handles to?" |
3605 | problem, what we'll do here is just uninsert the bp_finish, and | |
3606 | let finish_command delete it. | |
3607 | ||
3608 | (We know the bp_finish is "doomed" in the sense that it's | |
3609 | momentary, and will be deleted as soon as finish_command sees | |
3610 | the inferior stopped. So it doesn't matter that the bp's | |
3611 | address is probably bogus in the new a.out, unlike e.g., the | |
3612 | solib breakpoints.) */ | |
c5aa993b | 3613 | |
c5aa993b JM |
3614 | if (b->type == bp_finish) |
3615 | { | |
3616 | continue; | |
3617 | } | |
3618 | ||
3619 | /* Without a symbolic address, we have little hope of the | |
3620 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3621 | a.out. */ |
9ef9e6a6 | 3622 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3623 | { |
3624 | delete_breakpoint (b); | |
3625 | continue; | |
3626 | } | |
c5aa993b | 3627 | } |
c906108c SS |
3628 | } |
3629 | ||
3630 | int | |
d80ee84f | 3631 | detach_breakpoints (ptid_t ptid) |
c906108c | 3632 | { |
35df4500 | 3633 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3634 | int val = 0; |
2989a365 | 3635 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3636 | struct inferior *inf = current_inferior (); |
c5aa993b | 3637 | |
e99b03dc | 3638 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3639 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3640 | |
6c95b8df | 3641 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3642 | inferior_ptid = ptid; |
35df4500 | 3643 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3644 | { |
35df4500 | 3645 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3646 | continue; |
3647 | ||
bd9673a4 PW |
3648 | /* This function must physically remove breakpoints locations |
3649 | from the specified ptid, without modifying the breakpoint | |
3650 | package's state. Locations of type bp_loc_other are only | |
3651 | maintained at GDB side. So, there is no need to remove | |
3652 | these bp_loc_other locations. Moreover, removing these | |
3653 | would modify the breakpoint package's state. */ | |
3654 | if (bl->loc_type == bp_loc_other) | |
3655 | continue; | |
3656 | ||
35df4500 | 3657 | if (bl->inserted) |
b2b6a7da | 3658 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3659 | } |
d03285ec | 3660 | |
3a1bae8e | 3661 | return val; |
c906108c SS |
3662 | } |
3663 | ||
35df4500 | 3664 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3665 | Note that this is used to detach breakpoints from a child fork. |
3666 | When we get here, the child isn't in the inferior list, and neither | |
3667 | do we have objects to represent its address space --- we should | |
35df4500 | 3668 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3669 | |
c906108c | 3670 | static int |
b2b6a7da | 3671 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3672 | { |
3673 | int val; | |
c5aa993b | 3674 | |
35df4500 TJB |
3675 | /* BL is never in moribund_locations by our callers. */ |
3676 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3677 | |
74960c60 VP |
3678 | /* The type of none suggests that owner is actually deleted. |
3679 | This should not ever happen. */ | |
35df4500 | 3680 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3681 | |
35df4500 TJB |
3682 | if (bl->loc_type == bp_loc_software_breakpoint |
3683 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3684 | { |
c02f5703 MS |
3685 | /* "Normal" instruction breakpoint: either the standard |
3686 | trap-instruction bp (bp_breakpoint), or a | |
3687 | bp_hardware_breakpoint. */ | |
3688 | ||
3689 | /* First check to see if we have to handle an overlay. */ | |
3690 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3691 | || bl->section == NULL |
3692 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3693 | { |
3694 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3695 | |
3696 | /* If we're trying to uninsert a memory breakpoint that we | |
3697 | know is set in a dynamic object that is marked | |
3698 | shlib_disabled, then either the dynamic object was | |
3699 | removed with "remove-symbol-file" or with | |
3700 | "nosharedlibrary". In the former case, we don't know | |
3701 | whether another dynamic object might have loaded over the | |
3702 | breakpoint's address -- the user might well let us know | |
3703 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3704 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3705 | list of dynamically loaded objects). If we have the |
3706 | breakpoint's shadow memory, that is, this is a software | |
3707 | breakpoint managed by GDB, check whether the breakpoint | |
3708 | is still inserted in memory, to avoid overwriting wrong | |
3709 | code with stale saved shadow contents. Note that HW | |
3710 | breakpoints don't have shadow memory, as they're | |
3711 | implemented using a mechanism that is not dependent on | |
3712 | being able to modify the target's memory, and as such | |
3713 | they should always be removed. */ | |
3714 | if (bl->shlib_disabled | |
3715 | && bl->target_info.shadow_len != 0 | |
3716 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3717 | val = 0; | |
3718 | else | |
73971819 | 3719 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3720 | } |
c906108c SS |
3721 | else |
3722 | { | |
4a64f543 | 3723 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3724 | Did we set a breakpoint at the LMA? */ |
3725 | if (!overlay_events_enabled) | |
3726 | { | |
3727 | /* Yes -- overlay event support is not active, so we | |
3728 | should have set a breakpoint at the LMA. Remove it. | |
3729 | */ | |
c02f5703 MS |
3730 | /* Ignore any failures: if the LMA is in ROM, we will |
3731 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3732 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3733 | target_remove_hw_breakpoint (bl->gdbarch, | |
3734 | &bl->overlay_target_info); | |
c02f5703 | 3735 | else |
35df4500 | 3736 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3737 | &bl->overlay_target_info, |
3738 | reason); | |
c02f5703 MS |
3739 | } |
3740 | /* Did we set a breakpoint at the VMA? | |
3741 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3742 | if (bl->inserted) |
c906108c | 3743 | { |
c02f5703 MS |
3744 | /* Yes -- remove it. Previously we did not bother to |
3745 | remove the breakpoint if the section had been | |
3746 | unmapped, but let's not rely on that being safe. We | |
3747 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3748 | |
3749 | /* However, we should remove *software* breakpoints only | |
3750 | if the section is still mapped, or else we overwrite | |
3751 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3752 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3753 | || section_is_mapped (bl->section)) | |
73971819 | 3754 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3755 | else |
3756 | val = 0; | |
c906108c | 3757 | } |
c02f5703 MS |
3758 | else |
3759 | { | |
3760 | /* No -- not inserted, so no need to remove. No error. */ | |
3761 | val = 0; | |
3762 | } | |
c906108c | 3763 | } |
879d1e6b | 3764 | |
08351840 PA |
3765 | /* In some cases, we might not be able to remove a breakpoint in |
3766 | a shared library that has already been removed, but we have | |
3767 | not yet processed the shlib unload event. Similarly for an | |
3768 | unloaded add-symbol-file object - the user might not yet have | |
3769 | had the chance to remove-symbol-file it. shlib_disabled will | |
3770 | be set if the library/object has already been removed, but | |
3771 | the breakpoint hasn't been uninserted yet, e.g., after | |
3772 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3773 | always-inserted mode. */ | |
076855f9 | 3774 | if (val |
08351840 PA |
3775 | && (bl->loc_type == bp_loc_software_breakpoint |
3776 | && (bl->shlib_disabled | |
3777 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3778 | || shared_objfile_contains_address_p (bl->pspace, |
3779 | bl->address)))) | |
879d1e6b UW |
3780 | val = 0; |
3781 | ||
c906108c SS |
3782 | if (val) |
3783 | return val; | |
b2b6a7da | 3784 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3785 | } |
35df4500 | 3786 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3787 | { |
77b06cd7 TJB |
3788 | gdb_assert (bl->owner->ops != NULL |
3789 | && bl->owner->ops->remove_location != NULL); | |
3790 | ||
b2b6a7da | 3791 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3792 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3793 | |
c906108c | 3794 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3795 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3796 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3797 | bl->owner->number); |
c906108c | 3798 | } |
35df4500 TJB |
3799 | else if (bl->owner->type == bp_catchpoint |
3800 | && breakpoint_enabled (bl->owner) | |
3801 | && !bl->duplicate) | |
ce78b96d | 3802 | { |
77b06cd7 TJB |
3803 | gdb_assert (bl->owner->ops != NULL |
3804 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3805 | |
73971819 | 3806 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3807 | if (val) |
3808 | return val; | |
77b06cd7 | 3809 | |
b2b6a7da | 3810 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3811 | } |
c906108c SS |
3812 | |
3813 | return 0; | |
3814 | } | |
3815 | ||
6c95b8df | 3816 | static int |
834c0d03 | 3817 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3818 | { |
35df4500 TJB |
3819 | /* BL is never in moribund_locations by our callers. */ |
3820 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3821 | |
6c95b8df PA |
3822 | /* The type of none suggests that owner is actually deleted. |
3823 | This should not ever happen. */ | |
35df4500 | 3824 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3825 | |
5ed8105e | 3826 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3827 | |
35df4500 | 3828 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3829 | |
5ed8105e | 3830 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3831 | } |
3832 | ||
c906108c SS |
3833 | /* Clear the "inserted" flag in all breakpoints. */ |
3834 | ||
25b22b0a | 3835 | void |
fba45db2 | 3836 | mark_breakpoints_out (void) |
c906108c | 3837 | { |
35df4500 | 3838 | struct bp_location *bl, **blp_tmp; |
c906108c | 3839 | |
35df4500 | 3840 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3841 | if (bl->pspace == current_program_space) |
35df4500 | 3842 | bl->inserted = 0; |
c906108c SS |
3843 | } |
3844 | ||
53a5351d JM |
3845 | /* Clear the "inserted" flag in all breakpoints and delete any |
3846 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3847 | |
3848 | Plus other such housekeeping that has to be done for breakpoints | |
3849 | between runs. | |
3850 | ||
53a5351d JM |
3851 | Note: this function gets called at the end of a run (by |
3852 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3853 | init_wait_for_inferior). */ |
c906108c SS |
3854 | |
3855 | ||
3856 | ||
3857 | void | |
fba45db2 | 3858 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3859 | { |
35df4500 | 3860 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3861 | struct program_space *pspace = current_program_space; |
c906108c | 3862 | |
50c71eaf PA |
3863 | /* If breakpoint locations are shared across processes, then there's |
3864 | nothing to do. */ | |
f5656ead | 3865 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3866 | return; |
3867 | ||
1a853c52 | 3868 | mark_breakpoints_out (); |
075f6582 | 3869 | |
35df4500 | 3870 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3871 | { |
6c95b8df PA |
3872 | if (b->loc && b->loc->pspace != pspace) |
3873 | continue; | |
3874 | ||
c5aa993b JM |
3875 | switch (b->type) |
3876 | { | |
3877 | case bp_call_dummy: | |
e2e4d78b | 3878 | case bp_longjmp_call_dummy: |
c906108c | 3879 | |
c5aa993b | 3880 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3881 | cause problems when the inferior is rerun, so we better get |
3882 | rid of it. */ | |
3883 | ||
3884 | case bp_watchpoint_scope: | |
3885 | ||
3886 | /* Also get rid of scope breakpoints. */ | |
3887 | ||
3888 | case bp_shlib_event: | |
3889 | ||
3890 | /* Also remove solib event breakpoints. Their addresses may | |
3891 | have changed since the last time we ran the program. | |
3892 | Actually we may now be debugging against different target; | |
3893 | and so the solib backend that installed this breakpoint may | |
3894 | not be used in by the target. E.g., | |
3895 | ||
3896 | (gdb) file prog-linux | |
3897 | (gdb) run # native linux target | |
3898 | ... | |
3899 | (gdb) kill | |
3900 | (gdb) file prog-win.exe | |
3901 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3902 | */ | |
c906108c | 3903 | |
f59f708a PA |
3904 | case bp_step_resume: |
3905 | ||
3906 | /* Also remove step-resume breakpoints. */ | |
3907 | ||
7c16b83e PA |
3908 | case bp_single_step: |
3909 | ||
3910 | /* Also remove single-step breakpoints. */ | |
3911 | ||
c5aa993b JM |
3912 | delete_breakpoint (b); |
3913 | break; | |
c906108c | 3914 | |
c5aa993b JM |
3915 | case bp_watchpoint: |
3916 | case bp_hardware_watchpoint: | |
3917 | case bp_read_watchpoint: | |
3918 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3919 | { |
3920 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3921 | |
3a5c3e22 PA |
3922 | /* Likewise for watchpoints on local expressions. */ |
3923 | if (w->exp_valid_block != NULL) | |
3924 | delete_breakpoint (b); | |
63000888 | 3925 | else |
3a5c3e22 | 3926 | { |
63000888 PA |
3927 | /* Get rid of existing locations, which are no longer |
3928 | valid. New ones will be created in | |
3929 | update_watchpoint, when the inferior is restarted. | |
3930 | The next update_global_location_list call will | |
3931 | garbage collect them. */ | |
3932 | b->loc = NULL; | |
3933 | ||
3934 | if (context == inf_starting) | |
3935 | { | |
3936 | /* Reset val field to force reread of starting value in | |
3937 | insert_breakpoints. */ | |
850645cf | 3938 | w->val.reset (nullptr); |
63000888 PA |
3939 | w->val_valid = 0; |
3940 | } | |
3941 | } | |
3a5c3e22 | 3942 | } |
c5aa993b JM |
3943 | break; |
3944 | default: | |
c5aa993b JM |
3945 | break; |
3946 | } | |
3947 | } | |
1c5cfe86 PA |
3948 | |
3949 | /* Get rid of the moribund locations. */ | |
1123588c | 3950 | for (bp_location *bl : moribund_locations) |
35df4500 | 3951 | decref_bp_location (&bl); |
1123588c | 3952 | moribund_locations.clear (); |
c906108c SS |
3953 | } |
3954 | ||
6c95b8df PA |
3955 | /* These functions concern about actual breakpoints inserted in the |
3956 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3957 | we need to hop over the bkpt --- so we check for address space | |
3958 | match, not program space. */ | |
3959 | ||
c2c6d25f JM |
3960 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3961 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3962 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3963 | permanent breakpoint. | |
3964 | - When continuing from a location with an ordinary breakpoint, we | |
3965 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3966 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3967 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3968 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3969 | |
c2c6d25f | 3970 | enum breakpoint_here |
accd0bcd | 3971 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3972 | { |
35df4500 | 3973 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3974 | int any_breakpoint_here = 0; |
c906108c | 3975 | |
35df4500 | 3976 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3977 | { |
35df4500 TJB |
3978 | if (bl->loc_type != bp_loc_software_breakpoint |
3979 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3980 | continue; |
3981 | ||
f1310107 | 3982 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3983 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3984 | || bl->permanent) |
f1310107 | 3985 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3986 | { |
3987 | if (overlay_debugging | |
35df4500 TJB |
3988 | && section_is_overlay (bl->section) |
3989 | && !section_is_mapped (bl->section)) | |
075f6582 | 3990 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3991 | else if (bl->permanent) |
075f6582 DJ |
3992 | return permanent_breakpoint_here; |
3993 | else | |
3994 | any_breakpoint_here = 1; | |
3995 | } | |
3996 | } | |
c906108c | 3997 | |
f486487f | 3998 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3999 | } |
4000 | ||
d35ae833 PA |
4001 | /* See breakpoint.h. */ |
4002 | ||
4003 | int | |
accd0bcd | 4004 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4005 | CORE_ADDR addr, ULONGEST len) |
4006 | { | |
4007 | struct bp_location *bl, **blp_tmp; | |
4008 | ||
4009 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4010 | { | |
4011 | if (bl->loc_type != bp_loc_software_breakpoint | |
4012 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4013 | continue; | |
4014 | ||
4015 | if ((breakpoint_enabled (bl->owner) | |
4016 | || bl->permanent) | |
4017 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4018 | addr, len)) | |
4019 | { | |
4020 | if (overlay_debugging | |
4021 | && section_is_overlay (bl->section) | |
4022 | && !section_is_mapped (bl->section)) | |
4023 | { | |
4024 | /* Unmapped overlay -- can't be a match. */ | |
4025 | continue; | |
4026 | } | |
4027 | ||
4028 | return 1; | |
4029 | } | |
4030 | } | |
4031 | ||
4032 | return 0; | |
4033 | } | |
4034 | ||
1c5cfe86 PA |
4035 | /* Return true if there's a moribund breakpoint at PC. */ |
4036 | ||
4037 | int | |
accd0bcd | 4038 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4039 | { |
1123588c | 4040 | for (bp_location *loc : moribund_locations) |
f1310107 | 4041 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4042 | return 1; |
4043 | ||
4044 | return 0; | |
4045 | } | |
c2c6d25f | 4046 | |
f7ce857f PA |
4047 | /* Returns non-zero iff BL is inserted at PC, in address space |
4048 | ASPACE. */ | |
4049 | ||
4050 | static int | |
4051 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4052 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4053 | { |
4054 | if (bl->inserted | |
4055 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4056 | aspace, pc)) | |
4057 | { | |
4058 | if (overlay_debugging | |
4059 | && section_is_overlay (bl->section) | |
4060 | && !section_is_mapped (bl->section)) | |
4061 | return 0; /* unmapped overlay -- can't be a match */ | |
4062 | else | |
4063 | return 1; | |
4064 | } | |
4065 | return 0; | |
4066 | } | |
4067 | ||
a1fd2fa5 | 4068 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4069 | |
4070 | int | |
accd0bcd | 4071 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4072 | { |
f7ce857f | 4073 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4074 | |
f7ce857f | 4075 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4076 | { |
f7ce857f PA |
4077 | struct bp_location *bl = *blp; |
4078 | ||
35df4500 TJB |
4079 | if (bl->loc_type != bp_loc_software_breakpoint |
4080 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4081 | continue; |
4082 | ||
f7ce857f PA |
4083 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4084 | return 1; | |
c5aa993b | 4085 | } |
c36b740a VP |
4086 | return 0; |
4087 | } | |
4088 | ||
a1fd2fa5 PA |
4089 | /* This function returns non-zero iff there is a software breakpoint |
4090 | inserted at PC. */ | |
c36b740a VP |
4091 | |
4092 | int | |
accd0bcd | 4093 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4094 | CORE_ADDR pc) |
4fa8626c | 4095 | { |
f7ce857f | 4096 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4097 | |
f7ce857f | 4098 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4099 | { |
f7ce857f PA |
4100 | struct bp_location *bl = *blp; |
4101 | ||
35df4500 | 4102 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4103 | continue; |
4104 | ||
f7ce857f PA |
4105 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4106 | return 1; | |
4fa8626c DJ |
4107 | } |
4108 | ||
4109 | return 0; | |
9c02b525 PA |
4110 | } |
4111 | ||
4112 | /* See breakpoint.h. */ | |
4113 | ||
4114 | int | |
accd0bcd | 4115 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4116 | CORE_ADDR pc) |
4117 | { | |
4118 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4119 | |
4120 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4121 | { | |
4122 | struct bp_location *bl = *blp; | |
4123 | ||
4124 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4125 | continue; | |
4126 | ||
4127 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4128 | return 1; | |
4129 | } | |
4130 | ||
4131 | return 0; | |
4fa8626c DJ |
4132 | } |
4133 | ||
9093389c | 4134 | int |
accd0bcd | 4135 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4136 | CORE_ADDR addr, ULONGEST len) |
4137 | { | |
4138 | struct breakpoint *bpt; | |
4139 | ||
4140 | ALL_BREAKPOINTS (bpt) | |
4141 | { | |
4142 | struct bp_location *loc; | |
4143 | ||
4144 | if (bpt->type != bp_hardware_watchpoint | |
4145 | && bpt->type != bp_access_watchpoint) | |
4146 | continue; | |
4147 | ||
4148 | if (!breakpoint_enabled (bpt)) | |
4149 | continue; | |
4150 | ||
4151 | for (loc = bpt->loc; loc; loc = loc->next) | |
4152 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4153 | { | |
4154 | CORE_ADDR l, h; | |
4155 | ||
4156 | /* Check for intersection. */ | |
768adc05 PA |
4157 | l = std::max<CORE_ADDR> (loc->address, addr); |
4158 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4159 | if (l < h) |
4160 | return 1; | |
4161 | } | |
4162 | } | |
4163 | return 0; | |
4164 | } | |
c906108c | 4165 | \f |
c5aa993b | 4166 | |
c906108c SS |
4167 | /* bpstat stuff. External routines' interfaces are documented |
4168 | in breakpoint.h. */ | |
4169 | ||
4170 | int | |
c326b90e | 4171 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4172 | { |
533be4dd | 4173 | return (ep->type == bp_catchpoint); |
c906108c SS |
4174 | } |
4175 | ||
f431efe5 PA |
4176 | /* Frees any storage that is part of a bpstat. Does not walk the |
4177 | 'next' chain. */ | |
4178 | ||
04afa70c | 4179 | bpstats::~bpstats () |
198757a8 | 4180 | { |
04afa70c TT |
4181 | if (bp_location_at != NULL) |
4182 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4183 | } |
4184 | ||
c906108c SS |
4185 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4186 | Also free any storage that is part of a bpstat. */ | |
4187 | ||
4188 | void | |
fba45db2 | 4189 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4190 | { |
4191 | bpstat p; | |
4192 | bpstat q; | |
4193 | ||
4194 | if (bsp == 0) | |
4195 | return; | |
4196 | p = *bsp; | |
4197 | while (p != NULL) | |
4198 | { | |
4199 | q = p->next; | |
04afa70c | 4200 | delete p; |
c906108c SS |
4201 | p = q; |
4202 | } | |
4203 | *bsp = NULL; | |
4204 | } | |
4205 | ||
04afa70c TT |
4206 | bpstats::bpstats (const bpstats &other) |
4207 | : next (NULL), | |
4208 | bp_location_at (other.bp_location_at), | |
4209 | breakpoint_at (other.breakpoint_at), | |
4210 | commands (other.commands), | |
04afa70c TT |
4211 | print (other.print), |
4212 | stop (other.stop), | |
4213 | print_it (other.print_it) | |
4214 | { | |
850645cf TT |
4215 | if (other.old_val != NULL) |
4216 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4217 | incref_bp_location (bp_location_at); |
04afa70c TT |
4218 | } |
4219 | ||
c906108c SS |
4220 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4221 | is part of the bpstat is copied as well. */ | |
4222 | ||
4223 | bpstat | |
fba45db2 | 4224 | bpstat_copy (bpstat bs) |
c906108c SS |
4225 | { |
4226 | bpstat p = NULL; | |
4227 | bpstat tmp; | |
4228 | bpstat retval = NULL; | |
4229 | ||
4230 | if (bs == NULL) | |
4231 | return bs; | |
4232 | ||
4233 | for (; bs != NULL; bs = bs->next) | |
4234 | { | |
04afa70c | 4235 | tmp = new bpstats (*bs); |
31cc81e9 | 4236 | |
c906108c SS |
4237 | if (p == NULL) |
4238 | /* This is the first thing in the chain. */ | |
4239 | retval = tmp; | |
4240 | else | |
4241 | p->next = tmp; | |
4242 | p = tmp; | |
4243 | } | |
4244 | p->next = NULL; | |
4245 | return retval; | |
4246 | } | |
4247 | ||
4a64f543 | 4248 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4249 | |
4250 | bpstat | |
fba45db2 | 4251 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4252 | { |
c5aa993b JM |
4253 | if (bsp == NULL) |
4254 | return NULL; | |
c906108c | 4255 | |
c5aa993b JM |
4256 | for (; bsp != NULL; bsp = bsp->next) |
4257 | { | |
f431efe5 | 4258 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4259 | return bsp; |
4260 | } | |
c906108c SS |
4261 | return NULL; |
4262 | } | |
4263 | ||
ab04a2af TT |
4264 | /* See breakpoint.h. */ |
4265 | ||
47591c29 | 4266 | int |
427cd150 | 4267 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4268 | { |
ab04a2af TT |
4269 | for (; bsp != NULL; bsp = bsp->next) |
4270 | { | |
427cd150 TT |
4271 | if (bsp->breakpoint_at == NULL) |
4272 | { | |
4273 | /* A moribund location can never explain a signal other than | |
4274 | GDB_SIGNAL_TRAP. */ | |
4275 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4276 | return 1; |
427cd150 TT |
4277 | } |
4278 | else | |
47591c29 PA |
4279 | { |
4280 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4281 | sig)) | |
4282 | return 1; | |
4283 | } | |
ab04a2af TT |
4284 | } |
4285 | ||
47591c29 | 4286 | return 0; |
ab04a2af TT |
4287 | } |
4288 | ||
4a64f543 MS |
4289 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4290 | stopped at. *BSP upon return is a bpstat which points to the | |
4291 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4292 | good for anything but further calls to bpstat_num). | |
4293 | ||
8671a17b PA |
4294 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4295 | Return -1 if stopped at a breakpoint that has been deleted since | |
4296 | we set it. | |
4297 | Return 1 otherwise. */ | |
c906108c SS |
4298 | |
4299 | int | |
8671a17b | 4300 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4301 | { |
4302 | struct breakpoint *b; | |
4303 | ||
4304 | if ((*bsp) == NULL) | |
4305 | return 0; /* No more breakpoint values */ | |
8671a17b | 4306 | |
4a64f543 MS |
4307 | /* We assume we'll never have several bpstats that correspond to a |
4308 | single breakpoint -- otherwise, this function might return the | |
4309 | same number more than once and this will look ugly. */ | |
f431efe5 | 4310 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4311 | *bsp = (*bsp)->next; |
4312 | if (b == NULL) | |
4313 | return -1; /* breakpoint that's been deleted since */ | |
4314 | ||
4315 | *num = b->number; /* We have its number */ | |
4316 | return 1; | |
c906108c SS |
4317 | } |
4318 | ||
e93ca019 | 4319 | /* See breakpoint.h. */ |
c906108c SS |
4320 | |
4321 | void | |
e93ca019 | 4322 | bpstat_clear_actions (void) |
c906108c | 4323 | { |
e93ca019 JK |
4324 | bpstat bs; |
4325 | ||
00431a78 | 4326 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4327 | return; |
4328 | ||
00431a78 | 4329 | thread_info *tp = inferior_thread (); |
e93ca019 | 4330 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4331 | { |
d1b0a7bf | 4332 | bs->commands = NULL; |
850645cf | 4333 | bs->old_val.reset (nullptr); |
c906108c SS |
4334 | } |
4335 | } | |
4336 | ||
f3b1572e PA |
4337 | /* Called when a command is about to proceed the inferior. */ |
4338 | ||
4339 | static void | |
4340 | breakpoint_about_to_proceed (void) | |
4341 | { | |
d7e15655 | 4342 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4343 | { |
4344 | struct thread_info *tp = inferior_thread (); | |
4345 | ||
4346 | /* Allow inferior function calls in breakpoint commands to not | |
4347 | interrupt the command list. When the call finishes | |
4348 | successfully, the inferior will be standing at the same | |
4349 | breakpoint as if nothing happened. */ | |
16c381f0 | 4350 | if (tp->control.in_infcall) |
f3b1572e PA |
4351 | return; |
4352 | } | |
4353 | ||
4354 | breakpoint_proceeded = 1; | |
4355 | } | |
4356 | ||
abf85f46 JK |
4357 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4358 | or its equivalent. */ | |
4359 | ||
4360 | static int | |
4361 | command_line_is_silent (struct command_line *cmd) | |
4362 | { | |
4f45d445 | 4363 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4364 | } |
4365 | ||
4a64f543 MS |
4366 | /* Execute all the commands associated with all the breakpoints at |
4367 | this location. Any of these commands could cause the process to | |
4368 | proceed beyond this point, etc. We look out for such changes by | |
4369 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4370 | |
347bddb7 PA |
4371 | Returns true if a breakpoint command resumed the inferior. In that |
4372 | case, it is the caller's responsibility to recall it again with the | |
4373 | bpstat of the current thread. */ | |
4374 | ||
4375 | static int | |
4376 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4377 | { |
4378 | bpstat bs; | |
347bddb7 | 4379 | int again = 0; |
c906108c SS |
4380 | |
4381 | /* Avoid endless recursion if a `source' command is contained | |
4382 | in bs->commands. */ | |
4383 | if (executing_breakpoint_commands) | |
347bddb7 | 4384 | return 0; |
c906108c | 4385 | |
81b1e71c TT |
4386 | scoped_restore save_executing |
4387 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4388 | |
1ac32117 | 4389 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4390 | |
4a64f543 | 4391 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4392 | bs = *bsp; |
4393 | ||
4394 | breakpoint_proceeded = 0; | |
4395 | for (; bs != NULL; bs = bs->next) | |
4396 | { | |
d1b0a7bf | 4397 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4398 | |
4399 | /* Take ownership of the BSP's command tree, if it has one. | |
4400 | ||
4401 | The command tree could legitimately contain commands like | |
4402 | 'step' and 'next', which call clear_proceed_status, which | |
4403 | frees stop_bpstat's command tree. To make sure this doesn't | |
4404 | free the tree we're executing out from under us, we need to | |
4405 | take ownership of the tree ourselves. Since a given bpstat's | |
4406 | commands are only executed once, we don't need to copy it; we | |
4407 | can clear the pointer in the bpstat, and make sure we free | |
4408 | the tree when we're done. */ | |
d1b0a7bf | 4409 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4410 | bs->commands = NULL; |
d1b0a7bf TT |
4411 | if (ccmd != NULL) |
4412 | cmd = ccmd.get (); | |
abf85f46 JK |
4413 | if (command_line_is_silent (cmd)) |
4414 | { | |
4415 | /* The action has been already done by bpstat_stop_status. */ | |
4416 | cmd = cmd->next; | |
4417 | } | |
6c50ab1c | 4418 | |
c906108c SS |
4419 | while (cmd != NULL) |
4420 | { | |
4421 | execute_control_command (cmd); | |
4422 | ||
4423 | if (breakpoint_proceeded) | |
4424 | break; | |
4425 | else | |
4426 | cmd = cmd->next; | |
4427 | } | |
6c50ab1c | 4428 | |
c906108c | 4429 | if (breakpoint_proceeded) |
32c1e744 | 4430 | { |
cb814510 | 4431 | if (current_ui->async) |
347bddb7 PA |
4432 | /* If we are in async mode, then the target might be still |
4433 | running, not stopped at any breakpoint, so nothing for | |
4434 | us to do here -- just return to the event loop. */ | |
4435 | ; | |
32c1e744 VP |
4436 | else |
4437 | /* In sync mode, when execute_control_command returns | |
4438 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4439 | Breakpoint commands for that stop were not run, since |
4440 | execute_command does not run breakpoint commands -- | |
4441 | only command_line_handler does, but that one is not | |
4442 | involved in execution of breakpoint commands. So, we | |
4443 | can now execute breakpoint commands. It should be | |
4444 | noted that making execute_command do bpstat actions is | |
4445 | not an option -- in this case we'll have recursive | |
4446 | invocation of bpstat for each breakpoint with a | |
4447 | command, and can easily blow up GDB stack. Instead, we | |
4448 | return true, which will trigger the caller to recall us | |
4449 | with the new stop_bpstat. */ | |
4450 | again = 1; | |
4451 | break; | |
32c1e744 | 4452 | } |
c906108c | 4453 | } |
347bddb7 PA |
4454 | return again; |
4455 | } | |
4456 | ||
00431a78 PA |
4457 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4458 | one, is alive and has execution. Return NULL otherwise. */ | |
4459 | ||
4460 | static thread_info * | |
4461 | get_bpstat_thread () | |
4462 | { | |
4463 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4464 | return NULL; | |
4465 | ||
4466 | thread_info *tp = inferior_thread (); | |
4467 | if (tp->state == THREAD_EXITED || tp->executing) | |
4468 | return NULL; | |
4469 | return tp; | |
4470 | } | |
4471 | ||
347bddb7 PA |
4472 | void |
4473 | bpstat_do_actions (void) | |
4474 | { | |
353d1d73 | 4475 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
00431a78 | 4476 | thread_info *tp; |
353d1d73 | 4477 | |
347bddb7 | 4478 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4479 | while ((tp = get_bpstat_thread ()) != NULL) |
4480 | { | |
4481 | /* Since in sync mode, bpstat_do_actions may resume the | |
4482 | inferior, and only return when it is stopped at the next | |
4483 | breakpoint, we keep doing breakpoint actions until it returns | |
4484 | false to indicate the inferior was not resumed. */ | |
4485 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4486 | break; | |
4487 | } | |
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 (); |
bcb430e4 | 4587 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4588 | |
4589 | if (!is_catchpoint) | |
4590 | { | |
4591 | if (any_added || any_deleted) | |
112e8700 | 4592 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4593 | else |
112e8700 SM |
4594 | current_uiout->text (_("Stopped due to shared library event (no " |
4595 | "libraries added or removed)\n")); | |
edcc5120 TT |
4596 | } |
4597 | ||
112e8700 SM |
4598 | if (current_uiout->is_mi_like_p ()) |
4599 | current_uiout->field_string ("reason", | |
4600 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4601 | |
4602 | if (any_deleted) | |
4603 | { | |
112e8700 | 4604 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4605 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4606 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4607 | { |
6fb16ce6 SM |
4608 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4609 | ||
edcc5120 | 4610 | if (ix > 0) |
112e8700 SM |
4611 | current_uiout->text (" "); |
4612 | current_uiout->field_string ("library", name); | |
4613 | current_uiout->text ("\n"); | |
edcc5120 | 4614 | } |
edcc5120 TT |
4615 | } |
4616 | ||
4617 | if (any_added) | |
4618 | { | |
112e8700 | 4619 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4620 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4621 | bool first = true; |
52941706 | 4622 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4623 | { |
bcb430e4 | 4624 | if (!first) |
112e8700 | 4625 | current_uiout->text (" "); |
bcb430e4 | 4626 | first = false; |
112e8700 SM |
4627 | current_uiout->field_string ("library", iter->so_name); |
4628 | current_uiout->text ("\n"); | |
edcc5120 | 4629 | } |
edcc5120 TT |
4630 | } |
4631 | } | |
4632 | ||
e514a9d6 JM |
4633 | /* Print a message indicating what happened. This is called from |
4634 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4635 | list - a list of the eventpoints that caused this stop. KIND is |
4636 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4637 | routine calls the generic print routine for printing a message |
4638 | about reasons for stopping. This will print (for example) the | |
4639 | "Breakpoint n," part of the output. The return value of this | |
4640 | routine is one of: | |
c906108c | 4641 | |
4a64f543 | 4642 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4643 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4644 | code to print the location. An example is |
c5aa993b JM |
4645 | "Breakpoint 1, " which should be followed by |
4646 | the location. | |
917317f4 | 4647 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4648 | to also print the location part of the message. |
4649 | An example is the catch/throw messages, which | |
4a64f543 | 4650 | don't require a location appended to the end. |
917317f4 | 4651 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4652 | further info to be printed. */ |
c906108c | 4653 | |
917317f4 | 4654 | enum print_stop_action |
36dfb11c | 4655 | bpstat_print (bpstat bs, int kind) |
c906108c | 4656 | { |
f486487f | 4657 | enum print_stop_action val; |
c5aa993b | 4658 | |
c906108c | 4659 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4660 | (Currently all watchpoints go on the bpstat whether hit or not. |
4661 | That probably could (should) be changed, provided care is taken | |
c906108c | 4662 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4663 | for (; bs; bs = bs->next) |
4664 | { | |
4665 | val = print_bp_stop_message (bs); | |
4666 | if (val == PRINT_SRC_ONLY | |
4667 | || val == PRINT_SRC_AND_LOC | |
4668 | || val == PRINT_NOTHING) | |
4669 | return val; | |
4670 | } | |
c906108c | 4671 | |
36dfb11c TT |
4672 | /* If we had hit a shared library event breakpoint, |
4673 | print_bp_stop_message would print out this message. If we hit an | |
4674 | OS-level shared library event, do the same thing. */ | |
4675 | if (kind == TARGET_WAITKIND_LOADED) | |
4676 | { | |
edcc5120 | 4677 | print_solib_event (0); |
36dfb11c TT |
4678 | return PRINT_NOTHING; |
4679 | } | |
4680 | ||
e514a9d6 | 4681 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4682 | with and nothing was printed. */ |
917317f4 | 4683 | return PRINT_UNKNOWN; |
c906108c SS |
4684 | } |
4685 | ||
bf469271 | 4686 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4687 | |
bf469271 PA |
4688 | static bool |
4689 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4690 | { |
278cd55f | 4691 | struct value *mark = value_mark (); |
bf469271 | 4692 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4693 | |
c906108c | 4694 | value_free_to_mark (mark); |
bf469271 | 4695 | return res; |
c906108c SS |
4696 | } |
4697 | ||
5760d0ab | 4698 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4699 | |
04afa70c TT |
4700 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4701 | : next (NULL), | |
4702 | bp_location_at (bl), | |
4703 | breakpoint_at (bl->owner), | |
4704 | commands (NULL), | |
04afa70c TT |
4705 | print (0), |
4706 | stop (0), | |
4707 | print_it (print_it_normal) | |
c906108c | 4708 | { |
f431efe5 | 4709 | incref_bp_location (bl); |
04afa70c TT |
4710 | **bs_link_pointer = this; |
4711 | *bs_link_pointer = &next; | |
4712 | } | |
4713 | ||
4714 | bpstats::bpstats () | |
4715 | : next (NULL), | |
4716 | bp_location_at (NULL), | |
4717 | breakpoint_at (NULL), | |
4718 | commands (NULL), | |
04afa70c TT |
4719 | print (0), |
4720 | stop (0), | |
4721 | print_it (print_it_normal) | |
4722 | { | |
c906108c SS |
4723 | } |
4724 | \f | |
d983da9c DJ |
4725 | /* The target has stopped with waitstatus WS. Check if any hardware |
4726 | watchpoints have triggered, according to the target. */ | |
4727 | ||
4728 | int | |
4729 | watchpoints_triggered (struct target_waitstatus *ws) | |
4730 | { | |
57810aa7 | 4731 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4732 | CORE_ADDR addr; |
4733 | struct breakpoint *b; | |
4734 | ||
4735 | if (!stopped_by_watchpoint) | |
4736 | { | |
4737 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4738 | as not triggered. */ | |
4739 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4740 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4741 | { |
4742 | struct watchpoint *w = (struct watchpoint *) b; | |
4743 | ||
4744 | w->watchpoint_triggered = watch_triggered_no; | |
4745 | } | |
d983da9c DJ |
4746 | |
4747 | return 0; | |
4748 | } | |
4749 | ||
8b88a78e | 4750 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4751 | { |
4752 | /* We were stopped by a watchpoint, but we don't know where. | |
4753 | Mark all watchpoints as unknown. */ | |
4754 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4755 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4756 | { |
4757 | struct watchpoint *w = (struct watchpoint *) b; | |
4758 | ||
4759 | w->watchpoint_triggered = watch_triggered_unknown; | |
4760 | } | |
d983da9c | 4761 | |
3c4797ba | 4762 | return 1; |
d983da9c DJ |
4763 | } |
4764 | ||
4765 | /* The target could report the data address. Mark watchpoints | |
4766 | affected by this data address as triggered, and all others as not | |
4767 | triggered. */ | |
4768 | ||
4769 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4770 | if (is_hardware_watchpoint (b)) |
d983da9c | 4771 | { |
3a5c3e22 | 4772 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4773 | struct bp_location *loc; |
d983da9c | 4774 | |
3a5c3e22 | 4775 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4776 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4777 | { |
3a5c3e22 | 4778 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4779 | { |
3a5c3e22 PA |
4780 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4781 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4782 | |
4783 | if (newaddr == start) | |
4784 | { | |
3a5c3e22 | 4785 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4786 | break; |
4787 | } | |
4788 | } | |
4789 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4790 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4791 | addr, loc->address, |
4792 | loc->length)) | |
4793 | { | |
3a5c3e22 | 4794 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4795 | break; |
4796 | } | |
4797 | } | |
d983da9c DJ |
4798 | } |
4799 | ||
4800 | return 1; | |
4801 | } | |
4802 | ||
bf469271 PA |
4803 | /* Possible return values for watchpoint_check. */ |
4804 | enum wp_check_result | |
4805 | { | |
4806 | /* The watchpoint has been deleted. */ | |
4807 | WP_DELETED = 1, | |
4808 | ||
4809 | /* The value has changed. */ | |
4810 | WP_VALUE_CHANGED = 2, | |
4811 | ||
4812 | /* The value has not changed. */ | |
4813 | WP_VALUE_NOT_CHANGED = 3, | |
4814 | ||
4815 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4816 | WP_IGNORE = 4, | |
4817 | }; | |
c906108c SS |
4818 | |
4819 | #define BP_TEMPFLAG 1 | |
4820 | #define BP_HARDWAREFLAG 2 | |
4821 | ||
4a64f543 | 4822 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4823 | changed. */ |
553e4c11 | 4824 | |
bf469271 PA |
4825 | static wp_check_result |
4826 | watchpoint_check (bpstat bs) | |
c906108c | 4827 | { |
3a5c3e22 | 4828 | struct watchpoint *b; |
c906108c SS |
4829 | struct frame_info *fr; |
4830 | int within_current_scope; | |
4831 | ||
f431efe5 | 4832 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4833 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4834 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4835 | |
f6bc2008 PA |
4836 | /* If this is a local watchpoint, we only want to check if the |
4837 | watchpoint frame is in scope if the current thread is the thread | |
4838 | that was used to create the watchpoint. */ | |
4839 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4840 | return WP_IGNORE; |
f6bc2008 | 4841 | |
c906108c SS |
4842 | if (b->exp_valid_block == NULL) |
4843 | within_current_scope = 1; | |
4844 | else | |
4845 | { | |
edb3359d DJ |
4846 | struct frame_info *frame = get_current_frame (); |
4847 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4848 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4849 | ||
c9cf6e20 | 4850 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4851 | still in the function but the stack frame has already been |
4852 | invalidated. Since we can't rely on the values of local | |
4853 | variables after the stack has been destroyed, we are treating | |
4854 | the watchpoint in that state as `not changed' without further | |
4855 | checking. Don't mark watchpoints as changed if the current | |
4856 | frame is in an epilogue - even if they are in some other | |
4857 | frame, our view of the stack is likely to be wrong and | |
4858 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4859 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4860 | return WP_IGNORE; |
a0f49112 | 4861 | |
101dcfbe | 4862 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4863 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4864 | |
4865 | /* If we've gotten confused in the unwinder, we might have | |
4866 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4867 | if (within_current_scope) |
4868 | { | |
4869 | struct symbol *function; | |
4870 | ||
4871 | function = get_frame_function (fr); | |
4872 | if (function == NULL | |
4873 | || !contained_in (b->exp_valid_block, | |
4874 | SYMBOL_BLOCK_VALUE (function))) | |
4875 | within_current_scope = 0; | |
4876 | } | |
69fbadd5 | 4877 | |
edb3359d | 4878 | if (within_current_scope) |
c906108c SS |
4879 | /* If we end up stopping, the current frame will get selected |
4880 | in normal_stop. So this call to select_frame won't affect | |
4881 | the user. */ | |
0f7d239c | 4882 | select_frame (fr); |
c906108c | 4883 | } |
c5aa993b | 4884 | |
c906108c SS |
4885 | if (within_current_scope) |
4886 | { | |
4a64f543 MS |
4887 | /* We use value_{,free_to_}mark because it could be a *long* |
4888 | time before we return to the command level and call | |
4889 | free_all_values. We can't call free_all_values because we | |
4890 | might be in the middle of evaluating a function call. */ | |
c906108c | 4891 | |
0cf6dd15 | 4892 | int pc = 0; |
9c06b0b4 | 4893 | struct value *mark; |
fa4727a6 DJ |
4894 | struct value *new_val; |
4895 | ||
c1fc2657 | 4896 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4897 | /* Since we don't know the exact trigger address (from |
4898 | stopped_data_address), just tell the user we've triggered | |
4899 | a mask watchpoint. */ | |
4900 | return WP_VALUE_CHANGED; | |
4901 | ||
4902 | mark = value_mark (); | |
4d01a485 | 4903 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4904 | |
bb9d5f81 PP |
4905 | if (b->val_bitsize != 0) |
4906 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4907 | ||
4a64f543 MS |
4908 | /* We use value_equal_contents instead of value_equal because |
4909 | the latter coerces an array to a pointer, thus comparing just | |
4910 | the address of the array instead of its contents. This is | |
4911 | not what we want. */ | |
fa4727a6 | 4912 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4913 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4914 | new_val))) | |
c906108c | 4915 | { |
c906108c | 4916 | bs->old_val = b->val; |
850645cf | 4917 | b->val = release_value (new_val); |
fa4727a6 | 4918 | b->val_valid = 1; |
850645cf TT |
4919 | if (new_val != NULL) |
4920 | value_free_to_mark (mark); | |
c906108c SS |
4921 | return WP_VALUE_CHANGED; |
4922 | } | |
4923 | else | |
4924 | { | |
60e1c644 | 4925 | /* Nothing changed. */ |
c906108c | 4926 | value_free_to_mark (mark); |
c906108c SS |
4927 | return WP_VALUE_NOT_CHANGED; |
4928 | } | |
4929 | } | |
4930 | else | |
4931 | { | |
4932 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4933 | if we temporarily ignored the watchpoint, then when |
4934 | we reenter the block in which it is valid it contains | |
4935 | garbage (in the case of a function, it may have two | |
4936 | garbage values, one before and one after the prologue). | |
4937 | So we can't even detect the first assignment to it and | |
4938 | watch after that (since the garbage may or may not equal | |
4939 | the first value assigned). */ | |
348d480f PA |
4940 | /* We print all the stop information in |
4941 | breakpoint_ops->print_it, but in this case, by the time we | |
4942 | call breakpoint_ops->print_it this bp will be deleted | |
4943 | already. So we have no choice but print the information | |
4944 | here. */ | |
468afe6c | 4945 | |
0e454242 | 4946 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4947 | { |
4948 | struct ui_out *uiout = current_uiout; | |
4949 | ||
112e8700 SM |
4950 | if (uiout->is_mi_like_p ()) |
4951 | uiout->field_string | |
4952 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4953 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4954 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4955 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4956 | "which its expression is valid.\n"); |
4957 | } | |
4ce44c66 | 4958 | |
cdac0397 | 4959 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4960 | b->commands = NULL; |
d0fb5eae | 4961 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4962 | |
4963 | return WP_DELETED; | |
4964 | } | |
4965 | } | |
4966 | ||
18a18393 | 4967 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4968 | breakpoint location BL. This function does not check if we should |
4969 | stop, only if BL explains the stop. */ | |
4970 | ||
18a18393 | 4971 | static int |
6c95b8df | 4972 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4973 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4974 | const struct target_waitstatus *ws) |
18a18393 VP |
4975 | { |
4976 | struct breakpoint *b = bl->owner; | |
4977 | ||
348d480f | 4978 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4979 | gdb_assert (b != NULL); |
4980 | ||
bd522513 | 4981 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4982 | } |
4983 | ||
3a5c3e22 PA |
4984 | /* Determine if the watched values have actually changed, and we |
4985 | should stop. If not, set BS->stop to 0. */ | |
4986 | ||
18a18393 VP |
4987 | static void |
4988 | bpstat_check_watchpoint (bpstat bs) | |
4989 | { | |
2bdf28a0 | 4990 | const struct bp_location *bl; |
3a5c3e22 | 4991 | struct watchpoint *b; |
2bdf28a0 JK |
4992 | |
4993 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4994 | bl = bs->bp_location_at; |
2bdf28a0 | 4995 | gdb_assert (bl != NULL); |
3a5c3e22 | 4996 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4997 | gdb_assert (b != NULL); |
18a18393 | 4998 | |
18a18393 | 4999 | { |
18a18393 VP |
5000 | int must_check_value = 0; |
5001 | ||
c1fc2657 | 5002 | if (b->type == bp_watchpoint) |
18a18393 VP |
5003 | /* For a software watchpoint, we must always check the |
5004 | watched value. */ | |
5005 | must_check_value = 1; | |
5006 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5007 | /* We have a hardware watchpoint (read, write, or access) | |
5008 | and the target earlier reported an address watched by | |
5009 | this watchpoint. */ | |
5010 | must_check_value = 1; | |
5011 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5012 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5013 | /* We were stopped by a hardware watchpoint, but the target could |
5014 | not report the data address. We must check the watchpoint's | |
5015 | value. Access and read watchpoints are out of luck; without | |
5016 | a data address, we can't figure it out. */ | |
5017 | must_check_value = 1; | |
3a5c3e22 | 5018 | |
18a18393 VP |
5019 | if (must_check_value) |
5020 | { | |
bf469271 PA |
5021 | wp_check_result e; |
5022 | ||
5023 | TRY | |
5024 | { | |
5025 | e = watchpoint_check (bs); | |
5026 | } | |
5027 | CATCH (ex, RETURN_MASK_ALL) | |
5028 | { | |
5029 | exception_fprintf (gdb_stderr, ex, | |
5030 | "Error evaluating expression " | |
5031 | "for watchpoint %d\n", | |
5032 | b->number); | |
5033 | ||
5034 | SWITCH_THRU_ALL_UIS () | |
5035 | { | |
5036 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5037 | b->number); | |
5038 | } | |
5039 | watchpoint_del_at_next_stop (b); | |
5040 | e = WP_DELETED; | |
5041 | } | |
5042 | END_CATCH | |
5043 | ||
18a18393 VP |
5044 | switch (e) |
5045 | { | |
5046 | case WP_DELETED: | |
5047 | /* We've already printed what needs to be printed. */ | |
5048 | bs->print_it = print_it_done; | |
5049 | /* Stop. */ | |
5050 | break; | |
60e1c644 PA |
5051 | case WP_IGNORE: |
5052 | bs->print_it = print_it_noop; | |
5053 | bs->stop = 0; | |
5054 | break; | |
18a18393 | 5055 | case WP_VALUE_CHANGED: |
c1fc2657 | 5056 | if (b->type == bp_read_watchpoint) |
18a18393 | 5057 | { |
85d721b8 PA |
5058 | /* There are two cases to consider here: |
5059 | ||
4a64f543 | 5060 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5061 | In that case, trust the target, and always report |
5062 | the watchpoint hit to the user. Even though | |
5063 | reads don't cause value changes, the value may | |
5064 | have changed since the last time it was read, and | |
5065 | since we're not trapping writes, we will not see | |
5066 | those, and as such we should ignore our notion of | |
5067 | old value. | |
5068 | ||
4a64f543 | 5069 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5070 | reads and writes. There are two ways this may |
5071 | happen: | |
5072 | ||
4a64f543 | 5073 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5074 | reads only, but can break on accesses (reads or |
5075 | writes), such as e.g., x86. We detect this case | |
5076 | at the time we try to insert read watchpoints. | |
5077 | ||
4a64f543 | 5078 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5079 | watchpoints, but, the user set an access or write |
5080 | watchpoint watching the same memory as this read | |
5081 | watchpoint. | |
5082 | ||
5083 | If we're watching memory writes as well as reads, | |
5084 | ignore watchpoint hits when we find that the | |
5085 | value hasn't changed, as reads don't cause | |
5086 | changes. This still gives false positives when | |
5087 | the program writes the same value to memory as | |
5088 | what there was already in memory (we will confuse | |
5089 | it for a read), but it's much better than | |
5090 | nothing. */ | |
5091 | ||
5092 | int other_write_watchpoint = 0; | |
5093 | ||
5094 | if (bl->watchpoint_type == hw_read) | |
5095 | { | |
5096 | struct breakpoint *other_b; | |
5097 | ||
5098 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5099 | if (other_b->type == bp_hardware_watchpoint |
5100 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5101 | { |
3a5c3e22 PA |
5102 | struct watchpoint *other_w = |
5103 | (struct watchpoint *) other_b; | |
5104 | ||
5105 | if (other_w->watchpoint_triggered | |
5106 | == watch_triggered_yes) | |
5107 | { | |
5108 | other_write_watchpoint = 1; | |
5109 | break; | |
5110 | } | |
85d721b8 PA |
5111 | } |
5112 | } | |
5113 | ||
5114 | if (other_write_watchpoint | |
5115 | || bl->watchpoint_type == hw_access) | |
5116 | { | |
5117 | /* We're watching the same memory for writes, | |
5118 | and the value changed since the last time we | |
5119 | updated it, so this trap must be for a write. | |
5120 | Ignore it. */ | |
5121 | bs->print_it = print_it_noop; | |
5122 | bs->stop = 0; | |
5123 | } | |
18a18393 VP |
5124 | } |
5125 | break; | |
5126 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5127 | if (b->type == bp_hardware_watchpoint |
5128 | || b->type == bp_watchpoint) | |
18a18393 VP |
5129 | { |
5130 | /* Don't stop: write watchpoints shouldn't fire if | |
5131 | the value hasn't changed. */ | |
5132 | bs->print_it = print_it_noop; | |
5133 | bs->stop = 0; | |
5134 | } | |
5135 | /* Stop. */ | |
5136 | break; | |
5137 | default: | |
5138 | /* Can't happen. */ | |
18a18393 VP |
5139 | break; |
5140 | } | |
5141 | } | |
5142 | else /* must_check_value == 0 */ | |
5143 | { | |
5144 | /* This is a case where some watchpoint(s) triggered, but | |
5145 | not at the address of this watchpoint, or else no | |
5146 | watchpoint triggered after all. So don't print | |
5147 | anything for this watchpoint. */ | |
5148 | bs->print_it = print_it_noop; | |
5149 | bs->stop = 0; | |
5150 | } | |
5151 | } | |
5152 | } | |
5153 | ||
7d4df6a4 DE |
5154 | /* For breakpoints that are currently marked as telling gdb to stop, |
5155 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5156 | of breakpoint referred to by BS. If we should not stop for this |
5157 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5158 | |
18a18393 | 5159 | static void |
00431a78 | 5160 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5161 | { |
2bdf28a0 JK |
5162 | const struct bp_location *bl; |
5163 | struct breakpoint *b; | |
bf469271 PA |
5164 | /* Assume stop. */ |
5165 | bool condition_result = true; | |
7d4df6a4 DE |
5166 | struct expression *cond; |
5167 | ||
5168 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5169 | |
5170 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5171 | bl = bs->bp_location_at; |
2bdf28a0 | 5172 | gdb_assert (bl != NULL); |
f431efe5 | 5173 | b = bs->breakpoint_at; |
2bdf28a0 | 5174 | gdb_assert (b != NULL); |
18a18393 | 5175 | |
b775012e LM |
5176 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5177 | need to do so again since GDB does not know if we stopped due to a | |
5178 | breakpoint or a single step breakpoint. */ | |
5179 | ||
18a18393 | 5180 | if (frame_id_p (b->frame_id) |
edb3359d | 5181 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5182 | { |
7d4df6a4 DE |
5183 | bs->stop = 0; |
5184 | return; | |
5185 | } | |
60e1c644 | 5186 | |
12ab52e9 PA |
5187 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5188 | evaluating the condition if this isn't the specified | |
5189 | thread/task. */ | |
00431a78 PA |
5190 | if ((b->thread != -1 && b->thread != thread->global_num) |
5191 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5192 | { |
5193 | bs->stop = 0; | |
5194 | return; | |
5195 | } | |
5196 | ||
6dddc817 DE |
5197 | /* Evaluate extension language breakpoints that have a "stop" method |
5198 | implemented. */ | |
5199 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5200 | |
7d4df6a4 DE |
5201 | if (is_watchpoint (b)) |
5202 | { | |
5203 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5204 | |
4d01a485 | 5205 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5206 | } |
5207 | else | |
4d01a485 | 5208 | cond = bl->cond.get (); |
60e1c644 | 5209 | |
7d4df6a4 DE |
5210 | if (cond && b->disposition != disp_del_at_next_stop) |
5211 | { | |
5212 | int within_current_scope = 1; | |
5213 | struct watchpoint * w; | |
60e1c644 | 5214 | |
7d4df6a4 DE |
5215 | /* We use value_mark and value_free_to_mark because it could |
5216 | be a long time before we return to the command level and | |
5217 | call free_all_values. We can't call free_all_values | |
5218 | because we might be in the middle of evaluating a | |
5219 | function call. */ | |
5220 | struct value *mark = value_mark (); | |
5221 | ||
5222 | if (is_watchpoint (b)) | |
5223 | w = (struct watchpoint *) b; | |
5224 | else | |
5225 | w = NULL; | |
5226 | ||
5227 | /* Need to select the frame, with all that implies so that | |
5228 | the conditions will have the right context. Because we | |
5229 | use the frame, we will not see an inlined function's | |
5230 | variables when we arrive at a breakpoint at the start | |
5231 | of the inlined function; the current frame will be the | |
5232 | call site. */ | |
5233 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5234 | select_frame (get_current_frame ()); | |
5235 | else | |
18a18393 | 5236 | { |
7d4df6a4 DE |
5237 | struct frame_info *frame; |
5238 | ||
5239 | /* For local watchpoint expressions, which particular | |
5240 | instance of a local is being watched matters, so we | |
5241 | keep track of the frame to evaluate the expression | |
5242 | in. To evaluate the condition however, it doesn't | |
5243 | really matter which instantiation of the function | |
5244 | where the condition makes sense triggers the | |
5245 | watchpoint. This allows an expression like "watch | |
5246 | global if q > 10" set in `func', catch writes to | |
5247 | global on all threads that call `func', or catch | |
5248 | writes on all recursive calls of `func' by a single | |
5249 | thread. We simply always evaluate the condition in | |
5250 | the innermost frame that's executing where it makes | |
5251 | sense to evaluate the condition. It seems | |
5252 | intuitive. */ | |
5253 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5254 | if (frame != NULL) | |
5255 | select_frame (frame); | |
5256 | else | |
5257 | within_current_scope = 0; | |
18a18393 | 5258 | } |
7d4df6a4 | 5259 | if (within_current_scope) |
bf469271 PA |
5260 | { |
5261 | TRY | |
5262 | { | |
5263 | condition_result = breakpoint_cond_eval (cond); | |
5264 | } | |
5265 | CATCH (ex, RETURN_MASK_ALL) | |
5266 | { | |
5267 | exception_fprintf (gdb_stderr, ex, | |
5268 | "Error in testing breakpoint condition:\n"); | |
5269 | } | |
5270 | END_CATCH | |
5271 | } | |
7d4df6a4 | 5272 | else |
18a18393 | 5273 | { |
7d4df6a4 DE |
5274 | warning (_("Watchpoint condition cannot be tested " |
5275 | "in the current scope")); | |
5276 | /* If we failed to set the right context for this | |
5277 | watchpoint, unconditionally report it. */ | |
18a18393 | 5278 | } |
7d4df6a4 DE |
5279 | /* FIXME-someday, should give breakpoint #. */ |
5280 | value_free_to_mark (mark); | |
18a18393 | 5281 | } |
7d4df6a4 | 5282 | |
bf469271 | 5283 | if (cond && !condition_result) |
7d4df6a4 DE |
5284 | { |
5285 | bs->stop = 0; | |
5286 | } | |
7d4df6a4 DE |
5287 | else if (b->ignore_count > 0) |
5288 | { | |
5289 | b->ignore_count--; | |
5290 | bs->stop = 0; | |
5291 | /* Increase the hit count even though we don't stop. */ | |
5292 | ++(b->hit_count); | |
76727919 | 5293 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5294 | } |
18a18393 VP |
5295 | } |
5296 | ||
1cf4d951 PA |
5297 | /* Returns true if we need to track moribund locations of LOC's type |
5298 | on the current target. */ | |
5299 | ||
5300 | static int | |
5301 | need_moribund_for_location_type (struct bp_location *loc) | |
5302 | { | |
5303 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5304 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5305 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5306 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5307 | } | |
5308 | ||
ddfe970e | 5309 | /* See breakpoint.h. */ |
c906108c SS |
5310 | |
5311 | bpstat | |
ddfe970e | 5312 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5313 | const struct target_waitstatus *ws) |
c906108c | 5314 | { |
ddfe970e | 5315 | struct breakpoint *b; |
5760d0ab | 5316 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5317 | |
429374b8 JK |
5318 | ALL_BREAKPOINTS (b) |
5319 | { | |
1a853c52 | 5320 | if (!breakpoint_enabled (b)) |
429374b8 | 5321 | continue; |
a5606eee | 5322 | |
ddfe970e | 5323 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5324 | { |
4a64f543 MS |
5325 | /* For hardware watchpoints, we look only at the first |
5326 | location. The watchpoint_check function will work on the | |
5327 | entire expression, not the individual locations. For | |
5328 | read watchpoints, the watchpoints_triggered function has | |
5329 | checked all locations already. */ | |
429374b8 JK |
5330 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5331 | break; | |
18a18393 | 5332 | |
f6592439 | 5333 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5334 | continue; |
c5aa993b | 5335 | |
09ac7c10 | 5336 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5337 | continue; |
c5aa993b | 5338 | |
4a64f543 MS |
5339 | /* Come here if it's a watchpoint, or if the break address |
5340 | matches. */ | |
c5aa993b | 5341 | |
ddfe970e KS |
5342 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5343 | explain stop. */ | |
c5aa993b | 5344 | |
f431efe5 PA |
5345 | /* Assume we stop. Should we find a watchpoint that is not |
5346 | actually triggered, or if the condition of the breakpoint | |
5347 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5348 | bs->stop = 1; |
5349 | bs->print = 1; | |
d983da9c | 5350 | |
f431efe5 PA |
5351 | /* If this is a scope breakpoint, mark the associated |
5352 | watchpoint as triggered so that we will handle the | |
5353 | out-of-scope event. We'll get to the watchpoint next | |
5354 | iteration. */ | |
d0fb5eae | 5355 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5356 | { |
5357 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5358 | ||
5359 | w->watchpoint_triggered = watch_triggered_yes; | |
5360 | } | |
f431efe5 PA |
5361 | } |
5362 | } | |
5363 | ||
7c16b83e | 5364 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5365 | if (!target_supports_stopped_by_sw_breakpoint () |
5366 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5367 | { |
1123588c | 5368 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5369 | { |
1cf4d951 PA |
5370 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5371 | && need_moribund_for_location_type (loc)) | |
5372 | { | |
ddfe970e | 5373 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5374 | /* For hits of moribund locations, we should just proceed. */ |
5375 | bs->stop = 0; | |
5376 | bs->print = 0; | |
5377 | bs->print_it = print_it_noop; | |
5378 | } | |
f431efe5 PA |
5379 | } |
5380 | } | |
5381 | ||
ddfe970e KS |
5382 | return bs_head; |
5383 | } | |
5384 | ||
5385 | /* See breakpoint.h. */ | |
5386 | ||
5387 | bpstat | |
5388 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5389 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5390 | const struct target_waitstatus *ws, |
5391 | bpstat stop_chain) | |
5392 | { | |
5393 | struct breakpoint *b = NULL; | |
5394 | /* First item of allocated bpstat's. */ | |
5395 | bpstat bs_head = stop_chain; | |
5396 | bpstat bs; | |
5397 | int need_remove_insert; | |
5398 | int removed_any; | |
5399 | ||
5400 | /* First, build the bpstat chain with locations that explain a | |
5401 | target stop, while being careful to not set the target running, | |
5402 | as that may invalidate locations (in particular watchpoint | |
5403 | locations are recreated). Resuming will happen here with | |
5404 | breakpoint conditions or watchpoint expressions that include | |
5405 | inferior function calls. */ | |
5406 | if (bs_head == NULL) | |
5407 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5408 | ||
edcc5120 TT |
5409 | /* A bit of special processing for shlib breakpoints. We need to |
5410 | process solib loading here, so that the lists of loaded and | |
5411 | unloaded libraries are correct before we handle "catch load" and | |
5412 | "catch unload". */ | |
5413 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5414 | { | |
5d268276 | 5415 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5416 | { |
5417 | handle_solib_event (); | |
5418 | break; | |
5419 | } | |
5420 | } | |
5421 | ||
f431efe5 PA |
5422 | /* Now go through the locations that caused the target to stop, and |
5423 | check whether we're interested in reporting this stop to higher | |
5424 | layers, or whether we should resume the target transparently. */ | |
5425 | ||
5426 | removed_any = 0; | |
5427 | ||
5760d0ab | 5428 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5429 | { |
5430 | if (!bs->stop) | |
5431 | continue; | |
5432 | ||
f431efe5 | 5433 | b = bs->breakpoint_at; |
348d480f PA |
5434 | b->ops->check_status (bs); |
5435 | if (bs->stop) | |
28010a5d | 5436 | { |
00431a78 | 5437 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5438 | |
429374b8 JK |
5439 | if (bs->stop) |
5440 | { | |
5441 | ++(b->hit_count); | |
76727919 | 5442 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5443 | |
4a64f543 | 5444 | /* We will stop here. */ |
429374b8 JK |
5445 | if (b->disposition == disp_disable) |
5446 | { | |
816338b5 | 5447 | --(b->enable_count); |
1a853c52 | 5448 | if (b->enable_count <= 0) |
429374b8 | 5449 | b->enable_state = bp_disabled; |
f431efe5 | 5450 | removed_any = 1; |
429374b8 JK |
5451 | } |
5452 | if (b->silent) | |
5453 | bs->print = 0; | |
5454 | bs->commands = b->commands; | |
abf85f46 | 5455 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5456 | ? bs->commands.get () : NULL)) |
abf85f46 | 5457 | bs->print = 0; |
9d6e6e84 HZ |
5458 | |
5459 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5460 | } |
5461 | ||
348d480f | 5462 | } |
a9b3a50f PA |
5463 | |
5464 | /* Print nothing for this entry if we don't stop or don't | |
5465 | print. */ | |
5466 | if (!bs->stop || !bs->print) | |
5467 | bs->print_it = print_it_noop; | |
429374b8 | 5468 | } |
876fa593 | 5469 | |
d983da9c DJ |
5470 | /* If we aren't stopping, the value of some hardware watchpoint may |
5471 | not have changed, but the intermediate memory locations we are | |
5472 | watching may have. Don't bother if we're stopping; this will get | |
5473 | done later. */ | |
d832cb68 | 5474 | need_remove_insert = 0; |
5760d0ab JK |
5475 | if (! bpstat_causes_stop (bs_head)) |
5476 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5477 | if (!bs->stop |
f431efe5 PA |
5478 | && bs->breakpoint_at |
5479 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5480 | { |
3a5c3e22 PA |
5481 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5482 | ||
5483 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5484 | need_remove_insert = 1; |
d983da9c DJ |
5485 | } |
5486 | ||
d832cb68 | 5487 | if (need_remove_insert) |
44702360 | 5488 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5489 | else if (removed_any) |
44702360 | 5490 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5491 | |
5760d0ab | 5492 | return bs_head; |
c906108c | 5493 | } |
628fe4e4 JK |
5494 | |
5495 | static void | |
5496 | handle_jit_event (void) | |
5497 | { | |
5498 | struct frame_info *frame; | |
5499 | struct gdbarch *gdbarch; | |
5500 | ||
243a9253 PA |
5501 | if (debug_infrun) |
5502 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5503 | ||
628fe4e4 JK |
5504 | /* Switch terminal for any messages produced by |
5505 | breakpoint_re_set. */ | |
223ffa71 | 5506 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5507 | |
5508 | frame = get_current_frame (); | |
5509 | gdbarch = get_frame_arch (frame); | |
5510 | ||
5511 | jit_event_handler (gdbarch); | |
5512 | ||
223ffa71 | 5513 | target_terminal::inferior (); |
628fe4e4 JK |
5514 | } |
5515 | ||
5516 | /* Prepare WHAT final decision for infrun. */ | |
5517 | ||
5518 | /* Decide what infrun needs to do with this bpstat. */ | |
5519 | ||
c906108c | 5520 | struct bpstat_what |
0e30163f | 5521 | bpstat_what (bpstat bs_head) |
c906108c | 5522 | { |
c906108c | 5523 | struct bpstat_what retval; |
0e30163f | 5524 | bpstat bs; |
c906108c | 5525 | |
628fe4e4 | 5526 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5527 | retval.call_dummy = STOP_NONE; |
186c406b | 5528 | retval.is_longjmp = 0; |
628fe4e4 | 5529 | |
0e30163f | 5530 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5531 | { |
628fe4e4 JK |
5532 | /* Extract this BS's action. After processing each BS, we check |
5533 | if its action overrides all we've seem so far. */ | |
5534 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5535 | enum bptype bptype; | |
5536 | ||
c906108c | 5537 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5538 | { |
5539 | /* I suspect this can happen if it was a momentary | |
5540 | breakpoint which has since been deleted. */ | |
5541 | bptype = bp_none; | |
5542 | } | |
20874c92 | 5543 | else |
f431efe5 | 5544 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5545 | |
5546 | switch (bptype) | |
c906108c SS |
5547 | { |
5548 | case bp_none: | |
628fe4e4 | 5549 | break; |
c906108c SS |
5550 | case bp_breakpoint: |
5551 | case bp_hardware_breakpoint: | |
7c16b83e | 5552 | case bp_single_step: |
c906108c SS |
5553 | case bp_until: |
5554 | case bp_finish: | |
a9b3a50f | 5555 | case bp_shlib_event: |
c906108c SS |
5556 | if (bs->stop) |
5557 | { | |
5558 | if (bs->print) | |
628fe4e4 | 5559 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5560 | else |
628fe4e4 | 5561 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5562 | } |
5563 | else | |
628fe4e4 | 5564 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5565 | break; |
5566 | case bp_watchpoint: | |
5567 | case bp_hardware_watchpoint: | |
5568 | case bp_read_watchpoint: | |
5569 | case bp_access_watchpoint: | |
5570 | if (bs->stop) | |
5571 | { | |
5572 | if (bs->print) | |
628fe4e4 | 5573 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5574 | else |
628fe4e4 | 5575 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5576 | } |
5577 | else | |
628fe4e4 JK |
5578 | { |
5579 | /* There was a watchpoint, but we're not stopping. | |
5580 | This requires no further action. */ | |
5581 | } | |
c906108c SS |
5582 | break; |
5583 | case bp_longjmp: | |
e2e4d78b | 5584 | case bp_longjmp_call_dummy: |
186c406b | 5585 | case bp_exception: |
0a39bb32 PA |
5586 | if (bs->stop) |
5587 | { | |
5588 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5589 | retval.is_longjmp = bptype != bp_exception; | |
5590 | } | |
5591 | else | |
5592 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5593 | break; |
5594 | case bp_longjmp_resume: | |
186c406b | 5595 | case bp_exception_resume: |
0a39bb32 PA |
5596 | if (bs->stop) |
5597 | { | |
5598 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5599 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5600 | } | |
5601 | else | |
5602 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5603 | break; |
5604 | case bp_step_resume: | |
5605 | if (bs->stop) | |
628fe4e4 JK |
5606 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5607 | else | |
c906108c | 5608 | { |
628fe4e4 JK |
5609 | /* It is for the wrong frame. */ |
5610 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5611 | } |
c906108c | 5612 | break; |
2c03e5be PA |
5613 | case bp_hp_step_resume: |
5614 | if (bs->stop) | |
5615 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5616 | else | |
5617 | { | |
5618 | /* It is for the wrong frame. */ | |
5619 | this_action = BPSTAT_WHAT_SINGLE; | |
5620 | } | |
5621 | break; | |
c906108c | 5622 | case bp_watchpoint_scope: |
c4093a6a | 5623 | case bp_thread_event: |
1900040c | 5624 | case bp_overlay_event: |
0fd8e87f | 5625 | case bp_longjmp_master: |
aa7d318d | 5626 | case bp_std_terminate_master: |
186c406b | 5627 | case bp_exception_master: |
628fe4e4 | 5628 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5629 | break; |
ce78b96d | 5630 | case bp_catchpoint: |
c5aa993b JM |
5631 | if (bs->stop) |
5632 | { | |
5633 | if (bs->print) | |
628fe4e4 | 5634 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5635 | else |
628fe4e4 | 5636 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5637 | } |
5638 | else | |
628fe4e4 JK |
5639 | { |
5640 | /* There was a catchpoint, but we're not stopping. | |
5641 | This requires no further action. */ | |
5642 | } | |
5643 | break; | |
628fe4e4 | 5644 | case bp_jit_event: |
628fe4e4 | 5645 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5646 | break; |
c906108c | 5647 | case bp_call_dummy: |
53a5351d JM |
5648 | /* Make sure the action is stop (silent or noisy), |
5649 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5650 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5651 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5652 | break; |
5653 | case bp_std_terminate: | |
5654 | /* Make sure the action is stop (silent or noisy), | |
5655 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5656 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5657 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5658 | break; |
1042e4c0 | 5659 | case bp_tracepoint: |
7a697b8d | 5660 | case bp_fast_tracepoint: |
0fb4aa4b | 5661 | case bp_static_tracepoint: |
1042e4c0 SS |
5662 | /* Tracepoint hits should not be reported back to GDB, and |
5663 | if one got through somehow, it should have been filtered | |
5664 | out already. */ | |
5665 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5666 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5667 | break; |
5668 | case bp_gnu_ifunc_resolver: | |
5669 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5670 | this_action = BPSTAT_WHAT_SINGLE; | |
5671 | break; | |
5672 | case bp_gnu_ifunc_resolver_return: | |
5673 | /* The breakpoint will be removed, execution will restart from the | |
5674 | PC of the former breakpoint. */ | |
5675 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5676 | break; | |
e7e0cddf SS |
5677 | |
5678 | case bp_dprintf: | |
a11cfd87 HZ |
5679 | if (bs->stop) |
5680 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5681 | else | |
5682 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5683 | break; |
5684 | ||
628fe4e4 JK |
5685 | default: |
5686 | internal_error (__FILE__, __LINE__, | |
5687 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5688 | } |
628fe4e4 | 5689 | |
325fac50 | 5690 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5691 | } |
628fe4e4 | 5692 | |
243a9253 PA |
5693 | return retval; |
5694 | } | |
628fe4e4 | 5695 | |
243a9253 PA |
5696 | void |
5697 | bpstat_run_callbacks (bpstat bs_head) | |
5698 | { | |
5699 | bpstat bs; | |
628fe4e4 | 5700 | |
0e30163f JK |
5701 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5702 | { | |
5703 | struct breakpoint *b = bs->breakpoint_at; | |
5704 | ||
5705 | if (b == NULL) | |
5706 | continue; | |
5707 | switch (b->type) | |
5708 | { | |
243a9253 PA |
5709 | case bp_jit_event: |
5710 | handle_jit_event (); | |
5711 | break; | |
0e30163f JK |
5712 | case bp_gnu_ifunc_resolver: |
5713 | gnu_ifunc_resolver_stop (b); | |
5714 | break; | |
5715 | case bp_gnu_ifunc_resolver_return: | |
5716 | gnu_ifunc_resolver_return_stop (b); | |
5717 | break; | |
5718 | } | |
5719 | } | |
c906108c SS |
5720 | } |
5721 | ||
5722 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5723 | without hardware support). This isn't related to a specific bpstat, | |
5724 | just to things like whether watchpoints are set. */ | |
5725 | ||
c5aa993b | 5726 | int |
fba45db2 | 5727 | bpstat_should_step (void) |
c906108c SS |
5728 | { |
5729 | struct breakpoint *b; | |
cc59ec59 | 5730 | |
c906108c | 5731 | ALL_BREAKPOINTS (b) |
717a8278 | 5732 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5733 | return 1; |
c906108c SS |
5734 | return 0; |
5735 | } | |
5736 | ||
67822962 PA |
5737 | int |
5738 | bpstat_causes_stop (bpstat bs) | |
5739 | { | |
5740 | for (; bs != NULL; bs = bs->next) | |
5741 | if (bs->stop) | |
5742 | return 1; | |
5743 | ||
5744 | return 0; | |
5745 | } | |
5746 | ||
c906108c | 5747 | \f |
c5aa993b | 5748 | |
170b53b2 UW |
5749 | /* Compute a string of spaces suitable to indent the next line |
5750 | so it starts at the position corresponding to the table column | |
5751 | named COL_NAME in the currently active table of UIOUT. */ | |
5752 | ||
5753 | static char * | |
5754 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5755 | { | |
5756 | static char wrap_indent[80]; | |
5757 | int i, total_width, width, align; | |
c5209615 | 5758 | const char *text; |
170b53b2 UW |
5759 | |
5760 | total_width = 0; | |
112e8700 | 5761 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5762 | { |
5763 | if (strcmp (text, col_name) == 0) | |
5764 | { | |
5765 | gdb_assert (total_width < sizeof wrap_indent); | |
5766 | memset (wrap_indent, ' ', total_width); | |
5767 | wrap_indent[total_width] = 0; | |
5768 | ||
5769 | return wrap_indent; | |
5770 | } | |
5771 | ||
5772 | total_width += width + 1; | |
5773 | } | |
5774 | ||
5775 | return NULL; | |
5776 | } | |
5777 | ||
b775012e LM |
5778 | /* Determine if the locations of this breakpoint will have their conditions |
5779 | evaluated by the target, host or a mix of both. Returns the following: | |
5780 | ||
5781 | "host": Host evals condition. | |
5782 | "host or target": Host or Target evals condition. | |
5783 | "target": Target evals condition. | |
5784 | */ | |
5785 | ||
5786 | static const char * | |
5787 | bp_condition_evaluator (struct breakpoint *b) | |
5788 | { | |
5789 | struct bp_location *bl; | |
5790 | char host_evals = 0; | |
5791 | char target_evals = 0; | |
5792 | ||
5793 | if (!b) | |
5794 | return NULL; | |
5795 | ||
5796 | if (!is_breakpoint (b)) | |
5797 | return NULL; | |
5798 | ||
5799 | if (gdb_evaluates_breakpoint_condition_p () | |
5800 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5801 | return condition_evaluation_host; | |
5802 | ||
5803 | for (bl = b->loc; bl; bl = bl->next) | |
5804 | { | |
5805 | if (bl->cond_bytecode) | |
5806 | target_evals++; | |
5807 | else | |
5808 | host_evals++; | |
5809 | } | |
5810 | ||
5811 | if (host_evals && target_evals) | |
5812 | return condition_evaluation_both; | |
5813 | else if (target_evals) | |
5814 | return condition_evaluation_target; | |
5815 | else | |
5816 | return condition_evaluation_host; | |
5817 | } | |
5818 | ||
5819 | /* Determine the breakpoint location's condition evaluator. This is | |
5820 | similar to bp_condition_evaluator, but for locations. */ | |
5821 | ||
5822 | static const char * | |
5823 | bp_location_condition_evaluator (struct bp_location *bl) | |
5824 | { | |
5825 | if (bl && !is_breakpoint (bl->owner)) | |
5826 | return NULL; | |
5827 | ||
5828 | if (gdb_evaluates_breakpoint_condition_p () | |
5829 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5830 | return condition_evaluation_host; | |
5831 | ||
5832 | if (bl && bl->cond_bytecode) | |
5833 | return condition_evaluation_target; | |
5834 | else | |
5835 | return condition_evaluation_host; | |
5836 | } | |
5837 | ||
859825b8 JK |
5838 | /* Print the LOC location out of the list of B->LOC locations. */ |
5839 | ||
170b53b2 UW |
5840 | static void |
5841 | print_breakpoint_location (struct breakpoint *b, | |
5842 | struct bp_location *loc) | |
0d381245 | 5843 | { |
79a45e25 | 5844 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5845 | |
5846 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5847 | |
859825b8 JK |
5848 | if (loc != NULL && loc->shlib_disabled) |
5849 | loc = NULL; | |
5850 | ||
6c95b8df PA |
5851 | if (loc != NULL) |
5852 | set_current_program_space (loc->pspace); | |
5853 | ||
56435ebe | 5854 | if (b->display_canonical) |
d28cd78a | 5855 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5856 | else if (loc && loc->symtab) |
0d381245 | 5857 | { |
4a27f119 KS |
5858 | const struct symbol *sym = loc->symbol; |
5859 | ||
0d381245 VP |
5860 | if (sym) |
5861 | { | |
112e8700 SM |
5862 | uiout->text ("in "); |
5863 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5864 | uiout->text (" "); | |
5865 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5866 | uiout->text ("at "); | |
0d381245 | 5867 | } |
112e8700 | 5868 | uiout->field_string ("file", |
05cba821 | 5869 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5870 | uiout->text (":"); |
05cba821 | 5871 | |
112e8700 SM |
5872 | if (uiout->is_mi_like_p ()) |
5873 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5874 | |
112e8700 | 5875 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5876 | } |
859825b8 | 5877 | else if (loc) |
0d381245 | 5878 | { |
d7e74731 | 5879 | string_file stb; |
170b53b2 | 5880 | |
d7e74731 | 5881 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5882 | demangle, ""); |
112e8700 | 5883 | uiout->field_stream ("at", stb); |
0d381245 | 5884 | } |
859825b8 | 5885 | else |
f00aae0f | 5886 | { |
d28cd78a TT |
5887 | uiout->field_string ("pending", |
5888 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5889 | /* If extra_string is available, it could be holding a condition |
5890 | or dprintf arguments. In either case, make sure it is printed, | |
5891 | too, but only for non-MI streams. */ | |
112e8700 | 5892 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5893 | { |
5894 | if (b->type == bp_dprintf) | |
112e8700 | 5895 | uiout->text (","); |
f00aae0f | 5896 | else |
112e8700 SM |
5897 | uiout->text (" "); |
5898 | uiout->text (b->extra_string); | |
f00aae0f KS |
5899 | } |
5900 | } | |
6c95b8df | 5901 | |
b775012e LM |
5902 | if (loc && is_breakpoint (b) |
5903 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5904 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5905 | { | |
112e8700 SM |
5906 | uiout->text (" ("); |
5907 | uiout->field_string ("evaluated-by", | |
b775012e | 5908 | bp_location_condition_evaluator (loc)); |
112e8700 | 5909 | uiout->text (")"); |
b775012e | 5910 | } |
0d381245 VP |
5911 | } |
5912 | ||
269b11a2 PA |
5913 | static const char * |
5914 | bptype_string (enum bptype type) | |
c906108c | 5915 | { |
c4093a6a JM |
5916 | struct ep_type_description |
5917 | { | |
5918 | enum bptype type; | |
a121b7c1 | 5919 | const char *description; |
c4093a6a JM |
5920 | }; |
5921 | static struct ep_type_description bptypes[] = | |
c906108c | 5922 | { |
c5aa993b JM |
5923 | {bp_none, "?deleted?"}, |
5924 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5925 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5926 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5927 | {bp_until, "until"}, |
5928 | {bp_finish, "finish"}, | |
5929 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5930 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5931 | {bp_read_watchpoint, "read watchpoint"}, |
5932 | {bp_access_watchpoint, "acc watchpoint"}, | |
5933 | {bp_longjmp, "longjmp"}, | |
5934 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5935 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5936 | {bp_exception, "exception"}, |
5937 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5938 | {bp_step_resume, "step resume"}, |
2c03e5be | 5939 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5940 | {bp_watchpoint_scope, "watchpoint scope"}, |
5941 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5942 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5943 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5944 | {bp_thread_event, "thread events"}, |
1900040c | 5945 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5946 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5947 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5948 | {bp_exception_master, "exception master"}, |
ce78b96d | 5949 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5950 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5951 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5952 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5953 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5954 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5955 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5956 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5957 | }; |
269b11a2 PA |
5958 | |
5959 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5960 | || ((int) type != bptypes[(int) type].type)) | |
5961 | internal_error (__FILE__, __LINE__, | |
5962 | _("bptypes table does not describe type #%d."), | |
5963 | (int) type); | |
5964 | ||
5965 | return bptypes[(int) type].description; | |
5966 | } | |
5967 | ||
998580f1 MK |
5968 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5969 | For CLI, prefix the list with the string 'inf'. */ | |
5970 | ||
5971 | static void | |
5972 | output_thread_groups (struct ui_out *uiout, | |
5973 | const char *field_name, | |
5c632425 | 5974 | const std::vector<int> &inf_nums, |
998580f1 MK |
5975 | int mi_only) |
5976 | { | |
112e8700 | 5977 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5978 | |
5979 | /* For backward compatibility, don't display inferiors in CLI unless | |
5980 | there are several. Always display them for MI. */ | |
5981 | if (!is_mi && mi_only) | |
5982 | return; | |
5983 | ||
10f489e5 | 5984 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5985 | |
5c632425 | 5986 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5987 | { |
5988 | if (is_mi) | |
5989 | { | |
5990 | char mi_group[10]; | |
5991 | ||
5c632425 | 5992 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5993 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5994 | } |
5995 | else | |
5996 | { | |
5997 | if (i == 0) | |
112e8700 | 5998 | uiout->text (" inf "); |
998580f1 | 5999 | else |
112e8700 | 6000 | uiout->text (", "); |
998580f1 | 6001 | |
5c632425 | 6002 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6003 | } |
6004 | } | |
998580f1 MK |
6005 | } |
6006 | ||
269b11a2 PA |
6007 | /* Print B to gdb_stdout. */ |
6008 | ||
6009 | static void | |
6010 | print_one_breakpoint_location (struct breakpoint *b, | |
6011 | struct bp_location *loc, | |
6012 | int loc_number, | |
6013 | struct bp_location **last_loc, | |
269b11a2 PA |
6014 | int allflag) |
6015 | { | |
6016 | struct command_line *l; | |
c2c6d25f | 6017 | static char bpenables[] = "nynny"; |
c906108c | 6018 | |
79a45e25 | 6019 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6020 | int header_of_multiple = 0; |
6021 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6022 | struct value_print_options opts; |
6023 | ||
6024 | get_user_print_options (&opts); | |
0d381245 VP |
6025 | |
6026 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6027 | /* See comment in print_one_breakpoint concerning treatment of |
6028 | breakpoints with single disabled location. */ | |
0d381245 VP |
6029 | if (loc == NULL |
6030 | && (b->loc != NULL | |
6031 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6032 | header_of_multiple = 1; | |
6033 | if (loc == NULL) | |
6034 | loc = b->loc; | |
6035 | ||
c4093a6a JM |
6036 | annotate_record (); |
6037 | ||
6038 | /* 1 */ | |
6039 | annotate_field (0); | |
0d381245 | 6040 | if (part_of_multiple) |
528e1572 | 6041 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6042 | else |
528e1572 | 6043 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6044 | |
6045 | /* 2 */ | |
6046 | annotate_field (1); | |
0d381245 | 6047 | if (part_of_multiple) |
112e8700 | 6048 | uiout->field_skip ("type"); |
269b11a2 | 6049 | else |
112e8700 | 6050 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6051 | |
6052 | /* 3 */ | |
6053 | annotate_field (2); | |
0d381245 | 6054 | if (part_of_multiple) |
112e8700 | 6055 | uiout->field_skip ("disp"); |
0d381245 | 6056 | else |
112e8700 | 6057 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6058 | |
c4093a6a JM |
6059 | /* 4 */ |
6060 | annotate_field (3); | |
0d381245 | 6061 | if (part_of_multiple) |
112e8700 | 6062 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6063 | else |
112e8700 | 6064 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6065 | |
c4093a6a | 6066 | /* 5 and 6 */ |
3086aeae | 6067 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6068 | { |
4a64f543 MS |
6069 | /* Although the print_one can possibly print all locations, |
6070 | calling it here is not likely to get any nice result. So, | |
6071 | make sure there's just one location. */ | |
0d381245 | 6072 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6073 | b->ops->print_one (b, last_loc); |
0d381245 | 6074 | } |
3086aeae DJ |
6075 | else |
6076 | switch (b->type) | |
6077 | { | |
6078 | case bp_none: | |
6079 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6080 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6081 | break; |
c906108c | 6082 | |
3086aeae DJ |
6083 | case bp_watchpoint: |
6084 | case bp_hardware_watchpoint: | |
6085 | case bp_read_watchpoint: | |
6086 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6087 | { |
6088 | struct watchpoint *w = (struct watchpoint *) b; | |
6089 | ||
6090 | /* Field 4, the address, is omitted (which makes the columns | |
6091 | not line up too nicely with the headers, but the effect | |
6092 | is relatively readable). */ | |
6093 | if (opts.addressprint) | |
112e8700 | 6094 | uiout->field_skip ("addr"); |
3a5c3e22 | 6095 | annotate_field (5); |
112e8700 | 6096 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6097 | } |
3086aeae DJ |
6098 | break; |
6099 | ||
3086aeae DJ |
6100 | case bp_breakpoint: |
6101 | case bp_hardware_breakpoint: | |
7c16b83e | 6102 | case bp_single_step: |
3086aeae DJ |
6103 | case bp_until: |
6104 | case bp_finish: | |
6105 | case bp_longjmp: | |
6106 | case bp_longjmp_resume: | |
e2e4d78b | 6107 | case bp_longjmp_call_dummy: |
186c406b TT |
6108 | case bp_exception: |
6109 | case bp_exception_resume: | |
3086aeae | 6110 | case bp_step_resume: |
2c03e5be | 6111 | case bp_hp_step_resume: |
3086aeae DJ |
6112 | case bp_watchpoint_scope: |
6113 | case bp_call_dummy: | |
aa7d318d | 6114 | case bp_std_terminate: |
3086aeae DJ |
6115 | case bp_shlib_event: |
6116 | case bp_thread_event: | |
6117 | case bp_overlay_event: | |
0fd8e87f | 6118 | case bp_longjmp_master: |
aa7d318d | 6119 | case bp_std_terminate_master: |
186c406b | 6120 | case bp_exception_master: |
1042e4c0 | 6121 | case bp_tracepoint: |
7a697b8d | 6122 | case bp_fast_tracepoint: |
0fb4aa4b | 6123 | case bp_static_tracepoint: |
e7e0cddf | 6124 | case bp_dprintf: |
4efc6507 | 6125 | case bp_jit_event: |
0e30163f JK |
6126 | case bp_gnu_ifunc_resolver: |
6127 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6128 | if (opts.addressprint) |
3086aeae DJ |
6129 | { |
6130 | annotate_field (4); | |
54e52265 | 6131 | if (header_of_multiple) |
112e8700 | 6132 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6133 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6134 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6135 | else |
112e8700 | 6136 | uiout->field_core_addr ("addr", |
5af949e3 | 6137 | loc->gdbarch, loc->address); |
3086aeae DJ |
6138 | } |
6139 | annotate_field (5); | |
0d381245 | 6140 | if (!header_of_multiple) |
170b53b2 | 6141 | print_breakpoint_location (b, loc); |
0d381245 | 6142 | if (b->loc) |
a6d9a66e | 6143 | *last_loc = b->loc; |
3086aeae DJ |
6144 | break; |
6145 | } | |
c906108c | 6146 | |
6c95b8df | 6147 | |
998580f1 | 6148 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6149 | { |
5c632425 | 6150 | std::vector<int> inf_nums; |
998580f1 | 6151 | int mi_only = 1; |
6c95b8df | 6152 | |
08036331 | 6153 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6154 | { |
6155 | if (inf->pspace == loc->pspace) | |
5c632425 | 6156 | inf_nums.push_back (inf->num); |
6c95b8df | 6157 | } |
998580f1 MK |
6158 | |
6159 | /* For backward compatibility, don't display inferiors in CLI unless | |
6160 | there are several. Always display for MI. */ | |
6161 | if (allflag | |
6162 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6163 | && (number_of_program_spaces () > 1 | |
6164 | || number_of_inferiors () > 1) | |
6165 | /* LOC is for existing B, it cannot be in | |
6166 | moribund_locations and thus having NULL OWNER. */ | |
6167 | && loc->owner->type != bp_catchpoint)) | |
6168 | mi_only = 0; | |
5c632425 | 6169 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6170 | } |
6171 | ||
4a306c9a | 6172 | if (!part_of_multiple) |
c4093a6a | 6173 | { |
4a306c9a JB |
6174 | if (b->thread != -1) |
6175 | { | |
6176 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6177 | "stop only in" line a little further down. */ |
112e8700 SM |
6178 | uiout->text (" thread "); |
6179 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6180 | } |
6181 | else if (b->task != 0) | |
6182 | { | |
112e8700 SM |
6183 | uiout->text (" task "); |
6184 | uiout->field_int ("task", b->task); | |
4a306c9a | 6185 | } |
c4093a6a | 6186 | } |
f1310107 | 6187 | |
112e8700 | 6188 | uiout->text ("\n"); |
f1310107 | 6189 | |
348d480f | 6190 | if (!part_of_multiple) |
f1310107 TJB |
6191 | b->ops->print_one_detail (b, uiout); |
6192 | ||
0d381245 | 6193 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6194 | { |
6195 | annotate_field (6); | |
112e8700 | 6196 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6197 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6198 | the frame ID. */ |
112e8700 | 6199 | uiout->field_core_addr ("frame", |
5af949e3 | 6200 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6201 | uiout->text ("\n"); |
c4093a6a JM |
6202 | } |
6203 | ||
28010a5d | 6204 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6205 | { |
6206 | annotate_field (7); | |
d77f58be | 6207 | if (is_tracepoint (b)) |
112e8700 | 6208 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6209 | else |
112e8700 SM |
6210 | uiout->text ("\tstop only if "); |
6211 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6212 | |
6213 | /* Print whether the target is doing the breakpoint's condition | |
6214 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6215 | if (is_breakpoint (b) | |
6216 | && breakpoint_condition_evaluation_mode () | |
6217 | == condition_evaluation_target) | |
6218 | { | |
112e8700 SM |
6219 | uiout->text (" ("); |
6220 | uiout->field_string ("evaluated-by", | |
b775012e | 6221 | bp_condition_evaluator (b)); |
112e8700 | 6222 | uiout->text (" evals)"); |
b775012e | 6223 | } |
112e8700 | 6224 | uiout->text ("\n"); |
0101ce28 JJ |
6225 | } |
6226 | ||
0d381245 | 6227 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6228 | { |
4a64f543 | 6229 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6230 | uiout->text ("\tstop only in thread "); |
6231 | if (uiout->is_mi_like_p ()) | |
6232 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6233 | else |
6234 | { | |
6235 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6236 | ||
112e8700 | 6237 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6238 | } |
112e8700 | 6239 | uiout->text ("\n"); |
c4093a6a JM |
6240 | } |
6241 | ||
556ec64d YQ |
6242 | if (!part_of_multiple) |
6243 | { | |
6244 | if (b->hit_count) | |
31f56a27 YQ |
6245 | { |
6246 | /* FIXME should make an annotation for this. */ | |
6247 | if (is_catchpoint (b)) | |
112e8700 | 6248 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6249 | else if (is_tracepoint (b)) |
112e8700 | 6250 | uiout->text ("\ttracepoint"); |
31f56a27 | 6251 | else |
112e8700 SM |
6252 | uiout->text ("\tbreakpoint"); |
6253 | uiout->text (" already hit "); | |
6254 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6255 | if (b->hit_count == 1) |
112e8700 | 6256 | uiout->text (" time\n"); |
31f56a27 | 6257 | else |
112e8700 | 6258 | uiout->text (" times\n"); |
31f56a27 | 6259 | } |
556ec64d YQ |
6260 | else |
6261 | { | |
31f56a27 | 6262 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6263 | if (uiout->is_mi_like_p ()) |
6264 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6265 | } |
6266 | } | |
8b93c638 | 6267 | |
0d381245 | 6268 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6269 | { |
6270 | annotate_field (8); | |
112e8700 SM |
6271 | uiout->text ("\tignore next "); |
6272 | uiout->field_int ("ignore", b->ignore_count); | |
6273 | uiout->text (" hits\n"); | |
c4093a6a | 6274 | } |
059fb39f | 6275 | |
816338b5 SS |
6276 | /* Note that an enable count of 1 corresponds to "enable once" |
6277 | behavior, which is reported by the combination of enablement and | |
6278 | disposition, so we don't need to mention it here. */ | |
6279 | if (!part_of_multiple && b->enable_count > 1) | |
6280 | { | |
6281 | annotate_field (8); | |
112e8700 | 6282 | uiout->text ("\tdisable after "); |
816338b5 SS |
6283 | /* Tweak the wording to clarify that ignore and enable counts |
6284 | are distinct, and have additive effect. */ | |
6285 | if (b->ignore_count) | |
112e8700 | 6286 | uiout->text ("additional "); |
816338b5 | 6287 | else |
112e8700 SM |
6288 | uiout->text ("next "); |
6289 | uiout->field_int ("enable", b->enable_count); | |
6290 | uiout->text (" hits\n"); | |
816338b5 SS |
6291 | } |
6292 | ||
f196051f SS |
6293 | if (!part_of_multiple && is_tracepoint (b)) |
6294 | { | |
6295 | struct tracepoint *tp = (struct tracepoint *) b; | |
6296 | ||
6297 | if (tp->traceframe_usage) | |
6298 | { | |
112e8700 SM |
6299 | uiout->text ("\ttrace buffer usage "); |
6300 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6301 | uiout->text (" bytes\n"); | |
f196051f SS |
6302 | } |
6303 | } | |
d3ce09f5 | 6304 | |
d1b0a7bf | 6305 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6306 | if (!part_of_multiple && l) |
c4093a6a JM |
6307 | { |
6308 | annotate_field (9); | |
2e783024 | 6309 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6310 | print_command_lines (uiout, l, 4); |
c4093a6a | 6311 | } |
d24317b4 | 6312 | |
d9b3f62e | 6313 | if (is_tracepoint (b)) |
1042e4c0 | 6314 | { |
d9b3f62e PA |
6315 | struct tracepoint *t = (struct tracepoint *) b; |
6316 | ||
6317 | if (!part_of_multiple && t->pass_count) | |
6318 | { | |
6319 | annotate_field (10); | |
112e8700 SM |
6320 | uiout->text ("\tpass count "); |
6321 | uiout->field_int ("pass", t->pass_count); | |
6322 | uiout->text (" \n"); | |
d9b3f62e | 6323 | } |
f2a8bc8a YQ |
6324 | |
6325 | /* Don't display it when tracepoint or tracepoint location is | |
6326 | pending. */ | |
6327 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6328 | { | |
6329 | annotate_field (11); | |
6330 | ||
112e8700 SM |
6331 | if (uiout->is_mi_like_p ()) |
6332 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6333 | loc->inserted ? "y" : "n"); |
6334 | else | |
6335 | { | |
6336 | if (loc->inserted) | |
112e8700 | 6337 | uiout->text ("\t"); |
f2a8bc8a | 6338 | else |
112e8700 SM |
6339 | uiout->text ("\tnot "); |
6340 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6341 | } |
6342 | } | |
1042e4c0 SS |
6343 | } |
6344 | ||
112e8700 | 6345 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6346 | { |
3a5c3e22 PA |
6347 | if (is_watchpoint (b)) |
6348 | { | |
6349 | struct watchpoint *w = (struct watchpoint *) b; | |
6350 | ||
112e8700 | 6351 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6352 | } |
f00aae0f | 6353 | else if (b->location != NULL |
d28cd78a | 6354 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6355 | uiout->field_string ("original-location", |
d28cd78a | 6356 | event_location_to_string (b->location.get ())); |
d24317b4 | 6357 | } |
c4093a6a | 6358 | } |
c5aa993b | 6359 | |
0d381245 VP |
6360 | static void |
6361 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6362 | struct bp_location **last_loc, |
6c95b8df | 6363 | int allflag) |
0d381245 | 6364 | { |
79a45e25 | 6365 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6366 | |
2e783024 TT |
6367 | { |
6368 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6369 | |
2e783024 TT |
6370 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6371 | } | |
0d381245 VP |
6372 | |
6373 | /* If this breakpoint has custom print function, | |
6374 | it's already printed. Otherwise, print individual | |
6375 | locations, if any. */ | |
6376 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6377 | { | |
4a64f543 MS |
6378 | /* If breakpoint has a single location that is disabled, we |
6379 | print it as if it had several locations, since otherwise it's | |
6380 | hard to represent "breakpoint enabled, location disabled" | |
6381 | situation. | |
6382 | ||
6383 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6384 | internally, that's not a property exposed to user. */ |
0d381245 | 6385 | if (b->loc |
a5606eee | 6386 | && !is_hardware_watchpoint (b) |
8d3788bd | 6387 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6388 | { |
6389 | struct bp_location *loc; | |
6390 | int n = 1; | |
8d3788bd | 6391 | |
0d381245 | 6392 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6393 | { |
2e783024 | 6394 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6395 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6396 | } |
0d381245 VP |
6397 | } |
6398 | } | |
6399 | } | |
6400 | ||
a6d9a66e UW |
6401 | static int |
6402 | breakpoint_address_bits (struct breakpoint *b) | |
6403 | { | |
6404 | int print_address_bits = 0; | |
6405 | struct bp_location *loc; | |
6406 | ||
c6d81124 PA |
6407 | /* Software watchpoints that aren't watching memory don't have an |
6408 | address to print. */ | |
6409 | if (is_no_memory_software_watchpoint (b)) | |
6410 | return 0; | |
6411 | ||
a6d9a66e UW |
6412 | for (loc = b->loc; loc; loc = loc->next) |
6413 | { | |
c7437ca6 PA |
6414 | int addr_bit; |
6415 | ||
c7437ca6 | 6416 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6417 | if (addr_bit > print_address_bits) |
6418 | print_address_bits = addr_bit; | |
6419 | } | |
6420 | ||
6421 | return print_address_bits; | |
6422 | } | |
0d381245 | 6423 | |
65630365 | 6424 | /* See breakpoint.h. */ |
c5aa993b | 6425 | |
65630365 PA |
6426 | void |
6427 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6428 | { |
a6d9a66e | 6429 | struct bp_location *dummy_loc = NULL; |
65630365 | 6430 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6431 | } |
c5aa993b | 6432 | |
09d682a4 TT |
6433 | /* Return true if this breakpoint was set by the user, false if it is |
6434 | internal or momentary. */ | |
6435 | ||
6436 | int | |
6437 | user_breakpoint_p (struct breakpoint *b) | |
6438 | { | |
46c6471b | 6439 | return b->number > 0; |
09d682a4 TT |
6440 | } |
6441 | ||
93daf339 TT |
6442 | /* See breakpoint.h. */ |
6443 | ||
6444 | int | |
6445 | pending_breakpoint_p (struct breakpoint *b) | |
6446 | { | |
6447 | return b->loc == NULL; | |
6448 | } | |
6449 | ||
7f3b0473 | 6450 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6451 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6452 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6453 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6454 | ones for which it returns non-zero. Return the total number of | |
6455 | breakpoints listed. */ | |
c906108c | 6456 | |
d77f58be | 6457 | static int |
4495129a | 6458 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6459 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6460 | { |
52f0bd74 | 6461 | struct breakpoint *b; |
a6d9a66e | 6462 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6463 | int nr_printable_breakpoints; |
79a45b7d | 6464 | struct value_print_options opts; |
a6d9a66e | 6465 | int print_address_bits = 0; |
269b11a2 | 6466 | int print_type_col_width = 14; |
79a45e25 | 6467 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6468 | |
79a45b7d TT |
6469 | get_user_print_options (&opts); |
6470 | ||
4a64f543 MS |
6471 | /* Compute the number of rows in the table, as well as the size |
6472 | required for address fields. */ | |
7f3b0473 AC |
6473 | nr_printable_breakpoints = 0; |
6474 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6475 | { |
6476 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6477 | if (filter && !filter (b)) | |
6478 | continue; | |
6479 | ||
6480 | /* If we have an "args" string, it is a list of breakpoints to | |
6481 | accept. Skip the others. */ | |
6482 | if (args != NULL && *args != '\0') | |
6483 | { | |
6484 | if (allflag && parse_and_eval_long (args) != b->number) | |
6485 | continue; | |
6486 | if (!allflag && !number_is_in_list (args, b->number)) | |
6487 | continue; | |
6488 | } | |
269b11a2 | 6489 | |
e5a67952 MS |
6490 | if (allflag || user_breakpoint_p (b)) |
6491 | { | |
6492 | int addr_bit, type_len; | |
a6d9a66e | 6493 | |
e5a67952 MS |
6494 | addr_bit = breakpoint_address_bits (b); |
6495 | if (addr_bit > print_address_bits) | |
6496 | print_address_bits = addr_bit; | |
269b11a2 | 6497 | |
e5a67952 MS |
6498 | type_len = strlen (bptype_string (b->type)); |
6499 | if (type_len > print_type_col_width) | |
6500 | print_type_col_width = type_len; | |
6501 | ||
6502 | nr_printable_breakpoints++; | |
6503 | } | |
6504 | } | |
7f3b0473 | 6505 | |
4a2b031d TT |
6506 | { |
6507 | ui_out_emit_table table_emitter (uiout, | |
6508 | opts.addressprint ? 6 : 5, | |
6509 | nr_printable_breakpoints, | |
6510 | "BreakpointTable"); | |
6511 | ||
6512 | if (nr_printable_breakpoints > 0) | |
6513 | annotate_breakpoints_headers (); | |
6514 | if (nr_printable_breakpoints > 0) | |
6515 | annotate_field (0); | |
6516 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6517 | if (nr_printable_breakpoints > 0) | |
6518 | annotate_field (1); | |
6519 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6520 | if (nr_printable_breakpoints > 0) | |
6521 | annotate_field (2); | |
6522 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6523 | if (nr_printable_breakpoints > 0) | |
6524 | annotate_field (3); | |
6525 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6526 | if (opts.addressprint) | |
6527 | { | |
6528 | if (nr_printable_breakpoints > 0) | |
6529 | annotate_field (4); | |
6530 | if (print_address_bits <= 32) | |
6531 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6532 | else | |
6533 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6534 | } | |
6535 | if (nr_printable_breakpoints > 0) | |
6536 | annotate_field (5); | |
6537 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6538 | uiout->table_body (); | |
6539 | if (nr_printable_breakpoints > 0) | |
6540 | annotate_breakpoints_table (); | |
6541 | ||
6542 | ALL_BREAKPOINTS (b) | |
6543 | { | |
6544 | QUIT; | |
6545 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6546 | if (filter && !filter (b)) | |
6547 | continue; | |
e5a67952 | 6548 | |
4a2b031d TT |
6549 | /* If we have an "args" string, it is a list of breakpoints to |
6550 | accept. Skip the others. */ | |
e5a67952 | 6551 | |
4a2b031d TT |
6552 | if (args != NULL && *args != '\0') |
6553 | { | |
6554 | if (allflag) /* maintenance info breakpoint */ | |
6555 | { | |
6556 | if (parse_and_eval_long (args) != b->number) | |
6557 | continue; | |
6558 | } | |
6559 | else /* all others */ | |
6560 | { | |
6561 | if (!number_is_in_list (args, b->number)) | |
6562 | continue; | |
6563 | } | |
6564 | } | |
6565 | /* We only print out user settable breakpoints unless the | |
6566 | allflag is set. */ | |
6567 | if (allflag || user_breakpoint_p (b)) | |
6568 | print_one_breakpoint (b, &last_loc, allflag); | |
6569 | } | |
6570 | } | |
698384cd | 6571 | |
7f3b0473 | 6572 | if (nr_printable_breakpoints == 0) |
c906108c | 6573 | { |
4a64f543 MS |
6574 | /* If there's a filter, let the caller decide how to report |
6575 | empty list. */ | |
d77f58be SS |
6576 | if (!filter) |
6577 | { | |
e5a67952 | 6578 | if (args == NULL || *args == '\0') |
112e8700 | 6579 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6580 | else |
112e8700 | 6581 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6582 | args); |
d77f58be | 6583 | } |
c906108c SS |
6584 | } |
6585 | else | |
c4093a6a | 6586 | { |
a6d9a66e UW |
6587 | if (last_loc && !server_command) |
6588 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6589 | } |
c906108c | 6590 | |
4a64f543 | 6591 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6592 | there have been breakpoints? */ |
c906108c | 6593 | annotate_breakpoints_table_end (); |
d77f58be SS |
6594 | |
6595 | return nr_printable_breakpoints; | |
c906108c SS |
6596 | } |
6597 | ||
ad443146 SS |
6598 | /* Display the value of default-collect in a way that is generally |
6599 | compatible with the breakpoint list. */ | |
6600 | ||
6601 | static void | |
6602 | default_collect_info (void) | |
6603 | { | |
79a45e25 PA |
6604 | struct ui_out *uiout = current_uiout; |
6605 | ||
ad443146 SS |
6606 | /* If it has no value (which is frequently the case), say nothing; a |
6607 | message like "No default-collect." gets in user's face when it's | |
6608 | not wanted. */ | |
6609 | if (!*default_collect) | |
6610 | return; | |
6611 | ||
6612 | /* The following phrase lines up nicely with per-tracepoint collect | |
6613 | actions. */ | |
112e8700 SM |
6614 | uiout->text ("default collect "); |
6615 | uiout->field_string ("default-collect", default_collect); | |
6616 | uiout->text (" \n"); | |
ad443146 SS |
6617 | } |
6618 | ||
c906108c | 6619 | static void |
0b39b52e | 6620 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6621 | { |
e5a67952 | 6622 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6623 | |
6624 | default_collect_info (); | |
d77f58be SS |
6625 | } |
6626 | ||
6627 | static void | |
1d12d88f | 6628 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6629 | { |
e5a67952 | 6630 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6631 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6632 | |
6633 | if (num_printed == 0) | |
6634 | { | |
e5a67952 | 6635 | if (args == NULL || *args == '\0') |
112e8700 | 6636 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6637 | else |
112e8700 | 6638 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6639 | } |
c906108c SS |
6640 | } |
6641 | ||
7a292a7a | 6642 | static void |
4495129a | 6643 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6644 | { |
e5a67952 | 6645 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6646 | |
6647 | default_collect_info (); | |
c906108c SS |
6648 | } |
6649 | ||
0d381245 | 6650 | static int |
714835d5 | 6651 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6652 | struct program_space *pspace, |
714835d5 | 6653 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6654 | { |
6655 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6656 | |
0d381245 VP |
6657 | for (; bl; bl = bl->next) |
6658 | { | |
6c95b8df PA |
6659 | if (bl->pspace == pspace |
6660 | && bl->address == pc | |
0d381245 VP |
6661 | && (!overlay_debugging || bl->section == section)) |
6662 | return 1; | |
6663 | } | |
6664 | return 0; | |
6665 | } | |
6666 | ||
672f9b60 | 6667 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6668 | concerns with logical breakpoints, so we match program spaces, not |
6669 | address spaces. */ | |
c906108c SS |
6670 | |
6671 | static void | |
6c95b8df PA |
6672 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6673 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6674 | struct obj_section *section, int thread) |
c906108c | 6675 | { |
52f0bd74 AC |
6676 | int others = 0; |
6677 | struct breakpoint *b; | |
c906108c SS |
6678 | |
6679 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6680 | others += (user_breakpoint_p (b) |
6681 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6682 | if (others > 0) |
6683 | { | |
a3f17187 AC |
6684 | if (others == 1) |
6685 | printf_filtered (_("Note: breakpoint ")); | |
6686 | else /* if (others == ???) */ | |
6687 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6688 | ALL_BREAKPOINTS (b) |
672f9b60 | 6689 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6690 | { |
6691 | others--; | |
6692 | printf_filtered ("%d", b->number); | |
6693 | if (b->thread == -1 && thread != -1) | |
6694 | printf_filtered (" (all threads)"); | |
6695 | else if (b->thread != -1) | |
6696 | printf_filtered (" (thread %d)", b->thread); | |
6697 | printf_filtered ("%s%s ", | |
059fb39f | 6698 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6699 | || b->enable_state == bp_call_disabled) |
0d381245 | 6700 | ? " (disabled)" |
0d381245 VP |
6701 | : ""), |
6702 | (others > 1) ? "," | |
6703 | : ((others == 1) ? " and" : "")); | |
6704 | } | |
a3f17187 | 6705 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6706 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6707 | printf_filtered (".\n"); |
6708 | } | |
6709 | } | |
6710 | \f | |
c906108c | 6711 | |
e4f237da | 6712 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6713 | BPT locations. For some breakpoint types, the locations' address members |
6714 | are irrelevant and it makes no sense to attempt to compare them to other | |
6715 | addresses (or use them for any other purpose either). | |
e4f237da | 6716 | |
4a64f543 | 6717 | More specifically, each of the following breakpoint types will |
244558af | 6718 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6719 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6720 | breakpoint location at address zero: |
e4f237da KB |
6721 | |
6722 | bp_watchpoint | |
2d134ed3 PA |
6723 | bp_catchpoint |
6724 | ||
6725 | */ | |
e4f237da KB |
6726 | |
6727 | static int | |
6728 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6729 | { | |
6730 | enum bptype type = bpt->type; | |
6731 | ||
2d134ed3 PA |
6732 | return (type != bp_watchpoint && type != bp_catchpoint); |
6733 | } | |
6734 | ||
6735 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6736 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6737 | ||
6738 | static int | |
4a64f543 MS |
6739 | watchpoint_locations_match (struct bp_location *loc1, |
6740 | struct bp_location *loc2) | |
2d134ed3 | 6741 | { |
3a5c3e22 PA |
6742 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6743 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6744 | ||
6745 | /* Both of them must exist. */ | |
6746 | gdb_assert (w1 != NULL); | |
6747 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6748 | |
4a64f543 MS |
6749 | /* If the target can evaluate the condition expression in hardware, |
6750 | then we we need to insert both watchpoints even if they are at | |
6751 | the same place. Otherwise the watchpoint will only trigger when | |
6752 | the condition of whichever watchpoint was inserted evaluates to | |
6753 | true, not giving a chance for GDB to check the condition of the | |
6754 | other watchpoint. */ | |
3a5c3e22 | 6755 | if ((w1->cond_exp |
4a64f543 MS |
6756 | && target_can_accel_watchpoint_condition (loc1->address, |
6757 | loc1->length, | |
0cf6dd15 | 6758 | loc1->watchpoint_type, |
4d01a485 | 6759 | w1->cond_exp.get ())) |
3a5c3e22 | 6760 | || (w2->cond_exp |
4a64f543 MS |
6761 | && target_can_accel_watchpoint_condition (loc2->address, |
6762 | loc2->length, | |
0cf6dd15 | 6763 | loc2->watchpoint_type, |
4d01a485 | 6764 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6765 | return 0; |
6766 | ||
85d721b8 PA |
6767 | /* Note that this checks the owner's type, not the location's. In |
6768 | case the target does not support read watchpoints, but does | |
6769 | support access watchpoints, we'll have bp_read_watchpoint | |
6770 | watchpoints with hw_access locations. Those should be considered | |
6771 | duplicates of hw_read locations. The hw_read locations will | |
6772 | become hw_access locations later. */ | |
2d134ed3 PA |
6773 | return (loc1->owner->type == loc2->owner->type |
6774 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6775 | && loc1->address == loc2->address | |
6776 | && loc1->length == loc2->length); | |
e4f237da KB |
6777 | } |
6778 | ||
31e77af2 | 6779 | /* See breakpoint.h. */ |
6c95b8df | 6780 | |
31e77af2 | 6781 | int |
accd0bcd YQ |
6782 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6783 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6784 | { |
f5656ead | 6785 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6786 | || aspace1 == aspace2) |
6787 | && addr1 == addr2); | |
6788 | } | |
6789 | ||
f1310107 TJB |
6790 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6791 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6792 | matches ASPACE2. On targets that have global breakpoints, the address | |
6793 | space doesn't really matter. */ | |
6794 | ||
6795 | static int | |
accd0bcd YQ |
6796 | breakpoint_address_match_range (const address_space *aspace1, |
6797 | CORE_ADDR addr1, | |
6798 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6799 | CORE_ADDR addr2) |
6800 | { | |
f5656ead | 6801 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6802 | || aspace1 == aspace2) |
6803 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6804 | } | |
6805 | ||
6806 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6807 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6808 | matches the breakpoint's address space. On targets that have global | |
6809 | breakpoints, the address space doesn't really matter. */ | |
6810 | ||
6811 | static int | |
6812 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6813 | const address_space *aspace, |
f1310107 TJB |
6814 | CORE_ADDR addr) |
6815 | { | |
6816 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6817 | aspace, addr) | |
6818 | || (bl->length | |
6819 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6820 | bl->address, bl->length, | |
6821 | aspace, addr))); | |
6822 | } | |
6823 | ||
d35ae833 PA |
6824 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6825 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6826 | match happens only if ASPACE matches the breakpoint's address | |
6827 | space. On targets that have global breakpoints, the address space | |
6828 | doesn't really matter. */ | |
6829 | ||
6830 | static int | |
6831 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6832 | const address_space *aspace, |
d35ae833 PA |
6833 | CORE_ADDR addr, int len) |
6834 | { | |
6835 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6836 | || bl->pspace->aspace == aspace) | |
6837 | { | |
6838 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6839 | ||
6840 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6841 | return 1; | |
6842 | } | |
6843 | return 0; | |
6844 | } | |
6845 | ||
1e4d1764 YQ |
6846 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6847 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6848 | true, otherwise returns false. */ | |
6849 | ||
6850 | static int | |
6851 | tracepoint_locations_match (struct bp_location *loc1, | |
6852 | struct bp_location *loc2) | |
6853 | { | |
6854 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6855 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6856 | locations at the same address of different tracepoints are regarded as | |
6857 | different locations. */ | |
6858 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6859 | else | |
6860 | return 0; | |
6861 | } | |
6862 | ||
2d134ed3 PA |
6863 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6864 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6865 | represent the same location. */ | |
6866 | ||
6867 | static int | |
4a64f543 MS |
6868 | breakpoint_locations_match (struct bp_location *loc1, |
6869 | struct bp_location *loc2) | |
2d134ed3 | 6870 | { |
2bdf28a0 JK |
6871 | int hw_point1, hw_point2; |
6872 | ||
6873 | /* Both of them must not be in moribund_locations. */ | |
6874 | gdb_assert (loc1->owner != NULL); | |
6875 | gdb_assert (loc2->owner != NULL); | |
6876 | ||
6877 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6878 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6879 | |
6880 | if (hw_point1 != hw_point2) | |
6881 | return 0; | |
6882 | else if (hw_point1) | |
6883 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6884 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6885 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6886 | else |
f1310107 TJB |
6887 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6888 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6889 | loc2->pspace->aspace, loc2->address) | |
6890 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6891 | } |
6892 | ||
76897487 KB |
6893 | static void |
6894 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6895 | int bnum, int have_bnum) | |
6896 | { | |
f63fbe86 MS |
6897 | /* The longest string possibly returned by hex_string_custom |
6898 | is 50 chars. These must be at least that big for safety. */ | |
6899 | char astr1[64]; | |
6900 | char astr2[64]; | |
76897487 | 6901 | |
bb599908 PH |
6902 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6903 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6904 | if (have_bnum) |
8a3fe4f8 | 6905 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6906 | bnum, astr1, astr2); |
6907 | else | |
8a3fe4f8 | 6908 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6909 | } |
6910 | ||
4a64f543 MS |
6911 | /* Adjust a breakpoint's address to account for architectural |
6912 | constraints on breakpoint placement. Return the adjusted address. | |
6913 | Note: Very few targets require this kind of adjustment. For most | |
6914 | targets, this function is simply the identity function. */ | |
76897487 KB |
6915 | |
6916 | static CORE_ADDR | |
a6d9a66e UW |
6917 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6918 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6919 | { |
a0de8c21 YQ |
6920 | if (bptype == bp_watchpoint |
6921 | || bptype == bp_hardware_watchpoint | |
6922 | || bptype == bp_read_watchpoint | |
6923 | || bptype == bp_access_watchpoint | |
6924 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6925 | { |
6926 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6927 | have their addresses modified. */ | |
6928 | return bpaddr; | |
6929 | } | |
7c16b83e PA |
6930 | else if (bptype == bp_single_step) |
6931 | { | |
6932 | /* Single-step breakpoints should not have their addresses | |
6933 | modified. If there's any architectural constrain that | |
6934 | applies to this address, then it should have already been | |
6935 | taken into account when the breakpoint was created in the | |
6936 | first place. If we didn't do this, stepping through e.g., | |
6937 | Thumb-2 IT blocks would break. */ | |
6938 | return bpaddr; | |
6939 | } | |
76897487 KB |
6940 | else |
6941 | { | |
a0de8c21 YQ |
6942 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6943 | ||
6944 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6945 | { | |
6946 | /* Some targets have architectural constraints on the placement | |
6947 | of breakpoint instructions. Obtain the adjusted address. */ | |
6948 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6949 | } | |
76897487 | 6950 | |
a0de8c21 | 6951 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6952 | |
6953 | /* An adjusted breakpoint address can significantly alter | |
6954 | a user's expectations. Print a warning if an adjustment | |
6955 | is required. */ | |
6956 | if (adjusted_bpaddr != bpaddr) | |
6957 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6958 | ||
6959 | return adjusted_bpaddr; | |
6960 | } | |
6961 | } | |
6962 | ||
5625a286 | 6963 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 6964 | { |
5625a286 | 6965 | bp_location *loc = this; |
7cc221ef | 6966 | |
348d480f PA |
6967 | gdb_assert (ops != NULL); |
6968 | ||
28010a5d PA |
6969 | loc->ops = ops; |
6970 | loc->owner = owner; | |
b775012e | 6971 | loc->cond_bytecode = NULL; |
0d381245 VP |
6972 | loc->shlib_disabled = 0; |
6973 | loc->enabled = 1; | |
e049a4b5 | 6974 | |
28010a5d | 6975 | switch (owner->type) |
e049a4b5 DJ |
6976 | { |
6977 | case bp_breakpoint: | |
7c16b83e | 6978 | case bp_single_step: |
e049a4b5 DJ |
6979 | case bp_until: |
6980 | case bp_finish: | |
6981 | case bp_longjmp: | |
6982 | case bp_longjmp_resume: | |
e2e4d78b | 6983 | case bp_longjmp_call_dummy: |
186c406b TT |
6984 | case bp_exception: |
6985 | case bp_exception_resume: | |
e049a4b5 | 6986 | case bp_step_resume: |
2c03e5be | 6987 | case bp_hp_step_resume: |
e049a4b5 DJ |
6988 | case bp_watchpoint_scope: |
6989 | case bp_call_dummy: | |
aa7d318d | 6990 | case bp_std_terminate: |
e049a4b5 DJ |
6991 | case bp_shlib_event: |
6992 | case bp_thread_event: | |
6993 | case bp_overlay_event: | |
4efc6507 | 6994 | case bp_jit_event: |
0fd8e87f | 6995 | case bp_longjmp_master: |
aa7d318d | 6996 | case bp_std_terminate_master: |
186c406b | 6997 | case bp_exception_master: |
0e30163f JK |
6998 | case bp_gnu_ifunc_resolver: |
6999 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7000 | case bp_dprintf: |
e049a4b5 | 7001 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7002 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7003 | break; |
7004 | case bp_hardware_breakpoint: | |
7005 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7006 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7007 | break; |
7008 | case bp_hardware_watchpoint: | |
7009 | case bp_read_watchpoint: | |
7010 | case bp_access_watchpoint: | |
7011 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7012 | break; | |
7013 | case bp_watchpoint: | |
ce78b96d | 7014 | case bp_catchpoint: |
15c3d785 PA |
7015 | case bp_tracepoint: |
7016 | case bp_fast_tracepoint: | |
0fb4aa4b | 7017 | case bp_static_tracepoint: |
e049a4b5 DJ |
7018 | loc->loc_type = bp_loc_other; |
7019 | break; | |
7020 | default: | |
e2e0b3e5 | 7021 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7022 | } |
7023 | ||
f431efe5 | 7024 | loc->refc = 1; |
28010a5d PA |
7025 | } |
7026 | ||
7027 | /* Allocate a struct bp_location. */ | |
7028 | ||
7029 | static struct bp_location * | |
7030 | allocate_bp_location (struct breakpoint *bpt) | |
7031 | { | |
348d480f PA |
7032 | return bpt->ops->allocate_location (bpt); |
7033 | } | |
7cc221ef | 7034 | |
f431efe5 PA |
7035 | static void |
7036 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7037 | { |
348d480f | 7038 | loc->ops->dtor (loc); |
4d01a485 | 7039 | delete loc; |
fe3f5fa8 VP |
7040 | } |
7041 | ||
f431efe5 PA |
7042 | /* Increment reference count. */ |
7043 | ||
7044 | static void | |
7045 | incref_bp_location (struct bp_location *bl) | |
7046 | { | |
7047 | ++bl->refc; | |
7048 | } | |
7049 | ||
7050 | /* Decrement reference count. If the reference count reaches 0, | |
7051 | destroy the bp_location. Sets *BLP to NULL. */ | |
7052 | ||
7053 | static void | |
7054 | decref_bp_location (struct bp_location **blp) | |
7055 | { | |
0807b50c PA |
7056 | gdb_assert ((*blp)->refc > 0); |
7057 | ||
f431efe5 PA |
7058 | if (--(*blp)->refc == 0) |
7059 | free_bp_location (*blp); | |
7060 | *blp = NULL; | |
7061 | } | |
7062 | ||
346774a9 | 7063 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7064 | |
b270e6f9 TT |
7065 | static breakpoint * |
7066 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7067 | { |
346774a9 | 7068 | struct breakpoint *b1; |
b270e6f9 | 7069 | struct breakpoint *result = b.get (); |
c906108c | 7070 | |
346774a9 PA |
7071 | /* Add this breakpoint to the end of the chain so that a list of |
7072 | breakpoints will come out in order of increasing numbers. */ | |
7073 | ||
7074 | b1 = breakpoint_chain; | |
7075 | if (b1 == 0) | |
b270e6f9 | 7076 | breakpoint_chain = b.release (); |
346774a9 PA |
7077 | else |
7078 | { | |
7079 | while (b1->next) | |
7080 | b1 = b1->next; | |
b270e6f9 | 7081 | b1->next = b.release (); |
346774a9 | 7082 | } |
b270e6f9 TT |
7083 | |
7084 | return result; | |
346774a9 PA |
7085 | } |
7086 | ||
7087 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7088 | ||
7089 | static void | |
7090 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7091 | struct gdbarch *gdbarch, | |
28010a5d | 7092 | enum bptype bptype, |
c0a91b2b | 7093 | const struct breakpoint_ops *ops) |
346774a9 | 7094 | { |
348d480f PA |
7095 | gdb_assert (ops != NULL); |
7096 | ||
28010a5d | 7097 | b->ops = ops; |
4d28f7a8 | 7098 | b->type = bptype; |
a6d9a66e | 7099 | b->gdbarch = gdbarch; |
c906108c SS |
7100 | b->language = current_language->la_language; |
7101 | b->input_radix = input_radix; | |
d0fb5eae | 7102 | b->related_breakpoint = b; |
346774a9 PA |
7103 | } |
7104 | ||
7105 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7106 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7107 | |
7108 | static struct breakpoint * | |
7109 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7110 | enum bptype bptype, |
c0a91b2b | 7111 | const struct breakpoint_ops *ops) |
346774a9 | 7112 | { |
3b0871f4 | 7113 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7114 | |
3b0871f4 | 7115 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7116 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7117 | } |
7118 | ||
0e30163f JK |
7119 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7120 | resolutions should be made as the user specified the location explicitly | |
7121 | enough. */ | |
7122 | ||
0d381245 | 7123 | static void |
0e30163f | 7124 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7125 | { |
2bdf28a0 JK |
7126 | gdb_assert (loc->owner != NULL); |
7127 | ||
0d381245 | 7128 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7129 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7130 | || is_tracepoint (loc->owner)) |
0d381245 | 7131 | { |
2c02bd72 | 7132 | const char *function_name; |
0e30163f | 7133 | |
3467ec66 | 7134 | if (loc->msymbol != NULL |
f50776aa PA |
7135 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7136 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7137 | && !explicit_loc) |
0e30163f JK |
7138 | { |
7139 | struct breakpoint *b = loc->owner; | |
7140 | ||
3467ec66 PA |
7141 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7142 | ||
7143 | if (b->type == bp_breakpoint && b->loc == loc | |
7144 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7145 | { |
7146 | /* Create only the whole new breakpoint of this type but do not | |
7147 | mess more complicated breakpoints with multiple locations. */ | |
7148 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7149 | /* Remember the resolver's address for use by the return |
7150 | breakpoint. */ | |
3467ec66 | 7151 | loc->related_address = loc->address; |
0e30163f JK |
7152 | } |
7153 | } | |
3467ec66 PA |
7154 | else |
7155 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7156 | |
2c02bd72 DE |
7157 | if (function_name) |
7158 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7159 | } |
7160 | } | |
7161 | ||
a6d9a66e | 7162 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7163 | struct gdbarch * |
a6d9a66e UW |
7164 | get_sal_arch (struct symtab_and_line sal) |
7165 | { | |
7166 | if (sal.section) | |
7167 | return get_objfile_arch (sal.section->objfile); | |
7168 | if (sal.symtab) | |
eb822aa6 | 7169 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7170 | |
7171 | return NULL; | |
7172 | } | |
7173 | ||
346774a9 PA |
7174 | /* Low level routine for partially initializing a breakpoint of type |
7175 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7176 | file name, and line number are provided by SAL. |
0d381245 VP |
7177 | |
7178 | It is expected that the caller will complete the initialization of | |
7179 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7180 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7181 | |
346774a9 PA |
7182 | static void |
7183 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7184 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7185 | const struct breakpoint_ops *ops) |
0d381245 | 7186 | { |
28010a5d | 7187 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7188 | |
3742cc8b | 7189 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7190 | |
6c95b8df PA |
7191 | if (bptype != bp_catchpoint) |
7192 | gdb_assert (sal.pspace != NULL); | |
7193 | ||
f8eba3c6 TT |
7194 | /* Store the program space that was used to set the breakpoint, |
7195 | except for ordinary breakpoints, which are independent of the | |
7196 | program space. */ | |
7197 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7198 | b->pspace = sal.pspace; | |
346774a9 | 7199 | } |
c906108c | 7200 | |
346774a9 PA |
7201 | /* set_raw_breakpoint is a low level routine for allocating and |
7202 | partially initializing a breakpoint of type BPTYPE. The newly | |
7203 | created breakpoint's address, section, source file name, and line | |
7204 | number are provided by SAL. The newly created and partially | |
7205 | initialized breakpoint is added to the breakpoint chain and | |
7206 | is also returned as the value of this function. | |
7207 | ||
7208 | It is expected that the caller will complete the initialization of | |
7209 | the newly created breakpoint struct as well as output any status | |
7210 | information regarding the creation of a new breakpoint. In | |
7211 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7212 | number! Care should be taken to not allow an error to occur | |
7213 | prior to completing the initialization of the breakpoint. If this | |
7214 | should happen, a bogus breakpoint will be left on the chain. */ | |
7215 | ||
7216 | struct breakpoint * | |
7217 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7218 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7219 | const struct breakpoint_ops *ops) |
346774a9 | 7220 | { |
3b0871f4 | 7221 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7222 | |
3b0871f4 | 7223 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7224 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7225 | } |
7226 | ||
53a5351d | 7227 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7228 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7229 | initiated the operation. */ | |
c906108c SS |
7230 | |
7231 | void | |
186c406b | 7232 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7233 | { |
35df4500 | 7234 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7235 | int thread = tp->global_num; |
0fd8e87f UW |
7236 | |
7237 | /* To avoid having to rescan all objfile symbols at every step, | |
7238 | we maintain a list of continually-inserted but always disabled | |
7239 | longjmp "master" breakpoints. Here, we simply create momentary | |
7240 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7241 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7242 | if (b->pspace == current_program_space |
186c406b TT |
7243 | && (b->type == bp_longjmp_master |
7244 | || b->type == bp_exception_master)) | |
0fd8e87f | 7245 | { |
06edf0c0 PA |
7246 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7247 | struct breakpoint *clone; | |
cc59ec59 | 7248 | |
e2e4d78b JK |
7249 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7250 | after their removal. */ | |
06edf0c0 | 7251 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7252 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7253 | clone->thread = thread; |
7254 | } | |
186c406b TT |
7255 | |
7256 | tp->initiating_frame = frame; | |
c906108c SS |
7257 | } |
7258 | ||
611c83ae | 7259 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7260 | void |
611c83ae | 7261 | delete_longjmp_breakpoint (int thread) |
c906108c | 7262 | { |
35df4500 | 7263 | struct breakpoint *b, *b_tmp; |
c906108c | 7264 | |
35df4500 | 7265 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7266 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7267 | { |
7268 | if (b->thread == thread) | |
7269 | delete_breakpoint (b); | |
7270 | } | |
c906108c SS |
7271 | } |
7272 | ||
f59f708a PA |
7273 | void |
7274 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7275 | { | |
7276 | struct breakpoint *b, *b_tmp; | |
7277 | ||
7278 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7279 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7280 | { | |
7281 | if (b->thread == thread) | |
7282 | b->disposition = disp_del_at_next_stop; | |
7283 | } | |
7284 | } | |
7285 | ||
e2e4d78b JK |
7286 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7287 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7288 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7289 | breakpoints. */ | |
7290 | ||
7291 | struct breakpoint * | |
7292 | set_longjmp_breakpoint_for_call_dummy (void) | |
7293 | { | |
7294 | struct breakpoint *b, *retval = NULL; | |
7295 | ||
7296 | ALL_BREAKPOINTS (b) | |
7297 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7298 | { | |
7299 | struct breakpoint *new_b; | |
7300 | ||
7301 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7302 | &momentary_breakpoint_ops, |
7303 | 1); | |
00431a78 | 7304 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7305 | |
7306 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7307 | ||
7308 | gdb_assert (new_b->related_breakpoint == new_b); | |
7309 | if (retval == NULL) | |
7310 | retval = new_b; | |
7311 | new_b->related_breakpoint = retval; | |
7312 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7313 | retval = retval->related_breakpoint; | |
7314 | retval->related_breakpoint = new_b; | |
7315 | } | |
7316 | ||
7317 | return retval; | |
7318 | } | |
7319 | ||
7320 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7321 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7322 | stack. |
7323 | ||
7324 | You should call this function only at places where it is safe to currently | |
7325 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7326 | frames. */ | |
7327 | ||
7328 | void | |
b67a2c6f | 7329 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7330 | { |
7331 | struct breakpoint *b, *b_tmp; | |
7332 | ||
7333 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7334 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7335 | { |
7336 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7337 | ||
7338 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7339 | dummy_b = dummy_b->related_breakpoint; | |
7340 | if (dummy_b->type != bp_call_dummy | |
7341 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7342 | continue; | |
7343 | ||
00431a78 | 7344 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7345 | |
7346 | while (b->related_breakpoint != b) | |
7347 | { | |
7348 | if (b_tmp == b->related_breakpoint) | |
7349 | b_tmp = b->related_breakpoint->next; | |
7350 | delete_breakpoint (b->related_breakpoint); | |
7351 | } | |
7352 | delete_breakpoint (b); | |
7353 | } | |
7354 | } | |
7355 | ||
1900040c MS |
7356 | void |
7357 | enable_overlay_breakpoints (void) | |
7358 | { | |
52f0bd74 | 7359 | struct breakpoint *b; |
1900040c MS |
7360 | |
7361 | ALL_BREAKPOINTS (b) | |
7362 | if (b->type == bp_overlay_event) | |
7363 | { | |
7364 | b->enable_state = bp_enabled; | |
44702360 | 7365 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7366 | overlay_events_enabled = 1; |
1900040c MS |
7367 | } |
7368 | } | |
7369 | ||
7370 | void | |
7371 | disable_overlay_breakpoints (void) | |
7372 | { | |
52f0bd74 | 7373 | struct breakpoint *b; |
1900040c MS |
7374 | |
7375 | ALL_BREAKPOINTS (b) | |
7376 | if (b->type == bp_overlay_event) | |
7377 | { | |
7378 | b->enable_state = bp_disabled; | |
44702360 | 7379 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7380 | overlay_events_enabled = 0; |
1900040c MS |
7381 | } |
7382 | } | |
7383 | ||
aa7d318d TT |
7384 | /* Set an active std::terminate breakpoint for each std::terminate |
7385 | master breakpoint. */ | |
7386 | void | |
7387 | set_std_terminate_breakpoint (void) | |
7388 | { | |
35df4500 | 7389 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7390 | |
35df4500 | 7391 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7392 | if (b->pspace == current_program_space |
7393 | && b->type == bp_std_terminate_master) | |
7394 | { | |
06edf0c0 | 7395 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7396 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7397 | } |
7398 | } | |
7399 | ||
7400 | /* Delete all the std::terminate breakpoints. */ | |
7401 | void | |
7402 | delete_std_terminate_breakpoint (void) | |
7403 | { | |
35df4500 | 7404 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7405 | |
35df4500 | 7406 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7407 | if (b->type == bp_std_terminate) |
7408 | delete_breakpoint (b); | |
7409 | } | |
7410 | ||
c4093a6a | 7411 | struct breakpoint * |
a6d9a66e | 7412 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7413 | { |
7414 | struct breakpoint *b; | |
c4093a6a | 7415 | |
06edf0c0 PA |
7416 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7417 | &internal_breakpoint_ops); | |
7418 | ||
b5de0fa7 | 7419 | b->enable_state = bp_enabled; |
f00aae0f | 7420 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7421 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7422 | |
44702360 | 7423 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7424 | |
c4093a6a JM |
7425 | return b; |
7426 | } | |
7427 | ||
0101ce28 JJ |
7428 | struct lang_and_radix |
7429 | { | |
7430 | enum language lang; | |
7431 | int radix; | |
7432 | }; | |
7433 | ||
4efc6507 DE |
7434 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7435 | ||
7436 | struct breakpoint * | |
7437 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7438 | { | |
2a7f3dff PA |
7439 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7440 | &internal_breakpoint_ops); | |
4efc6507 | 7441 | } |
0101ce28 | 7442 | |
03673fc7 PP |
7443 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7444 | ||
7445 | void | |
7446 | remove_jit_event_breakpoints (void) | |
7447 | { | |
7448 | struct breakpoint *b, *b_tmp; | |
7449 | ||
7450 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7451 | if (b->type == bp_jit_event | |
7452 | && b->loc->pspace == current_program_space) | |
7453 | delete_breakpoint (b); | |
7454 | } | |
7455 | ||
cae688ec JJ |
7456 | void |
7457 | remove_solib_event_breakpoints (void) | |
7458 | { | |
35df4500 | 7459 | struct breakpoint *b, *b_tmp; |
cae688ec | 7460 | |
35df4500 | 7461 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7462 | if (b->type == bp_shlib_event |
7463 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7464 | delete_breakpoint (b); |
7465 | } | |
7466 | ||
f37f681c PA |
7467 | /* See breakpoint.h. */ |
7468 | ||
7469 | void | |
7470 | remove_solib_event_breakpoints_at_next_stop (void) | |
7471 | { | |
7472 | struct breakpoint *b, *b_tmp; | |
7473 | ||
7474 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7475 | if (b->type == bp_shlib_event | |
7476 | && b->loc->pspace == current_program_space) | |
7477 | b->disposition = disp_del_at_next_stop; | |
7478 | } | |
7479 | ||
04086b45 PA |
7480 | /* Helper for create_solib_event_breakpoint / |
7481 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7482 | INSERT_MODE to pass through to update_global_location_list. */ | |
7483 | ||
7484 | static struct breakpoint * | |
7485 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7486 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7487 | { |
7488 | struct breakpoint *b; | |
7489 | ||
06edf0c0 PA |
7490 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7491 | &internal_breakpoint_ops); | |
04086b45 | 7492 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7493 | return b; |
7494 | } | |
7495 | ||
04086b45 PA |
7496 | struct breakpoint * |
7497 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7498 | { | |
7499 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7500 | } | |
7501 | ||
f37f681c PA |
7502 | /* See breakpoint.h. */ |
7503 | ||
7504 | struct breakpoint * | |
7505 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7506 | { | |
7507 | struct breakpoint *b; | |
7508 | ||
04086b45 PA |
7509 | /* Explicitly tell update_global_location_list to insert |
7510 | locations. */ | |
7511 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7512 | if (!b->loc->inserted) |
7513 | { | |
7514 | delete_breakpoint (b); | |
7515 | return NULL; | |
7516 | } | |
7517 | return b; | |
7518 | } | |
7519 | ||
cae688ec JJ |
7520 | /* Disable any breakpoints that are on code in shared libraries. Only |
7521 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7522 | ||
7523 | void | |
cb851954 | 7524 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7525 | { |
876fa593 | 7526 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7527 | |
876fa593 | 7528 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7529 | { |
2bdf28a0 | 7530 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7531 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7532 | |
4a64f543 MS |
7533 | /* We apply the check to all breakpoints, including disabled for |
7534 | those with loc->duplicate set. This is so that when breakpoint | |
7535 | becomes enabled, or the duplicate is removed, gdb will try to | |
7536 | insert all breakpoints. If we don't set shlib_disabled here, | |
7537 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7538 | if (((b->type == bp_breakpoint) |
508ccb1f | 7539 | || (b->type == bp_jit_event) |
1042e4c0 | 7540 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7541 | || (is_tracepoint (b))) |
6c95b8df | 7542 | && loc->pspace == current_program_space |
0d381245 | 7543 | && !loc->shlib_disabled |
6c95b8df | 7544 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7545 | ) |
0d381245 VP |
7546 | { |
7547 | loc->shlib_disabled = 1; | |
7548 | } | |
cae688ec JJ |
7549 | } |
7550 | } | |
7551 | ||
63644780 NB |
7552 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7553 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7554 | disabled ones can just stay disabled. */ | |
84acb35a | 7555 | |
75149521 | 7556 | static void |
84acb35a JJ |
7557 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7558 | { | |
876fa593 | 7559 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7560 | int disabled_shlib_breaks = 0; |
7561 | ||
876fa593 | 7562 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7563 | { |
2bdf28a0 | 7564 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7565 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7566 | |
1e4d1764 | 7567 | if (solib->pspace == loc->pspace |
e2dd7057 | 7568 | && !loc->shlib_disabled |
1e4d1764 YQ |
7569 | && (((b->type == bp_breakpoint |
7570 | || b->type == bp_jit_event | |
7571 | || b->type == bp_hardware_breakpoint) | |
7572 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7573 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7574 | || is_tracepoint (b)) | |
e2dd7057 | 7575 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7576 | { |
e2dd7057 PP |
7577 | loc->shlib_disabled = 1; |
7578 | /* At this point, we cannot rely on remove_breakpoint | |
7579 | succeeding so we must mark the breakpoint as not inserted | |
7580 | to prevent future errors occurring in remove_breakpoints. */ | |
7581 | loc->inserted = 0; | |
8d3788bd VP |
7582 | |
7583 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7584 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7585 | |
e2dd7057 PP |
7586 | if (!disabled_shlib_breaks) |
7587 | { | |
223ffa71 | 7588 | target_terminal::ours_for_output (); |
3e43a32a MS |
7589 | warning (_("Temporarily disabling breakpoints " |
7590 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7591 | solib->so_name); |
84acb35a | 7592 | } |
e2dd7057 | 7593 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7594 | } |
7595 | } | |
84acb35a JJ |
7596 | } |
7597 | ||
63644780 NB |
7598 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7599 | notification of free_objfile. Only apply to enabled breakpoints, | |
7600 | disabled ones can just stay disabled. */ | |
7601 | ||
7602 | static void | |
7603 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7604 | { | |
7605 | struct breakpoint *b; | |
7606 | ||
7607 | if (objfile == NULL) | |
7608 | return; | |
7609 | ||
d03de421 PA |
7610 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7611 | managed by the user with add-symbol-file/remove-symbol-file. | |
7612 | Similarly to how breakpoints in shared libraries are handled in | |
7613 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7614 | shlib_disabled so they end up uninserted on the next global |
7615 | location list update. Shared libraries not loaded by the user | |
7616 | aren't handled here -- they're already handled in | |
7617 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7618 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7619 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7620 | main objfile). */ | |
7621 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7622 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7623 | return; |
7624 | ||
7625 | ALL_BREAKPOINTS (b) | |
7626 | { | |
7627 | struct bp_location *loc; | |
7628 | int bp_modified = 0; | |
7629 | ||
7630 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7631 | continue; | |
7632 | ||
7633 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7634 | { | |
7635 | CORE_ADDR loc_addr = loc->address; | |
7636 | ||
7637 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7638 | && loc->loc_type != bp_loc_software_breakpoint) | |
7639 | continue; | |
7640 | ||
7641 | if (loc->shlib_disabled != 0) | |
7642 | continue; | |
7643 | ||
7644 | if (objfile->pspace != loc->pspace) | |
7645 | continue; | |
7646 | ||
7647 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7648 | && loc->loc_type != bp_loc_software_breakpoint) | |
7649 | continue; | |
7650 | ||
7651 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7652 | { | |
7653 | loc->shlib_disabled = 1; | |
08351840 PA |
7654 | /* At this point, we don't know whether the object was |
7655 | unmapped from the inferior or not, so leave the | |
7656 | inserted flag alone. We'll handle failure to | |
7657 | uninsert quietly, in case the object was indeed | |
7658 | unmapped. */ | |
63644780 NB |
7659 | |
7660 | mark_breakpoint_location_modified (loc); | |
7661 | ||
7662 | bp_modified = 1; | |
7663 | } | |
7664 | } | |
7665 | ||
7666 | if (bp_modified) | |
76727919 | 7667 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7668 | } |
7669 | } | |
7670 | ||
ce78b96d JB |
7671 | /* FORK & VFORK catchpoints. */ |
7672 | ||
e29a4733 | 7673 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7674 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7675 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7676 | |
c1fc2657 | 7677 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7678 | { |
e29a4733 PA |
7679 | /* Process id of a child process whose forking triggered this |
7680 | catchpoint. This field is only valid immediately after this | |
7681 | catchpoint has triggered. */ | |
7682 | ptid_t forked_inferior_pid; | |
7683 | }; | |
7684 | ||
4a64f543 MS |
7685 | /* Implement the "insert" breakpoint_ops method for fork |
7686 | catchpoints. */ | |
ce78b96d | 7687 | |
77b06cd7 TJB |
7688 | static int |
7689 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7690 | { |
e99b03dc | 7691 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7692 | } |
7693 | ||
4a64f543 MS |
7694 | /* Implement the "remove" breakpoint_ops method for fork |
7695 | catchpoints. */ | |
ce78b96d JB |
7696 | |
7697 | static int | |
73971819 | 7698 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7699 | { |
e99b03dc | 7700 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7701 | } |
7702 | ||
7703 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7704 | catchpoints. */ | |
7705 | ||
7706 | static int | |
f1310107 | 7707 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7708 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7709 | const struct target_waitstatus *ws) |
ce78b96d | 7710 | { |
e29a4733 PA |
7711 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7712 | ||
f90263c1 TT |
7713 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7714 | return 0; | |
7715 | ||
7716 | c->forked_inferior_pid = ws->value.related_pid; | |
7717 | return 1; | |
ce78b96d JB |
7718 | } |
7719 | ||
4a64f543 MS |
7720 | /* Implement the "print_it" breakpoint_ops method for fork |
7721 | catchpoints. */ | |
ce78b96d JB |
7722 | |
7723 | static enum print_stop_action | |
348d480f | 7724 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7725 | { |
36dfb11c | 7726 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7727 | struct breakpoint *b = bs->breakpoint_at; |
7728 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7729 | |
ce78b96d | 7730 | annotate_catchpoint (b->number); |
f303dbd6 | 7731 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7732 | if (b->disposition == disp_del) |
112e8700 | 7733 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7734 | else |
112e8700 SM |
7735 | uiout->text ("Catchpoint "); |
7736 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7737 | { |
112e8700 SM |
7738 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7739 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7740 | } |
112e8700 SM |
7741 | uiout->field_int ("bkptno", b->number); |
7742 | uiout->text (" (forked process "); | |
e99b03dc | 7743 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7744 | uiout->text ("), "); |
ce78b96d JB |
7745 | return PRINT_SRC_AND_LOC; |
7746 | } | |
7747 | ||
4a64f543 MS |
7748 | /* Implement the "print_one" breakpoint_ops method for fork |
7749 | catchpoints. */ | |
ce78b96d JB |
7750 | |
7751 | static void | |
a6d9a66e | 7752 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7753 | { |
e29a4733 | 7754 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7755 | struct value_print_options opts; |
79a45e25 | 7756 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7757 | |
7758 | get_user_print_options (&opts); | |
7759 | ||
4a64f543 MS |
7760 | /* Field 4, the address, is omitted (which makes the columns not |
7761 | line up too nicely with the headers, but the effect is relatively | |
7762 | readable). */ | |
79a45b7d | 7763 | if (opts.addressprint) |
112e8700 | 7764 | uiout->field_skip ("addr"); |
ce78b96d | 7765 | annotate_field (5); |
112e8700 | 7766 | uiout->text ("fork"); |
d7e15655 | 7767 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7768 | { |
112e8700 | 7769 | uiout->text (", process "); |
e99b03dc | 7770 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7771 | uiout->spaces (1); |
ce78b96d | 7772 | } |
8ac3646f | 7773 | |
112e8700 SM |
7774 | if (uiout->is_mi_like_p ()) |
7775 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7776 | } |
7777 | ||
7778 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7779 | catchpoints. */ | |
7780 | ||
7781 | static void | |
7782 | print_mention_catch_fork (struct breakpoint *b) | |
7783 | { | |
7784 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7785 | } | |
7786 | ||
6149aea9 PA |
7787 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7788 | catchpoints. */ | |
7789 | ||
7790 | static void | |
7791 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7792 | { | |
7793 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7794 | print_recreate_thread (b, fp); |
6149aea9 PA |
7795 | } |
7796 | ||
ce78b96d JB |
7797 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7798 | ||
2060206e | 7799 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7800 | |
4a64f543 MS |
7801 | /* Implement the "insert" breakpoint_ops method for vfork |
7802 | catchpoints. */ | |
ce78b96d | 7803 | |
77b06cd7 TJB |
7804 | static int |
7805 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7806 | { |
e99b03dc | 7807 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7808 | } |
7809 | ||
4a64f543 MS |
7810 | /* Implement the "remove" breakpoint_ops method for vfork |
7811 | catchpoints. */ | |
ce78b96d JB |
7812 | |
7813 | static int | |
73971819 | 7814 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7815 | { |
e99b03dc | 7816 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7817 | } |
7818 | ||
7819 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7820 | catchpoints. */ | |
7821 | ||
7822 | static int | |
f1310107 | 7823 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7824 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7825 | const struct target_waitstatus *ws) |
ce78b96d | 7826 | { |
e29a4733 PA |
7827 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7828 | ||
f90263c1 TT |
7829 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7830 | return 0; | |
7831 | ||
7832 | c->forked_inferior_pid = ws->value.related_pid; | |
7833 | return 1; | |
ce78b96d JB |
7834 | } |
7835 | ||
4a64f543 MS |
7836 | /* Implement the "print_it" breakpoint_ops method for vfork |
7837 | catchpoints. */ | |
ce78b96d JB |
7838 | |
7839 | static enum print_stop_action | |
348d480f | 7840 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7841 | { |
36dfb11c | 7842 | struct ui_out *uiout = current_uiout; |
348d480f | 7843 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7844 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7845 | ||
ce78b96d | 7846 | annotate_catchpoint (b->number); |
f303dbd6 | 7847 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7848 | if (b->disposition == disp_del) |
112e8700 | 7849 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7850 | else |
112e8700 SM |
7851 | uiout->text ("Catchpoint "); |
7852 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7853 | { |
112e8700 SM |
7854 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7855 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7856 | } |
112e8700 SM |
7857 | uiout->field_int ("bkptno", b->number); |
7858 | uiout->text (" (vforked process "); | |
e99b03dc | 7859 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7860 | uiout->text ("), "); |
ce78b96d JB |
7861 | return PRINT_SRC_AND_LOC; |
7862 | } | |
7863 | ||
4a64f543 MS |
7864 | /* Implement the "print_one" breakpoint_ops method for vfork |
7865 | catchpoints. */ | |
ce78b96d JB |
7866 | |
7867 | static void | |
a6d9a66e | 7868 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7869 | { |
e29a4733 | 7870 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7871 | struct value_print_options opts; |
79a45e25 | 7872 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7873 | |
7874 | get_user_print_options (&opts); | |
4a64f543 MS |
7875 | /* Field 4, the address, is omitted (which makes the columns not |
7876 | line up too nicely with the headers, but the effect is relatively | |
7877 | readable). */ | |
79a45b7d | 7878 | if (opts.addressprint) |
112e8700 | 7879 | uiout->field_skip ("addr"); |
ce78b96d | 7880 | annotate_field (5); |
112e8700 | 7881 | uiout->text ("vfork"); |
d7e15655 | 7882 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7883 | { |
112e8700 | 7884 | uiout->text (", process "); |
e99b03dc | 7885 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7886 | uiout->spaces (1); |
ce78b96d | 7887 | } |
8ac3646f | 7888 | |
112e8700 SM |
7889 | if (uiout->is_mi_like_p ()) |
7890 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7891 | } |
7892 | ||
7893 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7894 | catchpoints. */ | |
7895 | ||
7896 | static void | |
7897 | print_mention_catch_vfork (struct breakpoint *b) | |
7898 | { | |
7899 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7900 | } | |
7901 | ||
6149aea9 PA |
7902 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7903 | catchpoints. */ | |
7904 | ||
7905 | static void | |
7906 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7907 | { | |
7908 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7909 | print_recreate_thread (b, fp); |
6149aea9 PA |
7910 | } |
7911 | ||
ce78b96d JB |
7912 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7913 | ||
2060206e | 7914 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7915 | |
edcc5120 | 7916 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7917 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7918 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7919 | ||
c1fc2657 | 7920 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7921 | { |
c1fc2657 | 7922 | ~solib_catchpoint () override; |
edcc5120 TT |
7923 | |
7924 | /* True for "catch load", false for "catch unload". */ | |
7925 | unsigned char is_load; | |
7926 | ||
7927 | /* Regular expression to match, if any. COMPILED is only valid when | |
7928 | REGEX is non-NULL. */ | |
7929 | char *regex; | |
2d7cc5c7 | 7930 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7931 | }; |
7932 | ||
c1fc2657 | 7933 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7934 | { |
c1fc2657 | 7935 | xfree (this->regex); |
edcc5120 TT |
7936 | } |
7937 | ||
7938 | static int | |
7939 | insert_catch_solib (struct bp_location *ignore) | |
7940 | { | |
7941 | return 0; | |
7942 | } | |
7943 | ||
7944 | static int | |
73971819 | 7945 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7946 | { |
7947 | return 0; | |
7948 | } | |
7949 | ||
7950 | static int | |
7951 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7952 | const address_space *aspace, |
edcc5120 TT |
7953 | CORE_ADDR bp_addr, |
7954 | const struct target_waitstatus *ws) | |
7955 | { | |
7956 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7957 | struct breakpoint *other; | |
7958 | ||
7959 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7960 | return 1; | |
7961 | ||
7962 | ALL_BREAKPOINTS (other) | |
7963 | { | |
7964 | struct bp_location *other_bl; | |
7965 | ||
7966 | if (other == bl->owner) | |
7967 | continue; | |
7968 | ||
7969 | if (other->type != bp_shlib_event) | |
7970 | continue; | |
7971 | ||
c1fc2657 | 7972 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7973 | continue; |
7974 | ||
7975 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7976 | { | |
7977 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7978 | return 1; | |
7979 | } | |
7980 | } | |
7981 | ||
7982 | return 0; | |
7983 | } | |
7984 | ||
7985 | static void | |
7986 | check_status_catch_solib (struct bpstats *bs) | |
7987 | { | |
7988 | struct solib_catchpoint *self | |
7989 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7990 | |
7991 | if (self->is_load) | |
7992 | { | |
52941706 | 7993 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7994 | { |
7995 | if (!self->regex | |
2d7cc5c7 | 7996 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7997 | return; |
7998 | } | |
7999 | } | |
8000 | else | |
8001 | { | |
6fb16ce6 | 8002 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8003 | { |
8004 | if (!self->regex | |
6fb16ce6 | 8005 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8006 | return; |
8007 | } | |
8008 | } | |
8009 | ||
8010 | bs->stop = 0; | |
8011 | bs->print_it = print_it_noop; | |
8012 | } | |
8013 | ||
8014 | static enum print_stop_action | |
8015 | print_it_catch_solib (bpstat bs) | |
8016 | { | |
8017 | struct breakpoint *b = bs->breakpoint_at; | |
8018 | struct ui_out *uiout = current_uiout; | |
8019 | ||
8020 | annotate_catchpoint (b->number); | |
f303dbd6 | 8021 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8022 | if (b->disposition == disp_del) |
112e8700 | 8023 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8024 | else |
112e8700 SM |
8025 | uiout->text ("Catchpoint "); |
8026 | uiout->field_int ("bkptno", b->number); | |
8027 | uiout->text ("\n"); | |
8028 | if (uiout->is_mi_like_p ()) | |
8029 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8030 | print_solib_event (1); |
8031 | return PRINT_SRC_AND_LOC; | |
8032 | } | |
8033 | ||
8034 | static void | |
8035 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8036 | { | |
8037 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8038 | struct value_print_options opts; | |
8039 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8040 | |
8041 | get_user_print_options (&opts); | |
8042 | /* Field 4, the address, is omitted (which makes the columns not | |
8043 | line up too nicely with the headers, but the effect is relatively | |
8044 | readable). */ | |
8045 | if (opts.addressprint) | |
8046 | { | |
8047 | annotate_field (4); | |
112e8700 | 8048 | uiout->field_skip ("addr"); |
edcc5120 TT |
8049 | } |
8050 | ||
528e1572 | 8051 | std::string msg; |
edcc5120 TT |
8052 | annotate_field (5); |
8053 | if (self->is_load) | |
8054 | { | |
8055 | if (self->regex) | |
528e1572 | 8056 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8057 | else |
528e1572 | 8058 | msg = _("load of library"); |
edcc5120 TT |
8059 | } |
8060 | else | |
8061 | { | |
8062 | if (self->regex) | |
528e1572 | 8063 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8064 | else |
528e1572 | 8065 | msg = _("unload of library"); |
edcc5120 | 8066 | } |
112e8700 | 8067 | uiout->field_string ("what", msg); |
8ac3646f | 8068 | |
112e8700 SM |
8069 | if (uiout->is_mi_like_p ()) |
8070 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8071 | } |
8072 | ||
8073 | static void | |
8074 | print_mention_catch_solib (struct breakpoint *b) | |
8075 | { | |
8076 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8077 | ||
8078 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8079 | self->is_load ? "load" : "unload"); | |
8080 | } | |
8081 | ||
8082 | static void | |
8083 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8084 | { | |
8085 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8086 | ||
8087 | fprintf_unfiltered (fp, "%s %s", | |
8088 | b->disposition == disp_del ? "tcatch" : "catch", | |
8089 | self->is_load ? "load" : "unload"); | |
8090 | if (self->regex) | |
8091 | fprintf_unfiltered (fp, " %s", self->regex); | |
8092 | fprintf_unfiltered (fp, "\n"); | |
8093 | } | |
8094 | ||
8095 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8096 | ||
91985142 MG |
8097 | /* Shared helper function (MI and CLI) for creating and installing |
8098 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8099 | the events to be caught are load events, otherwise they are | |
8100 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8101 | temporary one. If ENABLED is non-zero the catchpoint is | |
8102 | created in an enabled state. */ | |
edcc5120 | 8103 | |
91985142 | 8104 | void |
a121b7c1 | 8105 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8106 | { |
edcc5120 | 8107 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8108 | |
edcc5120 TT |
8109 | if (!arg) |
8110 | arg = ""; | |
f1735a53 | 8111 | arg = skip_spaces (arg); |
edcc5120 | 8112 | |
36bd8eaa | 8113 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8114 | |
8115 | if (*arg != '\0') | |
8116 | { | |
2d7cc5c7 PA |
8117 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8118 | _("Invalid regexp"))); | |
edcc5120 TT |
8119 | c->regex = xstrdup (arg); |
8120 | } | |
8121 | ||
8122 | c->is_load = is_load; | |
36bd8eaa | 8123 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8124 | &catch_solib_breakpoint_ops); |
8125 | ||
c1fc2657 | 8126 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8127 | |
b270e6f9 | 8128 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8129 | } |
8130 | ||
91985142 MG |
8131 | /* A helper function that does all the work for "catch load" and |
8132 | "catch unload". */ | |
8133 | ||
8134 | static void | |
eb4c3f4a | 8135 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8136 | struct cmd_list_element *command) |
8137 | { | |
8138 | int tempflag; | |
8139 | const int enabled = 1; | |
8140 | ||
8141 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8142 | ||
8143 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8144 | } | |
8145 | ||
edcc5120 | 8146 | static void |
eb4c3f4a | 8147 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8148 | struct cmd_list_element *command) |
8149 | { | |
8150 | catch_load_or_unload (arg, from_tty, 1, command); | |
8151 | } | |
8152 | ||
8153 | static void | |
eb4c3f4a | 8154 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8155 | struct cmd_list_element *command) |
8156 | { | |
8157 | catch_load_or_unload (arg, from_tty, 0, command); | |
8158 | } | |
8159 | ||
346774a9 PA |
8160 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8161 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8162 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8163 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8164 | |
ab04a2af | 8165 | void |
346774a9 PA |
8166 | init_catchpoint (struct breakpoint *b, |
8167 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8168 | const char *cond_string, |
c0a91b2b | 8169 | const struct breakpoint_ops *ops) |
c906108c | 8170 | { |
51abb421 | 8171 | symtab_and_line sal; |
6c95b8df | 8172 | sal.pspace = current_program_space; |
c5aa993b | 8173 | |
28010a5d | 8174 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8175 | |
1b36a34b | 8176 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8177 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8178 | } |
8179 | ||
28010a5d | 8180 | void |
b270e6f9 | 8181 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8182 | { |
b270e6f9 | 8183 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8184 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8185 | if (is_tracepoint (b)) |
8186 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8187 | if (!internal) |
8188 | mention (b); | |
76727919 | 8189 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8190 | |
8191 | if (update_gll) | |
44702360 | 8192 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8193 | } |
8194 | ||
9b70b993 | 8195 | static void |
a6d9a66e | 8196 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8197 | int tempflag, const char *cond_string, |
c0a91b2b | 8198 | const struct breakpoint_ops *ops) |
c906108c | 8199 | { |
b270e6f9 | 8200 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8201 | |
b270e6f9 | 8202 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8203 | |
8204 | c->forked_inferior_pid = null_ptid; | |
8205 | ||
b270e6f9 | 8206 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8207 | } |
8208 | ||
fe798b75 JB |
8209 | /* Exec catchpoints. */ |
8210 | ||
b4d90040 | 8211 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8212 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8213 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8214 | ||
c1fc2657 | 8215 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8216 | { |
c1fc2657 | 8217 | ~exec_catchpoint () override; |
b4d90040 PA |
8218 | |
8219 | /* Filename of a program whose exec triggered this catchpoint. | |
8220 | This field is only valid immediately after this catchpoint has | |
8221 | triggered. */ | |
8222 | char *exec_pathname; | |
8223 | }; | |
8224 | ||
c1fc2657 | 8225 | /* Exec catchpoint destructor. */ |
b4d90040 | 8226 | |
c1fc2657 | 8227 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8228 | { |
c1fc2657 | 8229 | xfree (this->exec_pathname); |
b4d90040 PA |
8230 | } |
8231 | ||
77b06cd7 TJB |
8232 | static int |
8233 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8234 | { |
e99b03dc | 8235 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8236 | } |
c906108c | 8237 | |
fe798b75 | 8238 | static int |
73971819 | 8239 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8240 | { |
e99b03dc | 8241 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8242 | } |
c906108c | 8243 | |
fe798b75 | 8244 | static int |
f1310107 | 8245 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8246 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8247 | const struct target_waitstatus *ws) |
fe798b75 | 8248 | { |
b4d90040 PA |
8249 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8250 | ||
f90263c1 TT |
8251 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8252 | return 0; | |
8253 | ||
8254 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8255 | return 1; | |
fe798b75 | 8256 | } |
c906108c | 8257 | |
fe798b75 | 8258 | static enum print_stop_action |
348d480f | 8259 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8260 | { |
36dfb11c | 8261 | struct ui_out *uiout = current_uiout; |
348d480f | 8262 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8263 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8264 | ||
fe798b75 | 8265 | annotate_catchpoint (b->number); |
f303dbd6 | 8266 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8267 | if (b->disposition == disp_del) |
112e8700 | 8268 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8269 | else |
112e8700 SM |
8270 | uiout->text ("Catchpoint "); |
8271 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8272 | { |
112e8700 SM |
8273 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8274 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8275 | } |
112e8700 SM |
8276 | uiout->field_int ("bkptno", b->number); |
8277 | uiout->text (" (exec'd "); | |
8278 | uiout->field_string ("new-exec", c->exec_pathname); | |
8279 | uiout->text ("), "); | |
36dfb11c | 8280 | |
fe798b75 | 8281 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8282 | } |
8283 | ||
fe798b75 | 8284 | static void |
a6d9a66e | 8285 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8286 | { |
b4d90040 | 8287 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8288 | struct value_print_options opts; |
79a45e25 | 8289 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8290 | |
8291 | get_user_print_options (&opts); | |
8292 | ||
8293 | /* Field 4, the address, is omitted (which makes the columns | |
8294 | not line up too nicely with the headers, but the effect | |
8295 | is relatively readable). */ | |
8296 | if (opts.addressprint) | |
112e8700 | 8297 | uiout->field_skip ("addr"); |
fe798b75 | 8298 | annotate_field (5); |
112e8700 | 8299 | uiout->text ("exec"); |
b4d90040 | 8300 | if (c->exec_pathname != NULL) |
fe798b75 | 8301 | { |
112e8700 SM |
8302 | uiout->text (", program \""); |
8303 | uiout->field_string ("what", c->exec_pathname); | |
8304 | uiout->text ("\" "); | |
fe798b75 | 8305 | } |
8ac3646f | 8306 | |
112e8700 SM |
8307 | if (uiout->is_mi_like_p ()) |
8308 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8309 | } |
8310 | ||
8311 | static void | |
8312 | print_mention_catch_exec (struct breakpoint *b) | |
8313 | { | |
8314 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8315 | } | |
8316 | ||
6149aea9 PA |
8317 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8318 | catchpoints. */ | |
8319 | ||
8320 | static void | |
8321 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8322 | { | |
8323 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8324 | print_recreate_thread (b, fp); |
6149aea9 PA |
8325 | } |
8326 | ||
2060206e | 8327 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8328 | |
c906108c | 8329 | static int |
fba45db2 | 8330 | hw_breakpoint_used_count (void) |
c906108c | 8331 | { |
c906108c | 8332 | int i = 0; |
f1310107 TJB |
8333 | struct breakpoint *b; |
8334 | struct bp_location *bl; | |
c906108c SS |
8335 | |
8336 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8337 | { |
d6b74ac4 | 8338 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8339 | for (bl = b->loc; bl; bl = bl->next) |
8340 | { | |
8341 | /* Special types of hardware breakpoints may use more than | |
8342 | one register. */ | |
348d480f | 8343 | i += b->ops->resources_needed (bl); |
f1310107 | 8344 | } |
c5aa993b | 8345 | } |
c906108c SS |
8346 | |
8347 | return i; | |
8348 | } | |
8349 | ||
a1398e0c PA |
8350 | /* Returns the resources B would use if it were a hardware |
8351 | watchpoint. */ | |
8352 | ||
c906108c | 8353 | static int |
a1398e0c | 8354 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8355 | { |
c906108c | 8356 | int i = 0; |
e09342b5 | 8357 | struct bp_location *bl; |
c906108c | 8358 | |
a1398e0c PA |
8359 | if (!breakpoint_enabled (b)) |
8360 | return 0; | |
8361 | ||
8362 | for (bl = b->loc; bl; bl = bl->next) | |
8363 | { | |
8364 | /* Special types of hardware watchpoints may use more than | |
8365 | one register. */ | |
8366 | i += b->ops->resources_needed (bl); | |
8367 | } | |
8368 | ||
8369 | return i; | |
8370 | } | |
8371 | ||
8372 | /* Returns the sum the used resources of all hardware watchpoints of | |
8373 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8374 | the sum of the used resources of all hardware watchpoints of other | |
8375 | types _not_ TYPE. */ | |
8376 | ||
8377 | static int | |
8378 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8379 | enum bptype type, int *other_type_used) | |
8380 | { | |
8381 | int i = 0; | |
8382 | struct breakpoint *b; | |
8383 | ||
c906108c SS |
8384 | *other_type_used = 0; |
8385 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8386 | { |
a1398e0c PA |
8387 | if (b == except) |
8388 | continue; | |
e09342b5 TJB |
8389 | if (!breakpoint_enabled (b)) |
8390 | continue; | |
8391 | ||
a1398e0c PA |
8392 | if (b->type == type) |
8393 | i += hw_watchpoint_use_count (b); | |
8394 | else if (is_hardware_watchpoint (b)) | |
8395 | *other_type_used = 1; | |
e09342b5 TJB |
8396 | } |
8397 | ||
c906108c SS |
8398 | return i; |
8399 | } | |
8400 | ||
c906108c | 8401 | void |
fba45db2 | 8402 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8403 | { |
c5aa993b | 8404 | struct breakpoint *b; |
c906108c SS |
8405 | |
8406 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8407 | { |
cc60f2e3 | 8408 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8409 | { |
b5de0fa7 | 8410 | b->enable_state = bp_call_disabled; |
44702360 | 8411 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8412 | } |
8413 | } | |
c906108c SS |
8414 | } |
8415 | ||
8416 | void | |
fba45db2 | 8417 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8418 | { |
c5aa993b | 8419 | struct breakpoint *b; |
c906108c SS |
8420 | |
8421 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8422 | { |
cc60f2e3 | 8423 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8424 | { |
b5de0fa7 | 8425 | b->enable_state = bp_enabled; |
44702360 | 8426 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8427 | } |
8428 | } | |
c906108c SS |
8429 | } |
8430 | ||
8bea4e01 UW |
8431 | void |
8432 | disable_breakpoints_before_startup (void) | |
8433 | { | |
6c95b8df | 8434 | current_program_space->executing_startup = 1; |
44702360 | 8435 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8436 | } |
8437 | ||
8438 | void | |
8439 | enable_breakpoints_after_startup (void) | |
8440 | { | |
6c95b8df | 8441 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8442 | breakpoint_re_set (); |
8bea4e01 UW |
8443 | } |
8444 | ||
7c16b83e PA |
8445 | /* Create a new single-step breakpoint for thread THREAD, with no |
8446 | locations. */ | |
c906108c | 8447 | |
7c16b83e PA |
8448 | static struct breakpoint * |
8449 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8450 | { | |
b270e6f9 | 8451 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8452 | |
b270e6f9 | 8453 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8454 | &momentary_breakpoint_ops); |
8455 | ||
8456 | b->disposition = disp_donttouch; | |
8457 | b->frame_id = null_frame_id; | |
8458 | ||
8459 | b->thread = thread; | |
8460 | gdb_assert (b->thread != 0); | |
8461 | ||
b270e6f9 | 8462 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8463 | } |
8464 | ||
8465 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8466 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8467 | frame. */ | |
c906108c | 8468 | |
454dafbd | 8469 | breakpoint_up |
a6d9a66e UW |
8470 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8471 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8472 | { |
52f0bd74 | 8473 | struct breakpoint *b; |
edb3359d | 8474 | |
193facb3 JK |
8475 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8476 | tail-called one. */ | |
8477 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8478 | |
06edf0c0 | 8479 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8480 | b->enable_state = bp_enabled; |
8481 | b->disposition = disp_donttouch; | |
818dd999 | 8482 | b->frame_id = frame_id; |
c906108c | 8483 | |
00431a78 | 8484 | b->thread = inferior_thread ()->global_num; |
c906108c | 8485 | |
44702360 | 8486 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8487 | |
454dafbd | 8488 | return breakpoint_up (b); |
c906108c | 8489 | } |
611c83ae | 8490 | |
06edf0c0 | 8491 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8492 | The new breakpoint will have type TYPE, use OPS as its |
8493 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8494 | |
06edf0c0 PA |
8495 | static struct breakpoint * |
8496 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8497 | enum bptype type, | |
a1aa2221 LM |
8498 | const struct breakpoint_ops *ops, |
8499 | int loc_enabled) | |
e58b0e63 PA |
8500 | { |
8501 | struct breakpoint *copy; | |
8502 | ||
06edf0c0 | 8503 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8504 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8505 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8506 | |
a6d9a66e | 8507 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8508 | copy->loc->requested_address = orig->loc->requested_address; |
8509 | copy->loc->address = orig->loc->address; | |
8510 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8511 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8512 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8513 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8514 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8515 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8516 | copy->frame_id = orig->frame_id; |
8517 | copy->thread = orig->thread; | |
6c95b8df | 8518 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8519 | |
8520 | copy->enable_state = bp_enabled; | |
8521 | copy->disposition = disp_donttouch; | |
8522 | copy->number = internal_breakpoint_number--; | |
8523 | ||
44702360 | 8524 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8525 | return copy; |
8526 | } | |
8527 | ||
06edf0c0 PA |
8528 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8529 | ORIG is NULL. */ | |
8530 | ||
8531 | struct breakpoint * | |
8532 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8533 | { | |
8534 | /* If there's nothing to clone, then return nothing. */ | |
8535 | if (orig == NULL) | |
8536 | return NULL; | |
8537 | ||
a1aa2221 | 8538 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8539 | } |
8540 | ||
454dafbd | 8541 | breakpoint_up |
a6d9a66e UW |
8542 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8543 | enum bptype type) | |
611c83ae PA |
8544 | { |
8545 | struct symtab_and_line sal; | |
8546 | ||
8547 | sal = find_pc_line (pc, 0); | |
8548 | sal.pc = pc; | |
8549 | sal.section = find_pc_overlay (pc); | |
8550 | sal.explicit_pc = 1; | |
8551 | ||
a6d9a66e | 8552 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8553 | } |
c906108c | 8554 | \f |
c5aa993b | 8555 | |
c906108c SS |
8556 | /* Tell the user we have just set a breakpoint B. */ |
8557 | ||
8558 | static void | |
fba45db2 | 8559 | mention (struct breakpoint *b) |
c906108c | 8560 | { |
348d480f | 8561 | b->ops->print_mention (b); |
2d33446d | 8562 | current_uiout->text ("\n"); |
c906108c | 8563 | } |
c906108c | 8564 | \f |
c5aa993b | 8565 | |
1a853c52 PA |
8566 | static int bp_loc_is_permanent (struct bp_location *loc); |
8567 | ||
0d381245 | 8568 | static struct bp_location * |
39d61571 | 8569 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8570 | const struct symtab_and_line *sal) |
8571 | { | |
8572 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8573 | CORE_ADDR adjusted_address; |
8574 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8575 | ||
8576 | if (loc_gdbarch == NULL) | |
8577 | loc_gdbarch = b->gdbarch; | |
8578 | ||
8579 | /* Adjust the breakpoint's address prior to allocating a location. | |
8580 | Once we call allocate_bp_location(), that mostly uninitialized | |
8581 | location will be placed on the location chain. Adjustment of the | |
8582 | breakpoint may cause target_read_memory() to be called and we do | |
8583 | not want its scan of the location chain to find a breakpoint and | |
8584 | location that's only been partially initialized. */ | |
8585 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8586 | sal->pc, b->type); | |
0d381245 | 8587 | |
d30113d4 | 8588 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8589 | loc = allocate_bp_location (b); |
d30113d4 JK |
8590 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8591 | tmp = &((*tmp)->next)) | |
0d381245 | 8592 | ; |
d30113d4 | 8593 | loc->next = *tmp; |
0d381245 | 8594 | *tmp = loc; |
3742cc8b | 8595 | |
0d381245 | 8596 | loc->requested_address = sal->pc; |
3742cc8b | 8597 | loc->address = adjusted_address; |
6c95b8df | 8598 | loc->pspace = sal->pspace; |
935676c9 | 8599 | loc->probe.prob = sal->prob; |
729662a5 | 8600 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8601 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8602 | loc->section = sal->section; |
3742cc8b | 8603 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8604 | loc->line_number = sal->line; |
2f202fde | 8605 | loc->symtab = sal->symtab; |
4a27f119 | 8606 | loc->symbol = sal->symbol; |
3467ec66 PA |
8607 | loc->msymbol = sal->msymbol; |
8608 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8609 | |
0e30163f JK |
8610 | set_breakpoint_location_function (loc, |
8611 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8612 | |
6ae88661 LM |
8613 | /* While by definition, permanent breakpoints are already present in the |
8614 | code, we don't mark the location as inserted. Normally one would expect | |
8615 | that GDB could rely on that breakpoint instruction to stop the program, | |
8616 | thus removing the need to insert its own breakpoint, except that executing | |
8617 | the breakpoint instruction can kill the target instead of reporting a | |
8618 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8619 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8620 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8621 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8622 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8623 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8624 | it manually increments the PC, thus avoiding executing the breakpoint | |
8625 | instruction.) */ | |
1a853c52 | 8626 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8627 | loc->permanent = 1; |
1a853c52 | 8628 | |
0d381245 VP |
8629 | return loc; |
8630 | } | |
514f746b AR |
8631 | \f |
8632 | ||
1cf4d951 | 8633 | /* See breakpoint.h. */ |
514f746b | 8634 | |
1cf4d951 PA |
8635 | int |
8636 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8637 | { |
8638 | int len; | |
8639 | CORE_ADDR addr; | |
1afeeb75 | 8640 | const gdb_byte *bpoint; |
514f746b AR |
8641 | gdb_byte *target_mem; |
8642 | ||
1cf4d951 PA |
8643 | addr = address; |
8644 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8645 | ||
8646 | /* Software breakpoints unsupported? */ | |
8647 | if (bpoint == NULL) | |
8648 | return 0; | |
8649 | ||
224c3ddb | 8650 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8651 | |
8652 | /* Enable the automatic memory restoration from breakpoints while | |
8653 | we read the memory. Otherwise we could say about our temporary | |
8654 | breakpoints they are permanent. */ | |
cb85b21b TT |
8655 | scoped_restore restore_memory |
8656 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8657 | |
8658 | if (target_read_memory (address, target_mem, len) == 0 | |
8659 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8660 | return 1; |
1cf4d951 | 8661 | |
cb85b21b | 8662 | return 0; |
1cf4d951 PA |
8663 | } |
8664 | ||
8665 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8666 | return 0 otherwise. */ | |
8667 | ||
8668 | static int | |
8669 | bp_loc_is_permanent (struct bp_location *loc) | |
8670 | { | |
514f746b AR |
8671 | gdb_assert (loc != NULL); |
8672 | ||
244558af LM |
8673 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8674 | attempt to read from the addresses the locations of these breakpoint types | |
8675 | point to. program_breakpoint_here_p, below, will attempt to read | |
8676 | memory. */ | |
8677 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8678 | return 0; | |
8679 | ||
5ed8105e | 8680 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8681 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8682 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8683 | } |
8684 | ||
e7e0cddf SS |
8685 | /* Build a command list for the dprintf corresponding to the current |
8686 | settings of the dprintf style options. */ | |
8687 | ||
8688 | static void | |
8689 | update_dprintf_command_list (struct breakpoint *b) | |
8690 | { | |
8691 | char *dprintf_args = b->extra_string; | |
8692 | char *printf_line = NULL; | |
8693 | ||
8694 | if (!dprintf_args) | |
8695 | return; | |
8696 | ||
8697 | dprintf_args = skip_spaces (dprintf_args); | |
8698 | ||
8699 | /* Allow a comma, as it may have terminated a location, but don't | |
8700 | insist on it. */ | |
8701 | if (*dprintf_args == ',') | |
8702 | ++dprintf_args; | |
8703 | dprintf_args = skip_spaces (dprintf_args); | |
8704 | ||
8705 | if (*dprintf_args != '"') | |
8706 | error (_("Bad format string, missing '\"'.")); | |
8707 | ||
d3ce09f5 | 8708 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8709 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8710 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8711 | { |
8712 | if (!dprintf_function) | |
8713 | error (_("No function supplied for dprintf call")); | |
8714 | ||
8715 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8716 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8717 | dprintf_function, | |
8718 | dprintf_channel, | |
8719 | dprintf_args); | |
8720 | else | |
8721 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8722 | dprintf_function, | |
8723 | dprintf_args); | |
8724 | } | |
d3ce09f5 SS |
8725 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8726 | { | |
8727 | if (target_can_run_breakpoint_commands ()) | |
8728 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8729 | else | |
8730 | { | |
8731 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8732 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8733 | } | |
8734 | } | |
e7e0cddf SS |
8735 | else |
8736 | internal_error (__FILE__, __LINE__, | |
8737 | _("Invalid dprintf style.")); | |
8738 | ||
f28045c2 | 8739 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8740 | |
12973681 TT |
8741 | /* Manufacture a printf sequence. */ |
8742 | struct command_line *printf_cmd_line | |
8743 | = new struct command_line (simple_control, printf_line); | |
8744 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8745 | command_lines_deleter ())); | |
e7e0cddf SS |
8746 | } |
8747 | ||
8748 | /* Update all dprintf commands, making their command lists reflect | |
8749 | current style settings. */ | |
8750 | ||
8751 | static void | |
eb4c3f4a | 8752 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8753 | struct cmd_list_element *c) |
8754 | { | |
8755 | struct breakpoint *b; | |
8756 | ||
8757 | ALL_BREAKPOINTS (b) | |
8758 | { | |
8759 | if (b->type == bp_dprintf) | |
8760 | update_dprintf_command_list (b); | |
8761 | } | |
8762 | } | |
c3f6f71d | 8763 | |
f00aae0f KS |
8764 | /* Create a breakpoint with SAL as location. Use LOCATION |
8765 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8766 | as condition expression. If LOCATION is NULL then create an |
8767 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8768 | |
8769 | static void | |
d9b3f62e | 8770 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8771 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8772 | event_location_up &&location, |
e1e01040 PA |
8773 | gdb::unique_xmalloc_ptr<char> filter, |
8774 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8775 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8776 | enum bptype type, enum bpdisp disposition, |
8777 | int thread, int task, int ignore_count, | |
c0a91b2b | 8778 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8779 | int enabled, int internal, unsigned flags, |
8780 | int display_canonical) | |
018d34a4 | 8781 | { |
0d381245 | 8782 | int i; |
018d34a4 VP |
8783 | |
8784 | if (type == bp_hardware_breakpoint) | |
8785 | { | |
fbbd034e AS |
8786 | int target_resources_ok; |
8787 | ||
8788 | i = hw_breakpoint_used_count (); | |
8789 | target_resources_ok = | |
8790 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8791 | i + 1, 0); |
8792 | if (target_resources_ok == 0) | |
8793 | error (_("No hardware breakpoint support in the target.")); | |
8794 | else if (target_resources_ok < 0) | |
8795 | error (_("Hardware breakpoints used exceeds limit.")); | |
8796 | } | |
8797 | ||
6c5b2ebe | 8798 | gdb_assert (!sals.empty ()); |
6c95b8df | 8799 | |
6c5b2ebe | 8800 | for (const auto &sal : sals) |
0d381245 | 8801 | { |
0d381245 VP |
8802 | struct bp_location *loc; |
8803 | ||
8804 | if (from_tty) | |
5af949e3 UW |
8805 | { |
8806 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8807 | if (!loc_gdbarch) | |
8808 | loc_gdbarch = gdbarch; | |
8809 | ||
8810 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8811 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8812 | } |
0d381245 | 8813 | |
6c5b2ebe | 8814 | if (&sal == &sals[0]) |
0d381245 | 8815 | { |
d9b3f62e | 8816 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8817 | b->thread = thread; |
4a306c9a | 8818 | b->task = task; |
855a6e68 | 8819 | |
e1e01040 PA |
8820 | b->cond_string = cond_string.release (); |
8821 | b->extra_string = extra_string.release (); | |
0d381245 | 8822 | b->ignore_count = ignore_count; |
41447f92 | 8823 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8824 | b->disposition = disposition; |
6c95b8df | 8825 | |
44f238bb PA |
8826 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8827 | b->loc->inserted = 1; | |
8828 | ||
0fb4aa4b PA |
8829 | if (type == bp_static_tracepoint) |
8830 | { | |
d9b3f62e | 8831 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8832 | struct static_tracepoint_marker marker; |
8833 | ||
983af33b | 8834 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8835 | { |
8836 | /* We already know the marker exists, otherwise, we | |
8837 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8838 | const char *p |
8839 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8840 | const char *endp; |
0fb4aa4b | 8841 | |
f1735a53 | 8842 | p = skip_spaces (p); |
0fb4aa4b | 8843 | |
f1735a53 | 8844 | endp = skip_to_space (p); |
0fb4aa4b | 8845 | |
5d9310c4 | 8846 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8847 | |
3e43a32a MS |
8848 | printf_filtered (_("Probed static tracepoint " |
8849 | "marker \"%s\"\n"), | |
5d9310c4 | 8850 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8851 | } |
8852 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8853 | { | |
5d9310c4 | 8854 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8855 | |
3e43a32a MS |
8856 | printf_filtered (_("Probed static tracepoint " |
8857 | "marker \"%s\"\n"), | |
5d9310c4 | 8858 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8859 | } |
8860 | else | |
3e43a32a MS |
8861 | warning (_("Couldn't determine the static " |
8862 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8863 | } |
8864 | ||
0d381245 VP |
8865 | loc = b->loc; |
8866 | } | |
8867 | else | |
018d34a4 | 8868 | { |
39d61571 | 8869 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8870 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8871 | loc->inserted = 1; | |
0d381245 VP |
8872 | } |
8873 | ||
8874 | if (b->cond_string) | |
8875 | { | |
bbc13ae3 KS |
8876 | const char *arg = b->cond_string; |
8877 | ||
1bb9788d TT |
8878 | loc->cond = parse_exp_1 (&arg, loc->address, |
8879 | block_for_pc (loc->address), 0); | |
0d381245 | 8880 | if (*arg) |
588ae58c | 8881 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8882 | } |
e7e0cddf SS |
8883 | |
8884 | /* Dynamic printf requires and uses additional arguments on the | |
8885 | command line, otherwise it's an error. */ | |
8886 | if (type == bp_dprintf) | |
8887 | { | |
8888 | if (b->extra_string) | |
8889 | update_dprintf_command_list (b); | |
8890 | else | |
8891 | error (_("Format string required")); | |
8892 | } | |
8893 | else if (b->extra_string) | |
588ae58c | 8894 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8895 | } |
018d34a4 | 8896 | |
56435ebe | 8897 | b->display_canonical = display_canonical; |
f00aae0f | 8898 | if (location != NULL) |
d28cd78a | 8899 | b->location = std::move (location); |
018d34a4 | 8900 | else |
d28cd78a | 8901 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8902 | b->filter = filter.release (); |
d9b3f62e | 8903 | } |
018d34a4 | 8904 | |
d9b3f62e PA |
8905 | static void |
8906 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8907 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8908 | event_location_up &&location, |
e1e01040 PA |
8909 | gdb::unique_xmalloc_ptr<char> filter, |
8910 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8911 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8912 | enum bptype type, enum bpdisp disposition, |
8913 | int thread, int task, int ignore_count, | |
c0a91b2b | 8914 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8915 | int enabled, int internal, unsigned flags, |
8916 | int display_canonical) | |
d9b3f62e | 8917 | { |
a5e364af | 8918 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8919 | |
a5e364af | 8920 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8921 | sals, std::move (location), |
e1e01040 PA |
8922 | std::move (filter), |
8923 | std::move (cond_string), | |
8924 | std::move (extra_string), | |
d9b3f62e PA |
8925 | type, disposition, |
8926 | thread, task, ignore_count, | |
8927 | ops, from_tty, | |
44f238bb PA |
8928 | enabled, internal, flags, |
8929 | display_canonical); | |
d9b3f62e | 8930 | |
b270e6f9 | 8931 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8932 | } |
8933 | ||
8934 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8935 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8936 | value. COND_STRING, if not NULL, specified the condition to be | |
8937 | used for all breakpoints. Essentially the only case where | |
8938 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8939 | function. In that case, it's still not possible to specify | |
8940 | separate conditions for different overloaded functions, so | |
8941 | we take just a single condition string. | |
8942 | ||
c3f6f71d | 8943 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8944 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8945 | array contents). If the function fails (error() is called), the |
8946 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8947 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8948 | |
8949 | static void | |
8cdf0e15 | 8950 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8951 | struct linespec_result *canonical, |
e1e01040 PA |
8952 | gdb::unique_xmalloc_ptr<char> cond_string, |
8953 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
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 | 8957 | int enabled, int internal, unsigned flags) |
c906108c | 8958 | { |
f8eba3c6 | 8959 | if (canonical->pre_expanded) |
6c5b2ebe | 8960 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8961 | |
6c5b2ebe | 8962 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8963 | { |
f00aae0f | 8964 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8965 | 'break', without arguments. */ |
ffc2605c | 8966 | event_location_up location |
f00aae0f | 8967 | = (canonical->location != NULL |
8e9e35b1 | 8968 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8969 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8970 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8971 | |
6c5b2ebe | 8972 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8973 | std::move (location), |
e1e01040 PA |
8974 | std::move (filter_string), |
8975 | std::move (cond_string), | |
8976 | std::move (extra_string), | |
e7e0cddf | 8977 | type, disposition, |
84f4c1fe | 8978 | thread, task, ignore_count, ops, |
44f238bb | 8979 | from_tty, enabled, internal, flags, |
56435ebe | 8980 | canonical->special_display); |
c3f6f71d | 8981 | } |
c3f6f71d | 8982 | } |
c906108c | 8983 | |
f00aae0f | 8984 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8985 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8986 | addresses found. LOCATION points to the end of the SAL (for |
8987 | linespec locations). | |
9998af43 TJB |
8988 | |
8989 | The array and the line spec strings are allocated on the heap, it is | |
8990 | the caller's responsibility to free them. */ | |
c906108c | 8991 | |
b9362cc7 | 8992 | static void |
f00aae0f | 8993 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8994 | struct linespec_result *canonical) |
c3f6f71d | 8995 | { |
f00aae0f KS |
8996 | struct symtab_and_line cursal; |
8997 | ||
8998 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8999 | { | |
a20714ff | 9000 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9001 | |
a20714ff | 9002 | if (spec == NULL) |
f00aae0f KS |
9003 | { |
9004 | /* The last displayed codepoint, if it's valid, is our default | |
9005 | breakpoint address. */ | |
9006 | if (last_displayed_sal_is_valid ()) | |
9007 | { | |
f00aae0f KS |
9008 | /* Set sal's pspace, pc, symtab, and line to the values |
9009 | corresponding to the last call to print_frame_info. | |
9010 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9011 | as the breakpoint line number is inappropriate otherwise. | |
9012 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9013 | symtab_and_line sal = get_last_displayed_sal (); |
9014 | CORE_ADDR pc = sal.pc; | |
9015 | ||
f00aae0f KS |
9016 | sal = find_pc_line (pc, 0); |
9017 | ||
9018 | /* "break" without arguments is equivalent to "break *PC" | |
9019 | where PC is the last displayed codepoint's address. So | |
9020 | make sure to set sal.explicit_pc to prevent GDB from | |
9021 | trying to expand the list of sals to include all other | |
9022 | instances with the same symtab and line. */ | |
9023 | sal.pc = pc; | |
9024 | sal.explicit_pc = 1; | |
9025 | ||
6c5b2ebe PA |
9026 | struct linespec_sals lsal; |
9027 | lsal.sals = {sal}; | |
f00aae0f KS |
9028 | lsal.canonical = NULL; |
9029 | ||
6c5b2ebe | 9030 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9031 | return; |
9032 | } | |
9033 | else | |
9034 | error (_("No default breakpoint address now.")); | |
c906108c | 9035 | } |
c906108c | 9036 | } |
f00aae0f KS |
9037 | |
9038 | /* Force almost all breakpoints to be in terms of the | |
9039 | current_source_symtab (which is decode_line_1's default). | |
9040 | This should produce the results we want almost all of the | |
9041 | time while leaving default_breakpoint_* alone. | |
9042 | ||
9043 | ObjC: However, don't match an Objective-C method name which | |
9044 | may have a '+' or '-' succeeded by a '['. */ | |
9045 | cursal = get_current_source_symtab_and_line (); | |
9046 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9047 | { |
a20714ff | 9048 | const char *spec = NULL; |
cc80f267 | 9049 | |
f00aae0f | 9050 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9051 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9052 | |
f00aae0f | 9053 | if (!cursal.symtab |
a20714ff PA |
9054 | || (spec != NULL |
9055 | && strchr ("+-", spec[0]) != NULL | |
9056 | && spec[1] != '[')) | |
f00aae0f | 9057 | { |
c2f4122d | 9058 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9059 | get_last_displayed_symtab (), |
9060 | get_last_displayed_line (), | |
9061 | canonical, NULL, NULL); | |
9062 | return; | |
9063 | } | |
c906108c | 9064 | } |
f00aae0f | 9065 | |
c2f4122d | 9066 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9067 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9068 | } |
c906108c | 9069 | |
c906108c | 9070 | |
c3f6f71d | 9071 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9072 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9073 | |
b9362cc7 | 9074 | static void |
6c5b2ebe | 9075 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9076 | { |
6c5b2ebe PA |
9077 | for (auto &sal : sals) |
9078 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9079 | } |
9080 | ||
7a697b8d SS |
9081 | /* Fast tracepoints may have restrictions on valid locations. For |
9082 | instance, a fast tracepoint using a jump instead of a trap will | |
9083 | likely have to overwrite more bytes than a trap would, and so can | |
9084 | only be placed where the instruction is longer than the jump, or a | |
9085 | multi-instruction sequence does not have a jump into the middle of | |
9086 | it, etc. */ | |
9087 | ||
9088 | static void | |
9089 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9090 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9091 | { |
6c5b2ebe | 9092 | for (const auto &sal : sals) |
7a697b8d | 9093 | { |
f8eba3c6 TT |
9094 | struct gdbarch *sarch; |
9095 | ||
6c5b2ebe | 9096 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9097 | /* We fall back to GDBARCH if there is no architecture |
9098 | associated with SAL. */ | |
9099 | if (sarch == NULL) | |
9100 | sarch = gdbarch; | |
281d762b TT |
9101 | std::string msg; |
9102 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9103 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9104 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9105 | } |
9106 | } | |
9107 | ||
018d34a4 VP |
9108 | /* Given TOK, a string specification of condition and thread, as |
9109 | accepted by the 'break' command, extract the condition | |
9110 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9111 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9112 | If no condition is found, *COND_STRING is set to NULL. |
9113 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9114 | |
9115 | static void | |
bbc13ae3 | 9116 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9117 | char **cond_string, int *thread, int *task, |
9118 | char **rest) | |
018d34a4 VP |
9119 | { |
9120 | *cond_string = NULL; | |
9121 | *thread = -1; | |
ed1d1739 KS |
9122 | *task = 0; |
9123 | *rest = NULL; | |
9124 | ||
018d34a4 VP |
9125 | while (tok && *tok) |
9126 | { | |
bbc13ae3 | 9127 | const char *end_tok; |
018d34a4 | 9128 | int toklen; |
bbc13ae3 KS |
9129 | const char *cond_start = NULL; |
9130 | const char *cond_end = NULL; | |
cc59ec59 | 9131 | |
f1735a53 | 9132 | tok = skip_spaces (tok); |
e7e0cddf SS |
9133 | |
9134 | if ((*tok == '"' || *tok == ',') && rest) | |
9135 | { | |
9136 | *rest = savestring (tok, strlen (tok)); | |
9137 | return; | |
9138 | } | |
9139 | ||
f1735a53 | 9140 | end_tok = skip_to_space (tok); |
d634f2de | 9141 | |
018d34a4 | 9142 | toklen = end_tok - tok; |
d634f2de | 9143 | |
018d34a4 VP |
9144 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9145 | { | |
9146 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9147 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9148 | cond_end = tok; |
d634f2de | 9149 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9150 | } |
9151 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9152 | { | |
5d5658a1 PA |
9153 | const char *tmptok; |
9154 | struct thread_info *thr; | |
d634f2de | 9155 | |
018d34a4 | 9156 | tok = end_tok + 1; |
5d5658a1 | 9157 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9158 | if (tok == tmptok) |
9159 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9160 | *thread = thr->global_num; |
bbc13ae3 | 9161 | tok = tmptok; |
018d34a4 | 9162 | } |
4a306c9a JB |
9163 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9164 | { | |
9165 | char *tmptok; | |
9166 | ||
9167 | tok = end_tok + 1; | |
bbc13ae3 | 9168 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9169 | if (tok == tmptok) |
9170 | error (_("Junk after task keyword.")); | |
9171 | if (!valid_task_id (*task)) | |
b6199126 | 9172 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9173 | tok = tmptok; |
4a306c9a | 9174 | } |
e7e0cddf SS |
9175 | else if (rest) |
9176 | { | |
9177 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9178 | return; |
e7e0cddf | 9179 | } |
018d34a4 VP |
9180 | else |
9181 | error (_("Junk at end of arguments.")); | |
9182 | } | |
9183 | } | |
9184 | ||
0fb4aa4b PA |
9185 | /* Decode a static tracepoint marker spec. */ |
9186 | ||
6c5b2ebe | 9187 | static std::vector<symtab_and_line> |
f00aae0f | 9188 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9189 | { |
f00aae0f KS |
9190 | const char *p = &(*arg_p)[3]; |
9191 | const char *endp; | |
0fb4aa4b | 9192 | |
f1735a53 | 9193 | p = skip_spaces (p); |
0fb4aa4b | 9194 | |
f1735a53 | 9195 | endp = skip_to_space (p); |
0fb4aa4b | 9196 | |
81b1e71c | 9197 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9198 | |
5d9310c4 SM |
9199 | std::vector<static_tracepoint_marker> markers |
9200 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9201 | if (markers.empty ()) | |
81b1e71c TT |
9202 | error (_("No known static tracepoint marker named %s"), |
9203 | marker_str.c_str ()); | |
0fb4aa4b | 9204 | |
6c5b2ebe | 9205 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9206 | sals.reserve (markers.size ()); |
0fb4aa4b | 9207 | |
5d9310c4 | 9208 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9209 | { |
5d9310c4 SM |
9210 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9211 | sal.pc = marker.address; | |
6c5b2ebe | 9212 | sals.push_back (sal); |
5d9310c4 | 9213 | } |
0fb4aa4b | 9214 | |
0fb4aa4b PA |
9215 | *arg_p = endp; |
9216 | return sals; | |
9217 | } | |
9218 | ||
f00aae0f | 9219 | /* See breakpoint.h. */ |
0101ce28 | 9220 | |
8cdf0e15 VP |
9221 | int |
9222 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9223 | const struct event_location *location, |
9224 | const char *cond_string, | |
9225 | int thread, const char *extra_string, | |
f00aae0f | 9226 | int parse_extra, |
0fb4aa4b | 9227 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9228 | int ignore_count, |
9229 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9230 | const struct breakpoint_ops *ops, |
44f238bb PA |
9231 | int from_tty, int enabled, int internal, |
9232 | unsigned flags) | |
c3f6f71d | 9233 | { |
7efd8fc2 | 9234 | struct linespec_result canonical; |
80c99de1 | 9235 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9236 | int pending = 0; |
4a306c9a | 9237 | int task = 0; |
86b17b60 | 9238 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9239 | |
348d480f PA |
9240 | gdb_assert (ops != NULL); |
9241 | ||
f00aae0f KS |
9242 | /* If extra_string isn't useful, set it to NULL. */ |
9243 | if (extra_string != NULL && *extra_string == '\0') | |
9244 | extra_string = NULL; | |
9245 | ||
492d29ea | 9246 | TRY |
b78a6381 | 9247 | { |
f00aae0f | 9248 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9249 | } |
492d29ea | 9250 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9251 | { |
492d29ea PA |
9252 | /* If caller is interested in rc value from parse, set |
9253 | value. */ | |
9254 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9255 | { |
05ff989b AC |
9256 | /* If pending breakpoint support is turned off, throw |
9257 | error. */ | |
fa8d40ab JJ |
9258 | |
9259 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9260 | throw_exception (e); |
9261 | ||
9262 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9263 | |
05ff989b AC |
9264 | /* If pending breakpoint support is auto query and the user |
9265 | selects no, then simply return the error code. */ | |
059fb39f | 9266 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9267 | && !nquery (_("Make %s pending on future shared library load? "), |
9268 | bptype_string (type_wanted))) | |
fd9b8c24 | 9269 | return 0; |
fa8d40ab | 9270 | |
05ff989b AC |
9271 | /* At this point, either the user was queried about setting |
9272 | a pending breakpoint and selected yes, or pending | |
9273 | breakpoint behavior is on and thus a pending breakpoint | |
9274 | is defaulted on behalf of the user. */ | |
f00aae0f | 9275 | pending = 1; |
0101ce28 | 9276 | } |
492d29ea PA |
9277 | else |
9278 | throw_exception (e); | |
0101ce28 | 9279 | } |
492d29ea PA |
9280 | END_CATCH |
9281 | ||
6c5b2ebe | 9282 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9283 | return 0; |
c3f6f71d | 9284 | |
c3f6f71d JM |
9285 | /* ----------------------------- SNIP ----------------------------- |
9286 | Anything added to the cleanup chain beyond this point is assumed | |
9287 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9288 | then the memory is not reclaimed. */ |
9289 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9290 | |
c3f6f71d JM |
9291 | /* Resolve all line numbers to PC's and verify that the addresses |
9292 | are ok for the target. */ | |
0101ce28 | 9293 | if (!pending) |
f8eba3c6 | 9294 | { |
6c5b2ebe PA |
9295 | for (auto &lsal : canonical.lsals) |
9296 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9297 | } |
c3f6f71d | 9298 | |
7a697b8d | 9299 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9300 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9301 | { |
6c5b2ebe PA |
9302 | for (const auto &lsal : canonical.lsals) |
9303 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9304 | } |
7a697b8d | 9305 | |
c3f6f71d JM |
9306 | /* Verify that condition can be parsed, before setting any |
9307 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9308 | breakpoint. */ |
0101ce28 | 9309 | if (!pending) |
c3f6f71d | 9310 | { |
e1e01040 PA |
9311 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9312 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9313 | ||
f00aae0f | 9314 | if (parse_extra) |
72b2ff0e | 9315 | { |
0878d0fa | 9316 | char *rest; |
e1e01040 | 9317 | char *cond; |
52d361e1 | 9318 | |
6c5b2ebe | 9319 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9320 | |
0878d0fa YQ |
9321 | /* Here we only parse 'arg' to separate condition |
9322 | from thread number, so parsing in context of first | |
9323 | sal is OK. When setting the breakpoint we'll | |
9324 | re-parse it in context of each sal. */ | |
9325 | ||
6c5b2ebe | 9326 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9327 | &cond, &thread, &task, &rest); |
9328 | cond_string_copy.reset (cond); | |
9329 | extra_string_copy.reset (rest); | |
72b2ff0e | 9330 | } |
2f069f6f | 9331 | else |
72b2ff0e | 9332 | { |
f00aae0f KS |
9333 | if (type_wanted != bp_dprintf |
9334 | && extra_string != NULL && *extra_string != '\0') | |
9335 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9336 | |
9337 | /* Create a private copy of condition string. */ | |
9338 | if (cond_string) | |
e1e01040 | 9339 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9340 | /* Create a private copy of any extra string. */ |
9341 | if (extra_string) | |
e1e01040 | 9342 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9343 | } |
0fb4aa4b | 9344 | |
52d361e1 | 9345 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9346 | std::move (cond_string_copy), |
9347 | std::move (extra_string_copy), | |
9348 | type_wanted, | |
d9b3f62e PA |
9349 | tempflag ? disp_del : disp_donttouch, |
9350 | thread, task, ignore_count, ops, | |
44f238bb | 9351 | from_tty, enabled, internal, flags); |
c906108c | 9352 | } |
0101ce28 JJ |
9353 | else |
9354 | { | |
a5e364af | 9355 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9356 | |
a5e364af | 9357 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9358 | b->location = copy_event_location (location); |
bfccc43c | 9359 | |
f00aae0f KS |
9360 | if (parse_extra) |
9361 | b->cond_string = NULL; | |
e12c7713 MK |
9362 | else |
9363 | { | |
9364 | /* Create a private copy of condition string. */ | |
e1e01040 | 9365 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9366 | b->thread = thread; |
e12c7713 | 9367 | } |
f00aae0f KS |
9368 | |
9369 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9370 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9371 | b->ignore_count = ignore_count; |
0101ce28 | 9372 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9373 | b->condition_not_parsed = 1; |
41447f92 | 9374 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9375 | if ((type_wanted != bp_breakpoint |
9376 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9377 | b->pspace = current_program_space; |
8bea4e01 | 9378 | |
b270e6f9 | 9379 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9380 | } |
9381 | ||
6c5b2ebe | 9382 | if (canonical.lsals.size () > 1) |
95a42b64 | 9383 | { |
3e43a32a MS |
9384 | warning (_("Multiple breakpoints were set.\nUse the " |
9385 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9386 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9387 | } |
9388 | ||
80c99de1 PA |
9389 | /* That's it. Discard the cleanups for data inserted into the |
9390 | breakpoint. */ | |
9391 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9392 | |
80c99de1 | 9393 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9394 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9395 | |
9396 | return 1; | |
c3f6f71d | 9397 | } |
c906108c | 9398 | |
348d480f | 9399 | /* Set a breakpoint. |
72b2ff0e VP |
9400 | ARG is a string describing breakpoint address, |
9401 | condition, and thread. | |
9402 | FLAG specifies if a breakpoint is hardware on, | |
9403 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9404 | and BP_TEMPFLAG. */ | |
348d480f | 9405 | |
98deb0da | 9406 | static void |
f2fc3015 | 9407 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9408 | { |
72b2ff0e | 9409 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9410 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9411 | ? bp_hardware_breakpoint | |
9412 | : bp_breakpoint); | |
55aa24fb | 9413 | struct breakpoint_ops *ops; |
f00aae0f | 9414 | |
ffc2605c | 9415 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9416 | |
9417 | /* Matching breakpoints on probes. */ | |
5b56227b | 9418 | if (location != NULL |
ffc2605c | 9419 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9420 | ops = &bkpt_probe_breakpoint_ops; |
9421 | else | |
9422 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9423 | |
8cdf0e15 | 9424 | create_breakpoint (get_current_arch (), |
ffc2605c | 9425 | location.get (), |
f00aae0f | 9426 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9427 | tempflag, type_wanted, |
8cdf0e15 VP |
9428 | 0 /* Ignore count */, |
9429 | pending_break_support, | |
55aa24fb | 9430 | ops, |
8cdf0e15 | 9431 | from_tty, |
84f4c1fe | 9432 | 1 /* enabled */, |
44f238bb PA |
9433 | 0 /* internal */, |
9434 | 0); | |
c906108c SS |
9435 | } |
9436 | ||
c906108c SS |
9437 | /* Helper function for break_command_1 and disassemble_command. */ |
9438 | ||
9439 | void | |
fba45db2 | 9440 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9441 | { |
9442 | CORE_ADDR pc; | |
9443 | ||
9444 | if (sal->pc == 0 && sal->symtab != NULL) | |
9445 | { | |
9446 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9447 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9448 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9449 | sal->pc = pc; |
6a048695 | 9450 | |
4a64f543 MS |
9451 | /* If this SAL corresponds to a breakpoint inserted using a line |
9452 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9453 | if (sal->explicit_line) |
059acae7 | 9454 | skip_prologue_sal (sal); |
c906108c SS |
9455 | } |
9456 | ||
9457 | if (sal->section == 0 && sal->symtab != NULL) | |
9458 | { | |
346d1dfe | 9459 | const struct blockvector *bv; |
3977b71f | 9460 | const struct block *b; |
c5aa993b | 9461 | struct symbol *sym; |
c906108c | 9462 | |
43f3e411 DE |
9463 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9464 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9465 | if (bv != NULL) |
9466 | { | |
7f0df278 | 9467 | sym = block_linkage_function (b); |
c906108c SS |
9468 | if (sym != NULL) |
9469 | { | |
eb822aa6 DE |
9470 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9471 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9472 | sym); | |
c906108c SS |
9473 | } |
9474 | else | |
9475 | { | |
4a64f543 MS |
9476 | /* It really is worthwhile to have the section, so we'll |
9477 | just have to look harder. This case can be executed | |
9478 | if we have line numbers but no functions (as can | |
9479 | happen in assembly source). */ | |
c906108c | 9480 | |
5ed8105e | 9481 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9482 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9483 | |
5ed8105e | 9484 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9485 | if (msym.minsym) |
efd66ac6 | 9486 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9487 | } |
9488 | } | |
9489 | } | |
9490 | } | |
9491 | ||
9492 | void | |
0b39b52e | 9493 | break_command (const char *arg, int from_tty) |
c906108c | 9494 | { |
db107f19 | 9495 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9496 | } |
9497 | ||
c906108c | 9498 | void |
0b39b52e | 9499 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9500 | { |
db107f19 | 9501 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9502 | } |
9503 | ||
c906108c | 9504 | static void |
0b39b52e | 9505 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9506 | { |
db107f19 | 9507 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9508 | } |
9509 | ||
9510 | static void | |
0b39b52e | 9511 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9512 | { |
db107f19 | 9513 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9514 | } |
9515 | ||
9516 | static void | |
ee7ddd71 | 9517 | stop_command (const char *arg, int from_tty) |
c906108c | 9518 | { |
a3f17187 | 9519 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9520 | Usage: stop in <function | address>\n\ |
a3f17187 | 9521 | stop at <line>\n")); |
c906108c SS |
9522 | } |
9523 | ||
9524 | static void | |
4495129a | 9525 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9526 | { |
9527 | int badInput = 0; | |
9528 | ||
c5aa993b | 9529 | if (arg == (char *) NULL) |
c906108c SS |
9530 | badInput = 1; |
9531 | else if (*arg != '*') | |
9532 | { | |
4495129a | 9533 | const char *argptr = arg; |
c906108c SS |
9534 | int hasColon = 0; |
9535 | ||
4a64f543 | 9536 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9537 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9538 | function/method name. */ |
c906108c | 9539 | while (*argptr && !hasColon) |
c5aa993b JM |
9540 | { |
9541 | hasColon = (*argptr == ':'); | |
9542 | argptr++; | |
9543 | } | |
c906108c SS |
9544 | |
9545 | if (hasColon) | |
c5aa993b | 9546 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9547 | else |
c5aa993b | 9548 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9549 | } |
9550 | ||
9551 | if (badInput) | |
a3f17187 | 9552 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9553 | else |
db107f19 | 9554 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9555 | } |
9556 | ||
9557 | static void | |
4495129a | 9558 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9559 | { |
9560 | int badInput = 0; | |
9561 | ||
c5aa993b | 9562 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9563 | badInput = 1; |
9564 | else | |
9565 | { | |
4495129a | 9566 | const char *argptr = arg; |
c906108c SS |
9567 | int hasColon = 0; |
9568 | ||
4a64f543 MS |
9569 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9570 | it is probably a line number. */ | |
c906108c | 9571 | while (*argptr && !hasColon) |
c5aa993b JM |
9572 | { |
9573 | hasColon = (*argptr == ':'); | |
9574 | argptr++; | |
9575 | } | |
c906108c SS |
9576 | |
9577 | if (hasColon) | |
c5aa993b | 9578 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9579 | else |
c5aa993b | 9580 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9581 | } |
9582 | ||
9583 | if (badInput) | |
65e65158 | 9584 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9585 | else |
db107f19 | 9586 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9587 | } |
9588 | ||
e7e0cddf SS |
9589 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9590 | with a prewired command list consisting of a single output command, | |
9591 | built from extra arguments supplied on the dprintf command | |
9592 | line. */ | |
9593 | ||
da821c7b | 9594 | static void |
0b39b52e | 9595 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9596 | { |
ffc2605c | 9597 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9598 | |
9599 | /* If non-NULL, ARG should have been advanced past the location; | |
9600 | the next character must be ','. */ | |
9601 | if (arg != NULL) | |
9602 | { | |
9603 | if (arg[0] != ',' || arg[1] == '\0') | |
9604 | error (_("Format string required")); | |
9605 | else | |
9606 | { | |
9607 | /* Skip the comma. */ | |
9608 | ++arg; | |
9609 | } | |
9610 | } | |
9611 | ||
e7e0cddf | 9612 | create_breakpoint (get_current_arch (), |
ffc2605c | 9613 | location.get (), |
f00aae0f | 9614 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9615 | 0, bp_dprintf, |
9616 | 0 /* Ignore count */, | |
9617 | pending_break_support, | |
9618 | &dprintf_breakpoint_ops, | |
9619 | from_tty, | |
9620 | 1 /* enabled */, | |
9621 | 0 /* internal */, | |
9622 | 0); | |
9623 | } | |
9624 | ||
d3ce09f5 | 9625 | static void |
0b39b52e | 9626 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9627 | { |
9628 | error (_("May only run agent-printf on the target")); | |
9629 | } | |
9630 | ||
f1310107 TJB |
9631 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9632 | ranged breakpoints. */ | |
9633 | ||
9634 | static int | |
9635 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9636 | const address_space *aspace, |
09ac7c10 TT |
9637 | CORE_ADDR bp_addr, |
9638 | const struct target_waitstatus *ws) | |
f1310107 | 9639 | { |
09ac7c10 | 9640 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9641 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9642 | return 0; |
9643 | ||
f1310107 TJB |
9644 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9645 | bl->length, aspace, bp_addr); | |
9646 | } | |
9647 | ||
9648 | /* Implement the "resources_needed" breakpoint_ops method for | |
9649 | ranged breakpoints. */ | |
9650 | ||
9651 | static int | |
9652 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9653 | { | |
9654 | return target_ranged_break_num_registers (); | |
9655 | } | |
9656 | ||
9657 | /* Implement the "print_it" breakpoint_ops method for | |
9658 | ranged breakpoints. */ | |
9659 | ||
9660 | static enum print_stop_action | |
348d480f | 9661 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9662 | { |
348d480f | 9663 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9664 | struct bp_location *bl = b->loc; |
79a45e25 | 9665 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9666 | |
9667 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9668 | ||
9669 | /* Ranged breakpoints have only one location. */ | |
9670 | gdb_assert (bl && bl->next == NULL); | |
9671 | ||
9672 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9673 | |
9674 | maybe_print_thread_hit_breakpoint (uiout); | |
9675 | ||
f1310107 | 9676 | if (b->disposition == disp_del) |
112e8700 | 9677 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9678 | else |
112e8700 SM |
9679 | uiout->text ("Ranged breakpoint "); |
9680 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9681 | { |
112e8700 | 9682 | uiout->field_string ("reason", |
f1310107 | 9683 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9684 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9685 | } |
112e8700 SM |
9686 | uiout->field_int ("bkptno", b->number); |
9687 | uiout->text (", "); | |
f1310107 TJB |
9688 | |
9689 | return PRINT_SRC_AND_LOC; | |
9690 | } | |
9691 | ||
9692 | /* Implement the "print_one" breakpoint_ops method for | |
9693 | ranged breakpoints. */ | |
9694 | ||
9695 | static void | |
9696 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9697 | struct bp_location **last_loc) | |
9698 | { | |
9699 | struct bp_location *bl = b->loc; | |
9700 | struct value_print_options opts; | |
79a45e25 | 9701 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9702 | |
9703 | /* Ranged breakpoints have only one location. */ | |
9704 | gdb_assert (bl && bl->next == NULL); | |
9705 | ||
9706 | get_user_print_options (&opts); | |
9707 | ||
9708 | if (opts.addressprint) | |
9709 | /* We don't print the address range here, it will be printed later | |
9710 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9711 | uiout->field_skip ("addr"); |
f1310107 TJB |
9712 | annotate_field (5); |
9713 | print_breakpoint_location (b, bl); | |
9714 | *last_loc = bl; | |
9715 | } | |
9716 | ||
9717 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9718 | ranged breakpoints. */ | |
9719 | ||
9720 | static void | |
9721 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9722 | struct ui_out *uiout) | |
9723 | { | |
9724 | CORE_ADDR address_start, address_end; | |
9725 | struct bp_location *bl = b->loc; | |
d7e74731 | 9726 | string_file stb; |
f1310107 TJB |
9727 | |
9728 | gdb_assert (bl); | |
9729 | ||
9730 | address_start = bl->address; | |
9731 | address_end = address_start + bl->length - 1; | |
9732 | ||
112e8700 | 9733 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9734 | stb.printf ("[%s, %s]", |
9735 | print_core_address (bl->gdbarch, address_start), | |
9736 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9737 | uiout->field_stream ("addr", stb); |
9738 | uiout->text ("\n"); | |
f1310107 TJB |
9739 | } |
9740 | ||
9741 | /* Implement the "print_mention" breakpoint_ops method for | |
9742 | ranged breakpoints. */ | |
9743 | ||
9744 | static void | |
9745 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9746 | { | |
9747 | struct bp_location *bl = b->loc; | |
79a45e25 | 9748 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9749 | |
9750 | gdb_assert (bl); | |
9751 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9752 | ||
2d33446d TT |
9753 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9754 | b->number, paddress (bl->gdbarch, bl->address), | |
9755 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9756 | } |
9757 | ||
9758 | /* Implement the "print_recreate" breakpoint_ops method for | |
9759 | ranged breakpoints. */ | |
9760 | ||
9761 | static void | |
9762 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9763 | { | |
f00aae0f | 9764 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9765 | event_location_to_string (b->location.get ()), |
9766 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9767 | print_recreate_thread (b, fp); |
f1310107 TJB |
9768 | } |
9769 | ||
9770 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9771 | ||
2060206e | 9772 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9773 | |
9774 | /* Find the address where the end of the breakpoint range should be | |
9775 | placed, given the SAL of the end of the range. This is so that if | |
9776 | the user provides a line number, the end of the range is set to the | |
9777 | last instruction of the given line. */ | |
9778 | ||
9779 | static CORE_ADDR | |
9780 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9781 | { | |
9782 | CORE_ADDR end; | |
9783 | ||
9784 | /* If the user provided a PC value, use it. Otherwise, | |
9785 | find the address of the end of the given location. */ | |
9786 | if (sal.explicit_pc) | |
9787 | end = sal.pc; | |
9788 | else | |
9789 | { | |
9790 | int ret; | |
9791 | CORE_ADDR start; | |
9792 | ||
9793 | ret = find_line_pc_range (sal, &start, &end); | |
9794 | if (!ret) | |
9795 | error (_("Could not find location of the end of the range.")); | |
9796 | ||
9797 | /* find_line_pc_range returns the start of the next line. */ | |
9798 | end--; | |
9799 | } | |
9800 | ||
9801 | return end; | |
9802 | } | |
9803 | ||
9804 | /* Implement the "break-range" CLI command. */ | |
9805 | ||
9806 | static void | |
0b39b52e | 9807 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9808 | { |
f2fc3015 | 9809 | const char *arg_start; |
f1310107 TJB |
9810 | struct linespec_result canonical_start, canonical_end; |
9811 | int bp_count, can_use_bp, length; | |
9812 | CORE_ADDR end; | |
9813 | struct breakpoint *b; | |
f1310107 TJB |
9814 | |
9815 | /* We don't support software ranged breakpoints. */ | |
9816 | if (target_ranged_break_num_registers () < 0) | |
9817 | error (_("This target does not support hardware ranged breakpoints.")); | |
9818 | ||
9819 | bp_count = hw_breakpoint_used_count (); | |
9820 | bp_count += target_ranged_break_num_registers (); | |
9821 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9822 | bp_count, 0); | |
9823 | if (can_use_bp < 0) | |
9824 | error (_("Hardware breakpoints used exceeds limit.")); | |
9825 | ||
f8eba3c6 | 9826 | arg = skip_spaces (arg); |
f1310107 TJB |
9827 | if (arg == NULL || arg[0] == '\0') |
9828 | error(_("No address range specified.")); | |
9829 | ||
f8eba3c6 | 9830 | arg_start = arg; |
ffc2605c TT |
9831 | event_location_up start_location = string_to_event_location (&arg, |
9832 | current_language); | |
9833 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9834 | |
9835 | if (arg[0] != ',') | |
9836 | error (_("Too few arguments.")); | |
6c5b2ebe | 9837 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9838 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9839 | |
6c5b2ebe | 9840 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9841 | |
6c5b2ebe PA |
9842 | if (canonical_start.lsals.size () > 1 |
9843 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9844 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9845 | ||
6c5b2ebe | 9846 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9847 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9848 | |
9849 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9850 | arg = skip_spaces (arg); |
f1310107 TJB |
9851 | |
9852 | /* Parse the end location. */ | |
9853 | ||
f1310107 TJB |
9854 | arg_start = arg; |
9855 | ||
f8eba3c6 | 9856 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9857 | parse_breakpoint_sals because we need to specify the start location's |
9858 | symtab and line as the default symtab and line for the end of the | |
9859 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9860 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9861 | event_location_up end_location = string_to_event_location (&arg, |
9862 | current_language); | |
9863 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9864 | sal_start.symtab, sal_start.line, |
9865 | &canonical_end, NULL, NULL); | |
9866 | ||
6c5b2ebe | 9867 | if (canonical_end.lsals.empty ()) |
f1310107 | 9868 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9869 | |
6c5b2ebe PA |
9870 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9871 | if (canonical_end.lsals.size () > 1 | |
9872 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9873 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9874 | ||
6c5b2ebe | 9875 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9876 | |
9877 | end = find_breakpoint_range_end (sal_end); | |
9878 | if (sal_start.pc > end) | |
177b42fe | 9879 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9880 | |
9881 | length = end - sal_start.pc + 1; | |
9882 | if (length < 0) | |
9883 | /* Length overflowed. */ | |
9884 | error (_("Address range too large.")); | |
9885 | else if (length == 1) | |
9886 | { | |
9887 | /* This range is simple enough to be handled by | |
9888 | the `hbreak' command. */ | |
81b1e71c | 9889 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9890 | |
9891 | return; | |
9892 | } | |
9893 | ||
9894 | /* Now set up the breakpoint. */ | |
9895 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9896 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9897 | set_breakpoint_count (breakpoint_count + 1); |
9898 | b->number = breakpoint_count; | |
9899 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9900 | b->location = std::move (start_location); |
9901 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9902 | b->loc->length = length; |
9903 | ||
f1310107 | 9904 | mention (b); |
76727919 | 9905 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9906 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9907 | } |
9908 | ||
4a64f543 MS |
9909 | /* Return non-zero if EXP is verified as constant. Returned zero |
9910 | means EXP is variable. Also the constant detection may fail for | |
9911 | some constant expressions and in such case still falsely return | |
9912 | zero. */ | |
2e6e3d9c | 9913 | |
65d79d4b SDJ |
9914 | static int |
9915 | watchpoint_exp_is_const (const struct expression *exp) | |
9916 | { | |
9917 | int i = exp->nelts; | |
9918 | ||
9919 | while (i > 0) | |
9920 | { | |
9921 | int oplenp, argsp; | |
9922 | ||
9923 | /* We are only interested in the descriptor of each element. */ | |
9924 | operator_length (exp, i, &oplenp, &argsp); | |
9925 | i -= oplenp; | |
9926 | ||
9927 | switch (exp->elts[i].opcode) | |
9928 | { | |
9929 | case BINOP_ADD: | |
9930 | case BINOP_SUB: | |
9931 | case BINOP_MUL: | |
9932 | case BINOP_DIV: | |
9933 | case BINOP_REM: | |
9934 | case BINOP_MOD: | |
9935 | case BINOP_LSH: | |
9936 | case BINOP_RSH: | |
9937 | case BINOP_LOGICAL_AND: | |
9938 | case BINOP_LOGICAL_OR: | |
9939 | case BINOP_BITWISE_AND: | |
9940 | case BINOP_BITWISE_IOR: | |
9941 | case BINOP_BITWISE_XOR: | |
9942 | case BINOP_EQUAL: | |
9943 | case BINOP_NOTEQUAL: | |
9944 | case BINOP_LESS: | |
9945 | case BINOP_GTR: | |
9946 | case BINOP_LEQ: | |
9947 | case BINOP_GEQ: | |
9948 | case BINOP_REPEAT: | |
9949 | case BINOP_COMMA: | |
9950 | case BINOP_EXP: | |
9951 | case BINOP_MIN: | |
9952 | case BINOP_MAX: | |
9953 | case BINOP_INTDIV: | |
9954 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9955 | case TERNOP_COND: |
9956 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9957 | |
9958 | case OP_LONG: | |
edd079d9 | 9959 | case OP_FLOAT: |
65d79d4b SDJ |
9960 | case OP_LAST: |
9961 | case OP_COMPLEX: | |
9962 | case OP_STRING: | |
65d79d4b SDJ |
9963 | case OP_ARRAY: |
9964 | case OP_TYPE: | |
608b4967 TT |
9965 | case OP_TYPEOF: |
9966 | case OP_DECLTYPE: | |
6e72ca20 | 9967 | case OP_TYPEID: |
65d79d4b SDJ |
9968 | case OP_NAME: |
9969 | case OP_OBJC_NSSTRING: | |
9970 | ||
9971 | case UNOP_NEG: | |
9972 | case UNOP_LOGICAL_NOT: | |
9973 | case UNOP_COMPLEMENT: | |
9974 | case UNOP_ADDR: | |
9975 | case UNOP_HIGH: | |
aeaa2474 | 9976 | case UNOP_CAST: |
9eaf6705 TT |
9977 | |
9978 | case UNOP_CAST_TYPE: | |
9979 | case UNOP_REINTERPRET_CAST: | |
9980 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9981 | /* Unary, binary and ternary operators: We have to check |
9982 | their operands. If they are constant, then so is the | |
9983 | result of that operation. For instance, if A and B are | |
9984 | determined to be constants, then so is "A + B". | |
9985 | ||
9986 | UNOP_IND is one exception to the rule above, because the | |
9987 | value of *ADDR is not necessarily a constant, even when | |
9988 | ADDR is. */ | |
65d79d4b SDJ |
9989 | break; |
9990 | ||
9991 | case OP_VAR_VALUE: | |
9992 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9993 | |
65d79d4b | 9994 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9995 | possible that a buggy compiler could mark a variable as |
9996 | constant even when it is not, and TYPE_CONST would return | |
9997 | true in this case, while SYMBOL_CLASS wouldn't. | |
9998 | ||
9999 | We also have to check for function symbols because they | |
10000 | are always constant. */ | |
65d79d4b SDJ |
10001 | { |
10002 | struct symbol *s = exp->elts[i + 2].symbol; | |
10003 | ||
10004 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10005 | && SYMBOL_CLASS (s) != LOC_CONST | |
10006 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10007 | return 0; | |
10008 | break; | |
10009 | } | |
10010 | ||
10011 | /* The default action is to return 0 because we are using | |
10012 | the optimistic approach here: If we don't know something, | |
10013 | then it is not a constant. */ | |
10014 | default: | |
10015 | return 0; | |
10016 | } | |
10017 | } | |
10018 | ||
10019 | return 1; | |
10020 | } | |
10021 | ||
c1fc2657 | 10022 | /* Watchpoint destructor. */ |
3a5c3e22 | 10023 | |
c1fc2657 | 10024 | watchpoint::~watchpoint () |
3a5c3e22 | 10025 | { |
c1fc2657 SM |
10026 | xfree (this->exp_string); |
10027 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10028 | } |
10029 | ||
348d480f PA |
10030 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10031 | ||
10032 | static void | |
10033 | re_set_watchpoint (struct breakpoint *b) | |
10034 | { | |
3a5c3e22 PA |
10035 | struct watchpoint *w = (struct watchpoint *) b; |
10036 | ||
348d480f PA |
10037 | /* Watchpoint can be either on expression using entirely global |
10038 | variables, or it can be on local variables. | |
10039 | ||
10040 | Watchpoints of the first kind are never auto-deleted, and even | |
10041 | persist across program restarts. Since they can use variables | |
10042 | from shared libraries, we need to reparse expression as libraries | |
10043 | are loaded and unloaded. | |
10044 | ||
10045 | Watchpoints on local variables can also change meaning as result | |
10046 | of solib event. For example, if a watchpoint uses both a local | |
10047 | and a global variables in expression, it's a local watchpoint, | |
10048 | but unloading of a shared library will make the expression | |
10049 | invalid. This is not a very common use case, but we still | |
10050 | re-evaluate expression, to avoid surprises to the user. | |
10051 | ||
10052 | Note that for local watchpoints, we re-evaluate it only if | |
10053 | watchpoints frame id is still valid. If it's not, it means the | |
10054 | watchpoint is out of scope and will be deleted soon. In fact, | |
10055 | I'm not sure we'll ever be called in this case. | |
10056 | ||
10057 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10058 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10059 | |
3a5c3e22 PA |
10060 | Don't do anything about disabled watchpoints, since they will be |
10061 | reevaluated again when enabled. */ | |
10062 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10063 | } |
10064 | ||
77b06cd7 TJB |
10065 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10066 | ||
10067 | static int | |
10068 | insert_watchpoint (struct bp_location *bl) | |
10069 | { | |
3a5c3e22 PA |
10070 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10071 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10072 | |
10073 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10074 | w->cond_exp.get ()); |
77b06cd7 TJB |
10075 | } |
10076 | ||
10077 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10078 | ||
10079 | static int | |
73971819 | 10080 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10081 | { |
3a5c3e22 PA |
10082 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10083 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10084 | |
10085 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10086 | w->cond_exp.get ()); |
e09342b5 TJB |
10087 | } |
10088 | ||
e09342b5 | 10089 | static int |
348d480f | 10090 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10091 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10092 | const struct target_waitstatus *ws) |
e09342b5 | 10093 | { |
348d480f | 10094 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10095 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10096 | |
348d480f PA |
10097 | /* Continuable hardware watchpoints are treated as non-existent if the |
10098 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10099 | some data address). Otherwise gdb won't stop on a break instruction | |
10100 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10101 | been defined. Also skip watchpoints which we know did not trigger | |
10102 | (did not match the data address). */ | |
10103 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10104 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10105 | return 0; |
9c06b0b4 | 10106 | |
348d480f | 10107 | return 1; |
9c06b0b4 TJB |
10108 | } |
10109 | ||
348d480f PA |
10110 | static void |
10111 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10112 | { |
348d480f | 10113 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10114 | |
348d480f | 10115 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10116 | } |
10117 | ||
10118 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10119 | hardware watchpoints. */ |
9c06b0b4 TJB |
10120 | |
10121 | static int | |
348d480f | 10122 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10123 | { |
3a5c3e22 PA |
10124 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10125 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10126 | |
10127 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10128 | } |
10129 | ||
10130 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10131 | hardware watchpoints. */ |
9c06b0b4 TJB |
10132 | |
10133 | static int | |
348d480f | 10134 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10135 | { |
efa80663 PA |
10136 | /* Read and access watchpoints only work with hardware support. */ |
10137 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10138 | } |
10139 | ||
9c06b0b4 | 10140 | static enum print_stop_action |
348d480f | 10141 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10142 | { |
348d480f | 10143 | struct breakpoint *b; |
348d480f | 10144 | enum print_stop_action result; |
3a5c3e22 | 10145 | struct watchpoint *w; |
79a45e25 | 10146 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10147 | |
10148 | gdb_assert (bs->bp_location_at != NULL); | |
10149 | ||
348d480f | 10150 | b = bs->breakpoint_at; |
3a5c3e22 | 10151 | w = (struct watchpoint *) b; |
348d480f | 10152 | |
f303dbd6 PA |
10153 | annotate_watchpoint (b->number); |
10154 | maybe_print_thread_hit_breakpoint (uiout); | |
10155 | ||
d7e74731 PA |
10156 | string_file stb; |
10157 | ||
76f9c9cf | 10158 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10159 | switch (b->type) |
10160 | { | |
348d480f | 10161 | case bp_watchpoint: |
9c06b0b4 | 10162 | case bp_hardware_watchpoint: |
112e8700 SM |
10163 | if (uiout->is_mi_like_p ()) |
10164 | uiout->field_string | |
10165 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10166 | mention (b); |
76f9c9cf | 10167 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10168 | uiout->text ("\nOld value = "); |
850645cf | 10169 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10170 | uiout->field_stream ("old", stb); |
10171 | uiout->text ("\nNew value = "); | |
850645cf | 10172 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10173 | uiout->field_stream ("new", stb); |
10174 | uiout->text ("\n"); | |
348d480f PA |
10175 | /* More than one watchpoint may have been triggered. */ |
10176 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10177 | break; |
10178 | ||
10179 | case bp_read_watchpoint: | |
112e8700 SM |
10180 | if (uiout->is_mi_like_p ()) |
10181 | uiout->field_string | |
10182 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10183 | mention (b); |
76f9c9cf | 10184 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10185 | uiout->text ("\nValue = "); |
850645cf | 10186 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10187 | uiout->field_stream ("value", stb); |
10188 | uiout->text ("\n"); | |
348d480f | 10189 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10190 | break; |
10191 | ||
10192 | case bp_access_watchpoint: | |
348d480f PA |
10193 | if (bs->old_val != NULL) |
10194 | { | |
112e8700 SM |
10195 | if (uiout->is_mi_like_p ()) |
10196 | uiout->field_string | |
10197 | ("reason", | |
348d480f PA |
10198 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10199 | mention (b); | |
76f9c9cf | 10200 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10201 | uiout->text ("\nOld value = "); |
850645cf | 10202 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10203 | uiout->field_stream ("old", stb); |
10204 | uiout->text ("\nNew value = "); | |
348d480f PA |
10205 | } |
10206 | else | |
10207 | { | |
10208 | mention (b); | |
112e8700 SM |
10209 | if (uiout->is_mi_like_p ()) |
10210 | uiout->field_string | |
10211 | ("reason", | |
348d480f | 10212 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10213 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10214 | uiout->text ("\nValue = "); |
348d480f | 10215 | } |
850645cf | 10216 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10217 | uiout->field_stream ("new", stb); |
10218 | uiout->text ("\n"); | |
348d480f | 10219 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10220 | break; |
10221 | default: | |
348d480f | 10222 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10223 | } |
10224 | ||
348d480f PA |
10225 | return result; |
10226 | } | |
10227 | ||
10228 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10229 | watchpoints. */ | |
10230 | ||
10231 | static void | |
10232 | print_mention_watchpoint (struct breakpoint *b) | |
10233 | { | |
3a5c3e22 | 10234 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10235 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10236 | const char *tuple_name; |
348d480f PA |
10237 | |
10238 | switch (b->type) | |
10239 | { | |
10240 | case bp_watchpoint: | |
112e8700 | 10241 | uiout->text ("Watchpoint "); |
46b9c129 | 10242 | tuple_name = "wpt"; |
348d480f PA |
10243 | break; |
10244 | case bp_hardware_watchpoint: | |
112e8700 | 10245 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10246 | tuple_name = "wpt"; |
348d480f PA |
10247 | break; |
10248 | case bp_read_watchpoint: | |
112e8700 | 10249 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10250 | tuple_name = "hw-rwpt"; |
348d480f PA |
10251 | break; |
10252 | case bp_access_watchpoint: | |
112e8700 | 10253 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10254 | tuple_name = "hw-awpt"; |
348d480f PA |
10255 | break; |
10256 | default: | |
10257 | internal_error (__FILE__, __LINE__, | |
10258 | _("Invalid hardware watchpoint type.")); | |
10259 | } | |
10260 | ||
46b9c129 | 10261 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10262 | uiout->field_int ("number", b->number); |
10263 | uiout->text (": "); | |
10264 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10265 | } |
10266 | ||
10267 | /* Implement the "print_recreate" breakpoint_ops method for | |
10268 | watchpoints. */ | |
10269 | ||
10270 | static void | |
10271 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10272 | { | |
3a5c3e22 PA |
10273 | struct watchpoint *w = (struct watchpoint *) b; |
10274 | ||
348d480f PA |
10275 | switch (b->type) |
10276 | { | |
10277 | case bp_watchpoint: | |
10278 | case bp_hardware_watchpoint: | |
10279 | fprintf_unfiltered (fp, "watch"); | |
10280 | break; | |
10281 | case bp_read_watchpoint: | |
10282 | fprintf_unfiltered (fp, "rwatch"); | |
10283 | break; | |
10284 | case bp_access_watchpoint: | |
10285 | fprintf_unfiltered (fp, "awatch"); | |
10286 | break; | |
10287 | default: | |
10288 | internal_error (__FILE__, __LINE__, | |
10289 | _("Invalid watchpoint type.")); | |
10290 | } | |
10291 | ||
3a5c3e22 | 10292 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10293 | print_recreate_thread (b, fp); |
348d480f PA |
10294 | } |
10295 | ||
427cd150 TT |
10296 | /* Implement the "explains_signal" breakpoint_ops method for |
10297 | watchpoints. */ | |
10298 | ||
47591c29 | 10299 | static int |
427cd150 TT |
10300 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10301 | { | |
10302 | /* A software watchpoint cannot cause a signal other than | |
10303 | GDB_SIGNAL_TRAP. */ | |
10304 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10305 | return 0; |
427cd150 | 10306 | |
47591c29 | 10307 | return 1; |
427cd150 TT |
10308 | } |
10309 | ||
348d480f PA |
10310 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10311 | ||
2060206e | 10312 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10313 | |
10314 | /* Implement the "insert" breakpoint_ops method for | |
10315 | masked hardware watchpoints. */ | |
10316 | ||
10317 | static int | |
10318 | insert_masked_watchpoint (struct bp_location *bl) | |
10319 | { | |
3a5c3e22 PA |
10320 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10321 | ||
10322 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10323 | bl->watchpoint_type); |
10324 | } | |
10325 | ||
10326 | /* Implement the "remove" breakpoint_ops method for | |
10327 | masked hardware watchpoints. */ | |
10328 | ||
10329 | static int | |
73971819 | 10330 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10331 | { |
3a5c3e22 PA |
10332 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10333 | ||
10334 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10335 | bl->watchpoint_type); |
10336 | } | |
10337 | ||
10338 | /* Implement the "resources_needed" breakpoint_ops method for | |
10339 | masked hardware watchpoints. */ | |
10340 | ||
10341 | static int | |
10342 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10343 | { | |
3a5c3e22 PA |
10344 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10345 | ||
10346 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10347 | } |
10348 | ||
10349 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10350 | masked hardware watchpoints. */ | |
10351 | ||
10352 | static int | |
10353 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10354 | { | |
10355 | return 0; | |
10356 | } | |
10357 | ||
10358 | /* Implement the "print_it" breakpoint_ops method for | |
10359 | masked hardware watchpoints. */ | |
10360 | ||
10361 | static enum print_stop_action | |
10362 | print_it_masked_watchpoint (bpstat bs) | |
10363 | { | |
10364 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10365 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10366 | |
10367 | /* Masked watchpoints have only one location. */ | |
10368 | gdb_assert (b->loc && b->loc->next == NULL); | |
10369 | ||
f303dbd6 PA |
10370 | annotate_watchpoint (b->number); |
10371 | maybe_print_thread_hit_breakpoint (uiout); | |
10372 | ||
348d480f PA |
10373 | switch (b->type) |
10374 | { | |
10375 | case bp_hardware_watchpoint: | |
112e8700 SM |
10376 | if (uiout->is_mi_like_p ()) |
10377 | uiout->field_string | |
10378 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10379 | break; |
10380 | ||
10381 | case bp_read_watchpoint: | |
112e8700 SM |
10382 | if (uiout->is_mi_like_p ()) |
10383 | uiout->field_string | |
10384 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10385 | break; |
10386 | ||
10387 | case bp_access_watchpoint: | |
112e8700 SM |
10388 | if (uiout->is_mi_like_p ()) |
10389 | uiout->field_string | |
10390 | ("reason", | |
348d480f PA |
10391 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10392 | break; | |
10393 | default: | |
10394 | internal_error (__FILE__, __LINE__, | |
10395 | _("Invalid hardware watchpoint type.")); | |
10396 | } | |
10397 | ||
10398 | mention (b); | |
112e8700 | 10399 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10400 | Check the underlying instruction at PC for the memory\n\ |
10401 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10402 | uiout->text ("\n"); |
9c06b0b4 TJB |
10403 | |
10404 | /* More than one watchpoint may have been triggered. */ | |
10405 | return PRINT_UNKNOWN; | |
10406 | } | |
10407 | ||
10408 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10409 | masked hardware watchpoints. */ | |
10410 | ||
10411 | static void | |
10412 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10413 | struct ui_out *uiout) | |
10414 | { | |
3a5c3e22 PA |
10415 | struct watchpoint *w = (struct watchpoint *) b; |
10416 | ||
9c06b0b4 TJB |
10417 | /* Masked watchpoints have only one location. */ |
10418 | gdb_assert (b->loc && b->loc->next == NULL); | |
10419 | ||
112e8700 SM |
10420 | uiout->text ("\tmask "); |
10421 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10422 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10423 | } |
10424 | ||
10425 | /* Implement the "print_mention" breakpoint_ops method for | |
10426 | masked hardware watchpoints. */ | |
10427 | ||
10428 | static void | |
10429 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10430 | { | |
3a5c3e22 | 10431 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10432 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10433 | const char *tuple_name; |
9c06b0b4 TJB |
10434 | |
10435 | switch (b->type) | |
10436 | { | |
10437 | case bp_hardware_watchpoint: | |
112e8700 | 10438 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10439 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10440 | break; |
10441 | case bp_read_watchpoint: | |
112e8700 | 10442 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10443 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10444 | break; |
10445 | case bp_access_watchpoint: | |
112e8700 | 10446 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10447 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10448 | break; |
10449 | default: | |
10450 | internal_error (__FILE__, __LINE__, | |
10451 | _("Invalid hardware watchpoint type.")); | |
10452 | } | |
10453 | ||
46b9c129 | 10454 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10455 | uiout->field_int ("number", b->number); |
10456 | uiout->text (": "); | |
10457 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10458 | } |
10459 | ||
10460 | /* Implement the "print_recreate" breakpoint_ops method for | |
10461 | masked hardware watchpoints. */ | |
10462 | ||
10463 | static void | |
10464 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10465 | { | |
3a5c3e22 | 10466 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10467 | char tmp[40]; |
10468 | ||
10469 | switch (b->type) | |
10470 | { | |
10471 | case bp_hardware_watchpoint: | |
10472 | fprintf_unfiltered (fp, "watch"); | |
10473 | break; | |
10474 | case bp_read_watchpoint: | |
10475 | fprintf_unfiltered (fp, "rwatch"); | |
10476 | break; | |
10477 | case bp_access_watchpoint: | |
10478 | fprintf_unfiltered (fp, "awatch"); | |
10479 | break; | |
10480 | default: | |
10481 | internal_error (__FILE__, __LINE__, | |
10482 | _("Invalid hardware watchpoint type.")); | |
10483 | } | |
10484 | ||
3a5c3e22 PA |
10485 | sprintf_vma (tmp, w->hw_wp_mask); |
10486 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10487 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10488 | } |
10489 | ||
10490 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10491 | ||
2060206e | 10492 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10493 | |
10494 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10495 | ||
10496 | static int | |
10497 | is_masked_watchpoint (const struct breakpoint *b) | |
10498 | { | |
10499 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10500 | } | |
10501 | ||
53a5351d JM |
10502 | /* accessflag: hw_write: watch write, |
10503 | hw_read: watch read, | |
10504 | hw_access: watch access (read or write) */ | |
c906108c | 10505 | static void |
bbc13ae3 | 10506 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10507 | int just_location, int internal) |
c906108c | 10508 | { |
c1fc2657 | 10509 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10510 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10511 | struct value *result; |
bb9d5f81 | 10512 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10513 | const char *exp_start = NULL; |
10514 | const char *exp_end = NULL; | |
10515 | const char *tok, *end_tok; | |
9c06b0b4 | 10516 | int toklen = -1; |
bbc13ae3 KS |
10517 | const char *cond_start = NULL; |
10518 | const char *cond_end = NULL; | |
c906108c | 10519 | enum bptype bp_type; |
37e4754d | 10520 | int thread = -1; |
0cf6dd15 | 10521 | int pc = 0; |
9c06b0b4 TJB |
10522 | /* Flag to indicate whether we are going to use masks for |
10523 | the hardware watchpoint. */ | |
10524 | int use_mask = 0; | |
10525 | CORE_ADDR mask = 0; | |
c906108c | 10526 | |
37e4754d LM |
10527 | /* Make sure that we actually have parameters to parse. */ |
10528 | if (arg != NULL && arg[0] != '\0') | |
10529 | { | |
bbc13ae3 KS |
10530 | const char *value_start; |
10531 | ||
10532 | exp_end = arg + strlen (arg); | |
37e4754d | 10533 | |
9c06b0b4 TJB |
10534 | /* Look for "parameter value" pairs at the end |
10535 | of the arguments string. */ | |
bbc13ae3 | 10536 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10537 | { |
10538 | /* Skip whitespace at the end of the argument list. */ | |
10539 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10540 | tok--; | |
10541 | ||
10542 | /* Find the beginning of the last token. | |
10543 | This is the value of the parameter. */ | |
10544 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10545 | tok--; | |
10546 | value_start = tok + 1; | |
10547 | ||
10548 | /* Skip whitespace. */ | |
10549 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10550 | tok--; | |
10551 | ||
10552 | end_tok = tok; | |
10553 | ||
10554 | /* Find the beginning of the second to last token. | |
10555 | This is the parameter itself. */ | |
10556 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10557 | tok--; | |
10558 | tok++; | |
10559 | toklen = end_tok - tok + 1; | |
10560 | ||
61012eef | 10561 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10562 | { |
5d5658a1 | 10563 | struct thread_info *thr; |
9c06b0b4 TJB |
10564 | /* At this point we've found a "thread" token, which means |
10565 | the user is trying to set a watchpoint that triggers | |
10566 | only in a specific thread. */ | |
5d5658a1 | 10567 | const char *endp; |
37e4754d | 10568 | |
9c06b0b4 TJB |
10569 | if (thread != -1) |
10570 | error(_("You can specify only one thread.")); | |
37e4754d | 10571 | |
9c06b0b4 | 10572 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10573 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10574 | |
5d5658a1 | 10575 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10576 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10577 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10578 | |
5d5658a1 | 10579 | thread = thr->global_num; |
9c06b0b4 | 10580 | } |
61012eef | 10581 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10582 | { |
10583 | /* We've found a "mask" token, which means the user wants to | |
10584 | create a hardware watchpoint that is going to have the mask | |
10585 | facility. */ | |
10586 | struct value *mask_value, *mark; | |
37e4754d | 10587 | |
9c06b0b4 TJB |
10588 | if (use_mask) |
10589 | error(_("You can specify only one mask.")); | |
37e4754d | 10590 | |
9c06b0b4 | 10591 | use_mask = just_location = 1; |
37e4754d | 10592 | |
9c06b0b4 TJB |
10593 | mark = value_mark (); |
10594 | mask_value = parse_to_comma_and_eval (&value_start); | |
10595 | mask = value_as_address (mask_value); | |
10596 | value_free_to_mark (mark); | |
10597 | } | |
10598 | else | |
10599 | /* We didn't recognize what we found. We should stop here. */ | |
10600 | break; | |
37e4754d | 10601 | |
9c06b0b4 TJB |
10602 | /* Truncate the string and get rid of the "parameter value" pair before |
10603 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10604 | exp_end = tok; |
9c06b0b4 | 10605 | } |
37e4754d | 10606 | } |
bbc13ae3 KS |
10607 | else |
10608 | exp_end = arg; | |
37e4754d | 10609 | |
bbc13ae3 KS |
10610 | /* Parse the rest of the arguments. From here on out, everything |
10611 | is in terms of a newly allocated string instead of the original | |
10612 | ARG. */ | |
aee1fcdf | 10613 | innermost_block.reset (); |
81b1e71c TT |
10614 | std::string expression (arg, exp_end - arg); |
10615 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10616 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10617 | exp_end = arg; |
fa8a61dc TT |
10618 | /* Remove trailing whitespace from the expression before saving it. |
10619 | This makes the eventual display of the expression string a bit | |
10620 | prettier. */ | |
10621 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10622 | --exp_end; | |
10623 | ||
65d79d4b | 10624 | /* Checking if the expression is not constant. */ |
4d01a485 | 10625 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10626 | { |
10627 | int len; | |
10628 | ||
10629 | len = exp_end - exp_start; | |
10630 | while (len > 0 && isspace (exp_start[len - 1])) | |
10631 | len--; | |
10632 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10633 | } | |
10634 | ||
aee1fcdf | 10635 | exp_valid_block = innermost_block.block (); |
b926417a | 10636 | struct value *mark = value_mark (); |
850645cf TT |
10637 | struct value *val_as_value = nullptr; |
10638 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10639 | just_location); | |
06a64a0b | 10640 | |
850645cf | 10641 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10642 | { |
850645cf TT |
10643 | saved_bitpos = value_bitpos (val_as_value); |
10644 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10645 | } |
10646 | ||
850645cf | 10647 | value_ref_ptr val; |
06a64a0b TT |
10648 | if (just_location) |
10649 | { | |
9c06b0b4 TJB |
10650 | int ret; |
10651 | ||
06a64a0b | 10652 | exp_valid_block = NULL; |
850645cf | 10653 | val = release_value (value_addr (result)); |
06a64a0b | 10654 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10655 | |
10656 | if (use_mask) | |
10657 | { | |
850645cf | 10658 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10659 | mask); |
10660 | if (ret == -1) | |
10661 | error (_("This target does not support masked watchpoints.")); | |
10662 | else if (ret == -2) | |
10663 | error (_("Invalid mask or memory region.")); | |
10664 | } | |
06a64a0b | 10665 | } |
850645cf TT |
10666 | else if (val_as_value != NULL) |
10667 | val = release_value (val_as_value); | |
c906108c | 10668 | |
f1735a53 TT |
10669 | tok = skip_spaces (arg); |
10670 | end_tok = skip_to_space (tok); | |
c906108c SS |
10671 | |
10672 | toklen = end_tok - tok; | |
10673 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10674 | { | |
aee1fcdf | 10675 | innermost_block.reset (); |
c906108c | 10676 | tok = cond_start = end_tok + 1; |
4d01a485 | 10677 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10678 | |
10679 | /* The watchpoint expression may not be local, but the condition | |
10680 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10681 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10682 | |
c906108c SS |
10683 | cond_end = tok; |
10684 | } | |
10685 | if (*tok) | |
8a3fe4f8 | 10686 | error (_("Junk at end of command.")); |
c906108c | 10687 | |
441d7c93 PA |
10688 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10689 | ||
10690 | /* Save this because create_internal_breakpoint below invalidates | |
10691 | 'wp_frame'. */ | |
10692 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10693 | |
10694 | /* If the expression is "local", then set up a "watchpoint scope" | |
10695 | breakpoint at the point where we've left the scope of the watchpoint | |
10696 | expression. Create the scope breakpoint before the watchpoint, so | |
10697 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10698 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10699 | { |
441d7c93 PA |
10700 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10701 | ||
10702 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10703 | { |
441d7c93 PA |
10704 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10705 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10706 | ||
edb3359d | 10707 | scope_breakpoint |
441d7c93 | 10708 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10709 | bp_watchpoint_scope, |
10710 | &momentary_breakpoint_ops); | |
d983da9c | 10711 | |
441d7c93 PA |
10712 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10713 | wp_frame = NULL; | |
10714 | ||
edb3359d | 10715 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10716 | |
edb3359d DJ |
10717 | /* Automatically delete the breakpoint when it hits. */ |
10718 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10719 | |
edb3359d | 10720 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10721 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10722 | |
edb3359d | 10723 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10724 | scope_breakpoint->loc->gdbarch = caller_arch; |
10725 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10726 | scope_breakpoint->loc->address |
a6d9a66e UW |
10727 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10728 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10729 | scope_breakpoint->type); |
10730 | } | |
d983da9c DJ |
10731 | } |
10732 | ||
e8369a73 AB |
10733 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10734 | watchpoints here even if hardware watchpoints are turned off, a call | |
10735 | to update_watchpoint later in this function will cause the type to | |
10736 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10737 | ||
10738 | if (accessflag == hw_read) | |
10739 | bp_type = bp_read_watchpoint; | |
10740 | else if (accessflag == hw_access) | |
10741 | bp_type = bp_access_watchpoint; | |
10742 | else | |
10743 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10744 | |
b270e6f9 | 10745 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10746 | |
348d480f | 10747 | if (use_mask) |
b270e6f9 | 10748 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10749 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10750 | else |
b270e6f9 | 10751 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10752 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10753 | w->thread = thread; |
10754 | w->disposition = disp_donttouch; | |
10755 | w->pspace = current_program_space; | |
b22e99fd | 10756 | w->exp = std::move (exp); |
3a5c3e22 PA |
10757 | w->exp_valid_block = exp_valid_block; |
10758 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10759 | if (just_location) |
10760 | { | |
850645cf TT |
10761 | struct type *t = value_type (val.get ()); |
10762 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10763 | |
43cc5389 TT |
10764 | w->exp_string_reparse |
10765 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10766 | |
3a5c3e22 | 10767 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10768 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10769 | } |
10770 | else | |
3a5c3e22 | 10771 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10772 | |
10773 | if (use_mask) | |
10774 | { | |
3a5c3e22 | 10775 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10776 | } |
10777 | else | |
10778 | { | |
3a5c3e22 | 10779 | w->val = val; |
bb9d5f81 PP |
10780 | w->val_bitpos = saved_bitpos; |
10781 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10782 | w->val_valid = 1; |
9c06b0b4 | 10783 | } |
77b06cd7 | 10784 | |
c906108c | 10785 | if (cond_start) |
c1fc2657 | 10786 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10787 | else |
c1fc2657 | 10788 | w->cond_string = 0; |
c5aa993b | 10789 | |
441d7c93 | 10790 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10791 | { |
441d7c93 | 10792 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10793 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10794 | } |
c906108c | 10795 | else |
f6bc2008 | 10796 | { |
3a5c3e22 PA |
10797 | w->watchpoint_frame = null_frame_id; |
10798 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10799 | } |
c906108c | 10800 | |
d983da9c | 10801 | if (scope_breakpoint != NULL) |
c906108c | 10802 | { |
d983da9c DJ |
10803 | /* The scope breakpoint is related to the watchpoint. We will |
10804 | need to act on them together. */ | |
c1fc2657 | 10805 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10806 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10807 | } |
d983da9c | 10808 | |
06a64a0b TT |
10809 | if (!just_location) |
10810 | value_free_to_mark (mark); | |
2d134ed3 | 10811 | |
b270e6f9 TT |
10812 | /* Finally update the new watchpoint. This creates the locations |
10813 | that should be inserted. */ | |
10814 | update_watchpoint (w.get (), 1); | |
a9634178 | 10815 | |
b270e6f9 | 10816 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10817 | } |
10818 | ||
e09342b5 | 10819 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10820 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10821 | |
c906108c | 10822 | static int |
a6535de1 | 10823 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10824 | { |
10825 | int found_memory_cnt = 0; | |
10826 | ||
10827 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10828 | if (!can_use_hw_watchpoints) |
c906108c | 10829 | return 0; |
c5aa993b | 10830 | |
a6535de1 TT |
10831 | gdb_assert (!vals.empty ()); |
10832 | struct value *head = vals[0].get (); | |
10833 | ||
5c44784c JM |
10834 | /* Make sure that the value of the expression depends only upon |
10835 | memory contents, and values computed from them within GDB. If we | |
10836 | find any register references or function calls, we can't use a | |
10837 | hardware watchpoint. | |
10838 | ||
10839 | The idea here is that evaluating an expression generates a series | |
10840 | of values, one holding the value of every subexpression. (The | |
10841 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10842 | a*b+c.) GDB's values hold almost enough information to establish | |
10843 | the criteria given above --- they identify memory lvalues, | |
10844 | register lvalues, computed values, etcetera. So we can evaluate | |
10845 | the expression, and then scan the chain of values that leaves | |
10846 | behind to decide whether we can detect any possible change to the | |
10847 | expression's final value using only hardware watchpoints. | |
10848 | ||
10849 | However, I don't think that the values returned by inferior | |
10850 | function calls are special in any way. So this function may not | |
10851 | notice that an expression involving an inferior function call | |
10852 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10853 | for (const value_ref_ptr &iter : vals) |
c906108c | 10854 | { |
a6535de1 TT |
10855 | struct value *v = iter.get (); |
10856 | ||
5c44784c | 10857 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10858 | { |
8464be76 DJ |
10859 | if (v != head && value_lazy (v)) |
10860 | /* A lazy memory lvalue in the chain is one that GDB never | |
10861 | needed to fetch; we either just used its address (e.g., | |
10862 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10863 | in `a,b'). This doesn't apply to HEAD; if that is | |
10864 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10865 | ; |
53a5351d | 10866 | else |
5c44784c JM |
10867 | { |
10868 | /* Ahh, memory we actually used! Check if we can cover | |
10869 | it with hardware watchpoints. */ | |
df407dfe | 10870 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10871 | |
10872 | /* We only watch structs and arrays if user asked for it | |
10873 | explicitly, never if they just happen to appear in a | |
10874 | middle of some value chain. */ | |
10875 | if (v == head | |
10876 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10877 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10878 | { | |
42ae5230 | 10879 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10880 | int len; |
10881 | int num_regs; | |
10882 | ||
a9634178 | 10883 | len = (target_exact_watchpoints |
e09342b5 TJB |
10884 | && is_scalar_type_recursive (vtype))? |
10885 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10886 | |
e09342b5 TJB |
10887 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10888 | if (!num_regs) | |
2e70b7b9 MS |
10889 | return 0; |
10890 | else | |
e09342b5 | 10891 | found_memory_cnt += num_regs; |
2e70b7b9 | 10892 | } |
5c44784c | 10893 | } |
c5aa993b | 10894 | } |
5086187c AC |
10895 | else if (VALUE_LVAL (v) != not_lval |
10896 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10897 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10898 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10899 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10900 | } |
10901 | ||
10902 | /* The expression itself looks suitable for using a hardware | |
10903 | watchpoint, but give the target machine a chance to reject it. */ | |
10904 | return found_memory_cnt; | |
10905 | } | |
10906 | ||
8b93c638 | 10907 | void |
f2fc3015 | 10908 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10909 | { |
84f4c1fe | 10910 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10911 | } |
10912 | ||
06a64a0b TT |
10913 | /* A helper function that looks for the "-location" argument and then |
10914 | calls watch_command_1. */ | |
10915 | ||
10916 | static void | |
0b39b52e | 10917 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10918 | { |
10919 | int just_location = 0; | |
10920 | ||
10921 | if (arg | |
10922 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10923 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10924 | { | |
e9cafbcc | 10925 | arg = skip_spaces (arg); |
06a64a0b TT |
10926 | just_location = 1; |
10927 | } | |
10928 | ||
84f4c1fe | 10929 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10930 | } |
8926118c | 10931 | |
c5aa993b | 10932 | static void |
0b39b52e | 10933 | watch_command (const char *arg, int from_tty) |
c906108c | 10934 | { |
06a64a0b | 10935 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10936 | } |
10937 | ||
8b93c638 | 10938 | void |
f2fc3015 | 10939 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10940 | { |
84f4c1fe | 10941 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10942 | } |
8926118c | 10943 | |
c5aa993b | 10944 | static void |
0b39b52e | 10945 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10946 | { |
06a64a0b | 10947 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10948 | } |
10949 | ||
8b93c638 | 10950 | void |
f2fc3015 | 10951 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10952 | { |
84f4c1fe | 10953 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10954 | } |
8926118c | 10955 | |
c5aa993b | 10956 | static void |
0b39b52e | 10957 | awatch_command (const char *arg, int from_tty) |
c906108c | 10958 | { |
06a64a0b | 10959 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10960 | } |
c906108c | 10961 | \f |
c5aa993b | 10962 | |
cfc31633 PA |
10963 | /* Data for the FSM that manages the until(location)/advance commands |
10964 | in infcmd.c. Here because it uses the mechanisms of | |
10965 | breakpoints. */ | |
c906108c | 10966 | |
cfc31633 | 10967 | struct until_break_fsm |
bfec99b2 | 10968 | { |
cfc31633 PA |
10969 | /* The base class. */ |
10970 | struct thread_fsm thread_fsm; | |
10971 | ||
10972 | /* The thread that as current when the command was executed. */ | |
10973 | int thread; | |
10974 | ||
10975 | /* The breakpoint set at the destination location. */ | |
10976 | struct breakpoint *location_breakpoint; | |
10977 | ||
10978 | /* Breakpoint set at the return address in the caller frame. May be | |
10979 | NULL. */ | |
10980 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
10981 | }; |
10982 | ||
8980e177 PA |
10983 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
10984 | struct thread_info *thread); | |
10985 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
10986 | struct thread_info *thread); | |
cfc31633 PA |
10987 | static enum async_reply_reason |
10988 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
10989 | ||
10990 | /* until_break_fsm's vtable. */ | |
10991 | ||
10992 | static struct thread_fsm_ops until_break_fsm_ops = | |
10993 | { | |
10994 | NULL, /* dtor */ | |
10995 | until_break_fsm_clean_up, | |
10996 | until_break_fsm_should_stop, | |
10997 | NULL, /* return_value */ | |
10998 | until_break_fsm_async_reply_reason, | |
10999 | }; | |
11000 | ||
11001 | /* Allocate a new until_break_command_fsm. */ | |
11002 | ||
11003 | static struct until_break_fsm * | |
8980e177 | 11004 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11005 | breakpoint_up &&location_breakpoint, |
11006 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11007 | { |
11008 | struct until_break_fsm *sm; | |
11009 | ||
11010 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11011 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11012 | |
11013 | sm->thread = thread; | |
454dafbd TT |
11014 | sm->location_breakpoint = location_breakpoint.release (); |
11015 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11016 | |
11017 | return sm; | |
11018 | } | |
11019 | ||
11020 | /* Implementation of the 'should_stop' FSM method for the | |
11021 | until(location)/advance commands. */ | |
11022 | ||
11023 | static int | |
8980e177 PA |
11024 | until_break_fsm_should_stop (struct thread_fsm *self, |
11025 | struct thread_info *tp) | |
cfc31633 PA |
11026 | { |
11027 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11028 | |
11029 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11030 | sm->location_breakpoint) != NULL | |
11031 | || (sm->caller_breakpoint != NULL | |
11032 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11033 | sm->caller_breakpoint) != NULL)) | |
11034 | thread_fsm_set_finished (self); | |
11035 | ||
11036 | return 1; | |
11037 | } | |
11038 | ||
11039 | /* Implementation of the 'clean_up' FSM method for the | |
11040 | until(location)/advance commands. */ | |
11041 | ||
c2c6d25f | 11042 | static void |
8980e177 PA |
11043 | until_break_fsm_clean_up (struct thread_fsm *self, |
11044 | struct thread_info *thread) | |
43ff13b4 | 11045 | { |
cfc31633 | 11046 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11047 | |
cfc31633 PA |
11048 | /* Clean up our temporary breakpoints. */ |
11049 | if (sm->location_breakpoint != NULL) | |
11050 | { | |
11051 | delete_breakpoint (sm->location_breakpoint); | |
11052 | sm->location_breakpoint = NULL; | |
11053 | } | |
11054 | if (sm->caller_breakpoint != NULL) | |
11055 | { | |
11056 | delete_breakpoint (sm->caller_breakpoint); | |
11057 | sm->caller_breakpoint = NULL; | |
11058 | } | |
11059 | delete_longjmp_breakpoint (sm->thread); | |
11060 | } | |
11061 | ||
11062 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11063 | until(location)/advance commands. */ | |
11064 | ||
11065 | static enum async_reply_reason | |
11066 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11067 | { | |
11068 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11069 | } |
11070 | ||
c906108c | 11071 | void |
f2fc3015 | 11072 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11073 | { |
8556afb4 PA |
11074 | struct frame_info *frame; |
11075 | struct gdbarch *frame_gdbarch; | |
11076 | struct frame_id stack_frame_id; | |
11077 | struct frame_id caller_frame_id; | |
ffc2605c | 11078 | struct cleanup *old_chain; |
186c406b TT |
11079 | int thread; |
11080 | struct thread_info *tp; | |
cfc31633 | 11081 | struct until_break_fsm *sm; |
c906108c | 11082 | |
70509625 | 11083 | clear_proceed_status (0); |
c906108c SS |
11084 | |
11085 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11086 | this function. */ |
c5aa993b | 11087 | |
ffc2605c | 11088 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11089 | |
6c5b2ebe PA |
11090 | std::vector<symtab_and_line> sals |
11091 | = (last_displayed_sal_is_valid () | |
11092 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11093 | get_last_displayed_symtab (), | |
11094 | get_last_displayed_line ()) | |
11095 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11096 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11097 | |
6c5b2ebe | 11098 | if (sals.size () != 1) |
8a3fe4f8 | 11099 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11100 | |
6c5b2ebe | 11101 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11102 | |
c906108c | 11103 | if (*arg) |
8a3fe4f8 | 11104 | error (_("Junk at end of arguments.")); |
c5aa993b | 11105 | |
c906108c | 11106 | resolve_sal_pc (&sal); |
c5aa993b | 11107 | |
186c406b | 11108 | tp = inferior_thread (); |
5d5658a1 | 11109 | thread = tp->global_num; |
186c406b | 11110 | |
883bc8d1 PA |
11111 | old_chain = make_cleanup (null_cleanup, NULL); |
11112 | ||
8556afb4 PA |
11113 | /* Note linespec handling above invalidates the frame chain. |
11114 | Installing a breakpoint also invalidates the frame chain (as it | |
11115 | may need to switch threads), so do any frame handling before | |
11116 | that. */ | |
11117 | ||
11118 | frame = get_selected_frame (NULL); | |
11119 | frame_gdbarch = get_frame_arch (frame); | |
11120 | stack_frame_id = get_stack_frame_id (frame); | |
11121 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11122 | |
ae66c1fc EZ |
11123 | /* Keep within the current frame, or in frames called by the current |
11124 | one. */ | |
edb3359d | 11125 | |
454dafbd | 11126 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11127 | if (frame_id_p (caller_frame_id)) |
c906108c | 11128 | { |
883bc8d1 | 11129 | struct symtab_and_line sal2; |
cfc31633 | 11130 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11131 | |
11132 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11133 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11134 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11135 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11136 | sal2, | |
11137 | caller_frame_id, | |
11138 | bp_until); | |
186c406b | 11139 | |
883bc8d1 | 11140 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11141 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11142 | } |
c5aa993b | 11143 | |
c70a6932 JK |
11144 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11145 | frame = NULL; | |
11146 | ||
454dafbd | 11147 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11148 | if (anywhere) |
11149 | /* If the user told us to continue until a specified location, | |
11150 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11151 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11152 | null_frame_id, bp_until); | |
883bc8d1 PA |
11153 | else |
11154 | /* Otherwise, specify the selected frame, because we want to stop | |
11155 | only at the very same frame. */ | |
cfc31633 PA |
11156 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11157 | stack_frame_id, bp_until); | |
883bc8d1 | 11158 | |
8980e177 | 11159 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11160 | std::move (location_breakpoint), |
11161 | std::move (caller_breakpoint)); | |
cfc31633 | 11162 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11163 | |
cfc31633 | 11164 | discard_cleanups (old_chain); |
f107f563 | 11165 | |
cfc31633 | 11166 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11167 | } |
ae66c1fc | 11168 | |
c906108c SS |
11169 | /* This function attempts to parse an optional "if <cond>" clause |
11170 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11171 | |
c906108c SS |
11172 | Else, it returns a pointer to the condition string. (It does not |
11173 | attempt to evaluate the string against a particular block.) And, | |
11174 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11175 | if clause in the arg string. */ |
53a5351d | 11176 | |
63160a43 PA |
11177 | const char * |
11178 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11179 | { |
63160a43 | 11180 | const char *cond_string; |
c5aa993b JM |
11181 | |
11182 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11183 | return NULL; |
c5aa993b | 11184 | |
4a64f543 | 11185 | /* Skip the "if" keyword. */ |
c906108c | 11186 | (*arg) += 2; |
c5aa993b | 11187 | |
c906108c | 11188 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11189 | condition string. */ |
f1735a53 | 11190 | *arg = skip_spaces (*arg); |
c906108c | 11191 | cond_string = *arg; |
c5aa993b | 11192 | |
4a64f543 MS |
11193 | /* Assume that the condition occupies the remainder of the arg |
11194 | string. */ | |
c906108c | 11195 | (*arg) += strlen (cond_string); |
c5aa993b | 11196 | |
c906108c SS |
11197 | return cond_string; |
11198 | } | |
c5aa993b | 11199 | |
c906108c SS |
11200 | /* Commands to deal with catching events, such as signals, exceptions, |
11201 | process start/exit, etc. */ | |
c5aa993b JM |
11202 | |
11203 | typedef enum | |
11204 | { | |
44feb3ce TT |
11205 | catch_fork_temporary, catch_vfork_temporary, |
11206 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11207 | } |
11208 | catch_fork_kind; | |
11209 | ||
c906108c | 11210 | static void |
eb4c3f4a | 11211 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11212 | struct cmd_list_element *command) |
c906108c | 11213 | { |
a6d9a66e | 11214 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11215 | const char *cond_string = NULL; |
44feb3ce TT |
11216 | catch_fork_kind fork_kind; |
11217 | int tempflag; | |
11218 | ||
11219 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11220 | tempflag = (fork_kind == catch_fork_temporary | |
11221 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11222 | |
44feb3ce TT |
11223 | if (!arg) |
11224 | arg = ""; | |
f1735a53 | 11225 | arg = skip_spaces (arg); |
c5aa993b | 11226 | |
c906108c | 11227 | /* The allowed syntax is: |
c5aa993b JM |
11228 | catch [v]fork |
11229 | catch [v]fork if <cond> | |
11230 | ||
4a64f543 | 11231 | First, check if there's an if clause. */ |
c906108c | 11232 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11233 | |
c906108c | 11234 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11235 | error (_("Junk at end of arguments.")); |
c5aa993b | 11236 | |
c906108c | 11237 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11238 | and enable reporting of such events. */ |
c5aa993b JM |
11239 | switch (fork_kind) |
11240 | { | |
44feb3ce TT |
11241 | case catch_fork_temporary: |
11242 | case catch_fork_permanent: | |
a6d9a66e | 11243 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11244 | &catch_fork_breakpoint_ops); |
c906108c | 11245 | break; |
44feb3ce TT |
11246 | case catch_vfork_temporary: |
11247 | case catch_vfork_permanent: | |
a6d9a66e | 11248 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11249 | &catch_vfork_breakpoint_ops); |
c906108c | 11250 | break; |
c5aa993b | 11251 | default: |
8a3fe4f8 | 11252 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11253 | break; |
c5aa993b | 11254 | } |
c906108c SS |
11255 | } |
11256 | ||
11257 | static void | |
eb4c3f4a | 11258 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11259 | struct cmd_list_element *command) |
c906108c | 11260 | { |
a6d9a66e | 11261 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11262 | int tempflag; |
63160a43 | 11263 | const char *cond_string = NULL; |
c906108c | 11264 | |
44feb3ce TT |
11265 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11266 | ||
11267 | if (!arg) | |
11268 | arg = ""; | |
f1735a53 | 11269 | arg = skip_spaces (arg); |
c906108c SS |
11270 | |
11271 | /* The allowed syntax is: | |
c5aa993b JM |
11272 | catch exec |
11273 | catch exec if <cond> | |
c906108c | 11274 | |
4a64f543 | 11275 | First, check if there's an if clause. */ |
c906108c SS |
11276 | cond_string = ep_parse_optional_if_clause (&arg); |
11277 | ||
11278 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11279 | error (_("Junk at end of arguments.")); |
c906108c | 11280 | |
b270e6f9 TT |
11281 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11282 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11283 | &catch_exec_breakpoint_ops); |
11284 | c->exec_pathname = NULL; | |
11285 | ||
b270e6f9 | 11286 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11287 | } |
c5aa993b | 11288 | |
9ac4176b | 11289 | void |
28010a5d PA |
11290 | init_ada_exception_breakpoint (struct breakpoint *b, |
11291 | struct gdbarch *gdbarch, | |
11292 | struct symtab_and_line sal, | |
f2fc3015 | 11293 | const char *addr_string, |
c0a91b2b | 11294 | const struct breakpoint_ops *ops, |
28010a5d | 11295 | int tempflag, |
349774ef | 11296 | int enabled, |
28010a5d | 11297 | int from_tty) |
f7f9143b | 11298 | { |
f7f9143b JB |
11299 | if (from_tty) |
11300 | { | |
5af949e3 UW |
11301 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11302 | if (!loc_gdbarch) | |
11303 | loc_gdbarch = gdbarch; | |
11304 | ||
6c95b8df PA |
11305 | describe_other_breakpoints (loc_gdbarch, |
11306 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11307 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11308 | version for exception catchpoints, because two catchpoints | |
11309 | used for different exception names will use the same address. | |
11310 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11311 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11312 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11313 | the user what type of catchpoint it is. The above is good |
11314 | enough for now, though. */ | |
11315 | } | |
11316 | ||
28010a5d | 11317 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11318 | |
349774ef | 11319 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11320 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11321 | b->location = string_to_event_location (&addr_string, |
11322 | language_def (language_ada)); | |
f7f9143b | 11323 | b->language = language_ada; |
f7f9143b JB |
11324 | } |
11325 | ||
c906108c | 11326 | static void |
981a3fb3 | 11327 | catch_command (const char *arg, int from_tty) |
c906108c | 11328 | { |
44feb3ce | 11329 | error (_("Catch requires an event name.")); |
c906108c SS |
11330 | } |
11331 | \f | |
11332 | ||
11333 | static void | |
981a3fb3 | 11334 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11335 | { |
44feb3ce | 11336 | error (_("Catch requires an event name.")); |
c906108c SS |
11337 | } |
11338 | ||
81b1e71c | 11339 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11340 | |
11341 | static int | |
81b1e71c | 11342 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11343 | { |
81b1e71c TT |
11344 | uintptr_t ua = (uintptr_t) a; |
11345 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11346 | |
81b1e71c | 11347 | if (a->number < b->number) |
8a2c437b | 11348 | return -1; |
81b1e71c | 11349 | else if (a->number > b->number) |
8a2c437b TT |
11350 | return 1; |
11351 | ||
11352 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11353 | the number 0. */ | |
11354 | if (ua < ub) | |
11355 | return -1; | |
94b0e70d | 11356 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11357 | } |
11358 | ||
80f8a6eb | 11359 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11360 | |
11361 | static void | |
0b39b52e | 11362 | clear_command (const char *arg, int from_tty) |
c906108c | 11363 | { |
81b1e71c | 11364 | struct breakpoint *b; |
c906108c | 11365 | int default_match; |
c906108c | 11366 | |
6c5b2ebe PA |
11367 | std::vector<symtab_and_line> decoded_sals; |
11368 | symtab_and_line last_sal; | |
11369 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11370 | if (arg) |
11371 | { | |
6c5b2ebe PA |
11372 | decoded_sals |
11373 | = decode_line_with_current_source (arg, | |
11374 | (DECODE_LINE_FUNFIRSTLINE | |
11375 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11376 | default_match = 0; |
6c5b2ebe | 11377 | sals = decoded_sals; |
c906108c SS |
11378 | } |
11379 | else | |
11380 | { | |
1bfeeb0f JL |
11381 | /* Set sal's line, symtab, pc, and pspace to the values |
11382 | corresponding to the last call to print_frame_info. If the | |
11383 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11384 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11385 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11386 | error (_("No source file specified.")); |
c906108c | 11387 | |
c906108c | 11388 | default_match = 1; |
6c5b2ebe | 11389 | sals = last_sal; |
c906108c SS |
11390 | } |
11391 | ||
4a64f543 MS |
11392 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11393 | seems, because all existing breakpoints typically have both | |
11394 | file/line and pc set. So, if clear is given file/line, we can | |
11395 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11396 | |
11397 | We only support clearing given the address explicitly | |
11398 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11399 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11400 | due to optimization, all in one block. |
4a64f543 MS |
11401 | |
11402 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11403 | PC corresponding to the same file:line, the breakpoint won't |
11404 | be cleared. We probably can still clear the breakpoint, but | |
11405 | since the other PC value is never presented to user, user | |
11406 | can only find it by guessing, and it does not seem important | |
11407 | to support that. */ | |
11408 | ||
4a64f543 MS |
11409 | /* For each line spec given, delete bps which correspond to it. Do |
11410 | it in two passes, solely to preserve the current behavior that | |
11411 | from_tty is forced true if we delete more than one | |
11412 | breakpoint. */ | |
c906108c | 11413 | |
81b1e71c | 11414 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11415 | for (const auto &sal : sals) |
c906108c | 11416 | { |
05cba821 JK |
11417 | const char *sal_fullname; |
11418 | ||
c906108c | 11419 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11420 | If line given (pc == 0), clear all bpts on specified line. |
11421 | If defaulting, clear all bpts on default line | |
c906108c | 11422 | or at default pc. |
c5aa993b JM |
11423 | |
11424 | defaulting sal.pc != 0 tests to do | |
11425 | ||
11426 | 0 1 pc | |
11427 | 1 1 pc _and_ line | |
11428 | 0 0 line | |
11429 | 1 0 <can't happen> */ | |
c906108c | 11430 | |
05cba821 JK |
11431 | sal_fullname = (sal.symtab == NULL |
11432 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11433 | |
4a64f543 | 11434 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11435 | ALL_BREAKPOINTS (b) |
c5aa993b | 11436 | { |
0d381245 | 11437 | int match = 0; |
4a64f543 | 11438 | /* Are we going to delete b? */ |
cc60f2e3 | 11439 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11440 | { |
11441 | struct bp_location *loc = b->loc; | |
11442 | for (; loc; loc = loc->next) | |
11443 | { | |
f8eba3c6 TT |
11444 | /* If the user specified file:line, don't allow a PC |
11445 | match. This matches historical gdb behavior. */ | |
11446 | int pc_match = (!sal.explicit_line | |
11447 | && sal.pc | |
11448 | && (loc->pspace == sal.pspace) | |
11449 | && (loc->address == sal.pc) | |
11450 | && (!section_is_overlay (loc->section) | |
11451 | || loc->section == sal.section)); | |
4aac40c8 TT |
11452 | int line_match = 0; |
11453 | ||
11454 | if ((default_match || sal.explicit_line) | |
2f202fde | 11455 | && loc->symtab != NULL |
05cba821 | 11456 | && sal_fullname != NULL |
4aac40c8 | 11457 | && sal.pspace == loc->pspace |
05cba821 JK |
11458 | && loc->line_number == sal.line |
11459 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11460 | sal_fullname) == 0) | |
11461 | line_match = 1; | |
4aac40c8 | 11462 | |
0d381245 VP |
11463 | if (pc_match || line_match) |
11464 | { | |
11465 | match = 1; | |
11466 | break; | |
11467 | } | |
11468 | } | |
11469 | } | |
11470 | ||
11471 | if (match) | |
81b1e71c | 11472 | found.push_back (b); |
c906108c | 11473 | } |
80f8a6eb | 11474 | } |
8a2c437b | 11475 | |
80f8a6eb | 11476 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11477 | if (found.empty ()) |
80f8a6eb MS |
11478 | { |
11479 | if (arg) | |
8a3fe4f8 | 11480 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11481 | else |
8a3fe4f8 | 11482 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11483 | } |
c906108c | 11484 | |
8a2c437b | 11485 | /* Remove duplicates from the vec. */ |
81b1e71c | 11486 | std::sort (found.begin (), found.end (), |
b926417a | 11487 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11488 | { |
b926417a | 11489 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11490 | }); |
11491 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11492 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11493 | { |
b926417a | 11494 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11495 | }), |
11496 | found.end ()); | |
8a2c437b | 11497 | |
81b1e71c | 11498 | if (found.size () > 1) |
4a64f543 | 11499 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11500 | if (from_tty) |
a3f17187 | 11501 | { |
81b1e71c | 11502 | if (found.size () == 1) |
a3f17187 AC |
11503 | printf_unfiltered (_("Deleted breakpoint ")); |
11504 | else | |
11505 | printf_unfiltered (_("Deleted breakpoints ")); | |
11506 | } | |
d6e956e5 | 11507 | |
81b1e71c | 11508 | for (breakpoint *iter : found) |
80f8a6eb | 11509 | { |
c5aa993b | 11510 | if (from_tty) |
81b1e71c TT |
11511 | printf_unfiltered ("%d ", iter->number); |
11512 | delete_breakpoint (iter); | |
c906108c | 11513 | } |
80f8a6eb MS |
11514 | if (from_tty) |
11515 | putchar_unfiltered ('\n'); | |
c906108c SS |
11516 | } |
11517 | \f | |
11518 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11519 | all breakpoints that are marked for deletion, whether hit or not. | |
11520 | This is called after any breakpoint is hit, or after errors. */ | |
11521 | ||
11522 | void | |
fba45db2 | 11523 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11524 | { |
35df4500 | 11525 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11526 | |
11527 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11528 | if (bs->breakpoint_at |
11529 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11530 | && bs->stop) |
f431efe5 | 11531 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11532 | |
35df4500 | 11533 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11534 | { |
b5de0fa7 | 11535 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11536 | delete_breakpoint (b); |
11537 | } | |
c906108c SS |
11538 | } |
11539 | ||
4a64f543 MS |
11540 | /* A comparison function for bp_location AP and BP being interfaced to |
11541 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11542 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11543 | secondarily by ordering first permanent elements and |
4a64f543 | 11544 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11545 | qsort being an unstable algorithm. */ |
876fa593 JK |
11546 | |
11547 | static int | |
f5336ca5 | 11548 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11549 | { |
9a3c8263 SM |
11550 | const struct bp_location *a = *(const struct bp_location **) ap; |
11551 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11552 | |
11553 | if (a->address != b->address) | |
11554 | return (a->address > b->address) - (a->address < b->address); | |
11555 | ||
dea2aa5f LM |
11556 | /* Sort locations at the same address by their pspace number, keeping |
11557 | locations of the same inferior (in a multi-inferior environment) | |
11558 | grouped. */ | |
11559 | ||
11560 | if (a->pspace->num != b->pspace->num) | |
11561 | return ((a->pspace->num > b->pspace->num) | |
11562 | - (a->pspace->num < b->pspace->num)); | |
11563 | ||
876fa593 | 11564 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11565 | if (a->permanent != b->permanent) |
11566 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11567 | |
c56a97f9 JK |
11568 | /* Make the internal GDB representation stable across GDB runs |
11569 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11570 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11571 | |
11572 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11573 | return ((a->owner->number > b->owner->number) |
11574 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11575 | |
11576 | return (a > b) - (a < b); | |
11577 | } | |
11578 | ||
f5336ca5 PA |
11579 | /* Set bp_locations_placed_address_before_address_max and |
11580 | bp_locations_shadow_len_after_address_max according to the current | |
11581 | content of the bp_locations array. */ | |
f7545552 TT |
11582 | |
11583 | static void | |
f5336ca5 | 11584 | bp_locations_target_extensions_update (void) |
f7545552 | 11585 | { |
876fa593 JK |
11586 | struct bp_location *bl, **blp_tmp; |
11587 | ||
f5336ca5 PA |
11588 | bp_locations_placed_address_before_address_max = 0; |
11589 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11590 | |
11591 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11592 | { | |
11593 | CORE_ADDR start, end, addr; | |
11594 | ||
11595 | if (!bp_location_has_shadow (bl)) | |
11596 | continue; | |
11597 | ||
11598 | start = bl->target_info.placed_address; | |
11599 | end = start + bl->target_info.shadow_len; | |
11600 | ||
11601 | gdb_assert (bl->address >= start); | |
11602 | addr = bl->address - start; | |
f5336ca5 PA |
11603 | if (addr > bp_locations_placed_address_before_address_max) |
11604 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11605 | |
11606 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11607 | ||
11608 | gdb_assert (bl->address < end); | |
11609 | addr = end - bl->address; | |
f5336ca5 PA |
11610 | if (addr > bp_locations_shadow_len_after_address_max) |
11611 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11612 | } |
f7545552 TT |
11613 | } |
11614 | ||
1e4d1764 YQ |
11615 | /* Download tracepoint locations if they haven't been. */ |
11616 | ||
11617 | static void | |
11618 | download_tracepoint_locations (void) | |
11619 | { | |
7ed2c994 | 11620 | struct breakpoint *b; |
dd2e65cc | 11621 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11622 | |
5ed8105e | 11623 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11624 | |
7ed2c994 | 11625 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11626 | { |
7ed2c994 | 11627 | struct bp_location *bl; |
1e4d1764 | 11628 | struct tracepoint *t; |
f2a8bc8a | 11629 | int bp_location_downloaded = 0; |
1e4d1764 | 11630 | |
7ed2c994 | 11631 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11632 | ? !may_insert_fast_tracepoints |
11633 | : !may_insert_tracepoints)) | |
11634 | continue; | |
11635 | ||
dd2e65cc YQ |
11636 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11637 | { | |
11638 | if (target_can_download_tracepoint ()) | |
11639 | can_download_tracepoint = TRIBOOL_TRUE; | |
11640 | else | |
11641 | can_download_tracepoint = TRIBOOL_FALSE; | |
11642 | } | |
11643 | ||
11644 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11645 | break; | |
11646 | ||
7ed2c994 YQ |
11647 | for (bl = b->loc; bl; bl = bl->next) |
11648 | { | |
11649 | /* In tracepoint, locations are _never_ duplicated, so | |
11650 | should_be_inserted is equivalent to | |
11651 | unduplicated_should_be_inserted. */ | |
11652 | if (!should_be_inserted (bl) || bl->inserted) | |
11653 | continue; | |
1e4d1764 | 11654 | |
7ed2c994 | 11655 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11656 | |
7ed2c994 | 11657 | target_download_tracepoint (bl); |
1e4d1764 | 11658 | |
7ed2c994 | 11659 | bl->inserted = 1; |
f2a8bc8a | 11660 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11661 | } |
11662 | t = (struct tracepoint *) b; | |
11663 | t->number_on_target = b->number; | |
f2a8bc8a | 11664 | if (bp_location_downloaded) |
76727919 | 11665 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11666 | } |
1e4d1764 YQ |
11667 | } |
11668 | ||
934709f0 PW |
11669 | /* Swap the insertion/duplication state between two locations. */ |
11670 | ||
11671 | static void | |
11672 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11673 | { | |
11674 | const int left_inserted = left->inserted; | |
11675 | const int left_duplicate = left->duplicate; | |
b775012e | 11676 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11677 | const struct bp_target_info left_target_info = left->target_info; |
11678 | ||
1e4d1764 YQ |
11679 | /* Locations of tracepoints can never be duplicated. */ |
11680 | if (is_tracepoint (left->owner)) | |
11681 | gdb_assert (!left->duplicate); | |
11682 | if (is_tracepoint (right->owner)) | |
11683 | gdb_assert (!right->duplicate); | |
11684 | ||
934709f0 PW |
11685 | left->inserted = right->inserted; |
11686 | left->duplicate = right->duplicate; | |
b775012e | 11687 | left->needs_update = right->needs_update; |
934709f0 PW |
11688 | left->target_info = right->target_info; |
11689 | right->inserted = left_inserted; | |
11690 | right->duplicate = left_duplicate; | |
b775012e | 11691 | right->needs_update = left_needs_update; |
934709f0 PW |
11692 | right->target_info = left_target_info; |
11693 | } | |
11694 | ||
b775012e LM |
11695 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11696 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11697 | conditions on the target's side. Such conditions need to be updated on | |
11698 | the target. */ | |
11699 | ||
11700 | static void | |
11701 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11702 | { | |
11703 | struct bp_location **locp = NULL, **loc2p; | |
11704 | struct bp_location *loc; | |
11705 | CORE_ADDR address = 0; | |
11706 | int pspace_num; | |
11707 | ||
11708 | address = bl->address; | |
11709 | pspace_num = bl->pspace->num; | |
11710 | ||
11711 | /* This is only meaningful if the target is | |
11712 | evaluating conditions and if the user has | |
11713 | opted for condition evaluation on the target's | |
11714 | side. */ | |
11715 | if (gdb_evaluates_breakpoint_condition_p () | |
11716 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11717 | return; | |
11718 | ||
11719 | /* Flag all breakpoint locations with this address and | |
11720 | the same program space as the location | |
11721 | as "its condition has changed". We need to | |
11722 | update the conditions on the target's side. */ | |
11723 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11724 | { | |
11725 | loc = *loc2p; | |
11726 | ||
11727 | if (!is_breakpoint (loc->owner) | |
11728 | || pspace_num != loc->pspace->num) | |
11729 | continue; | |
11730 | ||
11731 | /* Flag the location appropriately. We use a different state to | |
11732 | let everyone know that we already updated the set of locations | |
11733 | with addr bl->address and program space bl->pspace. This is so | |
11734 | we don't have to keep calling these functions just to mark locations | |
11735 | that have already been marked. */ | |
11736 | loc->condition_changed = condition_updated; | |
11737 | ||
11738 | /* Free the agent expression bytecode as well. We will compute | |
11739 | it later on. */ | |
833177a4 | 11740 | loc->cond_bytecode.reset (); |
b775012e LM |
11741 | } |
11742 | } | |
44702360 PA |
11743 | /* Called whether new breakpoints are created, or existing breakpoints |
11744 | deleted, to update the global location list and recompute which | |
11745 | locations are duplicate of which. | |
b775012e | 11746 | |
04086b45 PA |
11747 | The INSERT_MODE flag determines whether locations may not, may, or |
11748 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11749 | info. */ | |
b60e7edf | 11750 | |
0d381245 | 11751 | static void |
44702360 | 11752 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11753 | { |
74960c60 | 11754 | struct breakpoint *b; |
876fa593 | 11755 | struct bp_location **locp, *loc; |
b775012e LM |
11756 | /* Last breakpoint location address that was marked for update. */ |
11757 | CORE_ADDR last_addr = 0; | |
11758 | /* Last breakpoint location program space that was marked for update. */ | |
11759 | int last_pspace_num = -1; | |
f7545552 | 11760 | |
2d134ed3 PA |
11761 | /* Used in the duplicates detection below. When iterating over all |
11762 | bp_locations, points to the first bp_location of a given address. | |
11763 | Breakpoints and watchpoints of different types are never | |
11764 | duplicates of each other. Keep one pointer for each type of | |
11765 | breakpoint/watchpoint, so we only need to loop over all locations | |
11766 | once. */ | |
11767 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11768 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11769 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11770 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11771 | |
f5336ca5 PA |
11772 | /* Saved former bp_locations array which we compare against the newly |
11773 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11774 | struct bp_location **old_locp; |
f5336ca5 | 11775 | unsigned old_locations_count; |
81b1e71c | 11776 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11777 | |
f5336ca5 PA |
11778 | old_locations_count = bp_locations_count; |
11779 | bp_locations = NULL; | |
11780 | bp_locations_count = 0; | |
0d381245 | 11781 | |
74960c60 | 11782 | ALL_BREAKPOINTS (b) |
876fa593 | 11783 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11784 | bp_locations_count++; |
876fa593 | 11785 | |
f5336ca5 PA |
11786 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11787 | locp = bp_locations; | |
876fa593 JK |
11788 | ALL_BREAKPOINTS (b) |
11789 | for (loc = b->loc; loc; loc = loc->next) | |
11790 | *locp++ = loc; | |
f5336ca5 PA |
11791 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11792 | bp_locations_compare); | |
876fa593 | 11793 | |
f5336ca5 | 11794 | bp_locations_target_extensions_update (); |
74960c60 | 11795 | |
4a64f543 MS |
11796 | /* Identify bp_location instances that are no longer present in the |
11797 | new list, and therefore should be freed. Note that it's not | |
11798 | necessary that those locations should be removed from inferior -- | |
11799 | if there's another location at the same address (previously | |
11800 | marked as duplicate), we don't need to remove/insert the | |
11801 | location. | |
876fa593 | 11802 | |
4a64f543 MS |
11803 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11804 | and former bp_location array state respectively. */ | |
876fa593 | 11805 | |
f5336ca5 | 11806 | locp = bp_locations; |
81b1e71c TT |
11807 | for (old_locp = old_locations.get (); |
11808 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11809 | old_locp++) |
74960c60 | 11810 | { |
876fa593 | 11811 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11812 | struct bp_location **loc2p; |
876fa593 | 11813 | |
e5dd4106 | 11814 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11815 | not, we have to free it. */ |
c7d46a38 | 11816 | int found_object = 0; |
20874c92 VP |
11817 | /* Tells if the location should remain inserted in the target. */ |
11818 | int keep_in_target = 0; | |
11819 | int removed = 0; | |
876fa593 | 11820 | |
4a64f543 MS |
11821 | /* Skip LOCP entries which will definitely never be needed. |
11822 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11823 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11824 | && (*locp)->address < old_loc->address) |
876fa593 | 11825 | locp++; |
c7d46a38 PA |
11826 | |
11827 | for (loc2p = locp; | |
f5336ca5 | 11828 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11829 | && (*loc2p)->address == old_loc->address); |
11830 | loc2p++) | |
11831 | { | |
b775012e LM |
11832 | /* Check if this is a new/duplicated location or a duplicated |
11833 | location that had its condition modified. If so, we want to send | |
11834 | its condition to the target if evaluation of conditions is taking | |
11835 | place there. */ | |
11836 | if ((*loc2p)->condition_changed == condition_modified | |
11837 | && (last_addr != old_loc->address | |
11838 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11839 | { |
b775012e LM |
11840 | force_breakpoint_reinsertion (*loc2p); |
11841 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11842 | } |
b775012e LM |
11843 | |
11844 | if (*loc2p == old_loc) | |
11845 | found_object = 1; | |
c7d46a38 | 11846 | } |
74960c60 | 11847 | |
b775012e LM |
11848 | /* We have already handled this address, update it so that we don't |
11849 | have to go through updates again. */ | |
11850 | last_addr = old_loc->address; | |
11851 | ||
11852 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11853 | if (!found_object) | |
11854 | force_breakpoint_reinsertion (old_loc); | |
11855 | ||
4a64f543 MS |
11856 | /* If this location is no longer present, and inserted, look if |
11857 | there's maybe a new location at the same address. If so, | |
11858 | mark that one inserted, and don't remove this one. This is | |
11859 | needed so that we don't have a time window where a breakpoint | |
11860 | at certain location is not inserted. */ | |
74960c60 | 11861 | |
876fa593 | 11862 | if (old_loc->inserted) |
0d381245 | 11863 | { |
4a64f543 MS |
11864 | /* If the location is inserted now, we might have to remove |
11865 | it. */ | |
74960c60 | 11866 | |
876fa593 | 11867 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11868 | { |
4a64f543 MS |
11869 | /* The location is still present in the location list, |
11870 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11871 | keep_in_target = 1; |
74960c60 VP |
11872 | } |
11873 | else | |
11874 | { | |
b775012e LM |
11875 | /* This location still exists, but it won't be kept in the |
11876 | target since it may have been disabled. We proceed to | |
11877 | remove its target-side condition. */ | |
11878 | ||
4a64f543 MS |
11879 | /* The location is either no longer present, or got |
11880 | disabled. See if there's another location at the | |
11881 | same address, in which case we don't need to remove | |
11882 | this one from the target. */ | |
876fa593 | 11883 | |
2bdf28a0 | 11884 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11885 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11886 | { | |
876fa593 | 11887 | for (loc2p = locp; |
f5336ca5 | 11888 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11889 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11890 | loc2p++) |
11891 | { | |
11892 | struct bp_location *loc2 = *loc2p; | |
11893 | ||
2d134ed3 | 11894 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11895 | { |
85d721b8 PA |
11896 | /* Read watchpoint locations are switched to |
11897 | access watchpoints, if the former are not | |
11898 | supported, but the latter are. */ | |
11899 | if (is_hardware_watchpoint (old_loc->owner)) | |
11900 | { | |
11901 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11902 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11903 | } | |
11904 | ||
934709f0 PW |
11905 | /* loc2 is a duplicated location. We need to check |
11906 | if it should be inserted in case it will be | |
11907 | unduplicated. */ | |
11908 | if (loc2 != old_loc | |
11909 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11910 | { |
934709f0 | 11911 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11912 | keep_in_target = 1; |
11913 | break; | |
11914 | } | |
876fa593 JK |
11915 | } |
11916 | } | |
11917 | } | |
74960c60 VP |
11918 | } |
11919 | ||
20874c92 VP |
11920 | if (!keep_in_target) |
11921 | { | |
834c0d03 | 11922 | if (remove_breakpoint (old_loc)) |
20874c92 | 11923 | { |
4a64f543 MS |
11924 | /* This is just about all we can do. We could keep |
11925 | this location on the global list, and try to | |
11926 | remove it next time, but there's no particular | |
11927 | reason why we will succeed next time. | |
20874c92 | 11928 | |
4a64f543 MS |
11929 | Note that at this point, old_loc->owner is still |
11930 | valid, as delete_breakpoint frees the breakpoint | |
11931 | only after calling us. */ | |
3e43a32a MS |
11932 | printf_filtered (_("warning: Error removing " |
11933 | "breakpoint %d\n"), | |
876fa593 | 11934 | old_loc->owner->number); |
20874c92 VP |
11935 | } |
11936 | removed = 1; | |
11937 | } | |
0d381245 | 11938 | } |
74960c60 VP |
11939 | |
11940 | if (!found_object) | |
1c5cfe86 | 11941 | { |
fbea99ea | 11942 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11943 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11944 | { |
db82e815 PA |
11945 | /* This location was removed from the target. In |
11946 | non-stop mode, a race condition is possible where | |
11947 | we've removed a breakpoint, but stop events for that | |
11948 | breakpoint are already queued and will arrive later. | |
11949 | We apply an heuristic to be able to distinguish such | |
11950 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11951 | breakpoint location for a bit, and will retire it | |
11952 | after we see some number of events. The theory here | |
11953 | is that reporting of events should, "on the average", | |
11954 | be fair, so after a while we'll see events from all | |
11955 | threads that have anything of interest, and no longer | |
11956 | need to keep this breakpoint location around. We | |
11957 | don't hold locations forever so to reduce chances of | |
11958 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11959 | SIGTRAP. | |
11960 | ||
11961 | The heuristic failing can be disastrous on | |
11962 | decr_pc_after_break targets. | |
11963 | ||
11964 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11965 | if we fail to recognize a late breakpoint SIGTRAP, | |
11966 | because events_till_retirement has reached 0 too | |
11967 | soon, we'll fail to do the PC adjustment, and report | |
11968 | a random SIGTRAP to the user. When the user resumes | |
11969 | the inferior, it will most likely immediately crash | |
2dec564e | 11970 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11971 | corrupted, because of being resumed e.g., in the |
11972 | middle of a multi-byte instruction, or skipped a | |
11973 | one-byte instruction. This was actually seen happen | |
11974 | on native x86-linux, and should be less rare on | |
11975 | targets that do not support new thread events, like | |
11976 | remote, due to the heuristic depending on | |
11977 | thread_count. | |
11978 | ||
11979 | Mistaking a random SIGTRAP for a breakpoint trap | |
11980 | causes similar symptoms (PC adjustment applied when | |
11981 | it shouldn't), but then again, playing with SIGTRAPs | |
11982 | behind the debugger's back is asking for trouble. | |
11983 | ||
11984 | Since hardware watchpoint traps are always | |
11985 | distinguishable from other traps, so we don't need to | |
11986 | apply keep hardware watchpoint moribund locations | |
11987 | around. We simply always ignore hardware watchpoint | |
11988 | traps we can no longer explain. */ | |
11989 | ||
876fa593 JK |
11990 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11991 | old_loc->owner = NULL; | |
20874c92 | 11992 | |
1123588c | 11993 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11994 | } |
11995 | else | |
f431efe5 PA |
11996 | { |
11997 | old_loc->owner = NULL; | |
11998 | decref_bp_location (&old_loc); | |
11999 | } | |
20874c92 | 12000 | } |
74960c60 | 12001 | } |
1c5cfe86 | 12002 | |
348d480f PA |
12003 | /* Rescan breakpoints at the same address and section, marking the |
12004 | first one as "first" and any others as "duplicates". This is so | |
12005 | that the bpt instruction is only inserted once. If we have a | |
12006 | permanent breakpoint at the same place as BPT, make that one the | |
12007 | official one, and the rest as duplicates. Permanent breakpoints | |
12008 | are sorted first for the same address. | |
12009 | ||
12010 | Do the same for hardware watchpoints, but also considering the | |
12011 | watchpoint's type (regular/access/read) and length. */ | |
12012 | ||
12013 | bp_loc_first = NULL; | |
12014 | wp_loc_first = NULL; | |
12015 | awp_loc_first = NULL; | |
12016 | rwp_loc_first = NULL; | |
12017 | ALL_BP_LOCATIONS (loc, locp) | |
12018 | { | |
12019 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12020 | non-NULL. */ | |
348d480f | 12021 | struct bp_location **loc_first_p; |
d3fbdd86 | 12022 | b = loc->owner; |
348d480f | 12023 | |
6f380991 | 12024 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12025 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12026 | /* Don't detect duplicate for tracepoint locations because they are |
12027 | never duplicated. See the comments in field `duplicate' of | |
12028 | `struct bp_location'. */ | |
348d480f | 12029 | || is_tracepoint (b)) |
b775012e LM |
12030 | { |
12031 | /* Clear the condition modification flag. */ | |
12032 | loc->condition_changed = condition_unchanged; | |
12033 | continue; | |
12034 | } | |
348d480f | 12035 | |
348d480f PA |
12036 | if (b->type == bp_hardware_watchpoint) |
12037 | loc_first_p = &wp_loc_first; | |
12038 | else if (b->type == bp_read_watchpoint) | |
12039 | loc_first_p = &rwp_loc_first; | |
12040 | else if (b->type == bp_access_watchpoint) | |
12041 | loc_first_p = &awp_loc_first; | |
12042 | else | |
12043 | loc_first_p = &bp_loc_first; | |
12044 | ||
12045 | if (*loc_first_p == NULL | |
12046 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12047 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12048 | { | |
12049 | *loc_first_p = loc; | |
12050 | loc->duplicate = 0; | |
b775012e LM |
12051 | |
12052 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12053 | { | |
12054 | loc->needs_update = 1; | |
12055 | /* Clear the condition modification flag. */ | |
12056 | loc->condition_changed = condition_unchanged; | |
12057 | } | |
348d480f PA |
12058 | continue; |
12059 | } | |
12060 | ||
934709f0 PW |
12061 | |
12062 | /* This and the above ensure the invariant that the first location | |
12063 | is not duplicated, and is the inserted one. | |
12064 | All following are marked as duplicated, and are not inserted. */ | |
12065 | if (loc->inserted) | |
12066 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12067 | loc->duplicate = 1; |
12068 | ||
b775012e LM |
12069 | /* Clear the condition modification flag. */ |
12070 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12071 | } |
12072 | ||
a25a5a45 | 12073 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12074 | { |
04086b45 | 12075 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12076 | insert_breakpoint_locations (); |
12077 | else | |
12078 | { | |
44702360 PA |
12079 | /* Even though the caller told us to not insert new |
12080 | locations, we may still need to update conditions on the | |
12081 | target's side of breakpoints that were already inserted | |
12082 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12083 | only update conditions for locations that are marked |
12084 | "needs_update". */ | |
12085 | update_inserted_breakpoint_locations (); | |
12086 | } | |
12087 | } | |
348d480f | 12088 | |
04086b45 | 12089 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12090 | download_tracepoint_locations (); |
348d480f PA |
12091 | } |
12092 | ||
12093 | void | |
12094 | breakpoint_retire_moribund (void) | |
12095 | { | |
1123588c TT |
12096 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12097 | { | |
12098 | struct bp_location *loc = moribund_locations[ix]; | |
12099 | if (--(loc->events_till_retirement) == 0) | |
12100 | { | |
12101 | decref_bp_location (&loc); | |
12102 | unordered_remove (moribund_locations, ix); | |
12103 | --ix; | |
12104 | } | |
12105 | } | |
348d480f PA |
12106 | } |
12107 | ||
12108 | static void | |
44702360 | 12109 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12110 | { |
348d480f | 12111 | |
492d29ea PA |
12112 | TRY |
12113 | { | |
12114 | update_global_location_list (insert_mode); | |
12115 | } | |
12116 | CATCH (e, RETURN_MASK_ERROR) | |
12117 | { | |
12118 | } | |
12119 | END_CATCH | |
348d480f PA |
12120 | } |
12121 | ||
12122 | /* Clear BKP from a BPS. */ | |
12123 | ||
12124 | static void | |
12125 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12126 | { | |
12127 | bpstat bs; | |
12128 | ||
12129 | for (bs = bps; bs; bs = bs->next) | |
12130 | if (bs->breakpoint_at == bpt) | |
12131 | { | |
12132 | bs->breakpoint_at = NULL; | |
12133 | bs->old_val = NULL; | |
12134 | /* bs->commands will be freed later. */ | |
12135 | } | |
12136 | } | |
12137 | ||
12138 | /* Callback for iterate_over_threads. */ | |
12139 | static int | |
12140 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12141 | { | |
9a3c8263 | 12142 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12143 | |
12144 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12145 | return 0; | |
12146 | } | |
12147 | ||
12148 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12149 | callbacks. */ | |
12150 | ||
12151 | static void | |
12152 | say_where (struct breakpoint *b) | |
12153 | { | |
12154 | struct value_print_options opts; | |
12155 | ||
12156 | get_user_print_options (&opts); | |
12157 | ||
12158 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12159 | single string. */ | |
12160 | if (b->loc == NULL) | |
12161 | { | |
f00aae0f KS |
12162 | /* For pending locations, the output differs slightly based |
12163 | on b->extra_string. If this is non-NULL, it contains either | |
12164 | a condition or dprintf arguments. */ | |
12165 | if (b->extra_string == NULL) | |
12166 | { | |
12167 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12168 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12169 | } |
12170 | else if (b->type == bp_dprintf) | |
12171 | { | |
12172 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12173 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12174 | b->extra_string); |
12175 | } | |
12176 | else | |
12177 | { | |
12178 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12179 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12180 | b->extra_string); |
12181 | } | |
348d480f PA |
12182 | } |
12183 | else | |
12184 | { | |
2f202fde | 12185 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12186 | { |
12187 | printf_filtered (" at "); | |
12188 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12189 | gdb_stdout); | |
12190 | } | |
2f202fde | 12191 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12192 | { |
12193 | /* If there is a single location, we can print the location | |
12194 | more nicely. */ | |
12195 | if (b->loc->next == NULL) | |
12196 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12197 | symtab_to_filename_for_display (b->loc->symtab), |
12198 | b->loc->line_number); | |
f8eba3c6 TT |
12199 | else |
12200 | /* This is not ideal, but each location may have a | |
12201 | different file name, and this at least reflects the | |
12202 | real situation somewhat. */ | |
f00aae0f | 12203 | printf_filtered (": %s.", |
d28cd78a | 12204 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12205 | } |
348d480f PA |
12206 | |
12207 | if (b->loc->next) | |
12208 | { | |
12209 | struct bp_location *loc = b->loc; | |
12210 | int n = 0; | |
12211 | for (; loc; loc = loc->next) | |
12212 | ++n; | |
12213 | printf_filtered (" (%d locations)", n); | |
12214 | } | |
12215 | } | |
12216 | } | |
12217 | ||
348d480f PA |
12218 | /* Default bp_location_ops methods. */ |
12219 | ||
12220 | static void | |
12221 | bp_location_dtor (struct bp_location *self) | |
12222 | { | |
348d480f PA |
12223 | xfree (self->function_name); |
12224 | } | |
12225 | ||
12226 | static const struct bp_location_ops bp_location_ops = | |
12227 | { | |
12228 | bp_location_dtor | |
12229 | }; | |
12230 | ||
c1fc2657 | 12231 | /* Destructor for the breakpoint base class. */ |
348d480f | 12232 | |
c1fc2657 | 12233 | breakpoint::~breakpoint () |
348d480f | 12234 | { |
c1fc2657 SM |
12235 | xfree (this->cond_string); |
12236 | xfree (this->extra_string); | |
12237 | xfree (this->filter); | |
348d480f PA |
12238 | } |
12239 | ||
2060206e PA |
12240 | static struct bp_location * |
12241 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12242 | { |
5625a286 | 12243 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12244 | } |
12245 | ||
2060206e PA |
12246 | static void |
12247 | base_breakpoint_re_set (struct breakpoint *b) | |
12248 | { | |
12249 | /* Nothing to re-set. */ | |
12250 | } | |
12251 | ||
12252 | #define internal_error_pure_virtual_called() \ | |
12253 | gdb_assert_not_reached ("pure virtual function called") | |
12254 | ||
12255 | static int | |
12256 | base_breakpoint_insert_location (struct bp_location *bl) | |
12257 | { | |
12258 | internal_error_pure_virtual_called (); | |
12259 | } | |
12260 | ||
12261 | static int | |
73971819 PA |
12262 | base_breakpoint_remove_location (struct bp_location *bl, |
12263 | enum remove_bp_reason reason) | |
2060206e PA |
12264 | { |
12265 | internal_error_pure_virtual_called (); | |
12266 | } | |
12267 | ||
12268 | static int | |
12269 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12270 | const address_space *aspace, |
09ac7c10 TT |
12271 | CORE_ADDR bp_addr, |
12272 | const struct target_waitstatus *ws) | |
2060206e PA |
12273 | { |
12274 | internal_error_pure_virtual_called (); | |
12275 | } | |
12276 | ||
12277 | static void | |
12278 | base_breakpoint_check_status (bpstat bs) | |
12279 | { | |
12280 | /* Always stop. */ | |
12281 | } | |
12282 | ||
12283 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12284 | errors. */ | |
12285 | ||
12286 | static int | |
12287 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12288 | { | |
12289 | internal_error_pure_virtual_called (); | |
12290 | } | |
12291 | ||
12292 | /* A "resources_needed" breakpoint_ops method that just internal | |
12293 | errors. */ | |
12294 | ||
12295 | static int | |
12296 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12297 | { | |
12298 | internal_error_pure_virtual_called (); | |
12299 | } | |
12300 | ||
12301 | static enum print_stop_action | |
12302 | base_breakpoint_print_it (bpstat bs) | |
12303 | { | |
12304 | internal_error_pure_virtual_called (); | |
12305 | } | |
12306 | ||
12307 | static void | |
12308 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12309 | struct ui_out *uiout) | |
12310 | { | |
12311 | /* nothing */ | |
12312 | } | |
12313 | ||
12314 | static void | |
12315 | base_breakpoint_print_mention (struct breakpoint *b) | |
12316 | { | |
12317 | internal_error_pure_virtual_called (); | |
12318 | } | |
12319 | ||
12320 | static void | |
12321 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12322 | { | |
12323 | internal_error_pure_virtual_called (); | |
12324 | } | |
12325 | ||
983af33b | 12326 | static void |
f00aae0f KS |
12327 | base_breakpoint_create_sals_from_location |
12328 | (const struct event_location *location, | |
12329 | struct linespec_result *canonical, | |
12330 | enum bptype type_wanted) | |
983af33b SDJ |
12331 | { |
12332 | internal_error_pure_virtual_called (); | |
12333 | } | |
12334 | ||
12335 | static void | |
12336 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12337 | struct linespec_result *c, | |
e1e01040 PA |
12338 | gdb::unique_xmalloc_ptr<char> cond_string, |
12339 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12340 | enum bptype type_wanted, |
12341 | enum bpdisp disposition, | |
12342 | int thread, | |
12343 | int task, int ignore_count, | |
12344 | const struct breakpoint_ops *o, | |
12345 | int from_tty, int enabled, | |
44f238bb | 12346 | int internal, unsigned flags) |
983af33b SDJ |
12347 | { |
12348 | internal_error_pure_virtual_called (); | |
12349 | } | |
12350 | ||
6c5b2ebe | 12351 | static std::vector<symtab_and_line> |
f00aae0f KS |
12352 | base_breakpoint_decode_location (struct breakpoint *b, |
12353 | const struct event_location *location, | |
6c5b2ebe | 12354 | struct program_space *search_pspace) |
983af33b SDJ |
12355 | { |
12356 | internal_error_pure_virtual_called (); | |
12357 | } | |
12358 | ||
ab04a2af TT |
12359 | /* The default 'explains_signal' method. */ |
12360 | ||
47591c29 | 12361 | static int |
427cd150 | 12362 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12363 | { |
47591c29 | 12364 | return 1; |
ab04a2af TT |
12365 | } |
12366 | ||
9d6e6e84 HZ |
12367 | /* The default "after_condition_true" method. */ |
12368 | ||
12369 | static void | |
12370 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12371 | { | |
12372 | /* Nothing to do. */ | |
12373 | } | |
12374 | ||
ab04a2af | 12375 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12376 | { |
2060206e PA |
12377 | base_breakpoint_allocate_location, |
12378 | base_breakpoint_re_set, | |
12379 | base_breakpoint_insert_location, | |
12380 | base_breakpoint_remove_location, | |
12381 | base_breakpoint_breakpoint_hit, | |
12382 | base_breakpoint_check_status, | |
12383 | base_breakpoint_resources_needed, | |
12384 | base_breakpoint_works_in_software_mode, | |
12385 | base_breakpoint_print_it, | |
12386 | NULL, | |
12387 | base_breakpoint_print_one_detail, | |
12388 | base_breakpoint_print_mention, | |
983af33b | 12389 | base_breakpoint_print_recreate, |
5f700d83 | 12390 | base_breakpoint_create_sals_from_location, |
983af33b | 12391 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12392 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12393 | base_breakpoint_explains_signal, |
12394 | base_breakpoint_after_condition_true, | |
2060206e PA |
12395 | }; |
12396 | ||
12397 | /* Default breakpoint_ops methods. */ | |
12398 | ||
12399 | static void | |
348d480f PA |
12400 | bkpt_re_set (struct breakpoint *b) |
12401 | { | |
06edf0c0 | 12402 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12403 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12404 | { |
f00aae0f | 12405 | /* Anything without a location can't be re-set. */ |
348d480f | 12406 | delete_breakpoint (b); |
06edf0c0 | 12407 | return; |
348d480f | 12408 | } |
06edf0c0 PA |
12409 | |
12410 | breakpoint_re_set_default (b); | |
348d480f PA |
12411 | } |
12412 | ||
2060206e | 12413 | static int |
348d480f PA |
12414 | bkpt_insert_location (struct bp_location *bl) |
12415 | { | |
cd6c3b4f YQ |
12416 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12417 | ||
579c6ad9 | 12418 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12419 | bl->target_info.placed_address = addr; |
12420 | ||
348d480f | 12421 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12422 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12423 | else |
7c16b83e | 12424 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12425 | } |
12426 | ||
2060206e | 12427 | static int |
73971819 | 12428 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12429 | { |
12430 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12431 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12432 | else | |
73971819 | 12433 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12434 | } |
12435 | ||
2060206e | 12436 | static int |
348d480f | 12437 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12438 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12439 | const struct target_waitstatus *ws) |
348d480f | 12440 | { |
09ac7c10 | 12441 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12442 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12443 | return 0; |
12444 | ||
348d480f PA |
12445 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12446 | aspace, bp_addr)) | |
12447 | return 0; | |
12448 | ||
12449 | if (overlay_debugging /* unmapped overlay section */ | |
12450 | && section_is_overlay (bl->section) | |
12451 | && !section_is_mapped (bl->section)) | |
12452 | return 0; | |
12453 | ||
12454 | return 1; | |
12455 | } | |
12456 | ||
cd1608cc PA |
12457 | static int |
12458 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12459 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12460 | const struct target_waitstatus *ws) |
12461 | { | |
12462 | if (dprintf_style == dprintf_style_agent | |
12463 | && target_can_run_breakpoint_commands ()) | |
12464 | { | |
12465 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12466 | for this address it must be for a breakpoint that happens to | |
12467 | be set at the same address. */ | |
12468 | return 0; | |
12469 | } | |
12470 | ||
12471 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12472 | } | |
12473 | ||
2060206e | 12474 | static int |
348d480f PA |
12475 | bkpt_resources_needed (const struct bp_location *bl) |
12476 | { | |
12477 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12478 | ||
12479 | return 1; | |
12480 | } | |
12481 | ||
2060206e | 12482 | static enum print_stop_action |
348d480f PA |
12483 | bkpt_print_it (bpstat bs) |
12484 | { | |
348d480f PA |
12485 | struct breakpoint *b; |
12486 | const struct bp_location *bl; | |
001c8c33 | 12487 | int bp_temp; |
79a45e25 | 12488 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12489 | |
12490 | gdb_assert (bs->bp_location_at != NULL); | |
12491 | ||
12492 | bl = bs->bp_location_at; | |
12493 | b = bs->breakpoint_at; | |
12494 | ||
001c8c33 PA |
12495 | bp_temp = b->disposition == disp_del; |
12496 | if (bl->address != bl->requested_address) | |
12497 | breakpoint_adjustment_warning (bl->requested_address, | |
12498 | bl->address, | |
12499 | b->number, 1); | |
12500 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12501 | maybe_print_thread_hit_breakpoint (uiout); |
12502 | ||
001c8c33 | 12503 | if (bp_temp) |
112e8700 | 12504 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12505 | else |
112e8700 SM |
12506 | uiout->text ("Breakpoint "); |
12507 | if (uiout->is_mi_like_p ()) | |
348d480f | 12508 | { |
112e8700 | 12509 | uiout->field_string ("reason", |
001c8c33 | 12510 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12511 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12512 | } |
112e8700 SM |
12513 | uiout->field_int ("bkptno", b->number); |
12514 | uiout->text (", "); | |
06edf0c0 | 12515 | |
001c8c33 | 12516 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12517 | } |
12518 | ||
2060206e | 12519 | static void |
06edf0c0 PA |
12520 | bkpt_print_mention (struct breakpoint *b) |
12521 | { | |
112e8700 | 12522 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12523 | return; |
12524 | ||
12525 | switch (b->type) | |
12526 | { | |
12527 | case bp_breakpoint: | |
12528 | case bp_gnu_ifunc_resolver: | |
12529 | if (b->disposition == disp_del) | |
12530 | printf_filtered (_("Temporary breakpoint")); | |
12531 | else | |
12532 | printf_filtered (_("Breakpoint")); | |
12533 | printf_filtered (_(" %d"), b->number); | |
12534 | if (b->type == bp_gnu_ifunc_resolver) | |
12535 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12536 | break; | |
12537 | case bp_hardware_breakpoint: | |
12538 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12539 | break; | |
e7e0cddf SS |
12540 | case bp_dprintf: |
12541 | printf_filtered (_("Dprintf %d"), b->number); | |
12542 | break; | |
06edf0c0 PA |
12543 | } |
12544 | ||
12545 | say_where (b); | |
12546 | } | |
12547 | ||
2060206e | 12548 | static void |
06edf0c0 PA |
12549 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12550 | { | |
12551 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12552 | fprintf_unfiltered (fp, "tbreak"); | |
12553 | else if (tp->type == bp_breakpoint) | |
12554 | fprintf_unfiltered (fp, "break"); | |
12555 | else if (tp->type == bp_hardware_breakpoint | |
12556 | && tp->disposition == disp_del) | |
12557 | fprintf_unfiltered (fp, "thbreak"); | |
12558 | else if (tp->type == bp_hardware_breakpoint) | |
12559 | fprintf_unfiltered (fp, "hbreak"); | |
12560 | else | |
12561 | internal_error (__FILE__, __LINE__, | |
12562 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12563 | ||
f00aae0f | 12564 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12565 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12566 | |
12567 | /* Print out extra_string if this breakpoint is pending. It might | |
12568 | contain, for example, conditions that were set by the user. */ | |
12569 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12570 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12571 | ||
dd11a36c | 12572 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12573 | } |
12574 | ||
983af33b | 12575 | static void |
f00aae0f KS |
12576 | bkpt_create_sals_from_location (const struct event_location *location, |
12577 | struct linespec_result *canonical, | |
12578 | enum bptype type_wanted) | |
983af33b | 12579 | { |
f00aae0f | 12580 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12581 | } |
12582 | ||
12583 | static void | |
12584 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12585 | struct linespec_result *canonical, | |
e1e01040 PA |
12586 | gdb::unique_xmalloc_ptr<char> cond_string, |
12587 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12588 | enum bptype type_wanted, |
12589 | enum bpdisp disposition, | |
12590 | int thread, | |
12591 | int task, int ignore_count, | |
12592 | const struct breakpoint_ops *ops, | |
12593 | int from_tty, int enabled, | |
44f238bb | 12594 | int internal, unsigned flags) |
983af33b | 12595 | { |
023fa29b | 12596 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12597 | std::move (cond_string), |
12598 | std::move (extra_string), | |
e7e0cddf | 12599 | type_wanted, |
983af33b SDJ |
12600 | disposition, thread, task, |
12601 | ignore_count, ops, from_tty, | |
44f238bb | 12602 | enabled, internal, flags); |
983af33b SDJ |
12603 | } |
12604 | ||
6c5b2ebe | 12605 | static std::vector<symtab_and_line> |
f00aae0f KS |
12606 | bkpt_decode_location (struct breakpoint *b, |
12607 | const struct event_location *location, | |
6c5b2ebe | 12608 | struct program_space *search_pspace) |
983af33b | 12609 | { |
6c5b2ebe | 12610 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12611 | } |
12612 | ||
06edf0c0 PA |
12613 | /* Virtual table for internal breakpoints. */ |
12614 | ||
12615 | static void | |
12616 | internal_bkpt_re_set (struct breakpoint *b) | |
12617 | { | |
12618 | switch (b->type) | |
12619 | { | |
12620 | /* Delete overlay event and longjmp master breakpoints; they | |
12621 | will be reset later by breakpoint_re_set. */ | |
12622 | case bp_overlay_event: | |
12623 | case bp_longjmp_master: | |
12624 | case bp_std_terminate_master: | |
12625 | case bp_exception_master: | |
12626 | delete_breakpoint (b); | |
12627 | break; | |
12628 | ||
12629 | /* This breakpoint is special, it's set up when the inferior | |
12630 | starts and we really don't want to touch it. */ | |
12631 | case bp_shlib_event: | |
12632 | ||
12633 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12634 | it is set up, we do not want to touch it. */ | |
12635 | case bp_thread_event: | |
12636 | break; | |
12637 | } | |
12638 | } | |
12639 | ||
12640 | static void | |
12641 | internal_bkpt_check_status (bpstat bs) | |
12642 | { | |
a9b3a50f PA |
12643 | if (bs->breakpoint_at->type == bp_shlib_event) |
12644 | { | |
12645 | /* If requested, stop when the dynamic linker notifies GDB of | |
12646 | events. This allows the user to get control and place | |
12647 | breakpoints in initializer routines for dynamically loaded | |
12648 | objects (among other things). */ | |
12649 | bs->stop = stop_on_solib_events; | |
12650 | bs->print = stop_on_solib_events; | |
12651 | } | |
12652 | else | |
12653 | bs->stop = 0; | |
06edf0c0 PA |
12654 | } |
12655 | ||
12656 | static enum print_stop_action | |
12657 | internal_bkpt_print_it (bpstat bs) | |
12658 | { | |
06edf0c0 | 12659 | struct breakpoint *b; |
06edf0c0 | 12660 | |
06edf0c0 PA |
12661 | b = bs->breakpoint_at; |
12662 | ||
06edf0c0 PA |
12663 | switch (b->type) |
12664 | { | |
348d480f PA |
12665 | case bp_shlib_event: |
12666 | /* Did we stop because the user set the stop_on_solib_events | |
12667 | variable? (If so, we report this as a generic, "Stopped due | |
12668 | to shlib event" message.) */ | |
edcc5120 | 12669 | print_solib_event (0); |
348d480f PA |
12670 | break; |
12671 | ||
12672 | case bp_thread_event: | |
12673 | /* Not sure how we will get here. | |
12674 | GDB should not stop for these breakpoints. */ | |
12675 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12676 | break; |
12677 | ||
12678 | case bp_overlay_event: | |
12679 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12680 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12681 | break; |
12682 | ||
12683 | case bp_longjmp_master: | |
12684 | /* These should never be enabled. */ | |
12685 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12686 | break; |
12687 | ||
12688 | case bp_std_terminate_master: | |
12689 | /* These should never be enabled. */ | |
12690 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12691 | "gdb should not stop!\n")); | |
348d480f PA |
12692 | break; |
12693 | ||
12694 | case bp_exception_master: | |
12695 | /* These should never be enabled. */ | |
12696 | printf_filtered (_("Exception Master Breakpoint: " | |
12697 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12698 | break; |
12699 | } | |
12700 | ||
001c8c33 | 12701 | return PRINT_NOTHING; |
06edf0c0 PA |
12702 | } |
12703 | ||
12704 | static void | |
12705 | internal_bkpt_print_mention (struct breakpoint *b) | |
12706 | { | |
12707 | /* Nothing to mention. These breakpoints are internal. */ | |
12708 | } | |
12709 | ||
06edf0c0 PA |
12710 | /* Virtual table for momentary breakpoints */ |
12711 | ||
12712 | static void | |
12713 | momentary_bkpt_re_set (struct breakpoint *b) | |
12714 | { | |
12715 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12716 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12717 | Otherwise these should have been blown away via the cleanup chain |
12718 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12719 | } | |
12720 | ||
12721 | static void | |
12722 | momentary_bkpt_check_status (bpstat bs) | |
12723 | { | |
12724 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12725 | } | |
12726 | ||
12727 | static enum print_stop_action | |
12728 | momentary_bkpt_print_it (bpstat bs) | |
12729 | { | |
001c8c33 | 12730 | return PRINT_UNKNOWN; |
348d480f PA |
12731 | } |
12732 | ||
06edf0c0 PA |
12733 | static void |
12734 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12735 | { |
06edf0c0 | 12736 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12737 | } |
12738 | ||
e2e4d78b JK |
12739 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12740 | ||
12741 | It gets cleared already on the removal of the first one of such placed | |
12742 | breakpoints. This is OK as they get all removed altogether. */ | |
12743 | ||
c1fc2657 | 12744 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12745 | { |
c1fc2657 | 12746 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12747 | |
c1fc2657 | 12748 | if (tp != NULL) |
e2e4d78b | 12749 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12750 | } |
12751 | ||
55aa24fb SDJ |
12752 | /* Specific methods for probe breakpoints. */ |
12753 | ||
12754 | static int | |
12755 | bkpt_probe_insert_location (struct bp_location *bl) | |
12756 | { | |
12757 | int v = bkpt_insert_location (bl); | |
12758 | ||
12759 | if (v == 0) | |
12760 | { | |
12761 | /* The insertion was successful, now let's set the probe's semaphore | |
12762 | if needed. */ | |
935676c9 | 12763 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12764 | } |
12765 | ||
12766 | return v; | |
12767 | } | |
12768 | ||
12769 | static int | |
73971819 PA |
12770 | bkpt_probe_remove_location (struct bp_location *bl, |
12771 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12772 | { |
12773 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12774 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12775 | |
73971819 | 12776 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12777 | } |
12778 | ||
12779 | static void | |
f00aae0f | 12780 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12781 | struct linespec_result *canonical, |
f00aae0f | 12782 | enum bptype type_wanted) |
55aa24fb SDJ |
12783 | { |
12784 | struct linespec_sals lsal; | |
12785 | ||
c2f4122d | 12786 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12787 | lsal.canonical |
12788 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12789 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12790 | } |
12791 | ||
6c5b2ebe | 12792 | static std::vector<symtab_and_line> |
f00aae0f KS |
12793 | bkpt_probe_decode_location (struct breakpoint *b, |
12794 | const struct event_location *location, | |
6c5b2ebe | 12795 | struct program_space *search_pspace) |
55aa24fb | 12796 | { |
6c5b2ebe PA |
12797 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12798 | if (sals.empty ()) | |
55aa24fb | 12799 | error (_("probe not found")); |
6c5b2ebe | 12800 | return sals; |
55aa24fb SDJ |
12801 | } |
12802 | ||
348d480f | 12803 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12804 | |
348d480f PA |
12805 | static void |
12806 | tracepoint_re_set (struct breakpoint *b) | |
12807 | { | |
12808 | breakpoint_re_set_default (b); | |
12809 | } | |
876fa593 | 12810 | |
348d480f PA |
12811 | static int |
12812 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12813 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12814 | const struct target_waitstatus *ws) |
348d480f PA |
12815 | { |
12816 | /* By definition, the inferior does not report stops at | |
12817 | tracepoints. */ | |
12818 | return 0; | |
74960c60 VP |
12819 | } |
12820 | ||
12821 | static void | |
348d480f PA |
12822 | tracepoint_print_one_detail (const struct breakpoint *self, |
12823 | struct ui_out *uiout) | |
74960c60 | 12824 | { |
d9b3f62e | 12825 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12826 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12827 | { |
12828 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12829 | |
112e8700 SM |
12830 | uiout->text ("\tmarker id is "); |
12831 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12832 | tp->static_trace_marker_id); |
112e8700 | 12833 | uiout->text ("\n"); |
348d480f | 12834 | } |
0d381245 VP |
12835 | } |
12836 | ||
a474d7c2 | 12837 | static void |
348d480f | 12838 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12839 | { |
112e8700 | 12840 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12841 | return; |
cc59ec59 | 12842 | |
348d480f PA |
12843 | switch (b->type) |
12844 | { | |
12845 | case bp_tracepoint: | |
12846 | printf_filtered (_("Tracepoint")); | |
12847 | printf_filtered (_(" %d"), b->number); | |
12848 | break; | |
12849 | case bp_fast_tracepoint: | |
12850 | printf_filtered (_("Fast tracepoint")); | |
12851 | printf_filtered (_(" %d"), b->number); | |
12852 | break; | |
12853 | case bp_static_tracepoint: | |
12854 | printf_filtered (_("Static tracepoint")); | |
12855 | printf_filtered (_(" %d"), b->number); | |
12856 | break; | |
12857 | default: | |
12858 | internal_error (__FILE__, __LINE__, | |
12859 | _("unhandled tracepoint type %d"), (int) b->type); | |
12860 | } | |
12861 | ||
12862 | say_where (b); | |
a474d7c2 PA |
12863 | } |
12864 | ||
348d480f | 12865 | static void |
d9b3f62e | 12866 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12867 | { |
d9b3f62e PA |
12868 | struct tracepoint *tp = (struct tracepoint *) self; |
12869 | ||
12870 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12871 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12872 | else if (self->type == bp_static_tracepoint) |
348d480f | 12873 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12874 | else if (self->type == bp_tracepoint) |
348d480f PA |
12875 | fprintf_unfiltered (fp, "trace"); |
12876 | else | |
12877 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12878 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12879 | |
f00aae0f | 12880 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12881 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12882 | print_recreate_thread (self, fp); |
12883 | ||
12884 | if (tp->pass_count) | |
12885 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12886 | } |
12887 | ||
983af33b | 12888 | static void |
f00aae0f KS |
12889 | tracepoint_create_sals_from_location (const struct event_location *location, |
12890 | struct linespec_result *canonical, | |
12891 | enum bptype type_wanted) | |
983af33b | 12892 | { |
f00aae0f | 12893 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12894 | } |
12895 | ||
12896 | static void | |
12897 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12898 | struct linespec_result *canonical, | |
e1e01040 PA |
12899 | gdb::unique_xmalloc_ptr<char> cond_string, |
12900 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12901 | enum bptype type_wanted, |
12902 | enum bpdisp disposition, | |
12903 | int thread, | |
12904 | int task, int ignore_count, | |
12905 | const struct breakpoint_ops *ops, | |
12906 | int from_tty, int enabled, | |
44f238bb | 12907 | int internal, unsigned flags) |
983af33b | 12908 | { |
023fa29b | 12909 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12910 | std::move (cond_string), |
12911 | std::move (extra_string), | |
e7e0cddf | 12912 | type_wanted, |
983af33b SDJ |
12913 | disposition, thread, task, |
12914 | ignore_count, ops, from_tty, | |
44f238bb | 12915 | enabled, internal, flags); |
983af33b SDJ |
12916 | } |
12917 | ||
6c5b2ebe | 12918 | static std::vector<symtab_and_line> |
f00aae0f KS |
12919 | tracepoint_decode_location (struct breakpoint *b, |
12920 | const struct event_location *location, | |
6c5b2ebe | 12921 | struct program_space *search_pspace) |
983af33b | 12922 | { |
6c5b2ebe | 12923 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12924 | } |
12925 | ||
2060206e | 12926 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12927 | |
55aa24fb SDJ |
12928 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12929 | static probe. */ | |
12930 | ||
12931 | static void | |
f00aae0f KS |
12932 | tracepoint_probe_create_sals_from_location |
12933 | (const struct event_location *location, | |
12934 | struct linespec_result *canonical, | |
12935 | enum bptype type_wanted) | |
55aa24fb SDJ |
12936 | { |
12937 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12938 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12939 | } |
12940 | ||
6c5b2ebe | 12941 | static std::vector<symtab_and_line> |
f00aae0f KS |
12942 | tracepoint_probe_decode_location (struct breakpoint *b, |
12943 | const struct event_location *location, | |
6c5b2ebe | 12944 | struct program_space *search_pspace) |
55aa24fb SDJ |
12945 | { |
12946 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12947 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12948 | } |
12949 | ||
12950 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12951 | ||
5c2b4418 HZ |
12952 | /* Dprintf breakpoint_ops methods. */ |
12953 | ||
12954 | static void | |
12955 | dprintf_re_set (struct breakpoint *b) | |
12956 | { | |
12957 | breakpoint_re_set_default (b); | |
12958 | ||
f00aae0f KS |
12959 | /* extra_string should never be non-NULL for dprintf. */ |
12960 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12961 | |
12962 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12963 | 2 - create a dprintf, which resolves fine. | |
12964 | 3 - disconnect from target 1 | |
12965 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12966 | ||
12967 | After steps #3/#4, you'll want the dprintf command list to | |
12968 | be updated, because target 1 and 2 may well return different | |
12969 | answers for target_can_run_breakpoint_commands(). | |
12970 | Given absence of finer grained resetting, we get to do | |
12971 | it all the time. */ | |
12972 | if (b->extra_string != NULL) | |
12973 | update_dprintf_command_list (b); | |
12974 | } | |
12975 | ||
2d9442cc HZ |
12976 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12977 | ||
12978 | static void | |
12979 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12980 | { | |
f00aae0f | 12981 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12982 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12983 | tp->extra_string); |
12984 | print_recreate_thread (tp, fp); | |
12985 | } | |
12986 | ||
9d6e6e84 HZ |
12987 | /* Implement the "after_condition_true" breakpoint_ops method for |
12988 | dprintf. | |
12989 | ||
12990 | dprintf's are implemented with regular commands in their command | |
12991 | list, but we run the commands here instead of before presenting the | |
12992 | stop to the user, as dprintf's don't actually cause a stop. This | |
12993 | also makes it so that the commands of multiple dprintfs at the same | |
12994 | address are all handled. */ | |
12995 | ||
12996 | static void | |
12997 | dprintf_after_condition_true (struct bpstats *bs) | |
12998 | { | |
04afa70c | 12999 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13000 | struct bpstats *tmp_bs_p = &tmp_bs; |
13001 | ||
13002 | /* dprintf's never cause a stop. This wasn't set in the | |
13003 | check_status hook instead because that would make the dprintf's | |
13004 | condition not be evaluated. */ | |
13005 | bs->stop = 0; | |
13006 | ||
13007 | /* Run the command list here. Take ownership of it instead of | |
13008 | copying. We never want these commands to run later in | |
13009 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13010 | be set at same address as this dprintf, or even if running the | |
13011 | commands here throws. */ | |
13012 | tmp_bs.commands = bs->commands; | |
13013 | bs->commands = NULL; | |
9d6e6e84 HZ |
13014 | |
13015 | bpstat_do_actions_1 (&tmp_bs_p); | |
13016 | ||
13017 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13018 | bpstat_do_actions_1 may return early without processing the whole | |
13019 | list. */ | |
9d6e6e84 HZ |
13020 | } |
13021 | ||
983af33b SDJ |
13022 | /* The breakpoint_ops structure to be used on static tracepoints with |
13023 | markers (`-m'). */ | |
13024 | ||
13025 | static void | |
f00aae0f | 13026 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13027 | struct linespec_result *canonical, |
f00aae0f | 13028 | enum bptype type_wanted) |
983af33b SDJ |
13029 | { |
13030 | struct linespec_sals lsal; | |
f00aae0f | 13031 | const char *arg_start, *arg; |
983af33b | 13032 | |
a20714ff | 13033 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13034 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13035 | |
f2fc3015 TT |
13036 | std::string str (arg_start, arg - arg_start); |
13037 | const char *ptr = str.c_str (); | |
a20714ff PA |
13038 | canonical->location |
13039 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13040 | |
8e9e35b1 TT |
13041 | lsal.canonical |
13042 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13043 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13044 | } |
13045 | ||
13046 | static void | |
13047 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13048 | struct linespec_result *canonical, | |
e1e01040 PA |
13049 | gdb::unique_xmalloc_ptr<char> cond_string, |
13050 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13051 | enum bptype type_wanted, |
13052 | enum bpdisp disposition, | |
13053 | int thread, | |
13054 | int task, int ignore_count, | |
13055 | const struct breakpoint_ops *ops, | |
13056 | int from_tty, int enabled, | |
44f238bb | 13057 | int internal, unsigned flags) |
983af33b | 13058 | { |
6c5b2ebe | 13059 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13060 | |
13061 | /* If the user is creating a static tracepoint by marker id | |
13062 | (strace -m MARKER_ID), then store the sals index, so that | |
13063 | breakpoint_re_set can try to match up which of the newly | |
13064 | found markers corresponds to this one, and, don't try to | |
13065 | expand multiple locations for each sal, given than SALS | |
13066 | already should contain all sals for MARKER_ID. */ | |
13067 | ||
6c5b2ebe | 13068 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13069 | { |
6c5b2ebe PA |
13070 | event_location_up location |
13071 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13072 | |
b270e6f9 | 13073 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13074 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13075 | std::move (location), NULL, |
e1e01040 PA |
13076 | std::move (cond_string), |
13077 | std::move (extra_string), | |
e7e0cddf | 13078 | type_wanted, disposition, |
983af33b | 13079 | thread, task, ignore_count, ops, |
44f238bb | 13080 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13081 | canonical->special_display); |
13082 | /* Given that its possible to have multiple markers with | |
13083 | the same string id, if the user is creating a static | |
13084 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13085 | store the sals index, so that breakpoint_re_set can | |
13086 | try to match up which of the newly found markers | |
13087 | corresponds to this one */ | |
13088 | tp->static_trace_marker_id_idx = i; | |
13089 | ||
b270e6f9 | 13090 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13091 | } |
13092 | } | |
13093 | ||
6c5b2ebe | 13094 | static std::vector<symtab_and_line> |
f00aae0f KS |
13095 | strace_marker_decode_location (struct breakpoint *b, |
13096 | const struct event_location *location, | |
6c5b2ebe | 13097 | struct program_space *search_pspace) |
983af33b SDJ |
13098 | { |
13099 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13100 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13101 | |
6c5b2ebe PA |
13102 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13103 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13104 | { |
6c5b2ebe PA |
13105 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13106 | sals.resize (1); | |
13107 | return sals; | |
983af33b SDJ |
13108 | } |
13109 | else | |
5d9310c4 | 13110 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13111 | } |
13112 | ||
13113 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13114 | ||
13115 | static int | |
13116 | strace_marker_p (struct breakpoint *b) | |
13117 | { | |
13118 | return b->ops == &strace_marker_breakpoint_ops; | |
13119 | } | |
13120 | ||
53a5351d | 13121 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13122 | structures. */ |
c906108c SS |
13123 | |
13124 | void | |
fba45db2 | 13125 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13126 | { |
52f0bd74 | 13127 | struct breakpoint *b; |
c906108c | 13128 | |
8a3fe4f8 | 13129 | gdb_assert (bpt != NULL); |
c906108c | 13130 | |
4a64f543 MS |
13131 | /* Has this bp already been deleted? This can happen because |
13132 | multiple lists can hold pointers to bp's. bpstat lists are | |
13133 | especial culprits. | |
13134 | ||
13135 | One example of this happening is a watchpoint's scope bp. When | |
13136 | the scope bp triggers, we notice that the watchpoint is out of | |
13137 | scope, and delete it. We also delete its scope bp. But the | |
13138 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13139 | That bpstat is then checked for auto-deleting bp's, which are | |
13140 | deleted. | |
13141 | ||
13142 | A real solution to this problem might involve reference counts in | |
13143 | bp's, and/or giving them pointers back to their referencing | |
13144 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13145 | storage when no more references were extent. A cheaper bandaid | |
13146 | was chosen. */ | |
c906108c SS |
13147 | if (bpt->type == bp_none) |
13148 | return; | |
13149 | ||
4a64f543 MS |
13150 | /* At least avoid this stale reference until the reference counting |
13151 | of breakpoints gets resolved. */ | |
d0fb5eae | 13152 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13153 | { |
d0fb5eae | 13154 | struct breakpoint *related; |
3a5c3e22 | 13155 | struct watchpoint *w; |
d0fb5eae JK |
13156 | |
13157 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13158 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13159 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13160 | w = (struct watchpoint *) bpt; |
13161 | else | |
13162 | w = NULL; | |
13163 | if (w != NULL) | |
13164 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13165 | |
13166 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13167 | for (related = bpt; related->related_breakpoint != bpt; | |
13168 | related = related->related_breakpoint); | |
13169 | related->related_breakpoint = bpt->related_breakpoint; | |
13170 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13171 | } |
13172 | ||
a9634178 TJB |
13173 | /* watch_command_1 creates a watchpoint but only sets its number if |
13174 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13175 | a problem in that process, we'll be asked to delete the half-created | |
13176 | watchpoint. In that case, don't announce the deletion. */ | |
13177 | if (bpt->number) | |
76727919 | 13178 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13179 | |
c906108c SS |
13180 | if (breakpoint_chain == bpt) |
13181 | breakpoint_chain = bpt->next; | |
13182 | ||
c906108c SS |
13183 | ALL_BREAKPOINTS (b) |
13184 | if (b->next == bpt) | |
c5aa993b JM |
13185 | { |
13186 | b->next = bpt->next; | |
13187 | break; | |
13188 | } | |
c906108c | 13189 | |
f431efe5 PA |
13190 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13191 | been freed. */ | |
13192 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13193 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13194 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13195 | commands are associated with the bpstat; if we remove it here, | |
13196 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13197 | event-top.c won't do anything, and temporary breakpoints with | |
13198 | commands won't work. */ | |
13199 | ||
13200 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13201 | ||
4a64f543 MS |
13202 | /* Now that breakpoint is removed from breakpoint list, update the |
13203 | global location list. This will remove locations that used to | |
13204 | belong to this breakpoint. Do this before freeing the breakpoint | |
13205 | itself, since remove_breakpoint looks at location's owner. It | |
13206 | might be better design to have location completely | |
13207 | self-contained, but it's not the case now. */ | |
44702360 | 13208 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13209 | |
4a64f543 MS |
13210 | /* On the chance that someone will soon try again to delete this |
13211 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13212 | bpt->type = bp_none; |
4d01a485 | 13213 | delete bpt; |
c906108c SS |
13214 | } |
13215 | ||
51be5b68 PA |
13216 | /* Iterator function to call a user-provided callback function once |
13217 | for each of B and its related breakpoints. */ | |
13218 | ||
13219 | static void | |
13220 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13221 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13222 | { |
13223 | struct breakpoint *related; | |
13224 | ||
13225 | related = b; | |
13226 | do | |
13227 | { | |
13228 | struct breakpoint *next; | |
13229 | ||
13230 | /* FUNCTION may delete RELATED. */ | |
13231 | next = related->related_breakpoint; | |
13232 | ||
13233 | if (next == related) | |
13234 | { | |
13235 | /* RELATED is the last ring entry. */ | |
48649e1b | 13236 | function (related); |
51be5b68 PA |
13237 | |
13238 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13239 | B. There's nothing left to do anyway, so just break | |
13240 | out. */ | |
13241 | break; | |
13242 | } | |
13243 | else | |
48649e1b | 13244 | function (related); |
51be5b68 PA |
13245 | |
13246 | related = next; | |
13247 | } | |
13248 | while (related != b); | |
13249 | } | |
95a42b64 | 13250 | |
4495129a | 13251 | static void |
981a3fb3 | 13252 | delete_command (const char *arg, int from_tty) |
c906108c | 13253 | { |
35df4500 | 13254 | struct breakpoint *b, *b_tmp; |
c906108c | 13255 | |
ea9365bb TT |
13256 | dont_repeat (); |
13257 | ||
c906108c SS |
13258 | if (arg == 0) |
13259 | { | |
13260 | int breaks_to_delete = 0; | |
13261 | ||
46c6471b PA |
13262 | /* Delete all breakpoints if no argument. Do not delete |
13263 | internal breakpoints, these have to be deleted with an | |
13264 | explicit breakpoint number argument. */ | |
c5aa993b | 13265 | ALL_BREAKPOINTS (b) |
46c6471b | 13266 | if (user_breakpoint_p (b)) |
973d738b DJ |
13267 | { |
13268 | breaks_to_delete = 1; | |
13269 | break; | |
13270 | } | |
c906108c SS |
13271 | |
13272 | /* Ask user only if there are some breakpoints to delete. */ | |
13273 | if (!from_tty | |
e2e0b3e5 | 13274 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13275 | { |
35df4500 | 13276 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13277 | if (user_breakpoint_p (b)) |
c5aa993b | 13278 | delete_breakpoint (b); |
c906108c SS |
13279 | } |
13280 | } | |
13281 | else | |
48649e1b | 13282 | map_breakpoint_numbers |
b926417a | 13283 | (arg, [&] (breakpoint *br) |
48649e1b | 13284 | { |
b926417a | 13285 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13286 | }); |
c906108c SS |
13287 | } |
13288 | ||
c2f4122d PA |
13289 | /* Return true if all locations of B bound to PSPACE are pending. If |
13290 | PSPACE is NULL, all locations of all program spaces are | |
13291 | considered. */ | |
13292 | ||
0d381245 | 13293 | static int |
c2f4122d | 13294 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13295 | { |
c2f4122d PA |
13296 | struct bp_location *loc; |
13297 | ||
13298 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13299 | if ((pspace == NULL | |
13300 | || loc->pspace == pspace) | |
13301 | && !loc->shlib_disabled | |
8645ff69 | 13302 | && !loc->pspace->executing_startup) |
0d381245 VP |
13303 | return 0; |
13304 | return 1; | |
fe3f5fa8 VP |
13305 | } |
13306 | ||
776592bf DE |
13307 | /* Subroutine of update_breakpoint_locations to simplify it. |
13308 | Return non-zero if multiple fns in list LOC have the same name. | |
13309 | Null names are ignored. */ | |
13310 | ||
13311 | static int | |
13312 | ambiguous_names_p (struct bp_location *loc) | |
13313 | { | |
13314 | struct bp_location *l; | |
459a2e4c TT |
13315 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13316 | xcalloc, xfree); | |
776592bf DE |
13317 | |
13318 | for (l = loc; l != NULL; l = l->next) | |
13319 | { | |
13320 | const char **slot; | |
13321 | const char *name = l->function_name; | |
13322 | ||
13323 | /* Allow for some names to be NULL, ignore them. */ | |
13324 | if (name == NULL) | |
13325 | continue; | |
13326 | ||
13327 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13328 | INSERT); | |
4a64f543 MS |
13329 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13330 | returns NULL. */ | |
776592bf DE |
13331 | if (*slot != NULL) |
13332 | { | |
13333 | htab_delete (htab); | |
13334 | return 1; | |
13335 | } | |
13336 | *slot = name; | |
13337 | } | |
13338 | ||
13339 | htab_delete (htab); | |
13340 | return 0; | |
13341 | } | |
13342 | ||
0fb4aa4b PA |
13343 | /* When symbols change, it probably means the sources changed as well, |
13344 | and it might mean the static tracepoint markers are no longer at | |
13345 | the same address or line numbers they used to be at last we | |
13346 | checked. Losing your static tracepoints whenever you rebuild is | |
13347 | undesirable. This function tries to resync/rematch gdb static | |
13348 | tracepoints with the markers on the target, for static tracepoints | |
13349 | that have not been set by marker id. Static tracepoint that have | |
13350 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13351 | The heuristic is: | |
13352 | ||
13353 | 1) For a tracepoint set at a specific address, look for a marker at | |
13354 | the old PC. If one is found there, assume to be the same marker. | |
13355 | If the name / string id of the marker found is different from the | |
13356 | previous known name, assume that means the user renamed the marker | |
13357 | in the sources, and output a warning. | |
13358 | ||
13359 | 2) For a tracepoint set at a given line number, look for a marker | |
13360 | at the new address of the old line number. If one is found there, | |
13361 | assume to be the same marker. If the name / string id of the | |
13362 | marker found is different from the previous known name, assume that | |
13363 | means the user renamed the marker in the sources, and output a | |
13364 | warning. | |
13365 | ||
13366 | 3) If a marker is no longer found at the same address or line, it | |
13367 | may mean the marker no longer exists. But it may also just mean | |
13368 | the code changed a bit. Maybe the user added a few lines of code | |
13369 | that made the marker move up or down (in line number terms). Ask | |
13370 | the target for info about the marker with the string id as we knew | |
13371 | it. If found, update line number and address in the matching | |
13372 | static tracepoint. This will get confused if there's more than one | |
13373 | marker with the same ID (possible in UST, although unadvised | |
13374 | precisely because it confuses tools). */ | |
13375 | ||
13376 | static struct symtab_and_line | |
13377 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13378 | { | |
d9b3f62e | 13379 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13380 | struct static_tracepoint_marker marker; |
13381 | CORE_ADDR pc; | |
0fb4aa4b PA |
13382 | |
13383 | pc = sal.pc; | |
13384 | if (sal.line) | |
13385 | find_line_pc (sal.symtab, sal.line, &pc); | |
13386 | ||
13387 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13388 | { | |
5d9310c4 | 13389 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13390 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13391 | b->number, tp->static_trace_marker_id.c_str (), |
13392 | marker.str_id.c_str ()); | |
0fb4aa4b | 13393 | |
5d9310c4 | 13394 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13395 | |
13396 | return sal; | |
13397 | } | |
13398 | ||
13399 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13400 | by string ID. */ | |
13401 | if (!sal.explicit_pc | |
13402 | && sal.line != 0 | |
13403 | && sal.symtab != NULL | |
5d9310c4 | 13404 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13405 | { |
5d9310c4 SM |
13406 | std::vector<static_tracepoint_marker> markers |
13407 | = target_static_tracepoint_markers_by_strid | |
13408 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13409 | |
5d9310c4 | 13410 | if (!markers.empty ()) |
0fb4aa4b | 13411 | { |
0fb4aa4b | 13412 | struct symbol *sym; |
80e1d417 | 13413 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13414 | struct ui_out *uiout = current_uiout; |
67994074 | 13415 | struct explicit_location explicit_loc; |
0fb4aa4b | 13416 | |
5d9310c4 | 13417 | tpmarker = &markers[0]; |
0fb4aa4b | 13418 | |
5d9310c4 | 13419 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13420 | |
13421 | warning (_("marker for static tracepoint %d (%s) not " | |
13422 | "found at previous line number"), | |
5d9310c4 | 13423 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13424 | |
51abb421 | 13425 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13426 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13427 | uiout->text ("Now in "); |
0fb4aa4b PA |
13428 | if (sym) |
13429 | { | |
112e8700 SM |
13430 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13431 | uiout->text (" at "); | |
0fb4aa4b | 13432 | } |
112e8700 | 13433 | uiout->field_string ("file", |
05cba821 | 13434 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13435 | uiout->text (":"); |
0fb4aa4b | 13436 | |
112e8700 | 13437 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13438 | { |
0b0865da | 13439 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13440 | |
112e8700 | 13441 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13442 | } |
13443 | ||
112e8700 SM |
13444 | uiout->field_int ("line", sal2.line); |
13445 | uiout->text ("\n"); | |
0fb4aa4b | 13446 | |
80e1d417 | 13447 | b->loc->line_number = sal2.line; |
2f202fde | 13448 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13449 | |
d28cd78a | 13450 | b->location.reset (NULL); |
67994074 KS |
13451 | initialize_explicit_location (&explicit_loc); |
13452 | explicit_loc.source_filename | |
00e52e53 | 13453 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13454 | explicit_loc.line_offset.offset = b->loc->line_number; |
13455 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13456 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13457 | |
13458 | /* Might be nice to check if function changed, and warn if | |
13459 | so. */ | |
0fb4aa4b PA |
13460 | } |
13461 | } | |
13462 | return sal; | |
13463 | } | |
13464 | ||
8d3788bd VP |
13465 | /* Returns 1 iff locations A and B are sufficiently same that |
13466 | we don't need to report breakpoint as changed. */ | |
13467 | ||
13468 | static int | |
13469 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13470 | { | |
13471 | while (a && b) | |
13472 | { | |
13473 | if (a->address != b->address) | |
13474 | return 0; | |
13475 | ||
13476 | if (a->shlib_disabled != b->shlib_disabled) | |
13477 | return 0; | |
13478 | ||
13479 | if (a->enabled != b->enabled) | |
13480 | return 0; | |
13481 | ||
13482 | a = a->next; | |
13483 | b = b->next; | |
13484 | } | |
13485 | ||
13486 | if ((a == NULL) != (b == NULL)) | |
13487 | return 0; | |
13488 | ||
13489 | return 1; | |
13490 | } | |
13491 | ||
c2f4122d PA |
13492 | /* Split all locations of B that are bound to PSPACE out of B's |
13493 | location list to a separate list and return that list's head. If | |
13494 | PSPACE is NULL, hoist out all locations of B. */ | |
13495 | ||
13496 | static struct bp_location * | |
13497 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13498 | { | |
13499 | struct bp_location head; | |
13500 | struct bp_location *i = b->loc; | |
13501 | struct bp_location **i_link = &b->loc; | |
13502 | struct bp_location *hoisted = &head; | |
13503 | ||
13504 | if (pspace == NULL) | |
13505 | { | |
13506 | i = b->loc; | |
13507 | b->loc = NULL; | |
13508 | return i; | |
13509 | } | |
13510 | ||
13511 | head.next = NULL; | |
13512 | ||
13513 | while (i != NULL) | |
13514 | { | |
13515 | if (i->pspace == pspace) | |
13516 | { | |
13517 | *i_link = i->next; | |
13518 | i->next = NULL; | |
13519 | hoisted->next = i; | |
13520 | hoisted = i; | |
13521 | } | |
13522 | else | |
13523 | i_link = &i->next; | |
13524 | i = *i_link; | |
13525 | } | |
13526 | ||
13527 | return head.next; | |
13528 | } | |
13529 | ||
13530 | /* Create new breakpoint locations for B (a hardware or software | |
13531 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13532 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13533 | FILTER_PSPACE. Locations of other program spaces are left | |
13534 | untouched. */ | |
f1310107 | 13535 | |
0e30163f | 13536 | void |
0d381245 | 13537 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13538 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13539 | gdb::array_view<const symtab_and_line> sals, |
13540 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13541 | { |
c2f4122d | 13542 | struct bp_location *existing_locations; |
0d381245 | 13543 | |
6c5b2ebe | 13544 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13545 | { |
13546 | /* Ranged breakpoints have only one start location and one end | |
13547 | location. */ | |
13548 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13549 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13550 | "multiple locations found\n"), | |
13551 | b->number); | |
13552 | return; | |
13553 | } | |
f1310107 | 13554 | |
4a64f543 MS |
13555 | /* If there's no new locations, and all existing locations are |
13556 | pending, don't do anything. This optimizes the common case where | |
13557 | all locations are in the same shared library, that was unloaded. | |
13558 | We'd like to retain the location, so that when the library is | |
13559 | loaded again, we don't loose the enabled/disabled status of the | |
13560 | individual locations. */ | |
6c5b2ebe | 13561 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13562 | return; |
13563 | ||
c2f4122d | 13564 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13565 | |
6c5b2ebe | 13566 | for (const auto &sal : sals) |
fe3f5fa8 | 13567 | { |
f8eba3c6 TT |
13568 | struct bp_location *new_loc; |
13569 | ||
6c5b2ebe | 13570 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13571 | |
6c5b2ebe | 13572 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13573 | |
0d381245 VP |
13574 | /* Reparse conditions, they might contain references to the |
13575 | old symtab. */ | |
13576 | if (b->cond_string != NULL) | |
13577 | { | |
bbc13ae3 | 13578 | const char *s; |
fe3f5fa8 | 13579 | |
0d381245 | 13580 | s = b->cond_string; |
492d29ea | 13581 | TRY |
0d381245 | 13582 | { |
6c5b2ebe PA |
13583 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13584 | block_for_pc (sal.pc), | |
0d381245 VP |
13585 | 0); |
13586 | } | |
492d29ea | 13587 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13588 | { |
3e43a32a MS |
13589 | warning (_("failed to reevaluate condition " |
13590 | "for breakpoint %d: %s"), | |
0d381245 VP |
13591 | b->number, e.message); |
13592 | new_loc->enabled = 0; | |
13593 | } | |
492d29ea | 13594 | END_CATCH |
0d381245 | 13595 | } |
fe3f5fa8 | 13596 | |
6c5b2ebe | 13597 | if (!sals_end.empty ()) |
f1310107 | 13598 | { |
6c5b2ebe | 13599 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13600 | |
6c5b2ebe | 13601 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13602 | } |
0d381245 | 13603 | } |
fe3f5fa8 | 13604 | |
4a64f543 MS |
13605 | /* If possible, carry over 'disable' status from existing |
13606 | breakpoints. */ | |
0d381245 VP |
13607 | { |
13608 | struct bp_location *e = existing_locations; | |
776592bf DE |
13609 | /* If there are multiple breakpoints with the same function name, |
13610 | e.g. for inline functions, comparing function names won't work. | |
13611 | Instead compare pc addresses; this is just a heuristic as things | |
13612 | may have moved, but in practice it gives the correct answer | |
13613 | often enough until a better solution is found. */ | |
13614 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13615 | ||
0d381245 VP |
13616 | for (; e; e = e->next) |
13617 | { | |
13618 | if (!e->enabled && e->function_name) | |
13619 | { | |
13620 | struct bp_location *l = b->loc; | |
776592bf DE |
13621 | if (have_ambiguous_names) |
13622 | { | |
13623 | for (; l; l = l->next) | |
f1310107 | 13624 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13625 | { |
13626 | l->enabled = 0; | |
13627 | break; | |
13628 | } | |
13629 | } | |
13630 | else | |
13631 | { | |
13632 | for (; l; l = l->next) | |
13633 | if (l->function_name | |
13634 | && strcmp (e->function_name, l->function_name) == 0) | |
13635 | { | |
13636 | l->enabled = 0; | |
13637 | break; | |
13638 | } | |
13639 | } | |
0d381245 VP |
13640 | } |
13641 | } | |
13642 | } | |
fe3f5fa8 | 13643 | |
8d3788bd | 13644 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13645 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13646 | } |
13647 | ||
f00aae0f | 13648 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13649 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13650 | ||
6c5b2ebe | 13651 | static std::vector<symtab_and_line> |
f00aae0f | 13652 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13653 | struct program_space *search_pspace, int *found) |
ef23e705 | 13654 | { |
492d29ea | 13655 | struct gdb_exception exception = exception_none; |
ef23e705 | 13656 | |
983af33b | 13657 | gdb_assert (b->ops != NULL); |
ef23e705 | 13658 | |
6c5b2ebe PA |
13659 | std::vector<symtab_and_line> sals; |
13660 | ||
492d29ea | 13661 | TRY |
ef23e705 | 13662 | { |
6c5b2ebe | 13663 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13664 | } |
492d29ea | 13665 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13666 | { |
13667 | int not_found_and_ok = 0; | |
492d29ea PA |
13668 | |
13669 | exception = e; | |
13670 | ||
ef23e705 TJB |
13671 | /* For pending breakpoints, it's expected that parsing will |
13672 | fail until the right shared library is loaded. User has | |
13673 | already told to create pending breakpoints and don't need | |
13674 | extra messages. If breakpoint is in bp_shlib_disabled | |
13675 | state, then user already saw the message about that | |
13676 | breakpoint being disabled, and don't want to see more | |
13677 | errors. */ | |
58438ac1 | 13678 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13679 | && (b->condition_not_parsed |
13680 | || (b->loc != NULL | |
13681 | && search_pspace != NULL | |
13682 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13683 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13684 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13685 | || b->enable_state == bp_disabled)) |
13686 | not_found_and_ok = 1; | |
13687 | ||
13688 | if (!not_found_and_ok) | |
13689 | { | |
13690 | /* We surely don't want to warn about the same breakpoint | |
13691 | 10 times. One solution, implemented here, is disable | |
13692 | the breakpoint on error. Another solution would be to | |
13693 | have separate 'warning emitted' flag. Since this | |
13694 | happens only when a binary has changed, I don't know | |
13695 | which approach is better. */ | |
13696 | b->enable_state = bp_disabled; | |
13697 | throw_exception (e); | |
13698 | } | |
13699 | } | |
492d29ea | 13700 | END_CATCH |
ef23e705 | 13701 | |
492d29ea | 13702 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13703 | { |
6c5b2ebe PA |
13704 | for (auto &sal : sals) |
13705 | resolve_sal_pc (&sal); | |
f00aae0f | 13706 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13707 | { |
ed1d1739 KS |
13708 | char *cond_string, *extra_string; |
13709 | int thread, task; | |
ef23e705 | 13710 | |
6c5b2ebe | 13711 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13712 | &cond_string, &thread, &task, |
13713 | &extra_string); | |
f00aae0f | 13714 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13715 | if (cond_string) |
13716 | b->cond_string = cond_string; | |
13717 | b->thread = thread; | |
13718 | b->task = task; | |
e7e0cddf | 13719 | if (extra_string) |
f00aae0f KS |
13720 | { |
13721 | xfree (b->extra_string); | |
13722 | b->extra_string = extra_string; | |
13723 | } | |
ef23e705 TJB |
13724 | b->condition_not_parsed = 0; |
13725 | } | |
13726 | ||
983af33b | 13727 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13728 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13729 | |
58438ac1 TT |
13730 | *found = 1; |
13731 | } | |
13732 | else | |
13733 | *found = 0; | |
ef23e705 TJB |
13734 | |
13735 | return sals; | |
13736 | } | |
13737 | ||
348d480f PA |
13738 | /* The default re_set method, for typical hardware or software |
13739 | breakpoints. Reevaluate the breakpoint and recreate its | |
13740 | locations. */ | |
13741 | ||
13742 | static void | |
28010a5d | 13743 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13744 | { |
c2f4122d | 13745 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13746 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13747 | |
6c5b2ebe PA |
13748 | int found; |
13749 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13750 | filter_pspace, &found); | |
ef23e705 | 13751 | if (found) |
6c5b2ebe | 13752 | expanded = std::move (sals); |
ef23e705 | 13753 | |
f00aae0f | 13754 | if (b->location_range_end != NULL) |
f1310107 | 13755 | { |
6c5b2ebe PA |
13756 | std::vector<symtab_and_line> sals_end |
13757 | = location_to_sals (b, b->location_range_end.get (), | |
13758 | filter_pspace, &found); | |
f1310107 | 13759 | if (found) |
6c5b2ebe | 13760 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13761 | } |
13762 | ||
c2f4122d | 13763 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13764 | } |
13765 | ||
983af33b SDJ |
13766 | /* Default method for creating SALs from an address string. It basically |
13767 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13768 | ||
13769 | static void | |
f00aae0f KS |
13770 | create_sals_from_location_default (const struct event_location *location, |
13771 | struct linespec_result *canonical, | |
13772 | enum bptype type_wanted) | |
983af33b | 13773 | { |
f00aae0f | 13774 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13775 | } |
13776 | ||
13777 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13778 | function for the `create_breakpoints_sal' method of | |
13779 | breakpoint_ops. */ | |
13780 | ||
13781 | static void | |
13782 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13783 | struct linespec_result *canonical, | |
e1e01040 PA |
13784 | gdb::unique_xmalloc_ptr<char> cond_string, |
13785 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13786 | enum bptype type_wanted, |
13787 | enum bpdisp disposition, | |
13788 | int thread, | |
13789 | int task, int ignore_count, | |
13790 | const struct breakpoint_ops *ops, | |
13791 | int from_tty, int enabled, | |
44f238bb | 13792 | int internal, unsigned flags) |
983af33b | 13793 | { |
e1e01040 PA |
13794 | create_breakpoints_sal (gdbarch, canonical, |
13795 | std::move (cond_string), | |
13796 | std::move (extra_string), | |
983af33b SDJ |
13797 | type_wanted, disposition, |
13798 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13799 | enabled, internal, flags); |
983af33b SDJ |
13800 | } |
13801 | ||
13802 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13803 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13804 | |
6c5b2ebe | 13805 | static std::vector<symtab_and_line> |
f00aae0f KS |
13806 | decode_location_default (struct breakpoint *b, |
13807 | const struct event_location *location, | |
6c5b2ebe | 13808 | struct program_space *search_pspace) |
983af33b SDJ |
13809 | { |
13810 | struct linespec_result canonical; | |
13811 | ||
c2f4122d | 13812 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13813 | (struct symtab *) NULL, 0, |
13814 | &canonical, multiple_symbols_all, | |
13815 | b->filter); | |
13816 | ||
13817 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13818 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13819 | |
6c5b2ebe | 13820 | if (!canonical.lsals.empty ()) |
983af33b | 13821 | { |
6c5b2ebe PA |
13822 | const linespec_sals &lsal = canonical.lsals[0]; |
13823 | return std::move (lsal.sals); | |
983af33b | 13824 | } |
6c5b2ebe | 13825 | return {}; |
983af33b SDJ |
13826 | } |
13827 | ||
bf469271 | 13828 | /* Reset a breakpoint. */ |
c906108c | 13829 | |
bf469271 PA |
13830 | static void |
13831 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13832 | { |
fdf44873 TT |
13833 | input_radix = b->input_radix; |
13834 | set_language (b->language); | |
c906108c | 13835 | |
348d480f | 13836 | b->ops->re_set (b); |
c906108c SS |
13837 | } |
13838 | ||
c2f4122d PA |
13839 | /* Re-set breakpoint locations for the current program space. |
13840 | Locations bound to other program spaces are left untouched. */ | |
13841 | ||
c906108c | 13842 | void |
69de3c6a | 13843 | breakpoint_re_set (void) |
c906108c | 13844 | { |
35df4500 | 13845 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13846 | |
c5aa993b | 13847 | { |
fdf44873 TT |
13848 | scoped_restore_current_language save_language; |
13849 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13850 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13851 | |
8e817061 JB |
13852 | /* breakpoint_re_set_one sets the current_language to the language |
13853 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13854 | before re-evaluating the breakpoint's location. This change can | |
13855 | unfortunately get undone by accident if the language_mode is set | |
13856 | to auto, and we either switch frames, or more likely in this context, | |
13857 | we select the current frame. | |
13858 | ||
13859 | We prevent this by temporarily turning the language_mode to | |
13860 | language_mode_manual. We restore it once all breakpoints | |
13861 | have been reset. */ | |
13862 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13863 | language_mode = language_mode_manual; | |
13864 | ||
5ed8105e PA |
13865 | /* Note: we must not try to insert locations until after all |
13866 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13867 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13868 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13869 | |
5ed8105e PA |
13870 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13871 | { | |
bf469271 PA |
13872 | TRY |
13873 | { | |
13874 | breakpoint_re_set_one (b); | |
13875 | } | |
13876 | CATCH (ex, RETURN_MASK_ALL) | |
13877 | { | |
13878 | exception_fprintf (gdb_stderr, ex, | |
13879 | "Error in re-setting breakpoint %d: ", | |
13880 | b->number); | |
13881 | } | |
13882 | END_CATCH | |
5ed8105e | 13883 | } |
5ed8105e PA |
13884 | |
13885 | jit_breakpoint_re_set (); | |
13886 | } | |
6c95b8df | 13887 | |
af02033e PP |
13888 | create_overlay_event_breakpoint (); |
13889 | create_longjmp_master_breakpoint (); | |
13890 | create_std_terminate_master_breakpoint (); | |
186c406b | 13891 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13892 | |
13893 | /* Now we can insert. */ | |
13894 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13895 | } |
13896 | \f | |
c906108c SS |
13897 | /* Reset the thread number of this breakpoint: |
13898 | ||
13899 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13900 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13901 | void |
fba45db2 | 13902 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13903 | { |
13904 | if (b->thread != -1) | |
13905 | { | |
00431a78 | 13906 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13907 | |
13908 | /* We're being called after following a fork. The new fork is | |
13909 | selected as current, and unless this was a vfork will have a | |
13910 | different program space from the original thread. Reset that | |
13911 | as well. */ | |
13912 | b->loc->pspace = current_program_space; | |
c906108c SS |
13913 | } |
13914 | } | |
13915 | ||
03ac34d5 MS |
13916 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13917 | If from_tty is nonzero, it prints a message to that effect, | |
13918 | which ends with a period (no newline). */ | |
13919 | ||
c906108c | 13920 | void |
fba45db2 | 13921 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13922 | { |
52f0bd74 | 13923 | struct breakpoint *b; |
c906108c SS |
13924 | |
13925 | if (count < 0) | |
13926 | count = 0; | |
13927 | ||
13928 | ALL_BREAKPOINTS (b) | |
13929 | if (b->number == bptnum) | |
c5aa993b | 13930 | { |
d77f58be SS |
13931 | if (is_tracepoint (b)) |
13932 | { | |
13933 | if (from_tty && count != 0) | |
13934 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13935 | bptnum); | |
13936 | return; | |
13937 | } | |
13938 | ||
c5aa993b | 13939 | b->ignore_count = count; |
221ea385 KS |
13940 | if (from_tty) |
13941 | { | |
13942 | if (count == 0) | |
3e43a32a MS |
13943 | printf_filtered (_("Will stop next time " |
13944 | "breakpoint %d is reached."), | |
221ea385 KS |
13945 | bptnum); |
13946 | else if (count == 1) | |
a3f17187 | 13947 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13948 | bptnum); |
13949 | else | |
3e43a32a MS |
13950 | printf_filtered (_("Will ignore next %d " |
13951 | "crossings of breakpoint %d."), | |
221ea385 KS |
13952 | count, bptnum); |
13953 | } | |
76727919 | 13954 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13955 | return; |
13956 | } | |
c906108c | 13957 | |
8a3fe4f8 | 13958 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13959 | } |
13960 | ||
c906108c SS |
13961 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13962 | ||
13963 | static void | |
0b39b52e | 13964 | ignore_command (const char *args, int from_tty) |
c906108c | 13965 | { |
0b39b52e | 13966 | const char *p = args; |
52f0bd74 | 13967 | int num; |
c906108c SS |
13968 | |
13969 | if (p == 0) | |
e2e0b3e5 | 13970 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13971 | |
c906108c | 13972 | num = get_number (&p); |
5c44784c | 13973 | if (num == 0) |
8a3fe4f8 | 13974 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13975 | if (*p == 0) |
8a3fe4f8 | 13976 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13977 | |
13978 | set_ignore_count (num, | |
13979 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13980 | from_tty); | |
221ea385 KS |
13981 | if (from_tty) |
13982 | printf_filtered ("\n"); | |
c906108c SS |
13983 | } |
13984 | \f | |
d0fe4701 XR |
13985 | |
13986 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13987 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13988 | |
13989 | static void | |
d0fe4701 XR |
13990 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13991 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13992 | { |
d0fe4701 XR |
13993 | if (bp_num_range.first == 0) |
13994 | { | |
13995 | warning (_("bad breakpoint number at or near '%d'"), | |
13996 | bp_num_range.first); | |
13997 | } | |
13998 | else | |
c906108c | 13999 | { |
d0fe4701 | 14000 | struct breakpoint *b, *tmp; |
197f0a60 | 14001 | |
d0fe4701 | 14002 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14003 | { |
d0fe4701 XR |
14004 | bool match = false; |
14005 | ||
5c44784c | 14006 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14007 | if (b->number == i) |
5c44784c | 14008 | { |
bfd28288 | 14009 | match = true; |
48649e1b | 14010 | function (b); |
11cf8741 | 14011 | break; |
5c44784c | 14012 | } |
bfd28288 | 14013 | if (!match) |
d0fe4701 | 14014 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14015 | } |
c906108c SS |
14016 | } |
14017 | } | |
14018 | ||
d0fe4701 XR |
14019 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14020 | ARGS. */ | |
14021 | ||
14022 | static void | |
14023 | map_breakpoint_numbers (const char *args, | |
14024 | gdb::function_view<void (breakpoint *)> function) | |
14025 | { | |
14026 | if (args == NULL || *args == '\0') | |
14027 | error_no_arg (_("one or more breakpoint numbers")); | |
14028 | ||
14029 | number_or_range_parser parser (args); | |
14030 | ||
14031 | while (!parser.finished ()) | |
14032 | { | |
14033 | int num = parser.get_number (); | |
14034 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14035 | } | |
14036 | } | |
14037 | ||
14038 | /* Return the breakpoint location structure corresponding to the | |
14039 | BP_NUM and LOC_NUM values. */ | |
14040 | ||
0d381245 | 14041 | static struct bp_location * |
d0fe4701 | 14042 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14043 | { |
0d381245 | 14044 | struct breakpoint *b; |
0d381245 VP |
14045 | |
14046 | ALL_BREAKPOINTS (b) | |
14047 | if (b->number == bp_num) | |
14048 | { | |
14049 | break; | |
14050 | } | |
14051 | ||
14052 | if (!b || b->number != bp_num) | |
d0fe4701 | 14053 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14054 | |
0d381245 | 14055 | if (loc_num == 0) |
d0fe4701 | 14056 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14057 | |
d0fe4701 XR |
14058 | int n = 0; |
14059 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14060 | if (++n == loc_num) | |
14061 | return loc; | |
14062 | ||
14063 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14064 | } |
14065 | ||
95e95a6d PA |
14066 | /* Modes of operation for extract_bp_num. */ |
14067 | enum class extract_bp_kind | |
14068 | { | |
14069 | /* Extracting a breakpoint number. */ | |
14070 | bp, | |
14071 | ||
14072 | /* Extracting a location number. */ | |
14073 | loc, | |
14074 | }; | |
14075 | ||
14076 | /* Extract a breakpoint or location number (as determined by KIND) | |
14077 | from the string starting at START. TRAILER is a character which | |
14078 | can be found after the number. If you don't want a trailer, use | |
14079 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14080 | string. This always returns a positive integer. */ | |
14081 | ||
14082 | static int | |
14083 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14084 | int trailer, const char **end_out = NULL) | |
14085 | { | |
14086 | const char *end = start; | |
14087 | int num = get_number_trailer (&end, trailer); | |
14088 | if (num < 0) | |
14089 | error (kind == extract_bp_kind::bp | |
14090 | ? _("Negative breakpoint number '%.*s'") | |
14091 | : _("Negative breakpoint location number '%.*s'"), | |
14092 | int (end - start), start); | |
14093 | if (num == 0) | |
14094 | error (kind == extract_bp_kind::bp | |
14095 | ? _("Bad breakpoint number '%.*s'") | |
14096 | : _("Bad breakpoint location number '%.*s'"), | |
14097 | int (end - start), start); | |
14098 | ||
14099 | if (end_out != NULL) | |
14100 | *end_out = end; | |
14101 | return num; | |
14102 | } | |
14103 | ||
14104 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14105 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14106 | representing the (inclusive) range. The returned pair's elements | |
14107 | are always positive integers. */ | |
14108 | ||
14109 | static std::pair<int, int> | |
14110 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14111 | const std::string &arg, | |
14112 | std::string::size_type arg_offset) | |
14113 | { | |
14114 | std::pair<int, int> range; | |
14115 | const char *bp_loc = &arg[arg_offset]; | |
14116 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14117 | if (dash != std::string::npos) | |
14118 | { | |
14119 | /* bp_loc is a range (x-z). */ | |
14120 | if (arg.length () == dash + 1) | |
14121 | error (kind == extract_bp_kind::bp | |
14122 | ? _("Bad breakpoint number at or near: '%s'") | |
14123 | : _("Bad breakpoint location number at or near: '%s'"), | |
14124 | bp_loc); | |
14125 | ||
14126 | const char *end; | |
14127 | const char *start_first = bp_loc; | |
14128 | const char *start_second = &arg[dash + 1]; | |
14129 | range.first = extract_bp_num (kind, start_first, '-'); | |
14130 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14131 | ||
14132 | if (range.first > range.second) | |
14133 | error (kind == extract_bp_kind::bp | |
14134 | ? _("Inverted breakpoint range at '%.*s'") | |
14135 | : _("Inverted breakpoint location range at '%.*s'"), | |
14136 | int (end - start_first), start_first); | |
14137 | } | |
14138 | else | |
14139 | { | |
14140 | /* bp_loc is a single value. */ | |
14141 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14142 | range.second = range.first; | |
14143 | } | |
14144 | return range; | |
14145 | } | |
14146 | ||
d0fe4701 XR |
14147 | /* Extract the breakpoint/location range specified by ARG. Returns |
14148 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14149 | BP_LOC_RANGE. | |
14150 | ||
14151 | ARG may be in any of the following forms: | |
14152 | ||
14153 | x where 'x' is a breakpoint number. | |
14154 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14155 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14156 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14157 | location number range. | |
14158 | */ | |
14159 | ||
cc638e86 | 14160 | static void |
d0fe4701 XR |
14161 | extract_bp_number_and_location (const std::string &arg, |
14162 | std::pair<int, int> &bp_num_range, | |
14163 | std::pair<int, int> &bp_loc_range) | |
14164 | { | |
14165 | std::string::size_type dot = arg.find ('.'); | |
14166 | ||
14167 | if (dot != std::string::npos) | |
14168 | { | |
14169 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14170 | ||
14171 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14172 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14173 | |
95e95a6d PA |
14174 | bp_num_range.first |
14175 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14176 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14177 | |
95e95a6d PA |
14178 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14179 | arg, dot + 1); | |
d0fe4701 XR |
14180 | } |
14181 | else | |
14182 | { | |
14183 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14184 | |
95e95a6d | 14185 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14186 | bp_loc_range.first = 0; |
14187 | bp_loc_range.second = 0; | |
14188 | } | |
d0fe4701 XR |
14189 | } |
14190 | ||
14191 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14192 | specifies whether to enable or disable. */ | |
14193 | ||
14194 | static void | |
14195 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14196 | { | |
14197 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14198 | if (loc != NULL) | |
14199 | { | |
14200 | if (loc->enabled != enable) | |
14201 | { | |
14202 | loc->enabled = enable; | |
14203 | mark_breakpoint_location_modified (loc); | |
14204 | } | |
14205 | if (target_supports_enable_disable_tracepoint () | |
14206 | && current_trace_status ()->running && loc->owner | |
14207 | && is_tracepoint (loc->owner)) | |
14208 | target_disable_tracepoint (loc); | |
14209 | } | |
14210 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14211 | |
14212 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14213 | } |
14214 | ||
14215 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14216 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14217 | (inclusive) range of location numbers of that breakpoint to | |
14218 | enable/disable. ENABLE specifies whether to enable or disable the | |
14219 | location. */ | |
14220 | ||
14221 | static void | |
14222 | enable_disable_breakpoint_location_range (int bp_num, | |
14223 | std::pair<int, int> &bp_loc_range, | |
14224 | bool enable) | |
14225 | { | |
14226 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14227 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14228 | } | |
0d381245 | 14229 | |
1900040c MS |
14230 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14231 | If from_tty is nonzero, it prints a message to that effect, | |
14232 | which ends with a period (no newline). */ | |
14233 | ||
c906108c | 14234 | void |
fba45db2 | 14235 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14236 | { |
14237 | /* Never disable a watchpoint scope breakpoint; we want to | |
14238 | hit them when we leave scope so we can delete both the | |
14239 | watchpoint and its scope breakpoint at that time. */ | |
14240 | if (bpt->type == bp_watchpoint_scope) | |
14241 | return; | |
14242 | ||
b5de0fa7 | 14243 | bpt->enable_state = bp_disabled; |
c906108c | 14244 | |
b775012e LM |
14245 | /* Mark breakpoint locations modified. */ |
14246 | mark_breakpoint_modified (bpt); | |
14247 | ||
d248b706 KY |
14248 | if (target_supports_enable_disable_tracepoint () |
14249 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14250 | { | |
14251 | struct bp_location *location; | |
14252 | ||
14253 | for (location = bpt->loc; location; location = location->next) | |
14254 | target_disable_tracepoint (location); | |
14255 | } | |
14256 | ||
44702360 | 14257 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14258 | |
76727919 | 14259 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14260 | } |
14261 | ||
d0fe4701 XR |
14262 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14263 | specified in ARGS. ARGS may be in any of the formats handled by | |
14264 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14265 | or disable the breakpoints/locations. */ | |
14266 | ||
c906108c | 14267 | static void |
d0fe4701 | 14268 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14269 | { |
c906108c | 14270 | if (args == 0) |
46c6471b PA |
14271 | { |
14272 | struct breakpoint *bpt; | |
14273 | ||
14274 | ALL_BREAKPOINTS (bpt) | |
14275 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14276 | { |
14277 | if (enable) | |
14278 | enable_breakpoint (bpt); | |
14279 | else | |
14280 | disable_breakpoint (bpt); | |
14281 | } | |
46c6471b | 14282 | } |
9eaabc75 | 14283 | else |
0d381245 | 14284 | { |
cb791d59 | 14285 | std::string num = extract_arg (&args); |
9eaabc75 | 14286 | |
cb791d59 | 14287 | while (!num.empty ()) |
d248b706 | 14288 | { |
d0fe4701 | 14289 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14290 | |
cc638e86 PA |
14291 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14292 | ||
14293 | if (bp_loc_range.first == bp_loc_range.second | |
14294 | && bp_loc_range.first == 0) | |
d0fe4701 | 14295 | { |
cc638e86 PA |
14296 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14297 | map_breakpoint_number_range (bp_num_range, | |
14298 | enable | |
14299 | ? enable_breakpoint | |
14300 | : disable_breakpoint); | |
14301 | } | |
14302 | else | |
14303 | { | |
14304 | /* Handle breakpoint ids with formats 'x.y' or | |
14305 | 'x.y-z'. */ | |
14306 | enable_disable_breakpoint_location_range | |
14307 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14308 | } |
9eaabc75 | 14309 | num = extract_arg (&args); |
d248b706 | 14310 | } |
0d381245 | 14311 | } |
c906108c SS |
14312 | } |
14313 | ||
d0fe4701 XR |
14314 | /* The disable command disables the specified breakpoints/locations |
14315 | (or all defined breakpoints) so they're no longer effective in | |
14316 | stopping the inferior. ARGS may be in any of the forms defined in | |
14317 | extract_bp_number_and_location. */ | |
14318 | ||
14319 | static void | |
14320 | disable_command (const char *args, int from_tty) | |
14321 | { | |
14322 | enable_disable_command (args, from_tty, false); | |
14323 | } | |
14324 | ||
c906108c | 14325 | static void |
816338b5 SS |
14326 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14327 | int count) | |
c906108c | 14328 | { |
afe38095 | 14329 | int target_resources_ok; |
c906108c SS |
14330 | |
14331 | if (bpt->type == bp_hardware_breakpoint) | |
14332 | { | |
14333 | int i; | |
c5aa993b | 14334 | i = hw_breakpoint_used_count (); |
53a5351d | 14335 | target_resources_ok = |
d92524f1 | 14336 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14337 | i + 1, 0); |
c906108c | 14338 | if (target_resources_ok == 0) |
8a3fe4f8 | 14339 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14340 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14341 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14342 | } |
14343 | ||
cc60f2e3 | 14344 | if (is_watchpoint (bpt)) |
c906108c | 14345 | { |
d07205c2 | 14346 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14347 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14348 | |
492d29ea | 14349 | TRY |
c906108c | 14350 | { |
3a5c3e22 PA |
14351 | struct watchpoint *w = (struct watchpoint *) bpt; |
14352 | ||
1e718ff1 TJB |
14353 | orig_enable_state = bpt->enable_state; |
14354 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14355 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14356 | } |
492d29ea | 14357 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14358 | { |
1e718ff1 | 14359 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14360 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14361 | bpt->number); | |
14362 | return; | |
c5aa993b | 14363 | } |
492d29ea | 14364 | END_CATCH |
c906108c | 14365 | } |
0101ce28 | 14366 | |
b775012e LM |
14367 | bpt->enable_state = bp_enabled; |
14368 | ||
14369 | /* Mark breakpoint locations modified. */ | |
14370 | mark_breakpoint_modified (bpt); | |
14371 | ||
d248b706 KY |
14372 | if (target_supports_enable_disable_tracepoint () |
14373 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14374 | { | |
14375 | struct bp_location *location; | |
14376 | ||
14377 | for (location = bpt->loc; location; location = location->next) | |
14378 | target_enable_tracepoint (location); | |
14379 | } | |
14380 | ||
b4c291bb | 14381 | bpt->disposition = disposition; |
816338b5 | 14382 | bpt->enable_count = count; |
44702360 | 14383 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14384 | |
76727919 | 14385 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14386 | } |
14387 | ||
fe3f5fa8 | 14388 | |
c906108c | 14389 | void |
fba45db2 | 14390 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14391 | { |
816338b5 | 14392 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14393 | } |
14394 | ||
d0fe4701 XR |
14395 | /* The enable command enables the specified breakpoints/locations (or |
14396 | all defined breakpoints) so they once again become (or continue to | |
14397 | be) effective in stopping the inferior. ARGS may be in any of the | |
14398 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14399 | |
c906108c | 14400 | static void |
981a3fb3 | 14401 | enable_command (const char *args, int from_tty) |
c906108c | 14402 | { |
d0fe4701 | 14403 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14404 | } |
14405 | ||
c906108c | 14406 | static void |
4495129a | 14407 | enable_once_command (const char *args, int from_tty) |
c906108c | 14408 | { |
48649e1b TT |
14409 | map_breakpoint_numbers |
14410 | (args, [&] (breakpoint *b) | |
14411 | { | |
14412 | iterate_over_related_breakpoints | |
14413 | (b, [&] (breakpoint *bpt) | |
14414 | { | |
14415 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14416 | }); | |
14417 | }); | |
816338b5 SS |
14418 | } |
14419 | ||
14420 | static void | |
4495129a | 14421 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14422 | { |
b9d61307 SM |
14423 | int count; |
14424 | ||
14425 | if (args == NULL) | |
14426 | error_no_arg (_("hit count")); | |
14427 | ||
14428 | count = get_number (&args); | |
816338b5 | 14429 | |
48649e1b TT |
14430 | map_breakpoint_numbers |
14431 | (args, [&] (breakpoint *b) | |
14432 | { | |
14433 | iterate_over_related_breakpoints | |
14434 | (b, [&] (breakpoint *bpt) | |
14435 | { | |
14436 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14437 | }); | |
14438 | }); | |
c906108c SS |
14439 | } |
14440 | ||
c906108c | 14441 | static void |
4495129a | 14442 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14443 | { |
48649e1b TT |
14444 | map_breakpoint_numbers |
14445 | (args, [&] (breakpoint *b) | |
14446 | { | |
14447 | iterate_over_related_breakpoints | |
14448 | (b, [&] (breakpoint *bpt) | |
14449 | { | |
14450 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14451 | }); | |
14452 | }); | |
c906108c SS |
14453 | } |
14454 | \f | |
fa8d40ab | 14455 | static void |
981a3fb3 | 14456 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14457 | { |
14458 | } | |
14459 | ||
14460 | static void | |
981a3fb3 | 14461 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14462 | { |
14463 | } | |
14464 | ||
1f3b5d1b PP |
14465 | /* Invalidate last known value of any hardware watchpoint if |
14466 | the memory which that value represents has been written to by | |
14467 | GDB itself. */ | |
14468 | ||
14469 | static void | |
8de0566d YQ |
14470 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14471 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14472 | const bfd_byte *data) |
14473 | { | |
14474 | struct breakpoint *bp; | |
14475 | ||
14476 | ALL_BREAKPOINTS (bp) | |
14477 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14478 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14479 | { |
3a5c3e22 | 14480 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14481 | |
850645cf | 14482 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14483 | { |
14484 | struct bp_location *loc; | |
14485 | ||
14486 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14487 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14488 | && loc->address + loc->length > addr | |
14489 | && addr + len > loc->address) | |
14490 | { | |
3a5c3e22 PA |
14491 | wp->val = NULL; |
14492 | wp->val_valid = 0; | |
14493 | } | |
14494 | } | |
1f3b5d1b PP |
14495 | } |
14496 | } | |
14497 | ||
8181d85f DJ |
14498 | /* Create and insert a breakpoint for software single step. */ |
14499 | ||
14500 | void | |
6c95b8df | 14501 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14502 | const address_space *aspace, |
4a64f543 | 14503 | CORE_ADDR next_pc) |
8181d85f | 14504 | { |
7c16b83e PA |
14505 | struct thread_info *tp = inferior_thread (); |
14506 | struct symtab_and_line sal; | |
14507 | CORE_ADDR pc = next_pc; | |
8181d85f | 14508 | |
34b7e8a6 PA |
14509 | if (tp->control.single_step_breakpoints == NULL) |
14510 | { | |
14511 | tp->control.single_step_breakpoints | |
5d5658a1 | 14512 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14513 | } |
8181d85f | 14514 | |
7c16b83e PA |
14515 | sal = find_pc_line (pc, 0); |
14516 | sal.pc = pc; | |
14517 | sal.section = find_pc_overlay (pc); | |
14518 | sal.explicit_pc = 1; | |
34b7e8a6 | 14519 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14520 | |
7c16b83e | 14521 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14522 | } |
14523 | ||
93f9a11f YQ |
14524 | /* Insert single step breakpoints according to the current state. */ |
14525 | ||
14526 | int | |
14527 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14528 | { | |
f5ea389a | 14529 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14530 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14531 | |
f5ea389a | 14532 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14533 | |
a0ff9e1a | 14534 | if (!next_pcs.empty ()) |
93f9a11f | 14535 | { |
f5ea389a | 14536 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14537 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14538 | |
a0ff9e1a | 14539 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14540 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14541 | ||
93f9a11f YQ |
14542 | return 1; |
14543 | } | |
14544 | else | |
14545 | return 0; | |
14546 | } | |
14547 | ||
34b7e8a6 | 14548 | /* See breakpoint.h. */ |
f02253f1 HZ |
14549 | |
14550 | int | |
7c16b83e | 14551 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14552 | const address_space *aspace, |
7c16b83e | 14553 | CORE_ADDR pc) |
1aafd4da | 14554 | { |
7c16b83e | 14555 | struct bp_location *loc; |
1aafd4da | 14556 | |
7c16b83e PA |
14557 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14558 | if (loc->inserted | |
14559 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14560 | return 1; | |
1aafd4da | 14561 | |
7c16b83e | 14562 | return 0; |
ef370185 JB |
14563 | } |
14564 | ||
14565 | /* Check whether a software single-step breakpoint is inserted at | |
14566 | PC. */ | |
14567 | ||
14568 | int | |
accd0bcd | 14569 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14570 | CORE_ADDR pc) |
14571 | { | |
34b7e8a6 PA |
14572 | struct breakpoint *bpt; |
14573 | ||
14574 | ALL_BREAKPOINTS (bpt) | |
14575 | { | |
14576 | if (bpt->type == bp_single_step | |
14577 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14578 | return 1; | |
14579 | } | |
14580 | return 0; | |
1aafd4da UW |
14581 | } |
14582 | ||
1042e4c0 SS |
14583 | /* Tracepoint-specific operations. */ |
14584 | ||
14585 | /* Set tracepoint count to NUM. */ | |
14586 | static void | |
14587 | set_tracepoint_count (int num) | |
14588 | { | |
14589 | tracepoint_count = num; | |
4fa62494 | 14590 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14591 | } |
14592 | ||
70221824 | 14593 | static void |
0b39b52e | 14594 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14595 | { |
55aa24fb | 14596 | struct breakpoint_ops *ops; |
55aa24fb | 14597 | |
ffc2605c TT |
14598 | event_location_up location = string_to_event_location (&arg, |
14599 | current_language); | |
5b56227b | 14600 | if (location != NULL |
ffc2605c | 14601 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14602 | ops = &tracepoint_probe_breakpoint_ops; |
14603 | else | |
14604 | ops = &tracepoint_breakpoint_ops; | |
14605 | ||
558a9d82 | 14606 | create_breakpoint (get_current_arch (), |
ffc2605c | 14607 | location.get (), |
f00aae0f | 14608 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14609 | 0 /* tempflag */, |
14610 | bp_tracepoint /* type_wanted */, | |
14611 | 0 /* Ignore count */, | |
14612 | pending_break_support, | |
14613 | ops, | |
14614 | from_tty, | |
14615 | 1 /* enabled */, | |
14616 | 0 /* internal */, 0); | |
1042e4c0 SS |
14617 | } |
14618 | ||
70221824 | 14619 | static void |
0b39b52e | 14620 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14621 | { |
ffc2605c TT |
14622 | event_location_up location = string_to_event_location (&arg, |
14623 | current_language); | |
558a9d82 | 14624 | create_breakpoint (get_current_arch (), |
ffc2605c | 14625 | location.get (), |
f00aae0f | 14626 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14627 | 0 /* tempflag */, |
14628 | bp_fast_tracepoint /* type_wanted */, | |
14629 | 0 /* Ignore count */, | |
14630 | pending_break_support, | |
14631 | &tracepoint_breakpoint_ops, | |
14632 | from_tty, | |
14633 | 1 /* enabled */, | |
14634 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14635 | } |
14636 | ||
14637 | /* strace command implementation. Creates a static tracepoint. */ | |
14638 | ||
70221824 | 14639 | static void |
0b39b52e | 14640 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14641 | { |
983af33b | 14642 | struct breakpoint_ops *ops; |
ffc2605c | 14643 | event_location_up location; |
983af33b SDJ |
14644 | |
14645 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14646 | or with a normal static tracepoint. */ | |
61012eef | 14647 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14648 | { |
14649 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14650 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14651 | } |
983af33b | 14652 | else |
f00aae0f KS |
14653 | { |
14654 | ops = &tracepoint_breakpoint_ops; | |
14655 | location = string_to_event_location (&arg, current_language); | |
14656 | } | |
983af33b | 14657 | |
558a9d82 | 14658 | create_breakpoint (get_current_arch (), |
ffc2605c | 14659 | location.get (), |
f00aae0f | 14660 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14661 | 0 /* tempflag */, |
14662 | bp_static_tracepoint /* type_wanted */, | |
14663 | 0 /* Ignore count */, | |
14664 | pending_break_support, | |
14665 | ops, | |
14666 | from_tty, | |
14667 | 1 /* enabled */, | |
14668 | 0 /* internal */, 0); | |
7a697b8d SS |
14669 | } |
14670 | ||
409873ef SS |
14671 | /* Set up a fake reader function that gets command lines from a linked |
14672 | list that was acquired during tracepoint uploading. */ | |
14673 | ||
14674 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14675 | static int next_cmd; |
409873ef SS |
14676 | |
14677 | static char * | |
14678 | read_uploaded_action (void) | |
14679 | { | |
a18ba4e4 | 14680 | char *rslt = nullptr; |
409873ef | 14681 | |
a18ba4e4 SM |
14682 | if (next_cmd < this_utp->cmd_strings.size ()) |
14683 | { | |
14684 | rslt = this_utp->cmd_strings[next_cmd]; | |
14685 | next_cmd++; | |
14686 | } | |
409873ef SS |
14687 | |
14688 | return rslt; | |
14689 | } | |
14690 | ||
00bf0b85 SS |
14691 | /* Given information about a tracepoint as recorded on a target (which |
14692 | can be either a live system or a trace file), attempt to create an | |
14693 | equivalent GDB tracepoint. This is not a reliable process, since | |
14694 | the target does not necessarily have all the information used when | |
14695 | the tracepoint was originally defined. */ | |
14696 | ||
d9b3f62e | 14697 | struct tracepoint * |
00bf0b85 | 14698 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14699 | { |
f2fc3015 TT |
14700 | const char *addr_str; |
14701 | char small_buf[100]; | |
d9b3f62e | 14702 | struct tracepoint *tp; |
fd9b8c24 | 14703 | |
409873ef SS |
14704 | if (utp->at_string) |
14705 | addr_str = utp->at_string; | |
14706 | else | |
14707 | { | |
14708 | /* In the absence of a source location, fall back to raw | |
14709 | address. Since there is no way to confirm that the address | |
14710 | means the same thing as when the trace was started, warn the | |
14711 | user. */ | |
3e43a32a MS |
14712 | warning (_("Uploaded tracepoint %d has no " |
14713 | "source location, using raw address"), | |
409873ef | 14714 | utp->number); |
8c042590 | 14715 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14716 | addr_str = small_buf; |
14717 | } | |
14718 | ||
14719 | /* There's not much we can do with a sequence of bytecodes. */ | |
14720 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14721 | warning (_("Uploaded tracepoint %d condition " |
14722 | "has no source form, ignoring it"), | |
409873ef | 14723 | utp->number); |
d5551862 | 14724 | |
ffc2605c TT |
14725 | event_location_up location = string_to_event_location (&addr_str, |
14726 | current_language); | |
8cdf0e15 | 14727 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14728 | location.get (), |
f00aae0f | 14729 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14730 | 0 /* parse cond/thread */, |
8cdf0e15 | 14731 | 0 /* tempflag */, |
0fb4aa4b | 14732 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14733 | 0 /* Ignore count */, |
14734 | pending_break_support, | |
348d480f | 14735 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14736 | 0 /* from_tty */, |
84f4c1fe | 14737 | utp->enabled /* enabled */, |
44f238bb PA |
14738 | 0 /* internal */, |
14739 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14740 | return NULL; |
fd9b8c24 | 14741 | |
409873ef | 14742 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14743 | tp = get_tracepoint (tracepoint_count); |
14744 | gdb_assert (tp != NULL); | |
d5551862 | 14745 | |
00bf0b85 SS |
14746 | if (utp->pass > 0) |
14747 | { | |
8c042590 | 14748 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14749 | tp->number); |
00bf0b85 | 14750 | |
409873ef | 14751 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14752 | } |
14753 | ||
409873ef SS |
14754 | /* If we have uploaded versions of the original commands, set up a |
14755 | special-purpose "reader" function and call the usual command line | |
14756 | reader, then pass the result to the breakpoint command-setting | |
14757 | function. */ | |
a18ba4e4 | 14758 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14759 | { |
12973681 | 14760 | counted_command_line cmd_list; |
00bf0b85 | 14761 | |
409873ef | 14762 | this_utp = utp; |
3149d8c1 | 14763 | next_cmd = 0; |
d5551862 | 14764 | |
60b3cef2 | 14765 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14766 | |
c1fc2657 | 14767 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14768 | } |
a18ba4e4 SM |
14769 | else if (!utp->actions.empty () |
14770 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14771 | warning (_("Uploaded tracepoint %d actions " |
14772 | "have no source form, ignoring them"), | |
409873ef | 14773 | utp->number); |
00bf0b85 | 14774 | |
f196051f | 14775 | /* Copy any status information that might be available. */ |
c1fc2657 | 14776 | tp->hit_count = utp->hit_count; |
f196051f SS |
14777 | tp->traceframe_usage = utp->traceframe_usage; |
14778 | ||
00bf0b85 | 14779 | return tp; |
d9b3f62e | 14780 | } |
00bf0b85 | 14781 | |
1042e4c0 SS |
14782 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14783 | omitted. */ | |
14784 | ||
14785 | static void | |
1d12d88f | 14786 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14787 | { |
79a45e25 | 14788 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14789 | int num_printed; |
1042e4c0 | 14790 | |
e5a67952 | 14791 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14792 | |
14793 | if (num_printed == 0) | |
1042e4c0 | 14794 | { |
e5a67952 | 14795 | if (args == NULL || *args == '\0') |
112e8700 | 14796 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14797 | else |
112e8700 | 14798 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14799 | } |
ad443146 SS |
14800 | |
14801 | default_collect_info (); | |
1042e4c0 SS |
14802 | } |
14803 | ||
4a64f543 | 14804 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14805 | Not supported by all targets. */ |
14806 | static void | |
5fed81ff | 14807 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14808 | { |
14809 | enable_command (args, from_tty); | |
14810 | } | |
14811 | ||
4a64f543 | 14812 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14813 | Not supported by all targets. */ |
14814 | static void | |
5fed81ff | 14815 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14816 | { |
14817 | disable_command (args, from_tty); | |
14818 | } | |
14819 | ||
4a64f543 | 14820 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14821 | static void |
4495129a | 14822 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14823 | { |
35df4500 | 14824 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14825 | |
14826 | dont_repeat (); | |
14827 | ||
14828 | if (arg == 0) | |
14829 | { | |
14830 | int breaks_to_delete = 0; | |
14831 | ||
14832 | /* Delete all breakpoints if no argument. | |
14833 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14834 | have to be deleted with an explicit breakpoint number |
14835 | argument. */ | |
1042e4c0 | 14836 | ALL_TRACEPOINTS (b) |
46c6471b | 14837 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14838 | { |
14839 | breaks_to_delete = 1; | |
14840 | break; | |
14841 | } | |
1042e4c0 SS |
14842 | |
14843 | /* Ask user only if there are some breakpoints to delete. */ | |
14844 | if (!from_tty | |
14845 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14846 | { | |
35df4500 | 14847 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14848 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14849 | delete_breakpoint (b); |
1042e4c0 SS |
14850 | } |
14851 | } | |
14852 | else | |
48649e1b | 14853 | map_breakpoint_numbers |
b926417a | 14854 | (arg, [&] (breakpoint *br) |
48649e1b | 14855 | { |
b926417a | 14856 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14857 | }); |
1042e4c0 SS |
14858 | } |
14859 | ||
197f0a60 TT |
14860 | /* Helper function for trace_pass_command. */ |
14861 | ||
14862 | static void | |
d9b3f62e | 14863 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14864 | { |
d9b3f62e | 14865 | tp->pass_count = count; |
76727919 | 14866 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14867 | if (from_tty) |
14868 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14869 | tp->number, count); |
197f0a60 TT |
14870 | } |
14871 | ||
1042e4c0 SS |
14872 | /* Set passcount for tracepoint. |
14873 | ||
14874 | First command argument is passcount, second is tracepoint number. | |
14875 | If tracepoint number omitted, apply to most recently defined. | |
14876 | Also accepts special argument "all". */ | |
14877 | ||
14878 | static void | |
0b39b52e | 14879 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14880 | { |
d9b3f62e | 14881 | struct tracepoint *t1; |
0b39b52e | 14882 | ULONGEST count; |
1042e4c0 SS |
14883 | |
14884 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14885 | error (_("passcount command requires an " |
14886 | "argument (count + optional TP num)")); | |
1042e4c0 | 14887 | |
0b39b52e | 14888 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14889 | |
529480d0 | 14890 | args = skip_spaces (args); |
1042e4c0 SS |
14891 | if (*args && strncasecmp (args, "all", 3) == 0) |
14892 | { | |
d9b3f62e PA |
14893 | struct breakpoint *b; |
14894 | ||
1042e4c0 | 14895 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14896 | if (*args) |
14897 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14898 | |
d9b3f62e | 14899 | ALL_TRACEPOINTS (b) |
197f0a60 | 14900 | { |
d9b3f62e | 14901 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14902 | trace_pass_set_count (t1, count, from_tty); |
14903 | } | |
14904 | } | |
14905 | else if (*args == '\0') | |
1042e4c0 | 14906 | { |
5fa1d40e | 14907 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14908 | if (t1) |
197f0a60 TT |
14909 | trace_pass_set_count (t1, count, from_tty); |
14910 | } | |
14911 | else | |
14912 | { | |
bfd28288 PA |
14913 | number_or_range_parser parser (args); |
14914 | while (!parser.finished ()) | |
1042e4c0 | 14915 | { |
bfd28288 | 14916 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14917 | if (t1) |
14918 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14919 | } |
14920 | } | |
1042e4c0 SS |
14921 | } |
14922 | ||
d9b3f62e | 14923 | struct tracepoint * |
1042e4c0 SS |
14924 | get_tracepoint (int num) |
14925 | { | |
14926 | struct breakpoint *t; | |
14927 | ||
14928 | ALL_TRACEPOINTS (t) | |
14929 | if (t->number == num) | |
d9b3f62e | 14930 | return (struct tracepoint *) t; |
1042e4c0 SS |
14931 | |
14932 | return NULL; | |
14933 | } | |
14934 | ||
d5551862 SS |
14935 | /* Find the tracepoint with the given target-side number (which may be |
14936 | different from the tracepoint number after disconnecting and | |
14937 | reconnecting). */ | |
14938 | ||
d9b3f62e | 14939 | struct tracepoint * |
d5551862 SS |
14940 | get_tracepoint_by_number_on_target (int num) |
14941 | { | |
d9b3f62e | 14942 | struct breakpoint *b; |
d5551862 | 14943 | |
d9b3f62e PA |
14944 | ALL_TRACEPOINTS (b) |
14945 | { | |
14946 | struct tracepoint *t = (struct tracepoint *) b; | |
14947 | ||
14948 | if (t->number_on_target == num) | |
14949 | return t; | |
14950 | } | |
d5551862 SS |
14951 | |
14952 | return NULL; | |
14953 | } | |
14954 | ||
1042e4c0 | 14955 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14956 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14957 | If the argument is missing, the most recent tracepoint |
14958 | (tracepoint_count) is returned. */ | |
14959 | ||
d9b3f62e | 14960 | struct tracepoint * |
0b39b52e | 14961 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14962 | number_or_range_parser *parser) |
1042e4c0 | 14963 | { |
1042e4c0 SS |
14964 | struct breakpoint *t; |
14965 | int tpnum; | |
0b39b52e | 14966 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14967 | |
bfd28288 | 14968 | if (parser != NULL) |
197f0a60 | 14969 | { |
bfd28288 PA |
14970 | gdb_assert (!parser->finished ()); |
14971 | tpnum = parser->get_number (); | |
197f0a60 TT |
14972 | } |
14973 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14974 | tpnum = tracepoint_count; |
1042e4c0 | 14975 | else |
197f0a60 | 14976 | tpnum = get_number (arg); |
1042e4c0 SS |
14977 | |
14978 | if (tpnum <= 0) | |
14979 | { | |
14980 | if (instring && *instring) | |
14981 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14982 | instring); | |
14983 | else | |
5fa1d40e | 14984 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14985 | return NULL; |
14986 | } | |
14987 | ||
14988 | ALL_TRACEPOINTS (t) | |
14989 | if (t->number == tpnum) | |
14990 | { | |
d9b3f62e | 14991 | return (struct tracepoint *) t; |
1042e4c0 SS |
14992 | } |
14993 | ||
1042e4c0 SS |
14994 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14995 | return NULL; | |
14996 | } | |
14997 | ||
d9b3f62e PA |
14998 | void |
14999 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15000 | { | |
15001 | if (b->thread != -1) | |
15002 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15003 | ||
15004 | if (b->task != 0) | |
15005 | fprintf_unfiltered (fp, " task %d", b->task); | |
15006 | ||
15007 | fprintf_unfiltered (fp, "\n"); | |
15008 | } | |
15009 | ||
6149aea9 PA |
15010 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15011 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15012 | on each breakpoint and only include the ones for which it returns | |
15013 | non-zero. */ | |
15014 | ||
1042e4c0 | 15015 | static void |
4495129a | 15016 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15017 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15018 | { |
15019 | struct breakpoint *tp; | |
6149aea9 | 15020 | int any = 0; |
6149aea9 | 15021 | int extra_trace_bits = 0; |
1042e4c0 | 15022 | |
6149aea9 PA |
15023 | if (filename == 0 || *filename == 0) |
15024 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15025 | |
15026 | /* See if we have anything to save. */ | |
6149aea9 | 15027 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15028 | { |
6149aea9 | 15029 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15030 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15031 | continue; |
15032 | ||
15033 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15034 | if (filter && !filter (tp)) | |
15035 | continue; | |
15036 | ||
15037 | any = 1; | |
15038 | ||
15039 | if (is_tracepoint (tp)) | |
15040 | { | |
15041 | extra_trace_bits = 1; | |
15042 | ||
15043 | /* We can stop searching. */ | |
15044 | break; | |
15045 | } | |
1042e4c0 | 15046 | } |
6149aea9 PA |
15047 | |
15048 | if (!any) | |
1042e4c0 | 15049 | { |
6149aea9 | 15050 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15051 | return; |
15052 | } | |
15053 | ||
ee0c3293 | 15054 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15055 | |
15056 | stdio_file fp; | |
15057 | ||
ee0c3293 | 15058 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15059 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15060 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15061 | |
6149aea9 | 15062 | if (extra_trace_bits) |
d7e74731 | 15063 | save_trace_state_variables (&fp); |
8bf6485c | 15064 | |
6149aea9 | 15065 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15066 | { |
6149aea9 | 15067 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15068 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15069 | continue; |
8bf6485c | 15070 | |
6149aea9 PA |
15071 | /* If we have a filter, only save the breakpoints it accepts. */ |
15072 | if (filter && !filter (tp)) | |
15073 | continue; | |
15074 | ||
d7e74731 | 15075 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15076 | |
6149aea9 PA |
15077 | /* Note, we can't rely on tp->number for anything, as we can't |
15078 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15079 | instead. */ | |
15080 | ||
15081 | if (tp->cond_string) | |
d7e74731 | 15082 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15083 | |
15084 | if (tp->ignore_count) | |
d7e74731 | 15085 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15086 | |
2d9442cc | 15087 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15088 | { |
d7e74731 | 15089 | fp.puts (" commands\n"); |
a7bdde9e | 15090 | |
d7e74731 | 15091 | current_uiout->redirect (&fp); |
492d29ea | 15092 | TRY |
1042e4c0 | 15093 | { |
d1b0a7bf | 15094 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15095 | } |
492d29ea PA |
15096 | CATCH (ex, RETURN_MASK_ALL) |
15097 | { | |
112e8700 | 15098 | current_uiout->redirect (NULL); |
492d29ea PA |
15099 | throw_exception (ex); |
15100 | } | |
15101 | END_CATCH | |
1042e4c0 | 15102 | |
112e8700 | 15103 | current_uiout->redirect (NULL); |
d7e74731 | 15104 | fp.puts (" end\n"); |
1042e4c0 | 15105 | } |
6149aea9 PA |
15106 | |
15107 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15108 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15109 | |
15110 | /* If this is a multi-location breakpoint, check if the locations | |
15111 | should be individually disabled. Watchpoint locations are | |
15112 | special, and not user visible. */ | |
15113 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15114 | { | |
15115 | struct bp_location *loc; | |
15116 | int n = 1; | |
15117 | ||
15118 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15119 | if (!loc->enabled) | |
d7e74731 | 15120 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15121 | } |
1042e4c0 | 15122 | } |
8bf6485c | 15123 | |
6149aea9 | 15124 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15125 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15126 | |
1042e4c0 | 15127 | if (from_tty) |
ee0c3293 | 15128 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15129 | } |
15130 | ||
15131 | /* The `save breakpoints' command. */ | |
15132 | ||
15133 | static void | |
4495129a | 15134 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15135 | { |
15136 | save_breakpoints (args, from_tty, NULL); | |
15137 | } | |
15138 | ||
15139 | /* The `save tracepoints' command. */ | |
15140 | ||
15141 | static void | |
4495129a | 15142 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15143 | { |
15144 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15145 | } |
15146 | ||
15147 | /* Create a vector of all tracepoints. */ | |
15148 | ||
f51e0e20 | 15149 | std::vector<breakpoint *> |
eeae04df | 15150 | all_tracepoints (void) |
1042e4c0 | 15151 | { |
f51e0e20 | 15152 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15153 | struct breakpoint *tp; |
15154 | ||
15155 | ALL_TRACEPOINTS (tp) | |
15156 | { | |
f51e0e20 | 15157 | tp_vec.push_back (tp); |
1042e4c0 SS |
15158 | } |
15159 | ||
15160 | return tp_vec; | |
15161 | } | |
15162 | ||
c906108c | 15163 | \f |
629500fa KS |
15164 | /* This help string is used to consolidate all the help string for specifying |
15165 | locations used by several commands. */ | |
15166 | ||
15167 | #define LOCATION_HELP_STRING \ | |
15168 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15169 | source filename, function name, label name, and line number.\n\ | |
15170 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15171 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15172 | \"factorial.c:fact:the_top\".\n\ | |
15173 | \n\ | |
15174 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15175 | program. Example: To specify the fourth byte past the start function\n\ | |
15176 | \"main\", use \"*main + 4\".\n\ | |
15177 | \n\ | |
15178 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15179 | syntax to specify location parameters.\n\ | |
15180 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15181 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15182 | -function fact -label the_top\".\n\ |
15183 | \n\ | |
15184 | By default, a specified function is matched against the program's\n\ | |
15185 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15186 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15187 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15188 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15189 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15190 | |
4a64f543 MS |
15191 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15192 | commands. It is defined as a macro to prevent duplication. | |
15193 | COMMAND should be a string constant containing the name of the | |
15194 | command. */ | |
629500fa | 15195 | |
31e2b00f | 15196 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15197 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15198 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15199 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15200 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15201 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15202 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15203 | below.\n\ | |
15204 | \n\ | |
dc10affe PA |
15205 | With no LOCATION, uses current execution address of the selected\n\ |
15206 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15207 | \n\ |
15208 | THREADNUM is the number from \"info threads\".\n\ | |
15209 | CONDITION is a boolean expression.\n\ | |
629500fa | 15210 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15211 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15212 | conditions are different.\n\ | |
31e2b00f AS |
15213 | \n\ |
15214 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15215 | ||
44feb3ce TT |
15216 | /* List of subcommands for "catch". */ |
15217 | static struct cmd_list_element *catch_cmdlist; | |
15218 | ||
15219 | /* List of subcommands for "tcatch". */ | |
15220 | static struct cmd_list_element *tcatch_cmdlist; | |
15221 | ||
9ac4176b | 15222 | void |
a121b7c1 | 15223 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15224 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15225 | completer_ftype *completer, |
44feb3ce TT |
15226 | void *user_data_catch, |
15227 | void *user_data_tcatch) | |
15228 | { | |
15229 | struct cmd_list_element *command; | |
15230 | ||
0450cc4c | 15231 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15232 | &catch_cmdlist); |
15233 | set_cmd_sfunc (command, sfunc); | |
15234 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15235 | set_cmd_completer (command, completer); |
44feb3ce | 15236 | |
0450cc4c | 15237 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15238 | &tcatch_cmdlist); |
15239 | set_cmd_sfunc (command, sfunc); | |
15240 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15241 | set_cmd_completer (command, completer); |
44feb3ce TT |
15242 | } |
15243 | ||
6149aea9 | 15244 | static void |
981a3fb3 | 15245 | save_command (const char *arg, int from_tty) |
6149aea9 | 15246 | { |
3e43a32a MS |
15247 | printf_unfiltered (_("\"save\" must be followed by " |
15248 | "the name of a save subcommand.\n")); | |
635c7e8a | 15249 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15250 | } |
15251 | ||
84f4c1fe PM |
15252 | struct breakpoint * |
15253 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15254 | void *data) | |
15255 | { | |
35df4500 | 15256 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15257 | |
35df4500 | 15258 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15259 | { |
15260 | if ((*callback) (b, data)) | |
15261 | return b; | |
15262 | } | |
15263 | ||
15264 | return NULL; | |
15265 | } | |
15266 | ||
0574c78f GB |
15267 | /* Zero if any of the breakpoint's locations could be a location where |
15268 | functions have been inlined, nonzero otherwise. */ | |
15269 | ||
15270 | static int | |
15271 | is_non_inline_function (struct breakpoint *b) | |
15272 | { | |
15273 | /* The shared library event breakpoint is set on the address of a | |
15274 | non-inline function. */ | |
15275 | if (b->type == bp_shlib_event) | |
15276 | return 1; | |
15277 | ||
15278 | return 0; | |
15279 | } | |
15280 | ||
15281 | /* Nonzero if the specified PC cannot be a location where functions | |
15282 | have been inlined. */ | |
15283 | ||
15284 | int | |
accd0bcd | 15285 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15286 | const struct target_waitstatus *ws) |
0574c78f GB |
15287 | { |
15288 | struct breakpoint *b; | |
15289 | struct bp_location *bl; | |
15290 | ||
15291 | ALL_BREAKPOINTS (b) | |
15292 | { | |
15293 | if (!is_non_inline_function (b)) | |
15294 | continue; | |
15295 | ||
15296 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15297 | { | |
15298 | if (!bl->shlib_disabled | |
09ac7c10 | 15299 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15300 | return 1; |
15301 | } | |
15302 | } | |
15303 | ||
15304 | return 0; | |
15305 | } | |
15306 | ||
2f202fde JK |
15307 | /* Remove any references to OBJFILE which is going to be freed. */ |
15308 | ||
15309 | void | |
15310 | breakpoint_free_objfile (struct objfile *objfile) | |
15311 | { | |
15312 | struct bp_location **locp, *loc; | |
15313 | ||
15314 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15315 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15316 | loc->symtab = NULL; |
15317 | } | |
15318 | ||
2060206e PA |
15319 | void |
15320 | initialize_breakpoint_ops (void) | |
15321 | { | |
15322 | static int initialized = 0; | |
15323 | ||
15324 | struct breakpoint_ops *ops; | |
15325 | ||
15326 | if (initialized) | |
15327 | return; | |
15328 | initialized = 1; | |
15329 | ||
15330 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15331 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15332 | internal and momentary breakpoints, etc.). */ | |
15333 | ops = &bkpt_base_breakpoint_ops; | |
15334 | *ops = base_breakpoint_ops; | |
15335 | ops->re_set = bkpt_re_set; | |
15336 | ops->insert_location = bkpt_insert_location; | |
15337 | ops->remove_location = bkpt_remove_location; | |
15338 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15339 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15340 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15341 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15342 | |
15343 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15344 | ops = &bkpt_breakpoint_ops; | |
15345 | *ops = bkpt_base_breakpoint_ops; | |
15346 | ops->re_set = bkpt_re_set; | |
15347 | ops->resources_needed = bkpt_resources_needed; | |
15348 | ops->print_it = bkpt_print_it; | |
15349 | ops->print_mention = bkpt_print_mention; | |
15350 | ops->print_recreate = bkpt_print_recreate; | |
15351 | ||
15352 | /* Ranged breakpoints. */ | |
15353 | ops = &ranged_breakpoint_ops; | |
15354 | *ops = bkpt_breakpoint_ops; | |
15355 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15356 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15357 | ops->print_it = print_it_ranged_breakpoint; | |
15358 | ops->print_one = print_one_ranged_breakpoint; | |
15359 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15360 | ops->print_mention = print_mention_ranged_breakpoint; | |
15361 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15362 | ||
15363 | /* Internal breakpoints. */ | |
15364 | ops = &internal_breakpoint_ops; | |
15365 | *ops = bkpt_base_breakpoint_ops; | |
15366 | ops->re_set = internal_bkpt_re_set; | |
15367 | ops->check_status = internal_bkpt_check_status; | |
15368 | ops->print_it = internal_bkpt_print_it; | |
15369 | ops->print_mention = internal_bkpt_print_mention; | |
15370 | ||
15371 | /* Momentary breakpoints. */ | |
15372 | ops = &momentary_breakpoint_ops; | |
15373 | *ops = bkpt_base_breakpoint_ops; | |
15374 | ops->re_set = momentary_bkpt_re_set; | |
15375 | ops->check_status = momentary_bkpt_check_status; | |
15376 | ops->print_it = momentary_bkpt_print_it; | |
15377 | ops->print_mention = momentary_bkpt_print_mention; | |
15378 | ||
55aa24fb SDJ |
15379 | /* Probe breakpoints. */ |
15380 | ops = &bkpt_probe_breakpoint_ops; | |
15381 | *ops = bkpt_breakpoint_ops; | |
15382 | ops->insert_location = bkpt_probe_insert_location; | |
15383 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15384 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15385 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15386 | |
2060206e PA |
15387 | /* Watchpoints. */ |
15388 | ops = &watchpoint_breakpoint_ops; | |
15389 | *ops = base_breakpoint_ops; | |
15390 | ops->re_set = re_set_watchpoint; | |
15391 | ops->insert_location = insert_watchpoint; | |
15392 | ops->remove_location = remove_watchpoint; | |
15393 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15394 | ops->check_status = check_status_watchpoint; | |
15395 | ops->resources_needed = resources_needed_watchpoint; | |
15396 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15397 | ops->print_it = print_it_watchpoint; | |
15398 | ops->print_mention = print_mention_watchpoint; | |
15399 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15400 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15401 | |
15402 | /* Masked watchpoints. */ | |
15403 | ops = &masked_watchpoint_breakpoint_ops; | |
15404 | *ops = watchpoint_breakpoint_ops; | |
15405 | ops->insert_location = insert_masked_watchpoint; | |
15406 | ops->remove_location = remove_masked_watchpoint; | |
15407 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15408 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15409 | ops->print_it = print_it_masked_watchpoint; | |
15410 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15411 | ops->print_mention = print_mention_masked_watchpoint; | |
15412 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15413 | ||
15414 | /* Tracepoints. */ | |
15415 | ops = &tracepoint_breakpoint_ops; | |
15416 | *ops = base_breakpoint_ops; | |
15417 | ops->re_set = tracepoint_re_set; | |
15418 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15419 | ops->print_one_detail = tracepoint_print_one_detail; | |
15420 | ops->print_mention = tracepoint_print_mention; | |
15421 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15422 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15423 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15424 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15425 | |
55aa24fb SDJ |
15426 | /* Probe tracepoints. */ |
15427 | ops = &tracepoint_probe_breakpoint_ops; | |
15428 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15429 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15430 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15431 | |
983af33b SDJ |
15432 | /* Static tracepoints with marker (`-m'). */ |
15433 | ops = &strace_marker_breakpoint_ops; | |
15434 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15435 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15436 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15437 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15438 | |
15439 | /* Fork catchpoints. */ | |
15440 | ops = &catch_fork_breakpoint_ops; | |
15441 | *ops = base_breakpoint_ops; | |
15442 | ops->insert_location = insert_catch_fork; | |
15443 | ops->remove_location = remove_catch_fork; | |
15444 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15445 | ops->print_it = print_it_catch_fork; | |
15446 | ops->print_one = print_one_catch_fork; | |
15447 | ops->print_mention = print_mention_catch_fork; | |
15448 | ops->print_recreate = print_recreate_catch_fork; | |
15449 | ||
15450 | /* Vfork catchpoints. */ | |
15451 | ops = &catch_vfork_breakpoint_ops; | |
15452 | *ops = base_breakpoint_ops; | |
15453 | ops->insert_location = insert_catch_vfork; | |
15454 | ops->remove_location = remove_catch_vfork; | |
15455 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15456 | ops->print_it = print_it_catch_vfork; | |
15457 | ops->print_one = print_one_catch_vfork; | |
15458 | ops->print_mention = print_mention_catch_vfork; | |
15459 | ops->print_recreate = print_recreate_catch_vfork; | |
15460 | ||
15461 | /* Exec catchpoints. */ | |
15462 | ops = &catch_exec_breakpoint_ops; | |
15463 | *ops = base_breakpoint_ops; | |
2060206e PA |
15464 | ops->insert_location = insert_catch_exec; |
15465 | ops->remove_location = remove_catch_exec; | |
15466 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15467 | ops->print_it = print_it_catch_exec; | |
15468 | ops->print_one = print_one_catch_exec; | |
15469 | ops->print_mention = print_mention_catch_exec; | |
15470 | ops->print_recreate = print_recreate_catch_exec; | |
15471 | ||
edcc5120 TT |
15472 | /* Solib-related catchpoints. */ |
15473 | ops = &catch_solib_breakpoint_ops; | |
15474 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15475 | ops->insert_location = insert_catch_solib; |
15476 | ops->remove_location = remove_catch_solib; | |
15477 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15478 | ops->check_status = check_status_catch_solib; | |
15479 | ops->print_it = print_it_catch_solib; | |
15480 | ops->print_one = print_one_catch_solib; | |
15481 | ops->print_mention = print_mention_catch_solib; | |
15482 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15483 | |
15484 | ops = &dprintf_breakpoint_ops; | |
15485 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15486 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15487 | ops->resources_needed = bkpt_resources_needed; |
15488 | ops->print_it = bkpt_print_it; | |
15489 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15490 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15491 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15492 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15493 | } |
15494 | ||
8bfd80db YQ |
15495 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15496 | ||
15497 | static struct cmd_list_element *enablebreaklist = NULL; | |
15498 | ||
8588b356 SM |
15499 | /* See breakpoint.h. */ |
15500 | ||
15501 | cmd_list_element *commands_cmd_element = nullptr; | |
15502 | ||
c906108c | 15503 | void |
fba45db2 | 15504 | _initialize_breakpoint (void) |
c906108c SS |
15505 | { |
15506 | struct cmd_list_element *c; | |
15507 | ||
2060206e PA |
15508 | initialize_breakpoint_ops (); |
15509 | ||
76727919 TT |
15510 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15511 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15512 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15513 | |
55aa24fb | 15514 | breakpoint_objfile_key |
43dce439 | 15515 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15516 | |
c906108c SS |
15517 | breakpoint_chain = 0; |
15518 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15519 | before a breakpoint is set. */ | |
15520 | breakpoint_count = 0; | |
15521 | ||
1042e4c0 SS |
15522 | tracepoint_count = 0; |
15523 | ||
1bedd215 AC |
15524 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15525 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15526 | Usage is `ignore N COUNT'.")); | |
c906108c | 15527 | |
8588b356 SM |
15528 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15529 | commands_command, _("\ | |
18da0c51 MG |
15530 | Set commands to be executed when the given breakpoints are hit.\n\ |
15531 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15532 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15533 | (e.g. `5-7').\n\ | |
c906108c SS |
15534 | With no argument, the targeted breakpoint is the last one set.\n\ |
15535 | The commands themselves follow starting on the next line.\n\ | |
15536 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15537 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15538 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15539 | |
d55637df | 15540 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15541 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15542 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15543 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15544 | set_cmd_completer (c, condition_completer); |
c906108c | 15545 | |
1bedd215 | 15546 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15547 | Set a temporary breakpoint.\n\ |
c906108c SS |
15548 | Like \"break\" except the breakpoint is only temporary,\n\ |
15549 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15550 | by using \"enable delete\" on the breakpoint number.\n\ |
15551 | \n" | |
15552 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15553 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15554 | |
1bedd215 | 15555 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15556 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15557 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15558 | some target hardware may not have this support.\n\ |
15559 | \n" | |
15560 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15561 | set_cmd_completer (c, location_completer); |
c906108c | 15562 | |
1bedd215 | 15563 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15564 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15565 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15566 | so it will be deleted when hit.\n\ |
15567 | \n" | |
15568 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15569 | set_cmd_completer (c, location_completer); |
c906108c | 15570 | |
1bedd215 AC |
15571 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15572 | Enable some breakpoints.\n\ | |
c906108c SS |
15573 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15574 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15575 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15576 | With a subcommand you can enable temporarily."), |
c906108c | 15577 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15578 | |
15579 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15580 | ||
84951ab5 | 15581 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15582 | Enable some breakpoints.\n\ |
c906108c SS |
15583 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15584 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15585 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15586 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15587 | |
1a966eab AC |
15588 | add_cmd ("once", no_class, enable_once_command, _("\ |
15589 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15590 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15591 | &enablebreaklist); |
15592 | ||
1a966eab AC |
15593 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15594 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15595 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15596 | &enablebreaklist); |
15597 | ||
816338b5 SS |
15598 | add_cmd ("count", no_class, enable_count_command, _("\ |
15599 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15600 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15601 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15602 | &enablebreaklist); | |
15603 | ||
1a966eab AC |
15604 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15605 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15606 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15607 | &enablelist); |
15608 | ||
1a966eab AC |
15609 | add_cmd ("once", no_class, enable_once_command, _("\ |
15610 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15611 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15612 | &enablelist); |
15613 | ||
15614 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15615 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15616 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15617 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15618 | &enablelist); |
15619 | ||
1bedd215 AC |
15620 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15621 | Disable some breakpoints.\n\ | |
c906108c SS |
15622 | Arguments are breakpoint numbers with spaces in between.\n\ |
15623 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15624 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15625 | &disablelist, "disable ", 1, &cmdlist); |
15626 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15627 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15628 | |
1a966eab AC |
15629 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15630 | Disable some breakpoints.\n\ | |
c906108c SS |
15631 | Arguments are breakpoint numbers with spaces in between.\n\ |
15632 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15633 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15634 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15635 | &disablelist); |
15636 | ||
1bedd215 AC |
15637 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15638 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15639 | Arguments are breakpoint numbers with spaces in between.\n\ |
15640 | To delete all breakpoints, give no argument.\n\ | |
15641 | \n\ | |
15642 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15643 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15644 | &deletelist, "delete ", 1, &cmdlist); |
15645 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15646 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15647 | |
1a966eab AC |
15648 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15649 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15650 | Arguments are breakpoint numbers with spaces in between.\n\ |
15651 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15652 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15653 | &deletelist); |
15654 | ||
1bedd215 | 15655 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15656 | Clear breakpoint at specified location.\n\ |
15657 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15658 | \n\ |
15659 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15660 | is executing in.\n" |
15661 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15662 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15663 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15664 | |
1bedd215 | 15665 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15666 | Set breakpoint at specified location.\n" |
31e2b00f | 15667 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15668 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15669 | |
c906108c SS |
15670 | add_com_alias ("b", "break", class_run, 1); |
15671 | add_com_alias ("br", "break", class_run, 1); | |
15672 | add_com_alias ("bre", "break", class_run, 1); | |
15673 | add_com_alias ("brea", "break", class_run, 1); | |
15674 | ||
c906108c SS |
15675 | if (dbx_commands) |
15676 | { | |
1bedd215 AC |
15677 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15678 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15679 | &stoplist, "stop ", 1, &cmdlist); |
15680 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15681 | _("Break in function or address."), &stoplist); |
c5aa993b | 15682 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15683 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15684 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15685 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15686 | The \"Type\" column indicates one of:\n\ |
15687 | \tbreakpoint - normal breakpoint\n\ | |
15688 | \twatchpoint - watchpoint\n\ | |
15689 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15690 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15691 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15692 | address and file/line number respectively.\n\ |
15693 | \n\ | |
15694 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15695 | are set to the address of the last breakpoint listed unless the command\n\ |
15696 | is prefixed with \"server \".\n\n\ | |
c906108c | 15697 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15698 | breakpoint set.")); |
c906108c SS |
15699 | } |
15700 | ||
11db9430 | 15701 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15702 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15703 | The \"Type\" column indicates one of:\n\ |
15704 | \tbreakpoint - normal breakpoint\n\ | |
15705 | \twatchpoint - watchpoint\n\ | |
15706 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15707 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15708 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15709 | address and file/line number respectively.\n\ |
15710 | \n\ | |
15711 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15712 | are set to the address of the last breakpoint listed unless the command\n\ |
15713 | is prefixed with \"server \".\n\n\ | |
c906108c | 15714 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15715 | breakpoint set.")); |
c906108c | 15716 | |
6b04bdb7 MS |
15717 | add_info_alias ("b", "breakpoints", 1); |
15718 | ||
1a966eab AC |
15719 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15720 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15721 | The \"Type\" column indicates one of:\n\ |
15722 | \tbreakpoint - normal breakpoint\n\ | |
15723 | \twatchpoint - watchpoint\n\ | |
15724 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15725 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15726 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15727 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15728 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15729 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15730 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15731 | address and file/line number respectively.\n\ |
15732 | \n\ | |
15733 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15734 | are set to the address of the last breakpoint listed unless the command\n\ |
15735 | is prefixed with \"server \".\n\n\ | |
c906108c | 15736 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15737 | breakpoint set."), |
c906108c SS |
15738 | &maintenanceinfolist); |
15739 | ||
44feb3ce TT |
15740 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15741 | Set catchpoints to catch events."), | |
15742 | &catch_cmdlist, "catch ", | |
15743 | 0/*allow-unknown*/, &cmdlist); | |
15744 | ||
15745 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15746 | Set temporary catchpoints to catch events."), | |
15747 | &tcatch_cmdlist, "tcatch ", | |
15748 | 0/*allow-unknown*/, &cmdlist); | |
15749 | ||
44feb3ce TT |
15750 | add_catch_command ("fork", _("Catch calls to fork."), |
15751 | catch_fork_command_1, | |
a96d9b2e | 15752 | NULL, |
44feb3ce TT |
15753 | (void *) (uintptr_t) catch_fork_permanent, |
15754 | (void *) (uintptr_t) catch_fork_temporary); | |
15755 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15756 | catch_fork_command_1, | |
a96d9b2e | 15757 | NULL, |
44feb3ce TT |
15758 | (void *) (uintptr_t) catch_vfork_permanent, |
15759 | (void *) (uintptr_t) catch_vfork_temporary); | |
15760 | add_catch_command ("exec", _("Catch calls to exec."), | |
15761 | catch_exec_command_1, | |
a96d9b2e SDJ |
15762 | NULL, |
15763 | CATCH_PERMANENT, | |
15764 | CATCH_TEMPORARY); | |
edcc5120 TT |
15765 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15766 | Usage: catch load [REGEX]\n\ | |
15767 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15768 | catch_load_command_1, | |
15769 | NULL, | |
15770 | CATCH_PERMANENT, | |
15771 | CATCH_TEMPORARY); | |
15772 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15773 | Usage: catch unload [REGEX]\n\ | |
15774 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15775 | catch_unload_command_1, | |
15776 | NULL, | |
15777 | CATCH_PERMANENT, | |
15778 | CATCH_TEMPORARY); | |
c5aa993b | 15779 | |
1bedd215 AC |
15780 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15781 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15782 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15783 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15784 | an expression changes.\n\ |
15785 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15786 | the memory to which it refers.")); | |
65d12d83 | 15787 | set_cmd_completer (c, expression_completer); |
c906108c | 15788 | |
1bedd215 AC |
15789 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15790 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15791 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15792 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15793 | an expression is read.\n\ |
15794 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15795 | the memory to which it refers.")); | |
65d12d83 | 15796 | set_cmd_completer (c, expression_completer); |
c906108c | 15797 | |
1bedd215 AC |
15798 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15799 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15800 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15801 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15802 | an expression is either read or written.\n\ |
15803 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15804 | the memory to which it refers.")); | |
65d12d83 | 15805 | set_cmd_completer (c, expression_completer); |
c906108c | 15806 | |
11db9430 | 15807 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15808 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15809 | |
920d2a44 AC |
15810 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15811 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15812 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15813 | &can_use_hw_watchpoints, _("\ | |
15814 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15815 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15816 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15817 | such is available. (However, any hardware watchpoints that were\n\ | |
15818 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15819 | hardware.)"), |
15820 | NULL, | |
920d2a44 | 15821 | show_can_use_hw_watchpoints, |
85c07804 | 15822 | &setlist, &showlist); |
c906108c SS |
15823 | |
15824 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15825 | |
1042e4c0 SS |
15826 | /* Tracepoint manipulation commands. */ |
15827 | ||
15828 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15829 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15830 | \n" |
15831 | BREAK_ARGS_HELP ("trace") "\n\ | |
15832 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15833 | set_cmd_completer (c, location_completer); | |
15834 | ||
15835 | add_com_alias ("tp", "trace", class_alias, 0); | |
15836 | add_com_alias ("tr", "trace", class_alias, 1); | |
15837 | add_com_alias ("tra", "trace", class_alias, 1); | |
15838 | add_com_alias ("trac", "trace", class_alias, 1); | |
15839 | ||
7a697b8d | 15840 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15841 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15842 | \n" |
15843 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15844 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15845 | set_cmd_completer (c, location_completer); | |
15846 | ||
0fb4aa4b | 15847 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15848 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15849 | \n\ |
15850 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15851 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15852 | or -m MARKER_ID.\n\n\ | |
15853 | If a marker id is specified, probe the marker with that name. With\n\ | |
15854 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15855 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15856 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15857 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15858 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15859 | \n\ | |
15860 | CONDITION is a boolean expression.\n\ | |
629500fa | 15861 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15862 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15863 | conditions are different.\n\ | |
0fb4aa4b PA |
15864 | \n\ |
15865 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15866 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15867 | set_cmd_completer (c, location_completer); | |
15868 | ||
11db9430 | 15869 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15870 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15871 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15872 | last tracepoint set.")); | |
15873 | ||
15874 | add_info_alias ("tp", "tracepoints", 1); | |
15875 | ||
15876 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15877 | Delete specified tracepoints.\n\ | |
15878 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15879 | No argument means delete all tracepoints."), | |
15880 | &deletelist); | |
7e20dfcd | 15881 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15882 | |
15883 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15884 | Disable specified tracepoints.\n\ | |
15885 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15886 | No argument means disable all tracepoints."), | |
15887 | &disablelist); | |
15888 | deprecate_cmd (c, "disable"); | |
15889 | ||
15890 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15891 | Enable specified tracepoints.\n\ | |
15892 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15893 | No argument means enable all tracepoints."), | |
15894 | &enablelist); | |
15895 | deprecate_cmd (c, "enable"); | |
15896 | ||
15897 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15898 | Set the passcount for a tracepoint.\n\ | |
15899 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15900 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15901 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15902 | ||
6149aea9 PA |
15903 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15904 | _("Save breakpoint definitions as a script."), | |
15905 | &save_cmdlist, "save ", | |
15906 | 0/*allow-unknown*/, &cmdlist); | |
15907 | ||
15908 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15909 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15910 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15911 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15912 | session to restore them."), | |
15913 | &save_cmdlist); | |
15914 | set_cmd_completer (c, filename_completer); | |
15915 | ||
15916 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15917 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15918 | Use the 'source' command in another debug session to restore them."), |
15919 | &save_cmdlist); | |
1042e4c0 SS |
15920 | set_cmd_completer (c, filename_completer); |
15921 | ||
6149aea9 PA |
15922 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15923 | deprecate_cmd (c, "save tracepoints"); | |
15924 | ||
1bedd215 | 15925 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15926 | Breakpoint specific settings\n\ |
15927 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15928 | pending breakpoint behavior"), |
fa8d40ab JJ |
15929 | &breakpoint_set_cmdlist, "set breakpoint ", |
15930 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15931 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15932 | Breakpoint specific settings\n\ |
15933 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15934 | pending breakpoint behavior"), |
fa8d40ab JJ |
15935 | &breakpoint_show_cmdlist, "show breakpoint ", |
15936 | 0/*allow-unknown*/, &showlist); | |
15937 | ||
7915a72c AC |
15938 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15939 | &pending_break_support, _("\ | |
15940 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15941 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15942 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15943 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15944 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15945 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15946 | NULL, |
920d2a44 | 15947 | show_pending_break_support, |
6e1d7d6c AC |
15948 | &breakpoint_set_cmdlist, |
15949 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15950 | |
15951 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15952 | |
15953 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15954 | &automatic_hardware_breakpoints, _("\ | |
15955 | Set automatic usage of hardware breakpoints."), _("\ | |
15956 | Show automatic usage of hardware breakpoints."), _("\ | |
15957 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15958 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15959 | a warning will be emitted for such breakpoints."), | |
15960 | NULL, | |
15961 | show_automatic_hardware_breakpoints, | |
15962 | &breakpoint_set_cmdlist, | |
15963 | &breakpoint_show_cmdlist); | |
74960c60 | 15964 | |
a25a5a45 PA |
15965 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15966 | &always_inserted_mode, _("\ | |
74960c60 VP |
15967 | Set mode for inserting breakpoints."), _("\ |
15968 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15969 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15970 | they're created, kept inserted even when execution stops, and removed\n\ | |
15971 | only when the user deletes them. When this mode is off (the default),\n\ | |
15972 | breakpoints are inserted only when execution continues, and removed\n\ | |
15973 | when execution stops."), | |
72d0e2c5 YQ |
15974 | NULL, |
15975 | &show_always_inserted_mode, | |
15976 | &breakpoint_set_cmdlist, | |
15977 | &breakpoint_show_cmdlist); | |
f1310107 | 15978 | |
b775012e LM |
15979 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15980 | condition_evaluation_enums, | |
15981 | &condition_evaluation_mode_1, _("\ | |
15982 | Set mode of breakpoint condition evaluation."), _("\ | |
15983 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15984 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15985 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15986 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15987 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15988 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15989 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15990 | be set to \"gdb\""), | |
15991 | &set_condition_evaluation_mode, | |
15992 | &show_condition_evaluation_mode, | |
15993 | &breakpoint_set_cmdlist, | |
15994 | &breakpoint_show_cmdlist); | |
15995 | ||
f1310107 TJB |
15996 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15997 | Set a breakpoint for an address range.\n\ | |
15998 | break-range START-LOCATION, END-LOCATION\n\ | |
15999 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16000 | LINENUM, for that line in the current file,\n\ | |
16001 | FILE:LINENUM, for that line in that file,\n\ | |
16002 | +OFFSET, for that number of lines after the current line\n\ | |
16003 | or the start of the range\n\ | |
16004 | FUNCTION, for the first line in that function,\n\ | |
16005 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16006 | *ADDRESS, for the instruction at that address.\n\ | |
16007 | \n\ | |
16008 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16009 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16010 | range (including START-LOCATION and END-LOCATION).")); | |
16011 | ||
e7e0cddf | 16012 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16013 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16014 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16015 | location may be a linespec, explicit, or address location.\n" |
16016 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16017 | set_cmd_completer (c, location_completer); |
16018 | ||
16019 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16020 | dprintf_style_enums, &dprintf_style, _("\ | |
16021 | Set the style of usage for dynamic printf."), _("\ | |
16022 | Show the style of usage for dynamic printf."), _("\ | |
16023 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16024 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16025 | console, as with the \"printf\" command.\n\ | |
16026 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16027 | program; by default printf(), but you can choose a different function or\n\ | |
16028 | output stream by setting dprintf-function and dprintf-channel."), | |
16029 | update_dprintf_commands, NULL, | |
16030 | &setlist, &showlist); | |
16031 | ||
16032 | dprintf_function = xstrdup ("printf"); | |
16033 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16034 | &dprintf_function, _("\ | |
16035 | Set the function to use for dynamic printf"), _("\ | |
16036 | Show the function to use for dynamic printf"), NULL, | |
16037 | update_dprintf_commands, NULL, | |
16038 | &setlist, &showlist); | |
16039 | ||
16040 | dprintf_channel = xstrdup (""); | |
16041 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16042 | &dprintf_channel, _("\ | |
16043 | Set the channel to use for dynamic printf"), _("\ | |
16044 | Show the channel to use for dynamic printf"), NULL, | |
16045 | update_dprintf_commands, NULL, | |
16046 | &setlist, &showlist); | |
16047 | ||
d3ce09f5 SS |
16048 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16049 | &disconnected_dprintf, _("\ | |
16050 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16051 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16052 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16053 | even if GDB disconnects or detaches from the target."), | |
16054 | NULL, | |
16055 | NULL, | |
16056 | &setlist, &showlist); | |
16057 | ||
16058 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16059 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16060 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16061 | ||
765dc015 | 16062 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16063 | |
76727919 TT |
16064 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16065 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16066 | } |